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13 Cards in this Set

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Define an immediately available chamber.
A certified and ready chamber accessible within 5 minutes by available transportation.
Define a ready chamber.
A certified and ready chamber accessible within 1 hour using available transportation.
Define an emergency chamber.
The closest recompression chamber available when a ready chamber is not required. A non-certified chamber may be used if the Diving Supervisor has inspected it and assessed it to be safe to use.
Most chamber-equipped U.S. Navy units will have one of seven commonly provided chambers. What are they?
1. Double-lock, 200-psig, 425-cubic-foot steel chamber
2. Recompression Chamber Facility: RCF 6500
3. Recompression Chamber Facility: RCF 5000
4. Double-lock, 100-psig, 202-cubic-foot steel chamber (ARS 50 class and Modernized)
5. Standard Navy Double Lock Recompression Chamber System (SNDLRCS)
6. Transportable Recompression Chamber System (TRCS)
7. Fly-Away Recompression Chamber (FARCC)
All chambers should be certified to what depth?
165 fsw
True or False: When a ready chamber is required or when surface decompression dives are planned, the full TRCS system shall be included.
True
True or False: When a ready recompression chamber is not required on site, the inner lock may be used for emergency recompression treatment.
True
What are the rules for chamber ventilation while breathing air when no monitoring devices are in use?
1. When air is breathed, provide 2 cubic feet per minute (acfm) for each diver at rest and 4 cubic feet per minute (acfm) for each diver who is not at rest (i.e., a tender actively taking care of a patient).

2. If ventilation must be interrupted for any reason, the time should not exceed 5 minutes in any 30-minute period. When ventilation is resumed, twice the volume of ventilation should be used for the time of interruption and then the basic ventilation rate should be used again.
What are the rules for chamber ventilation while breathing oxygen when portable or installed oxygen and carbon dioxide monitoring systems are not available?
1. When oxygen is breathed from the built-in breathing system (BIBS), provide 12.5 acfm for a diver at rest and 25 acfm for a diver who is not at rest. When these ventilation rates are used, no additional ventilation is required for personnel breathing air. These ventilation rates apply only to the number of people breathing oxygen and are used only when no BIBS dump system is installed.

2. If ventilation must be interrupted for any reason, the time should not exceed 5 minutes in any 30-minute period. When ventilation is resumed, twice the volume of ventilation should be used for the time of interruption and then the basic ventilation rate should be used again.

3. If a BIBS dump system or a closed circuit BIBS is used for oxygen breathing, the ventilation rate for air breathing may be used.
What are the rules for ventilation if portable or installed oxygen and carbon dioxide monitoring systems are available?
Ventilation may be adjusted to maintain the oxygen level below 25 percent by volume and the carbon dioxide level below 1.5 percent surface equivalent (sev).
How often shall recompression chambers be pressure tested?
When initially installed, at 2-year intervals thereafter, and after a major overhaul or repair.
What does a diver candidate pressure test consist of?
The candidates and the tender enter the recompression chamber and are pressurized to 60 fsw on air, at a rate of 75 fpm or less as tolerated by the occupants. Stay at 60 fsw for at least 10 minutes and ascend to the surface following standard air decompression procedures.
How long must all pressure test candidates remain at the immediate chamber site for?
A minimum of 15 minutes and at the test facility for 1 hour.