1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationPlastics piping systems for thesupply of gaseous fuels Polyethylene (PE)Part 7: Guidance for the assessment of conformityPD CEN/TS 1555-7:2013National forewordThis Published Docu
2、ment is the UK implementation of CEN/TS 1555-7:2013. Itsupersedes DD CEN/TS 1555-7:2003 which is withdrawn.The UK participation in its preparation was entrusted by Technical CommitteePRI/88, Plastics piping systems, to Subcommittee PRI/88/2, Plastics piping forpressure applications.A list of organiz
3、ations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to include all the necessary provisions of acontract. Users are responsible for its correct application. The British Standards Institution 2013 Published by BSI Standards Limited 2013 IS
4、BN 978 0 580 78519 1 ICS 23.040.01; 91.140.40 Compliance with a British Standard cannot confer immunity from legal obligations.This Published Document was published under the authority of the Standards Policy and Strategy Committee on 31 March 2013.Amendments issued since publicationAmd. No. Date Te
5、xt affectedPUBLISHED DOCUMENTPD CEN/TS 1555-7:2013TECHNICAL SPECIFICATION SPCIFICATION TECHNIQUE TECHNISCHE SPEZIFIKATION CEN/TS 1555-7 January 2013 ICS 23.040.01; 91.140.40 Supersedes CEN/TS 1555-7:2003English Version Plastics piping systems for the supply of gaseous fuels - Polyethylene (PE) - Par
6、t 7: Guidance for the assessment of conformity Systmes de canalisations en plastique pour la distribution de combustibles gazeux - Polythylne (PE) - Partie 7: Guide pour lvaluation de la conformit Kunststoff-Rohrleitungssysteme fr die Gasversorgung - Polyethylen (PE) - Teil 7 : Empfehlungen fr die B
7、eurteilung der Konformitt This Technical Specification (CEN/TS) was approved by CEN on 11 September 2012 for provisional application. The period of validity of this CEN/TS is limited initially to three years. After two years the members of CEN will be requested to submit their comments, particularly
8、 on the question whether the CEN/TS can be converted into a European Standard. CEN members are required to announce the existence of this CEN/TS in the same way as for an EN and to make the CEN/TS available promptly at national level in an appropriate form. It is permissible to keep conflicting nati
9、onal standards in force (in parallel to the CEN/TS) until the final decision about the possible conversion of the CEN/TS into an EN is reached. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Rep
10、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 and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORM
11、ALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2013 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. CEN/TS 1555-7:2013: EPD CEN/TS 1555-7:2013CEN/TS 1555-7:2013 (E) 2 Contents Page Forewo
12、rd . 3 Introduction 4 1 Scope 6 2 Normative references . 6 3 Terms and definitions 7 4 Abbreviated terms 10 5 General . 10 6 Testing and inspection 10 6.1 Grouping . 10 6.1.1 General . 10 6.1.2 Size groups. 11 6.1.3 Fitting groups . 11 6.1.4 Fitting types 11 6.2 Type testing 11 6.3 Batch release tes
13、ts . 19 6.4 Process verification tests 22 6.5 Audit tests 25 6.6 Indirect tests . 28 6.7 One-off products and products produced in very low quantity . 28 6.8 Large diameter products 28 6.9 Documentation . 29 6.9.1 Type test results . 29 6.9.2 Test records . 29 6.9.3 Technical file for certification
14、purposes . 29 Annex A (normative) Change of compound 30 A.1 General . 30 A.2 Change . 30 A.2.1 Change of base polymer 30 A.2.2 Change of grade . 30 A.2.3 Change of pigment . 30 A.2.4 Change of additives other than pigments . 30 A.3 Type testing required for re-evaluation . 30 A.3.1 Changes A.2.1 and
15、 A.2.3.1 . 30 A.3.2 Changes A.2.2.1, A.2.2.2, A.2.2.3, A.2.3.2, A.2.4.1, A.2.4.2 and A.2.4.3 31 Annex B (informative) Basic test matrix for PE compounds and piping products. 32 Bibliography 34 PD CEN/TS 1555-7:2013CEN/TS 1555-7:2013 (E) 3 Foreword This document (CEN/TS 1555-7:2013) has been prepared
16、 by Technical Committee CEN/TC 155 “Plastics piping systems and ducting systems”, the secretariat of which is held by NEN. 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 identi
17、fying any or all such patent rights. This document supersedes CEN/TS 1555-7:2003. EN 1555 is composed of the following parts: EN 1555-1, Plastics piping systems for the supply of gaseous fuels Polyethylene (PE) Part 1: General; EN 1555-2, Plastics piping systems for the supply of gaseous fuels Polye
