21-40
U.S. Navy Diving Manual—Volume 5
Treatment Table 5
1.
Descent rate - 20 ft/min.
2.
Ascent rate - Not to exceed 1 ft/min. Do not compensate
for slower ascent rates. Compensate for faster rates by
halting the ascent.
3.
Time on oxygen begins on arrival at 60 feet.
4.
If oxygen breathing must be interrupted because of CNS
Oxygen Toxicity, allow 15 minutes after the reaction has
entirely subsided and resume schedule at point of
interruption (see paragraph 21-5.5.6.1.1)
5.
Treatment Table may be extended two oxygen-breathing
periods at the 30-foot stop. No air break required between
oxygen-breathing periods or prior to ascent.
6.
Tender breathes 100 percent O2 during ascent from the
30-foot stop to the surface. If the tender had a previous
hyperbaric exposure in the previous 12 hours, an
additional 20 minutes of oxygen breathing is required prior
to ascent.
Figure 21-7. Treatment Table 5.
Treatment Table 5 Depth/Time Profile
Time at Depth (minutes)
Total Elapsed Time:
135 Minutes
2 Hours 15 Minutes
(Not Including Descent Time)
60
3
20
20
30
30
20
5
5
5
45
30
15
0
Depth
(FSW)
Ascent Rate
1 Ft/Min.
Ascent Rate
1 Ft/Min.
Descent Rate
20 Ft/Min.
