The chernobyl accident updating of insag 1 Public hot chat

The chernobyl accident updating of insag 1

Safety Wisdom the judgement and decision-making of those in senior positions who must decide what to do to remain safe, and how they also use quantitative and qualitative information to support those decisions.

In INSAG publications, the concept of safety culture has been extended beyond the purely operational aspects to cover all types of activities at all stages in the lifetime of a nuclear power plant which may affect its safe operation.The difficulty is that once a culture is set and norms are established, it can be hard to change the status quo.Changing a culture of fear and blame can therefore be difficult.Late at night on 26 April 1986 in the then USSR, a team of nuclear workers prepared to conduct a test on Reactor 4 of the Chernobyl nuclear power plant as part of an otherwise routine shutdown.The exercise was to test a modified safety system and determine how long the reactor’s steam turbines would continue to power to the main coolant pumps following a loss of main electrical power supply.

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In order to achieve the test conditions automatic shutdown devices were inhibited and the emergency core cooling system shut-down.

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