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Reference number ISO/FDIS 17484-1:2006(E) © ISO 2006 FINAL DRAFT ISO/TC 138/SC 4 Secretariat: NEN Voting begins on: 2006-06-21 Voting terminates on: 2006-08-21 INTERNATIONAL STANDARD ISO/FDIS 17484-1 Plastics piping systems — Multilayer pipe systems for indoor gas installations with a maximum operating pressure up to and including 5 bar (500 kPa) — Part 1: Specifications for systems Systèmes de canalisations en matières plastiques — Tubes multicouches et leurs assemblages pour une pression maximale de service inférieure ou égale à 5 bar (500 kPa) destinés à l'alimentation en gaz à l'intérieur des bâtiments — Partie 1: Spécifications pour les systèmes ISO/FDIS 17484-1:2006(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. 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ISO/FDIS 17484-1:2006(E) iv © ISO 2006 – All rights reserved Contents Page Foreword ............................................................................................................................................................ vi Introduction ...................................................................................................................................................... vii 1 Scope...................................................................................................................................................... 1 2 Normative references ........................................................................................................................... 2 3 Terms, definitions and symbols .......................................................................................................... 3 3.1 Structural definitions ............................................................................................................................ 3 3.2 Geometrical definitions ........................................................................................................................ 3 3.3 Definitions related to pressure ............................................................................................................ 4 3.4 Materials definitions ............................................................................................................................. 4 3.5 Definitions related to material characteristics ................................................................................... 5 3.6 Terms related to service conditions ................................................................................................... 5 4 Requirements for the system............................................................................................................... 6 4.1 Pressure drop........................................................................................................................................ 6 4.2 Bending .................................................................................................................................................. 6 4.3 Corrosive conditions ............................................................................................................................ 6 5 Pipes....................................................................................................................................................... 6 5.1 Material................................................................................................................................................... 6 5.2 General characteristics ........................................................................................................................ 7 5.3 Dimensions of pipes ............................................................................................................................. 7 5.4 Mechanical properties .......................................................................................................................... 8 5.5 Physical properties ............................................................................................................................... 9 6 Fittings ................................................................................................................................................. 10 6.1 General ................................................................................................................................................. 10 6.2 Materials............................................................................................................................................... 11 6.3 Dimensions .......................................................................................................................................... 11 6.4 Transition fittings................................................................................................................................ 11 6.5 Rubber rings........................................................................................................................................ 11 7 Fitness for purpose............................................................................................................................. 11 7.1 Diameter classes................................................................................................................................. 11 7.2 Relation between maximum operating pressure and qualification testpressure ....................... 11 7.3 Requirements ...................................................................................................................................... 12 8 Marking and documentation .............................................................................................................. 13 8.1 Legibility............................................................................................................................................... 13 8.2 Damage ................................................................................................................................................ 13 8.3 Minimum marking requirements........................................................................................................ 13 Annex A (normative) List of the reference product standards .................................................................... 15 Annex B (normative) Test for delamination and strength of the joint line ................................................. 16 Annex C (normative) Resistance to gas constituents .................................................................................. 18 Annex D (normative) Thermal durability of the outer layer of M-pipes....................................................... 19 Annex E (normative) Adhesion test................................................................................................................ 21 Annex F (normative) Odour permeability....................................................................................................... 22 Annex G (normative) Resistance to tensile load on joints........................................................................... 23 Annex H (normative) Crush test on joints ..................................................................................................... 25 ISO/FDIS 17484-1:2006(E) © ISO 2006 – All rights reserved v Annex I (normative) Impact resistance test on joints................................................................................... 27 Annex J (normative) Thermal cycling test on joints..................................................................................... 29 Annex K (normative) Repeated bending test ................................................................................................ 31 Bibliography ..................................................................................................................................................... 33 ISO/FDIS 17484-1:2006(E) vi © ISO 2006 – All rights reserved 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 2. The main task of technical committees is to prepare International Standards. 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. 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. ISO 17484-1 was prepared by Technical Committee ISO/TC 138, Plastics pipes, fittings and valves for the transport of fluids, Subcommittee SC 4, Plastics pipes and fittings for the supply of gaseous fuels. ISO 17484 consists of the following parts, under the general title Plastics piping systems — Multilayer pipe systems for indoor gas installations with a maximum operating pressure up to and including 5 bar (500 kPa) : Part 1: Specifications for systems A Part 2 dealing with the code of practice is planned. ISO/FDIS 17484-1:2006(E) © ISO 2006 – All rights reserved vii Introduction This part of ISO 17484 was developed in response to worldwide demand for minimum specification for multi- layered pipes for indoor gas applications. Multi-layered pipes are delivered generally as a complete system. Pipes, fittings, tools, etc., are not compatible with components of another brand, generally. An advantage is that all components are perfectly geared to one another, but for repairing, the lack of compatibility might be problematic in the future. Fire safety of systems Depending on the construction of the house, pipework layout and other local circumstances, it is possible that additional safety devices are required to fulfill the demands of fire safety. Safety aspects of the system will be described in the planned Part 2. Code of practice The planned second part of ISO 17484 will be the code of practice for installation. Recommendations on design, construction and protection in case of fire of the gas indoor installation are given in EN 1775). References to ISO/TC 138/SC5 work Test methods referred to in this part of ISO 17484 have been developed by SC 5 as far as possible. However, not all test methods needed are in the working programme of SC 5. These test methods are placed in Annexes B to K of this part of ISO 17484. It is planned that these tests will be developed as International Standards in the future. For multilayer pipe construction, consisting of a layer of a reference standard material, an adhesive and a non- stress-designed layer, procedure I and the relevant product standards are followed for all aspects, excluding the aspects of delamination and, if applicable, oxygen permeation. For example, layers can have the following purposes: ⎯ ability to withstand the pressure; ⎯ ability to realize interlayer adhesion; ⎯ ability to block or greatly diminish incoming UV and/or sunlight; ⎯ ability to mechanically protect the outside layer; ⎯ ability to control the longitudinal expansion; ⎯ ability to give the multilayer pipe a colour (inside layer or outside layer). Some characteristics can be combined in one layer. FINAL DRAFT INTERNATIONAL STANDARD ISO/FDIS 17484-1:2006(E) © ISO 2006 – All rights reserved 1 Plastics piping systems — Multilayer pipe systems for indoor gas installations with a maximum operating pressure up to and including 5 bar (500 kPa) — Part 1: Specifications for systems 1 Scope This part of ISO 17484 specifies the general requirements and the performance requirements for multilayer pipe systems based on pipes, fittings and their joints intended to be used for gas supply within buildings. PE-X and PE pipes composed of one stress-designed layer, adhesive and a barrier layer are also covered by this part of ISO 17484. This part of ISO 17484 gives guidance for the design of piping systems consisting of multilayer pipes based on thermoplastics, for which at least 60 % of the wall thickness is polymeric material. Polymeric materials intended for stress-designed layers and all inner layers are required to be polyethylene (PE) and/or crosslinked polyethylene (PE-X) in accordance with Annex A of this part of ISO 17484. The outer layer of a metal multilayer is required to be PE or PE-X. PE-RT is considered as PE but with specific properties concerning hoop-stress performance (see 5.4.2.). This part of ISO 17484 applies to systemsthat operate at temperatures of − 20 °C up to 60 °C. For the purpose of this part of ISO 17484, crosslinked polyethylene (PE-X) and adhesive layers are considered as thermoplastic materials. For sizes greater than 63 mm the requirements of ISO 18225 have to be fulfilled in addition. This part of ISO 17484 is applicable for piping systems used in buildings to supply gas with a maximum operating pressure up to and including 500 kPa (5 bar) 1). This standard applies to the following fuels: ⎯ Category D gaseous fuel: natural gas; see ISO 13623; ⎯ Category E gaseous fuel: LPG vapour, and natural gas or LPG vapour; see ISO 13623. 1) 1 bar = 0,1 MPa = 105 Pa; 1 MPa = 1 N/mm2 ISO/FDIS 17484-1:2006(E) 2 © ISO 2006 – All rights reserved 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 3:1973, Preferred numbers — Series of preferred numbers ISO 161-1, Thermoplastics pipes for the conveyance of fluids — Nominal outside diameters and nominal pressures — Part 1: Metric series ISO 497:1973, Guide to the choice of series of preferred numbers and of series containing more rounded values of preferred numbers ISO 1167 (all parts), Thermoplastics pipes, fittings and assemblies for the conveyance of fluids — Determination of the resistance to internal pressure ISO 3126, Plastics piping systems — Plastics components — Determination of dimensions ISO 3503, Assembled joints between fittings and polyethylene (PE) pressure pipes — Test of leakproofness under internal pressure when subjected to bending ISO 8085-3:2001, Polyethylene fittings for use with polyethylene pipes for the supply of gaseous fuels — Metric series — Specifications — Part 3: Electrofusion fittings ISO 9080, Plastics piping and ducting systems — Determination of the long-term hydrostatic strength of thermoplastics materials in pipe form by extrapolation ISO 10838 (all parts), Mechanical fittings for polyethylene piping systems for the supply of gaseous fuels ISO 11357-6, Plastics — Differential scanning calorimetry (DSC) — Part 6: Determination of oxidation induction time ISO 12162:1995, Thermoplastics materials for pipes and fittings for pressure applications — Classification and designation — Overall service (design) coefficient ISO 13480, Polyethylene pipes — Resistance to slow crack growth — Cone test method ISO 13623:2000, Petroleum and natural gas industries — Pipeline transportation systems ISO 14531-1, Plastics pipes and fittings — Crosslinked polyethylene (PE-X) pipe systems for the conveyance of gaseous fuels — Metric series — Specifications — Part 1: Pipes ISO 17454:2006, Plastics piping systems — Multilayer pipes — Test method for the adhesion of the different layers using a pulling rig ISO 17456:—, Plastics piping systems — Multilayer pipes — Determination of long-term strength ISO 18225, Plastic piping systems — Multilayer piping systems for outdoor gas installations — Specifications for systems EN 713, Plastics piping systems — Mechanical joints between fittings and polyolefin pressure pipes — Test method for leaktightness under internal pressure of assemblies subjected to bending EN 1555-3, Plastics piping systems for the supply of gaseous fuels — Polyethylene(PE) — Part 3: Fittings ISO/FDIS 17484-1:2006(E) © ISO 2006 – All rights reserved 3 3 Terms, definitions and symbols For the purposes of this document, the following terms, definitions and symbols apply. 3.1 Structural definitions 3.1.1 construction group A group composed of multilayer pipes in which all the layers considered to be designed for stress bearing are made of polymeric materials selected from the list of reference product standards (see Annex A) 3.1.2 construction group B group composed of multilayer pipes in which all the layers considered to be designed for stress bearing are made of polymeric materials selected from the list of reference product standards (see Annex A) and including a stress bearing metallic layer 3.1.3 multilayer pipe pipe comprising of several stress-designed layers 3.1.4 multilayer M-pipe multilayer pipe comprising of polymers and one metallic layer of which thickness of the pipe consists of at least 60 % of polymer layers 3.1.5 multilayer P-pipe pipe comprised of more than one stress-designed polymeric layer (e.g. PE/PE-X) 3.1.6 layer homogeneous circumferential section of pipe wall that has chemical and/or mechanical and/or physical characteristics different from those of its immediate neighbours 3.1.7 inner layer layer in contact with the conveyed fluid 3.1.8 outer layer layer exposed to the external environment 3.2 Geometrical definitions 3.2.1 nominal diameter dn specified diameter, assigned to a nominal size (DN/OD or DN/ID) NOTE The nominal diameter is expressed in units of millimetres. 3.2.2 outside diameter de diameter, measured through its cross section at any point of a pipe or the fitting end of a fitting, rounded to the next greater 0,1 mm ISO/FDIS 17484-1:2006(E) 4 © ISO 2006 – All rights reserved 3.2.3 mean outside diameter measured length of the outer circumference of the pipe divided by π, rounded up to the nearest 0,1 mm NOTE The value for π is taken to be 3,142. 3.2.4 inside diameter value of the measurement of the diameter through its cross section at any point of a pipe, rounded to the next greater 0,1 mm 3.2.5 SDRm metal layer standard dimension ratio, the nominal outside diameter (DN or OD) divided by the nominal wall thickness of the metal layer 3.2.6 wall thickness difference between the pipe outside diameter used for joining and the pipe bore divided by 2 3.2.7 nominal wall thickness en wall thickness, corresponding to the minimum wall thickness at any point NOTE The nominal wall thickness is expressed in units of millimetres. 3.2.8 mean wall thickness em arithmetic mean of at least four measurements regularly spaced around the same cross-sectional plane of the pipe, including the measured minimum and maximum values obtained, rounded up to the nearest 0,1 mm 3.3 Definitions related to pressure 3.3.1 design pressure pD highest pressure related to the circumstances for which the system has been designed and intended to be used 3.3.2 predicted design pressure pCD pressure that represents the predicted design pressure after a lifetime of 50 years, using the 97,5 % reference line NOTE The predicted design pressure is expressed in units of kilopascals (bars). 3.4 Materials definitions 3.4.1 virgin material material in a form such as granules or powder that has not been subjected to use or processing other than that required for its manufacture and to which no reprocessable or recyclable material has been added ISO/FDIS 17484-1:2006(E) © ISO 2006 – All rights reserved 5 3.4.2 own reprocessable material material prepared from rejected unused pipes and fittings, including trimmings from the production of pipes and fittings that can be reprocessed in a manufacturer’s plant after having been previously processed by the same manufacturer by a process such as moulding or extrusion and for which the complete formulation is known 3.4.3 reference product standard International Standard or draft International Standard prepared by Technical Committee ISO/TC 138/SC 4, applicable for non-multilayer pipes, to which this part of ISO 17484 can refer for clauses related to the materials, components (e.g. fittings), and fitness forpurpose of the system 3.4.4 stress-designed layer plastics materials used for layers intended to be stress bearing shall be restricted to the reference material standards 3.5 Definitions related to material characteristics 3.5.1 long-term hydrostatic strength long-term pressure strength quantity with the dimensions of stress, which represents the predicted mean strength at a temperature T and a time t NOTE The long-term hydrostatic strength is expressed in units of megapascals. 3.5.2 PLPL lower confidence limit of the predicted hydrostatic pressure, which represents the 97,5 % (one-sided) lower confidence limit of the predicted hydrostatic pressure at a temperature T and a time t NOTE The lower confidence limit of the predicted hydrostatic pressure is expressed in units of kilopascals (bars). 3.5.3 MRP minimum required pressure, equal to the estimated long-term pressure resistance of a pipe at a temperature of 20 °C and a time 50 years, rounded to the nearest lower value of the R10 series of ISO 3:1973 and ISO 497:1973 3.5.4 overall service (design) coefficient C factor overall coefficient with a value greater than 1, which takes into consideration service conditions as well as properties of the components of a piping system other than those represented in the lower confidence limit NOTE The minimum value of C for various materials is given in 5.2.3. 3.6 Terms related to service conditions 3.6.1 gaseous fuel any fuel which is in the gaseous state at a temperature of 15 °C and a pressure of 100 kPa (1 bar) ISO/FDIS 17484-1:2006(E) 6 © ISO 2006 – All rights reserved 3.6.2 category D gaseous fuels natural gas NOTE Categories of gaseous fuels and liquid fuel are defined in detail in ISO 13623:2000. 3.6.3 category E gaseous fuels LPG vapour NOTE Categories of gaseous fuels and liquid fuel are defined in detail in ISO 13623:2000. 