QUESTIONS FROM PARTS 0/1/6 LAUNCH - MARCH 2019

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General - Mostly Part 0

Defined Terms

Are definitions in line with both Regulator and Legal Counsel? Were these tested?

If a “defined term” conflict currently occurs while we’re waiting on the latest 2885 part releases, which standard should take precedence?

Should there be a definition for Pipeline Failure (e.g. loss of containment including lead or rupture)

What is the extent of pipeline easements from homes. Some pipelines are running through driveways of new estates

By definition, defect is rejectable flaw. Is it still repairable?


Regulation 

Does common law apply even when standards aren't in force yet? If most in industry comply with the standard?

What is the guideline, if the pipeline is passing 2 states and in a particular subject regulation of each state are not the same also are different with AS2885?


Licensee 

Application to licenced vs unlicensed pipelines?

Licensee that may be a group of entities that own the pipeline. Who is responsible licensee? Who is approver?

Can a secondee be a company officer and act as a licensee and/or approver?


Hydrogen 

With the recent announcements regarding national hydrogen roadmaps, will AS 2885 incorporate ASME B31.12 requirements for hydrogen transportation?

Would Hydrogen pipelines include liquid with partial pressure > 7barg? Low pressure surge?


Revisions to Standards 

Does release of Part 6 trigger an "immediate" SMS requirement, or does the licensee continue to meet its current 5-yearly obligation?

Is there a plan to integrate the APGA COP for HDPE pipelines with the AS2885 suite, as many elements of AS2885 are applicable, notwithstanding materials.

The previous version was released in 2012, what was the need of reviewing the version and starting the process in 2013 by recruiting committee.

Could testing of pipe be mandated through the standard to ensure that we build up our knowledge base? (I.e on projects larger than $20 million)

Peter Owbridge - Should ‘rejection’ not require feedback? Realise difficult but insurmountable? Feedback not required on accepted and/or modified changes

Should part 6 be called Pipeline ‘System’ Management by definition


Design Topics - mostly Part 1

Pipeline vs Piping  

Could AS2885 define pipeline vs station piping based on pipe length?

Fracture Control  

Should supply disruption be considered when developing a fracture control plan? E.g. time to repair long fracture in R1 may mean shorter arrest required?

Damage Resistance  

Should destructive testing for puncture resistance be mandated for new pipelines?

Pipeline Assemblies 

Is an MLV a “station” per Part 0 diagram?


Critical Defect Length (CDL) 

No Rupture: for new pipelines you design for 1.5xCDL - OK. But for assessing existing pipelines, shouldn't having min hole size > CDL satisfy no rupture?

If the equivalent hole diameter was previously used for defect length assessment rather than the base length, should the pipeline be retrospectively assessed?


0.8 Design Factor  

Is the new code suggesting that 0.8 design factor is now really not recommended (Appendix B)


Transient Pressures 

Has ‘surge’ been emphasised in System Design?


Pipe Material - non-steel 

Does any part of AS2885 apply to HDPE pipelines?

What sort of guidance is available in the standard for using high pressure ‘composite’ pipelines? Can clients use these pipelines?


Fatigue  

Please elaborate on the pressure test requirements in Appendix J2.1


Road Crossings  

Would the use of standard wall line pipe be ok at road crossings under the new stress rules for a new PL or should it be eliminated as not ALARP during SMS?

Isolation Plan 

The requirement in the Isolation Plan section has changed from “automatic failure detection” to “automatic leak detection” on liquid pipelines; is this a deliberate change?

Pipeline Safety - mostly Part 6

"SMS" vs "Risk Assessment" 

What is the difference between SMS and RA?


AS2885 SMS Risk Matrix 

Are we allowed to use a company specific risk matrix if it is more conservative than the AS 2885 risk matrix for SMSs?

