API 1169 – PIPELINE CONSTRUCTION INSPECTION
AND TESTING QUESTIONS AND VERIFIED
ANSWERS RECENTLY UPDATED
300 QUESTIONS AND ANSWERS
1. Which of the following equipment may NOT be required for a pressure
test? ANSWER: Internal line up clamps
2. Before testing begins, a _____________ with explanatory notes and data
should be prepared. ANSWER: Pressure test procedure
3. The pressure testing of newly constructed liquid pipelines and replaced
segments of existing pipelines should be performed in accordance with:
ANSWER: ASME, Code of Federal Regulations and any other applicable
governmental regulations
4. Before the actual line filling operation, it is advisable to run a ___________
in an effort to identify geometric abnormalities that may exist in the line
prior to the test. ANSWER: Sizing pig, caliper or deformation tool
5. What is the minimum test pressure for liquid pipelines according to API
1169? ANSWER: 1.25 times the maximum allowable operating pressure
(MAOP)
6. How long should the test pressure be maintained during a hydrostatic
test? ANSWER: Minimum of 4 hours for liquid pipelines
7. What type of fluid is typically used for hydrostatic testing of liquid
pipelines? ANSWER: Water
8. Before pressure testing, the pipeline should be filled with test medium at a
rate not exceeding: ANSWER: The rate that allows proper air evacuation
,9. During filling operations, air should be removed from: ANSWER: All high
points in the pipeline
10. What is the acceptable pressure drop during the test period? ANSWER:
No pressure drop is acceptable except for temperature compensation
11. Temperature compensation calculations should account for: ANSWER:
Ambient temperature changes during the test period
12. The test pressure should be increased gradually at a rate not exceeding:
ANSWER: 100 psi per minute
13. What equipment is used to measure pressure during testing? ANSWER:
Calibrated pressure gauges or transducers
14. How many pressure measuring devices are typically required for a
pressure test? ANSWER: Minimum of two independent devices
15. What is the accuracy requirement for pressure measuring equipment?
ANSWER: ±0.5% of full scale or better
16. Before beginning the pressure test, all _____________ should be
removed from the test section. ANSWER: Air and gases
17. The test section should be isolated using: ANSWER: Appropriate closure
methods such as blind flanges or plugs
18. What should be done if the test pressure cannot be maintained?
ANSWER: Locate and repair the leak, then retest
19. During the test, personnel should: ANSWER: Remain at a safe distance
from the test section
20. Test records should include: ANSWER: Pressure readings, temperature,
time, and weather conditions
21. What is the maximum allowable operating pressure (MAOP) based on?
ANSWER: Design pressure considering all applicable factors
22. The test medium temperature should be monitored because: ANSWER:
Temperature changes affect pressure readings
23. What type of pigging should be performed before pressure testing?
ANSWER: Cleaning and sizing/caliper pigging
, 24. The pipeline should be filled from the _____________ elevation.
