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Pvc pipes .ppt

  1. 1. What’s New with Plastic Piping
  2. 2. PPDC Information • Identifies pipe and fittings used in plastic piping systems • Explains historically known plastic piping issues • Identifies trends to assist with Integrity Management Programs 2
  3. 3. Background • Response to NTSB recommendation and database was a precondition to DOT not mandating collection • A national voluntary database of in- service performance of plastic piping systems • Database administered by AGA on behalf of PPDC 3
  4. 4. Plastic Piping Database Committee (PPDC) Government Members • NAPSR Representatives (2) • NARUC Representatives (2) • PHMSA/OPS Representatives (2) Industry Members • AGA Member Representatives (2) • APGA Member Representatives (2) • PPI Member Representatives (2) 4 12 Members • Up to 3 Invited Guests • 1 NTSB Liaison • AGA Observer(s)
  5. 5. Plastic Piping Database Committee (PPDC) • The scope of the committee has been expanded to include failures and/or leaks of metal or plastic components contained within plastic piping systems. • Immediate, clearly known, third party damages are not collected or evaluated. 5
  6. 6. Plastic Piping Database Committee (PPDC) • Reviews the data, at minimum, on a semi- annual basis* • Consensus agrees on areas of focus or concern • Issues Status Reports after each meeting • Provides resources to aid in identification of products and to assist operators with Integrity Management Programs * The PPDC currently meets 3 times per year. 6
  7. 7. Status of Participation • 114 companies actively submitted data in March 2015 • Names of active submitters are included in Appendix A of the Status Report • PPDC submitters represent these percentages of all installed plastic piping in the U.S. – 76% plastic main – 84% plastic services 7
  8. 8. Accuracy and Completeness of Data VERY IMPORTANT • Impacts the analysis and conclusions by PPDC • Needs full cooperation of participants to help resolve submitted data issues • Increasingly important with Integrity Management Programs 8
  9. 9. Manufacturers Database 9 Manufacturers of Plastic Piping Products - Pipe NOTE: Operators are required to install materials that meet current requirements Company Material Designation From To Size Range Comments Allied PE 3306/3406 1965/66 1972/73 1/2" CTS - 2" IPS Was also a resin producer and supplied the AC ultra high molecular pipe compound to several small pipe extruders including Yardley, Orangeburg, Endot and the Barrett Division of Allied (also an extruder of PVC pipe). Except for Endot, most of these producers/extruders have since gone out of business or have different names today. Pipe was very difficult to fuse. Amstan PE3306 Mid-late 1960s
  10. 10. Manufacturers Database 10 Manufacturers of Plastic Piping Products - Line Fittings NOTE: Operators are required to install materials that meet current requirements Company Material Designation From To Size Range Comments Georg Fischer Central Plastics Produced molded fittings for pipe producers PE 2406 ?? Present 1" IPS - 12" IPS Solid Yellow PE 3408 ?? Present 1" IPS - 12" IPS Solid Black CP Chemical Another name for Performance Pipe
  11. 11. Manufacturers Database 11 Manufacturers of Plastic Piping Products - Other fittings NOTE: Operators are required to install materials that meet current requirements Company Material Designation From To Size Range Comments AMP Dupont Zytel ST-801 1970's, stainless steel and nylon compression fitting. Technology purchased by Metcal in 1990; can be white in appearance. Dupont Zytel ST- 801 Nylon ?? ?? 1/2" CTS - 2" IPS Black with Stainless Steel compression ring. Nylon 66 Georg Fischer Central Plastics Electrofusion and heat fusion fittings, transition fittings, meter risers.
