The Evaluation of Pipe Performance and Durability  Stewart Burn CSIRO Urban Water Infrastructure Contact  [email_address]
Research Activity <ul><li>CSIRO – 6500 scientists across Australia </li></ul><ul><li>20+ working specifically on asset man...
Asset Management Components
Asset management strategies <ul><li>We consider the key Components of an Asset management strategy include </li></ul><ul><...
Asset management strategies
PVC Average failure rates (US/Canada)
PVC Average failure rates (Australia)
Statistical models <ul><li>Standard failure curves developed for particular material, diameter, length, pressure, soil env...
PVC pipes – CSIRO/AwwaRF <ul><li>Physical/probabilistic model predicts fracture failures in the field </li></ul><ul><li>Li...
Polyethylene (PE) pipes – CSIRO/AwwaRF <ul><li>Increased ductility of current PE materials renders conventional linear ela...
Asbestos Cement pipes - CSIRO <ul><li>Physical/Probabilistic model predicts degradation and loss of strength in the field ...
Cast Iron pipes – CSIRO <ul><li>Physical/Probabilistic model predicts corrosion penetration through pipe wall </li></ul><u...
Ductile Iron pipes – NRC/CSIRO/AwwaRF <ul><li>AwwaRf project in progress in collaboration with National Research Council, ...
Cement Mortar Lining (CML)  CSIRO/AwwaRF <ul><li>AwwaRf project in preparation to address the long term performance of Cem...
Condition Assessment – Pro-Active assets <ul><li>Failure models can be calibrated using non-destructive condition assessme...
Sewer Deterioration Models <ul><li>Deterioration models developed in EU CARE-S project with 15 partners </li></ul><ul><li>...
More Information <ul><li>CSIRO - Stewart.Burn@csiro.au </li></ul><ul><li>AwwaRf – Jian Zhang </li></ul><ul><li>WERF – Roy ...
Upcoming SlideShare
Loading in...5
×

CSIRO Manufacturing Science and Technology

442

Published on

0 Comments
0 Likes
Statistics
Notes
  • Be the first to comment

  • Be the first to like this

No Downloads
Views
Total Views
442
On Slideshare
0
From Embeds
0
Number of Embeds
1
Actions
Shares
0
Downloads
4
Comments
0
Likes
0
Embeds 0
No embeds

