Earlier, Rajeev Mishra, GM of Eastern Railways, was holding additional charge of ECR, an ECR statement said.
Gayen was earlier working as Chief Mechanical Engineer of South Eastern Railway at Kolkata, the statement said.
A 1979 batch officer of Indian Railway Service for Mechanical Engineers (IRSME), he has worked on several important posts.
ECR comprises of five divisions -- Danapur, Dhanbad, Mughalsarai, Samastipur and Sonepur.
