SYstems test 4 Flashcards
5.5 IF any of the following conditions occur, THEN Core Alterations SHALL be suspended pending investigation by the Core Loading Supervisor:
5.5.1 An unanticipated increase in the neutron count rate, by a factor of two occurs on both Core Monitoring NI’s during any single refueling step.
5.5.2 An unanticipated increase in the neutron count rate, by a factor of five occurs on either Core Monitoring NI during any single refueling step.
5.5.3 There is an unexplained decrease in boron concentration greater than or
equal to 25 ppm between two successive samples in either the operating RHR loop Form 2 or the refueling canal Form 3.
5.5.4 The operating RHR loop inlet temperature unexpectedly changes by more
than 10F between two successive readings Form 2.
5.5.5 IF either Core Monitoring NI becomes inoperable, THEN core alterations may recommence when an alternate Core Monitoring NI is selected and reference counts obtained if required. (Technical Specification 3/4.9.2)
5.5.6 Communications between the Control Room Operator and fuel handling personnel in either the FHB or RCB are lost. (TRM 3/4.9.5)
5.5.7 Load limits on the Refueling Machine or the Auxiliary Hoist as specified in Technical Requirements Manual (TRM) 3.9.6 are exceeded.
5.5.8 Water is not clear enough during periods of fuel movement to view the top of the fuel assemblies with supplemental lighting.
5.5.9 Water in the core is not clear enough to view the lower core support plate and pins when attempting to seat fuel assemblies in the core.
5.5.10 The Inverse Count Rate Ratio (ICRR) data indicates an abnormal condition exists.
5.5.11 The boron concentration in the operating RHR loop as recorded on Form 2 or the refueling canal as recorded on Form 3 drops below 2800 ppm.
(Reference 7.3)
5.5.12 Any Technical Specification or Technical Requirements Manual Action statements are entered requiring suspension of core alterations.
5.5.13 SFP Temperature exceeds the applicable limit in Plant Curve Book Figure 5.15 during Core Offload.