18、thylene (PE) Part 2: Pipes; EN 1555-3, Plastics piping systems for the supply of gaseous fuels Polyethylene (PE) Part 3: Fittings; EN 1555-4, Plastics piping systems for the supply of gaseous fuels Polyethylene (PE) Part 4: Valves; EN 1555-5, Plastics piping systems for the supply of gaseous fuels P
19、olyethylene (PE) Part 5: Fitness for purpose of the system; CEN/TS 1555-7, Plastics piping systems for the supply of gaseous fuels Polyethylene (PE) Part 7: Guidance for the assessment of conformity (the present Technical Specification). This issue of CEN/TS 1555-7 takes into account the technical c
20、hanges made in the revision of EN 1555-1, -2, -3, -5 and -4, published in 2010 and respectively in 2011. Guidance for the assessment of conformity given in this document has been revised to reflect the changes made to test methods and requirements given in EN 1555-1, -2, -3, -4 and -5. Two new types
21、 of pipe have been introduced, i.e. coextruded pipes and peelalable layer pipes. The sampling procedures and sampling frequencies for these types of pipes have been introduced into the tables for TT, BRT, PVT and AT tests for pipes. According to the CEN/CENELEC Internal Regulations, the national sta
22、ndards organizations of the following countries are bound to announce this Technical Specification: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxe
23、mbourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. PD CEN/TS 1555-7:2013CEN/TS 1555-7:2013 (E) 4 Introduction Figures 1 and 2 are intended to provide general information on the concept of testing and organisat
24、ion of those tests used for the purpose of the assessment of conformity. For each type of test, i.e. type testing (TT), batch release test (BRT), process verification test (PVT), and audit test (AT), this part of EN 1555 details the applicable characteristics to be assessed as well as the frequency
25、and sampling of testing. A typical scheme for the assessment of conformity of compounds, pipes, fittings, valves, joints or assemblies by manufacturers is given in Figure 1. Figure 1 Typical scheme for the assessment of conformity by a manufacturer A typical scheme for the assessment of conformity o
26、f compounds, pipes, fittings, valves, joints or assemblies by manufacturers, including certification, is given in Figure 2. PD CEN/TS 1555-7:2013CEN/TS 1555-7:2013 (E) 5 Figure 2 Typical scheme for the assessment of conformity by a manufacturer, including certification PD CEN/TS 1555-7:2013CEN/TS 15
27、55-7:2013 (E) 6 1 Scope This Technical Specification gives guidance for the assessment of conformity of compounds, products, joints and assemblies in accordance with the applicable part(s) of EN 1555 intended to be included in the manufacturers quality plan as part of the quality management system a
28、nd for the establishment of certification procedures. It is recommended that the quality management system conforms to or is no less stringent than the relevant requirements to EN ISO 9001 2. NOTE 1 If certification is involved, the certification and inspection body is preferably compliant with EN 4
29、5011 3, EN 45012 4 or EN ISO/IEC 17020 5, as applicable. In conjunction with Parts 1 to 5 of EN 1555 (see Foreword), this Technical Specification is applicable to polyethylene (PE) plastics piping systems for the supply of gaseous fuels. It is applicable to PE pipes, fittings, and valves, their join
30、ts and to joints with components of other materials intended to be used under the following conditions: a) a maximum operating pressure, MOP, up to and including 10 bar1); b) an operating temperature of 20 C as reference temperature. NOTE 2 For other operating temperatures, derating coefficients can
31、 be used; see EN 1555-5. For mechanical fittings conforming to ISO 10838-1 6, ISO 10838-2 7 or ISO 10838-3 8, as applicable, guidance for assessment of conformity is not given in this part of EN 1555. When requested, a quality plan based on the tests mentioned in ISO 10838-1 6, ISO 10838-2 7 or ISO
32、10838-3 8, as applicable, should be set up in agreement between user and manufacturer. EN 1555 covers a range of maximum operating pressures and gives requirements concerning colours and additives. NOTE 3 It is the responsibility of the purchaser or specifier to make the appropriate selections from
33、these aspects, taking into account their particular requirements and any relevant national regulations and installation practices or codes. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For
34、dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 1555-1:2010, Plastics piping systems for the supply of gaseous fuels Polyethylene (PE) Part 1: General EN 1555-2:2010, Plastics piping system
