Section 6A- Interval & Extent Of Inspection (API 570 pg 43-46) Flashcards

1
Q
  1. If an inspection is NOT completed by its due date, it:

A. It’s considered overdue
B. Must be assessed for risk
C. Must be assessed for fitness for service
D. Requires a scapegoat, the inspector must be fired!

A

A. It’s considered overdue

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2
Q
  1. During an alteration, a new piping system is installed. An API 570 inspector shall inspect piping at the time of installation. Which of the following is NOT required during this inspection?

A. Verify the pipe metallurgy is correct
B. Verify the design calculations
C. Verify shoes and hangers are properly installed
D. Verify whether the pressure-relieving devices are correct
E. Initiate the piping inspection records

A

B. Verify the design calculations

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3
Q
  1. When a new pipe is installed, API 570 recommends that base–line thickness readings be obtained. Why?

A. These will provide a more accurate corrosion rate
B. These will provide a more accurate remaining life
C. This will provide a more accurate interval for the thickness inspection
D. All of the above

A

D. All of the above

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4
Q
  1. The inspection intervals must be reviewed whenever changes occur that could affect the degradation of the pipe. In which of the following situations is a review of the inspection intervals NOT needed?

A. Operating temperature increases
B. Operating pressure decreases
C. Operating pressure increases
D. Fluid composition changes 

A

B. Operating pressure decreases

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5
Q
  1. When must a piping always be inspected?

A. Whenever there is a change in fluid service
B. Whenever the ownership of the piping changes
C. Whenever the location of the piping changes
D. Whenever the ownership and the location change
E. Whenever the ownership or the location change

A

D. Whenever the ownership and the location change

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6
Q
  1. The API 570 piping classification is based on:

A. Consequence of failure.
B. Probability of failure.
C. Either consequence or probability of failure
D. Risk 

A

A. Consequence of failure.

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7
Q
  1. Which of the following is NOT determined by an RBI assessment?

A. Extent of next inspection.
B. Inspection interval.
C. Pipe’s maximum allowed working pressure 
D. Type and amount of NDE at the next inspection

A

C. Pipe’s maximum allowed working pressure

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8
Q
  1. If an RBI process is NOT used, who is responsible to set inspection intervals for piping systems? (Two answers – code conflict.)

A. Authorized inspector
B. Owner/user or piping engineer
C. Engineer or inspector
D. Inspector or corrosion specialist
E. Owner/user or inspector

A

C. Engineer or inspector
&

E. Owner/user or inspector

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9
Q
  1. A class 2 Circuit has a remaining life of 3 years. What is the maximum interval for the thickness measurement inspection?

A. 1 year
B. 1.5 years
C. 2 years
D. 3 years
E. Lesser of 1/2 life or 5 years
F. Lesser of 1/2 life for 10 years

A

C. 2 years

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10
Q
  1. A class 1 circuit has a remaining life of 1.5 years. What is the maximum interval for the thickness measurement inspection?

A. 0.75 years
B. 1 year
C. 1.5 years
D. 2 years

A

C. 1.5 years

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11
Q
  1. What is the maximum interval for an external inspection of a class 1 piping circuit?

A. 3 years
B. 5 years
C. 10 years
D. Lesser of 1/2 life or 5 years
E. Lesser of 1/2 life or 10 years

A

B. 5 years

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12
Q
  1. The maximum interval for thickness measurements on a class 1 piping circuit is:

A. 3 years
B. 5 years
C. 10 years
D. Lesser of 1/2 life or 5 years
E. Lesser of 1/2 life or 10 years

A

D. Lesser of 1/2 life or 5 years

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13
Q

13.The maximum interval for the External inspection of a class 2 piping circuit is:

A. 3 years
B. 5 years
C. 10 years
D. Lesser of 1/2 life or 5 years
E. Lesser of 1/2 life or 10 years

A

B. 5 years

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14
Q
  1. The maximum interval for Thickness measurements on a class 2 piping is:

A. 3 years
B. 5 years
C. 10 years
D. Lesser of 1/2 life or 5 years
E. Lesser of 1/2 life or 10 years

A

E. Lesser of 1/2 life or 10 years

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15
Q
  1. The maximum interval for the External inspection of a class 3 piping circuit is:

A. 3 years
B. 5 years
C. 10 years
D. Lesser of 1/2 life or 5 years
E. Lesser of 1/2 life or 10 years

A

C. 10 years

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16
Q
  1. The maximum interval for Thickness measurements on a class 3 piping is:

A. 3 years
B. 5 years
C. 10 years
D. Lesser of 1/2 life or 5 years
E. Lesser of 1/2 life or 10 years
F. Inspection is optional

A

E. Lesser of 1/2 life or 10 years

17
Q
  1. What is the maximum interval for Thickness measurements on a class 4 piping?

A. 3 years
B. 5 years
C. 10 years
D. Lesser of 1/2 life or 5 years
E. Lesser of 1/2 life or 10 years
F. Inspection is optional

