24
CAUTION:
BEFORE THE SYSTEM IS PUT INTO OPERATION OR TESTED ALL PIPEWORK
MUST BE FLUSHED AND CLEARED FROM DIRT OR FOREIGN MATTER.
Reference drawings
Dimensional drawing and parts list ballast skid Mark 6M
0806-1288
Schematic installation diagram Oilcon Monitor System with 1x dP/I
transmitter
Mark
6
0806-8035
Bulkhead penetration and piping diagram Mark 6M
0806-8038
6.3.1 Sample pump unit
The sample pump unit comprises a pump, bulkhead mounting flange with integral gastight shaft seal
and a flange mounted motor. For this purpose a hole with a diameter of 290 mm is to be made in
the bulkhead wall. The pump unit shall be fitted to the bulkhead utilising the welding ring as supplied
with the pump. This ring shall be welded to the bulkhead wall.
For the location of this hole verify with the pump dimensional drawing that there will be no obstacles,
and that the pump unit can be accessed for maintenance. Maintain sufficient free space around the
motor for free air circulation to cool the motor.
If possible, the unit should be located below all proposed sampling points and as central to these
locations as possible. Care should be taken to ensure that under all operational circumstances a
zero or positive pressure is present at the suction side of the pump.
The joints of the suction line must be airtight, otherwise air leakage will occur causing reduced
pumping and monitoring performance. If air leakage is considerable, the pump may fail to prime or
pump at all.
It will be observed that a length restriction has been placed on the sample pipes (refer to section
6.7.4 pipe work response time calculation) for two reasons:
a. To ensure that the total response time of the system is less than 40 seconds, as required by
legislation. In fact, since the instrument response time is less than 10.8 seconds and the
sample velocity in the specified pipework is 0.9 m/s, there is some margin here.
b. To ensure that the sample pump is not faced with excessive negative suction pressure due
to high pipe losses.
6.3.2 Installation of the sample pump
WARNING:
IN THE CASE OF AN INSTALLATION AT SEA, WHERE THE PUMP ROOM
CONSTITUTES A HAZARDOUS AREA, PRECAUTIONS FOR HOT WORK AS LAID
DOWN BY THE OWNER MUST BE STRICTLY OBSERVED.
At the selected location a hole with a diameter of 290 mm is to be made in the bulkhead wall. The
installer should note that in some circumstance it may be necessary to construct a “top-hat” device,
to artificially extend the pump room/engine room bulkhead around the pump/motor assembly while
the hole is being cut and the mounting flange fitted.
Weld-on the welding ring; make sure that the bolt holes are in X-position. These holes are not to be
in + - position!
The gasket shall be placed in between the pump main plate and the welded ring.
For easy installation do not fit the oil reservoir yet.
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