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Damage Control Flashcards

1
Q

what is the maximum length of a shore?

A

No longer than 30 times its min thickness

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2
Q

What is over 50% of doing shoring correctly

A

Getting the right size shore

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3
Q

What is the most accurate way to measure a shore for cutting?

A

using an adjustable shoring
batten

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4
Q

How short should you cut a timber for shoring purposes?

A

1/2 in short than total needed length to allow for wedges

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5
Q

What can be spread around on deck to prevent slipping

A

Dry sand

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6
Q

When shoring bulkheads to negate flooding what area has the greatest pressure exerted on the shoring

A

Location closest to the bottom of the bulkhead

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7
Q

What additional tools can be used to measure shoring

A

steel measuring tape
Carpenters square
Folding ruler

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8
Q

How large a hole can a plug be used in

A

6 in diameters max

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9
Q

Name four factors to consider when utilizing plugs for damage control

A

Painted plugs DO NOT swell (don’t use)
Square end plugs are better
Wrapping plugs with rags can help seal
Use oakum if available before putting in hole

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10
Q

How do you stop a crack from growing

A

Drill small hole in each end

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11
Q

What is a hinge plate patch typically used for

A

circular plate, 18 inches or less in diameter

can be applied over a submerged hole without going outside the vessel

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12
Q

Name the types of hook bolts

A

T, J, and L

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13
Q

Name an common effective technique to stop a minor pipe leak?

A

Jubilee patch

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14
Q

What usually occurs with any large hole in the hull

A

Piping system leaks

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15
Q

List the three steps to install a soft pipe patch

A

Plug opening with wood plus/wedges

Trim them flush

Wrap area with rubber sheet, back with light metal sheet, place bindings of wire or marline

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16
Q

What should you do if pressure begins to bow a shore?

A

Relieve pressure immediately and if necessary hold in position with nails and cleats

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17
Q

How should shores be placed on strongback

A

to exert pressures perpendicular to the bulkhead.

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18
Q

how should you apply wedges to shoring

A

driven in uniformly from both sides

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19
Q

How do you stop a shore from splitting

A

Use a shole to anchor it.

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20
Q

What are the four steps after damage

A

Establish flooding boundaries
DEWATER ANY FLOODED SPACES ABOVE THE MAIN DECK
SIZE UP THE SITUATION
ELIMINATE OR REDUCE LIST

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20
Q

What are the four steps after damage

A

Establish flooding boundaries
DEWATER ANY FLOODED SPACES ABOVE THE MAIN DECK
SIZE UP THE SITUATION
ELIMINATE OR REDUCE LIST

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20
Q

What are the four steps after damage

A

Establish flooding boundaries
DEWATER ANY FLOODED SPACES ABOVE THE MAIN DECK
SIZE UP THE SITUATION
ELIMINATE OR REDUCE LIST

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21
Q

What reduces the effectiveness of shores

A

When the angle of 2 shores is greater than 90 degrees

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22
Q

What shore placement enables maximum pressure on strongback/bulkhead

A

One that is perpendicular to the bulkhead they are supporting

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23
Two types of wood preferred to use for wedges
Fir, or yellow pine
24
How wide should wedges be
at least as wide as shoring they are used on
25
How long should wedges be
At least 6 times as long as it is thick
26
How big should sholes be
1 inch or more in thickness and from 8 to 12 inches wide.
27
How much does seawater weigh
64 pounds per cubic foot
28
What are the types of pipe ruptures
Simple Elbow Severed Compound Compound rupture flange
29
For a flat patch how big should it be
For ruptures more than 6 inches in diameter, the patch overlap should increase 1 inch for each inch of increased diameter
30
were should the p-100 be stored
damage control deck or above
31
Should you use CSE procedures when training for emergencies like damage control
Yes
32
The desired force that should be obtained by using how many wedges
As few as possible
33
What should be used along with a hammer to drive wedges
A block for driving
34
What is used to seal holes and cracks in low pressure lines and water lines
A soft patch
35
What patch is used to stop minor pipe leaks
Jubilee patch
36
Step one after damage occurs
establish boundaries
37
how do you secure the butt end of a shore?
Only undamaged members of the ships structure
38
What can help spread pressure on on a bulkhead or deck
strongback
39
What can not be retarded or restricted when patching a pipe
The flow of water in the pipe
40
what dogs do you NOT open when inspecting a space for flooding
Do not loosen the dogs opposite of the hinges on watertight doors
41
what is the greatest difficulty when repairing underwater holes
Accessibility
42
What is a hinge plate patch used for
designed for use over a relatively small hole as it has no vertical support to hold it in place
43
What is considered low pressure piping
150 PSI
44
Advantages of plastic pipe repair kit
a. Versatility. b. Simplicity. c. Effectiveness. d. Speed of application. e. Durability
45
What are the pressure and temp limits of a plastic pipe patch
300lbs sq in 200 degrees F
46
Hardening times for a plastic patch
liquid mixture sets in approximately 12 minutes, the paste mixture in approximately 17 minutes
47
What measures taken by damage control team designed to maintian
Watertight integrity
48
Shoring involves what two phases
Stopping/reducing inflow of water Bracing or shoring up damaged structure
49
What is the first step to effective shoring
Clear the deck
50
What are some good tools to use for DC
Mauls, sledges, axes, pinch bars, power tools
51
What angle should shoring be at
45 to 90 degrees
52
What is the usual method of installing shores?
A Triangulation System
53
What are cleats used for
To prevent wedges from moving securing wedges in place Making wider shoals
54
What other purposes can damage control equipment be used
Nothing, DC equipment should only be used for DC
55
Piping can be up and running on how long if you use what technique
30min if you use emergency damage control metallic pipe repair kit properly
56
When should you apply a plastic patch
Before kickover occurs
57
What is the perfect resin temp for a plastic patch
73 degrees F
58
For a plastic patch how far should you extend over hole/crack
4 to 5 inches on either side of rupture
59
How should you never place a shore
never place a shore deliberately below the point of compression

Damage Control (1 decks)

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