In 1956 Standard-Vacuum Oil Company built fluid catalytic-cracking plants in two Asian refineries, using four identical 3000-hp gas-fired turbines to drive main air blowers and gas compressors. A newly designed, unproven gas turbine was purchased for this application. This paper describes the major field problems encountered and modifications necessary to put the unit into commercial operation. Severe blade damage due to sulfur in fuel gas, the fouling of combustor air baffles, thrust bearing failure, axial-compressor fouling, and the effects of high ambient temperatures were experienced and corrected by the co-operative effort of manufacturer’s and owner’s overseas field personnel.

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