Wednesday, March 18, 2009

To whom it may concern...
CALCULATION FOR LKG %GE
Eg: MNF = 2.5 l/s
= 2.5 x 3600
= 9000 l/hr
= 9000 / 1066 ( i.e : conn. = 1066 nos. )
= 8.44 l/c/hr
Eg: LNF = 4.08 l/c/hr ( 4.08 calculated during re-establishment process )
Therefore ; NNF = MNF – LNF
= 8.44 – 4.08
= 4.36 l/c/hr
Therefore ;
LEAKAGE = NNF x T x No. of Conn.
( T and no. of conn. Calculated during re-establishment process )
LEAKAGE = 4.36 (l/c/hr) x 17.97 (hr/d) x 1066 (nos.)
( i.e: T = 17.97 )
= 83,520 l/d
= 83,520 x 10 –3 m3/d
= 83.5 m3/d
LEAKAGE PERCENTAGE:
= 83.5 m3/d / 585 m3/d x 100 ( 585 m3/d = Av flow )
= 14.3 %

Notes:
% lk to m3 = av flow x % / 100 x day
m3/d to l/hr = x 1000/24
m3/d to l/s = x 1000/24 x 3600
l/hr to l/c/hr = l/hr / conn.
L/hr to l/km/hr = l/hr / pipe length