Low Pressure Boilers Chapter 8

Front 1

When taking over a shift, preliminary safety checks allow the boiler operator to identify any possible problems.

Back 1

True

Front 2

A routine set of duties helps the operator to complete all assigned tasks.

Back 2

True

Front 3

In general, boilers should be blown down every 24 hr.

Back 3

True

Front 4

The main steam stop valve should be closed during normal plant start-up.

Back 4

True

Front 5

The boiler vent must be closed during warm-up to prevent pressure from escaping.

Back 5

False

Front 6

A bottom blowdown can be used to control chemical concentrations in the boiler.

Back 6

True

Front 7

The furnace brickwork should be cooled rapidly for energy efficiency.

Back 7

False

Front 8

There should be pressure in the boiler when dumping.

Back 8

False

Front 9

The boiler should be blown down when it is on a heavy load.

Back 9

False

Front 10

The operator's hand must always be kept on the blowdown valve during blowdown.

Back 10

True

Front 11

The blowdown valve should be kept open long enough for the water level in the gauge glass to drop out of sight.

Back 11

False

Front 12

The quick-opening valve is opened first and closed last during blowdown.

Back 12

True

Front 13

The low water fuel cutoff is checked for proper operation with the burner firing.

Back 13

True

Front 14

Try cocks can be used as a boiler water level indicator.

Back 14

True

Front 15

Steam discharged from the top try cock indicates a low water level.

Back 15

False

Front 16

An evaporation test is performed by blowing down the low water fuel cutoff.

Back 16

False

Front 17

Water added to a boiler with a low water level condition could cause a boiler explosion.

Back 17

True

Front 18

Furnace explosions are caused by steam in the fuel oil.

Back 18

False

Front 19

Any abnormal odor of gas should alert the boiler operator to a possible leak.

Back 19

True

Front 20

The boiler must be filled with water heated to 50°F before it is started for the first time.

Back 20

False

Front 21

Bottom blowdown is performed by opening the gauge glass blowdown valve.

Back 21

False

Front 22

Leaking fuel oil in the furnace could lead to a furnace explosion.

Back 22

True

Front 23

The boiler should be inspected to determine the cause of a low water level condition.

Back 23

True

Front 24

The furnace should not be purged after a flame failure.

Back 24

False

Front 25

A boiler must be taken off-line before it can be inspected.

Back 25

True

Front 26

Main steam stop valves must be tagged out during a boiler inspection.

Back 26

True

Front 27

After a boiler is dumped, it should dry completely before cleaning.

Back 27

False

Front 28

A hydrostatic test is a steam test used to check for boiler leaks.

Back 28

False

Front 29

A malfunctioning steam trap can result in a steambound feedwater pump.

Back 29

True

Front 30

Tools and equipment must be provided for the boiler inspector during boiler inspection.

Back 30

True

Front 31

During a hydrostatic test, the boiler is half filled with water.

Back 31

False

Front 32

Dry lay-up is recommended for boilers that will be out of service for an extended period.

Back 32

True

Front 33

Moisture left on metal surfaces during dry lay-up could cause scale buildup.

Back 33

False

Front 34

More pounds of silica gel than quicklime are required when laying up a boiler dry.

Back 34

True

Front 35

All valves are opened during dry lay-up.

Back 35

False

Front 36

A scratch on the inside of a gauge glass can cause it to break.

Back 36

True

Front 37

A clean gauge glass is necessary to accurately determine boiler water level.

Back 37

True

Front 38

A boiler inspection is commonly performed by the plant manager.

Back 38

False

Front 39

An evaporation test lowers the boiler water level rapidly.

Back 39

False

Front 40

Two people should be present during an evaporation test.

Back 40

True

Front 41

All plants maintain boiler room logs for an 8-hour period.

Back 41

False

Front 42

A boiler room log can be used to determine the cause of a boiler shutdown.

Back 42

True

Front 43

Boiler lay-up is required when the boiler is out of service between shifts.

Back 43

False

Front 44

When warming up the boiler, the low water fuel cutoff should be blown down before the steam pressure gauge records pressure.

Back 44

False

Front 45

When shutting down the boiler, the main steam valve should be closed immediately after the furnace is shut down.

Back 45

False

Front 46

The first thing a boiler operator should do when taking over a shift is ___.

Back 46

check the boiler water level

Front 47

When the low water fuel cutoff is blown down, ___.

Back 47

the burner should shut off

Front 48

The boiler pressure should always be ___ the header pressure when cutting a boiler in on the line.

Back 48

slightly below

Front 49

The boiler should be blown down when it is ___.

Back 49

on a light load

Front 50

ASME code states that on boilers having two bottom blowdown valves, the ___ valve should be closest to the boiler.

Back 50

quick-opening

Front 51

After blowing down the water column and gauge glass, the water should ___ the gauge glass.

Back 51

quickly enter

Front 52

If water cannot be seen in the gauge glass, ___.

Back 52

the burner should be secured

Front 53

A furnace explosion can be caused by ___.

Back 53

a buildup of combustible gases or vapors, leaking gas or fuel oil, & improper furnace purge

Front 54

The ___ blowdown valve is used to dump the boiler.

Back 54

bottom

Front 55

The best method for checking for leaks in gas lines is ___.

Back 55

applying soapy water

Front 56

A(n) ___ test is used to check for leaks in the boiler.

Back 56

hydrostatic

Front 57

All traces of coal, soot, and ash must be removed to prevent ___ from forming when mixed with water.

Back 57

sulfuric acid

Front 58

A steambound pump is caused by ___.

Back 58

excessive water temperature

Front 59

A(n) ___ test is used to test the low water fuel cutoff.

Back 59

evaporation

Front 60

A ___ is used to record information regarding operation of the boiler during a given period of time.

Back 60

boiler room log

Front 61

The boiler must be ___ when the low water fuel cutoff is blown down.

Back 61

firing

Front 62

The flame scanner is removed with the burner firing, the ___.

Back 62

burner should shut off

Front 63

To prevent damage to the furnace brickwork, the furnace ___.

Back 63

should be cooled slowly

Front 64

Boiler ___ is a condition when a boiler is operating at or above its maximum allowable working pressure.

Back 64

overpressure

Front 65

Before dumping the boiler, the boiler heating surface should be ___.

Back 65

cool enough to touch

Front 66

The water column whistle valve is ___ during the hydrostatic test.

Back 66

removed

Front 67

During the hydrostatic test, pressure on the boiler is brought up to ___ times the MAWP.

Back 67

1½

Front 68

Water used to fill the boiler during the hydrostatic test should be a minimum of ___°F.

Back 68

70

Front 69

___ is placed on the water side of the boiler when placing the boiler in dry lay-up.

Back 69

Quicklime

Front 70

Gauge glass nuts are tightened by hand and then turned ___ with a wrench.

Back 70

1/4 of a turn

Front 71

A ___ test is the most accurate method of testing the low water fuel cutoff.

Back 71

evaporation

Front 72

When testing a low water fuel cutoff, the burner should shut off when ___.

Back 72

water is still visible in the gauge glass

Front 73

The internal mechanism of a low water fuel cutoff should be periodically removed from the bowl to check and ___ the float ball.

Back 73

clean

Front 74

To correct a high water condition, a ___ is performed.

Back 74

bottom blowdown

Front 75

New ___ should be used when replacing a broken gauge glass.

Back 75

packing nuts

Front 76

A boiler is given a bottom blowdown to ___.

Back 76

discharge sludge

Front 77

A leak on gas lines and equipment must be repaired ___.

Back 77

by authorized personnel

Front 78

For maximum safety in operation of a low pressure boiler, the low water fuel cutoff should be tested ___.

Back 78

daily

Front 79

Boiler data that is commonly recorded on a boiler room log includes ___.

Back 79

boilers on line, steam pressure, & condensate return temperature

Front 80

All running auxiliaries (fuel oil pumps, fan, water pump, and burner) should be checked for proper ___.

Back 80

temperature, pressure, & lubrication

Front 81

The proper testing of boiler accessories is determined by procedures suggested by ___.

Back 81

ASME Code

Front 82

After testing the flame scanner, ___.

Back 82

reset the programmer

Front 83

During the evaporation test, the ___ is secured.

Back 83

automatic city water makeup feeder

Front 84

During a boiler inspection, the main steam stop valve is ___.

Back 84

closed and tagged out

Front 85

The ___ must be covered with water before water can be added safely.

Back 85

heating surface