CN209496631U - A kind of multipurpose reactor core and Spent Fuel Pool is cooling and the water guiding system that reloads - Google Patents

Abstract

The utility model provides a kind of multipurpose reactor core and Spent Fuel Pool is cooling and the water guiding system that reloads, comprising: Core cooling subsystem, it includes at least three pumps, for selecting wherein any number of pump from fire cistern and/or the water intaking of built-in material-changing water tank, then it converges to main pipe and runs through containment, it is intracavitary to reinject heap；Spent Fuel Pool cooling subsystem comprising at least three pumps and at least three heat exchangers of the outlet connection pumped respectively with each, for selecting wherein any number of pump and the heat exchanger being attached thereto that the water in Spent Fuel Pool is carried out circulating cooling；Reload water guide subsystem comprising at least three pump, and for selection, wherein then any number of pump converges to main pipe and run through containment, reinject reactor refuling pond from the water intaking of built-in material-changing water tank.In the utility model, one or more pump operation is may be selected in each subsystem, optimizes water guide function of reloading, and realizes the refrigerating function under major accident, improves economy of power plant.

Description

A kind of multipurpose reactor core and Spent Fuel Pool is cooling and the water guiding system that reloads

Technical field

The utility model relates to nuclear industry technical fields, and in particular to a kind of multipurpose reactor core and Spent Fuel Pool it is cooling with And the water guiding system that reloads.

Background technique

Reactor core and Spent Fuel Pool cooling and the water guide related system that reloads are important systems relevant to npp safety. As shown in Fig. 2, core cooling system includes two injection series in the prior art, wherein each injection series is respectively from fire water Pond F and built-in material-changing water tank D water intaking injects running through for containment A including 2 pumps (pump 201 and pump 202) and four in total Part (penetration piece 203, penetration piece 204, penetration piece 206 and penetration piece 207).The two injection series finally merge into mother in shell Heap chamber C is injected after pipe 205.Every pump is 50%-100% capacity under the configuration, and separate unit pump capacity is big, and electrical power is high, to SBO (Site Black Out, whole audience power-off) power supply capacity requires height, and the SBO power supply of entire power plant may need to improve from low-pressure stage To medium pressure grade.

As shown in figure 3, Spent Fuel Pool cooling system and the water guiding system that reloads include three pump (pumps in total in the prior art 301,302 are pumped and pumps 303) and its export corresponding three heat exchangers (heat exchanger 304, heat exchanger 305 and heat exchanger 306), pump discharge returns to the pipeline 307 of Spent Fuel Pool E and enters the water guide pipeline 308 of reactor refuling pond B.Spentnuclear fuel Pond cooling system is used to carry out circulating cooling to the water of Spent Fuel Pool, finally takes away the waste heat that spent fuel element is discharged. However, Spent Fuel Pool is workshop dosage height and the naked leakage of weary component etc. may to be brought to ask by evaporator strip heat under major accident Topic.In addition, the water guiding system that reloads carries out water guide using only a pump (pumping 301), flow is lower, and the water guide time is longer.

Utility model content

The utility model is completed in order at least partly solve the technical problems existing in the prior art.

Solving technical solution used by the utility model technical problem is:

The utility model provides a kind of multipurpose reactor core and Spent Fuel Pool is cooling and the water guiding system that reloads comprising:

Core cooling subsystem comprising at least three pump, for select wherein it is any number of pump from fire cistern and/ Or built-in material-changing water tank water intaking, it then converges to main pipe and runs through containment, it is intracavitary to reinject heap；

Spent Fuel Pool cooling subsystem comprising at least three pumps and the outlet pumped respectively with each connect at least Three heat exchangers, for selecting wherein any number of pump and the heat exchanger being attached thereto, by the water in Spent Fuel Pool Carry out circulating cooling；And

Reload water guide subsystem comprising at least three pumps, for selecting wherein any number of pump from the built-in water that reloads Then case water intaking converges to main pipe and runs through containment, reinjects reactor refuling pond.

Optionally, the Core cooling subsystem, the Spent Fuel Pool cooling subsystem and the water guide subsystem that reloads Altogether at least three pumps.

Optionally, the system also includes: for by the Core cooling subsystem, the cooling subsystem of the Spent Fuel Pool Multiple isolating valves that system and the water guide subsystem that reloads are isolated from each other.

