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ASTM ISO/ASTM 52116 Document Information:
Title
Standard Practice for Dosimetry for a Self-Contained Dry-Storage Gamma-Ray Irradiator
ASTM International
Publication Date:
Jun 21, 2002
Scope:
This practice outlines dosimetric procedures to be followed with
self-contained dry-storage
gamma-ray irradiators. If followed, these procedures will help to
ensure that calibration and
testing will be carried out with acceptable precision and accuracy and
that the samples processed
with ionizing radiation from gamma rays in a self-contained
dry-storage irradiator receive absorbed
doses within a predetermined range.
This practice covers dosimetry in the use of dry-storage gamma-ray
irradiators, namely
self-contained dry-storage 137Cs or 60Co irradiators (shielded
freestanding irradiators). It does
not cover underwater pool sources, panoramic gamma-ray sources such as
those raised mechanically or
pneumatically to irradiate isotropically into a room or through a
collimator, nor does it cover
self-contained bremsstrahlung x-ray units.
The absorbed dose range for the use of the dry-storage self-contained
gamma-ray irradiators covered
by this practice is typically 1 to 10(5); Gy, depending on the
application. The absorbed-dose
rate range typically is from 10⊃−2; to 10³ Gy/min.
This practice describes general procedures applicable to all
self-contained dry-storage gamma-ray
irradiators. For procedures specific to dosimetry in blood
irradiation, see ISO/ASTM Practice
51939. For procedures specific to dosimetry in radiation research on
food and agricultural
products, see ISO/ASTM Practice 51900. For procedures specific to
radiation hardness testing, see
ASTM Practice E 1249. For procedures specific to the dosimetry in the
irradiation of insects for
sterile release programs, see ISO/ASTM Guide 51940. In those cases
covered by ISO/ASTM Practices
51939, 51900, 51940, or ASTM E 1249, those standards take precedence.
In addition, this practice
does not cover absorbed-dose rate calibrations of radiation protection
instrumentation.
This standard does not purport to address all of the safety concerns,
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.
Keywords:
- batch radiation processing
- calibration of dosimeters
- cesium-137
- cobalt-60
- dosimeter research studies
- dosimetry
- dry-storage irradiators
- gamma cells
- gamma radiation
- radiation process validation
- radiation effects testing
- self-contained irradiators
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