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VOL. 11, ISSUE 9 (2024)
Analysis of steam residue use during blackout to run steam turbine drive emergency lube oil pump at pt. puncakjaya power plant
Authors
Silwanus, Sulardjaka, Singgih Saptadi
Abstract
The demand for electricity in Indonesia is increasing due to rapid
development of industry, real estate, and technology, coupled with population
growth. As a major electricity consumer, PT Freeport Indonesia significantly
depends on electricity supplies from PT Puncak Jaya Power with a capacity of 3
x 75 MW. In steam turbine power plant (PLTU), the conversion of heat to
mechanical energy unavoidably generates friction that causes bearing damage. To
mitigate this issue, there is a need to optimize the lubricating system. A
recent failure of DC pump in emergency lubrication system has led to
significant damage to turbine and generator bearing, causing three months of
inactivity. Therefore, this research proposed harnessing the remaining energy from
steam drum to power a small turbine that was directly connected to the
lubrication pump. Steam drum held a significant amount of thermal energy, with
a mean of 1463 BTU/lb. This capacity was enough to run the small turbine for
about 4 hours, typically long enough for AC power restoration. As a backup,
battery-operated emergency pump was used particularly when the heating capacity
of steam drum was insufficient. This innovative system does not interfere with
recovery or startup procedure. Although the initial investment was substantial,
operational costs were cheaper compared to traditional emergency pump.
Consequently, this solution provided superior dependability and effectiveness
in lubricating systems for steam turbine.
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Pages:20-26
How to cite this article:
Silwanus, Sulardjaka, Singgih Saptadi "Analysis of steam residue use during blackout to run steam turbine drive emergency lube oil pump at pt. puncakjaya power plant". International Journal of Multidisciplinary Research and Development, Vol 11, Issue 9, 2024, Pages 20-26
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