Document: NUREG-0800
Document ID: c90016c6-e03f-4224-8ff3-87a6f7d3ca42
Document Type: srp
Title: Appendix 7-A
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0525/ML052500547.pdf
Revision Date: 2023-06
Chapter: 7
Section ID: 7
CFR Part: 
CFR Title: 

Content:
Unambiguity requires that instructions to users have only one interpretation by the users. h. Installation Activities & Maintenance Manuals One or more software maintenance manuals 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 sections of this BTP are not directly relevant. However, the software development process characteristics listed below should be possessed by software maintenance manuals. Completeness requires that maintenance procedures be 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 required. 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 described. Style requires that the maintenance manual be understandable by the users. A precise definition of each technical term should exist, either in the maintenance manual or in a separate dictionary or glossary. The maintenance manual may be organized in the style of a reference manual, with the assumption that its users are well trained. Traceability requires that a forward trace exist between the maintenance plan and the maintenance manual, which shows how each requirement is carried out by the maintenance organization. i. Installation Activities & Training Manuals One or more software training manuals should be produced. They may be incorporated into a system training manual. Because