API 570 EXPECTED QUESTIONS WITH VERIFIED
ANSWERS
Question 1.
What does API 579 section 4 cover?
ANSWER
General metal loss
Question 2.
What does API 580 cover?
ANSWER
Risk Based Inspection
Question 3.
What does API 577 cover?
ANSWER
Welding inspection and metallurgy
Question 4.
Who approves on-stream welding?
ANSWER
Owner/user
Question 5.
What does API publication 2201 cover?
ANSWER
Safe hot tapping practices
,Question 6.
Are small bore attachments that do not require reinforcement or additional support considered an
alteration?
ANSWER
No
Question 7.
Who shall establish inspection intervals for thickness measurements and external visual inspections?
ANSWER
The owner/user or inspector
Question 8.
If piping leaks are clamped and required, what should be done?
ANSWER
Location of clamp shall be logged in inspection record and surface marked. Both shall note the
date of installation and location.
Question 9.
What are the intervals for PRD's inspection?
ANSWER
5yrs for typical process; 10yrs for clean service
Question 10.
What are the optional piping systems and fluid services defined by 570?
ANSWER
Hazardous fluid services below threshold limits, as defined by jurisdictional regulations; water(
including fire protection systems), steam, steam-condensate, boiler feed water, and category D
fluid services, as defined in B31.3
, Question 11.
Authorization for alteration work may not be given with consultation with and approval by whom?
ANSWER
Piping engineer
Question 12.
What does ASME B16.34 cover?
ANSWER
Valves- Flanged, Threaded, and Welding End
Question 13.
Piping flexibility is of increasing concern when?
ANSWER
As the diameter of a pipe becomes larger
Question 14.
What is remaining life formula?
ANSWER
(Ta-Tr)/corrosion rate
Question 15.
Class 4 piping includes what services?
ANSWER
Steam, air, nitrogen, water, live oil, category D services, plumbing and sewers
Question 16.
The design of temporary enclosures and repairs shall be approved by who?
ANSWER
Piping engineer
ANSWERS
Question 1.
What does API 579 section 4 cover?
ANSWER
General metal loss
Question 2.
What does API 580 cover?
ANSWER
Risk Based Inspection
Question 3.
What does API 577 cover?
ANSWER
Welding inspection and metallurgy
Question 4.
Who approves on-stream welding?
ANSWER
Owner/user
Question 5.
What does API publication 2201 cover?
ANSWER
Safe hot tapping practices
,Question 6.
Are small bore attachments that do not require reinforcement or additional support considered an
alteration?
ANSWER
No
Question 7.
Who shall establish inspection intervals for thickness measurements and external visual inspections?
ANSWER
The owner/user or inspector
Question 8.
If piping leaks are clamped and required, what should be done?
ANSWER
Location of clamp shall be logged in inspection record and surface marked. Both shall note the
date of installation and location.
Question 9.
What are the intervals for PRD's inspection?
ANSWER
5yrs for typical process; 10yrs for clean service
Question 10.
What are the optional piping systems and fluid services defined by 570?
ANSWER
Hazardous fluid services below threshold limits, as defined by jurisdictional regulations; water(
including fire protection systems), steam, steam-condensate, boiler feed water, and category D
fluid services, as defined in B31.3
, Question 11.
Authorization for alteration work may not be given with consultation with and approval by whom?
ANSWER
Piping engineer
Question 12.
What does ASME B16.34 cover?
ANSWER
Valves- Flanged, Threaded, and Welding End
Question 13.
Piping flexibility is of increasing concern when?
ANSWER
As the diameter of a pipe becomes larger
Question 14.
What is remaining life formula?
ANSWER
(Ta-Tr)/corrosion rate
Question 15.
Class 4 piping includes what services?
ANSWER
Steam, air, nitrogen, water, live oil, category D services, plumbing and sewers
Question 16.
The design of temporary enclosures and repairs shall be approved by who?
ANSWER
Piping engineer
