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Regulations Flashcards

1
Q

What is the safe working distance for scaffolding ratio

A

1.3m - 1m

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2
Q

PTW records should be kept for how long?

A

12 months

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3
Q

Active vs Passive tending

A

Active- manned
Passive- golden gate

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4
Q

What is the maximum ppO2 in water?

A

1.4bar

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5
Q

What is the max reading for CO2 in chambers?

A

5000ppm

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6
Q

State the minimum amount of OBG required on a bell dive

A

30 minutes of breathing gas at 40L/min (1.5ft3) at the maximum working depth.

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7
Q

What is considered the minimum surface visibility for DP diving operations?

A

Decided by the Vessel master and Diving supervisor
OR
0.5nm / 1000m

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8
Q

Black box recordings must be kept for;

A

24 hours

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9
Q

State the IMCA Auditing Publications for the following;
Air
Saturation
Mixed gas
Portable surface supply

A

Air: D023
Saturation: D024
Mixed Gas: D037
Portable S/S: D040

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10
Q

Divers gas supply must be heated beyond what depth?

A

150m

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11
Q

Supervisor checks before any dive include;

A

Ensure a permit is in place
Relevant personnel informed
Task brief, JSA, Emergency procedures
Machinery isolations and lock outs
Minimum amounts of gas and consumables available.
Suitable weather conditions
Flags and lights displayed

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12
Q

IMCA Publication regarding flying after diving

A

IMCA DMAC D07 Rev.2

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13
Q

Following a DCI, that is treated with full resolution of
Symptoms. How long to wait until flying?

A

24hrs 2000’
72hrs International Flights

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14
Q

Following any uneventful dive state the time to fly after diving

A

No D dive
Less than 60mins
Within the last 12hrs
-2000’ 2hrs
-international 24hrs

Any dives less than 4hrs
Heliox sat more than 4hrs
-2000’ 12hrs
-international 24hrs

Air/nitrox/Trimix saturations
-2000’ 24hrs
-International 48hrs

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15
Q

After a no-D dive less then 10m state time and proximity to a chamber

A

Within 20mins of a chamber for 1hr.

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16
Q

After repeat dives, deco dives or saturation deco state the time and proximity to a chamber

A

Within 20mins for 4hrs
Then
Within 2hrs until 12hrs since surfacing.

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17
Q

DMAC 13 rev2
Returning to work after DCI

A

A) Limb Pain
Uncomplicated- 7 days
Relapse- 14 days

B) Neurological or Pulmonary
Sensory disturbance - 28days reviewed by medical specialist.
All other symptoms - 3 months and reviewed by medical specialist

C) Cutaneous and Lymphatic without neurological involvement
28 days and reviewed by medical specialist

D) Pulmonary Barotrauma
No earlier than 3 months post recovery and review by medical specialist

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18
Q

Before any diving operation can commence, This needs to be in place.

A

The diving project plan

19
Q

Considerations for sea fastening

A

NDT any welds
Consider fuel tanks and other potential hazards

20
Q

All Lars wires should be;

A

Non rotating
Have a 8:1 safety factor
Require annual destructive testing

Should be pressure lubricated every 6 months
Replaced every 2 years.

21
Q

LARS winches must have

A

2 independent brakes one of which should come on automatically.
Should be documented as “man-riding”

22
Q

Standby divers umbilical should be how much longer than D1?

A

2m longer

23
Q

Divers umbilical should be restrained to be how far from any hazards like thrusters

A

5m

24
Q

State umbilical PMS

A

6monthly functioned tested
2years MWP

25
Q

Hot water can scald a diver when heated beyond

A

45degrees

Hot water must be fitted with a hi/low alarm in dive control with temperature displayed

26
Q

State the max current for Normal Working dives

A

Recently updated to 1knt
Should be downtrending tide

27
Q

Serious offshore incidents must be reported to who?

A

OIM
Vessel Master

28
Q

Who is in responsible for the safeguarding of pipelines at a differential pressure?

A

Pipeline owner/operator

29
Q

What equipment can the diver remove on his last decompression stop?

A

None, he must remain fully dressed

30
Q

Name 3 documents required to be in dive control

A

Safety management system
Diving Manual
Company Operations Manual

31
Q

Any modifications to a controlled document will be carried out by?

A

A person designated as a central control point such as QA/QC

32
Q

What document contains guidance on the periodic examination, testing and certification of the diving plant and equipment?

A

IMCA D018

33
Q

Categories of competent personnel and who they are

A

Cat1; Dive Supervisor, LSS,

Cat2; Tech

Cat3; Chief Engineer

Cat4; Manufacturer or Supplier

34
Q

Minimum gas requirements for air diving

A

-Sufficient compressed gas for 2 emergency dives to the full intended depth as reserve.

-sufficient compressed air to pressure both locks of the ddc to maximum treatment depth (50msw) plus sufficient air for 3 complete decompression cycles

-this air must be stored in containers or else be supplied by 2 totally independent dedicated sources.

-90m3 (3200ft3) of medical quality oxygen for emergency treatment procedures

35
Q

State the minimum and maximum ppO2 allowed in bailouts

A

Maximum
1.4bar regardless of depth

Minimum
0.4bar

Minimum ppO2 should be the same as the divers breathing gas. However the minimum is 0.4bar

36
Q

What is the purpose of a bridging document

A

It’s used to interface between contractors and clients. It outlines work procedures, managements structures and emergency response planning.

37
Q

Changes to procedures and equipment will require going through what process?

A

Management of Change

38
Q

What is the maximum depth for surface gas diving?

A

75msw

39
Q

Regarding surface gas diving; for dives between 0-50msw IN WATER deco should be limited to a maximum of how many minutes?

A

100 minutes

40
Q

With regards to surface gas diving;
Dives between 50-75msw should be limited to a maximum bottom time of?

A

30 minutes

41
Q

A basket fitted with a dome is an acceptable wet bell.
True or False?

A

False

42
Q

Diving at Work Regulations 1997 SI 1997 No 2776

A

Forms the basis for the international code of practise

43
Q

Notes regarding Air / Hydraulic winches

A

AIR TUGGERS
-brake automatically applies as default
-NOT fitted with ratchet and pawl
-8:1 safety factor

BELL HYDRAULICS
-2 independant brakes
-tested seperatly ( primary dynamically secondary statically)
-brake auto applies in loss of power situation

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