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MK1 EOCT AUXILIARY EQUIPMENT > Components and Operation of the Way-Wolff Water/Steam System > Flashcards

Components and Operation of the Way-Wolff Water/Steam System Flashcards

1
Q

The burner unit in most CG applications consist of four separate systems. These subsystems are:

A
  • Water system/Steam system
  • Electrical system (includes ignition & control components)
  • Air system
  • Fuel system
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2
Q

As steam is condensed in the steam system, it is returned as water to the _________ where it is stored.

A

Condensate Tank

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3
Q

A condensate or feed pump is used to pump water from the condensate tank to the _____.

A

Boiler

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4
Q

A check valve and soleniod valve are installed between the pump discharge and the boiler water inlet connection to prevent _________.

A

back flow of water through the pump

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5
Q

A stop valve is provided to isolate the boiler from the pump for?

A

Maintenance

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6
Q

A float switch is installed omn the tank to prevent the pump motor and soleniod valve from becoming energized in the event the condensate tank water level is?

A

Low

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7
Q

Two, two inch fittings are provided at the bottom of the _____.

A

Water Drum

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8
Q

Washout/Inspection openings: One of these fittings is located at the lowest point on the ______.

A

Boiler Shell

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9
Q

Washout/Inspection openings: It is used to control sludge in the boiler shell.

A

The fitting located at the lowest point on the boiler shell.

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10
Q

During normal operation of the Way-Wolff, the water level in the sight glass should be approximately ____.

A

Half Full

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11
Q

How many tri-cocks are installed on the boiler shell?

A

Two

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12
Q

They are primarily used as an alternative method of checking the boiler water level in the event the sight glass is inoperative.

A

Two tri-cocks installed in the boiler shell

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13
Q

During normal operation, opening the top tri-cock valve should discharge_____.

A

Steam

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14
Q

During normal operation, opening the bottom tri-cock valve should discharge_____.

A

Water

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15
Q

A _______ is connected to the 4-inch NPT opening near the boiler top. It is used to discharge steam to the ship’s steam system.

A

Steam Discharge Valve

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16
Q

A steam pressure relief valve is connected to the upper boiler shell to relieve excess pressure in the event of over pressurization. It is set to relieve at ___ PSI and vents to the atmosphere.

A

30 PSI

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17
Q

A steam pressure gauge is connected to the upper boiler shell and it is used to indicate?

A

Operating Pressure

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18
Q

How many blowdown valves are located on the boiler?

A

Three

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19
Q

When are blowdowns done?

A

Daily or when the total dissolved solids is above 1000 PPM

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20
Q

This is the primary device to control the start and stop sequence of the burner.

A

The Operative Pressure Control Switch

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21
Q

A safety device designed to shut down the burner in the event that the operative pressure control does not secure the boiler at the normally prescribed cutout point of 26 PSI.

A

The High Limit Pressure Control Switch

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22
Q

If the High Limit Pressure Control Switch cut out, it must be manually reset. What PSI is it adjusted to cut out at?

A

28 PSI

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23
Q

The high limit pressure control switch consist of 2 adjustments, one to set the cut-out point & one to adjust the differential. It is set to cut out at ___ PSI with an 8 PSI differential.

A

26 PSI

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24
Q

What are the 3 general warning/indicator lights on the control panel?

A
  • Flame-out light
  • Low water light
  • Power-on light
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25
Q

A red _______is provided on the control panel which will illuminate anytime the FSC goes through a flame-out condition.

A

Flame-out light

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26
Q

A blue _______ is provided on the control panel which will illuminate anytime the low water cutoff probes indicate a low water condition.

A

Low water light

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27
Q

A white ______ is illuminated anytime the main disconnect switch is closed and 110 volts power is available to the control panel. However is does not indicate power on the secondary side of the five ampere fuses which provide power to the FSC.

A

Power-on light

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28
Q

The ______ is used to control boiler operation based on a safe water level in the boiler.

A

Low Water Relay

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29
Q

The ______ is located in the control panel and serves to energize or de-energize the burner motor.

A

Motor Relay

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30
Q

The _______ is located on the top of the boiler. The motor drives a squirrel cage type blower which provides combustion air to the combustion chamber. The fuel pump which pumps fuel to the nozzles is also attached to the driveshaft.

