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API-581 절차에 의한 정량적 위험기반검사에서 부식성 균열에 의한 응력부식의 사고발생 가능성 해석 KCI 등재
Analysis of Likelihood of Failure for the Stress Corrosion Cracking by Caustic Cracking through the Quantitative Risk Based-Inspection using API-581 BRD
pp.65-76
The likelihood of failure for the stress corrosion cracking (SCC) of caustic cracking, which affect to a risk of facilities, was analyzed through the risk based-inspection using API-581 BRD. We found that SCC of the caustic cracking was occurred above 5 % NaOH concentration, and the technical module subfactor (TMSF) was maximized for above 50 % concentration. The heat traced and monitoring were not sensitive to the TMSF with NaOH concentration and temperature. But the steam out was more of less affect minimum value of the TMSF. Also, the inspection number, the inspection effectiveness, and the year since inspection were very sensitive to the TMSF with NaOH concentration and temperature. Therefore, the plan of next inspection will be established with compositively considering those at once.
