Amendments to the Australian Code for the Transport of Dangerous Goods by Road and Rail (Edition 7.3)
Table 3.2 - Australian names phased out
Table 3.2 of ADG 7 allowed the use of alternate uniquely Australian shipping names for certain United Nations (UN) entries named in Chapter 3.2 Dangerous Goods List, but only for land transport within Australia.
Table 3.2 and clause 18.104.22.168 have been amended. In ADG7.3, Table 3.2 has omitted all Australian "[AUST.]" entries that Note F flagged as "should be phased out", and these will not be permitted after 1 July 2015. They are:
- UN 1999: Asphalt Cut Backs; Bitumen Cut Backs; Cut Backs, Asphalt; Cut Backs, Bitumen.
- UN 1263 or UN 3066: Driers Paint or Varnish, Liquid; NOS, Enamel; Fillers, Liquid; Lacquer; Polish; Stains; Varnish; Thinners; Thinning Liquid.
- UN 2252: Ethylene Glycol Dimethylether.
- UN 1593: Methylene Chloride.
Clause 6.11.3 - New guidelines for underslung segregation devices
Dangerous goods of Packing Groups II and III may be transported with incompatible goods, where the incompatible dangerous goods are packed in a segregation device or in some other method of segregation approved by the Competent Authority.
Segregation devices fitted below the main load area (ie underslung segregation devices) without a Competent Authority approval may be used where they meet the definition of a Type 1 device as set out in section 6.11.3. Specific approval by the Competent Authority is required for any proposed underslung segregation device that does not comply with Type 1 criteria (eg capacity greater than 450 litres, or it is of unusual construction or form of attachment).
ADG 7.3 contains a new section 6.11.7 that gives guidelines on the design and approval for all non-Type 1 underslung segregation devices.
Clause 22.214.171.124 - Ventilation of flammable and toxic gases and oxygen
Under ADG 7.3, as previously for ADG 7, section 126.96.36.199 contains the requirement to ventilate transport units and compartments to prevent the build-up of vapours that are likely to increase risk whenever transporting a placard load of any flammable or toxic gases, or oxygen, or gases with a flammability as a subsidiary risk.
Roof vents in closed vehicles transporting flammable gases are not sufficient for good ventilation. Some flammable gases tend to sit in the lower parts of transport units.
Requirements for additional venting that allows air circulation through the bottom of a vehicle has been added to section 188.8.131.52 in ADG 7.3.
Clause 10.2.3.7 - Transfer of bitumen from moving vehicle
A general requirement covered by section 10.2.3 of ADG 7 prohibited the transfer of dangerous goods (liquids and gases) into or out of a moving vehicle. An exemption from clause 10.2.3 was granted by the Competent Authorities Panel permitting the transfer of bitumen to road-making equipment where the vehicles are coupled together and moving.
This exemption has been incorporated into a new clause 10.2.3.7 in ADG 7.3 to allow this practice without an exemption.
Clause 10.3.1.2.3 - Ullage requirements for vacuum tankers do not apply
It has been recognised that it is not practical to enforce ADG 7 ullage requirements for vacuum tankers.
Clause 10.3.1.2.3 has been amended to exempt waste dangerous goods transport in vacuum tank vehicles from compliance with ullage requirements.
Clause 10.3.2.1 - Maximum permitted filling ratio for tank vehicles with gases in a liquefied form
The filling ratio is the ratio of the mass of gas to the mass of water at 15°C that would fill completely a pressure receptacle fitted ready for use.
In order to prevent overfilling and overpressures in tanks for non-refrigerated liquefied gases, the maximum filling ratio required by section 10.3.2 of ADG 7 must not be exceeded. Until now a national exemption granted by the Competent Authorities Panel allowing a filling ratio for propane of 0.45 for tank vehicles with a capacity greater than 5000 litres applied.
Clause 10.3.2.1 has now been amended to replace this exemption.
Clause 184.108.40.206 and 220.127.116.11 - Transport documents need to be in the emergency information holder
Section 11.1.4 specifies that transport documents need to be carried in a specially fitted emergency information holder. This requirement needed further clarity.
Two new clauses 18.104.22.168 and 22.214.171.124 were included in ADG 7.3.
Clause 126.96.36.199 and 188.8.131.52 - Maintenance of fire extinguisher
Clause 184.108.40.206 of ADG 7 required fire extinguishers to comply with the general requirements for portable fire extinguishers under AS/NZS 1841.1 and with requirements for classification, rating and performance testing under AS/NZS 1850.
A new provision in ADG7.3 adds a reference to AS 1851 at clause 220.127.116.11(a).
References to AS/NZS 1841.6 and 1841.7 were not relevant and have been removed.
Clause 18.104.22.168.4(b) has been amended to clarify location requirements for fire extinguishers.
A new clause 22.214.171.124.5 has been added to clarify positioning of fire extinguishers in the cabin and Table 12.1 has been amended accordingly.
Clause 126.96.36.199.2.4 - Parking exemption for dangerous goods vehicles in places without public access
A new clause 188.8.131.52.2.4 has been added in ADG 7.3 to exempt dangerous goods vehicles in areas not subject to public access from requirements of clause 184.108.40.206.2.1(d).
Clauses 220.127.116.11.2.5 and 18.104.22.168.2.6 - Vehicles carrying a placard load of acid batteries may park in public places
Amendments were made to allow vehicles with placard loads containing acid batteries (UN 2794) to park in public places and residential areas provided requirements of 22.214.171.124.2.5 and 126.96.36.199.2.6 are met.