EN 14678-1:2013

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Flüssiggas-Geräte und Ausrüstungsteile - Bau- und Arbeitsweise von Flüssiggas-Geräten für Autogas-Tankstellen - Teil 1: ZapfsäulenEquipements pour GPL et leurs accessoires - Construction et caractéristiques des équipements GPL dans les stations-service - Partie 1: DistributeursLPG equipment and accessories - Construction and performance of LPG equipment for automotive filling stations - Part 1: Dispensers75.200Petroleum products and natural gas handling equipmentICS:Ta slovenski standard je istoveten z:EN 14678-1:2013SIST EN 14678-1:2013en,fr,de01-julij-2013SIST EN 14678-1:2013SLOVENSKI
STANDARDSIST EN 14678-1:2006+A1:20091DGRPHãþD

EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 14678-1
March 2013 ICS 75.200 Supersedes EN 14678-1:2006+A1:2009English Version
LPG equipment and accessories - Construction and performance of LPG equipment for automotive filling stations - Part 1: Dispensers
Equipements pour GPL et leurs accessoires - Construction et caractéristiques des équipements GPL dans les stations-service - Partie 1: Distributeurs
Flüssiggas-Geräte und Ausrüstungsteile - Bau- und Arbeitsweise von Flüssiggas-Geräten für Autogas-Tankstellen - Teil 1: Zapfsäulen This European Standard was approved by CEN on 5 February 2013.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre:
Avenue Marnix 17,
B-1000 Brussels © 2013 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 14678-1:2013: ESIST EN 14678-1:2013

Classification of hazardous areas in and adjacent to the dispenser . 23 A.1 General . 23 A.2 Nozzle area – vapour releases only . 23 A.3 Nozzle boot area . 26 Annex B (normative)
Vapour barriers . 28 B.1 Classification . 28 B.1.1 General . 28 B.1.2 Vapour barrier - Type 1 . 28 B.1.3 Vapour barrier - Type 2 . 28 B.1.4 Air gaps . 28 B.1.5 Screens . 28 B.2 Typical vapour barrier arrangements . 29 Annex C (informative)
Information on explosion protected equipment . 33 Annex D (informative)
Environmental checklist . 34 Annex E (informative)
Significant technical changes between this document and the previous edition of this European Standard . 35 Annex ZA (informative)
Relationship between this European Standard and the Essential Requirements of EU Directive 94/9/EC . 36 Bibliography . 38
 The addition of an environmental checklist. EN 14678 consists of the following parts:  EN 14678-1, LPG equipment and accessories — Construction and performance of LPG equipment for automotive filling stations — Part 1: Dispensers;  EN 14678-2, LPG equipment and accessories — Construction and performance of LPG equipment for automotive filling stations — Part 2: Components other than dispensers and installation requirements;  EN 14678-3, LPG equipment and accessories — Construction and performance of LPG equipment for automotive filling stations — Part 3: Refuelling installations at private and industrial premises. According to the CEN-CENELEC Internal Regulations, the national standards organisations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. SIST EN 14678-1:2013

NOTE Annex D indicates which clauses in this European Standard address environmental issues. Clauses addressing environmental issues are restricted to a general guidance. Limiting values can be specified in national laws. It is recommended that companies using this European Standard develop an environmental management policy. For guidance see ISO 14000 series [15], [16] and [17]. It has been assumed in the drafting of this European Standard that the execution of its provisions is entrusted to appropriately qualified and experienced people. All pressures are gauge unless otherwise specified. The PED, Directive 97/23/EC [20], applies to any assembly with a component defined as category II or higher in this Directive:  Article 1, 3.6 of the PED excludes equipment classified as no higher than category I under article 9 if it is covered by Directive 94/9/EC (ATEX).
 The category I limit is defined in Annex II Table 6 of the PED. It applies to piping for liquids whose vapour pressure at the maximum allowable temperature is greater than 0,5 bar (50 kPa) above DN 100 or, in the case of maximum allowable pressures greater than 10 bar (1 kPa), is above the product of DN and PS of 1 000.  Because the maximum allowable pressure (PS) in this document is 25 bar (2 500 kPa) and the DN of the intended piping is less than 40, the product of DN and PS of 1 000 in Table 6 of the PED is not reached.  The category I limit for vessels is defined in Annex II Table 1 of the PED. It also applies to vessels for liquids whose vapour pressure at the maximum allowable temperature is greater than 0,5 bar (50 kPa) above volumes (V) of 1 l up to a pressure of 200 bar or, in the case of the product of V and PS of 50.  Because the maximum allowable pressure (PS) in this document is 25 bar (2 500 kPa) and if the V of the intended vessel is less than 2 l, the product of V and PS of 50 in Table 1 of the PED is not reached. SIST EN 14678-1:2013

