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Air Diving Supervisors QUESTIONS > Mix of All subjects > Flashcards

Mix of All subjects Flashcards

1
Q

What type of work can a diver do from a wet bell, mid water if the current is between 1.2 knots and 1.5 knots?

a Current is to strong to dive
b Light work
c Observation only
d Normal work

A

c

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2
Q

When is two-way voice communications with the diver needed?

a only if the client requests it
b When there are less than 2 divers in the water
c At all times
d During SURD 02 dives only

A

b

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3
Q

How many standby divers are required for 4 divers in the water?

a Three (3)
b One (1)
c Two (2)
d Four (4)
A

c

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4
Q

What can be considered an emergency communication in the event of a loss of comms with the diver? (Tick the correct answers)

a Hand signals to the hat camera
b Line signals
c Rapidly pulling the diver to surface

A

ab

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5
Q

What type of environmental conditions should the diving
supervisor consider when planning diving operations? (Tick the correct answers)

a Wind speed
b Current
c Swell

A

abc

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6
Q

Which of the following is not a duty and responsibility of the diving supervisor

a. ensure that all possible foreseeable hazards have been evaluated and are fully understood by all relevant parties
b. check that the equipment used for any particular operation is adequate, safe, properly certified and maintained
c. read and understand all relevant project specific procedures
d. Ensure the client has enough refreshments when he is in dive control

A

d

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7
Q

When can a trainee supervisor supervise a dive?

a. During night hours when the client is asleep
b. When the supervisor is on deck inspecting the rigging
c. At meal breaks when the supervisor is away having lunch
d. Only in the presence of an appointed supervisor

A

d

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8
Q

Who is the only person who can order the start of a dive?

a. The diving supervisor
b. The vessel master
c. The diving superintendent
d. All of the above

A

a

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9
Q

What are the duties and responsibilities of the diving
superintendent? (Tick all the correct answers)

a. ensuring the personnel are competent and qualified
b. ensuring the activities are carried out in accordance with the requirements in the diving project plan
c. ensuring that the permit to work system is followed
d. ensuring accommodation and catering is up to a required standard

A

abc

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10
Q

According to AODC047, when using a wet bell on the bottom, what is the restriction on working in currents?

  1. 2 knots
  2. 0 knots and beyond
  3. 8 knots
  4. 8 knots
A

1.2 knots

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11
Q

On a Beaufort Scale force what would a Gale be?

Force 4
Force 8
Force 10
Force 6

A

Force 8

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12
Q

Who makes the final decision to continue diving in marginal weather conditions?

The diving supervisor
The OCM
The diving superintendent
The Client

A

The diving supervisor

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13
Q

During diving operations, a diver comes to you expressing his concern with the deteriorating weather conditions. What would you do?

a. Assess the deteriorating conditions, contact the bridge for a weather update, have a toolbox talk with the team and discuss the issue and decide on a safe way forward
b. Ignore his concern
c. Say thank you, then explain to him that the weather has got nothing to do with him
d. Report him to the superintendent and have him replaced

A

a

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14
Q

What is the minimum number of communications systems required in dive control to the bridge and other control areas?

None, providing dive permit is signed

1, only a radio is required

1 . only clear comma is required

2,Dedicated primary and secondary back-up

A

2, Dedicated primary and secondary back-up

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15
Q

What are the duties and responsibilities of a diver (tick the correct answers)

a. Servicing of diving hats
b. inform the diving supervisor if there is any medical or other reason why they cannot dive
c. Ensure that they fully understand the dive plan and deem themselves competent to carry out the planned task

A

b c

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16
Q

A bail-out bottle has a floodable volume of 8 ltr. How much time has a diver got if his surface supply fails at 35 msw? The bail-out bottle is at a pressure of 190 bar.

a. 8 minutes 54 seconds
b. 8 minutes 21 seconds
c. 7 minutes 48 seconds
d. 7 minutes 07 seconds

A

c

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17
Q

What is vitally important at shift change? (More than I correct answer)

a. Oncoming team is adequately briefed
b. All hazards are explained to oncoming team
c. Detailed explanation of progress made and preparations started

