1、BS EN 14595:2016Tanks for transport ofdangerous goods Serviceequipment Breather deviceBSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06BS EN 14595:2016 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 14595:2016.It supersedes BS EN
2、 14595:2005 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee AUE/18, Tanks for the transport of dangerous goods.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include
3、all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2016.Published by BSI Standards Limited 2016ISBN 978 0 580 85893 2ICS 13.300; 23.020.20Compliance with a British Standard cannot confer immunity fromlegal obligations.This B
4、ritish Standard was published under the authority of theStandards Policy and Strategy Committee on 31 August 2016.Amendments/corrigenda issued since publicationDate T e x t a f f e c t e dBS EN 14595:2016EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 14595 August 2016 ICS 13.300; 23.020.20 Sup
5、ersedes EN 14595:2005English Version Tanks for transport of dangerous goods - Service equipment - Breather device Citernes destines au transport de matires dangereuses - quipement de service pour citernes - Dispositif de respiration Tanks fr die Befrderung gefhrlicher Gter - Bedienungsausrstung - Be
6、lftungseinrichtung This European Standard was approved by CEN on 25 June 2016. 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 bib
7、liographical 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 any other language made by translation under the respo
8、nsibility 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 Republic, Denmark, Estonia, Finland, Former Yugoslav Rep
9、ublic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey andUnited Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMA
10、LISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2016 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 14595:2016 EBS EN 14595:2016EN 14595:2016 (E) 2 Contents Page European fo
11、reword 3 Introduction 5 1 Scope . 6 2 Normative references 6 3 Terms and definitions . 6 4 Functions . 6 5 Design characteristics . 6 5.1 General . 6 5.2 Ingress protection 7 5.3 Pressure ratings 7 5.3.1 Above atmospheric relieving pressure (pressure relief). 7 5.3.2 Below atmospheric relieving pres
12、sure (vacuum) 7 5.3.3 Tank overturn 7 5.4 Flow capacity 7 5.5 Temperature range 7 5.6 Materials of construction . 7 5.7 Dimensional characteristics . 7 5.8 Electrical resistance . 7 6 Tests 7 6.1 General . 7 6.2 Production tests 8 6.2.1 General . 8 6.2.2 Seat tightness test . 8 6.2.3 Overturn seat t
13、ightness test 9 6.3 Type test . 9 6.3.1 General . 9 6.3.2 Seat tightness test . 9 6.3.3 Overturn seat tightness test 9 6.3.4 Drop test 10 6.3.5 Test results . 11 7 Marking . 11 8 Installation, operating and maintenance instructions 11 Annex A (normative) Drop test apparatus 12 BS EN 14595:2016EN 145
14、95:2016 (E) 3 European foreword This document (EN 14595:2016) 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
15、identical text or by endorsement, at the latest by February 2017, and conflicting national standards shall be withdrawn at the latest by February 2017. 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 responsi
16、ble for identifying any or all such patent rights. This document supersedes EN 14595:2005. This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association. The following significant changes were made in this new edition of EN 14595: dev
17、ice name changed to align with ADR, Introduction revised to clarify the combination of breather and safety device as requirements for compliance with this standard and to include reference to EN 16522, EN 12266-2 removed from the normative reference list, requirement for secondary positive means of
18、security clarified, below atmospheric relieving pressure rating clarified, electrical resistance requirements refined, the keeping period for test results clarified, drop test rig, (Annex A), dimensions of sand boxes improved. This document forms part of a coherent standards programme (i.e. Tanks fo
19、r transport of liquid dangerous goods with vapour pressure not exceeding 110 kPa (absolute) at 50 C and petrol Service equipment). This standards programme comprises the following standards: EN 13082, Tanks for transport of dangerous goods Service equipment for tanks Vapour transfer valve; EN 13083,
20、 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 equipment for tanks Fil
21、l hole cover; EN 13315, Tanks for transport of dangerous goods Service equipment for tanks Gravity discharge coupler; BS EN 14595:2016EN 14595:2016 (E) 4 EN 13316, Tanks for transport of dangerous goods Service equipment for tanks Pressure balanced footvalve; EN 13317, Tanks for transport of dangero
22、us 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 16249, Tanks for the transport of dangerou
23、s goods Service equipment Cap for the adaptor for bottom loading and unloading; EN 16257, Tanks for the 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 tanks Flame arresters for breathe
24、r 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 Yugoslav Republic of Macedonia,
25、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. BS EN 14595:2016EN 14595:2016 (E) 5 Introduction The breather device as spec
26、ified includes a safety device to prevent the contents from spilling out if the tank overturns. The breather may be a separate device, or an integral part of another device. Where the breather device is separate from the safety device (to prevent the contents from spilling out of the tank), the func
27、tional performance of these elements in combination is required in order to comply with this standard. Where a flame arrestor is required, EN 16522, Flame arrestors for breather devices, specifies requirements. BS EN 14595:2016EN 14595:2016 (E) 6 1 Scope This European Standard covers the breather de
28、vice used to ensure normal tank compartment breathing. It specifies the performance requirements and the critical dimensions of the breather device. It also specifies the tests necessary to verify compliance of the equipment with this document. The service equipment specified by this document is sui
