Document: NUREG-0800
Document ID: 21b88814-85a2-4153-982a-8f00240a5d45
Document Type: srp
Title: GENERIC GUIDELINES FOR EXTENDED POWER UPRATE TESTING
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0300/ML030080406.pdf
Revision Date: 2023-06
Chapter: 14
Section ID: 14.2.1
CFR Part: 
CFR Title: 

Content:
cipated Operational Occurrences The licensee's justification for not performing a particular power ascension test should include a consideration of the change in the associated safety analysis results due to the proposed EPU. To aid in this review, the information provided in Attachment 2 to this SRP section includes a reference to the safety analysis SRP sections related to each transient test, if applicable. For safety analysis acceptance criteria that can be quantitatively measured (e.g. peak reactor coolant system pressure), a reduction in available margin by less than approximately 10 percent would normally be considered to be a minimal change in consequences. The available margin is the difference between the standard review plan accident analysis acceptance criterion of interest and the plant-specific value calculated at EPU conditions. For larger reductions in available margin, the licensee may consider such factors as the amount of remaining margin; the sensitivity of the results to changes in analysis assumptions; and the capability of transient testing to provide useful confirmatory data. Although the initial power-ascension test program objectives, as described in Reference 8, included validation of analytical models and verification of assumptions used for predicting plant response to anticipated transients and postulated accidents, transient testing is not required for the purposes of analytical code validation for EPU license amendment reviews. The applicability and validation of accident analysis analytical codes is raviewed by the staff in accordance with separate EPU review standard guidance. f. Guidance Contained in Vendor Togical Reports The NRC previously reviewed and accepted General Electric (GE) Company Licensing Topical Report, "Generic Guidelines for General Electric Boiling Water Reactor Extended Power Uprate" (referred to as ELTR-1), NEDC-32424P-A, Class III, February 1999, as an acceptable basis for BWR EPU amendment requests. This