If RAIPUR loco shed gets as much as possible WDP-4D (DUAL CAB) loco's then they should haul the following trains .......
12807/12808 SAMATA EXP
12843/12844 PURI-AHMEDABAD EXP
12145/12146 PURI-LTT EXP
18573/18574 VSKP -JODHPUR EXP...
more...
22847/22848 VSKP-LTT EXP
As these trains contains coaches more than 20....
instead twin WDM-3A it will be benficial & consume less fuel
RAILWAY should think of it........