DNV has a 24,000 square foot full-service corrosion and materials laboratory in Dublin, Ohio providing research, testing and failure analysis services. Facilities include a wide range and volume of electrochemical and mechanical instrumentation, autoclaves for high pressure and temperature exposure, flow testing facilities, safety systems for H2S (and other poisonous gas) exposures, microscopy, and analytical measurement capabilities.
Materials Analysis Capabilities
• Scanning Electron Microscopy (SEM)
• Energy Dispersive X-Ray Spectroscopy (EDS)
• Wave-length Dispersive Spectroscopy (WDS)
Electrochemical Instrumentation
• Research grade potentiostats
• Electrochemical testing potentiostats/galvanostats
• Zero resistance ammeters
• Electrometers
Environmentally Assisted Cracking
• Slow strain rate testing equipment
• Autoclaves for EAC testing at elevated temperatures and pressures
• Mechanical fatigue machines
• Creep frames for constant and cyclic load tests
• Servohydraulic fatigue testing systems
• Computerized data acquisition systems
• Crack growth measurement by electric potential drop or compliance measurements
Fatigue and Fracture Assessment
• Corrosion fatigue
• Fatigue crack propagation
• High-temperature fatigue and fracture
• High-cycle fatigue
• Low-cycle and thermal fatigue
• KIC and JIC fracture toughness
• Creep crack growth
Coating Testing
• ASTM B117 Salt Spray Test
• ASTM G85 (B2877) Acetic Acid-Salt Spray Test
• ASTM G8 Cathodic Disbondment Test
• ASTM G42 Cathodic disbanding of Pipeline Coatings at Elevated Temperatures
• ASTM D4587 Conducting Tests on Paint and Related Coatings and Materials Using a Fluorescent UV-Condensation Light-and-Water-Exposure Apparatus
• ASTM D1654 Evaluation of Painted or Coated Specimens Subjected to Corrosive Environments
• ASTM G19 Disbonding Characteristics of Coatings by Direct Soil Burial
• ASTM B368 Cooper-Accelerated Acetic Acid-Salt Spray Test (CASS Test)
• ASTM B380 Corrosion Testing of Decorative Electrodeposited Coatings by the Corrodekote Procedure
Inhibitor Testing and Monitoring
• Rotating Cylinder Electrode (RCE)-Ambient to high pressure/temperature
• Kettle tests
• Alternate immersion tests
• Autoclave testing
• AC and DC electrochemical techniques\
• Flow loop exposures
High temperature/high pressure H2S testing
Autoclaves
• Standard exposures in aggressive environments
• Elastomer evaluations for the chemical process industry
• Electrochemical testing (polarization resistance, potentiodynamic polarization and electrochemical [AC] impedance spectroscopy)
• Rotating electrode
• Mechanical testing (slow strain rate, constant load, fracture mechanics and corrosion fatigue)
• Closed-loop and refreshed-loop circulation
• Refreshed gas systems
High Temperature Materials Evaluation
• Corrosion, oxidation, sufidation
• Tensile, compressive and flexural strength
• Creep-deformation resistance
• Stress-rupture behavior
• Low-cycle and thermal fatigue
• Creep-fatigue-environment interaction
• Impact strength
• Fracture toughness
• Fatigue crack growth
• Creep crack growth
Multiphase Flow Corrosion System
The Multiphase Flow and Corrosion System (MFCS) at DNV Columbus in Dublin, Ohio, is a large-scale pilot plant test facility for multiphase flow and corrosion studies. Operating conditions include:
• Pressure: up to 10 bars
• Temperature: up to 130° C
• Superficial Gas Velocity: 0 to 25 m/s
• Superficial Liquid Velocity: 0 to 5 m/s
• Liquid Viscosity Range: 0.5 to 300 cP
Capabilities include:
• Inclinable 10 cm (4 inch) diameter, 36 m long, 316L
• Stainless steel flow loop with test section for inserting corrosion probes
• Low shear progressive cavity pumps for gas and liquid circulation
• Easily changed from stainless steel to Plexiglass pipes
• A transparent pipe section for visual observation up to 10 bars and 150° C