A

ABC

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18
Q

if there is a light breeze with small wavelets (0.2m) and crests have a glassy appearance, what is the Beaufort Scale force?

a. Force 5
b. Force I
c. Force 2
d. Force 3

A

c

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19
Q

Rain and fog will cause a reduction in surface visibility, possibly creating a hazard for the support vessel/floating structure and diving operations.
Poor, visibility conditions can be considered as?

a. Visibility less than 100m
b. Visibility between 500m. and 1000m
c. Visibility between 2 n.miles and 5 n.miles
d. Visibility between 1000m. and 2 n.miles

A

d

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20
Q

What is the longest period of work a diving team member may be asked to work in and exceptional circumstance?

a. 8 hours
b. 12 hours
c. 16 hours
d. 14 hours

A

c

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21
Q

When is the Client allowed to apply pressure to the diving supervisor?

a. When he feels the divers are not working fast enough
b. At no time. If he does then it should be reported to the diving superintendent
c. When the project is running behind schedule
d. During the supervisors meal breaks only

A

b

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22
Q

Who is the only person who can appoint a supervisor?

a. The opposite shift supervisor
b. The client
c. The dive team
d. The diving contractor

A

d

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23
Q

According to AODC047 and IMCA D022, when completing light work on the bottom using surface supply, what is the restriction on working in currents?

a. 1.5 knots
b. 1.2 knots
c. 0.8 knots
d. 1.0 knots

A

c

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24
Q

Does a supervisor need to be appointed in writing?

a. only if he acts as a supervisor for longer than 14 days
b. Verbal appointment is okay
c. Yes
d. No

A

c

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25
Q

How would you describe a veering wind?

a. The changing of the wind in an anti-clockwise direction
b. Sudden decrease in wind speed
c. Sudden increase in wind speed
d. The changing of the wind in a clockwise direction

A

d

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26
Q

The bridge calls you in dive control and advises you that there is an imminent low pressure system approaching, what would your actions be?

a. Ignore the warning and continue with heavy lift operations
b. Continue diving but closely monitor the weather and seek regular updates from the bridge
c. Abort dive and recover the diver
d. Recover the diver and muster at life boat stations

A

b

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27
Q

When can the diving supervisor allow contractual pressure to compromise the safety of the dive team?

a. Never
b. If only 2 or less people may get injured
c. only if the client is pressurizing him
d. When he is threatened with dismissal

A

a

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28
Q

Where would the emergency communication procedures be located?

a. In the mess room
b. in the company manual
c. No need for emergency communication procedures as there are 2 divers in the water
d. On your laptop from a previous job

A

b

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29
Q

What is the minimum team size for air diving operations to be carried out?

a. nine (9)
b. six (6)
c. seven (7)
d. five (5)

A

d

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30
Q

Which of the following is a means of communication?

a. Radio
b. Wired systems
c. CCTV
d. All of the above

A

d

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31
Q

A 3 mm neoprene wetsuit hood provides some hearing protection from sound frequencies between …….. and ………. Hz at shallow depths less
than 10msw?

a. 900 and 1000 Hz
b. 400 and 500 Hz
c. 500 and 600 Hz
d. 600 and 700 Hz

A

b

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32
Q

To whom may the diving supervisor pass total control of the communications to?

a. To the training diving supervisor
b. To a properly appointed qualified diving supervisor
c. To a 3.4U inspection coordinator
d. To the lead diver during an emergency

A

b

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33
Q

Who may order a stop to diving activities? (tick all the correct answers)

a. The diver
b. The diving superintendent
c. The diving supervisor
d. The vessel master

A

ABCD

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34
Q

Sonar transmissions may have audio-vestibular effects on the diver, causing disorientation. When diving in an area with sonar transmissions, a diver using a diving helmet is safe from frequencies above?

a. 500 HZ
b. Above 100 Hz, but less than 400 Hz
c. No diving to take place during sonar transmissions
d. Above 50 Hz, but less that 100 Hz

