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ASTM ISO/ASTM51608-02

Historical Revision

Standard Practice for Dosimetry in an X-Ray (Bremsstrahlung) Facility for Radiation Processing

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1.1 This practice covers dosimetric procedures to be followed in facility characterization, process qualification, and routine processing using X rays (bremsstrahlung) to ensure that the entire product has been treated within an acceptable range of absorbed doses. Other procedures related to facility characterization, process qualification, and routine processing that may influence absorbed dose in the product are also discussed. The establishment of effective or regulatory dose and X-ray energy limits are not within the scope of this practice.

1.2 In contrast to monoenergetic gamma rays, the bremsstrahlung energy spectrum extends from low values up to the maximum energy of the electrons incident on the X-ray target (see Section 5 and Annex A1).

1.3 Dosimetry is only one component of a total quality assurance program for an irradiation facility. Other controls besides dosimetry may be required for specific applications such as medical device sterilization and food preservation.

1.4 For the irradiation of food and the radiation sterilization of health care products, other specific ISO standards exist. For food irradiation, see ISO/ASTM Practice 51431. For the radiation sterilization of health care products, see ISO 11137:1995. In those areas covered by ISO 11137, that standard takes precedence.

Note 1—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 2.1, 2.3 and 2.4.

Note 2—Bremsstrahlung characteristics are similar to gamma rays from radioactive isotopes. See ISO/ASTM Practices 51204 and 51702 for the applications of dosimetry in the characterization and operation of gamma-ray irradiation facilities. For information concerning electron beam irradiation technology and dosimetry, see ISO/ASTM Practices 51431 and 51649.

1.5 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.


SDO ASTM: ASTM International
Document Number ISO
Publication Date Jan. 22, 2002
Language en - English
Page Count 11
Revision Level 02
Supercedes
Committee E10.01
Publish Date Document Id Type View
Jan. 1, 2015 E1608-15 Revision
May 15, 2005 E1608-05 Revision
Jan. 22, 2002 E1608-02 Revision
Dec. 1, 2022 E1608-15R22 Reaffirmation