HG/T 3661.2-1999 Fuel gas for welding and cutting - Propane HG/T3661.2-1999 Standard download decompression password: www.bzxz.net

Package number: 4082--1999
HG/T3661.2-1999
This standard is formulated based on the existing relevant national standards and enterprise standards in my country, combined with the actual situation of various refineries in my country and the experience of promotion and application. The main technical indicators are: propane purity is greater than or equal to 95×10-2, sulfur content is less than or equal to 15mg/m; the determination of propane content and sulfur content in the test method is equivalent to the petrochemical industry standard SH/T0230-1992 "Determination of liquefied petroleum gas composition (chromatographic method)" and SH/T0222-1992 "Determination of total sulfur content of liquefied petroleum gas (coulometric method)". Sampling, packaging, filling, marking, safety, storage and transportation requirements are all based on relevant national standards. This standard was proposed by the Technical Supervision Department of the former Ministry of Chemical Industry of the People's Republic of China. This standard is under the jurisdiction of the National Gas Standardization Technical Committee. The main drafting units of this standard: Harbin Welding Research Institute, Southwest Chemical Research and Design Institute. The drafting units of this standard are Harbin Refinery and Shanghai Shenheng Gas Company. The main drafters of this standard are Wen Zhonghe, Chen Yali, Wen Lixing and Shi Weizhen. 680
Chemical Industry Standard of the People's Republic of China
Burning gases for welding and cuttingPropane
Burning gases for welding and cuttingPropaneHG/T 3661. 2—1999
This standard specifies the requirements, test methods, packaging, marking, transportation, safety and storage of propane for welding and cutting. This standard is applicable to propane extracted from catalytic cracking gas in refineries, or propane obtained from oil and gas extraction and petroleum processing, and is mainly used for metal flame cutting and welding of non-ferrous metals such as aluminum and carbon steel thin plates (less than or equal to 2 mm). Molecular formula: C, Hg
Relative molecular mass: 44.097 (according to the 1997 International Relative Atomic Mass) 2 Reference standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When this standard is published, the versions shown are valid. All standards will be revised, and the parties using this standard should explore the possibility of using the latest versions of the following standards. GB 190--1990
Marking of dangerous goods packaging
GB 5100—1994
GB 7144—1986
GB 9448—1988
Welded steel cylinders
Color marking of gas cylinders
Safety of welding and cutting
GB 13075—1981
GB 14193—1993
Periodic inspection and assessment of welded steel cylinders
Regulations on filling of liquefied gas cylinders
SH/T 0222--1992
SH/T 0230—1992
Determination of total sulfur content of liquefied petroleum gas (coulometry)Determination of composition of liquefied petroleum gas (chromatography)SH 0233—1992
Liquefied petroleum gas sampling method
3 Requirements
The technical indicators of propane gas for welding and cutting shall meet the requirements of Table 1. Table 1 Indicators
Propane content 10-2 (volume fraction)
Total sulfur content, mg/ms
4 Test method
4.1 Determination of propane content
According to the provisions of SH/T0230.
4.2 Determination of total sulfur content
According to the provisions of SH/T0222.
Approved by the State Administration of Petroleum and Chemical Industry on August 12, 1999
Implementation on October 1, 2000
5 Inspection rules
HG/T3661.2—1999
5.1 Sampling method shall be carried out in accordance with the method specified in SH0233. 5.2 Bottled propane shall be sampled and tested randomly according to the provisions of Table 2. If any of the indicators in the test results do not meet the requirements of this standard, double sampling shall be conducted from the same batch of products. If there is still one indicator that does not meet the requirements of this standard, the batch of products shall be unqualified. Table 2 Sampling table
Product batch, bottle
Number of sampling bottles, bottle
51~100
101~500
5.3 Propane transported in pipeline form shall be sampled and tested at least once within 4 hours. When any of the indicators in the test results do not meet the requirements of this standard, the products within the 4 hours shall be unqualified. 5.4 Propane supplied by storage tanks shall be sampled from each storage tank for inspection. When any of the indicators in the test results do not meet the requirements of this standard, the product shall be unqualified.
5.5 The manufacturer or gas supply station shall ensure that all products meet the requirements of this standard. 5.6 The user has the right to conduct inspection and acceptance in accordance with the provisions of this standard. 5.7 When the supply and demand parties have any objection to the product quality, both parties shall jointly inspect and accept or apply for arbitration. 6 Packaging, marking and safetybzxZ.net
6.1 The packaging container shall comply with the provisions of GB5100, and propane cylinders must be dedicated. 6.2 The filling shall comply with the weighing and measurement provisions of GB14193, and the filling coefficient is 0.41kg/L. 6.3 The storage and transportation of propane containers shall comply with the relevant provisions of the "Regulations on Safety Supervision of Pressure Vessels" and the "Regulations on the Transportation of Dangerous Goods". 6.4 The packaging markings of gas cylinders shall comply with the provisions of GB190.GB7144 and the "Regulations on Safety Supervision of Gas Cylinders". The words "Propane for Welding and Cutting" shall be marked on the gas cylinder.
6.5 Safety
6.5.1 The use and management of propane for welding and cutting shall comply with the provisions of GB9448, GB13075 and the "Regulations on the Safety Management of Urban Gas". 6.5.2 Propane is a flammable substance. It is explosive when exposed to sparks or high heat. It is explosive when mixed with air or oxygen in a certain proportion. The explosion limit of propane in air is 2.3%~9.5% (volume fraction). 6.5.3 Gas cylinders containing propane cannot be transported or stored in the same vehicle with oxidizing substances such as oxygen. 6.5.4 Gas cylinders containing propane should be stored in a cool and ventilated warehouse, away from fire and heat sources, and prevent direct sunlight. 6.5.5 When in use, it should be placed 10 m away from open flames and away from radioactive radiation sources. 6.5.6 The gas in the gas cylinder should not be exhausted. The gas cylinder returned for refilling should have a residual pressure of not less than 0.05 MPa. 6.6 Propane should be accompanied by a quality certificate when leaving the factory, the contents of which should include: a) product name; b) manufacturer name; c) production date and batch number; d) product mass (kg); e) code of this standard.
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