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CVN 73 ESWS - Engineering
Terms in this set (89)
How many steering units are there?
What type of system operate the steering units?
Closed loop hydraulic system
How many Steering Units are online during normal operations?
Two; one port and one stbd
1 and 4 on even days, 2 and 3 on odd days
Where can you steer the ship from?
Bridge, Trick wheel, secondary control at DCC, Main propulsion ratchet, and pointer
What is the purpose of emergency steering?
Bring rudder amidships during casualty
What is the function of the Steering pumps?
Two independent variable hydraulic pumps that move hydraulic liquid to main system
What is the function of the Trick Wheel?
Provides local-hydraulic control of the steering system in case of failure of the remote steering system
What is the function of the Differential Control Box?
Mechanically positions the tilt box of the main hydraulic pump to the required angle and position
What is the function of the Ram Assembly?
The ram unit is mounted athwart ship and consists of a single ram operated by opposed cylinders. It is connected by links to the tillers of the twin rudders. When oil pressure is applied to one end of the operating cylinder, the ram will move, causing each rudder to move along with it
What is the function of the Emergency Steering pump?
a hand pump and associated service lines for local-manual operation of the ram in case of failure of hydraulic pump units
What is the function of the Rack and pinion follow up assembly?
The rack and pinion follow up assembly transmit a signal to the differential control box when the ordered steering operation has been completed
How many fire pumps are on board?
How many fire pumps are electric?
What powers the non-electric fire pumps?
How many GPM can an electric fire pump put out?
How many GPM can a steam fire pump put out?
What uses the fire main?
The fire main system, reefer units, AMCW, flushing water for toilets, Jet Blast Deflectors, and eductors
What pressure should ship's fire main stay at?
150# +/- 25#
What color are fire main hand wheels?
What type of fire main loop does the GW have?
Composite loop that can be split into 4 sections
What is the primary purpose of the A/C system?
Provide cooling to vital electronic equipment
What is the secondary purpose of the A/C system?
How many A/C plants are on board?
Classify the A/C plants
York 363 Ton Centrifugal, R-236fa
Classify the Reefers
York 7 Ton Reciprocating, R-134a
How many Reefers on onboard?
Where are the Refer units located?
1 & 2 in Fwd A/C MR
3 & 4 in Aft A/C MR
5 in 1 MMR
6 in 2 RAR
7 in 2 MMR
8 & 10 in 3C Shaft Alley
9 at frame 7-25-0-E
What is the designed temp for Chill Water?
What is the primary AC plant for the island?
7 A/C plant in 2MMR
What are the 4 phases of the refrigeration cycle?
Explain the Compression Phase
A low pressure and high temp vapor enters the compressor and becomes a high pressure and high temp vapor
Explain the Condensation Phase
A high pressure and high temp vapor enters the condenser and is turned into a high pressure and high temp liquid
Explain the Expansion Phase
A high temp and high pressure refridgerant enters the TXV on the refers or the orifice on the A/C plants and becomes a low temp, low pressure liquid
Explain the Evaporation Phase
a low pressure and low temp refridgerant enters the evaporator and removes heat from chillwater or air and becomes a low pressure and high temp vapor
How many carapults are there and which are bow/waist?
1 & 2 bow and 3 & 4 waist
How many catapult accumulators are there?
Explain Catapult supervisory control
System to limit the amount of steam the accumulators can draw from MS system
What is the minimum pressure for a catapult shot?
What are the two fire suppression systems with the catapults?
Trough smothering and Launch Valve smothering
Launch Valve smothering is MS reduced to 50# by orifice with only local operation
Trough Smothering is MS reduced to 80# via orifice with local and remote operation
How many O2/N2 plants are onboard?
one in HB#1 Port side, other in HB#3 Stbd side
What are the uses of LOX?
Aviation Breathing Oxygen only
What are the uses of LIN?
Wart clinic, Freeze seals, shrink fittings
What is the storage capacity for LOX/LIN?
1500 gal LOX and 1500 gal LIN each plant
What are the temps associated with LOX/LIN?
-297F for LOX, -320F for LIN
Where is LOX stored?