1 Scope This European Standard covers the requirements for the design, manufacture, testing and marking of LPG dispensers for automotive LPG filling stations with a maximum allowable pressure of 25 bar (2 500 kPa), where the piping has a maximum DN 40 and any vessel fitted has a volume less than 2 l.
This European Standard covers the requirements for the LPG parts in multi-fuel dispensers. This European Standard does not cover dispensers with integral pumps. This European Standard may also be used for piping greater than DN 40 and/or vessels greater than 2 l, but then the PED [20] should also be consulted. This European Standard does not include any requirement for metering performance. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 549, Rubber materials for seals and diaphragms for gas appliances and gas equipment EN 837-1, Pressure gauges  Part 1: Bourdon tube pressure gauges  Dimensions, metrology, requirements and testing EN 1127-1, Explosive atmospheres  Explosion prevention and protection  Part 1: Basic concepts and methodology EN 1762, Rubber hoses and hose assemblies for liquefied petroleum gas, LPG (liquid or gaseous phase), and natural gas up to 25 bar (2,5 MPa)  Specification EN 1775, Gas supply  Gas pipework for buildings  Maximum operating pressure less than or equal to 5 bar  Functional recommendations EN 13463-1, Non-electrical equipment for use in potentially explosive atmospheres  Part 1: Basic method and requirements EN 13480-1, Metallic industrial piping  Part 1: General EN 13480-2, Metallic industrial piping  Part 2: Materials EN 13480-3, Metallic industrial piping  Part 3: Design and calculation EN 13480-4, Metallic industrial piping  Part 4: Fabrication and installation EN 13480-5, Metallic industrial piping  Part 5: Inspection and testing EN 13617-1, Petrol filling stations  Part 1: Safety requirements for construction and performance of metering pumps, dispensers and remote pumping units EN 13760, Automotive LPG filling system for light and heavy duty vehicles  Nozzle, test requirements and dimensions SIST EN 14678-1:2013

LPG low pressure gas composed of one or more light hydrocarbons which are assigned to UN 1011, UN 1075, UN 1965, UN 1969 or UN 1978 only and which consists mainly of propane, propene, butane, butane isomers, butene with traces of other hydrocarbon gases Note 1 to entry: For the specification of automotive LPG see EN 589. 3.2 maximum allowable pressure maximum pressure for which the equipment is designed
4.1 Environmental 4.1.1 The manufacturer shall endeavour to acquire materials 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 waste/scrap material shall be recycled. 4.1.5 Noise levels from installation process shall be evaluated and measures put in place to minimise the impact upon the external environment. 4.2 Electrical equipment 4.2.1 General The electrical equipment is deemed to fulfil minimum electrical requirements for the continuity of the protective bonding circuit, its insulation and the voltage if it fulfils the requirements of 5.6. The provisions of EN 60079-14, EN 60079-0, EN 60204-1 and EN 60950-1, as appropriate, shall apply. Electrical equipment should be selected to maximise the energy efficiency. 4.2.2 Cabling insulation resistance The power supply shall have a means of disconnection within the dispenser to allow a 500 V DC insulation test to be applied from the non-hazardous area to all power cables connecting the dispenser to the power supply (PELV, Protective Extra-Low Voltage, cables are not included). Access to any manual means of disconnection shall be provided, removable cladding or covers are permitted. Any manual means of disconnection shall be readily accessible by designated and trained personnel. The means of disconnection shall ensure that: SIST EN 14678-1:2013

