T or F

With an increase of pressure, the latent heat content of one pound of steam will decrease?

T or F

An increase in pressure will cause the boiling temperature of a liquid to decrease?

T or F

It is possible to boil water at 78F?

T or F

When steam is superheating its pressure and temperature are increased?

T or F

The boiling and condensing temperature of water is the same at any given pressure?

T or F

The volume of one pound of steam at 100 psig is 4 cubic feet per pound

T or F

The latent heat content of one pound of steam at 20 psig is 983 Btu?

T or F

The Boiling Temperature of water at 25 psia is 267F?

T or F

The condensing temperature of steam is 125psig at 212F

Heat that can be indicated with a thermometer is called?

The instantaneous change of state from a liquid to a vapor which takes place when a liquid flows from a high to a low pressure area, withouth a corresponding drop in temperature, is called?

Boiling

Flashing

Evaporation

Superheating

T or F

A low-pressure steam boiler is designed to operate at pressures up to 30 psig?

T or F

In order to keep the float chamber of a low water cutoff clean it must be blown down on a regular basis?  

T or F

In order to clean an electric probe low water cutoff it must be removed from the boiler?

T or F

The distance required between the bottom of the last steam carrying line and the boiler water line is known as the dry return?

T or F

Any return line that is located below the water line of a boiler is known as a wet return line?

T or F

The line that supplies seam directly to the heating units is called a dry supply?

T or F

The cutout pressure of an additive differential pressuretrol is ste by adding the cut in setting to the cutout setting?

T or F

A compound gage should NEVER be installed on a low pressure steam boiler?

The device that controls the pressure in a low pressure steam boiler is called a?

Pressuretrol

Aquastat

thermostat

thermocouple

The safety relief valve that is installed on a low pressure steam boiler opens when a boiler pressure reaches?

30psig and resets at 27psig

3psig and reseats at 1psig

15psig an reseats at 12psig

18psig and reseats at 15 psig

A pipe siphon (pigtail) forms a water seal that prevents raw steam from entering and damaging?

Sight Glass

Safety Valve

Pressure Gauge

Hartford Loop

The two basic types of low water cut offs are

Float type and electric probe type

Float type and return type

Electric probe type and siphon type

Differential type and aquastat type

The line that connects the steam header to a boiler return line is the

Steam Header

Hartford Loop

Drip Connection

Equalizing line

T or F

Automatic air vents open when system pressure is increased?

T or F

The tee for the main vent should be placed 3' from the last steam carrying main?

T or F

A 6" to 10" long pipe nipple should be installed between the top of the tee and the main vent?

T or F

The bottom of a steam header must be at least 12" above the boiler water line?

False

It must be 24" above the boiler water line.

T or F

In a one pipe parallel flow steam heating system, the steam supply main should be pitched at least 1/2" for each 20' length of pipe distance?

False

1" / 20'

The arrangement of the return piping on a steam boiler that would reduce the likelihood of a low water condition in the boiler is called a

Equalizer

Reverse return

Hartford loop

Wet return

The return that cannot contain air or steam is called a

Wet return

Dry return

Reverse return

Direct return

The return line that could contain air steam or water is called a

Wet return

Dry return

Reverse return

Direct return

The "A" dimension, the length of pipe used to overcome the pressure drop in a one pipe gravity steam heating system should be?

14"

12"

28"

a close nipple

Pockets of condensate in steam lines could result in

carryover

foaming

priming

water hammer

The device tha tprevents a vacuum from forming inside a one pipe gravity return steam heating system is a

check valve

steam trap

air vent

safety relief valve

The carryover of small particles of water into steam piping is known as

priming

foaming

spotting

trapping

The rapid flucuation of the water level in a boiler which is created by impurities on the surface of the water is called?

Priming

Foaming

Spotting

Trapping

Steam flow into the radiators in a one pipe gravity return steam heating system can be controlled by?

Adjusting the radiator valve

Adjusting the pressuretrol

Adjusting the boiler firing rate

Installing an air vent with a different venting capacity

T or F

Installed correctly, the discharge from a thermostatic steam trap is not subject to freeze up problems?

