Shipboard Elevator Hydraulic Fluid System

Front 1

Liquid that flows easily, such as gasoline, has a _______ Viscosity?

Back 1

Low

Front 2

Hydraulic _______ eliminates the need for complicated system of gears, cams and levers?

Back 2

Fluid

Front 3

The main pump draws from the _______ or Low-pressure (LP) accumulators and charge the high-pressure (HP) accumulators or HP tank?

Back 3

????

Front 4

If the pressure in the exhaust tank exceeds _____ pounds per square inch gauge (PSIG), the exhaust tank relief valve lifts to discharge air from the exhaust tank

Back 4

?????

Front 5

When the main pumps are ______, the filtered and cooled hydraulic fluid is returned to exhaust tank?

Back 5

?????

Front 6

Five physical factors that can affect its behavior.

Back 6

Gravity

Atmosphere

Specified force

Inertia

Friction

Front 7

Viscosity of flow

Back 7

The average speed at which the fluid moves past a given point

Front 8

Viscosity

Back 8

Measure of a fluids resistance to flow

Low - lose

High - thick

Front 9

Liquid viscosity is affected by

Back 9

Changes in temperatures and pressure

Front 10

Friction tends to oppose?

Back 10

Motion

Front 11

Hydraulic on moving parts enables them to?

Back 11

Move more freely

Front 12

Factor that impact chemical stability (Oil molecule)

Back 12

Metal particles

Heat

Oxygen

Water

Front 13

Factor that impact chemical stability (increasing total acid number TAN)

Back 13

Acid

Corrosion

Front 14

Flashpoint

Back 14

The temperature at which a liquid gives off vapors in sufficient quantity to ignite momentarily or flash when a flame is applied

Front 15

Fire Point

Back 15

Temperatures that a distance gives off vapors in sufficient quantity to ignite and continue to burn

Front 16

Flashpoint minimum temperature vary from _______ degrees for lightest oils to _______ degree for the heaviest oils.

Back 16

300

510

Front 17

Four type of hydraulic fluid

Back 17

Petroleum

Synthetic fire resistant

Water base

Synthetic hydrocarbon

Front 18

Petroleum-based fluids

Back 18

Most common used in ships systems

Front 19

Synthetic fire resistant fluids

Back 19

MIL-H-19457

Used where fire resistant is required

Front 20

Which hydraulic fluids are considered hazardous material?

Back 20

All hydraulic fluids are considered hazardous.

Front 21

Information regarding hydraulic fluid refer to?

Back 21

NSTM Chapter 670, volume 2 HMUG Group 12

Front 22

Hydraulics provide the motive for ________?

Back 22

ACE Platform

Front 23

The main pumps and servo pumps continue to operate until the accumulators and the servo control accumulator are?

Back 23

Fully recharged

Front 24

Once recharged the main pumps will then _______ until next demand is initiated.

Back 24

Go off-stroke

Front 25

In emergency situations what can be used to raise and unload platform or circulate hydraulic fluid through exchanger?

Back 25

Sump pumps

Front 26

Belleville spring reseats itself when pressure drops below?

Back 26

90 PSIG

Amphibious HP point is 150 PSIG

Valve reseat at 135

Front 27

When the differential pressure exceeds _______ the piston is pushed away from the indicator button decreasing the magnetic pull.

Back 27

90 PSID

(CVN have the pop up indicators)

Front 28

Exhaust tanks are designed for use at approximately________PSIG?

Back 28

200

Front 29

Exhaust tanks on CVN 73 capacity

Back 29

2,500 gallons

Front 30

How many sight gauges, pressure gauges, fluid flow switches Exhaust tank have

Back 30

Two

Front 31

Circulation pump and filter assembly

Back 31

Pumps hydraulic fluid from exhaust tank through the heat exchanger

Front 32

Circulation pump and filter assembly consists of?

Back 32

AC Motor

Coupling

Hydraulic pump

Relief Valve

Suction strainer

Filter

Temperatures switch and other valves

Front 33

CVN circulation pump is _______?

LHA/LHD circulation pump is____?

Back 33

CVN double cartridge

Amphib is piston pump

Front 34

Circulation pump relief valve prevent the pressure in the discharge from exceeding

Back 34

285 PSIG

Front 35

How many main pumps are there onboard LHA/LHD?

Back 35

Four ( might be 8)

Front 36

Regulates pressure in main pump to?

Back 36

3,300 PSIG

Front 37

Servo tank assembly is the supply tank for?

Back 37

Hydraulic motor

Front 38

CVN ACE has how many lift cables?

Back 38

20

(8 forward and 12 aft)

Front 39

Motor operated valves

Back 39

6” and 10”

Four per ACE on CVN 73

Three per ACE on LHA /LHD 5” and 8”