VO
Figure 2-88.
CHAPTER II, SECTION 3
Station 1524 - 60% Complete
for the vacuum pumps was supplied from a well
located on high ground because the water on the
reef was filled with sea moss.
The station was located and oriented in
accordance with Usercriteria. This required the
construction of man-made island and a causeway connecting to site Yvonne. This construction is further discussed under Causeways, Section IV of this chapter.
Powerfor Station 1524 was supplied by 3+
4,0 KV direct burial cable from a transformer
at Station 1818.09 and terminated in a power
center in Station 1524 consisting of primary
distribution oil fuse cutouts 5,000 volt, 3-phase,
100-amp gang-operated, and a 300 KVA oilfilled transformer with a 4,160-volt primary and
120/208-volt, 3-phase secondary. The unit also
consisted of a low voltage panel with three 300amp trip, 3-pole circuit breakers. This power
unit was installed in a transformer room. Other
equipment in the room consisted of two distribution panels, PA & PB, a signal cabinet, a
telephone cabinet, and an EG&G relay. Various
lines in conduit were provided for pumps, floodlights, general lighting signals, and phones.
Forms for the bases of the bent systems
were prefabricated then set on the reef at low
tide. Two transit mixers were removed from
their truck chassis and mounted on trailers.
This eliminated considerable down time for
maintenance of trucks and permitted working
during higher tide levels than would otherwise
have been possible.
All welders used on the pipe arrays were
first qualified for this work. The work was accomplished in two shifts. The first shift was
used to erect pipe bents, position and align the
pipe, then tack weld the interconnecting collars.
Masking tape was then placed over the joint
to keep out moisture; the night shift completed
the welding of the pipe system. When the sys-
tem was completed and tested, no leaks because
of weld failures occurred; a few leaks were
found in the pumping system. After the leaks
were repaired no difficulty was experienced in
maintaining the specified vacuum.
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