SIST EN 12252:2006+A1:2008
(Main)LPG equipment and accessories - Equipping of LPG road tankers
LPG equipment and accessories - Equipping of LPG road tankers
This European Standard specifies equipment and accessories for road tankers used for the transport of Liquefied Petroleum Gas (LPG) and identifies the equipment that is considered necessary to ensure that filling, transportation and discharge operations can be carried out safely. It also specifies the requirements for the assembly of the accessories and the vehicle LPG equipment to the road tanker.
This European Standard also identifies additional equipment and accessories that may be used on road tankers carrying LPG.
NOTE This European Standard does not preclude the use of alternative designs, materials and equipment testing which provide a similar level of safety.
This European Standard does not apply to "tank-containers" and "battery-vehicles" used for the transportation of LPG.
Flüssiggas-Geräte und Ausrüstungsteile - Ausrüstung von Straßentankwagen für Flüssiggas (LPG)
Diese Europäische Norm legt die Ausstattung und das Zubehör von Straßentankwagen fest, die zum Transport von Flüssiggas (LPG) eingesetzt werden, und beschreibt die als notwendig betrachtete Ausrüstung zur sicheren Durchführung von Füll-, Transport- und Entleerungsvorgängen. Sie legt auch die Anforderungen an den Zusammenbau des Zubehörs und die Fahrzeugausrüstung für Flüssiggas (LPG) von Straßentankwagen fest.
Die Europäische Norm beschreibt auch zusätzliche Ausrüstung und Zubehör, die auf mit Flüssiggas beladenen Straßentankwagen verwendet werden können.
ANMERKUNG Diese Europäische Norm sollte nicht die Anwendung alternativer Auslegungen, Werkstoffe und Ausrüstungen ausschließen, um zu überprüfen, welche ein gleichwertiges Sicherheitsniveau haben.
Diese Norm gilt nicht für Tankcontainer bzw. Batterie-Fahrzeuge die beim Transport von Flüssiggas Verwendung finden.
Equipements pour GPL et leurs accessoires - Equipements des camions citernes pour GPL
La présente Norme européenne spécifie les équipements et accessoires pour camions-citernes destinés au transport de gaz de pétrole liquéfié (GPL) et identifie les équipements considérés comme nécessaires pour que les opérations de remplissage, de transport et de déchargement puissent être effectuées en toute sécurité. Elle spécifie également les exigences relatives à l’assemblage des accessoires et des équipements GPL du véhicule sur le camion-citerne.
La présente Norme européenne identifie également les équipements et accessoires supplémentaires qui peuvent être utilisés sur des camions-citernes destinés au transport de GPL.
NOTE La présente Norme européenne n’exclut pas l’utilisation de conceptions, de matériaux et de méthodes d’essais des équipements qui diffèrent, à condition qu’ils présentent un niveau de sécurité équivalent.
La présente Norme européenne ne s’applique pas aux «conteneurs-citernes», ni aux «véhicules batteries» utilisés pour le transport du GPL.
Oprema in pribor za utekočinjeni naftni plin (UNP) - Opremljanje cestnih cistern za UNP
General Information
Relations
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.813Flüssiggas-Geräte und Ausrüstungsteile - Ausrüstung von Straßentankwagen für Flüssiggas (LPG)Equipements pour GPL et leurs accessoires - Equipements des camions citernes pour GPLLPG equipment and accessories - Equipping of LPG road tankers43.080.10Tovornjaki in priklopnikiTrucks and trailersICS:Ta slovenski standard je istoveten z:EN 12252:2005+A1:2008SIST EN 12252:2006+A1:2008en,fr,de01-maj-2008SIST EN 12252:2006+A1:2008SLOVENSKI
STANDARD
SIST EN 12252:2006+A1:2008
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 12252:2005+A1
March 2008 ICS 43.080.10 Supersedes EN 12252:2005 English Version
LPG equipment and accessories - Equipping of LPG road tankers
Equipements pour GP et leurs accessoires - Equipements des camions citernes pour GPL
Flüssiggas-Geräte und Ausrüstungsteile - Ausrüstung von Straßentankwagen für Flüssiggas (LPG) This European Standard was approved by CEN on 26 October 2005 and includes Amendment 1 approved by CEN on 14 January 2008.
