Title:
パイプラインについての結果を検知するためのDCVG-CIPS測定装置
Document Type and Number:
Japanese Patent JP4417853
Kind Code:
B2
Abstract:
The present invention relates to a pipeline examination apparatus for Direct Current Voltage Gradient (DCVG) and Closed Interval Potential Survey (CIPS) methods. The pipeline examination apparatus of the present invention detects and analyzes at least one electrode signal while supplying an anticorrosive current to a buried pipeline by switching on and off the anticorrosive current at predetermined intervals. The pipeline examination apparatus includes a signal detection unit and a measurement unit. The signal detection unit detects the electrode signal including a DCVG electrode signal and/or a CIPS electrode signal. The measurement unit receives the electrode signal from the signal detection unit and analyzes the electrode signal. The measurement unit includes a measurement method selection unit, a control unit, a storage unit, an analysis unit and a display unit.
Inventors:
Go, Yonte
John, Zeyoung
Bak, Kyung Wan
Zo, yongbom
Lee Sung-yeob
Kim, Young Gun
John, Zeyoung
Bak, Kyung Wan
Zo, yongbom
Lee Sung-yeob
Kim, Young Gun
Application Number:
JP2004571352A
Publication Date:
February 17, 2010
Filing Date:
June 30, 2003
Export Citation:
Assignee:
Korea Gas Corporation
International Classes:
G01N27/26; G01N17/02; G01N27/20; G01N27/416
Domestic Patent References:
| JP4095868A | ||||
| JP10185800A | ||||
| JP10332622A | ||||
| JP4331900A | ||||
| JP6249820A | ||||
| JP2038963A | ||||
| JP9281069A | ||||
| JP61209349A | ||||
| JP62288558A | ||||
| JP46016457B1 |
Attorney, Agent or Firm:
Masayoshi Suda