SIST EN 14678-1:2006
(Main)LPG equipment and accessories - Construction and performance of LPG equipment for automotive filling stations - Part 1: Dispensers
LPG equipment and accessories - Construction and performance of LPG equipment for automotive filling stations - Part 1: Dispensers
This European Standard covers the requirements for the design, manufacture, testing and marking of LPG dispensers for automotive LPG filling stations with a design pressure of 25 bar (2 500 KPa), where the piping has a maximum DN 40 and any vessel fitted that has a volume less than 2 litres. This standard does not cover dispensers with integral pumps.
NOTE This standard may also be used for piping greater than DN 40 and/or vessels greater than 2 litres, but then the PED should be consulted.
This standard also covers the requirements for the LPG parts in multi-fuel dispensers.
Flüssiggas-Geräte und Ausrüstungsteile - Bau- und Arbeitsweise von Flüssiggas-Geräten für Autogas-Tankstellen - Teil 1: Zapfsäulen
Diese Norm enthält Anforderungen an den Bau und die Arbeitsweise von Zapfsäulen an Autogas-Tankstellen.
Diese Norm bezieht sich hauptsächlich auf Gefahren durch das Entzünden von abzufüllenden Flüssiggas (LPG) und dessen Dämpfe. Diese Norm berücksichtigt auch die elektrischen und mechanischen Gefahren dieser Einrichtung.
Equipements pour GPL et leurs accessoires - Construction et caractéristiques des équipements GPL dans les stations-service - Partie 1: Distributeurs
La présente Norme européenne traite des exigences relatives a la conception, a la construction, aux essais et au marquage des distributeurs de GPL pour stations-service délivrant du GPL carburant ayant une pression maximale admissible de 25 bar (2 500 kPa), lorsque la DN de la tuyauterie est au maximum égale a 40 et que tout récipient installé a un volume inférieur a 2 l. La présente norme ne traite pas des distributeurs munis de pompes intégrées.
NOTE La présente norme peut également etre utilisée pour des tuyauteries plus grandes que DN 40 et/ou pour des récipients de volume supérieur a 2 l, mais il convient alors de consulter la DESP.
La présente norme traite également des exigences relatives aux parties GPL dans les distributeurs multi carburants.
Oprema in dodatki za UNP – Izdelava in lastnosti opreme za UNP za bencinske črpalke – 1. del: Razdeljevalniki
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Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.LPG equipment and accessories - Construction and performance of LPG equipment for automotive filling stations - Part 1: DispensersEquipements pour GPL et leurs accessoires - Construction et caractéristiques des équipements GPL dans les stations-service - Partie 1: DistributeursFlüssiggas-Geräte und Ausrüstungsteile - Bau- und Arbeitsweise von Flüssiggas-Geräten für Autogas-Tankstellen - Teil 1: Zapfsäulen75.200Petroleum products and natural gas handling equipmentICS:SIST EN 14678-1:2006enTa slovenski standard je istoveten z:EN 14678-1:200601-maj-2006SIST EN 14678-1:2006SLOVENSKI
STANDARD
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 14678-1February 2006ICS 75.200 English VersionLPG equipment and accessories - Construction andperformance of LPG equipment for automotive filling stations -Part 1: DispensersEquipements pour GPL et accessoires - Constructions etcaracteristiques des équipements GPL devant être utilisédans les stations service - Partie 1-DistributeursFlüssiggas-Geräte und Ausrüstungsteile - Bau- undArbeitsweise von Flüssiggas-Geräten für Autogas-Tankstellen - Teil 1: ZapfsäulenThis European Standard was approved by CEN on 9 January 2006.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the Central Secretariat or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania,Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2006 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 14678-1:2006: E
