ASTM ISO/ASTM51205-17
(Practice)Standard Practice for Use of a Ceric-Cerous Sulfate Dosimetry System
Standard Practice for Use of a Ceric-Cerous Sulfate Dosimetry System
SIGNIFICANCE AND USE
4.1 The ceric-cerous system provides a reliable means for determining absorbed dose to water. It is based on a process of reduction of ceric ions to cerous ions in acidic aqueous solution by ionizing radiation (1, 4, ICRU Report 80).
Note 3: The ceric-cerous system described in the practice has cerous sulfate added to the initial solution to reduce the effect of organic impurities and to allow the potentiometric method of measurement. Other systems used for dosimetry include solutions of ceric sulfate or ceric ammonium sulfate in sulfuric acid without the initial addition of cerous sulfate. These other systems are based on the same process of reduction of ceric ions to cerous ions but are not included in this practice.
SCOPE
1.1 This practice covers the preparation, testing, and procedure for using the ceric-cerous sulfate dosimetry system to measure absorbed dose to water when exposed to ionizing radiation. The system consists of a dosimeter and appropriate analytical instrumentation. For simplicity, the system will be referred to as the ceric-cerous system. The ceric-cerous dosimeter is classified as a type 1 dosimeter on the basis of the effect of influence quantities. The ceric-cerous system may be used as a reference standard dosimetry system or as a routine dosimetry system.
1.2 This document is one of a set of standards that provides recommendations for properly implementing dosimetry in radiation processing, and describes a means of achieving compliance with the requirements of ISO/ASTM Practice 52628 for the ceric-cerous system. It is intended to be read in conjunction with ISO/ASTM Practice 52628.
1.3 This practice describes both the spectrophotometric and the potentiometric readout procedures for the ceric-cerous system.
1.4 This practice applies only to gamma radiation, X-radiation/bremsstrahlung, and high energy electrons.
1.5 This practice applies provided the following conditions are satisfied:
1.5.1 The absorbed-dose range is from 5 × 102 to 5 × 104 Gy (1).2
1.5.2 The absorbed-dose rate does not exceed 106 Gy s−1 (1).
1.5.3 For radionuclide gamma-ray sources, the initial photon energy is greater than 0.6 MeV. For bremsstrahlung photons, the initial energy of the electrons used to produce the bremsstrahlung photons is equal to or greater than 2 MeV. For electron beams, the initial electron energy is greater than 8 MeV.
Note 1: The lower energy limits are appropriate for a cylindrical dosimeter ampoule of 12-mm diameter. Corrections for dose gradient across the ampoule may be required for electron beams (2). The ceric-cerous system may be used at lower energies by employing thinner (in the beam direction) dosimeters (see ICRU Report 35).
1.5.4 The irradiation temperature of the dosimeter is above 0°C and below 62°C (3).
Note 2: The temperature coefficient of dosimeter response is known only in this range (see 5.2). Use outside this range requires determination of the temperature coefficient.
1.6 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.
1.7 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
General Information
Relations
Buy Standard
Standards Content (Sample)
This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
ISO/ASTM 51205:2017(E)
Standard Practice for
1
Use of a Ceric-Cerous Sulfate Dosimetry System
This standard is issued under the fixed designation ISO/ASTM 51205; the number immediately following the designation indicates the
year of original adoption or, in the case of revision, the year of last revision.
NOTE 1—The lower energy limits are appropriate for a cylindrical
1. Scope
dosimeter ampoule of 12-mm diameter. Corrections for dose gradient
1.1 This practice covers the preparation, testing, and proce-
across the ampoule may be required for electron beams (2). The
dure for using the ceric-cerous sulfate dosimetry system to
ceric-cerous system may be used at lower energies by employing thinner
(in the beam direction) dosimeters (see ICRU Report 35).
measure absorbed dose to water when exposed to ionizing
radiation. The system consists of a dosimeter and appropriate
1.5.4 The irradiation temperature of the dosimeter is above
analytical instrumentation. For simplicity, the system will be
0°C and below 62°C (3).
