Fabrication QA

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Fabrication QA Inspections

ON-SITE TECHNICAL SERVICES INC provides third-party shop fabrication inspection for water, wastewater, public works, power Generation and Petrochemical projects. Our team of 160 inspectors is experienced in all phases of manufacturing and fabrication, including material verification, welding, machining, non-destructive testing (NDT), coating, and functional testing.

ON-SITE TECHNICAL SERVICES INC inspectors are located at key metropolitan areas throughout the United States and overseas. This provides our customers a key advantage of reduced costs by using an inspector who lives near the fabricator. By staffing each assignment with qualified inspectors who live in close proximity to the fabricator, we can minimize travel-related expenses as well as response time.

From single short-term assignments to major turnkey capital improvement projects, ON-SITE can provide highly qualified inspectors throughout the United States and the world to verify conformance with project specifications and industry standards.

Overseas inspections are supported by ON-SITE’s Team of Associates. This provides an advantage of reduced costs, and inspectors who speak and read the local language. ON-SITE provides all of the project management for overseas assignments and communications and reports are provided in English to our customers. Countries include Canada, Mexico, Brazil, Japan, Korea, China, India, Europe, and Great Brittan.

Inspection Pipe and Fittings

  • Large-diameter, spiral welded and "can pipe"
  • Electric resistance welded (ERW) Pipe
  • Ductile iron pipe and fittings
  • Welded process pipe spools
  • RCP Pipe and fittings
  • Large Diameter PVC/HDPE/Fiberglass Pipe

Inspection Fabricated Valves

  • Butterfly valves
  • Knife Gate Valves
  • Sleeve valves
  • Ball valves
  • Plunger Valves
  • Slide / Sluice gate valves

Inspection Code Pressure Vessels

  • Heat exchangers
  • Filters / Scrubbers
  • Process pipe spools
  • Instrument and Electrical

Switch Gear and Motor Control Centers

  • Blowers
  • Material handling equipment
  • HVAC equipment
  • Hydraulic Turbines
  • Generators
  • Factory Acceptance Testing

Performance Testing

  • Factory Acceptance Testing
  • Loop Checks
  • Start-Up/Commissioning
  • Hydrostatic tests
  • Physical and Chemical testing
  • Forensic Analysis

Inspection Coatings

  • Surface Prep / Blast profile
  • Dry Film Thickness
  • Adhesion tests
  • Holiday tests