1. Q: What is the primary purpose of pipeline safety regulations?
ANSWER To protect public safety, prevent environmental damage, and ensure
the safe transportation of hazardous materials through pipelines.
2. Q: What does OSHA stand for? ANSWER Occupational Safety and
Health Administration.
3. Q: What is the minimum burial depth for pipelines in South Carolina
under normal conditions? ANSWER Typically 36 inches (3 feet) in normal
soil, though this can vary based on specific regulations and conditions.
4. Q: What is a "one-call" system? ANSWER A notification system that
must be contacted before excavation to locate and mark underground utilities,
including pipelines. In South Carolina, this is SC811.
5. Q: How many hours before excavation must you contact SC811?
ANSWER At least 3 full business days (but not more than 10 business days)
before beginning excavation.
6. Q: What color marking is used for petroleum pipelines? ANSWER
Yellow.
7. Q: What color marking is used for natural gas pipelines? ANSWER
Yellow.
8. Q: What does PPE stand for? ANSWER Personal Protective Equipment.
9. Q: Name three essential PPE items for pipeline workers. ANSWER
Hard hat, safety glasses, steel-toed boots, high-visibility vest, and gloves.
10. Q: What is the purpose of a pipeline marker? ANSWER To indicate the
approximate location of a buried pipeline and provide emergency contact
information.
11. Q: What is PHMSA? ANSWER Pipeline and Hazardous Materials Safety
Administration, a federal agency under the Department of Transportation.
,12. Q: What is a High Consequence Area (HCA)? ANSWER An area where
a pipeline failure could have significant impact on people or the environment,
such as populated areas or water sources.
13. Q: What is the purpose of cathodic protection? ANSWER To prevent
corrosion of metallic pipelines by making the pipeline the cathode in an
electrochemical cell.
14. Q: What are the two main types of cathodic protection? ANSWER
Impressed current and sacrificial anode systems.
15. Q: What is MAOP? ANSWER Maximum Allowable Operating Pressure
- the maximum pressure at which a pipeline system may be operated.
16. Q: What is a pig in pipeline terminology? ANSWER A device inserted
into and moved through a pipeline for cleaning, inspection, or other
maintenance purposes (Pipeline Inspection Gauge).
17. Q: What is the purpose of pipeline pigging? ANSWER To clean the
pipeline, inspect for defects, measure the pipeline, or separate different
products.
18. Q: What is a right-of-way (ROW)? ANSWER A strip of land where a
pipeline is located and the operator has legal rights for access, maintenance, and
operation.
19. Q: What is the typical width of a pipeline right-of-way? ANSWER
Generally 50 to 100 feet, though this varies based on pipe size and specific
requirements.
20. Q: What is a pressure test? ANSWER A test performed on a pipeline to
verify its integrity by subjecting it to pressures higher than normal operating
pressure.
21. Q: What is hydrostatic testing? ANSWER A pressure test using water or
another liquid to test pipeline integrity.
22. Q: What percentage of MAOP is typically used for hydrostatic testing?
ANSWER Usually 125% to 150% of MAOP, depending on the class location
and code requirements.
23. Q: What is a gas leak survey? ANSWER A systematic inspection of a
gas pipeline system to detect leaks using specialized equipment.
24. Q: What instrument is commonly used to detect gas leaks? ANSWER
Combustible gas indicator (CGI) or flame ionization detector (FID).
,25. Q: What is corrosion? ANSWER The gradual destruction of metal by
chemical or electrochemical reaction with its environment.
26. Q: What is external corrosion? ANSWER Corrosion that occurs on the
outside surface of a pipeline, typically due to soil conditions or atmospheric
exposure.
27. Q: What is internal corrosion? ANSWER Corrosion occurring on the
inside of a pipeline, often caused by the product being transported or
contaminants.
28. Q: What is a valve? ANSWER A device used to control the flow of
product through a pipeline by opening, closing, or partially obstructing
passageways.
29. Q: What is a block valve? ANSWER A valve used to isolate sections of
pipeline for maintenance or in case of emergency.
30. Q: What is an emergency shutdown valve (ESV)? ANSWER A valve
designed to quickly shut off flow in emergency situations, often remotely
operated.
31. Q: What is a regulator station? ANSWER A facility that reduces and
controls the pressure of gas flowing through a pipeline system.
32. Q: What is a compressor station? ANSWER A facility that increases the
pressure of gas to maintain flow through a pipeline system.
33. Q: What is pipeline integrity management? ANSWER A systematic
approach to assessing and mitigating risks to pipeline safety and reliability.
