Effect of Applied Voltage on the Reliability of Coating Flaw Detection of Pipe with Different Buried Depths
1
조회
0
다운로드
3
인용
0
참고문헌
키워드
초록
External corrosion control of buried pipe can be achieved by the combination of barrier coating and cathodic protection. Coating damage and deterioration can be induced by many reasons; damage during handling and laying, enhanced failure at low temperatures, failure during commissioning and operation, disbanding due to inadequate surface cleaning, rock penetration during installation and service etc. This work focused on the effect of survey conditions on the reliability of coating flaw detection of buried pipes. The effects of applied voltage and anode location on the detection reliability of coating flaw of buried pipe in soil with the resistivity of ca. 25.8 kΩ·cm were discussed. Higher applied voltage increased the detection reliability, regardless of buried depth, but deeper burial depth reduced the reliability. The location of the anode has influenced on the detection reliability. This behaviour may be induced by the variation of current distribution by the applied voltage and buried depth. From the relationship between the applied voltage and reliability, the needed detection potential to get a desire detection reliability can be calculated to get 100% detection reliability using the derived equation.
Abstract
External corrosion control of buried pipe can be achieved by the combination of barrier coating and cathodic protection. Coating damage and deterioration can be induced by many reasons; damage during handling and laying, enhanced failure at low temperatures, failure during commissioning and operation, disbanding due to inadequate surface cleaning, rock penetration during installation and service etc. This work focused on the effect of survey conditions on the reliability of coating flaw detection of buried pipes. The effects of applied voltage and anode location on the detection reliability of coating flaw of buried pipe in soil with the resistivity of ca. 25.8 kΩ·cm were discussed. Higher applied voltage increased the detection reliability, regardless of buried depth, but deeper burial depth reduced the reliability. The location of the anode has influenced on the detection reliability. This behaviour may be induced by the variation of current distribution by the applied voltage and buried depth. From the relationship between the applied voltage and reliability, the needed detection potential to get a desire detection reliability can be calculated to get 100% detection reliability using the derived equation.
참고문헌 (28)
- J. G. Kim, , Corros. Sci, 43, pp.2011~ (2001)
- I. Gurrappa, , J. Mater. Process. Technol, 166, pp.256~ (2005)
- E. S. Ibrahim, , Electr. Pow. Syst. Res, 52, pp.9~ (1999)
- S. Srikanth, , Eng. Fail. Anal, 12, pp.634~ (2005)
- A. Osella, , Appl. Geophys, 38, pp.219~ (1998)
- A. Osella, , Appl. Geophys, 44, pp.303~ (2000)
- I. A. Metwally, , Eng. Anal. Bound. Elem, 31, pp.485~ (2007)
- L. C. Wrobel, , Eng. Anal. Bound. Elem, 28, pp.267~ (2004)
- R. A. Gummow, , J. Atmos. Sol. -Terr. Phys, 64, pp.1755~ (2002)
- O. Abootalebi, , Corros. Sci, 52, pp.678~ (2010)
- S. A. Shipilov, , Eng. Fail. Anal, 13, pp.1159~ (2006)
- D. H. Boteler, , Proc. Corrosion 2013 Conf., pp.2522~ (2013), NACE International
- A. Osella, , Corrosion, 55, pp.699~ (1999)
- Z. Masilela, , Eng. Fail. Anal, 5, pp.99~ (1998)
- 박정훈, "MFL 비파괴 검사 시스템에서 다중 결함에 의한 신호 왜곡과 신호 보정에 관한 연구", 한국자기학회지, 26(1), pp.24~30 (2016), 한국자기학회
- S. L. Shin, , J. Hazard. Mater, 342, pp.279~ (2018)
- 정범진, "FDS를 이용한 화재시 연소가스의 독성평가에 관한 비교 연구", 한국가스학회지, 19(1), pp.38~44 (2015), 한국가스학회[DOI]
- 김진준, "매설배관의 방식전위 측정시스템 개발에 관한 연구", 한국가스학회지, 18(5), pp.66~71 (2014), 한국가스학회[DOI]
- J. O. Jeong, , J. Korean Soc. Nondestruc. Test, 21, pp.556~ (2001)
- Y. D. Ryou, , J. Korean Inst. Gas, 20, pp.50~ (2016)
- K. J. Satsios, , Eur. T. Electr. Power, 8, pp.193~ (1998)
- Y. B. Cho, , Proc. International Pipeline Conf., pp.463~ (1996), ASME International
- M. Magura, , Procedia Engineer, 40, pp.50~ (2012)
- Y. B. Cho, , Corros. Sci. Tech, 24, pp.167~ (1995)
- APEC Validation for Reasonable Assurance of Buried Piping Integrity, "A. Smart", EPRI, ~ (2014)
- 장현영, "국내원전에 매설된 콜타르 코팅 배관의 음극방식과 FEM법을 이용한 방식성능 시뮬레이션", CORROSION SCIENCE AND TECHNOLOGY, 16(3), pp.115~127 (2017), 한국부식방식학회[DOI]
- H. Y. Chang, , Trans. Korean Soc. Press. Vessel, 11, pp.61~ (2015)
- 김기태, "REAL-TIME CORROSION CONTROL SYSTEM FOR CATHODIC PROTECTION OF BURIED PIPES FOR NUCLEAR POWER PLANT", CORROSION SCIENCE AND TECHNOLOGY, 14(1), pp.12~18 (2015), 한국부식방식학회[DOI]