IDC Dive Theory & Safety Standards 2

Question 1

What is the maximum recreational scuba diving depth limit according to PADI standards?

Accepted Answer

40 meters / 130 feet

Answer

PADI sets the recreational scuba diving depth limit at 40 meters (130 feet). Dives beyond this depth require technical diving training and equipment.

Question 2

Does PADI's Recreational Dive Planner (RDP) specify a minimum surface interval between dives?

Accepted Answer

No minimum surface interval is specified by the RDP

Answer

The RDP does not specify a minimum surface interval. Divers must complete the required surface interval to reduce their pressure group before the next dive.

Question 3

What does the term 'pressure group' refer to in recreational dive planning?

Accepted Answer

A letter designation indicating residual nitrogen in the body

Answer

A pressure group is a letter designation (A through Z) used with the RDP to track residual nitrogen levels in a diver's body between repetitive dives.

Question 4

Which factor does NOT directly affect a diver's nitrogen absorption rate?

Accepted Answer

Water temperature at the surface

Answer

Surface water temperature does not directly affect nitrogen absorption. The primary factors are depth (partial pressure of nitrogen) and time at depth.

Question 5

What is oxygen toxicity and at what partial pressure of oxygen does it become a concern for recreational divers?

Accepted Answer

Excess oxygen causing convulsions; above 1.4 bar PO2

Answer

Oxygen toxicity occurs when the partial pressure of oxygen (PO2) exceeds safe limits, potentially causing convulsions. Recreational diving limits PO2 to 1.4 bar maximum.

IDC - Certified Instructor Development Course Trainer Practice Test

IDC - Certified Instructor Development Course Trainer Practice Test

IDC Dive Theory & Safety Standards 2