USN Dive Man Ch 7 SCUBA Flashcards
Minimum Equipment for SCUBA?
1) Open-Circuit SCUBA w/ Sub press gauge.
2) BC / Life preserver
3) Weights (if req)
4) Knife
5) Mask
6) Fins
7) Watch
8) Depth Gauge
What is the max current Knots? If exceeded, what is needed?
1 knot max
If greater than one knot, ORM analysis req, must be tended or have a witness float.
Advantages of SCUBA?
1) Rapid Deployment
2) Portability
3) Min support Req
4) Excellent horizontal and vertical mobility
5) Minimum bottom disturbances
Disadvantage’s of SCUBA?
1) Limited endurance
2) Limited physical protection
3) Influenced by current
4) Lack of voice comms (unless using through water)
What is the OSHA requirements for civilian divers in SCUBA?
1) Max 130fsw
2) LVL 1 Chamber required for dives deeper than 100fsw or when diving outside No-D limits
3) J-valve or independent gas source with separate regulator.
4) Submersible pressure gauge
5) Must remain at chamber for 1 hr after surfacing a dive that requires a lvl 1 chamber.
What is the single greatest safety practice in SCUBA?
Use of the buddy system.
How often are tenders suppose to signal the divers with a line pull to ensure they’re okay?
Every 2-3 mins
What piece of minimum equipment may be waived based on the CO’s discretion?
Octopus
What parts of minimum equipment are not required for the pool phase of SCUBA training?
1) Knife
2) Press Gauge
3) Watch
4) Depth Gauge
What is the typical marking on a SCUBA cylinder?
1) DOT material specs
2) Service working pressure
3) Serial number assigned by Manufacturer
4) Inspectors stamp
5) Month and year of initial qualification test.
6) + marking indicates air allowable 10% over service pressure.
Buoyancy compensators shall have what?
- Provide a minimum of 10 pounds of positive buoyancy at the maximum depth.
- Have jettisonable weights if integrated into the vest. n Have a power inflator.
*Have an alternate source of inflation (oral). - Have an over-pressure relief valve.
What lifelines are used in SCUBA?
Tending line
Float Line- 11” minimum, brightly colored.
Buddy Line- Provide 6-10ft of separation between divers.
What shall SCUBA charging lines be fabricated from?
SCUBA charging lines shall be fabricated using SAE 100R7 hose for 3,000 psi.
What is the required emergency equipment needed to conduce SCUBA diving op’s?
1) Means of extraction
2) Recall Device
3) Lost Diver Kit
4) First Aid kit (crash bag)
5) Portable O2
6) Emergency Comms
7) AED
8) Bag valve mask
9) Stretcher/Backboard
