Conversion, Consumption, Usage and Limits

Question 1

1 Bar is equal to

Answer 1

750mmHg = 10 msw = 14.5 psi

Question 2

1 Atmosphere is equal to

Answer 2

760 mmHg = 33 FSW = 14.7 psi

Question 3

1 Gallon (imp) of Fresh Water weighs

Answer 3

10 lbs

Question 4

1 Gallon (imp) of Salt Water weighs

Answer 4

10.3 lbs

Question 5

1 Cubic foot of Salt Water weighs

Answer 5

64.38lbs

Question 5

1 Cubic Foot of Fresh Water weighs

Answer 5

62.5 lbs

Question 6

1 Cubic Meter of Salt Water weighs

Answer 6

1.03 Tonnes or 1030 kgs or 1.03 kgs/litre

Question 7

1 Imperial Ton in pounds

Answer 7

2240 lbs

Question 8

1 US Ton in pounds

Answer 8

2000 lbs

Question 9

1 Cubic Meter of Fresh Water weighs

Answer 9

1.00 Tonnes or 1000 kgs or 1kg/ litre

Question 10

28.32 Litres Equivalent in Imperial volume

Answer 10

1 Cubic Foot

Question 11

1000 litres is what in volume?

Answer 11

1 Cubic Meter

Question 12

35.32 Cubic Feet Equivalent in Metric

Answer 12

1 Cubic Meter

Question 13

FSW to MSW

Answer 13

FSW/ 3.281 = MSW

Question 14

What is the pressure Equivalent of 1 FSW

Answer 14

0.445 psi

Question 15

MSW to FSW

Answer 15

MSW X 3.281 = FSW

Question 16

1 m Equivalent in imperial inches, feet and yard

Answer 16

39.4 inches or 3.28 feet or 1.09 yards

Question 17

1 cm in inches

Answer 17

0.394 inches

Question 18

Chamber parameters
Oxygen (O2)

Answer 18

0.35 -0.5 Bar PPO2

Question 19

Chamber Parameters
Temperature °C

Answer 19

24°C - 32°C ( as per comfort)

Question 20

Chamber Parameters
Carbon Dioxide (CO2)

Answer 20

MAX 5mb or 0.005bar or 5000ppm or 0.5%

Question 21

Chamber Parameters
Time Keeping

Answer 21

To the Exact Minute

Question 22

Chamber Parameters
Depth Accuracy

Answer 22

Plus - Minus 0.5 m

Question 23

Air/Gas Consumption
Emergency ( Bailout, OBG)

Answer 23

40 L/minute
1.5 Ft3/minute

Question 24

Air/ Gas Consumption Normal

Answer 24

35 L/minute 1.25 Ft3/minute

Question 25

Reclaim Gas Usage

Answer 25

5 L/minute 0.18 Ft3/ minute

Question 25

Extra Norway: Air/Gas Consumption Emergency

Answer 25

62.5L/minute

Question 26

Metabolic O2 Consumption (Irrelevant of Depth)

Answer 26

: 0.5 L/minute or 30 L/hour or 0.72 m3/ Diver/ Day : 0.018Ft3/minute or 25Ft3/Day/ Diver

Question 27

Chamber BIBS Consumption

Answer 27

20 L/minute 0.7 Ft3/minute

Question 28

IMCA PPO2 Limits Therapeutic Treatment

Answer 28

1.6 -2.8 bar

Question 29

IMCA PPO2 Limits (Maximum in Air or Nitrox Diving)

Answer 29

1.4 bar

Question 30

IMCA PPO2 LIMITS (Saturation in Water)

Answer 30

0.6 - 0.9 bar

Question 31

IMCA PPCO2 LIMITS (Bell Max CO2)

Answer 31

20mb or 0.02 bar PP or 2% or 20 000 PPM

Question 32

IMCA PPO2 LIMITS (Saturation in Chamber)

Answer 32

0.35 - 0.5 bar

Question 33

IMCA PPCO2 LIMITS (Chamber Max CO2)

Answer 33

5mb or 0.005bar PP or 0.5% PSE or 5000 PPM

Question 34

SODA LIME USE 1 kg will last one dive…..

Answer 34

4 Hours

Question 35

SODA LIME USE 1 kg will absorb how many liters of CO2?

Answer 35

120 litres

Question 36

SODA LIME USE 6 Kgs will last 1 Diver……..

Answer 36

24 Hours

Question 37

Air Purity Limits Carbon Dioxide (CO2)

Answer 37

500PPM

Question 38

Air Purity Limits (Oil)

Answer 38

0.5mg/m3

Question 39

Air Purity Limits Water (H2O)

Answer 39

25mg/m3

Question 40

Air Purity Limit Carbon Monoxide(CO)

Answer 40

5PPM

Question 41

Hypercapnia Surface Limits (CO2 Poisoning) Onset

Answer 41

20 000ppm or 2%SEP or 0.02 bar abs or 20mb

Question 42

Breathing Oxygen Purity Limit O2

Answer 42

99.5% by Volume

Question 43

Hypercapnia Surface Limits (CO2 Poisoning) Unconscious

Answer 43

150 000ppm or 15%SEP or 0.15 bar abs or 150mb

Question 44

CO2 Limits in a DDC should not exceed

Answer 44

5000 PPMin DDC (0.5% SEP) or 0.005 ppO2 bar abs or 5mb