Document: NRC Regulatory Guide
Document ID: 5f67f910-de21-4629-9b03-b5a9f09c3c66
Document Type: regulatory_guide
Title: 
Source: NRC Regulatory Guide Division 4
Source URL: https://www.nrc.gov/docs/ML0037/ML003739544.pdf
Revision Date: 2023-06
Chapter: 
Section ID: RG-4.6
CFR Part: 
CFR Title: 

Content:
ve been developed for analyzing a medium such as milk without prior ashing or concentration of the sample, most methods for analyzing biological and environmental samples require some degree of sample preparation prior to analysis. This USAEC REGULATORY GUIDES Copies of publ"shed guides may be obtained by request Indicating the divisions desired to the US. Atomic Energy Commission. Washington. DC. 20648, Regulatory Guidee e Issued to describe end make ellable to the public Attention: Director of Regulatory Standards. Comments end suggestions for methods accpabple to the AEC Regulatory Vetaff of implam entIng specific perts Of Improvemaents in theae guides are encouraged and should be sent to the Secetr the Commission's regulations, to delineate techniques used by the staff In of the Commision, US. Atomic Energy Commission. Washington. D.. 20645. eseluating specific problems or postulated accidents, or to provide guildan to Attention Chief, Public Proceedings Staff. applicants. Regulatory Guldes we not substitutes for regulations and compliance with them Is not required. Methods and solutions different from th at out In The guldes re Issued In the following ten broad divlsions: the guides will be acceptsble if they povide a basle for the findings requisite to the sasuance or continuance of a permit or license by the Commlssion. I1. Power Reecitors 6. Products 2. Research and Test Reectors 7. Transportation 3. Fueb and Materials Facilities 8. Occuptional Health Publishd guides will be evisd periodicelly, as ,ppropriate. to sacommodate 4. EnvironmetalandSitinng 9. Antitrust Review comments and to reflect new information or experience. 5. Materials and Plant Protection 10. General usually implies wet or dry ashing of the sample. If Sr-90 alone is to be determined, the use of Sr-85 tracer for radiochemical yield determination is recommended, but if both Sr-90 and Sr-89 analyses are required, Sr-85 tracer should not be used because it interferes with the Sr-89