EN 14678-1:2006 (E) 2 Contents Page Foreword.4 1 Scope.5 2 Normative references.5 3 Terms and definitions.6 4 Requirements.7 4.1 Electrical equipment.7 4.1.1 General.7 4.1.2 Cabling insulation resistance.7 4.1.3 Cables used in hazardous area.8 4.1.4 Dead man push button.8 4.1.5 Insulation and isolation.8 4.1.6 Chemical cells in non-hazardous areas.8 4.2 Design.9 4.2.1 Design pressure.9 4.2.2 Design temperature.9 4.2.3 Materials.9 4.2.4 Pressure gauges.10 4.2.5 Trapped liquid.10 4.2.6 Joints.10 4.2.7 Seals and gaskets.10 4.2.8 Sight glass.10 4.2.9 LPG system.10 4.3 Explosion protection measures.10 4.3.1 General.10 4.3.2 Avoidance or reduction of ignition sources.10 4.3.3 Construction measures to limit explosive atmospheres.11 4.4 Construction.12 4.4.1 Mechanical strength.12 4.4.2 Housing.12 4.4.3 Stability.12 4.4.4 Ventilation.13 4.4.5 Delivery hose assembly.13 4.4.6 Nozzle.13 4.4.7 Nozzle boot.13 4.4.8 Control provisions.13 5 Type tests.13 5.1 General.13 5.2 Sight glass tests.14 5.2.1 Impact test.14 5.2.2 Pressure test 1.14 5.2.3 Pressure test 2.14 5.3 Pressure tests for LPG system.15 5.3.1 Pressure test 1.15 5.3.2 Pressure test 2.15 5.4 Tests for electric cables used in hazardous areas.15 5.4.1 General.15 5.5 Stability test.16 5.5.1 Test procedure.16 5.5.2 Test interpretation.16
EN 14678-1:2006 (E) 3 5.6 Electrical tests.16 5.6.1 Continuity of the protective bonding circuit.16 5.6.2 Insulation resistance tests.16 5.6.3 Voltage test.16 5.6.4 Functional tests.17 5.7 Operational test for the break-away coupling (safe break).17 5.7.1 Test procedure.17 5.7.2 Test interpretation.17 5.8 Operational test for the shear valve / break point.17 5.8.1 Test procedure.17 5.8.2 Test interpretation.17 6 Production tests.17 6.1 Electrical tests.17 6.2 LPG system tests for dispensers.18 6.2.1 General.18 6.2.2 Test procedures.18 6.2.3 Test interpretation.18 7 Documentation.19 7.1 General.19 7.2 Accompanying documents.19 8 Marking.19 8.1 Markings for the user.19 8.2 Minimum markings.19 Annex A (normative)
Classification of hazardous areas in and adjacent to the dispenser.21 A.1 Nozzle area – vapour releases only.21 A.2 Nozzle boot area.24 Annex B (normative)
Classification of vapour barriers.26 B.1 General.26 B.2 Vapour barrier – Type 1.26 B.3 Vapour barrier – Type 2.26 B.4 Typical vapour barrier arrangements.27 Annex C (informative)
Information on explosion protected equipment.30 Annex ZA (informative)
Relationship between this
European
Standard and the Essential Requirements
of EU Directive 94/9/EC.31 Bibliography.33
EN 14678-1:2006 (E) 4 Foreword This European Standard (EN 14678-1:2006) has been prepared by Technical Committee CEN/TC 286 “Liquefied petroleum gas equipment and accessories”, the secretariat of which is held by NSAI. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by August 2006, and conflicting national standards shall be withdrawn at the latest by August 2006. This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association, and supports essential requirements of EU Directive(s). For relationship with EU Directive 94/9/EC, see informative Annex ZA, which is an integral part of this document. NOTE The Pressure Equipment Directive 97/23/EC (PED) 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 design 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 litre up to a pressure of 200 bar or, in the case of the product of V and PS of 50. Because the design pressure (PS) in this document is 25 bar (2 500 kPa) and if the V of the intended vessel is less than 2 litres, the product of V and PS of 50 in Table 1 of the PED is not reached. This standard addresses the essential health and safety requirements of the ATEX Directive. This standard does not include any requirement for metering performance. The manufacturer may have to consider the requirements of Directives 73/23/EEC and 89/336/EEC where relevant. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EN 14678-1:2006 (E) 5 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 design pressure of 25 bar (2 500 KPa), where the piping has a maximum DN 40 and any vessel fitted that has a volume less than 2 litres.
