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ASTM E2005-05e1

Standard Guide for Benchmark Testing of Reactor Dosimetry in Standard and Reference Neutron Fields

Standard Guide for Benchmark Testing of Reactor Dosimetry in Standard and Reference Neutron Fields E2005-05E01 ASTM|E2005-05E01|en-US Standard Guide for Benchmark Testing of Reactor Dosimetry in Standard and Reference Neutron Fields Standard new BOS Vol. 12.02 Committee E10
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Significance and Use

This guide describes approaches for using neutron fields with well known characteristics to perform calibrations of neutron sensors, to intercompare different methods of dosimetry, and to corroborate procedures used to derive neutron field information from measurements of neutron sensor response.

This guide discusses only selected standard and reference neutron fields which are appropriate for benchmark testing of light-water reactor dosimetry. The Standard Fields considered are neutron source environments that closely approximate the unscattered neutron spectra from 252Cf spontaneous fission and 235U thermal neutron induced fission. These standard fields were chosen for their spectral similarity to the high energy region (E > 2 MeV) of reactor spectra. The various categories of benchmark fields are defined in Terminology E 170.

There are other well known neutron fields that have been designed to mockup special environments, such as pressure vessel mockups in which it is possible to make dosimetry measurements inside of the steel volume of the vessel. When such mockups are suitably characterized they are also referred to as benchmark fields. A variety of these engineering benchmark fields have been developed, or pressed into service, to improve the accuracy of neutron dosimetry measurement techniques. These special benchmark experiments are discussed in Guide E 2006, and in Refs (1)3 and (2).

Scope

1.1 This guide covers facilities and procedures for benchmarking neutron measurements and calculations. Particular sections of the guide discuss: the use of well-characterized benchmark neutron fields to calibrate integral neutron sensors; the use of certified-neutron-fluence standards to calibrate radiometric counting equipment or to determine interlaboratory measurement consistency; development of special benchmark fields to test neutron transport calculations; use of well-known fission spectra to benchmark spectrum-averaged cross sections; and the use of benchmarked data and calculations to determine the uncertainties in derived neutron dosimetry results.

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Details
Book of Standards Volume: 12.02
Developed by Subcommittee: E10.05
Pages: 6
DOI: 10.1520/E2005-05E01
ICS Code: 27.120.10