Document: NUREG-1555
Document ID: d62aa925-a135-4ee2-ba79-f6e4292edb17
Document Type: esrp
Title: RADIOLOGICAL MONITORING
Source: NUREG-1555
Source URL: https://www.nrc.gov/reading-rm/doc-collections/nuregs/staff/sr1555/initial/
Revision Date: 2007-10
Chapter: 6
Section ID: 6.2
CFR Part: 
CFR Title: 

Content:
astes have been discharged At time of harvest(k) Gamma isotopic analysis on edible portion. I-131 analysis on green leafy vegetables 3 samples of broadleaf vegetation grown nearest an offsite location of the highest calculated annual average ground-level D/Q if milk sampling is not performed Monthly when available 1 sample of each of the similar vegetation grown 15-30 km distant in the least prevalent wind direction if milk sampling is not performed Monthly when available (a) The number, media, frequency, and location of sampling may vary from site to site. It is recognized that, at times, it may not be possible or practical to obtain samples of the media of choice at the most desired location or time. In these instances, suitable alternative media and locations may be chosen for the particular pathway in question and submitted for acceptance. Actual locations (distance and direction) from the site shall be provided. Refer to Regulatory Guide 4.1, “Programs for Monitoring Radioactivity in the Environs of Nuclear Power Plants.” (b) Particulate sample filters should be analyzed for gross beta 24 hours or more after sampling to allow for radon and thoron daughter decay. If gross beta activity in air or water is greater than 10 times the mean of control samples for any medium, gamma isotopic analysis should be performed on the individual samples. (c) Gamma isotopic analysis means the identification and quantification of gamma-emitting radionuclides that may be attributable to the effluents from the facility. (d) Canisters for the collection of radioiodine in air are subject to channeling. These devices should be carefully checked before operation in the field, or several should be mounted in series to prevent loss of iodine. (e) The purpose of this sample is to obtain background information. If it is not practical to establish control locations in accordance with the distance and wind direction criteria, other sites that provide valid background data may be