AU2007284343B2 - Breathable air safety system and method having an air storage sub-system - Google Patents

Breathable air safety system and method having an air storage sub-system Download PDF

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AU2007284343B2
AU2007284343B2 AU2007284343A AU2007284343A AU2007284343B2 AU 2007284343 B2 AU2007284343 B2 AU 2007284343B2 AU 2007284343 A AU2007284343 A AU 2007284343A AU 2007284343 A AU2007284343 A AU 2007284343A AU 2007284343 B2 AU2007284343 B2 AU 2007284343B2
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air
pressure
fill
breathable
supply unit
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AU2007284343A1 (en
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Anthony J. Turiello
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Rescue Air Systems Inc
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Rescue Air Systems Inc
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Priority claimed from US11/505,538 external-priority patent/US7673629B2/en
Priority claimed from US11/505,525 external-priority patent/US7677247B2/en
Priority claimed from US11/505,599 external-priority patent/US7694678B2/en
Priority claimed from US11/505,708 external-priority patent/US7621269B2/en
Priority claimed from US11/505,597 external-priority patent/US7527056B2/en
Application filed by Rescue Air Systems Inc filed Critical Rescue Air Systems Inc
Publication of AU2007284343A1 publication Critical patent/AU2007284343A1/en
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    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B13/00—Special devices for ventilating gasproof shelters
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B15/00—Installations affording protection against poisonous or injurious substances, e.g. with separate breathing apparatus
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B7/00—Respiratory apparatus
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/89—Arrangement or mounting of control or safety devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/044—Systems in which all treatment is given in the central station, i.e. all-air systems

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  • Health & Medical Sciences (AREA)
  • Emergency Management (AREA)
  • Business, Economics & Management (AREA)
  • General Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Pulmonology (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • Toxicology (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Buildings Adapted To Withstand Abnormal External Influences (AREA)
  • Ventilation (AREA)
  • Alarm Systems (AREA)
  • Emergency Lowering Means (AREA)

Abstract

A breathable air safety system and method having an air storage sub-system is disclosed. In one embodiment, a safety system of a structure includes a supply unit of a building structure to facilitate delivery of breathable air from a source of compressed air to an air distribution system of the building structure, a distribution structure that is compatible with use with compressed air that facilitates dissemination of the breathable air of the source of compressed air to multiple locations of the building structure, and an air storage sub-system to provide an additional supply of air to the building structure in addition to the source of compressed air.

Description

I BREATHABLE AIR SAFETY SYSTEM AND METHOD TECHNICAL FIELD 5 [0001] This disclosure relates generally to the technical fields of safety systems and, in one example embodiment, to a breathable air safety system and method having an air storage sub-system. BACKGROUND OF THE INVENTION 10 [0002] A structure may include a horizontal building structure such as a shopping mall, a warehouse, storage and manufacturing facilities, large box stores such as IKEA, Home Depot, a vertical structure such as a high rise building, a mid rise building, and a low rise building, a mine, a subway, a tunnel, and/or a wine cave. is [0003] The tunnel, for example, may be substantially horizontal and have a ratio of the length of the passage to the width of at least two to one. [0004] In addition, the tunnel may be completely enclosed on all sides, and the openings may be saved for the length of the covered area causing limited accessibility to the tunnel. 20 [0005] Providing and maintaining adequate safety in the structure may be of importance. For example, serious or fatal accidents occurring in underground mines in United States over the years may have resulted from an inability to control roofs of WO 2008/021538 PCT/US2007/018342 the underground mines. A fatal accident can occur, for example, from falling of even one large rock from the roof of the mine. [00061 In a case of an emergency situation of the structure, emergency personnel (e.g., a fire fighter, a SWAT team, a law enforcer, and/or a medical worker, etc.) may be deployed onsite of the structure to alleviate the emergency situation through mitigating a source of hazard as well as rescuing stranded civilians from the structure The emergency situation may include events such as a fire, a chemical attack, a terror attack, a subway accident, a mine collapse, and/or a biological agent attack. [0007] In such situations, breathable air inside the structure may be hazardously affected (e.g., depleted, absorbed, and/or contaminated). In addition, flow of fresh air into the structure may be significantly hindered due to the structure having enclosed regions, lack of windows, and/or high concentration of contaminants, etc. As a result, inhaling air in the structure may be extremely detrimental and may further result in death (e.g., within minutes). Furthermore, emergency work may often need to be performed from within the structure. [0008] The emergency personnel's ability to alleviate the emergency in an efficient manner may be significantly limited by the lack of breathable air and/or abundance of contaminated air. A survival rate of stranded civilians in the structure may substantially decrease due to a propagation of contaminated air through out the structure, placing a large number of innocent lives at significant risk. [00091 As such, the emergency personnel may utilize a portable breathable air apparatus (e.g., self-contained breathable air apparatus) as a source of breathable air during an emergency incident and/or a rescue mission. However, the portable breathable air apparatus may be heavy (e.g., 20-30 pounds) and/or may provide breathable air for a short while (e.g., approximately 15-30 minutes). In the emergency situation, the emergency personnel may need to walk, descend and/or climb to a particular location within the structure to perform rescuing work due to inoperable transport systems (e.g., obstructed walkway, elevators, moving sidewalks, and/or escalators-, etc.) [00101 As such, by the time the emergency personnel reach the particular location, his/her portable breathable air apparatus may be already depleted and may require replenishment (e.g., via a shuttle method or returning back to a previous location for a new portable breathable air apparatus). As a result, precious lives may be lost due to 2 WO 2008/021538 PCT/US2007/018342 precious time being lost. An extra supply of portable breathable air apparatuses may be stored throughout the structure so that emergency personnel can replace their portable breathable air apparatuses within the structure. However, supplying structures with spare portable breathable air apparatuses may be expensive and take up space in the structure, thereby causing severe handicap to the ability of emergency personnel to perform rescue tasks. [00111 Furthermore, management, supervisors, personnel, etc., may not regularly inspect the spare portable breathable air apparatuses. With time, the spare portable breathable air apparatuses may experience pressure loss placing the emergency personnel at significant risk when the spare breathable air apparatus is utilized in the emergency situation. The spare portable breathable air apparatuses may also be tampered with, during storage. Contaminants may be introduced into the spare portable breathable air apparatuses that may be detrimental to the emergency personnel. 3 IP Australia 4 -3 MAR 2014 Object of the Invention CEN_ [001t1a] It is the object of the present invention to substantially overcome or ameliorate one or more of the above disadvantages. Summary of the Invention [0012] The present invention provides a safety system of a building structure, comprising: a supply unit of a building structure to facilitate delivery of breathable air from a source of compressed air to an air distribution system of the building structure; a valve to prevent leakage of the breathable air from the air distribution system potentially leading to loss of system pressure; a fill station interior to the building structure to provide the breathable air to a breathable air apparatus at multiple locations of the building structure; a secure chamber of the fill station as a safety shield that confines a possible rupture of an over-pressurized breathable air apparatus within the secure chamber; a distribution structure that is compatible with use with compressed air that facilitates dissemination of the breathable air of the source of compressed air to multiple locations of the building structure; and an air storage sub-system to provide an additional supply of air to the building structure in addition to the source of compressed air, and wherein a driving air source enables the breathable air to be optimally supplied to the building structure through allowing the breathable air to be isolated from driving a pressure booster. [0013] The safety system may further include a plurality of air storage tanks of the air storage sub-system that are coupled to each other through tubes having a looped configuration to increase robustness of the tubes through preventing breakage due to stress. The driving air source of the air storage sub-system can be used to pneumatically drive a piston of a pressure booster to maintain a higher pressure of the air distribution system such that a breathable air apparatus is reliably filled. The driving air 4a source may enable the breathable air to be optimally supplied to the building structure through allowing the breathable air to be isolated from driving the pressure booster. [0014] The safety system may include an air monitoring system to automatically track and record any of impurities and contaminants in the breathable air of the air distribution system. The air monitoring system may include an automatic shutdown feature to suspend air dissemination to the building structure in a case that any of AH26(7585087_1):MLW WO 2008/021538 PCT/US2007/018342 impurity levels and contaminant levels exceed a safety threshold. The safety system may also include a pressure monitoring system to continuously track and record the system pressure of the air distribution system. The safety system may further include a pressure switch that is electrically coupled to an alarm system such that the alarm system is set off when the system pressure of the air distribution system is outside a safety range. The pressure switch may electrically transmit a warning signal to an emergency supervising station when the system pressure of the air distribution system is outside the safety range. [00151 The safety system may include at least one indicator unit of the air storage sub-system to provide status information of the air distribution system including storage pressure, booster pressure, pressure of the compressed air source, and/or the system pressure. The safety system may further include a supply unit enclosure encompassing the supply unit having a weather resistant feature, ultraviolet and/or infrared solar radiation resistant feature to prevent corrosion and/or physical damage. [00161 The safety system may also include a locking mechanism of the supply unit enclosure to secure the supply unit from intrusions that potentially compromise safety and reliability of the air distribution system. The safety system may further include a robust metallic material (e.g., may be at least substantially 18 gauge carbon steel) of the supply unit enclosure to minimize a physical damage due to various hazards to protect the supply unit from an intrusion and/or damage. In addition,, the safety system may include a valve of the supply unit to automatically suspend transfer of breathable air from the source of compressed air to the air distribution system when useful. [00171 The safety system may further include a safety relief valve of any of the supply unit and the fill station to release the breathable air when a system pressure of the air distribution system exceeds a threshold value beyond the design pressure to ensure reliability of the air distribution system through maintaining the system pressure such that it is within a pressure rating of each component of the air distribution system. [00181 The safety system may also include a CGA connector and RIC/UAC connector of the supply unit to facilitate a connection with the source of compressed air through ensuring compatibility with the source of compressed air. The safety system may further include an adjustable pressure regulator of the supply unit that is 5 WO 2008/021538 PCT/US2007/018342 used to adjust a fill pressure of the source of compressed air to ensure that the fill pressure does not exceed the design pressure of the air distribution system. 