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There is some sort of confusion here. There are two types of water moderated/cooled reactors: boiling water and pressurized water.

The boiling water reactor is at normal atmospheric pressure and the water in the reactor boils, producing steam directly.

The pressurized water reactor is at elevated pressure to prevent the water from boiling. A heat exchanger/steam generator is used to produce steam indirectly.

Other types of reactor (e.g. liquid metal, gas cooled, organic, aqueous homogeneous) also do not operate at pressures below atmospheric.

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Q: Why is it necessary to enclose the nuclear reactor at low pressure?
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Why is it necessary to enclose the nuclear reactor at low temperature?

To keep the environment inside the power plant cool.


Why it necessary to enclose the nuclear reactor at low pressure?

There is some sort of confusion here. There are two types of water moderated/cooled reactors: boiling water and pressurized water.The boiling water reactor is at normal atmospheric pressure and the water in the reactor boils, producing steam directly.The pressurized water reactor is at elevated pressure to prevent the water from boiling. A heat exchanger/steam generator is used to produce steam indirectly.Other types of reactor (e.g. liquid metal, gas cooled, organic, aqueous homogeneous) also do not operate at pressures below atmospheric.


What is the Japanese Nuclear Reactor?

A Nuclear Reactor.


What are the necessary components for a nuclear reactor?

for pressurized light water reactor type, as an example, the nuclear reactor components are * Reactor vessel (that contains the nuclear fuel and surrounded with water and contains control rod for power control and for safety) * reactor coolant pump * steam generator * reactor pressurizer * piping out of the vessel to the pressurizer, from pressurizer to steam generator, from steam generator to reactor coolant pump, and from pump back to the reactor vessel.


What is a part of a nuclear power plant that undergoes a fission reaction?

Nuclear fission takes place in the nuclear fuel rods that are placed in the reactor core that is situated in the reactor pressure vessel. The reactor pressure vessel is usually situated inside the reactor containment.


What is artificial nuclear reactor?

An artificial nuclear reactor is a nuclear reactor that is created by man to utilize a nuclear reaction for energy, as opposed to natural nuclear reactors.


What is nuclear reactor kinetics?

Nuclear reactor kinetics is the branch of reactor engineering and reactor physics and control that deals with long term time changes in reactor fuel and nuclear reactors.


Does South Africa has a nuclear reactor?

yes, south Africa has a nuclear reactor.


How does nuclear reactor works to produce electricity?

how electricity is produced in a nuclear reactor


What is the difference between nuclear reactor and nuclearpower plant?

a nuclear reactor converts binding energy into heat. a nuclear power plant uses a nuclear reactor to generate electricity.


What is the function of a nuclear reactor of a nuclear plant?

simply, the nuclear reactor is the source of heat (or steam) for the nuclear power plant.


What is a Nuclear reactor moisture separator?

This is used in the nuclear reactor that is known as Boiling Water Reactor (BWR) in which heat produced by the nuclear fission in the nuclear fuel allows the light water reactor coolant to boil. Then, the nuclear reactor moisture separator is used to increase the dryness of the produced steam before it goes to the reactor steam turbines.