ISO 4256:1996 PDF

Scope: This International Standard describes a method for the determination of gauge vapour pressures of liquefied petroleum gas products (see clause 3) at temper-atures within the approximate range of 35 ℃ to 70 ℃. NOTES 1 Information on the vapour pressure of liquefied petro-leum gases is required for the selection of properly de-signed storage vessels, shipping containers and customer utilization equipment, to ensure the safe handling of these products, and to ensure that maximum operating design pressures are not exceeded under the foreseen ambient operating conditions. 2 The vapour pressure of liquefied petroleum gases is an indirect measure of the lowest temperature at which initial vaporization can be expected to occur. It may also be con-sidered to be an indirect indication of the most volatile con-stituent present in the product.

ISO 4256:1996 history

1996 ISO 4256:1996 Liquefied petroleum gases - Determination of gauge vapour pressure - LPG method
1978 ISO 4256:1978 Liquefied petroleum gases; Determination of vapour pressure; LPG method