BS-EN-13121-2-2003.pdf

BRITISH STANDARD BS EN 13121-2:2003 GRP tanks and vessels for use above ground Part 2: Composite materials Chemical resistance The European Standard EN 13121-2:2003 has the status of a British Standard ICS 23.020.10 ? Licensed Copy: sheffieldun sheffieldun, na, Sun Oct 29 09:56:49 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 13121-2:2003 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 14 October 2003 © BSI 14 October 2003 ISBN 0 580 42767 6 National foreword This British Standard is the official English language version of EN 13121-2:2003. The UK participation in its preparation was entrusted to Technical Committee PRI/5, UK steering committee for CEN/TC210 GRP tanks which has the responsibility to: A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “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 with 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 the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 31 and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. DateComments Licensed Copy: sheffieldun sheffieldun, na, Sun Oct 29 09:56:49 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM EN 13121-2 October 2003 ICS 23.020.10 English version GRP tanks and vessels for use above ground - Part 2: Composite materials - Chemical resistance Réservoirs et récipients en PRV pour utilisation hors sol - Partie 2: Matériaux composites - Résistance chimique Oberirdische GFK-Tanks und -Behälter - Teil 2: Verbundwerkstoffe - Chemische Widerstandsfähigkeit This European Standard was approved by CEN on 26 June 2003. 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 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 Management Centre 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, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels © 2003 CENAll rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 13121-2:2003 E Licensed Copy: sheffieldun sheffieldun, na, Sun Oct 29 09:56:49 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 13121-2:2003 (E) 2 Contents Page Foreword3 Introduction.4 1Scope 5 2Normative references 5 3Definitions.5 4Protective layers 6 5Determination of partial design factor, A2.7 Annex A (normative) Determination of partial design factor, A2, in accordance with media lists12 Annex B (normative) Determination of partial design factor, A2, by service experience.21 Annex C (informative) Evaluation of partial design factor, A2, by testing in situ or by laboratory testing 22 Annex Z (informative) Relationship between this European Standard .31 Annex ZA and the Essential requirements of EU Directive 97/23/EC (PED)31 Licensed Copy: sheffieldun sheffieldun, na, Sun Oct 29 09:56:49 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 13121-2:2003 (E) 3 Foreword This document (EN 13121-2:2003) has been prepared by Technical Committee CEN/TC 210 “GRP tanks and vessels”, the secretariat of which is held by DIN. 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 April 2004, and conflicting national standards shall be withdrawn at the latest by April 2004. This European Standard has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association and supports essential requirements of EU Directive 97/23/EC. For relationship with this European Directive see informative Annex ZA, which is an integral part of this standard. This standard is Part 2 of EN 13121 which in total covers materials, design, manufacture, inspection, delivery, installation and maintenance of GRP tanks and vessels for use above ground. This Part 2 specifies requirements for chemical resistance of composite materials used for GRP tanks and vessels for the storage or processing of fluids, for use above ground. The tanks and vessels may be factory made or site built, with or without lining. Annexes A and B are normative. Annex C is informative. This document includes a bibliography. 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, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and the United Kingdom. Licensed Copy: sheffieldun sheffieldun, na, Sun Oct 29 09:56:49 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 13121-2:2003 (E) 4 Introduction European Standard EN 13121 consists of the following parts under the general title “GRP tanks and vessels for use above ground“: Part 1 Raw materials Specification conditions and acceptance conditions Part 2 Composite materials - Chemical resistance Part 3 Design and workmanship Part 4 Delivery, installation and maintenance These four parts together define the responsibilities of the tank or vessel manufacturer, the materials manufacturers or suppliers and the purchaser. The design and manufacture of GRP tanks and vessels involve a number of different materials such as resins, thermoplastics and reinforcing fibres and a number of different manufacturing methods. It is implicit that tanks and vessels conforming to this Standard should be made only by manufacturers who are competent and suitably equipped to fulfil all requirements, using materials manufactured by competent and experienced material manufacturers. EN 13121-1 gives the requirements necessary to establish that the GRP material and any thermoplastic lining will have the required chemical and thermal resistance to the service conditions. EN 13121-1 specifies the requirements for the specification conditions and acceptance conditions for GRP and thermoplastic materials, which are necessary in order to establish the chemical resistance properties of these materials in accordance with this Part of the standard. EN 13121-2 gives the requirements necessary to establish that the GRP material and any thermoplastic lining willl have sufficient chemical and thermal resistance to service conditions. Part 2 defines the requirements for the protective layer and the structural laminate as well as defining methods for proof of suitability to meet the chemical/thermal effects caused by the fluids and of determination of the partial design factor, A2, as required for design in accordance with prEN 13121-3. Five methods are described use of Media Lists, use of resin manufacturers data, use of thermoplastics