  12. 12. Manufacturers Database 12 Manufacturers of Plastic Piping Products - Valves NOTE: Operators are required to install materials that meet current requirements Company Material Designation From To Size Range Comments Georg Fisher Central Plastics Dresser Nylon 1991 Present 1/2" CTS - 1-1/4" CTS Style 475 Curb Valve Rilsan Friatec PE 3408 1985 1995 2" - 6" IPS Black body with white operating nut; ball valve
  13. 13. Summary of Database The database • Contains 14+ years of collected data – Over 45,000 data reports – More than two-5 year leak survey cycles – Within last 3 years size of database has doubled 13
  14. 14. Summary of Database • Status Report includes analysis of specific data – Failures/Leaks on newly installed pipe – ABS, PVC and PE leaks by component and cause – DuPont & Uponor – Century – PE 3306* – AMP* – Caps* – PVC* * added in 2014 14
  15. 15. Failure Causes for Pipe, Fittings and Joints 15
  16. 16. ABS Failures by Location 16 PHMSA 2013 Annual Report Data: 3,247 Miles of ABS Main PPDC active submitters have 260 Miles of ABS Main PHMSA annual report data downloaded 3/4/2015
  17. 17. ABS Failure Causes 17 Cause % of Al ABS Failures/Leaks Excessive Expansion/Contraction 2.2% Excessive External Earth Loading 4.3% Installation Error 21.7% Squeeze Off 2.2% Point Loading 0.0% Previous Impact 0.0% Unknown 45.7% Other 2.2% Cap 10.9% Not Recorded 4.3% Material Defect 2.2% Gopher/rodent/worm damage 0.0% Unknown - Not Excavated, Replaced 0.0% Unknown - Abandoned 4.3% Corrosion 0.0% Total 100.0%
  18. 18. PVC Failures by Location 18 PHMSA 2013 Annual Report Data: 12,024 Miles of PVC Main PPDC active submitters have 5,026 Miles of PVC Main PHMSA annual report data downloaded 3/4/2015
  19. 19. PVC Failure Causes 19 Cause % of All PVC Failures/Leaks Excessive Expansion/Contraction 2.9% Excessive External Earth Loading 11.7% Installation Error 31.1% Squeeze Off 0.3% Point Loading 3.0% Previous Impact 0.6% Unknown 6.6% Other 3.3% Cap 0.3% Not Recorded 8.6% Material Defect 31.5% Gopher/rodent/worm damage 0.0% Unknown - Not Excavated, Replaced 0.1% Unknown - Abandoned 0.0% Corrosion 0.2% Total 100.0%
  20. 20. PE Including DuPont & Uponor, Aldyl A 20 PHMSA 2013 Annual Report Data: 659,010 Miles of PE Main PPDC active submitters have 508,860 Miles of PE Main PHMSA annual report data downloaded 3/4/2015
  21. 21. PE Including DuPont & Uponor, Aldyl A, Causes 21 Cause % of All PE Failures/Leaks % of PE Less DuPont & Uponor Failures/Leaks % of PE Less DuPont & Uponor and Century Failures/Leaks Excessive Expansion/Contraction 0.4% 0.5% 0.5% Excessive External Earth Loading 6.9% 3.1% 3.1% Installation Error 29.1% 30.1% 30.3% Squeeze Off 1.7% 1.1% 1.1% Point Loading 7.0% 3.7% 3.8% Previous Impact 1.6% 2.4% 2.5% Unknown 12.1% 15.6% 15.7% Other 17.4% 10.2% 10.1% Cap 6.7% 10.0% 10.1% Not Recorded 2.9% 3.9% 4.0% Material Defect 11.3% 17.0% 16.6% Gopher/rodent/worm damage 0.4% 0.8% 0.8% Unknown - Not Excavated, Replaced 1.2% 1.2% 1.2% Unknown - Abandoned 0.1% 0.1% 0.1% Corrosion 1.1% 0.2% 0.2% Total 100.0% 100.0% 100.0%
  22. 22. DuPont & Uponor, Aldyl A 22 DuPont and Uponor, Aldyl A, piping is not identified as separate from other types of polyethylene in the PHMSA Annual Report information. However, the PPDC includes DuPont and Uponor as manufacturers – Aldyl A is approximately 50% of the database.
  23. 23. DuPont & Uponor, Aldyl A, Causes 23 Cause % of Total DuPont & Uponor Failures/ Leaks % of Total DuPont & Uponor Pipe Failures/ Leaks % of Total DuPont & Uponor Fitting Failures/ Leaks % of Total DuPont & Uponor Joint Failures/ Leaks Excessive Expansion/Contraction 0.4% 0.6% 0.2% 1.0% Excessive External Earth Loading 10.7% 17.3% 6.5% 9.8% Installation Error 25.5% 14.3% 25.6% 64.6% Squeeze Off 2.1% 5.6% 0.0% 0.1% Point Loading 8.8% 19.9% 1.4% 6.5% Previous Impact 0.8% 2.1% 0.1% 0.1% Unknown 9.4% 8.7% 9.0% 11.5% Other 24.9% 22.4% 30.1% 1.1% Cap 5.3% 0.0% 10.8% 0.0% Not Recorded 1.6% 2.0% 1.2% 2.5% Material Defect 7.5% 3.0% 12.3% 2.6% Gopher/rodent/worm damage 0.1% 0.2% 0.0% 0.0% Unknown - Not Excavated, Replaced 0.6% 1.6% 0.1% 0.2% Unknown - Abandoned 0.1% 0.2% 0.0% 0.0% Corrosion 2.1% 2.1% 2.8% 0.0% Total 100.0% 100.0% 100.0% 100.0%
