IEEE 338-2006 pdf download IEEE Standard Criteria for Periodic Surveillance Testing of Nuclear Power Generating Station Safety Systems
3.6 go/no-go: A set of terms (in colloquial usage) referring to the condition or state of operability of a unitthat can only have two parameters: (A) go, functioning properly; or (B) no-go, not functioning properly.
3.7 limiting condition for operation (LCO): The lowest functional capability or performance level ofequipment required for safe operation of the facility.
3.8 operational availability: The measured or observed characteristic of an item expressed by theprobability that it will be operable when needed as determined by periodic test and resultant analysis.
3.9 overlap testing: Overlap testing consists of channel, train, or load group verification by performingindividual tests on the various components and subsystems of the channel, train, or load group. Theindividual component and subsystem tests check common parts of adjacent subsystems, such that the entirechannel, train, or load group is verified by testing of individual components or subsystems and by repetitivetesting of common parts of adjacent subsystems.
3.10 periodic test: A test performed at scheduled intervals to detect failures and verify operability
3.11 safety function: One process or condition (for example, emergency negative reactivity insertion, post-accident heat removal,emergency core cooling, post-accident radioactivity removal, and containmentisolation) essential to maintaining plant parameters within acceptable limits established for a design basisevent.
3.12 safety group: A given minimal set of interconnected components, odules, and equipment that canaccomplish a safety function.
3.13 safety system: A system that is relied on to remain functional during and following design basisevents to ensure (A) the integrity of the reactor coolant pressure boundary: (B) the capability to shutdownthe reactor and maintain it in a safe shutdown condition; or (C) the capability to prevent or mitigate theconsequences of accidents that could result in potential offsite exposures comparable with 10 CFRPart 100 guidelines.
3.14 surveillance: The determination of the state, or condition, of a system or subsystem.
3.15 surveillance test: Periodic test to determine the state or condition of a system or subsystem.
3.16 test bypass: A mode of testing whereby the safety group under test is designed to permit any onechannel or load group to be maintained, tested, or calibrated during power operation, without initiating aprotective action of the safety group.
3.17 test completion: The completion of active testing of the item and the return of the item to service.
3.18 test duration: The elapsed time between the test initiation and the test termination.
3.19 test initiation: The application of a test input or removal of equipment train from service to perform atest.
3.20 test input: A real or simulated, but deliberate, action that is imposed upon a sensor, channel, train,load group, or other system or device for the purpose of testing.
IEEE 338-2006 pdf download
PS:Thank you for your support!
