Manage CHT and Wastewater Surveillance Program Flashcards
who conducts visual inspections of marine sanitation devices (MSD) components?
Medical Department
Medical department responsibilities for CHT
- quarterly inspections
- indoc training for CHT health hazards
- Provide onsite advice when requested
- be present during clean-ups in food, living and medical spaces
- periodic training
what modes can CHT operate in?
- Restricted areas
- At Sea
- In Port
what are the functional elements of the CHT System?
- Collection element
- Hold element
- Transfer element
Collection element of CHT functions:
- Soil drains
- gray water drains
- diverter valves direct the waster water over the side or to holding tanks
CHT Holding element functions:
- tanks retain sewage during transit of restricted water for eventual disposal
- tanks are sized for 12 hour holding period
CHT Transfer Element Function:
- sewage pumps
- Overboard and deck connection discharge piping
- diverter and check valves
- each ship has 2 sewage pumps which are connected in parallel to discharge sewage to a receiving facility
what are the two modes that a CHT system can function at?
- Automatic mode
- Manual mode
what size of untreated sewage tank requires being aerated?
2,000 gallons
How long are EEBDs good for?
10 minutes based on individuals breathing
who must all MSD sewage spills/leaks be reported to?
- Engineering officer
- XO
- SMDR
what other gasses are associated with CHT?
- Hydrogen sulfide
- Methane
- Ammonia
- Carbon Dioxide
what imms must CHT workers have?
- Polio
- Tetanus Diphtheria
what spaces must be cleaned with an EPA approved Germicide?
- Medical
- Food
- Berthing spaces
what are the two types of Germicides?
- Phenolic
- Iodine
