Home Quality & HSE Test & Inspection

Rigorous Verification, tested not assumed.

Every transformer tank and cover manufactured by TSY Energy undergoes mandatory oil tightness and pressure testing, non-destructive testing (NDT), and paint film thickness measurements.

1. Pressure & Oil Tightness Test

Overpressure testing using air or hydraulic fluid to verify that the tank envelope is free of micro-cracks and seam porosity.

2. Non-Destructive Testing (NDT)

Liquid penetrant (PT) and magnetic particle testing (MT) applied to critical structural welds and lifting lug connections.

3. Dimensional & Flange Flatness Inspection

Straightness and flatness verification of sealing flanges to verify gasket fitment during OEM transformer assembly.

4. Coating Thickness (DFT) & Adhesion Test

Dry Film Thickness (DFT) gauge checks, cross-cut adhesion tests, and surface roughness verification against the coating specification for the order.

Test scope is set by the order specification

On the test floor

Six checks,
photographed in our halls.

Photographed between 25 and 31 August 2026 on a large power transformer tank and on covers, domes and conservators.

Leak test under UV light

A TSY quality control inspector, seen from behind, shining a UV lamp inside a large power transformer tank; the welded stiffener seams glow green
Large power transformer tank
Gloved hands holding a UV lamp and a spray can at a manhole flange on a dome; the inner edge of the opening glows green under the UV light
Dome
A gloved hand passing a UV lamp over the flanged openings of a transformer tank cover; the inner wall of one opening glows green
Tank cover

Ultrasonic testing (UT)

A TSY inspector, seen from behind, scanning the circumferential weld of a conservator with an ultrasonic flaw detector
Conservator
An ultrasonic flaw detector screen held up beside a ground circumferential weld on a conservator
Conservator
A gloved hand guiding an ultrasonic probe along a couplant-coated weld on a tank wall
Large power transformer tank

Liquid penetrant testing (PT)

A quality control inspector wearing a respirator examines red penetrant around the weld of a nozzle flange on a tank wall
Large power transformer tank
A gloved hand spraying developer around a flanged opening on a tank cover, with traces of red penetrant on the surface
Tank cover

Magnetic particle testing (MT)

A magnetic particle yoke placed across the weld of a lifting lug on a tank cover, lit by a hand torch
Tank cover
Gloved hands holding a magnetic particle yoke at a lug weld on a tank wall while white contrast paint is sprayed
Large power transformer tank

Visual weld inspection

Two TSY quality control inspectors checking the inner wall of a large power transformer tank with torches
Large power transformer tank
A hand holding a weld gauge against the fillet weld around a flanged opening on a tank cover
Tank cover
A hand placing a weld gauge on the flange weld of a dome
Dome

Digital model check

A TSY quality control inspector holding a tablet up to a tank wall; the screen overlays the digital model on the camera view
Large power transformer tank

Need specific inspection plans (ITP)
for your transformer tanks?

info@tsyenergy.com +90 (262) 658 2102