Sonic Systems International, Inc.
"A Powerful Part of Your Team"

Sonic Systems International provides ISI (In-Service Inspection) services for customers desiring a flexible, focused and responsive approach to their ISI Program.  SSI employs a highly skilled, highly experienced workforce with the right training, skills and attitude to ensure customers receive the maximum quality service in the safest manner possible.  

SSI has worked in nearly every nuclear facility in the United States and a multitude of sites across the world.  We maintain our top notch quality and high standards through continually monitoring technician skill sets and training. 


We work as an integral part of your team, sharing your goals, risks and objectives.  

Inspection Capabilities: 

  • Ultrasonic Testing (UT)
  • Automated Ultrasonic Inspection Testing (AUT)
  • Magnetic Particle Testing (MT)
  • Penetrant Testing (PT)
  • Visual Testing (VT)
  • Eddy Current Testing (ET)
  • BOP
  • FAC
  • EPRI [Electric Power Research Institute]-Certified technicians for bolting, piping, & vessel
  • PDI Manual
    • IGSCC
    • Detection, Length, & Sizing
    • Bolting Dissimilar Metal Weld Overlay
    • RPV (Reactor Pressure Vessel)
    • Detection, Length, Thru-wall sizing, Extended thickness
  • PDI Automated
    • IGSCC
    • Detection, Length, & Sizing
    • Conventional Dissimilar Metal
    • Detection, Length, Thru-wall sizing
    • Conventional Weld Overlay
    • Detection, Length, Thru-wall sizing
    • RPV, Nozzle Inner Radius from vessel OD (outer diameter)
    • RPV, Nozzle Outer Radius from vessel ID (inner diameter)