DSI Oilfield Services



Pipeline Construction

Motor Carrier



DSI is a Veriforce OQ task evaluation provider.  These operator qualification services are supported by full documentation, detailed record keeping, QA/QC, and auditing. We provide custom compliance solutions for each client, and work with your existing system to create a seamless transition to simpler regulatory compliance management.  Verifirce "Common Tasks" that may be evaluated by DSI are listed below.  For a complete list please contact Robert Steele at 817-886-6993 or e-mail robert.steele@performsource-us.com



If necessary, DSI will help facilitate training for the tasks in which you are being evaluated.  Please contact us for more information.

DSI is approved to evaluate the following Common Task: 


001 Compressor Building Gas Detection and Alarm System Calibration, Maintenance and Performance Test
007 Operate Valves
008 Measurement of Wall Thickness with Ultrasonic Device
009 Movement and/or Relocation of Liquid Pipelines
051 Corrosion Monitoring - Atmospheric, External, and Internal
061 Coating Maintenance: Buried or Submerged Pipe
071 Coating Maintenance: Above Ground
080 Operating, Opening, Launching & Receiving Pigs
081 Install, Commission, Inspect, and Maintain Rectifiers and Diodes
091 Inspect or Test Cathodic Protection Electrical Isolation Devices
121 Installation and Maintenance of Electrical Connections and Test Stations
131 Conduct Close Interval Survey
141 Inspect or Test Cathodic Protection Bonds
151 Measure Soil Resistivity
161 Measure Structure-to-Electrolyte Potential
181 Locating Pipelines
191 Monitoring and Protection of Pipe Segments During Disturbance Due to Excavation or Blasting
201 Abnormal Operating Conditions Related to Welding on Pipelines
201 Pipeline Patrolling & Class Location Surveys
202 Monitoring of Welding Process
203 Visual Inspection of Welds not Non-Destructively Tested
208 Plastic Pipe Joining: Butt Fusion
209 Plastic Pipe Joining: Mechanical Joining
210 Plastic Pipe Joining: Electrofusion Joining
211 Perform Plastic Fusion Inspection
211 Plastic Pipe - Electrofusion: Couplings & Sidewall
213 Joining of Steel Pipe - Threaded and Flanged Connections
214 Joining of Steel Pipe - Threaded Connections
215 Joining of Steel Pipe - Flanged Connections
216 Joining of Steel Pipe - Compression Couplings
217 Small Diameter Metal Tubing and Fitting Installation
221 Plastic Pipe - Mechanical Joints, Butt, Sidewall, & Socket Heat Fusion
251 Pressure Testing Pipeline Systems and/or Pipeline Segments
271 Backfilling Pipeline Excavations
281 Installation of Steel Pipe - Field Bends
301 Maintaining Clearances Between Pipe and Other Underground Structures During Construction Activities
321 Installation of Plastic Pipe: Direct Burial
331 Installation of Plastic Pipe: Boring and Insertion
341 Installation of Plastic Pipe: Plowing/Planting/Pull-in
351 Installation of Plastic Pipe: Above Ground
371 Installation of Steel Pipe: Direct Burial
381 Installation of Steel Pipe: Boring
391 Installation of Steel Pipe: Above Ground
401 Examination of Buried Pipelines When Exposed
401 Maintaining Adequate Cover over Buried Pipelines during Installation
402 Apply Approved Coatings to Above Ground Piping
403 Apply Approved Coatings to Below Ground Piping
404 Protection of Coating When Backfilling and From Below Ground Supports
405 Protection of Coatings From Above Ground Structures
406 Conduct Test to Determine Cathodic Protection Current Requirements
407 Perform Cathodic Protection Survey
408 Inspect Cathodic Protection Rectifier
409 Inspect Interference Bonds
411 Inspect/Test to Assure Electrical Isolation is Adequate
411 Pipeline Construction Inspection: Compliance with Company Procedures and Standards
412 Install CP Leads on Pipeline Using Exothermic Weld
413 Anode Installation on Submerged Pipeline or Facilities
414 Inspect for Internal Corrosion Whenever Pipe is Removed
