Document: NUREG-0800
Document ID: 1df526d9-2ae0-4da2-b936-2e24b038ca8c
Document Type: srp
Title: DIVERSE INSTRUMENTATION AND CONTROL SYSTEMS
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0706/ML070650035.pdf
Revision Date: 2023-06
Chapter: 7
Section ID: 7.8
CFR Part: 
CFR Title: 

Content:
ntrol room. They are to provide manual, system-level actuation of critical safety functions and monitoring of parameters that support the safety functions. • Diverse actuation systems (DAS) that are provided solely for the purpose of meeting the NRC position on D3. DAS and ATWS mitigation system functions may be combined into a single system. The reactor trip system (RTS), engineered safety features actuation system (ESFAS), control system, or other I&C systems may perform diverse functions credited in meeting the NRC D3 position. The functions of these systems are outside the scope of this section. These functions should meet the criteria applicable to the systems as a whole and should be consistent with the assumption of the applicant/licensee’s D3 analysis. The requirements for these systems and the staff’s review are found in the SRP sections for the individual systems. 2. Inspections, Tests, Analyses, and Acceptance Criteria (ITAAC). For design certification (DC) and combined license (COL) reviews, the staff reviews the applicant's proposed ITAAC associated with the structures, systems, and components (SSCs) related to this SRP section in accordance with SRP Section 14.3, "Inspections, Tests, Analyses, and Acceptance Criteria." The staff recognizes that the review of ITAAC cannot be completed until after the rest of this portion of the application has been reviewed against acceptance criteria contained in this SRP section. Furthermore, the staff reviews the ITAAC to ensure that all SSCs in this area of review are identified and addressed as appropriate in accordance with SRP Section 14.3. 3. COL Action Items and Certification Requirements and Restrictions. For a DC application, the review will also address COL action items and requirements and restrictions (e.g., interface requirements and site parameters). For a COL application referencing a DC, a COL applicant must address COL action items (referred to as COL license information in certain DCs) included