Comparison of Procedures in PPI TR-33 and ASTM F2620-13 · 2015. 5. 29. · PPI TR-33 •2006 PPI...
Transcript of Comparison of Procedures in PPI TR-33 and ASTM F2620-13 · 2015. 5. 29. · PPI TR-33 •2006 PPI...
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Comparison of Procedures PPI TR-33 and ASTM F2620
AGA Operations ConferenceMay 20, 2015
Jim Johnston
Chief Innovation Officer
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Standardization
The process of developing and implementing technical standards. Standardization can help to maximize compatibility, interoperability, safety,repeatability, or quality.
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• PE is a very forgiving material with a wide window of acceptable fusion.
• Globally, procedures range from interfacial pressures 21.7 psi up to 150 psi
• Butt Fusion Heater Surface temperatures range from 400 - 500° F
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PPI TR-33
• SECTION I – GENERIC BUTT FUSION PROCEDURE TESTING FOR FIELD JOINING OF ASTM D2513 GAS PIPING MATERIALS
• SECTION II – GENERIC BUTT FUSION PROCEDURE TESTING FOR FIELD JOINING OF ASTM F714, ASTM D3035, AWWA C-901, AWWA C-906 AND PE PIPING FOR OTHER APPLICATIONS
• SECTION III – BUTT FUSION PROCEDURE TESTING FOR FIELD BUTT FUSION OF PE 4710 PIPE FOR ALL APPLICATIONS.
• APPENDIX A - Generic Butt Fusion Joining Procedure for Field Joining PE (Polyethylene) Pipe
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PPI TR-33
• 1994 US DOT contacted the Plastic Pipe Institute® (PPI)
– Proliferation of similar but varying procedures from pipe procedures.
– Difficult for operators to qualify personnel
Source: PPI TR-33
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PPI TR-33
• PPI established a task group including:– Performance Pipe
– PolyPipe Central Plastics US Poly
– Charter Plastics
– BP Solvay
– Total Petrochemicals
– KWH Pipe
– McElroy Manufacturing
– Connectra Fusion Technologies, LLC Source: PPI TR-33
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PPI TR-33
• October 1999 PPI Published Section I: Generic Butt Fusion Procedure Testing for Field Joining of ASTM D2513 Gas Piping Materials
– All testing done using procedure in Appendix A
Heater Surface temperature 400 - 450° F
Interfacial Pressure 60-90 psi
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ASTM F2620
• 2006 ASTM F2620 was published using the testing in TR-33 as its technical basis.
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PPI TR-33
• 2006 PPI Published Section II: Generic Butt Fusion Procedure Testing for Field Joining Of ASTM F714, ASTM D3035, AWWA C-901, AWWA C-906 and PE Piping for Other Applications.
– All testing done using procedure in Appendix A
– Introduced holding the pipe under pressure until indication of melt is seen.
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PPI TR-33
• 2012 PPI Published Section III: Butt Fusion Procedure Testing For Field Butt Fusion Of PE 4710 Pipe For All Applications.
– All testing done per F2620
– Added min soak time for 14” and larger
– Established Maximum open/close (dwell) time
– Changed cooling time basis to wall thickness
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Fusion Process
• Secure
• Face
• Align
• Melt (Heat)
• Join (Fuse)
• Hold (Cool)
• Inspect
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Fusion Process
• Secure
• Face
• Align
• Melt (Heat)
• Join (Fuse)
• Hold (cool)
• Inspect
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MeltMinimum Bead Size
Pipe Size (IPS) TR33 F2620
1 ¼” and smaller 1/32” – 1/16” --
< 2" -- 1/32"
Above 1 ¼” through 3” About 1/16” --
>2" through 3" -- 1/16"
Above 3” through 8” 1/8”-3/16” 3/16"
Above 8” through 12” 3/16”-1/4” 1/4"
Above 12” through 24” 1/4”-7/16” 3/8"
Above 24” through 36” About 7/16” 7/16"
Above 36” through 63” About 9/16” 9/16"
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MeltMinimum Soak Time
Pipe Size (IPS) TR33 F2620
less than 14” IPS None None
14”IPS and larger - 4.5 minutes / inch wall thickness
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Fusion Process
• Secure
• Face
• Align
• Melt (Heat)
• Join (Fuse)
• Hold (cool)
• Inspect
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Hold (Cool)Minimum Cool Time
TR-33 The fusion force should be held between the pipe ends for approximately 30-90 seconds per inch of pipe diameter or until the surface of the melt bead is cool to the touch.
