IMPROVEMENTS IN OR RELATING TO CONTROL SYSTEMS FOR NUCLEAR POWER PLANTS
Patent
·
OSTI ID:4224602
A control scheme is presented for nuclear power plants in which steam generated in a secondary circuit drives a turbine. When power demand falls, steam pressure rises activating switches to reduce primary coolant flow imposing a temperature difference between reactor inlet and outlet. As a result of the negative temperature coefficient of the reactor, the multiplication constant decreases and thermal power drops. The power decrease causes the temperature difference to decrease reducing the negative temperature coefficient effect and, consequently, reducing the rate of change of power, The control rods operate to maintain constant outlet temperature, and the system continues in this state until the initial pressure conditions at the heat exchanger or initial temperature conditions at the reactor outlet are restored. (T.R.H.)
- Research Organization:
- Originating Research Org. not identified
- NSA Number:
- NSA-14-004110
- OSTI ID:
- 4224602
- Report Number(s):
- GB 823429
- Country of Publication:
- United Kingdom
- Language:
- English
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