A

a

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35
Q

What topics should be covered in the toolbox talk?

a. All of the below
b. Hazards associated with the task
c. Radio frequency channel to be used
d. Sequence of events

A

a

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36
Q

Who should be present during toolbox talks?

a. Only the next diver to dive
b. all personnel involved or, if this is not practicable, each department should be represented
c. only personnel that are not familiar with diving operations
d. only the inexperienced dive crew

A

b

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37
Q

Who can advise or over ride the supervisor’s decision to terminate a dive?(Tick the correct answers)

a. Installation manager
b. Ship’s master
c. The client representative
d. The diving superintendent

A

ABCD

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38
Q

How long should recorded voice communications with the diver be kept for?

a. 2 years
b. 48 hours
c. 24 hours
d. 12 hours

A

c

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39
Q

What factors should be considered when diving in currents? (Tick the Correct Answers)

a. Type of work carried out
b. The ability of the standby diver being able to rescue the diver
c. Type of equipment used

A

ABC

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40
Q

Who decides to set the environmental working limits for any specific dive? (Tick the correct answers)

a. IOGP
b. IMCA
c. The supervisor has last say to environmental conditions
d. Each diving contractor should define clear environmental limits

A

CD

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41
Q

When is a diving superintendent allowed to stand in for a diving supervisor?

a. When the client is not around to see him
b. When he is appointed in writing as a supervisor
c. Between the hours of 3am - 5am
d. Whenever he feels like it

A

b

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42
Q

The diving contractor is responsible for providing……? (tick the correct answers)

a. Plant and equipment correctly and properly maintained
b. Accommodation and catering
c. A diving project plan
d. Risk assessments

A

ACD

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43
Q

What is the cause of most accidents offshore?

a. Failure to follow procedures
b. Inexperienced crew
c. Not using the correct PPE
d. Poor weather conditions

A

a

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44
Q

If an incident involves a fatality or serious injury, what should
take place besides the implementation of the ERP?

a. Securing the dive log, voice recordings, video recordings, ship’s log, maintenance records
and any other relevant records.

b. Getting signed and dated statements from all those involved
c. Leaving all plant and equipment as it is, unless it is unsafe to do so
d. All the above

A

D

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45
Q

When can the trigger of a HP jet gun be tied in an open position?

a. Never
b. When the diver shows competence in its use
c. When both hands are required to maintain position
d. When the pressure is below 1 00 bar

A

a

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46
Q

How many times can a lever hoist be immersed in water before itis disgarded?

a. Only once
b. As manytimes as the project allows
c. 3 times, but only if for short durations
d. Unlimited times

A

a

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47
Q

How often should internal and external checklist be carried outon the chamber?

a. Before every dive
b. Once every 24 hours
c. At the start and end of the project
d. Monthly

A

a

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48
Q

All medical and equipment locks must have…..

a. Pressure gauges visible to the person operating the lock

b. Baffles on the internal vent to prevent items being sucked in and blocking the exhaust
line

c. A safety interlock system fitted to the clamping mechanism

A

ABC

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49
Q

When working on pipelines and spools, what precaution should
be taken before removing a blind flange, blank, cap or cover from the system?

a. That there is no pressure differential and that the pressure has equalized with ambient
b. That there is a positive pressure to push the item away once its disconnected
c. That there is adequate suction on the bleed valve
d. That they are new and not corroded

A

a

50
Q

Where should the inverter line be attached on the lift bag?

a. At the manufacturer designated strong point/inverter point
b. Parachute type lift bags do not require inverter lines
c. To the quarter turn dump valve on the top of the bag
d. Anywhere that is accessible on the top of the bag

A

a

51
Q

What checks should be done before a lift bag is inflated?

a. Check the divers umbilical is clear from entanglement
b. Check the rigging is correctly fitted and secure
c. Check the quarter turn dump valve is closed
d. All of the above

A

d

52
Q

Who’s responsibility is it to provide a risk assessment for adiving project?