A

Burner Motor

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31
Q

Two ________ are provided in the control panel. Their purpose is to energize an audible alarm in the event of low water or flame failure. One relay is for flame failure & the other is for low water failure.

A

Alarm Interlock Relays

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32
Q

An _______ is provided to silence the audible alarm. However it does not de-energize the alarm indicating lights if an alarm condition exist.

A

Alarm Silencing Relay

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33
Q

Two ________ relays are installed in the control panel. They are electrically connected to the water level control circuits to prevent short cycling of the controls do to changes in water level due to ship’s motion.

A

Adjustable Time Delay Relays

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34
Q

If at anytime during operation, a low water condition is indicated the _________ work to secure the burner.

A

Time Delay Relays

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35
Q

The Way-Wolff Model 4140M _______ is the electrical control which controls the start up and shutdown sequence of the boiler.

A

Flame Safeguard Control (FSC)

36
Q

I monitor the combustion chamber for presence of flame and will initiate safety shutdown of boiler fails to light off during start up or if the flame prematurely extinguisher during operation. What am I?

A

Flame Safeguard Control (FSC)

37
Q

How does the Flame Safeguard Control for the Way-Wolff Model 4140M monitor flame condition?

A

By a remotely mounted lead sulfide cell detector.

38
Q

The lead sulfide detector is located on ____ of the burner assembly.

A

Top

39
Q

The lead sulfide detector’s purpose is to assure a flame is present WHERE, and to monitor flame presence during WHAT?

A

Flame is present in The Combustion Chamber and monitor flame presence during The Run Cycle

40
Q

The Lead Sulfide Detector, detects WHAT?

A

Infrared Radiation

41
Q

If flame is present, a small amount of current is produced by the lead sulfide detector which is amplified by the amplifier mounted on the FSC. This current is used to keep the relay from initiating WHAT?

A

A Shutdown Sequence Cycle

42
Q

There are two relays installed in the FSC. One relay controls the _______ and one initiates a _______ in the event of a flame failure. The sequence of operation is controlled by a timer motor which is an integral part of the programmer.

A

Burner Motor, Shutdown Sequence

43
Q

A ________ is piped into the boiler shell and serves to secure the boiler in the event of the boiler water becoming dangerously low.

A

Probe Type Low Water Cutoff

44
Q

________ is a secondary fail safe safety shutdown in case the Float-Type low water cutoff and pump control becomes inoperative.

A

Probe-Type low water cutoff

45
Q

If the water level is below the Probe-Type low water cutoff probes, it will cause the low water relay not to be able to reset and thereby causing what to happen?

A

The low water light and audible alarm to become or remain energized.

46
Q

A ______ is piped into the boiler shell and serves as the purpose for securing the boiler in the event the boiler water level becomes low.

A

Float-Type Low Water Cutoff and Pump Control

47
Q

It controls the boiler water level by energizing and de-energizing the feed pump controller and soleniod valve.

A

Float-Type Low Water Cutoff and Pump Control

48
Q

It is the primary safety shutdown for a low water condition.

A

Float-Type Low Water Cutoff and Pump Control

49
Q

Which section of the Float-Type Low Water Cutoff and Pump Control is for burner control?

A

The red section

50
Q

Which section of the Float-Type Low Water Cutoff and Pump Control is for controlling the feed pump?

A

The blue section

51
Q

This device will not allow the burner to start or will shut it down if low water level is experienced during operation. It does not, however, give a low water alarm.

A

Float-Type Low Water Cutoff and Pump Control

52
Q

Two _______ are piped in serie between the fuel pump and nozzles. With a demand for steam, a terminal in the FSC is energized, thereby energizing these soleniods, which allows fuel to flow to the nozzles.

A

Fuel Oil Soleniod Valves

(electrical stop valves)

53
Q

The ________ is mounted on the burner assembly and is used to create high voltage (10,000 volts) and low amperage (.23 amperes) which is required for a spark to be generated acros the ignition electrodes.

A

Ignition Transformer

54
Q

An ______ is the device where high voltage spark is created which ignites the fuel delivery from the nozzle.

A

Ignition Electrode

55
Q

The Ignition Electrode consist of an ________.

A

Electrode wire and ceramic insulator

56
Q

Two Igniton Electrodes are required for each burner assembly and electrical power is supplied by the ________.

A

Ignition Transformer

57
Q

A ________ is provided at the entrance to the engine room and serves to shutdown the boiler remotely in the event of an emergency.

