Rilsan Polyamide-11 High Pressure Natural Gas Distribution Pipe

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1 Rilsan Polyamide-11 High Pressure Natural Gas Distribution Pipe Jim Mason Natural Gas Pipe Program Manager Arkema Inc. 900 First Avenue King of Prussia, PA

2 PA-11 Pipe vs. Steel Increased Safety More Value Lower Total Cost

3 Safer Than Steel Pipe NO Corrosion NO Cathodic Protection NO Maintenance Enhanced Reliability

4 Potential Applications Replace steel pipe up to 200 psig Bridge crossings Contaminated soil (liquid hydrocarbon) Horizontal directional drilling Pipe bursting Insertion renewal in old PE pipe

5 Outline Quick Review of PA-11 Piping System Test Installation Summary PA-11 DOT Petition Status Summary

(Birdsboro, PA since 1971) and in France since 1950 s Used in Sydney, Australia

6 Developed in late 1940 s. Commercialized in 1950 s Monomer is castor oil based Rilsan Polyamide 11 Made in USA (Birdsboro, PA since 1971) and in France since 1950 s Used in Sydney, Australia since the mid-1970 s to rehabilitate city manufactured gas distribution lines. Services less than 30 psi SDR Total of 15,000 miles installed

7 PA-11 Gas Piping History in USA First USA commercial use of PA-11 in gas distribution products (mechanical fittings) Initial Discussions with DOT-TSI Initial work with GRI to investigate PA-11 PA-11 added to ASTM D First trial installation on Nicor Gas property First of 6 complete PROW installations as requested by DOT Complete 2-inch piping system available All codes and standards in place Petitions submitted to amend Part 192

8 GTI Research Study Completed GTI has completed a three-year research study on the PA-11 piping system. Extensive study included joining procedures, squeeze-off, short-term properties and long-term properties Report consisting of three volumes summarizes all these data.

9 Worldwide Codes and Standards ASTM D 2513 Annex 5 CSA B ASTM F 1973 ASTM F 2145 ASTM F 1733 NFPA 54 ANSI Z380.1 NFPA 58 ASME B31.8 ISO PA material and pipe PA material and pipe PA anode-less risers and transition fittings Standard Specification for PA-11 Mechanical Fittings Specification for PA-11 butt fusion fittings National Fuel Gas Code GPTC Guide Material for PA-11 LP Gas Code Gas Distribution and Transmission Pressure Piping Code Task group formed for PA pipe and fittings Ballot issued in ISO/TC138

10 PA-11 Product Line Pipe sizes through 2 Butt fusion fittings Mechanical saddle fittings 2 Ball Valve Transition fittings - PA-11 to steel - PA-11 to PE Meter risers

11 Key Pipe Properties Resistance to Rapid Crack Propagation Slow Crack Growth Pressure Rating (MAOP)

12 Rapid Crack Propagation Based on Small Scale Steady State (S4) critical pressure at 0 o C = 80 psig, equivalent to a full scale critical pressure of 325 psig PA-11 may be used up to 325 psig with no RCP occurring. Arkema has initiated a project in ASTM F17.60 to add an S4 requirement to the PA annex in ASTM D Consistent with ISO rules. Operating pressure = Full Scale/1.5 For 2-inch SDR11: 217 psig

13 Slow Crack Growth No slow crack growth failures in 80 C stress rupture testing after 8000 hours PENT testing at 80 o C/350 psi stress showed no crack growth initiation GTI three-point bend sector testing at 70 o C/17 lb load showed no crack growth after 4000 hours

14 Hydrostatic Design Basis 73 o F 140 o F 180 o F PA psi 1600 psi 1250 psi MDPE 1250 psi 1000 psi Not rated HDPE 1600 psi 800 psi Not rated MAOP = 2 (HDB) (DF) SDR - 1 Also qualifies as PA160 in the ISO 9080 MRS system

15 MAOP for PA-11 Pipe SDR F 140 F 180 F DF = psig 102 psig 80 psig DF = psig 128 psig 100 psig MAOP = 2 (HDB) (DF) SDR - 1

