1、ISO/ASTM 51204:2004(E)Standard Practice forDosimetry in Gamma Irradiation Facilities for FoodProcessing1This standard is issued under the fixed designation ISO/ASTM 51204;the number immediately following the designation indicates theyear of original adoption or,in the case of revision,the year of la
2、st revision.1.Scope1.1 This practice outlines the installation qualification pro-gram for an irradiator and the dosimetric procedures to befollowed during operational qualification,performance quali-fication,and routine processing in facilities that process foodwith ionizing radiation from radionucl
3、ide gamma sources toensure that product has been treated within a predeterminedrange of absorbed dose.Other procedures related to operationalqualification,performance qualification,and routine process-ing that may influence absorbed dose in the product are alsodiscussed.Information about effective o
4、r regulatory dose limitsfor food products is not within the scope of this practice(seeASTM Guides F 1355,F 1356,F 1736,and F 1885).NOTE1Dosimetry is only one component of a total quality assuranceprogram for adherence to good manufacturing practices used in theproduction of safe and wholesome food.N
5、OTE2ISO/ASTM Practice 51431 describes dosimetric proceduresfor electron beam and X-ray(bremsstrahlung)irradiation facilities forfood processing.1.2 For guidance in the selection and calibration of dosim-etry systems,and interpretation of measured absorbed dose inthe product,see ISO/ASTM Guide 51261
6、and ASTM PracticeE 666.For the use of specific dosimetry systems,see ASTMPractices E 1026 and E 2304,and ISO/ASTM Practices 51205,51275,51276,51310,51401,51538,51540,51607,51650,and 51956.For discussion of radiation dosimetry for gamma-rays and X-rays also see ICRU Report 14.1.3 This standard does n
7、ot purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2.Referenced documents2.1 ASTM Standards:2
8、E 170 Terminology Relating to Radiation Measurementsand DosimetryE 666 Practice for CalculatingAbsorbed Dose from Gammaor X RadiationE 1026 Practice for Using the Fricke Reference StandardDosimetry SystemE 2232 Guide for Selection and Use of Mathematical Mod-els for CalculatingAbsorbed Dose in Radia
9、tion-ProcessingApplicationsE 2304 Practice for Use of a LiF Photo-Fluorescent FilmDosimetry SystemF 1355 Guide for the Irradiation of Fresh Fruits as aPhytosanitary TreatmentF 1356 Guide for the Irradiation of Fresh and Frozen RedMeats and Poultry to Control Pathogens and Other Micro-organismsF 1736
10、 Guide for the Irradiation of Finfish and Shellfish toControl Pathogens and Spoilage MicroorganismsF 1885 Guide for Irradiation of Dried Spices,Herbs,andVegetable Seasonings to Control Pathogens and OtherMicroorganisms2.2ISO/ASTM Standards:251205 Practice for Use of a Ceric-Cerous Sulfate DosimetryS
11、ystem51261 Guide for Selection and Calibration of DosimetrySystems for Radiation Processing51275 Practice for Use of a Radiochromic Film DosimetrySystem51276 Practice for Use of a Polymethylmethacrylate Do-simetry System51310 Practice for Use of a Radiochromic OpticalWaveguide Dosimetry System51400
12、Practice for Characterization and Performance of aHigh-Dose Radiation Dosimetry Calibration Laboratory51401 Practice for Use of a Dichromate Dosimetry System51431 Practice for Dosimetry in Electron Beam and X-raybremsstrahlung Irradiation Facilities for Food Processing51538 Practice for Use of an Et
13、hanol-Chlorobenzene Do-simetry System1This practice is under the jurisdiction of ASTM Committee E10 on NuclearTechnology and Applications and is the direct responsibility of SubcommitteeE10.01 on Dosimetry for Radiation Processing and is also under the jurisdiction ofISO/TC 85/WG 3.Current edition a
14、pproved June 30,2004.Published August 15,2004.Originallypublished as ASTM E 1204 87.Last previous edition E 120497e1.ASTME 1204-93 was adopted by ISO in 1998 with the intermediate designation ISO15554:1998(E).The present International Standard ISO/ASTM 51204:2004(E)replaces ISO 15554 and is a major
15、revision of the last previous edition ISO/ASTM51204:2002(E).2For referenced ASTM and ISO/ASTM standards,visit the ASTM website,www.astm.org,or contact ASTM Customer Service at serviceastm.org.ForAnnual Book of ASTM Standards volume information,refer to the standardsDocument Summary page on the ASTM
16、website.1 ISO/ASTM International 2004 All rights reserved51539 Guide for the Use of Radiation-Sensitive Indicators51540 Practice for the Use of a Radiochromic LiquidDosimetry System51607 Practice for the Use of the Alanine-EPR DosimetrySystem51650 Practice for the Use of a CelluloseAcetate DosimetrySystem51707 Guide for Estimating Uncertainties in Dosimetry forRadiation Processing51956 Practice for Use of Thermoluminescence-Dosimetry(TLD)Systems for Radiation Processing2.3International Commissio
