It also evacuated 66 of the 134 people working on the platform

"We are working to resolve the power generation issue," BP said in a statement.

ETAP?s production is between 30,000 and 35,000 barrels of oil equivalent per day. It feeds into the Forties Pipeline System and the CATS gas terminal.

(Reporting by Shadia Nasralla. Editing by Jane Merriman)