a. The diving supervisor
b. The diving contractor
c. The client

A

b

53
Q

When dealing with overboard scaffolding and tubular, what isthe safety margin applied for diving in the vicinity?

a. 10%
b. 25%
c. 50%
d. 30%

A

d

54
Q

List the reasons why the oxygen percentage of the chamber
atmosphere would increase. (More than one correct answer)

a. BIBS dump valve is closed
b. Poor face seal between diver and BIBS valve
c. Leaking BIBS

A

ABC

55
Q

A diver reaches surface with a small water jet injury on his leftfoot, but confirms that there is no pain, just minor seeping of blood. What actionsshould the supervisor take?

a. Monitor the foot over the next 2 to 3 days
b. Send the diver back in to complete his dive if he is okay with it
c. None, as the bleeding will stop in 2 minutes

d. Follow companies emergency response plan and have the diver sent for medical
treatment as soon as possible

A

d

56
Q

How often should acrylic viewports be replaced?

a. within 5 years of use
b. within 10 years of use
c. within 10 years of fabrication
d. within 15 years of fabrication

A

c

57
Q

How often should a chamber be flushed? (Tick the correctanswers)

a. Flushing of chamber atmosphere is not required when using an air chamber
b. Flushing of chamber atmosphere is not required when using an air chamber
c. Every 1 5 to 20 minutes
d. When O2 level reaches maximum company limits

A

CD

58
Q

Medical locks should?

a. Remain at surface pressure with outer door open and inner door closed and clamped
b. Remain at surface pressure with outer and inner doors closed and clamped
c. Remain at depth with outer and inner doors closed and clamped
d. Remain at depth with outer door closed and clamped and inner door open

A

b

59
Q

Which of the following items would you find in a contingencyplan or an emergency response plan? (Tick the correct answers)

a. Facilities for direct communication with a suitable medical doctor

b. The personnel and equipment required for the evacuation of a diver from a stricken
vessel

c. The method of evacuation of the diver to the designated chamber

A

ABC

60
Q

Exhaust valves on the inside of the chamber should have a T-piece or drilled section of pipe on the inside to prevent? (Tick the correct answers)

a. Prevent small objects being sucked into the exhaust line
b. Accidental closure of the valve
c. Prevent suction injuries to divers

A

AB

61
Q

Which principals should be considered when using lever hoistssubsea? (Tick the correct answers)

a. The equipment should suitable for its intended purpose
b. The equipment should be used within its working load limit (WLL)
c. The personnel using the equipment need not be trained or familiar with its use

A

ABC

62
Q

Who is overall responsible for safety of the dive team?

a. The diving manager
b. The vessel master
c. The diving supervisor
d. The lead diver

A

c

63
Q

What are the back up gas requirements for a chamber? (Tickthe correct answers)

a. Sufficient compressed air needs to be available to pressurise main lock of the deck
decompression chamber to the maximum possible treatment depth (normally 50
metres) plus sufficient air for two complete surface decompression cycles. This air
should either be stored in containers or else supplied bytwo totally independent
dedicated sources

b. 90m3 (3200 cu ft) of breathing quality oxygen needs to be available for emergency
treatment procedures

c. Sufficient compressed air needs to be available to pressurise both locks of the deck
decompression chamber to the maximum possible treatment depth (normally 50
metres) plus sufficient air for three complete surface decompression cycles. This air
should either be stored in containers or else supplied bytwo totally independent
dedicated sources

A

BC

64
Q

When can the inverter line be attached to the item being lifted?

a. When only using 50 % of lift bag capacity
b. At no time
c. When it doubles as the hold back rigging
d. At all times

A

d

65
Q

When can SCUBA be used offshore?

a. Anytime the clients says its okay
b. When it is a small project with no client representative onboard
c. When it is for quick inspection work
d. Never

A

d

66
Q

When diving in contaminated drill mud, what precautionshould be considered?

a. Barrier creams
b. Atmosphere contamination
c. Body protection
d. All of the above

A

d

67
Q

If it is not possible to reduce the risk to an acceptable level,what should be done?

