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

3/3

)?AINING

• )raining of penstock t*roug* !! N" penstock drain pipe atpo@er*ouse

•

7ead at penstock drain pipe at =L