100191 In addition, the safety system may include at least one pressure gauge of the supply unit enclosure to indicate any of the system pressure of the air distribution system and the fill pressure of the source of compressed air and a visible marking of the supply unit enclosure and the fill station enclosure to provide luminescence in a reduced light environment. The safety system may also include another valve of the fill station to prevent leakage of air from the air distribution system potentially leading to a pressure loss of the air distribution system through ensuring that the system pressure is maintained within a threshold range of the design pressure to reliably fill the breathable air apparatus. The safety system may include an isolation valve of the fill station to isolate the fill station from a remaining portion of the air distribution system. The isolation valve may be automatically actuated based on an air pressure sensor of the air distribution system. [0020] Further, the safety system may include at least one pressure regulator of each of the fill station to adjust a fill pressure to fill the breathable air apparatus and to ensure that the fill pressure does not exceed the pressure rating of the breathable air apparatus potentially resulting in a rupture of the breathable air apparatus. The safety system may also include at least one pressure gauge of the fill station to indicate any of a fill pressure of the fill station and a system pressure of the air distribution system. In addition, the safety system may include a fire rated material and/or a fire rated assembly to enclose the distribution structure such that the distribution structure has the ability to withstand elevated temperatures for a prescribed period of time. [0021] The safety system may include a sleeve that is at least three times an outer diameter of each of a plurality of pipes of the distribution structure exterior to the fire rated material to further protect the fire rated material from any damage. Both ends of the sleeve may be fitted with the fire rated material that is approved by an authority agency. Further, the safety system may include a robust solid casing of the distribution structure to prevent physical damage to the distribution structure potentially compromising the safety and integrity of the air distribution system. [00221 In addition, the safety system may include another sleeve at least three times an outer diameter of a pipe of the distribution structure exterior to the robust solid casing to further protect the robust solid casing from any damage. Both ends of 6 WO 2008/021538 PCT/US2007/018342 another sleeve may be fitted with the fire rated material that is approved by the authority agency. The safety system may also include a plurality of support structures of each pipe of the distribution structure at intervals no larger than five feet to provide adequate structural support for each pipe. The distribution structure may include any of a stainless steel and a thermoplastic material that is compatible for use with compressed air. [00231 The safety system may further include an air monitoring system to automatically track and record any of impurities and/or contaminants in the breathable air of the air distribution system. The air monitoring system may include an automatic shut down feature to suspend air distribution to the fill station in a case that any of an impurity level and contaminant concentration exceeds a safety threshold. [00241 The safety system may also include a pressure monitoring system to automatically track and record the system pressure of the air distribution system. In addition, the safety system may include a pressure switch that is electrically coupled to a fire alarm system of the building structure such that the fire alarm system is set off when the system pressure of the air distribution system is outside a safety range. The pressure switch may electrically transmit a warning signal to an emergency supervising station when the system pressure of the air distribution system is outside the safety range. [00251 The fill station may have a physical capacity to enclose at least one breathable air apparatus and may include a RICfUAC connector that expedites a filling process of the breathable air apparatus. The safety system may further include a tamper switch of the locking mechanism of the supply unit enclosure such that an alarm is automatically triggered and a signal is electrically coupled to any of relevant administrative personnel of the building structure and the emergency supervising station when an intrusion of the supply unit occurs. The secure chamber may be certified to be rupture containable according to approved standards. The safety system may also include a selector valve that is accessible by emergency personnel to selectively utilize the source of compressed air to deliver the breathable air to the air fill station. [00261 The air storage sub-system may be housed in a fire rated enclosure that is certified to be rupture containable to withstand elevated temperatures for a prescribed amount of time. The safety system may further include a securing mechanism of the 7 WO 2008/021538 PCT/US2007/018342 secure chamber of the fill station having a locking function is automatically actuated via a coupling mechanism with a flow switch that indicates a status of air flow to the breathable air apparatus that is fillable in the fill station. [0027] In another aspect, a method of safety of a building structure includes ensuring that a prescribed pressure of an emergency support system maintains within a threshold range of the prescribed pressure by including a valve of the emergency support system to prevent leakage of breathable air from the emergency support system, safeguarding a filling process of a breathable air apparatus by enclosing the breathable air apparatus in a secure chamber of a fill site of the emergency support system of the building structure to provide a safe placement to supply the breathable air to the breathable air apparatus, and providing a spare storage of breathable air through an air storage tank of an air storage sub-system to store the breathable air that is replenishable with a source of compressed air. [00281 In addition, the method may include preventing corrosion and physical damage due to weather by incorporating a supply unit enclosure that is weather resistant. The method may further include preventing intrusion of the supply unit potentially compromising the safety and reliability of the breathing emergency support system by incorporating a locking mechanism of the supply unit enclosure. The method may also include minimizing physical damage of various external hazards to protect the supply unit and the fill site from any of an intrusion and damage through utilizing a robust metallic material to the supply unit enclosure. [00291 The method may include preventing leakage of air from the emergency support system leading to a potential pressure loss of the emergency support system through utilizing a valve of any of the supply unit and the fill site. The method may further include discontinuing transfer of the breathable air from the source of compressed air to the emergency support system through utilizing a valve to the emergency support system. In addition, the method may include automatically releasing the breathable air from the emergency support system when the system pressure of the emergency support system exceeds the prescribed pressure through triggering a safety relief valve of the supply unit and/or the fill site. The method may also include ensuring compatibility of the emergency support system and the source of compressed air of an authority agency through a CGA connector and/or a RIC/UAC connector of the supply unit. 8 WO 2008/021538 PCT/US2007/018342 [0030] In addition, the method may include adjusting a fill pressure to ensure that the fill pressure of the source of compressed air does not exceed the prescribed pressure of the emergency support system through a pressure regulator of the supply unit. The method may further include monitoring the system pressure of the emergency support system and/or the fill pressure of the source of compressed air through a pressure gauge of the supply unit enclosure. The method may also include improving accessibility of the supply unit enclosure through providing luminescence in reduced light environment by incorporating a visible marking. In addition, the method may include isolating a fill site from a remaining portion of the emergency support system using an isolation valve of the fill site such that the remaining portion of the emergency support system is utilizable in an emergency situation. [0031] The method may further include automatically actuating the isolation valve based on an air pressure sensor of the emergency support system. The method may also include adjusting the fill pressure of the fill site to ensure that the fill pressure does not exceed the pressure rating of the breathable air apparatus through a pressure regulator of the fill site. In addition, the method may include monitoring any one of the fill pressure of the fill site and the system pressure of the emergency support system by incorporating the pressure gauge to the fill site. [00321 The method may further include enabling the distribution structure to withstand elevated temperatures for a period of time using a fire rated material to encase the distribution structure. The method may include preventing the fire rated material from any damage by incorporating a sleeve at least three times an outer diameter of each pipe of the distribution structure exterior to the fire rated material. [0033] The method may also include preventing physical damage to the distribution structure potentially compromising safety and integrity of the emergency support system by utilizing a robust solid casing of the distribution structure. In addition, the method may include protecting the robust solid casing from any damage using another sleeve at least three times an outer diameter of a pipe of the distribution structure exterior to the robust solid casing. [0034] The method may also include automatically tracking and recording any impurities and contaminants in the breathable air of the breathing emergency support system through an air monitoring system. The method may further include automatically suspending air dissemination to the fill sites in a case that any of an 9 WO 2008/021538 PCT/US2007/018342 impurity level and contaminant concentration exceeds a safety threshold. In addition, the method may include tracking and recording the system pressure of the emergency support system through a pressure monitoring system. [00351 The method may further include electrically coupling the pressure monitoring system and a fire alarm system of the building structure such that the fire alarm system is automatically triggered through a pressure switch when the system pressure of the emergency support system is outside a safety range. In addition, the method may include electrically transmitting a warning signal to an emergency supervising station when the system pressure of the emergency support system-is below a prescribed level through the pressure switch. [00361 The method may further include automatically triggering an alarm and electrically coupling a signal to any of relevant administrative personnel of the building structure and the emergency supervising station when an intrusion of the supply unit occurs through a tamper switch of the locking mechanism of the supply unit enclosure. The method may also include increasing pressure of the breathable air stored in the air storage tank through a pressure booster to increase a pressure of the breathable air compared to the pressure of the breathable air in a plurality of air storage tanks to ensure that the emergency support system constantly has a supply of breathable air that has enough pressure to fill the breathable air apparatus. [00371 In addition, the method may include conserving a supply of breathable air in the air storage tank through utilizing a driving air source to drive the pressure booster. The method may include designating the prescribed pressure of the emergency support system based on a municipality code that specifies a pressure rating of the breathable air apparatus that is used in an authority agency of a particular geographical location. [00381 In yet another aspect, a building structure includes a first set of walls extending vertically and horizontally enclosing an area of land such that the area of land is in an internal region of the building structure, a second set of walls that divide the internal region of the building structure in any of a horizontal and vertical direction into rooms displaced any of horizontally and vertically from one another, a supply unit adjacent to a particular wall of the first set of walls to facilitate delivery of breathable air from a source of compressed air to an emergency support system of the building structure, a fill station of the internal region of the building structure to 10 WO 2008/021538 PCT/US2007/018342 provide the breathable air to a breathable air apparatus at multiple locations of the building structure, a secure chamber of the fill station as a safety shield that confine a possible rupture of an over-pressurized breathable air apparatus within the secure chamber, a distribution structure that is compatible with use with compressed air that facilitates dissemination of the breathable air of the source of compressed air to the multiple locations of the building structure, and an air storage sub-system to provide an additional supply of air to the building structure in addition to the source of compressed air. [00391 The building structure may also include an air monitoring system to automatically track and record any of impurities and contaminants in the breathable air of the air distribution system. The building structure may further include an air pressure monitor that is electrically coupled to an alarm such that the alarm is set off when the system pressure of the air distribution system is outside a prescribed threshold range. In addition, the building structure may include a physical enclosure of the fill station exterior to the secure chamber of the fill station that provides additional protection to the fill station from an elevated temperature and/or physical impact. [0040] In a further aspect, a safety system of a tunnel structure includes a supply unit of a tunnel structure to facilitate delivery of breathable air from a source of compressed air to an air distribution system of the tunnel structure, a valve to prevent leakage of the breathable air from the air distribution system potentially leading to loss of system pressure, a fill site interior to the tunnel structure to provide the breathable air to a breathable air apparatus at multiple locations of the tunnel structure, and a distribution structure that is compatible with use with compressed air that facilitates dissemination of the breathable air of the source of compressed air to multiple locations of the tunnel structure. [00411 In yet a further aspect, a safety system of a building structure includes a supply unit of a building structure to facilitate delivery of breathable air from a source of compressed air to an air distribution system of the building structure, a valve to prevent leakage of the breathable air from the air distribution system potentially leading to loss of a system pressure, a fill station interior to the building structure to provide the breathable air to a breathable air apparatus at multiple locations of the building structure, a secure