GB/T 139-2008 (English Version) PDF

Standard No.: GB/T 139-2008
Language: Chinese, Available in English version
Release Date: 2008
Published By: General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
Latest: GB/T 139-2008
Replace: GB/T 139-1989

Scope: This standard specifies the preparation method and test procedure for measuring the absorbed dose of ionizing radiation in water using a ferrous sulfate acidic aqueous solution dose measurement system. The system, also known as the Fricke dose measurement system, consists of dosimeters and related analytical instruments. This standard specifies the procedure for the determination of Fricke dosimeters by spectrophotometry. This standard applies to the measurement of gamma rays, X-rays (bremsstrahlung) and high-energy electron beam absorbed doses. This standard applies to the Fricke dosimeter dose measurement system for measuring absorbed dose under the following conditions: Absorbed dose range: 20Gy ~ 400Gy. Absorbed dose rate: ≤10⁶Gy•s^-1. Radiation energy: The initial photon energy of the γ-ray source should be greater than 0.6MeV; for X-rays (bremsstrahlung), the initial energy of the electrons used to generate photons should be equal to or greater than 2.0MeV; for the electron beam, the initial energy of the electrons should not be less than 8.0MeV (see ICRU Reports 34 and 35). Irradiation temperature of dosimeter: 10℃～60℃. This standard does not address safety issues associated with use, if any. The user of this standard is responsible for establishing applicable safety and health standards and determining applicable limitations prior to use.

GB/T 139-2008 Referenced Document

ASTM E668 Standard Practice for Application of Thermoluminescence-Dosimetry (TLD) Systems for Determining Absorbed Dose in Radiation-Hardness Testing of Electronic Devices*， 2020-07-01 Update
GB 2637 Ampoule
GB/T 15446 Terminology relating to radiation processing dosimetry
GB/T 15447 Conversion method of absorbed doses in different materials irradiated by X、γ rays and election beams
GB/T 16509 Standard guide for estimating uncertainties in dosimetry for radiation processing
GB/T 16510 The requirements for the competence of a radiation processing dosimetry calibration laboratory
GB/T 16640 Standard guide for selection and calibration of dosimetry systems for radiation processing
JJG 682 Verification Regulation of Double Beam UV-VIS Spectrophotometers
JJG 689 UV-VIS-NIR Spectrophotometer

2008 GB/T 139-2008 Standard method for using the ferrous sulfat(Fricke)dosimeter to measure absorbed dose in water
1989 GB/T 139-1989 Standard method for using the ferrous sulfate(Fricke)dosimeter to measure absorbed dose in water