DK57283D0 - Apparat til pavisning af fejl i isolerende overtraek - Google Patents

Apparat til pavisning af fejl i isolerende overtraek

Info

Publication number
DK57283D0
DK57283D0 DK57283A DK57283A DK57283D0 DK 57283 D0 DK57283 D0 DK 57283D0 DK 57283 A DK57283 A DK 57283A DK 57283 A DK57283 A DK 57283A DK 57283 D0 DK57283 D0 DK 57283D0
Authority
DK
Denmark
Prior art keywords
insulative
coverage
influence
insulative coverage
Prior art date
Application number
DK57283A
Other languages
English (en)
Other versions
DK57283A (da
Inventor
Raymond Toomer
Original Assignee
British Gas Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by British Gas Corp filed Critical British Gas Corp
Publication of DK57283D0 publication Critical patent/DK57283D0/da
Publication of DK57283A publication Critical patent/DK57283A/da

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
    • G01V3/02—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with propagation of electric current
    • G01V3/06—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with propagation of electric current using AC

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Geology (AREA)
  • Remote Sensing (AREA)
  • Physics & Mathematics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Geophysics (AREA)
  • Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
  • Thermistors And Varistors (AREA)
  • Physical Vapour Deposition (AREA)
DK57283A 1982-03-17 1983-02-10 Apparat til paavisning af fejl i isolerende overtraek DK57283A (da)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB08207799A GB2119094A (en) 1982-03-17 1982-03-17 Apparatus for measuring defects in insulation coatings

Publications (2)

Publication Number Publication Date
DK57283D0 true DK57283D0 (da) 1983-02-10
DK57283A DK57283A (da) 1983-09-18

Family

ID=10529067

Family Applications (1)

Application Number Title Priority Date Filing Date
DK57283A DK57283A (da) 1982-03-17 1983-02-10 Apparat til paavisning af fejl i isolerende overtraek

Country Status (6)

Country Link
EP (1) EP0090482A1 (da)
JP (1) JPS58168954A (da)
AU (1) AU1251583A (da)
DK (1) DK57283A (da)
GB (1) GB2119094A (da)
NO (1) NO830835L (da)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4538151A (en) * 1982-03-31 1985-08-27 Nippon Electric Co., Ltd. Electro-magnetic wave absorbing material
GB8304330D0 (en) * 1983-02-16 1983-03-23 Howell M I Electromagnetic surveying of pipes and cables
GB2136131B (en) * 1983-02-16 1987-06-03 Mark Ian Howell Electromagnetic surveying of pipes and cables
JPS6044864A (ja) * 1983-08-22 1985-03-11 Nippon Kokan Kk <Nkk> 地中埋設管塗膜損傷位置探査装置およびその探査方法
GB8400638D0 (en) * 1984-01-11 1984-02-15 Dynalog Electronics Ltd Electromagnetic monitoring of marine pipes
GB2166248B (en) * 1984-10-30 1988-01-20 British Gas Corp Detecting resistance faults
BG41964A1 (en) * 1985-03-29 1987-09-15 Todorov Device for measuring of magnetic field stress
JPS6355448A (ja) * 1986-08-26 1988-03-09 Tokyo Gas Co Ltd 埋設物の被覆劣化の判定方法及びその装置
GB9100589D0 (en) * 1991-01-11 1991-02-27 Technical Software Consultants A.c.field measurement testing system
DE102006003182A1 (de) * 2006-01-23 2007-08-02 TÜV Industrie Service GmbH TÜV SÜD Gruppe Verfahren und Messvorrichtung zur Erfassung von Korrosionsschäden
CN101725834B (zh) * 2008-10-24 2012-12-12 中国石油天然气管道局 管道爬行器磁传感器
RU2504762C1 (ru) * 2012-09-12 2014-01-20 Открытое акционерное общество "Газпром нефть" Способ и устройство бесконтактной внетрубной диагностики подземных трубопроводов

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3745452A (en) * 1971-02-23 1973-07-10 J Osburn Magnetic field gradient apparatus and method for detecting pipe line corrosion
JPS5231787A (en) * 1975-09-05 1977-03-10 Japan Steel & Tube Constr Co Ltd Method of detecting damaged portions of covering of buried pipes
GB1577742A (en) * 1977-05-04 1980-10-29 Electrolocation Ltd Apparatus for and methods of electromagnetic surveying
JPS5422890A (en) * 1977-07-20 1979-02-21 Sumitomo Chem Co Ltd Location of damage of corrosion preventive coating film of steel pipe laid on water bottom
JPS5829875B2 (ja) * 1978-09-04 1983-06-25 ケイディディ株式会社 ケ−ブル探索方式
GB2041531B (en) * 1979-01-29 1983-09-14 British Gas Corp Detecting inaccessible objects
GB2057147B (en) * 1979-08-18 1983-11-23 Geodate Ltd Detecting faults in buried cables
GB2070783B (en) * 1980-03-05 1984-07-04 Howell M I Measuring current in a conductor
GB2075199B (en) * 1980-04-29 1984-03-14 Electrolocation Ltd Detection system for concealed current carrying conductors

Also Published As

Publication number Publication date
GB2119094A (en) 1983-11-09
JPS58168954A (ja) 1983-10-05
AU1251583A (en) 1983-09-22
EP0090482A1 (en) 1983-10-05
DK57283A (da) 1983-09-18
NO830835L (no) 1983-09-19

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Legal Events

Date Code Title Description
AHB Application shelved due to non-payment