Page 30 - Vessel Sanitation Program 2018 Construction Guidelines

VSP 2018 Construction Guidelines

Gravity drain: A drain fitting used to drain the body of water in a RECREATIONAL
WATER FACILITY by gravity and with no pump downstream of the fitting.

Gravity drainage system: A water collection system whereby a collection tank is
located between the RECREATIONAL WATER FACILITY and the suction pumps.

Gray water: Wastewater from galley EQUIPMENT and DECK DRAINS,
dishwashers, showers and baths, laundries, washbasins, DECK DRAINS, and
recirculated RECREATIONAL WATER FACILITIES. Gray water does not include
BLACK WATER or bilge water from the machinery spaces.

Gutterway: See SCUPPER.

Halogen: The group of elements including chlorine, bromine, and iodine used for
DISINFECTION of water.

Health hazard: An impairment that creates an actual hazard to the public health
through poisoning or through the spread of disease. For example, water quality that
creates an actual hazard to the public health through the spread of disease by
SEWAGE, industrial fluids, waste, etc. (e.g., sluice machine connection).

Hose bib connection vacuum breaker (HVB): A BACKFLOW PREVENTION
DEVICE that attaches directly to a hose bib by way of a threaded head. This device
uses a single check valve and vacuum breaker vent. It is a form of an AVB
specifically designed for a hose connection. A hose bib connection vacuum breaker is
not APPROVED for use under CONTINUOUS PRESSURE (e.g., when a shut-off
valve is located downstream from the device).

Interactive recreational water facility: An indoor or outdoor recreational water
facility that includes misting, jetting, waterfalls, or sprinkling features that involve
water recirculation systems that come into contact with bathers. Additional features or
facilities, such as decorations or fountains, will designate the facility as an interactive
RWF if there is any piping connected through the recirculation system. These
facilities may be zero depth. Fully or partially enclosed water slides are considered
interactive recreational water facilities.

Keel laying: The date at which construction identifiable with a specific ship begins
and when assembly of that ship comprises at least 50 tons or 1% of the estimated
mass of all structural material, whichever is less.

mg/L: Milligrams per liter, the metric equivalent of parts per million (ppm).

Noncorroding: Material that maintains its original surface characteristics through
prolonged influence by the use environment, FOOD contact, and normal use of
cleaning compounds and sanitizing solutions.

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