LOX carts holding a minimum 50 gal
What does the yellow flashing light above O2/N2 signify?
Whose permission is required to dump cryogenic liquid of the side?
How many aircraft elevator engines are there?
What type of Hydraulic fluid is used in the ACE's?
What state is Fryquil dangerous?
What pressure does the ACE operate at?
What kind of system is the ACE engine?
What other ships service is used for the ACE to operate?
What is the max weight load for an ACE?
Where are the ACEs located on the ship?
ACE 1, 2, and 3 Stbd side
ACE 4 is aft port side
What is the purpose of the List control system?
Transfer water to maintain a zero degree list for a level flight deck
How many list control pumps are there?
Where are the list control pumps located?
4A shaft alley
What is the capacity of the List Control pumps?
1800 gpm, 1 1/2 degree list in 20 min
How many ilst control tanks are there?
Ten, five each side
What are the list control tank sizes?
17,000 gal and 36,000 gal
What type of water is used in the list control system?
Potable Water or x-connected with fire main
Where is the List control system operated from?
List control panel in DCC
How many sewage tanks are onboard?
What are the sewage tank capacities?
FWD is 48,000 gal
AFT is 50,000 gal
Machinery space is 248 gal
How many CHT pumps are on board?
Four, two in each CHT pump room
What are the CHT pump classifications?
Eddy pumps, 400 gpm
What are the three operating modes of the CHT system?
In port - pumping to pier
Transit - sewage to tank only
At sea - sewage overboard when > 3 miles from land
What dangerous gas is associated with the CHT system?
Hydrogen sulfide gas
What are the 3 diseases you can get from CHT?
What is the purpose of degaussing A Coil?
to produce a magnetic field that counteracts the magnetic field caused by ship-induced magnetization
What is the purpose of degaussing M Coil?
to produce a magnetic field that counteracts the magnetic field produced by the vertical permanent and vertical induced magnetization fo the ship
What is the purpose of degaussing FP-QP coil?
Primarily to counteract the magnetic field produced by the ship's longitudinal permanent magnetization and is sometimes used to provide some compensation to supplement the M coil for vertical induced magnetization
What is the purpose of degaussing FI-QI Coil?
primarily to counteract the magnetic field produced by the ships longitudinal induced magnetization
What is the purpose of the Oily Waste Separator (OWS)?
used to process oily wastes by seperating oil from water and discharging the oil to waste oil tank and the water overboard
What is the purpose of the Waste Oil Retention Tank?
Receives separated oil from the OWS for later discharge to shore receiving facilities
What is the purpose of the Oily Waste Holding Tank?
Provides capability to store oily waste before processing by an OWS or overboard discharge
What are the types and uses of Fuel Oil onboard?
JP-5 - fuel for helicopters, planes, diesel generators and other equipment
MOGAS - supplies gasoline engine equipment onboard ship
What is the purpose of the Fuel Oil transfer system?
allows transfer of fuel from different fuel oil storage tanks to fuel service tank
What is the purpose of Fuel Oil Stripping system?
allows removal of sediment and water from bottom of fuel tanks
What is the purpose of the JP-5 service system?
provides JP-5 fuel from the fuel tank to the flight deck for aircraft refuel
What is the purpose of the JP-5 transfer system?
allows transfer of JP-5 fuel from tank to tank
What are the responsibilities of the Chief Engineer?
Overall responsible for the entire engineering
What are the responsibilities of the Engineering Duty Officer (EDO)?
Is overall responsible for aux machinery, hotel services, and engineering department watchstanders in port
What are the responsibilities of the Fire Marshall?
to assist the DCO, will aid the DCA in training of personnel and prevention of fires
What is the Naval Ships Technical Manual?
NSTM is the basic engineering doctrine publication of naval sea system command.
What is the Engineering Operational Sequencing System (EOSS)?
to detail the sequential operational functions for complete cycle of plant evolutions.
What are the ranges for High pressure and Low pressure air systems?
High Pressure - 600 to 5000#
Low Pressure - 100 to 125#
What is the purpose of the Lube Oil Quality Management Program?
Establishes minimum requirements for the storage, usage, transfer, and monitoring for quality lube oil onboard
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