damage control Flashcards
0
Q
You can locate cutout valves by using what diagram?
A
Firemain diagram/DC plates
1
Q
What reference is NSTM 079 Volume 2?
A
Damage control-practical damage control
2
Q
When rigging a jumper hose to a flange, what fitting must be used?
A
A double female
3
Q
List three piping systems that should be restored immediately if damaged?
A
ASW
Firemain
Chill water supplying vital spaces
4
Q
Disadvantage of rigging a jumper to a fire station?
A
lose the use of two fire plugs for fire fighting
5
Q
What should be used top hold flanges together?
A
Bolt or C clamp
6
Q
Forward edge of the stern is the ?
A
cutwater
7
Q
Each compartment is given an number, this number is on a plate secured to the door and on a ___X___ yellow rectangle on the bulkhead called the bulls eye.
A
11 inch x 15 inch
8
Q
When a compartement extends through two or more decks, which number is used to show what deck it is on?
A
the lower deck
9
Q
What letter would a compartment holding stores or stowage be?
A
A
10
Q
Equation for a cubic foot
A
12”x12”x12”
11
Q
One cubic yard is equal to?
A
3’x3’x3’ or 27 cubic ft
12
Q
According to niosh, that under ideal conditions what is the maximum weight to be lifted with two hands by one person?
A
51lbs
13
Q
An estimate of wood, screws, and a finishing product for a project would be what kind of estimate?
A
Materials
14
Q
What type of estimate consist of a list of various types of equipment required to complete a given task?
A
Equipment
15
Q
How many square inches are in a square foot?
A
144
16
Q
One cubic foot is equal to?
A
12”x12”x12”
17
Q
What are the measurements in a board foot?
A
12”x12”x1”
18
Q
How many board feet are there in a piece of wood 2”x8”x6’?
A
8
19
Q
What is usually the first step when planning a project?
A
Obtain or create a drawing
20
Q
PMS manual is broken down into what six section?
A
Maintenance schedule Record of changes Letter of promulgation Unit distribution System description PMS procedures index
21
Q
Each MPC is listed in the PMS procedures index and broken down into what four section?
A
Section 1- Auxiliary (A)
Section 2- Electrical (E)
Section 3- Main prop/Machinery (M)
Section 4- Damage Control (R)
22
Q
Each MPC serial number is broken down into three components, what are they?
A
First indicates the system it belongs to.
second indicates the frequency.
Third is the numerical indexing identification number
23
Q
How many blocks of information are there in addition to the MPC serial number?
A
10
24
How do you find the cutter PMS completion percentage?
Number of completed PMS (minus daily and weekly) divided by number of procedures scheduled times 100= percent complete
25
Where will Cutter PMS completion percentages be listed at?
Cutter engineering report
26
THE SHIPS WORK BREAK-DOWN STRUCTURE GROUPS SIMILAR NAVAL ENGINEERING EQUIPMENT INTO CATEGORIES AND ASSIGNS THOSE CATEGORIES THREE DIGIT CODES BETWEEN ___ AND ____
001-999
27
WHAT COMDTINST IS THE NAVAL ENGINEERING MANUAL?
M9000.6
28
What is FEDLOG?
A logistics information system that allows you to retrieve information from the Federal Logistics information system(FLIS). Contains management, part numbers and data for items in FED stock.
29
What is the MICA manual?
Management information for configuration and allowances.Contains detailed supply and technical information on every piece of equipment attached to a specific unit.
30
This reference provides guidance to Coast Guard personnel responsible for safe operation, maintenance, and repair of engineer equipment?
NEM
31
The supply module of CMPLUS allows which functions?
Accessing inventory information.
| Create/update/track purchase request for supplies.
32
What are corrective maintenance actions used for?
CMA are used to record and update unscheduled maintenance repair and casualties
33
Which database system allows you to manage personnel rating information required for performing maintenance procedures?
