Document: NRC Regulatory Guide
Document ID: eb3f5778-b26b-4ba0-9962-f7101bddfff7
Document Type: regulatory_guide
Title: (Rev. 3005)
Source: NRC Regulatory Guide Division 4
Source URL: https://www.nrc.gov/docs/ML0037/ML003739900.pdf
Revision Date: 2023-06
Chapter: 
Section ID: RG-4.8
CFR Part: 
CFR Title: 

Content:
ency, June 1972. mMilk samples should be- collected and analyzed weakly in areas where the calculated dose to a child's thyroid exceeds 15 mrem/yr. Sampling and analysis should be semimonthly in areas where the dose is calculated to be < 15 mrem/yr. For further guidance on milk-child pathway sampling media, frequency of sampling, method of analysis and locations, the user is referred to Regulatory Guide 4.1, "Programs for Monitoring Radioactivity in the Environs of Nuclear PowerPlants." and Regulatory Guide 4.3, "Measurements of Radionuclides in the Environment-Analysis of 1-131 in Milk." r'Where access to green leafy vegetables from private gardens is not possible, n6nedible plants with similar leaf characteristics from the same vicinity may be substituted. If harvest occurs more than once a year, sampling shou;d be perfomed during each dicrete harvest. If harvest occurs continuously, sampling should be monthly. Attention should be paid to including samples of tuberous ana root vegetables. Sampling of feedstuffs and forage may be substituted for meat and poultry However, sampling frequency for su•h media should be monthly. -a, 00 TABLE 2 (Contied) Note: In addition to the dmove guidance for operationa] monitoring, the following material Is supplied for guidance on preoperational programs. Preoperahional Environmental Survailance Pogram A Preoperational Environmental Surveillance Program should be lIntituted 2 years prior to the institution of plant operation. The pu p ca of this pogrlm are: 1. To memure background levels and their variations aong the anticipated critical pethways in the are surrounding the plant 2. To train personnel 3. To evaluate pocedus, equipment, and techniquoe The elemet (Ismpliln media and type of analysis) of both properatloU and operational programs should be essentially the sane. The duration of the preoperational program, for specific meia. poem.ente In the following lable I*ould be followed: Duration Preopmada S pll Ram fr Spaeif