What is BS EN 14129 - LPG Equipment and accessories about?
BS EN 14129 specifies the requirements for the design and testing of spring-loaded pressure relief valves and thermal expansion valves for use in:
- Static LPG pressure vessels
- LPG pressure vessels on road tankers, rail tankers, tank containers, or demountable tanks
Normative Annex B prescribes testing with conditioning at - 40 °C for valves for use under extremely low-temperature conditions. The requirements for pressure relief valve accessories such as isolating devices, changeover manifolds, and vent pipes are specified in EN 14071.
EN 14570 identifies the requirements for the pressure relief valve capacities for static pressure vessels. EN 12252 identifies the requirements for the pressure relief valve capacities for road tankers. Valves designed in accordance with BS EN 14129 are specifically for use in LPG applications. Valves manufactured in accordance with EN ISO 4126-1 are used in certain LPG applications. Terms used with LPG pressure relief valves are described graphically in Annex A.
Note 1: BS EN 14129 does not address production testing.
Note 2: BS EN 14129 requires measurement of material properties, dimensions, and pressures.
Who is BS EN 14129 - LPG Equipment and accessories for?
BS EN 14129 on LPG Equipment and accessories is useful for:
- LPG manufacturers
- The aerosols industry
- The metal processing industry
- The food and beverages industry
- The construction industry
- The glass/ceramic industry
- Quality assurance management
Why should you use BS EN 14129 - LPG Equipment and accessories?
BS EN 14129 calls for the use of substances and procedures that may be injurious to health and/or the environment if adequate precautions are not taken. BS EN 14129 refers only to technical suitability: BS EN 14129 does not absolve the user from their legal obligations at any stage. Protection of the environment is a key political issue in Europe and elsewhere around the world. Protection of the environment in BS EN 14129 is understood in a very broad sense. The phrase is used, for example, in relation to the total life-cycle aspects of a product on the environment, including the expenditure of energy, and during all phases of its existence, from the mining of raw materials to fabrication, packaging, distribution, use, scrapping, recycling of materials, etc. Annex D comprises an environmental checklist that highlights the clauses of BS EN 14129 that address environmental aspects. Provisions have to be restricted to general guidance. Limit values are specified in national laws. It is recommended that manufacturers develop an environmental management policy. For guidance see the EN ISO 14000 series [6], [7], and [8].
The drafting of BS EN 14129 of its provisions is entrusted to appropriately qualified and experienced people. All pressures are gauge pressures unless otherwise stated. Valves designed in accordance with BS EN 14129 are specifically for use in LPG applications. Valves manufactured in accordance EN ISO 4126-1 may also be used in certain LPG applications.
What’s changed since the last update?
BS EN 14129:2014 supersedes EN 14129:2004, which is withdrawn. BS EN 14129:2014 includes some technical changes with respect to EN 14129:2004. These include:
- Pilot operated pressure relief valve
- An ageing test, see 7.9 and Annex C
- An endurance test, see 7.10
- A stress cracking test, see 7.11
