APGACodeofPractice,changesinV5Section3MaterialsandComponentsBrisbaneAugust,2019.

Alan Whittle – Section3MaterialsandComponents

Title of the document is unchanged: •  ‘Code of Practice Upstream Polyethylene

Gathering Networks – CSG Industry’

Title of Section 3 is unchanged: •  ‘Materials and Components’

Section3MaterialsandComponentsandCP-03-001Clause 3.1 General A note has been added directing the reader to the companion papers for further information about PE100 and related polyethylenes. NOTE: Further information about PE100 and related polyethylenes is available in the relevant Companion Papers.

Section3MaterialsandComponentsandCP-03-001Companion paper CP-03-001 PE Material selection and quality. Published August 2018. Largely based on Appendix C of V3. The CP is still relevant and whilst it deals primarily with PE100 it also makes reference to: •  PE-X •  PE-RT •  PE100 HSCR (PE100RC) •  PE-O

Section3MaterialsandComponentsandCP-03-001

•  PE100 Ref. AS/NZS 4131 •  Minimum required strength of 10 MPa at 50 y and 20°C •  Resistance to slow crack growth •  Thermal stability •  Resistance to rapid crack propagation

•  CP-03-001 describes •  Polymer manufacture including pre-compounding •  Manufacturing processes •  Quality and traceability procedures

Section3MaterialsandComponentsandCP-03-001CP-03-001 provides a brief description of: •  PE100HSCR (PE100RC)

Ref. AS/NZS 4131 and POP016 Enhanced resistance to slow crack growth •  PE-RT

Ref. ISO 15494 Enhanced long-term performance at elevated temperatures

•  PE-X Ref. ISO 15494 Enhanced performance at elevated temperatures

•  PE-O Monocomposite pipes with intermediate layer of oriented PE (proprietary products)

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Clause 3.2 Qualification of materials and components •  Two NOTES added:

•  Information regarding the life expectancy of elastomeric seals, for example integral hot tap fittings and ball valve stems, should be sought from the supplier.

•  The service life of adhesives, for example those used to seal threaded cap fittings associated with some hot tap drill caps, should be sought from the supplier.

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Clause 3.3 Compound The NOTE has been changed to state that PIPA POP004 now indicates whether materials listed have also be shown to satisfy the temperature rerating requirements of PIPA POP013. •  Materials not listed as complying might nevertheless meet the requirements of

POP013, but the data has not been assessed by PIPA’s expert panel. An alternate procedure for assessing compliance with the POP013 temperature rerating would need to be applied.

Section3MaterialsandComponentsClause 3.3.2 Fittings •  3.3.2.1 Marking

The text has been changed slightly to address what appeared to be duplicate/ conflicting requirements in V4 and V4S. The marking requirements for fittings are now aligned with international practice.

•  3.3.2.2 Rating requirements for fittings An example has been included to illustrate how to adjust the pressure rating of ISO 4437 PE fittings for fuel gas applications given that Standard uses a design coefficient of 2.0 whereas the CoP applies a value of 1.25.

Section3MaterialsandComponentsClause 3.3.2 Fittings The following have been relocated from Section 6 to Section 3. •  3.3.2.5 Mechanical compression fittings

Now required to be third party certified. •  3.3.2.6 Mechanical couplings

Expanded to include a reference to WIS 4-24-01 Type 2 (Specification for mechanical fittings and joints for polyethylene pipes for nominal sizes 90 to 1000) and ISO 14236.

•  3.3.2.7 Backing flanges with reference to PIPA POP007 and relevant Standards.

Section3MaterialsandComponentsClause 3.4.2 Pressure rating of valves An example has been included to demonstrate how, using a design factor of 1.25, to reassign the pressure rating to a valve originally rated in accordance with ISO 4437 using a design factor of 2.0. Clause 3.4.3 Industrial thermoplastic valves The appropriate ISO Standards for are now listed. •  ball valves, •  butterfly valves, •  check valves, •  diaphragm valves, •  gate valves and •  globe valves

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Clause 3.6.2 Storage and transportation

Storage in direct sunlight has been clarified so that extended exposed storage periods beyond two years are restricted to plain black pipes. Previously it might have been assumed extended exposed storage could be acceptable for black pipes albeit with coloured stripes.

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