Document: NUREG-0800
Document ID: 4f097781-0d4c-4b5b-be06-a3cd19ae9fe8
Document Type: srp
Title: Revision 5 - March 2007
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0706/ML070660430.pdf
Revision Date: 2023-06
Chapter: 7
Section ID: 7
CFR Part: 
CFR Title: 

Content:
on, anticipated operational occurrences, and accidents. The information systems important to safety include those systems which provide information for manual initiation and control of safety systems. They indicate that plant safety functions are being accomplished and provide information from which appropriate actions can be taken to mitigate the consequences of anticipated operational occurrences and accidents. During normal plant operation, the information systems important to safety provide information on the normal status and the bypassed and inoperable status of safety systems. Integration - The process of combining system entities into an overall functioning system. Interface - A shared boundary across which information is passed [IEEE Std 610.12]. Interlock systems important to safety - Those systems which operate to reduce the probability of occurrence of specific events or to maintain safety systems in a state to assure their availability in an accident. These systems differ from protection systems in that interlock system safety action is taken prior to or to prevent accidents. Interrupt - The suspension of a process to handle an event external to the process. Management (as a software life cycle process planning characteristic) - Those characteristics of Appendix 7-B-8 Revision 5 - March 2007 planning documents that are primarily significant to the managing of the project activities described in the planning document. The management characteristics of software life cycle plans discussed in SRP BTP 7-14 are: purpose, organization, oversight, responsibilities, risks, and security. Maximum credible fault (MCF) - A voltage or current transient that may exist in circuits, as determined by test or analysis, taking into consideration the circuit location, routing, and interconnections combined with failures that the circuit may credibly experience. On-line testing - Testing performed on an operable system. Operable - A system, subsystem, train, component, or