Document: NUREG-0800
Document ID: 2bca792d-0e88-4e2d-b437-be572ed57a48
Document Type: srp
Title: REVIEW OF TRANSIENT AND ACCIDENT ANALYSIS METHODS
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0708/ML070820123.pdf
Revision Date: 2023-06
Chapter: 15
Section ID: 15.0.2
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, Maryland; the PDR’s mailing address is USNRC PDR, Washington, DC 20555-0001. The PDR can also be reached by telephone at (301) 415-4737 or (800) 397-4205, by fax at (301) 415-3548, and by email to PDR@nrc.gov. The SRP is also available through the NRC’s public Web site at http://www.nrc.gov/reading-rm/doc-collections/nuregs/staff/sr0800/. 15.0.2-19 March 2007 Sensitivity Studies The term is generic to several types of analyses; however, the definition of most interest here relates to those studies associated with the PIRT process and used to determine the relative importance of phenomena or processes. This may also involve analysis of experimental data that are a source of information used in the PIRT process. Separate Effects An experiment in which the primary focus is on a single parameter Test or process. Safety Evaluation A report by the NRC that evaluates a submittal and either accepts or Report rejects the proposals in the submittal. Standard Review Acceptable plan for NRC reviewers, as set forth in NUREG-0800. Plan Transients In this SRP, accidents and transients refer to those events that are defined in NUREG-0800 to be analyzed to meet the requirements of the General Design Criteria (GDC), except for the fuel assembly misloading event and all radiological consequence analyses. Uncertainty There are two separate but related definitions of primary interest: a. The inaccuracy in experimentally derived data typically generated by the inaccuracy of measurement systems. b. The inaccuracy of calculating primary safety criteria or related figures of merit typically originating in the experimental data and/or assumptions used to develop the analytical tools. The analytical inaccuracies are related to approximations in solving the equations and constitutive relations. User Manual A document that includes modeling guidelines for the accident under consideration, procedures for selecting code inputs, and procedures for transferring information between different