AS 2809.1:2020 Road tank vehicles for dangerous goods Part 1: General requirements for all road tank vehicles.
transverse closure forming a liquid-tight division between adjacent compartments of a tank and which can provide circumferential reinforcement
all structural elements used to protect the tank in the event o1 a rear collision
Note I to entry: This can include the rear underrun protection device, subframe, drum tray etc.
as defined in the ADG Code
load to be transported in the tank
any component that holds or transfers cargo
Note 1 to entry: Examples of a cargo-carrying component are: cargo tank, cargo pipe-work, cargo pump, cargo- meter, cargo air eliminator, cargo hose-reel and hose, cargo jumper/bridger hose. A cargo hose is considered a cargo-carrying component only when connected to a cargo-carrying component.
movement of cargo into or from the road tank vehicle
centroid of the tank
position defined by the geometrical centre of the tank capacity, independent of all masses including tank mass, payload mass etc
ring used in the attachment ofa bulkhead to a tank shell, and having the annular space vented and drained
liquid-tight division ola tank
person who has acquired through training, qualification or experience, or a combination of these, the knowledge and skills enabling that person to perform the task required
any permanent gas enclosed under such conditions that its gauge pressure exceeds 170 kPa when its temperature is 15 °C, or any liquefied gas, as hereunder defined, within a closed container
compressed liquefied gas
gas which on the application of pressure liquefies at normal ambient temperatures, and which is Class 2 dangerous goods as defined in the ADG Code
Class 8 dangerous goods as defined in the ADG Code
cryogenic liquid (refrigerated)
liquefied gas having a boiling point below —90 °C at atmospheric pressure (101.325 kPa absolute)
any material which conforms with the definition of dangerous goods as published in the ADG Code
panel designed to stop or redirect cargo released due to a failed cargo-carrying component, a panel designed to prevent cargo from making contact with components
as defined in the ADG code
maximum allowable working pressure in a tank, pipe or component
valve normally in the open position, which closes automatically when the flow in the direction for which the valve was designed exceeds a predetermined limit specified by the manufacturer, and which re-opens when the conditions which resulted in closure are no longer present
Class 3 liquid dangerous goods as defined in the ADG Code
acceleration due to gravity (9.81 m/s2)
area in which an explosive gas atmosphere is, or may be expected to e, present in quantities sucn as to require special precautions for the construction, installation and use of equipment
[SOURCE: AS/NZS 60079.10.1]
transverse liquid-tight closure at the end of a tank
any part of a vehicle propulsion engine, auxiliary engine, or exhaust system that can attain or exceed a temperature of 180 °C
Note 1 to entry: If the auto ignition temperature of the cargo is less than 200 °C then any component that can attain or exceed a temperature of 20 °C below the auto ignition temperature of the cargo, is considered a hot component.
any condition that is likely to produce a source of ignition or be an ignition source
Note 1 to entry: Examples of hot work include the following:
(a) Welding or flame cutting equipment.AS 2809.1 pdf download.