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- tanks; and
- trunks.
5.4 Subsequent modifications to the protected space that alter the net volume of the space shall require the quantity of extinguishing agent to be adjusted to meet the requirements of this paragraph and paragraph 6.
6 No fire suppression agent should be used which is carcinogenic, mutagenic, or teratogenic at concentrations expected during use. No agent should be used in concentrations greater than the cardiac sensitization NOAEL (No Observed Adverse Effect Level), without the use 'of controls as provided in SOLAS regulations II-2/5.2.5.1 and 5.2.5.2. In no case should an agent be used above its LOAEL (Lowest Observed Adverse Effects Level) nor ALC (Approximate Lethal Concentration) calculated on the net volume of the protected space at the maximum expected ambient temperature.
7 The system and its components should be suitably designed to withstand ambient temperature changes, vibration, humidity, shock, impact clogging, and corrosion normally encountered in machinery spaces or cargo pump-rooms in ships.
8 The system and its components should be designed and installed in accordance with international standards acceptable to the Organization1 aud manufactured and tested to the satisfaction of the Administration. As a minimum, the design and installation standards should cover the following elements:
.1 safety:
- toxicity;
- noise, nozzle discharge; and
- decomposition products;
.2 storage container design and arrangement:
- strength requirements;
- maximum/minimum fill density, operating temperature range;
- pressure and weight indication;
- pressure relief; and
- agent identification and lethal requirements;
.3 agent supply, quantity, quality standards;
.4 pipe and fittings:
- strength, material, properties, fire resistance; and
- cleaning requirements;
1Until international standards are developed, national standards acceptable to the Administration should be used. Available national standards include, e.g., Standards of Australia, the United Kingdom and NFPA 2001.
