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IMCA Docs > IMCA DO16 LIft Bags > Flashcards

IMCA DO16 LIft Bags Flashcards

1
Q

Before a lift bag is put into service is requires what by whom?

A

Function test to SWL by either: DESIGN Category
3 - Chief Engineer
4) - Manufacturer or technical rep.

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2
Q

Before used a bag also has to be inspected that it is manufactured to comply with the relevant standard.

Who can do this inspection?

A

DESIGN Category 3 or 4

3 Chief Engineer
4 Manufacturer

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3
Q

Once in service what is the testing schedule of a lift bag?

A

6 months & 12 months

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4
Q

What is in the 6 monthly tests for a lift bag?

A

Thorough visual:
Body, strops, shackles, master link.

Operation of dump and relief valve

Integrity of hold back and inverter line.

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5
Q

Who can perform the 6 monthly inspections on a lift bag?

A

Design category:
1) Dive sup or LSS
2) Dive tech
3) Cheif engineer / or a
ginger beer.
4) Manufacturer or tech
representing owner

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6
Q

What can be done instead of the annual inspection on board?

A

Sent back to the manufacture / owner for inspection and certification.

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7
Q

Can individual components be replaced on a lift bag?

A

Yes.
As long as they are like for like and come with their own test certificates.

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8
Q

What is the information supplied by the certification?

A

Bag WLL in fresh water
Upthrust < WLL & >95%

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9
Q

What is the minimum canopy safety factor to be?

A

5 : 1

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10
Q

What is the minimum safety factor for strops on a lift bag?

A

7 : 1

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11
Q

What is the accepted method of testing?

A

Drop test.

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12
Q

What must bags be marked with?

A

Unique serial #
Includes: accessories.

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13
Q

A bag should be supplied with a certificate stating what?

A

Serial #
WLL
Manufacturing standard

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14
Q

A bag should have a strong point for an inversion line.

True or False

A

True

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15
Q

What is the safety rating on attachment points on a lift bag?

A

5 : 1

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16
Q

After what date is it compulsory for all lift bags to have an inversion point?

Yes even <50 kg….

A

1st Jan 2018

17
Q

It is recommended that all bags manufactured before 1 Jan 2018 without a inversion line attachment point need what before use?

A

Risk assessment

18
Q

The pairing of lift bags with suitable
inverter lines should therefore be risk assessed on a case-by-case basis.

True or False?

A

True

19
Q

In certain circumstances you do not need a hold back.

True or False?

A

True.

When take the weight out of an object without causing lift.

20
Q

What is considered in the lift plan?

A

Weight
Bags required
Center of gravity
Position of bags
Mud suction

21
Q

Lift bags have been found to have variations of <20% in stated capacity.

True or False

A

True.

Something to keep in mind.

22
Q

What are the two types of lift with air bags?

A

Static (sky hook)

Dynamic (lift and shift)

23
Q

What checks should be made of a lift bag before use? 6 things

A

Check serial # to cert
Test date
Visual of all components
Visual of stitching
Check dump valve
Check inversion line

24
Q

Hold-back rigging may only be omitted
where a task specific risk assessment demonstrates that uncontrolled movement (ascent or descent) of
the load cannot occur.

True or False

A

True

25
Q

What kinds of tings need to be inspected before the use of a lift bag?

A

Serial number and cert
In date load test
Visual inspection
Check dump working
Check inversion line

26
Q

When is a spreader bar to be used with lift bags?

A

With awkward geometries

27
Q

What to be in place before the use of DMA?

A

Task specific risk plan

28
Q

Static hold back rigging can only be omitted with a risk assessment has been carried out.

True or False

A

True

29
Q

What are the features of an air line? (3)

A

Restrained at depth, with a working tail.
3/4 turn valve on lance
Diffuser on lance

30
Q

When inflating lift bags avoid partial filling of bags.

True or False

A

True

31
Q

What is one of the primary concerns with deflation?

A

Interference with the DP

Bell atmosphere contamination.

32
Q

When in service it is the responsibility of the diving contractor that the bag remains fit for use.

True or False

A

True

33
Q

The maintenance record for a bag should be kept in the PMS

True or False

A

True

34
Q

Any repairs to a bag are to be in accordance with the manufactures instructions.

True or False

A

True

IMCA Docs (7 decks)

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