Optionally, the isolating valve is divided into:

For the Core cooling subsystem and the water guide subsystem that reloads is isolated, correspond respectively with each pump and At least three isolating valves outside containment；

For the Spent Fuel Pool cooling subsystem to be isolated, respectively with each pump one-to-one correspondence and outside containment At least three isolating valves；

Main pipe isolating valve in main pipe is set outside containment；

Isolating valve in containment on Core cooling subsystem injection pipeline is set；

The isolating valve to be reloaded on water guide subsystem injection pipeline in containment is set；And

Isolating valve outside containment on Spent Fuel Pool cooling subsystem return line is set.

Optionally, the water guide subsystem that reloads further includes injecting the restriction orifice on pipeline positioned at it.

Optionally, the portions on Spent Fuel Pool cooling subsystem return line are divided at least two be connected in parallel Cross-talk recurrent canal is respectively provided with an isolating valve on every section of sub- recurrent canal；The Spent Fuel Pool cooling subsystem further include: At least two pieces of restriction orifices, wherein every piece of restriction orifice is arranged on one section of different sub- recurrent canal.

Optionally, the Core cooling subsystem and the water guide subsystem that reloads share the main pipe, and share with The main pipe connects and the penetration piece on containment is arranged in.

Optionally, the part pipeline section that the main pipe passes through containment is divided into at least two cross-talk main pipes being connected in parallel, Every section of casing passes through an individual penetration piece through containment；

The system also includes:

It is separately positioned on at least two cross-talk main pipes and is located at isolation at least two containments on containment outer portion Wai Valve；And

It is separately positioned on at least two cross-talk main pipes and is located at isolation at least two containments in containment inner part Nei Valve.

Optionally, the Core cooling subsystem and the water guide subsystem that reloads share one piece of restriction orifice, setting In shared main pipe in containment.

Optionally, each pump in shared at least three pumps, passes through pipeline and fire cistern, interior displacement respectively Material water tank is connected with Spent Fuel Pool.

Optionally, the electrical equipment of the system all uses nuclear leve diesel emergency generating set and copes with the non-of station blackout Nuclear leve diesel emergency generating set (i.e. SBO power supply) power supply.

The utility model has the advantages that

In the utility model, at least three pumps are configured for each subsystem, and each subsystem can select according to the actual situation A pump or more pump operations are selected to meet flow demand, reduces demand of its longtime running to SBO power supply capacity；Each subsystem The equipment such as some pipelines and pump, valve are shared between system, greatly reduce power plant cost；Spent Fuel Pool cooling subsystem is tight Heat can be taken away by the operation of pump and heat exchanger under weight accident, avoid the naked leakage of the evaporation weary component of bring and radioactivity gas The problems such as workshop dosage is high caused by body release.In addition, the water source under enriching major accident, in addition to Spent Fuel Pool, also Including fire cistern and built-in material-changing water tank.In addition, more than one pump, which can be used, in the water guide subsystem that reloads carries out water guide operation, Flow is improved, the water guide time is reduced, avoids and carries out water guide using only a pump and the flow that generates is lower, the water guide time Longer problem substantially increases the economy of power plant.

Detailed description of the invention

Fig. 1 is multipurpose reactor core provided by the embodiment of the utility model and Spent Fuel Pool cooling and the water guiding system that reloads Schematic diagram；

Fig. 2 is core cooling system schematic diagram in the prior art；

Fig. 3 is Spent Fuel Pool cooling system in the prior art and the water guiding system schematic diagram that reloads.

In figure: A- containment；B- reactor refuling pond；C- heap chamber；Material-changing water tank built in D-；E- spentnuclear fuel water Pond；F- fire cistern；101,102,103- pump；104,105,106,107,108,109- isolating valve；110,111,112- Heat exchanger；113- main pipe isolating valve；114, the outer isolating valve of 115- containment；116,117- containment isolation valve；118- Restriction orifice；119- Core cooling subsystem injects isolating valve；120- reload water guide subsystem injection isolating valve；121- is changed Expect water guide subsystem restriction orifice；122,123- Spent Fuel Pool cooling subsystem return line isolating valve；124,125- is weary Fuel pit cooling subsystem return line restriction orifice；126- main pipe；127,128,129- penetration piece；130- spentnuclear fuel Pond cooling subsystem return line；201,202- is pumped；203,204,206,207- penetration piece；205- main pipe；301,302, 303- pump；304,305,306- heat exchanger；The pipeline of 307- pump discharge return Spent Fuel Pool；308- enters reactor and changes Expect the water guide pipeline in pond.

