ISO/ASTM 51431-2005 食品加工用电子束和X射线(韧致辐射)辐照装置中剂量测定的实施规程

标准号：ISO/ASTM 51431-2005
中文标准名称：食品加工用电子束和X射线(韧致辐射)辐照装置中剂量测定的实施规程
英文标准名称：Practice for dosimetry in electron beam and X-ray (bremsstrahlung) irradiation facilities for food processing
标准类型：X90
发布日期：1999/12/31 12:00:00
实施日期：1999/12/31 12:00:00
中国标准分类号：X90
国际标准分类号：17.240;67.020
适用范围：1 This practice outlines the installation qualification pro-gram for an irradiator and the dosimetric procedures to be followed during operational qualification, performance quali-fication and routine processing in facilities that process food with high-energy electrons and X-rays (bremsstrahlung) to ensure that product has been treated within a predetermined range of absorbed dose. Other procedures related to operational qualification, performance qualification and routine processing that may influence absorbed dose in the product are also discussed. Information about effective or regulatory dose limits for food products, and appropriate energy limits for electron beams used directly or to generate X-rays is not within the scope of this practice (see ASTM Guides F 1355, F 1356, F 1736, and F 1885). Note 1—Dosimetry is only one component of a total quality assurance program for adherence to good manufacturing practices used in the production of safe and wholesome food. Note 2—ISO/ASTM Practice 51204 describes dosimetric procedures for gamma irradiation facilities for food processing. 2 For guidance in the selection and calibration of dosim-etry systems, and interpretation of measured absorbed dose in the product, see ISO/ASTM Guide 51261 and ASTM Practice E 666. For the use of specific dosimetry systems, see ASTM Practices 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 electrons and X-rays also see ICRU Reports 35 and 14. For discussion of radiation dosimetry for pulsed radiation, see ICRU Report 34. 3 While gamma radiation from radioactive nuclides has discrete energies, X-rays (bremsstrahlung) from machine sources cover a wide range of energies, from low values (about 35 keV) to the energy of the incident electron beam. For information concerning electron beam irradiation technology and dosimetry, see ISO/ASTM Practice 51649. For information concerning X-ray irradiation technology and dosimetry, see ISO/ASTM Practice 51608. 4 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 appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.