FR2385030A1 - Inhibition of crack propagation in gas pipelines - by surrounding with strengthening steel rope at intervals - Google Patents
Inhibition of crack propagation in gas pipelines - by surrounding with strengthening steel rope at intervalsInfo
- Publication number
- FR2385030A1 FR2385030A1 FR7708765A FR7708765A FR2385030A1 FR 2385030 A1 FR2385030 A1 FR 2385030A1 FR 7708765 A FR7708765 A FR 7708765A FR 7708765 A FR7708765 A FR 7708765A FR 2385030 A1 FR2385030 A1 FR 2385030A1
- Authority
- FR
- France
- Prior art keywords
- gasline
- steel rope
- gaslines
- surrounding
- intervals
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L57/00—Protection of pipes or objects of similar shape against external or internal damage or wear
- F16L57/02—Protection of pipes or objects of similar shape against external or internal damage or wear against cracking or buckling
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Abstract
The propagation of cracks in gaslines is inhibited by steel rope wound around pipeline at intervals along its length so that a surrounding portion of the line has the relationship Cveq/Cva >=3 (where Cva is the Charpy energy per unit area measured transversely of the unstrengthened line and Cveq is the equiv. Charpy energy per unit area of the strengthened portions of the gasline). Steel rope is pref. wound around the gasline without applying tension to the rope which has an ultimate tensile strength of 100-200 kg/mm2 and a Young's modulus of 18,000 - 21,000 kg/mm2. Damage to gasline by the propagation of a crack is reduced and the system may be applied during gasline installations or to gaslines already in use. Gaslines with pipes of poorer quality may be utilised.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7708765A FR2385030A1 (en) | 1977-03-24 | 1977-03-24 | Inhibition of crack propagation in gas pipelines - by surrounding with strengthening steel rope at intervals |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7708765A FR2385030A1 (en) | 1977-03-24 | 1977-03-24 | Inhibition of crack propagation in gas pipelines - by surrounding with strengthening steel rope at intervals |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2385030A1 true FR2385030A1 (en) | 1978-10-20 |
Family
ID=9188500
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7708765A Withdrawn FR2385030A1 (en) | 1977-03-24 | 1977-03-24 | Inhibition of crack propagation in gas pipelines - by surrounding with strengthening steel rope at intervals |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2385030A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0687849A1 (en) * | 1994-06-16 | 1995-12-20 | EMPA Eidgenössische Materialprüfungs- und Forschungsanstalt | Method of limiting fast crack propagation in plastic pipes and pipes obtained by such method |
-
1977
- 1977-03-24 FR FR7708765A patent/FR2385030A1/en not_active Withdrawn
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0687849A1 (en) * | 1994-06-16 | 1995-12-20 | EMPA Eidgenössische Materialprüfungs- und Forschungsanstalt | Method of limiting fast crack propagation in plastic pipes and pipes obtained by such method |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
PT1102698E (en) | SUBAQUATIC TUBE PLACING SHIPS AND METHODS | |
NO20015615L (en) | Steel pipe with heat insulation for submarine pipelines and process for its manufacture | |
IT9022395A0 (en) | DEVICE AND PROCEDURE FOR REAL-TIME MONITORING OF ACCIDENTAL DAMAGE TO THE PROTECTIVE COATINGS OF BURIED OR IMMERSED PIPES OR METAL STRUCTURES | |
FR2385030A1 (en) | Inhibition of crack propagation in gas pipelines - by surrounding with strengthening steel rope at intervals | |
US4180104A (en) | Out of contact highly geometrical crack arrestor | |
DE69011927D1 (en) | Steel pipe, method of welding the same and carbon dioxide corrosion resistant pipe. | |
ATE154843T1 (en) | METHOD FOR LAYING UNDERWATER PIPING IN DEEP WATER | |
RU72524U1 (en) | PIPE FOR THE GROUND PIPELINE | |
CA1093483A (en) | Method for inhibiting the propagation of cracks in gaslines | |
Bassim et al. | Leak detection in gas pipelines using acoustic emission | |
CN109667264A (en) | A kind of installation guard method of fiber-optic grating sensor on overlength anchor cable | |
GB2162097A (en) | Plate for fabricating gas transmission pipelines | |
JPS53116264A (en) | Tack welding method for seam of steel pipe | |
Ramacciotti | Plate for Fabricating Gas Transmission Pipelines | |
Demofonti et al. | Propagation of tough fracture in the pipelines of high pressure | |
JPS54118619A (en) | Method of silencing resonance sound of steel pipe and of increasing strength | |
FR2334606A1 (en) | Pipelines reinforced by wrapping with steel strips - has wrapping tension equalised to avoid pipe distortion by simultaneous winding of two spaced sections | |
Masumoto et al. | Fractographical Appearances and Surface Changes in Atmospheric Corrosion Fatigue | |
Ainsworth | Flaw assessment methods using failure assessment diagrams | |
Slade | Frigg IV Pipeline- river Forth estuary crossing | |
Verpoest et al. | The fatigue limit of steel wires as determined by the fatigue threshold and the surface characteristics | |
JPS5740188A (en) | Steel pipe for pipeline with transmission stopping characteristics of unstable ductility breaking | |
Majoros et al. | TESTING THE CORROSION PROPERTIES OF MICROALLOYED STEELS WITH IMPROVED YIELD POINT | |
Lebedev et al. | An Innovation in Welded Main Pipeline Construction Technology | |
FR2357457A2 (en) | Pipelines reinforced by wrapping with steel strips - has wrapping tension equalised to avoid pipe distortion by simultaneous winding of two spaced sections |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |