0
Nuclear Reactors
Nuclear reactors are devices that maintain nuclear reactions. They are used in creating power and elements.
890 Questions
The first nuclear reactor of India?
No, most of India's reactors are PHWR (Candu type) reactors. There were two GE BWR's before this. Russia is supplying a new station based on PWR reactors, and a fast reactor is also under construction. No Chernobyl type reactors exist or are planned (RBMK type).
Do nuclear power be can recycle?
To some degree the fuel can be recycled, the process is called reprocessing.
The easiest form of reprocessing is to chemically separate the plutonium that the reactor produced during its operation. This plutonium is then mixed with fresh enriched uranium to produce mixed oxide fuel (MOX) for use in reactors, cutting down the demand for expensive enrichment. This still leaves the spent uranium and fission products and all the transuranic (other than plutonium) in the radioactive waste, as well as producing significant amounts of liquid chemical wastes containing radioactive contaminates. France is the only country that uses this process to any degree at this time.
A better form of reprocessing uses an electroplating process to separate uranium and all the transuranic (not just plutonium) that the reactor produced during its operation. This only leaves the fission products in the radioactive waste. No country currently uses this process, but the US tested it while they were developing the integral fast breeder reactor (which got canceled before a complete prototype could be built).
Probable you think to a breeder reactor; this type of nuclear reactor produce more fissile material than it consumes.
Can Ukraine start making nuclear weapons?
Although they have the nuclear material that could be deviated for nuclear weapon production but Ukraine has neither the motivation nor the political/economical will to make nuclear weapons.
How many nuclear power reactors are under construction worldwide?
there are 72 nuclear power reactors under construction (of total power 68374 MW electric) worldwide per the statistics of the International Atomic Energy Agency (IAEA) as of April 2004.
What are some advantages of a nuclear fission reactor?
1. releases large amounts of energy from small amounts of mass
2. very efficient
3. convert nuclear energy into thermal energy
4. the fuel lasts a long time
In a pressurized water reactor the primary cooling water is?
In a pressurized water reactor, the primary cooling water is kept under high pressure to prevent it from boiling at normal operating temperatures. This pressurized water flows through the reactor core to transfer heat from the nuclear fuel to a secondary system, where the heat is used to generate steam for electricity production.
How electricity is produced in a nuclear reactor?
In a nuclear reactor, electricity is produced through a process called nuclear fission. This process involves splitting uranium atoms, which releases a large amount of energy in the form of heat. The heat is then used to generate steam, which drives turbines connected to generators that produce electricity.
What is a dangerous conditions caused by overheating inside of reactor called?
A dangerous condition caused by overheating inside a reactor is known as a meltdown. This occurs when the core of the reactor becomes so hot that it melts, potentially leading to a breach of containment and release of radioactive material.
How many nuclear power plants in the wolrd?
As of end of August 2013, there are 434 working nuclear power reactors (with total rated power 370.543 Gigawatt plus 69 nuclear power reactors under construction (with total rated power 67.196 Giagawatt).
What are the health hazards of the nuclear reactor?
A nuclear reactor emits radiation. In a PWR reactor, if the reactor temprature is around 650 Degrees, The emission near the reactor core is 2.57 Roentgen. That is the amount of radiation a human is exposed to in around 20 Years.
There is also the dust, This dust if inhaled will cause cancer. If a Nuclear Powerplant explodes the story is different.
Lets take chernobyl NPP for instance.
The vincinity of the reacter core after explosion was 30,000 Roentgens per hour. That is 300 Sieverts per hour. That is enough to kill a man in 20 seconds. The fuel fragments that were realeased outward from the explosion the reactor had 15,000-20,000 Roentgens Pewr hour, And these fragments were laying on the ground after the explosion. Enough to kill a man in 30 seconds.
Why do nuclear power plants have three independent water systems?
This is mainly to protect against any possibility of nuclear radioactive material pollution. For example in pressurized water reactor types, the three water systems are:
- Primary coolant closed system that extracts heat from the nuclear fuel that is undergoing nuclear fission,
- Secondary coolant closed system that gets heat from the primary coolant system and get converted into steam that goes to spin the turbines and get condensed again in the condenser and returns back again, and
- Ultimate heat sink system that gets water from a river, sea, or ocean to cool and condense the steam passing through the condenser.
How do the three types of power plants make electricity?
Nuclear, coal-fired, and hydroelectric power plants provide electricity.
Why is a nuclear reactor enclosed in concrete?
For shielding against radiation and to provide more safety barrier against any unexpected emergency conditions.
How do nuclear reactors negatively affect the ecosystems?
Unless they explode, The only negative effects is waste which is taken and buried at secure locations. And the waste generates is 79% Lower than the waste generated by coal powerplants.
What are the functions of a nuclear reactor components?
Mainly:
- Nuclear fuel: where nuclear fission and energy is produced
- Reactor coolant: to extract heat from fuel
- Reactor neutron moderator: to reduce neutron energy to thermal range (0.025 ev)
- Reactor control elements: to control nuclear reaction rate, compensate for fuel burnup, and for shutdown and safety conditions
- Reflector: to reduce neutron leakage
Which isotope used as a nuclear fuel?
Uranium-235 is the most commonly used isotope as a nuclear fuel in power plants. It undergoes fission reactions, releasing energy that is used 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.
