BS EN 14678-3-2013 pdf download.LPG equipment and accessories Construction and performance of LPG equipment for automotive filling stations Part 3: Refuelling installations at commercial and industrial premises.
3.14
submersible pump
pump which is completely or partially immersed in the liquid LPG
3.15
external pump
pump WhiCh is installed on the LPG delivery pipe-woric
3.16
hazardous area
area In which an explosive atmosphere is or may be present, in a quantity such as to require special precautions for the construction and installation of equipment and use of apparatus
3.17
breakaway coupling
coupling which separates at a predetermined section when required and each separated section contains a self-closing shut-off valve, which seals automatically
Note 1 to entry: Also referred to as a safe break.
3.18
break point
weakened section in a pipe or fitting intended to break when excessive force is applied
3.19
installer
person or organisation who, by qualification, training, experience and resources assumes technical responsibility for the installation of an LPG filling station
4 Requirements
4.1 Environmental
4.1.1 The manufacturer shall endeavour to acquire matenals and components from suppliers who have a declared environmental policy, see EN ISO 14021, EN ISO 14024 and EN ISO 14025.
4.1.2 Materials should be selected to optimise product durability and lifetime and consideration should be made to avoiding the selection of rare or hazardous materials.
4.1.3 Consideration should be made to use recycled or reused materials, and to the selection of materials which can then be subsequently recycled.
4.1.4 The installer shall endeavour to minimise use and wastage of material during all the installation process, with particular attention to welding and allied processes. Unavoidable wastelscrap material shall be recycled.
4.2.5 Remotely operated shut-off valves fitted to the liquid outlet of the storage vessel shall be of the normally closed type. Other remotely operated shut-off valves fitted in the system may be of the normally open position provided that safety is not compromised.
4.2.6 All equipment and components shall be installed according to the manufacturer’s instructions and tested according to the procedures described in Clause 5 and Clause 6.
4.2.7 Dispensing equipment shall include a pump, a delivery hose complete with breakaway coupling, filling nozzle and operational dead man type shut-off device.
4.2.8 Pipework and equipment shall be:
— secured to prevent excessive movement of pipes:
— located to reduce the possibility of impact damage from vehicles or mobile equipment; and
— protected where necessary, e.g. with bollards or barriers.
4.3 DesIgn pressure
The design pressure for the components subject to pressure, other than the pressure vessel and its pressure
relief valve, shall be at least 2 500 kPa (25 bar).
4.4 Design temperature
The maximum design temperature shall be 40 °C.
The minimum design temperature shall be -20 C.
For operating conditions outside the above range. different design temperature(s) shall be agreed with the manufacturer and suitably marked.
For some parts of Europe and certain applications, temperatures Power than -20 °C can be encountered and for these applications, the minimum design temperature shall be -40 C.
4.5 Materials
4.5.1 All materials in contact with LPG shall be compatible with LPG in the liquid phase. Materials exposed to corrosive environments shall be corrosion resistant or protected against corrosion.
4.5.2 Non-conductive materials exposed to potentially explosive atmospheres, which are susceptible to electrostatic charge, shall comply with EN 13463-1.
4.5.3 All elastomenc materials in contact with LPG shall be compatible with LPG and shall not distort. harden or adhere to other components to such an extent as to impair the function of those components. Rubber materials shall conform to the requirements of EN 549. For guidance on the selection of non-metallic materials see EN ISO 11114-2.
4.6 LPG storage
4.6.1 Design
Pressure vessels with a volume not greater than 13 m3 shall be designed and manufactured to EN 12542 or the equivalent.
Pressure vessels with a volume greater than 13 m3 shall comply with EN 13445 (all parts) or equivalent.
4.6.2 Installation
The pressure vessel shall be installed in a fixed position either overground, underground or mounded, in accordance with the instructions provided by the pressure vesse’ manufacturer, See Annex A for installation examples.
Adequate provisions shall be taken to avoid movement of the pressure vessel In respect to the surrounding ground.
4.6.3 Equipping
Pressure vessels with a volume not greater than 13 m3 shall be equipped in accordance with EN 14570. Larger vessels shall be equipped in accordance with national requirements.
The following pressure vessel connections are also required:
— vapour return when required by design of dispensing equipment:
— a means of safely emptying the pressure vessel:
vapour balance for multiple pressure vessels in a group: and
drain.
4.6.4 MechanIcal protection
Adequate means shall be provided to protect the pressure vessel and ancillary components from mechanical damage.BS EN 14678-3-2013 pdf download.