1、BS EN ISO 20421-2:2017Cryogenic vessels Large transportable vacuum-insulated vesselsPart 2: Operational requirements (ISO 20421-2:2017)BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06BS EN ISO 20421-2:2017 BRITISH STANDARDNational forewordThis British Standard is the
2、 UK implementation of EN ISO 20421-2:2017. It supersedes BS EN 13530-3:2002 which iswithdrawn.The UK participation in its preparation was entrusted to Technical Committee PVE/18, Cryogenic vessels.A list of organizations represented on this committee can be obtained on request to its secretary.This
3、publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2017.Published by BSI Standards Limited 2017ISBN 978 0 580 78166 7 ICS 23.020.40 Compliance with a British Standard cannot confer i
4、mmunity from legal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 28 February 2017.Amendments/corrigendum issued since publicationDate T e x t a f f e c t e dEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 20421-2 Februa
5、ry 2017 ICS 23.020.40 Supersedes EN 13530-3:2002English Version Cryogenic vessels - Large transportable vacuum-insulated vessels - Part 2: Operational requirements (ISO 20421-2:2017) Rcipients cryogniques - Grands rcipients transportables, isols, sous vide - Partie 2: Exigences de fonctionnement (IS
6、O 20421-2:2017) Kryo-Behlter - Groe ortsbewegliche vakuumisolierte Behlter - Teil 2: Betriebsanforderungen (ISO 20421-2:2017) This European Standard was approved by CEN on 15 February 2017. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for g
7、iving 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 European Standard exists in three o
8、fficial 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 the national standards bodies
9、 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, Romania, Serbia, Slovakia, Sloven
10、ia, 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 2017 CEN All rights of exploitation in any form and by any means reserved w
11、orldwide for CEN national Members. Ref. No. EN ISO 20421-2:2017 EBS EN ISO 20421-2:2017EN ISO 20421-2:2017 (E) 3 European foreword This document (EN ISO 20421-2:2017) has been prepared by Technical Committee ISO/TC 220 “Cryogenic vessels” in collaboration with Technical Committee CEN/TC 268 “Cryogen
12、ic vessels and specific hydrogen technologies applications” 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 text or by endorsement, at the latest by August 2017, and conflicting national standar
13、ds shall be withdrawn at the latest by August 2017. Attention is drawn to the possibility that 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 13530-
14、3:2002. This document has been prepared under a mandate given to CEN by the European Commission 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: A
15、ustria, 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, Romania, Serbia, Slovakia, Slovenia, S
16、pain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 20421-2:2017 has been approved by CEN as EN ISO 20421-2:2017 without any modification. BS EN ISO 20421-2:2017ISO 20421-2:2017(E)Foreword ivIntroduction v1 Scope . 12 Normative references 13 Terms and definit
17、ions . 14 Preliminaries before putting into service 24.1 General . 24.2 Marking and labelling . 24.2.1 Marking 24.2.2 Labelling (or placarding) 34.3 Handover documents 35 Personnel training 36 General safety requirements . 46.1 General . 46.2 Safety considerations 47 Putting into service 58 Location
18、 . 59 Transport . 610 Filling 610.1 General . 610.2 Prefill checks . 710.3 Preparations 710.4 After-fill check . 811 Product withdrawal . 812 Change of service 813 Taking out service . 914 Maintenance and repair 915 Periodic inspection .1016 Additional requirements for flammable gases 1116.1 General
19、 safety requirements 1116.1.1 General. 1116.1.2 Electrical equipment .1116.1.3 Grounding (earthing) system . 1116.2 Putting into service (see also Clause 7) 1216.3 Location (see also Clause 8) . 1216.4 Transport (see also Clause 9) 1216.5 Filling (see also Clause 10) 1216.6 Change of service (see al
20、so Clause 12) 1216.7 Taking out of service (see also Clause 13) . 1216.8 Maintenance and repair (see also Clause 14) 1216.9 Emergency equipment and procedures . 13Bibliography .14 ISO 2017 All rights reserved iiiContents PageBS EN ISO 20421-2:2017ISO 20421-2:2017(E)ForewordISO (the International Org
21、anization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been establi
22、shed has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardizatio
23、n.The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the different types of ISO documents should be noted. This document was drafted in accordance with t
24、he editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/ directives).Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of any p
25、atent rights identified during the development of the document will be in the Introduction and/or on the ISO list of patent declarations received (see www .iso .org/ patents).Any trade name used in this document is information given for the convenience of users and does not constitute an endorsement
26、.For an explanation on the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see the following URL: www .iso .org/ iso/ foreword .html.T
27、he committee responsible for this document is ISO/TC 220, Cryogenic vessels.This second edition cancels and replaces the first edition (ISO 20421-2:2005), which has been technically revised.A list of all parts in the ISO 20421 series can be found on the ISO website.iv ISO 2017 All rights reservedBS
28、EN ISO 20421-2:2017ISO 20421-2:2017(E)IntroductionElements of this document support the requirements of the UN-Recommendations on the Transport of Dangerous Goods and other international, national or local requirements.Large transportable cryogenic vessels are often partly equipped by the manufactur
29、er, but may be completed or re-equipped by another party, such as the operator or owner. For this reason, some of the scope of this document, which includes putting into service, inspection, filling, maintenance and emergency procedures, overlaps with ISO 20421-1.This document applies to vessels for
