ASTM E1539-98e1

Standard Guide for Use of Radiation-Sensitive Indicators (Withdrawn 2002)

SCOPE
1.1 This guide covers the use of radiation-sensitive indicators in radiation processing. These indicators may be labels, papers, or inks which undergo a color change or become colored when exposed to ionizing radiation.  
1.2 The purpose of these indicators is to determine visually whether or not a product has been irradiated, rather than to measure different dose levels.
1.3 Such materials are not dosimeters and should not be used as a substitute for proper dosimetry. Information about dosimetry systems for ionizing radiation is provided in other ASTM documents (see Guide E1261).
1.4 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.

General Information

• Status: Withdrawn
• Publication Date: 09-Jun-1999
• ICS: 17.240 - Radiation measurements
• Technical Committee: E10 - Nuclear Technology and Applications

Standards Content (Sample)

e1
Designation: E 1539 – 98 An American National Standard
AMERICAN SOCIETY FOR TESTING AND MATERIALS
100 Barr Harbor Dr., West Conshohocken, PA 19428
Reprinted from the Annual Book of ASTM Standards. Copyright ASTM
Standard Guide for
1
Use of Radiation-Sensitive Indicators
This standard is issued under the fixed designation E 1539; 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 (e) indicates an editorial change since the last revision or reapproval.
1
e NOTE—Footnote 1 was editorially altered in June 1999.
1. Scope 3.1.3 radiation-sensitive indicators—materials such as
coated or impregnated adhesive-backed substrates, inks, coat-
1.1 This guide covers the use of radiation-sensitive indica-
ings or other materials which may be affixed to or printed on
tors in radiation processing. These indicators may be labels,
the process loads and which undergo a visual change when
papers, inks or packaging materials which undergo a color
exposed to ionizing radiation.
change or become colored when exposed to ionizing radia-
2
3.2 Definitions of other terms used in this standard that
tion.
pertain to radiation measurement and dosimetry may be found
1.2 The purpose of these indicators is to determine visually
in Terminology Standard E 170. Definitions in E 170 are
whether or not a product has been irradiated, rather than to
compatible with ICRU 33; that document, therefore, may be
measure different dose levels.
used as an alternative reference.
1.3 Such materials are not dosimeters and should not be
used as a substitute for proper dosimetry. Information about
4. Significance and Use
dosimetry systems for ionizing radiation is provided in other
4.1 Radition-sensitive indicators may be used to show that
ASTM documents (see Guide E 1261).
products have been exposed to a radiation source. They should
1.4 This standard does not purport to address all of the
be used only to provide a qualitative indication of radiation
safety concerns, if any, associated with its use. It is the
exposure and may be used to distinguish processed loads from
responsibility of the user of this standard to establish appro-
unprocessed loads.
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use.
NOTE 1—The use of such materials does not eliminate the need for
other process-control procedures, such as quantitative dosimetry or the
2. Referenced Documents
controlled segregation of irradiated from nonirradiated products.
2.1 ASTM Standards:
5. Selection of Indicators
E 170 Standard Terminology Relating to Radiation Mea-
3
5.1 Radiation-sensitive indicators should be selected that
surements and Dosimetry
are convenient to use, will remain attached to the product, and
E 1261 Standard Guide for Selection and Calibration of
3
can withstand the stresses of the irradiation process.
Dosimetry Systems for Radiation Processing
5.2 Indicators should be selected that have a response
3. Terminology
appropriate for the ranges of dose, dose rate, radiation energy
2
and environmental conditions experienced by the product.
3.1 Definitions:
5.3 The suitability of such materials shall be determined
3.1.1 dosimetry system—a system used for determining
under the conditions of use from the time of purchase until
absorbed dose, consisting of dosimeters, measurement instru-
their use or expiration of their shelf life.
ments and their associated reference standards, and procedures
5.4 Indicators used for electron beam processing should be
for the system’s use.
thin enough to avoid significant change of the dose
...