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(viii) The tank shall be fitted with an approved content gauge
unit. Provide an accurate measuring device for the
calibration of the content gauge and a supporting stand
which shall be fabricated form angle iron complete with
strut and tie members as may be deemed necessary.
They shall be designed in such a way that it will be
possible to remove the tank without first lifting it. A
mild steel oil drip tray welded to the angle bracket or
stand shall also be included. Exact height of the frame
shall be determined to suit site requirement.
(c)
Painting of the Daily Service Fuel Tank
All parts of the exterior surfaces of the tank shall be
thoroughly cleaned by mechanical means to remove all rust,
mill scale, grease and other foreign matters to achieve a bright,
rust free and dry surface and then painted with one coat of zinc
rich primer, one coat of epoxy based under coat and two
finishing coats of approved paint.
The interior surface of the tank shall be thoroughly dried out
and applied with a thick coat of linseed oil to prevent rusting.
C12.7.3
Fuel Transfer Pumping System
(a)
Electrical Fuel Transfer Pumps
Rotary fuel transfer pumps complete with all necessary
accessories including strainers, check valves, gate valves etc.
shall be provided.
(i)
The pumps shall be positive displacement type, with
high quality cast iron body, high tensile steel shafts and
built in internal relief valve.
(ii)
Each pump shall be capable of delivering 'ultra low
sulphur' diesel fuel oil at 300 kPa 950 rpm maximum
with capacity. For each pair of pumps a manual switch
shall be provided to select the pump running mode as
"duty" or "standby" respectively.
(iii)
The coupling motor shall be flame proof 3 phase, 50 Hz,
380V with no volt release and overload protection. It
shall have a manual/auto/off switch with connections
for remote start/stop operation by the level switch at the
daily service tank. The duty pump shall be actuated
when the fuel level in the daily service tank fall below
30% of the tank capacity, cut off automatically when
the tank is 90% full. The pumps shall also be
inoperative when the fuel level in the underground
storage tank falls below a pre-set level.
Section C12
Page 19 of 31
EE_GS
2012 Edition