Page 250 - Vessel Sanitation Program 2018 Operations Manual
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VSP 2018 Operations Manual
2. Add clean water to the clear container, cover, and shake.
3. Allow the container to rest undisturbed for 30 minutes.
4. Evaluate sample. If, after 30 minutes of settling, a measurable
layer of sediment is within or on top of the filter media or fine,
colored particles are suspended in the water, the organic
loading may be excessive. Consider media replacement.
5. Record results of filter inspection and sedimentation test in a
log.
Cartridge filters must be replaced based on inspection results or
manufacturer’s recommendations, whichever is sooner.
The granular filter media must be replaced at least every 6 months. Before
the new filter media is placed in the filter housing, the housing must be
scrubbed with an appropriate cleanser, rinsed, and disinfected.
DISINFECTION must be accomplished with an appropriate HALOGEN-
based DISINFECTANT at 1 ppm for 50 minutes, or an equivalent CT
VALUE. Record the filter replacement date and cleaning and
DISINFECTION of the filter housing in a log. The log must include the
DISINFECTANT residual and contact time or CT VALUE.
Filter pressure gauges and valves must be replaced when they are
defective.
The operating manuals for all components such as filters, pumps,
HALOGEN and pH control EQUIPMENT, and UV DISINFECTION
systems must be maintained aboard the vessel in a location ACCESSIBLE
to crew members who are responsible for the operation and maintenance
of these facilities.
13.8.3.5 Halogen and pH Control
Automated HALOGEN dosing and pH control systems must be installed
and maintained.
Halogenation must be by use of chlorine or bromine. A free residual of
HALOGEN must be maintained between 3.0-10.0 ppm for chlorine and
4.0-10.0 ppm for bromine.
The pH levels must be maintained between 7.2 and 7.6.
13.8.3.6 UV Disinfection
A UV DISINFECTION system must be installed after filtration and before
HALOGEN-based DISINFECTION.
The UV DISINFECTION system must be maintained at an intensity that
inactivates Cryptosporidium parvum and Giardia.
Annex 13.8: Baby-Only Water Facility 197