34. Q: What does ILI stand for in pipeline operations? ANSWER In-Line
Inspection, using smart pigs to inspect pipeline condition from the inside.
35. Q: What is a thrust restraint? ANSWER A device or structure designed
to resist forces that could cause pipeline movement at bends, tees, or other
fittings.
36. Q: What is backfill? ANSWER Material used to refill an excavation after
pipeline installation.
37. Q: What is bedding in pipeline installation? ANSWER Material placed
in the bottom of a trench to provide uniform support for the pipeline.
38. Q: What is a hot tap? ANSWER A procedure for making a connection to
an operating pipeline under pressure.
, 39. Q: What is a cold tap? ANSWER A connection made to a pipeline that is
not in service or under pressure.
40. Q: What is welding procedure specification (WPS)? ANSWER A
written document that provides direction to the welder for making production
welds to code requirements.
41. Q: What does NDT stand for? ANSWER Non-Destructive Testing -
methods of inspecting welds and materials without damaging them.
42. Q: Name three types of NDT. ANSWER Radiographic testing (X-ray),
ultrasonic testing, and magnetic particle testing.
43. Q: What is a confined space? ANSWER A space large enough for entry,
with limited means of entry/exit, not designed for continuous occupancy, and
may contain hazards.
44. Q: What is required before entering a confined space? ANSWER A
confined space entry permit, atmospheric testing, proper ventilation, and trained
attendant.
45. Q: What is LEL? ANSWER Lower Explosive Limit - the minimum
concentration of gas or vapor that will ignite.
46. Q: What is the safe LEL percentage for entry into a confined space?
ANSWER Generally less than 10% of the LEL.
47. Q: What minimum oxygen level is required for safe confined space
entry? ANSWER 19.5% oxygen by volume.
48. Q: What is the maximum safe oxygen level for confined space entry?
ANSWER 23.5% oxygen by volume.
49. Q: What is H2S? ANSWER Hydrogen sulfide, a toxic and flammable gas
that may be present in some pipeline products or environments.
50. Q: What are the dangers of H2S? ANSWER Highly toxic even at low
concentrations, flammable, corrosive, and can cause rapid unconsciousness and
death.
Section 2: Pipeline Materials and Construction (Questions 51-100)
51. Q: What is the most common material for modern pipelines? ANSWER
Carbon steel.
52. Q: What does API stand for in pipeline standards? ANSWER
American Petroleum Institute.
ANSWER To protect public safety, prevent environmental damage, and ensure
the safe transportation of hazardous materials through pipelines.
2. Q: What does OSHA stand for? ANSWER Occupational Safety and
Health Administration.
3. Q: What is the minimum burial depth for pipelines in South Carolina
under normal conditions? ANSWER Typically 36 inches (3 feet) in normal
soil, though this can vary based on specific regulations and conditions.
4. Q: What is a "one-call" system? ANSWER A notification system that
must be contacted before excavation to locate and mark underground utilities,
including pipelines. In South Carolina, this is SC811.
5. Q: How many hours before excavation must you contact SC811?
ANSWER At least 3 full business days (but not more than 10 business days)
before beginning excavation.
6. Q: What color marking is used for petroleum pipelines? ANSWER
Yellow.
7. Q: What color marking is used for natural gas pipelines? ANSWER
Yellow.
8. Q: What does PPE stand for? ANSWER Personal Protective Equipment.
9. Q: Name three essential PPE items for pipeline workers. ANSWER
Hard hat, safety glasses, steel-toed boots, high-visibility vest, and gloves.
10. Q: What is the purpose of a pipeline marker? ANSWER To indicate the
approximate location of a buried pipeline and provide emergency contact
information.
11. Q: What is PHMSA? ANSWER Pipeline and Hazardous Materials Safety
Administration, a federal agency under the Department of Transportation.
,12. Q: What is a High Consequence Area (HCA)? ANSWER An area where
a pipeline failure could have significant impact on people or the environment,
such as populated areas or water sources.
13. Q: What is the purpose of cathodic protection? ANSWER To prevent
corrosion of metallic pipelines by making the pipeline the cathode in an
electrochemical cell.
14. Q: What are the two main types of cathodic protection? ANSWER
Impressed current and sacrificial anode systems.
15. Q: What is MAOP? ANSWER Maximum Allowable Operating Pressure
- the maximum pressure at which a pipeline system may be operated.
16. Q: What is a pig in pipeline terminology? ANSWER A device inserted
into and moved through a pipeline for cleaning, inspection, or other
maintenance purposes (Pipeline Inspection Gauge).
17. Q: What is the purpose of pipeline pigging? ANSWER To clean the
pipeline, inspect for defects, measure the pipeline, or separate different
products.
