ECDA (External Corrosion Direct Assessment)

￭ 방식(CP) 시스템과 피복 품질에 대한 검사
￭ 모재손상(부식진행) 확률이 높은 지점을 직접 굴착 검사
￭ 부식원인에 대한 정보 (root cause) 제공




매설구조물 부식진단 I

CP management and routine surveys

￭ On/OFF potential measurement

￭ Soil resistivity measurement

￭ Pipeline locating survey

￭ Isolation test

￭ Soundness of CP facilities (TB and rectifier, etc)






매설구조물 부식진단 II

CP in-depth surveys

￭ CIPS (Close Interval Potential Survey)t

￭ Coating Defect Survey (DCVG)t

￭ Static (dynamic) interference survey t

￭ Temporary ICCP tests for CP retrofit

피복손상탐측 (DCVG)


매설구조물 부식진단 방식시공 III

ECDA (External Corrosion Direct Assessment)

￭ Based on NACE RP0502-2002

￭ Inspect the soundness of CP system and coating quality, basically.

￭ Direct (excavation) inspection of points having a high probability of corrosion

￭ Provision of root cause for corrosion


 
 

ECDA