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  2. Scram - Wikipedia

    en.wikipedia.org/wiki/Scram

    Not all of the heat in a nuclear reactor is generated by the chain reaction that a scram is designed to stop. For a reactor that is scrammed after holding a constant power level for an extended period (greater than 100 hrs), about 7% of the steady-state power will remain after initial shutdown due to fission product decay that cannot be stopped.

  3. Nuclear reactor safety system - Wikipedia

    en.wikipedia.org/wiki/Nuclear_reactor_safety_system

    Boiling water reactors are able to SCRAM the reactor completely with the help of their control rods. [2] In the case of a loss of coolant accident (LOCA), the water-loss of the primary cooling system can be compensated with normal water pumped into the cooling circuit.

  4. Reactor protection system - Wikipedia

    en.wikipedia.org/wiki/Reactor_protection_system

    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 ...

  5. Scram (disambiguation) - Wikipedia

    en.wikipedia.org/wiki/Scram_(disambiguation)

    SCRAM bracelet, an ankle bracelet for Secure Continuous Remote Alcohol Monitoring; Salted Challenge Response Authentication Mechanism (or SCRAM), a computer security mechanism used with the Simple Authentication and Security Layer; Scram cannon, a hypothetical kinetic energy weapon based on ram accelerator technology

  6. RBMK - Wikipedia

    en.wikipedia.org/wiki/RBMK

    Certain aspects of the original RBMK reactor design had several shortcomings, [3] such as the large positive void coefficient, the 'positive scram effect' of the control rods [4] and instability at low power levels—which contributed to the 1986 Chernobyl disaster, in which an RBMK experienced an uncontrolled nuclear chain reaction, leading to ...

  7. Boiling water reactor safety systems - Wikipedia

    en.wikipedia.org/wiki/Boiling_water_reactor...

    The Reactor Protection System (RPS) is a system, computerized in later BWR models, that is designed to automatically, rapidly, and completely shut down and make safe the Nuclear Steam Supply System (NSSS – the reactor pressure vessel, pumps, and water/steam piping within the containment) if some event occurs that could result in inadvertant criticality.

  8. Chicago Pile-1 - Wikipedia

    en.wikipedia.org/wiki/Chicago_Pile-1

    Chicago Pile-1 (CP-1) was the world's first artificial nuclear reactor. On 2 December 1942, the first human-made self-sustaining nuclear chain reaction was initiated in CP-1 during an experiment led by Enrico Fermi .

  9. Norman Hilberry - Wikipedia

    en.wikipedia.org/wiki/Norman_Hilberry

    Norman Hilberry (March 11, 1899 – March 28, 1986) was an American physicist, best known as the director of the Argonne National Laboratory from 1956 to 1961. In December 1942 he was the man who stood ready with an axe to cut the scram line during the start up of Chicago Pile-1, the world's first nuclear reactor to achieve criticality.