heat removal वाक्य
उदाहरण वाक्य
मोबाइल
- These include : Core heat removal through natural circulation; direct injection of emergency core coolant system ( ECCS ) water in fuel; and the availability of a large inventory of borated water in overhead gravity-driven water pool ( GDWP ) to facilitate sustenance of core decay heat removal.
- These include : Core heat removal through natural circulation; direct injection of emergency core coolant system ( ECCS ) water in fuel; and the availability of a large inventory of borated water in overhead gravity-driven water pool ( GDWP ) to facilitate sustenance of core decay heat removal.
- Though this type of reactor is not susceptible to meltdown, additional capabilities of heat removal are provided by using regular atmospheric airflow as a means of backup heat removal, by having it pass through a heat exchanger and rising into the atmosphere due to convection, achieving full residual heat removal.
- Though this type of reactor is not susceptible to meltdown, additional capabilities of heat removal are provided by using regular atmospheric airflow as a means of backup heat removal, by having it pass through a heat exchanger and rising into the atmosphere due to convection, achieving full residual heat removal.
- Though this type of reactor is not susceptible to meltdown, additional capabilities of heat removal are provided by using regular atmospheric airflow as a means of backup heat removal, by having it pass through a heat exchanger and rising into the atmosphere due to convection, achieving full residual heat removal.
- The General Atomics NGNP programs, with experimental facilities at Argonne National Laboratory ( home to the Natural convection Shutdown heat removal Test Facility, a 1 / 2 scale air-cooled RCCS ) and the University of Wisconsin ( home to separate 1 / 4 scale air and water-cooled RCCS ),.
- EBR-II had a negative thermal coefficient of reactivity that shut down the reactor when the temperature increased due to loss of the coolant pumps; the time required to heat the large pool of sodium surrounding the reactor provided a sufficient time buffer for the passive decay heat removal system to prevent the EBR-II reactor from melting down.
- The ultimate heat sink was restored when the service seawater system pumps in the pump room were repaired in units 1, 2 and 4 starting March 13 restoring the normal ECCS and heat removal systems to operable status and cooling was switched to the Residual Heat Removal System ( RHR ) portion of the ECCS . The RHR systems were first activated to cool down the suppression pools ( torus ) and drywells to operable status, and water injections were made to the reactors using the Low Pressure Coolant Injection ( LPCI ) mode as needed.
- The ultimate heat sink was restored when the service seawater system pumps in the pump room were repaired in units 1, 2 and 4 starting March 13 restoring the normal ECCS and heat removal systems to operable status and cooling was switched to the Residual Heat Removal System ( RHR ) portion of the ECCS . The RHR systems were first activated to cool down the suppression pools ( torus ) and drywells to operable status, and water injections were made to the reactors using the Low Pressure Coolant Injection ( LPCI ) mode as needed.
- This coolant has several extremely beneficial properties for a reactor : it is opaque to gamma radiation, but transparent to neutron flux; it melts easily at a low temperature, but does not boil until an extremely high temperature is reached; it does not greatly expand or contract when exposed to heat or cold; it has a high heat capacity; it will naturally circulate through the reactor core without pumps being required-whether during normal operation or as a means of residual decay heat removal; and it will solidify once decay heat from a used reactor has dropped to a low level.
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