Specific embodiment

To make those skilled in the art more fully understand the technical solution of the utility model, with reference to the accompanying drawings and examples The utility model is described in further detail.

In order to solve the technical problems existing in the prior art, the utility model embodiment provide a kind of multipurpose reactor core and Spent Fuel Pool cooling and the water guiding system that reloads comprising:

Core cooling subsystem comprising at least three pumps, for select wherein any number of pump from fire cistern and The water intaking of built-in material-changing water tank, then converges to main pipe and through containment, and it is intracavitary to reinject heap, is held by cooled reactor pressure Device outside wall surface cools down reactor core；

Spent Fuel Pool cooling subsystem comprising at least three pumps and the outlet pumped respectively with each connect at least Three heat exchangers, for selecting wherein any number of pump and the heat exchanger being attached thereto, by the water in Spent Fuel Pool Circulating cooling is carried out, the waste heat that spent fuel element is discharged finally is taken away；

Reload water guide subsystem comprising at least three pumps, for selecting wherein any number of pump from the built-in water that reloads Then case water intaking converges to main pipe and runs through containment, reactor refuling pond reinjected, periodically to switch nuclear fuel.

Wherein, Core cooling subsystem can also optionally only fetch water from fire cistern, or only from built-in material-changing water tank Water intaking.Spent Fuel Pool is located at outside containment, and reactor refuling pond and built-in material-changing water tank are located in containment.

In the present embodiment, at least three pumps are configured for each subsystem, and each subsystem can select according to the actual situation One pump or more pump operations reduce demand of its longtime running to SBO power supply capacity to meet flow demand；Spentnuclear fuel water Pond cooling subsystem can take away heat by the operation of pump and heat exchanger under major accident, avoid weary group of bring of evaporation The problems such as workshop dosage is high caused by the naked leakage of part and radgas release；The water guide subsystem that reloads can be used more than one Pump carries out water guide operation, improves flow, reduces the water guide time, avoids the stream for carrying out water guide using only a pump and generating Lower, water guide time longer problem is measured, the economy of power plant is substantially increased.

More preferably, Core cooling subsystem, Spent Fuel Pool cooling subsystem and the water guide subsystem that reloads share it is above-mentioned extremely Few three pumps.

In the present embodiment, Core cooling subsystem, Spent Fuel Pool cooling subsystem and water guide subsystem common pump of reloading, Under the premise of guaranteeing power plant safety, power plant cost is greatly reduced, economy is improved.

The specific structure of the system is described in detail below with reference to Fig. 1:

As shown in Figure 1, Core cooling subsystem includes pump 101, pump 102 and pump 103, for selecting appointing in this three pumps Meaning one or several is fetched water from fire cistern F and built-in material-changing water tank D, and every pump from fire cistern F and built-in can reload Water tank D water intaking, then converges to main pipe and through containment A, reinjects in heap chamber C, by cooled reactor pressure vessel outside Wall surface cools down reactor core；Spent Fuel Pool cooling subsystem includes pump 101, pump 102 and pumps 103, and pumped respectively with each Export connection heat exchanger 110, heat exchanger 111 and heat exchanger 112, for select this three pump in any one or Water in Spent Fuel Pool E is carried out circulating cooling by several and the heat exchanger that is attached thereto, finally takes away spent fuel element The waste heat discharged；The water guide subsystem that reloads also includes pump 101, pumps 102 and pump 103, any in this three pumps for selecting One or several is fetched water from built-in material-changing water tank D, is then converged to main pipe and is run through containment A, reinjects reactor refuling water Pond B, periodically to switch nuclear fuel.

As it can be seen that Core cooling subsystem, Spent Fuel Pool cooling subsystem and water guide subsystem common pump 101 of reloading, pump 102 and pump 103, correspondingly, also need to share some pipelines and equipment (hereinafter will be described in).

In addition, during three subsystems operation, the system also includes: it is used for Core cooling subsystem, spentnuclear fuel Multiple isolating valves that pond cooling subsystem and the water guide subsystem that reloads are isolated from each other.

