1、BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06Tanks for transport of dangerous goods - Service equipment for tanks - Emergency pressure relief valveBS EN 14596:2018EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 14596 August 2018 ICS 13.300; 23.020.20; 23.060.
2、40 Supersedes EN 14596:2005English Version Tanks for transport of dangerous goods - Service equipment for tanks - Emergency pressure relief valve Citernes destines au transport de matires dangereuses - quipements de service pour citernes - Clapet de surpression accidentelle Tanks fr die Befrderung g
3、efhrlicher Gter - Bedienungsausrstung von Tanks - Notentlastungsventil This European Standard was approved by CEN on 23 April 2018. 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 stan
4、dard 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 a
5、ny 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 Rep
6、ublic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.
7、 EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels 2018 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 14596:2
8、018 ENational forewordThis British Standard is the UK implementation of EN 14596:2018. It supersedes BS EN 14596:2005, which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee AUE/18, Tanks for the transport of dangerous goods.A list of organizations represente
9、d on this committee can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2018 Published by BSI Standards Limited 2018ISBN 978 0 580 942
10、99 0ICS 23.020.20; 23.060.40; 13.300Compliance with a British Standard cannot confer immunity from legal obligations. This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 September 2018.Amendments/corrigenda issued since publicationDate Text af
11、fectedBRITISH STANDARDBS EN 14596:2018EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 14596 August 2018 ICS 13.300; 23.020.20; 23.060.40 Supersedes EN 14596:2005English Version Tanks for transport of dangerous goods - Service equipment for tanks - Emergency pressure relief valve Citernes destin
12、es au transport de matires dangereuses - quipements de service pour citernes - Clapet de surpression accidentelle Tanks fr die Befrderung gefhrlicher Gter - Bedienungsausrstung von Tanks - Notentlastungsventil This European Standard was approved by CEN on 23 April 2018. CEN members are bound to comp
13、ly 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
14、 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 sa
15、me 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
16、, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, 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: Rue de la Science 23, B-1040
17、 Brussels 2018 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 14596:2018 EBS EN 14596:2018EN 14596:2018 (E) 2 Contents Page European foreword 3 Introduction . 5 1 Scope. 6 2 Normative references . 6 3 Terms and definitions 6 4 Fun
18、ctions 6 5 Design characteristics 7 5.1 Relieving pressure 7 5.2 Weather protection 7 5.3 Drop test . 7 5.4 Vapour venting performance 7 5.5 Temperature range 7 5.6 Materials of construction . 7 5.7 Dimensional characteristics . 7 5.8 Electrical resistance . 7 5.9 Optional function 8 6 Tests 8 6.1 G
19、eneral 8 6.2 Production tests 8 6.3 Type tests . 9 7 Marking 11 8 Installation, operating and maintenance instructions 11 Annex A (normative) Drop test apparatus 12 Annex B (informative) Minimum vapour venting capacity for fire engulfment relief 13 Bibliography 14 BS EN 14596:2018EN 14596:2018 (E) 3
20、 European foreword This document (EN 14596:2018) has been prepared by Technical Committee CEN/TC 296 “Tanks for transport of dangerous goods”, the secretariat of which is held by AFNOR. This European Standard shall be given the status of a national standard, either by publication of an identical tex
21、t or by endorsement, at the latest by February 2019, and conflicting national standards shall be withdrawn at the latest by February 2019. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN shall not be held responsible for ident
22、ifying any or all such patent rights. This document supersedes EN 14596:2005. This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association. This edition of EN 14596 has the following significant changes from the earlier standard: Int
23、roduction and relieving pressure changed to reflect the change in ADR tank classification from low pressure tanks to gravity discharge tanks; a note regarding weather protection; a vapour venting performance test has been added; the keeping period for test results clarified; drop test rig, (Annex A)
24、, dimensions of sand boxes improved; venting capacity table moved to new annex (Annex B) and made informative. This document forms part of a coherent standards programme (i.e. Tanks for transport of liquid dangerous goods with vapour pressure not exceeding 110 kPa (absolute pressure) at 50 C and pet
25、rol - Service equipment). This standards programme comprises the following standards: EN 13081, Tanks for transport of dangerous goods Service equipment for tanks Vapour collection adaptor and coupler EN 13082, Tanks for transport of dangerous goods - Service equipment for tanks - Vapour transfer va
26、lve. EN 13083, Tanks for transport of dangerous goods - Service equipment for tanks Adaptor for bottom loading and unloading. EN 13308, Tanks for transport of dangerous goods - Service equipment for tanks - Non-pressure balanced footvalve. EN 13314, Tanks for transport of dangerous goods - Service e
27、quipment for tanks - Fill hole cover. BS EN 14596:2018EN 14596:2018 (E) 4 EN 13315, Tanks for transport of dangerous goods - Service equipment for tanks - Gravity discharge coupler. EN 13316, Tanks for transport of dangerous goods - Service equipment for tanks - Pressure balanced footvalve. EN 13317
28、, Tanks for transport of dangerous goods - Service equipment for tanks - Manhole cover assembly. EN 14595, Tanks for transport of dangerous goods - Service equipment Breather device. EN 14596, Tanks for transport of dangerous goods - Service equipment for tanks - Emergency pressure relief valve EN 1