35、s for the supply of gaseous fuels Polyethylene (PE) Part 2: Pipes EN 1555-3:2010, Plastics piping systems for the supply of gaseous fuels Polyethylene (PE) Part 3: Fittings EN 1555-4:2011, Plastics piping systems for the supply of gaseous fuels Polyethylene (PE) Part 4: Valves EN 1555-5:2010, Plasti
36、cs piping systems for the supply of gaseous fuels Polyethylene (PE) Part 5: Fitness for purpose of the system 1) 1 bar = 0,1 MPa. PD CEN/TS 1555-7:2013CEN/TS 1555-7:2013 (E) 7 EN ISO 6259-1, Thermoplastics pipes Determination of tensile properties Part 1: General test method (ISO 6259-1) EN ISO 1216
37、2, Thermoplastics materials for pipes and fittings for pressure applications Classification, designation and design coefficient (ISO 12162) EN ISO 13477, Thermoplastics pipes for the conveyance of fluids Determination of resistance to rapid crack propagation (RCP) Small-scale steady-state test (S4 t
38、est) (ISO 13477) 3 Terms and definitions For the purposes of this document, the following terms and definitions given in EN 1555-1:2010, EN 1555-2:2010, EN 1555-3:2010, EN 1555-4:2011 and EN 1555-5:2010 and the following apply. 3.1 certification body impartial body, governmental or non-governmental,
39、 possessing the necessary competence and responsibility to carry out certification of conformity according to given rules of procedure and management Note 1 to entry: A certification body is preferably compliant with EN 45011 3. 3.2 inspection body body that performs inspection Note 1 to entry: A bo
40、dy can be an organisation or part of an organisation. Note 2 to entry: An inspection body is accredited to EN ISO/IEC 17020 5. 3.3 testing laboratory laboratory which measures, tests, calibrates or otherwise determines the characteristics of the performance of materials and products Note 1 to entry:
41、 In the context of this part of EN 1555, the materials and products can be subjected to type testing, batch release testing, process verification testing, audit testing, and witness testing, as applicable. Note 2 to entry: A testing laboratory is preferably compliant with EN ISO/IEC 170259. 3.4 qual
42、ity management system management system to direct and control an organisation with regard to quality Note 1 to entry: Requirements for quality management systems are given in EN ISO 9001 2. 3.5 quality plan document setting out the specific quality practices, resources and sequence of activities rel
43、evant to a particular product or range of products 3.6 type testing TT testing performed to prove that the material, product, joint or assembly is capable of conforming to the requirements given in the relevant standard Note 1 to entry: The type test results remain valid until there is a change in t
44、he material or product or assembly provided that the process verification tests are done regularly. PD CEN/TS 1555-7:2013CEN/TS 1555-7:2013 (E) 8 3.7 batch release test BRT test performed by or on behalf of the manufacturer on a batch of compound or products, which needs to be satisfactorily complet
45、ed before the batch can be released 3.8 process verification test PVT test performed by or on behalf of the manufacturer on compound or products or joints or assemblies at specific intervals to confirm that type tests originally performed on the compound or products or joints or assemblies continue
46、to be valid and the process continues to be capable of producing products which conform to the requirements given in the relevant standard Note 1 to entry: Such tests are carried out as a measure of process control and are not related to release of batches of compound or products. 3.9 audit test AT
47、test performed by a test laboratory on behalf of an inspection body or certification body to confirm that the compound, product, joint or assembly continues to conform to the requirements given in the relevant standard and to provide information to assess the effectiveness of the quality management
48、system 3.10 indirect test IT test performed by or on behalf of the manufacturer, different from that specified test for that particular characteristic, having previously verified its correlation with the specified test 3.11 witness test WT test accepted by an inspection or a certification body for t
49、ype testing and/or audit testing, which is carried out by or on behalf of the manufacturer and supervised by a representative of the inspection or certification body, qualified in testing 3.12 material composition grouped by families, expressed by generic names, e.g. polypropylene, stainless steel, brass or EPDM Note 1 to entry: Definition from European Commission, Directorate-General for Enterprise and Industry, Sub-group on Product Testing Procedures (EC