3.6.4 maximum operating pressure MOP maximum pressure at which a system can be operated continuously under normal conditions 4 Requirements for the system 4.1 Pressure drop The manufacturer shall provide information on the pressure drop in the system. 4.2 Bending Special attention shall be paid to the pressure drop of bends. Bending properties of the pipe shall be stated by the manufacturer. 4.3 Corrosive conditions Components exposed to corrosive conditions shall be manufactured from a corrosion-resistant material or protected against corrosion. 5 Pipes 5.1 Material 5.1.1 General All stress-designed and polymeric inner layers shall be composed of reference materials in accordance with the reference product standards specified in Annex A. It is not necessary for the outer layer to be made of a reference material. Materials intended for the stress-bearing layers shall conform to the material requirements of the reference product standard(s) specified in Annex A. The pipe manufacturer shall declare the reference material standard applicable to his product, as listed in Annex A. 5.1.2 Reprocessable materials Clean own reprocessable material (except PE-X) of the same polymer type from products manufactured to the reference product standard may be added to the virgin material. ISO/FDIS 17484-1:2006(E) © ISO 2006 – All rights reserved 7 5.1.3 Metallic materials Aluminium materials used shall be in accordance with EN 573-3. 5.1.4 Product classification and construction group Multilayer pipes may include polymeric or metallic layers that have several purposes, including the ability to withstand the pressure. For the purpose of this part of ISO 17484, multilayer pipes are classified in two groups: construction group A and construction group B as defined in 3.1. For these definitions, adhesives are not considered as stress- bearing layers. The pipe manufacturer shall declare the construction group of the multilayer pipe. 5.2 General characteristics 5.2.1 General When viewed without magnification, the internal and external surfaces of pipes shall be smooth, clean and free from scoring, cavities and other surface defects to an extent that would prevent conformance with this part of ISO 17484. The ends of the pipe shall be cut cleanly and square to the axis of the pipe. The following information shall be provided: ⎯ outside diameter; ⎯ wall thickness; ⎯ thickness of the inner layer; ⎯ thickness of the metal layer; ⎯ thickness of the outer layer; ⎯ tolerances. Dimensions shall be measured in accordance with ISO 3126. 5.2.2 Multilayer pipe construction The joint line of the metallic layer shall be continuously welded. 5.2.3 Minimum overall service (design) coefficient The minimum overall service (design) coefficient (C factor) is 2, as used to calculate the design pressure, pD, taking into account the maximum operating temperature. 5.3 Dimensions of pipes The outside diameter shall be accordance with ISO 161-1. All layers shall be of sufficient thickness so that the composite pipe fulfills the requirements of this part of ISO 17484. ISO/FDIS 17484-1:2006(E) 8 © ISO 2006 – All rights reserved 5.4 Mechanical properties 5.4.1 Long-term pressure strength 5.4.1.1 General The long-term pressure strength of the multilayer pipes shall be measured or calculated, as applicable. Consequently, two procedures for the determination of long-term pressure strength of multilayer pipes are defined in this part of ISO 17484: procedure I and procedure II. Requirement for the predicted design pressure: PCD shall be equal to or greater than the relevant MOP. The operating temperature shall be taken into account. The viscoelastic behaviour of PE-X and PE are similar; therefore, procedure I may be applied to P-pipes using layers of both materials. It shall be taken into account that the results of procedure I are generally rather conservative. Reference lines for PE-X can be found in ISO 10146. NOTE The minimum overall service (design) coefficients for each material can be found in the relevant product standard (see Annex A). 5.4.1.2 Procedure I — Calculation method This method shall only be used for P-pipes. The long-term pressure strength shall be calculated using the reference lines of each individual pressure- bearing polymer layer according to of ISO 17456:—, Annex A. The addition rule related to each pressure- bearing layer assumes similar elastic behaviour of each material used and that complete interlayer adhesion exists, with design coefficients coming from the reference product standards. The cumulative PD shall be equal to or greater than the relevant MOP. For details of confirmation testing, see 5.4.1.4. 5.4.1.3 Procedure II — Testing method This method can be used for both multilayer P- and multilayer M-pipes. At least one diameter of every “similar construction type” shall be tested in accordance with ISO 9080. For M- pipes, the diameter with the highest SDRm of the metal layer shall be tested. The parameters pCD and MRP for each pipe construction shall be determined in accordance with ISO 17456. For the determination of multilayer M-pipes, the design coefficient of the inner layer shall be used. For multilayer P-pipes, the design coefficients of each layer shall be taken in account (see Annex A). NOTE To determine the weakest diameter within a construction group, a burst test on each diameter can be performed. 5.4.1.4 Pressure strength of all diameters All diameters of the similar construction type, excluding the diameter tested in accordance with 5.4.1.3, shall undergo the confirmation testing in accordance with ISO 17456. If the SDRm for a metal layer having a diameter smaller than the completed tested diameter is less then 90 % of the SDRm of the completed tested diameter,the smaller diameter may be tested in accordance with the confirmation testing of ISO 17456. ISO/FDIS 17484-1:2006(E) © ISO 2006 – All rights reserved 9 5.4.1.5 Calculation of the control points 5.4.1.5.1 Procedure I for P-pipes Failure control points for each diameter for 22 h, 165 h and 1 000 h shall be calculated using Equation (A.2) of ISO 17456:—. 5.4.1.5.2 Procedure II for P-pipes and M-pipes Failure control points for each diameter for 22 h, 165 h and 1 000 h (or other requested testing time) shall be calculated using the 95 % value of the PLPL line of the fully tested diameter. 5.4.2 Strength of the joint line of M-pipe When the outside diameter of the pipe is increased by 10 %, no failures relative to the joint line of the metal layer shall occur. The test shall be carried out in accordance with Annex B. 5.4.3 Resistance to slow crack growth of the outer layer (cone test) for M-pipes When tested in accordance with ISO 13480, the crack growth rate of the outer layer shall be less than 10 mm/day. The test shall be carried out on pipe produced from material used for the outer layer. 5.5 Physical properties 5.5.1 General The applicable physical characteristics of each stress-designed and inner layer shall be checked in accordance with the corresponding clause of the reference product standard. 5.5.2 Additional requirements The requirements for the physical properties are listed in Table 1. ISO/FDIS 17484-1:2006(E) 10 © ISO 2006 – All rights reserved Table 1 — Physical properties Tests Characteristic Requirements Parameter Value Reference Conditioning 1 500 h/23 °C Temperature 80 °C Pressure 0,4 pD Resistance to gas constituents W 20 h No delamination Cone test 10 % expansion Annex C PE or PE-X At 100° or 0,5 year at 110°C 0,25 year Thermal durability of the outer layer of M-pipes No visual cracks in outer layer Strain 3 % Annex D Oxidation induction time (OIT) W 20 min Temperature 200 °Ca ISO 11357-6 Expansion 10 % (by cone with 15 % slope) Delamination: P-pipes No cracks or delamination Temperature 23 °C Annex B Temperature 23 °C Cycling test − 20 °C/+ 60 °C Delamination: M-pipes Peel strength W 15 N/cm Number of cycles 10 Annex E Odorant permeability No perception of THT smell by experienced observer Odorant Exposure time Temperature THT 60 days 23 °C Annex F a Test may be carried out at 210 °C providing that there is clear correlation with the results at 200 °C. In case of dispute, the reference temperature shall be 200 °C. 6 Fittings 6.1 General 6.1.1 Fitting reference standards Fittings shall comply with the performance requirements the following International Standards: ⎯ mechanical fittings: ISO 10838 (all parts); ⎯ electrofusion fittings: ISO 8085-3; ⎯ PE-X electrofusion fittings: ISO 14531-2; ⎯ mechanical fittings for PE-X: ISO 14531-3. 6.1.2 Installation During installation of the fitting on the pipe, the aluminium layer, and in particular the welded seam, shall not be torn. Tools and aids used for installation of the fitting shall not damage the pipe or fitting. ISO/FDIS 17484-1:2006(E) © ISO 2006 – All rights reserved 11 6.2 Materials The materials from which the fitting components are made shall be such that the level of performance of these components shall at least be equal to that specified for the multilayer pipe connected to the fitting. ISO 10838 (all parts) shall be used as a reference for fitting materials. Materials in contact with the multilayer pipe shall not prevent the pipe from conforming to this specification. 6.3 Dimensions The values of the nominal inside diameter and the value of the nominal wall thickness and tolerances shall be provided by the supplier. The tolerances on these values shall also be supplied. 6.4 Transition fittings The manufacturer shall provide a transition fitting intended to be connected to a standardized system. The connection shall comply with the relevant standards, e.g. ISO 7-1. 6.5 Rubber rings The technical file shall indicate which rubber standard has been applied. 