Non-destructive testing (NDT), post-weld heat treatment (PWHT), and pressure tests are three critical processes in the fabrication and inspection of pressure vessels, pipelines, and other pressure-containing equipment. These processes are essential to ensure the safety and reliability of these systems.


NDT is the umbrella term for a number of techniques used to examine and assess the durability of materials and components without causing harm. This covers technologies such as ultrasonic testing, radiography, magnetic particle inspection, and liquid penetrant testing. To find flaws or defects in the material, welds, or components that could cause structural failures or leak, NDT is essential. Corrective measures can be made to stop equipment failure and assure safety by identifying these defects early.


PWHT is a heat treatment procedure used after welding to lower residual stresses and enhance
the weldment’s mechanical qualities. This is crucial because localised heating and cooling brought on by welding might result in residual strains and distortion. PWHT can reduce these stresses and enhance the weldment’s tensile strength, ductility, and fatigue resistance. Pressure vessels and other essential equipment must normally go through this procedure to make sure they satisfy the needed performance standards.

Pressure Tests

Pressure tests are used to verify the integrity and strength of pressure-containing equipment. These tests involve pressurizing the equipment to a specified pressure and monitoring for leaks, deformation, or other failures. Pressure tests are typically performed before commissioning a new system, after repairs or modifications, or at regular intervals as part of a maintenance program. By conducting pressure tests, potential safety hazards can be identified and addressed before equipment is put into service.

Work with the best!

We take pride in our commitment to quality, safety, and reliability at Fabcon. Our services are performed by experienced professionals who are dedicated to providing the highest level of service to our clients. We are committed to meeting and exceeding the expectations of our clients and providing them with the peace of mind they need to operate their equipment with confidence.

Contact us today to learn more about our NDT, PWHT, and pressure testing services and how we can help you ensure the safety and reliability of your pressure-containing equipment!