BS-EN-ISO-11120-1999.pdf

BRITISH STANDARD BS EN ISO 11120:1999 Gas cylinders Refillable seamless steel tubes for compressed gas transport, of water capacity between 150 l and 3000 l Design, construction and testing The European Standard EN ISO 11120:1999 has the status of a British Standard ICS 23.020.30 Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 18 16:09:19 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN ISO 11120:1999 This British Standard, having been prepared under the direction of the Engineering Sector Committee, was published under the authority of the Standards Committee and comes into effect on 15 June 1999 © BSI 03-2000 ISBN 0 580 32366 8 National foreword This British Standard is the English language version of EN ISO 11120:1999. It is identical with ISO 11120:1999. The UK participation in its preparation was entrusted by Technical Committee PVE/3, Gas containers, to Subcommittee PVE/3/3, Transportable gas cylinders Cylinder design and construction and testing at time of manufacture, which has the responsibility to: aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. A list of organizations represented on this subcommittee can be obtained on request to its secretary. Cross-references Attention is drawn to the fact that CEN and CENELEC Standards normally include an annex which lists normative references to international publications with their corresponding European publications. The British Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, the EN ISO title page, page 2, the ISO title page, pages ii to iv, pages 1 to 20, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover. Amendments issued since publication Amd. No.DateComments Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 18 16:09:19 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN ISO 11120:1999 © BSI 03-2000i Contents Page National forewordInside front cover Foreword2 Forewordiii Text of ISO 111201 Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 18 16:09:19 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ii blank Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 18 16:09:19 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM EN ISO 11120 March 1999 ICS 23.020.30 English version Gas cylinders Refillable seamless steel tubes for compressed gas transport, of water capacity between 150 l and 3 000 l Design construction and testing (ISO 11120:1999) Bouteilles à gaz Tubes en acier sans soudure rechargeables dune contenance en eau de 150 l à 3 000 l Conception, construction et essais (ISO 11120:1999) Ortsbewegliche Gasflaschen Nahtlose wiederbefüllbare Großflaschen aus Stahl mit einem Fassungsraum zwischen 150 l und 3 000 l Gestaltung, Konstruktion und Prüfung (ISO 11120:1999) This European Standard was approved by CEN on 20 February 1999. 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 bibliographical references concerning such national standards may be obtained on application to the Central 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 translation under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CEN European Committee for Standardization Comité Européen de Normalisation Europäisches Komitee für Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels © 1999 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 11120:1999 E Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 18 16:09:19 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN ISO 11120:1999 © BSI 03-2000 2 Foreword The text of the International Standard ISO 11120:1999 has been prepared by Technical Committee ISO/TC 58 “Gas cylinders” in collaboration with Technical Committee CEN/TC 23 “Transportable gas cylinders”, the secretariat of which is held by BSI. 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 September 1999, and conflicting national standards shall be withdrawn at the latest by September 1999. This European Standard has been submitted for reference into the RID and/or in the technical annexes of the ADR. Therefore in this context the standards listed in the normative references and covering basic requirements of the RID/ADR not addressed within the present standard are normative only when the standards themselves are referred to in the RID and/or in the technical annexes of the ADR. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. Endorsement notice The text of the International Standard ISO 11120:1999 was approved by CEN as a European Standard without any modification. NOTENormative references to International Standards are listed in Annex ZA (normative). Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 18 16:09:19 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 18 16:09:19 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN ISO 11120:1999 ii © BSI 03-2000 Contents Page Forewordiii Introduction1 1Scope1 2Normative references1 3Definitions1 4Symbols2 5Inspection and testing2 6Materials2 7Design3 8Construction and workmanship4 9Batch tests4 10Tests on every cylinder5 11Special requirements for tubes for embrittling gases6 12Marking7 Annex A (normative) ISO High-pressure gas tube/cylinder chemistry groupings8 Annex B (normative) Ultrasonic inspection8 Annex C (informative) Description, evaluation of manufacturing defects and conditions for rejection of seamless steel tubes at time of visual inspection11 Annex D (informative) Acceptance certificate18 Annex E (informative) Checklist for production testing20 Annex ZA (normative) Normative references to international publications with their relevant European publicationsInside back cover Bibliography20 Figure B.1 Design details and dimensions of the reference notches for longitudinal defects10 Figure B.2 Schematic representation of the reference notches for circumferential defects11 Figure C.1 Dent14 Figure C.2 Dent containing cut or gouge14 Figure C.3 Rib15 Figure C.4 Groove15 Figure C.5 Lamination15 Figure C.6 Neck cracks16 Figure C.7 Tube shoulder folds or cracks before and after machining16 Figure C.8 Shoulder cracks17 Table 1 Chemical composition tolerances3 Table C.1 Manufacturing defects12 Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 18 16:09:19 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN ISO 11120:1999 © BSI 03-2000iii Foreword ISO (the International Organization 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 established 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 standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 3. