Document: NRC Regulatory Guide
Document ID: 22ccfd5e-c5d8-4615-a02c-32369aa9f533
Document Type: regulatory_guide
Title: Acceptability of Probabilistic Risk Assessment Results for Risk-Informed Activities (Rev. 3)
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML1930/ML19308B636.pdf
Revision Date: 2023-06
Chapter: 
Section ID: RG-1.200
CFR Part: 
CFR Title: 

Content:
------------ AS-C1 thru AS-C3 -------------------- No objection -------------------- 2-2.3 – SC 2-2.3.1 The HLR and associated SRs are written for CDF and not LERF; therefore, references to LERF are not appropriate. Clarification (a) overall success criteria are defined (i.e., core damage and large early release) Table 2-2.3-1 -------------------- No objection -------------------- Tables 2-2.3-2(a) thru 2-2.3-4(c) SC-A1 thru SC-A6 -------------------- Note: SC-A3 was deleted in Addendum B. No objection -------------------- SC-B1 thru SC-B5 -------------------- No objection -------------------- SC-C1 thru SC-C3 -------------------- No objection -------------------- DG-1362, Appendix A, Page A-11 Table A-2. Staff Position on ASME/ANS RA-Sa-2009 Part 2, Technical and Peer Review Requirements for At-Power Internal Events Index No Issue Position Resolution 2-2.4 – SY 2-2.4.1 -------------------- No objection -------------------- Table 2-2.4-1 -------------------- No objection -------------------- Tables 2-2.4-2(a) thru 2-2.4-4(c) SY-A1 thru SY-A23 -------------------- No objection -------------------- SY-A24 There are no commonly used analysis methods for recovery in the sense of repair, other than use of actuarial data. Clarification …is justified through an adequate analysis or examination of data collected in accordance with DA-C15 and estimated in accordance with DA-D9. (See DA- C15.) SY-B1 thru SY-B13, SY- B15 -------------------- No objection -------------------- SY-B14 Containment vent and failure can cause more than NPSH problems (e.g., harsh environments). Clarification Examples of degraded environments include: (h) harsh environments induced by containment venting, failure of the containment venting ducts, or failure of the containment boundary that may occur prior to the onset of core damage SY-C1 thru SY-C3 -------------------- No objection -------------------- 2-2.5 – HR 2-2.5.1 -------------------- No objection -------------------- Table 2-2.5-1