Commercial kitchens are one of the highest fire-risk environments in any building. The wet-chemical suppression system built into your exhaust hood is what stands between a flare-up and a catastrophe — but only if it's inspected and maintained on schedule.
The standards that apply
Three references govern kitchen hood suppression:
- UL 300 — the performance standard modern wet-chemical systems must meet.
- NFPA 96 — the standard for ventilation control and fire protection of commercial cooking operations.
- NFPA 17A — the standard for wet-chemical extinguishing systems.
How often does it need inspection?
Commercial kitchen suppression systems must be inspected and tested every six months. This semi-annual requirement is not optional — it's written into code and enforced by your local fire marshal, and your insurance almost certainly requires it too.
What's checked during an inspection
- Nozzles are correctly positioned and unobstructed, with caps intact.
- Fusible links are replaced (typically at each semi-annual service).
- The suppression cylinder's charge and pressure are verified.
- The manual pull station and automatic detection are tested.
- Gas and electric shut-offs interlock correctly on activation.
- The system is tagged and documented for your AHJ and insurer.
What does it cost?
Cost depends on the number of nozzles and appliances, the size and complexity of your hood, and whether cylinders need hydrostatic testing or recharging that visit. A single-hood restaurant is modest; a multi-hood commercial kitchen is more. The far bigger cost is a failed inspection that closes your kitchen — or an uncovered fire.
Bottom line
Put your six-month inspections on a schedule and keep the tags current. It keeps your doors open, your insurance valid, and your staff safe.
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