Document: NUREG-0800
Document ID: d563bf0f-7b24-4ff5-99a2-4f822eb86bd9
Document Type: srp
Title: INTERLOCK SYSTEMS IMPORTANT TO SAFETY
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0523/ML052360612.pdf
Revision Date: 2023-06
Chapter: 7
Section ID: 7.6
CFR Part: 
CFR Title: 

Content:
tainment Heat Removal." 9. General Design Criterion 41, "Containment Atmosphere Cleanup." 10. General Design Criterion 44, "Cooling Water." 7.6-2 Rev. 2 - July 1981 Regulatory Guides, Branch Technical Positions and industry standards that provide information, recommendations and guidance and in general describes a basis acceptable to the staff that may be used to implement the requirements of the Commission regulations identified above are given in SRP Section 7.1, Table 7-1 (Ref. 1).and SRP Appendix 7-A (Ref. 2). In addition, Task Action Plan items as identified in SRP Section 7.1, Table 7-2 (Ref. 3) are also implemented to meet the above regulations. 1II. REVIEW PROCEDURES This subsection describes the general procedures to be followed in reviewing the interlock systems important to safety. The bases for the evaluation of conformance to the requirements of the acceptance criteria and guidelines may be based upon referenced approved designs. The category of referenced approved designs include topical reports, standard design approvals, and designs of systems which have been previously reviewed and approved by the Staff. If any aspect of a design is not identical to that which is refer- enced, an evaluation must be made to address the adequacy of the differences and the conclusions included in the safety evaluation report. Review guidance for conformance to the GDC are provided in Appendix A of Section 7.1 (Ref. 4). The review guidance includes references to the guide- lines in regulatory guides and industry codes and standards where applicable. An audit review of the interlock systems should be made to confirm that the systems conform to the guidelines to the extent necessary to support the conclusions of conformance to the regulations. The interlock systems important to safety are reviewed as follows: 1. The interlocks to prevent overpressurization of low pressure systems are reviewed. Guidance for the'review of this area is provided in BTP ICSB 3, "Isolation of