YY 0096-2019Co-60 teletherapy unit (English PDF)

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard replaces YY 0096-2009 "Cobalt-60 Teletherapy Machine".

Compared with YY 0096-2009, the main technical changes except the editorial modification are as follows.

--- Removed the introduction (see the introduction of the 2009 edition);

--- Normative references have added GB/T 17857 and YY 0505 (see 2);

--- Revised some terms and definitions (see 3, 3 of the 2009 edition);

--- Removed "type and basic parameters" (see 4 of the 2009 edition);

--- Increased performance requirements for the treatment bed (see 4.2.10);

--- Increased the requirement for absorbed dose rate (see 4.2.11);

--- Revised the test method for the error of the isocenter position (see 5.2.1, 6.5 of the 2009 edition);

--- Revised the test method for the trimmed penumbra width (see 5.2.2, 6.6 of the 2009 edition);

--- Revised the test method for the deviation between the field and the radiation field boundary (see 5.2.5, 6.9 of the 2009 edition);

--- Revised the test method for the display of the radiation field (see 5.2.8, 6.12 of the 2009 edition);

--- Revised electrical safety requirements and test methods (see 4.3, 5.3, 2009 editions 5.14, 6.15);

--- Removed "noise" (see 5.11 of the 2009 edition);

--- Removed the "look" (see 5.12 of the 2009 edition);

--- Removed the "ruler scale" (see 5.13 of the 2009 edition);

--- Removed the "radiation head movement" [see.2009 edition of 5.7a)];

--- Removed the "inspection rules" (see 7 of the 2009 edition);

--- Removed "flag, packaging, transportation, storage" (see 8 of 2009 edition);

--- Removed the appendix "Test methods for isocenter locations" (see Appendix A of the 2009 edition);

--- Added "Measurement method for absorbed dose rate" (see Appendix A).

1 Scope

This standard specifies the requirements and test methods for the Cobalt-60 remote treatment machine.

This standard applies to the cobalt-60 remote treatment machine (hereinafter referred to as the treatment machine), which is mainly used for medical treatment for radiation therapy.

2 Normative references

The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this document. For undated references, the latest edition (including all amendments) applies to this document.

GB 9706.1 Medical electrical equipment - Part 1. General requirements for safety

GB 9706.17 Medical electrical equipment - Part 2. Particular requirements for safety of gamma beam therapy equipment

GB/T 17857 Medical radiology terms (radiation therapy, nuclear medicine and radiation dosimetry equipment) A mechanism that stores functions such as storing a radiation source and emitting a radiation beam.

YY 0505 Medical electrical equipment - Part 1-2. Safety general requirements. Parallel standard. Electromagnetic compatibility requirements and testing

3 Terms and definitions

The following terms and definitions as defined in GB 9706.1, GB 9706.17 and GB/T 17857 apply to this document.

4 Requirements