  24. 24. DuPont & Uponor, Aldyl A, Failures by Year of Failure/Leak 24
  25. 25. DuPont & Uponor, Aldyl A, Failures by Year in Service 25
  26. 26. Century Failures 26
  27. 27. Century Failures by Cause 27 Cause % of All Century Failures/Leaks % of Century Pipe Failures/Leaks % of Century Fitting Failures/Leaks % of Century Joint Failures/Leaks Excessive Expansion/Contraction 0.0% 0.0% 0.0% 0.0% Excessive External Earth Loading 0.5% 0.8% 0.0% 0.0% Installation Error 20.1% 10.6% 26.9% 46.2% Squeeze Off 0.0% 0.0% 0.0% 0.0% Point Loading 1.4% 2.4% 0.0% 0.0% Previous Impact 0.5% 0.8% 0.0% 0.0% Unknown 5.9% 5.7% 7.5% 0.0% Other 20.1% 29.3% 6.0% 15.4% Cap 1.4% 0.0% 4.5% 0.0% Not Recorded 0.9% 0.0% 3.0% 0.0% Material Defect 49.3% 50.4% 52.2% 38.5% Gopher/rodent/worm damage 0.0% 0.0% 0.0% 0.0% Unknown - Not Excavated, Replaced 0.0% 0.0% 0.0% 0.0% Unknown - Abandoned 0.0% 0.0% 0.0% 0.0% Corrosion 0.0% 0.0% 0.0% 0.0% Total 100.0% 100.0% 100.0% 100.0%
  28. 28. PE 3306 Failures 28
  29. 29. PE 3306 Failures 29
  30. 30. PE 3306 Failures by Cause 30 Cause % of All PE 3306 Failures/Leaks % of PE 3306 Pipe Failures/Leaks % of PE 3306 Fitting Failures/Leaks % of PE 3306 Joint Failures/Leaks Excessive Expansion/Contraction 0.8% 0.7% 1.1% 0.0% Excessive External Earth Loading 7.7% 8.1% 4.4% 16.0% Installation Error 6.4% 1.5% 12.2% 40.0% Squeeze Off 25.1% 35.2% 2.2% 0.0% Point Loading 15.1% 20.1% 3.3% 4.0% Previous Impact 1.3% 1.8% 0.0% 0.0% Unknown 27.9% 24.5% 37.8% 24.0% Other 3.3% 3.3% 4.4% 0.0% Cap 0.8% 0.0% 3.3% 0.0% Not Recorded 2.3% 1.1% 5.6% 0.0% Material Defect 9.0% 3.3% 24.4% 16.0% Gopher/rodent/worm damage 0.0% 0.0% 0.0% 0.0% Unknown - Not Excavated, Replaced 0.3% 0.4% 0.0% 0.0% Unknown - Abandoned 0.0% 0.0% 0.0% 0.0% Corrosion 0.3% 0.0% 1.1% 0.0% Total 100.0% 100.0% 100.0% 100.0%
  31. 31. Cap Failures by Cause 31 Cause % of DuPont Cap Failures/Leaks % of Plexco Cap Failures/Leaks % of Other Manufacturer Cap Failures/Leaks Excessive Expansion/Contraction 0.1% 0.0% 0.4% Excessive External Earth Loading 0.3% 0.5% 0.1% Installation Error 16.3% 2.9% 38.5% Squeeze Off 0.2% 0.0% 0.0% Point Loading 0.0% 0.0% 0.1% Previous Impact 0.0% 0.0% 0.0% Unknown 1.8% 2.0% 0.7% Other 6.3% 9.4% 2.7% Cap 25.3% 32.7% 31.0% Not Recorded 1.4% 0.1% 2.3% Material Defect 47.9% 52.1% 23.4% Gopher/rodent/worm damage 0.0% 0.0% 0.0% Unknown - Not Excavated, Replaced 0.3% 0.0% 0.4% Unknown - Abandoned 0.0% 0.2% 0.4% Corrosion 0.1% 0.0% 0.0% Total 100.0% 100.0% 100.0%
  32. 32. Amp Failures 32
  33. 33. Amp Failures by Cause 33 Cause % of All AMP Failures/Leaks Excessive Expansion/Contraction 4.7% Excessive External Earth Loading 20.7% Installation Error 11.8% Squeeze Off 0.0% Point Loading 1.0% Previous Impact 0.0% Unknown 28.0% Other 2.8% Cap 0.0% Not Recorded 2.4% Material Defect 28.1% Gopher/rodent/worm damage 0.0% Unknown - Not Excavated, Replaced 0.0% Unknown - Abandoned 0.0% Corrosion 0.4% Total 100.0%
  34. 34. Examples of Questions Received by PPDC 34 • Question from NAPSR: What does the PPDC database show for Handley curb valves? Is there any trend in data since 2007? Are they still being manufactured? • Response from the PPDC: Handley represents less than 0.1% of the data submitted to the PPDC. The data does indicate an increasing trend of failures/leaks since 2007. Due to the small amount of data submitted, we suggest NAPSR encourage operators who have Handley curb valves in their plastic piping systems to submit data. Handley is not currently listed in the manufacturer database available on the PPDC website. However, Handley has a currently active website; and produces natural gas carrying components.
