Retrospectivity

From AS2885 INFO
Jump to navigation Jump to search

Retrospective application of AS 2885 is covered in Part 0, Clause 1.6.1. It does not require that existing physical assets be modified to meet the requirements of the latest edition. However:

  1. Modifications to an existing pipeline system must comply in full with the current edition of Part 1, even if the existing assets are not fully compliant.
  2. The operating and maintenance requirements of Part 3 apply to all pipelines, regardless of age.
  3. The safety management requirements of Part 6 apply to all pipelines to the extent that they are applicable, regardless of age; see particularly Part 6, Section 5.5.

Having said all that, Part 0 Clause 1.6.1 also encourages Licensees to identify opportunities for improvement of existing systems, such as may be suggested by the latest revision of AS 2885, and Part 3 requires Licensees to identify and rectify any condition that would compromise pipeline integrity.

Part 3 is undergoing revision (as at Oct 2020) and will probably include requirements for assessing the fracture resistance of existing pipelines, probably including a risk assessment of any non-conformance with current Part 1 fracture control requirements. However this is not the same as requiring that existing pipelines meet the current fracture control requirements of Part 1.

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

Part 1 Clause 1.5 states specifically that it has no retrospective requirements. And as noted above all pipelines regardless of age must comply with Part 3 and Part 6 (to the extent applicable).

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

Not exactly. A fracture control plan as defined by Part 1 will nominate pipe properties (toughness) that cannot be modified once the pipeline is built. As noted above it is likely that the revised Part 3 will require a fracture resistance assessment. Any action will depend on the outcome of that assessment and the level of risk.

(Peter Tuft)