This standard does not cover dispensers with integral pumps. NOTE This standard may also be used for piping greater than DN 40 and/or vessels greater than 2 litres, but then
the PED should be consulted. This standard also covers the requirements for the LPG parts in multi-fuel dispensers. 2 Normative references The following referenced documents are indispensable for the application of this European Standard. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 549:1994, 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 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 13463–1, Non electrical equipment for potentially explosive atmospheres – Part 1: Basic method and requirements. EN 13617-1: 2004, 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. EN 60079-0: 2004, Electrical apparatus for explosive gas atmospheres – Part 0: General requirements (IEC 60079-0:2004) EN 60079-7: 2003, Electrical apparatus for explosive gas atmospheres - Part 7: Increased safety
"e" (IEC 60079-7:2001) EN 60079-10: 2003 , Electrical apparatus for explosive gas atmospheres Part 10 : Classification of hazardous areas (IEC 60079-10: 2002). EN 60079-14, Electrical apparatus for explosive gas atmospheres Part 14: Electrical Installations in hazardous areas /other than mines) (IEC 60079-14: 2002). EN 60079-15: 2003, Electrical apparatus for explosive gas atmospheres – Part 15: Type of protection "n" (IEC 60079-15:2001, modified) EN 60204-1: 1998, Safety of machinery; electrical equipment of machines - Part 1: General Requirements (IEC 60204-1: 1997). EN 60529: 1993, Degrees of protection provided by enclosures (IP code) (IEC 60529:1989).
EN 14678-1:2006 (E) 6 EN 60947-3, Low voltage switchgear and controlgear.- Part 3: Switches, disconnectors, switch-disconnectors and fuse-combination units (IEC 60947-3:1999) HD 21.13 S1, Polyvinyl chloride insulated cables of rated voltages up to and including 450/750 V – Part 13: Oil resistant PVC sheathed cables with two or more conductors HD 22.4 S4, Cables of rated voltages up to and including 450/750 V and having crosslinked insulation - Part 4: Cords and flexible cables 3 Terms and definitions For the purposes of this European Standard, the following terms and definitions apply. 3.1 LPG (liquefied petroleum gas) mixture of predominantly butane or propane with traces of other hydrocarbon gases classified in accordance with UN number 1965, hydrocarbon gases mixture, liquefied, NOS or UN number 1075, petroleum gases, liquefied NOTE 1 In some countries, UN numbers 1011 and 1978 may also be designated LPG. NOTE 2 For automotive LPG specification see EN 589. 3.2 design pressure pressure for which the equipment is designed NOTE Gauge pressure unless otherwise stated. 3.3 excess flow valve valve designed to close automatically, with a small residual flow, when the fluid flow passing through it exceeds a predetermined value, and to re-open when the pressure differential across the valve has been restored below a certain value 3.4 hydrostatic relief valve device that prevents the build up of hydrostatic pressure above a pre-set value
3.5 shear valve (impact check valve) normally open valve activated by impact which closes both sides of the break point to prevent flow and remains closed after activation 3.6 dead man’s push button manually operated non latching device which immediately stops the flow when released 3.7 hazardous area area in which an explosive gas atmosphere is present, or may be expected to be present, in quantities such as to require special precautions for the construction, installation of equipment and use of apparatus 3.8 dispenser delivery and measuring unit for LPG in the liquid phase
EN 14678-1:2006 (E) 7 3.9 break-away coupling (safe break) coupling which separates at a predetermined section when required and each separated section contains a self-closing shut-off valve, which seals automatically 3.10 nozzle boot partially enclosed housing where the filling nozzle is located when not in use 3.11 LPG system piping, pipe fittings and components through which LPG flows, including seals and gaskets 3.12 break point weakened section in a pipe or fitting intended to break when excessive force is applied 3.13 sight glass device to allow checking that all, or part, of the measuring system is completely filled with liquid 3.14 screen perforated cladding fabrication which may be provided to enhance the visual appearance of a pump or dispenser or to provide another related function 3.15 STP Standard Temperature and Pressure [15,6 °C (288,7 K), 1,013 bar absolute (0,1013 MPa absolute)] 4 Requirements
4.1 Electrical equipment 4.1.1 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. 4.1.2 Cabling insulation resistance The power supply shall have a means of disconnection within the dispenser to allow a 500V d.c. 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: a) all external power cables up to the means of disconnection can be tested between any phase and earth and between phases;
EN 14678-1:2006 (E) 8 and b) all dispenser power cables and equipment within the hazardous area can be tested between the power circuit and the earth. 4.1.3 Cables used in hazardous area Electrical cables used in hazardous areas shall comply with either: EN 60079-14 and HD 21.13 S1 or EN 60079-14 and HD 22.4 S4, or