18. Q: What is a right-of-way (ROW)? ANSWER A strip of land where a
pipeline is located and the operator has legal rights for access, maintenance, and
operation.
19. Q: What is the typical width of a pipeline right-of-way? ANSWER
Generally 50 to 100 feet, though this varies based on pipe size and specific
requirements.
20. Q: What is a pressure test? ANSWER A test performed on a pipeline to
verify its integrity by subjecting it to pressures higher than normal operating
pressure.
21. Q: What is hydrostatic testing? ANSWER A pressure test using water or
another liquid to test pipeline integrity.
22. Q: What percentage of MAOP is typically used for hydrostatic testing?
ANSWER Usually 125% to 150% of MAOP, depending on the class location
and code requirements.
23. Q: What is a gas leak survey? ANSWER A systematic inspection of a
gas pipeline system to detect leaks using specialized equipment.
24. Q: What instrument is commonly used to detect gas leaks? ANSWER
Combustible gas indicator (CGI) or flame ionization detector (FID).
,25. Q: What is corrosion? ANSWER The gradual destruction of metal by
chemical or electrochemical reaction with its environment.
26. Q: What is external corrosion? ANSWER Corrosion that occurs on the
outside surface of a pipeline, typically due to soil conditions or atmospheric
exposure.
27. Q: What is internal corrosion? ANSWER Corrosion occurring on the
inside of a pipeline, often caused by the product being transported or
contaminants.
28. Q: What is a valve? ANSWER A device used to control the flow of
product through a pipeline by opening, closing, or partially obstructing
passageways.
29. Q: What is a block valve? ANSWER A valve used to isolate sections of
pipeline for maintenance or in case of emergency.
30. Q: What is an emergency shutdown valve (ESV)? ANSWER A valve
designed to quickly shut off flow in emergency situations, often remotely
operated.
31. Q: What is a regulator station? ANSWER A facility that reduces and
controls the pressure of gas flowing through a pipeline system.
32. Q: What is a compressor station? ANSWER A facility that increases the
pressure of gas to maintain flow through a pipeline system.
33. Q: What is pipeline integrity management? ANSWER A systematic
approach to assessing and mitigating risks to pipeline safety and reliability.
34. Q: What does ILI stand for in pipeline operations? ANSWER In-Line
Inspection, using smart pigs to inspect pipeline condition from the inside.
35. Q: What is a thrust restraint? ANSWER A device or structure designed
to resist forces that could cause pipeline movement at bends, tees, or other
fittings.
36. Q: What is backfill? ANSWER Material used to refill an excavation after
pipeline installation.
37. Q: What is bedding in pipeline installation? ANSWER Material placed
in the bottom of a trench to provide uniform support for the pipeline.
38. Q: What is a hot tap? ANSWER A procedure for making a connection to
an operating pipeline under pressure.
, 39. Q: What is a cold tap? ANSWER A connection made to a pipeline that is
not in service or under pressure.
40. Q: What is welding procedure specification (WPS)? ANSWER A
written document that provides direction to the welder for making production
welds to code requirements.
41. Q: What does NDT stand for? ANSWER Non-Destructive Testing -
methods of inspecting welds and materials without damaging them.
42. Q: Name three types of NDT. ANSWER Radiographic testing (X-ray),
ultrasonic testing, and magnetic particle testing.
43. Q: What is a confined space? ANSWER A space large enough for entry,
with limited means of entry/exit, not designed for continuous occupancy, and
may contain hazards.
44. Q: What is required before entering a confined space? ANSWER A
confined space entry permit, atmospheric testing, proper ventilation, and trained
attendant.
45. Q: What is LEL? ANSWER Lower Explosive Limit - the minimum
concentration of gas or vapor that will ignite.
46. Q: What is the safe LEL percentage for entry into a confined space?
ANSWER Generally less than 10% of the LEL.
47. Q: What minimum oxygen level is required for safe confined space
entry? ANSWER 19.5% oxygen by volume.
48. Q: What is the maximum safe oxygen level for confined space entry?
ANSWER 23.5% oxygen by volume.
49. Q: What is H2S? ANSWER Hydrogen sulfide, a toxic and flammable gas
that may be present in some pipeline products or environments.
50. Q: What are the dangers of H2S? ANSWER Highly toxic even at low
concentrations, flammable, corrosive, and can cause rapid unconsciousness and
death.
Section 2: Pipeline Materials and Construction (Questions 51-100)
51. Q: What is the most common material for modern pipelines? ANSWER
Carbon steel.
52. Q: What does API stand for in pipeline standards? ANSWER
American Petroleum Institute.
