Final answer:
Each boiler in a multiple boiler plant typically has its own independent feed water pump and control system, allowing for individual management of water levels. In nuclear plants, the steam generation system, including the condenser and steam generator, is kept separate from the radioactive reactor water to ensure safety.
Step-by-step explanation:
In multiple boiler heating plants where control of water level in each boiler is independent from the other boilers, the typical arrangement for the supply of feed water is such that each boiler has its own feed water pump and control system. This setup allows each boiler to independently regulate its water level, ensuring that there is no interaction between the water levels of different boilers. The management of feed water is critical, as the boilers may have different demands based on their operational status or the heat load they are catering to. Water level control is typically automated, with sensors and control mechanisms adjusting the flow of water into the boiler to maintain the required water level.
Due to the importance of keeping systems separate, especially in plants involving nuclear technology, the water in the steam generation system, which includes the condenser and steam generator, remains nonradioactive and outside of the reactor's containment structure. This separation ensures that the reactor water, which is radioactive, never mixes with the feed water or condenser cooling water, maintaining safety and integrity of the plant. Power plants typically employ additional safety features for the reactor such as control rods and auxiliary cooling systems in case of emergencies like a loss of coolant accident.