MM test 2

Which fuel type is the stripping and reclamation system used for?

Diesel Fuel Marine

How many sensors are installed on the OWHT that control the operation of the OWS pump?

2

Where is a acceptable processed water discharged?

overboard

what monitoring device continuously monitors and indicates the cumulative gallons of waste oil discharged by the oil water separator system?

Flow Totalizer

which device is installed downstream of an oil/water separator or a secondary treatment system monitor the effluent water quality?

Oil content monitor

flexible couplings are designed to?

transit power between two components

What eliminates undue mechanical stress of the pump shaft and extends life rotating machinery?

coupling and shaft alignment

What is the process called when adjusting a place of machinery so the centerline of its shaft’s accurately positioned?

Alignment

What term is considered as the amount of change in relative shaft position that occurs when horizontally mounted machinery changes from room temperature to operating temperature?

Thermal Growth

Alignment methods are endorsed by what naval authority?

NAVSEA

through SYSTEMS OF PIPING, WHAT IS THE MAIN FUNCTION OF SHIPBOARD DRAINAGE SYSTEMS?

removal of normal waste water

What is used for emptying fuel tanks that have been ballasted with seawater?

Main drainage systems

What shipboard drainage component takes suction from the drainage main to the discharge piping leading overboard?

Eductor

Which of the following characteristics is unique to the secondary and special drainage systems?

They function independently of the main drainage system

What is the location of weather deck drainage piping in larger ships?

In components above the water line

The drain system that collects condensate and consists of two separate, independent system is called?

Freshwater drain system

What does the oily waste transfer system minimize the possibility of?

Discharging oil pollutants overboard

Which of the following is a way in which oily waste is created?

Discharge from lube oil, fuel purifier, jet propulsion fuel, and separators

Oil waste is composed, in large percentage, of what sustance?

Water

Tanks are equipped with an air escape, a high-level alarm, and a ?

Sounding tube overflow

The oil/water separator discharges to the?

Oil waste holding tank

If the concentration of oil exceeds preset limits, what activates a three-way solenoid valve to divert the flow back to the oily waste holding tank?

Oil content monitor

Which statement best defines superheated steam?

Steam that has been heated above its saturation temperature

What gases heat the water in a D-type water tube boiler?

Combustion

Drum-type boilers have one or more water drums and one or more water _____?

Headers

During combustion, the chemical energy stored in the fuel oil is transformed into _____ energy?

Thermal

The mechanical energy turns the shaft and drives the?

Ship

In what phase of the basic steam cycle does liquid boil?

Generation

In what equipment does the expansion phase occur?

Main turbines

As the steam leaves, or exhaust, from the low pressure turbine, it enters the?

Condensate phase

What phase of the basic steam cycle preheats water and pumps it back to the boiler?

Feed

What type of boilers are conventional steam boilers?

D-type

Propulsion boilers consist of which two types of drums?

Steam and water

Boiler operating pressure is defined as?

Constant pressure at which the boiler operates

Which chemical treatment does the navy use to treat boiler water?

Chelant

Which refractory material is used as the outer layer?

Firebrick

What is the primary advantage of superheating?

Greater temperature differential

Each boiler is fitted with safety valves to allow steam to escape from the boiler when the pressure rises above?

Specified limits

The reseating pressure is the pressure required for the valves to?

Close

What boiler component pressure determines the safety pressure limits?

Steam drum

Through which valve part does pressurized steam enter?

Nozzle

Which valve system uses boiler pressure to keep seated?

Greno industrial-supply safety valve

What behavior may cause a discrepancy in the valve opening at its specified limits?

Simmering

Steam turbines convert thermal energy into?

Mechanical energy

What part of a steam turbine carries the moving blades that convert the steams kinetic energy to rotating mechanical energy?

Rotor

What part of a stem turbine controls and contains the steam?

Casing

What part of a steam turbine carries and supports the weight of the rotor?

Bearing

What type of steam flow within a turbine is described as moving fluid in rotation around the turbine’s axis?

Radial flow

What type of steam flow within a turbine is described as flowing in a direction that is almost parallel to the axis of the turbine shaft?

Axial flow

What type of steam turbine converts energy from the steam system through a reduction gear, shaft, and propeller to propel the ship?

Reaction

What type of turbines drive forced-draft blowers?

Impulse

If the steam in a turbine flows in only one direction, it is classified as a?

Single flow unit

During warm-up procedures, lube oil is heated to a minimum of?

90F

While alternating spinning the engine during warm-up procedures, take caution not to allow the shafts to be idle longer than?

3 minutes

Do not admit steam to operate the turbine until the exhaust system has been prepared to receive turbine exhaust and the entire system has been properly?

Drained

Boiler water samples shall be obtained by the watch standard within how many minutes of bringing he boiler on-line?

30 minutes

Which system provides a means to remove sludge or total solid concentration?

Bottom blowdown system

A bottom and header blowdown should not be installed if steam drum pressure is less than?

100 PSI

When water chemistry tests indicate unsatisfactory conditions, what is completed?

Surface Blowdown

What is the purpose of surface blowdown?

To clear the boiler of sludge, oil, grease, or suspended solids

Surface blowdown shall be performed when results of water chemistry test indicate unsatisfactory EXCEPT in what condition?

High steam drum water levels

What produces all the steam used in normal ship operation?

Boilers

What type of steam supplies the 150 psi auxiliary steam system?

600-psig desuperheated steam

What purpose does the steam drum serve within the boiler plant?

Receiving feedwater from the economizer and is a place for saturated steam

What component in the boiler plant protects furnace refractories, which allows for higher heat release?

Water wall tubes

Where does steam travel after leaving the superheater via the inlet/outlet header after it splits in two directions?

Main engines and desuperheater

What is the purpose of the boiler plant fuel burner system’s six individual burners?

To atomize the fuel

Waterside inspections shall not exceed how many steaming hours?

4,000

When inspecting the condition of parts, where is the information recorded?

Engineering log

What kind of test is performed prior to opening the boiler for routine inspection?

Operational test

A strength and integrity inspection should be scheduled to coincide with what other event?

Depot level overhaul

Who conducts the planned maintenance inspections on a boiler?

Ships forces

Who shall be fully cognizant of the general conditions of each boiler?

Engineer officer