ANSWER: Lowest
25. Air release valves should be installed at: ANSWER: All high points in the
test section
26. What is the purpose of a pre-test inspection? ANSWER: To verify pipeline
integrity and readiness for testing
27. Test boundaries should be clearly: ANSWER: Defined and marked
28. The test section length is typically limited by: ANSWER: Elevation changes
and operational considerations
29. What documentation is required before testing? ANSWER: Approved test
procedure and safety plan
30. During pressure testing, what should be monitored continuously?
ANSWER: Pressure, temperature, and visual observations
31. The test is considered successful when: ANSWER: Pressure is maintained
for the specified duration without leakage
32. What happens if a leak is discovered during testing? ANSWER: Test is
stopped, pressure relieved, leak repaired, and test repeated
33. Test pressure should be measured at the: ANSWER: Highest elevation
point in the test section
34. What is the purpose of temperature monitoring during testing? ANSWER:
To compensate for thermal expansion/contraction effects
35. The test medium should be: ANSWER: Compatible with the pipeline
material and transported product
36. What safety precautions are required during pressure testing? ANSWER:
Evacuation of personnel, barriers, and emergency procedures
37. Test equipment should be calibrated: ANSWER: Before each test or as
specified in the procedure
38. The minimum wall thickness for the test section should be: ANSWER: As
specified in the design calculations
39. What is the purpose of a strength test? ANSWER: To verify the pipeline
can withstand the test pressure
AND TESTING QUESTIONS AND VERIFIED
ANSWERS RECENTLY UPDATED
300 QUESTIONS AND ANSWERS
1. Which of the following equipment may NOT be required for a pressure
test? ANSWER: Internal line up clamps
2. Before testing begins, a _____________ with explanatory notes and data
should be prepared. ANSWER: Pressure test procedure
3. The pressure testing of newly constructed liquid pipelines and replaced
segments of existing pipelines should be performed in accordance with:
ANSWER: ASME, Code of Federal Regulations and any other applicable
governmental regulations
4. Before the actual line filling operation, it is advisable to run a ___________
in an effort to identify geometric abnormalities that may exist in the line
prior to the test. ANSWER: Sizing pig, caliper or deformation tool
5. What is the minimum test pressure for liquid pipelines according to API
1169? ANSWER: 1.25 times the maximum allowable operating pressure
(MAOP)
6. How long should the test pressure be maintained during a hydrostatic
test? ANSWER: Minimum of 4 hours for liquid pipelines
7. What type of fluid is typically used for hydrostatic testing of liquid
pipelines? ANSWER: Water
8. Before pressure testing, the pipeline should be filled with test medium at a
rate not exceeding: ANSWER: The rate that allows proper air evacuation
,9. During filling operations, air should be removed from: ANSWER: All high
points in the pipeline
10. What is the acceptable pressure drop during the test period? ANSWER:
No pressure drop is acceptable except for temperature compensation
11. Temperature compensation calculations should account for: ANSWER:
Ambient temperature changes during the test period
12. The test pressure should be increased gradually at a rate not exceeding:
ANSWER: 100 psi per minute
13. What equipment is used to measure pressure during testing? ANSWER:
Calibrated pressure gauges or transducers
14. How many pressure measuring devices are typically required for a
pressure test? ANSWER: Minimum of two independent devices
15. What is the accuracy requirement for pressure measuring equipment?
ANSWER: ±0.5% of full scale or better
16. Before beginning the pressure test, all _____________ should be
removed from the test section. ANSWER: Air and gases
17. The test section should be isolated using: ANSWER: Appropriate closure
methods such as blind flanges or plugs
18. What should be done if the test pressure cannot be maintained?
ANSWER: Locate and repair the leak, then retest
19. During the test, personnel should: ANSWER: Remain at a safe distance
from the test section
20. Test records should include: ANSWER: Pressure readings, temperature,
time, and weather conditions
21. What is the maximum allowable operating pressure (MAOP) based on?
ANSWER: Design pressure considering all applicable factors
22. The test medium temperature should be monitored because: ANSWER:
Temperature changes affect pressure readings
23. What type of pigging should be performed before pressure testing?
ANSWER: Cleaning and sizing/caliper pigging
, 24. The pipeline should be filled from the _____________ elevation.
ANSWER: Lowest
25. Air release valves should be installed at: ANSWER: All high points in the
test section
26. What is the purpose of a pre-test inspection? ANSWER: To verify pipeline
integrity and readiness for testing
27. Test boundaries should be clearly: ANSWER: Defined and marked
28. The test section length is typically limited by: ANSWER: Elevation changes
and operational considerations
29. What documentation is required before testing? ANSWER: Approved test
procedure and safety plan
30. During pressure testing, what should be monitored continuously?
ANSWER: Pressure, temperature, and visual observations
31. The test is considered successful when: ANSWER: Pressure is maintained
for the specified duration without leakage
32. What happens if a leak is discovered during testing? ANSWER: Test is
stopped, pressure relieved, leak repaired, and test repeated
33. Test pressure should be measured at the: ANSWER: Highest elevation
point in the test section
34. What is the purpose of temperature monitoring during testing? ANSWER:
To compensate for thermal expansion/contraction effects
35. The test medium should be: ANSWER: Compatible with the pipeline
material and transported product
36. What safety precautions are required during pressure testing? ANSWER:
Evacuation of personnel, barriers, and emergency procedures
37. Test equipment should be calibrated: ANSWER: Before each test or as
specified in the procedure
38. The minimum wall thickness for the test section should be: ANSWER: As
specified in the design calculations
39. What is the purpose of a strength test? ANSWER: To verify the pipeline
can withstand the test pressure