A

F. Inspection is optional

18
Q
  1. What is the maximum interval for the external inspection on a class 4 piping?

A. 5 years
B. 10 years
C. Lesser of 1/2 life or 5 years
D. Lesser of 1/2 life for 10 years
E. Inspection is optional

A

E. Inspection is optional

19
Q
  1. What is The maximum interval for Thickness measurements on a class 2 Injection point circuit?

A. 3 years
B. 5 years
C. 10 years
D. Lesser of 1/2 life or 3 years
E. Lesser of 1/2 life or 5 years
F. Lesser of 1/2 life or 10 years

A

D. Lesser of 1/2 life or 3 years

20
Q
  1. What is the maximum interval for the External inspection of a class 2 Injection point circuit?

A. 3 years
B. 5 years
C. 10 years
D. Lesser of 1/2 life or 3 years
E. Lesser of 1/2 life or 5 years
F. Lesser of 1/2 life or 10 years

A

B. 5 years

21
Q
  1. Which is NOT a major factor in setting an inspection interval on a piping system?

A. Construction code used to build the pipe.
B. Corrosion rates- both long and short.
C. Jurisdictional requirements.
D. Pipe classification.
E. Remaining life of the piping system.

A

A. Construction code used to build a pipe.

22
Q
  1. In which of the following situations does the thickness inspection interval for a piping system NOT need to be reviewed?

A. Chloride Content in the process has tripled
B. Process pressure decreased 100 psig
C. Process temperature has increased 150°F.
D. Thickness inspection was just completed.

A

B. Process pressure decreased 100 psig

23
Q
  1. A pipe is in non- continuous service. When can the thickness measurement interval be based on “years of service “ vs “calendar years”?

A. Never
B. Whenever approved by the inspector.
C. Whenever approved by the engineer.
D. When out of service, the pipe is isolated from the process and not exposed to a corrosive environment.

A

D. When out of service, the pipe is isolated from the process and not exposed to a corrosive environment.

24
Q
  1. The Thickness measurement interval for a class 2 pipe circuit is 8 years. The pipe is in intermittent service and will be out of service 50% of the time. When out of service, the pipe will be drained and protected from internal process corrosion. The next thickness measurement should be conducted in:

A. 4 calendar years.
B. 5 calendar years.
C. 4 years of service (8 Calendar years).
D. 5 years of service (10 calendar years)
E. 8 years of service
F. 8 years of service (16 calendar years)

A

F. 8 years of service (16 calendar years)

25
Q
  1. Inspection intervals should be reviewed:

A. Every 5 years.
B. Every 10 years.
C. After every inspection.
D. After every change in plant ownership.

A

C. After every inspection.

26
Q
  1. All API 570 piping systems, except those with RBI intervals, shall:

A. Be assigned an API 570 classification.
B. Have a minimum of five CML’s on each circuit.
C. Be inspected by an authorized inspector.
D. Coated or insulated

A

A. Be assigned an API 570 classification.

27
Q
  1. The API 570 piping classification is based on:

A. Consequence of failure.
B. Probability of failure.
C. Either failure consequence or probability.
D. Risk

A

A. Consequence of failure.

28
Q
  1. Who is responsible to maintain a record of the piping classification for plant’s process fluids?

A. Authorized inspector.
B. Corrosion specialist.
C. Owner/user.
D. Process engineer.
E. Piping engineer.

A

C. Owner/user.

29
Q
  1. Which of the following temperatures has little to do with piping classification?

A. Auto – ignition temperature.
B. Boiling point temperature.
C. Flash point temperature.
D. Melting point temperature.

A

D. Melting point temperature.

30
Q
  1. Process services with the highest potential of resulting in an immediate emergency If a leak were to occur are classified as:

A. Class 1
B. Class 2
C. Class 3
D. Severe cycling.

A

A. Class 1

31
Q
  1. Which service is NOT a class 1 piping system?

A. Flammable services that may auto – refrigerate
B. Hydrofluoric acids
C. Process with less than 3% hydrogen sulfide.
D. Piping over public roads.

A

C. Process with less than 3% hydrogen sulfide.

32
Q
  1. Flammable services are considered class 1 piping when the atmospheric boiling point of the process is lower than:

A. 32°F
B. 40°F
C. 50°F
D. 120°F

A

C. 50°F

33
Q
  1. Process streams with H2S are considered class 1 if the H2S content is greater than:

A. 250 ppm.
B. 0.5%.
C. 1.0%.
D. 3.0%.

A

D. 3.0%.

34
Q
  1. Which service is a class 2 piping system?

A. Anhydrous hydrogen chloride
B. Off-site propane.
C. Off-site gasoline.
D. On-site sulfuric acid

A

D. On-site sulfuric acid

35
Q
  1. Off-site hydrogen is considered a:

A. Class 1 piping system
B. Class 2 piping system.
C. Class 3 piping system.
D. Class 4 piping system.

A

C. Class 3 piping system.