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eLibrary > BS EN 1796:2013 Plastics piping systems for water supply with or without pressure. Glass-reinforced thermosetting plastics (GRP) based on unsaturated polyester resin (UP) >

BS EN 1796:2013 Plastics piping systems for water supply with or without pressure. Glass-reinforced thermosetting plastics (GRP) based on unsaturated polyester resin (UP), 2013

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BS EN 1796:2013 Plastics piping systems for water supply with or without pressure. Glass-reinforced thermosetting plastics (GRP) based on unsaturated polyester resin (UP), 2013

Contents Page
Foreword
Introduction
1 Scope
2 Normative references
3 Terms, definitions and symbols
4 General requirements [Go to Page]
4.1 Classification [Go to Page]
4.1.1 General
4.1.2 Categories
4.1.3 Nominal size
4.1.4 Nominal stiffness
4.1.5 Nominal pressure
4.2 Materials [Go to Page]
4.2.1 General
4.2.2 Reinforcement
4.2.3 Resin
4.2.4 Aggregates and fillers
4.2.5 Elastomers
4.2.6 Metals
4.3 Wall construction [Go to Page]
4.3.1 Inner layer
4.3.2 Structural layer
4.3.3 Outer layer
4.4 Appearance
4.5 Reference conditions for testing [Go to Page]
4.5.1 Temperature
4.5.2 Properties of water for testing
4.5.3 Loading conditions
4.5.4 Preconditioning
4.5.5 Measurement of dimensions
4.6 Elapsed time for determination of long-term properties, (x)
4.7 Joints [Go to Page]
4.7.1 General
4.7.2 Types of joint
4.7.3 Flexibility of the jointing system [Go to Page]
4.7.3.1 Allowable maximum angular deflection
4.7.3.2 Maximum draw
4.7.4 Sealing ring
4.7.5 Adhesives
5 Pipes [Go to Page]
5.1 Geometrical characteristics [Go to Page]
5.1.1 Diameter [Go to Page]
5.1.1.1 Diameter series
5.1.1.2 Nominal size
5.1.1.3 Specified diameters [Go to Page]
5.1.1.3.1 General
5.1.1.3.2 Series A (Internal diameter specified)
5.1.1.3.3 Series B (External diameter specified)
5.1.1.4 Minimum internal diameters for pipes with a prefabricated thermoplastics liner
5.1.1.5 Tolerances [Go to Page]
5.1.1.5.1 General
5.1.1.5.2 Series A — Tolerances on internal diameter
5.1.1.5.3 Series B1 — Tolerances on external diameter
5.1.1.5.4 Series B2, B3 and B4 — Tolerances on external diameter
5.1.2 Wall thickness
5.1.3 Length [Go to Page]
5.1.3.1 Nominal length
5.1.3.2 Laying length
5.2 Mechanical characteristics [Go to Page]
5.2.1 Initial specific ring stiffness [Go to Page]
5.2.1.1 General
5.2.1.2 Number of test pieces for type test purposes
5.2.1.3 Number of test pieces for quality control test purposes
5.2.1.4 Length of test pieces
5.2.2 Long-term specific ring stiffness under wet conditions [Go to Page]
5.2.2.1 Temperature and pH of the water
5.2.2.2 Method of test to determine S0
5.2.2.3 Time intervals for measurement
5.2.2.4 Elapsed time at which the property is to be determined
5.2.2.5 Method of test
5.2.2.6 Requirement
5.2.2.7 Number of test pieces for type test purposes
5.2.3 Initial resistance to failure in a deflected condition [Go to Page]
5.2.3.1 General
5.2.3.2 Requirement
5.2.3.3 Minimum initial ring deflection [Go to Page]
5.2.3.3.1 For bore cracks
5.2.3.3.2 For structural failure
5.2.3.4 Number of test pieces for type test purposes
5.2.3.5 Number of test pieces for quality control test purposes
5.2.4 Ultimate long-term resistance to failure in a deflected condition [Go to Page]
5.2.4.1 General
5.2.4.2 Requirement
5.2.4.3 Criteria for failure
5.2.4.4 Distribution of failure times
5.2.4.5 Test pieces for type test purposes
5.2.5 Initial specific longitudinal tensile strength [Go to Page]
5.2.5.1 General
5.2.5.2 Requirement [Go to Page]
5.2.5.2.1 For pipes not required to resist the longitudinal load produced by the internal pressure acting on the relevant end-load conditions, when tested in accordance with Method A, Method B or Method C of ISO 8513, using test pieces conforming to 5...