a. Not report the actual risk to the dive team
b. further steps must be taken or an alternative method must be found
c. only use expendable people to do that portion of the risk
d. Continue with the task at that level regardless of any review

A

b

68
Q

Chamber checklist should check on?

a. Function test of each valve
b. The status of each valve
c. Quantities of gas available to the chamber
d. All of the above

A

d

69
Q

Who has overall authority when conducting SIMOPS with arov?

a. Both the diving and ROV supervisor have overall authority
b. The ROV supervisor
c. The diving supervisor
d. The client

A

c

70
Q

Which of the following would be found in a risk assessment?(Tick all the correct answers)

a. Controls to be implemented
b. An identification of the hazards involved in each step
c. A full description of the task broken down into steps

A

ABC

71
Q

What is the minimum air sources are required for a DDC?

a. only one source is required
b. Two totally independent dedicated sources
c. One LP compressor can supply all air requirements
d. One source can the “T” off to both primary and secondary valves

A

b

72
Q

When can a therapeutic treatment take place without achamber attendant?

a. If the patient is a qualified supervisor
b. Never
c. At the end of shift when there is nobody available
d. When the patient is a qualified DMT

A

b

73
Q

Who should be familiar with emergency procedures andcontingency plans?

a. The diving superintendent
b. The project manager
c. The diving supervisor
d. The entire dive team, including vessel master and client

A

d

74
Q

What items should not be allowed into the chamber?

a. Foot wear
b. Matches an lighters
c. Dirty coveralls
d. All of the above

A

D

75
Q

Air diving chambers manufactured after 1 of January 2015 shouldhave a minimum internal diameter of?

a. 72 inches
b. 54 inches
c. 1200 mm
d. 60 inches or 1500 mm

A

d

76
Q

What is the minimum length allowed for the barrel/lance of aHP jet gun?

a. 600 cm
b. 120 mm
c. 60 cm
d. 60 mm

A

c

77
Q

if a diver is working at 30 msw, what is the minimum distancehe should be from scaffolding operations?

a. 33 meters
b. 45 meters
c. 39 meters
d. 34 meters

A

c

78
Q

Which contingency plans and emergency procedures shouldthe supervisor follow?

a. The ones you have carried and used in the past
b. The generic and site specific ones supplied by the diving contractor
c. The ones you used with your previous company, as they were easy to follow
d. The ones which can be easily found online

A

b

79
Q

if there is a major deviation to procedure, what should takeplace before diving continues? (Tick all the correct answers)

a. A management of change (MOC)
b. A new risk assessment
c. A toolbox talk

A

ABC

80
Q

The oxygen in the chamber atmosphere percentage shouldnever be allowed to rise above what % ?

a. 23%
b. 210mb
c. 21 %
d. 19%

A

a

81
Q

A diving bell displaces 6m3 of sea water and weighs 5.4 tonnes.
How much weight must be added to make it 150 kg negatively buoyant?

a. 0.83 tonnes
b. 750 kg
c. 600 kg
d. 930 kg

A

d

82
Q

A diver at 60 fsw is breathing air (21 oxygen/79 Nitrogen). Whatis the pp02 in his mix?

a. 0.0591 bar
b. 591 mb
c. 381 mb
d. 0.381 bar

A

b

83
Q

A diver is working at 40 msw, breathing from a 16 x 50 litre quad at a pressure of
150 bar. How longcould he work for (assume that the quad will be changed over at 40 bar)

a. 10 hours 28 minutes
b. 8 hours 22 minutes
c. 7 hours 20 minutes
d. 7 hours 28 minutes

A

b

84
Q

After filling to 2,800 psi a bail-out bottle is at a temperature of 110 F. What will the
pressure be when
the temperature drops to 48 F?

a. 2459 psi
b. 2495Psi
c. 3221 psi
d. 2954 psi

A

b

85
Q

A diving bell displaces 180 ft3 of sea water and weighs 5.4imperial tons. Is the bell positively buoyant?

a. Yes it is 0.4 tons negative
b. No it is 0.4 tons positive
c. Yes it is 0.23 tons positive
d. No it is 0.23 tons negative

