GB/T 46475-2025Estimation method of weighted absorbed dose from acute exposure (English PDF)
急性照射加权吸收剂量估算方法
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
October 31, 2025
Implementation date
October 31, 2025
Scope
GB/T 46475-2025 is the English-translated version of 急性照射加权吸收剂量估算方法.
GB/T 46475-2025 is the Chinese standard "Estimation method of weighted absorbed dose from acute exposure". Its scope clause reads: This document establishes the principles for estimating the relative bioefficacy-weighted absorbed dose for acute irradiation and describes the estimation methods, including acute...
The route of exposure, the RBE value used for deterministic effect evaluation, the internal radiation dose estimation, and the external radiation dose estimation.
This document applies to the estimation of acute exposure dose in nuclear and radiation accident emergency management. Its clauses include terms and definitions.
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Document preview — GB/T 46475-2025
National Standard of the People's Republic of China
- ICS
- 13.280
- Classification
- F 40
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- Preface
- 1.Scope
- 2 Normative References
- 3.Terms and Definitions
- 4 Principles
- 5.Estimation of deterministic effect-related radiation dose
- 5.1 Acute irradiation route
- 5.2 RBE value used for deterministic effect evaluation
- 5.3 Estimation of Internal Irradiation Dose
- 5.4 Estimation of External Irradiation Dose
- Appendix A (Informative) Deterministic Effect-Related Internal Radiation Dose Coefficients
- Appendix B (Informative) Deterministic Effect-Related External Irradiation Dose Coefficients
- Appendix C (Informative) Tissue (Organ), Effect, and Dose Threshold Levels for Deterministic Effect Evaluation
- Appendix D (Informative) Example 59 of Acute Irradiation Dose Estimation
- References
1 Scope
This document establishes the principles for estimating the relative bioefficacy-weighted absorbed dose for acute irradiation and describes the estimation methods, including acute...
The route of exposure, the RBE value used for deterministic effect evaluation, the internal radiation dose estimation, and the external radiation dose estimation.
This document applies to the estimation of acute exposure dose in nuclear and radiation accident emergency management.
2 Normative references
This document has no normative references.
3 Terms and Definitions
The following terms and definitions apply to this document.
3.1 Deterministic effect
Radiation-induced health effects typically have a dose threshold; the higher the dose received, the more severe the effect.
The larger.
Note 1.If such an effect is fatal, life-threatening, or causes permanent damage that reduces quality of life, it is called a severe deterministic effect.
Note 2.Dose thresholds are associated with the type of deterministic health effect, but not with individual differences among those exposed. Examples of deterministic effects include erythema, keratosis, and other adverse events.
Blood system damage and acute radiation sickness. The deterministic effect is also known as a "harmful tissue reaction".
[Source. GB 18871-2002, J3.2, with modifications]
3.2 Acute exposure
High levels of radiation received within a short period of time under abnormal circumstances via external or internal radiation routes. The dose produced by such radiation...
When certain biological effect thresholds are reached, deterministic effects will be triggered.
3.3
A relative standard for measuring the ability of different types of radiation to induce specific health effects is low energy density radiation that produces the same biological effects.
LET (Leadership to Temperature) is the ratio of the dose caused by the reference radiation to the dose caused by the radiation under consideration.
3.4 ADT
The average absorbed dose produced in an organ or tissue by external irradiation, weighted by RBE.
Note. The unit is joules per kilogram (J/kg), referred to as gray (Gy).
3.5 AD(delta)T
The dose of an organ or tissue (T) expected to receive an internal irradiation dose within time delta, weighted by the RBE value.
Note. The unit is joules per kilogram (J/kg), referred to as gray (Gy).
GB/T 10266 | GB/T 47513 | GB/T 23728 | […]
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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 67 pages — is available in the English PDF.
Referenced standards
Editions of GB/T 46475
| Edition | Title | Revision | Status |
|---|---|---|---|
| GB/T 46475-2025 | Estimation method of weighted absorbed dose from acute exposure | current edition | Current |
This page sells the current edition, GB/T 46475-2025. Earlier editions are listed for reference only.
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