Pressure Vessel FabricationMike Barrett

Pressure Vessel Fabrication

• Types of Pressure Vessels• Materials and Consumables• Welding Joints• Codes• Examples

Types of Pressure Vessels

Above Ground Liquid Storage Tanks Storage Tanks

Types of Pressure Vessels

Below Ground Liquid Storage Tanks Storage Tanks

Types of Pressure Vessels

LNG Tanks and Tankers

Types of Pressure Vessels

Boilers

Types of Pressure Vessels

Power plant components

Types of Pressure Vessels

Gas storage

Types of Pressure Vessels

Nuclear Containment Vessels

Materials and Consumables

• Mild Steel• Chromium and Molybdenum Steel (Cr-Mo)• Nickel Steel• Aluminum• Stainless Steel• High Nickel Alloys

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

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

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

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

Materials and Consumables

Nickel SteelA203 – Ni Alloy Pressure Vessel Plate

-A&D – 2.25% and 3.5% Ni

9% Ni Steel for LNG tanks

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)

Materials and Consumables

Aluminum-Different types and grades used-Superglaze 4043 and 5356

Materials and Consumables

Stainless Steel-304 – Austenitic Stainless Steel-310 – Austenitic Stainless Steel-316 – Pitting Resistant Stainless Steel -321/347 – Stabilized Stainless Steel

Materials and Consumables

Stainless Steel-304 – E308L, ER308L-310 – Red Baron 310 MR-316 – E316, ER316 -321/347 – E347, ER347

Welding Joints

• T-Joints• V-Grooves• U-Grooves• Joggle Joints• Butt Joints

Welding Joints

T-Joints

Welding Joints

V-Grooves

Welding Joints

U-Grooves

Welding Joints

Joggle Joints

Welding Joints

Butt Joints

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

Welding Processes

• Submerged Arc Welding (SAW)• Gas Metal Arc Welding (GMAW)• Flux Cored Arc Welding (GMAW)• Gas Tungsten Arc Welding (GTAW)

Welding Processes

Submerged Arc Welding (SAW)-Thin walled tank butt weld -One sided seamer welding

Welding Processes

Submerged Arc Welding (SAW)-Joggle joint weld on gas storage tank

Welding Processes

Submerged Arc Welding (SAW)-Boiler Tube Water Wall

Welding Processes

Submerged Arc Welding (SAW)-3 o’ clock weld on above ground storage tank

Welding Processes

Submerged Arc Welding (SAW)-lap weld on gas storage tank

Welding Processes

Submerged Arc Welding (SAW)-19mm pressure vessel – one pass each side

Welding Processes

Gas Metal Arc Welding (GMAW)-Air compressor housing weld

Welding Processes

Gas Metal Arc Welding (GMAW)-STT Root on tank with SAW fill

Welding Processes

Gas Metal Arc Welding (GMAW)-Butt weld on small heat exchanger tubes

Welding Processes

Gas Metal Arc Welding (GMAW)-Butt welds on thick aluminum pressure vessels

Welding Processes

Gas Metal Arc Welding (GMAW)-Butt weld on 9% Ni Steel

Welding Processes

Flux Cored Arc Welding (FCAW)-FCAW-g on thick walled pressure vessel

Welding Processes

Gas Tungsten Arc Welding (GTAW)-Welding Cupronickel to 304L SS

Pressure Vessels

QUESTIONS