ASTM C859-10b

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it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation:C859–10a Designation:C859–10b
Standard Terminology Relating to
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Nuclear Materials
This standard is issued under the fixed designation C859; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope
1.1 This terminology standard contains terms, definitions, descriptions of terms, nomenclature, and explanations of acronyms
and symbols specifically associated with standards under the jurisdiction of Committee C26 on Nuclear Fuel Cycle. This
terminologymayalsobeapplicabletodocumentsnotunderthejurisdictionofCommitteeC26,inwhichcasethisterminologymay
be referenced in those documents.
2. Terminology
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absorbed dose, D, [L T ], n—absorbed dose is the mean energy imparted by ionizing radiation to a unit mass of specified
material.
DISCUSSION—The SI unit for absorbed dose is the gray (Gy), defined as 1 J/kg.
abundance sensitivity, n—in methods of chemical analysis, the ratio of the ion beam intensity of the major isotope, M,tothe
background current at the adjacent mass positions.
ion current at mass M
Abundance sensitivity 5 (1)
ion current at M 6 1
–1
activity, A, [T ], n—the measure of the rate of spontaneous nuclear transformations of a radioactive material. The SI unit for
activity is the becquerel (Bq), defined as one transformation per second. The original unit for activity was the curie (Ci), defined
10
as 3.7 3 10 transformations per second.
alpha radiation, n—is the spontaneous emission of an alpha particle, composed of two protons and two neutrons with a positive
charge of plus two, during the nuclear transformation process.
DISCUSSION—An alpha particle is the same as a helium atom with no electrons.
alteration, n—any change in the form, state, or properties of materials.
analyte, n—in method of chemical analysis, a sample component whose presence and concentration is of interest.
–1
becquerel (Bq), [T ], n—the SI unit of measure for activity, defined as one transformation per second.
beta radiation, n—an electron that was generated in the atomic nucleus during decay and has a negative charge of one.
canyon, n—in the nuclear industry, a long, narrow, remotely operated, radiological facility.
DISCUSSION—A large, heavily-shielded facility where nuclear material is processed or stored.
continuing calibration blank check solution (CCB)—in methods of chemical analysis, a standard solution that has no analyte
and is used to verify blank response and freedom from carryover.
continuing calibration verification check solution (CCV)—in methods of chemical analysis, a standard solution (or set of
solutions) used to verify freedom from excessive instrument drift; the concentration is to be near the midrange of a linear curve.
crushed glass, n—in a glass leach test, small particles of glass produced by mechanically fracturing larger pieces of glass.
–1 10
curie (Ci), [T ]—the original unit of measure for activity, defined as 3.7 3 10 transformations per second.
determination, n—the process of carrying out a series of operations specified in the test method whereby a single value is
obtained.
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dose equivalent, [L T ], n—a measure of the biological effects of radiation dose from all types of radiation expressed on a
common scale.
DISCUSSION—The SI unit for dose equivalent is the sievert (Sv), which is equal to 100 rem (specialized unit for human dose equivalent). Radiation
dose equivalent is often expressed in terms of microsieverts (µSv) or millirem (mrem).
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This terminology is under the jurisdiction of ASTM Committee C26 on Nuclear Fuel Cycle and is the direct responsibility of Subcommittee C26.01 on Editorial and
Terminology.
Current edition approvedAug.Nov. 1, 2010. PublishedAugustDecember 2010. Originally approved in 1977. Last previous edition approved in 2010 as C859 – 10A. DOI:
10.1520/C0859-10AB.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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C859–10b
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dose rate, [L T ], n—a quantity of absorbed dose received in a given unit of time.
electro-mechanical manipulator (E/M), n—a remotely operated lifting device used to handle heavy equipment in a hot cell.
DISCUSSION—Each joint of the E/M is operated by an electric motor or electric actuator. The manipulator is usually mounted on a crane bridg
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