RVNL receives LoA for upgradation of electric traction system of Wardha-Ballarshah rail section in Maharashtra July 16, 2024 | Awarded, Project Updates Rail Vikas Nigam Limited (RVNL) has received the Letter of Acceptance (LoA) for a contract worth Rs 1,325.92 million for Overhead Equipment (OHE).. This content is restricted.