Page 91 - Vessel Sanitation Program 2018 Construction Guidelines

VSP 2018 Construction Guidelines

This does not include the following:
• Discharges from DECK DRAINS on open decks.
• Cooling lines with no chemical treatment.
• Alarmed vent/overflow pipes for GRAY WATER, treated GRAY or
BLACK WATER, and ballast tank with an automatic shutoff system for
SANITARY SEAWATER intake. These alarms must be visual and
audible and must sound in a space that is continuously occupied.
• Alarmed emergency bilge discharge lines with an automatic shutoff
system for SANITARY SEAWATER intake. These alarms must be
visual and audible and must sound in a space that is continuously
occupied. GRAY and BLACK WATER cannot be able to be transferred
to the bilge with this type of design.
• Alarmed emergency ballast discharge line with an automatic shutoff
system for SANITARY SEAWATER intake. These alarms must be
visual and audible and must sound in a space that is continuously
occupied.
• Discharges from the anchor chain locker are allowed forward of the sea
chest if the chain is rinsed/cleaned only with sea water.
• Alarmed vent/overflow pipes for heeling tanks and laundry water
storage tanks with an automatic shutoff system for SANITARY
SEAWATER intake are allowed. These alarms must be visual and
audible and must sound in a space that is continuously occupied.

22.13.2 Direct Connections
Use only direct connections from the evaporators and reverse osmosis plants to
the POTABLE WATER system.

22.13.3 Potable and Nonpotable Water Systems
If an evaporator or reverse osmosis plant makes water for both the POTABLE
WATER system and a nonpotable water system, install an AIR GAP or RP
ASSEMBLY on the line supplying the nonpotable water system.

Onboard water sources such as TECHNICAL WATER, air conditioning
condensate, or wastewater of any kind (treated or untreated) are not allowed for
POTABLE WATER production.

22.13.4 Instructions
Post narrative, step-by-step operating instructions for manually operated
evaporators and for any reverse osmosis plants near the units.

22.13.5 Discharge to Waste
Ensure water production units connected to the POTABLE WATER system
have the ability to discharge to waste if the distillate is not fit for use.

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