questions dec. 2011)

7/28/2019 Questions Dec. 2011)

1/5

Questions from memory (Dec. 2011)

Im forwarding these questions to be shared with your future

students

WPS and PQR (three questions for one WPS and one PQR)

- They provided one WPS & one PQR

Thickness on the WPS was 0.4320, and there were two tensile tests on PQR with a

thickness of 0.8 inches each.

First question,

Were tensile tests on the PQR acceptable?

a- Yesb- Yes, but specimen #1 is rejected

c- Yes. But specimen # 2 is rejected

d- No. the number of test is not educating for the given thickness.

2nd

question

- They were asking if bend tests were acceptable

On the PQR, all of the results were below 3 mm

Choices were

a- Yes

b- No

c- No need for bend test

d- Yes. But specimen # 1 and are rejected.

Third question

Thickness range was mentioned in the WPS

a- Yesb- No

c- Yes, but not the right range

d- Dont remember


2/5

Other closed Book Questions

What is the minimum thickness measurement interval for CUI .

a- Depends on the classification

b- 3 yearsc- 10 years

d- 5 years

If RBI is not being used, the interval between piping inspections shall reviewed when changing

service from:

a- Anhydrous to Hydrofluoric acid

b- Natural gas to hydrogen

c- Natural gas to Hydrofluoric acid

d- Natural gas to on-site strong acids

Light letter B on the radiography film indicates:

- Sufficient back scatter and film is acceptable

- Insufficient backscatter and film is rejected

- Insufficient backscatter and film is acceptable

- Sufficient backscatter and film is rejected

During radiography, when source side film is not possible, a film side source is used with the

following letter/s on the film

a- F.S

b- F

c- B

d- S.S

Which of the following electrodes are suitable for GMAW GTAW?

a- E 7018

b- ER707-E

c- Dont remember

d- Dont remember-


3/5

Which of the following valves has will never encounter pigging problems

a- Gate

b- Ball

c- Slide

d- Dont remember the forth one

When calibrating UT equipment, the difference in temperature between the probe and part

being examined shall not be more than _____

a- Dont remember

b- Dont remember

c- Dont remember

d- Dont remember

You can start coating activities prior to the following tests except:

- Flexibility test

- Initial service test

- Leak test

- Hydrotest

Service conditions have been changed for one the piping. Rate of corrosion has to

determined no longer than

a- One year from the time of installation

b- Three months

c- Rate of corrosion need not to be revisedd- 6 months

When performing a temporary patch repair, no need to have approval from:

a- Owner userb- Piping engineerc- Piping inspectord- Corrosion specialist

When you notice a corroded support that is attached to one of the piping, and it is required to

lift the pipe to verify the corrosion, what is your correct action

a- Take the line out of service

b- Ask for a detailed lifting procedure

c- Lift pipe immediately to check the corrosion

d- Dont remember


4/5

During a hydrotest, the relief valve has opened when the pressure reached the set point of the

relief valve, what is your correct action

a- Reduce the pressure

b- Do nothing

c- Review the procedured- Replace the relief valve

The acceptable frequency to check the magnetizing power of a yoke is

a- Every year

b- Before and after use

c- Every two years

d- Every six months

Inspection of Class 2 and Class 3 secondary SBP is

a- Mandatory

b- Optional

c- Same requirements as primary process piping

d- Every 10 years

Threaded connections associated with machinery and subject to fatigue damage should beinspected

- Every six month

- Every one year

- Periodically

- Treated as other normal piping circuits

Things that normally found on flanges:

a- Temperature range

b- Manufacturer name and marking

c- Flange classification

d- size

During inspection, you found CUI with a damaged insulation; the piping was class II, the allowed

percentage of insulation remove is

a- 100%

b- 50%

c- 33%

d- Up to the inspector


5/5

Service conditions have been changed for one the piping. Determining the probable rate ofcorrosion from which the remaining wall thickness at the time of the next inspection can be

a- Left as is

b- Estimated from similar material in comparable service and comparable operating

conditions.

c- Calculated by a piping engineerd- Calculated by API 570 inspector

Computation for MWAP is as follows:

a- Actual thickness minus twice the estimated corrosion loss

b- Actual thickness minus the estimated corrosion loss

c- Actual thickness minus corrosion rate times RL

d- Actual thickness minus twice corrosion rate times RL

During a routine inspection, you notice a bulge in a pressure vessel that is attached to a piping.

Your immediate action is

- Evaluate the case as per API 579

- Evaluate the case as per ASME B31.3

- Report the case to operation

- Take both the vessel and the piping out of service for evaluation

There was no question about thermal expansions

All short term, long term, and remaining life questions were closed book

I also remember many questions, but they need to be organized in my brain. So when ready, I

will forward them to you.

questions dec. 2011)

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