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Shutdown is the state of a nuclear reactor when the fission reaction is slowed significantly or halted completely. Different nuclear reactor designs have different definitions for what "shutdown" means, but it typically means that the reactor is not producing a measurable amount of electricity or heat and is in a stable condition with very low reactivity.
Norman Hilberry (left) and Leó Szilárd at Stagg Field, site of the first self-sustaining nuclear chain-reaction. There is no definitive origin for the term. United States Nuclear Regulatory Commission historian Tom Wellock notes that scram is English-language slang for leaving quickly and urgently, and he cites this as the original and most likely accurate basis for the use of scram in the ...
A reactor protection system (RPS) is a set of nuclear safety and security components in a nuclear power plant designed to safely shut down the reactor and prevent the release of radioactive materials. The system can "trip" automatically (initiating a scram), or it can be tripped by the operators. Trips occur when the parameters meet or exceed ...
The groups say PG&E has delayed testing on equipment that could “cause a catastrophic meltdown” of Diablo Canyon nuclear power plant. Anti-nuclear groups demand ‘immediate shutdown’ of ...
Here is a look at Germany's politically charged debate on nuclear power. The move marks another hiccup in the country's long-running plan to end the use of atomic energy.
One of the plant's six reactors, according to the IAEA, needs to be kept in a hot shutdown mode in order to produce steam required for nuclear safety, including the processing of liquid ...
Passive nuclear safety is a design approach for safety features, implemented in a nuclear reactor, that does not require any active intervention on the part of the operator or electrical/electronic feedback in order to bring the reactor to a safe shutdown state, in the event of a particular type of emergency (usually overheating resulting from a loss of coolant or loss of coolant flow).
The power station at Dodewaard was shut down in 1997. In 1997 the government decided to end Borssele's operating licence, at the end of 2003. In 2003 the shut-down was postponed by the government to 2013. [98] [99] In 2005 the decision was reversed and research in expanding nuclear power has been initiated.