The coaches are placed at Tikiapara EMU car shed in the South Eastern Railway zone.
Earlier, the state reported 12 new positive coronavirus cases. The total number of active cases in the state now stands at 80.
This comes in the backdrop of the Indian Railways' earlier announcement of suspending the running of all passenger trains except for the operations of good trains carrying essential supplies amid the worst health crisis witnessed by the nation.
It also said earlier this week that it has converted 2,500 of its train coaches into isolation wards, achieving almost half of its target of making 5,000 such coaches, as part of government's efforts to combat coronavirus.
( With inputs from ANI )