Challenges in generation at naptha jahakri power station due to heavy silt in Satluj River, India
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SILT PROBLEM EXPERIENCED-CONTD.
EROSION AFTER 1692 HOURS OF OPERATION, SILT
LOAD PASSED THROUGH TURBINE 8.1 LAC TONS
UNIT NO. 6
NEW RUNNER
NEW RUNNER
DAMAGES BY SILT- EXPERIENCED AT NJPS
RUNNER WITH CRACKED
RUNNER WITH CRACKED
VANES AT OUTLET 2004
VANES AT OUTLET 2004
ERODED RUNNER 2005
ERODED RUNNER 2005
DAMAGES BY SILT- EXPERIENCED AT NJPS
UNCOATED REPAIRED RUNNERS 2005
UNCOATED REPAIRED RUNNERS 2005
DAMAGES BY SILT- EXPERIENCED AT NJPS
Soft Coated Runner
Soft Coated Runner
2005
2005
Eroded soft coated
Eroded soft coated
runner after high silt
runner after high silt
season
season
DAMAGES BY SILT- EXPERIENCED AT NJPS
Hard coated Guide Vane
Hard coated Guide Vane
DAMAGES BY SILT- EXPERIENCED AT NJPS
Coated Guide apparatus after
Coated Guide apparatus after
erosion Nov. 2005 (Guide
erosion Nov. 2005 (Guide
Vane, Cheek Plate & Wear
Vane, Cheek Plate & Wear
Ring)
Ring)
Coated Guide apparatus
Coated Guide apparatus
(new) being assembled at
(new) being assembled at
site Oct.2006 (Guide Vane,
site Oct.2006 (Guide Vane,
Cheek Plate & Wear Ring)
Cheek Plate & Wear Ring)
DAMAGES BY SILT- EXPERIENCED AT NJPS
Coated guide vane after
Coated guide vane after
erosion
erosion
Coated guide vane after
Coated guide vane after
erosion
erosion
DAMAGES BY SILT- EXPERIENCED AT NJPS
Cheek plate GV Bush &
Cheek plate GV Bush &
Turbine cover sleeve
Turbine cover sleeve
after erosion Dec. 2005
after erosion Dec. 2005
Cheek plate GV Bush &
Cheek plate GV Bush &
Turbine cover sleeve
Turbine cover sleeve
(new) being assembled
(new) being assembled
at site Oct. 2006
at site Oct. 2006
DAMAGES BY SILT- EXPERIENCED AT NJPS
New Uncoated upper
New Uncoated upper
labyrinth seals Oct. 2005
labyrinth seals Oct. 2005
New Hard Coated Upper
New Hard Coated Upper
Labyrinth Seal Oct. 2006
Labyrinth Seal Oct. 2006
DAMAGES BY SILT- EXPERIENCED AT NJPS