Numbers Flashcards
1
Q
What is the standard aluminum cylinder?
A
80
2
Q
Where is your safety stop and for how long?
A
3 to 5 minutes at 15 ft
3
Q
What is the maximum ascent rate not to be exceeded?
A
30 ft/ min
4
Q
Where is the greatest relative pressure change?
A
0-10m or 0-33 ft
5
Q
What reserve psi should you plan for?
A
500 psi remaining
6
Q
What is the depth to atmosphere (ata) ratio?
A
0 ft = 1 ata
33 ft = 2 ata
66 ft = 3 ata
99 ft = 4 ata
132 ft = 5 ata
etc
7
Q
How long do you have to wait after diving to fly?
A
24 hours.
8
Q
What elevation can you ascend to after diving?
A
8000 ft
9
Q
What percent of air is nitrogen and oxygen?
A
Nitrogen: 79%
Oxygen: 21%
