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TMR Over Speed Protection System Gulf Refinery


PROJECT OVERVIEW:

GCS was contracted to provide new control system and overspeed protection on all refinery API612 (Steam Turbines Special-Purpose Application) classified rotating equipment. The new system needed to be SIL3 compliant and 2oo3 voted, so the mechanical overspeed trip device could be eliminated.

APPLICATION
  • Petrochemical Refinery
TURBINES
  • TurboDyne Turbine Compressor
CONTROL TECHNOLOGIES
  • Woodward Peak 150 Digital Governor - Speed Control

  • Woodward ProTech TPS Electronic 2oo3 voted Over Speed protection

  • Woodward QuickTrip 2oo3 voted trip valve

GCS was contracted to provide new control system and overspeed protection on all refinery API612
(Steam Turbines Special-Purpose Application) classified rotating equipment. The new system needed to be
SIL3 compliant and 2oo3 voted, so the mechanical overspeed trip device could be eliminated.

SYSTEM ISSUES:
The existing trip system used parallel pneumatic dump valves that had become unreliable and were NOT capable of online testing or online repair. Also, the Woodward Peak 150 governor was over 10 years old and the refinery wanted to replace with another Peak 150 due to the familiarity of the control to operations and the reliability displayed by the control.

New System Overview

GCS built an integrated control enclosure housing the Woodward Peak 150 and Woodward ProTech TPS, and utilized the Woodward QuickTrip as the trip system oil dump valve. Having GCS integrating the Woodward products as an engineering project ensured the installation, done by the customers 3rd party contractor, went smoothly which streamlined the commissioning process. This benefited the customer since typically the process charge compressors are the last equipment to start and by not experiencing delays in the commissioning of the new control system the plant could get back on line minimizing any delay.




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