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. International Standard ISO 11120 was prepared by Technical Committee ISO/TC 58, Gas cylinders, Subcommittee SC 3, Cylinder design. Annex A and Annex B form an integral part of this International Standard. Annex C, Annex D and Annex E are for information only. Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 18 16:09:19 GMT+00:00 2006, Uncontrolled Copy, (c) BSI iv blank Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 18 16:09:19 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN ISO 11120:1999 © BSI 03-20001 Introduction The purpose of this International Standard is to provide a specification for the design, manufacture, inspection and testing of tubes for worldwide usage. The objective is to balance design and economic efficiency against international acceptance and universal utility. This International Standard aims to eliminate concern about climate, duplicate inspections and restrictions currently existing because of lack of definitive International Standards. This International Standard should not be construed as reflecting on the suitability of the practice of any nation or region. 1 Scope This International Standard specifies minimum requirements for the material, design, construction and workmanship, manufacturing processes and tests at manufacture of refillable quenched and tempered seamless steel tubes of water capacities from 150 l up to and including 3 000 l for compressed and liquefied gases exposed to extreme world-wide ambient temperatures (normally between 50 °C and + 65 °C). This International Standard is applicable to tubes with a maximum tensile strength Rm of less than 1 100 MPa. These tubes can be used alone or in batteries to equip trailers or skids (ISO modules) for the transportation and distribution of compressed gases. This International Standard does not include consideration of any additional stresses that may occur during service or transport, e.g. bending stresses, etc. 2 Normative references The following normative documents contain provisions which, through reference in this text, constitute provisions of this International Standard. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. However, parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies. Members of ISO and IEC maintain registers of currently valid International Standards. ISO 148, Steel Charpy impact test (V-notch)1). ISO 6506, Metallic materials Hardness test Brinell test2). ISO 6892, Metallic materials Tensile testing at ambient temperature. ISO 11114-1, Transportable gas cylinders Compatibility of cylinder and valve materials with gas contents Part 1: Metallic materials. ISO 11484, Steel tubes for pressure purposes Qualification and certification of non-destructive testing (NDT) personnel. 3 Definitions For the purposes of this International Standard the following definitions apply. 3.1 yield stress value corresponding to the 0,2 % proof stress, Rp 0,2 3.2 quenching hardening heat treatment in which a tube, which has been heated to a uniform temperature above the upper critical point Ac3 of the steel, is cooled rapidly in a suitable medium 3.3 tempering softening heat treatment which follows quenching, in which the tube is heated to a uniform temperature below the lower critical point Ac1 of the steel 3.4 tube a double ended pressure gas cylinder manufactured from seamless tubing 3.5 batch a quantity of up to 200 tubes of the same nominal diameter, thickness and design made from the same steel cast and subjected to the same heat treatment for the same duration of time 3.6 test pressure required pressure (ph) applied during a pressure test 3.7 design stress factor F ratio of the equivalent wall stress at test pressure (ph) to guaranteed minimum yield stress (Re) 1) To be replaced by ISO 148-1, ISO 148-2 and ISO 148-3. 2) To be replaced by ISO 6506-1, ISO 6506-2 and ISO 6506-3. Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 18 16:09:19 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN ISO 11120:1999 2 © BSI 03-2000 4 Symbols 5 Inspection and testing Evaluation of conformity is required to be performed in accordance with the relevant regulations of the country(ies) where the tubes are to be used. In order to ensure that tubes are in compliance with this International Standard they shall be subject to inspection in accordance with clauses 9 and 10 by an authorized inspection body (hereafter referred to as “the inspector”) recognized in the countries of use. The inspector shall be competent for inspection of tubes. 6 Materials 6.1 General requirements 6.1.1 Materials for the manufacture of tubes shall meet the requirements of 6.2, 6.3 and 6.4. Steels for the fabrication of tubes shall be of nationally or internationally recognized compositions having proven reliability. These steels shall fall within one of the chemical groups as shown in Annex A. New steel compositions, and steels for which limited experience exists in tube/cylinder service, shall be fully tested and approved by a national authority and have been manufactured from not less than five casts of steel. The manufacturer of the finished tube shall provide a detailed specification with tolerances for the supplied tubing including: chemical composition; dimensions; surface quality. 6.1.2 The steel used for the fabrication of tubes shall be fully killed. 6.1.3 The manufacturer of the tubing shall supply certificates of a reference heat treatment r