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GB 16351-1996Radiological health protection standard on gamma-beam teletherapy equipment in medicine (English PDF)

医用γ射线远距治疗设备放射卫生防护标准

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Issued by

State Bureau of Technical Supervision; Ministry of Health of the People's Republic of China

Level / Type

National · Mandatory

Issue date

May 23, 1996

Implementation date

December 1, 1996

Scope

GB 16351-1996 is the English-translated version of 医用γ射线远距治疗设备放射卫生防护标准.

GB 16351-1996 sets the basic radiological health requirements for gamma-beam teletherapy equipment used in medicine, and applies to both the production and the use of such equipment.

It defines the terms used (permissible maximum source strength, useful beam, leakage radiation, penumbra, isocenter and others) and fixes the technical requirements: source strength not less than 37 TBq, output within 10% of the standard value, field unsymmetry below 5%, timer error within 1%, isocenter error within 4 mm and penumbra width below 10 mm.

Safety requirements limit head leakage in the storage position to 200 µGy/h at 5 cm and 10 µGy/h average (50 µGy/h maximum) at 1 m, and in the irradiation position to 0.1% or 0.05% of the useful beam depending on source strength, with limits on collimator and counterweight transmission and beta surface contamination.

Further clauses cover the instruments for inspection, factory inspection of products and the design of treatment rooms (area, height, maze entrance, interlocks, ventilation); Annex A gives the measurement and calculation methods for each indicator, including the star-shot isocenter check and the penumbra and leakage measurements.

Issued on 23 May 1996 and in force since 1 December 1996. Classification: ICS 13.280, CCS C57. The document runs to 11 pages, delivered complete in English translation.

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Document preview — GB 16351-1996

National Standard of the People's Republic of China

ICS
13.280
Classification
C57

Issued by: State Bureau of Technical Supervision; Ministry of Health of the People's Republic of China

Contents

  • 1 Subject content and scope of application
  • 2 Referenced standards
  • 3 Terms, symbols and codes
  • 4 Technical requirements
  • 5 Factory inspection of the product
  • 6 Requirements on the treatment room facilities
  • Annex A (normative) Selection of the checkpoints and methods of measurement and calculation
  • Annex B (informative) Calculation of the shielding thickness of 60Co gamma-ray therapy rooms
  • Annex C (informative) Essential contents of the instruction manual for gamma therapy equipment

3 Terms, symbols and codes

4 Technical requirements

5 Factory inspection of the product

6 Requirements on the treatment room facilities

Foreword

Approved by the State Bureau of Technical Supervision on 1996-05-23; implemented from 1996-12-01.

Issued by the State Bureau of Technical Supervision and the Ministry of Health of the People's Republic of China.

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 11 pages — is available in the English PDF.

Referenced standards

Normative references

GB 4792

Similar standards

Editions of GB 16351

EditionTitleRevisionStatus
GB 16351-1996Radiological health protection standard on gamma-beam teletherapy equipment in medicinecurrent editionCurrent

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