GB/T 39325-2020_English: PDF (GB/T39325-2020)
| Standard ID | USD | BUY PDF | Lead-Days | Standard Title (Description) | Status |
| GB/T 39325-2020 | 339 |
Add to Cart
|
4 days
|
Specification for radiation shielding of superconducting proton cyclotron
| Valid |
| Standard ID | GB/T 39325-2020 (GB/T39325-2020) | | Description (Translated English) | Specification for radiation shielding of superconducting proton cyclotron | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | F91 | | Classification of International Standard | 27.120.99 | | Word Count Estimation | 18,183 | | Date of Issue | 2020-11-19 | | Date of Implementation | 2021-06-01 | | Quoted Standard | GB/T 4960.5; GBZ/T 202-2007 | | Regulation (derived from) | National Standard Announcement No. 26 of 2020 | | Issuing agency(ies) | State Administration for Market Regulation, National Standardization Administration | | Summary | This standard specifies the general requirements for the shielding of the superconducting cyclotron proton accelerator room, the reference control level of dose rate, shielding calculation and radiation monitoring requirements. This standard applies to the radiation shielding design of superconducting cyclotron proton accelerators with proton energy in the range of 70 MeV to 1 000 MeV, as well as the radiation shielding design of other types of proton accelerators with proton energy in the range of 70 MeV to 1 000 MeV. |
GB/T 39325-2020
Specification for radiation shielding of superconducting proton cyclotron
ICS 27.120.99
F91
National Standards of People's Republic of China
Radiation shielding specification for superconducting cyclotron proton accelerator
2020-11-19 released
2021-06-01 implementation
State Administration for Market Regulation
Issued by the National Standardization Management Committee
Preface
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
This standard was proposed and managed by the National Nuclear Energy Standardization Technical Committee (SAC/TC58).
This standard was drafted. Hefei Zhongke Ion Medical Technology Equipment Co., Ltd., Institute of Plasma Physics, Chinese Academy of Sciences.
The main drafters of this standard. Song Yuntao, Xu Kun, Lei Mingzhun, Chen Yonghua, Feng Hansheng, Lu Kun, Li Jun, Ding Kaizhong, Liu Lu, Chen Gen, Zheng Jinxing,
Wei Jianghua, Li Shi, Yang Qingxi, Li Junjun, Xing Yixiang, Han Manfen, Huang Yi.
Radiation shielding specification for superconducting cyclotron proton accelerator
1 Scope
This standard specifies the general requirements for the shielding of the superconducting cyclotron proton accelerator room, the reference control level of dose rate, shielding calculation and radiation monitoring requirements.
This standard applies to the radiation shielding design of superconducting cyclotron proton accelerators with proton energy in the range of 70MeV~1000MeV.
It can also be used for the radiation shielding design of other types of proton accelerators with proton energy in the range of 70MeV~1000MeV.
2 Normative references
The following documents are indispensable for the application of this document. For dated reference documents, only the dated version applies to this document.
For undated references, the latest version (including all amendments) applies to this document.
GB/T 4960.5 Nuclear Science and Technology Terms Radiation Protection and Radiation Source Safety
GBZ /T 202-2007 Dose conversion factor for neutron external radiation protection
3 Terms and definitions
The following terms and definitions defined in GB/T 4960.5 apply to this document.
3.1
Superconducting cyclotron proton accelerator
A circular accelerator that uses superconducting magnets to provide a constant guided magnetic field, uses a constant frequency electric field to accelerate, and the proton beam moves along a spiral orbit.
3.2
Residence factor
The average time that the largest irradiated person stays in the area of the radiation source during the beaming time accounts for the share of the beaming time.
3.3
Use factor
The time that the primary radiation beam (useful beam) irradiates in a useful beam shielding direction accounts for the share of the total irradiation time.
3.4
Beam loss
During the formation, acceleration, extraction, and transportation of the proton beam, the beam intensity caused by the interaction with the accelerator system components
Partial or total loss of beam energy.
3.5
Secondary neutron
Neutrons produced by the interaction of protons with matter.
Note. In general, secondary neutrons include cascade neutrons and evaporation neutrons.
......
Similar standards: GB/T 40618 GB 15213 |