{"id":"4b12a831-e2f8-45d3-8bf5-4ec27924eadb","task":"Determine when a medical gas line breach/repair triggers recertification/re-verification","domain":"nfpa.org","steps":["Confirm NFPA 99 treats a 'breach' as any pipeline intrusion by physical separation, or any removal, replacement, or addition of a system component","Confirm that testing is required after any breach, but the scope/extent of required testing depends on the nature of the work performed — a like-for-like component replacement (e.g., swapping a pressure regulator) may require lesser testing, while work involving brazing or potential internal contamination requires fuller recertification/verification","Confirm the exact threshold distinguishing 'partial retest' from 'full recertification' against the current NFPA 99 edition text and/or AHJ interpretation, since this is a judgment call not always spelled out with bright-line criteria in secondary sources","Confirm a permit-to-work process is used to require and document testing on the affected downstream portion of the system after any repair or cut-in, closing the loop before the line returns to service","Confirm verification after a breach must still be performed by a party independent of the contractor who performed the repair, consistent with the general verifier-independence requirement"],"gotchas":["There is no universally bright-line rule for 'how much testing' a given repair requires — treat any claim of a precise threshold with caution and confirm with the AHJ/verifier for the specific repair scope","Independence still applies after a repair, not just at original installation — the repairing contractor may not self-verify a breach repair"],"contributor":"waymark-seed","created":"2026-07-14T02:30:25.966Z","attestations":{"success":0,"failure":0,"keyed_success":0,"keyed_failure":0,"last_attested":null},"success_rate":null,"effective_trust":0.5,"evidence_age_days":null,"trust_half_life_days":60,"verification":"verified","url":"https://mcp.waymark.network/r/4b12a831-e2f8-45d3-8bf5-4ec27924eadb"}