29、6249, Tanks for transport of dangerous goods Service equipment Cap for the adaptor for bottom loading and unloading EN 16257, Tanks for transport of dangerous goods Service equipment Footvalve sizes other than 100 mm dia. (nom) EN 16522, Tanks for transport of dangerous goods Service equipment for t
30、anks Flame arresters for breather devices 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 Y
31、ugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 14596:2018EN 14596:2018 (E) 5 I
32、ntroduction An emergency pressure relief valve allows venting from a tank compartment during excess pressure. The emergency pressure relief valve may, in addition, perform the closing and opening functions of a fill hole cover, as specified in EN 13314 1. The emergency pressure relief valve is fitte
33、d to gravity discharge tanks and should not be considered as a pressure tank safety valve as defined in ADR 2. The function of the emergency pressure relief valve may also be performed by the fill hole cover in accordance with EN 13314. BS EN 14596:2018EN 14596:2018 (E) 6 1 Scope This document cover
34、s the emergency pressure relief valve. It specifies the performance requirements and the critical dimensions of the emergency pressure relief valve. It also specifies the tests necessary to verify the compliance of the equipment with this document. The service equipment specified by this document is
35、 suitable for use with liquid petroleum products and other dangerous substances of Class 3 of ADR 2 which have a vapour pressure not exceeding 110 kPa at 50 C and petrol, and which have no sub-classification as toxic or corrosive. 2 Normative references The following documents are referred to in the
36、 text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 12266-1:2012, Industrial valves - Testin
37、g of metallic valves - Part 1: Pressure tests, test procedures and acceptance criteria - Mandatory requirements EN 12266-2:2012, Industrial valves - Testing of metallic valves - Part 2: Tests, test procedures and acceptance criteria - Supplementary requirements EN 14564, Tanks for transport of dange
38、rous goods - Terminology ISO 2859-1, Sampling procedures for inspection by attributes Part 1: Sampling schemes indexed by acceptance quality limit (AQL) for lot-by-lot inspection 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN 14564 and the following
39、apply. ISO and IEC maintain terminological databases for use in standardization at the following addresses: IEC Electropedia: available at http:/www.electropedia.org/ ISO Online browsing platform: available at http:/www.iso.org/obp 3.1 relieving pressure pressure at which the emergency pressure reli
40、ef valve starts to open 4 Functions When in any orientation, the emergency pressure relief valve shall function as follows: open, to relieve excess pressure within the tank compartment; and close, when the excess pressure has been relieved; and when closed, contain the substance within the tank comp
41、artment BS EN 14596:2018EN 14596:2018 (E) 7 5 Design characteristics 5.1 Relieving pressure The emergency pressure relief valve shall be vapour and liquid tight up to its relieving pressure. The relieving pressure of the emergency pressure relief valve shall be specified by the manufacturer and shal
42、l exceed the pressure arising from 110 % of the sum of: the maximum static head of liquid which would be applied by the densest substance in the tank compartment to which the emergency pressure relief valve shall be fitted, and the specified relieving pressure of the breather device fitted to the sa
43、me compartment. 5.2 Weather protection The emergency pressure relief valve shall be designed, or provision made, to eliminate the accumulation of water, which could freeze and impair the operation of the valve. If a cover is used to provide the weather protection, then the cover shall not affect the
44、 operation or performance of the valve. 5.3 Drop test Each type of emergency pressure relief valve shall be structurally capable of withstanding, without leakage or permanent deformation that would affect its structural integrity, a drop test as described in 6.3.4. 5.4 Vapour venting performance The
45、 minimum vapour venting capacity of the valve shall be reached at a pressure less than the test pressure of the tank compartment to which it is attached. 5.5 Temperature range Unless otherwise specified, the design temperature range shall be 20 C to +50 C. Where the emergency pressure relief valve i
46、s subjected to more severe conditions, the design temperature range shall be extended to 40 C or +70 C as applicable. 5.6 Materials of construction The manufacturer shall provide, with the equipment, a full material specification for those parts which may come into contact with the substances descri
47、bed in Clause 1. 5.7 Dimensional characteristics The height of any part of the emergency pressure relief valve shall not exceed 150 mm, above its mounting face, when in the fully open position. 5.8 Electrical resistance The electrical resistance between any conductive part of the emergency pressure
48、relief valve, which may come into contact with the dangerous substances, and the main body of the valve shall not exceed 1 106 Provision shall be made for bonding the main body of the valve to the tank such that the electrical resistance between the two shall not exceed 10 BS EN 14596:2018EN 14596:2
49、018 (E) 8 5.9 Optional function The emergency pressure relief valve may perform the opening and closing functions of the fill hole cover as specified in EN 13314. 6 Tests 6.1 General Two classes of tests are required: production tests and type tests. Testing methods and procedures shall conform to EN 12266-1 and EN 12266-2 except as specified within this document. Unless otherwise specified, test fluids shall be air or other suitable gas. The choice of the fluid is the responsibility o
