Document: NUREG-0800
Document ID: 06884384-e650-488f-bf96-f48afd211643
Document Type: srp
Title: Revision 5 - March 2007
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0705/ML070550075.pdf
Revision Date: 2023-06
Chapter: 7
Section ID: 7
CFR Part: 
CFR Title: 

Content:
rly controlled, calibrated, and adjusted at specified periods to maintain accuracy within necessary limits. 2. Relevant Guidance Regulatory Guide 1.22, "Periodic Testing of Protection System Actuation Functions," describes acceptable methods of including actuation devices in the periodic tests of the protection system during reactor operations. Regulatory Guide 1.47, "Bypassed and Inoperable Status Indication for Nuclear Power Plant Safety Systems," describes an acceptable method of complying with the requirements of IEEE Std. 279-1971 with regard to indicating the inoperable status of a portion of the protection system, systems actuated or controlled by the safety system, or auxiliary supporting features and other auxiliary features. IEEE Std 603-1991, Clause 5.8.3, gives the equivalent requirements for safety systems. Regulatory Guide 1.53, "Application of the Single-Failure Criterion to Safety Systems," which endorses IEEE Std. 379-2000, "IEEE Standard Application of the Single-Failure Criterion to Nuclear Power Generating Station Safety Systems," states that the protection system must be capable of accomplishing the required protective function in the presence of any single detectable failure concurrent with all identifiable, but non-detectable, failures. Consequently, self-testing and periodic testing are important elements in the design's ability to meet the single-failure criterion. BTP 7-17-3 Revision 5 - March 2007 Regulatory Guide 1.118, "Periodic Testing of Electric Power and Protection Systems," states that the criteria of IEEE Std. 338-1987, "IEEE Standard Criteria for the Periodic Surveillance Testing of Nuclear Power Generating Station Safety Systems," are considered acceptable methods for the periodic testing of protection systems (subject to the specific exceptions discussed in Regulatory Guide 1.118). IEEE Std. 338-1987 provides design and operational criteria for the performance of periodic and automatic testing; its criteria are supplementary to