floors. This storage space will take bulk deliveries of
consumables, store them, and prepare them for use.
Extinguishers should be passed between staging and bulk storage,
refilled, and returned for use. There should be at least enough
extinguisher bottles for three classes.
The bulk storage room should include an
extinguisher fill station capable of replenishing CO2, PKP, and
AFFF extinguisher bottles. A truck platform should be provided
for receiving bulk materials. The configuration should suit the
type of packaging expected for the consumables for a given site.
Refer to Section 4 for characteristics of CO2, PKP, AFFF, and
188.8.131.52 AFFF Fill Station. The foam fill station for the
21C12 and 21C12A structures should consist of a mixing tank,
measuring tank, pump, water supply, spill containment, and
drain. Foam concentrate should be delivered in 200 L gal drums.
A single .631 L/s low head pump should be piped to pump
concentrate from the drum to the .631 L/s measuring tank and
supply the extinguisher's fill hose. The concentrate should
then flow to the mixing tank by gravity. Water should be
supplied to the 1137 L mixing tank through an open sight funnel.
The mixing tank should have a closed top with a hinged cover,
liquid level sight glass, and drain located at the bottom of the
tank. A restricted bypass should ensure that there is flow
through the pump during extinguisher fill operations when the
trigger fill nozzle is closed. Mixing of the solution should be
a) Hoses 15 mm in diameter should be provided for
concentrate suction, solution discharge, and cold water
b) The fill station should be provided with 820 kPa
shop air to supply the propellant charge for the extinguishers.
This air should not be supplied from the EAB system compressor
but from a separate 820 kPa shop air compressor. Each AFFF
extinguisher takes 2 L of air at 689 kPa for a full charge. The