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API 570 OPEN BOOK EXAM
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API 570 OPEN BOOK EXAM
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API 570 OPENBOOK EXAM
1- A hydrotest is being conducted on an underground line as a substitute for the external
inspection. The test pressure is 200 psig. At the end of the test, the pressure must be at
least: - Answers-C.190 psig
2- Determine the maximum allowed pressure for a class 300 flange that has a design
temperature of 950 degrees F. The flange material is ASTM A217 gr.C12 - Answers-B.
375 psig
3- An 8 NPS pipe is being replaced with A106 gr. B material. The pipe retirement
thickness is 0.218" and the corrosion allowance is 0.125". What is the minimum
thickness of pipe that could be ordered after adjusting for mill-tolerance. - Answers-E.
0.392"
4- A welder is being qualified by RT on a 0.600" plate using the SMAW process. What is
the maximum allowed length of an individual elongated slag inclusion for this qualifying
test? - Answers-B. 0.200"
5- During the evaluation of a radiograph, the density at the IQI is 3.0. What is the
minimum density allowed on this radiograph in the weld? - Answers-C. 2.55
6- A liquid Penentrant procedure must be qualified when performinf the examination: -
Answers-C. on materials below 40 degrees F.
7- If the "A-Number" on the PQR is an A-2, what "A-Number" must be on the WPS? -
Answers-C. A-1 or A-2
, 8- When welding pipe, peeing is prohibited on: - Answers-D. only the root and final
passes.
9- What is the diameter of the bolts that are used for a 6 NPS class 600 flange? -
Answers-A. 1.00 inch
10- The size of a fillet weld refers to the fillet weld's: - Answers-A. Leg
What is the "F- Number" for an E-7018 electrode? - Answers-D. F-4
12- For class 2 piping system, a location should consider performing CUI inspection on:
- Answers-B. 33% of suspect areas
13- the set pressure for a relief device protecting piping systems shall be: - Answers-D.
set in accordance with ASME B&PV section VIII
14- When performing a WFMPT examination, prior to the examination, the examiner
shall be in a darkened area for: - Answers-C. 5 minutes
15- What is the maximum allowed hydrotest pressure for piping system with class 300
flanges that are made of ASTM A182 gr. F316 material? the sustem has a design
temperature of 600 degrees F. - Answers-F. 1100 psig
16- What is the required preheat for an A 106 gr. B pipe that has a wall thickness of
0.500"? - Answers-E. preheat is not required
17- According to B31.3 a 1-1/2 NPS carbon steel threaded pipe that is installed in a
Normal Service should have a minimum wall thickness of: - Answers-C. schedule 80.
18- Which of the following is an essential variable for welder qualification using the
SMAW process? - Answers-B. deletion of backing
19- Without performing impact tests, what is the minimum allowed temperature for the
following piping system?
Material: A106 gr. B
Line size: 6 NPS
Nominal thickness: 0.750"
Retirement thickness: 0.500" - Answers-C. +15 degrees F.
20- A tensile test specimen breaks at 18,750 lbs. The specimen is 3/4"wide and 1/2"
thick. What is the tensile strength of the specimen? - Answers-D. 50,000 psi
21- During the design of a pipe alteration, it is determined that impact testing of the pipe
is required. The pipe material is a A106 gr. C and is considered a fully deoxidized steel.
During impact testinf each specimen should break at or above: - Answers-12 ft-lbs
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