1、March 2014 Translation by DIN-Sprachendienst.English price group 8No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 2
2、3.020.20; 45.060.20!%,6“2099319www.din.deDDIN EN 14841LPG equipment and accessories Discharge procedures for LPG rail tankers;English version EN 14841:2013,English translation of DIN EN 14841:2014-03Flssiggas-Gerte und Ausrstungsteile Entleerungsverfahren fr Eisenbahnkesselwagen fr Flssiggas (LPG);E
3、nglische Fassung EN 14841:2013,Englische bersetzung von DIN EN 14841:2014-03quipements pour GPL et leurs accessoires Procdures de dchargement des wagons-citernes pour GPL;Version anglaise EN 14841:2013,Traduction anglaise de DIN EN 14841:2014-03SupersedesDIN EN 14841:2006-04www.beuth.deIn case of do
4、ubt, the German-language original shall be considered authoritative.Document comprises 10 pages 02.14 DIN EN 14841:2014-03 2 A comma is used as the decimal marker. National foreword This document (EN 14841:2013) has been prepared by CEN/TC 286 “Liquefied Petroleum Gas equipment and accessories” (Sec
5、retariat: NSAI, Ireland). The responsible German body involved in its preparation was the Normenausschuss Druckgasanlagen (Pressurized Gas Installations Standards Committee), Working Committee NA 016-00-06 AA Flssiggas-Gerte und Ausrstung; Spiegelausschuss zu CEN/TC 286. This standard is intended to
6、 be referenced within the context of the European Agreement on the International Carriage of Dangerous Goods by Road (ADR). Before applying this standard, users of this standard are to verify whether the provisions of other laws and regulations have been met, particularly those regarding occupationa
7、l safety and health. Amendments This standard differs from DIN EN 14841:2006-04 as follows: a) Annexes A and B have been deleted; b) provisions covering aspects of occupational safety and health have been deleted; c) Annex A “Environmental checklist” has been added; d) the terminology has been updat
8、ed. Previous editions DIN EN 14841: 2006-04 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 14841 December 2013 ICS 23.020.20; 45.060.20 Supersedes EN 14841:2005English Version LPG equipment and accessories - Discharge procedures for LPG rail tankers quipements pour GPL et leurs accessoires - P
9、rocdures de dchargement des wagons-citernes pour GPL Flssiggas-Gerte und Ausrstungsteile - Entleerungsverfahren fr Eisenbahnkesselwagen fr Flssiggas (LPG) This European Standard was approved by CEN on 19 October 2013. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which st
10、ipulate 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 Europea
11、n 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 t
12、he 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, Roman
13、ia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2013 CEN All rights of exploitation in any form and by
14、any means reserved worldwide for CEN national Members. Ref. No. EN 14841:2013: EEN 14841:2013(E)2 Contents Page Foreword 3 Introduction .4 1 Scope 5 2 Terms and definitions .5 3 General 5 4 Procedures .5 4.1 General 5 4.2 Discharge procedures/operations .6 4.3 Discharging by pumps 7 4.4 Discharging
15、by compressor .7 5 Emergency procedure .7 Annex A (informative) Environmental checklist .8 DINEN 14841:2014-03EN 14841:2013 (E) 3 Foreword This document (EN 14841:2013) has been prepared by Technical Committee CEN/TC 286 “Liquefied petroleum gas equipment and accessories”, the secretariat of which i
16、s 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 June 2014 and conflicting national standards shall be withdrawn at the latest by June 2014. Attention is drawn to the possibility th
17、at some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 14841:2005. This document has been prepared under a mandate given to CEN by the European Commissio
18、n and the European Free Trade Association. 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, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former
19、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. DIN EN 14841:2014-03 EN 14841:2013 (E) 4 Int
20、roduction Protection of the environment is a key political issue in Europe and elsewhere. Protection of the environment is taken in a very broad sense. What is meant is the total life cycle aspects of, e.g. a product on the environment, including expenditure of energy and during all phases from mini
21、ng of raw materials, fabrication, packaging, distribution, use, scrapping, recycling of materials, etc. NOTE Annex A indicates which clauses in this standard address environmental issues. Provisions are to be restricted to a general guidance. Limit values are specified in national laws. It is recomm
22、ended that companies using this standard develop an environmental management policy. For guidance see ISO 14000 series. DINEN 14841:2014-03EN 14841:2013 (E) 5 1 Scope This European Standard specifies discharge, handling operations and emergency procedures for rail tankers used for the transport of l
23、iquefied petroleum gas (LPG). This European Standard applies to operations where LPG is discharged from rail tankers into LPG fixed storage facilities. This European Standard does not apply to “tank containers” and “batteries of receptacles”. 2 Terms and definitions For the purposes of this document
24、, the following terms and definitions apply. 2.1 liquefied petroleum gas LPG low pressure liquefied 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 wi
25、th traces of other hydrocarbon gases 2.2 competent person person who, by a combination of appropriate qualification, training, experience and resources, is able to make objective judgements on the subject 2.3 anti-drive-away interlock method of ensuring that if the rail tanker is accidentally moved
26、while connected there is no uncontrolled release of LPG 3 General Handling operations such as: accepting rail tankers upon arrival; discharge of LPG; and preparation and returning rail tanker shall be carried out under the supervision of a competent person (e.g. operator of the site) and shall be in
