Document: NUREG-0800
Document ID: d7a2bd90-7093-4d73-931e-05265eda3d76
Document Type: srp
Title: HUMAN FACTORS ENGINEERING (Tier 1)
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0520/ML052070669.pdf
Revision Date: 2023-06
Chapter: 14
Section ID: 14.3.9
CFR Part: 
CFR Title: 

Content:
cesses specified in Tier 2. Therefore, for the evolutionary designs, the staff designated selected information in DCD Tier 2 Chapter 18 that, if considered for a change, requires NRC approval prior to implementation. This information is known as Tier 2* information (see Appendix A to SRP Section 14.3 for instructions on designating information in Tier 2 as Tier 2*). Similar information should be considered on a design-specific basis for all standard designs. However, the staff allowed some of the Tier 2* designation to expire after first full power operation of the facility, when the detailed design was complete and the facility performance characteristics were known from the startup and power ascension test programs. The NRC bears the final responsibility for designating which material in Tier 2 is Tier 2*. DRAFT Rev. 0 - April 1996 14.3.9-4 Minimum Inventory of Displays, Alarms and Controls The minimum inventory of displays, controls, and alarms should be developed through a task analysis of the operator actions necessary to carry out the Generic Technical Guidelines (e.g., ERGs, EPGs) and PRA critical actions. The staff's evaluation of the resulting minimum inventory encompasses a multi-disciplinary effort consisting of human factors, I&C, PRA, and plant, reactor, and electrical system engineering. The criteria used to determine acceptability of the inventory includes assuring that: (1) the scope of these items in the Generic Technical Guidelines and PRA effort are adequately considered, (2) the task analysis is detailed and comprehensive, (3) RG 1.97, category I variables for accident monitoring are included, and (4) important system displays and controls described in Tier 1 system design descriptions necessary for transient mitigation are included. The minimum inventory list for the main control room and the controls, displays and alarms required on systems to remotely shutdown the reactor should be included in Tier 1. The items required for operation of the