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:
erations Manuals (OMs) NUREG/CR-6101, Section 3.7.1, “Operations Manual,” contains relevant guidance. One or more software OMs should be produced. They may be incorporated into a system operations manual. Because operations 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 exhibited by software operations manuals. B.3.3.7.1 Process Characteristics of OMs The OMs exhibit each of the specified software development process characteristics: completeness, consistency, style, traceability, and unambiguity. Completeness means that all actions available to the system operator are fully described for all operating modes, including error recovery and backup. Operator actions should be specified in terms of inputs supplied by the operator or equipment, actions initiated by the operation, and responses to the operator. The purpose and operation of each function should be described, including interfaces with other functions. The operations manual should describe the operational environment within which the software will operate, including precautions and limitations that must be observed during operations to avoid exposing personnel or the plant to hazards or security vulnerabilities. All variables in the physical environment that the software must monitor and control should be fully described. User interfaces should be fully described for each category of user. Consistency means that the operations manual is consistent with the system operations, safety system requirements, the safety system design, the SRSs, the SDS, and documented descriptions and known properties of the operational environment within which the safety system will operate. Individual user instructions should not contradict other instructions. Uniform and consistent terminology, notation, and definitions should be used