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GFE > GFE > Flashcards

GFE Flashcards

1
Q

Define Gas

A

A material whose boiling point is below room temperature at atmospheric pressure

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2
Q

Define Toxic Gas

A

A gas which is poisonous to the human body

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3
Q

Define Asphyxiant

A

As opposed to a toxic gas, an asphyxiant affects the absorption of oxygen by hemoglobin in the blood stream, thereby causing oxygen starvation

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4
Q

Define vapor

A

The gaseous phase of a substance which ordinarily exists as a solid or liquid at standard temperature and pressure

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5
Q

Define Dust

A

Solid particles (1 to 100 microns) formed as a result of disintegration of materials

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6
Q

Define Dalton’s Law

A

Each gas in a mixture of gases makes its own contribution to the total pressure of the mixture (Pt = pp1 + pp2 + ppn)

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7
Q

Conversion for volume % & ppm to partial pressure

A

Torr = Total pressure/100 x volume%

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8
Q

Purpose of atmosphere control system

A

maintain the air in the submerged submarine as close as practicable to the composition of clean air found in the earth’s atmospher

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9
Q

How do we achieve the purpose of atmosphere control system

A
  1. Proper atmosphere monitoring procedures
  2. Proper equipment operating procedures
  3. Control of materials introduced into the submarine
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10
Q

What are the Instrumental Methods of Analysis

A
  1. Infrared Spectrophotometry
  2. Mass Spectrometry
  3. Colorimetric Detection (Draeger Tubes)
  4. Photoionization
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11
Q

What is Infrared Spectrophotometry?

A

The identification of a gas by examining light absorption in the infrared region.

-The primary mean of quantifying carbon monoxide

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12
Q

What is mass spectrometry?

A

The identification of gaseous mixtures by separating ionized particles to their mass to charge ratio

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13
Q

What is colorimetric Detection?

A

Identification of a gas by a selected chemical reaction which produces a color change

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14
Q

What is Photoionization

A

Identification of gas by molecular ionization produced by absorption of ultraviolet light

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15
Q

List 4 atmosphere monitoring equipment

A
  1. CAMS (Central Atmosphere Monitoring System)
  2. Trace Gas Analyzer (TAG)
  3. Portable Oxygen Analyzer (PhD6)
  4. Colorimetric Detector Tubes (Draegers)
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16
Q

What characteristics differ submarine atmosphere from that in nature

A
  1. A greater variability in oxygen and carbon dioxide content
  2. The presence of a wide range of organic and inorganic contaminants including gases, vapors, and aerosols
  3. The potential problems associated with the inherent toxicity of certain substances
17
Q

What is the composition of clean dry air?

A
  1. Nitrogen
  2. Oxygen
  3. Argon
  4. Carbon Dioxide
18
Q

What is the primary atmosphere monitoring system

A

CAMS (Central Atmosphere Monitoring System)

19
Q

How often is CAMS checked underway? in port?

A

Underway: hourly
Port: daily

20
Q

How many spaces does CAMS check?

A

3 spaces (one must be the fan room)

21
Q

Is the reactor room monitored routinely?

A

No

22
Q

Effects of Oxygen depletion at 17% “D.C.”

A

6 Hour: Impaired night vision

23
Q

Effects of Oxygen depletion at 15.3% “HooDLuM”

A

3 Days: Headache (rare), fatigue on exertion

24
Q

Effects of Oxygen depletion at 13.2% “oTToMaN”

A

6 Hrs: above + difficulty with tasks requiring mental alertness, impaired judgement after several hours
3 Days: above+ irritability

25
Q

Effects of Oxygen depletion at 11.8% “DeToxiFy”

A

6 Hrs: above + heavy breathing, dizziness euphoria
3 Days: above+ heavy breathing, dizziness, nausea/vomiting, insomnia, pulmonary edema, encephalopathy

26
Q

Percentages of Low oxygen effects?

A

7 percentage Levels:
21% “Nadia”
17% “D.C”
15.3% “hooDLuM”
13.2% “oTToMaN”
11.8% “DeToxiFy”
9.6% Beach
8.8% ViVa

27
Q

Effects of Oxygen depletion at 9.6% “BeaCH”

A

6 Hrs:
1. above+ useful consciousness is 15-20 min
2. Poor judgement
3. Slow Thinking
4. Muscular Incoordination

28
Q

Effects of Oxygen depletion at 8.8% “ViVa”

A

6 Hrs:
1. above+ useful cosciousness < 5 min in active persons
2. Convulsions
3. Death

29
Q

What factors affect the extent of tissue damage from toxic contaminants?

A
  1. Length of exposure
  2. Concentration
  3. Chemical considerations (e.g. solubility in body fluids and tissue proliferation)
  4. Type of gas or toxic medium
30
Q

How are the ships atmospheres documented inport and underway?

A

Inport: on the Below Decks lego sheet. Reviewed by the Duty Officer
Underway: on the LAN Tech of the Watch (LTOW), formerly known as the Auxiliary Electrician Foreward (AEF)
-Reviewed by COOW, DOOW and OOD
-Out of Spec (OOS) items are immediately identified and addressed

GFE (3 decks)

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