6-14-2 Manage CHT and Wastewater Surveillance Program

Question 1

CHT

Answer 1

Collection, Holding and Transfer

Question 2

NAVMED P-5010-7

Answer 2

Wastewater Treatment and Disposal

Question 3

MDR Responsibilities

Answer 3

• Indoctrination of personnel concerting potential health hazards
• Provide on-site advice, when requested in the event of major sewage leaks or spills

Question 4

3 Modes of Operation for CHT

Answer 4

• Restricted Waters
• At Sea
• In Port

Type II-B Marine Sanitation Device

Question 5

Transfer Elements for CHT

Answer 5

• Sewage Pumps
• Each tank has 2 pumps discharging grey water, Ship Waste Off-Loading Barge (SWOB)

Question 6

2 Modes of SWOB

Answer 6

Ship Waste Off-Loading Barge
- Manual Mode
Deactivates at 10% of tank volume
- Automatice Mode
10%, pump stops
30%, signals pump to activate
60%, Standby pump to activate
80%, Visual and High Volume Alarm activated

Question 7

What poses the greatest danger to ships and personnel?

Answer 7

Hydrogen Sulfide (H2S)

Can become explosive if not aerated, 2,000+ gallons must be aerated

Question 8

Pump Rooms require what?

Answer 8

• Slight negative pressure
• 2 Emergency Escape Breathing Devices
  Good for 10 minutes, based on breathing

Question 9

Toxic or Explosives gases with CHT

Answer 9

Hydrogen Sulfide
- Rotten egg smell
Methane
Ammonia
CO2

Question 10

Immz required to be up to date for wastewater work

Answer 10

• Polio (IPV)
• Tetanus Diptheria

Question 11

Required PPE

Answer 11

• Coveralls
• Rubber Boots/Gloves
• Face shields
• SCBA when necessary

Question 12

FDA Approved Disinfectants

Answer 12

Germicides
- Phenolic
- Iodine

Question 13

Color of Ship’s interior color code?

Answer 13

Gold
- Valve handles
- Operating levers

Question 14

CHT designed to operate in what 3 modes?

Answer 14

• At Sea
  Sewage/grey waters diverted overboard
• In port
  SWOB
• In restricted waters
  Stored in holding tanks, grey water discharged via diverter valves