referred to as the ceric-cerous system.The ceric-cerous dosim-
NOTE 2—The temperature coefficient of dosimeter response is known
eter is classified as a type 1 dosimeter on the basis of the effect
only in this range (see 5.2). Use outside this range requires determination
ofinfluencequantities.Theceric-ceroussystemmaybeusedas
of the temperature coefficient.
a reference standard dosimetry system or as a routine dosim-
1.6 This standard does not purport to address all of the
etry system.
safety concerns, if any, associated with its use. It is the
1.2 This document is one of a set of standards that provides
responsibility of the user of this standard to establish appro-
recommendations for properly implementing dosimetry in priate safety and health practices and determine the applica-
radiation processing, and describes a means of achieving
bility of regulatory limitations prior to use.
compliance with the requirements of ISO/ASTM Practice 1.7 This international standard was developed in accor-
52628 for the ceric-cerous system. It is intended to be read in
dance with internationally recognized principles on standard-
conjunction with ISO/ASTM Practice 52628. ization established in the Decision on Principles for the
Development of International Standards, Guides and Recom-
1.3 This practice describes both the spectrophotometric and
mendations issued by the World Trade Organization Technical
the potentiometric readout procedures for the ceric-cerous
Barriers to Trade (TBT) Committee.
system.
1.4 This practice applies only to gamma radiation,
2. Referenced documents
X-radiation/bremsstrahlung, and high energy electrons.
3
2.1 ASTM Standards:
1.5 This practice applies provided the following conditions
C912Practice for Designing a Process for Cleaning Techni-
are satisfied:
cal Glasses
2 4
1.5.1 Theabsorbed-doserangeisfrom5×10 to5×10 Gy
E170Terminology Relating to Radiation Measurements and
2
(1).
Dosimetry
6 −1
1.5.2 The absorbed-dose rate does not exceed 10 Gy s
E178Practice for Dealing With Outlying Observations
(1).
E275PracticeforDescribingandMeasuringPerformanceof
1.5.3 For radionuclide gamma-ray sources, the initial pho-
Ultraviolet and Visible Spectrophotometers
ton energy is greater than 0.6 MeV. For bremsstrahlung
E666Practice for CalculatingAbsorbed Dose From Gamma
photons, the initial energy of the electrons used to produce the
or X Radiation
bremsstrahlung photons is equal to or greater than 2 MeV. For
E668 Practice for Application of Thermoluminescence-
electron beams, the initial electron energy is greater than 8
Dosimetry (TLD) Systems for Determining Absorbed
MeV.
DoseinRadiation-HardnessTestingofElectronicDevices
E925Practice for Monitoring the Calibration of Ultraviolet-
Visible Spectrophotometers whose Spectral Bandwidth
1
This practice is under the jurisdiction of ASTM Committee E61 on Radiation
Processing and is the direct responsibility of Subcommittee E61.02 on Dosimetry does not Exceed 2 nm
Systems, and is also under the jurisdiction of ISO/TC 85/WG 3.
E958Practice for Estimation of the Spectral Bandwidth of
Current edition approved March 8, 2017. Published May 2017. Originally
published as ASTM E1205–88. Last previous ASTM edition E1205–99. ASTM
E1205–93 was adopted by ISO in 1998 with the intermediate designation ISO
3
15555:1998(E). The present International Standard ISO/ASTM 51205:2017(E) is a For referenced ASTM and ISO/ASTM standards, visit the ASTM website,
major revision of ISO/ASTM 51205-2009(E). DOI:10.1520/ISOASTM51205-17. www.astm.org, or contact ASTM Customer Service at service@astm.org. For
2
Theboldfacenumbersinparenthesesrefertothebibliographyattheendofthis
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
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.