16 Outline Update on PA-11 Piping System Test Installation Summary PA-11 DOT Petition Status Summary

17 USA Installation History Utility Motivation Pressure/Length Comments Status Nicor Gas Naperville, IL First Trial 150 psig/500 ft Private Property Complete 10/97 Nicor Gas Woodstock, IL First PROW Installation 150 psig /1 mile No hot tapping Complete 12/99 Atmos Energy Choctaux, LA Wet Environment 90 psig/500 ft No waiver required (<100 psig) Complete 2/02 Piedmont Gas Nashville, TN Rocky Soil Conditions 175 psig / 6000 ft Use 0.4 DF Service tees installed at line pressure Complete 4/03 Questar Delta, UT Cold Climate 200 psig /4000 ft Use 0.4 DF Maximum MAOP for SDR-11 pipe Complete 6/03 City of Mesa Mesa, AZ Hot/Dry Environment 102 psig / 800 ft Using HDB at 140 F, DF=0.32 Installation depth = 5 ft. Staged P increase Complete 6/04 PNM Lake Arthur, NM Hot/Dry 175 psig / 2.5 miles Use 0.4 DF 1000 ft coils Complete 11/04

18 PA-11 Installation Tools & Methods Same butt fusion equipment Same squeeze-off tools Same installation techniques and equipment

19 PNM Installation Near Lake Arthur, NM 2 SDR 11 coiled pipe First use of 1000-ft coils Operating at 175 psig with design factor = miles (13,000 ft) Installation completed 11/12/04 Customer is enthusiastic

20 First Use of 1000 ft. Coils

23 Pipe Was Laid Faster than Ditch Could be Dug

24 Standard Butt Fusion Equipment with Torque Wrench

25 Outline Update on PA-11 Piping System Test Installation Summary PA-11 DOT Petition Status Summary

26 Proposed Rule Making Initiatives (1/2) Proposed Rule Making Initiative #1 Allow use of PA-11 at pressures up to 200 psig Pipe design according to plastic pipe design equation in 49 CFR (HDB)(DF) MAOP = Limit diameter to 2-inch IPS SDR - 1 NPRM published for public comment in June of 2005 Final listing expected 1 st QTR 2005 Justification PA11 has twice the HDB rating as compared to PE. Resulting design pressure is twice that of PE with same SDR Successful long-term use of PA11 at higher operating pressures under state and federal waivers

27 Proposed Rule Making Initiatives (2/2) Proposed Rule Making Initiative #2 Allow the use of a 0.40 design factor within 49 CFR Part (HDB)(DF) MAOP = SDR NPRM published for public comment in June of 2005 Final listing expected 1 st QTR 2005 Justification Successful field trials in six states under waivers - 1

28 Why LDC s consider using PA-11 Improved Safety Resistant to Hydrocarbons Resistant to Corrosion Resistant to Crack Growth Lower Cost Quick installation using 2 x 1000 ft. coils Minimal maintenance Common procedures and techniques apply

29 Summary 6 Installations since 1997 Conventional installation methods apply Field aging studies indicate excellent retention of properties Complete 2-inch piping system is available now 2-inch electro-fusion couplings currently available 4 & 6-inch pipe in development Approval for Part 192 anticipated Q PA-11 provides cost savings compared to steel pipe.

30 PA-11 Pipe vs. Steel Increased Safety More Value Lower Total Cost

31 Participating Utilities and Suppliers Nicor Gas Nashville Gas Atmos Energy Questar Gas City of Mesa, AZ Public Service of New Mexico (PNM) Continental Industries R.W. Lyall and Co. George Fischer Sloane Kerotest Perfection Friatec/Ipex

What s New With Plastic Pipes?

What s New With Plastic Pipes? - An Overview Dr. Gene Palermo Palermo Plastics Pipe (P 3 ) Consulting www.plasticspipe.com New High Performance Bimodal PE Materials New PA-11 Material New RTP Composite