ДСТУ Б EN 1555-2:2012
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page 1 2 3 4 4.1 4.2 4.3 5 5.1 5.2 6 6.1 6.2 6.3 6.4 6.5 6.6 7 7.1 7.2 7.3 8 8.1 8.2 9 10 10.1 10.2 10.3 1 Scope 1
2 Normative references 2
3 Terms and definitions, symbols
and abbreviations 3
4 Material 4
4.1 Compound for pipes 4
4.2 Compound for identification stripes 4
4.3 External reprocessable and recyclable material 4
5 General characteristics 4
5.1 Appearance 4
5.2 Colour 4
6 Geometrical characteristics 5
6.1 Measurement of dimensions . . . 5
6.2 Mean outside diameters, out-of-roundness (ovality) and tolerances 5
6.3 Wall thicknesses and related tolerances 7
6.4 Circumferential reversion of pipes with a d n equal to or greater than
250 mm 9
6.5 Coiled pipe 9
6.6 Lengths 9
7 Mechanical characteristics 9
7.1 Conditioning 9
7.2 Requirements 9
7.3 Retest in case of failure at80 8 Physical characteristics 15
8.1 Conditioning 15
8.2 Requirements 15
9 Performance requirements 17
10 Marking 17
10.1 General 17
10.2 Minimum required marking . . . 18
10.3 Additional marking 19
Annex A (normative)
Pipes with co-extruded layers 20
В?.1 В?.2 В?.3 В?.4 В?.5 В?.6 Annex B (normative) Pipes with peelable layer 22
В?.1 General 22
В?.2 Geometrical characteristics . . . 22
В?.3 Mechanical characteristics . . . 22
В?.4 Physical characteristics 23
В?.5 Coating adhesion 23
В?.6 Marking 23
Annex C (normative) Squeeze-off technique 24
Bibliography 25 EN 1555-2:2010 - - - - -
PLASTICS PIPING SYSTEMS FOR THE SUPPLY OF GASEOUS FUELS - POLYETHYLENE (PE) -Part 2: Pipes
1 a) b) EN 1555 ( - PE - PE 1 Scope
This part of EN 1555 specifies the characteristics of pipes made from polyethylene (PE) for piping systems in the field of the supply of gaseous fuels.
It also specifies the test parameters for the test methods referred to in this standard.
In conjunction with Parts 1 and 3 to 5 of EN 1555, it is applicable to PE pipes, their joints and to joints with components of PE and other materials intended to be used under the following conditions:
а?) a maximum operating pressure, MOP, up to and including 10 bar 1) ;
b) an operating temperature of 20 NOTE 1 For other operating temperatures, derating coefficients should be used, see EN 1555-5.
EN 1555 covers a range of maximum operating pressures and gives requirements concerning colours and additives.
It covers three types of pipe:
- PE pipes (outside diameter d n ) including any identification stripes;
- PE pipes with co-extruded layers on either or both the outside and/or inside of the pipe (total outside diameter d n ) as specified in Annex A, where all layers have the same MRS rating;
- PE 2 EN 1555-1:2010 EN 12106 EN ISO 1133:2005 EN ISO 1167-1:2006 EN ISO 1167-2 EN ISO 2505 EN ISO 3126 - PE pipes (outside diameter d n ) with a peelable, contiguous thermoplastics additional layer on the outside of the pipe ('coated pipe') as specified in Annex B.
NOTE 2. It is the responsibility of the purchaser or specifier to make the appropriate selections from these aspects, taking into account their particular requirements and any relevant national regulations and installation practices or codes.
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.
