NACE CP2 STUDENT MANUAL CHAPTER 4: ROAD AND
RAILROAD CASINGS EXAM QUESTIONS AND ANSWERS WITH
COMPLETE SOLUTIONS VERIFIED
Casings under roads and railroads serve to:
I: Remove stress on the carrier pipe (pipe from external loads on the road bed
above
II: Leaks, should they occur, would go to the side vents and not destroy the road
bed
III: Pipe replacement could be made without damaging the road bed
A: I
B: II
C: III
D: I, II, III
D
True or False:
Casings are a simple construction that is easy to control corrosion.
f
, What are the possible environments that may exist in the annular space between
the casing and the pipe?
I: Atmospheric (usually moist)
II: Partially atmospheric and otherwise immersed (may be top vs. bottom or if the
pipe is not horizontal, one end vs. another)
III: Totally immersed
A: I
B: II
C: III
D: I, II, III
d
True or False:
If the coating is damaged under the spacer or the seal, this location could be a
candidate for an oxygen concentration corrosion cell.
t
True or False:
All casings have vents.
f
RAILROAD CASINGS EXAM QUESTIONS AND ANSWERS WITH
COMPLETE SOLUTIONS VERIFIED
Casings under roads and railroads serve to:
I: Remove stress on the carrier pipe (pipe from external loads on the road bed
above
II: Leaks, should they occur, would go to the side vents and not destroy the road
bed
III: Pipe replacement could be made without damaging the road bed
A: I
B: II
C: III
D: I, II, III
D
True or False:
Casings are a simple construction that is easy to control corrosion.
f
, What are the possible environments that may exist in the annular space between
the casing and the pipe?
I: Atmospheric (usually moist)
II: Partially atmospheric and otherwise immersed (may be top vs. bottom or if the
pipe is not horizontal, one end vs. another)
III: Totally immersed
A: I
B: II
C: III
D: I, II, III
d
True or False:
If the coating is damaged under the spacer or the seal, this location could be a
candidate for an oxygen concentration corrosion cell.
t
True or False:
All casings have vents.
f
