SN/T 1828.7-2013.Test method of classification for import and export dangerous goods-Part 7: Compressed gases.
1 Scope
SN/T 1828.7 specifies the test and classification of imported and exported compressed gas dangerous goods.
SN/T 1828.7 is applicable to the test of hazardous characteristics of imported and exported compressed gas dangerous goods with a critical temperature less than or equal to -50℃.
2 Normative references
The following documents are indispensable for the application of this document. For all dated application documents, only the version with issue 8 is applicable to this document. For all undated referenced documents, the latest version (including all amendments) is applicable to this document.
SN/T 1828.5 Test methods for classification of dangerous goods for import and export Part 5: Gas mixtures
SN/T 1828.10 Test methods for classification of dangerous goods for import and export Part 10: Toxic gases
SN/T 1828.12 Test methods for classification of dangerous goods for import and export Part 12: Flammable gases
Recommendations on the Transport of Dangerous Goods Model Regulations (United Nations, 17th revised edition)
3 Terms and definitions
The terms and definitions defined in the Recommendations on the Transport of Dangerous Goods Model Regulations) and the following terms apply to this document.
3.1 Compressed gases
Gases that are completely gaseous when packaged under pressure at -50℃ for transport, including all gases with a critical temperature less than or equal to -50℃.
4 Tests
4.1 Flammability test
For the test method, see the provisions of SN/T 1828.12.
4.2 Toxicity test
For the test method, see the provisions of SN/T 1828.10.
4.3 Identification of compressed gas
For the identification process, see Figure A.1 in Appendix A.
5 Classification determination
According to the provisions of SN/T 1828.5, compressed gas is classified into 2.1 flammable gas, 2.2 non-flammable and non-toxic gas and 2.3 toxic gas, of which 2.3 is superior to other items and 2.1 is superior to 2.2.
This part of SN/T 1828 specifies the tests and classification determination of compressed gas dangerous goods for import and export. This part is applicable to the test of hazardous characteristics of compressed gas dangerous goods for import and export with critical temperature less than or equal to -50℃.

People's Republic of China entry-exit inspection and quarantine industry standard SN/T1828.7—2013bzxz.net
Replaces SN/T1828.7-2006
Test method of classification for import and export dangerous goods-Part7:Compressedgases
Published on 2013-11-06
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
Implementation on 2014-06-01
SN/T1828 "Test method of classification for import and export dangerous goods" is divided into 17 parts: Part 1: General;
Part 2: Civilian explosives;
Part 3: Oxidizers:
Part 4: Corrosive substances;
Part 5: Gas mixtures;| |tt||-Part 6: Substances which emit flammable gases in contact with water; Part 7: Compressed gases;
Part 8: Organic peroxides:
Part 9: Toxic substances;
Part 10: Toxic gases;
Part 11: Flammable solids;
Part 12: Flammable gases;
-Part 13: Flammable liquids;
Part 14: Lithium batteries;
Part 15: Self-heating solids;
-Part 16: Nitrates;
-Part 17: Marine pollutants.
This part is Part 7 of SN/T1828.
This part was drafted in accordance with the rules given in GB/T1.1-2009. SN/T1828.7—2013
This part replaces SN/T1828.7—2006 "Test Methods for Classification of Import and Export Dangerous Goods Part 7: Compressed Gases". Compared with SN/T1828.7—2006, the main technical changes of this part are as follows: the document adopted in this part is changed to the United Nations "Recommendations on the Transport of Dangerous Goods Model Regulations" (17th revised edition); in the normative reference documents, the latest version of the referenced standard documents is used; in Appendix A, "Box 2 in Figure A.1 Compressed Gas Identification Flow Chart "Is the vapor pressure at 50℃ greater than 0.3MPa? Or is it all gaseous at 20℃?" is changed to "Is the vapor pressure at 50℃ greater than 0.3MPa? Or is it all gaseous at 20℃ and 101.3kPa? .
Model Regulations" (17th revised edition), and its relevant technical content is completely consistent with the above regulations.
This part is proposed and managed by the National Certification and Accreditation Administration. The drafting units of this part are: Tianjin Exit-Entry Inspection and Quarantine Bureau of the People's Republic of China, Fujian Exit-Entry Inspection and Quarantine Bureau of the People's Republic of China.
The main drafters of this part are: Li Ningtao, Yu Yanjun, Xiong Zhongqiang, Han Wei, Lv Shuiyuan, Du Yu. The previous versions of the standard replaced by this part are: SN/T1828.7-2006.
1 Scope
Classification test methods for dangerous goods for import and export
Part 7: Compressed gases
SN/T1828.7-2013
Warning: Due to the inherent danger, the testing laboratory should pay special attention to the health and safety requirements required by the regulations. This part of SN/T1828 specifies the test and classification determination of dangerous goods for import and export compressed gases. This part is applicable to the test of dangerous characteristics of dangerous goods for import and export compressed gases with a critical temperature less than or equal to -50℃. 2 Normative references
The following documents are indispensable for the application of this document. For any dated application document, only the dated version applies to this document. For any undated referenced document, the latest version (including all amendments) applies to this document. SN/T1828.5 Test methods for classification of dangerous goods for import and export Part 5: Gas mixtures SN/T1828.10 Test methods for classification of dangerous goods for import and export Part 10: Toxic gases SN/T1828.12 Test methods for classification of dangerous goods for import and export Part 12: Flammable gases Recommendations on the Transport of Dangerous Goods Model Regulations (United Nations, 17th revised edition) 3 Terms and definitions
The terms and definitions defined in the Recommendations on the Transport of Dangerous Goods Model Regulations and the following terms apply to this document. 3.1
Compressed gases
compressed gases
Gases that are completely gaseous when packaged under pressure at -50°C for transport, including all gases with a critical temperature less than or equal to -50°C. 4 Tests
4.1 Flammability test
For the test method, see the provisions of SN/T1828.12. 2 Toxicity test
For the test method, see the provisions of SN/T1828.10. 4.3 Discrimination of compressed gas
For the discrimination process, see Appendix A Figure A.1.
Classification determination
According to the provisions of SN/T1828.5, compressed gases are classified into 2.1 flammable gases, 2.2 non-flammable and non-toxic gases, and 2.3 toxic gases, of which 2.3 is superior to other categories, and 2.1 is superior to 2.2. 1
SN/T1828.7—2013
Pure gas or mixture
Appendix A
(Normative Appendix)
Compressed gas identification flow chart
Is the vapor pressure at 50°C greater than 0.3MPa? Or is it all gaseous at 20°C and 101.3kPa? Is it dissolved in a liquid solvent under pressure?
Is the critical temperature above 65°C? 2
Is the critical temperature between -50°C and 65°C? Is it partially liquid due to low temperature? 2
Is it all gaseous at -50°C?
Compressed gas identification flow chart
Unclassified
Dissolved gas
Liquefied gas
Liquefied gas
Refrigerated liquefied gas
Compressed gas
SN/T1828.7-2013
Industry standard of the People's Republic of China for entry-exit inspection and quarantine
Classification test method for import and export dangerous goods
Part 7: Compressed gas
SN/T1828.7—2013
Published by China Standards Press
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