eoct Flashcards
1
Q
HAZMAT must be handled IAW
A
Federal, state and local regulations
2
Q
Shell and tube heat exchangers are primarily used with what?
A
Internal Combustion engines
3
Q
Where is pertinent identifying information about CASREP information found?
A
PARTSID information set
4
Q
If a full power trial has not been attempted for over two reporting periods as determined by cutter PMS, provide reasons in..?
A
Section VI
5
Q
What section contains the last major overhaul for all diesel engines and gas turbines?
A
Section VI
6
Q
Cutter engineering reports section III to VI include..?
A
III: machinery/electrical
IV: Administrative
V: cutter engineering summary
7
Q
After a boat inspection report, how many days do you have to submit the report?
A
10 days
8
Q
What is considered a revision?
A
50% of the original text or the signature page changes
9
Q
3 types of hydraulic pump
A
gear, vane and piston
10
Q
2 types of rotary actuators
A
hydraulic and rotary motor
11
Q
90% of motors have what type of rotor?
A
Squirrel cage
12
Q
Who can recover refrigerant?
A
only EPA certified technicians
13
Q
What component of a hydraulic system might cause it to “over-ride the workload”
A
the counterbalance valve
14
Q
What should you not do when working on a hydraulic system?
A
depressurize the system or remove hydraulic fluid
15
Q
What is not a coalescing media that would improve the efficiency of oil removal?
A
emulsified polycarbonate
16
Q
What condition is not generally a hazzard when dealing with auxiliary boilers?
A
Diffuser swirl
17
Q
The alkalinity test has been replaced by direct measurements of ____ on Johnson boilers.
A
pH
18
Q
A reily-beaird flash type evaporator has ___ stages.
A
6
19
Q
The temperature pilot to the feedwater temperature regulator should maintain a temperature of __ degrees.
A
170-175
20
Q
The natural ability of two dissimilar liquids to seperate?
A
coalescing
21
Q
What component controls the start up and shut down of an auxiliary boiler?
A
Flame Safeguard Control (FSC)
22
Q
What is not a purpose of an auxiliary boiler?
A
Provide steam for propulsion
23
Q
What percentage of tubes becoming plugged in a tube heat type heat exchanger will cause the heat exchanger to function improperly?
A
10%
24
Q
Current flow between two dissimilar metals will usually cause?
A
Corrossion
25
2 terms to describe gear type mechanisms.
speed and gear ratios
26
what type of shafting is supported by the line shaft spring bearings?
The shafting inside the skin of the ship
27
before engine disassembly for overhaul what component should you check?
face and bore alignment between flywheel and flexible coupling
28
Cracks in a piston crown are caused by?
failure of the cooling system
29
cracked con rods are caused by..?
overloading
30
What causes piston slap?
Worn pistons and liners
31
What form is used to document drills and exercises?
CG 5290
32
How many points are deducted for minor safety violations?
10-15
33
Pressure applied to a confined fluid transmitted undiminished in all directions and acts with equal force on equal areas and at right angles to them.
Pascals Law.
34
For MWT, boiler water is maintained between what parameters?
Alkalinity: 8-11.5
TDS : < 10 ppm
chloride < 1000 ppm
35
3 indicators on a way-wolf boiler
Red : flame out
White: power on
blue : low water
36
What is in place to prevent pump motor and solenoid valves from becoming energized when tank levels are low?
float switch
37
Disadvantages of firetube boilers?
heavy, long warm up time
38
advantages of firetube boilers
easy to operate, cheap to build
39
When you have an internal leakage where you replace the piston packing or unit it is known as...?
Cylinder creep
40
3 most common type of heat exchangers
shell and tube, fin and tube, plate type
41
Hull deflection, various load and ballast conditions, hull speeds and heavy seas can majorly influence what?
Shaft and bearing alignment
42
Guidance for tests, inspections, break-in procedures should be contained in the MPC, tech pub or directed by who?
OEM tech rep
43
Technical Publications fall under what general category?
Directives
44
What establishes policies, procedures and standards for the administration of the CG Directives system and the fleet?
M5215.6
45
On tube heat exchangers the fin is designed to..?
increase surface contact
46
A bright spot on each end of a piston ring is caused by..?
insufficient ring gap
47
What can be caused by excessive oil consumption or excessive cylinder clearance?
Piston slap
48
Who is responsible for ordering flexible hoses, gauges and consumables used to overhaul an internal combustion engine?
the supervisor
49
Shafting outside the skin of the ship is usually supported by?
bearings
50
What power transmission component in a propulsion system transmits power from the driving unit to the driven unit?
The marine propulsion unit
51
Characterized by improper functioning of the torsion vibration dampner
Bent or broken crankshaft
52
Presence of fine abrasives in lubricants could be a sign of?
bearing wear
53
What type of switch is an electromechanical device that requires physical contact between the target object and switch activator?
limit switch
54
What information is not found on the nameplate data label?
torque
55
What is the most common type of AC motor used in industrial motion control systems?
