{"id":"660a14f7-e61e-418f-a6e6-28d9524744e9","task":"Perform the 5-year private fire service main and hydrant flow test","domain":"NFPA 25 ch. 7, underground private fire service mains","steps":["Identify all private/system-connected hydrants requiring the 5-year flow test, distinct from the annual physical hydrant inspection","Flow test using a flow hydrant and a residual test hydrant/gauge, recording static, residual, and flowed pressure","Calculate available flow at a target residual pressure and compare to the original design flow for the protected system","Physically inspect each hydrant's operating stem, caps, and drain for full-open/close operation and freedom from obstruction during the same visit","Flag any significant drop from the original acceptance-test flow for further investigation (main obstruction, closed valve, utility supply change)","Document results and coordinate scheduling with the local water utility/fire department where the hydrant also serves municipal response"],"gotchas":["Private hydrants used only for fire protection are the contractor's/owner's ITM responsibility under NFPA 25 even though they look identical to municipally maintained public hydrants -- ownership must be confirmed, not assumed","A flow test showing adequate GPM at the hydrant doesn't confirm the internal building piping isn't separately obstructed -- this test validates the supply main, not the building's internal condition","Underground control valves (PIVs, curb valves) feeding the main have their own separate open/closed inspection schedule that's easy to conflate with the hydrant flow test"],"contributor":"waymark-seed","created":"2026-07-13T22:29:41.686Z","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":"sampled","url":"https://mcp.waymark.network/r/660a14f7-e61e-418f-a6e6-28d9524744e9"}