Document: NUREG-0800
Document ID: 54438746-c093-49ca-b943-72df99938b58
Document Type: srp
Title: INADVERTENT LOADING AND OPERATION OF A FUEL ASSEMBLY IN AN IMPROPER POSITION
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0523/ML052350404.pdf
Revision Date: 2023-06
Chapter: 15
Section ID: 15.4.7
CFR Part: 
CFR Title: 

Content:
el rod failure limits could be exceeded during normal operation, the offsite consequences should be a small fraction of the 10 CFR Part 100 guidelines. III. REVIEW PROCEDURES The review procedures for fuel loading errors are as follows: 1. The reviewer verifies that the various cases of misloaded fuel assemblies outlined in subsection I above have been analyzed by the applicant and the worst case determined. For each case the effect on the reactor power distribution should be given. 2. The reviewer determines that the effect each postulated error has on reactor instrumentation has been ascertained. For limiting events (where fuel rod failure limits are exceeded), the reviewer verifies that .acceptable I techniques (see SRP Section 4.4) have been used to calculate the fuel temperature conditions. 3. The reviewer assures compliance with acceptance criterion a of subsection II above by reviewing the plant operating procedures to verify that they contain provisions requiring that incore instrumentation be used to search for misloaded fuel after each fueling operation. Since low-power mapping is typically done, searching for misloading can be accomplished by the usual low-power maps. 4. When it is determined that fuel rod failure limits can be exceeded, the appropriate technical review branch is requested to perform dose calcula- tions to assure that acceptable criterion b of subsection II above is met. 15.4.7-2 Rev. 1 - July 1981 IV. EVALUATION FINDINGS The reviewer verifies that sufficient information has been provided and his review supports the following kind of statement, to be included in the staff's safety evaluation report: The staff has evaluated the consequences of a spectrum of postulated fuel loading errors. We conclude that the analyses provided by the applicant *have shown for each case considered that either the error is detectable by the available instrumentation (and hence remediable) or the error is undetectable but the offsite consequences of any fuel