Specifically, these isolating valves can be divided into:

For Core cooling subsystem being isolated and the water guide subsystem that reloads, a pair of with pump 101, pump 102 and pump 103 1 respectively Isolating valve 104, isolating valve 105 and the isolating valve 106 answered and be located at outside containment A, wherein one end of each isolating valve is right with it Pump discharge connection, the other end and the main pipe answered connect；

For Spent Fuel Pool cooling subsystem to be isolated, corresponded respectively with pump 101, pump 102 and pump 103 and is located at peace Isolating valve 107, isolating valve 108 and isolating valve 109 outside full shell A, wherein the pump discharge that one end of each isolating valve is corresponding The Heating medium connection of the corresponding heat exchanger of connection, the other end；

Main pipe isolating valve 113 outside containment in main pipe 126 is set；

Isolating valve 119 in containment on Core cooling subsystem injection pipeline is set；

The isolating valve 120 to be reloaded on water guide subsystem injection pipeline in containment is set；And

Isolating valve 122 and isolating valve outside containment on Spent Fuel Pool cooling subsystem return line 130 are set 123, the two is in parallel, certainly, an isolating valve, or the isolating valve of setting more multi-parallel can also only be arranged according to the actual situation.

In the present embodiment, when the operation of Core cooling subsystem, close for Spent Fuel Pool cooling subsystem to be isolated Isolating valve 107, isolating valve 108 and isolating valve 109, and close the water guide subsystem injection isolating valve 120 that reloads；Reload water guide When system is run, according to power plant's practical operation situation, with Spent Fuel Pool cooling subsystem with the use of three pumps (pump 101, 103), such as a pump is cooling for Spent Fuel Pool, and in addition two pumps are then used for the water guide that reloads, and switch phase for pump 102 and pump So that Spent Fuel Pool is cooling and the water guide that reloads is able to achieve, while Core cooling subsystem is isolated in the isolating valve of pass；Spentnuclear fuel Pond cooling subsystem run when, close for be isolated Core cooling subsystem and reload water guide subsystem isolating valve 104, every From valve 5 and isolating valve 6.

In order to more accurately realize flow control, the water guide subsystem that reloads further includes injecting the metering hole on pipeline positioned at it Plate 121.

In the present embodiment, the water guide subsystem restriction orifice 121 that reloads be located at reload water guide subsystem injection isolating valve 120 with Between the B of reactor refuling pond.

More preferably, the portions on Spent Fuel Pool cooling subsystem return line 130 are divided into two be connected in parallel Cross-talk recurrent canal is provided with isolating valve 123 on another cross-talk recurrent canal wherein being provided with isolating valve 122 on a cross-talk recurrent canal. In order to more accurately realize flow control, Spent Fuel Pool cooling subsystem further include: restriction orifice 124 and restriction orifice 125, Wherein every piece of restriction orifice is arranged on one section of different sub- recurrent canal.In other words, Spent Fuel Pool cooling subsystem returns Isolating valve 123 and 124, restriction orifice 124 and 125 and its place pipeline on pipeline are arranged in parallel.

Wherein, restriction orifice 124 and the same setting of isolating valve 122 are on a cross-talk recurrent canal, restriction orifice 125 and isolating valve 123 same settings are on another cross-talk recurrent canal.Certainly, those skilled in the art can also be cold by Spent Fuel Pool according to the actual situation But the portions on subsystem return line are divided into more multi-parallel pipe, or do not divide, and need to only guarantee every cross-talk pipe On be correspondingly arranged an isolating valve and one piece of restriction orifice.

In the present embodiment, in order to improve power plant's reliability, valve has been arranged in parallel on Spent Fuel Pool cooling circuit And pipeline, realize the assignment of traffic of single pump and Duo Tai pump operation.

When pump 101, pump 102 are fetched water with pump 103 from built-in material-changing water tank D, water intaking pipeline need to be by penetration piece 129 through peace Full shell A.

Core cooling subsystem and the water guide subsystem that reloads share main pipe 126, and share and connect and be arranged with main pipe 126 Penetration piece on containment A.

More preferably, the part pipeline section that main pipe 126 passes through containment A is divided into two cross-talk main pipes being connected in parallel, wherein One cross-talk main pipe runs through containment A by penetration piece 127, and another cross-talk main pipe runs through containment A by penetration piece 128.Certainly, The part pipeline section that main pipe passes through containment can be also divided into more multi-parallel primary and secondary according to the actual situation by those skilled in the art Pipe, or do not divide, only it need to guarantee to be correspondingly arranged a penetration piece in every cross-talk main pipe.

