preamble_507
Council Directive 96/49/EC of 23 July 1996 on the approximation of the laws of the Member States with regard to the transport of dangerous goods by rail · European Union
1.2.2.3. Pressures of all kinds relating to receptacles (such as test pressure, internal pressure, safety valve opening pressure) are always indicated in gauge pressure (pressure in excess of atmospheric pressure); however, the vapour pressure of substances is always expressed in absolute pressure.
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Source: EUR-Lex (Cellar) · retrieved 2026-10-31 · Text as adopted (Official Journal); later amendments are not incorporated in this text.