Advanced NDT

Sentinel Integrity offers a wide array of advanced NDT applications for turnaround and on-stream inspection activities. Services include advanced ultrasonic testing, heat exchanger tubing inspections, eddy current array testing, real time radiography, and magnetic flux leakage tank bottom inspections.

Click any of the links below to learn more about our advanced NDT services.

High Temperature Hydrogen Attack

High-Temperature Hydrogen Attack (HTHA) is a damage mechanism that affects equipment that has been exposed to hydrogen at certain temperatures and pressures. At these temperatures, the hydrogen molecules (H 2 ) dissociate into individual hydrogen atoms. These atoms are small enough that they are …

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Real-Time Radiography

Real Time Radiography (RTR) is a type of non-destructive testing (NDT) that uses radiation such as x-rays or gamma rays to produce digital images of a piece of equipment for later examination. The RTR process begins by emitting radiation at the object to be tested. The rays then pass through …

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Magnetic Flux Leakage

Magnetic flux leakage (MFL) is a nondestructive testing technique that is uses electromagnetism to search for flaws or damage in ferromagnetic materials. Sentinel Integrity Solutions uses MFL to inspect the floors of tanks for flaws and damage. MFL works by using either permanent magnets or …

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Tubing Inspection

Sentinel Integrity’s Tubing Inspection Service Line maintains a staff of fully qualified and highly trained tubing data analysis and acquisition technicians. They are capable of evaluating and inspecting your heat exchanger tubing assemblies using a variety of modern tubing inspection applications. …

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Eddy Current Array

Eddy Current Array (ECA) is a form of nondestructive eddy current testing that involves electronically driving eddy current coils placed next to each other in a probe assembly. Each coil in the probe produces a signal, the strength of which depends on the phase and amplitude of the object the probe …

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Time of Flight Diffraction

Time of Flight Diffraction (TOFD) is an advanced method of ultrasonic testing. This technique is a sensitive and accurate method for the nondestructive testing of welds or defects. TOFD is conducted from a system that is made up of two probes located on opposite sides of the weld. One of the …

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Phased Array Ultrasonic Testing

Phased Array Ultrasonic Testing (PAUT) is an advanced NDT method that is often used for weld inspection and crack detection. It can also be used to effectively profile remaining wall thickness in corrosion survey applications. PAUT works by activating several elements independently, each …

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Automated Ultrasonic Testing

Automated Ultrasonic Testing (AUT) is a fully automated technique that utilizes a multi-channel ultrasonic imaging system and encoded robotic scanners to perform a UT examination on a piece of equipment. AUT is used in a number of industries and can be an effective method for inspecting a number of …

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6606 Miller Road 2
Houston, Texas 77049
Office: (281) 457-2225
Fax: (281) 457-0225


3038 Leopard Street
Corpus Christi, Texas 78408
Office: (361) 887-2014
Fax: (361) 887-2022


1954 West Shore Avenue
Port Allen, Louisiana 70767
Office: (225) 421-8640
Fax: (225) 421-8645


8900A 1st Street,
Nederland, Texas 77627
Office: (409) 790-7426