chapter 16 Flashcards
Never paint the exterior canvas or linen sizing over pipe insulation
True False
false
The expansion bend method of accommodating piping expansion and contraction is preferred for:
a)Pneumatic installations
b)Hot water installations
c)Low pressure installations
d)High pressure installations
d
The coefficient of thermal conductivity (k) of a material is:
a)A measure of the amount of heat that will be transmitted through it
b)A high value for a good insulating material
c)Is a measurement of a material’s resistance to heat flow
d)No longer used in thermal design
a
The allowance for expansion and contraction of a piping systems is necessary because
a)the piping system requires corrosion allowance
b)the piping system must be able to accommodate design changes
c)the piping material is subjected to temperature changes
d)The piping material is covered by insulation
c)
Considering pipe expansion methods, compare the expansion bend method with expansion joints:
a)expansion bends have higher friction losses over a lifetime of service
b)expansion bends are higher maintenance
c)expansion bends require regular re-packing
d)Expansion bends are limited to lower temperatures
a
Piping support systems must both prevent excessive pipeline sagging and:
a)Anchor piping rigidly
b)Resist vertical movement
c)Allow free movement
d)Resist piping temperature change
c
Piping support requirements are prescribed by an ASME code
True False
true
One advantage of a bellows-type corrugated expansion joint over a slip-type expansion joint:
a)Requires only packing
b)Does not require packing
c)Allows for more movement
d)Requires less space
b
Slip expansion joints:
a)Must be installed in pairs
b)Must be packed and lubricated
c)Must be lubricated only
d)Are maintenance free
b
The corrugated bellows expansion joint
a)Requires the most installation space, compared to other expansion joint styles
b)Requires the least amount of maintenance, compared to other expansion joint styles
c)Accommodates the most amount of movement, compared to other expansion joint styles
d)Can be used with in the highest temperature/pressure applications, compared with other expansion joint styles
b
if only one expansion joint is used on the pipeline, it should be placed in the
a. end of the line
b. middle of the line
c. beggining of the line
d. line adjacent to the isolation valve
b
vertical adjustment of a roller stand may be obtained by means of ___________ adjustment bolts that raise or lower the roller upoen which the pipe rests
a. four
b. five
c. three
d. two
a
which of the following is not a characteristic of materials suitable for use as insulation
a. long life
b. vermin proof
c. low insulating valve
d. ability to retain its shape and insulating value when wet
c
what is the temp limit of refractory fibre insulation
a. 1000c
b. 1200c
c. 2250c
d. 1650c
d
The bellows type corrugated expansion joint is suitable for pressures up to:
A.500 kPa (73 psi)
B.2000 kPa (290 psi)
C.100 kPa (15 psi)
D.1500 kPa (217 psi)
E.1000 kPa (145 psi)
b
