r - part - usaid

of derivering thzt fuel. Xo equivalent costs are associated
with a well equipped with a 3and pump.
The mast significant e:exsnt of t his total is the cost of
fuel used for punping, being a?proximateXy 75% and 60% of the
total in the Bay Region and Central Range respectively. The
average annual fuel cost for each wcLZ site of $1,322 is based
upon consumption of 3,396 iirexs at a current cost of USS0.39
per 1 iter,
Accurate data on f ~ei s~pplied tc well sites is scarce.
Appendix 4.4.5 shows the reported value of fuel delivered to
pre-project weli sires in the Bay Region during 1984. The
figures available are for the three months of the Jilaal dry
season, January to Karch, am3 for the whole year, 1984. Though
the number 02 cases in Ikis saaple i s not sufficient to allow
firm conclusions to be drawn. a linear regression suggests that
these are reliable figures. It is assumed that for the three
months of the Zilaal season the puzps are operated every day for
90 days. Based upon the fuel consunption for a full year , it
can be assued t%at che pumps are operated, on average, for
eight months of each year.
The fuel consumption rate of a diesel pump is obtained from
the following Eom.ula (?ape, 1982, p. 19) :-
C = 0.002635 x D x V x P,
%here:
C = Operating costs - to be determined for 1 hour of operation
D = Depth of we31 - ~ssumed to be 90 n.
V = Volume of wzter req- ired - known - 12 cm/haur
P = Pxice of diesel f$/ltr) $0.39
Therefore cost = SC. 69 per hour,
representing 1*77 litres of fuel per hour.
From Appendix 4.2.5, the average for the three months
supply, Sh.9,364, costhg at :haz time approximately Sh.8 per
lirer, represents l.172 liters. If the puxp is used every day
for 90 days, t -~ls
represents 33 liters per day. At 1.77 liters
per kour, %his neans the p~:mp is used far 8 hours each day.
There appears to be corsiderabfe variation about this nean.
Bowever, the datz is ccnsidexed reliable enough for program
costing purposes.
Fsel is assuaed to be delivered by ?