chamber of the fill station as a safety shield that confines a 11 WO 2008/021538 PCT/US2007/018342 possible rupture of an over-pressurized breathable air apparatus within the secure chamber, and a distribution structure that is compatible with use with compressed air that facilitates dissemination of the breathable air of the source of compressed air to multiple locations of the building structure. [0042] In another aspect, a method of safety of a building structure includes ensuring that a prescribed pressure of an emergency support system maintains within a threshold range of the prescribed pressure by including a valve of the emergency support system to prevent leakage of breathable air from the emergency support system, safeguarding a filling process of a breathable air apparatus by enclosing the breathable air apparatus in a secure chamber of a fill site of the emergency support system of the building structure to provide a safe placement to supply the breathable air to the breathable air apparatus, and maintaining the prescribed pressure of the emergency support system such that a system pressure is compatible with the breathable air apparatus through a distribution structure that is rated for use with compressed air that couples the supply unit and fill site to transfer breathable air of the source of compressed air to the fill site. [0043] In yet another aspect, a building structure includes a first set of walls extending vertically and horizontally enclosing an area of land such that the area of land is in an internal region of the building structure, a second set of walls that divide the internal region of the building structure in any of a horizontal and vertical direction into rooms displaced any of a horizontally and vertically from one another, a supply unit adjacent to a particular wall of the first set of walls to facilitate delivery of breathable air from a source of compressed air to an emergency support system of the building structure, a fill station of the internal region of the building structure to provide the breathable air to a breathable air apparatus at multiple locations of the building structure, a secure chamber of the fill station as a safety shield that confines a possible rupture of an over-pressurized breathable air apparatus within the secure chamber, and a distribution structure that is compatible with use with compressed air that facilitates dissemination of the breathable air of the source of compressed air to multiple locations of the building structure. [0044] In another aspect, a safety system of a building structure includes a supply unit of the building structure to facilitate delivery of breathable air from a source of compressed air to an air distribution system of the building structure, a valve to 12 WO 2008/021538 PCT/US2007/018342 prevent leakage of the breathable air from the air distribution system potentially leading to loss of a system pressure, a fill panel interior to the building structure having a RIC/JAC fitting pressure rated for a fill outlet of the fill panel to fill a breathable air apparatus to expedite a breathable air extraction process from the air distribution system and to provide the breathable air to the breathable air apparatus at multiple locations of the building structure, and a distribution structure that is compatible with use with compressed air that facilitates dissemination of the breathable air of the source of compressed air to multiple locations of the building structure. [00451 In a further aspect, a method of safety of a structure includes ensuring that a prescribed pressure of an emergency support system maintains within a threshold range of the prescribed pressure by including a valve of the emergency support system to prevent leakage of breathable air from the emergency support system and expediting an air extraction process from the emergency support system by including a RIC/UAC fitting to a fill panel to fill a breathable air apparatus. [00461 In yet another aspect, a building structure includes a first set of walls extending vertically and horizontally enclosing an area of land such that the area of land is in an internal region of the building structure, a second set of walls that divide the internal region of the building structure in any of a horizontal and vertical direction into areas displaced any of a horizontally and vertically from one another, a supply unit adjacent to a particular wall of the first set of walls to facilitate delivery of breathable air from a source of compressed air to an emergency support system of the building structure, a fill panel of the internal region of the building structure having a RIC/UAC fitting to expedite a breathable air extraction process from the emergency support system and to provide the breathable air to the breathable air apparatus at multiple locations of the building structure, and a distribution structure that is compatible with use with compressed air that facilitates dissemination of the breathable air of the source of compressed air to multiple locations of the building structure. [00471 In another aspect, a safety system of a mine structure includes a supply unit of -the mine structure to facilitate delivery of breathable air from a source of compressed air to an air distribution system of the mine structure, a valve to prevent leakage of the breathable air from the air distribution system potentially leading to loss of system 13 WO 2008/021538 PCT/US2007/018342 pressure, a fill site interior to the mine structure to provide the breathable air to a breathable air apparatus at multiple locations of the mine structure, and a distribution structure that is compatible with use with compressed air that facilitates dissemination of the breathable air of the source of compressed air to multiple locations of the mine structure. [00481 In yet another aspect, a method of safety of a mine structure includes ensuring that a prescribed pressure of an emergency support system maintains within a threshold range of the prescribed pressure by including a valve of the emergency support system to prevent leakage of breathable air from the emergency support system, safeguarding a filling process of a breathable air apparatus by enclosing the breathable air apparatus in a secure chamber of a fill site of the emergency support system of the mine structure to provide a safe placement to supply the breathable air to the breathable air apparatus, and providing a spare storage of breathable air through an air storage tank of a storage sub-system to store breathable air that is replenishable with a source of compressed air. [00491 In a further aspect, a safety system of a structure includes a supply unit of a building structure to facilitate delivery of breathable air from a source of compressed air to an air distribution system of the building structure, a distribution structure that is compatible with use with compressed air that facilitates dissemination of the breathable air of the source of compressed air to multiple locations of the building structure, and an air storage sub-system to provide an additional supply of air to the building structure in addition to the source of compressed air. [0050] Methods, systems, and apparatuses disclosed herein may be implemented in any means for achieving various aspects, and may be executed in a form of a machine-readable medium embodying a set of instructions that, when executed by a machine, cause the machine to perform any of an operations disclosed herein. Other features will be apparent from an accompanying drawing and from the detailed description that follows. 14 WO 2008/021538 PCT/US2007/018342 BRIEF DESCRIPTION OF THE DRAWINGS [00511 Example embodiments are illustrated by way of example and not limitation in the figures of the accompanying drawings, in which like references indicate similar elements and in which: {00521 Figure 1 is a block diagram of an air distribution system in a structure, according to one embodiment. (00531 Figure 2 is block diagram of an air distribution system in a structure having fill sites located vertically from one another, according to one embodiment. [0054] Figure 3 is a block diagram of an air distribution system in a structure having fill sites located horizontally from one another, according to one embodiment. [0055] Figure 4A is a front view of the supply unit of the air distribution system, according to one embodiment. [0056] Figure 4B is a rear view of the supply unit of the air distribution system, according to one embodiment. [0057] Figure 5 is an illustration of a supply unit enclosure encompassing the supply unit, according to one embodiment. [0058] Figure 6A is an illustration of a fill station interior to the structure, according to one embodiment. [0059] Figure 6B is an illustration of a fill panel interior to the structure, according to one embodiment. [0060] Figure 7A is a diagrammatic view of a pipe of the distribution structure embedded in a fire rated material, according to one embodiment. [00611 Figure 7B is a cross sectional view of the distribution structure embedded in the fire rated material, according to one embodiment. 100621 Figure 8 is a network view of an air monitoring system with a wireless module communicating with building administration and an emergency agency through a network, according to one embodiment. [00631 Figure 9 is a front view of a control panel of an air storage sub-system, according to one embodiment. [00641 Figure 10 is an illustration of the air storage sub-system, according to one embodiment. 10065] Figure 11 is a block diagram of an air distribution system having the air storage sub-system, according to one embodiment. 15 WO 2008/021538 PCT/US2007/018342 [0066] Figure 12 is a process flow of a safety of a building structure having an air storage sub-system, according to one embodiment. [0067] Figure 13 is a process flow that describes further the operations of Figure 12, according to one embodiment. [0068] Figure 14 is a process flow that describes further the operations of Figure 13, according to one embodiment. [00691 Figure 15 is a process flow that describes further the operations of Figure 14, according to one embodiment. [0070] Figure 16 is a process flow that describes further the operations of Figure 15, according to one embodiment. [0071] Figure 17 is a process flow of a safety of a building structure having a fill station, according to one embodiment. [0072] Figure 18 is a process flow of a safety of a building structure having a fill site, according to one embodiment. [00731 Figure 19 is a process flow of a safety of a mine structure, according to one embodiment. [0074] Other features of the present embodiments will be apparent from the accompanying drawings and from the detailed description that follows. 16 WO 2008/021538 PCT/US2007/018342 DETAILED DESCRIPTION [00751 A Breathable air safety system and method having an air storage sub-system is disclosed. In the following description, for the purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the various embodiments. It will be evident, however to one skilled in the art that the various embodiments may be practiced without these specific details. [00761 The terms "air distribution system" and "emergency support system" are used interchangeably throughout the document. [00771 In one embodiment, a safety system of a building structure includes a supply unit (e.g., the supply unit 100 of Figures 1-3) of a building structure to facilitate delivery of breathable air from a source of compressed air to an air distribution system (e.g., the air distribution system 150, 250, 350 of Figures 1-3) of the building structure, a valve (e.g., the valve of the series of valves 408 of Figure 4) to prevent a leakage of the breathable air from the air distribution system 150 potentially leading to loss of a system pressure, a fill station (e.g., the fill station 102A of Figure 6A) interior to the building structure to provide the breathable air to a breathable air apparatus at multiple locations of the building structure, a secure chamber (e.g., the holders 612 of Figure 6A) of the fill station 102A as a safety shield that confines a possible rupture of an over-pressurized breathable air apparatus within the secure chamber 612, a distribution structure (e.g., the distribution structure 104 of Figures 1 3) that is compatible with use with compressed air that facilitates dissemination of the breathable air of the source of compressed air to multiple locations of the building structure, and an air storage sub-system (e.g., the air storage sub-system 950 of Figure 10) to provide an additional supply of air to the building structure in addition to the source of compressed air. [00781 In another embodiment, a method of safety of a building structure includes ensuring that a prescribed pressure of an emergency support system (e.g., the air distribution system 150, 250, 350 of Figures 1-3) maintains within a threshold range of the prescribed pressure by including a valve of the emergency support system to prevent leakage of breathable air from the emergency support system 150, safeguarding a filling process of a breathable air apparatus by enclosing the breathable air apparatus in a secure chamber (e.g., the holders 612 of Figure 6A) of a fill site (e.g., the fill site 102 of Figures 1-3) of the emergency support system of the building 17 WO 2008/021538 PCT/US2007/018342 structure to provide a safe placement to supply the breathable air to the breathable air apparatus, and providing a spare storage of breathable air through an air storage tank of an air storage sub-system to store the breathable air that is replenishable with a source of compressed air. [0079] In yet another embodiment, a building structure (e.g., a horizontal building structure such as a shopping mall, a vertical building structure such as a high rise building, a mid rise building, and/or a low rise building, a mine, a subway, and/or a tunnel, etc.) includes a first set of walls extending vertically and horizontally enclosing an area of land such that the area of land is in an internal region of the building structure, a second set of walls that divide the internal region of the building structure in any of a horizontal and vertical direction into rooms displaced any of horizontally and vertically from one another, a supply unit (e.g., the supply unit 100 of Figures 1-3) adjacent to a particular wall of the first set of walls to facilitate delivery of breathable air from a source of compressed air to an emergency support system (e.g., the air distribution