5.2.5.2.2 For pipes required to resist the longitudinal load produced by the internal pressure acting on the relevant end conditions the minimum initial longitudinal specific tensile strength, (l*, expressed in Newtons per millimetre circumference, sh...
5.2.5.3 Number of test pieces for type test purposes
5.2.5.4 Number of test pieces for quality control test purposes
5.2.6 Initial failure and design pressures for pressure pipes [Go to Page]
5.2.6.1 General
5.2.6.2 Requirement [Go to Page]
5.2.6.2.1 When tested in accordance with ISO 8521 by one of the Methods A to F, using test pieces in accordance with 5.2.6.4, the value of the initial failure pressure calculated in accordance with 5.2.6.2.2 shall conform to the value derived using th...
5.2.6.2.2 Using the pressure regression ratio, RRP (see 3.20), obtained from long-term pressure testing conducted in accordance with EN 1447 and evaluated by the procedures detailed in ISO 10928 the minimum initial failure pressure, P0,min (see 3.17),...
5.2.6.3 Number of test pieces for type test purposes
5.2.6.4 Number of test pieces for quality control test purposes
5.2.6.5 Dimensions of test pieces [Go to Page]
5.2.6.5.1 For Method A
5.2.6.5.2 For Method B
5.2.6.5.3 For Method C
5.2.6.5.4 For Method D
5.2.6.5.5 For Method E
5.2.6.5.6 For Method F
5.2.7 Long-term failure pressure [Go to Page]
5.2.7.1 General
5.2.7.2 Requirement
5.2.7.3 Number of test pieces for type test purposes
5.2.7.4 Length of the test pieces
5.2.7.5 Distribution of failure times
5.3 Marking [Go to Page]
5.3.1 Marking details shall be printed or formed directly on the pipe in such a way that the marking does not initiate cracks or other types of failure.
5.3.2 If printing is used, the colouring of the printed information shall differ from the basic colouring of the product and such that the markings shall be readable without magnification.
5.3.3 The following marking details shall be on the outside of each pipe, and in the case of pipes of DN 600 or greater shall be either on the inside or on the outside surface.
