GB/T 4080-1983
Replaced
GB/T 12162.2-2025
Active
National standards
GB/T 12162.2-2025 X and gamma reference radiation for calibrating dosemeters and doserate meters and for determining their response as a function of photon energy—Part 2:Dosimetry for radiation protection over the energy ranges from 8 keV to 1.3 MeV and 4 MeV to 9 MeV
GB/T 12162.2-2025 X and gamma reference radiation for calibrating dosemeters and doserate meters and for determining their response as a function of photon energy—Part 2:Dosimetry for radiation protection over the energy ranges from 8 keV to 1.3 MeV and 4 MeV to 9 MeV
Basic Information
Standard Code:
GB/T 12162.2-2025
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
Publisher:
国家市场监督管理总局、国家标准化管理委员会
Technical Committee:
全国核能标准化技术委员会(SAC/TC 58)
Pages:
32 pages
Scope
本文件描述了用于校准辐射防护仪器,能量范围约为8 keV~1.3 MeV和4 MeV~9 MeV,空气比释动能率高于1 μGy/h的X和γ参考辐射剂量测定程序。
本文件适用于自由空气中空气比释动能Ka以及运行实用量H*(10)、Hp(10)、H′(3)、Hp(3)、H′(0.07)和Hp(0.07)的剂量测定。
本文件中给出的要求和方法旨在使参考场与体模相关的运行实用量剂量(率)的扩展不确定度(k=2)约为6%~10%。为此,ISO 4037-1中给出了两种参考场的产生方法。
第一种方法是非常严格地遵循要求产生“匹配参考场”,能直接使用推荐的转换系数。通过本文件给出并详细描述的程序,“匹配参考场”与标称参考场微小的能谱差异得以验证。对于匹配参考辐射场ISO 4037-3仅针对源和剂量计之间的指定距离(例如1.0 m和2.5 m)给出了推荐的转换系数。对于其他距离,使用者需要判断是否能使用这些转换系数。
第二种方法产生的“表征参考场”,或者通过能谱法确定转换系数予以实现,或者通过次级标准剂量仪直接测量所需量值予以实现。该方法适用于任何辐射质和测量量,以及适用的任何体模和任何辐射入射角。能确定不低于1 μGy/h空气比释动能率下任何距离的转换系数。
Development Information
Drafting Units:
中国原子能科学研究院、中国计量科学研究院、核工业标准化研究所
Drafting Persons:
魏可新、宋明哲、李德红、滕忠斌、杭仲斌、刘川凤、黎庆然、梁永涛、靳立强
Same series standard
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
GB/T 12162.3-2025 X and gamma reference radiation for calibrating dosemeters and doserate meters and for determining their response as a function of photon energy—Part 3:Calibration of area and personal dosemeters and the measurement of their response as a function of energy and angle of incidence
Replace the following standards
Referenced Standards
GB/T 12162.3-2025 X and gamma reference radiation for calibrating dosemeters and doserate meters and for determining their response as a function of photon energy—Part 3:Calibration of area and personal dosemeters and the measurement of their response as a function of energy and angle of incidence
ISO 4037-1
ISO 4037-3
ISO 4037-4
ISO 29661
ISO 80000-10
ISO/IEC Guide 98-3
ISO/IEC Guide 99
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
Adopt standards
ISO 4037-2:2019
Related Standards
GB/T 4835-1984
Replaced
GB/T 4835-1984 Portable X or gamma radiation doserate meters and monitors for use in radiation protection
GB/T 4861-1984
Replaced
GB/T 4861-1984 Analogue counting ratemeters characteristics and test methods
GB/T 5202-1985
Replaced
GB/T 5202-1985 Alpha, beta and alpha-beta surface contamination meters and monitors
GB/T 5964-1986
Replaced
GB/T 5964-1986 High voltage coaxial connectors used in nuclear instrumentation
GB/T 7165.1-1987
Replaced