Post on 06-Jul-2018
8/17/2019 Penstock Filling Through Punps
1/3
FILLING
Velocity restriction for lling of penstock as per
Penstock lling procedure- 6m/sArea of !! N" #ypass pipe$ %&'(6m'
)isc*arge restriction for penstock lling
+, A V, %.(m/s , (!!! Lpm
0ingle Penstock 1apacity , &.!!! m
2ime for lling penstock 3(!!! Lpm 4Penstockcapacity
*rs 5 ' *rs5 &6 *rs5 *rs , days
47ori8ontal9 47old9 4Inclined9 47old9 appro:
8/17/2019 Penstock Filling Through Punps
2/3
FILLING
• 1)0 *as '' mtr *ead pumps of capacity &'!!Lpm i%e&.' m/day
• ' stage pumping re;uired
• &st stage- (al>e i%e =L6'! ,&&..( m
• 2ime re;uired for lling decanting c*am#er upto =L
6'! , &&..(/&.' , &!( days• &! pumps can ll decanting c*am#er upto =L 6'! in
appro: && days
• For ' stage pumping$ ?e;uirement of pumps is '!
8/17/2019 Penstock Filling Through Punps
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)?AINING
• )raining of penstock t*roug* !! N" penstock drain pipe atpo@er*ouse
•
7ead at penstock drain pipe at =L