MM test 2

Where on the ship are the two steam generating systems located?

MR no. 1 and MR no. 2

What is the purpose of the main steam stop valve?

Isolate the boiler from the main steam system

Why does the emergency feed and transfer pump have a service air connection?

To permit the pump to be operated with air when steam is not available

The enclosed operating station (EOS) monitor steam temperature, steam pressure, and

Positions of motor operated valves (MOVs)

Prior to maintenance, why are all vent and drain valves opened?

Prevents pressure buildup

Where is operating air pressure from the control pilot applied in the reverse-acting diagram?

Bottom of actuator

What type of valve is used where straight-line flow and minimum restrictions are required?

Gate valve

Which shore steam riser component connects shore steam to the ships 150-pounds per square inch (PSI) steam?

Steam strainer

What equipment uses 150-pounds per square inch (PSI) desuperheated steam assist in purification process?

Lube oil (LO) purifier heater

What is 100-pounds per square (PSI) inch steam is used to service?

Ships laundry

How many 150/100 pounds per square inch (PSI) reducing stations are located in machinery room (MR) 1?

One

What pounds per square inch (PSI) steam is used for ships laundry?

100

Pipe hangers and supports absorb movements on ship, including those imposed by what?

Thermal expansion

Which piping system is painted white?

Steam

The contents of freshwater drain collecting tanks (FWDCT) are discharged overboard by FWDCT pumps or the?

Condensate system

The high-pressure ( HP) steam drain system collects condensate from steam machinery, equipment, and piping that operates above

150

What device indicates the cumulative gallons of waste oil discharge by the oil/water separator (OWS) system?

Flow totalizer

Which of the following are flexible couplings are designed to do?

Transmit power between two components

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

In compartments above the waterline

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

Main drainage system

Where does the oil/water separator (OWS) discharged to?

Oily waste holding tank (OWHT)

Oily waste is composed, in large percentage, of what substance?

Water

Which statement best defines superheated steam?

Steam that has been heated above its saturation temperature

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

Headers

In what equipment does the expansion phase occur?

Main turbines

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

Generation

Boiler operating pressure is defined as?

Constant pressure at which the boiler operates

Which chemical treatment does The Navy used to treat boiler water?

Chelant

Through which valve part does pressurized steam enter?

Nozzle

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

Specified limits

Which valve system uses boiler pressure to control disc movement?

Greno industrial-supply safety valve

What boiler component pressure determines the safety valve pressure limits.

Steam drum

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

Radio flow

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

Casing

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

Bearing

Which of the following must be done before steam is used to operate the main turbine?

Drain system

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

Reaction

When water chemistry test indicates unsatisfactory conditions, what is completed?

surface blowdown

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

Bottom blowdown system

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

30

Reducing valve

Jet pump

Butterfly Valve

What is used to locate pipes, fittings ,valves, and other components using standard symbols?

Piping diagrams

Steam is used for propulsion and also to supply power generation turbines, forced draft blowers, and?

Distilling plants

What is the function of the stop-check valve on the branch connection that supplies steam to the desuperheater?

It prevents backflow leakage from the desuperheater into the steam main

Where is the branch line for the desuperheater leakage test sample cooler attached?

Between the outlet of the motor-operated gate valve and the inlet of the manually-operated stop-check valve per square inch (PSI) steam main?

Where does the water when it is discharged from the main feed pumps?

Main feed piping system

Prior to maintenance, why are all vent and drain valves open?

Prevents pressure buildup

What type of valve is used where straight-line flow and minimum restrictions are required?

Gate valve

What component is used to isolate, direct flow, and control steam system within a system?

Valve

Which of the following is defined as system piping with isolation (stop) valves and relieve valves leading to equipment?

branches

What equipment uses 150-pounds per square inch (PSI) desuperheated steam to assist in the purification process?

Lube oil (LO) purifier heater

What pounds per square inch(PSI) steam is used for sterilizer operations in medical?

50 pounds per square inch (psi)

What pounds per square inch (psi) steam is used for ships laundry?

100

What is 100 pounds per square inch (psi) steam is used to service

Ships laundry

Which type of support is generally used in hot-piping systems?

Variatile-spring support

Pipe hangers and supports absorbs movements on the ships, including those imposed by what?

Thermal expansion

Where does steam fully condensed when it directly comes and contact with condensate from the main condensate system?

De ordering feed tank (DFT)

Which equipment include services, such as laundry and space heaters?

Steam equipment

How many senses are installed on the oily waste holding tank (OWHT ) that controls the operation of the oil/water system?

Two

Which of the following are flexible couplings are designed to do?

Transmit power between two components

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

Maintaining system

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

Eductor

Oily waste is composed, in large percentage, of what substance?

Water

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

Sounding tube overflow

What gases heat the water and water tube boiler?

Combustion

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

Headers

What phase of the basic steam cycle preheat water and pump it back to the boiler?

Feed

As the steam leaves, or exhausts, from the low pressure turbine (LPT) it enters the

Condensate phase

What type of boilers are conventional steam boilers?

D-type

Which refractory material is used as the outer layer?

Firebrick

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

Specified limits

The receiving pressure is the pressure required for the valve to

Close

Through which valve part does pressurize steam enter?

Nozzle

What boiler component pressure determines the safety valve pressure limit?

Steam drum

Which part of a steam turbine controls and contains the steam?

Casing

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 flow within a turbine is described as moving fluid in rotation around the turbines axis?

Radial flow

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

Reaction

Which of the following must be done before steam is used to operate the main turbine?

Drain system

Surface blowdown shall be performed when results of water chemistry test indicate unsatisfactory, except and what condition?

High steam drum water levels

What minimum steam draw pressure is required to indicate bottom and header blowdown

100 pounds per square inch (psi)

What type of fuel is the stripping and reclamation system used for?

JP5 + Disel Fuel,Marine (DFM)

What is the purpose of the OCM?

To monitor the Effluent water quality

Where is acceptable processed water discharged?

Overboard

Where is the OCM mounted and why?

Downstream of an OWS monitor the effluent water

What is designed to transmit power between two components?

Flexible coupling

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

Coupling n shaft alignment

What occurs in the process of alignment?

Align the piece of equipment to the centerline

Who authorizes alignment methods

NAPSEA

(True/False)The fresh water drain system collects condensate and consists of two separate, independent systems

True

How is oily waste created?

Discharge from lube oil, Fuel purifier

What are tanks equipped with?

Air escape, High level alarms

(True/False)Drum type boilers have one or more water drums and two or more water heaters

False

Chemical energy stored in fuel in the fuel is transformed into ___ energy

Thermal

What type of energy turns the shaft and drives the ship?

Mechanical

(True/False)F-type boilers are conventional steam boilers

False

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

Simmering

Steam turbines convert ____ energy into ____ energy

Thermal & mechanical