CMPLUS
34
Which CMPLUS option is used to identify maintenance and unit operations due within a specific timeframe?
Maintenance scheduler option.
35
Maintenance history reports can be selected, sorted, and printed by which of the following selections?
work center, maintenance procedures, all unit maintenance and CI
36
Presence of cavities in the weld metal?
Porosity
37
What causes porosity in welds?
Gases that are trapped in the weld pool as it solidifies.
38
What four forms of porosity are there?
Distribution, Surface breaking pores, Wormhole, crater pipes
39
What are the main causes of porosity in a weld?
Air entrapment from leaks in shielding gas, dust rust oil grease moisture on base metal, excessive current or arc length, moisture in shielding gas lines
40
Spatter is caused by what?
long arc length, high welding current, improper electrode angles
41
Causes of a solidification crack?
insufficient weld bead size or shape, welding under high restraint, material properties such as high impurity content
42
Undercut can by detected by the naked eye and also using what gauge?
V-WAC gauge
43
Excess weld metal in a weld is called overfill, reinforcement and _____ when it protrudes beyond the weld interface at the toe of the weld.
Overlap
44
Test used to identify or determine the various effects of discontinuities within a weld.
Destructive testing
45
Minor flaws in a weld are known as what?
discontinuities
46
Information on NDT criteria can be found where?
MIL-STD 2035
47
What are the five methods used in NDT?
```
Visual (VT)
Magnetic particle (MT)
Liquid penetrant (PT)
Ultrasonic testing (UT)
X-Ray (RT)
```
48
What are some of the limitations of the MT Magnetic particle inspection method?
Cannot be used with austenitic steels, joints may be falsely interpreted as unsound
49
Ultrasonic Testing UT uses high frequency sound waves at more that _____ Megahertz MHz
one million
50
To ensure good contact is made between the transducer and the material during UT, what must be used?
A couplant. can be water, oil or glycerol
51
Which defect is caused by absorption of nitrogen, oxygen, and hydrogen in the molten weld pool that is released on solidification and becomes trapped in a weld metal?
Porosity
52
Which type of weld defect is principally pieces trapped or included in the weld?
Slag inclusion
53
What type of weld defect is the most serious type of imperfection found in a weld?
Solidification cracking
54
Undercut welding defects can be prevented by what?
Reducing travel speed, welding voltage and welding current
55
What could result if you touch un-insulated electrodes or holders with bare skin or wet gloves?
A fatal shock
56
What is the purpose of having a shielding gas out of the nozzle in GMAW?
Keep oxygen and impurities in the air from contacting the weld.
57
Which type of current is not used in GMAW?
AC
58
What are the three methods for transferring metal across the arc in the GMAW process?
Globular transfer, Spray transfer, Pulsed-spray transfer
59
What are the three power sources used with GMAW?
Transformers-rectifier, inverters, engine-driven generators
60
Pressure rolls have one or two grooves cut in them and they are sized for specific wire ______.
Diameter
61
Which shielding gas is used for GMAW and produces a weld that covers well, but has an unstable arc with a great deal of splatter?
Carbon dioxide
62
What is another name for a proper shielding gas flow rate?
Laminar flow
63
What type of GMAW gun is used with argon or helium above 300A or for continuous duty?
Water-cooled
64
In GMAW, what are the two types of liners?
Steel coil, teflon
65
Contact tubes are made from _____.
Copper or copper alloys
66
What type of liner us used with softer materials such as aluminum?
Teflon
67
What is increased as the electrode extension increases?
Resistance heating of electrode
68
Which GMAW method gives the best penetration when using the flat welding position?
Backhand
69
What protective clothing is required to prevent burns when making an out of position weld?
```
Leathers
A)cap
B)Coat
C)Cape
D)Chaps
```
70
How do you bleed the gas lines when shutting down the GMAW station?
Squeeze gun trigger for a few seconds
71
At what angles are the electrode and gun held if the backhand welding procedure is used to make a flat fillet weld?
