6.14 Flashcards
How often will the habitability and sanitation inspection be done an by who?
quarterly
MDR
Medical department must be present during the clean up of what?
Clean ups, disinfection involving food service, living spaces and medical spaces
The CHT operates in what three modes
Restricted waters
At sea
in Port
Most commonly used sanitation device used by the Navy
Type II B Marine sanitation device
Functioning elements of the CHT systems are?
Collection
hold
Transfer
Collection element
(a) Soil drains or sewage (from toilets and urinals)
(b) Gray water drains (from showers, laundries, and galleys)
(c) Diverter valves which direct the wastewater over the side or to the holding tanks
Holding elements are sized to hold how much waste
sized t hold 12 hrs period depending on individual ship constraints
Transfer elements have and do what
Each tank is equipped with two sewage pumps which are connected in parallel to
discharge sewage and gray water to a receiving facility, Ship Waste Off-Loading
Barge (SWOB) or directly overboard.
What are manual pump?
Deactivates the pumps automatically when the low liquid level
reaches 10% of tank volume to maintain pump suction.
Untreated sewage tanks must be aerated if the hold how much?
2,000gal
explosive if not rated
What do you need to enter a space with H2S is present?
Airline respirator and full face mask
post a watch with SCBA out whenever MSD is open
Pump rooms require what?
Slight negative pressure (exhaust ventilation within 9 inches of deck).
Two Emergency Escape Breathing Devices (EEBD). (good for 10min)
(Health hazards associated with CHT)
Hydrogen sulfide
rotten egg smell
people who work with CHT must keep what up to date?
Basic immz
polio
TDAP
Required PPE for CHT workers
(a) Coveralls
(b) Rubber Boots
(c) Rubber Gloves
(d) Face Shields
(e) SCBA (when necessary
Procedure manual for CHT is
NAVSHIPS TECHNICAL MANUAL, Chapter 593
“POLLUTION CONTROL”.
steps for spill cleanup procedures?
-Thoroughly wash down with water and detergent.
-Medical, food service and berthing spaces must be disinfected with approved EPA disinfectants:
-Bilges contaminated with sewage must be pumped out, washed down with a fire
hose, and pumped out again.
-Potable water supply suspected of sewage contamination, must be secured,
disinfected and re-checked until the water is determined to be safe.
What are the approved EPA disinfectants
Germicides
Phenolic Type
Iodine type
Color coding requirements for CHT
Gold on the valves and operating levers
(excluding hand wheels of gauge valves located on gauge boards).
outside CHT fittings should be what color
same as surrounding area and clearly labeled
Overboard discharge of untreated sewage within us water and territorial seas is prohibited within what distance?
3nm
At sea mode operates how?
1) Sewage and gray waters, including those stored in holding tanks are
diverted or discharged overboard.
in port mode operates how?
Sewage and gray water is collected in holding tanks and discharged into a
sanitary sewer through sewer risers or Ship Waste Off Load Barges
(SWOB).
Restricted water mode operates how?
Sewage is collected and stored in holding tanks.
2) Gray water is discharged overboard via diverter valves