If there are three or more people within the measurement length, and you have applied engineering and procedural controls, but you have not eliminated the hazard. So isn't it difficult to reduce the "high" assessment for risk?" (question has been revised/clarified)

What is the Regulators preference when it comes to Qualitative/ semi quantitative vs Quantitative Risk Assessments?


Location Classification 

Land Classifications: any thoughts on aligning PLC/SLC with state planning scheme zones? This will aid current works with councils to manage developments


Secondary Location Classes  

Is “C” coupled to “S” for exposure within measurement length?

What is the difference between secondary location classes "E" (Environmental) and S (Sensitive)?

Would a water course used for drinking water, be assessed as Secondary Location Class "E", or "S"?

Q: Medium-sized compressor stations witihin measurement lengths are now not considered as "HI" (Heavy Industrial) Secondary Location Class in AS 2885.6?


External Interference Protection 

Has anyone tested or reviewed the adequacy of plastic overpipe protection slabbing?

Does AS 2885 plan to recognise plastic slabs as a mean of physical protection?

The standard again takes account of the use of excavators and impacts on pipelines. Has HDD damage also received the same attention?

Penetration testing - what effect would the pressure in the pipe have, vs testing on an empty pipe?



Consequence Assessments 

Have there been any fatalities from non ignited loss of containment events?

Would you consider asset damage in the same category as risk to people where there is no fatality and no loss of supply?

Excavator penetration and leak consequence assessment within different location classes e.g. it T1 verses R2. Major verses Catastrophic assessment?

Shouldn’t the ‘supply’ consequence be a commercial decision by the licensee and not be dictated by the standard?


High Consequence Recognition 

What is a regulators view on sufficient evidence that a licensee is aware of high consequence and has adequate controls in place? Seems open to interpretation.

How does High consequence area recognition differ from "all controls fail" testing?


ALARP 

Is AS2885 ALARP in line with SFAIRP?

Are there issues with the ESV As Far As Practicable (AFAP) as opposed to ALARP?

Is the ALARP follow the risk management direction in ISO 31000 - 2018?


Effectiveness of Controls 

Did the part 6 Committee consider a control assessment matrix based on (a) Reduction of severity and/or Freq and (b) how well it's implemented to get a rating

What are some ways that control effectiveness can be demonstrated? Would this be evidence based?

please clarify to what extent that Part 1 is still valid for existing pipelines eg benchmarking validity of threat controls


Threats Assessment 

Is the credibility of a threat assessed considering the control measures in place or without control measures?

How low should a frequency get to go from hypothetical to controlled?

When is the threat non credible verses an assessment of hypothetical as both appear to point to a similar likelihood description?

What does practical purpose mean for non credible and controlled threats? Some facilitators make it seem like there has to be no further threat.

Does the "strong recommendation" for additional reasonably practicable controls to be implemented on low risks require an ALARP or CBA to demonstrate?

Farmers have started using deep rippers that turns soil to 1000mm with 800hp tractors. Would AS consider future increases in DOC for broadacre locations?

What replaces ‘encroachment’ outside of corridor in a notified zone for “S” activities that affect public safety?

To satisfy no rupture, how can a licensee say that an xxT digger with TT is the largest credible threat when really any sized digger could turn up unannounced?


One-Call Services 

Is use 'One Call' System, as part of the Standard, a voluntary control or mandated? Some state regulations do not have 'One Call' mandated.


Other

When does part 4 come into play in design? Flood plains, wide river crossings, offshore say TGP is it based on length submerged?

  • Answer: (James Czornohalan) Part 4 is really for offshore (i,e. undersea) pipelines. Floodplains and river crossings are the realm of part 1.


If specifying non-puncture pipe why does the code require location classification to consider a full bore rupture measurement length? (Chris Austin)

  • Answer: (James Czornohalan) Measurement length is used to determine location class - and it is location class that would lead you to no-rupture pipe. It's worth remembering no-rupture is only no rupture against the threats we have thought of and designed against. There will still be a way (and it may be really really unlikely) for it to rupture.