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26 Cards in this Set
- Front
- Back
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Who's approval is required for a planned exceptional exposure dive. And who also has to be on-station?
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CNO
DMO |
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What are the pneumofathometer correction factor limits?
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0-100 +1
101-200 +2 201-300 +4 301-above +7 |
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What is the depth of the Last Water Stop?
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20fsw
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What is the limit or max time at 20fsw or shallower?
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There is no limit at 20fsw or less
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What and where is it located in the dive manual, the Optional Shallow Water No-D Table
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Table that breaks down the No-D schedule into one-foot increments at 30-50fsw
Appendix 2A |
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For Air/O2 stops the diver follows the T/S up to 30fsw or 20fsw if there is no 30fsw stop and then shifts to ____ and begins time once confirmed.
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100% Oxygen
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All decompression stops deeper than 30fsw use?
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Air
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What does ORCA stand for and what is it?
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Oxygen Regulator Console Assembly
delivers oxygen to divers in water the Fly-Away Mixed Gas System (FMGS) is already cable of this without using an ORCA. |
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After shifting to 100% O2 how long do you vent each diver and can you do them at the same time? What must be verified after shifting?
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20sec.
Yes 100% O2 is being transfered via O2 analyzer |
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How long can the divers breathe 100% O2 for at one time? How long is the break in between? Do you need to vent during the air break
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30min
5 min air break (dead time) No vent required |
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What if the final O2 stop time is 35min do you need to do the air break and take the divers off 100% O2?
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No, the divers can come to the surface after the stop time is complete only if the FINAL stop is 35min or less
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While divers are ascending at what depth does the Surface Interval start and stop. On a Sur-D dive?
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40fsw to 50ft in the chamber
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What is the approximate or optimal undress time?
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03::30
3minutes 30seconds |
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Is an inside tender required if 2 divers dove and are doing a Sur-D dive? (unharmed)
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No, the Dive Sup may elect to only have the 2 divers go in the chamber and watch each other.
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What is the compression rate while traveling to 50fsw in the chamber?
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100fsw/min
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What is the ascent rate from the bottom to 40fsw? and then from 40fsw to the surface?
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30fsw/min to 40fsw
40fsw/min to surface |
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What is the max Surface Interval from 40fsw to 50fsw in the chamber without incurring a penalty?
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5 min
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How long is a half O2 period and how long is a full O2 period?
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15min
30min |
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After a dive if no repet group designator is shown how long must you wait before diving again?
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18 hours
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Can the dive sup decide to shift from in-water decompression to Sur-D anytime?
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Yes, at 30fsw or 20fsw
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While at 30 or 20fsw the divers where already on O2 could that time be subtracted from the amount of O2 time required in the chamber?
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Yes, multiply the remaining O2 times by 1.1 then divide that by 30 and round up to the next highest half period.
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What is the minimum requirement in the chamber?
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50fsw for 15min.
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Air to O2 trading ratio is?
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Air stop requirement / O2 stop requirement = X
X / by remaining air time = Y (Y x 1.1) / SurD O2 period = Z (This card is hard to answer shortly) Basically divide Air time and O2 time to get air/O2 ratio. |
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What is the best coarse of action for dives that require less than :15min of decompression?
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In-water decompression
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If the total air/O2 decompression time in the water is greater than ____ , SurD O2 is required unless _____ authorizes planned exceptional exposure dives are conducted.
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90 min
CNO |
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When you add your Residual Nitrogen Time (RNT) to the bottom time of your repet dive you obtain what?
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Equivalent Single Dive Time
(ESDT) |
