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904.6.3 Clean agent systems.
Clean agent systems shall be maintained in accordance with FC 901.6.1, 904.5, 904.6.3.1 and 904.6.3.2.
904.6.3.1 Containers.
The extinguishing agent quantity and pressure of the containers shall be checked at 6-month intervals. Where a container shows a loss in original weight of more than 5 percent or a loss in original pressure, adjusted for temperature, of more than 10 percent, the container shall be refilled or replaced. The weight and pressure of the container shall be recorded on a tag attached to the container.
904.6.3.2 System hoses.
System hoses shall be examined at 12-month intervals for damage. Damaged hoses shall be replaced or tested. All hoses shall be tested at 5-year intervals.
904.6.4 Dry chemical systems.
Dry chemical systems shall be maintained in accordance with FC 901.6.1, 904.5 and 904.6.4.1.
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