Sch 1Fixed froth fire-extinguishing system

Schedule 1 Fixed froth fire-extinguishing system

(regulations 20 (1) and 33 (1))

1. A froth fire-extinguishing installation of the gravity type shall be provided with:

(a) containers for the froth-forming solution so placed that a fire in the space to be protected will not interfere with the effective working of the installation;

(b) outlet valves for the containers so arranged that the solution will be released from the containers simultaneously and in proper proportions by the operation of a control wheel or control handle so placed as not to be rendered inaccessible by a fire in the space to be protected; and

(c) means for agitating and sampling the froth-forming solution and for testing the expansion rate of the solution.

2. In a froth fire-extinguishing installation of the continuous-generator type, the froth-forming apparatus, pumps and source of power for the pumps, together with all controlling devices and other accessories necessary for the efficient operation of the installation, shall be so arranged that a fire in the space to be protected will not prevent the efficient working of the installation.

3. (1) A froth fire-extinguishing installation of the gravity or continuous-generator type shall be provided with a system of distribution pipes so arranged as to enable the froth to be effectively distributed.

(2) Provision shall be made to prevent the obstruction of the pipes or their outlets by water or otherwise and to enable the efficiency of the pipes to be readily tested.

(3) The pipes shall not be led through any refrigerated space unless they are insulated and provision is made for draining them.

4. A froth fire-extinguishing installation shall be capable of discharging within a period of 5 minutes a quantity of froth sufficient to cover to a depth of 150 millimetres the largest single area over which oil fuel may be spread in the event of leakage.

5. Operating instructions in clear and permanent lettering shall be affixed adjacent to the controls of a froth fire-extinguishing installation.