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GB/T 39325-2020 English PDF

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US$339.00 · In stock
Delivery: <= 4 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 39325-2020: Specification for radiation shielding of superconducting proton cyclotron
Status: Valid

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

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Basic data

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: 18,121
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, China 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

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
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

Foreword

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. ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 39325-2020_English be delivered?

Answer: Upon your order, we will start to translate GB/T 39325-2020_English as soon as possible, and keep you informed of the progress. The lead time is typically 2 ~ 4 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of GB/T 39325-2020_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 39325-2020_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Question 3: Does the price include tax/VAT?

Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.