F2620 Maintain fusion pressure against the piping component ends for a minimum of 11 minutes per inch (25.4mm) of pipe wall.
Source: ASTM F2620-13, PPI TR-33
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Hold (Cool)Minimum Cool Time
IPS Pipe
size OD 30s 60s 90s
DR11
Cooling
Time
2 2.37 0:01:11 0:02:22 0:03:33 0:02:22
4 4.5 0:02:15 0:04:30 0:06:45 0:04:30
6 6.63 0:03:18 0:06:37 0:09:56 0:06:37
8 8.63 0:04:18 0:08:37 0:12:56 0:08:37
10 10.75 0:05:22 0:10:44 0:16:07 0:10:45
12 12.75 0:06:22 0:12:45 0:19:07 0:12:45
14 14 0:07:00 0:14:00 0:21:00 0:14:00
16 16 0:08:00 0:16:00 0:24:00 0:16:00
18 18 0:09:00 0:18:00 0:27:00 0:18:00
20 20 0:10:00 0:20:00 0:30:00 0:20:00
TR33 Cooling F2620
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Hold (Cool)Minimum Cool Time
IPS Pipe
size OD 30s 60s 90s
DR7
Cooling
Time
DR7.3
Cooling
Time
DR9
Cooling
Time
DR9.3
Cooling
Time
DR11
Cooling
Time
DR13.5
Cooling
Time
2 2.37 0:01:11 0:02:22 0:03:33 0:03:43 0:03:34 0:02:53 0:02:48 0:02:22 0:01:55
4 4.5 0:02:15 0:04:30 0:06:45 0:07:04 0:06:46 0:05:30 0:05:19 0:04:30 0:03:40
6 6.63 0:03:18 0:06:37 0:09:56 0:10:25 0:09:59 0:08:06 0:07:50 0:06:37 0:05:24
8 8.63 0:04:18 0:08:37 0:12:56 0:13:33 0:13:00 0:10:32 0:10:12 0:08:37 0:07:01
10 10.75 0:05:22 0:10:44 0:16:07 0:16:53 0:16:11 0:13:08 0:12:42 0:10:45 0:08:45
12 12.75 0:06:22 0:12:45 0:19:07 0:20:02 0:19:12 0:15:35 0:15:04 0:12:45 0:10:23
14 14 0:07:00 0:14:00 0:21:00 0:22:00 0:21:05 0:17:06 0:16:33 0:14:00 0:11:24
16 16 0:08:00 0:16:00 0:24:00 0:25:08 0:24:06 0:19:33 0:18:55 0:16:00 0:13:02
18 18 0:09:00 0:18:00 0:27:00 0:28:17 0:27:07 0:22:00 0:21:17 0:18:00 0:14:40
20 20 0:10:00 0:20:00 0:30:00 0:31:25 0:30:08 0:24:26 0:23:39 0:20:00 0:16:17
TR33 Cooling F2620
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Fusion Process
• Secure
• Face
• Align
• Melt (Heat)
• Join (Fuse)
• Hold (cool)
• Inspect
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Inspect
• Material differences
– Unimodal/bimodal
– Medium density/high density/legacy materials
• Bead appearance (shape) is changing
• Inspection procedures?
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Source: PPI TR-33
Inspect
TR-33
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Inspect
F2620
Source: ASTM F2620-13
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Inspect
F2620
Source: ASTM F2620-13
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Conclusions
• Polyethylene is a very forgiving material and many standards exist for safe and effective fusion.
• Harmonization of standards used will help with training continuity.
• PE materials continue to improve and processes should adapt to those changes.
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Questions?