Nuclear art other apocalyptical and post apocalyptical paintings up to 1965. The British sculptor, Henry Moore, created a bronze public sculpture, entitled, Nuclear Energy (sculpture) (1967) that depicted both the fatality of nuclear weapons as well as celebrated the invention of nuclear energy for use as electrical power. The sculpture is located on the grounds of the University of Chicago, where the first self-sustaining nuclear reaction was produced at the Chicago Pile-1, under the oversight of the Manhattan Project and Enrico Fermi. The sculpture is in the form of a hybrid mushroom cloud and human skull. After the March 2011 accident that
Shutdown (nuclear reactor) coolant system is depressurized. Shutdown (nuclear reactor) In a nuclear reactor, shutdown refers to the state of the reactor when it is subcritical by at least a margin defined in the reactor's technical specifications. Further requirements for being shut down may include having the reactor control key be secured and having no fuel movements or control systems maintenance in progress. The shutdown margin is defined in terms of reactivity, frequently in units of delta-k/k (where k is taken to mean k-effective, the effective multiplication factor) or occasionally in dollars (the dollar is a unit equal to the change in reactivity