Page 85 - Vessel Sanitation Program 2018 Construction Guidelines
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VSP 2018 Construction Guidelines
22.6.2 Production Capacity
Provide POTABLE WATER production capacity of 120 liters (30 gallons) per
day per person for the maximum capacity of crew and passengers on the vessel.
22.7 Potable Water Storage Tanks
22.7.1 General Requirements
22.7.1.1 Independent of Vessel Shell
Ensure POTABLE WATER storage tanks are independent of the shell
of the vessel.
22.7.1.2 No Common Wall
Ensure POTABLE WATER storage tanks do not share a common wall
with other tanks containing nonpotable water or other liquids.
22.7.1.3 Cofferdam
Provide a 450-millimeter (18-inch) cofferdam above and between
POTABLE WATER TANKS and tanks that are not for storage of
POTABLE WATER and between POTABLE WATER TANKS and
the shell. Skin or double-bottom tanks are not allowed for POTABLE
WATER storage.
22.7.1.4 Deck Top
If the deck is the top of POTABLE WATER TANKS, these tanks must
be identified during the plan review. The shipyard will provide to
owners a written declaration of the tanks involved and drawings of the
areas that include these tanks.
22.7.1.5 Tanks with Nonpotable Liquid
Do not install tanks containing nonpotable liquid directly over
POTABLE WATER TANKS.
22.7.1.6 Coatings
Use APPROVED POTABLE WATER TANK coatings.
Follow all of the manufacturer’s recommendations for applying,
drying, and curing tank coatings.
Provide the following for tank coatings:
• Written documentation of approval from the certification
organization (independent of the coating manufacturer).
• Manufacturer’s recommendations for applying, drying, and
curing.
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