6.14 Manage CHT and Wastewater Surveillance Program Flashcards
What chapter of the P5010 is waste water?
Chapter 7
Medical Department Responsibilities
visual inspection of Marine Sanitation Devices
Indoc of personnel (training periodic)
Provide on site advice
must be present during cleanups
Three modes of CHT
Restricted waters
at sea
in port
CHT system on most ships?
Type II-B MSD
Collection element
soil drains or sewage from toilets
gray water drains
diverter valves
Hold element
retain sewage during transit
- 12 hour holding period
Transfer element
Sewage pumps
overboard and deck
SWOB
Ship Waste Off Loading Barge (SWOB)
Two types of transfer modes
Manual
automatic
Manual transfer mode
activated independently
Automatic transfer mode
low level stop pump at 10% (keeps primed)
30% signals duty pump
60% signals standby pump
80% visual and audible alarm activated
Hydrogen Sulfide
poses the greatest danger to ships and personnel
Gas can become what?
explosive
H2S is heavier than
air
pump rooms should have
slight negative pressure
ventilation indicator
two Emergency Escape Breathing Devices
Who do all leaks, spills or other sources of contamination get reported to?
Engineering officer, Exectutive Officer, SMDR
Toxic gases
Hydrogen sulfide
methane
ammonia
carbon dioxide
What does hydrogen sulfide smell like?
rotten eggs
Personnel who are in contact with wastewater must be current on which imms?
Polio
Tetanus Diptheria
Required PPE
coveralls rubber boots rubber gloves face shields SCBA
How do you clean contaminated clothing?
hot water and soap for laundering
Where are the safety procedures listed?
NAVSHIPS TECHNICAL MANUAL
CH 593
“POLLUTION CONTROL”
Approved EPA disinfectants
germicides
- phenolic type
- iodine type
What do you do if a bilges is contaminated?
sewage pumped out, washed down with a fire hose and pumped out again
What do you do if potable water supply is contaminated?
must be secured
disinfected
rechecked until the water is determined safe
Ships interior color for CHT systems
Gold
- valve handles
- operating levers
Wastewater disposal procedures
overboard discharge of untreated sewage within US waters and territorial seas is PROHIBITED
At sea
diverted or discharged overboard
in port
discharged into a sanitary sewer through sewer risers or Ship Waste Off Load Barges (SWOB)
In restricted waters
collected and stored in holding tanks
gray water is discharged overboard
