Concentration Test > Functional Tests > operation of the discharge valve or pneumatic/ electrical discharge devices should be verified.
Annually. a functional test of the control/protection circuits should be performed.Electrical discharge devices should be verified. > Alarms and Beacons function test > Signage. To advise personnel of the risk of CD2 systems in the vicinity. appropriate warning signs must be affixed in conspicuous locations > Changing and Filling. Cylinder outlets should be fitted with safety covers or antirecoil devices. whenever the cylinderis not connected to the system piping.
(or spares) without discharging may be permitted to be retained in service for a maximum of 12 years from the date of the last hydrostatic test. At the end of 12 years. they must be discharged and retested befare being returned to service
The vapor phase shall not be less than 88.5 percent carbon dioxide > Weighing. High-pressure CD2 cylindersmust be weighed
semiannually to verify that the proper volume of gas is available. Containers showing a loss in net content of more than ID percent must be refilled or replaced > Testing. High-pressure CD2 cylinders must not be recharged without a hydrostatic test (and remarking) if more than 5 years have elapsed from the date of the last test. Cylinders continuously in service.
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