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ASTM E844-09

Historical Revision

Standard Guide for Sensor Set Design and Irradiation for Reactor Surveillance, E 706 (IIC)

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1.1 This guide covers the selection, design, irradiation, post-irradiation handling, and quality control of neutron dosimeters (sensors), thermal neutron shields, and capsules for reactor surveillance neutron dosimetry.

1.2 The values stated in SI units are to be regarded as standard. Values in parentheses are for information only.

1.3 This standard does not purport to address all of the safety problems, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

In neutron dosimetry, a fission or non-fission dosimeter, or combination of dosimeters, can be used for determining a fluence-rate, fluence, or neutron spectrum, or both, in nuclear reactors. Each dosimeter is sensitive to a specific energy range, and, if desired, increased accuracy in a fluence-rate spectrum can be achieved by the use of several dosimeters each covering specific neutron energy ranges.

A wide variety of detector materials is used for various purposes. Many of these substances overlap in the energy of the neutrons which they will detect, but many different materials are used for a variety of reasons. These reasons include available analysis equipment, different cross sections for different fluence-rate levels and spectra, preferred chemical or physical properties, and, in the case of radiometric dosimeters, varying requirements for different half-life isotopes, possible interfering activities, and chemical separation requirements.

SDO ASTM: ASTM International
Document Number E844
Publication Date June 1, 2009
Language en - English
Page Count 8
Revision Level 09
Supercedes
Committee E10.05
Publish Date Document Id Type View
June 1, 2018 E0844-18 Revision
June 1, 2014 E0844-09R14E02 Revision
June 1, 2009 E0844-09 Revision
Feb. 10, 2003 E0844-03 Revision
June 10, 1997 E0844-97 Revision
June 1, 2014 E0844-09R14E01 Reaffirmation