7 Fitness for purpose 7.1 Diameter classes The following diameter classes are defined based on ranges of the external diameter. Table 2 — Diameter classes Diameter class 1 2 3 4 5 6 7 External diameter (mm) de < 16 16 u de < 20 20 u de < 26 26 u de < 40 40 u de < 50 50 u de < 60 60 u D u 63 7.2 Relation between maximum operating pressure and qualification test pressure The relationship between maximum operating pressure (MOP) and qualification test pressure (QTP) is given in Table 3. Table 3 — Relation between MOP and QTP MOP QTP kPa mbar kPa mbar 10 100 100 1 000 100 1 000 300 3 000 500 5 000 700 7 000 ISO/FDIS 17484-1:2006(E) 12 © ISO 2006 – All rights reserved 7.3 Requirements The requirements for fitness of purpose of joint assemblies are listed in Table 4. Table 4 — Requirement for fitness purpose of joint assemblies Tests Characteristic Requirements Parameter Value Reference Test temperature 23 ± 2 °C Type of test samples End fitting – pipe – end fitting Pipe length 350 mm Number of test samples 2 per diameter class Test pressure 3 kPa (30 mbar) Strength kN Class 1 h test 800 h test Tensile load No leakage for one hour Tensile strength level 1 2 3 4 5 6 7 1,4 1,8 2,1 4,0 6,0 8,0 12,0 0,9 1,1 1,4 2,4 3,6 4,8 7,2 Annex G Test temperature 23 ± 2 °C Type of test samples End fitting – pipe – end fitting Pipe length 600 mm Number of test samples 2 per diameter class Test pressure 3 kPa (30 mbar) Force level 2 kN Position of load applied 10 mm from the insert of fitting or nut Joint resistance to crushing Tightness No reduction of outer diameter more than 20 % Load Plate with 150 mm side square Annex H Test temperature 23 ± 2 °C Type of test samples End fitting – pipe – coupling – pipe – end fitting with each end fitting fixed on a motionless support Pipe length 1 000 mm each pipe Number of test samples 2 per diameter class Test pressure 3 kPa (30 mbar) Striker Spherical head with 1 cm of radius Impact 600 mm/5 kg Impact resistance of the joint Tightness Position of the impact Onto the fitting Annex I ISO/FDIS 17484-1:2006(E) © ISO 2006 – All rights reserved 13 Table 4 (continued) Tests Characteristic Requirements Parameter Value Reference Extreme test temperatures − 20 °C/+ 60 °C Number of cycles 10 Type of test samples End fitting – pipe – coupling – pipe – end fitting Pipe length 300 mm each pipe Number of test samples 2 per diameter class Thermal cycling resistance Leakage u 10−4 atm·cm3·s−1 Test pressure QTP according to MOP Annex J Minimum bend radius As declared by the manufacturer Bend angle 90° Number of bending cycles 3 bend cycles Test pressure 3 kPa (30 mbar) Type of test samples End fitting – pipe – end fitting Pipe length 350 mm Position of the bend At a distance equal to one minimum bend radius from the end fitting Repeated bending resistance No damage or modification of the aluminium layer after the test Number of test samples 4 per diameter class Annex K 8 Marking and documentation 8.1 Legibility Marking details shall be legible without magnification. Legibility shall be maintained during storage, handling, installation and use. 8.2 Damage Marking shall not initiate cracks or other types of failure in the product. 8.3 Minimum markingrequirements Marking details shall be in a colour that differs from that of the external pipe surface. The marking frequency shall be at intervals not greater than 1 m. Coils shall be sequentially marked with the length in metres that indicate the length remaining on the coil. The marking shall include the information specified in Table 5. ISO/FDIS 17484-1:2006(E) 14 © ISO 2006 – All rights reserved Table 5 — Minimum marking information Aspect Mark or symbol Manufacturer or trademark Name or symbol Internal fluid Gas Design pressure In accordance with national regulations Dimensions dn × en Material designation: Layer construction and type of material required; description from outside to inside e.g. PE-X-Al-PEX or PE80-PEX Production period (date/code) Manufacturer’s own reference Standard reference number ISO 17484 8.3.1 Additional Instructions The manufacturer shall provide clear assembly instructions that contain at least the following information: ⎯ instructions that pipe and fitting(s) belong together and are not interchangeable with other products; ⎯ statement if a coupler is fit for repeated assembly; ⎯ if the manufacturer allows the use of a standard bending tool, a statement in the manufacturer’s instructions that damage of the external coating shall be avoided if bending the pipe; ⎯ information on gaseous flow rate/pressure drop relationship (reference EN 12117); ⎯ minimum bending radius; ⎯ bending tools to be used; ⎯ if a calibration tool is necessary to insert a stiffener, the manufacturer instructions shall be given. ISO/FDIS 17484-1:2006(E) © ISO 2006 – All rights reserved 15 Annex A (normative) List of the reference product standards As of the date of publication of this part of ISO 17484, the reference product standards published or under preparation are listed in Table A.1. Table A.1 — List of reference product standards Reference material Reference material standard PE ISO 4437 PE-X ISO 14531-1: and ISO 10146 PE-RT ISO 4437 and ISO 24033 NOTE This list is only applicable for materials in stress-bearing layers. ISO/FDIS 17484-1:2006(E) 16 © ISO 2006 – All rights reserved Annex B (normative) Test for delamination and strength of the joint line B.1 Principle Pipe samples are subjected to a cone test in order to determine delamination and strength of the joint line of the pipe sample. With a specially shaped cone, a defined expansion of the pipe is created. B.2 Pipe sample The test shall be carried out on a pipe sample with a length of at least 5 × de. B.3 Cone A cone with a pitch of 15° shall be applied. The length of the cone shall be such that an expansion of the pipe of 10 % can be obtained. B.4 Procedure The test is conducted as follows. ⎯ Measure the real mean outside diameter of the pipe sample using suitable equipment with an accuracy of at least 0,1 %. ⎯ Multiply this value by 1,1 (10 % expansion); This value is the outside diameter of the expanded part of the pipe sample. ⎯ Measure the wall thickness in accordance to ISO 3126 of the pipe sample at eight separate points equally divided over the pipe diameter with an apparatus having an accuracy of at least 1 %. The calculated value is em. ⎯ Calculate dcone, the required size of the cone diameter in order to obtain an expansion of 10 %, using Equation (B.1): dcone = 1,1de − (2em) (B.1) ⎯ Mark the place on the cones where a 10 % expansion is expected. ⎯ Insert the cone in the pipe sample up to the mark sign. The pipe end has been expanded now by 10 %. ⎯ Remove the cone. ⎯ Wait 15 min after the removal of the cone and visually check the sample for cracks and delamination. ISO/FDIS 17484-1:2006(E) © ISO 2006 – All rights reserved 17 B.5 Test report The test report shall include the following: ⎯ number, type and nominal dimension of the sample; ⎯ test temperature; ⎯ cone dimensions; ⎯ duration of the test; ⎯ any observation made during and after the test; ⎯ any event able to influence the test results. ISO/FDIS 17484-1:2006(E) 18 © ISO 2006 – All rights reserved Annex C (normative) Resistance to gas constituents C.1 Principle Samples of pipe/fitting assemblies are filled with a liquid containing 50 % n-decane and 50 % 1,3,5- trimethylbenzene under pressure for a specified period. After this conditioning period, a cone test is carried out on the pipe in order to determine the grade of delamination. C.2 Sample Prepare a sample in accordance with ISO 1167. The test sample should preferably be made of a pipe from dimension Class 6 (see 7.1). The end caps shall be mounted in such a way that the condensate has free access to the pipe ends. C.3 Procedure The test is conducted as follows. ⎯ Prepare a synthetic condensate consisting of a mixture of a mass fraction of 50 % n-decane (99 %) and a mass fraction of 50 % 1,3,5-trimethylbenzene. ⎯ Condition the pipe by filling it with condensate and allowing it to stand in air for 1 500 h at (23 ± 2) °C with a pressure of 0,4 pD. ⎯ After the above procedure, test in accordance with Annex B, taking into account the dimensions of the pipe after conditioning. ⎯ Check the sample for leakage and for delamination of the layers. C.4 Test report The test report shall include the following: ⎯ number, type and nominal dimension of the sample; ⎯ test temperature; ⎯ duration of the test; ⎯ any observation made during and after the test; ⎯ any event able to influence the test results. ISO/FDIS 17484-1:2006(E) © ISO 2006 – All rights reserved 19 Annex D (normative) Thermal durability of the outer layer of M-pipes D.1 Principle A pipe sample of the M-pipe is stored in an oven for a defined time at an elevated temperature. After this oven aging, the test piece is bent to produce a required axial strain in the outside layer. The layer is observed visually for cracks. D.2 Apparatus D.2.1 Oven. D.2.2 Bending template, such as that described in EN 713. D.3 Procedure The test is conducted as follows. ⎯ Age the PE , PE-X or PE-RT in an oven for 0,5 years at 100 °C or 0,25 years at 110 °C 2). NOTE This assumes a duration of 25 years at 60 °C during the 50-year lifetime of the pipe. Taken into account is the time/temperature extrapolation method of ISO 9080, which gives a test time of 0,5 years (6 months) at 100 °C or 0,25 years (3 months) at 110 °C. ⎯ Deform the test piece by bending with bending template at (23 ± 2) °C for a duration ranging from a minimum of 3 s to a maximum of 10 s (for complete deformation). Table D.1 — Parameters Total pipe length l1 Bending length l2 Bending radius R 10de 7,5de 16de de is the outside diameter of the pipe. A strain of 3 % is required, equivalent to a bending radius of 16de. 2) These oven aging times and temperatures are based on temperature profiles. The temperature variation is assumed as follows: ⎯ 120 h at 70 °C per year ⎯ 3 months at 60 °C ⎯ 3 months at 50 °C ⎯ 3 months at 40 °C ⎯ 3 months at 30 °C ISO/FDIS 17484-1:2006(E) 20 © ISO 2006 – All rights reserved EXAMPLE Calculation of the relationship between bending radius and strain. For a pipe with 32 mm outside diameter, the required bending template radius is calculated as follows: R = 16 × de = 16 × 32 mm = 512 mm Strain of the outer fibre in relation to the neutral axis of the pipe is calculated as follows: ε = (R + de)/(R + de/2) − 1 = (17 × de/16,5 × de) − 1 = 0,030 3 = 3,0 %. D.4 Test report The test report shall include the following: ⎯ number, type and nominal dimension of the sample;⎯ presence of cracks; ⎯ duration of the test; ⎯ any observation made during and after the test; ⎯ any event able to influence the test results. ISO/FDIS 17484-1:2006(E) © ISO 2006 – All rights reserved 21 Annex E (normative) Adhesion test E.1 Principle Adhesion strength should be determined by a peel test according to ISO 17454 that is carried out before and after thermal cycling. E.2 Sample Samples for peel test and for thermal cycling shall be prepared in accordance with ISO 17454 and with this part of ISO 17484:2006, Annex J, respectively. All samples shall be prepared from the same pipe. E.3 Procedure The test is conducted as follows. ⎯ Carry out a peel test according to ISO 17454 at (23 ± 2) °C. ⎯ Carry out a thermal cycle test according to Annex J, with a thermal cycle between − 20 °C and + 60 °C. The number of cycles is 10. The pipe is to be pressurized. ⎯ After the thermal cycling, a test sample shall be prepared for the peel test according to ISO 17454. ⎯ Carry out a peel test according to ISO 17454 at (23 ± 2) °C. The peeling zones should be at the ends and centre of the test piece. E.4 Test