A

Remote Shutdown Switch

58
Q

I am wired in a series with the Fuel Oil Soleniod Valves. If opened, and the boiler is running, a flame out and flame failure alarm will be activated. What am I?

A

Remote Shutdown Switch

59
Q

When I am activated, be sure to hold me in the depressed position until the boiler is completely secured. What am I?

A

Remote Shutdown Switch

60
Q

Manual Resets (momentary contacts) are provided for:

A
  • Alarm Silencing Relay
  • Low Water Relay
  • High Limit Pressure Control
  • Flame Safeguard Control
61
Q

The control panel has ____ sets of fuses installed.

A

Two sets

62
Q

The line coming from the main dsiconnect switch on the Control Panel has _______ fuses installed for the burner motor circuit.

A

15 amp fuses

63
Q

5 ampere protection is provided for the control and alarm circuits on the ______.

A

Control Panel

64
Q

The fan delivers air to the combustion chamber by a ________ which is driven by the burner motor.

A

Squirrel Cage Blower

65
Q

When the burner motor is energized, air is delivered to the combustion chamber via a ______.

A

“Centrifugal” Fan

66
Q

The ______ delivers a high quantity of air for combustion.

A

Squirrel Cage Blower

67
Q

The amount of air delivered to the combustion chamber is controlled by means of a manually adjusted __________ located on the blower inlet.

A

Air Damper

68
Q

After adjusting ________, scribe it’s position into the blower housing for future reference.

A

Air Damper

69
Q

What is the most common fuel used in CG auxiliary boilers?

A

2 Marine Diesel Oil

70
Q

The _____ function is to break up the fuel into small droplets (atomize) for efficient fuel combustion.

A

The Fuel System’s

71
Q

Stores the fuel for use by the boiler.

A

Fuel Tank

72
Q

Used to remove fine particle matter from the fuel before entering the pump.

A

Fuel Oil Filter

Note: May contain either a strainer or filter or both

73
Q

Allows fuel to flow when energized, stops flow when de-energized.

A

Soleniod Oil Valve

Note: Two Fuel Oil Soleniod Valves (electrical stop valves) are piped in a series between the fuel pump and nozzles.

74
Q

Allows for monitoring of fuel pressure.

A

Pressure Guage

75
Q

Allows adjustment and maintains fuel pressure.

A

Pressure regulating Valve

76
Q

Allows for monitoring fuel pump suction pressure (reads in inches of mercury).

A

Vacuum Gauge

77
Q

Supplies fuel under pressure to the nozzles. Attached to the driveshaft of the burner motor. Positive displacement gear type pump.

A

Fuel Pump

78
Q

What is the main purpose of the fuel nozzle?

A

Atomize the fuel

79
Q

To assure efficient combustion, the nozzle atomizes the fuel as it enters the _______. One nozzle is used on this installation.

A

Combustion Chamber.

80
Q

Each fuel nozzle will have a set of numbers stamped on the body. What do these numbers indicate?

A

The first number indicates the amount of fuel that passes through it in gallons per hour; the second number indicates the angle of spray.

81
Q

The ______of the fuel nozzle are important.

A

Spray Angle & Pattern

82
Q

It must match the pattern of the burner combustion air as it is blown through the diffuser at the end of the blower tube.

A

Fuel Spray Angle of the Fuel Nozzle

83
Q

This air pattern is basically a function of burner design but varies with the rate at which the burner is fired, the diffuser used and the setting of the diffuser with respect to the nozzle.

A

The Spray Angle of the Fuel Nozzle

84
Q

If the fuel oil spray angle and pattern do not match the air pattern, some or allof the following conditions made occur during the boiler operation:

A
  • Smokey fire
  • Excessive rumbling or pulsating fire
  • Rapid carbon formation in the combustion chamber and tubes
  • Erractic unstable ignition
85
Q

When renewing a _______, make sure that the replacement is of the same specifications via spray angle and pattern.

A

Fuel Nozzle

86
Q

The fuel enters the____ through a mesh screen, passes through the center screw and then to the distributors.

A

Fuel Nozzle

87
Q

The distributor has angled grooves machined into it which cause a ________ as the fuel leaves the nozzle.

A

swirling pattern

MK1 EOCT AUXILIARY EQUIPMENT (8 decks)

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