SER have only 1 workshop at KHARAGPUR. So, POH of all coaches of SANTRAGACHI,HATIA, TATA CDO and wheelset, suspension,etc sent through a head open coach and these are attached with below trains:
1. FROM KHARAGPUR WORKSHOP to TATA CDO the
POHED COACHES and WHEELS,suspension, etc coach are attached to the end of Tatanagar-Kharagpur pgr.
2. From KHARAGPUR workshop to HATIA...
more... CDO the POHED COACHES and Wheels, suspension, etc are attached to the end of Hatia-Kharagpur pgr
3. From KHARAGPUR WORKSHOP to Santragachi CDO the POHED coaches and wheels suspension, etc are attached to the end of Howrah-Bhadrak pgr/ Howrah-Puri Passenger.