Fire Sprinkler Requirements

The following information summarises the key requirements for domestic and residential fire sprinklers:

Hazard Category

System

Category 1 (Typically a domestic dwelling for a single family)

Category 2 (Typically a block of flats over 18m)

Category 3 (Typically a residential care home)

Town Mains Fed

 A 32/50mm water main*

A 50/63mm water main*

A 63mm water main*

Minimum water flow rate of 60 litres per minute.

Minimum water flow rate of 130 litres per minute.

Minimum water flow rate of 240 litres per minute.

3 bar (guide)*

4.5 bar (guide)*

6 bar (guide)*

3A unswitched spur (for alarm panel)

3A unswitched spur (for alarm panel)

3A unswitched spur (for alarm panel)

Access to run pipe-work

Access to run pipe-work

Access to run pipe-work

Pump and Tank Fed

Effective stored water capacity between 1m3 and 1.5m3*

Effective stored water capacity between 3m3 and 4.5m3*

Effective stored water capacity between 6m3 and 9m3*

Room for a self-testing pump

Room for a self-testing pump

Room for a self-testing pump

A proven infill to water tank (if provided there is a possibility that the tank size could be reduced)

A proven infill to water tank (if provided there is a possibility that the tank size could be reduced)

A proven infill to water tank (if provided there is a possibility that the tank size could be reduced)

Single phase 230v electrical supply for self-testing pump (via type C MCB)

Three-phase 400v electrical supply for a self testing pump (via type C MCB)

Three-phase 400v electrical supply for a self testing pump (via type C MCB)

3A unswitched spur

3A unswitched spur

3A unswitched spur

Access to run pipe-work

Access to run pipe-work

Access to run pipe-work

* Subject to full hydraulic calculations

Further information on building regulations and fact sheets relating to domestic and residential fire sprinkler requirements and safety standards can found on this page.

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