Recent Contracts PACKAGED MOTOR, GEAR AND LUBE SYSTEM FOR COMPRESSOR DRIVER RETROFIT A large Natural Gas Pipeline company currently operates a compressor station with a 12,000 HP gas turbine. With natural gas prices on the rise, our customer decided to replace the gas turbine with a 15,000 HP horsepower variable frequency motor to drive their rerated compressor. RMS manufactured a common baseplate for the motor and gearbox, provided a new common lube and seal system and packaged the train for supply to the jobsite. At the jobsite, a custom designed motor ventilation system will be installed to cool the motor. The new VFD with its associated switchgear and controls will be prepackaged into a new climate controlled building. LOW-EROSION RERATE AND REDESIGN OF FCCU EXPANDER A large U.S. refinery operates an Ex48 FCC expander that was previously rerated in 2001. Because of a change in FCC operating plans, the expander was significantly oversized. In 2005, RMS received an order to rerate this expander for current operating conditions and to redesign the flowpath to minimize erosion. To minimize rotor blade and stator erosion, RMS provided new-technology stator and rotor blade airfoil designs.

The RMS designs were optimized for erosion using extensive computational fluid dynamics (CFD) flow and erosion modeling. Our CFD modeling predicts the industry's lowest rotor blade erosion rate for this expander frame size. RMS also incorporated platform seals on the rotor blade to increase stress margins, and to reduce corrosion potential at the critical blade attachment area. To insure adequate cooling, RMS added wheelspace temperature monitoring. The full upgrade and rerate included the supply of the following major components by RMS: Rotor Blades Exhaust Casing Intake Casing Integral Stator Shroud Intermediate Casing Exhaust Diffuser Cooling & Sealing Console RMS has installed low-erosion technology in Ex38 and Ex48 FCC expanders. This technology can be applied to the full range of installed expanders. MAJOR UPRATE OF A GENERAL ELECTRIC STEAM TURBINE RMS has performed a major uprating of a General Electric steam turbine for a mid-West petroleum refiner. The turbine horsepower capability has been increased from 5170 to 7000 as well as an increase speed capability. The uprate was accomplished through a complete redesign of the flow path to allow the necessary higher steam flow to pass through the turbine. Valves, nozzles, diaphragms and rotor blades are replaced while retaining the original steam chest, casing and integral rotor. The rotor shaft end has been redesigned to convert it from keyed to hydraulic and has been welded and remachined through a qualified procedure. Analytical services include flow path aerodynamic redesign, structural and frequency analysis of the new nozzles and blades and rotor dynamic lateral critical analysis. The new components are being installed during a Fall outage.