Document: NRC Regulatory Guide
Document ID: 74c49394-8dbf-46e7-b62a-b85de93b47d8
Document Type: regulatory_guide
Title: Initial Test Programs for Water-Cooled Nuclear Power Plants + HISTORY - HISTORY 11/2012 – DG-1259 , Proposed Revision 4 11/2006 – DG-1166 , Proposed Revision 3 (Rev. 4)
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML1229/ML12298A071.pdf
Revision Date: 2023-06
Chapter: 
Section ID: RG-1.68
CFR Part: 
CFR Title: 

Content:
full power). 14. Establish water quality and identify limits. Appendix C to DG-1259, Page C-6 15. Establish and verify the minimum fuel loading boron concentration. b. Procedure Details The procedure should include instructions or information for the following areas: 1. loading sequence and pattern for fuel, control rods, poison curtains, and other components, with guidance on fuel addition increments (in general, the procedure should require constituting the core so that the reactivity worth of added individual fuel elements becomes less as the core is assembled). 2. maintenance of a display for indicating the status of the core and fuel pool, as well as appropriate records of core loading 3. proper seating and orientation of fuel and components (the procedure should specify a visual check of each assembly in each core position) 4. functional testing of each control rod immediately following fuel loading (BWR) 5. nuclear instrumentation and neutron source requirements for monitoring subcritical multiplication, including source or detector relocation and normalization of the count rate after relocation (normally, a minimum of three source range monitors on a BWR and two on a PWR should be operable whenever operations are performed that could affect core reactivity) 6. flux monitoring, including counting times and frequencies and rules for plotting inverse multiplication and interpreting plots (the counting period for count rates should be specified, and an inverse multiplication plot should be maintained) 7. the expected subcritical multiplication behavior 8. determination of adherence to the minimum shutdown margin and rod worth tests in un-borated reactors and the frequency of determination (the minimum shutdown margin should be proved periodically during loading and at the completion of loading, and shutdown margin verifications should not involve a planned approach to criticality using nonstandard rod patterns or with operational interlocks bypassed) 9.