6 Fittings [Go to Page]
6.1 General [Go to Page]
6.1.1 Diameter series.
6.1.2 Nominal pressure (PN).
6.1.3 Nominal stiffness (SN).
6.1.4 Joint type.
6.1.5 Pipe type.
6.1.6 Mechanical characteristics of fittings.
6.1.7 Installed leak-tightness of fittings.
6.1.8 Dimensions.
6.2 Bends [Go to Page]
6.2.1 Classification of bends [Go to Page]
6.2.1.1 General
6.2.1.2 Nominal size (DN)
6.2.1.3 Bend type
6.2.2 Dimensions and tolerances of bends [Go to Page]
6.2.2.1 Tolerance on diameter
6.2.2.2 Fitting angle and angular tolerances
6.2.2.3 Radius of curvature (R) [Go to Page]
6.2.2.3.1 Moulded bends
6.2.2.3.2 Fabricated bends
6.2.2.4 Length [Go to Page]
6.2.2.4.1 General
6.2.2.4.2 Laying length
6.2.2.4.3 Body length
6.2.2.5 Tolerances on lengths of bends [Go to Page]
6.2.2.5.1 Bends for use with rigid joints
6.2.2.5.2 Bends for use with flexible joints
6.3 Branches [Go to Page]
6.3.1 Classification of branches [Go to Page]
6.3.1.1 General
6.3.1.2 Nominal size (DN)
6.3.1.3 Fitting angle
6.3.1.4 Branch type
6.3.2 Dimensions and tolerances of branches [Go to Page]
6.3.2.1 Tolerance on diameter
6.3.2.2 Angular tolerances
6.3.2.3 Length [Go to Page]
6.3.2.3.1 General
6.3.2.3.2 Body length
6.3.2.3.3 Offset length
6.3.2.3.4 Laying length
6.3.2.3.5 Tolerances on laying length [Go to Page]
6.3.2.3.5.1 Branches for use with rigid joints
6.3.2.3.5.2 Branches for use with flexible joints
6.4 Reducers [Go to Page]
6.4.1 Classification of reducers [Go to Page]
6.4.1.1 General
6.4.1.2 Nominal size (DN)
6.4.1.3 Reducer type
6.4.2 Dimensions and tolerances of reducers [Go to Page]
6.4.2.1 Tolerance on diameter
6.4.2.2 Wall thickness [Go to Page]
6.4.2.2.1 The wall thickness of the tapered section of the reducer shall not be less than the wall thickness determined by Formula (13):
6.4.2.3 Length [Go to Page]
6.4.2.3.1 General
6.4.2.3.2 Laying length
6.4.2.3.3 Body length
6.4.2.3.4 Length of tapered section
6.4.2.3.5 Tolerances on laying length [Go to Page]
6.4.2.3.5.1 Reducers for use with rigid joints
6.4.2.3.5.2 Reducers for use with flexible joints
6.4.3 Mechanical characteristics of tapered section laminate
6.5 Non Pressure Saddles [Go to Page]
6.5.1 Classification of saddles [Go to Page]
6.5.1.1 General
6.5.1.2 Nominal size (DN)
6.5.1.3 Wall thickness
6.5.1.4 Fitting angle
6.5.2 Dimensions and tolerances of saddles [Go to Page]
6.5.2.1 Tolerance on diameter
6.5.2.2 Length
6.6 Flanges [Go to Page]
6.6.1 Classification of flanges [Go to Page]
6.6.1.1 General
6.6.1.2 Nominal size (DN)
6.6.1.3 Flange designation
6.6.2 Dimensions and tolerances for flanged adaptors [Go to Page]
6.6.2.1 Diameter
6.6.2.2 Length [Go to Page]
6.6.2.2.1 Tolerances on length [Go to Page]
6.6.2.2.1.1 Flanged adaptors for use with end load bearing joints
6.6.2.2.1.2 Flanged adaptors for use with non-end load bearing joints
6.7 Marking
7 Joint performance [Go to Page]
7.1 General [Go to Page]
7.1.1 Interchangeability
7.1.2 Test temperature
7.1.3 Non-pressure piping
7.2 Dimensions
7.3 Non-end-load-bearing flexible joints with elastomeric sealing rings [Go to Page]
7.3.1 General
7.3.2 Requirements [Go to Page]
7.3.2.1 General
7.3.2.2 Draw
7.3.2.3 Angular deflection
7.3.2.4 Leak-tightness when subject to internal pressure following assembly
7.3.2.5 Leak-tightness test when subject to negative pressure
7.3.2.6 Leak-tightness test when simultaneously subject to misalignment and draw
7.3.2.7 Leak-tightness test when subject to positive cyclic pressure
7.3.2.8 Leak-tightness test when simultaneously subject to angular deflection and draw
7.3.3 Number of test pieces for type test purposes
7.3.4 Test pieces
7.4 End-load-bearing flexible joints with elastomeric sealing rings [Go to Page]
7.4.1 General
7.4.2 Performance requirements for locked-socket-and-spigot joints with elastomeric sealing rings [Go to Page]
