Ultrasonic Dead Zones in Thin Transformer Tank Welds
A thin tank seam may place near-surface and b…
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Magnetic-Particle Testing of Transformer Tank Attachment Welds
One magnetization direction can miss a differ…
Read full articleRadiator Header Welds: Inspect Before Access Closes
Final inspection can have less access than an…
Read full articleWelding Thin Corrugated Transformer Panels to Heavy Frames
The thin sheet and heavy frame can impose com…
Read full articleBack-Gouged Transformer Tank Welds: Inspect the Exposed Root
The back-gouged surface is an inspection oppo…
Read full articleTransformer Tank Corner Welds: Detect Lack of Fusion
A corner geometry can hide the fusion boundar…
Read full articleTransformer Tank Weld Porosity: Does It Form a Leak Path?
A weld pore needs connectivity to create a th…
Read full articleTransformer Tank Weld Qualification: Cover Each Oil-Retaining Joint
Structural weld qualification and oil tightne…
Read full articleTransformer Tank Salt-Spray Tests Do Not Predict Service Life
A salt-spray duration is a test exposure, not…
Read full articleTrace Transformer Tank Coating to Its Serial Number
A batch record is useful when it identifies w…
Read full articleTransformer Cooling Fins: Keep Painted Air Passages Open
A coating defect can change an air passage as…
Read full articlePaint Repair on Oil-Contaminated Transformer Tank Steel
A clean-looking surface can become oily again…
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