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Pressure Vessel FabricationMike Barrett
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Pressure Vessel Fabrication
• Types of Pressure Vessels• Materials and Consumables• Welding Joints• Codes• Examples
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Types of Pressure Vessels
Above Ground Liquid Storage Tanks Storage Tanks
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Types of Pressure Vessels
Below Ground Liquid Storage Tanks Storage Tanks
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Types of Pressure Vessels
LNG Tanks and Tankers
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Types of Pressure Vessels
Boilers
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Types of Pressure Vessels
Power plant components
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Types of Pressure Vessels
Gas storage
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Types of Pressure Vessels
Nuclear Containment Vessels
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Materials and Consumables
• Mild Steel• Chromium and Molybdenum Steel (Cr-Mo)• Nickel Steel• Aluminum• Stainless Steel• High Nickel Alloys
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Materials and Consumables
Mild SteelA225 - Pressure Vessel Plate – Mn-Vn-.5%NiA283 – Storage Tank PlateA515 – High Temp Pressure Vessel PlateA516 – Pressure Vessel PlateA517 – Q&T Pressure Vessel PlateA662 – Low temperature Plate
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Materials and Consumables
Mild SteelA225 – E8018-C3, LA75 (SAW/GMAW)A283 – 70 ksi strength consumableA515 – 70 ksi strength consumableA516 – 70 ksi strength consumableA517 – E11018MR, LAC-M2 (SAW)A662 – E7018-1, LA-75(GMAW), LS-3/8500
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Materials and Consumables
Chromium and Molybdenum Steel (Cr-Mo)
ASTM 387-P2 .75% Cr-P11 1.0% Cr-P12 1.25% Cr-P22 2.25% Cr 1.0% Mo-P91 9.0% Cr 1.0% Mo
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Materials and Consumables
Chromium and Molybdenum Steel (Cr-Mo)
ASTM 387-P2 Excalibur 8018-B2, Lincolnweld LA-92-P11 Excalibur 8018-B2, Lincolnweld LA-92-P12 Excalibur 8018-B2, Lincolnweld LA-92 -P22 Jet LH-90 –B3, Lincolnweld LA-93 -P91 ER90S-B2 (Tig), BlueMax 9016-B9
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Materials and Consumables
Nickel SteelA203 – Ni Alloy Pressure Vessel Plate
-A&D – 2.25% and 3.5% Ni
9% Ni Steel for LNG tanks
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Materials and Consumables
Nickel SteelA203 – Ni Alloy Pressure Vessel Plate
-A&D – E8018-C1, LA-75 (GMAW)9% Ni Steel for LNG tanks
-ENiCrMo-4, ERNiCrMo-4 (SAW/GMAW)
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Materials and Consumables
Aluminum-Different types and grades used-Superglaze 4043 and 5356
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Materials and Consumables
Stainless Steel-304 – Austenitic Stainless Steel-310 – Austenitic Stainless Steel-316 – Pitting Resistant Stainless Steel -321/347 – Stabilized Stainless Steel
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Materials and Consumables
Stainless Steel-304 – E308L, ER308L-310 – Red Baron 310 MR-316 – E316, ER316 -321/347 – E347, ER347
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Welding Joints
• T-Joints• V-Grooves• U-Grooves• Joggle Joints• Butt Joints
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Welding Joints
T-Joints
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Welding Joints
V-Grooves
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Welding Joints
U-Grooves
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Welding Joints
Joggle Joints
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Welding Joints
Butt Joints
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Codes
• ASME ‘American Society of Mechanical Engineers’ - From Construction to Post Construction
• NBIC ‘National Board Inspection Code - Repair and Inspection Code’
• API-510 ‘American Petroleum Institute - Pressure Vessels used in Chemical & Petroleum’
• API-650 ‘American Petroleum Institute’ - <15-psig to Atmospheric- Aboveground Storage Tanks
• DOT - Department of Transportation - Transportable Pressure Vessels
• UL ‘Underwriters Laboratory’- Aboveground Storage Tanks and Electrical Devices
• ASTM, ANSI, SAE - are material specifications
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Welding Processes
• Submerged Arc Welding (SAW)• Gas Metal Arc Welding (GMAW)• Flux Cored Arc Welding (GMAW)• Gas Tungsten Arc Welding (GTAW)
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Welding Processes
Submerged Arc Welding (SAW)-Thin walled tank butt weld -One sided seamer welding
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Welding Processes
Submerged Arc Welding (SAW)-Joggle joint weld on gas storage tank
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Welding Processes
Submerged Arc Welding (SAW)-Boiler Tube Water Wall
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Welding Processes
Submerged Arc Welding (SAW)-3 o’ clock weld on above ground storage tank
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Welding Processes
Submerged Arc Welding (SAW)-lap weld on gas storage tank
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Welding Processes
Submerged Arc Welding (SAW)-19mm pressure vessel – one pass each side
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Welding Processes
Gas Metal Arc Welding (GMAW)-Air compressor housing weld
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Welding Processes
Gas Metal Arc Welding (GMAW)-STT Root on tank with SAW fill
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Welding Processes
Gas Metal Arc Welding (GMAW)-Butt weld on small heat exchanger tubes
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Welding Processes
Gas Metal Arc Welding (GMAW)-Butt welds on thick aluminum pressure vessels
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Welding Processes
Gas Metal Arc Welding (GMAW)-Butt weld on 9% Ni Steel
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Welding Processes
Flux Cored Arc Welding (FCAW)-FCAW-g on thick walled pressure vessel
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Welding Processes
Gas Tungsten Arc Welding (GTAW)-Welding Cupronickel to 304L SS
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Pressure Vessels
QUESTIONS