manufacturers data, service experience and sample testing. The manufacturer of the tank or vessel may choose any one of these methods subject to here being sufficient data available in that method for the particular application. Together with the requirements and acceptance conditions for the raw materials determined in EN 13121-1, the design and workmanship requirements as determined in prEN 13121-3 and the delivery, handling, installation and maintenance recommendations given in EN 13121-4, EN 13121-2 completes the total standard's requirements. Licensed Copy: sheffieldun sheffieldun, na, Sun Oct 29 09:56:49 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 13121-2:2003 (E) 5 1 Scope This European Standard gives requirements for chemical resistance of composite materials used for GRP tanks and vessels for storage or processing of fluids, for use above ground. The tanks or vessels may be factory made or site built, with or without lining. 2 Normative references This European Standard incorporates, by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references, the latest edition of the publication referred to applies. EN 59, Glass reinforced plastics Measurement of hardness by means of a Barcol impressor. EN 590, Automotive fuels Diesel - Requirements and test methods EN 13121-1:2003, GRP tanks and vessels for use above ground Part 1: Raw materials Specification conditions and acceptance conditions. prEN 13121-3, GRP tanks and vessels for use above ground Part 3: Design and workmanship. EN 13121-4, GRP tanks and vessels for use above ground Part 4: Delivery, installation and maintenance. EN ISO 4599, Plastics Determination of resistance to environmental stress cracking (ESC) Bent strip method (ISO 4599:1986). EN ISO 6252, Plastics Determination of Environmental Stress Cracking (ESC) Constant-tensile-stress method (ISO 6252:1992). EN ISO 14125:1998, Fibre-reinforced plastic composites Determination of flexural properties (ISO 14125:1998). ISO 1172, Textile-glass-reinforced plastics. Prepregs, moulding compounds and laminates Determination of the textile-glass and mineral-filler content Calcination methods. ISO 4433-1, Thermoplastics pipes Resistance to liquid chemicals Classification Part 1: Immersion test method. ISO 4433-2, Thermoplastics pipes Resistance to liquid chemicals Classification Part 2: Polyolefin pipes. ISO 4433-3, Thermoplastics pipes Resistance to liquid chemicals Classification Part 3: Unplasticized poly(vinyl chloride) (PVC-U), high-impact poly(vinyl chloride) (PVC-HI) and chlorinated poly(vinyl chloride) (PVC-C) pipes. ISO 4433-4, Thermoplastics pipes Resistance to liquid chemicals Classification Part 4: Poly(vinylidene fluoride) (PVDF) pipes. 3 Definitions For the purposes of this standard in addition to the definitions given in EN 13121-1:2003, the following definitions apply: 3.1 resin layer (RL) a layer of resin with or without additives in accordance with clause 7 of EN 13121-1:2003, but without nonwovens or any other fibre Licensed Copy: sheffieldun sheffieldun, na, Sun Oct 29 09:56:49 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 13121-2:2003 (E) 6 3.2 veil layer (VL) a layer of resin with or without additives in accordance with clause 7 of EN 13121-1:2003, with one or two surface nonwovens 3.3 single protective layer (SPL) a protective layer of resin with or without surface nonwovens to meet slight or less significant effects caused by service conditions 3.4 chemical resistant layer (CRL) a protective layer of resin with or without surface nonwovens to meet more significant or major effects caused by service conditions. 3.5 thermoplastic lining (TPL) a protective using thermoplastic materials as a lining to meet effects caused by service conditions 3.6 sample a piece of laminate or thermoplastic sheet for purposes of testing 3.7 specimen a piece of a sample prepared for purposes of testing 3.8 test piece a piece of a specimen for purposes of mechanical testing only 3.9 maximum temperature Tm temperature given by the resin manufacturer or the thermoplastics manufacturer referring to a specified fluid 3.10 maximum design temperature Td maximum temperature for determination of the partial design factor, A2, by different methods of this standard. 4 Protective layers 4.1 General requirements The inner surface of all laminates shall consist of a protective layer. The protective layer shall be either a single protective layer (SPL) or a chemical resistant layer (CRL) or a thermoplastic lining (TPL). The type of protective layer shall be selected on the basis of the ability to prevent, or limit to an acceptable level, chemical attack on the laminate. In order to do this, it shall be chemically resistant to the service conditions, allow limited diffusion of service fluids and shall not suffer environmental stress cracking. The TPL may require stress relief to prevent environmental stress cracking, see prEN 13121-3. The required thickness of the protective layer shall be in accordance with Table 1. When required, flammability and/or electrical conductivity shall be taken into account and/or the protective layer shall be selected on the basis of its ability to maintain the purity of the service fluids. The requirements for workmanship of the protective layer are defined in prEN 13121-3. For application in contact with foodstuffs the relevant regulations shall be considered. Licensed Copy: sheffieldun sheffieldun, na, Sun Oct 29 09:56:49 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 13121-2:2003 (E) 7 Table 1 Required thicknesses of protective layers Protective layer Required thickness mm SPL0,4 to 0,6 CRL2,5 to 4,0 PVC-U3,0 to 4,5 PP-H, -B, -R3,0 to 6,0 PVDF2,4 to 4,0 E-CTFE, FEP, PFA1,7 to 4,0 4.2 Single protective layer (SPL) The single protective layer SPL) shall be either a veil layer (VL) or a resin layer (RL). 4.3 Chemical resistant layer (CRL) The chemical resistant layer (CRL) shall be a single or double veil layer (VL) followed by a layer or layers of either chopped strand mat or sprayed fibres with a total mass per unit area greater than or equal to 900 g/m2. The fibre content shall be betwee