the requirements of 5.4, to confirm that unarmoured elastomeric and/or plastic insulated cables, with a semi-rigid or tough sheath, are suitable for use in pumps, dispensers and remote pumping units. 4.1.4 Dead man push button The dead man push button shall be in accordance with the requirements of EN 60947 – 3 (see 4.4.8). 4.1.5 Insulation and isolation In order to avoid danger from sources of electrical energy capable of causing shock, and also, in hazardous areas, from non-intrinsically safe energy sources capable of causing incentive sparks, all such sources of energy and conductive components which are intended to remain live during maintenance, testing or inspection, shall be insulated or shielded according to clause 6 of EN 60204-1 so as to prevent accidental contact. In order to prevent electrostatic discharges between the nozzle and the filler connection that could cause ignition, materials and components shall be selected to ensure that the resistance between nozzle and earth is less than 106 ohms when measured with a low voltage ohm-meter. Power sources such as batteries, and capacitors which do not decay to a stored energy level of less than
0,2 mJ within 10s, shall be considered as potential ignition sources and therefore shall be insulated or isolated. The means of isolation shall: a) apply to all phase conductors; b) be operable prior to access to the internals of any electrical enclosure in a hazardous area, and be suitable for the hazardous area in which it is mounted; and c) for sources of energy not exceeding 24 V, be in accordance with either EN 60947-3 or include a gap between contacts in accordance with EN 60730-2-10 or be capable of satisfying a 500 V dielectric test across the contacts; or d) for sources of energy exceeding 24 V, be in accordance with EN 60947-3. NOTE Neutral /negative conductors should be considered as phase conductors. 4.1.6 Chemical cells in non-hazardous areas There is a possibility of explosive atmosphere generation from chemical cells used to supply electrical power to the display head or other equipment attached to the dispenser; thus producing its own hazardous area.
EN 14678-1:2006 (E) 9 Therefore chemical cells shall be in a ventilated area.
If the chemical cells are located in an enclosure with no internal hazardous area, low and high level ventilation shall be provided consistent with a degree of protection of IP33 according to EN 60529 or more open. Any chemical cell or battery of chemical cells forming a sub-assembly shall be fitted into a vented enclosure with high and low ventilation having a degree of protection not better than IP33 according to EN 60529. The means of construction of the cells and their enclosure shall be according to clause 4 of EN 60079-7 for emission of gas and method of connection of cells.
Conformity shall be demonstrated by the supplier’s declaration. These provisions apply to all cells and batteries of cells except for primary cells operated in discharge mode only. 4.2 Design 4.2.1 Design pressure The design pressure, for the LPG pressure containing parts, shall be at least 25 bar (2 500 kPa). 4.2.2 Design temperature The maximum design temperature shall be + 40 °C. The minimum design temperature shall be - 20 °C.
However, where a design temperature outside the above range is required, the manufacturer shall demonstrate the suitability of the design at this temperature and the temperature shall be marked in accordance with 8. 4.2.3 Materials Materials in contact with LPG shall be compatible with automotive LPG. Materials exposed to corrosive conditions shall be corrosion resistant or protected against corrosion. NOTE Material complying with the requirements of EN 13175 may be used. The component manufacturer shall maintain records of and provide if requested: chemical analysis certificates, mechanical property data, results of metallurgical and mechanical tests and analysis, for the materials used in construction of the parts subjected to pressure. All elastomer 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.
For guidance on selection of non-metallic materials see EN ISO 11114-2.
Rubber materials shall conform to the requirements of EN 549. The component manufacturer shall maintain a system for the identification and tracing of materials used in the fabrication of parts under pressure.
EN 14678-1:2006 (E) 10 4.2.4 Pressure gauges Where fitted, pressure gauges shall be in accordance with EN 837-1. 4.2.5 Trapped liquid Where LPG in liquid phase can be trapped, means shall be provided to prevent the pressure exceeding the design pressure of the LPG system. 4.2.6 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, e.g. by use of flexible steel joints. The number of joints shall be kept to a minimum. 4.2.7 Seals and gaskets Seals and gaskets shall be compatible with automotive LPG.
4.2.8 Sight glass Where a sight glass is fitted, it shall be of sufficient strength and tested according to the requirements of 5.2. 4.2.9 LPG system P
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