No notes for slide

CSIRO Manufacturing Science and Technology

  1. 1. The Evaluation of Pipe Performance and Durability Stewart Burn CSIRO Urban Water Infrastructure Contact [email_address]
  2. 2. Research Activity <ul><li>CSIRO – 6500 scientists across Australia </li></ul><ul><li>20+ working specifically on asset management of water systems </li></ul><ul><ul><li>Water - PARMS </li></ul></ul><ul><ul><li>Sewers - CARE-S </li></ul></ul><ul><li>Benefits from our Research </li></ul><ul><ul><li>Improved Asset Management – Risk Based System </li></ul></ul><ul><ul><li>Reduced Failures </li></ul></ul><ul><ul><li>Appropriate service at optimal cost </li></ul></ul><ul><ul><li>Some return from our investment to invest in further </li></ul></ul>
  3. 3. Asset Management Components
  4. 4. Asset management strategies <ul><li>We consider the key Components of an Asset management strategy include </li></ul><ul><li>A Risk based methodology based on </li></ul><ul><ul><li>Whole Life Costing methodologies to measure consequences </li></ul></ul><ul><ul><li>Models for predicting pipe failure </li></ul></ul><ul><ul><ul><li>Statistical Models </li></ul></ul></ul><ul><ul><ul><li>Physical/Probabilistic Models </li></ul></ul></ul>
  5. 5. Asset management strategies
  6. 6. PVC Average failure rates (US/Canada)
  7. 7. PVC Average failure rates (Australia)
  8. 8. Statistical models <ul><li>Standard failure curves developed for particular material, diameter, length, pressure, soil environment </li></ul><ul><li>7 Australian water authorities assessed with 50 years plus of data, 17 UK authorities now being assessed - UKWIR </li></ul><ul><li>Statistical Models Need tuning to each authority </li></ul><ul><li>Currently seeing if generic curves exist </li></ul><ul><li>Developing Physical/Probabilistic Models in conjunction with AwwaRf </li></ul>
  9. 9. PVC pipes – CSIRO/AwwaRF <ul><li>Physical/probabilistic model predicts fracture failures in the field </li></ul><ul><li>Linear Elastic Fracture Mechanics theory used to predict time to brittle fracture from pipe wall defects </li></ul><ul><li>Uncertainty in model variables accounted for using Monte Carlo simulations </li></ul>
  10. 10. Polyethylene (PE) pipes – CSIRO/AwwaRF <ul><li>Increased ductility of current PE materials renders conventional linear elastic fracture mechanics theory invalid </li></ul><ul><li>The historical development of different PE grades adds further complication </li></ul><ul><li>Physical/Probabilistic failure model in progress and is supported by statistical models based on recorded failure data </li></ul>
  11. 11. Asbestos Cement pipes - CSIRO <ul><li>Physical/Probabilistic model predicts degradation and loss of strength in the field </li></ul><ul><li>Failure predicted to occur under critical combined internal pressure and external loading </li></ul><ul><li>Uncertainty in key variables accounted for by Monte Carlo simulation methods </li></ul>
  12. 12. Cast Iron pipes – CSIRO <ul><li>Physical/Probabilistic model predicts corrosion penetration through pipe wall </li></ul><ul><li>Failure predicted to occur under combined internal pressure and external loading at critical corrosion pit depth </li></ul><ul><li>Uncertainty in key variables accounted for by Monte Carlo simulation methods </li></ul><ul><li>Large volumes of historical failure data also allows statistical models to be developed </li></ul>Statistical Physical prob.
  13. 13. Ductile Iron pipes – NRC/CSIRO/AwwaRF <ul><li>AwwaRf project in progress in collaboration with National Research Council, Canada </li></ul><ul><li>Will develop service life prediction models for Ductile Iron pipe </li></ul><ul><li>In-situ monitoring of corrosion damage in relation to soil electrochemical properties </li></ul><ul><li>Statistical methods used to extrapolate measured corrosion damage to longer lengths of pipeline </li></ul><ul><li>Physical/Probabilistic model to predict corrosion failure in different soil environments </li></ul>
  14. 14. Cement Mortar Lining (CML) CSIRO/AwwaRF <ul><li>AwwaRf project in preparation to address the long term performance of Cement Mortar Linings in Cast and Ductile Iron pipes </li></ul><ul><li>Industry and literature surveys to identify field failure modes in CML </li></ul><ul><li>Quantify the interactions between water quality parameters and CML failure </li></ul><ul><li>Develop accelerated test methods for modelling CML degradation </li></ul><ul><li>Physical/Probabilistic model to predict failure under different operating conditions and water quality conditions </li></ul>
  15. 15. Condition Assessment – Pro-Active assets <ul><li>Failure models can be calibrated using non-destructive condition assessment techniques </li></ul><ul><li>Electromagnetic tools available to measure corrosion pit depth in metallic pipes </li></ul><ul><li>Research effort towards the development of condition assessment tools for non-metallics (cement, plastics) </li></ul>
  16. 16. Sewer Deterioration Models <ul><li>Deterioration models developed in EU CARE-S project with 15 partners </li></ul><ul><li>Models developed for </li></ul><ul><li>Structural Collapse </li></ul><ul><li>In/Ex Filtration </li></ul><ul><li>Blockages </li></ul><ul><ul><li>Siltation </li></ul></ul><ul><ul><li>Root intrusion </li></ul></ul>
  17. 17. More Information <ul><li>CSIRO - Stewart.Burn@csiro.au </li></ul><ul><li>AwwaRf – Jian Zhang </li></ul><ul><li>WERF – Roy Ramani </li></ul><ul><li>CARE-S - Sveinung Saegrov </li></ul><ul><li>http://www.csiro.au </li></ul><ul><li>http://www.cmit.csiro.au/research/urbanwater/mouws/ </li></ul>
  1. A particular slide catching your eye?

    Clipping is a handy way to collect important slides you want to go back to later.

×