Unavailable storage tanks

Fixed systems may be fixed nozzles or hand hose line systems. They usually range in capacity from 68 to 1,360 kgs (150 to 3,000 lbs.). Most use a high pressure nitrogen cylinder bank to fluidize and expel the dry chemical from a master storage tank. Where immediate water supplies are unavailable, fixed dry chemical systems may be a suitable alternative. 

Two auxiliary feed pumps (one of them is standby) located in the annex to reactor auxiliary building take suction from condensate storage tanks and supply feed water to the steam generators if the main feed water system is unavailable, say, on failure of class IV power supply. 

Unavailable safety features (e.g., the scrubber that should have absorbed the vapor was inoperative and the refrigeration system which could have provided cooling for the storage tank was switched off). 

An ammonia tank car must be consigned for delivery and unloaded on a private track. See 49 CFR 171.8 and 174.204(a) [9]. If a private track is unavailable, an ammonia tank car equipped with check valves may be consigned for delivery and unloaded on a carrier track provided it is unloaded into permanent storage of sufficient capacity to receive the entire contents of the car. See 49 CFR 174.204(a)(2) [9]. 

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