During periods of low ambient temperature, a 250 MW power station experienced recurring premature lifting and failure to reseat of the Pressure Safety Relief Valve (PSRV) downstream of the Light Distillate Oil (LDO) forwarding pumps while running on partial load. To resolve this without forcing a shutdown, operators were instructed to immediately increase the gas turbine’s load by 10 MW. This surge in load accelerated fuel demand and instantly lowered the downstream LDO piping pressure, allowing the PSRV to safely close and reseat. Once stabilized, the turbine was gradually returned to its original load setpoint.
#PowerGeneration #GasTurbines #Frame9E #PowerPlantOperations #Troubleshooting #ThermalPower #AssetManagement #processengineering
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Disclaimer:
- OEM manuals and approved plant procedures take precedence.
- Only authorized personnel should perform the procedure.
Nawaz Ali Lakho is a power-generation professional and project-management consultant with more than 33 years of experience across thermal, nuclear, gas-turbine, steam-turbine, and combined-cycle power plants. His career encompasses plant operations, maintenance, commissioning, troubleshooting, asset management, and the leadership of multidisciplinary teams of more than 200 personnel.
His hands-on experience includes GE Frame 9E and 6FA and Alstom GT13DM gas turbines; Mitsubishi, GE, and Fuji steam turbines; heat-recovery steam generators; supercritical boilers; and major plant-control platforms from GE, ABB, Emerson, and Siemens. He has participated in cold and hot commissioning, major overhauls, hot-gas-path inspections, and combustion inspections at power facilities ranging from 150 MW to 586 MW.
At Global Power News, Nawaz shares field-informed O&M case studies, technical guidance, equipment insights, and analysis of power systems and energy infrastructure. Connect with him on LinkedIn.
International Experience: Have worked around the world specially, Pakistan, Iraq, Saudi Arabia, UAE, Angola, England and Nigeria.
Disclaimer: Articles are developed using internet research, professional field experience, and AI assistance. While every effort is made to ensure accuracy, the content may contain estimates, projections, or assumptions. The author assumes no liability for technical or computational discrepancies.