A

d

86
Q

A DMA weighs 9 tonnes and is 2 meters long, 2 meters wide and1 meter high, how much lift is required to make it neutrally buoyant in sea water?

a. 488 kg
b. 5 tonnes
c. 500 kg
d. 4.88 tonnes

A

d

87
Q

What is a divers normal gas consumption rate on surface?

a. 1.5 ft3/minute
b. 1.25ft3/minute
c. 0.8 ft3/minute
d. 1.8 ft3/minute

A

b

88
Q

What is the minimum required pressure and volume requiredfrom an LP compressor to supply 2 divers at 40 msw?

a. Pressure of 14 bar, volume of 280 l/min
b. Pressure of 15 bar, volume of 350 l/min
c. Pressure of 15 bar, volume of 280 l/min
d. Pressure of 14 bar, volume of 350 l/min

A

b

89
Q

A diving bell displaces 5m3 of sea water and weighs 5.4 tonnes.Is the bell positively buoyant?

a. No, it is 250 kg negatively buoyant
b. No, it is 400 kg negatively buoyant
c. Yes, it is 250 kg positively buoyant
d. It is neutrally buoyant

A

a

90
Q

How long would a 10 litre bailout filled to 180 bar last a diver at32 msw?

a. 9 minutes 52 seconds
b. 42 minutes 30 seconds
c. 41 minutes 27 seconds
d. 10 minutes 07 seconds

A

a

91
Q

After filling to 190 bar, a 10 liter bail-out bottle is at atemperature of 36’C. How long will it last a diver working at 40 msw when thetemperature drops to 11 ‘C (allow 10 bar drive pressure for the hat)?

a. 8 minutes 58 seconds
b. 7 minutes 07 seconds
c. 8 minutes 43 seconds
d. 7 minutes 58 seconds

A

d

92
Q

A lightweight LP compressor delivers 250 l/min at a pressure of 15 bar. Two diversare planning to work at 35 msw. Is the air supply sufficient?

a. Supply pressure is adequate but volume is inadequate
b. Both supply pressure and volume is adequate
c. Supply pressure is inadequate but volume is adequate
d. Both supply pressure and volume is inadequate

A

a

93
Q

Convert 7200 kg to tonnes?

a. 7.2 tonnes
b. 720 tonnes
c. 72 tonnes
d. 0.72 tonnes

A

a

94
Q

What is the normal gas consumption rate of a diver at 30 msw?

a. 120 l/min
b. 140 l/min
c. 160 l/min
d. 105 l/min

A

b

95
Q

What is the free gas volume of a 64 bottle quad of 50 litres thatis filled to 180 bar?

a. 576 m3
b. 57.6 m3
c. 576 litres
d. 5760 litres

A

a

96
Q

A diver is working at 110 fsw, what would his consumption beon surface supply?

a. 5 ft3/minute
b. 3.8 ft3/minute
c. 5.4 ft3/minute
d. 6.5 ft3/minute

A

c

97
Q
  1. 21 bar is equals to mb?
    a. 2.Imb
    b. 2100mb
    c. 210mb
    d. 21mb
A

c

98
Q

Convert 34⁰C to absolute temperature?

a. 307⁰ Kelvin
b. 307⁰ Rankin
c. 494⁰ Kelvin
d. 494⁰ Rankin

A

a

99
Q

How many hours is 256 minutes?

a. 4.16 hours
b. 4 hours 26 minutes
c. 4 hours 27 minutes
d. 4 hours 16 minutes

A

d

100
Q

A diver at 35 msw is breathing air (21 oxygen/79 Nitrogen). What is the pp02 in hismix?

a. 9450 mb
b. 0.0945 bar
c. 9.45 bar
d. 945 mb

A

d

101
Q

A diver is working at 140 fsw. He is breathing from a quadwhich contains 22,000 ft3 of gas when it is at a pressure of 3,000 psi. It is now at2,500 psi. How long could the diver work for (assume that the quad will be changedover at 500 psi)?

a. 42 hours 26 minutes
b. 39 hours 19 minutes
c. 37 hours 19 minutes
d. 48 hours 53 minutes

A

c

102
Q

Convert 92’F to ‘C?

a. 60’C
b. 51.1’C
c. 19.1’C
d. 33.3’c

A

d

103
Q

What is the usable gas volume for a 12 litre bailout at 25 mswthat is filled to 200 bar?

a. 2400 litres
b. 2238 litres
c. 2280 litres
d. 2250 litres

A

b

104
Q

What is the floodable volume of a 16 bottle quad of 50 litrecylinders?