5-15 degrees forward of the vertical axis
72
What two metal transfer methods are recommended for overhead welding?
Short circuiting and pulsed spray
73
GMAW is done using direct current electrode positive (DCEP) also known as?
Direct current reverse polarity (DCRP)
74
For every pound of solid electrode wire used, ___ to___ percent becomes deposited weld metal
92-98
75
SMAW deposits ____ to____ percent of the electrode wire as weld metal
60-70
76
Short circuit gas metal arc welding is used with high or low welding currents?
low
77
GMAW-S uses wire sizes under what size?
0.045 inches
78
Since short circuit gas metal arc welding has a low-heat input, it is also used to weld thick section in what positions?
overhead and vertical
79
The droplet transfer or short circuiting process repeats itself how many times per second?
20-200 times per second
80
Where must the welding current be set when using the globular metal transfer method?
slightly above the range used for short circuiting
81
Spray transfer will only take place when a high percentage of ____ is used
argon
82
How much percent argon shielding gas is used when welding nonferrous metals and alloys?
100%
83
The transition current decreases as the electrode extends farther from the contact tube. T or F
True
84
Spray transfer only occurs when ___ percent argon is used as shielding gas.
90%
85
What position is spray transfer best done in and on metal of what thickness?
flat or horizontal and metal that is over 1/8in thick
86
Pulsed spray transfer only occurs when?
During the peak current within the pulsed cycle
87
Pertaining to pulsed spray transfer, basic welders allow the welder to select pulse frequencies of ____ to _____ pulses per second.
60-120
88
GMAW units with wire spool contained in machine run off of what power?
115v or 230v AC
89
What two types of penetrating liquids are there for Liquid penetrate NDT ?
Fluorescent and visible dye
90
How long should you allow the liquid to penetrate after applying and what is this time referranced to as?
20 minutes, dwell time
91
What type of weld inspection is often referred to as an extension of the visual inspection?
Liquid Penetrate Test PT
92
What is the minimum lens shade number for nonferrous GMAW/MIG welding?
Number 11
93
What is the minimum lens shade for ferrous GMAW/MIG welding?
Number 12
94
The switch on the wire drive control panel used to rotate the drive motor slowly is called what?
inch switch or jog switch
95
What is the term used to describe when a wire gets jammed in the wire feeder?
birds nest
96
What are the fiver inert gases used for GMAW?
```
Argon AR
Helium HE
Oxygen O2
Carbon dioxide CO2
Nitrogen N2
```
97
This gas causes a squeezing of the arc, resulting in deep penetrtaion, a narrow bead and almost no spatter
Argon
98
True or false, Helium transfers heat through the arc better than argon?
True
99
Beads from this gas have very good contour, are wide and have deep penetration with no undercutting.
Carbon Dioxide
100
About 7 to 12 percent of the CO2 used in GMAW becomes what hazardous gas?
CO Carbon Monoxide
101
A mixture of Argon and Helium uses what percentages of each gas?
25% Argon and 75% Helium
102
What are the advantages of using a argon-helium mixture?
Gives deeper penetration with arc stability, Reduces spatter to almost zero, produces good welds on thick nonferrrous sections
103
What may cause a popping sound while mig welding?
Too little gas
104
Gas flow rates of ____ to____ Cubic feet per hour (CFH) are acceptable for most welding application
20-30
105
Torches used with CO2 above 600A or during continuous duty are gas or water cooled?
Water cooled
106
What material are contact tubes on GMAW guns made of?
Copper or copper alloys
107
GMAW nozzle exit diameters are based on a ____inch increment
1/16th
108
Hardened steel liners are used for what of steels?
steel and stainless steel wires
109
What can be done to remove fine particles stuck in a GMAW wire liner?
blow compressed air through it
110
Pertaining to GMAW, square groove edges on metal up to how thick can be accomplished without edge sharping?
3/8th inch
