Document: NUREG-0800
Document ID: fea61ff0-f344-4101-adfb-590e3d9dfafe
Document Type: srp
Title: Draft Revision 6 – August 2015
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML1515/ML15159A946.pdf
Revision Date: 2023-06
Chapter: 7
Section ID: 7
CFR Part: 
CFR Title: 

Content:
ontains 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. 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 described. Style means that the maintenance manual is understandable to 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 means that a forward trace exists between the maintenance plan and the maintenance manual, which shows how each requirement is carried out by the maintenance organization. BTP 7.14-63 Draft Revision 6 - August 2015 B.3.3.8.2 Review Guidance for SMMs Prior to the review of the maintenance manuals, the reviewer