1、BRITISH STANDARDBS EN 14841:2005LPG equipment and accessories Discharge procedures for LPG rail tankersThe European Standard EN 14841:2005 has the status of a British StandardICS 23.020.20; 45.060.20g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g
2、59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58Licensed Copy: Wang Bin, na, Tue Apr 18 03:41:50 BST 2006, Uncontrolled Copy, (c) BSIBS EN 14841:2005This British Standard was published under the authority of the Standards Policy and Strategy Committ
3、ee on 16 January 2006 BSI 16 January 2006ISBN 0 580 46992 1National forewordThis British Standard is the official English language version of EN 14841:2005. The UK participation in its preparation was entrusted to Technical Committee PVE/19, LPG containers and their associated fittings, which has th
4、e responsibility to: A list of organizations represented on this committee can be obtained on request to its secretary.Cross-referencesThe British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitle
5、d “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance wi
6、th a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep UK interests informed; monitor related internation
7、al and European developments and promulgate them in the UK.Summary of pagesThis document comprises a front cover, an inside front cover, the EN title page, pages 2 to 12, an inside back cover and a back cover.The BSI copyright notice displayed in this document indicates when the document was last is
8、sued.Amendments issued since publicationAmd. No. Date CommentsLicensed Copy: Wang Bin, na, Tue Apr 18 03:41:50 BST 2006, Uncontrolled Copy, (c) BSIEUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 14841December 2005ICS 23.020.20; 45.060.20English VersionLPG equipment and accessories - Discharge proc
9、edures forLPG rail tankersEquipements pour GP et leurs accessoires - Procdures dedchargement des wagons-citernes pour GPLFlssiggas-Gerte und Ausrstungsteile -Entleerungsverfahren fr Eisenbahnkesselwagen frFlssiggas (LPG)This European Standard was approved by CEN on 26 October 2005.CEN members are bo
10、und 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 Ce
11、ntral 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
12、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, Slovakia,Slovenia, Spain,
13、Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: rue de Stassart, 36 B-1050 Brussels 2005 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN national Members.
14、Ref. No. EN 14841:2005: ELicensed Copy: Wang Bin, na, Tue Apr 18 03:41:50 BST 2006, Uncontrolled Copy, (c) BSIEN 14841:2005 (E) 2 Contents Page Foreword 3 1 Scope .4 2 Terms and definitions.4 3 General 4 4 Procedures 4 4.1 General 4 4.2 Discharge procedures/operations .5 4.3 Discharging by pumps .6
15、4.4 Discharging by compressor.6 5 Emergency procedure 6 Annex A (informative) Checklist for rail tanker handling 8 A.1 Rail tanker and delivery information .8 A.2 Condition of rail tanker.9 A.3 Securing of a faulty rail tanker.10 Annex B (informative) Identification of rail tankers .11 Licensed Copy
16、: Wang Bin, na, Tue Apr 18 03:41:50 BST 2006, Uncontrolled Copy, (c) BSIEN 14841:2005 (E) 3 Foreword This European Standard (EN 14841:2005) 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
17、 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 2006, and conflicting national standards shall be withdrawn at the latest by June 2006. According to the CEN/CENELEC Internal Regulations, the national stan
18、dards 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, S
19、lovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. Licensed Copy: Wang Bin, na, Tue Apr 18 03:41:50 BST 2006, Uncontrolled Copy, (c) BSIEN 14841:2005 (E) 4 1 Scope This European Standard specifies discharge, emergency procedures and handling operations for rail tankers used for the tr
20、ansport of liquefied petroleum gas (LPG). This European Standard applies to operations where LPG is off-loaded 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 t
21、his European Standard, the following terms and definitions apply. 2.1 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 g
22、ases, liquefied NOTE In some countries, UN numbers 1011 and 1978 may also be designated LPG. 2.2 competent person person who, by a combination of training, experience and supervision, is able to make objective judgements on the subject 2.3 anti-drive-away interlock method of ensuring that if the rai
23、l tanker is accidentally moved while connected there is no uncontrolled release of LPG 3 General Handling operations such as: accepting rail tankers upon arrival; off-loading of LPG; preparation and returning rail tanker shall be carried out under the supervision of a competent person (e.g. operator
24、 of the site) and shall be in 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 o
25、f the persons involved shall be clearly defined. Licensed Copy: Wang Bin, na, Tue Apr 18 03:41:50 BST 2006, Uncontrolled Copy, (c) BSIEN 14841:2005 (E) 5 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 (see Anne
26、x B): a check of the integrity of the rail tanker; a check of tamper evident seals; an identification check 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 owner. A rail tanker shall not
27、be off loaded until any necessary remedial work has been completed. Copies of checklists (see Annex A) and deficiency 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 Bra