system 150, 250, 350 of Figures 1-3) of the building structure, a fill station (e.g., the fill station 102A of Figure 6A) of the internal region of the building structure to provide the breathable air to a breathable air apparatus at multiple locations of the building structure, a secure chamber (e.g., the holders 612 of Figure 6A) of the fill station 102A as a safety shield that confine a possible rupture of an over-pressurized breathable air apparatus within the secure chamber 612, a distribution structure (e.g., the distribution structure 104 of Figures 1-3) that is compatible with use with compressed air that facilitates dissemination of the breathable air of the source of compressed air to multiple locations of the building structure, and an air storage sub-system (e.g., the air storage sub-system 950 of Figure 10) to provide an additional supply of air to the building structure in addition to the source of compressed air. '[00801 In a further embodiment, asafety system of a tunnel structure includes a supply unit (e.g., the supply unit 100 of Figures 1-3) of a tunnel structure to facilitate delivery of breathable air from a source of compressed air to an air distribution system (e.g., the air distribution system 150, 250, 350 of Figures 1-3) of the tunnel structure, a valve (e.g., the check valve of a series of valves 408 of Figure 4) to prevent leakage of the breathable air from the air distribution system 150 potentially leading to loss of system pressure, a fill site (e.g., the fill site 102 of Figure 1) interior to the tunnel 18 WO 2008/021538 PCT/US2007/018342 structure to provide the breathable air to a breathable air apparatus at multiple locations of the tunnel structure, and a distribution structure (e.g., the distribution structure 104 of Figures 1-3) that is compatible with use with compressed air that facilitates dissemination of the breathable air of the source of compressed air to multiple locations of the tunnel structure. [0081] In yet a further embodiment, a safety system of a building structure includes a supply unit (e.g., the supply unit 100 of Figures 1-3) of a building structure to facilitate delivery of breathable air from a source of compressed air to an air distribution system (e.g., the air distribution system 150, 250, 350 of Figures 1-3) of the building structure ,a valve (e.g., the valve of a series of valves 408 of Figure 4) to prevent leakage of the breathable air from the air distribution system 150 potentially leading to loss of a system pressure, a fill station (e.g., the fill station 102A of Figure 6A) interior to the building structure to provide the breathable air to a breathable air apparatus at multiple locations of the building structure, a secure chamber (e.g., the holders 612 of Figure 6A) of the fill station 102A as a safety shield that confines a possible rupture of an over-pressurized breathable air apparatus within the secure chamber 612, and a distribution structure (e.g., the distribution structure 104 of Figures 1-3) that is compatible with use with compressed air that facilitates dissemination of the breathable air of the source of compressed air to multiple locations of the building structure. [00821 In a next embodiment, a method of safety of a building structure includes ensuring that a prescribed pressure of an emergency support system (e.g.,. the air distribution system 150, 250, 350 of Figures 1-3) maintains within a threshold range of the prescribed pressure by including a valve of the emergency support system to prevent leakage of breathable air from the emergency support system (e.g., the air distribution system 150, 250, 350 of Figures 1-3), safeguarding a filling process of a breathable air apparatus by enclosing the breathable air apparatus in a secure chamber .(e.g., the holders 612 of Figure 6A) of a fill site (e.g., the fill site 102 of Figures 1-3) of the emergency support system 150 of the building structure to provide a safe placement to supply the breathable air to the breathable air apparatus, and maintaining the prescribed pressure of the emergency support system 150 such that a system pressure is compatible with the breathable air apparatus through a distribution structure that is rated for use with compressed air that couples the supply unit and the 19 WO 2008/021538 PCT/US2007/018342 fill site 102 to transfer breathable air of the source of compressed air to the fill site 102. [0083] In another embodiment, a building structure (e.g., a horizontal building structure such as a shopping mall, a vertical building structure such as a high rise building, a mid rise building, and/or a low rise building, a mine, a subway, and/or a tunnel, etc.) includes a first set of walls extending vertically and horizontally enclosing an area of land such that the area of land is in the internal region of the building structure, a second set of walls that divide the internal region of the building structure in any of a horizontal and vertical direction into rooms displaced any of a horizontally and vertically from one another, a supply unit (e.g., the supply unit 100 of Figures 1-3) adjacent to a particular wall of the first set of walls to facilitate delivery of breathable air from a source of compressed -air to an emergency support system (e.g., the air distribution system 150, 250, 350 of Figures 1-3) of the building structure, a fill station (e.g., the fill station 102A of Figure 6A) of the internal region of the building structure to provide the breathable air to a breathable air apparatus at multiple locations of the building structure, a secure chamber (e.g., the holders 612 of Figure 6A) of the fill station 102A as a safety shield that confines a possible rupture of an over-pressurized breathable air apparatus within the secure chamber 612, and a distribution structure (e.g., the distribution structure 104 of Figures 1-3) that is compatible with use with compressed air that facilitates dissemination of the breathable air of the source of compressed air to multiple locations of the building structure. [0084] In yet another embodiment, a safety system of a building structure includes a supply unit (e.g., the supply unit 100 of Figures 1-3) of a building structure to facilitate delivery of breathable air from a source of compressed air to an air distribution system (e.g., the air distribution system 150, 250, 350 of Figures 1-3) of the building structure, a valve to prevent leakage of the breathable air from the air distribution system potentially leading to loss of system pressure, a fill panel (e.g., the fill panel 102B of Figure 6) interior to the building structure having a RIC/UAC fitting pressure rated for a fill outlet of the fill panel to fill a breathable air apparatus to expedite a breathable air extraction process from the air distribution system and to provide the breathable air to the breathable air apparatus at multiple locations of the building structure, and a distribution structure (e.g., the distribution structure 104 of 20 WO 2008/021538 PCT/US2007/018342 Figures 1-3) that is compatible with use with compressed air that facilitates dissemination of the breathable air of the source of compressed air to multiple locations of the building structure. [00851 In a further embodiment, a method of safety of a structure includes ensuring that a prescribed pressure of the emergency support system 150 maintains within a threshold range of the prescribed pressure by including a valve of the emergency support system to prevent leakage of breathable air from the emergency support system, and expediting an air extraction process from the emergency support system by including a RIC/UAC fitting to a fill panel to fill a breathable air apparatus. [00861 In yet a further embodiment, a building structure includes a first set of walls extending vertically and horizontally enclosing an area of land such that the area of land is in the internal region of the building structure, a second set of walls that divide the internal region of the building structure in any of a horizontal and vertical direction into areas displaced any of a horizontally and vertically from one another, a supply unit (e.g., the supply unit 100 of Figures 1-3) adjacent to a particular wall of the first set of walls to facilitate delivery of breathable air from a source of compressed air to an emergency support system (e.g., the air distribution system 150, 250, 350 of Figures 1-3) of the building structure, a fill panel of the internal region of the building structure having a RIC/UAC fitting to expedite a breathable air extraction process from the emergency support system and to provide the breathable air to the breathable air apparatus at multiple locations of the building structure, and a distribution structure (e.g., the distribution structure 104 of Figures 1-3) that is compatible with use with compressed air that facilitates dissemination of the breathable air of the source of compressed air to multiple locations of the building structure. [0087] In a subsequent embodiment, a safety system of a mine structure includes a supply unit (e.g., the supply unit 100 of Figures 1-3) of a mine structure to facilitate delivery of breathable air from a source of compressed air to an air distribution structure (e.g., the distribution structure 104 of Figures 1-3) of the mine structure, a valve (e.g., the check valve of a series of valves 408 of Figure 4) to prevent a leakage of the breathable air from the air distribution structure 150 potentially leading to loss of a system pressure, a fill site (e.g., the fill site 102 of Figures 1-3) interior to the mine structure to provide the breathable air to a breathable air apparatus at multiple 21 WO 2008/021538 PCT/US2007/018342 locations of the mine structure, and a distribution structure (e.g., the distribution structure 104 of Figures 1-3) that is compatible with use with compressed air that facilitates dissemination of the breathable air of the source of compressed air to multiple locations of the mine structure. [0088] In yet another embodiment, a method of safety of a mine structure includes ensuring that a prescribed pressure of the emergency support system 150 maintains within a threshold range of the prescribed pressure by including a valve of the emergency support system to prevent leakage of breathable air from the emergency support system 150, safeguarding a filling process of a breathable air apparatus by enclosing the breathable air apparatus in a secure chamber (e.g., the holders 612 of Figure 6A) of a fill site (e.g., the fill site. 102 of Figures 1-3) of the emergency support system 150 of the mine structure to provide a safe placement to supply the breathable air to the breathable air apparatus, and providing a spare storage of breathable air through an air storage tank (e.g., the air storage tanks 1008 of Figure 10) of a storage sub-system (e.g., the air storage sub-system 950 of Figure 10) to store breathable air that is replenishable with a source of compressed air. [0089] Figure 1 is a block diagram of an air distribution system 150 in a structure, according to one embodiment. The air distribution system 150 may include any number of supply units 100, any number of fill sites 102 that are coupled to the rest of the air distribution system 150 through a distribution structure 104. The air distribution system 150 may also include an air monitoring system 110 having a CO/Moisture sensor 106 and a low pressure sensor 108. [00901 The supply unit 100 may be placed at a number of locations exterior to the structure (e.g., a horizontal building structure such as a shopping mall, a vertical building structure such as a high rise building, a mid rise building, and/or a low rise building, a mine, a subway, and/or a tunnel structure, etc.) to allow ease of access by a source of compressed air and/or to expedite supplying the air distribution system 150 with breathable air. The supply units 100 may also be placed at locations that are substantially free of traffic to decrease potential obstruction present in an emergency situation (e.g., a building fire, a chemical attack, terror attack, subway accident, mine collapse, and/or a biological agent attack, etc.). [00911 The fill sites 102 may also be placed at a number of locations of the structure (e.g., a horizontal building structure such as a shopping mall, a vertical building 22 WO 2008/021538 PCT/US2007/018342 structure such as a high rise building, a mid rise building, and/or a low rise building, a mine, a subway, and/or a tunnel, etc.) to provide the breathable air to a breathable air apparatus at multiple locations (e.g., at multiple access points) of the structure. In one embodiment, the fill sites 102 may include wireless capabilities (e.g., a wireless module 114) for communication with remote entities (e.g., the supply unit 100, building administration, and/or an authority agency, etc.). [0092] The distribution structure 104 may have any number of fill sites 102 (e.g., the fill panel 102B and/or the fill station 102A) on each floor and/or different floors. Each fill site 102 may be sequentially coupled to one another and to the supply units 100 through the distribution structure 104. The distribution structure 104 may include any number of pipes to expand an air carrying capacity of the air distribution system 150 such that breathable air is replenished with a source of compressed air at a higher rate. . [00931 The air monitoring system 110 may contain multiple sensors such as the CO/Moisture sensor 106 and the pressure sensor. 