HDPE and Nuclear Power Piping SystemsISO 4427 to ASME/PE4710 • Gap analysis audit per ASME •...
Transcript of HDPE and Nuclear Power Piping SystemsISO 4427 to ASME/PE4710 • Gap analysis audit per ASME •...
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HDPE and Nuclear Power Piping Systems
Review of the Barakah Nuclear Power Plant’s use of HDPE pipe in an ASME Section III, Class 3 Installation
Shane R. SchuesslerISCO Industries, Inc.Louisville, Kentucky
Ali Al HammadiEmirates Nuclear Energy Corporation
Abu Dhabi, UAE
Mohamed Ali Awadh JaberBorouge PTE
Abu Dhabi, UAE
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• Barakah Nuclear Power Plant• ESW Piping System & Design • American Society of Mechanical Engineers (ASME)• Materials• Project Challenges • Installation and Testing
DISCUSSION TOPICS
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• Emirates Nuclear Energy Corporation• Located 300km West of Abu Dhabi,
UAE • Consists of four – KEPCO APR1400
units• Construction on Unit 1 began in 2012• $24.4B (USD)• Currently at 90+% completion
BARAKAH NUCLEAR POWER PLANT
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Photo Courtesy of ENEC
BARAKAH NUCLEAR POWER PLANT
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BARAKAH NUCLEAR POWER PLANT
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BARAKAH ESSENTIAL SERVICE WATER DISCHARGE SYSTEM
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The Essential Service Water System (ESW) is designed to provide a source of cooling water to multiple heat exchangers required for the safe shutdown of the reactor following an event.
Safety Related Systems are relied upon to remain functional during andfollowing design basis events.
Barakah Essential Service Water System
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• ESW supplies water for cooling of Component Cooling Water heat exchangers
• 8 trains = 21,000 feet (6,480 meters) of pipe for discharge• Procured and constructed in accordance to ASME BPVC Section III,
Subsection ND, Safety Class 3
Barakah Essential Service Water System
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• Desired Design/Service Life = 60 years• Burial Depth = 33 feet (10 meters)• Maximum Ground Temp = 95°F (35°C)• Aggressive native soils • Design Fluid Temperatures = 52.5°F (11.4°C) through 140°F (60°C)• Design Pressure = 30 psig (207kPa)• System design conducted by ASME N-type Certificate holder• Piping materials considered: Coated PCCP and HDPE
Barakah Essential Service Water System
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• Desired Design/Service Life = 60 years• Burial Depth = 33 feet (10 meters)• Maximum Ground Temp = 95°F (35°C)• Aggressive native soils • Design Fluid Temperatures = 52.5°F (11.4°C) through 140°F (60°C)• Design Pressure = 30 psig (207kPa)• System design conducted by ASME N-type Certificate holder• Piping materials considered: Coated PCCP and HDPE
Barakah Essential Service Water System
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• Service life expectations• Hydraulic efficiency• Joint reliability• Seismic design• Installation concerns• HDPE chosen for ESW Discharge System
PCCP
HDPE
Material Selection: PCCP vs HDPE
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• Boiler & Pressure Vessel Code: Section III – Rules for Construction of Nuclear Facility Components
• Subsection ND, Class 3 Piping Systems• Code Case N-755• N-type Certificates
American Society of Mechanical Engineers (ASME)
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• Resin to meet ASME Code Case N-755-1 • Plastic Pipe Institute TR-4 Permanent Listing• PE4710 • 2000 hour PENT
• UAE based resin producer selected• ISO 4427 to ASME/PE4710• Gap analysis audit per ASME• Bimodal pre-compounded resin• Superior sagging performance• Surveillance from production to packaging
Photo Courtesy of UPI
ASME Nuclear HDPE Materials
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• 36-Inch DR 17 HDPE pipe per design conditions
• UAE based pipe extruder selected• Testing – lot specific• Surveillance
Photos Courtesy of UPI
ASME Nuclear HDPE Pipe
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• 36-Inch DR 13.5 feedstock for fabricated elbows (1.22X)
• Feedstock extruded in UAE –shipped to USA
• Elbows produced under ASME NPT
• Welders qualified per N-755-1 Mandatory App. I
• Fitting ends counter-bored• Volumetric examination (PAUT)
ASME Nuclear HDPE Elbows
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• NDE• Phased Array Ultrasonic Testing• No industry developed
acceptance criteria• Field exams performed at night
Side View
Scan Direction
End View
Photos Courtesy of Structural Integrity Associates
Volumetric Examination
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• Connections at Hx buildings• Manufactured in the USA• Void free• Backing rings made from
ASME SA516 Grade 70 steel plate used
Photos courtesy of GFCP
ASME Nuclear HDPE Flanges
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• First of Kind Project• Geography• HDPE Code implementation• Supply Chain• Climate/Field Conditions
Photo Courtesy of ENEC
Project Challenges
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• Installed by ASME NA Certificate holder
• Challenges:• ASME site survey• 115°F (46°C) • Sand• Non-destructive examination (NDE)
• N-755-1 only allows for butt fusion welds Photo Courtesy of ISCO
Barakah ESW Discharge System Installation
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• Fusion procedure qualification: • 20 samples• High Speed Tensile Impact Testing• Elevated-Temperature Sustained-
Pressure Testing• Operator qualification
• 2 weld samples each• Free bend test
• Joint data recorder
Photo Courtesy of ENEC
Photos Courtesy of McElroy Mfg.
Barakah ESW Discharge System Installation
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• Hydrostatic Pressure Testing per N-755-1• Joints exposed • 4-hour initial pressurization• 1-hour test• Pass if within 5% of test pressure & no visible
leaks• Performed at night
Photo Courtesy of ENEC
Barakah ESW Discharge System Installation
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Photo Courtesy of ENEC
Barakah ESW Discharge System
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Photos Courtesy of ENEC
Barakah ESW Discharge System
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Photo Courtesy of ENEC
Barakah ESW Discharge System
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Photo Courtesy of ENEC
Barakah ESW Discharge System
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Photo Courtesy of ENEC
Barakah ESW Discharge System
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• First ever greenfield nuclear HDPE project• Implemented ASME Code Case N-755 Rev1• Used Class 3 HDPE materials• Utilized ASME HDPE N-type stamps for design, supply and
installation• Project’s success provides confidence for other global
nuclear owners to consider HDPE • Assisted in evolution of Code Case N-755 • Appendix XXVI of ASME BPVC Section III• Appendix XI of ASME BPVC Section XI
Conclusion
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Thank You