SN/T 3722-2013Specification of safety control on radioactivity of import and export ceramicware (English PDF)

Foreword

This standard was drafted in accordance with GB/T 1.1-2009 given rules.

This standard is proposed and managed by the National Certification and Accreditation Administration Committee.

This standard was drafted. People's Republic of China Hunan Exit Inspection and Quarantine, People's Republic of China Guangdong Entry-Exit Inspection and Quarantine Bureau.

1 Scope

This standard specifies the import and export of ceramic products radiological safety control requirements.

This standard applies to natural radionuclide limits required import and export ceramics for daily use, construction ceramics and sanitary ceramics radioactive safety Full control. This standard does not apply to the import and export of industrial ceramics.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein Member. For undated references, the latest edition (including any amendments) applies to this document.

GB/T 4960.5 nuclear science and technology terminology radiation protection and safety of radiation sources GB 6566 building materials radionuclide limits Exemption WS178 ceramics for daily use of natural radioactive substances CNCA-12C-050 decoration products mandatory certification and implementation rules ceramic tile products

3 Terms and Definitions

GB/T 4960.5, GB 6566 defined by the following terms and definitions apply to this document. For ease of use, the following listed repeatedly the GB/T 4960.5, GB 6566 some terms and definitions.

Ceramics ceramicware in class clay minerals and other natural rock as raw material, processed into firing glazed or unglazed silicate products, including daily-use ceramics, construction Ceramics, sanitary ceramics, which does not include porcelain, refractories and other industrial ceramics.

Radioactive radioactivity Some nuclide spontaneously emit particles or gamma-rays, or in the aftermath of the electron orbit capture emit X-rays, or the occurrence of spontaneous fission nature.

[GB/T 4960.5-1996, the definition 2.1] 3.3 Radionuclide Radioactive nuclides.

[GB/T 4960.5-1996, the definition 2.5] 3.4 Radioactivity specificactivity Certain substances nuclide radioactivity divided by the mass of the material obtained commercially.

Expression. C =