  35. 35. Examples of Questions Received by PPDC 35 • Question from AGA: Should Aldyl A and Century failure data still be submitted? • Response from the PPDC: Yes, additional data points support additional analysis.
  36. 36. What does this data mean to you? 192.1007 requires that an operator must demonstrate an understanding of its gas distribution system developed from reasonably available information • PPDC Status Report includes analysis of specific, nationwide, data – Failures/Leaks on newly installed pipe – ABS, PVC and PE leaks by component and cause – DuPont & Uponor – Century – AMP – 3306 – Manufacturers Database – Plastic Piping Timeline – PVC – Caps 36
  37. 37. What does this data mean to you? 192.1007 requires that an operator must consider reasonably available information to identify existing and potential threats. 5 historically known areas of concern are reflected in the PPDC database: • Century Utility Products polyethylene (PE) pipe produced from 1970 through 1974 • DuPont Aldyl® A low ductile inner wall PE pipe manufactured from 1970 through 1972 • PE pipe manufactured from PE 3306 resin such as Swanson, Orangeburg and Yardley • DuPont Aldyl® service punch tee with a white Delrin® polyacetal threaded insert • Plexco service tee with Celcon® polyacetal threaded cap 37
  38. 38. What does this data mean to you? For programs dealing with plastic piping concerns • PPDC Status Report includes analysis of specific data – ABS, PVC and PE leaks by component and cause – DuPont & Uponor – Century – PE 3306 – AMP fittings – Caps 38
  39. 39. How might States use the info? • States might use the list of active submitters to see which companies in their state are or are not participating • States might use the PPDC analysis publicly available to inquire whether those issues are relevant to a certain operator, and if so, what is being done about it in the context of DIMP • Responses to questions may also aid in determining what issues to expect 39
  40. 40. For more information, consult AGA’s website at http://www.aga.org/Kc/OperationsEngineering/ppdc/Page s/default.aspx Or Contact Kate Miller at (202) 824-7342; kmiller@aga.org Or Junaid Faruq at (202) 824-7342; jfaruq@aga.org 40
  41. 41. Questions? Thank you for your support of the Plastic Pipe Database Initiative 41

Notas del editor

  • Examples of information for IMP programs is included later in this presentation.
  • Through the end of 2014 there were two regularly scheduled guests: John Kasinski, from National Fuel and a past PMC chairman, representing gas companies and Greg Goble, from R.W. Lyall & CO. Inc., representing fitting manufacturers.
    For 2015 Greg continues as a regular guest.
    The roster is available on the PPDC website
  • The original scope of the data collection was for through-wall failures of plastic pipe and fittings. This was clarified to include failures and/or leaks on plastic piping systems and to include metal fittings used in a plastic piping system.
    Operators are encouraged to submit 3rd party damages to CGA’s DIRT. However, the PPDC does collect data on failures/leaks from 3rd party damages that occur sometime later.
  • PPDC has a formal definition of consensus. Each member agrees that the agreed upon point may not be their first choice but they can live with it.
  • Information in this presentation is from the PPDC’s March meeting data analysis.
  • Representatives from PPI on the PPDC are now responsible for the maintenance of the Excel File of the Manufacturers Database.
    This is an example of the pipe tab.
  • We need assistance filling in the missing information for historical data, in addition to assuring the accuracy of the contents of the file.
  • The PPDC has addressed historically known issues and is continuing to monitor that data while addressing emerging trends in the data.
  • The PPDC uses various methods to look at the data. This is an example of how the pipe, fittings and joints are analyzed.
  • PHMSA 2014 annual report data was not available when presentation was developed. Note download date of PHMSA report data.
  • The PMSA annual report data does not break out Aldyl A from other PE.
  • The PPDC report form does not separate Aldyl A from other types of PE. However, the PPDC can use the manufacturer information from DuPont & Uponor for Aldyl A analysis.
  • Century is one of the historically known issues. The PPDC data analysis for Century is included in an appendix of the Status Report.
  • PE 3306 is one of the materials specified on the PPDC report form.
  • While not a fitting type on the PPDC report form, many reports have been submitted with cap failures/leaks.
  • The PPDC noticed a number of failures/leaks of Amp fittings.
  • At each meeting, the PPDC asks representatives from each stakeholder group to bring forward any questions they have received. This is an example of a question from NAPSR that was addressed at the March meeting.
  • Yes, it is important to still submit reports about known issues. This helps the PPDC continue their analysis and perform additional analysis.
  • How can you use this information for DIMP?
  • I can take any questions to the next PPDC meeting (July 2015) and they will be included in the next Status Report.

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