EP 1110-1-8
(Vol. 7)
31 July 03
8.
OPERATING RATES:
a.
Hourly Fuel Cost = (Engine Fuel Factor x hp x Fuel Cost/Gal)
(1) Prime Engine Fuel:
(0.045 x 3,730 hp x
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.49 /gal)
=
0.10 /hr
(2) Secondary Engine Fuel:
(0.039 x 2,475 hp x
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.49 /gal)
=
3.82 /hr
b.
Hourly Water, Lube, and Supply Cost = (WLS factor x Hourly Fuel Cost)
(1) Prime Engine WLS:
(0.22 x 0.10)
=
.02 /hr
(2) Secondary Engine WLS:
(0.22 x 3.82)
=
.64 /hr
c.
Hourly Repair Cost:
(1) EAF:
= (Economic Index for Year of Use / Economic Index for Acquisition Year)
(6022 <for 2003> / 3886 <for 1987>
=
1.550
(2) Hourly Repair Cost:
= (Total Plant Value x RPR x EAF x LAF) / Physical Life in hr
(,700,000.00 x 1.30 x 1.550 x 1.170) / 130,000 hr
=
.10 /hr
d.
Total Hourly Operating Cost: = (Fuel + WLS + Repairs)
(0.10 + .02 + 3.82 + .64 + .10)
=
7.68 /hr
e.
Monthly Operating Cost: = (Total Hourly Operating Cost x
Hours Worked per/Month)
(7.68 /hour x 500 hours/month)
=
3,840.00 /mo
9.
SUBTOTAL MONTHLY COST = (OWNERSHIP + OPERATING):
(,734.00 /month + 3,840.00 /month)
=
6,574.00 /mo
10. ESTIMATED ADDITIVE ITEMS (Sheet 1, Item k.):
a. Excessive Dredge Water (Gravel)
,000.00 /mo
b.
/mo
c.
/mo
d.
/mo
e.
/mo
Figure 4-2. Dredging Plant Ownership and Operating Rate Worksheet (Continued)
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