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Reliance Industries
The unit has been shut since the weekend, the sources said.
Reliance, owner of the world's biggest refining complex, has two crude units of similar capacity at the plant. It also operates a 580,000 bpd export-focused plant next to its old refinery.
The issue should be resolved soon, one of the sources said.
"Reliance's crude unit tripped on Saturday night... will take at least a week to be fully operational," a second source said, adding that the refinery's coker unit was also down.
No immediate comment was available from Reliance.
