Articles | TechKnowServ

Dec 135 min read

Chasing the Indication: Weld Inspection, Excavation, Repair and Inspection.

Weld inspection and repair is a multi-step process that includes non-destructive testing, inspection data interpretation against the...

Ultrasonic Testing - Coupling Channel Ensuring Data Integrity

Thomas R. Hay, Ph.D., P.E

Nov 224 min read

Ultrasonic Testing - Coupling Channel Ensuring Data Integrity

Introduction Excellent quality non-destructive testing (NDT) data is required to ensure the structural integrity of bridges, piping...

Non-destructive Testing Virtual Training - Ultrasonic Testing Level 1

Thomas R. Hay, Ph.D., P.E and Shiv Patel, B.S. CompSci

Nov 66 min read

Non-destructive Testing Virtual Training - Ultrasonic Testing Level 1

Non-destructive testing (NDT) training is essential for developing a skilled workforce, whether for new employees with little to no NDT...

Aboveground Storage Tank Door Sheets and Code Compliant Repairs: API-653 Aboveground Storage Tank Inspection, Repair, Alteration and Inspection Considerations

Thomas R. Hay, Ph.D., P.E

Oct 145 min read

Aboveground Storage Tank Door Sheets and Code Compliant Repairs: API-653 Aboveground Storage Tank Inspection, Repair, Alteration and Inspection Considerations

Carbon and stainless steel aboveground storage tanks are constructed in accordance with guidelines set forth by API-650 Welded Tanks for...

Ultrasonic Testing of Welds AMSE Boiler and Pressure Vessel Code

Thomas R. Hay Ph.D., P.E. and Matthew Vonada

Sep 186 min read

Ultrasonic Testing of Welds AMSE Boiler and Pressure Vessel Code

Non-destructive testing of welds per ASME pressure vessel and piping codes [1-3] is outlined within the codes and additionally in ASME...

Retrofitting Ultrasonic Immersion Automated Scanners with Phased Array Ultrasonic Testing Instrumentation

Thomas R. Hay, Ph.D., P.E

Jul 174 min read

Retrofitting Ultrasonic Immersion Automated Scanners with Phased Array Ultrasonic Testing Instrumentation

Introduction to Ultrasonic Immersion Testing Automated ultrasonic immersion testing (AUT) offers a high-speed, high-resolution method to...

Acoustic Emission Testing of Concrete Structures

Thomas R. Hay, Ph.D., P.E. and Matthew Whiteman

Jun 276 min read

Acoustic Emission Testing of Concrete Structures

Explore the nuances of acoustic emission testing of concrete structures

Strain and Stress and Stress Analyses Driven Non-destructive Testing

Thomas R. Hay, Ph.D., P.E

Jun 114 min read

Strain and Stress and Stress Analyses Driven Non-destructive Testing

Measurement of strain and upstream stress analyses can be used before non-destructive testing to identify areas of abnormal stress levels...

Non-destructive Testing Personnel Qualification and Performance to AWS Structural and Bridge Welding Code

Thomas R. Hay, Ph.D., P.E

May 175 min read

Non-destructive Testing Personnel Qualification and Performance to AWS Structural and Bridge Welding Code

Non-destructive testing personnel are qualified to perform NDT based on accumulated in-person or remote classroom training, in-person...

Process Piping Mechanical Integrity and Guided Wave Ultrasonic Testing - GWUT

Thomas R. Hay, Ph.D., P.E

Apr 265 min read

Process Piping Mechanical Integrity and Guided Wave Ultrasonic Testing - GWUT

A Mechanical Integrity (MI) program is an important element of the OSHA Process Safety Management standard which was established to...

Natural Gas Dehydration Unit Asset Integrity Management

Thomas R. Hay, Ph.D., P.E

Apr 84 min read

Natural Gas Dehydration Unit Asset Integrity Management

Natural gas dehydration units are typically installed at well pads to remove water vapor from the natural gas stream. These “dehy” units...

A Review of Non-destructive Testing Methods for Aboveground Storage Tank Floor Inspection

Thomas R. Hay, Ph.D., P.E

Feb 195 min read

A Review of Non-destructive Testing Methods for Aboveground Storage Tank Floor Inspection

Aboveground storage tank floor inspection is required to assess the current and future conditions of tank floor plate top- and...

Application of Drones in the Field of Non-destructive Testing

Thomas R. Hay, Ph.D., P.E

Dec 22, 20234 min read

Application of Drones in the Field of Non-destructive Testing

Introduction – Drone Non-destructive Testing Drones, also known as Unmanned Aerial Vehicles (UAVs), have become valuable tools for...

Leak Testing: Non-destructive Testing Options

Thomas R. Hay, Ph.D., P.E

Dec 7, 20235 min read

Leak Testing: Non-destructive Testing Options

An overview of Bubble Leak Testing, Pressure Change Leak Testing Leaks are common occurrences in pressure vessels, piping systems,...

How Acoustic Leak Detection is Revolutionizing Leak Detection and Mitigation

Thomas R. Hay and Josh Bucheit

Nov 7, 20234 min read

How Acoustic Leak Detection is Revolutionizing Leak Detection and Mitigation

Introduction to Acoustic Leak Detection Acoustic leak detection is a cutting-edge technology that has revolutionized the way we identify...

Ultrasonic Testing of Steel Bridge Pins: Conventional Ultrasonic and Phased Array Ultrasonic Testing

Thomas R. Hay, Ph.D., P.E

Nov 2, 20234 min read

Ultrasonic Testing of Steel Bridge Pins: Conventional Ultrasonic and Phased Array Ultrasonic Testing

Conventional ultrasonic testing (UT) and phased array ultrasonic testing (PAUT) of steel bridge pins is important for several reasons,...

Phased Array Ultrasonic Testing of Structural Steel Welds to AWS D1.5 and AWS D1.1

Thomas R. Hay, Ph.D., P.E

Sep 3, 20235 min read

Phased Array Ultrasonic Testing of Structural Steel Welds to AWS D1.5 and AWS D1.1

In 2015, the American Welding Society (AWS) D1.5 Bridge Welding Code [1,2,3] adopted the annex, "Advanced Ultrasonic Examination," that...

Automated Ultrasonic Testing (AUT) C-scan – Ship Hull Survey

Thomas R. Hay, Ph.D., P.E

Jul 15, 20234 min read

Automated Ultrasonic Testing (AUT) C-scan – Ship Hull Survey

Automated ultrasonic testing is used to support many inspection code and standard ultrasonic surveys per requirements in American...

Phased Array Ultrasonic Testing - Performance Verification

Thomas R. Hay, Ph.D., P.E

Jun 27, 20234 min read

Phased Array Ultrasonic Testing - Performance Verification

Introduction to Phased Array Ultrasonic Testing System Verification Phased array ultrasonic testing (PAUT) equipment calibration can mean...

Thomas R. Hay, Ph.D., P.E

Jun 22, 20234 min read

Water Tank Non-Destructive Testing

In-Service Water Tank Inspection Aboveground steel water storage tanks require internal inspection in accordance with the relevant...

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