ISO/ASTM 51205:2009(E)
ISO/ASTM 51205 − 2017(E)
Standard Practice for
1
Use of a Ceric-Cerous Sulfate Dosimetry System
This standard is issued under the fixed designation ISO/ASTM 51205; the number immediately following the designation indicates the
year of original adoption or, in the case of revision, the year of last revision.
1. Scope
1.1 This practice covers the procedures for preparation, testing, and procedure for using the ceric-cerous sulfate dosimetry
system to determinemeasure absorbed dose (in terms of absorbed dose to water) in materials irradiated by photons (gamma
radiation or X-radiation/bremsstrahlung) or high-energy electrons. to water when exposed to ionizing radiation. The system
consists of a dosimeter and appropriate analytical instrumentation. For simplicity, the system will be referred to as the ceric-cerous
system. It The ceric-cerous dosimeter is classified as a reference–standard dosimetry system (see ISO/ASTM Guidetype 1
dosimeter on the basis 51261). Ceric-cerous dosimeters are also used as transfer–standard dosimeters or routine dosimeters.of the
effect of influence quantities. The ceric-cerous system may be used as a reference standard dosimetry system or as a routine
dosimetry system.
1.2 This document is one of a set of standards that provides recommendations for properly implementing dosimetry in radiation
processing, and describes a means of achieving compliance with the requirements of ISO/ASTM Practice 52628 for the
ceric-cerous system. It is intended to be read in conjunction with ISO/ASTM Practice 52628.
1.3 This practice describes both the spectrophotometric and the potentiometric readout procedures for the ceric-cerous system.
1.4 This practice applies only to gamma radiation, X-radiation/bremsstrahlung, and high energy electrons.
1.5 This practice applies provided the following conditions are satisfied:
2 4 2
1.5.1 The absorbed-dose range is between 0.5 and 50from 5 × 10 kGy to 5 × 10 Gy (1).
6 −1
1.5.2 The absorbed-dose rate is less thandoes not exceed 10 Gy s (1).
1.5.3 For radionuclide gamma-ray sources, the initial photon energy is greater than 0.6 MeV. For bremsstrahlung photons, the
initial energy of the electrons used to produce the bremsstrahlung photons is equal to or greater than 2 MeV. For electron beams,
the initial electron energy is greater than 8 MeV.
NOTE 1—The lower energy limits are appropriate for a cylindrical dosimeter ampoule of 12-mm diameter. Corrections for dose gradientsgradient across
an ampoule of that diameter or less are not required for photons, but the ampoule may be required for electron beams (2). The ceric-cerous system may
be used at lower energies by employing thinner (in the beam direction) dosimeters.dosimeters (see ICRU Report 35).
1.5.4 The irradiation temperature of the dosimeter is above 0°C and below 62°C (3).
NOTE 2—The temperature dependencecoefficient of dosimeter response is known only in this range (see 4.35.2). Use outside this range requires
determination of the temperature dependence.coefficient.
1.6 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.
1.7 This international standard was developed in accordance with internationally recognized principles on standardization
established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued
by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
1
This guidepractice is under the jurisdiction of ASTM Committee E61 on Radiation Processing and is the direct responsibility of Subcommittee E61.02 on Dosimetry
Systems, and is also under the jurisdiction of ISO/TC 85/WG 3.
Current edition approved June 18, 2008. Published June 2009.March 8, 2017. Published May 2017. Originally published as ASTM E1205–88. Last previous ASTM edition
E1205–99. ASTM E1205–93 was adopted by ISO in 1998 with the intermediate designation ISO 15555:1998(E). The present International Standard ISO/ASTM
51205:2009(E)51205:2017(E) is a major revision of ISO/ASTM 51205-2002(E) which replaced ISO 15555.51205-2009(E). DOI:10.1520/ISOASTM51205-17.
2
The boldface numbers in parentheses refer to the bibliography at the end of this standard.
© ISO/ASTM International 2017 – All rights reserved
1
---------------------- Page: 1 ----------------------
ISO/ASTM 51205:2017(E)
2. Re
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.