ISO/ASTM 51431:2005,Practice for dosimetry in electron beam and X-ray (bremsstrahlung) irradiation facilities for food processing.The size of this pdf file is 6M.Now you can download it for free on www.freestandardsdownload.com.
ISO/ASTM 51431:2005 outlines the installation qualification program for an irradiator and the dosimetric procedures to be followed during operational qualification, performance qualification and routine processing in facilities that process food with high-energy electrons and X-rays (bremsstrahlung) to ensure that the product has been treated within a predetermined range of absorbed dose.
6. Irradiation facilities
6. 1 The design of an irradiation facility affects the delivery of absorbed dose to a product. Therefore, the facility designshould be considered when performing the absorbed-dosemeasurements required in Sections 10-12.
6.2 Facility Components-Electron and X-ray irradiation facilities include the electron beam accelerator system; producthandling system;a radiation shield with personnel safety system; product loading, unloading and storage areas as required by regulations; auxiliary equipment for power,cooling, ventilation, etc;equipment control room; a laboratoryfor dosimetry; and personnel offices, An X-ray facility alsoincludes an X-ray converter(see ISO/ASTM Practice 51608)

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