Page 27 - Vessel Sanitation Program 2018 Construction Guidelines

VSP 2018 Construction Guidelines

Cross-connection: An actual or potential connection or structural arrangement
between a POTABLE WATER system and any other source or system through which
it is possible to introduce into any part of the POTABLE WATER system any used
water, industrial fluid, gas, or substance other than the intended POTABLE WATER
with which the system is supplied.

Deck drain: The physical connection between decks, SCUPPERS, or DECK SINKS
and the GRAY WATER or BLACK WATER systems.

Deckhead: The deck overhead covering the ceiling area constructed from several
panels, also known as the visible part of the ceiling.

Deck sink: A sink recessed into the deck and sized to contain waste liquids from
tilting kettles and pans.

Disinfection: A process (physical or chemical) that destroys many or all pathogenic
microorganisms, except bacterial and mycotic spores, on inanimate objects.

Distillate water lines: Pipes carrying water condensed from the evaporators and that
may be directed to the POTABLE WATER system. This is the VSP definition for
pipe striping purposes.

Double check (DC) valve assembly: A BACKFLOW PREVENTION ASSEMBLY
consisting of two internally loaded, independently operating check valves located
between two resilient-seated shutoff valves. These assemblies include four resilient-
seated test cocks. These devices do not have an intermediate vent to the atmosphere
and are not APPROVED for use on CROSS-CONNECTIONS to the POTABLE
WATER system of cruise vessels. VSP accepts only vented BACKFLOW
PREVENTION DEVICES.

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