EN 1555-1:2010, Plastics piping systems for the supply of gaseous fuels - Polyethylene (PE) - Part 1: General
EN 1555-5, Plastics piping systems for the supply of gaseous fuels - Polyethylene (PE) - Part 5: Fitness for purpose of the system
EN 12106, Plastics piping systems - Polyethylene (PE) pipes - Test method for the resistance to internal pressure after application of squeeze-off
EN ISO 1133:2005, Plastics - Determination of the melt mass-flow rate (MFR) and the melt volume-flow rate (MVR) of thermoplastics (ISO 1133:2005)
EN ISO 1167-1:2006, Thermoplastics pipes, fittings and assemblies for the conveyance of fluids - Determination of the resistance to internal pressure - Part 1: General method
(ISO 1167-1:2006)
EN ISO 1167-2, Thermoplastics pipes, fittings and assemblies for the conveyance of fluids - Determination of the resistance to internal pressure - Part 2: Preparation of pipe test pieces (ISO 1167-2:2006)
EN ISO 2505, Thermoplastics pipes - Longitudinal reversion - Test method and parameters (ISO 2505:2005)
EN ISO 3126, Plastics piping systems - Plastics components - Determination of dimensions (ISO 3126:2005)
EN ISO 13479:2009 EN ISO 13968 ISO 4065:1996 ISO 6259-3 ISO 11357-6 ISO 13480 3 EN ISO 6259-1, Thermoplastics pipes - Determination of tensile properties - Part 1: General test method (ISO 6259-1:1997)
EN ISO 9969, Thermoplastics pipes - Determination of ring stiffness (ISO 9969:2007)
EN ISO 13477, Thermoplastics pipes for the conveyance of fluids - Determination of resistance to rapid crack propagation (RCP) - Small-scale steady-state test (S4 test) (ISO 13477:2008)
EN ISO 13478, Thermoplastics pipes for the conveyance of fluids - Determination of resistance to rapid crack propagation (RCP) - Full scale test (FST) (ISO 13478:2007)
EN ISO 13479:2009, Polyolefin pipes for the conveyance of fluids - Determination of resistance to crack propagation - Test method for slow crack growth on notched pipes (ISO 13479:2009)
EN ISO 13968, Plastics piping and ducting systems -Thermoplastics pipes - Determination of ring flexibility (ISO 13968:2008)
ISO 4065:1996, Thermoplastics pipes - Universal wall thickness table
ISO 6259-3, Thermoplastics pipes - Determination of tensile properties - Part 3: Polyolefin pipes
ISO 11357-6, Plastics - Differential scanning calorimetry (DSC) - Part 6: Determination of oxidation induction time (isothermal OIT) and oxidation induction temperature (dynamic OIT)
ISO 13480, Polyethylene pipes - Resistance to slow crack growth - Cone test method
3 Terms and definitions, symbols and abbreviations
For the purposes of this document the terms and definitions, symbols and abbreviations given in EN 1555-1:2010 apply.
4 4.1 4.2 4.3 5 5.1 5.2 4 Material
4.1 Compound for pipes
The pipes shall be made from virgin material or own reprocessable material from the same PE compound or a mixture of both materials. Reprocessable material from coextruded pipes or from pipes reprocessed with the peelable layer attached shall not be used. Own reprocessed material from the base pipe of peelable layer pipes can be used.
The compound(s) from which the pipes are made shall conform to EN 1555-1.
4.2 Compound for identification stripes
For black pipe with yellow or orange identifications stripes (see also 5.2), the compound used for these identification stripes shall be made from the same base polymer (PE) as one of the pipe compounds for which fusion compatibility has been proven.
4.3 External reprocessable and recyclable material
Reprocessable material obtained from external sources and recyclable material shall not be used.
5 General characteristics
5.1 Appearance
When viewed without magnification, the internal and external surfaces of pipes shall be smooth and clean and shall have no scoring, cavities and other surface defects to an extent that would prevent conformity to this standard.
The ends of the pipe shall be cut cleanly and square to the axis of the pipe.
5.2 Colour
Pipes shall be black (PE 80 or PE 100), yellow (PE 80) or orange (PE 100). In addition black PE 80 pipes may be identified by yellow stripes and black PE 100 pipes may be identified by yellow or orange stripes, according to national preference.
6 6.1 6.2 The outer coextruded layer of coextruded pipes (see Annex A) or the outer peelable layer of peelable layer pipes (see Annex B) shall be either black, yellow or orange. In addition identification stripes may be used according to national preference.
NOTE 1 In some countries pipes made out of non-pig- mented compound in conjunction with an external peelable layer are permitted, providing the compound conforms to the requirements of this document. If this is allowed in a country, this should be clearly stated in the national foreword.
NOTE 2 National preference for colour should be stated in the national foreword.
6 Geometrical characteristics
6.1 Measurement of dimensions
The dimensions of the pipe shall be measured in accordance with EN ISO 3126, and rounded to the next 0,1 mm. In case of dispute the measurement shall not be made less than 24 h after manufacture after being conditioned for at least 4 h at (23 NOTE Indirect measurement at the stage of production is allowed at shorter time periods providing evidence is shown of correlation.
6.2 Mean outside diameters, out-of-roundness (ovality) and tolerances
The mean outside diameters of the p i p d e , em shall conform to Table 1.
For straight pipes, the maximum out-of-roundness shall conform to Table 1. For coiled pipes, the maximum out-of-roundness shall be specified by agreement between the manufacturer and the end-user. Table 1 - Mean outside diameters and out-of-roundness
Dimensions in millimetres
a Grade B according to ISO 11922-1:1997 [3].
b b Measurement of out-of-roundness shall be made at the point of manufacturing.
c c If other values for the out-of-roundness than those given in this table are necessary (eg coiled pipes), they shall be agreed between the manufacturer and the end-user. 6.3 6.3.1 6.3 Wall thicknesses and related tolerances
6.3.1 Minimum wall thicknesses
The use of any SDR derived from the pipe series S given according to ISO 4065:1996 is permitted.
The minimum wall thickness e , , of pipes with
SDR 17,6, SDR 17 and SDR 11 shall conform to Table 2. Table 2 - Minimum wall thicknesses for pipes of SDR 17,6, SDR 17 and SDR 11
b SDR 17,6 b The SDR 17,6 series will be removed at the next revision of this standard.
c c The calculated values o