Quiz - Recreational Dive Planner - Tissue Compartment and Half-time

[Pedro Burrito]

From the PADI Dive Theory Exam:

A ____ tissue compartment model was used to determine the no decompression limits for the Recreational Dive Planner and the surface interval credit table was calculated using a tissue half-time of ____.

I will post a daily question from my exams to help newer divers and to encourage more experienced divers to interact gracefully and helpfully with the newer divers.

Reminder - this is a post in the Basic Forum and it is a green zone. Please be nice and on topic.

Thank you for your patience while we try to give people something to discuss other than Covid-19 and/or Politics. I will post the answer covered by the spoiler tag later today.

 

[scubadada]

Good question, I would imagine this is something that most divers do not know. And, why was this tissue half life chosen for SI credit?

 

[rongoodman]

What is the first number listed in front of the compartment half-life?

 

[HKGuns]

Tricky question as the answers you provided could be correct for other stuff.

 

[Pedro Burrito]

What is the first number listed in front of the compartment half-life?

Number of compartments.

 

[Searcaigh]

RDPs did not exist when I learned to dive and I know nothing about them.

 

[broncobowsher]

Didn't learn the PADI system.

 

[scubadada]

RDPs did not exist when I learned to dive and I know nothing about them.

I also learned on the US Navy tables, but later, learned about other tables and computer algorithms. The PADI RDP was also implemented as a popular computer decompression algorithm, DSAT.

 

[tursiops]

RDPs did not exist when I learned to dive and I know nothing about them.

Still, the RDP has an interesting history, both the number of compartments chosen and the reason for the slowest tissues's half-time. See http://archive.rubicon-foundation.org/xmlui/handle/123456789/4228. The RDP can also be used for multi-level dives but it is complicated: http://dspace.rubicon-foundation.or...ndle/123456789/9332/AAUS1991_3.pdf?sequence=1.

 

[rhwestfall]

ML? I prefer the wheel

(I learned on the USN tables in the back of my book. When it came time to get tables, I bought a Wheel. Used it until I got a PDC.)