Questions Dec. 2011)

Questions from memory (Dec. 2011) I’m 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? abcd-

Yes Yes, but specimen #1 is rejected Yes. But specimen # 2 is rejected 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 abcd-

Yes No No need for bend test Yes. But specimen # 1 and are rejected.

Third question Thickness range was mentioned in the WPS abcd-

Yes No Yes, but not the right range Don’t remember

Other closed Book Questions What is the minimum thickness measurement interval for CUI . abcd-

Depends on the classification 3 years 10 years 5 years

If RBI is not being used, the interval between piping inspections shall reviewed when changing service from: abcd-

Anhydrous to Hydrofluoric acid Natural gas to hydrogen Natural gas to Hydrofluoric acid

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 abcd-

F.S F B S.S

Which of the following electrodes are suitable for GMAW GTAW? abcd-

E 7018 ER707-E Don’t remember Don’t remember-

Which of the following valves has will never encounter pigging problems abcd-

Gate Ball Slide Don’t remember the forth one

When calibrating UT equipment, the difference in temperature between the probe and part being examined shall not be more than _____ abcd-

Don’t remember Don’t remember Don’t remember Don’t 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 revised d- 6 months

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

abcd-

Owner user Piping engineer Piping inspector 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- Don’t remember

During a hydrotest, the relief valve has opened when the pressure reached the set point of the relief valve, what is your correct action abcd-

Reduce the pressure Do nothing Review the procedure Replace the relief valve

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

Every year Before and after use Every two years Every six months

Inspection of Class 2 and Class 3 secondary SBP is abcd-

Mandatory Optional Same requirements as primary process piping

Every 10 years

Threaded connections associated with machinery and subject to fatigue damage should be inspected

-

Every six month Every one year Periodically Treated as other normal piping circuits

Things that normally found on flanges: abcd-

Temperature range Manufacturer name and marking Flange classification size

During inspection, you found CUI with a damaged insulation; the piping was class II, the allowed percentage of insulation remove is abcd-

100% 50% 33% Up to the inspector

Service conditions have been changed for one the piping. Determining the probable rate of corrosion 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 engineer d- Calculated by API 570 inspector

Computation for MWAP is as follows: abcd-

Actual thickness minus twice the estimated corrosion loss Actual thickness minus the estimated corrosion loss Actual thickness minus corrosion rate times RL 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.