Document: NUREG-0800
Document ID: 0698b3f7-427d-4477-8d06-7b4cb5c20c5b
Document Type: srp
Title: INFORMATION SYSTEMS IMPORTANT TO SAFETY
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML1602/ML16020A088.pdf
Revision Date: 2024-06
Chapter: 7
Section ID: 7.5
CFR Part: 
CFR Title: 

Content:
R) 50.54(jj) and 10 CFR 50.55(i). 2. 10 CFR 50.55a(h), “Protection Systems and Safety Systems,” requires compliance with the Institute of Electrical and Electronics Engineers (IEEE) Standard (Std) 603-1991, “IEEE Standard Criteria for Safety Systems for Nuclear Power Generating Stations,” and the correction sheet dated January 30, 1995. For nuclear power plants with construction permits issued before January 1, 1971, the applicant or licensee may elect to comply instead with their plant-specific licensing basis. For nuclear power plants with construction permits issued between January 1, 1971, and May 13, 1999, the applicant or licensee may elect to comply instead with the requirements stated in IEEE Std 279-1971, “Criteria for Protection Systems for Nuclear Power Generating Stations.” For accident monitoring instrumentation isolated from the protection system, the applicable requirements of 10 CFR 50.55a(h) for IEEE Std 279-1971 is Clause 4.7, “Control and Protection System Interaction,” and for IEEE Std 603-1991 are 7.5-4 Revision 6 - August 2016 Clause 5.6.3, “Independence Between Safety Systems and Other Systems,” and Clause 6.3, “Interaction Between the Sense and Command Features and Other Systems.” 3. 10 CFR 50.34(f), “Additional TMI-Related Requirements,” or equivalent TMI Action Plan requirements imposed by orders. The following portions of 10 CFR 50.34(f) apply to accident monitoring instrumentation. 10 CFR 50.34(f)(2)(v), regarding bypass and inoperable status indication. 10 CFR 50.34(f)(2)(xi), regarding direct indication of relief and safety valve position. 10 CFR 50.34(f)(2)(xii), regarding auxiliary feedwater system flow indication (applicable to pressurized water reactors [PWR] only). 10 CFR 50.34(f)(2)(xvii), regarding accident monitoring instrumentation. 10 CFR 50.34(f)(2)(xviii), regarding inadequate core cooling instrumentation. 10 CFR 50.34(f)(2)(xix), regarding instruments for monitoring plant conditions following