Steam Plant Assistant Practice Exam 1
Of the following, the foil which contains all the tools necessary to properly install a screwed fitting
into an existing continuous steam main is... ✔✔ correct answer Hacksaw, ratchet wrench die, stillson
wrench, rule
The MINIMUM diameter of pipe that may be used for gas piping in the city is... ✔✔ correct answer
3/8"
A tee fitting that has the branch larger than the run is GENERALLY called a ___ tee. ✔✔ correct
answer Bull head
The proper type of fitting to use in a horizontal hot water heating main, when changing pipe size, is
generally known as a(n)... ✔✔ correct answer Eccentric reducer
Pitch elbows are elbows having... ✔✔ correct answer Special provisions for drainage
Of the following types of pipe material, the one which will expand the LEAST when heated is... ✔✔
correct answer Cast iron
By which series of dimensions is the cross-fitting shown below BEST described?
_______2 1/4"
2 1/2" ___| |___ 1 1/4"
|____ ____|
|______|
1 1/2" ✔✔ correct answer 2 1/2 x 1 1/4 x 2 1/4 x 1 1/2
If the circumference of a circle is equal to 31.416 inches, then its diameter, in inches, is equal to
MOST NEARLY... ✔✔ correct answer 10
Fittings in a fire standpipe system in the city MUST be made of... ✔✔ correct answer Malleable cast
iron
If the outside diameter of a pipe is 14 inches and the wall thickness is 1/2 inch, then the inside area
of the pipe, in square inches, is MOST NEARLY... ✔✔ correct answer 133
, Steam Plant Assistant Practice Exam 1
Pipe having a schedule number of 40 corresponds MOST NEARLY to ____ pipe. ✔✔ correct answer
Standard
For which one of the following temperature ranges should a steam fitter use a valve that is
designated as 125 OWC? ✔✔ correct answer 30-100 degrees F
A packed dimension joint is USUALLY installed on a ____ line. ✔✔ correct answer Medium pressure
steam
Of the following types of pipe, the one that is USUALLY used for general plant applications in the low
and medium steam pressure range is... ✔✔ correct answer Wrought iron
With reference to making up steam lines, flange fittings are GENERALLY used for pipe diameters of
NOT LESS THAN... ✔✔ correct answer 4"
Of the following kinds of wedges used in gate valves, the one that is MOST generally used for steam
service is the ___ type. ✔✔ correct answer Solid
Of the following valve trim symbols, the one which designates a valve trim made of monel material
is... ✔✔ correct answer NI CU
Of the following devices used in steam heating systems, the one that is NOT used to trap or hold
steam is the ___ trap. ✔✔ correct answer Boiler return
The type of gasket material that is GENERALLY used between pipe flanges on a superheated steam
line is... ✔✔ correct answer Monel and copper
The recommended depth of dirt pockets used on steam heating systems (not including unit heaters)
having thermostatic traps is USUALLY ____ deep. ✔✔ correct answer 10"
Of the following types of valves, the one which is generally used where extremely close regulation of
flow is required is the ___ valve. ✔✔ correct answer Needle
In general, non-rising steam gate valves are BEST adaptable for... ✔✔ correct answer Places where
space is a factor
Of the following, the foil which contains all the tools necessary to properly install a screwed fitting
into an existing continuous steam main is... ✔✔ correct answer Hacksaw, ratchet wrench die, stillson
wrench, rule
The MINIMUM diameter of pipe that may be used for gas piping in the city is... ✔✔ correct answer
3/8"
A tee fitting that has the branch larger than the run is GENERALLY called a ___ tee. ✔✔ correct
answer Bull head
The proper type of fitting to use in a horizontal hot water heating main, when changing pipe size, is
generally known as a(n)... ✔✔ correct answer Eccentric reducer
Pitch elbows are elbows having... ✔✔ correct answer Special provisions for drainage
Of the following types of pipe material, the one which will expand the LEAST when heated is... ✔✔
correct answer Cast iron
By which series of dimensions is the cross-fitting shown below BEST described?
_______2 1/4"
2 1/2" ___| |___ 1 1/4"
|____ ____|
|______|
1 1/2" ✔✔ correct answer 2 1/2 x 1 1/4 x 2 1/4 x 1 1/2
If the circumference of a circle is equal to 31.416 inches, then its diameter, in inches, is equal to
MOST NEARLY... ✔✔ correct answer 10
Fittings in a fire standpipe system in the city MUST be made of... ✔✔ correct answer Malleable cast
iron
If the outside diameter of a pipe is 14 inches and the wall thickness is 1/2 inch, then the inside area
of the pipe, in square inches, is MOST NEARLY... ✔✔ correct answer 133
, Steam Plant Assistant Practice Exam 1
Pipe having a schedule number of 40 corresponds MOST NEARLY to ____ pipe. ✔✔ correct answer
Standard
For which one of the following temperature ranges should a steam fitter use a valve that is
designated as 125 OWC? ✔✔ correct answer 30-100 degrees F
A packed dimension joint is USUALLY installed on a ____ line. ✔✔ correct answer Medium pressure
steam
Of the following types of pipe, the one that is USUALLY used for general plant applications in the low
and medium steam pressure range is... ✔✔ correct answer Wrought iron
With reference to making up steam lines, flange fittings are GENERALLY used for pipe diameters of
NOT LESS THAN... ✔✔ correct answer 4"
Of the following kinds of wedges used in gate valves, the one that is MOST generally used for steam
service is the ___ type. ✔✔ correct answer Solid
Of the following valve trim symbols, the one which designates a valve trim made of monel material
is... ✔✔ correct answer NI CU
Of the following devices used in steam heating systems, the one that is NOT used to trap or hold
steam is the ___ trap. ✔✔ correct answer Boiler return
The type of gasket material that is GENERALLY used between pipe flanges on a superheated steam
line is... ✔✔ correct answer Monel and copper
The recommended depth of dirt pockets used on steam heating systems (not including unit heaters)
having thermostatic traps is USUALLY ____ deep. ✔✔ correct answer 10"
Of the following types of valves, the one which is generally used where extremely close regulation of
flow is required is the ___ valve. ✔✔ correct answer Needle
In general, non-rising steam gate valves are BEST adaptable for... ✔✔ correct answer Places where
space is a factor
