1|Page
CSA Z662 Oil and Gas Pipeline Systems Exam
Practice Questions And Correct Answers||Verified
Exam!! (Verified Answers) Plus Rationale 2026/2027
Q&A| Instant Download Pdf
1. The code applies to crude oil transportation and
refineries ? - Answer-False: 1.3.d
2. A pipeline that convey gas from a wellhead assembly to
a treatment plant, transmission line, distribution line or
service line. - Answer-section 2: Line, gathering
3. This standard does not apply to the metal piping under
operation of -29 celcius ? - Answer-False: 1.3.a
4. The transportation, installation, and any repair of pipe
shall not reduce the wall thickness at any point
to less than 90% of the design wall thickness, determined
as specified in Clause 4.3.5, for the design
pressure of the pipe. - Answer-True: 6.1.3
,2|Page
5. what does it mean of permafrost ? - Answer-the thermal
condition in soil or rock at temperatures below 0 °C
persisting over at least
two consecutive winters and the intervening summer,
whether or not moisture in the form of water or
ground ice is present. Permafrost may also consider
permanent frost
6. A pipeline system conveying hydrocarbons or
hydrocarbon mixtures in the liquid or quasi-liquid state with
a vapour pressure greater than 110 kPa
absolute at 38 °C; consider
a. HVP
b. MVP
c. LVP
d. HQLP - Answer-a. HVP : Section 2. Definition
7. Joining two pipes with internal diameters unequal,
which one of the statement is true?
a) Where the nominal internal offset is 2.4 mm or less, no
special treatment is necessary, provided that full
,3|Page
penetration and bond is accomplished in welding
b) Where the nominal internal offset is more than 2.4 mm
and there is no access to the inside of the piping
for welding, the transition shall be made with a taper on
the inside end of the thicker item
c) both a and b
d) none of the above - Answer-Fig 7.2 Answer c
8. Where the specified minimum yield strengths of the
items to be joined are unequal,
The tensile strength of the deposited weld metal shall be
at least equal to that of the item having the higher
specified minimum yield strength.
True or False - Answer-Fig.7.2 notes 5.a TRUE
9. The stress in the wall of a pipe or component that is
produced by the pressure of the fluid in the piping, any
, 4|Page
external hydrostatic pressure, or both, and that acts in the
circumferential direction.
a. Design
b. Internal
c. Hoop
d. Longitudinal - Answer-Definition: Hoop Stress
10. Plain dents that are deeper than 6 mm for pipe 101.6
mm OD or smaller shall be:
a. repaired immediately
b. removed by cutting out the affected portion of pipe as a
cylinder
c. approved by the engineer
d. pounded out to the flat position - Answer-Sect 6.3.3.2
and 6.3.3.4: Answer b
11. How long is the Visual inspection records shall be kept
?
a. 5 years
b. indefinitely
c. until the piping is abandoned
CSA Z662 Oil and Gas Pipeline Systems Exam
Practice Questions And Correct Answers||Verified
Exam!! (Verified Answers) Plus Rationale 2026/2027
Q&A| Instant Download Pdf
1. The code applies to crude oil transportation and
refineries ? - Answer-False: 1.3.d
2. A pipeline that convey gas from a wellhead assembly to
a treatment plant, transmission line, distribution line or
service line. - Answer-section 2: Line, gathering
3. This standard does not apply to the metal piping under
operation of -29 celcius ? - Answer-False: 1.3.a
4. The transportation, installation, and any repair of pipe
shall not reduce the wall thickness at any point
to less than 90% of the design wall thickness, determined
as specified in Clause 4.3.5, for the design
pressure of the pipe. - Answer-True: 6.1.3
,2|Page
5. what does it mean of permafrost ? - Answer-the thermal
condition in soil or rock at temperatures below 0 °C
persisting over at least
two consecutive winters and the intervening summer,
whether or not moisture in the form of water or
ground ice is present. Permafrost may also consider
permanent frost
6. A pipeline system conveying hydrocarbons or
hydrocarbon mixtures in the liquid or quasi-liquid state with
a vapour pressure greater than 110 kPa
absolute at 38 °C; consider
a. HVP
b. MVP
c. LVP
d. HQLP - Answer-a. HVP : Section 2. Definition
7. Joining two pipes with internal diameters unequal,
which one of the statement is true?
a) Where the nominal internal offset is 2.4 mm or less, no
special treatment is necessary, provided that full
,3|Page
penetration and bond is accomplished in welding
b) Where the nominal internal offset is more than 2.4 mm
and there is no access to the inside of the piping
for welding, the transition shall be made with a taper on
the inside end of the thicker item
c) both a and b
d) none of the above - Answer-Fig 7.2 Answer c
8. Where the specified minimum yield strengths of the
items to be joined are unequal,
The tensile strength of the deposited weld metal shall be
at least equal to that of the item having the higher
specified minimum yield strength.
True or False - Answer-Fig.7.2 notes 5.a TRUE
9. The stress in the wall of a pipe or component that is
produced by the pressure of the fluid in the piping, any
, 4|Page
external hydrostatic pressure, or both, and that acts in the
circumferential direction.
a. Design
b. Internal
c. Hoop
d. Longitudinal - Answer-Definition: Hoop Stress
10. Plain dents that are deeper than 6 mm for pipe 101.6
mm OD or smaller shall be:
a. repaired immediately
b. removed by cutting out the affected portion of pipe as a
cylinder
c. approved by the engineer
d. pounded out to the flat position - Answer-Sect 6.3.3.2
and 6.3.3.4: Answer b
11. How long is the Visual inspection records shall be kept
?
a. 5 years
b. indefinitely
c. until the piping is abandoned