4.3.3.7 Consideration should be made to using recycled or reused materials, and to the selection of materials which can then be subsequently recycled. 4.3.4 Pressure gauges Where fitted, pressure gauges shall comply with EN 837-1. 4.3.5 Trapped liquid Where LPG in liquid phase can be trapped, means shall be provided to prevent the pressure exceeding the maximum allowable pressure of the LPG system. 4.3.6 Joints All joints other than welded joints shall be accessible for inspection. Pipe connections within the dispenser shall be such that unacceptable mechanical stresses shall not occur.
EXAMPLE By use of flexible steel joints. The number of joints shall be kept to a minimum. 4.3.7 Seals and gaskets Seals and gaskets shall be compatible with LPG.
4.3.8 Sight glass Where a sight glass is fitted, it shall be of sufficient strength and tested according to the requirements of 5.2. 4.3.9 LPG system Piping and pipe fittings through which liquid or vapour LPG flows shall be constructed from materials:  compatible with LPG;  which do not directly contribute to the development of fire; and  which shall not be degraded by the external environment in which the materials are used. For guidance on selection of materials, see EN ISO 11114-1 and/or EN ISO 11114-2. The piping and pipe fittings of the LPG system shall be designed and assembled in accordance with a suitable standard such as EN 1775, EN 15001-1 and EN 13480 parts 1 to 5. Components intended to move in normal use should be selected and mounted to minimise noise and vibration. SIST EN 14678-1:2013

Non-electrical equipment, intended for use in a potentially explosive atmosphere, shall comply with the requirements of EN 13463-1 and where relevant, the selected European Standard for the specific type of ignition protection.
Category 3 equipment for use in Zone 2 shall not contain any effective ignition source in normal operation. Category 2 equipment for use in Zone 1 shall not contain any effective ignition source during foreseeable malfunctions or rare malfunctions. 4.4.3 Construction measures to limit explosive atmospheres 4.4.3.1 Hazardous areas considered in this standard are only those created by an individual LPG dispenser in open air, see Annex A. 4.4.3.2 Where hazardous areas need to be limited by the use of Type 1 or Type 2 vapour barriers, they shall be designed in accordance with Annex B. A wall is classified as non-permeable if the permeation is less than 0,1 g/m2/day.
4.4.3.3 Enclosures within hazardous areas shall:
a) if totally immersed in a Zone 2 area, be in accordance with EN 60079-15; or SIST EN 14678-1:2013

A break-away coupling connection shall be fitted between the nozzle and the dispenser. The device, mounted in its normal operating position, shall break and close both ends. Unless justified by a risk assessment, it shall be installed in such a position that no moments are applied. It shall be tested in accordance with 5.7. If a breakaway coupling is designed to be anchored to the dispenser or ground, the anchorage shall be able to withstand a force of 750 N. 4.5.1.2 Shear valve / break point The vapour return pipe shall be provided with a means to prevent the flow of LPG from the piping to the atmosphere in the event of a fracture. The liquid line for delivery of LPG shall be fitted with a means to ensure the flow is automatically stopped in the event of a fracture. This may be achieved by either:
a) a break point combined with excess flow valves; or b) a break point combined with excess flow protection system; or c) a shear valve; or
d) other suitable means. SIST EN 14678-1:2013

The shear valve or break point shall be fixed rigidly to the dispenser and to the ground. The dispenser shall be provided with a means for mounting on a plinth or other foundation. 4.5.2 Housing The dispenser housing shall provide mechanical protection for the internal equipment.
No part of the pressure containment system shall form part of the frame. Surfaces likely to be handled shall be free of sharp edges. 4.5.3 Stability The dispenser shall be deemed to be sufficiently stable if it fulfils the following requirements when tested in accordance with 5.5:  it shall not break free of its anchorage;  it shall not suffer catastrophic failure; and
 electrical safety shall not be degraded.
4.5.4 Ventilation Enclosures partially in a hazardous area shall be provided with well distributed cross ventilation in the non-hazardous area of at least 10 mm2 in a position as low as possible. Cross ventilation of the inside of the housing for the LPG system of a dispenser shall be provided and the total effective area of the ventilation openings shall be not less than the greater of 8 000 mm2 or 3,5 % of the m
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