BS EN 14893:2006 pdf download – LPG equipment and accessories — Transportable Liquefied Petroleum Gas (LPG) welded steel pressure drums with a capacity between 150 litres and 1 000 litres In no case shall the thickness be less than 2,5 mm. If the materials used for shell and ends are different, the calculation shall be carried out for each component using the appropriate properties. 5.4 Support loadings The drum and supports, if any, shall be designed to withstand the greater of the following; 1) static load when the drum is filled with water. 2) maximum operating mass of the drum subject to 2g acceleration acting vertically down and horizontally, and 1g acting vertically up. Where g is the acceleration due to gravity. This shall be demonstrated by experimental testing or calculation in accordance with a recognised pressure vessel standard or specification, e.g. EN 13445-3. Under the forces defined above, the stresses in the drum and its fastenings shall not exceed the following: a) for general membrane stress in the shell, remote from the supports – the normal design stress as defined in E.1; b) for stresses local to the supports, determined either by experimental analysis or calculation/special analysis – the limits specified in accordance with a recognised pressure vessel standard or specification. e.g. EN 13445-3. 5.5 Lifting lug loadings The lifting lugs shall be designed to accept the maximum loads anticipated during construction and handling in service, applying an acceleration of 2g vertically downwards and an assumed sling angle of 45º. This shall be demonstrated by experimental testing or calculation in accordance with a recognised pressure vessel standard or specification, e.g. EN 13445-3. Stress limits as specified in 5.4 apply. 5.6 Openings 5.6.1 General Drums shall be provided with the minimum number of openings required to satisfy the need for fittings to meet service requirements. Openings shall be positioned and/or grouped in such a way that their fittings can be protected as required by 5.7. For drums not fixed into a protective framework, the openings shall be located in the ends only. 5.6.2 Reinforcement Each opening shall be reinforced by a boss, pad or compensating plate attached by welding and designed in accordance with Annex E. 5.6.3 Position of welds The welds of opening reinforcements shall be clear of longitudinal and circumferential welds and welds of other opening reinforcements by a minimum of 40 mm between the weld edges. 5.6.4...

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