Manage CHT and Wastewater Surveillance Flashcards
CHT operates in what three modes
restricted waters
at sea
in port
what is the type of sanitation device installed on the majority of navy ships
Type II-B Marine Sanitation device
functional elements of the CHT system
collection
hold
transfer
responsibilities of the medical department with cht
conduct visual inspections
indoc of personnel concerning health risk associated with human waste and hygiene
on site advice
present during clean ups involving food service, living, and medical spaces
collection elements of the cht system
solid drains or sewage
gray water drains
diverter valves
hold elements of cht
tanks that are normally sized for 12 hour holding period depending on ships constraints
transfer elements of cht
sewage pumps
overboard and deck connection discharge w associated diverter and check valves
each tank is equipped with how many sewage pumps
2
sewage pumps discharge sewage and gray water to what places
receiving facility
Ships Waste Off Loading Barge
or directly overboard
two modes of pump actuation
manual mode
automatic mode
what is manual mode with sewage pumps
actuated independent of wastewater level
deactivates automatically when liquid level reaches 10 percent of tank volume to maintain a suction
what poses the greatest danger to ships and personnel in regards to cht
Hydrogen Sulfide (H2S)
tanks larger than what size must be aerated?
2,000 gallons
what must be in place any time the MSD system is opened
safety watch, with SCBA outside access.
what are some things that each pump room should have
slight negative pressure (exhaust vents within 9 inches of deck)
ventilation indicator light
2 EEBD
proper warning plates
