Transformer Leak Detection and Repair
Oil leaks can compromise transformer performance, damage surrounding equipment, create environmental concerns, and lead to costly unplanned outages. MVA provides transformer leak detection and repair services to help utilities, industrial facilities, and power generation companies locate the source of a leak and restore equipment integrity.
Whether you are dealing with a visible oil leak, a recurring gasket failure, or a gradual drop in oil level, our experienced field service team can assess the problem and recommend an appropriate repair.
Why Transformer Oil Leaks Require Prompt Attention
Transformer oil serves two essential purposes: insulating energized components and carrying heat away from the transformer’s internal parts. When oil escapes, the transformer may lose some of its insulating and cooling capacity. A leak may also allow air and moisture to enter the sealed system, potentially affecting the condition of the oil and solid insulation.
Even a relatively small leak can become more serious over time. Prompt investigation can help reduce the risk of:
- Low transformer oil levels
- Moisture and air entering the transformer
- Reduced cooling and insulation performance
- Contamination of surrounding equipment or soil
- Continued gasket or component deterioration
- Unexpected outages and more extensive repairs
Locating the Source of a Transformer Leak
Transformer oil can travel along surfaces before it becomes visible, making the true origin of a leak difficult to identify. Our technicians inspect the transformer and its associated components to determine where the oil is escaping and evaluate the condition of the affected area.
Common transformer leak locations include:
- Tank seams and welded connections
- Main cover and inspection plate gaskets
- Bushings and bushing turrets
- Radiators, coolers, and associated piping
- Valves, flanges, and fittings
- Pumps and cooling-system components
- Gauges, monitors, and instrumentation
- Conservator tanks and piping
- Load tap changer compartments
- Drain and sampling valves
Depending on the equipment and site conditions, leak detection may include a detailed visual inspection, cleaning and monitoring the suspected area, checking oil levels and pressure conditions, and using specialized detection methods when necessary.
