Safe Handling of Tank Containers - ITCO

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ICHCA International Safety Panel Briefing Pamphlet No 30 These instructions apply to liquid and solid substances of classes 3 to 9. Instruction Min test pressure (bar) Min shell thickness Pressure-relief provision Bottom opening provision T1 1.5 See 6.7.2.4.2 Normal See 6.7.2.6.2 T2 1.5 See 6.7.2.4.2 Normal See 6.7.2.6.3 T3 2.65 See 6.7.2.4.2 Normal See 6.7.2.6.2 Table A5.1 A5.1.3.6 When no Instruction appears in the Dangerous Goods List, transport of the substance in portable tanks is not permitted unless a competent authority approval is granted. A5.1.3.7 Special Provisions are assigned to specific dangerous goods in column 14 of the Dangerous Goods List in chapter 3.2. Each Special Provision is identified by an alpha-numeric designation (TP1 to TP91). Examples of Special Provisions are shown in Table A5.2: TP7 Air shall be eliminated from the vapour space by nitrogen or other means TP13 Self-contained breathing apparatus shall be provided when this substance is transported TP20 This substance shall only be transported in insulated tanks under a nitrogen blanket Table A5.2 A5.1.3.8 When a specific portable tank instruction is specified in the Dangerous Goods List, additional portable tanks which possess higher test pressures, greater shell thicknesses, more stringent bottom opening and pressure relief device arrangements may be used. A5.1.4 Dangerous goods are assigned UN numbers and proper shipping names according to their hazard classification and their composition. Dangerous goods commonly carried are listed in the Dangerous Goods List. A5.1.5 Where an article or substance is specifically listed by name (proper shipping name) this is the name that must be used for transportation documents. Example UN 1090 Acetone A5.1.6 UN numbers are also given for clearly defined groups of substances or articles. Example UN 1133 Adhesives A5.1.7 For dangerous goods not specifically listed by name “Not Otherwise Specified” (NOS) is used to cover a group of substances or articles. A5.1.8 Specific NOS entries covering a group of substances or articles of a particular chemical or technical nature Example UN 1477 Nitrates, Inorganic, NOS Page 64 ©ICHCA International Limited
ICHCA International Safety Panel Briefing Pamphlet No 30 A5.1.9 General NOS entries covering a group of substances or articles meeting the criteria of one or more classes or divisions. When general NOS entries are made, the actual chemical name (the technical name) must be given in brackets as part of the PSN Example UN 1993 Flammable Liquid, NOS (Aluminium Martinate) A5.1.10 A mixture or solution containing a single dangerous substance specifically listed by name in the dangerous goods list and one or more substances not subject to regulation is assigned the UN number and proper shipping name of the dangerous substance. A5.1.11 The exceptions to the above are if the solution is specifically identified by name in the Dangerous Goods List or if the entry into the Dangerous Goods List specifically indicates that it applies to a pure substance. If the hazard class or division or physical state or packing group of the solution or mixture is different from that of the dangerous substance, there can be a significant change in the measures to be taken in emergencies. A5.1.12 For a solution or mixture where the hazard class, the physical state or packing group is changed in comparison with the listed substance, the appropriate NOS entry shall be used including its packing and labelling provisions A5.2 Marine Pollutants A5.2.1 Figure A5.1 shows the mark / placard used for Environmentally Hazardous Substances (Aquatic Environment) which are known as marine pollutants in the IMDG Code. A5.2.2 Marine pollutants shall be transported under the appropriate entry according to their properties if they fall within the criteria of any of the classes 1 to 8. If they do not fall within the criteria of these classes, they shall be transported under entry; ENVIRONMENTALLY HAZARDOUS SUBSTANCE, Figure A5.1 SOLID, N.O.S., UN 3077 or ENVIRONMENTALLY HAZARDOUS SUBSTANCE, LIQUID, N.O.S., UN 3082, as appropriate, unless there is a specific entry for the substance in class 9. A5.2.3 Column 4 of the Dangerous Goods List in the IMDG Code provides information on marine pollutants using the symbol “P”. A5.2.4 When a substance, material or article possesses properties that meet the criteria of a marine pollutant but is not identified in the IMDG Code, such substance, material or article shall be transported as a marine pollutant in accordance with the IMDG Code. A5.3 Wastes A5.3.1 Wastes, which are dangerous goods, shall be transported in accordance with the relevant international recommendations and conventions and, in particular, where it concerns transport by sea, with the provisions of the IMDG Code. Page 65 ©ICHCA International Limited
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