IDC Dive Theory & Safety Standards 3

Question 1

What is the primary purpose of the pre-dive safety check (BWRAF) in PADI training?

Accepted Answer

To verify equipment is functioning and both divers are ready

Answer

BWRAF (BCD, Weights, Releases, Air, Final check) is a systematic pre-dive safety check to ensure both divers' equipment is functioning properly and they are prepared for the dive.

Question 2

What is the current PADI recommended maximum ascent rate for recreational scuba diving?

Accepted Answer

18 meters per minute

Answer

PADI recommends a maximum ascent rate of 18 meters (60 feet) per minute, though many current guidelines suggest slowing to 9 meters (30 feet) per minute from the safety stop to the surface.

Question 3

At what depth and for how long does PADI recommend performing a safety stop?

Accepted Answer

5 meters for 3 minutes

Answer

PADI recommends a safety stop at 5 meters (15 feet) for 3 minutes at the end of every dive as a precautionary measure.

Question 4

What condition caused by compressed air at depth may impair a diver's judgment?

Accepted Answer

Nitrogen narcosis

Answer

Nitrogen narcosis is an altered state of consciousness caused by elevated partial pressures of nitrogen at depth, often described as an 'underwater intoxication.'

Question 5

What is a 'square profile' dive and why does it consume the NDL faster than a multilevel dive?

Accepted Answer

A dive where the diver stays at maximum depth the entire time, spending more time at maximum nitrogen absorption

Answer

A square profile means spending the entire dive at maximum depth, which consumes the no-decompression limit faster than a multilevel profile that spends most time at shallower depths.

IDC - Certified Instructor Development Course Trainer Practice Test

IDC - Certified Instructor Development Course Trainer Practice Test

IDC Dive Theory & Safety Standards 3