| Dresser-Rand Introduces Advanced Digital Governor System |
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THE INTRODUCTION of an advanced digital governor system for safety critical emergency standby turbines used at nuclear power facilities worldwide has created new opportunities for Dresser-Rand's aftermarket parts and services business segment. Replacing the obsolete hydraulic controls with the latest digital technology and actuation system can help prevent serious crises at these power facilities. Dresser-Rand has aligned with Engine Systems, Incorporated (ESI), of Rocky Mount, North Carolina in the development of this state-of-art technology. For years, nuclear power plants worldwide have relied on steam turbines to provide power as pump drivers for emergency feedwater systems. While the first TerryTM solid-wheel steam turbine was installed in 1943, a majority of the current Terry turbines went online in the 1970s. During the past 30 years, technological advances have improved the performance and reliability of these systems.
At present, more than 440 nuclear reactors worldwide generate nearly 400,000 MW of electricity. As a safety critical component in plant operation, the emergency feedwater system remains on constant standby in the event of an emergent need for reactor cooling water. Feedwater systems, such as the auxiliary feedwater system in pressurized water reactors and reactor core isolation cooling (RCIC) and high-pressure coolant injection (HPCI) in boiled water reactors (BWR), provide additional makeup water to a plant's reactor following reactor shut down. Consequently, the reliability of the steam turbine that drives a plant's backup cooling supply cannot be overemphasized. download complete story PDF→ |
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