27、 accordance with the site procedures. 4 Procedures 4.1 General Site procedures including emergency procedures shall be available, understood and followed by all persons involved in each operation. This shall be achieved by training and supervision. The responsibilities of the persons involved shall
28、be clearly defined. The procedures shall include a check of the rail tanker that is to be carried out before it is accepted. This shall include: the marking; DINEN 14841:2014-03EN 14841:2013(E)6 a check of the integrity of the rail tanker; a check of tamper evident seals; and an identification check
29、 of LPG quality and grade. Where deficiencies are found they shall be recorded and reported to the appropriate body (e.g. rail tanker loader) and the rail tanker operator. A rail tanker shall not be discharged until any necessary remedial work has been completed. Copies of checklists and deficiency
30、reports shall be retained. 4.2 Discharge procedures/operations 4.2.1 The rail tanker shall be moved to the discharge area and positioned as required by the site procedures. 4.2.2 Parking brakes or other equivalent means shall be applied to prevent unintended movement of the rail tanker during discha
31、rge. The site, where the rail tankers are parked for discharging, shall be isolated from other rail traffic. If fitted, anti-drive-away interlocks shall be engaged. 4.2.3 Personnel carrying out LPG transfer operations shall wear personal protection equipment according to applicable regulations. Disc
32、harging shall be done under the constant supervision of a competent person. 4.2.4 The electrostatic potential of the rail tanker and the fixed installation shall then be equalised before the LPG hoses or loading arms are connected. 4.2.5 All rail tanker outlet valves shall be checked to ensure that
33、they are in the closed position. 4.2.6 Blanking caps or blind flanges shall be removed from the liquid and vapour connections to be used. 4.2.7 Ensure that the site is safe for discharging LPG and adequate storage capacity is available. Specific requirements for this shall be part of the site proced
34、ures. 4.2.8 Hoses and loading arms shall be checked for kinks, wear or obvious damage. Fill-couplings, seals and necessary attachments shall be examined to ensure compatibility and that no dirt or any other foreign matter is present before connection. 4.2.9 Connections shall be properly made before
35、starting to discharge. Hoses/loading arms shall not be fully extended in making the connections. A check shall be made for any sign of leakage before discharging commences. Any leakage shall be rectified before proceeding. 4.2.10 If the rail tanker is equipped with foot valve(s) an emergency ripcord
36、 shall be connected to the rail hook that will shut down the foot valve in the event of unintended movement of the rail tanker. 4.2.11 Valves shall be opened in the prescribed sequence as stated by the site procedure. 4.2.12 The delivery shall be stopped when the maximum fill level in the receiving
37、tank is reached or the rail tanker is empty. Transfer rates may need to be reduced to ensure that the maximum fill is not exceeded. 4.2.13 Valves shall be closed in the prescribed sequence as stated in the site procedure and the ripcord shall be disconnected. DIN EN 14841:2014-03 EN 14841:2013 (E) 7
38、 4.2.14 After disconnection of the filling line and any other connections to the tanker (vapour return or tanker loading control) all rail tanker valves shall be properly closed and the lines stowed. Blanking caps and blind flanges shall be secured in place and checked for leaks. 4.2.15 Anti-drive-a
39、way interlocks shall stay engaged until the rail tanker can be safely moved. 4.2.16 The connection for equalising the electrostatic potential of the rail tanker and the fixed installation shall not be disconnected until hoses/loading arms are disconnected and stowed. 4.3 Discharging by pumps 4.3.1 W
40、hen discharging a rail tanker with a pump it is not essential to connect the vapour return line. 4.3.2 Operating and safety requirements as stipulated by the pump manufacturer shall be adhered to. 4.3.3 The pumps shall be protected against damage due to dry running/cavitation. 4.4 Discharging by com
41、pressor 4.4.1 When discharging a rail tanker using a compressor it is essential to have the vapour return line connected and open before starting the compressor. 4.4.2 Operating and safety requirements stipulated by the compressor manufacturer shall be adhered to. 4.4.3 Care shall be taken to avoid
42、exceeding the maximum allowable working pressure of the rail tanker and the receiving tank. 4.4.4 Where vapour recovery is required the liquid outlet valve shall be closed. The compressor valving shall be set for vapour recovery. Care shall be taken not to decrease the pressure in the rail tanker be
43、low the pre-defined safe pressure level. Advantage of any existing pressure differentials should be taken when starting the discharge procedure before starting the compressor. Negative pressure shall be avoided in the rail tanker because of the danger of air ingress into the rail tanker and possible
44、 mechanical damage to the pressure envelope. 5 Emergency procedure The overall site emergency procedures shall include at least the following for the rail tanker discharge operations: notification/raising of the alarm; evacuation plan; LPG leakage; LPG fire including fire fighting plan; accidents; r
45、eturn to service; and incident/accident investigation and corrective actions. DINEN 14841:2014-03EN 14841:2013 (E) 8 Annex A (informative) Environmental checklist Table A.1 Stages of the life cycle All stages Acquisition Production Use End-of-Life Environmental Aspect Rawmaterials andenergyPre-manuf
46、acturedmaterialsandcomponentsProductionPackagingUseMaintenanceandrepairUseofadditionalproductsReuse /Materialand EnergyRecoveryIncinerationwithoutenergyrecoveryDepositionTransportationInputs Materials Water Energy Land Outputs Emissions to air 4.2 Discharges to water Discharges to soil Waste Noise, vibration, radiation, heat losses 4.3 4.4 Other relevant aspects Risk to the environment from accidents or unintended use 4.2 4.3 4.4 Customer information DIN EN 14841:2014-03
