A contract worker sustained 90% burn injuries in an industrial accident at the Visakhapatnam Steel Plant boiler unit, sparking trade union protests over safety. Visakhapatnam: In a tragic incident, a contract worker suffered serious burn injuries when hot water spilled over him at Visakhapatnam Steel Plant.The incident occurred at the Feed Regulating Station (FRS) area when the contract worker was on duty, working on the FD-225 valve in FRS of boiler-4 when.