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Supervisor Study > Proceedures > Flashcards

Proceedures Flashcards

1
Q

The amount of compressed air required for surface supply is?

A

Enough for two 30 minute emergency dives to fill working depth

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2
Q

The minimum amount of compressed air for surface supplied diving DDC is?

A

Enough compressed air to pressurise both locks to 50 msw, plus sufficient for 3 surface decompressions.

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3
Q

Maximum amount of carbon monoxide is breathing air is?

A

5 PPM

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4
Q

During a surface sufficed supplied dive you lose comms with both divers. What would you do?

A

Send down the standby diver

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5
Q

During a dive the diver informs you he had lost main gas. What would you do?

A

Abort the dive.

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6
Q

What is the function of an enclosed canopy in a wet bell?

A

To provide air pocket for divers incase of loss of main supply

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7
Q

A diver should remain fully dressed during his last deco stop. True or False

A

True

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8
Q

What is the purpose of the mushroom valve on the oral nasal?

A

To allow diver to breathe from the free flow

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9
Q

Under BSEN 12021 how often should an air sample be analysed?

A

3 months
(IMCA 6 months)

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10
Q

Air dive through a moon pool should only proceed if water depth exceeds draft by?

A

10 msw

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11
Q

Umbilical length from hazard should be not less than?

A

5 meters

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12
Q

A superintendent can perform as a diving supervisor when?

A

If he is a qualified dive supervisor, with a letter of appointment and has the dive log has been signed over.

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13
Q

The stand by diver can NOT perform another function during a dive. True or False?

A

True

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14
Q

Oxygen storage areas should be protected by?

A

A fire deluge system.

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15
Q

According to ACOP dive baskets used for surface orientated diving should have?

A

Emergency breathing has cylinders.

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16
Q

Does air dive control require an oxygen analyser to be online to the divers supply?

A

Yes. With high and low alarms

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17
Q

Co2 analysers work by the principal of?

A

Infra red absorption

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18
Q

Nitrogen narcosis usually starts with water depth inexcess of?

A

30 msw

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19
Q

For Offshore dives from 10 to 50 ,msw or any deco diving, where must the chamber be located?

A

Onsite

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20
Q

Minimum number of diver medics is?

A
  1. One dive team member other than the one in the water.
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21
Q

Acute o2 toxicity occurs above what PPo2?

A

2.8

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22
Q

Above what percentage o2 must a gas be treated as 100%?

A

25%

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23
Q

Electrode in under water cutting must be?

A

Negative

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24
Q

A diving basket must carry at least how many divers?

A

Two

25
Q

There is only one person who can appoint a diving supervisor… who is it?

A

The diving contractor

26
Q

What’s the minimum about of people for surface supplied diving?

A

5

27
Q

What is the minimum amount of people for a closed bell dive?

A

9

28
Q

First aid equipment can be identified by?

A

Red cross on a green background

29
Q

Stand by divers duties are?

A

To remain at the dive station dressed in, helmet ready, comms and bailout checked and gas online.

30
Q

What alert must a DP operator issue in the event of possible collision?

A

Yellow.

31
Q

In a diving operation involving ROV which should leave the worksite first?

A

Diver

32
Q

Imca maximum recommended PPo2 for nitrox diving is?

A

1.4 bar

33
Q

How much longer should a stand by divers umbilical be?

A

2 meters

34
Q

To ensure safety during underwater welding or cutting what should there be?

A

A twin pole knife switch

35
Q

Who is responsible for risk assessments?

A

The diving contractor

36
Q

A radiation source is measured in?

A

Curies

37
Q

Working from a DP vessel, what precaution must a diving supervisor take before commencing HP water jetting?

A

Supervisor informs DPO on bridge

38
Q

Mimimum horizontal separation between a bell and a mooring line should be?

A

50 meters

39
Q

A smoulder fire is discovered in a DDC. What should you tell the diver to do?

A

Go on BIBS and try to extinguish the fire

40
Q

What colour is diving quality oxygen?

A

Black with a white top

41
Q

A diving supervisor is responsible to the contractor for ensuring that…

A

All equipment is tested
He signs divers log books
If he dives another appointed supervisor takes over

42
Q

A chamber must have a leak test every?

A

2.5 years

43
Q

A chamber view port should be discarded after how many years?

A

10

44
Q

A DP red alert can be caused by

A

Safe working limits exceeded

45
Q

During a surface supplied dive comms are lost with the diver. What’s the first thing to try?

A

Line pulls to the diver

46
Q

A diver reports his umbilical is snagged. What should you do?

A

Tell the diver to clear his umbilical

47
Q

Comms are lost to the diver. No response from line pulls… do what?

A

Change over diver gas supply and send the stand by diver.

48
Q

A depth gauge is calibrated every?

A

6 months

49
Q

Maximum depth for air or nitrox diving is?

A

50 msw

50
Q

During a 20 meter dive the client asks if the diver could complete an additional task. What should you do?

A

Carry out a short TRA, and then if time permits get the diver to complete the task

51
Q

Bailouts should be inspected internally every?

A

6 months

52
Q

The maximum amount of water vapour allowed in breathing air is?

A

500 mg/m3

53
Q

During air diving operations you must have at least how much o2 in reserve?

A

90 m3

54
Q

After handling o2 you shouldn’t go near a naked flame for?

A

30 minutes

55
Q

Prior to connecting a HP whip you should?

A

Ensure hoses / fittings are rated for the pressure & check for fatigue and cracks.

56
Q

A flashing DP light must be accompanied by?

A

An audible alarm

57
Q

What is the maximum DP movement at a time?

A

10 meters in two 5 meter steps

58
Q

What could cause o2 build up during surface deco?

A

Poorly fitted BIB

59
Q

What is the stand off distance when doing underwater radiography?

A

8 meters

Supervisor Study (7 decks)

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