flushed with high-pressure salt water for at
least 10 minutes before they are disconnected and
stored. Use of unapproved hoses and adaptors
is prohibited due to the possibility of cross-
connect ions with potable water lines. Under no
circumstances will sewage transfer hoses be
connected to potable water lines.
If wastewater is spilled onto the deck or pier
during discharge, the affected area must be
flushed with high-pressure salt water and
disinfected if necessary.
As previously stated, sewage transfer hoses
will normally be provided by the receiving
activity. Sewage hose handling and storage
facilities are designed to accommodate the repair,
maintenance, and storage of transfer hoses. All
hose handling and storage facilities are required
to incorporate the following into their design and
. Wooden racks and tables for handling and
storage are prohibited.
. All windows and doors must be adequately
screened to prevent entry of vectors.
. Back syphonage devices must be installed
on all potable water lines used for flushing and
cleaning sewage transfer hoses.
. Handwashing and shower facilities with
hot and cold water, dispensable soap, and single
use towels must be provided.
. All indoor work spaces must be well
. The sewage hose handling and storage
facility must be constructed, equipped, and
operated by Occupational Safety and Health
Administration (OSHA) standards.
SANITATION, AND SAFETY
Observing good personal hygiene and sanitary
practices is essential to prevent the spread of
contamination and the resulting outbreak of
disease aboard ship.
Personnel who come in contact with sewage
wastes must wear protective clothing and observe
the following rules to minimize contamination:
. Movement about the ship while wearing
contaminated clothing must be kept to a
. Contaminated clothing must be placed in
plastic bags and laundered as soon as possible
following cleanup operations.
. Rubber boots, gloves, oxygen breathing
apparatus (OBA) and other similar items must be
cleaned with hot water and detergent and rinsed
with an approved disinfectant solution. Person-
nel must thoroughly wash with soap and hot water
as soon as possible before engaging in other
Spaces that become contaminated with sewage
as a result of leaks or spills or sewage system
backflow must be thoroughly cleaned with
detergent and water. In addition, food service
spaces, berthing spaces, and medical areas
must be treated with an approved disinfectant.
Bilges contaminated with sewage wastes must
be pumped out, washed down, and pumped out
again. If potable water tanks form the floor of
the bilge, daily bacteriological monitoring will be
performed until it is certain that the tanks are not
contaminated. Furthermore, all potable water
tanks suspected of contamination must be secured
until the water is determined to be safe for
consumption. Signs are posted in spaces con-
taining MSD equipment warning against eating,
drinking, or smoking in these spaces.
Personnel who handle or connect sewage
transfer hoses will not handle potable water hoses
without first washing and changing into clean
clothing. No open flames, flashlights, or electrical
apparatus will be in or near holding tanks until
they have been certified gas-free. When the space
is certified gas-free, personnel may enter using an
approved OBA and wearing a safety harness and
tending line if only one person is entering
the space. If more than one person enters the
tank, they must keep each other in sight at all
The presence of MSDs and the associated
equipment and facilities aboard ship increase the
risk of exposure to untreated wastewater, which
in turn increases the potential for diseases
associated with human waste. Medical Depart-
ment representatives must become familiar with
the MSDs on board their ship and knowledgeable
in the proper personal hygiene practices and
decontamination procedures concerning the