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API 570 Closed Book Exam A questions and answers graded A+ 2024/2025
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API 570 Closed Book Exam A questions and answers graded A+ 2024/2025
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API 570 Closed Book Exam A1- In severe refinery services which type of pipe is normally used? - ANSC. Seamless
2- Pressure applied inside a pipe creates stresses in the pipe wall. These stresses are
highest on which weld orientation? - ANSB. Longitudinal weld
3- In which of the following is not an acceptable method for establishing piping corrosion rate
in a new service? - ANSD. corrosion data from phone discussion with a consultant corrosion
engineer.
4- PEr B31.3, howmch RT is conducted on circumferential welds of a pipe in Normal
service? - ANSB. 5%
5- For welded pipe, the normal thickness under tolerance is: - ANSB. -0.01 inch
6- When qualifying a weld procedure the essential variables must: - ANSC. be recorded on
both the WPS and PQR
7- A pipe has a thickness designation of "40S". What does the "s" mean? - ANSC. Stainless
Steel
8- Which of the following type of pipe should not be used in pressurized hydrocarbon
service? - ANSA. threaded cast iron
9- Generally socket-welded piping is not used for nominal pipe sizes above - ANSB. 2 inch
10- A propane piping system should be classified as: - ANSA. Class one
11- According to ASME/ANSE B16.5 flanges made from plate materials can only be used
for: - ANSA. Blind flanges
12- The corrosiveness of soils can be determined by measuring the soil's - ANSB. resistivity
13- Preheat should never be substituted for postweld treatment if the: - ANSC. post weld
heat treatment was designed to prevent environmental cracking
14- Which of the following is required marking on ASME/ANSI B16.5 flanges? - ANSB.
Nominal pipe size
15- During welding, non-essential variables" - ANSA. Must be recorded only on the WPS
and must be followed by the welder
16- During a hydrotest, all joints should be: - ANSB. left uninsulated
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