Transformer Oil Leak RepairBack to
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Flexane® 80 Putty
Inspection of 4Kv and 12Kv transformers revealed excessive amounts of oil leaking from both the bushing, flange and fastener areas. The leaking was so severe that both sides of the transformer tank were covered with thick films of oil. De-energizing and installing new gaskets would require a 6 week shutdown. Shutdown and repair costs were estimated at $70K.
Leaking or repair areas of the transformer were sandblasted to a SSPC-SP5 white metal finish. One Minute Epoxy was applied to plug all active leaks. Following confirmation that all leaks had stopped, repair areas were chemically cleaned using Cleaner Blend 300. Both FL10 and FL20 Primers were applied and each allowed to cure or dry for 15 minutes (Using both primers will improve Flexane 80 Putty adhesion from 25 pli to 50 pli). Flexane 80 Putty was applied to a 1/8" thickness, extending beyond the One Minute Epoxy by 1-2 inches. GoJo hand cleaner was used to smooth and sculpt Flexane 80 Putty following gel point. Devcon's repair cost was $4.5K with only a 3 day shutdown.