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GB/T 39090-2020: Adiabatic storage test method for dangerous goods
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| GB/T 39090-2020 | English | 259 |
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Adiabatic storage test method for dangerous goods
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GB/T 39090-2020
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PDF similar to GB/T 39090-2020
Standard similar to GB/T 39090-2020 GB/T 41854 GB/T 39093 GB/T 39448 GB 12268 Basic data | Standard ID | GB/T 39090-2020 (GB/T39090-2020) | | Description (Translated English) | Adiabatic storage test method for dangerous goods | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | A80 | | Classification of International Standard | 13.300 | | Word Count Estimation | 14,168 | | Date of Issue | 2020-09-29 | | Date of Implementation | 2021-04-01 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 39090-2020: Adiabatic storage test method for dangerous goods---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Adiabatic storage test method for dangerous goods
ICS 13.300
A80
National Standards of People's Republic of China
Dangerous goods adiabatic storage test method
2020-09-29 released
Implementation on 2021-04-01
State Administration for Market Regulation
Issued by the National Standardization Management Committee
Table of contents
Preface Ⅲ
1 Scope 1
2 Terms and definitions 1
3 Safety measures 1
4 Test equipment 1
5 Test Step 2
6 Data processing 2
7 Test report 3
Appendix A (informative appendix) Adiabatic storage test device 5
Appendix B (informative appendix) Calculation of heat loss rate (L) per unit mass of packaging, IBC or tank 6
Appendix C (informative appendix) Example 7 for determining the self-accelerating decomposition temperature
Appendix D (Informative Appendix) Example 8 of Dangerous Goods Adiabatic Storage Test Results
Foreword
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
This standard was proposed and managed by the National Standardization Technical Committee for Management of Hazardous Chemicals (SAC/TC251).
Drafting organizations of this standard. Chemical Registration Center of Ministry of Emergency Management, Qingdao Safety Engineering Research Institute of China Petroleum and Chemical Corporation,
Nanjing University of Science and Technology, Nanjing Customs Dangerous Goods and Packaging Inspection Center, China Chemical Industry Economic and Technological Development Center.
The main drafters of this standard. Wang Yaqin, Huang Fei, Zhang Jinmei, Guo Lu, Wang Kang, Zhang Huiguang, Wu Baoyi, Xu Sen, Wang Hongsong, Cao Mengran.
Dangerous goods adiabatic storage test method
Warning---This test has potential explosion hazard. It should be ensured that the test equipment has sufficient protection for test personnel to avoid explosion
Catastrophic consequences.
1 Scope
This standard specifies safety measures, test equipment, test procedures, data processing and test reports for the adiabatic storage test of dangerous goods.
This standard applies to the adiabatic storage test of dangerous goods.
2 Terms and definitions
The following terms and definitions apply to this document.
2.1
Self-accelerating decomposition temperature self-acceleratingdecomposition temperature; SADT
The lowest ambient temperature at which self-accelerating decomposition of the substance may occur in a container used for transportation.
[GB 21178-2007,3.3]
Note. The adiabatic storage test of dangerous goods is used to determine the heating rate of dangerous goods with temperature, and the obtained heating parameters are combined with the heat loss data of the relevant packaging
It is used to determine the self-accelerating decomposition temperature of dangerous goods in its container. It is suitable for every type of container, including medium-sized bulk containers and tanks.
3 Security measures
3.1 If the cooling system is turned on when the heat generation rate exceeds the cooling capacity of the cooling system, the sample may explode. So it should be opened in time
Cooling system and choose a safe test site to minimize possible explosion hazards and decomposition products to cause gas explosions
(Second explosion) danger.
3.2 As soon as the test is completed, the sample should be treated safely and harmlessly. The sample may become more unstable and more sensitive after the test. You should be cautious.
deal with.
4 Test equipment
4.1 The test equipment for the adiabatic storage of dangerous goods includes a glass Dewar (1.0L or 1.5L) for the sample, a
A heat-insulating oven with a temperature difference of ±0.1℃ and an inert Dewar cap. Under special circumstances, other materials can be used for the sample container. Pick
A disc tubular internal heater and cooling tube made of inert materials are inserted into the sample through the bottle cap. Insert a 2m length into the heat-insulating bottle cap
The PTFE capillary tube prevents the pressure inside the Dewar from rising. The heating power of the internal heater can be adjusted to heat the
Set temperature or use for calibration. When the sample in the Dewar reaches the preset temperature, it can automatically stop internal heating or start cooling. In addition to the cooling system,
The equipment should also be equipped with auxiliary safety devices to cut off the power supply of the oven when the safe temperature limit is exceeded. Schematic diagram of adiabatic storage test see
Appendix A.
4.2 Use an armored thermocouple or platinum resistance sensor with an accuracy of at least 0.1℃ to measure the temperature of the sample at the center of the sample. Same use
The thermocouple or platinum resistance sensor is measured at the same height as the temperature point of the measurement sample to obtain the ambient temperature in the oven. Need to use continuous
The temperature measuring and recording equipment monitors the sample temperature and the ambient temperature in the oven. The test equipment should be placed in a separate observation area. for
For samples whose self-accelerating decomposition temperature is lower than the ambient temperature, the test should be carried out in a cooling chamber, or a solid carbon dioxide cooling oven.
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