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1. Low vacuum of -0.72 ksc had been troubling TG-2 at VSP for 7 years despite various troubleshooting efforts. 2. Using a helium detection kit from BHEL, major air leaks were found at the vertical parting plane between the HP and LP casings (20,000 ppm) and the HP flash tank vent bellow (500 ppm). 3. During a unit shutdown, VSP addressed the identified leak points, resulting in significantly improved vacuum of -0.83 ksc after restarting the unit.

Author

Charu Chhabra

Language

EN