Blog

Mechanical and plumbing systems rely on piping, tanks, and pressure vessels that operate continuously for years. Over time, corrosion, wear, and environmental factors can gradually reduce the thickness of these components, potentially leading to leaks, failures, or unexpected shutdowns.

Because these changes happen internally and often out of sight, facility teams need reliable ways to assess equipment condition without cutting into systems or interrupting operations.

Ultrasonic thickness testing provides a non-destructive way to measure the wall thickness of pipes and tanks, helping facility managers and maintenance teams identify potential issues early and make informed maintenance decisions.

At McKamish, ultrasonic thickness testing is offered as a specialty service that supports predictive maintenance programs and helps customers better understand the condition of their mechanical and plumbing systems.
 

What Is Ultrasonic Thickness Testing?

Ultrasonic thickness testing is a non-destructive inspection method used to measure the thickness of materials such as steel and iron without damaging the component being tested.

The equipment works by sending high-frequency ultrasonic sound waves through a material. When the sound waves reach the opposite side of the pipe or tank wall, they reflect back to the sensor. By measuring the time it takes for the signal to return, the equipment can calculate the exact thickness of the material.

This technology allows technicians to quickly determine whether equipment is still within safe operating limits or if corrosion and wear have begun to reduce wall thickness.

Because the process is non-invasive, testing can often be performed while systems remain in service.
 

Applications in Mechanical and HVAC Systems

Ultrasonic thickness testing can be used in a variety of mechanical, plumbing, and HVAC applications where piping or tanks may experience corrosion, erosion, or long-term wear.

Common applications include:

• Pipe wall thickness testing in mechanical and plumbing systems
• Deaerator (DA) tank thickness inspections
• Expansion tank wall thickness testing
• Steel and iron piping systems
• Pressure vessels and storage tanks

The technology is capable of measuring pipe wall thicknesses of up to 5 inches in various steel and iron materials.

By collecting thickness measurements at multiple points along a pipe or tank, technicians can identify areas where deterioration may be occurring and provide valuable insight into the overall condition of the system.
 

Supporting Predictive Maintenance Programs

One of the biggest advantages of ultrasonic thickness testing is its ability to support predictive maintenance strategies.

Rather than waiting for a leak or failure to occur, facility teams can monitor equipment condition over time and identify areas where wall thickness may be decreasing.

This data allows organizations to:

• Detect corrosion before it leads to failure
• Plan repairs or replacements proactively
• Extend the life of existing equipment
• Reduce the risk of unexpected downtime

For facilities such as hospitals, universities, industrial plants, and commercial buildings, this type of proactive maintenance can play an important role in maintaining reliable operations.
 

Flexible Testing for Operating Systems

Ultrasonic thickness testing can often be performed on piping systems that are either empty or in service.

The equipment used by McKamish can measure material thickness on systems operating at temperatures up to 375°F, making it possible to inspect many mechanical and plumbing systems without requiring full shutdowns.

This flexibility allows inspections to be scheduled with minimal disruption to facility operations.

When insulation is present on piping or tanks, a small section of insulation may need to be temporarily removed to allow the probe to contact the surface being tested.
 

Safety and Technician Training

As with all services performed by McKamish, safety remains the highest priority when conducting ultrasonic thickness testing.

Only trained personnel are authorized to operate the testing equipment. Technicians follow established procedures and use proper personal protective equipment (PPE), including gloves, safety glasses, and other safety gear as required for the piping location.

By combining proper training with careful inspection practices, technicians can ensure accurate measurements while maintaining safe working conditions.
 

Ultrasonic Thickness Testing as a McKamish Service

McKamish offers ultrasonic thickness testing as part of our expanding service capabilities to support facility maintenance and equipment assessments.

Testing is coordinated through our service department, and measurement points are typically identified in collaboration with the facility team to ensure the most critical areas are evaluated.

Following the inspection, collected data can be used to support maintenance planning, system evaluations, and long-term equipment management strategies.
 

Key Takeaways

Ultrasonic thickness testing provides a non-destructive way to evaluate the condition of pipes, tanks, mechanical, and plumbing systems.

By measuring material thickness without cutting into equipment, facility teams can detect corrosion early, plan maintenance proactively, and reduce the risk of unexpected system failures.

McKamish provides ultrasonic thickness testing as a specialty service to help customers better understand the health of their mechanical and plumbing systems and support long-term operational reliability.

Need This Service? Submit Request Here!
 

Frequently Asked Questions About Ultrasonic Thickness Testing

What is ultrasonic thickness testing used for?

Ultrasonic thickness testing measures the wall thickness of materials such as steel pipes and tanks to detect corrosion, erosion, or material loss.
 

Can ultrasonic testing be performed on operating systems?

Yes. In many cases, ultrasonic thickness testing can be performed while piping systems remain in service, depending on temperature and access conditions.
 

Does ultrasonic testing damage the pipe or tank being inspected?

No. Ultrasonic thickness testing is a non-destructive method that does not damage the material being evaluated.
 

What types of equipment can be tested?

Common applications include piping systems, expansion tanks, deaerator tanks, and other steel or iron mechanical components.
 

Does McKamish provide ultrasonic thickness testing as a service?

Yes. McKamish offers ultrasonic thickness testing as a specialty service to help customers assess the condition of piping systems and mechanical equipment.