METHOD OF DETECTION OF GAS LINES SUBJECTED TO CORROSION CRACKING UNDER STRESS

FIELD: construction engineering; operation of pipe lines. SUBSTANCE: proposed method includes detection of zones where pipe line is subjected to considerable tensile stresses in lower portion (gully bottom, concave sections of upthrust folds). Opening of pip line to upper generatrix and locating cir...

Full description

Saved in:
Bibliographic Details
Main Authors ASKAROV R.M, AMINEV F.M, KHAKHALKIN G.I, USMANOV R.R, ISMAGILOV I.G, ASADULLIN M.Z, FAJZULLIN S.M
Format Patent
LanguageEnglish
Russian
Published 20.11.2003
Edition7
Subjects
BLASTING
ENGINEERING ELEMENTS AND UNITS
GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS
HEATING
JOINTS OR FITTINGS FOR PIPES
LIGHTING
MEANS FOR THERMAL INSULATION IN GENERAL
MECHANICAL ENGINEERING
PIPES
SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING
THERMAL INSULATION IN GENERAL
WEAPONS
Online AccessGet full text

Cover

More Information
Summary:FIELD: construction engineering; operation of pipe lines. SUBSTANCE: proposed method includes detection of zones where pipe line is subjected to considerable tensile stresses in lower portion (gully bottom, concave sections of upthrust folds). Opening of pip line to upper generatrix and locating circumferential welds through insulation. Then, pipe line is opened on sides below lower generatrix and trench is manually dug under pipe line. Zone of weld is cleaned and lower part of pipe is checked to transversal cracks by means of flaw detector. If such cracks are revealed, near-weld zone is cleaned from insulation and sizes of transversal cracks are determined. EFFECT: enhanced efficiency. 2 dwg
Bibliography:Application Number: RU20010128323