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Significance and Use
4.1 The purpose of this standard is to provide the user information and guidance for selecting and using instrumentation that will provide measurement results that can be compared to criteria for unrestricted use.
4.2 Use of this standard will provide greater assurance that the measurements obtained will be technically and administratively sufficient for making decisions regarding completion of decontamination and/or demolition/removal activities.
4.3 Use of this standard will provide greater assurance that the measurements obtained will be technically and administratively sufficient to meet all applicable regulatory requirements for unrestricted release of a component for recycle or reuse, or for unrestricted release of a remaining surface or area.
1.1 This standard provides recommendations on the selection and use of portable instrumentation that is responsive to levels of radiation that are close to natural background. These instruments are employed to detect the presence of residual radioactivity that is at, or below, the criteria for release from further regulatory control of a component to be salvaged or reused, or a surface remaining at the conclusion of decontamination and/or decommissioning.
1.2 The choice of these instruments, their operating characteristics and the protocols by which they are calibrated and used will provide adequate assurance that the measurements of the residual radioactivity meet the requirements established for release from further regulatory control.
1.3 This standard is applicable to the in situ measurement of radioactive emissions that include:
1.3.2 beta (electrons)
1.3.4 characteristic x-rays
1.3.5 The measurement of neutron emissions is not included as part of this standard.
1.4 This standard dose not address instrumentation used to assess residual radioactivity levels contained in air samples, surface contamination smears, bulk material removals, or half/whole body personnel monitors.
1.5 This standard does not address records retention requirements for calibration, maintenance, etc. as these topics are considered in several of the referenced documents.
1.6 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
C998 Practice for Sampling Surface Soil for Radionuclides
C999 Practice for Soil Sample Preparation for the Determination of Radionuclides
C1000 Test Method for Radiochemical Determination of Uranium Isotopes in Soil by Alpha Spectrometry
C1133 Test Method for Nondestructive Assay of Special Nuclear Material in Low-Density Scrap and Waste by Segmented Passive Gamma-Ray Scanning
C1215 Guide for Preparing and Interpreting Precision and Bias Statements in Test Method Standards Used in the Nuclear Industry
E170 Terminology Relating to Radiation Measurements and Dosimetry
E181 Test Methods for Detector Calibration and Analysis of Radionuclides
International Organization for Standardization (ISO)ISO-4037-4 : 2004 X and Gamma Reference Radiations for Calibrating Dosimeters and Dose-rate Meters and for Determining their Response as a Function of Photon Energy, International Organization for Standardization, 1979 Available from ANSI Sales Department, 1430 Broadway, New York, NY 10018. ISO-6980-2 : 2005 Nuclear energy - Reference beta particle radiation - Part 2: Calibration fundamentals related to basic quantities characterizing the radiation field ISO 8769-2 : 1996 Reference sources for the calibration of surface contamination monitors-Part 2: Electrons of energy less than 0.15 MeV and photons of energy less than 1.5 MeV ISO-8769 Reference Sources for the Calibration of Surface Contamination Monitors - Beta Emitters (Maximum Beta Energy Greater than 0.15 MeV) and Alpha Emitters, International Organization for Standardization, 1988
ANSI StandardsANSI N323AB American National Standard for Radiation Protection Instrumentation Test and Calibration, Portable Survey Instrumentation Available from American National Standards Institute (ANSI), 25 W. 43rd St., 4th Floor, New York, NY 10036, http://www.ansi.org. ANSI N42.17A American National Standard for Performance Specifications for Health Physics Instrumentation-Portable Instrumentation for Use in Normal Environmental Conditions ANSI N42.17C American National Standard for Performance Specifications for Health Physics Instrumentation-Portable Instrumentation for Use in Extreme Environmental Conditions
National Council on Radiation Protection and MeasurementsNCRP Report No. 112 Calibration of Survey Instruments Used in Radiation Protection for the Assessment of Ionizing Radiation Fields and Radioactive Surface Contamination, National Council on Radiation Protection and Measurements, December 1991 NCRP Report No. 57 Instrumentation and Monitoring Methods for Radiation Protection, National Council on Radiation Protection and Measurements, May 1978 National Council on Radiation Protection and Measurement, 7910 Wodmont Ave., Bethesda, MD 20814 NCRP Report No. 58 A Handbook of Radioactivity Measurement Procedures, National Council on Radiation Protection and Measurements, 2nd Ed. February 1985
ICS Number Code 17.240 (Radiation measurements)
UNSPSC Code 20121921(Radiation survey meter)
ASTM E1893-15, Standard Guide for Selection and Use of Portable Radiological Survey Instruments for Performing In Situ Radiological Assessments to Support Unrestricted Release from Further Regulatory Controls, ASTM International, West Conshohocken, PA, 2015, www.astm.orgBack to Top