PADI Recreational Dive Planner (RDP) 4

Question 1

A diver surfaces from a first dive as pressure group 'P'. According to the RDP, what does this suggest?

Accepted Answer

The diver is at or very near the no-decompression limit and carries a high level of residual nitrogen

Answer

Pressure group P is close to the maximum letter on the RDP, indicating a high level of residual nitrogen near the NDL.

Question 2

What is the recommended ascent rate according to PADI when using the RDP?

Accepted Answer

30 feet (9 m) per minute or slower

Answer

PADI recommends ascending at 30 feet (9 meters) per minute or slower to allow safe nitrogen elimination.

Question 3

Which of the following activities should a diver AVOID after a dive to prevent increasing DCS risk, according to PADI RDP guidelines?

Accepted Answer

Flying or traveling to altitude before sufficient off-gassing

Answer

Flying or ascending to altitude after diving reduces ambient pressure, causing residual nitrogen to expand and potentially cause DCS.

Question 4

When using the RDP eRDPml (multi-level version), what is the primary advantage over the table version?

Accepted Answer

It accounts for actual depth changes during a dive, giving credit for time spent at shallower depths

Answer

The eRDPml calculates nitrogen loading level by level, giving credit for time at shallower depths rather than assuming the entire dive at the deepest point.

Question 5

A diver surfaces as pressure group 'G' and wants to return to pressure group 'C' before the next dive. How would they find the required surface interval?

Accepted Answer

Table 2 — find row G and look across to column C to read the surface interval

Answer

Table 2 is the Surface Interval Credit Table; find your starting group on the left and scan across to your desired end group to read the required surface interval.

PADI - Professional Association of Diving Instructors Practice Test

PADI - Professional Association of Diving Instructors Practice Test

PADI Recreational Dive Planner (RDP) 4