GB/T 12162.1-2025 Active National standards

GB/T 12162.1-2025 X and gamma reference radiation for calibrating dosemeters and doserate meters and for determining their response as a function of photon energy—Part 1:Radiation characteristics and production methods

Publish Date: 2025-10-31 Implement Date: 2026-05-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: GB/T 12162.1-2025

Standard Type: National standards

Standard Status: Active

is_force_gb: no

CCS Name: Exploration, mining, and process monitoring nuclear instruments

ICS Name: Radiation measurement

Publish Date: 2025-10-31

Implement Date: 2026-05-01

Pages: 52 pages

Scope

This document describes the radiation characteristics and generation methods used to calibrate the protection level dosimeters and dose rate meters X and γ reference radiation according to the operational utility dose.
This document is applicable to reference radiation fields with an air kerma rate of not less than 1 μGy·h-1.
This document is not applicable to air kerma rates below this limit, which require special consideration of (natural) background radiation.
The radiation qualities specified in Chapters 4 to 6 have sufficient publicly available information to define the matching or characterization of the reference field, in order to achieve a target of an extended uncertainty of about 6% to 10% (k=2) related to the phantom. The X-ray radiation fields described in Appendices A to C are not designated as reference X-ray radiation fields.