Abstract： AS 2809.3:2021 pdf download.Road tank vehicles for dangerous goods Part 3: Road tank vehicles for compressed liquefied gases. 2 Tanks, accessories and components 2.1 General 2.1.1 Tank design The tank. Its supports and connections, shall co...

AS 2809.3:2021 pdf download.Road tank vehicles for dangerous goods Part 3: Road tank vehicles for compressed liquefied gases.

2 Tanks, accessories and components

2.1 General

2.1.1 Tank design

The tank. Its supports and connections, shall conform to AS 1210 and with any applicable Standard for the particular cargo, with

the following qualifications:

(a) The design pressure shall be not less than the equilibrium vapour pressure for the cargo at a temperature of 46 °C, or not

less than 700 kPa. An LP Gas tank shall be designed for propane unless it Is dedicated to butane service exclusively.

NOTE 1 For those cargoes whose vapour pressure can be below atmospheric pressure at winter temperatures, care should be taken to

account for the possibility ala negative pressure in the tank.

NOTE 2 AS 1210 references AS 2872 which sets out a method for calculating the temperatures and corresponding pressures of fluids In vessels subject to atmospheric and solar heating in the hottest month of the year In various locations in Australia.

(b) The cargo load and static head for calculation of the dynamic loading shall be calculated on the basis of the mass fill ratio

specified in Table 2.1.

(c) Except where otherwise approved, the materials of construction shall be steel alloy that is suitable for and compatible with

the cargo.

(d) Screwed connections to the tank shall not exceed 50 mm nominal bore, except for fully internal safety valves.

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