Devcon Maintenance and Repair Solutions - Sintemar

Field Application Reports
Location 46
Transformer Oil Leak
Repair
Products: One Minute Epoxy / Fasmetal /
Application Date: Flexane® 80 Putty
Application Customer: Date: 4/3/95
Customer: Industry: Tucson Electric Power
Industry: Utility Power Distribution
Problem:
Weld porosity’s caused seeping oil leaks from this substation transformer. The past repair procedure was
to drain the oil from the tank and re-weld. This repair process was expensive and caused long term power
outages.
Solution:
Repair or leak areas were roughened using a grinder. One Minute Epoxy was applied using the Mark 5
Auto Mix System to plug all active leaks. Following confirmation that all oil leaks had been stopped,
repair areas were then chemically cleaned using Cleaner Blend 300. Fasmetal was then applied directly
over the One Minute Epoxy to a thickness of 1/4, extending beyond the One Minute Epoxy by 3mm.
Following Fasmetal’s 1 hour cure, repair areas were primed using both FL10 and FL20 Primers. Each
primer was allowed to cure or dry for 15 minutes. Using both primers on metal substrates will improve
adhesion from 25 pli to 50 pli. Two primer system is always recommended in wet or outdoor operating
conditions. Flexane 80 Putty was applied over the Fasmetal to a thickness of 1/4” extending beyond by 3
inches.. Flexane 80 Putty encapsulated the repair area as a flexible, (350% elongation), vibration and
climate resistant permanent seal.