The Semi-weekly leader. (Brookhaven, Miss.) 1905-1941, 1921-08-06

/ night The reservoirs were kept fll-
ed with only the deep we'll Is HIP.
pump running, with an occasional
supplementary run of the air driven
wells.
At that time the use Of both boil
ers was required in order that COM
plete shutdown might be avoided in
case Of failure of one Of the boilers,
as we'll as a matter of economy since
these boilers are prone to deliver wet
steam when steaming rapidly.
When cleaning and repairing were
necessary part of the commercial
load was suspended at night and the
night peak carried on the remaining
boiler by forcing. At the present this
condition, as to boilers has been
bgreatly emphasized because Of the
general increase in the use of water,
light and power. One Of the nota-
able increases being due to the use
Of the air wells which require fifty
HIP. Of the station capacity, and at
the same time do not equal the vol
ume Of water supplied by the Is HIP.
deep well pump.
The general increase in load makes
1t necessary to operate two engines
a good portion of the day and night.
BY agreement we have kept our
larger power consumers under ar
rangement whereby we can be re-
lieved from this part of the load in
emergency, always keeping to the
| principle of service to the light and
water patrons first. However. from
conditions already described showing
the demands Of this service alone,
it should be apparent that the e.
Equipment is no longer adequate for
the purpose. No mention has been
made Of the use to which the re-
naming small engine is put, and it
! will here be explained that of the two
small engines, viz: the Corliss, and
Four Valve that the latter in its
original form proved SO unsatisfact-
ory that 1t was for long time a..
bandoned but on account Of growing
demands on the plant more than a
year ago, it seemed advisable to un-
dertake some remodeling, with view
OF getting service out of this unit
until such time as a general enlarge
ment of the plant could be under
| taken.
After much experimenting and some
expense this engine was put in SER
vice as relay and is used in con-
nectton with the CorIiss unit when
cleaning and adjustments are neces-
sarylon the 500 HIP. unit. The com
binea capacity however of the two
small engines is not sufficient to car
ry the night lighting load or all of
the day power load.
ItEis evident from the foregoing
thattwe are dependent to large de-
greeE for lighting service as well as
Eall other service, on this 500 HIP.
unit, and therefore knowledge of
its condition should be of interest.
CONDITION AND CAPACITY OF
MACHINERY.
At the time of its purchase eleven
years ago, this engine was of ample
capacity, with considerable to spare,
over lighting peaks and was design
ed for economy in the use of fuel.
As type it has not until recently
been superseded. and on account of
this feature as well as the fact the
load outgrew the smaller units it has
been in almost constant use since its
installation, and now needs extern
sive repairs which if postponed much
longer will result in poor service and
greater expense.
In order that this unit be restor-
ed to it's original state of reliability
and economical operation thorough
overhauling would be necessary and
would require four to five weeks
with possible cost of two thousand
dollars besides the loss of time.
The electric generator attached to
this engine is now in such weaken
ed state of insulation that electrical
breakdowns may be expected without
worning, and in fact two such breaks
have recently occurred, which fortu-
nately were OF comparatively small
extent and were bridged over and la
ter repaired without inconvenience to
the lighting patrons.
| The four valve engine is equippd
with an lectric generator in SINH
lar condition and like the larger
one needs considerable repairs.
The generator attached to the Cor
liss engine is in excellent condition
being practically new
Taking into consideration that the
Corliss engine was built about %
years ago for much lower boiler pres
sures than we now carry and the fact
that the steam economy of both these
small units is much lower than larg-
er and more suitable units would be
extensive repairs would not be JUS
/ tified.
4 The total capacity Of the wells
when they are being pumped is a.
bout $50 g.p.m. delivered into the
'eservoirs and the total capacity Of
the three force pumps delivering to
the water mains is 1000 g.p.m. Dur
ing a considerable confagration four
or more lines Of hose would doubt
less be in service and this together
with the water which escapes thru
, other outlets at much accelerated
} rate wherN fire pressure is put on
would call for the greatest speed OF
! which all three Of these pumps are
capable and means that the. two hum
dred and fifty thousand to three hun