Document: NUREG-0800
Document ID: 9f9f8fe1-9b66-460c-b928-6d1644a23c4c
Document Type: srp
Title: RADIATION PROTECTION - INSPECTIONS, TESTS, ANALYSES, AND
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0705/ML070550022.pdf
Revision Date: 2023-06
Chapter: 14
Section ID: 14.3.8
CFR Part: 
CFR Title: 

Content:
s (e.g., the ventilation system and airborne monitoring system designs). The DAC should require the COL applicant to calculate radiation levels and airborne radioactivity levels within the plant rooms and areas to verify the adequacy of these design features during plant construction (concurrently with the verification of the ITAAC). The plant rooms and areas to which the DAC apply may be given in figures in Tier 1. The appropriate section of DCD Tier 2, Chapter 12, should include detailed supporting information for the DAC. The criteria in Tier 1 should ensure that the radiation shielding design (as provided by the plant structures or by permanent or temporary shielding included in the design) is adequate so that the maximum radiation levels in plant areas are commensurate with the areas’ access requirements. This will allow radiation exposures to plant personnel to be maintained ALARA during normal plant operations and maintenance. Tier 1 should ensure that adequate shielding is provided for those plant areas that may require occupancy to permit an operator to aid in the mitigation of or the recovery from an accident. Tier 1 should ensure that the contribution of gamma shine to the radiation dose (particularly from the turbine building) to a member of the public (off site) will be a small fraction of the U.S. Environmental Protection Agency’s dose limits in found at 40 CFR Part 190. The criteria in Tier 1 should ensure that the plant provides adequate containment and ventilation flow rates to control the concentrations of airborne radioactivity to levels commensurate with the access requirements of areas in the plant. Tier 1 should ensure that once the concentrations of airborne radioactivity are determined, the required airborne monitors are placed in the appropriate locations in the plant. Technical Rationale The technical rationale for application of these acceptance criteria to the areas of review addressed by this SRP section is discussed in the following