QUESTIONS FROM 2019 LAUNCH: NEEDING ANSWERS

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The questions below have not yet been answered:


Q: 2012 version did not require min toughness below 85 MPa. is the addition of the 27 J min below 85 MPa for good practice or did new evidence prompt this change?

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Q: Is performing DWTT on small diameter pipelines such as DN150 going to be an issue?

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Q: Why contrary to Cl. 3.3.2, AS 2885.1 is less conservative than API5L regarding CVN on the weld seam? API5L requires 27J on the weld seam on pipes < 56 (check Cl. reference, does not reference clearly)

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Q: In relation to a comment relating to weld-seams having lesser toughness, would Seamless Pipe provide better arrest of propagation?

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Q: Are there any other AS 2885 retrospective requirements besides the upcoming fracture control requirements in AS 2885.3?

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Q: Is a retrospective fracture control plan required for all pipelines designed before 2007 in the new revision of AS2885?

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Q: What are the preferable methods for repairs of pipelines with brittle and ductile materials respectively?

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Q: Retrospective fracture control: is PRCI L51691 an acceptable tool for brittle & ductile fracture for lines that historically didn't need fracture plans (liquids)

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Q: Please explain why a DN600 pipe operating at a hoop stress of less than 85 MPa will require brittle fracture to be controlled?

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Q: What prompted the change from 100J to 150J as the cutoff for the requirement on expert validation of the fracture control plans?

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Q: Please provide an overview of changes made to the Station Design section of AS2885.1 and some of the comments made on this section?

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Q: Regarding collaboration / info sharing: have you looked to the airline industry and how they rapidly distribute safety / technical alerts?

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Q: Can’t we as industry work together and develop materials property database by sharing with each other ?

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