AC induction motor
56
How often should feedwater supply systems be tested?
daily
57
Before conducting a thorough cleaning of a heat exchanger, conduct a preliminary ______________.
inspection
58
What is the best method for cleaning tubes in a shell and tube heat exchanger?
High pressure water jet
59
What is the difference between sensible and latent heat?
Sensible causes a change in temperature..latent does not
60
On a flash type evaporator, the distillate water passes through a _____________________.
three way solenoid
61
Before operating a flash type evaporator, personnel should be thoroughly familiar with
the distilling cycle
62
When cleaning a flash type evaporator, yellow acid water means _______________.
dissolved and heated
63
To establish if there is an air leak in the OWS :
perform hydrostatic test on suction piping and vertical cylinder vessels
64
In an OWS, if the discharge pressure is too high, check for ________________.
fluid viscosity too high
65
Also referred to as stored energy, ______________ is present in a hydraulic system.
potential
66
What piece of information are you likely to find on the name plate of an electric motor?
hertz
67
Internal leakage occurring around the seals or the unit if the walls are scored causes _______________.
Cylinder creep
68
Never operate, repair, adjust, or otherwise tamper with any of the cutters electric or electronic equipment without demonstrating, to the _______________.
division officer
69
The first step in replacing a switch is to _________________________.
Tag out the circuit
70
The internal engine overhaul (documentation) shall be maintained on board the cutter until________________________________.
The next overhaul is accomplished
71
_________________________________ before you start working on an engine.
disable the start circuit and disconnect starter
72
When should you NOT attempt to make a final alignment of propulsion engine/shafting?
WHEN fuel, water, and temporary ballast tanks are empty
73
TO CHECK BORE ALLIGNMENT take measurements of the diameter gap at four equally spaced points on the flanges diameters
A,B,C,D
74
MLC will decide whether to _____________ the overhaul based on the engine condition.
Extend or shorten
75
Exercise evaluations will be maintained by the training officer for a MINIMUM of how many years after the exercise has been completed?
2 years
76
What is the MAXIMUM numerical score that should be used on the exercise evaluation sheets?
100
77
During the walk-through, one of the safety items that you should identify is the ________________ in the spaces where the drill will be conducted.
Heat index
78
After completion of each drill or actual casualty, a ___________ is to be conducted
critique
79
In planning and preparing even minor simulated casualties, consideration must be given to the possibility that the simulation could create an
actual hazzardous condition
80
Drills and exercises shall not begin until permission has been obtained from the commanding officer or ________________ for after-hours duty section drills/exercises
ood
81
Which of the following failures DOES NOT cause low oil pressure in a propulsion transmission?
stuck regulating piston in the selector valve assembly
82
No inspection plate, connection, fitting, or cover that permits access to the gear casing should be removed without specific authorization by the
the EO
83
Bearing inspections at other than scheduled intervals may be required if
conducting a gear tooth mesh check
84
Always check the gear tooth alignment after a major overhaul, or if the ship has been aground or if the _________________ has been disturbed.
shaft alignment
85
The following are potential causes of propulsion gear failure
poor tooth contact, inadequate lubrication, foreign objects.
86
Use a __________________ to check angular alignment.
feeler gauge
87
refers to the distance the face of the hub is out of perpendicular to the shaft centerline
face runout
88
refers to the distance the driving bore of a hub is out of parallel with the shaft centerline
bore runout
89
or face misalignment occurs when the centerlines of the marine transmission and companion flanges are not parallel.
angular
90
An appropriate method to account for shaft droop utilizes a load ring, _____________, and sling.
turn buckle
91
Corrosion of bearing materials causes a chemical action of __________ lubricating oils.
oxidizing
92
The amount of deflection of a crankshaft may be determined by the use of a _______________.
strain gauge
93
are mounted on the crankshafts of some engines to reduce the torsional vibrations.
vibration dampeners
94
What piece of information are you likely to find on the name plate of an electric motor?
hertz
95
he three main types of hydraulic accumulators are spring and weight loaded and ______________.
gas charged
96
Also referred to as stored energy, ______________ is present in a hydraulic system.
potential energy
97
To establish if there is an air leak in the OWS :
perform hydrostatic test on piping and vertical cylinder vessel
98
When cleaning a flash type evaporator, yellow acid water means _______________.
dissolved heat
99
Before operating a flash type evaporator, personnel should be thoroughly familiar with the _______________.
distilling cycle
100
On a flash type evaporator, the distillate water passes through a _
three way solenoid
101
he driving force moving the feedwater is the difference in _________between the stages with each stage being at a lower __________ than the one before it.
pressure
102
On auxiliary boilers, permanent magnets project a strong magnetic field. The field acts as a “stator,†and the feed pump provides the energy to move the liquid _________________.
armature
103
What type of heat does not causes a temperature change?
latent
104
what type of heat does causes a temperature change?
sensible
105
CASREPs must include AIG Six Eight Four Two or AIG Six Eight Four Three as _________ addressees so that CASREP data can be electronically entered into the Navy and Naval Inventory Control Point (NAVICP) databases.
info
106
Notices remain in effect until date of cancellation and are automatically cancelled after
1 year
107
Angular Alignment: 0.0005 inches per inch of companion flange diameter on a gap difference basis
remedies for low oil pressure
108
The major factor influencing shaft and bearing alignment is
HULL DEFLECTION, VARIOUS LOAD AND BALLAST CONDITIONS, HULL SPEEDS, HEAVY SEAS.
