Siemens Energy has won a significant order from Oil and Natural Gas Corporation Limited (ONGC) in India to overhaul 18 units of RT48S & RT56 power turbines of Siemens fleet of aeroderivative gas turbines driven by Industrial AVON & Industrial RB211 gas generators along with installation and commissioning services.
The overhauling incorporates Siemens' Zero Hour Overhaul services, which will be first of its kind in India and involves the overhaul of power turbines to zero-hour status. Traditionally, ONGC's power turbines undergo a Time Continued Overhaul where, after overhauling, the units can run for another 50,000 hours before the next overhaul.
Under the Zero Hour Overhaul concept, the turbines will be brought to zero-hour status. The turbine will perform almost as new – capable of safe and reliable operation for another 100,000 hours before the next overhaul. This will help reduce downtime and improve productivity by eliminating at least one intermediate overhaul.