108 to track and record quality of the breathable air (e.g., like impurity levels and contaminants concentration, etc.) in the air distribution system 150. Since emergency personnel (e.g., a fire fighter, a SWAT team, a law enforcer, and/or a medical worker, etc.) depend on the breathable air distributed via the air distribution system 150, it is essential that quality of the breathable air be constantly maintained. The air monitoring system 1 10 may also include other sensors that detect other hazardous substances (e.g., benzene, acetamide, acrylic acid, asbestos, mercury, phosphorous, propylene oxide, etc.) that contaminates the breathable air. [0094] In one embodiment, the distribution structure 104 that is compatible to use with compressed air may facilitate dissemination of the breathable air of the source of compressed air to multiple locations of the structure. A fire rated material (e.g., the fire rated material 702 of Figure 7A) may encase the distribution structure 104 such that the distribution structure 104 has the ability to withstand elevated temperatures for a prescribed period of time. The pipes of the distribution structure 104 may include a sleeve exterior to the fire rated material 702 to protect the fire rated material 702 from damage. Both ends of the sleeve may be fitted with a fire rated material 702 approved by an authority agency (e.g., certified according to the approved standards). In addition, the distribution structure 104 may include a robust solid casing to prevent 23 WO 2008/021538 PCT/US2007/018342 physical damage to the distribution structure 104 potentially compromising safety and reliability of the air distribution system 150. [0095] The distribution structure 104 may include support structures at specific intervals (e.g., less than five feet) to provide adequate structural support for each pipe of the distribution structure 104. The pipes and the fittings of the distribution structure 104 may be of stainless steel, and thermoplastic material, etc. compatible to use with compressed air. [0096] In another embodiment, the air distribution system 150 may include an air monitoring system 110 to automatically track and record impurity levels and/or contaminant concentration in the breathable air of the air distribution system 150. The air monitoring system 110 may have an automatic shut down feature to discontinue air distribution to the fill sites 102 in a case that any of an impurity level and contaminant concentration exceeds a safety threshold. For example, a pressure monitoring system (e.g., the pressure sensor 108 of Figure 1) may automatically track and record the system pressure of the air distribution system 150. Further, a pressure switch may be electrically coupled to an alarm system (e.g., the fire alarm system) such that the alarm system is set off when the system pressure of the air distribution system 150 exceeds the safety threshold. [0097] Figure 2 is block diagram of an air distribution system in a structure having fill sites located vertically from one another, according to one embodiment. In the air distribution system 250, the distribution structure 104 may individually couple each fill site 102 (e.g., the fill panel 102B and/or the fill station 102A) to the supply unit 100. Individual coupling may be advantageous in case one pipe of the distribution structure 104 becomes inoperable and/or unserviceable, the other pipes can still deliver air to the fill sites 102 (e.g., the fill panel 102B and/or the fill station 102A). [0098] In the air distribution system 250, the distribution structure 104 may sequentially couple each fill site 102 (e.g., the fill panel 102B and/or the fill station 102A) displaced predominantly vertically from the supply unit 100. Each air distribution system 250 may be used in conjunction with one another depending on a particular architectural style of the structure in a manner that provides efficient access to the breathable air of the air distribution system 250 reliably. [00991 Figure 3 is.a block diagram of an air distribution system 350 in a structure (e.g., mines, building, tunnel, etc.) having fill sites (e.g., the fill panel and/or fill 24 WO 2008/021538 PCT/US2007/018342 stations, etc.) located horizontally from one another, according to one embodiment. The air distribution system 350 may include any number of supply units 100, any number of fill sites 102 (e.g., a fill panel and/or a'fill station, etc.) that are coupled to the rest of the air distribution system 150 through a distribution structure 104. The air distribution system 150 may also include an air monitoring system 110 having a CO/Moisture sensor 106 and a pressure sensor 108. In the air distribution system 350, the distribution structure 104 may sequentially couple each fill site 102 (e.g., a fill panel and/or a fill station, etc.) displaced predominantly horizontally from the supply unit 100. Each air distribution system 350 may be used in conjunction with one another depending on the particular architectural style of the structure in a manner that provides efficient access to the breathable air of the air distribution system 350 reliably. [00100] Figure 4A is a front view of the supply unit 100 of the air distribution system 150, according to one embodiment. The supply.unit 100 may provide accessibility of a source of compressed air to supply breathable air to the air distribution system (e.g., the air distribution system 150, 250, and/or 350 of Figures 1-3). The supply unit 100 may include a fill pressure indicator 400, a fill control knob 402, a system pressure indicator 404, and a connector 406. [001011 The supply unit 100 may include an adjustable pressure regulator of the supply unit 100 that is used to adjust a fill pressure of the source of compressed air to ensure that the fill pressure does not exceed the safety threshold of the design pressure of the air distribution system 150. Further, the supply unit 100 may also include a pressure gauge (e.g., the fill pressure indicator 400, the system pressure indicator 404, etc.) of the supply unit enclosure 500 to indicate any of the system pressure (e.g., through the system pressure indicator 404 of Figure 4) of the air distribution system 150 and the fill pressure (e.g., through the fill pressure indicator 400 of Figure 4) of the source of compressed air. [00102] The fill pressure indicator 400 may indicate pressure level at which breathable air is being delivered by the source of compressed air to the air distribution system 150. The fill. control knob 402 may be used to control the fill pressure such that the fill pressure does not exceed a safety threshold of a design pressure of the air distribution system 150. The system pressure indicator 404 may indicate current pressure level of the breathable air in the air distribution system 150. 25 WO 2008/021538 PCT/US2007/018342 [001031 The connector 406 may be a CGA connector, a RIC/UAC connector (e.g., the RIC/UAC connector 620 of Figure 6B) etc. which is compatible with an air outlet of the source of compressed air of various emergency agencies (e.g., fire station, law enforcement agency, medical provider, and/or SWAT team, etc.). The connector 406 (e.g., CGA connector, RIC/UAC connector 620, etc.) of the supply unit 100 may facilitate a connection with the source of compressed air through ensuring compatibility of the supply unit 100 with the source of compressed air. In one embodiment, the supply unit 100 of a building structure may facilitate delivery of breathable air from a source of compressed air to the air distribution system 150 of the building structure. [00104] Figure 4B is a rear view of the supply unit 100 of the air distribution system 150, according to one embodiment. The supply unit 100 also may include a series of valves 408 (e.g., a valve, an isolation valve, and/or a safety relief valve, etc.) to ensure that system pressure is maintained within a safety threshold of the design pressure of the air distribution system 150. [001051 The supply unit 100 of a structure (e.g., building structure, tunnel structure, mine structure, etc.) may facilitate delivery of breathable air from a source of compressed air to the air distribution system 150 of the structure. The supply unit 100 may include the series of valves 408 (e.g., the valve, and/or the safety relief valve, etc.) to prevent a leakage of the breathable air from the air distribution system 150 potentially leading to loss of system pressure. For example, the supply unit 100 may include a valve of the series of valves 408 to automatically discontinue transfer of breathable air from the source of compressed air to the air distribution system 150. The safety relief valve of the supply unit 100 and/or the fill site 102 may release breathable air when a system pressure of the air distribution system 150 exceeds a threshold value of the design pressure to ensure reliability of the air distribution system 150 through maintaining the system pressure such that the system pressure is within a pressure rating of each component of the air distribution system 150. [00106] Figure 5 is an illustration of a supply unit enclosure 500 encompassing the supply unit 100, according to one embodiment. The supply unit enclosure 500 may include a locking mechanism 502 to secure the supply unit 100 from unauthorized access. Further, the supply unit enclosure 500 may also contain a fire rated material 26 WO 2008/021538 PCT/US2007/018342 702 such that the supply unit 100 withstands elevated temperatures for a prescribed period of time. [00107] The supply unit enclosure 500 encompassing the supply unit 100 may have any of a weather resistant feature, ultraviolet and/or infrared solar radiation resistant feature to prevent corrosion and/or physical damage. The locking mechanism 502 may secure the supply unit 100 from intrusions that potentially compromise safety and reliability of the air distribution system 150. 100108] In addition, the supply unit enclosure 500 may include a robust metallic material to protect the supply unit 100 from any of an intrusion and damage due to various hazards. For example, the robust metallic material may be substantially 18 gauge carbon steel. The supply unit enclosure 500 may be provided with a visible marking to provide luminescence in a reduced light environment. The locking mechanism 502 may also include a tamper switch which automatically triggers an alarm and electrically communicates a signal to any of administrative personnel of the structure and an emergency supervising station when an intrusion of any of the supply unit 100 and the secure chamber 612 occurs. [00109] Figure 6A is an illustration of the fill station 102A interior to the structure, according to one embodiment. The fill station 102A may be a type of the fill site 102 of Figure 1. The fill station 102A may include a system pressure indicator 600, a fill pressure regulator 602, a fill pressure indicator 604, another fill pressure indicator 606, and fill control knob 608. The fill station 102A may also include a RIC/UAC connector 610 and multiple breathable air apparatus holders 612 used to supply air from the air distribution system 150. The fill station 102A may be a rupture containment chamber such that over-pressurized compressed air cylinders are shielded and contained to prevent injuries. [001101 The system pressure indicator 600 may indicate current pressure level of breathable air in the air distribution system 150. The fill pressure regulator 602-may enable adjusting of a fill pressure of a source of compressed air to ensure that the fill pressure does not exceed design pressure of the air distribution system 150. The fill pressure indicator 604 and another fill pressure indicator 606 may indicate pressure level at which breathable air is being delivered by the source of compressed air to the air distribution system 150. The fill control knob 608 may be used to control the fill 27 WO 2008/021538 PCT/US2007/018342 pressure such that the fill pressure does not exceed a safety threshold for which the air distribution system 150 is designed for. [001111 The RICIUAC connector 610 may facilitate direct coupling to an emergency equipment to supply breathable air through a hose (e.g., connecting the RIC/UAC connector 610 and the emergency equipment). In essence, precious time may be saved because emergency personnel may not need to spend time to remove the emergency equipment from their rescue attire before they can be supplied with breathable air. Further, the RIC/UAC connector 610 may also directly couple to a face-piece of a respirator to supply breathable air. [00112] The multiple -breathable air apparatus holders 612 can hold multiple compressed air cylinders to be filled simultaneously. In addition, the multiple breathable air apparatus holders 612 can be rotated in order that additional compressed air cylinders may be loaded while the multiple compressed air cylinders are filled inside the fill station 102A. [00113] In one embodiment, the fill station 102A interior to a structure (e.g., building structure, tunnel structure, mine structure, etc.) may provide breathable air to a breathable air apparatus at multiple locations of the structure. A secure chamber (e.g., the holders 612 of Figure 6A) of the fill station 102A may be a safety shield that confines a possible rupture of an over-pressurized breathable air apparatus within the secure chamber 612. The fill station 102A may include a valve to prevent leakage of air (e.g., potentially leading to pressure loss of the air distribution system) from the air distribution system 150 through ensuring that the system pressure is maintained within a threshold range of design pressure to reliably fill the breathable air apparatus. An isolation valve may be included to isolate a breathable fill station from a remaining portion of the air distribution system 150. [001141 The isolation valve may be automatically actuated through an air pressure sensor (e.g., the low pressure sensor 108 of Figure 1) of the air distribution system 150. The fill station 102A may include a pressure regulator to adjust a fill pressure to fill the breathable air apparatus and/or to ensure that the fill pressure does not exceed the pressure rating of the breathable air apparatus potentially resulting in a rupture of the breathable air apparatus. The fill station 102A may include a pressure gauge (e.g., the system pressure indicator 600, the fill pressure indicator 604, and another fill pressure indicator 606) to indicate any of a fill pressure (e.g., the fill pressure 28 WO 2008/021538 PCT/US2007/018342 indicator 604, 606) of the fill station 102A and a system pressure (e.g., the system pressure indicator 600) of the air distribution system 150. [00115] In one embodiment, the air fill station 102A may have a physical capacity to enclose the breathable air apparatus and include the RIC/UAC connector 610 to facilitate a filling of the breathable air apparatus. The fill station 102A may also include a securing mechanism of the secure chamber 612 having a locking function which is automatically actuated through a coupling mechanism (e.g., with a flow switch) that indicates a status of air flow to the breathable air apparatus fillable in the fill station 102A. [00116] Figure 6B is an illustration of a fill panel 102B interior to the structure, according to one embodiment. The fill panel 102B may include a fill pressure indicator 614 (e.g., pressure gauge), a fill control knob 616 (e.g., pressure regulator), a system pressure indicator 618, a number of RIC[UAC connectors 620 and fill hoses 622. The fill panel 102B may also include a fill panel