联合国危险货物运输专家委员会（TDG）第41次会议提案19
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Committee of Experts on the Transport of Dangerous Goods and on the Globally Harmonized System of Classification and Labelling of Chemicals
Sub-Committee of Experts on the Transport of Dangerous Goods
Forty-first session
Geneva, 25 June – 4 July 2012
Item 3 (a) of the provisional agenda
Listing, classification and packing: proposals of amendments
to the list of dangerous goods of Chapter 3.2
Ammonium nitrate description
Transmitted by the Australian Explosives Industry Safety Group (AEISG)
Introduction
1. There are two entries for ammonium nitrate in the Dangerous Goods List in Chapter 3.2 of the Model Regulations, and they have different criteria for describing the combustible content. This paper proposes to standardise this description.
|
UN No. |
Name and description |
Class or division |
|
1942 |
AMMONIUM NITRATE, with not more than 0.2% total combustible material, including any organic substance, calculated as carbon to the exclusion of any other added substance |
5.1 |
|
0222 |
AMMONIUM NITRATE with more than 0.2% combustible substances, including any organic substance calculated as carbon, to the exclusion of any other added substance |
1.1D |
2. The names and descriptions for the ammonium nitrate entries contained in Column 2 of the Dangerous Goods List are not consistent, despite the 0.2% organic carbon level being used as one of the determining factors between the two entries.
Discussion
3. As a result of the placement of the commas in the descriptions for the two ammonium nitrate entries, the 0.2% combustible materials/substances level is measured in two different ways.
4. In UN1942, the combustible material, including any organic substance, is all calculated as carbon.
5. In UN0222, the combustible substances include organic substances calculated as carbon, i.e combustible substances (other than organic) are not calculated as carbon. This would lead to different analyses and different, non-comparable results.
Proposal
6. It is proposed to EITHER:
(a) Amend the entry for Ammonium Nitrate, UN0222, in Column 2 of the Dangerous Goods List so that it is consistent with the Column 2 entry for Ammonium Nitrate, UN1942. It would therefore read:
“AMMONIUM NITRATE with more than 0.2% combustible material, including any organic substance, calculated as carbon to the exclusion of any other added substance”;
or
(b) Amend the entry for Ammonium Nitrate, UN1942, in Column 2 of the Dangerous Goods List so that it is consistent with the Column 2 entry for Ammonium Nitrate, UN0222. It would therefore read:
“AMMONIUM NITRATE with not more than 0.2% combustible substances, including any organic substance calculated as carbon, to the exclusion of any other added substance”.
联合国危险货物运输专家和全球化学品统一分类和标签制度专家委员会
危险货物运输专家分委员会
第四十一次会议
日内瓦, 2012年6月25日–2012年7月4日
议程第3 (a) 项
列表，分类和包装：对修订3.2章危险货物列表的提案
硝酸铵的说明
由澳大利亚爆炸品工业安全组提交(AEISG)
介绍
1.《规章范本》3.2章危险货物列表对于硝酸铵有两个条目，但它们对于可燃物含量的说明采用不同的标准。本提案旨在统一这些说明。
|
联合国编号 |
名称和说明 |
类别或项别 |
|
1942 |
硝酸铵，含以碳计算的可燃物质总量不大于0.2%，包括任何有机物质，但不包括任何其他添加物质 |
5.1 |
|
0222 |
硝酸铵，含可燃物质大于0.2%，包括以碳计算的任何有机物质，但不包括任何其他添加物质 |
1.1D |
讨论
3. 由于这两个硝酸铵条目的说明中逗号位置的不同，这个0.2%可燃物质含量水平的衡量就产生了两种不同的方式。
4. 在UN1942中，可燃物质，包括任何有机物质，都是以碳计算。
5. 在UN0222中，可燃物质包括了以碳计算的有机物质，也就是说非有机的可燃物质并非以碳计算。这就会导致不同的理解，从而导致不同的、不可比的结果。
提议
6. 建议采取以下一种修改方式：
(a) 对硝酸铵，UN0222的第二列进行修订，使其与UN1942中一致。表述为：
“硝酸铵，含以碳计算的可燃物质总量大于0.2%，包括任何有机物质，但不包括任何其他添加物质”；
或者
(b) 对硝酸铵，UN1942的第二列进行修订，使其与UN0222中一致。表述为：
“硝酸铵，含可燃物质不大于0.2%，包括以碳计算的任何有机物质，但不包括任何其他添加物质”。