Gas transmission · Crack management · 49 CFR 192.712 + API 1176
Crack Management Plan Helper
Assembles the required plan elements, a tailored crack-detection inspection recommendation, the mitigation hierarchy, and the reassessment cue per 49 CFR 192.712 (Gas Transmission Final Rule) and API RP 1176.
⚠ Safety-critical — planning aid only. This assembles plan elements and a detection/mitigation outline from your inputs. It does not run the fracture-mechanics model, Paris-law growth, or remaining-life analysis — those need a validated model (CorLAS / API 579 / BS 7910) with SME review. Not for safety case submission, regulatory filing, or crack-management decisions without SME review.
Observed Crack Types
Context
psig
%
yr
Engineering Basis
§192.712: assess cracks with a technically-proven fracture-mechanics model appropriate to the failure mode (ductile/brittle/both).
Cyclic-susceptible defects: fatigue analysis via Paris' law (or equivalent).
Remaining life = time for the crack to grow to a size that fails at MAOP; reassess before 50% of remaining life.
Detection: EMAT/UT crack ILI for SCC; seam ILI + hydrostatic spike test for LF-ERW seam & selective seam corrosion.