Acceptance Testing, Inspection, Testing, and Maintenance
This domain tests the acceptance tests that prove a new system works and the recurring routines that keep it working.
Acceptance tests
Hydrostatic test, main drain flow test, alarm and waterflow device test, dry pipe or preaction trip test, fire pump flow test, and a walkthrough confirming valve positions, signage, and spare sprinkler stock. Results go on the contractor's material and test certificate.
Recurring routines
- Gauges read monthly on wet, dry, and preaction systems; gauges replaced on a five-year cycle.
- Control valves checked monthly for open position and supervision.
- Alarm and waterflow devices tested quarterly.
- Main drain flow test annually, compared against the original baseline.
- Dry pipe valves trip tested annually, with internal inspection on a longer cycle.
- Fire pump run weekly without flow and flow tested annually.
- Standpipe systems hydrostatically tested on a five-year cycle.
Worked example
A main drain test reads 68 psi static and 52 psi residual, against a baseline of 70 and 60. The residual drop from baseline signals a partial obstruction or a closed valve upstream. The correct response is investigation, not a note that the drain still flows.
Impairments
When a system is out of service, tag the valve, notify the AHJ and building owner, and establish a fire watch where required. Restoration is not complete until the system is back in service and the parties are notified.
Traps
- Treating a main drain test as pass or fail without comparing to the baseline.
- Skipping the trip test on a dry system because the valve looked fine.
- Confusing monthly gauge readings with the five-year gauge replacement.
- Leaving an impairment untagged or unnotified.