RU95102302A - Method of prevention of propagation of defects in pipe line walls - Google Patents
Method of prevention of propagation of defects in pipe line wallsInfo
- Publication number
- RU95102302A RU95102302A RU95102302/06A RU95102302A RU95102302A RU 95102302 A RU95102302 A RU 95102302A RU 95102302/06 A RU95102302/06 A RU 95102302/06A RU 95102302 A RU95102302 A RU 95102302A RU 95102302 A RU95102302 A RU 95102302A
- Authority
- RU
- Russia
- Prior art keywords
- pressure
- defects
- pipe line
- pipe
- halves
- Prior art date
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
- F16L58/00—Protection of pipes or pipe fittings against corrosion or incrustation
- F16L58/02—Protection of pipes or pipe fittings against corrosion or incrustation by means of internal or external coatings
- F16L58/16—Protection of pipes or pipe fittings against corrosion or incrustation by means of internal or external coatings the coating being in the form of a bandage
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Abstract
FIELD: operation of gas and petroleum product pipe lines. SUBSTANCE: if defects are revealed in pipe line walls, pressure is reduced in this pipe line to required value and steel sleeve consisting of two halves is fitted on pipe line without discontinuation of its operation, after which sleeve halves are welded together. This done, pressure is restored to working level; as a result, sleeve presses defective section of pipe line reducing circular tensile stresses which give rise to propagation of defects. Similar effect is obtained without reducing the pressure in pipe line at pressing thew sleeve halves on the outside before welding them by hydraulic chain clamp. To exclude defects in weld seams, ends of sleeves are welded to load-bearing pipe by means of circumferential fillet seams. Sleeves may be also made in form of sheet structures wound on pipe at reduced pressure. EFFECT: enhanced reliability.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
RU95102302A RU2097646C1 (en) | 1995-02-17 | 1995-02-17 | Method of prevention of development of flaws in pipe line walls |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
RU95102302A RU2097646C1 (en) | 1995-02-17 | 1995-02-17 | Method of prevention of development of flaws in pipe line walls |
Publications (2)
Publication Number | Publication Date |
---|---|
RU95102302A true RU95102302A (en) | 1997-05-20 |
RU2097646C1 RU2097646C1 (en) | 1997-11-27 |
Family
ID=20164897
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
RU95102302A RU2097646C1 (en) | 1995-02-17 | 1995-02-17 | Method of prevention of development of flaws in pipe line walls |
Country Status (1)
Country | Link |
---|---|
RU (1) | RU2097646C1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2484359C1 (en) * | 2011-11-01 | 2013-06-10 | Общество с ограниченной ответственностью "ВолгаУралСпецстрой" | Method of pipeline repair and device to this end |
RU2601782C1 (en) * | 2015-06-10 | 2016-11-10 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Уфимский государственный нефтяной технический университет" | Method for pipeline restoration and device for implementation thereof |
RU2693940C1 (en) * | 2018-03-29 | 2019-07-08 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Уфимский государственный нефтяной технический университет" | Method of sealing cracks in pipeline wall and device for its implementation |
-
1995
- 1995-02-17 RU RU95102302A patent/RU2097646C1/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
RU2097646C1 (en) | 1997-11-27 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
MM4A | The patent is invalid due to non-payment of fees |
Effective date: 20070218 |