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 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 Management Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, 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 STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36
B-1050 Brussels © 2008 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 12252:2005+A1:2008: ESIST EN 12252:2006+A1:2008
EN 12252:2005+A1:2008 (E) 2 Contents Page Foreword.4 1 Scope.5 2 Normative references.5 3 Terms and definitions.6 3.3 Equipment.7 4 Requirements.7 4.1 General.7 4.2 Equipment.7 4.3 Valve access.8 5 Tank.8 5.1 Design, and manufacture.8 5.2 Mounting of tank on road tanker.8 5.2.1 General.8 5.2.2 Mounting.8 6 Tank accessories.9 6.1 Required tank accessories.9 6.1.1 Contents gauge.9 6.1.2 Pressure gauge.9 6.1.3 Primary shut-off system.9 6.2 Optional tank accessories.10 7 Road tanker LPG equipment.10 7.1 Required LPG equipment.10 7.1.1 General.10 7.1.2 Pipework.10 7.1.3 Connecting hoses.10 7.1.4 Thermal expansion valves/hydrostatic relief valves.11 7.1.5 Valves.11 7.2 Optional LPG equipment.11 8 Equipment specifications.11 8.1 Suitable materials.11 8.1.1 General.11 8.1.2 Steel pressure retaining parts.11 8.1.3 Non-pressure retaining parts.12 8.1.4 Welding consumables.12 8.1.5 Non-metallic materials.12 8.1.6 Pipework.12 8.1.7 Certification of materials.12 8.1.8 Control of materials.12 8.2 Contents gauge.13 8.3 Pressure gauge.13 8.4 Temperature gauge.13 8.5 Pump.13 8.6 Hoses.13 8.7 Hose reel.14 8.8 Earth reel.14 8.9 Metering system.14 8.10 Valves.14 8.11 Pressure relief valves (PRVs).14 SIST EN 12252:2006+A1:2008
EN 12252:2005+A1:2008 (E) 3 9 Assembly.15 9.1 General.15 9.2 Welding.15 9.2.1 Welding of the pressure containing parts.15 9.2.2 Welding of the non pressure containing parts.15 9.3 Flanged connections.15 9.4 Screwed connections.15 9.5 Pressure test.15 9.6 Leak test.16 9.7 External corrosion protection.16 10 Safety systems.16 10.1 General.16 10.2 Emergency Shut-Down system (ESD).17 11 General safety requirements.17 Annex A (informative)
Discharge rates for pressure relief valves.18 A.1 Discharge capacity.18 Annex B (informative)
Calculation of mountings of tank to the chassis.20 B.1 General.20 B.2 Mounting of tank to the chassis.21 B.2.1 Fixing rods.21 B.2.2 Bolts.22 B.2.3 Bracket welds.22 B.2.4 Allowable stress.22 B.2.5 Typical mounting (example).23 B.3 Calculation of fixing rods.23 B.3.1 In the direction of travel.23 B.3.2 At right angles to the direction of travel.24 B.3.3 Vertically upwards.24 B.4 Calculation of the bracket welds.24 B.4.1 General.24 B.4.2 In the direction of travel.25 B.4.3 At right angles to the direction of travel.25 B.4.4 Vertically upwards.25 B.5 Calculation of fixing bolts.25 B.5.1 In the direction of travel.26 B.5.2 At right angles to the direction of travel.26 B.5.3 Vertically upwards.26 Bibliography.27
SIST EN 12252:2006+A1:2008
EN 12252:2005+A1:2008 (E) 4 Foreword This document (EN 12252:2005+A1:2008) 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 September 2008 and conflicting national standards shall be withdrawn at the latest by September 2008. This document includes Amendment 1, approved by CEN on 2008-01-14. This document supersedes !EN 12252:2005". The start and finish of text introduced or altered by amendment is indicated in the text by tags ! ". The European Standard has been submitted for reference into the technical annexes of the ADR.
