Minimization Of Reactor Dead Time By Power Monitoring In Slow Shut Down Mode

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A study on minimization of the dead time when a research reactor can not be restarted during ~ 40 hours due to xenon-135 poisoning is presented. Theoretical considerations based on reactor dynamics equations together with the SCALE4.4a modules system are used to choose an optimum power monitoring regime in a slow reactor set back. Utilizing different power monitoring scenarios in an extended shutdown period of 1520 hours a reduction of the reactor dead time up to 68% in comparison with sudden shutdown mode (scram) is obtained at energy savings (MW.d) equivalent to ~ 15 hours of full power operation.


Original languageEnglish
Title of host publicationInternational Conference on the Physiscs of Reactors. "Nuclear Power: A Sustainable Resource"
Place of PublicationIllinois, United States
Publication statusPublished - 16 Sep 2008
Event2008 - PHYSOR - International Conference on the Physics of Reactors: Nuclear Power: A Sustainable Resource - Paul Scherrer Institut and the Swiss Nuclear Society., Interlaken, Switzerland
Duration: 14 Sep 200819 Sep 2008


Conference2008 - PHYSOR - International Conference on the Physics of Reactors
Internet address


  • xenon poisoning, reactor dead time

ID: 122268