report The test report shall include the following: ⎯ peel strength, expressed in newtons per centimetre; ⎯ name of the test; ⎯ number, type and nominal dimension of the sample; ⎯ nest temperature. ISO/FDIS 17484-1:2006(E) 22 © ISO 2006 – All rights reserved Annex F (normative) Odour permeability F.1 Principle A flow with a defined concentration of THT is conveyed through a pipe sample. After a defined period, the THT permeability through the pipe wall will be detected by an experienced person. NOTE THT is an odorant that is added to the gas for safety reasons. (A customer can detect small gas leakages by smelling). THT is the most common type of odorant. F.2 Samples Each end of a pipe is fitted with a valve. The length of the pipe is such that the distance between the valves is 250 mm. F.3 Procedure The test is conducted as follows. ⎯ An air flow with a THT concentration of 100 mg/m3 at a pressure of 0,1 ± 0,02 MPa (1 ± 0,2 bar) is passed through the pipe at a temperature of (23 ± 2) °C. ⎯ After 60 days of exposure an experienced observer has to detect the presence THT odour. F.4 Test report The test report shall include the following: ⎯ detection of THT odor; ⎯ delamination and leakage; ⎯ number, type and nominal dimension of the sample; ⎯ test temperature; ⎯ duration of the test; ⎯ any observation made during and after the test; ⎯ any event able to influence the test results. ISO/FDIS 17484-1:2006(E) © ISO 2006 – All rights reserved 23 Annex G (normative) Resistance to tensile load on joints G.1 Principle Samples of pipe/fitting joint are subjected to a tensile load force in order to establish the short- and long-term resistance to tensile loads. G.2 Samples A sample consists of a pipe with two end fittings. One fitting shall have a possibility to establish a pressure connection. The free length of pipe between the end fittings is 350 mm. G.3 Procedure G.3.1 Short-term (1 h) test The test is conducted as follows. ⎯ Carry out testing at an ambient temperature of (23 ± 2) °C. ⎯ Put the test sample in the tensile testing machine. ⎯ Apply 3 kPa (30 mbar), check it and maintain it up to the completion of the test. ⎯ Raise the tensile load until the specified value has been attained as given as test parameters in 7.3 in such a way that the test piece is pulled at a speed of 0,1 ± 0,05 l/min where l is 350 mm. ⎯ keep the tensile load constant for 1 h while monitoring the pressure. G.3.2 Long-term (800 h) test The test is conducted as follows. ⎯ Carry out testing at an ambient temperature of (23 ± 2) °C. ⎯ Put the test sample in a constant load apparatus. ⎯ Apply the load as given in 7.3. ⎯ Keep the tensile load constant for 800 h while monitoring the pressure. ⎯ For the short-term test, pressure inside the samples is monitored and any leakage should be recorded (location, time of appearance). ⎯ For the long-term test, pressurize the sample after test period with a pressure of 3 kPa (30 mbar). Check the sample for leakage. ISO/FDIS 17484-1:2006(E) 24 © ISO 2006 – All rights reserved G.4 Test report The test report shall include the following: ⎯ type of the sample; ⎯ air pressure (initial pressure, pressure vs. time plotting); ⎯ any leakage occurring during the phase (time of occurrence, strain/strength at the moment of the leak, failure description); ⎯ any problem during the test able to influence the result of the test. ISO/FDIS 17484-1:2006(E) © ISO 2006 – All rights reserved 25 Annex H (normative) Crush test on joints H.1 Principle Pipe crushing in the vicinity of a pipe joint is considered as critical. In order to determine the resistance to crushing, a pipe sample is crushed very close to a pipe joint. After the test a tightness test will be carried out. H.2 Samples The test sample is made of an end-fitting pipe-end fitting and the joints are made in accordance with the manufacturer's instructions. The pipe length is 600 mm. H.3 Procedure The test is conducted as follows. ⎯ Perform a tightness test at 3 kPa (30 mbar). ⎯ Apply a load on a plate (a square with 150-mm sides) positioned close to the fitting (10 mm from the insert of the fitting or nut) to obtain a force level of 2 kN (see Figure 1). This can be achieved in a tensile testing machine. Alternatively, it can be a square with 75-mm sides and a force level of 1 kN. Dimensions in millimetres Figure H.1 — Resistance to crushing close to a fitting test assembly ⎯ Wait for the strain to be constant. ⎯ Check the tightness. ⎯ Perform a visual observation. ⎯ Measure the pipe diameter and calculate the remaining deformation. ⎯ Control the test sample on tightness by applying a test pressure of 10 kPa (100 mbar). ISO/FDIS 17484-1:2006(E) 26 © ISO 2006 – All rights reserved H.4 Test report The test report shall include the following: ⎯ number, type and nominal dimension of the sample; ⎯ test temperature; ⎯ crushing force; ⎯ duration of the test; ⎯ any observation made during and after the test; ⎯ any event able to influence the test results. ISO/FDIS 17484-1:2006(E) © ISO 2006 – All rights reserved 27 Annex I (normative) Impact resistance test on joints I.1 Principle The impact-resistance of joints is determined by the impact of a falling striker of defined dimensions and mass dropped from a defined height. I.2 Pipe samples The test sample is made of an end-fitting pipe-coupling pipe-end fitting and the joints are made in accordance with the manufacturer instructions. Each pipe length is 1 000 mm. I.3 Shape and mass of striker The striker shall have a spherical head with a radius of 10 mm and a mass of 5 kg (see Figure I.1). Dimensions in millimetres Figure I.1 — Impact resistance test assembly a Impact. ISO/FDIS 17484-1:2006(E) 28 © ISO 2006 – All rights reserved I.4 Procedure The test is conducted as follows. ⎯ Each end fitting is fixed on a motionless support. ⎯ Perform a tightness test at 100 kPa (1 bar). ⎯ Drop a striker from a height of 600 mm on the pipe close to the fitting (10 mm from the insert of the fitting or the nut). ⎯ Perform a tightness test at 100 kPa (1 bar). ⎯ Check the sample for leakage by means of a foaming solution. I.5 Test report The test report shall include the following: ⎯ leakage; ⎯ name of the test; ⎯ number, type and nominal dimension of the sample; ⎯ test temperature. ISO/FDIS 17484-1:2006(E) © ISO 2006 – All rightsreserved 29 Annex J (normative) Thermal cycling test on joints J.1 Principle To establish the negative influence of cycles of low and high temperatures, a sample of a pipe with fittings will be subjected to a number of thermal cycles. The sample will be pressurized. The leak rate is determined by measuring the volume of the sample and by measuring the pressure before and after the test. J.2 Samples A sample consists of the combination of an end fitting-pipe-coupling-pipe-end fitting. J.3 Procedure The test is conducted as follows. ⎯ Fill up the samples with water and measure the water volume; empty the sample. ⎯ Pressurize the sample under the specified QTP air pressure, close it off so that the pressure level is maintained at the right level. ⎯ Place the samples in an appropriate oven and apply the following cycle N = 10 times while monitoring the pressure inside the sample and reporting any leakage appearing. ⎯ Measure the pressure at ambient temperature after the N cycles are completed; the expansion of the pipe shall be taken into account. ⎯ Calculate the total leak rate with the following equation: i f l ( )P P V Q t −= where lQ mean leak rate, expressed in bar cubic centimetres per second (atmosphere cubic centimetres per second); Pf absolute final pressure in the sample, expressed in bars (atmospheres); Pi absolute initial pressure in the sample, expressed in bars (atmospheres); V sample volume, expressed in cubic centimetres; t test duration, expressed in seconds. ISO/FDIS 17484-1:2006(E) 30 © ISO 2006 – All rights reserved Dimensions in millimetres Key 1 1 cycle a Rate of temperature rise is 1°C/min. Figure J.1 — Heat cycle layout J.4 Test report The test report shall include the following: ⎯ type of sample, DN and volume; ⎯ type of test; ⎯ air pressure (initial pressure, pressure vs. time plotting or final pressure if not possible). ISO/FDIS 17484-1:2006(E) © ISO 2006 – All rights reserved 31 Annex K (normative) Repeated bending test K.1 Principle Using a special dimensioned mandrel, the resistance to repeat bending is determined of samples from pipe fitting assemblies. After the bending procedure the leak tightness is determined. K.2 Samples The test sample is made of an end fitting-pipe-end fitting under a 3 kPa (30 mbar) test pressure. One extremity is fixed, the other is free. K.3 Special tools A special tool (spring, bending tool) should be used if required by the manufacturer. If not, the samples are bent by hand. K.4 Procedure The test is conducted as follows. a) The test sample should be put between two mandrels as shown in Figure K.1. b) The mandrel radius is the minimum bend radius, i.e., the pipe radius where the minimum bend radius is declared by the manufacturer. The welded seam is on the inside of the bend. c) Bend the pipe from position A to position B. The time between positions A and B should be around 10 s. Wait half a minute. d) Put the pipe back into the position A. e) Repeat steps c) and d) 2 times. f) Check during the test if disbonding of the layer has occurred. g) Peel off the outer layer of the pipe and watch for any damage to or modification of the aluminium layer. The pipe may be bent in different positions during examination if this can improve the damage detection. Inspect visually for any delamination or disbonding, such as blisters, pitting and notches. ISO/FDIS 17484-1:2006(E) 32 © ISO 2006 – All rights reserved Key A unbent position B bent position 1 pipe longitudinal axis 2 air source; pressure sensor plug 3 end fittings 4 mandrels R bend radius D 1 minimum bend radius Figure K.1 — Multilayer repeated bending test assembly K.5 Test report The test report shall include the following: ⎯ type of sample; ⎯ air pressure (initial pressure, pressure vs. time plotting); ⎯ any leakage occurring during the test (time of occurrence, number of bends done, location); ⎯ any event during the test which could influence the result of the test. ISO/FDIS 17484-1:2006(E) © ISO 2006 – All rights reserved 33 Bibliography [1] ISO 7-1, Pipe threads where pressure-tight joints are made on the threads — Part 1: Dimensions, tolerances and designation [2] EN 1775, Gas supply — Gas pipework for buildings — Maximum operating pressure u 5 bar — Functional recommendations [3] ISO 4437, Buried polyethylene (PE) pipes for the supply of gaseous fuels — Metric series — Specifications [4] ISO 6447, Rubber seals — Joint rings used for gas supply pipes and fittings — Specification for material [5] ISO 6957, Copper alloys — Ammonia test for stress corrosion resistance [6] ISO 10146, Crosslinked polyethylene (PE-X) pipes — Effect of time and temperature on the expected strength [7] ISO 10147, Pipes and fittings made of crosslinked polyethylene (PE-X) — Estimation of the degree of crosslinking by determination of the gel content [8] ISO/TR 10837, Determination of the thermal stability of polyethylene (PE) for use in gas pipes and fittings [9] ISO 10508, Plastics piping systems for hot and cold water installations — Guidance for classification and design [10] ISO/TS 10839, Polyethylene pipes and fittings for the supply of gaseous fuels — Code of practice for design, handling and installation [11] ISO 14531-2, Plastics pipes and fittings — Crosslinked polyethylene (PE-X) pipe systems for the conveyance of gaseous fuels — Metric series — Specifications — Part 2: Fittings for heat-fusion jointing [12] ISO 14531-3, Plastics pipes and fittings — Crosslinked polyethylene (PE-X) pipe systems for the conveyance of gaseous fuels — Metric series — Specifications — Part 3: Fittings for mechanical jointing (including PE-X/metal transitions) [13] ISO 24033, Pipes made of raised-temperature-resistance polyethylene (PE-RT) — Effect of time and temperature on the expected strength [14] EN 549, Rubber materials for seals and diaphragms for gas appliances and gas equipment [15] EN 573-3, Aluminium and aluminium alloys — Chemical composition and form of wrought products — Part 3: Chemical composition [16] EN 1982, Copper and copper alloys — Ingots and castings [17] EN 10088-2, Stainless steels — Part 2: Technical delivery conditions for sheet/plate and strip of corrosion resisting steels for general purposes [18] EN 12117, Plastics piping systems — Fittings, valves and ancillaries — Determination of gaseous flow rate/pressure drop relationships [19] DVGW-Arbeitsblatt W 542: Verbundrohre in der Trinkwasser-Installation; Anforderungen und Prüfungen ISO/FDIS 17484-1:2006(E) ICS 23.040.20; 23.040.45; 91.140.40 Price based on 33 pages © ISO 2006 – All rights reserved Report of voting on ISO/DIS FORM 13 (ISO) Page 2 of 2 REPORT OF VOTING ON ISO/DIS 17484-1 Closing date of voting 2005-05-16 ISO/TC 138 /SC 4 Secretariat Kiwa Gastec A report shall be returned to ISO/CS no later than 3 months after the closing date of voting on the DIS, whether or not comments have been reviewed and/or a new text has been prepared. Preliminary report (submitted in those cases where comments are still to be considered and/or a decision has not yet been taken, or where it is decided that the nature of comments indicates a need for further consultation and/or reversion to a previous project development stage). To be followed by a 'Final report'. Any preliminary report is for ISO/CS for information, and is not circulated to member bodies) Final report (submitted either immediately, when all comments have been reviewed and a decision can be taken, or following a 'Preliminary report'. The finalreport is circulated by ISO/CS to member bodies, and is distributed with any associated DIS or FDIS text) 1 Result of the voting The above-mentioned document was circulated to member bodies with a request that the ISO Central Secretariat be informed whether or not member bodies were in favour of registration of the DIS as a Final Draft International Standard or for publication in the case of unanimous approval. The vote closed on the date indicated above. The replies listed in annex A (ISO/TC138/SC4 doc. N1271) have been received. 2 3 Comments received Observations of the secretariat See annex B (ISO/TC138/SC4 doc. N1273) 4 Decision of the Chairman Preliminary report (no annexes required) The comments are under review and/or a decision on further procedure has not yet been taken The project is to revert to the Preparatory Stage (a new working draft will be developed) The project is to revert to the Committee Stage (a new committee draft will be developed) Final report Having received 100% approval from the member bodies voting, the DIS is approved for direct publication without change other than editorial (no FDIS vote) (Option not applicable to projects progressing under the Vienna Agreement) A revised text is to be submitted to ISO/CS for the approval procedure (FDIS vote) A revised text is to be submitted to ISO/CS for a further enquiry (DIS) vote Remarks (e.g. observations on how comments were reviewed, date by which a decision is to be taken, date when a text is expected) Enclosures Annex A ISO/TC138/SC4 doc. N1271 Annex B ISO/TC138/SC4 doc. N1273 Signature of the Secretary J.B.W. Wikkerink Date 2005-09-15 Signature of the Chairman M. Wolters Date 2005-09-15 ISO/TC 138/SC 4 Title: Plastics pipes and fittings for the supply of gaseous fuels Secretariat: Kiwa Gastec Technology Attn. J.B.W. Wikkerink PO BOX 137 7300 AC APELDOORN NETHERLANDS Tel: +31 55 5393445 fax: +31 55 5393335 e-mail: iso.tc138.sc4-secr@gastec.nl REQUESTED ACTION Circulated to P- and O-members, and to technical committees and organizations in liaison for: information comments by [date] voting (P-members only: ballot form attached) by P-members of the technical committee or subcommittee concerned have an obligation to vote. Title: Voting results ISO DIS 17484-1 ‘Plastics piping systems – Multi-layered pipe systems for indoor gas installations up to and including 5 bar – Part 1: Specifications for systems’ Source: ISO/CS Project(s): Status: Additional information: Date 2005-09-15 Reference number ISO/TC 138/SC 4 N 1271 Supersedes document This document is still under study and subject to change. It should not be used for reference purposes. Enterprise Workspace: ISO/DIS 17484-1 Wikkerink, J.B.W. (bw@gastec.nl) Thursday, 2005-09-15 Search ISOTC for: (Advanced) From Here Go Personal Enterprise Tools Help Workspace Workspace Log-out Contents Favorites Users & Groups Settings For This Page ISO Standards Development ISOTC home ISO/TC 138 "Plastics pipe... SC 04 "Plastics pipes and... 08. Balloting and comment... Ballots administered by t... ISO/DIS 17484-1 Result of voting P-Members voting: 17 in favour out of 21 = 80.95% (requirement >= 66.66%) (P-Members having abstained are not counted in this vote.) Member bodies voting: 4 negative votes out of 23 = 17.39% (requirement <= 25%) Approved English Title: Plastics piping systems -- Multi-layered pipe systems for indoor gas installations with a maximum operating pressure up to and including 5 bar -- Part 1: Specifications for systems French Title: Systèmes de canalisations en matières plastiques -- Tubes multicouches et leurs assemblages pour une pression maximale de service inférieure ou égale à 5 bar destinés à l'alimentation en gaz à l'intérieur des bâtiments -- Partie 1: Spécifications pour les systèmes Document reference: ISO/DIS 17484-1 Committee: ISO/TC 138/SC 4 Start date: 2004-12-15 End date: 2005-05-16 Opened by ISO/CS on: 2004-12-09 13:46 Closed by ISO/CS on: 2005-05-18 00:33 Voting stage: Enquiry Status: Closed Version: 1 Vote in parallel with: Role: ContentOwner Organization: NEN Note: Ballot Content Download Comments Type Country Member Participation Voted Functions Modified Australia SA P Member Approval 2005-04-11 07:10 Austria ON P Member Disapproval 2005-05-13 13:35 Belgium IBN P Member Approval with comments 2005-05-09 14:32 China SAC P Member Approval 2005-04-29 05:00 Colombia ICONTEC P Member Abstention 2005-05-04 22:20 Denmark DS P Member Approval 2005-05-12 12:54 Finland SFS P Member Disapproval 2005-05-12 07:07 France AFNOR P Member Approval with comments 2005-05-04 10:55 Germany DIN P Member Approval with comments 2005-05-09 16:01 Hungary MSZT P Member Approval 2005-02-07 11:42 Israel SII P Member Approval 2005-04-20 13:40 Italy UNI P Member Disapproval 2005-03-18 10:30 Japan JISC P Member Abstention 2005-05-16 05:44 Korea, Republic of KATS P Member Approval 2005-05-16 10:38 Netherlands NEN Secretariat Approval 2005-05-12 14:08 Norway SN P Member Approval 2005-05-13 09:23 Poland PKN P Member Approval 2005-04-22 08:41 Portugal IPQ O Member Approval 2005-05-16 15:34 Russian Federation GOST R Approval 2005-05-05 10:17 Slovakia SUTN P Member Abstention 2005-05-03 15:19 South Africa SABS P Member Approval 2005-02-28 14:56 Spain AENOR P Member Approval with comments 2005-05-16 11:49 Page 1 of 2ISO Standards Development:ISOTC home:ISO/TC 138 "Plastics pipes, fittings and valves for the transport of fluids":SC 04 "Plastics pip... 15-9-2005http://isotc.iso.org/livelink/livelink?func=ll&objId=3668796&objAction=browse&sort=name Sweden SIS P Member Approval 2005-05-16 13:39 Switzerland SNV P Member Approval with comments 2005-05-12 07:55 United Kingdom BSI P Member Disapproval 2005-04-29 13:14 USA ANSI P Member Approval 2005-05-16 15:52 ISOCS Comment Only 2004-12-15 11:20 Livelink ® Version 9.2.0, Copyright © 1995-2003 Open Text Inc. All rights reserved. Page 2 of 2ISO Standards Development:ISOTC home:ISO/TC 138 "Plastics pipes, fittings and valves for the transport of fluids":SC 04 "Plastics pip... 15-9-2005http://isotc.iso.org/livelink/livelink?func=ll&objId=3668796&objAction=browse&sort=name ISO/TC 138/SC 4 Title: Plastics pipes and fittings for the supply of gaseous fuels Secretariat: Kiwa Gastec Technology Attn. J.B.W. Wikkerink PO BOX 137 7300 AC APELDOORN NETHERLANDS Tel: +31 55 5393445 fax: +31 55 5393335 e-mail: iso.tc138.sc4-secr@gastec.nl REQUESTED ACTION Circulated to P- and O-members, and to technical committees and organizations in liaison for: information comments by [date] voting (P-members only: ballot form attached) by P-members of the technical committee or subcommittee concerned have an obligation to vote. Title: Comments on ISO DIS 17484-1 ‘Plastics piping systems – Multi-layered pipe systems for indoor gas installations up to and including 5 bar – Part 1: Specifications for systems’ Source: ISO/TC 138/SC4 AHG Multi-layer & Barrier Project(s): Status: Additional information: Date 2005-09-15 Reference number ISO/TC 138/SC 4 N 1273 Supersedes document This document is still under study and subject to change. It should not be used for reference purposes. Templatefor comments and secretariat observations Date: September 2005 Document: ISO/DIS 17484-1 1 2 (3) 4 5 (6) (7) MB1 Clause No./ Subclause No./ Annex (e.g. 3.1) Paragraph/ Figure/Table/N ote (e.g. Table 1) Type of com- ment2 Comment (justification for change) by the MB Proposed change by the MB Secretariat observations on each comment submitted EDITORIAL EDITORIAL EDITORIAL FI 1 note 1 Ed Correct the standard number to ISO 18225. GB 1 Scope Ed Last sentence, Para 2: Only PE-X will meet this temperature range. Note 1– ‘Shall’ can’t be used in a Note but if this is considered essential, therefore make the note normative text. Change reference to ISO 18255 to ISO 18225. Note 2 – state ‘PE-RT materials meeting the requirements of ISO 4437 are considered to be PE for the purposes of this standard.’ Add ‘Only PE-X is suitable for the extremes of this temperature range.’ Edit and put into normative text as a continuation of the 3rd paragraph. Edit Agreed DE 2 Ed ISO/CD 20003 is incorrect Change to ISO/CD 21003 Agreed DE 2 Ed Add ISO/DIS 24033 "Pipes made of raised- temperature-resistance polyethylene (PE-RT) - Effect of time and temperature on the expected strength" Agreed CH 2 Ed Add ISO CD 22391 System Standard PE-RT Agreed CH 2 Ed ISO CD 20003 is incorrect Change to ISO CD 21003 Agreed GB 2 Ed ISO 3126 has been revised and published in 2004. ISO CD 18225 becomes DIS Amend Agreed 3 Ed Check definitions against CD 21003 and DIS 21004 Amend as required Agreed 3.1.3 Substitute ‘metallic’ for ‘metal’ Edi Agreed FI 3.5.3 Ed Misprint in the clause number. Agreed GB 5.2.2 Change ‘continuous’ to ‘continuously’ Edit Agreed GB 5.4.1 Table 1 Ed The test parameters for the ‘Thermal stability of the outer layer are not clear. Is the option available for both materials? . Edit, State ‘or at 110C’ Agreed GB 5.4.1.1 Ed Notes need to be numbered Edit Agreed Template for comments and secretariat observations Date: September 2005 Document: ISO/DIS 17484-1 1 2 (3) 4 5 (6) (7) MB1 Clause No./ Subclause No./ Annex (e.g. 3.1) Paragraph/ Figure/Table/N ote (e.g. Table 1) Type of com- ment2 Comment (justification for change) by the MB Proposed change by the MB Secretariat observations on each comment submitted In the first note change ‘elastic’ to ‘viscoelastic’ GB 5.4.1.2 The Note Procedure I can only be used for P pipes should be normative text Add sentence to refer to confirmation testing of clause 5.4.1.4. ‘This method shall only be used for P-pipes’ ‘For details of confirmation testing see clause 5.4.1.4.’ Agreed GB 5.4.1.2/3 Titles Ed To make these procedures clear state Procedure ! (Calculation method) and Procedure II (Testing method) Check text with DIS 21003/4. Edit Agreed GB 5.4.1.3 The word calculate is ambiguous. Replace ‘calculate’ with ‘determine’ and replace ‘calculations’ with ‘determination’. Agreed GB 5.4.1.4 Ed Change ‘conformation’ to ‘confirmation’ Clarify, this should apply to validate the calculation Edit Agreed IT 5.4.1.4. Ed Change “conformation” in “confirmation” Agreed CH 5.5.2 Table 1 Ed PE-RT is not mentioned Change to PE,PE-RT and PEX Agreed GB 6.2 Ed Don’t understand referring to ISO 10838 as the reference for fitting materials. Clarify Agreed GB 7.3 Table 5 Subscript 2 should be 1 and the page footnote should be inserted as table footnote. Delete s from sites at the end of the sentence. Edit Agreed GB 7.3 Table 4 Ed Fitness for purpose requirements apply to joint assemblies rather than pipes in isolation. Change table heading to read 'Requirements for fitness for purpose of joint assemblies'. Agreed GB Annex A Ed This is a list of reference standards for pipe. Should a separate list for fittings be added? Consider Agreed CH Annex A Ed PE-RT is not mentioned Add PE-RT and ISO CD 22391-1 Agreed GB Annex B B3 BBullet point 2 Ed Correct text Multiply this value by 1,1 (10% expansion) Agreed GB Annex B B.2 Ed Delete ‘expanding’ substitute ‘expansion’ Edit Agreed GB Annex D Example Ed This should be described as the justification for temperature/time test parameters. Explain in introductory sentence of this example. Agreed CH Annex D D3 Ed PE-RT is not mentioned Change to PE,PE-RT and PEX Agreed Template for comments and secretariat observations Date: September 2005 Document: ISO/DIS 17484-1 1 2 (3) 4 5 (6) (7) MB1 Clause No./ Subclause No./ Annex (e.g. 3.1) Paragraph/ Figure/Table/N ote (e.g. Table 1) Type of com- ment2 Comment (justification for change) by the MB Proposed change by the MB Secretariat observations on each comment submitted GB Annex D D3 Ed Delete PVC-C Edit Agreed GENERAL GENERAL GENERAL AT 1 1st Ge Plastics pipes for indoor gas installations are not in use in Austria due to certain safety aspects. Therefore it does not make sense to "accept" the contents of the document with an abstention. Merge the document with ISO 18225 and abstain from publication of ISO 17484-1 Noted DE 5.4.1.1 Ge Add in the first Note: "Reference lines of PE- RT can be found in ISO/DIS 24033." Agreed IT 5.4.1.4 Ge The paragraph meaning is not clear. If all the diameters of the similar construction type have to be tested for the confirmation test, it is not clear which is the scope of what stated in the last sentence of the paragraph (“If the SDRm of a smaller diameter than the completed tested…….”). Moreover, by considering the SDRm, the significant parameter for the characterization of a pipe, it’s absolutely redundant to test all the diameter of the same construction type. Change the paragraph as follow: “One diameter of the similar construction type, excluding the diameter tested in accordance with 5.4.1.3 shall be tested in accordance with ISO DIS 17456 for confirmation test”. Rejected All diameters will be tested according to ISO DIS 17456 FI General Ge This draft is not yet ready to proceed to FDIS stage even if approved by voting. The procedure concerning the determination of the long term hydrostatic strength especially for M pipes leaves a lot of open questions. Noted TECHNICAL TECHNICAL TECHNICAL DE 1 Note 2 Te The wording has to be modified. "PE-RT is considered as PE but with specific properties concerning hoop stress performance (see 5.4.1.1)." Agreed GB 1 Para 2 Te All polymeric layers should be produced from PE or PE-X with the exception of adhesive and barrier layers the selection of which should be the responsibility of the pipe manufacturer. This would Consider modification to specify layer materials should be PE or PE-X as referenced in Annex A. Partially accepted, only for stress bearing layers Template for comments and secretariat observations Date: September 2005 Document: ISO/DIS 17484-1 1 2 (3) 4 5 (6) (7) MB1 Clause No./ Subclause No./ Annex (e.g. 3.1) Paragraph/ Figure/Table/N ote (e.g. Table 1) Type of com- ment2 Comment (justification for change) by the MB Proposed change by the MB Secretariat observations on each comment submitted remove the uncertainty regarding which layer is or is not stress bearing. CH 1 Note 2 Te PE-RT is not PE. The mathematic equation is grossly different from ISO 4437 covered PE, in particular at temperatures > 40°C. Compared with Note 4 that PEX is rated a thermoplastic material its either both PE or PE-RT is listed under its ISO number in order to avoid discrimination. Delete Note 2 andmake reference to ISO CD 22391- 1 System Standard PE-RT under the Normative References. Rejected No suitable for gas. See ISO 23033 GB 3.1.1 Te All layers with the exception of adhesive and barrier layers should be selected from Annex A. Modify to require all layers to be selected from Annex A list. Rejected FI 3.3.2 Te The call the term pCD predicted design pressure is most confusing. We do not regard it logic at all to name this pressure so. To have both a design pressure, pD, which shall be marked on the pipe and connected to that a somewhat lower predicted design pressure is unlucky and will be impossible to explain and indicates that there is a real risk of pipe failure. The evaluation system used for single-layer pipes operates with stresses and there the allowed pressure (PN, MOP etc) always contains the design coefficient applied on the LCL value. So applied on such pipes pCD would be clearly above the PN value. The terminology must be re-considered. Agreed Use similar wording LTPS to DP Take into account Design coefficient and 60 C CH 3.5 3.5.1,3.5.2 Te To be defined LTHS and LPL values are grossly different for PE-RT and PE according to ISO 4437. Add ISO 22391 to allow the use of correct resin specific data. Partially accepted ISO 24033 as reference FI 3.5.5 Te The term minimum required pressure MRP is also confusing even if the definition is OK. A better name should be found.. Rejected ISO DIS 17456 GB 4.1 Te What are the bending properties of the pipe and how do they relate to the pressure drop other than minimum bend radius? Clarify. Agreed Text will be modified Template for comments and secretariat observations Date: September 2005 Document: ISO/DIS 17484-1 1 2 (3) 4 5 (6) (7) MB1 Clause No./ Subclause No./ Annex (e.g. 3.1) Paragraph/ Figure/Table/N ote (e.g. Table 1) Type of com- ment2 Comment (justification for change) by the MB Proposed change by the MB Secretariat observations on each comment submitted FR 5 Te The use of PE-X fittings should be considered by the AHG experts. May be it could be as optional. Agreed CH 5.1 5.1.1 Te Polymer shall conform to relevant Product Standard, which is not the case for PE-RT under ISO 4437. Add ISO 22391 Superseded GB 5.1.1 Te The use of reference materials listed in Annex A is dependent upon the declaration of the manufacturer that the layer is stress bearing. It is possible that for M pipes the outer layer may be considered non stress bearing in terms of resistance to internal pressure leaving the selection of layer material from outside the list given in Annex A. Low performing materials particularly in terms of resistance to slow crack growth may therefore be used in applications where stresses may be generated by loads other than that of internal pressure e.g. installation bending stresses and internal manufacturing stresses. State clearly that all polymeric layer materials with the exception of adhesives and barrier layer materials shall comply with the materials covered by Annex A. Partially accepted Only stress bearing layers GB 5.4.1 Te The UK continues to have serious reservations about the use of the calculation method as defined in ISO 17456. Until a satisfactory resolution of ISO 17456 is achieved the calculation method is not acceptable for it to be included in a standard for gas pipe. Remove references to the calculation method and focus only on direct measurement of resistance to internal pressure as undertaken in accordance with ISO 9080. This would also align with the approach in ISO 4437. Rejected Superseded CH 5.4.1 Te ISO/DIS 17456 was revised and improved (ISO/DIS 17456:2004-12 2nd DIS version). Delete the lengthy explanation and refer directly to ISO 17456: “Determination of the long-term hydrostatic strength in accordance with ISO 17456.” Rejected Superseded CH 5.4.1.1/5.4.1.2 Te LTHS and LPL data have to be used for calculation according to the reference lines of the relevant System Standards which