Correspondingly, the system also includes:

It is separately positioned on the outer isolating valve 114 of containment and containment that the two cross-talks main pipe is located on containment outer portion Outer isolating valve 115；And

It is separately positioned on the containment isolation valve 116 and containment that the two cross-talks main pipe is located in containment inner part Outer isolating valve 117.

In other words, containment outer isolating valve 114 and 115, containment isolation valve 116 and 117, injection containment run through Part 127 and 128 and its place pipeline are arranged in parallel.

Wherein, the outer isolating valve 114 of containment, penetration piece 127 and containment isolation valve 116 are with setting in a cross-talk main pipe On, the outer isolating valve 115 of containment, penetration piece 128 and the outer isolating valve 117 of containment are with setting in another cross-talk main pipe.

In the present embodiment, in order to improve power plant's reliability, it is arranged in parallel on Core cooling and water guide circuit of reloading Valve and pipeline realize the assignment of traffic of single pump and Duo Tai pump operation.

Core cooling subsystem and the water guide subsystem that reloads share one piece of restriction orifice 118, are arranged in containment It shares in main pipe 126, more accurately to realize flow control.

As it can be seen that Core cooling subsystem and reload water guide subsystem in addition to share main pipe 126 other than, also share main pipe isolation Valve 113, the penetration piece 127 and 128 for injecting containment, containment outer isolating valve 114 and 115,116 and of containment isolation valve 117 and shared restriction orifice 118 greatly reduce power plant cost under the premise of guaranteeing power plant safety, improve economy Property.

As shown in Figure 1, being designed as safety level positioned at a side section in the system banner, non-a side section is designed as non-peace Full grade.

The present embodiment has carried out the division of safety level and non-security grade to system, optimizes system design, is guaranteeing power plant Under the premise of safety, power plant cost is greatly reduced, improves economy.

In the prior art, Spent Fuel Pool cooling system, since pump does not load SBO power supply, causes after major accident The heat of spentnuclear fuel can only realize the function that heat is taken away by evaporation, will cause the radioactivity gas of spentnuclear fuel handling hall in this way Body diffusion, increases the dosage of workshop significantly；Moreover, because the water of Spent Fuel Pool E is limited, if Spent Fuel Pool is long-term Lose it is cold may result in weary component and naked leakage problem occur, and then the reaction of zirconium water may occur and generate hydrogen, threaten spentnuclear fuel workshop Integrality, to influence the safety of power plant.

To solve the above problems, the electrical equipment of the system all uses nuclear leve diesel emergency generating set and copes with full factory Non- nuclear leve diesel emergency generating set (the i.e. SBO power supply) power supply of power-off.

In the present embodiment, during power plant is in design basis accident and major accident, even if full factory loss of power, weary combustion Material pond cooling subsystem still can reliably take away the waste heat that spent fuel element is discharged by pump circulation, avoid serious thing Under therefore, the heat for pumping unavailable caused spentnuclear fuel can only realize that heat be taken away by evaporation, cause spentnuclear fuel handling hall Radgas diffusion, the problem of increasing the dosage of workshop significantly, and avoid Spent Fuel Pool lose for a long time it is cold caused by There is naked leakage problem in weary component, improves the safety of power plant.

In addition, each subsystem can select a pump operation or more pump operations to meet its stream according to the actual situation Amount demand, i.e., using the configuration of single subsystem operation single pump or more pumps, to reduce pump longtime running to SBO power supply The demand of capacity.

Each pump in pump 101, pump 102 and pump 103, passes through pipeline and fire cistern F, built-in material-changing water tank D respectively It is connected with Spent Fuel Pool E.In other words, this three pumps can take from fire cistern F, built-in material-changing water tank D and Spent Fuel Pool E Water enriches the diversity at water source during major accident, further improves the safety of power plant.

