Approvals and fire NOC considerations for cold rooms

Why cold rooms raise fire questions

Most cold room panels use a foam core — polyurethane (PUF) or polyisocyanurate (PIR) — between steel sheets. The foam insulates well but is combustible, and in a fire it can burn and produce dense smoke. Fires in buildings with large areas of insulated panels have spread inside the panel cores, which makes them hard to fight.

Cold rooms also have electrical equipment running all the time: compressors, fans, defrost heaters, door frame heaters and lighting. Electrical faults are a common starting point for fires in cold stores, especially where heaters or wiring are poorly installed.

The framework in India

The National Building Code of India 2016, Part 4 (Fire and Life Safety), classifies buildings by occupancy and sets fire protection requirements; storage buildings such as warehouses and cold stores fall under the storage occupancy group. BIS also publishes IS 3594, a code of practice for fire safety of general storage and warehousing including cold storage. States adopt and apply these through their own fire service rules and building bye-laws.

A fire No Objection Certificate (NOC) is issued by the state fire service or the authority it designates. Whether a cold room needs its own NOC, or is covered by the building's existing NOC with modifications, depends on the size, height and use of the building, and on state rules.

Typical situations

• A small walk-in inside an existing restaurant or hotel kitchen: usually treated as part of the building; check whether the change affects the building's fire NOC, sprinkler coverage or exits.
• A cold room in a mall or commercial complex: the building owner or facility manager usually has rules, and may require their fire consultant to approve the panels, electrical work and penetrations.
• A standalone cold storage building or large cold store: likely to need its own approvals as a storage occupancy, planned with an architect and fire consultant from the start.

Design choices that affect fire safety

• Panel core: ask about fire performance of the panels and whether fire-rated or PIR panels are required or advisable for your building.
• Separation: where the cold room sits relative to exits, kitchens and other occupancies, and whether fire separation is required.
• Electrical: proper cable routing, protection, and heater circuits installed by a licensed electrician; no cables run inside panel joints without protection.
• Penetrations: pipes and cables through panels and walls sealed so fire and smoke cannot pass.
• Detection and suppression: whether the building's detection and sprinkler system must extend into or around the cold room.
• Exit safety: an inside door release so nobody can be trapped, and clear escape routes outside the room.

A sensible process

Raise the cold room early, before the layout is final. Share the proposed size, location, panel specification and electrical load with your architect or fire consultant and, in a managed building, with facility management. Ask whether the plan triggers a new or revised fire approval. Keep copies of panel specifications and fire test documents supplied by the cold room contractor; inspectors often ask for them.

Allow time. Approvals, inspections and any changes they require can take longer than the cold room installation itself.

Fire safety in day-to-day operation

• Keep combustible packaging, cartons and stock away from the condensing unit and heaters.
• Keep the area around the cold room door and panels clear; do not store against the panels.
• Report any damage to panels, exposed foam or scorched cables promptly.
• Include the cold room in fire drills and in the building's maintenance of detection systems.