BS ISO 4437-5:2014
$102.76
Plastics piping systems for the supply of gaseous fuels. Polyethylene (PE) – Fitness for purpose of the system
| Published By | Publication Date | Number of Pages |
| BSI | 2014 | 22 |
This part of ISO 4437 specifies the requirements of fitness for purpose of the polyethylene (PE) piping system to be used for the supply of gaseous fuels.
It specifies the definitions of electrofusion, socket fusion, butt fusion, and mechanical joints.
It specifies the method of preparation of test piece joints and the tests to be carried out on these joints for assessing the fitness for purpose of the system under normal and extreme conditions.
It specifies the test parameters for the test methods referred to in this part of ISO 4437.
In conjunction with ISO 4437-1, ISO 4437-2, ISO 4437-3, and ISO 4437-4, it is applicable to PE pipes, fittings, valves, their joints, and joints with components of PE and other materials intended to be used under the following conditions:
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the maximum operating pressure (MOP) is based on the design stress, determined from the compound minimum required strength (MRS) divided by the C factor, and taking into account rapid crack propagation (RCP) requirements;
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a temperature of 20 °C as reference temperature for the design basis.
NOTE 1 For other operating temperatures, derating coefficients are given in Annex A.
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.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 6 | Foreword |
| 7 | Introduction |
| 9 | Section sec_1 Section sec_2 1 Scope 2 Normative references |
| 10 | Section sec_3 Section sec_3.1 Section sec_4 Section sec_4.1 Section sec_4.1.1 3 Terms and definitions 4 Fitness for purpose of the system 4.1 Method of preparation of assemblies for testing |
| 11 | Section sec_4.1.2 Section sec_4.1.3 Section sec_4.1.4 Section sec_4.1.5 Section sec_4.2 Section sec_4.2.1 Section sec_4.2.2 Section sec_4.2.2.1 4.2 Requirements for fitness for purpose of the system |
| 12 | Table tab_1 Section sec_4.2.2.2 Table tab_2 |
| 13 | Section sec_4.2.3 Section sec_4.2.3.1 Table tab_3 Section sec_4.2.3.2 Table tab_4 |
| 14 | Section sec_4.2.4 Section sec_4.3 Section sec_4.4 Section sec_4.5 Section sec_5 4.3 Conditioning 4.4 Requirements 4.5 Retest in case of failure at 80 °C 5 Design coefficient |
| 15 | Table tab_5 |
| 16 | Table tab_6 |
| 17 | Annex sec_A Table tab_A.1 Annex A (informative) Derating coefficients for operating temperatures |
| 18 | Annex sec_B Annex B (normative) Rapid crack propagation (RCP) resistance of pipe at temperatureless than 0 °C |
| 19 | Reference ref_1 Reference ref_2 Reference ref_3 Reference ref_4 Bibliography |
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