T or F

Under normal operation, air and condensate are discharged from a float and thermostatic trap through the same orifice?

T or F

Thermodynamic steam traps operate due to the difference in teh thermal energy or heat content between the steam and the condensate?

T or F

The discharge of condensate from an inverted bucket steam trap is continuous?

T or F

A thermostatic steam trap discharges condensate as soon as it enters the trap?

T or F

An inverted bucket steam trap should be installed if a large amount of air must be quickly removed from a steam system?

Thermostatic traps are opened and closed by a (an)

Float

Inverted bucket

Electric sensor

Flexible bellows

In a float and thermostatic trap the float rises to discharge?

Condensate

Air and Steam

Air

Steam

A thermostatic trap that failed in the closed position would cause a heating unit to become?

Steambound

Waterlogged

Superheated

Airbound

Condensate in steam lines could result in?

Water Hammer

Priming

Foaming

Carryover

Steam traps remove ______ and _____ from steam lines?

The type of traps normally used on steam radiators are?

F&T Traps

Disc Traps

Inverted bucket traps

Thermostatic traps

In order to return condensate to a boiler, the height of the water column needed to overcome the pressure drop in a two pipe gravity return system is?

28"

28" for each pound of pressure the boiler is producing

2" to 4"

15" to 18"

Air is eliminated from a two pipe gravity return steam heating system by a

Vacuum pump

condensate receiver vent

Boiler feed pump vent

Main vent

In a two pipe gravity return system, the device that prevents raw steam from entering the condensate return piping is a:

Hartford loop

Dry return

Main vent

Steam trap

A _____ is used to protect condensate pumps from dirt, slag, etc...

The pump motor on a condensate receiver is usually started by

a low water condition in the boiler

a high water condition in the boiler

a high water level in the reciever

a time clock

The pump motor on a boiler feed pump is started when there is

A low water condition in the boiler

A high water condition in the boiler

A high water condition in the boiler feed pump reciever

A time clock

Water is usually supplied to the boilers that are installed in large commercial systems or to a system with a condensate return problem or to fire tube boilers by a:

Condensate receiver pump

Boiler feed pump

Boiler return trap

Gravity return feeder

The device that is used to regulate the discharge pressure of a condensate pump is a :

Check valve

Gate valve

Flow control valve

Plug cock

T or F

In a two pipe gravity return system you should trap return lines that are flowing to a condensate receiver. This is because a centrifugal pump is being used to return water to the boiler?

T or F

The water level in a boiler feed pump receiver is mechanically maintained?

T or F

A low water cutoff is installed in the condensate receiver in order to protect the boiler feed pump?

T or F

When a condensate or boiler feed pump is installed in a two pipe gravity return steam system a main vent is no longer needed?

In a vacuum steam heating system, the device that actuates the vacuum pump when there is a lose of vacuum in the return piping is the?

Pressuretrol

Aquastat

Vacuum Switch

Thermostat

In a vacuum steam heating system, the device which prevents a higher vacuum from forming in the supply piping than the return piping is a/an?

Pressure reducing valve

Balancing valve

Steam trap

Equalizing line

The device which is incorporated into a vacuum steam heating system to protect the vacuum pump from creating too low a vacuum is a?

Relief valve

Control line

Vacuum switch

Vacuum breaker

The device which can be used to elevate condensate in a vacuum steam heatin system is a

Steam trap

Vacuum breaker

Lift Fitting

Control line

In a vapor steam heating system, condensate is returned to the boiler by means of

A vacuum pump

A condensate reciever

A boiler feed pump

Gravity

What forces condensate out of the boiler return trap in a vapor steam heating system?

Boiler feed pump

Steam

Condensate reciever

Vacuum pump

What constitutes the division points between the supply and return piping in a vapor steam heating system?

Boiler return trap

Check Valves

Steam traps

Air Eliminators

Air is eliminated from a vapor steam heating system by a/an?

