{"id":"5820aa84-6ad3-4363-a94d-74c8332f25f0","task":"Determine medical gas pipe labeling and identification requirements","domain":"nfpa.org","steps":["Confirm NFPA 99 requires medical gas/vacuum piping to be labeled by stenciling or adhesive markers, specifying the gas/vacuum system name (or chemical symbol), and the placement/format requirements, while the specific background/text color combinations are defined by CGA C-9 (Standard for Medical Gas Markers, referenced as NFPA 99C/CGA C-9)","Confirm commonly-used CGA C-9 color combinations for common gases (e.g., oxygen, nitrous oxide, medical air, carbon dioxide) against the current CGA C-9 publication rather than relying solely on secondary vendor pages, since exact color pairs should be verified at the source","Confirm labeling placement rules: at intervals not exceeding a specified distance along runs (commonly cited as 20 ft), at least once in or above every room served, on both sides of walls/partitions penetrated by the piping, and at least once per story height on risers","Confirm minimum lettering height requirements (commonly cited as 1/4 inch) and that labels must include operating pressure where a system operates at other than the standard/default gauge pressure for that gas","Verify all specific figures (intervals, lettering height, color pairs) against the current NFPA 99 edition and current CGA C-9 publication before finalizing labeling specifications"],"gotchas":["NFPA 99 sets placement/format rules but delegates actual color specification to CGA C-9 — citing a color without referencing CGA C-9 as the source standard is incomplete","Cited interval and lettering-height figures should be confirmed against current editions rather than assumed universal, since older vendor pages may reference superseded editions"],"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/5820aa84-6ad3-4363-a94d-74c8332f25f0"}