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Navy Diver > chamber operations > Flashcards

chamber operations Flashcards

1
Q

What are the 4 notes for the Navy chamber support levels?

A

NOTE 1: Based on space constraints at the site, the Commanding Officer may authorize extension of the surface interval to a maximum of 7 minutes

NOTE 2: A non-Navy chamber may be used if authorized in writing by the first Flag Officer (FO) in the chain of command, and must include a NAVSEA 00C hazard analysis.

NOTE 3: A non-Navy chamber may be used if it is evaluated utilizing the NAVSEA non-Navy recompression chamber check sheet, and authorized in writing by the Commanding Officer.

NOTE 4: During extreme circumstances when a chamber cannot be reached within 6 hours the Commanding Officer can give authorization to use the nearest approved recompression facility.

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2
Q

What are the 3 Navy recompression chamber support levels?

A

LEVEL 1: A U.S. Navy certified recompression chamber close enough to the dive-site to support surface decompression with a surface interval of 5 minutes. (NOTE 1,2)

LEVEL 2: A U.S. Navy certified recompression chamber accessible within one hour of the casualty (NOTE 2)

LEVEL 3: A U.S. Navy certified recompression chamber accessible within six
hours of the casualty (NOTE 3,4)

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3
Q

An EEHS has a single lock and allows a patient to be administered oxygen at what depth while in transport to a recompression chamber?

A

60 fsw

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4
Q

Why is the EEHS not considered a recompression chamber?

A

Does not provide hands-on access to the patient

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5
Q

Collectively a recompression chamber system must be able to impose and maintain a pressure equivalent to what depth on the diver?

A

165 fsw (6 atmospheres absolute)

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6
Q

How many chamber occupants can you treat with a RCF series 6500 and 5000?

A

RCF Series 6500: 12 occupants

RCF Series 5000: 7 occupants

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7
Q

What diameter is the SNDL double lock recompression chamber?

A

54” Diameter

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8
Q

The SNDLRCS can comfortably accommodate how many divers?

A

4 divers in the inner lock and 3 divers in the outer lock

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9
Q

What are the 3 TRCS Mods?

A

Mod 0: TRC and TL
Mod 1: TRC only
Mod 2: TRC and TL with 5,000 psi upgrade

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10
Q

A TRCS Mod 0 or Mod 2 without a TL CO2 Scrubber is limited to how many occupants?

A

One patient and one tender

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11
Q

What TRCS Mods can be used when a Level I Recompression Chamber is required or Surface Decompression dives are planned?

A

Mod 0 or Mod 2 (with TL CO2 Scrubber installed)

When a Level I Recompression Chamber is not required, any of the three TRCS Mods can be used.

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12
Q

The Fly Away Recompression Chamber (FARCC) system consists of how many inch double lock modernized chamber?

A

60-inch

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13
Q

Recompression chamber system, at a minimum, must be capable of conducting what treatment table?

A

Treatment Table 6A

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14
Q

What sufficient amount of air should the primary and secondary air supply of recompression chamber have?

A

Primary: pressurize the inner lock once (1) to 165 and the outer lock twice (2) to 165 and ventilate the chamber

Secondary: inner and outer lock once to 165 and ventilate the chamber

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15
Q

Describe a Category “A” chamber.

A

No BIBS overboard dump
No CO2 scrubber
No air BIBS
No O2 and CO2 monitor

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16
Q

Describe a Category “B” chamber.

A

BIBS overboard dump
No CO2 scrubber
No air BIBS
O2 and CO2 monitors

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17
Q

Describe a Category “C” chamber.

A

BIBS overboard dump
CO2 scrubber
No air BIBS
O2 and CO2 monitors

18
Q

Describe a Category “D” chamber.

A

BIBS overboard dump
CO2 scrubber
Air BIBS
O2 and CO2 monitor

19
Q

Describe a Category “E” chamber.

A 
BIBS overboard dump
CO2 scrubber
O2 and CO2 monitor
Spare CO2 scrubber
Secondary power supply
NITROX BIBS
No Air BIBS
20
Q

Do chambers that do not have latches (dogs) on the doors required to have a relief valve on the outer-lock?

A

No

21
Q

Where is emergency lighting required on a recompression chamber?

A

External control station
Outer lock
Inner lock

22
Q

Do not allow oxygen supply tanks to be depleted below what psig?

A

100 psig

23
Q

What position is the chamber gag valve lock-wired in?

A

Open position at all times (only closed in the event of relief valve failure)
Close only if relief valve fails

24
Q

What size are all chamber placards?

A

4 to 6 inch placard viewable by operating personnel

25
Q

What is the ventilation rate for chamber with and with-out bibs?

A

With: 2 acfm for each diver at rest and 4 acfm for each diver not at rest

With-out: 12.5 acfm for a diver at rest and 25 acfm for a diver not at rest

26
Q

If ventilation of a chamber is interrupted it should not exceed what amount of time?

A

Time should not exceed 5 minutes in any 30 minute period

When resumed twice the volume of ventilation should be used for the interruption

27
Q

What is the most efficient method of ventilation in terms of the amount of air required?

A

Continuous ventilation

28
Q

Does the size of the chamber influence the rate (acfm) of air required for ventilation?

A

No

29
Q

When are pressure tests required on recompression chambers?

A

When initially installed
2 year interval
After major over-haul or repair

30
Q

When shall chambers receive routine maintenance with the post-dive check list?

A

After each use

Once a month

31
Q

How often is a chamber inspected inside and out?

A

Annually

32
Q

What types of chamber s are required to be painted?

A

Steel Chambers (stainless steel chambers are not required to be painted)

33
Q

How much faster does a fire spread in a chamber than at atmospheric pressure because of the higher ppO2?

A

2 to 6 times faster

34
Q

What precautions are taken to minimize fire hazards in the chamber?

A

Durett or Submarine mattress (enclosed in flame proof covers)
100 % cotton sheets and pillow cases
Clothing is 100% cotton or for chambers (Diver swim trunks made of 65% polyester 35% cotton material are acceptable)
Use lubricants approved in NSTM chapter 262

35
Q

Divers candidates must be physically qualified in accordance with what?

A

Manual of the medical Department,

Art. 15-102

36
Q

What are the requirements for a diver candidate pressure test?

A

Equalize both ears to a depth of 60 fsw

Passed the screening physical readiness test in accordance with MILPERSMAN 1220-100

37
Q

What are the post observation periods for a pressure test candidate?

A

Immediate chamber site: 15 minutes

Test facility: 1 Hour

38
Q

How many categories of chambers are there?

A

5

A thru E

39
Q

What are recompression chambers pressurized to during a pressure test?

A

100 fsw (45 psig)

225 fsw (100 psig) for 5 minutes

Depressurize to 165 fsw: hold for 1 hour. Not allowed to drop below 145 psig (65 psig)

40
Q

What size hole should be drilled in hearing protection used for recompression chamber operations?

A

1/16 inch hole

41
Q

What is the floodable volume for the RCF 6500, RCF 500, ARS 50 Class, TRC and TL?

A

RCF 6500: 440 cuft (IL), 144 cuft (OL)

RCF 5000: 162 cuft (IL), 61 cuft (OL)

ARC 50 Class: 134 cuft (IL), 68 cuft (OL)

TRC: 45 cuft

TL: 45.5 cuft

Navy Diver (11 decks)

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