GB/T 139-2008 English PDF

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GB/T 139-2008: Standard method for using the ferrous sulfate (Fricke) dosimeter to measure absorbed dose in water
Status: Valid

GB/T 139: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 139-2008	369	Add to Cart	3 days	Standard method for using the ferrous sulfate (Fricke) dosimeter to measure absorbed dose in water	Valid
GB/T 139-1989	439	Add to Cart	4 days	Standard method for using the ferrous sulfate (Fricke)dosimeter to measure absorbed dose in water	Obsolete

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Basic data

Standard ID: GB/T 139-2008 (GB/T139-2008)
Description (Translated English): Standard method for using the ferrous sulfate (Fricke) dosimeter to measure absorbed dose in water
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: A58
Classification of International Standard: 17.240
Word Count Estimation: 16,177
Date of Issue: 2008-09-19
Date of Implementation: 2009-08-01
Older Standard (superseded by this standard): GB/T 139-1989
Adopted Standard: ASTM E1026-2004, MOD
Regulation (derived from): Announcement of Newly Approved National Standards No. 16 of 2008 (No. 129 overall)
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary: This standard specifies the use of an acidic aqueous solution of ferrous sulfate dosimetry systems for measurement of ionizing radiation absorbed dose in water preparation methods and test procedures. This system is also known as Fricke dosimetry system consisting of dosimeters and related analytical instruments composition. This standard specifies the use spectrophotometry Fricke dosimeter procedures. This standard applies to the Y -ray, X-ray (bremsstrahlung) and high-energy electron beam absorbed dose measurements.

GB/T 139-2008: Standard method for using the ferrous sulfate (Fricke) dosimeter to measure absorbed dose in water

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Standard method for using the ferrous sulfat (fricke) dosimeter to measure absorbed dose in water ICS 17.240 A58 National Standards of People's Republic of China Replacing GB/T 139-1989 Dosimeter measurements using ferrous sulfate in water Absorbed dose standard methods Posted 2008-09-19 2009-08-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

This revised standard adopts ASTME1026-04 "reference standard using Fricke dosimetry system with standard practice" (in English). This standard redrafted according ASTME1026-04. This standard ASTME1026-04 technical differences are as follows. a) in Chapter 2, "Normative references", for other international standards ASTME1026-04 referenced have been modified using For our standards, this standard references of these national standards or industry standards instead of the corresponding international standards; b) an increase in the "(alternative) procedures Preparation of Fe3 + ions using Fe2O3 initial solution" in the informative Appendix B Capacity (see Appendix B.2.2.2); c) increase the informative appendix "preconditioning and dosimeters reagent solution" (see Appendix C). For ease of use, according to the Chinese custom for some formatting has been modified. This standard replaces GB/T 139-1989 "ferrous sulphate dosimeter measurements using standard methods absorbed dose in water." This standard compared with GB/T 139-1989 main changes are as follows. --- Absorbed dose by the scope of 40Gy ~ 400Gy extended to 20Gy ~ 400Gy (see 1989 version 1.2.1; 1.4.1 edition); --- With "Normative References" section instead of the 1989 version of "Reference Standards" chapter relevant content (see the 1989 version of the 2; edition The 2,2.1,2.2,2.3); --- Use the "meaning and purpose" chapter replaces the 1989 edition of the "principle" chapter and relevant content, specifically the use of 12mm outer diameter of the ampoule The lower limit of the dosimeter ray energy requirements (see Chapter 4 of the 1989 edition; edition of 4, 4.5); --- In the "instruments" chapter, enhanced with cleaning solution dosimeter dosimeter method (see this version 6.2.2); --- In the "instruments" chapter, an increase of dosimeter solution containing plastic containers for processing requirements and methods (see edition 6.3, Note 2); --- Added "Calibration of dosimetry systems" chapter specific requirements (see Chapter 9 edition); --- Added "after each measurement, should regularly check the air beam spectrophotometer with" 0 "point" requirements (see Excerpts 10.3.5); --- Part of the 1989 edition of Appendix D of the temperature correction into standard text edition (see D.1 1989 edition of Appendix D, Excerpts 10.4); --- Added "at 25 ℃ irradiation and measurement, product recommended ε · G value. 3.52 × 10-4 m2 · J-1 (at 303nm Office) "content (see this edition 10.4.8); --- Remove the 1989 edition in Appendices C and D. This standard Annex A, Annex B and Annex C is informative appendix. The standard proposed by China National Nuclear Corporation. This standard by the National Standardization Technical Committee of nuclear energy. This standard was drafted. China Institute of Metrology. The main drafters. Zhang Yanli, summer shading, Mian Liu Zhi, Zhang Hui. This standard replaces the standards previously issued as follows. --- GB/T 139-1989. Dosimeter measurements using ferrous sulfate in water Absorbed dose standard methods

1 Scope

1.1 standard specifies the use of an acidic aqueous solution of ferrous sulfate dosimetry systems for measurement of ionizing radiation absorbed dose in water preparation and test program. This system is also known as Fricke dosimetry system consisting of dosimeters and related analytical instrument components. 1.2 This standard specifies the spectrophotometric determination Fricke dosimeter program. 1.3 This standard applies to γ-ray, X-ray (bremsstrahlung) and high-energy electron beam absorbed dose measurements. 1.4 This standard applies to the measurement of absorbed dose under the following conditions Fricke dosimeter dose measurement system. 1.4.1 absorbed dose range. 20Gy ~ 400Gy [1]. 1.4.2 absorbed dose rate. ≤106Gy · s-1 [2]. 1.4.3 radiation energy. initial photon energy of γ-ray source should be greater than 0.6MeV; the X-ray (bremsstrahlung), for generating a photon The initial electron energy equal to or greater than 2.0MeV; the electron beam, the initial energy of the electron is not to be less than 8.0MeV (see ICRU34 And 35 reports). 1.4.4 dosimeter irradiation temperature. 10 ℃ ~ 60 ℃. 1.5 standard does not address safety issues associated with its use (if it exists). Users of this standard is responsible for establishing the applicable safety and health Standards, and prior to use to determine the applicable limits.

2 Normative references

The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard. GB 2637 ampoule GB/T 15446 doses of radiation processing of academic language GB/T 15447 X, conversion method γ-ray and electron beam radiation absorbed doses of different materials GB/T 16509 doses of radiation processing of Measurement Uncertainty guidelines (GB/T 16509-2008, ISO /ASTM51707. 2005, IDT) GB/T 16510 radiation absorbed dose calibration laboratory processing capacity requirements (GB/T 16510-2008, ISO /ASTM51400. 2002, IDT) Selection and calibration of the guide GB/T 16640 dosimetry systems for radiation processing is (GB/T 16640-2008, ISO /ASTM51261. 2002, IDT) JJG682 double beam UV-Vis spectrophotometer JJG689 ultraviolet, visible, near infrared spectrophotometer ASTME668 using thermoluminescence (TLD) dosimetry systems for electronic equipment to determine the absorbed dose of radiation damage test in practice ICRU Report No. 34 pulse radiation dosimetry ICRU Report No. 35 of the initial energy of 1MeV ~ 50MeV electron beam radiation dosimetry ICRU Report No. 60 of ionizing radiation and the amount of the basic unit ICRU Report No. 64 of absorbed dose to water standards-based high-energy photon beam dosimetry PIRS-0815 IRSFricke dosimetry system ......

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