enclosure 624 with a locking mechanism to secure the fill panel 102B from intrusions that potentially compromise safety and reliability of the air distribution system 150. The system pressure indicator 618 may indicate current pressure level of breathable air in the air distribution system 150. The fill control-knob 616 may be used to adjust fill pressure such that the fill pressure does not exceed a safety threshold for which the air distribution system 150 is designed for. [00117] The RIC/UAC fitting 620 may facilitate direct coupling to emergency equipment to supply breathable air through a hose (e.g., connecting the RIC/UAC fitting 620 and the emergency equipment). Further, the RIC/UAC fitting 620 connected with the fill hoses 622 may also directly couple to a face-piece of a respirator to supply breathable air to emergency personnel (e.g., a fire fighter, a SWAT team, a law enforcer, and/or a medical worker, etc.) and/or stranded survivors in need of breathing assistance. Each fill hose 622 may be designed for different pressure rating and may be couple-able to any of a self-contained breathable air apparatus and respiratory mask through the compatible RIC/UAC connector 620. The fill panel enclosure 624 may be provided with a visible marking to provide luminescence in a reduced light environment. [00118] In one embodiment, the fill panel 102B interior to a structure (e.g., tunnel structure, mine structure, building structure, etc.) may have a RIC[UAC fitting 620 to 29 WO 2008/021538 PCT/US2007/018342 fill a breathable air apparatus to expedite a breathable air extraction process from the air distribution system 50 and/or to provide the breathable air to the breathable air apparatus at multiple locations of the structure. The fill panel 102B may include a safety relief valve set to have an open pressure (e.g., of at most approximately 10% more than a design pressure) of the air distribution system 150 to ensure reliability of the air distribution system 150 through maintaining the system pressure such that the system pressure is within a threshold range of a pressure rating of each component of the air distribution system 150. For example, the fill panel enclosure 624 may be made from 18 gauge carbon steel to minimize physical damage due to various naturally occurring and man-imposed hazards through protecting the fill panel from any of an intrusion and damage. The fill panel 102B may include an isolation valve to isolate a damaged fill panel 102B from a remaining operable portion of the air distribution system 150. [00119] Figure 7A is a diagrammatic view of a pipe of the distribution structure 104 in a fire rated material 702, according to one embodiment. The distribution structure 104 having pipes may be enclosed in the fire rated material 702. The fire rated material 702 may prevent the distribution structure 104 from damage (e.g., due to fire) such that the air distribution system 150 may be operational for a longer time period in an emergency situation (e.g., building fire, chemical attack, terror attack, subway accident, mine collapse, and/or a biological agent attack, etc.). (001201 Figure 7B is a cross sectional view 700 of the distribution structure 104 embedded in a fire rated material 702, according to one embodiment. Section 700 is a cross section of the distribution structure 104 embedded in the fire rated material 702. [001211 Figure 8 is a network view of an air monitoring system 806 with a wireless module 808 communicating with a building administration 802 and an authority agency 804 through a network 810, according to one embodiment. The air monitoring system 806 may include various sensors (e.g., the CO/Moisture sensor 106 of Figure 1, the pressure sensor 108 of Figure 1, and/or hazardous substance sensor, etc.) and/or status indicators regarding system readiness information (e.g., system pressure, in use, not in use, operational status, fill site usage status, fill site operational status, etc.). [001221 The air monitoring system 806 may communicate sensor readings to a building administration 802 (e.g., building management, security, and/or custodial 30 WO 2008/021538 PCT/US2007/018342 services, etc.) such that proper maintenance measures may be taken. The air monitoring system 806 may also send alert signals (e.g., as a reminder) for regular system inspection and maintenance to the building administration 802 through the network 810. The air monitoring system 806 may also communicate sensor readings to an authority agency 804 (e.g., a police station, a fire station, and/or a hospital, etc.). The wireless module 808 may be a device which communicates with other devices to enable the air monitoring system 806 monitor the air distribution system 150. [00123) Figure 9 is a front view of a control panel 900 of an air storage sub-system 950, according to one embodiment. The control panel 900 includes a fill pressure gauge 902, a storage pressure gauge 904, a booster pressure gauge 906, a system pressure gauge 908 and a storage bypass knob 910. The fill pressure gauge 902 may indicate pressure level at which breathable air is being delivered by the source of compressed air to the air distribution system (e.g., an air distribution system 150, 250, and/or 350 of Figures 1-3). The storage pressure gauge 904 may display pressure level of air storage tanks in the air storage sub-system 950. [00124] The booster pressure gauge may display pressure level of a booster tank (e.g., the booster tank 1006 of Figure 10). The system pressure gauge 908 may indicate current pressure level of the breathable air in the air distribution system 150 recorded by the pressure monitoring system. Air stored in the air storage sub-system 950 may be directly supplied to the air distribution system 150 through.utilizing the storage bypass knob 910. [001251 Figure 10 is an illustration of the air storage sub-system 950, according to one embodiment. Particularly, Figure 10 illustrates the control panel 900, tubes 1000, a driver air source 1002, a pressure booster 1004, a booster tank 1006, and air storage tanks 1008, according to one embodiment. The control panel 900 may provide status information associated with storage pressure, booster pressure, pressure of the compressed air source, and the system pressure of the air storage sub-system 950. The tubes 1000 having a looped configuration may couple each air storage tank 1008 to one another. The looped configuration of the tubes 1000 may increase in robustness of the tubes 1000 and thus may prevent damage of the tubes 1000 due to stress. In one example embodiment, the control panel 900 is mounted on the tubes 1000 coupled to the air storage tank 1008 and the booster tank 1006. 31 WO 2008/021538 PCT/US2007/018342 [00126] The driving air source 1002 may be used to pneumatically drive the pressure booster 1004 to maintain a higher pressure in the air distribution system 150 such that a breathable air apparatus is reliably filled. For example, a supply of breathable air in the air storage tanks 1008 may be conserved through utilizing a driving air source 1002 to drive the pressure booster 1004. [001271 In addition, the driving air source 1002 may enable the breathable air to be optimally supplied to the structure (e.g., mine, tunnel, building, etc.) through allowing the breathable air to be isolated from driving the pressure booster 1004. The booster tank 1006 may store air at a higher pressure than the air stored in the air storage tanks 1008 to ensure that the air distribution system is constantly supplied with breathable air sufficiently pressurized to fill a breathable air apparatus. [001281 In one embodiment, the air storage sub-system 950 may include air storage tanks 1008 to provide storage of air that is dispersible to multiple locations of the structure (e.g., building structure, tunnel structure, mine structure, etc.). The air storage tanks 1008 of the air storage sub-system 950 may be coupled to each other through tubes 1000 (e.g., having a looped configuration) to increase robustness of the tubes 1000 to prevent breakage due to stress. In addition, a booster tank 1006 of the air storage sub-system 950 may be coupled to the air storage tanks 1008 to store compressed air of a higher pressure than the compressed air that is stored in the air storage tank 1008. A driving air source 1002 of the air storage sub-system 950 may be coupled to the pressure booster 1004 to pneumatically drive a piston of the pressure booster 1004 to maintain a higher pressure of the air distribution system 150 such that a breathable air apparatus is reliably filled. [00129] Further, the driving air source 1002 may enable the breathable air to be optimally supplied to the structure (e.g., through allowing the breathable air to be isolated from driving the pressure booster 1004). The air storage sub-system 950 may also include an air monitoring system (e.g., that includes the CO/Moisture sensor 106 of Figures 1-3) to automatically track and record any of impurities levels and contaminants concentration in the breathable air of the air distribution system 150. The air monitoring system 110 may include an automatic shut down feature to discontinue air dissemination to the fill station 102A when any of impurity level and contaminant concentration exceeds a safety threshold. The air storage sub-system 950 may also include a pressure monitoring system (e.g., a pressure sensor 108 of Figure 32 WO 2008/021538 PCT/US2007/018342 1) to continuously track and record the system pressure of the air distribution system 150. [001301 A pressure switch may be electrically coupled to an alarm system such that the alarm system is set off when the system pressure of the air distribution system 150 exceeds a safety threshold. The pressure switch may electrically transmit a warning signal to an emergency supervising station when the system pressure of the air distribution system 150 is below the prescribed level. [00131] The air storage sub-system 950 may include an indicator unit to provide status information of the air distribution system 150 associated with storage pressure, booster pressure, pressure of the compressed air source, and/or the system pressure, etc. Further, the air storage sub-system 950 may also include a selector valve accessible by an emergency personnel to isolate the source of compressed air from the air storage sub-system 950 such that the breathable air of the source of compressed air is directly deliverable to the fill site 102 through the distribution structure 104. The air storage sub-system 950 may be housed in a fire rated enclosure that is certified to be rupture containable to withstand elevated temperatures for a prescribed period of time. In some embodiment, the air storage sub-system 950 may provide an additional supply of air to the building structure in addition to the source of compressed air. [00132] Figure 11 is a block diagram of the air distribution system 150 having the air storage sub-system 950, according to one embodiment. The air distribution system 150 may include a number of supply units 100, a number of fill sites 102 that are coupled to the rest of the air distribution system 150 through a distribution structure 104, according to one embodiment. The air distribution system 150 may also include an air monitoring system 110 having a CO/Moisture sensor 106 and a pressure sensor 108, and the air storage sub-system 950. Air storage tanks 1008 and/or a booster tank 1006 of the air storage subsystem 950 of Figure 10 may be supplied with breathable air through a source of compressed air that is coupled to the air distribution system 150 through the supply unit 100 and supplied independently of the supply unit 100. The air storage sub-system 950 may provide a spare source of breathable air to the air distribution system 150 in addition to an external source of compressed air. [001331 In one embodiment, the distribution structure 104 that is compatible with use with compressed air may facilitate dissemination of the breathable air of the source of compressed air to multiple locations of the building structure. 33 WO 2008/021538 PCT/US2007/018342 [001341 Figure 12 is a process flow of a safety of a building structure having an air storage sub-system (e.g., the air storage sub-system 950 of Figure 10), according to one embodiment. In operation 1202, it may be ensured that a prescribed pressure of an emergency support system (e.g., the air distribution system 150, 250, 350 of Figures 1-3) maintains within a threshold range of the prescribed pressure by including a'valve (e.g., the valve of a series of valves 408 of Figure 4B) of the emergency support system 150 to prevent leakage of breathable air from the emergency support system 150. In operation 1204, a filling process of a breathable air apparatus may be safeguarded by enclosing the breathable air apparatus in a secure chamber (e.g., the holders 612 of Figure 6A) of a fill site (e.g., the fill site 102 of Figures 1-3) of the emergency support system 150 of the building structure to provide a safe placement to supply the breathable air to the breathable air apparatus. [00135] In operation 1206, a spare storage of breathable air may be provided through an air storage tank (e.g., the air storage tanks 1008 of Figure 10) of a storage sub system (e.g., the air storage sub-system 950 of Figure 10) to store the breathable air that is replenishable with a source of compressed air. In operation 1208, corrosion and/or physical damage due to weather may be prevented by incorporating a supply unit enclosure (e.g., the supply unit enclosure 500 of Figure 5) that is weather resistant. In operation 1210, intrusion of the supply unit (e.g., a supply unit 100 of Figures 1-3) potentially compromising the safety and reliability of the breathing emergency support system 150 may be prevented by incorporating a locking mechanism (e.g., the locking mechanism 502 of Figure 5) of the supply unit enclosure 500. [001361 In operation 1212, physical daniage of various external hazards may be minimized to protect the supply unit 100 and the fill site 102 from any of an intrusion and damage through utilizing a robust metallic material to the supply unit enclosure 500. In operation 1214, leakage of air from the emergency support system 150 leading to a potential pressure loss of the emergency support system 150 may be prevented through utilizing a valve 408 of any of the supply unit 100 and the fill site 102. [00137] Figure 13 is a process flow that describes further the operations of Figure 12, according to one embodiment. In operation 1302, transfer of breathable air from the source of compressed air to the emergency support system 150 may be 34 WO 2008/021538 PCT/US2007/018342 discontinued through utilizing a valve 408 of the emergency support system 150. In operation 1304, breathable air from the emergency support system 150 may be released automatically when the system pressure of the emergency support system 150 exceeds the prescribed pressure through triggering a safety relief valve 408 of any of the supply unit 100 and the fill site 102. [00138] In operation 1306, compatibility of the emergency support system 150 and the source of compressed air of an authority agency may be ensured through any of a CGA connector (e.g., the connector 406 of Figure 4A) and a RIC/UAC connector (e.g., the RIC/UAC connector 610 and 620 of Figures 6A and 6B) of the supply unit 100. In operation 1308, a fill pressure may be adjusted to ensure that the fill pressure of the source of compressed air does not exceed the prescribed pressure of the emergency support system 150 through a pressure regulator of the supply unit 100. 