UN ECOSOC Transport of Dangerous Goods Sub-Committee, 56th Session, 4 December – 10 December 2019

The report from this latest of the sub-committee meeting produced the following items which may have relevance to members generally or to particular sectors –

INF.3 (Sweden) Review of GHS Chapter 2.1 (explosives) +INF.8 (Sweden) Advance draft of a new Chapter 2.1 for the GHS

Sweden presented to the meeting the above papers for information. Members are asked to consider the draft of the new chapter in Information paper 8 and, if they have any comments please raise them at the earliest opportunity.

The full papers submitted on this item can be found at – www.unece.org/fileadmin/DAM/trans/doc/2019/dgac10c3/UN-SCETDG-56-INF08e-UN-SCEGHS-38-INF06e.pdf

Paper – 2019/64 (CEFIC) Temperature control of energetic samples

This paper proposed where the self-accelerating decomposition temperature (SADT) of a substance is unknown, differential scanning calorimetry (DSC) data can be used to determine the need for and – if necessary – the requirements for temperature control during transport. The paper proposed that if the decomposition onset temperature is found to be greater than 160 degrees Celsius by DSC, the SADT may be assumed to be > 55 degrees Celsius, and temperature control is thus not required.

Many delegations, including China, Germany and the USA expressed general support for the proposal but asked for more time to review them. France was willing to support the proposal as presented. The US delegation suggested the Sub-Committee agree to the text but place it in square brackets for a final review from the Explosives working group.

There was no substantive opposition to the proposals. CEFIC and many other delegations were happy with the USA suggestion so the decision was that the text was placed square brackets and will be referred to the Explosives working group for final confirmation.

2019/61 (COSTHA) New entry for aerosol generating, fire suppression devices + INF.28 (France) Comment on document ST/SG/AC.10/C.3/2019/61+INF.51 (France & COSTHA)

The paper proposed a new entry in the dangerous goods list for ‘Aerosol generating, fire suppression device’ in order to reduce confusion over the classification of such devices and increase overall safety. The paper proposed adding a new Special Provision to go alongside the new entry. COSTHA suggest the Special Provision should be similar to SP280 but tailored to articles assigned to the new DGL entry. INF. 28 suggested that limiting the scope of the proposed new entry to only aerosol generating devices is too restrictive and too technology orientated. INF.28 included two options – Option 1: proposed amending the proposed new entry from COSTHA by making it more neutral/generic. Option 2: proposed extending the scope of UN 3268.

Following a lengthy discussions by the delegations on the approach to these articles in which the comments raised and discussed included;

  • avoiding a possibility for confusion with UN 3268, (an explanation would need to be included to outline that all systems would be under the new UN number not partly under UN 3268
  • how the two components are shipped, as outlined in 2019/61
  • the requirement to consider the chemicals etc which form part of these articles
  • requests for evidence that a Class 1 classification was required in this case.
  • the scope of tests involved in determining.

Amongst the discussions delegates suggested that the Explosives Working Group (EWG) should review the paper. The Chair noted the Sub-Committee interest in this issue and that the group wants to resolve it. The Chair agreed to a technical review by the explosives working group. for their considerations of this issue. It was resolved that COSTHA would develop INF.51 into a formal paper to be reviewed by the EWG at the next session. The EWG will welcome any written comments between sessions.

The official reports for all items from this meeting can be located at the UNECE website unece.org/trans/main/dgdb/dgsubc3/c3rep.html. The documents are indexed as ST/SG/AC.10/C.3/112 and ST/SG/AC.10/C.3/112/Add.1

If members have any queries on the reports or outcomes from this meeting please contact the Department for Transport Dangerous Goods Team at – dangerousgoods@dft.gsi.gov.uk

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