109
Inadequate lubrication will not only cause piston wear, the extra friction may also:
cause piston seizure, land breakage, and piston pin bushing wear
110
A satisfactory contact percentage of gear tooth bearing contacting across the axial length of the working surface is _____ percent
80
111
Under what circumstances can a gear with an overheated bearing be allowed to operate?
only under extreme emergencies
112
when does the flashing of the feedwater occur?
when the psi in the flash chamber is lower than the saturation psi of the feed temp.
113
when should you not attempt to make a final alignment of propulsion engine/shafting?
When fuel, water and temporary ballast tanks are empty
114
fuel, water and temporary ballast tanks are filled to normal average operating levels, generally
1/2 to 3/4.
115
a copy of all drill plans should also be included
among departmental training records
116
a copy of all drill plans should also be included
among departmental training records
117
after completion of each drill or actual casualty, a _____is to be conducted.
Critique
118
after completion of each drill or actual casualty, a _____is to be conducted.
Critique
119
Two basic types of OWS
Vacuum gravity and pressure
120
What are the two types of AC motors
induction and synchronous
121
Which type of motor is most widely used in the CG
single phase induction
122
which directive contains a list of electrical safety precautions pertaining to working on AC motors?
NSTM 300
123
upon completion of an overhaul the supervisor must be sure it is logged in which two reporting systems.
cutter engineering report and CMPLUS
124
which manual publishes a complete list of CG units and their distribution lists?
SDL
125
What is the form # for a boat inspection report?
CG 3302
126
clean the tube sheet and inside of the shell using fresh water and either a ___ or plastic scraper
stiff nonmetallic brush
127
back flushing is only required for ___ plate type heat exchangers
sea water cooled
128
disadvantages of a watertube boiler
expensive, require a lot of maintenance
129
disadvantages of a watertube boiler
expensive, require a lot of maintenance
130
another word for boiling point
saturation temperature
131
boiler fuel nozzles will have a number stamped on the body. The first number means__
GPH of how much fuel passes through the nozzle
132
if your OWS will not discharge oil it is either the ___ or ___
oil amplifier relay or oil sensing probe
133
if your OWS will not discharge oil it is either the ___ or ___
oil amplifier relay or oil sensing probe
134
if an electric motor will not start
check the capacitor
135
what component employs an optical system based on the principles of light scattering
oil content detector
136
what component employs an optical system based on the principles of light scattering
oil content detector
137
the clean water inlet and outlet are what type of valves?
solenoid valves
138
partially clogged oil straingers, damaged or worn oil can cause
no oil pressure
139
partially clogged oil straingers, damaged or worn oil can cause
no oil pressure
140
what is the correct repair method for a clutch drum surface that is badly worn or grooved?
re-machine drum surfaces as outined in the manufacturer's tech pubs
141
overheating of a propulsion transmission can be attributed to
trolling at too high of an engine speed
142
which component of a transmission maintains the oil in the reduction gear sump at the proper temperature
selector valve assembly
143
what function does the spring and piston serve on the oil return pipe assembly
regulate the low pressure oil supply
144
what function does the spring and piston serve on the oil return pipe assembly
regulate the low pressure oil supply
145
what alignment function is in place to eliminate shaft excited vibration and noise?
align bearings that support the shaft
146
filters are classified as
full flow or proportional flow
147
filters are classified as
full flow or proportional flow
148
two common types of strainers in hydraulic systems
edge disk, wire mesh
149
Form number for a cutter engineering report
CG 4874
150
guidelines for reports are taken from what publication?
M9000.6
151
which prescribes policies and procedures for the coast guards paperwork management?
M5212.12
152
a minor degradation of a primary mission, or a major degradation or total loss of a secondary mission
cat 2
153
major degradation but not total loss of a primary mission
cat 3
154
causes a loss of at least on primary mission
cat 4
155
for number for a SSMR
4094
156
SSMR that must be completed within 6 months?
Priority 2
157
what chapter/section of the DPRI identifies form for requesting updates, replacements or new directives
Chapter 1 section C
158
where should you log official changes to a directive?
record of changes page
159
SSMR that is to be completed as part of a normal backlog
Priority 3
160
what type of brushes should you use to clean the plates on a plate type heat exchanger?
fiber brushes
161
what type of brushes should you use to clean the plates on a plate type heat exchanger?
fiber brushes
162
2 types of ac motor?
induction and synchronous