415 Monitoring for Internal Corrosion with Probes and Coupons
416 Monitoring for Internal Corrosion with Gas Samples
417 Atmospheric Corrosion Monitoring
418 General and Localized Corrosion Measurement (Remedial Measures)
419 Test Point Survey
420 Soil Resistivity
421 Measurement of Depth of Pitting with Pit Gage
421 Installation and Maintenance of Pipeline Markers
423 Perform Direct Current Voltage Gradient (DCVG) Survey
424 Perform AC Current Attenuation (ACCA) Survey
425 Perform Alternating Current Voltage Gradient (ACVG) Survey
426 Inspect Pipe Coating with Holiday Detector
427 Inspection of the Application of Above or Below Ground Coatings
428 Pin Brazing to Install CP Leads on Pipeline
429 Monitoring for internal corrosion - bacteria testing - serial dilution method
431 Pipeline Shutdown Using Squeeze Off Tool on Plastic Pipe
451 Pipeline System or Segment Shutdown, Startup or Pressure Change: Operating Pipeline Valve(s)
471 Installation of Steel Pipe - Repair of Imperfections or Damage: Grinding or Removal
481 Pipeline Field Repair (Clockspring)
482 Pipeline Field Repair: Installation of Armor Plate Composite Wrap
491 Tapping Steel and Plastic Pipe: Manual (self-tapping) Equipment
501 Conduct Pressure Test to Substantiate MAOP / MOP
501 Tapping Steel and Plastic Pipe: Mechanical Tapping Equipment
502 Conduct Pressure Test on Pipe that is to be Operated at a Pressure
511 Valve Maintenance: Inspection/Partial Operation
521 Valve Maintenance: Servicing and Repair
541 Installation of Clamps and Sleeves: Bolt-on type
581 Inspection/Testing of Pressure Regulating, Limiting, and Relief Devices
591 Maintenance/Repair of Pressure Regulating and Limiting Devices
601 Start-up/Shut-down of Pipeline to Assure Operation Within MAOP / MOP
601 Maintenance/Repair of Relief Devices: Relief Valves.
602 Monitoring Pipeline Pressure
604 Locate, Mark, and Remediate Exposed Pipelines in the Gulf of Mexico
605 Locate Line/Install Temporary Marking of Buried Pipeline
606 Locate and Mark Submerged Pipelines
607 Damage Prevention: Observation of Excavating and Backfilling
608 Damage Prevention for Blasting Near a Pipeline
611 Hot Tap (Steel Pipe)
611 Prevention of Accidental Ignition
612 Hot Tap (Plastic Pipe)
616 Atmospheric Monitoring during Hot Work Operations
617 Locate Buried Facilities with an Electro-magnetic Device
618 Install Temporary Marking of Buried Pipeline
621 Uprating MAOP of Steel Pipelines
631 Welding on Pipeline and/or Pipeline Components
641 Visual Inspection of Welds
701 Patrolling Pipeline and Leakage Survey without Instrument
703 Placing/Maintaining Line Markers
704 Permanent Field Repair by Grinding
705 Permanent Field Repair Using Composite Materials (Clockspring)
706 Permanent Field Repair Using Composite Materials (Armor Plate)
707 Permanent Field Repair Using Bolt-On Clamp or Sleeve
708 Permanent Field Repair Using Full Encirclement Weld Sleeve
709 Inspection and Testing of Relief Devices (Compressor Stations, Meter Stations, Regulating Stations)
713 Test/Maintain Gas Detection and Alarm Systems
714 Inspect and Maintain Pressure Limiting and Regulating Devices
716 Inspect, Maintain, and Operate Valves
718 Monitoring for Internal Corrosion with Liquid Samples
719 Permanent Field Repair Using Composite Materials (Wrapmaster)
722 Permanent Field Repair Using Composite Materials (Aqua Wrap)
724 Permanent Field Repair Using Composite Materials (Pipe Wrap A+)
900 ROW Observance (Identifying Foreign Facilities)
901 Hauling, Stringing and Handling Pipe
902 Field Bending of Pipe
903 Directional Drilling and/or Boring
904 Inspection of Material
905 Lowering Pipe into Ditch
906 Rights-of-Way Cleanup
907 AC Mitigation
908 Installation of Cathodic Protection
909 Data Collection for As-Built Pipe Location Documentation
910 Inspection of Construction Activities
For our OQ training, we use a standardized, competency-based curricula.