Standard air vent

Boiler return trap

Air eliminator

Main vent

T or F

In a vapor steam heating system, circulation is dependent upon a vacuum pump?

T or F

In order to eliminate air from a vapor steam heating system, standard vents should be installed?

T or F

Steam can be circulated at temperatures below 212F in a vapor steam heating systems?

T or F

When pressure in a vapor steam heating system is decreased, each pound of steam will occupy more space?

The device which is used to maintain a pressure differential between the supply and return piping in a sub atmospheric steam heatin system is a

Pressure controller

Vaporstat

Differential controler

Control valve

Air is eliminated from a sub atmospheric steam heating system by a/an?

Air vent

Air eliminator

Vacuum pump

Air scoop

The device which takes continuous readings of heating conditions in a sub atmospheric steam heating system and the amount of heat being supplied is a

Thermostat

Vapor

Control panel

Control valve

the device which controls the steam pressure on the steam supply side of a sub atmospheric steam heating system is a

Differential controller

Control valve

Heat balancer

Vacuum pump

T or F

In a sub atmospheric system there is never a pressure of less than one psig on the supply side of the system?

T or F

Thermodynamic steam traps are often used in sub atmospheric heating systems?

T or F

Is it possible to circulate 160F steam in teh supply piping in a variable bacuum steam heating system?

T or F

A sub atmospheric steam system is so called because the pressures on the supply side, as well as the return side of the system, are usually operating below atmospheric pressure?

T or F

Because a vacuum pump is used in a sub atmospheric steam heating system, supply and return piping need not be pitched?

T or F

Steam mains should be pitched in the direction of flow?

T or F

Reducing the pipe size in a horizontal steam main requires the use of a concentric reducer? 

FALSE

ECCENTRIC REDUCER!

T or F

Branch connections should always be connected to the bottom of a steam supply main?

T or F

Guides are not needed if a slip type expansion joint is installed in the steam piping?

T or F

A saddle is used to protect pipe insulation against damage caused by pipe movment?

T or F

Steam piping should be attached to supports (hangers, brackets, etc) in such a way that it cant move?

T or F

Unreamed system piping may cause water hammer?

T or F

When pipe is heated, its length and width are increased?

T or F

Steam mains, piping, etc...that are tied into a dry return must utilize a steam trap?

T or F

Swing joints should always be installed in a steam heting system in order to accommodate expansion of the piping?

T or F

Piping serving radiation units on teh second floor of a building may not be run on the ceiling of the floor below?

T or F

The supply connections to a heating element may be made at the bottom, top, or at the end of an inlet header?

T or F

Unit heaters designed for overhead use can be hung from the supply piping?

List the three basic types of low pressure steam boilers

C__t Ir_n

F__e T_b_

W__e_ T__e

Cast Iron

Fire Tube

Water tube

What are three major causes of low water in a steam boiler?

Ca__le___ or In_tt__tion

O___ Fi__g of Boi_e__

D__ect_ in a Sy____

Carelessness or inattention

Over firing of a boiler

Defects in a system

Name three general types of low water control devices according to action.

Aut____ic F__l C_to__

W__er M_ke U_

C__b_

Automatic Fuel Cutoff

Water Make up

Combo, fuel cutoff/water make up

On a boiler supplying process steam, where 100% of the condensate is not returned to the boiler, a seperate _____and a ______ should be used

B___er W___ Fe__

Se___ate  L__ Wa___ C_to__

Boiler water feed

Seperate low water cut off

T or F

Low water control devices using the float linkage system are the only type allowed to be used on steam boilers?

T or F

A steam flow line may NEVER be taken out of the steam equalizing pipe of a water column?

T or F

Water can be added to a boiler by use of an electric water feeder that can be added to the feeders low water cut off?

T or F

A condensate pump and receiver are used to accumulate returned condensate and pump it to the boiler?

T or F

If to or more boilers are installed in a single system it is necessary to install a mechanical means to maintain proper water lines in each boiler?

T or F

A mechanical water feeder must be installed on a boiler that is supplied by a boiler feed pump?