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SUP > SUP > Flashcards

SUP Flashcards

0
Q

External Survey

A

Checking for damage ,running gear, sonar, exterior hull

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1
Q

Internal survey :

A

Checking for damage flooding, holes, cracks

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2
Q

All Navy salvage ships have a maximum bow lift of

A

150 Tons

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3
Q

Line handlers should stand__ off of a line while working it.

A

90 degrees

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4
Q

At what temperature is a dry suit or hot water suit recommended ?

A

Below 40 degrees

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5
Q

What are Cofferdams?

A

temporary watertight extensions of the hull to the surface.

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6
Q

What are the 3 types of cofferdams

A
  • Complete
  • Partial
  • Small
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7
Q

A complete cofferdam is used when?

A

Vsl is sunk in sheltered waters
Temp repairs/sealing deck impractical. Main deck has many openings. Make decision to use only after detailed survey by salvage eng and salv officer

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8
Q

What are the UWSH manuals that deal with running gear?

A

Chapter 3,
Chapter 12
Chapter 13
Chapter 18

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9
Q

What NSTM deals with inspecting a CPP?

A

NSTM 245

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10
Q

After divers have surfaced and confirmed no obstruction then the dry dock will ___ to land the unit.

A

Be drained enough

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11
Q

A minimum of __ will be maintained between the floating dry dock and harbor bottom at all times

A

12”

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12
Q

What is the minimum length of the electrode before changing?

A

3”

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13
Q

Safety switches (when open) pose no electrical threat to the diver.

A

True

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14
Q

Both double pole and single pole are switches are authorized?

A

True

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15
Q

A double pole switch is most often used because because?

A

Both the working and the ground lead are opened or closed simultaneously

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16
Q

What are the 3 general types of work documents?

A
  • Maintenance Procedures
  • Formal Work Packages
  • Controlled work packages
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17
Q

Maintenance Procedure MP

A

Task of maintenance performed.

Self explained

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18
Q

Formal Work Package FWP

A

Coordinates in a single document materials required, initial conditions, MP, Test and Inspections and system restoration for the selected maintenance task.

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19
Q

Controlled Work Package CWP

A

Required when higher authority requires a record (OQE) of repairs/maintenance for fabrication, repair, installation, inspection, and testing process for specific systems.

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20
Q

Work Authorization Form

A

Filled out by entity performing work. Signed/verified by CDO. Signed by force who completed once it is done.

21
Q

Using Mk20 (ss) or MK 21 or EXO BR divers may enter sub ballast, mud tanks or cofferdams

A

True

22
Q

Requirements for divers in tanks:

A

Tended by diver outside space, EGS must be inside space or on surface with a whip 50-150 ft long

23
Q

NSTM 074 dictates the hourly testing of the tanks atmosphere.

A

True

24
Q

The air should be flushed twice and tested before a diver removes hat. If diver smells any unusual odors they should don EGS

A

True

25
Q

Oxygen levels less than 19.5% or Greater than___ shall be considered as immediately dangerous to life or health.

A

22%

26
Q

Level I and II Hull inspections are considered as ?

A

Non invasive inspections meaning nothing is removed or disassembled.

27
Q

Level I inspections are in the scope of what?

A

Stern to Stem of the entire hull and appendages.

28
Q

Level II Inspections are in the scope of what?

A

System specific, non invasive.

29
Q

Level 3 inspections are in the scope of what?

A

System specific, invasive procedures requiring some amount of disassembly of the system.

30
Q

Double valve closure is accomplished by using?

A

Installed valves, blank flanges, outside closure plates, or shaft seals.

31
Q

If a system has NOT been drained, open the closest system ____ to conduct a controlled leak check of the single closure.

A

High-point

32
Q

If the system HAS been drained, open the closest system ______ vent to conduct a controlled leak check of the single closure.

A

Low-point

33
Q

An SRD is?

A

Sonar Rubber Dome, bow or Keel mounted.

34
Q

SRD purpose

A

Surrounds and protects the ships sonar system. In service, it is filled with water at a pressure sufficient to withstand hydrodynamic loads. Provides a low drag shape with smooth, quiet, non cavitation water flow.

35
Q

When required (Radcon) divers shall have a ?

A

Thermal Luminescence Dosimeter (TLD)

36
Q

Contaminated areas found on Radcon hull surveys shall be ?

A

Marked so divers can see them

37
Q

Quad blocks for purchase systems should have 2 ___ 4 sheave blocks.

A

5/8”

38
Q

Quad blocks should have ___ ft of ___ “ wire rope

A

1200

5/8

39
Q

Main bow roller does what function?

A

Supplies all or part of the lift force needed to recover a ship or other object. All navy ships are limited to a bow lift capacity of 150 tons.
75 tons per wire. Can be used in conjunction with stern(150) for total of 300 tons using all 4 wires.

40
Q

When leading chain around a corner the dia. Of the bend must be at least __ times the dia. Of the bar that forms the chain.

A

7

41
Q

When chain is led over or around a curved surface at least __ links of the chain should be in contact with the curved surface.

A

3

42
Q

Linear puller has an approximate pull of?

A

200,000

43
Q

What are the two different methods of dewatering ?

A
  • Pumping

- compressed air dewatering

44
Q

Linear puller can apply what level of pull to beach gear?

A

50 Tons

45
Q

Which patching materials may be used for small openings?

A

Plywood.

46
Q

What are 3 different types of leaks?

A
  • Minor
  • Moderate
  • Major
47
Q

Minor Leaks are ?

A

Hull cracks, broken pipes, loose seems, small holes.

-patch with wooden plugs, wedges and GRP.

48
Q

Moderate Leaks

A

Hull or blkhd opening that cannot be closed as above usually requiring preparation.

49
Q

Major Leaks

A
  • Extensive hull/blkhd damage

- patches require large steel work operations and extensive dive ops

50
Q

What are the two types of educators?

A
  • Peri-Jet

- S type

SUP (1 decks)

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