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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).
Under normal conditions, nuclear power plants receive power from generator. However, during an accident a plant may lose access to this power supply and thus may be required to generate its own power to supply its emergency systems. These electrical systems usually consist of diesel generators and batteries.
A clean-up crew working to remove radioactive contamination after the Three Mile Island accident. Nuclear safety is defined by the International Atomic Energy Agency (IAEA) as "The achievement of proper operating conditions, prevention of accidents or mitigation of accident consequences, resulting in protection of workers, the public and the environment from undue radiation hazards".
Restoring power looks different depending on the type of damage. On a normal day, it might require resetting safety systems if a tree branch brushed against a power line.
The Benton Franklin Health District gave failing grades in five food safety inspections of restaurants and other businesses selling food in the Tri-Cities area from Dec. 16-22.. The health ...
More than 260,000 homes and businesses were without power in Washington state and another 18,000 in California by 4 p.m. PT Thursday. ... Wind gusts in the area could get up to 70 mph Thursday ...
Local authorities are skeptical that sufficient safety measures have been taken and are reticent to give their permission – now required by law – to bring suspended nuclear reactors back online. [116] More than 60,000 people in Japan marched in demonstrations in Tokyo, Osaka, Hiroshima and Fukushima on June 11, 2011. [117]
The category one hurricane, which made a direct hit on the city of Houston in Texas with 80 miles per hour winds at landfall, left more than two million people without power in the Houston area ...