1001391 In operation 1310, the system pressure of the emergency support system 150 and/or the fill pressure of the source of compressed air may be monitored through the pressure gauge of the supply unit enclosure 500. In operation 1312, accessibility of the supply unit enclosure 500 through providing luminescence in reduced light environments may be improved by incorporating a visible marking. In operation 1314, a fill site 102 may be isolated from a remaining portion of the emergency support system 150 using an isolation valve of the fill site 102 such that the remaining portion of the emergency support system 150 is utilizable in an emergency situation. [001401 Figure 14 is a process flow that describes further the operations of Figure 13, according to one embodiment. In operation 1402, the isolation valve (e.g., a valve of a series of valves 408 of Figure 4) may be automatically actuated based on an air pressure sensor of the emergency support system 150. In operation 1404, a fill pressure of the fill site 102 may be adjusted to ensure that the fill pressure does not exceed the pressure rating of the breathable air apparatus through a pressure regulator of the fill site 102. [00141] In operation 1406, the fill pressure of the fill site 102 and/or the system pressure of the emergency support system 150 may be monitored by incorporating a pressure gauge to the fill site 102. In operation 1408, the distribution structure 104 may be enabled to withstand elevated temperatures for a period of tiine using a fire rated material (e.g., the fire rated material 702 of Figure 7A) to encase the distribution structure 104. 35 WO 2008/021538 PCT/US2007/018342 [00142] In operation 1410, the fire rated material 702 may be prevented from damage by incorporating a sleeve at least three times an outer diameter of each pipe of the distribution structure 104 exterior to the fire rated material 702. In operation 1412, physical damage to the distribution structure 104 potentially compromising the safety and integrity of the emergency support system 150 may be prevented by utilizing a robust solid casing of the distribution structure 104. In operation 1414, the robust solid casing may be protected from any damage using another sleeve at least three times an outer diameter of a pipe of the distribution structure 104 exterior to the robust solid casing. [00143] Figure 15 is a process flow that describes further the operations of Figure 14, according to one embodiment. In operation 1502, impurities and/or contaminants in the breathable air of the breathing emergency support system 150 may be automatically tracked and recorded through an air monitoring system 110. In operation 1504, air dissemination to the fill sites 102 may be suspended automatically in a case that an impurity level and/or contaminant concentration exceeds a safety threshold. In operation 1506, the system pressure of the emergency support system 150 may be tracked and recorded through a pressure monitoring system. [001441 In operation 1508, the pressure monitoring system and the fire alarm system of the building structure may be electrically coupled such that the fire alarm system is automatically triggered through a pressure switch when the system pressure of the emergency support system 150 is outside a safety range. In operation 1510, a warning signal may be electrically transmitted to an emergency supervising station through the pressure switch when the system pressure of the emergency support system 150 is below the prescribed level. [00145] In operation 1512, an alarm may be automatically triggered and a signal may be coupled electrically to any of relevant administrative personnel of the building structure and the emergency supervising station when an intrusion of the supply unit 100 occurs through a tamper switch of the locking mechanism 502 of the supply unit enclosure 500. In operation 1514, pressure of the breathable air stored in the air tank may be increased through a pressure booster (e.g., the pressure booster 1004 of Figure 10) to increase a pressure of the breathable air compared to the pressure of the breathable air in air storage tanks (e.g., the air storage tanks 1008 of Figure 10) to 36 WO 2008/021538 PCT/US2007/018342 ensure that the emergency support system 150 constantly has a supply of breathable air that has enough pressure to fill the breathable air apparatus. [00146] Figure 16 is a process flow that describes further the operations of Figure 15, according to one embodiment. In operation 1602, a supply of breathable air in the air storage tank 1008 may be conserved through utilizing a driving air source (e.g., the driving air source 1002 of Figure 10) to drive the pressure booster 1004. [001471 Figure 17 is a process flow of a safety of a building structure having a fill station (e.g., the fill station 102A of Figure 6A), according to one embodiment. In operation 1702, it may be ensured that a prescribed pressure of an emergency support system (e.g., the air distribution system 150, 250, 350 of Figures 1-3) maintains within a threshold range of the prescribed pressure by including a valve (e.g., the valve of a series of valves 408 of Figure 4) of the emergency support system 150 to prevent leakage of breathable air from the emergency support system 150. In operation 1704, a filling process of a breathable air apparatus may be safeguarded by enclosing the breathable air apparatus in a secure chamber (e.g., the holders 612 of Figure 6A) of a fill site (e.g., the fill site 102 of Figures 1-3 of the emergency support system 150 of the building structure to provide a safe placement to supply the breathable air to the breathable air apparatus. [00148] In operation 1706, the prescribed pressure of the emergency support system (e.g., the air distribution system 150, 250, 350 of Figures 1-3) may be maintained such that a system pressure is compatible with the breathable air apparatus through a distribution structure (e.g., the distribution structure 104 of Figures 1-3) that is rated for use with compressed air that couples the supply unit 100 and the fill site 102 to transfer breathable air of the source of compressed air to the fill site 102. [001491 Figure 18 is a process flow of a safety of a building structure having a fill site (e.g., the fill site 102 of Figures 1-3) according to one embodiment. In operation 1802, it may be ensured that a prescribed pressure of an emergency support system (e.g., the air distribution system 150, 250, 350 of Figures 1-3) maintains within a threshold range of the prescribed pressure by including a valve (e.g., a valve of a series of valves 408 of Figure 4) of the emergency support system 150 to prevent leakage of breathable air from the emergency support system 150. In operation 1804, an air extraction process may be expedited from the emergency support system 150 37 WO 2008/021538 PCT/US2007/018342 by including a RIC/UAC fitting (e.g., the RIC/UAC fitting 620 of Figure 6B) to a fill panel 102B to fill a breathable air apparatus. [001501 Figure 19 is a process flow of a safety of a mine structure, according to one embodiment. In operation 1902, it may be ensured that a prescribed pressure of an emergency support system (e.g., the air distribution system 150, 250 and 350 of Figures 1-3) maintains within a threshold range of the prescribed pressure by including a valve (e.g., a check valve of a series of valves 408 of Figure 4) of the emergency support system 150 to prevent leakage of breathable air from the emergency support system 150. [001511 In operation 1904, a filling process of a breathable air apparatus may be safeguarded by enclosing the breathable air apparatus in a secure chamber (e.g., the holders 612 of Figure 6A) of a fill site 102 of the emergency support system 150 of the mine structure to provide a safe placement to supply the breathable air to the breathable air apparatus. In operation 1906, a spare storage of breathable air may be provided through an air storage tank 1008 of storage sub-system 950 to store the breathable air that is replenishable with a source of compressed air. [001521 Although the present embodiments have been described with reference to specific example embodiments, it will be evident that various modifications and changes may be made to these embodiments without departing from the broader spirit and scope of the various embodiments. For example, the various devices, modules, analyzers, generators, etc. described herein may be enabled and operated using hardware circuitry (e.g., CMOS based logic circuitry), firmware, software and/or any combination of hardware, firmware, and/or software (e.g., embodied in a machine readable medium). For example, the various electrical structure and methods may be embodied using transistors, logic gates, and electrical circuits (e.g., Application Specific Integrated Circuitry (ASIC)). 1001531 In addition, it will be appreciated that the various operations, processes, and methods disclosed herein may be embodied in a machine-readable medium and/or a machine accessible medium compatible with a data processing system (e.g:, a computer system), and may be performed in any order. Accordingly, the specification and drawings are to be regarded in an illustrative rather than a restrictive sense. [00154] The above disclosed invention may be made in different manufacturing environments and/or may be used in different industrial applications. For example, 38 WO 2008/021538 PCT/US2007/018342 the different components such as pressure gauges, air storage tanks, hose pipe, breathable air apparatus, CGA connector, RIC/UAC connector, respiratory mask, valves which constitute a breathable air safety system may be manufacturedin one or more manufacturing environments and/or may be assembled at a location to build the breathable air safety system having an air storage sub-system. As far the usage, the breathable air safety system may be used, for example, in multiple types of structures to facilitate efficient delivery of breathable air in case of an emergency situation. Such structures include, but are not limited to, buildings, mines, tunnels, etc. Whereas many alterations and modifications of the embodiments will no doubt become apparent to a person of ordinary skill in the art after having read the foregoing description, it is to be understood that the particular embodiments shown and described by way of illustration are in no way intended to be considered limiting. By way of example, although efficiently providing breathable air in case of emergency situation through the breathable air safety system is one particularly useful application, it is to be appreciated that the scope of the present teachings is not limited to providing breathable air to the emergency personnel, but rather can include storing the breathable air in an air storage sub-system, maintaining a prescribed pressure in the emergency support system, tracking impurities and contaminants in the breathable air, safeguarding a filling process before dispersing the breathable air at multiple locations of the structure. [001551 Those skilled in the art may understand that the breathable air safety system may be used in conjunction with one or more systems, that may depend upon particular architectural style of the structure in a manner that provides efficient access to the breathable air of the air distribution system reliably and is not limited to the vertical and horizontal position of the structure as mentioned in above embodiments. Thus, references to the details of the described embodiments are not intended to limit their scope. 39

Claims (15)

1. A safety system of a building structure, comprising: a supply unit of a building structure to facilitate delivery of breathable air from a source of compressed air to an air distribution system of the building structure; a valve to prevent leakage of the breathable air from the air distribution system potentially leading to loss of system pressure; a fill station interior to the building structure to provide the breathable air to a breathable air apparatus at multiple locations of the building structure; a secure chamber of the fill station as a safety shield that confines a possible rupture of an over-pressurized breathable air apparatus within the secure chamber; a distribution structure that is compatible with use with compressed air that facilitates dissemination of the breathable air of the source of compressed air to multiple locations of the building structure; and an air storage sub-system to provide an additional supply of air to the building structure in addition to the source of compressed air, and wherein a driving air source enables the breathable air to be optimally supplied to the building structure through allowing the breathable air to be isolated from driving a pressure booster.
2. The safety system of claim I further comprising an air storage tank of the air storage sub system to provide a storage of air that is dispersible to multiple locations of the building structure. 41
3. The safety system of claim 2 further comprising a plurality of air storage tanks of the air storage sub-system that are coupled to each other through tubes having a looped configuration to increase robustness, of the tubes through preventing breakage due to stress.
4. The safety system of claim 2 further comprising a booster tank of the air storage sub-system coupled to the air storage tank to store compressed air of a higher pressure than the compressed air that is stored in the air storage tank.
