Non-propulsion Auxiliary Equipment Flashcards
most modern steering gear units are driven by what type of unit?
electro hydraulic type
the electro hydraulic steering unit consists of what two major parts?
the ram unit and a power unit
what causes the ram to move on electro hydraulic steering unit?
oil pressure applied to one end of of the operating cylinder
what will move along wit the ram unit?
the rudder
the power unit consists of how many independent units?
two, one is online and the other in standby
what protects the steering pump unit from over pressurization?
a relief valve
in what case of a failure to both hydraulic pumps what is provided as backup pumping system?
a hand pump
the trick wheel allows local control of what?
the rudder
what three types of anchor windless will you find onboard ship?
electric, electrohydraulic and hand driven
how many pumps normally drive one wildcat?
one
hand driven windlasses are used on what type of vessels?
small ships where the anchor gear can be handles without excessive effort by operating personnel
wen operating the anchor windlass care must be taken to inspect what frequently?
compression of brake linings and the clearance between the brake drum and band
navy electro hydraulic winches are all classified as what type?
drum type
the drum shaft on an electro hydraulic winch is normally driven by what?
hydraulic motor
where band brakes are used on the winch drums what should be inspected frequently?
the friction linings
what prevents slippage of the winch when in operation?
a locking device
cranes are designed to withstand what percent of rated load at no speed?
150 percent
all cranes must withstand a static load of what?
200 percent of rated load without damage or distortion
king post bearing allows for what types of loads?
vertical or horizontal
define the term boom when associated with a. shipboard crane?
a structural unit used to lift, transfer or support heavy weights
the king post bearing is located where?
at the top of the kingpost
modern aircraft carrier elevators are powered by what?
an electro hydraulic power unit
what is the lifting capacity of an aircraft elevator?
79, 000 to 105, 000 pounds
what medium is used along with oil pressure to power the aircraft elevator?
nitrogen
movement of the balanced piston type valve to the off center position will cause the aircraft elevator to?
move upward
what prevents overtravel of the aircraft elevator?
an electrical stopping device which limits the stroke of the ram
classify the two types of conveyors commonly used aboard ship?
gravity and powered
conveyors are usually what size?
18 inches wide but they can be 12 inches wide for use in restricted passageways
powered conveyors are configured in what two ways?
vertically and horizontally
steam-jacketed kettles operate at a maximum pressure of what?
45 psi
what prevents steam-jacketed kettle over pressurization?
a relief valve set at 45 psi
steam-jacketted kettles are made of what material?
corrosion resisting steel
a steamer operates at what pressure?
5-7 psi
dishwashing machines are classified into what three groups?
one, two or three machines
which dishwashing machine is fully automatic?
three-tank machine
the temperature of the wastewater must be maintained within what parameters?
140-160 degrees F.
Bacteria in the water is maintained by what?
regulation of water temperature
the hot water rinse is controlled by an automatic steam-mixing valve which regulates temperature to?
180-195 degrees F.
what is used to descale a dishwasher?
orthophosphoric acid, 85 percent
prevention of scale in dishwashing machines is essential for what two reasons?
excessive scale will clog pipes and drains; scale deposits provide a haven for harmful bacteria
in order to calculate the required amount of descaling solution what must be known about the dishwashing machine?
capacity in gallons