Therefore the standards listed in the normative references and covering basic requirements of the ADR not addressed within the present European Standard are normative only when the standards themselves are referred to in the technical annexes of the ADR. !deleted text" According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, 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.
SIST EN 12252:2006+A1:2008
EN 12252:2005+A1:2008 (E) 5 1 Scope This European Standard specifies equipment and accessories for road tankers used for the transport of Liquefied Petroleum Gas (LPG) and identifies the equipment that is considered necessary to ensure that filling, transportation and discharge operations can be carried out safely.
It also specifies the requirements for the assembly of the accessories and the vehicle LPG equipment to the road tanker. This European Standard also identifies additional equipment and accessories that may be used on road tankers carrying LPG. NOTE This European Standard does not preclude the use of alternative designs, materials and equipment testing which provide a similar level of safety. This European Standard does not apply to "tank-containers" and "battery-vehicles" used for the transportation of LPG. 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 287-1, Qualification test of welders — Fusion welding — Part 1: Steels EN 549, Rubber materials for seals and diaphragms for gas appliances and gas equipment EN 558-1, Industrial valves — Face-to-face and centre-to-face dimensions of metal valves for use in flanged pipe systems — Part 1: PN-designated valves !deleted text" EN 837-2, Pressure gauges — Part 2: Selection and installation recommendations for pressure gauges EN 1012-1, Compressors and vacuum pumps — Safety requirements — Part 1: Compressors EN 1418, Welding personnel — Approval testing of welding operators for fusion welding and resistance weld setters for fully mechanized and automatic welding of metallic materials EN 1591-1, Flanges and their joints — Design rules for gasketed circular flange connections — Part 1: Calculation method 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 1983", Industrial valves — Steel ball valves EN 1984, Industrial valves — Steel gate valves EN 10025 (all parts), Hot rolled products of structural steels EN 10028 (all parts), Flat products made of steels for pressure purposes EN 10045-1, Metallic materials — Charpy impact test — Part 1: Test method EN 10204:2004, Metallic products — Types of inspection documents SIST EN 12252:2006+A1:2008
EN 12252:2005+A1:2008 (E) 6 EN 10216-1, Seamless steel tubes for pressure purposes — Technical delivery conditions — Part 1: Non-alloy steel tubes with specified room temperature properties EN 10217-1, Welded steel tubes for pressure purposes — Technical delivery conditions — Part 1: Non-alloy steel tubes with specified room temperature properties EN 12074, Welding consumables — Quality requirements for manufacture, supply and distribution of con-sumables for welding and allied processes EN 12493, Welded steel tanks for liquefied petroleum gas (LPG) — Road tankers — Design and manufacture EN 12627, Industrial valves — Butt welding ends for steel valves EN 12760, Valves — Socket welding ends for steel valves !EN 13175:2003+A2", Specification and testing for Liquefied Petroleum Gas (LPG) tank valves and fittings EN 13709, Industrial valves — Steel globe and globe stop and check valves EN 13789, Industrial valves — Cast iron globe valves EN 13799, Contents gauges for LPG tanks EN 14422, Clamp type coupling assemblies for LPG transfer hoses EN 14424, Hose fittings with screwed ferrules !EN ISO 3834-2, Quality requirements for fusion welding of metallic materials — Part 2: Comprehensive quality requirements (ISO 3834-2:2005) EN 3834-3, Quality requirements for welding — Fusion welding of metallic materials — Part 3: Standard quality requirements (ISO 3834-3:2005)" EN ISO 10497, Testing of valves — Fire type-testing requirements (ISO 10497:2004) EN ISO 15609-1:2004, Specification and qualification of welding procedures for metallic materials — Welding procedure specification — Part 1: Arc welding (ISO 15609-1:2004) EN ISO 15614-1:2004, Specification and qualification of welding procedures for metallic materials — Welding procedure test — Part 1: Arc and gas welding of steels and arc welding of nickel and nickel alloys
