CHT

Question 1

how often must medical conduct inspections of marine sanitation devices

Answer 1

quarterly

Question 2

medical must prove what in the event of major sewage leaks or spills

Answer 2

on site advice

Question 3

what are the modes of CHT systems

Answer 3

restricted waters, at sea, in port

Question 4

cht tanks are normally sized for how much waste

Answer 4

12 hours

Question 5

what are the two mods for offloading sewage

Answer 5

manual mode and automatic mode

Question 6

manual mode deactivates the pumps automatically when the tank is at what level

Answer 6

10%

Question 7

what are the different capacities for automatic mode

Answer 7

10%: low level stops pumps
30%: signals the duty pump to activate
60%: signals the standby pump to activate
80%: visual and audible high level alarm activated

Question 8

what has is generated by CHT

Answer 8

Hydrogen sulfide (H2S)

Question 9

untreated sewage when held in tanks larger than 2000 gallons must be what

Answer 9

aerated

Question 10

what toxic gases are associated with CHT

Answer 10

hydrogen sulfide
methane
ammonia
carbon dioxide

Question 11

personnel in contact with wastewater must have what immunizations

Answer 11

polio (IPV), and tetanus diptheria (Td)