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Degassing & Vacuum Processing
Remove Combustible Gases And Restore Your Transformer
Why Combustible Gases Are a Threat
When dissolved gas analysis (DGA) reveals elevated combustible gases in your transformer oil, you're looking at evidence of internal faults. These gases — hydrogen, methane, ethylene, and acetylene — indicate thermal or electrical stress that's breaking down insulation and generating heat. The stakes are clear: a single transformer failure can cost millions in emergency repairs, replacement equipment, and lost productivity.
4 Reasons to Degas & Vacuum Process:
Prevent Catastrophic Failure
Avoid Unplanned Downtime
Protect Your Team and Equipment
Extend Equipment Life
Experience the SDMyers Difference
We do more than treat symptoms
Degassing alone won't solve your problem — and we won't pretend otherwise. Combustible gases are symptoms of underlying faults. Without identifying and repairing the root cause first, those gases will return.
With more than 60 years of transformer maintenance experience, SDMyers takes a diagnostic-first approach: investigate the fault, repair it in the field, and restore your transformer to a clean baseline through vacuum degassing.
How Our Degassing Process Works
01
Investigate & Diagnose
We begin with comprehensive electrical testing and inspection to identify the fault generating combustible gases. Our diagnostic capabilities include dissolved gas analysis, power factor testing, and internal inspection when needed. Pinpointing the root cause is essential before degassing.
02
Repair the Fault
In most cases, faults can be repaired in the field without costly transformer removal. Our experienced technicians perform on-site repairs from bushing replacements to tap changer maintenance, addressing the underlying issue efficiently and effectively.
03
Degas & Restore
With the fault repaired, we perform vacuum degassing on your de-energized transformer. Oil is circulated through our mobile degasification unit where it's heated, vacuum processed, and filtered. We continue until oil quality meets applicable standards, establishing a clean baseline for future monitoring.
Certifications & Standards
We align with industry standards and best practices to deliver accurate testing, sound diagnostics, and safe fieldwork.
Resources
We’re the transformer experts so you don’t have to be. Explore resources backed by 60+ years of end-to-end transformer care experience and diagnostics data.
Frequently Asked Questions
Transformer degassing (also called vacuum degassing or vacuum processing) is a field service process that removes dissolved combustible gases from transformer oil. Oil is circulated through a mobile degasification unit where it's heated, vacuum processed, and filtered until it meets applicable quality standards.
Combustible gases like hydrogen, methane, ethylene, and acetylene are generated by internal faults — typically thermal or electrical stress that breaks down insulation inside the transformer. Elevated gas levels detected through Dissolved Gas Analysis (DGA) are a sign that something is wrong internally.
Degassing alone won't solve the problem. Combustible gases are symptoms of an underlying fault. Without identifying and repairing the root cause first, the gases will return. That's why SDMyers takes a diagnostic-first approach — we investigate and repair the fault before performing degassing.
No. SDMyers brings mobile degassing units directly to your site, so there's no need for costly transformer transportation or extended outages. All work is performed on-site with minimal disruption to your operations.
Talk with a Transformer Expert
Get a free quote or consultation — we’re here to help.
Call (330) 630-7000 or fill out the form to connect with an SDMyers transformer expert today.
