Can I use confirmatory direct assessment (CDA) for stress corrosion cracking?
No. The rule specifies that CDA can only be used for external and internal corrosion (192.931(a)). • FAQ-133. Must I do a full assessment every 7 years if my pipeline is subject to threats other than external and internal corrosion. [09/27/2006]Answer: No. Intervals for full assessments must be established per the requirements in 192.939. Maximum reassessment intervals vary with pipeline stress level as presented in the table in that section, but shorter intervals may be required if indicated by the operator s risk analysis. If an interval of longer than seven years is established, then some assessment must be performed no less frequently than every seven years. Confirmatory direct assessment, alone, is sufficient to fulfill this requirement.
Related Questions
- When using Stress Corrosion Cracking Direct Assessment (SCCDA), must I consider conditions on portions of my pipeline not in high consequence areas?
- What kind of data must I collect and evaluate to use stress corrosion cracking direct assessment (SCCDA)?
- Can I use confirmatory direct assessment (CDA) for stress corrosion cracking?
