Document: NUREG-0800
Document ID: 7bbfa5be-36ba-4273-8f24-038130581ae5
Document Type: srp
Title: SHORT-TERM DISPERSION ESTIMATES FOR ACCIDENTAL ATMOSPHERIC RELEASES
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0523/ML052340583.pdf
Revision Date: 2023-06
Chapter: 2
Section ID: 2.3.4
CFR Part: 
CFR Title: 

Content:
ations and compliance with them Is not required. The standard review plan sections are keyed to the Standard Format and Content of Safety Analysis Reports for Nuclear Power Plants. Not all sections of the Standard Format have a corresponding review plan. Published standard review plans will be revised periodically. as appropriate, to accommodate comments and to reflect new Informa- tion and experience. Comments and suggestions for Improvement will be considered'and should be sent to the U.S. Nuclear Regulatory Commission. Office of Nuclear Reactor Regulation. Washington, D.C. 2055 A. 10 CFR Part 50, Appendix A, General Design Criterion 19, "Control Room" (Ref. 1), with respect to the meteorological considerations used to evaluate the personnel radiation exposures inside the control room during design basis accident conditions. B. 10 CFR Part 100, §100.11(a) (Ref. 2), with respect to the meteorological considerations used in the evaluation to determine an acceptable exclu- sion area and low population zone. Regulatory Guides that provide information, recommendations and guidance and in general describe a basis acceptable to the staff to implement the requirements of General Design Criterion 19 and 10 CFR Part 100 include Regulatory Guides 1.5, 1.23, 1.24, 1.25, 1.77, 1.78, 1.95, and 1.145 (Refs. 3, 4, 5, 6, 7, 8, 9, and 10). The applicant's diffusion estimates should reasonably reflect staff positions and state-of-the-art atmospheric diffusion knowledge. Specifically the following information is required: 1. A description of the atmospheric dispersion models used to calculate relative concentrations in air resulting from accidental releases of radioactive and hazardous gases to the atmosphere. The models should be documented in detail and substantiated within the limits of the model so that the staff can evaluate their appropriateness to site, plant, and release characteristics. 2. Meteorological data used for the evaluation (as input to the dispersion models) which