Document: NRC Regulatory Guide
Document ID: f0baf50b-5bb7-4783-b2f9-9586e09c97e1
Document Type: regulatory_guide
Title: Preparation of Environmental Reports for Nuclear Power Stations + HISTORY - HISTORY 02/2017 – DG-4026 , Proposed Revision 3 09/2014 – Periodic Review of Revision 2 – Revise (Rev. 3)
Source: NRC Regulatory Guide Division 4
Source URL: https://www.nrc.gov/docs/ML1611/ML16116A068.pdf
Revision Date: 2023-06
Chapter: 
Section ID: RG-4.2
CFR Part: 
CFR Title: 

Content:
acent to the site, such as an operating or shutdown nuclear plant or other nuclear fuel-cycle facility. For multi-unit or multi-modular reactors, the applicant should provide estimated annual doses to construction workers in a new unit or module construction area, as a result of radiation from onsite radiation sources from the existing operating plant(s). Examples of typical onsite radiation sources include the turbine systems (for boiling water reactors), stored radioactive wastes, the independent spent fuel storage installation, auxiliary and reactor buildings, and radioactive effluents (i.e., direct radiation from the gaseous radioactive effluent plume). The ER should be consistent with the applicable sections of the final safety analysis report (FSAR), especially for the location of the maximum exposure. Sections 12.3 and 12.4 of the Standard Review Plan (SRP), NUREG-0800 (Ref. 57), require an assessment of dose to construction workers on a facility adjacent to an existing nuclear unit or units. The applicant should provide the annual person-rem (or person-Sievert) doses associated with such construction areas, providing detailed information as to the estimated number of construction workers and estimated annual doses (from direct, gaseous, and liquid sources) to these workers, including bases, models, assumptions, and input data. The applicant should also describe any additional dose-reducing measures taken as a result of the dose assessment process for specific functions or activities and indicate DG-4026, Page 76 whether and, if so, how the applicant has followed the guidance in the most recent version of RG 8.19 (Ref. 58), “Occupational Radiation Dose Assessment in Light-Water Reactor Power Plants -- Design Stage Man-Rem Estimates.” Conversely, if the applicant has not followed this guidance, then the specific acceptable alternative methods used should be described in sufficient detail. The ER should use the same units of measure as used in the FSAR. The