Document: NUREG-0800
Document ID: 965060de-8238-4868-a4c8-9a07c3e8cf13
Document Type: srp
Title: Diversity and
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML1515/ML15159A199.pdf
Revision Date: 2023-06
Chapter: 7
Section ID: 7.9
CFR Part: 
CFR Title: 

Content:
ation documentation. To demonstrate reasonable assurance, the acceptance process for most PDS can be expected to comprise a variety of technical activities conducted in significant detail. Guidance on these activities has been provided in EPRI TR-106439. The NRC has issued a safety evaluation report (SER) on the EPRI guideline in which it is determined that “TR-106439 contains an acceptable method for dedicating commercial-grade digital equipment for use in nuclear power plant safety applications.” If the guidance in EPRI TR-106439 is applied in the dedication of a component, the following items should be noted by the reviewer: • EPRI TR-106439 is not intended to be used as a detailed “how-to” manual. There may be significant variation in specific steps taken depending on vendors, components, and applications. Detailed information, in addition to that provided in the report examples, will be needed to perform an actual commercial dedication. Use of EPRI TR-106439 in connection with a license amendment or an evaluation under 10 CFR 50.59, “Changes, Tests, and Experiments,” should include descriptions of the alternatives selected and deviations from the guidance in the documentation of the acceptance process. • The dedication effort may be “graded” based on its safety significance and relative complexity. • EPRI TR-106439 references EPRI NP-5652, which discusses four methods for use in commercial dedication: (1) special tests and inspections, Appendix 7.0-A-16 Draft Revision 6 – August 2015 (2) commercial-grade survey of the supplier, (3) source verification, and (4) an acceptable supplier or item performance record. As noted in EPRI TR-106439, supported by Generic Letters (GL) 89-02, “Actions to Improve the Detection of Counterfeit and Fraudulently Marketed Products,” and GL 91-05, “Licensee Commercial-Grade Procurement and Dedication Programs,” for typical applications no one method will suffice by itself, and it is likely that