(ISO 15614-1:2004) 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 In some countries, UN numbers 1011 and 1978 may also be designated LPG. SIST EN 12252:2006+A1:2008
EN 12252:2005+A1:2008 (E) 7 3.2 primary shut-off system valve or a series of valves attached to the tank which provides a method of closing the tank 3.3 Equipment 3.3.1 vehicle LPG equipment equipment and pipework on the road tanker which is in contact with LPG and forms part of the LPG operating system, shut-down system or safety system, but which is not directly connected to the tank and is not part of the LPG fuel system 3.3.2 tank pressure vessel containing the LPG, connecting nozzles and welded attachments 3.3.3 accessories fittings connected to the tank 3.4 thermowell permanently sealed pocket in the tank/pipework for the temperature gauge 3.5 pipework fabricated tubes and fittings which interconnect the tank, valves and equipment 3.6 road tanker rigid vehicle, semi-trailer or trailer comprising of one or more fixed tanks NOTE Referred to as fixed tanks (tank-vehicles) and demountable tanks in the ADR. 4 Requirements 4.1 General Equipment, when assembled, shall be of such a nature that they withstand the anticipated mechanical, chemical and thermal stresses and remain tight.
In particular they shall be: manufactured of materials which give the finished equipment the required mechanical properties; in particular, where equipment is subject to the low temperatures (including low temperatures caused by filling), suitably ductile material shall be used; protected against accidental damage where such damage could lead to a dangerous escape of LPG. 4.2 Equipment This European Standard covers mandatory and optional equipment to be fitted to LPG road-tankers in accordance with Table 1. SIST EN 12252:2006+A1:2008
EN 12252:2005+A1:2008 (E) 8 Table 1 — Road-tanker equipment Description Clauses Mandatory
Optional Tank accessories Contents gauge 6.1.1 / 8.2 X
Pressure gauge 6.1.2 / 8.3 X
Primary shut-off system 6.1.3 X
Temperature gauge 6.2 / 8.4
X Pressure relief valve (PRV) 6.2 / 8.11
X Sun shield 6.2
X Road tanker LPG equipment Pipework 7.1.2 / 8.1.6 X
Emergency shut-down system 10.2 X
Hoses 7.1.3 / 8.6 X
Thermal expansion valves/hydrostatic relief valves 7.1.4 X
Valves 7.1.5 /8.10
X
Compressor 7.2
X Pump 7.2/ 8.5
X Hose reel 7.2/ 8.7
X Metering system 7.2/ 8.9
X Earth reel 7.2/ 8.8
X
4.3 Valve access Valves required for normal and emergency operation shall be readily accessible or remotely operated. 5 Tank 5.1 Design, and manufacture The tank shall be designed and manufactured in accordance with EN 12493. 5.2 Mounting of tank on road tanker 5.2.1 General The tank and fastenings to the structure of the road tanker shall be designed and constructed to absorb safely the stresses from normal use such as surge, vibration, braking action etc. 5.2.2 Mounting 5.2.2.1 The fixing of the tank to the road tanker shall be designed in accordance with a calculation based on the forces given in Table 2. SIST EN 12252:2006+A1:2008
EN 12252:2005+A1:2008 (E) 9 Table 2 — Forces for fixing the tank to the road tanker Direction of force Force N In the driving direction 2 g x total mass of tank Horizontal, at 90° to the driving direction 1 g x total mass of tank Vertical, upwards 1 g x total mass of tank Vertical, downwards 2 g x total mass of tank The total mass of the tank shall be taken as the tare mass plus the maximum allowable mass of the contents.
g = gravitational acceleration.
5.2.2.2 A sample method of calculation for the mountings of the tank to the chassis is contained in Annex B. 5.2.2.3 The tank shall be electrically continuous with the chassis.
