Inspect & Preserve. 

Northern Inspection Services (NIS) experienced inspectors are trained to provide the valuable information PHMSA and other government authorities require from owners and operators to ensure the integrity of their in-service assets. 

• Magnetic Particle Testing (MT)
• Liquid Penetrant Testing (PT)
• Ultrasonic Testing (UT)
• Electromagnetic Testing (ET)
• Visual Testing (VT)
• Phased Array Ultrasonics (PAU)
• Ultrasonic Bulkwave Testing/ Short Range Guided Wave/ Medium Range Ultrasonics (MRUT)
• Ground Penetrating Radar (GPR)
• Guided Wave Testing (GWT)

Non-destructive testing (NDT) covers a wide group of techniques used to evaluate the properties of a material, part, product, weld, or system without materially affecting the integrity of the unit being inspected or investigated under the test procedure.