800 litres

1600 litres

8 m3

16000 litres

A

a

105
Q

What has to be deducted off the available pressure of a 200 barbailout for a diver at 30 msw to be able to calculate the usable gas volume? (morethan 1 correct answer)

a. 10 bars drive pressure for the hat
b. 4 bars for the absolute pressure
c. 3 bars for the absolute pressure

A

AB

106
Q

1 bar is equals to mm Hg?

a. 570 mm hg
b. 670 mm hg
c. 750mm hg
d. 760 mm hg

A

c

107
Q

2 bars equals psi?

a. 20 psi
b. 29 psi
c. 200 psi
d. 29.4 psi

A

b

108
Q

How much gas is required to pressurise a medical lock with the
volume of 50 litres, from surface to 18 msw?

a. 90 litres
b. 0.9 m3
c. 1.4 m3
d. 140 litres

A

a

109
Q

What is the emergency gas consumption rate of a diver onsurface?

a. 18 l/min
b. 62.2 l/min
c. 40 l/min
d. 35 l/min

A

c

110
Q

What is the weight of 1 cubic meter of sea water?

a. 1.3 tonnes
b. 1030 kg
c. 10.3 kg
d. 1000kg

A

b

111
Q

What is the volume of a medical lock with the diameter of 400mm and length of 500 mm?

a. 0.628 m3
b. 6280 litres
c. 628 litres
d. 62.8 litres

A

d

112
Q

A diver at 40 msw is breathing nitrox (26 oxygen/74 Nitrogen). What is the pp02 inhis mix?

a. 0.13 bar
b. 13 mb
c. 130 mb
d. 1.3bar

A

d

113
Q

Convert 500 ppm to %?

a. 0.5%
b. 5%
c. 0.005%
d. 0.05%

A

d

114
Q

If the maximum allowed PP02 is 1 .4 bar, what is the deepest depth allowed to use a 36/64 nitrox mix?

a. 38 msw
b. 28 fsw
c. 38 fsw
d. 28 msw

A

d

115
Q

Convert 86’F to absolute temperature?

a. 357’Rankin
b. 546’Rankin
c. 546’Kelvin
d. 359’Kelvin

A

b

116
Q

A bail-out bottle has a floodable volume of 8 ltr. How much time has a diver got ifhis surface supplyfails at 35 msw? The bail-out bottle is at a pressure of 190 bar.

a. 8 minutes 21 seconds
b. 7 minutes 07 seconds
c. 7 minutes 48 seconds
d. 8 minutes 54 seconds

A

c

117
Q

What is a volume of a block with the length of 2 meters, heightof 1 meter and width of 1.5 meters?

a. 3 kg
b. 300 litres
c. 3 m3
d. 300 kg

A

c

118
Q

A quad contains 5,200 ft3 when it is at a pressure of 3,000 psi.How much gas does it contain when the pressure is 1,400 psi?

a. 11142ft3
b. 2773 ft3
c. 2426 ft3
d. 1600 psi

A

c

119
Q

After filling to 200 bar, a bail-out bottle is at a temperature of32’C. What will the pressure be when
the temperature drops to 6’C?

a. 183 bar
b. 190 bar
c. 170 bar
d. 218 bar

A

a

120
Q

A chamber system has a volume of 40m3. What volume of gas would it take topressurise it to 50 msw?

a. 200 litres
b. 200 m3
c. 240 litres
d. 240 m3

A

b

Air Diving Supervisors QUESTIONS (12 decks)

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