Document: NRC Regulatory Guide
Document ID: cde52d5a-adf9-49be-9d1f-59449dfca895
Document Type: regulatory_guide
Title: TRIAL - Acceptability of Probabilistic Risk Assessment Results for Non-Light Water Reactor Risk-Informed Activities
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML2123/ML21235A008.pdf
Revision Date: 2023-05
Chapter: 
Section ID: RG-1.247
CFR Part: 
CFR Title: 

Content:
------------------------- Table 4.3.16.1-3 MS-B1 through MS-B7 ------------------------ No objection ---------------------------------- Table 4.3.16.1-4 MS-C1 through MS-C7 ------------------------ No objection ---------------------------------- Table 4.3.16.1-5 MS-D1 through MS-D4 ------------------------ No objection ---------------------------------- Table 4.3.16.1-6 MS-E1 through MS-E4 ------------------------ No objection ---------------------------------- Section 4.3.16.2 Section 4.3.16.2.1 Section text ------------------------ No objection ---------------------------------- Section 4.3.16.2.2 Section text ------------------------ No objection ---------------------------------- Section 4.3.16.2.3 Section text ------------------------ No objection ---------------------------------- RG 1.247, Appendix A, Page A-73 Table A-18. Staff Position on ASME/ANS RA-S-1.4-2021, Technical Requirements for Radiological Consequence Analysis Index No. Issue Position Resolution Section 4.3.17 Section text ------------------------ No objection ---------------------------------- Section 4.3.17.1 Section text ------------------------ No objection ---------------------------------- Table 4.3.17.1-1 HLR-RCRE-A through HLR-RCRE-C ------------------------ No objection ---------------------------------- Table 4.3.17.1-2 RCRE-A1 ------------------------ No objection ---------------------------------- RCRE-A2 There is no requirement to identify the radiological inventory, only the release fraction. This is an issue for PRA quality because the consequences are dependent on the quantity of radionuclides released, which depends upon the inventory as well as the release fraction. The inventory at the time of accident initiation can change over the operating cycle because of, for example, the ingrowth of important long-lived fission products such radiocesium or the decay in important short lived fission products such as radioiodine during and after coastdown. Qualification … At a minimum,