Polluted Water Diving
Questions
Multiple Choice, 10 points
1. Which of these types of biological contaminants is NOT a single-celled organism?
( )Bacteria
( )Viruses
( )Protozoans
( )None of the above
Multiple Choice, 10 points
2. Which of these chemicals is included in a list of those too dangerous to work around for divers?
( )Cresol
( )Xylene
( )Chlordane
( )Methyl chloride
( )All of the above
True/False, 10 points
3. When preformed by properly trained personnel contaminated-water diving is 100 percent safe.
( )True
( )False
Multiple Choice, 10 points
4. A positive pressure regulator is recommended for divers; why?
( )Full-face masks can leak
( )Full face-masks can become loose
( )Full-face masks may break straps
( )All of the above
Multiple Choice, 10 points
5. Preparation for a contaminated water dive begins with:
( )Team training
( )Equipment selection
( )Dive planning
( )Gear set-up
Multiple Choice, 10 points
6. When does the decontamination process begin?
( )When the diver exits the water
( )An hour after the diver exits the water
( )When the diver enters the water
( )When the diver is in the water
Multiple Choice, 10 points
7. What is the number one priority when diving in contaminated water?
( )The dive mission
( )Safety
( )None of the above
( )Personal hygiene
Multiple Choice, 10 points
8. Where does definitive decontamination of diving equipment take place?
( )At a dedicated facility
( )On the diving boat
( )Back on shore
( )At an uncontaminated site
Multiple Choice, 10 points
9. Which of these chemicals are NOT considered too hazardous for divers?
( )Acetic anhydride
( )Acrylonitrile
( )Styrene
( )Ethylbenzene
( )None of the above
Multiple Choice, 10 points
10. What does SUS stand for?
( )Suit-under-suction
( )Successful-underwater-salvage
( )Suit-under-straps
( )Suit-under-suit
True/False, 10 points
11. Diving is always an option when unacceptable exposure conditions exist.
( )True
( )False
Multiple Choice, 10 points
12. Is it possible to use a full-face masks with a fully closed-circuit rebreather?
( )Yes
( )No
True/False, 10 points
13. Divers do not have to personally test the non-return valve on any surface-supplied diving
helmet.
( )True
( )False
Multiple Choice, 10 points
14. During the gross decontamination process, will the diver be wearing his equipment?
( )Yes, but only some of it.
( )No
( )Yes
Multiple Response, 10 points
15. As a minimum, polluted-water dive training should include: (select all that apply)
[ ]Dress-in procedures
[ ]Postdive decontamination
[ ]Dive planning
[ ]Go/No-Go decision making
[ ]Hazard recognition and evaluation
[ ]Equipment selection
[ ]Diving procedures
[ ]Emergency procedures
Multiple Response, 10 points
16. Types of hazards of concern to divers working in polluted water environments include: (check
all that apply)
[ ]Toxic Chemicals
[ ]Thermal Conditions
[ ]Radiation
[ ]Biohazards
Multiple Choice, 10 points
17. The same hazardous materials that would concern a person above water are a concern to
divers underwater. The main difference in dealing with a hazardous material underwater is that,
in most cases, _____.
( )the hazardous material is suspended or
dissolved in the water around the diver.
( )the divers don't know the hazardous material
is there.
( )the diver is protected from the hazardous
material because s/he is breathing from a self
contained air supply.
( )the hazardous material is buffered by the
water and of less concern than the same
material encountered on land.
True/False, 10 points
18. The SUS system developed by NOAA and EPA is designed to deal with both thermoregulation
of the diver and suit leakage.
( )True
( )False
Multiple Response, 10 points
19. Disadvantages of full-face masks include: (select all that apply)
[ ]Ear membranes are still at risk due to water
exposure.
[ ]Full-face masks do not allow for the use of
voice communication equipment.
[ ]Using more breathing gas as compared to
other open circuit scuba equipment.
[ ]Increases in buoyancy can produce jaw
fatigue.
[ ]Full-face masks cannot be configured for
positive pressure free-flow if the mask leaks.
[ ]Being limited by supplying breathing gas only
from a surface supplied source.
Multiple Response, 10 points
20. The features of a drysuit for use in polluted water diving includes: (select all that apply)
[ ]If to be used with a diving helmet, the suit
must be equipped with a latex or vulcanized
rubber hood which is attached directly to the
suit.
[ ]The suit must have attached boots.
[ ]Dry gloves.
[ ]If to be used with a full-face mask, the suit
must be equipped with a latex or vulcanized
rubber hood which is attached directly to the
suit.
[ ]If using a diving helmet, the helmet should
mate directly to the suit.
[ ]The suit material should be smooth and
porous.
[ ]Wrist seals
[ ]The suit material should be smooth and nonporous.