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:
t phase should be provided. The plan should identify the controls needed over maintenance activities and maintenance and test equipment to prevent unauthorized changes to hardware, software and system parameters. At a minimum, the potential for introducing unauthorized changes during repair, testing and calibration should be addressed. Implementation Characteristics The implementation characteristics that the software maintenance plan should exhibit include measurement and procedures. Measurement requires a set of indicators used to determine the success or failure of the maintenance effort. The plan should require that data associated with maintenance activities be collected and analyzed Rev. 4 — June 1997 Appendix 7-A BTP HICB-14-18 to determine the effectiveness of the maintenance effort. The error rate found during maintenance activities should be measured, recorded, analyzed and reported. Procedures requires a description of the maintenance strategy. The plan should include procedures for problem reporting by customers, and for resolution of those problem reports. The problem reporting procedure should give time and date of occurrence, a brief description of the problem (including the state of the system at the beginning of the occurrence) and a description as to what was done to correct the problem. It should require that reported problems be evaluated to allow the identification of nonconforming items and the performance of corrective actions as described in Sections XV and XVI of 10 CFR 50 Appendix B. The plan should describe the process for identification, documentation, evaluation, segregation where practical, and disposition of nonconforming items, and for notification to affected organizations. Evaluation of nonconforming items and corrective actions should include as appropriate evaluation with respect to the requirements of 10 CFR 50.59 and reporting per the requirements of 10 CFR 21. Nonconformances to design requirements dispositioned "use-as-is"