28、kes or other equivalent means shall be applied to prevent unintended movement of the rail tanker during discharge. 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 Operators shall wea
29、r appropriate personal protection equipment while carrying out LPG transfer operations. 4.2.4 The electrostatic potential of the rail tanker and the fixed installation shall then be equalised before the LPG hoses/arms are connected. 4.2.5 All rail tanker outlets valves and/or foot valves shall be ch
30、ecked to ensure that they are in the closed position. 4.2.6 Blanking caps or blind flanges shall be removed from the liquid and vapour connections. 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 s
31、ite procedures. 4.2.8 Hoses/arms shall be checked for kinks, wear or obvious damage. Fill-couplings and seals shall be examined to ensure compatibility and that no dirt etc. is present before connection. 4.2.9 Connections shall be properly made before starting to discharge. Hoses/loading arms shall
32、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 bottom foot valve(s) an emergency ripcord shall be connected to the rail hook that
33、 will shut down the bottom foot valve in the event of unintended movement of the rail tanker. 4.2.11 Valves shall be opened in the correct sequence as stated by the site procedure. 4.2.12 The delivery shall be stopped when the maximum fill level in the receiving tank is reached or the rail tanker is
34、 empty. NOTE Transfer rates may need to be reduced to ensure that the maximum fill is not exceeded. Licensed Copy: Wang Bin, na, Tue Apr 18 03:41:50 BST 2006, Uncontrolled Copy, (c) BSIEN 14841:2005 (E) 6 4.2.13 Valves shall be closed in the correct sequence as stated in the site procedure and the r
35、ipcord shall be disconnected. 4.2.14 The rail tanker shall be disconnected and hoses stowed or reeled in and blanking caps/blind flanges re-fitted, followed by a visual final inspection of the rail tanker and the discharge equipment. 4.2.15 Anti-drive-away interlocks shall stay engaged until the rai
36、l 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 When discharging a rail tanker with a pump it is
37、 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 compressor 4.4.1 When discharging a rail tanker us
38、ing 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 exceeding the maximum allowable working pressur
39、e of the rail tanker and/or 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 below the pre-defined safe pressure level. NOT
40、E 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 mechanical damage to the pressure enve
41、lope. 5 Emergency procedure The overall site emergency procedures shall at least include the following for the rail tanker off-loading facilities: notification/raising of the alarm; evacuation plan; LPG leakage; LPG fire including fire fighting plan; accidents; Licensed Copy: Wang Bin, na, Tue Apr 1
42、8 03:41:50 BST 2006, Uncontrolled Copy, (c) BSIEN 14841:2005 (E) 7 return to service; incident/accident investigation and corrective actions. Licensed Copy: Wang Bin, na, Tue Apr 18 03:41:50 BST 2006, Uncontrolled Copy, (c) BSIEN 14841:2005 (E) 8 Annex A (informative) Checklist for rail tanker handl
43、ing A.1 Rail tanker and delivery information Loaded at: Rail tanker No.: Date in: Date out: Ao/A-Butane B-Propane/Butane Mixture according to the accompanying paper: C-Propane Licensed Copy: Wang Bin, na, Tue Apr 18 03:41:50 BST 2006, Uncontrolled Copy, (c) BSIEN 14841:2005 (E) 9 A.2 Condition of ra
44、il tanker When receiving: At return: 1. external check OK yes/no yes/no 2. blind flanges/caps OK, all bolts in place and tight yes/no yes/no 3. tamper evident seal OK yes/no 4. gaskets OK yes/no yes/no 5. no LPG leaks yes/no yes/no 6. no hydraulic leaks yes/no yes/no 7. no external mechanical damage
45、 yes/no yes/no 8. foot valve OK yes/no yes/no 9. emergency screw not activated yes/no yes/no 10. permanent marking legible yes/no yes/no 11. sign 196523in place yes/no yes/no12. flame symbols in place: red diamond yes/no yes/no 13. red triangle (model 13 RID) yes/no yes/no 14. consignment note check
46、ed yes/no yes/no 15. no other faults yes/no yes/no Description of faults (number of fault/description): Accepted for discharge Yes/no Name/company Licensed Copy: Wang Bin, na, Tue Apr 18 03:41:50 BST 2006, Uncontrolled Copy, (c) BSIEN 14841:2005 (E) 10 A.3 Securing of a faulty rail tanker Rail tanke
47、r secured by brake and drag shoe yes/no Earthing connection made yes/no Site safety distances maintained yes/no Wire connected with rail hook/pneumatic yes/no Faults reported (see A.2) yes/no Company: Telephone no.: Reported by: Talked to Mr./Mrs.: And received following order: Other comments: Fault
48、s discovered by: Site address/Date: Branch/filling company: Licensed Copy: Wang Bin, na, Tue Apr 18 03:41:50 BST 2006, Uncontrolled Copy, (c) BSIEN 14841:2005 (E) 11 Annex B (informative) Identification of rail tankers International Transport Regulation (RID) requires marking/Identification of the r
49、ail tanker on the tank name plate which, for LPG transport, covers the following: 1) Approval Number 2) Name or Identification of Manufacturer 3) Manufacturer Number 4) Year of construction 5) Test pressure (MPa) 6) Capacity)(l) 7) Maximum operating temperature (C) 8) Date of initial and last inspection (xx=month/yy=year) 9) Material quality and material standard of tank shell 10) Maximum operating pressure (design pressure)(MPa) 11) Insulation 12) Acceptable gases Maximum mass (kg) Butane Isobutane Butane mixture Propane Propene
