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:
REVIEW RESPONSIBILITIES Primary - Accident Evaluation Branch (AEB) Secondary- None I. AREAS OF REVIEW Information is presented by the applicant and reviewed by the staff concerning atmospheric dispersion estimates for postulated accidental releases of effluents to the atmosphere. The review covers the following specific areas: 1. Atmospheric transport and diffusion models to calculate relative concen- trations for postulated accidental radioactive and hazardous airborne releases. 2. Meteorological data summaries used as input to diffusion models. 3. Derivation of diffusion parameters. 4. Probability distributions of relative concentrations. 5. Determination of relative concentrations used for assessment of conse- quences of postulated radioactive atmospheric releases for design basis accidents and for other accidents, and of onsite and offsite hazardous airborne releases. II. ACCEPTANCE CRITERIA The applicant should provide conservative estimates of atmospheric transport and diffusion conditions at appropriate distances from the source for postulated accidental releases of radioactive and hazardous materials to the atmosphere. The plant should be considered as both a source and a receptor. The information is necessary to demonstrate compliance with the following regulations: Rev. 1 - July 1981 USNRC STANDARD REVIEW PLAN Standard review plans are prepared for the guidance of the Office of Nuclear Reactor Regulation staff responsible for the review of applications to construct and operate nuclear power plants. These documents are made available to the public as part of the Commission's policy to inform the nuclear Industry and the general public of regulatory procedures and policies. Standard review plans are not substitutes for regulatory guides or the Commission's regulations 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