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The proposal was widely supported but it was pointed out that there was a further omission in 7.1.5, where there should be wording on temperature control during transport. Germany promised a follow-up proposal to cover this. In the meantime, the original proposal was adopted but in square brackets for now in case the subsequent paper has a impact on the documentation requirements. It consists merely of adding “and polymerising substance” after “self- reactive substances” in the heading and text of 5.4.1.5.5.
PACKAGING ISSUES • Germany followed up on discussions at the previous session with a new informal document on specifying the temperature of the water used in hydraulic pressure testing of plastics packagings and receptacles. The German expert said the water temperature can have a significant effect on test results.
Opinions among the Sub-committee
• Germany proposed an amendment to 5.2.2.2.1.1.3 to ensure that, if the size of labels is reduced to fit a small package, the symbols are still legible. This proved agreeable to the Sub-committee and that paragraph will now read: If the size of the package so requires, the dimensions may be reduced proportionally, provided the symbols and other elements of the label remain clearly visible. Dimensions for cylinders shall comply with 5.2.2.2.1.2. • Russia proposed an amendment to 5.2.2.2.2 to present Class 1 specimen labels in tabular form. This too was adopted without demur. • Germany proposed that a requirement be inserted to require the emergency and control temperatures to be indicated in the transport document for polymerising substances that require temperature control during transport. This would mirror similar provisions applicable to organic peroxides and self-reactive substances. It seemed that the provision had inadvertently been omitted when prescriptions on polymerising substances had been introduced into the Model Regulations.
“THE FINAL TEXT
OF THE 20TH REVISED EDITION OF THE UN
MODEL REGULATIONS IS DUE TO BE ADOPTED THIS COMING DECEMBER”
were, though, divided; some questioned the need for the change while others felt that this could improve repeatability. With no consensus reached, Germany will return to the next session with another proposal. • The Russian expert said the terms “conductive” and “non-conductive”, which appear in some provisions, are unclear. Do they refer to electrical or thermal conductivity? There have been problems in translating them into Russian. It was proposed that they be replaced by “electrically conductive” and “electrically non-conductive”. The Sub-committee asked for the proposal to be made through an official proposal at the next session. • Norway and Germany continued to press for what seems a sensible and important change relating to packagings for infectious substances. A problem has been identified insofar as the currently applicable packing instructions P620 and P650 envisage the use of small packagings, whereas outbreaks of disease, such as the recent Ebola virus cases, can generate large volumes of clinical waste. The Sub-committee supported the principle
of revising the packing instructions but failed to reach consensus on how this could best be
HCB MONTHLY | SEPTEMBER 2016
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