Checklists by equipment
2 lists · 10 items · 14 photosWater mist suppression system maintenance checklists
Water mist suppression system maintenance checklists for the quarterly and annual rounds: 2 free lists, 10 items and 14 photo requirements, each item naming what to look for and the photo that proves it.
The water mist suppression system rounds
Water mist suppression system QuarterlyWater mist suppression system quarterly maintenance checklistSupply pressure, cylinder or pump readiness, section valves, nozzles and detection observed on the mist system without discharging it5 items7 photosWater mist suppression system AnnualWater mist suppression system annual maintenance checklistAnnual functional and discharge test run and certified by the licensed technician; the site observes the discharge and records the results5 items7 photos
Where each walk sits in the schedule
- Water mist suppression system quarterly maintenance checklistquarterly
- Every quarter, and closely around any work near the protected hazard, since a mist system depends on a clean supply pressure and unobstructed nozzles that both drift out of readiness quietly. Run by: The building engineer or the system's service tech reading the supply, the pump or cylinder set, the section valves and the nozzles on the quarterly round, recording conditions rather than discharging.
- Water mist suppression system annual maintenance checklistannual
- Once a year, coordinated with the technician and the monitoring station placed on test, timed so the system can be discharged or functionally tested, cleaned, recharged and returned to service the same day. Run by: The licensed technician performs and certifies the functional and discharge test to the manufacturer's procedure; the building team observe the discharge, record the readings and reset conditions, and never certify the result themselves.
What most often fails on a water mist suppression system
- Cylinder or accumulator pressure never read against the fill mark, so a slowly bleeding supply isn't caught until the system is called and comes up short.
- Fine mist nozzles found painted, greased or blocked, so the droplet pattern the system relies on collapses at exactly the nozzles over the hazard.
- A section valve left closed after other work, so part of the protected area has no supply and nobody knows until discharge.
- Functional test run from the panel but the actual mist pattern at the nozzles never observed, so a fouled nozzle over the hazard passes unnoticed.
- Discharge times and supply pressures taken but never compared against prior years, so a weakening pump or a leaking accumulator trends invisibly.
- Technician's certified report filed but nothing dated on the building side, so the site can't show the AHJ when the system was last tested.
Common questions
- Which water mist suppression system maintenance rounds do these checklists cover?
- Water mist suppression system quarterly maintenance checklist (quarterly): Every quarter, and closely around any work near the protected hazard, since a mist system depends on a clean supply pressure and unobstructed nozzles that both drift out of readiness quietly. Water mist suppression system annual maintenance checklist (annual): Once a year, coordinated with the technician and the monitoring station placed on test, timed so the system can be discharged or functionally tested, cleaned, recharged and returned to service the same day.
- Who runs the water mist suppression system maintenance round?
- The building engineer or the system's service tech reading the supply, the pump or cylinder set, the section valves and the nozzles on the quarterly round, recording conditions rather than discharging. The licensed technician performs and certifies the functional and discharge test to the manufacturer's procedure; the building team observe the discharge, record the readings and reset conditions, and never certify the result themselves.
- What most often fails on a water mist suppression system?
- Cylinder or accumulator pressure never read against the fill mark, so a slowly bleeding supply isn't caught until the system is called and comes up short. Fine mist nozzles found painted, greased or blocked, so the droplet pattern the system relies on collapses at exactly the nozzles over the hazard. A section valve left closed after other work, so part of the protected area has no supply and nobody knows until discharge. Functional test run from the panel but the actual mist pattern at the nozzles never observed, so a fouled nozzle over the hazard passes unnoticed.
- Can I run these checklists in RTI?
- Yes. Start a free RTI workspace and load any of the 2 lists (10 items in total). The Photo Gate holds the submit button until every mandatory item is answered and its photos are attached, and approved inspections roll into a branded turnover package with a tamper-evident audit trail.