30、 cryogenic fluids, primarily as specified in ISO 20421-1. It may also be used for vessels for cryogenic fluids manufactured and designed to other standards, e.g. EN 13530-2. In case of conflict between the requirements of this document with applicable regulations, regulations take precedence. ISO 20
31、17 All rights reserved vBS EN ISO 20421-2:2017BS EN ISO 20421-2:2017Cryogenic vessels Large transportable vacuum-insulated vessels Part 2: Operational requirements1 ScopeThis document specifies operational requirements for large transportable vacuum-insulated cryogenic vessels.These operational requ
32、irements include putting into service, filling, withdrawal, transport within the location, storage, maintenance, periodic inspection and emergency procedures.For the transport of these vessels by public road, rail, waterway, sea and air, additional requirements can apply; these are defined in specif
33、ic regulations.2 Normative referencesThe following documents are referred to in the 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 docum
34、ent (including any amendments) applies.ISO 20421-1, Cryogenic vessels Large transportable vacuum-insulated vessels Part 1: Design, fabrication, inspection and testing3 Terms and definitionsFor the purposes of this document, the following terms and definitions apply.ISO and IEC maintain terminologica
35、l databases for use in standardization at the following addresses: IEC Electropedia: available at h t t p :/ www .electropedia .org/ ISO Online browsing platform: available at h t t p :/ www .iso .org/ obp3.1putting into serviceoperation by which a new vessel being used for the first time or an exis
36、ting vessel being returned to service is prepared for useNote 1 to entry: Initial inspections and tests are covered in ISO 20421-1 or similar design standards, e.g. EN 13530-2.3.2fillingoperation by which a transportable vessel undergoes a prefill check, filling with a cryogenic fluid and an after-f
37、ill check3.3withdrawaloperation by which the product is taken from a vessel connected to the supply systemINTERNATIONAL STANDARD ISO 20421-2:2017(E) ISO 2017 All rights reserved 1BS EN ISO 20421-2:2017ISO 20421-2:2017(E)3.4outdoorlocation outside of any building or structure and not enclosed by more
38、 than two walls or one wall if a roof is also present3.5undergroundarea or room whose ground or floor is on all sides significantly lower than the adjacent ground surfaces3.6large transportable cryogenic vesselthermally insulated vessel of more than 450 l intended for the transport of one or more cr
39、yogenic fluids, consisting of an inner vessel, an outer jacket, all of the valves and service equipment together with the structural partsNote 1 to entry: The large transportable cryogenic vessel comprises a complete assembly that is ready for service.Note 2 to entry: A “large transportable cryogeni
40、c vessel” is hereinafter referred to as “vessel”.3.7authorized personperson authorized by the applicable regulations3.8enterpriseany person or company that has a legal duty of care3.9fillerany enterprise which loads cryogenic fluids into a cryogenic vessel3.10ownerenterprise that legally owns the cr
41、yogenic vessel3.11operatorany enterprise for filling, storage, transport and withdrawal of cryogenic product3.12holding timetime that will elapse from the establishment of the initial filling condition until the pressure has risen due to heat influx to the lowest set pressure of the pressure limitin
42、g device(s)4 Preliminaries before putting into service4.1 GeneralBefore putting into service, verification shall take place to ensure that the vessel is suitable for the intended service and that the marking, labelling and handover documents are complete.4.2 Marking and labelling4.2.1 MarkingMarking
43、 shall be in accordance with the applicable design standard and/or regulations, e.g. ISO 20421-1.2 ISO 2017 All rights reservedBS EN ISO 20421-2:2017ISO 20421-2:2017(E)4.2.2 Labelling (or placarding)For labelling, the following shall be affixed:a) a flow sheet denoting operation;b) danger labels and
44、 marks in accordance with transport regulations;c) risk and safety phrases associated with the gas content;d) name of the owner;e) name of the operator;f) actual holding time for gases being transported;g) maximum permissible gross mass;h) unladen (tare) mass;i) an unshortened identification of the
45、fluid which is transported in accordance with the transport andsubstance regulations and its net mass in accordance with the documentation. As an alternative,this information can be included in a transport document.NOTE 1 Items a) to i) can appear on the vessel, name plate or transport document depe
46、nding on the requirements of the particular transport mode or operator requirements.NOTE 2 Items e) to i) can be required by the design standards and do not need to be repeated.Specific transport regulations shall always be consulted prior to the carriage. The holding time shall be calculated for ea
47、ch journey in accordance with applicable transport regulations.4.3 Handover documentsIn addition to the manufacturers documentation, where necessary, the cryogenic vessel shall be accompanied by vessel-specific documents and instructions for all items supplied covering the operation, auxiliary equip
48、ment, and inspection records.These documents shall be retained by the owner of the vessel.The operator shall have appropriate instructions available. Such instructions may be attached to the vessel in a permanent manner, or carried by or available to the operator.5 Personnel trainingOnly persons tra
49、ined for the specific task shall be allowed to put into service, fill, handle, operate or maintain the vessel and its equipment.The training programme shall include normal procedures, product and hazard identification, safe operating limits, emergency procedures, ISO 2017 All rights reserved 3BS EN ISO 20421-2:2017ISO 20421-2:2017(E) physical and chemical properties of the vessels content and their effects on the human body, personal protection, and confined spaces entry, if applicable.Training shall be repeated as necessary to
