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new_age
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Does anyone know what type of pump is used in nuclear plant's pump house?
Is one referring to service water for providing water to all systems?new_age said:Does anyone know what type of pump is used in nuclear plant's pump house?
From volts and amps, one calculated the power (horsepower). Then one would need a pump characteristic (curve), which relates power to flow. Head and flow are related. The performance would depend on the design and rpm.new_age said:If pump's motor load is around 33 ampere and 48 volts, how do you calculate the maximum flow and the head? Note the it is a vertical centrifugal pump
I'm not sure what part of the ASME code would cover this. It's definitely not BPV. Perhaps one could find it referenced in an FSAR or DCD.new_age said:Do you know the design of this type of pump, goes under which section of ASME?
Design Control Document. It's more or less a preliminary FSAR (PSAR), which the NSSS suppliers submit to the NRC as part of the design certification process for a new nuclear power plant. Ref: 10 CFR 52, particularly 10 CFR 52.47.new_age said:What does DCD stand for?
Raw service water is mostly untreated in terms of mineral content, but it is cleaned (debris removed). Chlorine may be added in order to reduce biofouling, but that may be restricted depending on the site. The raw water is pump to the condensers (condenser cooling water, CCW) and used more or less as is. Some plants may have a cooling tower, so that the cooling tower uses the raw water which is separated from the CCW, and CCW is a closed loop receiving makeup from the plant service water system.new_age said:Pumphouse is the place for monitoring the lake water (adding chlorine, blocking debris etc) and this water is pumped into condenser. I the water that goes from the lake to pumphouse and then to condeser is called a "raw service water" and is different than "service water".
Service water is used for emergency purposes or for moderator heat exchanger.
678000 gpm per unit, 169500 gpm per pumpEach of the three (3) power generation units has four (4) condenser circulating water (CCW) pumps for a total of twelve (12) pumps. The operation of all 12 pumps for three-unit operation would result in a total flow of 2,034,000 gallons per minute or 2929 million gallons per day.
There are 4 pumps per unit (reactor).new_age said:678000 / 3 = 226,000 GPM per actual working pump. In order to calculate the pump head I need to have a performance curve that is in that range, but there is no source on the web. Do you know where I could find that?
Astronuc said:There are 4 pumps per unit (reactor).
The plant description mentioned 12 pumps and the capacity. It did not indicate that 1 of 4 were in standby. It's possible that they operate all 4 at reduced capacity, but three could serve the plant, or perhaps there is a 5th standby pump. I will try to find out.new_age said:It's true that there are 4 pumps. but 1 one of them is on stand-by mode. so each of those 3 left pumps provide 33% of the flow need.
I am still searching for such a curve, it doesn't exist :)
A nuclear plant pump is a mechanical device that is used to transport liquids, such as water or coolant, within a nuclear power plant. These pumps are essential for the proper functioning of a nuclear power plant, as they help to circulate the coolant that removes heat from the reactor core.
The most common type of pump used in nuclear power plants is the centrifugal pump. This type of pump uses centrifugal force to move the liquid through the pump, making it the ideal choice for high-flow, low-pressure applications, such as those found in nuclear power plants.
The main components of a nuclear plant pump include the impeller, which is responsible for moving the liquid, the casing, which houses the impeller and directs the flow of liquid, and the motor, which provides the power to operate the pump.
Yes, there are several design and safety measures that are specific to nuclear plant pumps. These include strict quality control and testing procedures to ensure the pumps can withstand the harsh conditions of a nuclear power plant, as well as redundant systems to prevent pump failure and potential accidents.
Nuclear plant pumps are specifically designed to meet the unique requirements of a nuclear power plant, such as high flow rates and high temperatures. They also undergo rigorous testing and must meet strict safety standards to ensure their reliability and safety in a nuclear plant setting.