5. The safety system of claim 2 further comprising: a driving air source of the air storage sub-system to pneumatically drive a piston of the pressure booster to maintain a higher pressure of the air distribution system such that a breathable air apparatus is reliably filled; an air monitoring system to automatically track and record any of impurities and contaminants in the breathable air of the air distribution system, wherein the air monitoring system includes an automatic shut down feature to suspend air dissemination to the building structure in a case that any of impurity levels and contaminant levels exceed a safety threshold; a pressure monitoring system to continuously track and record the system pressure of the air distribution system; a pressure switch that is electrically coupled to an alarm system such that the alarm system is set off when the system pressure of the air distribution system is outside a safety range, wherein the pressure switch electrically transmits a warning signal to an emergency supervising station when the system pressure of the air distribution system is outside the 42 safety range, wherein the fill station has a physical capacity to enclose at least one breathable air apparatus and includes a RIC/UAC connector that expedites a filling process of the breathable air apparatus, wherein the air storage sub-system is housed in a fire rated enclosure that is certified to be rupture containable to withstand elevated temperatures for a prescribed amount of time; and a securing mechanism of the secure chamber of the fill station having a locking function is automatically actuated via a coupling mechanism with a flow switch that indicates a status of air flow to the breathable air apparatus that is fillable in the fill station,_wherein the building structure is comprised of a first set of walls extending vertically and horizontally enclosing an area of land such that the area of land is in the internal region of the building structure, a second set of walls that divide the internal region of the building structure in any of a horizontal and vertical direction into rooms displaced any of a horizontally and vertically from one another, a supply unit adjacent to a particular wall of the first set of walls to facilitate delivery of breathable air from a source of compressed air to an emergency support system of the building structure;
6. The safety system of claim 5, further comprising: at least one pressure regulator of each of the fill station to adjust a fill pressure to fill the breathable air apparatus and to ensure that the fill pressure does not exceed the pressure rating of the breathable air apparatus potentially resulting in a rupture of the breathable air apparatus; an isolation valve of the fill station to isolate a fill station from a remaining portion of the air distribution system; 43 at least one pressure gauge of the fill station to indicate any of a fill pressure of the fill station and a system pressure of the air distribution system; at least one of a fire rated material and a fire rated assembly to enclose the distribution structure such that the distribution structure has the ability to withstand elevated temperatures for a prescribed period of time; a sleeve that is at least three times an outer diameter of each of a plurality of pipes of the distribution structure exterior to the fire rated material to further protect the fire rated material from any damage, wherein both ends of the sleeve are fitted with a fire rated material that is approved by an authority agency; a robust solid casing of the distribution structure to prevent physical damage to the distribution structure potentially compromising the safety and integrity of the air distribution system; another sleeve at least three times an outer diameter of a pipe of the distribution structure exterior to the robust solid casing to further protect the robust solid casing from any damage, wherein both ends of the another sleeve is fitted with a fire rated material that is approved by the authority agency; and a plurality of support structures of each pipe of the distribution structure at intervals no larger than five feet to provide adequate structural support for each pipe, wherein the distribution structure comprises any of a stainless steel and a thermoplastic material that is compatible for use with compressed air, and wherein the driving air source enables the breathable air to be optimally supplied to the building structure through allowing the breathable air to be isolated from driving a pressure booster. 44
7. The safety system of claim 1, further comprising: an air monitoring system to automatically track and record any of impurities and contaminants in the breathable air of the air distribution system, wherein the air monitoring system includes an automatic shut down feature to suspend air distribution to the fill stations in a case that any of an impurity and contaminant concentration exceeds a safety threshold; a pressure switch that is electrically coupled to a fire alarm system of the building structure such that the fire alarm system is set off when the system pressure of the air distribution system is outside a safety range, wherein the pressure switch electrically transmits a warning signal to an emergency supervising station when the system pressure of the air distribution system is outside the safety range; at least one indicator unit of the air storage sub-system to provide status information of the air distribution system including storage pressure, booster pressure, pressure of the compressed air source, and the system pressure; a supply unit enclosure encompassing the supply unit having any of a weather resistant feature, ultraviolet and infrared solar radiation resistant feature to prevent corrosion and physical damage; and a locking mechanism of the supply unit enclosure to secure the supply unit from intrusions that potentially compromise safety and reliability of the air distribution system.
8.. The safety system of claim 7, further comprising: 45 a robust metallic material of the supply unit enclosure to minimize a physical damage due to various hazards to protect the supply unit from any of an intrusion and damage, wherein the robust metallic material is at least substantially 18 gauge carbon steel; at least one pressure gauge of the supply unit enclosure to indicate any of the system pressure of the air distribution system and the fill pressure of the source of compressed air; a tamper switch of the locking mechanism of the supply unit enclosure such that an alarm is automatically triggered and a signal is electrically coupled to any of a relevant administrative personnel of the building structure and the emergency supervising station when an intrusion of the supply unit occurs; a valve of the supply unit to automatically suspend transfer of breathable air from the source of compressed air to the air distribution system when useful; a selector valve that is accessible by an emergency personnel to selectively utilize the source of compressed air to deliver breathable air to the air fill station; any of a safety relief valve of the supply unit and the fill station to release breathable air when a system pressure of the air distribution system exceeds a threshold value beyond the design pressure to ensure reliability of the air distribution system through maintaining the system pressure such that it is within a pressure rating of each component of the air distribution system; any of a CGA connector and RIC/UAC connector of the supply unit to facilitate a connection with the source of compressed air through ensuring compatibility with the source of compressed air; 46 an adjustable pressure regulator of the supply unit that is used to adjust a fill pressure of the source of compressed air to ensure that the fill pressure does not exceed the design pressure of the air distribution system; a visible marking of the supply unit enclosure and the fill station enclosure to provide luminescence in a reduced light environment; and another valve of the fill station to prevent leakage of air from the air distribution system potentially leading to pressure loss of the air distribution system through ensuring that the system pressure is maintained within a threshold range of the design pressure to reliably fill the breathable air apparatus.
9. The safety system of claim 8, further comprising: an isolation valve is automatically actuated based on an air pressure sensor of the air distribution system; a pressure monitoring system to automatically track and record the system pressure of the air distribution system; and a secure chamber is certified to be rupture containable according to approved standards.
10. A method of safety of a building structure, comprising: ensuring that a prescribed pressure of an emergency support system maintains within a threshold range of the prescribed pressure by including a valve of the emergency support system to prevent leakage of breathable air from the emergency support system; and 47 safeguarding a filling process of a breathable air apparatus by enclosing the breathable air apparatus in a secure chamber of a fill site of the emergency support system of the building structure to provide a safe placement to supply the breathable air to the breathable air apparatus; providing a spare storage of breathable air through an air storage tank of a storage sub system to store breathable air that is replenishable with a source of compressed air; and conserving a supply of breathable air in the air storage tank through utilizing a driving air source to drive a pressure booster.
11. The method of claim 10 further comprising: preventing corrosion and physical damage due to weather by incorporating a supply unit enclosure that is weather resistant; preventing intrusion of the supply unit potentially compromising the safety and reliability of the breathing emergency support system by incorporating a locking mechanism of the supply unit enclosure; minimizing physical damage of various external hazards to protect the supply unit and the fill site from any of an intrusion and damage through utilizing a robust metallic material to the supply unit enclosure; preventing leakage of air from the emergency support system leading to a potential pressure loss of the emergency support system through utilizing a valve of any of the supply unit and the fill site; 48 discontinuing transfer of breathable air from the source of compressed air to the emergency support system through utilizing a valve of the emergency support system; automatically releasing breathable air from the emergency support system when the system pressure of the emergency support system exceeds the prescribed pressure through triggering a safety relief valve of any of the supply unit and the fill site; ensuring compatibility of the emergency support system and the source of compressed air of an authority agency through any of a CGA connector and a RIC/UAC connector of the supply unit; adjusting a fill pressure to ensure that the fill pressure of the source of compressed air does not exceed the prescribed pressure of the emergency support system through a pressure regulator of the supply unit; adjusting a fill pressure of the fill site to ensure that the fill pressure does not exceed the pressure rating of the breathable air apparatus through a pressure regulator of the fill site; enabling a distribution structure to withstand elevated temperatures for a period of time using a fire rated material to encase the distribution structure; preventing the fire rated material from damage by incorporating a sleeve at least three times an outer diameter of each pipe of the distribution structure exterior to the fire rated material; monitoring any of the system pressure of the emergency support system and the fill pressure of the source of compressed air through a pressure gauge of the supply unit enclosure; improving accessibility of the supply unit enclosure through providing luminescence in reduced light environments by incorporating a visible marking; and 49 isolating a fill site from a remaining portion of the emergency support system using an isolation valve of the fill site such that the remaining portion of the emergency support system is utilizable in an emergency situation.
12. The method of claim 11 further comprising: automatically tracking and recording any impurities and contaminants in the breathable air of the breathing emergency support system through an air monitoring system; automatically suspending air dissemination to the fill sites in a case that any of an impurity and contaminant concentration exceeds a safety threshold; tracking and recording the system pressure of the emergency support system through a pressure monitoring system; automatically triggering an alarm and electrically coupling a signal to any of a relevant administrative personnel of the building structure and the emergency supervising station when an intrusion of the supply unit occurs through a tamper switch of the locking mechanism of the supply unit enclosure; increasing pressure of the breathable air stored in the air storage tank of the storage sub system through the pressure booster to increase a pressure of the breathable air compared to the pressure of the breathable air in a plurality of air storage tanks to ensure that the emergency support system constantly has a supply of breathable air that has enough pressure to fill the breathable air apparatus; and prescribed pressure of the emergency support system is designated base on a municipality code that specifies a pressure rating of the breathable air apparatus that is used in an authority agency of a particular geographical location. 50
13. The method of claim 12 further comprising: automatically actuating the isolation valve based on an air pressure sensor of the emergency support system; monitoring any of the fill pressure of the fill site and the system pressure of the emergency support system by incorporating a pressure gauge to the fill site; preventing physical damage to the distribution structure potentially compromising the safety and integrity of the emergency support system by utilizing a robust solid casing of the distribution structure; protecting the robust solid casing from any damage using another sleeve at least three times an outer diameter of a pipe of the distribution structure exterior to the robust solid casing; electrically coupling the pressure monitoring system and the fire alarm system of the building structure such that the fire alarm system is automatically triggered through a pressure switch when the system pressure of the emergency support system is outside a safety range; and electrically transmitting a warning signal to an emergency supervising station when the system pressure of the emergency support system is below the prescribed level through the pressure switch.
14. A safety system of a building structure substantially as hereinbefore described with reference to the accompanying drawings. 51
15. A method of safety of a building structure substantially as hereinbefore described with reference to the accompanying drawings. Rescue Air Systems, Inc. Patent Attorneys for the Applicant/Nominated Person SPRUSON & FERGUSON
AU2007284343A 2006-08-16 2007-08-16 Breathable air safety system and method having an air storage sub-system Active AU2007284343B2 (en)

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US11/505,538 2006-08-16
US11/505,599 2006-08-16
US11/505,708 2006-08-16
US11/505,538 US7673629B2 (en) 2006-08-16 2006-08-16 Safety system and method of a tunnel structure
US11/505,525 US7677247B2 (en) 2006-08-16 2006-08-16 Safety system and method of an underground mine
US11/505,599 US7694678B2 (en) 2006-08-16 2006-08-16 Breathable air safety system and method having a fill station
US11/505,708 US7621269B2 (en) 2006-08-16 2006-08-16 Breathable air safety system and method having at least one fill site
US11/505,597 2006-08-16
US11/505,525 2006-08-16
US11/505,597 US7527056B2 (en) 2006-08-16 2006-08-16 Breathable air safety system and method having an air storage sub-system
PCT/US2007/018342 WO2008021538A2 (en) 2006-08-16 2007-08-16 Breathable air safety system and method having an air storage sub-system

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