7.4.2.1 Resistance to pressure including the end thrust [Go to Page]
7.4.2.1.1 General
7.4.2.1.2 Initial leakage
7.4.2.1.3 External pressure differential
7.4.2.1.4 Misalignment with internal pressure
7.4.2.1.5 Short duration resistance
7.4.2.1.6 Resistance of the joint to bending and pressure including, if applicable, end thrust [Go to Page]
7.4.2.1.6.1 General
7.4.2.1.6.2 Testing in accordance with ISO 7432
7.4.2.1.6.3 Testing in accordance with Annex A
7.4.2.2 Number of test pieces for type test purposes
7.4.2.3 Test pieces
7.5 Wrapped or cemented joints [Go to Page]
7.5.1 General
7.5.2 Performance requirements [Go to Page]
7.5.2.1 Resistance to pressure excluding the end thrust
7.5.2.2 Resistance to pressure including the end thrust
7.5.2.3 Resistance of the joint to bending and pressure including, if applicable, end thrust [Go to Page]
7.5.2.3.1 General
7.5.2.3.2 Testing in accordance with ISO 8533
7.5.2.3.3 Testing in accordance with Annex A
7.5.3 Number of test pieces for type test purposes
7.5.4 Test pieces
7.6 Bolted flange joints [Go to Page]
7.6.1 General
7.6.2 Performance requirements [Go to Page]
7.6.2.1 Resistance to pressure excluding the end thrust
7.6.2.2 Resistance to pressure including the end thrust
7.6.2.3 Resistance of the joint to bending and pressure including, if applicable, end thrust [Go to Page]
7.6.2.3.1 General
7.6.2.3.2 Testing in accordance with ISO 8483
7.6.2.3.3 Testing in accordance with Annex A
7.6.3 Number of test pieces for type test purposes
7.6.4 Test pieces
7.6.5 Joint assembly details
7.6.6 Torque resistance
Annex A (normative) Test method for the resistance to bending and pressure of end-thrust loaded joints in pipe systems [Go to Page]
A.1 Principle
A.2 Apparatus [Go to Page]
A.2.1 End-sealing devices, of size and method appropriate to the pipe system under test and anchored to the test pipes according to the requirements of the test being carried out.
A.2.2 Straps or cradles, supporting the pipe barrel or outside diameter of the joint and fixed at appropriate positions to provide a bending load such that they do not restrain free movement of the ends.
A.2.3 Means of applying and measuring the required bending load, to an accuracy within ± 5 %.
A.2.4 Source of hydrostatic pressure, capable of applying the required pressure in the test piece.
A.2.5 Pressure measuring device, capable of measuring the positive pressures at the top of the pipe to an accuracy within ± 2 %.
A.3 Test pieces
A.4 Test temperature
A.5 Calculation of the bending load F [Go to Page]
A.5.1 General
A.5.2 Calculation of F, if applied in the horizontal plane
A.5.3 Calculation of F, if applied in the vertical plane
A.6 Procedure [Go to Page]
A.6.1 If the bending load is calculated in accordance with A.5.1, ensure that the test piece is supported the full length.
A.6.2 Fill the test piece with water and vent all entrapped air carefully.
A.6.3 Apply the bending load, F, determined in accordance with A.5.1 or A.5.2, as applicable.
A.6.4 Apply and maintain for 15 min a hydrostatic pressure of 1,5 times PN.
A.6.5 Reduce the pressure to atmospheric pressure.
A.6.6 Raise the internal pressure to 1,5 times PN and reduce again to atmospheric pressure; complete the cycle in 1,5 min to 3 min.
A.6.7 Repeat the cycle given in A.6.6 a further nine times.
A.6.8 During the test, inspect the joint and record any signs of leakage.
A.6.9 Depressurise, remove the bending load and inspect to the joint components and record any visible damage of the assembled joint.
A.7 Test report
Bibliography [Go to Page]

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BS EN 1796:2013 Plastics piping systems for water supply with or without pressure. Glass-reinforced thermosetting plastics (GRP) based on unsaturated polyester resin (UP), 2013

⨯To continue with accurate pricing,
please select your company type below: