JPH0244018B2 - - Google Patents

Info

Publication number
JPH0244018B2
JPH0244018B2 JP56163192A JP16319281A JPH0244018B2 JP H0244018 B2 JPH0244018 B2 JP H0244018B2 JP 56163192 A JP56163192 A JP 56163192A JP 16319281 A JP16319281 A JP 16319281A JP H0244018 B2 JPH0244018 B2 JP H0244018B2
Authority
JP
Japan
Prior art keywords
current
metal pipe
coating
connection points
corrosion
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.)
Expired - Lifetime
Application number
JP56163192A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5863845A (ja
Inventor
Masahiro Tsuka
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Osaka Gas Co Ltd
Original Assignee
Osaka Gas Co Ltd
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 Osaka Gas Co Ltd filed Critical Osaka Gas Co Ltd
Priority to JP16319281A priority Critical patent/JPS5863845A/ja
Publication of JPS5863845A publication Critical patent/JPS5863845A/ja
Publication of JPH0244018B2 publication Critical patent/JPH0244018B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
    • G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
    • G01N27/20—Investigating the presence of flaws
    • G01N27/205—Investigating the presence of flaws in insulating materials

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
JP16319281A 1981-10-12 1981-10-12 地中埋設金属管の損傷探知方法 Granted JPS5863845A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16319281A JPS5863845A (ja) 1981-10-12 1981-10-12 地中埋設金属管の損傷探知方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16319281A JPS5863845A (ja) 1981-10-12 1981-10-12 地中埋設金属管の損傷探知方法

Publications (2)

Publication Number Publication Date
JPS5863845A JPS5863845A (ja) 1983-04-15
JPH0244018B2 true JPH0244018B2 (enrdf_load_stackoverflow) 1990-10-02

Family

ID=15769011

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16319281A Granted JPS5863845A (ja) 1981-10-12 1981-10-12 地中埋設金属管の損傷探知方法

Country Status (1)

Country Link
JP (1) JPS5863845A (enrdf_load_stackoverflow)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53134486A (en) * 1977-04-28 1978-11-24 Sumikin Kokan Koji Kk Inspection method and apparatus for flawed parts of coated film on underground coated steel pipes
JPS5421388A (en) * 1977-07-18 1979-02-17 Sumitomo Chemical Co Position detecting method of defect of corrosion resistant coating layer of underground steel pipe

Also Published As

Publication number Publication date
JPS5863845A (ja) 1983-04-15

Similar Documents

Publication Publication Date Title
CA1083528A (en) Method and apparatus for monitoring a cathodically protected corrodible hollow member
US4099117A (en) Method and apparatus for measuring the quality of insulation on a buried pipeline and the quantity of metal oxide present at breaks in the insulation
CN105695997A (zh) 埋地金属管道安全保护方法
DE102012017415A1 (de) Verfahren und Vorrichtung zur Überwachung der Wirksamkeit des kathodischen Korrosionsschutzes von im Erdreich verlegten Anlagen aus Metall
CN115248352A (zh) 埋地管道牺牲阳极阴极保护系统有效性评价方法及装置
US4689552A (en) Method and device for detecting insulation damage to a buried object
CN108595850B (zh) 一种强制电流系统下并行管道阴极保护长度的计算方法
JP2005091191A (ja) 埋設金属管の塗覆装欠陥部検出方法
EP0843823B1 (en) Detection and location of current leakage paths
JPH0244018B2 (enrdf_load_stackoverflow)
JPH0231342B2 (enrdf_load_stackoverflow)
JP2958071B2 (ja) 地中埋設管の電気防食効果評価法
CN110702736A (zh) 基于感应电压分布的埋地管道防腐层破损检测方法
US4152228A (en) Method for reducing electrolytic interference with metal structures
JPH03282268A (ja) 電力ケーブル防食層不良箇所位置検出方式
JPS6243563A (ja) 地中埋設金属管の損傷探知方法
JPH03197858A (ja) 地中埋設物の防食状況の検査方法
JPH1164266A (ja) 塗覆装された埋設金属導体の損傷位置と損傷度の判定装置
JP2532038B2 (ja) 管路内面被覆の探傷方法
JPS60111949A (ja) 塗覆装埋設管の被覆欠陥測定方法
JPH06130021A (ja) 埋設管の防食電位推定方法
SU998584A1 (ru) Способ определени степени защищенности подземных магистральных трубопроводов
JPH03160354A (ja) タンク底板の腐食監視方法
JPS62288558A (ja) 塗覆装を有する金属管の塗覆装欠陥部の検知方法
HU186628B (hu) Eljárás és kapcsolási elrendezés talajban lévő fémes vezetékek korrózióállapotának, ill. a korrózió helyének meghatározására, az aktív korrózióvédelmi berendezés optimális helyének telepítésére és ezek optimális üzemeltetésének beállítására