The times dispatch. [volume] (Richmond, Va.) 1903-1914, 1907-01-03

II 5l48TOIAlI &COS'Ts OF. OPERATION.
With electric plant.
Interest and depreciation Z. sci 1926 90
i Operating expenses. labor sup-
/ piles and maintenance. 22,735 90
/ = per cent. interest on si5o,too.. 5000 90
| Loss OF power In transmission,
/ to New Pump House. ......... $3.50 90
Line maintenance .............. $50 90
| Total Observation-Disclosures. $50, 200 90
1 Without electric plant:
$50 lamps at $b0....... .s42,5O0 90
Interest and depreciation on
$10B,O00 ACKNOWLEDGEMENTS. IL, $50 90
| Operation OF now machinery at
New Pump-Hous .......... 1000 90
Total Sob $50 90
! Difference In favor OF nbove.... $40 90
In explanation OF tho items contained
in the foregoing table. desire to point
out that the total fixed charges are the
same MS in Mr.. Tranord's report. while
the operating expenses, labor, supplies and
| maintenance are also the same. There
have been added under tho column with
Electric Plant two Items, one OF which
is $4,000, constituting interest at four per
cent. on $4,000 (tfe estimated value Of
the Old Pump-House property: the So
cond item OF $3.50, Ia the yearly loss In
transmission from the Old Pump House to
the New Pump-Housc IN the operation
of electric pumps at the latter point This
loss amounts to twenty per cent of the
40 horsepower noted under the caption
Power for Pumping" on page Q OF Mr..
Tranord's report. Twenty per cent OF 40
horsepower. at the cost of eight cents
per kilowatt hour. amounts to the value
indicated above. This constitutes a direct
charge against the operation OF tho cleo
trio plant which has heretofore not been
set forth.
Two hundred ana fifty dollars has been
introduced for line maintenance of the
transmission line to the New Pump
House.
In the column headed without Electric
Plant" there has been introduced an
item OF 5000 for the increased cost OF
operation at the New Pump House. for
the handling OF the new machinery pur-
chaHed and installed under the item OF
s1a5, 600. and, as mentioned above. the diff
ference between the two footings shows a
balance Of $40. which will be saved to
the city by not installing the proposed
electric plant
Cost OF plant:
In Mr.. Trafford's report, on page 8, is
given the generating equipment, as fol-
lows
Three water driven generators Of
200 kilowatts capacity and two
steam turbines OF 800 klowatts rated
capacity each, all having the usual
overload guarantees. The steam equip
ment Is equivalent to soo-horse- power.
On page 2 Of Mr.. Trafforl's report, the
total power required is stated to be-
Observation-Disclosures power, driving cleo
trio generators OF COO kilowatts capacity.
This arrangement of apparatus does not
provide for a spare unit when there Is
not sufficient water In the river to oper-
ate the water-wheels and the generators
connected to them; therefore. in check
ing UP the Items OF the plant, I have
added another generator of 800 kilowatts
capacity, driven by steam turbine.
On this basis. I present below in detail
the total cost OF the proposed station on
the same general lines as laid out in Mr..
Trafford's report:
Three 800 K. w. steam driven gem
orators ............... ..............s $500
Sn0-horse power boilers, at $l2...... 1900
Piping In the station, at 81. 800
Condensers and pumps, at &c.. $500
Switchboards .............. 1850
. Buildings. foundations and chimney 10000
Distribution system for arc light
Ing, including arc lamps and
transformers i...-...... ............ 5000
Three 200 X. IVY. generators and
water-Wheels ......--..S 1000
Hydraulic development, river work.
etc .......... ........................ 5000
10 per cent. for freight, installa-
ton and contingencies ............ s2.s4o'
per cent. for engineering. 11,470
Complete cost of electric plant ex-
Guiding cost OF real estate. which
property is now owned by the
city ............. ...... s2'5,Sl0
Further expenditures. amounting to
$780, 600. would have to be made. according
to the report OF the Water COMMITTEES,
for pumps. buildings wires and pps
lines. in order to utilize electrically oper-
ated pumps at the New Pump House.
The total expenditure by the city would
then be s362,Sl0
- COST OF OPERATION.
Following the table on page 8 Of Mr..
Tranord' s report. have divided the items
in my estimates so as to show the in
terest and sinking fund values as well as
the depreciation values. The total amount
of the fixed charges would then be s34.774
INTEREST AND SINKING FUND.
63 P. c. 81 P, c..
pump arc light
ing. ing.
Electric plant, s263,s11
per cent.................$s $500 $4,000
Water Department Imp,
$4,000, s per cent. 4,450
Old Pump-House proper
ty, $4,000, per cent. $3.50 2,23O
sls,5so s7.12o
DEPRECIATION.
Dams. buildings, ETC.,
$50, 900
Hydraulic machinery and
generators. $4,000. per
j I