Document: NUREG-0800
Document ID: 409035a3-eae4-4524-8ae0-ca7775f4072a
Document Type: srp
Title: Revision 5 - March 2007
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0705/ML070550073.pdf
Revision Date: 2023-06
Chapter: 7
Section ID: 7
CFR Part: 
CFR Title: 

Content:
ctions to be performed.” 2. Relevant Guidance Regulatory Guide 1.152, Revision 2, “Criteria for Digital Computers in Safety Systems of Nuclear Power Plants,” provides guidance for complying with the requirements for safety systems that use digital computer systems. The guidance in Regulatory Guide 1.152 refers to IEEE Std 7-4.3.2-2003, “IEEE Standard Criteria for Digital Computers in Safety Systems of Nuclear Power Generating Stations.” Standard Review Plan (SRP) Appendix 7.1-D provides additional guidance. NUREG/CR-6090 covers the application of PLCs to nuclear reactors. The guidance in this NUREG will aid the reviewer in the evaluation of an I&C system containing one or more PLCs. NUREG/CR-6463, Revision 1, “Review Guidelines on Software Languages for Use in Nuclear Power Plant Safety Systems,” describes recommended practices in the use of common PLC programming languages. EPRI Topical Report TR-106439, “Guideline on Evaluation and Acceptance of Commercial Grade Digital Equipment for Nuclear Safety Applications,” as accepted by the NRC safety evaluation (SER) report dated July 17,1997, provides more detail on the characteristics of an acceptable process for qualifying existing software, and discusses the use of engineering judgment and compensating factors. The guidance of SRP BTP 7-14 may be applied to the evaluation of vendor processes described in EPRI TR-106439. Appendix 7.1-D subsection 5.4.2 which references IEEE Std. 7-4.3.2-2003 sub-clause 5.4.2 contains the guidance of EPRI TR-106439 EPRI TR-107330, “Generic Requirements Specification for Qualifying a Commercially Available PLC for Safety-Related Applications in Nuclear Power Plants,” as accepted by the NRC SER dated July 30, 1998, describes the generic functional and qualification requirements for a PLC. Generic qualification is the first of a two-step process; further qualification for a plant-specific application is required. Examples of generic qualifications can be found in the