What are the MDR’s responsibilities as it pertains to Wastewater management?
- Conducting visual inspection of the MSD components during habitability and sanitation inspection.
- Provide on-site advice, when requested in the event of major sewage leaks or spills.
What are the modes of the CHT system?
- Restricted waters (transit)
- At sea
- In port
How many modes does the CHT operate in?
3
What does CHT stand for?
Collection, Holding, and Transfer.
Describe the holding element of the CHT system
- Tanks that retain sewage during transit of restricted water for eventual disposal.
What poses the greatest danger to ships and personnel as it pertains to waste water?
Hydrogen Sulfide (H2S)
What assumption should always be made about sewage holding tanks?
They contain toxics gasses, unless cleared by gas-free engineering measures.
Pump rooms should have what?
- Slight negative pressure (exhaust ventilation within 9 inches of deck)
- Ventilation indicator light mounted outside pump room
- 2 Emergency Escape breathing devices
- Proper warning plates outside and near tank access.
How many emergency escape breathing devices should pump rooms have?
2
You notice a rotten egg smell while doing your inspection, what is this a indicator of?
Hydrogen Sulfide (H2S)
Hydrogen sulfide is marked by what aroma?
Rotten egg smell
What are the required vaccines for a waste worker?
- Polio
- Tetanus
- Diphtheria
What shall not be done while in direct contact with the source of contamination?
No hand to mouth contact including eating, drinking, or smoking.
Where are safety procedures located in?
NAVSHIPS TECHNICAL MANUAL CHAPTER 593 “ POLLUTION CONTROL” (NSTM-593)
What chapter of the NSTM contains the safety procedures for spill cleanups?
Chapter 593
What is the most common type of EPA disinfectant aboard naval ships?
Iodine Type
What is color is the coding label?
Gold
What distance from the shore is wastewater disposal prohibited?
Within 3 nautical miles.
What distance is the exhaust ventilation from the deck inside the pump room?
9 inches.
