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문장이 길어지니 해석이 너무 어려워요 도와 주세요~

5.1

identifying and evaluating potential degradation mechanisms are important steps in an assessment of the likelihood of a piping failure. however, adjustments to inspection strategy
and tactics to account for consequences of a failure should also be considered.
combining the assessment of likelihood of failure and the consequence of failure are essential
elements of risk-based inspection(rbi).
when the owner/user chooses to conduct a rbi assessment it must include a systematic evaluation of both the likelihood of failure and the associated consequence of failure.
the likelihood assessment must be based on all forms of degradation that could reasonably be expected to affect piping circuits in any particular service.
examples of those degradation mechanisms include: internal or external metal loss from an identified form of corrosion(localized or general), all forms of cracking including hydrogen assisted and stress corrosion cracking(from the inside or outside surfaces of piping), and any other forms of metallurgical, corrosion, or mechanical degradation,, such as fatigue, embrittlement, creep, etc.
additionally, the effectiveness of the inspection practices, tools, and techniques utilized for finding the expected and potential degradation mechanisms must be evaluated.
this likelihood of failure assessment should be repeated each time equipment or process changes are made that could significantly affect t degradation rates or cause premature failure of the piping.
other factors that should be considered in a rbi assessment include: appropriateness of the materials of construction; piping circuit design conditions, relative to operating conditions; appropriateness of the design codes and standards utilized; effectiveness of corrosion monitoring programs; and the quality of maintenance and inspection quality assurance/quality control programs.
equipment failure data and information will also be important information for this assessment.
the consequence assessment must consider the potential incidents that may occur as a result of
fluid release, including explosion, fire, toxic exposure, environmental impact, and other health
effects associated with a failure of piping.
it is essential that all rbi assessments be thoroughly documented, clearly defining all the factors
contributing to both the likelihood and consequence of a piping failure.

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2022-01-17 19:05:11
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