There is an uninterrupted powersupply. All vital systems run on a converter that is fed by batteries. In normal situations the batteries are charged by public power. When that fails, the generator could take over the batterycharging for a period of 2 weeks.
Water is crusial for the personnel, but also for cooling purposes. The bunker has its own waterwell and these storagetanks.
There are a lot of pumps, pipes and valves.
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