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.5 valves:
- testing requirements;
- corrosion resistance; and
- elastomer compatibility;
.6 nozzles:
- height and area testing requirements; and
- corrosion and elevated temperature resistance;
.7 actuation and control systems:
- testing requirements; and
- backup power requirements;
.8 alarms and indicators:
- predischarge alarm, agent discharge alarms as time delays;
- abort switches;
- supervisory circuit requirements; and
- warning signs and audible and visual alarms should be located outside each entry to the relevant space as appropriate;
.9 agent flow calculation:
- approval and testing of design calculation method; and
- fitting losses and/or equivalent length;
.10 enclosure integrity and leakage requirements
- enclosure leakage;
- openings; and
- mechanical ventilation interlocks;
.11 design concentration requirements, total flooding quantity;
.12 discharge time; and
.13 inspection, maintenance, and testing requirements.
9 The nozzle type, maximum nozzle spacing maximum height and minimum nozzle pressure should be within limits tested to provide fire extinction per the proposed test method.
10 Provisions should be made to ensure that escape routes which are exposed to leakage from the protected space are not rendered hazardous during or after discharge of the agent. Control stations and other locations that require manning during a fire situation should have provisions to keep HF and HCl below 5 ppm at that location. The concentrations of other products should be kept below concentrations considered hazardous for the required duration of exposure.
