Document: NUREG-0800
Document ID: 0813f466-de60-43e2-b553-09bee4be75d9
Document Type: srp
Title: LOCAL METEOROLOGY
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0520/ML052070229.pdf
Revision Date: 2023-06
Chapter: 2
Section ID: 2.3.2
CFR Part: 
CFR Title: 

Content:
d to verify that meteorological data and analyses remain valid and that the facility's design specifications are consistent with these data. OL and COL reviews include a determination that the content and intent of technical specifications related to continued meteorological surveillance are acceptable and consider any unique meteorological conditions identified.17 Section 2.3 of the SAR is reviewed for content based on the specifications outlined in Regulatory Guide 1.70. 1. The summaries listed in Section 2.3.2.1 of Regulatory Guide 1.70 are reviewed for completeness and adequacy of basic data. The wind and atmospheric stability data should be based on onsite data, since airflow and vertical temperature structure can vary substantially from one location to another and are inputs to the assessment of atmospheric diffusion conditions at the site. The other summaries should be based on nearby representative stations with long periods of record since the locally measured extremes in intensity and frequency are compared to design basis values presented in the safety analysis report or are used by other branches to determine whether these meteorological conditions are limiting conditions for design and emergency procedures. When offsite data are used, a determination is made of how well the data represent site conditions and whether more representative data are available. National Oceanic and Atmospheric Administration (NOAA) State meteorological summaries, local climatological data, and NOAA Environmental Data Service summaries pertinent to the site are used by the reviewer to evaluate the representativeness of whether the data represent stations and periods of record. The reviewer should be familiar with all 18 primary meteorological data collection locations. 2. The reviewer ensures that all topographic maps and topographic cross sections presented by the applicant are legible and well labeled so that the information needed during the review can be readily extracted.