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 SHIP WASTE OFFLOAD BARGES
Section 4.
2.4.1 USE OF SHIP WASTE OFFLOAD (SWOB) BARGES. SWOB barges are provided to
collect sewage from ships at anchor, or from ships berthed in areas not
served by pier sewers. The barges are 106 feet long, 26 feet wide, and have
a full load draft of 6 feet. The capacity of the barge is 75,000 gallons.
a. SWOB Storage Tanks and Pumps. The storage tanks on the barge are
essentially identical to the shipboard CHT tanks. They have been outfitted
with special coatings, level indicators, and washdown systems. Further,
aerations systems have been installed to prevent the sewage from becoming
septic. Two marine centrifugal pumps will be provided for offloading the
barge. Each pump has a capacity of 160 gal/rein with a 40-foot total dis-
charge head.
b. SWOB Hose Connection. Hose connection procedures for the barge
will be similar to those for pier connections, and are discussed in Chapter
7, Section 4 of this manual. Actual operating procedures for the barge will
be covered in the operations manual delivered with the barge. NAVFACENGCOM
is developing a standard operating manual to be issued in 1980 for the sewage
SWOB's .
IT IS IMPERATIVE THAT ONLY BARGES OUTFITTED WITH THE SPECIAL EQUIPMENT
DISCUSSED ABOVE BE USED FOR SEWAGE COLLECTION. USE OF STANDARD OIL BARGES
FOR THIS PURPOSE WOULD LEAD TO POTENTIALLY DANGEROUS CONDITIONS.
2-13
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