That's true. In Dongargarh-Raigarh stretch, at least 3 trains mostly MEMUs stay cancelled everyday. Is it because of lack of maintenance facility? IMO, They should accommodate MEMU rakes at the BIA ELS. Plus there are many infra works, like third line linking, FOBs, ROBs, underpasses, etc. for which blocks are being taken due to which slow trains like passengers are cancelled. BTW, SECR has done a commendable job of raising heights of most of platforms for MEMUs.