In conclusion multipurpose reactor core provided by the utility model and Spent Fuel Pool cooling and the water guiding system that reloads, It can be achieved under design basis accident and severe accident conditions, the cooling to Spent Fuel Pool, take away the postdose fuel in storage The waste heat that element is discharged；It can also be achieved under normal running (operation) conditions, to reactor refuling pond water guide when reloading, it is anti-to provide biology The water layer of shield；And realize under severe accident conditions, reactor core fusant heat is taken away by cooling pressure container outer wall, thus Ensure that pressure vessel is not fused, maintain the integrality of pressure vessel, mitigates the consequence of accident.The utility model substantially increases Safety, reliability and the economy of power plant.

It is understood that embodiment of above is merely to illustrate that the principles of the present invention and uses exemplary Embodiment, however the utility model is not limited thereto.For those skilled in the art, this is not being departed from In the case where the spirit and essence of utility model, various changes and modifications can be made therein, these variations and modifications are also considered as this reality With novel protection scope.

Claims (11)

1. a kind of multipurpose reactor core and Spent Fuel Pool cooling and the water guiding system that reloads characterized by comprising

Core cooling subsystem comprising at least three pumps, for select wherein any number of pump from fire cistern and/or interior Material-changing water tank water intaking is set, main pipe is then converged to and runs through containment, it is intracavitary to reinject heap；

Spent Fuel Pool cooling subsystem comprising at least three pumps and at least three for exporting connection pumped respectively with each Heat exchanger carries out the water in Spent Fuel Pool for selecting wherein any number of pump and the heat exchanger being attached thereto Circulating cooling；And

Reload water guide subsystem comprising at least three pumps, for selection, wherein any number of pump from built-in material-changing water tank is taken Then water converges to main pipe and runs through containment, reinjects reactor refuling pond.

2. system according to claim 1, which is characterized in that the Core cooling subsystem, the Spent Fuel Pool are cold But subsystem and the water guide subsystem that reloads share at least three pumps.

3. system according to claim 2, which is characterized in that further include: for by the Core cooling subsystem, described Multiple isolating valves that Spent Fuel Pool cooling subsystem and the water guide subsystem that reloads are isolated from each other.

4. system according to claim 3, which is characterized in that the isolating valve is divided into:

For the Core cooling subsystem and the water guide subsystem that reloads to be isolated, with each pump corresponds and is located at respectively At least three isolating valves outside containment；

For be isolated the Spent Fuel Pool cooling subsystem, respectively with each pump correspond and be located at containment outside at least Three isolating valves；

Main pipe isolating valve in main pipe is set outside containment；

Isolating valve in containment on Core cooling subsystem injection pipeline is set；

The isolating valve to be reloaded on water guide subsystem injection pipeline in containment is set；And

Isolating valve outside containment on Spent Fuel Pool cooling subsystem return line is set.

5. system according to claim 4, which is characterized in that the water guide subsystem that reloads further includes being located at its injection pipe Restriction orifice on line.

6. system according to claim 4, which is characterized in that the part on Spent Fuel Pool cooling subsystem return line Pipeline section is divided into at least two cross-talk recurrent canals being connected in parallel, and is respectively provided with an isolating valve on every section of sub- recurrent canal；It is described Spent Fuel Pool cooling subsystem further include: at least two pieces of restriction orifices, wherein every piece of restriction orifice is arranged at a Duan Butong Sub- recurrent canal on.

7. system according to claim 2, which is characterized in that the Core cooling subsystem and the water guide subsystem that reloads Altogether with the main pipe, and shares and connect with the main pipe and the penetration piece on containment is set.

8. system according to claim 7, which is characterized in that the part pipeline section that the main pipe passes through containment is divided into At least two cross-talk main pipes being connected in parallel, every section of casing pass through an individual penetration piece through containment；

The system also includes:

It is separately positioned on at least two cross-talk main pipes and is located at isolating valve at least two containments on containment outer portion Wai；With And

It is separately positioned on at least two cross-talk main pipes and is located at least two containment isolation valves in containment inner part.

9. system according to claim 7, which is characterized in that the Core cooling subsystem and the water guide subsystem that reloads Altogether with one piece of restriction orifice, it is arranged in the shared main pipe in containment.

10. system according to claim 1 to 9, which is characterized in that in shared at least three pumps Each pump, is connect by pipeline with fire cistern, built-in material-changing water tank and Spent Fuel Pool respectively.

11. system according to claim 1 to 9, which is characterized in that the electrical equipment of the system all uses The non-nuclear leve diesel emergency generating set power supply of nuclear leve diesel emergency generating set and reply station blackout.