Since I stay near Tiruvottiyur ,no such line is existing 200% sure .
From korukpet to Athipet Pudu nagar ,4 line are there all Electrified traction .
2 lines used for mail /exp ,3 line is used for train coming from korukpet side and joining mas - gdr line .
4 th line is used fir inwards movement of good train...
more... .
Platforn at tvtr ,eEnnnore,Korokpet are used for stabling of s fast trains as BBQ has limitation on no of Raje's which can be stablrm
ON mas TBM section ,trains are stabled at tamabaram ,CGL ,paxvsnthsngal ,numgsmpakkam ,Chetpey ( 5 th line ),Near sanatoriom stn .