The resistance of this electrical path shall not exceed 10 . 5.2.2.4 If the tank, while on the chassis, will be subjected to a hydraulic test, during which the tank can contain twice the normal weight of its normal operating capacity it shall be established that the chassis is capable of taking this weight. 6 Tank accessories 6.1 Required tank accessories 6.1.1 Contents gauge 6.1.1.1 Tanks shall be equipped with a suitable contents gauge.
The requirements of EN 12493 for maximum fill shall apply. 6.1.1.2 If the contents of the tank are to be measured by volume rather than by weight, then at least two independent systems of measuring the contents shall be fitted, only one of which can be a fixed liquid level gauge. 6.1.2 Pressure gauge Tanks shall be equipped with a pressure gauge in accordance with 8.3. 6.1.3 Primary shut-off system 6.1.3.1 All connections to the tank in excess of 1,5 mm diameter, other than those for pressure relief valves or those permanently fitted with blank flanges or plugs, shall incorporate a primary shut-off system. 6.1.3.2 The primary shut-off system shall be of a design intended to limit the release of the tank's content in the event of external damage. 6.1.3.3 The primary shut-off system required depends upon the purpose of the tank connection as follows: a) Discharge/filling to liquid phase: SIST EN 12252:2006+A1:2008
EN 12252:2005+A1:2008 (E) 10 A normally closed internal shut-off valve opened by hydraulic, pneumatic or mechanical power from the road tanker.
The valve shall be designed for rapid closure on command (see 10.2).
The system shall incorporate a thermally sensitive device or other means that will ensure positive closure in the event of a fire and shall incorporate an excess flow valve facility. b) Filling to vapour phase: The road tanker filling connection shall be provided with: a non return valve or a series of non return valves in combination with a manual shut-off valve, or a normally closed internal shut-off valve opened by hydraulic, pneumatic or mechanical power from the road tanker along with an anti-drive-away system/emergency-shut down system. c) Other liquid or vapour piped connections: An internal excess flow valve or internal - non-return valve in series combination with a manual shut-off valve shall be provided. 6.1.3.4 In the liquid discharge line at least one hand operated or remotely operated valve shall be positioned as close as reasonable to the tank outlet after the internal shut-off valve. 6.1.3.5 The remotely operated shut-off valves shall be in the closed position during transport. 6.2 Optional tank accessories If any of the these optional accessories are fitted, the following requirements shall apply: a) temperature gauges shall be in accordance with 8.4; b) pressure relief valves (PRVs) shall be sized in accordance with 8.11 and Annex A; c) sun shields shall be designed in accordance with EN 12493. 7 Road tanker LPG equipment 7.1 Required LPG equipment 7.1.1 General LPG equipment and pipework shall be protected against mechanical damage, by its design or location and/or by barriers. 7.1.2 Pipework Mechanical barriers shall not be attached to pipework or valves, which they are intended to protect. The pipework shall be installed so as to prevent damage due to vibration. The number of joints shall be kept to a minimum.
Joints shall be welded or weld flanged except if permitted by 9.4. 7.1.3 Connecting hoses Connecting hoses for pipework/equipment shall be in accordance with 8.6. SIST EN 12252:2006+A1:2008
EN 12252:2005+A1:2008 (E) 11 7.1.4 Thermal expansion valves/hydrostatic relief valves Thermal expansion valves/hydrostatic relief valves shall be provided for all pipe sections where liquid may be trapped between closed valves unless the system is otherwise protected. They shall be positioned so that they do not point at the LPG tank nor shall they be placed in the bottom quarter of horizontal pipes. Hydrostatic relief valves shall be set to discharge at a pressure not above the design pressure of the equipment being protected. 7.1.5 Valves Valves shall be in accordance with8.10. A shut-off valve is required in the pipework for liquid transfer or vapour balance connections used for routine operations.
It shall be positioned as close as reasonable to the end of the pipework and/or hose outlet. 7.2 Optional LPG equipment If any of the following equipment is fitted to the road tanker, the following requirements shall apply: compressors shall be in accordance with EN 1012-1; pumps shall be in accor
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.