29、table for use with liquid petroleum products and other dangerous substances of Class 3 of ADR 1 which have a vapour pressure not exceeding 110 kPa (absolute) at 50 C and petrol, and which have no sub-classification as toxic or corrosive. 2 Normative references The following documents, in whole or in
30、 part, are normatively referenced in this document and are indispensable for its application. 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 - Testing o
31、f metallic valves - Part 1: Pressure tests, test procedures and acceptance criteria - Mandatory requirements EN 14564, Tanks for transport of dangerous goods - Terminology EN ISO 228-1, Pipe threads where pressure-tight joints are not made on the threads - Part 1: Dimensions, tolerances and designat
32、ion (ISO 228-1) EN 60529, Degrees of protection provided by enclosures (IP Code) 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 te
33、rms and definitions given in EN 14564 apply. 4 Functions The breather device: shall provide pressure and vacuum breathing for a tank compartment, may provide venting where a specific venting device is not fitted, and shall prevent the spilling out of the contents of the tank in the event of an overt
34、urn. 5 Design characteristics 5.1 General Breather devices shall be of the re-sealing type and may or may not breathe or vent directly to atmosphere. They shall be designed to prevent unauthorized adjustment of the relieving pressure settings. The functions described in Clause 4 may be provided by o
35、ne combined device or by separate independent devices. Discrete devices that are not mounted externally shall have a secondary positive means for being secured. BS EN 14595:2016EN 14595:2016 (E) 7 5.2 Ingress protection The breather device shall be designed, or provision made, to meet the requiremen
36、ts of IP31 in accordance with EN 60529. 5.3 Pressure ratings 5.3.1 Above atmospheric relieving pressure (pressure relief) Breather devices shall have a relieving pressure of not more than 12 kPa(gauge) in their normally installed attitude. 5.3.2 Below atmospheric relieving pressure (vacuum) The reli
37、eving pressure of breather devices shall be between 0,4 kPa (gauge) and 2,5 kPa (gauge) in their normally installed attitude. 5.3.3 Tank overturn The breather device shall be designed to prevent the spilling out of the contents of the tank in the event of an overturn. 5.4 Flow capacity The flow capa
38、city shall be the flow rate (in m3/h) of air (at 20 C) achieved by the breather device at the following pressures: pressure flow capacity: 30 kPa above pressure relieving pressure; vacuum flow capacity: 3 kPa below vacuum relieving pressure. 5.5 Temperature range Unless otherwise specified, the desi
39、gn temperature range shall be 20 C to +50 C. Where the breather device is 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 specificatio
40、n for those parts that may come into contact with the substances described in Clause 1. 5.7 Dimensional characteristics When the breather device is provided with threaded connections, the threads shall conform to EN ISO 228-1. 5.8 Electrical resistance The electrical resistance between any conductiv
41、e part of the device which may come into contact with the dangerous goods and its mounting shall not exceed 1 M. 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 except as specified within this document
42、. BS EN 14595:2016EN 14595:2016 (E) 8 Unless otherwise specified, test fluids shall be air or other suitable gas. The choice of the fluid is the responsibility of the manufacturer. Tests shall be performed on the complete breather device. 6.2 Production tests 6.2.1 General The number, frequency and
43、sampling methods of production test samples shall be not less than those specified within ISO 2859-1 (AQL of 2,5). Production tests shall comprise the following: seat tightness test (EN 12266-1:2012, A.4); and overturn seat tightness test (EN 12266-1:2012, A.4). 6.2.2 Seat tightness test 6.2.2.1 Tes
44、t procedure With the device under test positioned in its normally installed attitude, and closed in a leak -tight condition, a steadily increasing differential test pressure from 0 kPa to the relieving pressure shall be applied. At the devices specified relieving pressure, the differential test pres
45、sure shall be held for a time period in accordance with EN 12266-1:2012, Table A.4. During this period, the leakage rate shall conform to rate B of EN 12266-1:2012, Table A.5. On completion of this test, the differential test pressure shall be steadily reduced to a value equal to 0,8 times the devic
46、es specified relieving pressure, and held for a time period in accordance with EN 12266-1:2012, Table A.4. During this period, the leakage rate shall conform to rate A of EN 12266-1:2012, Table A.5. 6.2.2.2 Acceptance criteria 6.2.2.2.1 General The test shall be considered satisfactory if the follow
47、ing criteria are met. 6.2.2.2.2 Above atmospheric relieving pressure (pressure relief) The specified relieving pressure is not greater than 12 kPa; and at the specified relieving pressure, the leakage rate conforms to rate B of EN 12266-1:2012, Table A.5; and at 0,8 times the specified relieving pre
48、ssure, the leakage rate conforms to rate A of EN 12266-1:2012, Table A.5. 6.2.2.2.3 Below atmospheric relieving pressure (vacuum) The specified relieving pressure is not less than 0,4 kPa (gauge) and not greater than 2,5 kPa (gauge); and at the specified relieving pressure, the leakage rate conforms
49、 to rate B of EN 12266-1:2012, Table A.5; and at 0,8 times the specified relieving pressure, the leakage rate conforms to rate A of EN 12266-1:2012, Table A.5. BS EN 14595:2016EN 14595:2016 (E) 9 6.2.3 Overturn seat tightness test 6.2.3.1 Test procedure The procedure simulates a tank vehicle rolling onto each side and upside down. With the breather device installed in the test position, the test pressure shall be applied to the upstream
