JPH0378578B2 - - Google Patents

Info

Publication number
JPH0378578B2
JPH0378578B2 JP58152631A JP15263183A JPH0378578B2 JP H0378578 B2 JPH0378578 B2 JP H0378578B2 JP 58152631 A JP58152631 A JP 58152631A JP 15263183 A JP15263183 A JP 15263183A JP H0378578 B2 JPH0378578 B2 JP H0378578B2
Authority
JP
Japan
Prior art keywords
magnetic field
underground pipe
detection device
pipe
current component
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
JP58152631A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6044864A (ja
Inventor
Takeo Yamada
Hiroyuki Hojo
Akio Nagamune
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.)
JFE Engineering Corp
Original Assignee
Nippon Kokan 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 Nippon Kokan Ltd filed Critical Nippon Kokan Ltd
Priority to JP15263183A priority Critical patent/JPS6044864A/ja
Publication of JPS6044864A publication Critical patent/JPS6044864A/ja
Publication of JPH0378578B2 publication Critical patent/JPH0378578B2/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
    • G01N27/72—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables
    • G01N27/82—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws

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)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
  • Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
JP15263183A 1983-08-22 1983-08-22 地中埋設管塗膜損傷位置探査装置およびその探査方法 Granted JPS6044864A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15263183A JPS6044864A (ja) 1983-08-22 1983-08-22 地中埋設管塗膜損傷位置探査装置およびその探査方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15263183A JPS6044864A (ja) 1983-08-22 1983-08-22 地中埋設管塗膜損傷位置探査装置およびその探査方法

Publications (2)

Publication Number Publication Date
JPS6044864A JPS6044864A (ja) 1985-03-11
JPH0378578B2 true JPH0378578B2 (enExample) 1991-12-16

Family

ID=15544604

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15263183A Granted JPS6044864A (ja) 1983-08-22 1983-08-22 地中埋設管塗膜損傷位置探査装置およびその探査方法

Country Status (1)

Country Link
JP (1) JPS6044864A (enExample)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2546117A2 (en) 2011-07-11 2013-01-16 Nissin Kogyo Co., Ltd. Motor pump

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6243563A (ja) * 1985-08-20 1987-02-25 Osaka Gas Co Ltd 地中埋設金属管の損傷探知方法

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2119094A (en) * 1982-03-17 1983-11-09 British Gas Corp Apparatus for measuring defects in insulation coatings

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2546117A2 (en) 2011-07-11 2013-01-16 Nissin Kogyo Co., Ltd. Motor pump

Also Published As

Publication number Publication date
JPS6044864A (ja) 1985-03-11

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