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IEEE Std 308-2020 pdf free download

IEEE Std 308-2020 pdf free download.IEEE Standard Criteria for Class 1E Power Systems for Nuclear Power Generating Stations.
definable performance characteristics that permit it to be tested as a unit. A module could be a card, a drawout circuit breaker, or other subassembly of’ a larger device, provided it meets the requirements of this definition.
nuclear power generating station (station): A plant where electric energy is produced from nuclear energy by means of suitable apparatus. The station may consist of one or more generating units.
passive reactor design: A reactor design that uses forces of nature, such as fluid density differences and heat transfer, to create natural circulation cooling on a scale sufficient to replace large active components for accident and operational event response. This eliminates the need for forced coolant circulation and associated active components requiring Class 1 E ac power for accident and operational event response.
1o%cr sources: The electrical and mechanical equipment and interconnections necessary to generate or convert power.
NOTE — Electric power source and power supply are interchangeable within the context of this document.
preferred power supply: The power supply tiom the transmission system to the Class I E distribution system that is preferred to furnish electric power under accident and post-accident conditions.
programmable digital device: A device that can store instructions and is capable of executing a systematic sequence of operations pertbrmed on data that is controlled by internally stored instructions.
protection system: The part of the sense and command features involved in generating the signals used primarily for the reactor trip system and engineered safety features.
protective action: The initiation of a signal within the sense and command features, or the operation of equipment within the execute features, to accomplish a safey function.
redundant equipment or system: A piece of equipment or a system (hat duplicates the essential function of another piece of equipment or system to the extent that either may perfbrm the required thnc ion regardless of the state of operation or failure of the other.IEEE Std 308-2020 pdf free download.

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