Document: NRC Regulatory Guide
Document ID: f90c4bd2-d0e9-4015-81fc-f2cd85a8f58b
Document Type: regulatory_guide
Title: Guidance to Operators at the Controls and to Senior Operators in the Control Room of a Nuclear Power Unit (Rev. 3)
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML0802/ML080220459.pdf
Revision Date: 2023-06
Chapter: 
Section ID: RG-1.114
CFR Part: 
CFR Title: 

Content:
shift, and should include, as a minimum, a definition of proper relief (e.g., what information is required to be passed on and acknowledged between the two operators). 1.5 A single operator should not assume responsibility as the operator at the controls for more than one nuclear power unit at the same time. This is one of the minimum requirements per shift for onsite staffing of nuclear power units by licensed operators contained in 10 CFR 50.54(m)(2)(i). DG-1194, Page 4 2. Senior Operator in the Control Room 2.1 A designated senior operator, as defined in 10 CFR 55.4, should be present in the control room to meet the requirements of 10 CFR 50.54(m)(2)(iii). 2.2 The senior operator in the control room should spend most of the time in that portion of the control room where there is direct and prompt access to information on current unit conditions and where the senior operator can directly supervise and communicate with the operator at the controls. 2.3 The senior operator should have the flexibility to move periodically for a brief time to other parts of the control room, as long as the senior operator is at all times within the control room vital area and meets either of the following conditions. a. The senior operator is in sight of or in the audible range of the reactor operator at the controls. b. The senior operator is in the audible range of the control room annunciators. 2.4 Administrative procedures should be established that define and outline (preferably with sketches) the specific area within the control room (Section 2.2, above) where the senior operator normally should remain while performing designated duties. 2.5 Before assuming responsibility as senior operator in the control room, the relief senior operator should be properly briefed on the unit’s (or units’) status. Administrative procedures should describe what is required to ensure the proper transfer of responsibilities occurs when a senior operator on duty in the control room is relieved