is not possible for PE-RT on the basis of ISO 4437. Would one do so, it would Add ISO CD 22391 as basis for calculations Partially accepted Superseded Template for comments and secretariat observations Date: September 2005 Document: ISO/DIS 17484-1 1 2 (3) 4 5 (6) (7) MB1 Clause No./ Subclause No./ Annex (e.g. 3.1) Paragraph/ Figure/Table/N ote (e.g. Table 1) Type of com- ment2 Comment (justification for change) by the MB Proposed change by the MB Secretariat observations on each comment submitted be an abuse of the standard. DE 5.4.1.2 Te ISO/DIS 17456 was revised and improved (ISO/DIS 17456:2004-12 2nd DIS version). Delete the lengthy explanation and refer directly to ISO/DIS 17456: “Determination of the long-term hydrostatic strength in accordance with ISO/DIS 17456.” Rejected GB 5.4.4 Te A test conducted at –20 °C will not assess the resistance of materials to SCG. Annex E states ‘notching through the outer layer’ so resistance cannot be tested and effectively destroying the integrity of the pipe! Review and consider the introduction of a SCG test on the material of the outer layer. The PENT test may be suitable. ISO 13480 Cone test Bore Ø Bore class 2,3 X 25 mm GB 6.1.1 Te Add ISO 14531-2 for PE-X fittings and ISO 14531-3 for Mechanical fittings for PE-X. Add reference Agreed GB 6.4 Te What is a standardised system? Does this mean to enable pipe conforming to this standard to be connect to pipe conforming to another relevant product standard, eg EN 1555? More information is necessary to enable the design of suitable transition fittings. Clarify Transit to f.i. ISO 7 system. No standard could not be mentioned because no world wide standardisation is available GB 7.3 Table 4 – tensile load Te ISO 10838 relates to mechanical requirements of fittings for use with PE gas pipes. It contains a 1 hr constant load test at 20 °C and a 500 h constant load test at 80 °C (now described in ISO 19899 as a stand alone test method). Fittings have to meet one minimum load level without leakage. It is not necessary to have 7 classes of requirements. In the tensile load test, it should be made clear that class means diameter class. Follow ISO 10838 by removing the 800 h test and substituting the 500 h test at 80 °C and restrict the specification to 1 strength level. Clarify that after testing fittings/joints shall not leak. Rejected New test could be considered in a future revision. GB 7.3 Table 4 – Thermal cycling Te It is noted that leakage is permitted after 10 cycles of temperature. This may not be acceptable for joints installed within the building. Re-assess. Rejected No experience FI 8.3 Table 5 Te The pipes shall be marked with the pressure class pD, but there is nowhere any indication how those values shall be chosen. It is not acceptable that Partially accepted To be marked with “MOP Template for comments and secretariat observations Date: September 2005 Document: ISO/DIS 17484-1 1 2 (3) 4 5 (6) (7) MB1 Clause No./ Subclause No./ Annex (e.g. 3.1) Paragraph/ Figure/Table/N ote (e.g. Table 1) Type of com- ment2 Comment (justification for change) by the MB Proposed change by the MB Secretariat observations on each comment submitted there can be e.g. pipes of pressure classes pD 4,3; 7,34; 11,6 etc in the market. 5 bar” GB All annexes Te All annexes should contain a clause detailing the principle of the test method described. Add principle clause AgreedES All annexes Te There is little experience in some of the tests specified in the annexes. More detail would have to occur. For example: Annex C: Manipulation of the tube for another test after the test of condensed is dangerous for the health and would have to consider a test alternative. Annex E: If a cut a longitudinal notch becomes until the aluminium layer it is probable to damage this layer. A cut longitudinal notch into the outer layer plastic until a depth of 80% would have to be sufficient. Annex G: The pressure will diminish due to the thermal expansion and to creep particularly in all construction only of polymer. How can be calculated this with respect to the flight. Noted GB Annex B B.3 point 3 Te Measure wall thickness in accordance with ISO 3126 Spelling ‘points’. Edit Agreed GB Annex C Te Handling the test piece after the condensate test is hazardous. Add a note to this effect. Add note Rejected Normal laboratory practice FR Annex C Te The test specimen, prepared as for the resistance to gas constituents, is tested according to a cone test, which is not usual. Have we sufficient data to be sure that this is not hazardous? Rejected DE Annex D Te There are alternative test methods which are backed up by ISO/CD 21003-2 and scientific literature. Firstly ISO 2578 ( - delivers meaningful results for all kind of stabilizer formulations without any restriction compared to the method described under Annex B) or secondly if a material cannot be extruded into single walled pipe, injection moulding Add ISO/CD 21003-2:2005-02 (3rd version) Annex E "Thermal stability of the outer layer of M-pipes” Rejected Template for comments and secretariat observations Date: September 2005 Document: ISO/DIS 17484-1 1 2 (3) 4 5 (6) (7) MB1 Clause No./ Subclause No./ Annex (e.g. 3.1) Paragraph/ Figure/Table/N ote (e.g. Table 1) Type of com- ment2 Comment (justification for change) by the MB Proposed change by the MB Secretariat observations on each comment submitted of test tubes can be done to perform an ISO 9080 as a reliable, accepted method without any restriction regarding the stabilizer formulation. The method described in Annex D is not appropriate to calculation the thermal stability. The requirement "no cracks" is not a measure which can be used for the extrapolation. CH Annex D Te There are alternative test methods which are backed up by ISO/CD 21003-2 and scientific literature. Firstly ISO 2578 ( - delivers meaningful results for all kind of stabilizer formulations without any restriction compared to the method described under Annex B) or secondly if a material cannot be extruded into single walled pipe, injection moulding of test tubes can be done to perform an ISO 9080 as a reliable, accepted method without any restriction regarding the stabilizer formulation. The method described in Annex D is not appropriate to calculation the thermal stability. The requirement "no cracks" is not a measure which can be used for the extrapolation. Add ISO/CD 21003-2:2005-02 (3rd version) Annex E "Thermal stability of the the outer layer of M-pipes” Rejected GB Annex E Te How can the notch be cut down to the aluminium layer without actually marking it so that a crack is able to initiate more easily? Consider Accepted Will be the cone test ISO 13480 FR Annex E Te A notch carried out until the metal layer will probably damage it. A notch until 80 % of the thickness of the PE layer could be sufficient. idem GB Annex G Te Should this be carried out in a fume cupboard or enclosed in a secondary pipe to facilitate THT detection. If set up in an open laboratory this will be difficult to detect? Consider Rejected Superseded FR Annex K Te The pressure will decrease due to the thermal expansion and the creep behaviour of the different materials. How is it taken into consideration for the verification of the leakage? Note will be incorporated GB Annex K Te In an all polymer construction creep will occur causing a pressure drop, how is this taken into account. Consider Note will be incorporated Template for comments and secretariat observations Date: September 2005 Document: ISO/DIS 17484-1 1 2 (3) 4 5 (6) (7) MB1 Clause No./ Subclause No./ Annex (e.g. 3.1) Paragraph/ Figure/Table/N ote (e.g. Table 1) Type of com- ment2 Comment (justification for change) by the MB Proposed change by the MB Secretariat observations on each comment submitted ES General1 Te The use of fittings of PE-X in agreement with the ISO 14531-2, It could be an option. Agreed Fr General2 Te More details should be given in the Annexes for the test methods which are new. Agreed BE General3 Te L’utilisation de raccords PE-X en accord avec l’ISO 14531-2 devrait être une option. Il y a peu d’expérience sur certains tests décrits dans les annexes. Plus de détails devraient être donnés. Examples : Agreed The application of PEX fittings according to ISO 14531-2 should be an option BE General4 Annex C Te Manipuler le tube pour un autre test après le test « condensate » est hasardeux et une alternative devrait être trouvée. Noted BE General5 Annex E Te Entailler le tube jusqu’à la couche alu peut endommager cette couche. Une entaille au rasoir dans la couche polymérique à 80% de l’épaisseur devrait être suffisante. Cone test be introduced BE General6 Annex G Te La pression diminue du à l’expansion thermique et au fluage, en particulier dans le domaine des polymères. Comment cela est-il pris en compte dans l’évaluation des fuites ? idem For the Secretariat ( from ISO/CS) ** General The document should be put on the template properly with the right styles used for the various parts. Agreed ** Foreword There is (at least as yet) no part 2 Agreed Template for comments and secretariat observations Date: September 2005 Document: ISO/DIS 17484-1 1 2 (3) 4 5 (6) (7) MB1 Clause No./ Subclause No./ Annex (e.g. 3.1) Paragraph/ Figure/Table/N ote (e.g. Table 1) Type of com- ment2 Comment (justification for change) by the MB Proposed change by the MB Secretariat observations on each comment submitted ** Scope The information in notes 1 and 3 should be put into the body of the text. Agreed ** Clause 2 Please use the most current version of the introductory text. titles should be in italics. Agreed ** Clause 2 ISO 3126 - a new edition may be finalized before this document is finalized Agreed ** Clause 2 18225, 20003 - CD cannot be used as a norm ref. Agreed ** Clause 2 ISO standards should be listed first then the EN standards Agreed ** Clause 2 EN 549 - date is 1994 Agreed ** Clause 2 EN 713 - date is 1993 Agreed ** Clause 2 EN1555-3 - date is 2002 Agreed ** 3.1.3 definitions should be a single phrase with additional information in a note Agreed ** 3.2.1, etc. term and symbol or acronym should be on separate lines Agreed ** 3.2.2 units for defined terms are given in a note Agreed ** 5.4.1.1 notes in the same subclause should be numbered. Agreed ** 5.4.1.1 first note: notes cannot contain "may" (a permission) Agreed ** 5.5.2 should have an introductory sentence. Agreed ** 6.3 note cannot contain a requirement (=shall) Agreed ** D.4 example the comma, not the period, is used as the decimal separator Agreed ** Figure K.1 Some parts the letters below the line have been truncated: e.g. pipe, fittings Agreed
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