Document: NUREG-0800
Document ID: f269e894-c94c-4ccb-b41c-6e39aa74f371
Document Type: srp
Title: HUMAN FACTORS ENGINEERING
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0706/ML070670253.pdf
Revision Date: 2023-06
Chapter: 18
Section ID: 18.0
CFR Part: 
CFR Title: 

Content:
es both equipment and HAs. If the modification contains only HAs (no equipment modifications) and was determined to be in Region I, then the HA should be reviewed using the Level I criteria in Section C.2.1 below. If the modification contains equipment and HAs, then the risk importance of the HA should be evaluated (see item 2 below). Determine the Risk of the HAs. The second review step is to perform a risk- informed screening of the HA portion of the modification in accordance with the review criteria of NUREG-1764. This is done by evaluating both the risk achievement worth (RAW) and the Fussell-Vesely (FV) risk importance measures. HAs will be preliminarily sorted into the three Levels. Perform Qualitative Screen of the HAs. The third risk-screening step is to identify whether there are qualitative factors that should be taken into account when determining the risk importance of the HA. This step may be used to adjust the review level either up or down. This evaluation should be in accordance with the review criteria of NUREG-1764. Integrated Assessment of Human Actions Safety Significance. This step provides guidance on how to integrate the results from Steps 1 through 3 of the screening process for risk-informed licensing basis change requests. 18.0-19 Revision 2 - March 2007 C.1.2 Screening Process for Non-risk-informed Change Requests If the submittal is appropriately non-risk-informed, the NRC will perform the risk screening as follows: Review of Non-Risk-Informed Submittals. In keeping with RG 1.174, a licensee submittal to the NRC may or may not be risk-informed) at the licensee’s option. If it is not risk informed, then the staff may choose to use an Estimated Risk Method or a Generic Method to determine risk in accordance with the review criteria of NUREG-1764. These methods will result in a proposed Level (I, II, or III) for the review. Qualitative screening is then applied to the proposed level to see if it needs to be adjusted. Alternatively, the