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safety shutdown system

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  • Safety instrumented system — A Safety Instrumented System (SIS) is a form of process control usually implemented in industrial processes, such as those of a factory or an oil refinery. The SIS performs specified functions to achieve or maintain a safe state of the process… …   Wikipedia

  • System Management Mode — (SMM) is an operating mode first released with the Intel 386SL and available in later microprocessors in the x86 architecture, in which all normal execution (including the operating system) is suspended, and special separate software (usually… …   Wikipedia

  • System 80 — is a pressurized water reactor design by the Westinghouse Electric Company.ystem 80+An updated version of the plant has been designed which was given a + at the end of the name. This indicates an evolutionary plant design changes were made to… …   Wikipedia

  • 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… …   Wikipedia

  • Nuclear reactor safety systems — This article covers the technical aspects of active nuclear safety systems. For a general approach to nuclear safety, see nuclear safety. The three primary objectives of nuclear reactor safety systems as defined by the Nuclear Regulatory… …   Wikipedia

  • Lasers and aviation safety — Under certain conditions, laser light or other bright lights (spotlights, searchlights) directed at aircraft can be a hazard. The most likely scenario is when a bright visible laser light causes distraction or temporary flash blindness to a pilot …   Wikipedia

  • Automatic Laser Shutdown — Automatic Laser Shutdown, or ALS, is a method for assuring Laser safety in Optical Transmission Systems (Like optical SDH) registered under US Patent #6194707.ALS is a semi intelligent method which cuts the Tx line if the Rx line is inactive, and …   Wikipedia

  • Laser safety — A typical laser warning symbol. Laser safety is safe design, use and implementation of lasers to minimize the risk of laser accidents, especially those involving eye injuries. Since even relatively small amounts of laser light can lead to… …   Wikipedia

  • Nuclear safety in the United States — Nuclear safety in the U.S. is governed by federal regulations and continues to be studied by the Nuclear Regulatory Commission (NRC). The safety of nuclear plants and materials controlled by the U.S. government for research and weapons production …   Wikipedia

  • Nuclear safety — covers the actions taken to prevent nuclear and radiation accidents or to limit their consequences. This covers nuclear power plants as well as all other nuclear facilities, the transportation of nuclear materials, and the use and storage of… …   Wikipedia

  • Canadian Nuclear Safety Commission — The Canadian Nuclear Safety Commission (CNSC), previously known as the Atomic Energy Control Board (AECB), is best described as the governmental nuclear energy and materials watchdog in Canada. In addition to nuclear power plants and nuclear… …   Wikipedia

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