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ASTM E1431

1998 Edition, January 10, 1998

Complete Document

Standard Practice for Dosimetry in Electron and Bremsstrahlung Irradiation Facilities for Food Processing

Includes all amendments and changes through Editorial Change 1, July 1999

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Detail Summary

Superseded By: ASTM ISO/ASTM 51431

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Product Details:

  • Revision: 1998 Edition, January 10, 1998
  • Published Date: July 1999
  • Status: Superseded By:
  • Superseded By: ASTM ISO/ASTM 51431
  • Document Language: English
  • Published By: ASTM International (ASTM)
  • Page Count: 10
  • ANSI Approved: Yes
  • DoD Adopted: No

Description / Abstract:

1. Scope

1.1 This practice describes dosimetric procedures to be followed in facility characterization, process qualification, and routine processing for electron beam and bremsstrahlung irradiation facilities for food processing to ensure that product receives an acceptable range of absorbed doses. Other procedures related to facility characterization, process qualification, and routine product processing that may influence and be used to monitor absorbed dose in the product are also discussed. Information about effective or regulatory dose limits for food products is not within the scope of this practice (see Guides F 1355 and F 1356).

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.

1.2 The electron energy range covered in this practice is from 0.3 MeV to 10 MeV. Such electrons can be generated in continuous or pulse modes.

1.3 The maximum electron energy of bremsstrahlung facilities covered in this practice is 10 MeV. A photon beam can be generated by inserting a bremsstrahlung converter in the electron beam path (See Standard Practice E 1608).

NOTE 2--For guidance in the selection, calibration, and use of specific dosimeters and interpretation of absorbed dose in the product from dose measurements, see the documents listed in E 1261 and practices for individual dosimetry systems listed in 2.1.

NOTE 3--Bremsstrahlung from machine sources and gamma rays from radioactive isotopic sources are similar in characteristics, especially as dosimetry is concerned. See Practice E 1204 for the applications of dosimetry in characterization and operation of gamma-ray irradiation facilities for food processing. For information concerning electron beam irradiation technology and dosimetry, see Practice E 1649.

1.4 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 appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.