Document: NUREG-0800
Document ID: be3ce44f-6784-4f40-baef-12c96ec1ff96
Document Type: srp
Title: provides additional guidance on digital data communications systems.
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0706/ML070670183.pdf
Revision Date: 2023-06
Chapter: 7
Section ID: 7.9
CFR Part: 
CFR Title: 

Content:
the users. B.3.3.7.2 Review Guidance for SBDs The reviewer should keep in mind that the intent of the staff review of manuals is to ensure that digital system is safe, and therefore the portion of the operations manuals which is of primary concern is the portion which deals with operation of the system under unusual or emergency conditions. The portion of the manual which deals with normal operation should be reviewed, but does not require the depth of review that emergency operations does. B.3.3.8 Installation Activities - Software Maintenance Manuals (SMMs) NUREG/CR-6101, Section 3.7.4 “Maintenance Manuals,” contains relevant guidance. One or more SMM should be produced. They may be incorporated into a system maintenance manual. Because maintenance manuals do not impose requirements on the software itself, the functional characteristics described in other subsections of this BTP are not directly relevant. However, the software development process characteristics listed below should be possessed by software maintenance manuals. B.3.3.8.1 Process Characteristics of SMMs The SMMS should exhibit each of the specified software development process characteristics: completeness, style, and traceability. BTP 7.14-65 Revision 5 - March 2007 Completeness means that maintenance procedures are fully defined. This should include identification of precautions and limitations that must be observed during maintenance to avoid exposing personnel or the plant to hazards or security vulnerabilities. Trouble reports should be collected from field installations and analyzed to determine if changes to the software are needed. Configuration management procedures should be described in or referenced by the maintenance manual. Procedures should exist to (1) verify that changes have been carried out correctly and that no faults have been introduced in the software by the changes, and (2) ensure that software is correctly returned to service. Field upgrade procedures should be