API 570 OPEN BOOK EXAM | 2024 | QUESTIONS AND ANSWERS
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API 570 OPEN BOOK EXAM | 2024 | QUESTIONS AND ANSWERS
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: - C.190 psig
2- Determine the maximum allowe...
API 570 OPEN BOOK EXAM | 2024 |
QUESTIONS AND ANSWERS
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: - 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 - 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. - 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? - 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? - C. 2.55
6- A liquid Penentrant procedure must be qualified when performinf the examination: -
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? -
C. A-1 or A-2
8- When welding pipe, peeing is prohibited on: - 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? - A.
1.00 inch
10- The size of a fillet weld refers to the fillet weld's: - A. Leg
What is the "F- Number" for an E-7018 electrode? - D. F-4
12- For class 2 piping system, a location should consider performing CUI inspection on:
- B. 33% of suspect areas
, 13- the set pressure for a relief device protecting piping systems shall be: - 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: - 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. - F. 1100 psig
16- What is the required preheat for an A 106 gr. B pipe that has a wall thickness of
0.500"? - 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: - C. schedule 80.
18- Which of the following is an essential variable for welder qualification using the
SMAW process? - 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" - 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? - 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: - 12 ft-lbs
22- Joe Welder qualifiedusing a 4G coupon that is 0.625" thick. The qualification weld
was made with 4 layers. What is the maximum weld material thickness that Joe is now
qualified to weld? - D. Unlimited
23- What is the retirement thickness of the described pipe?
Design Pressure: 500 psig Size: 12 NPS
Design temperature: 700 degrees F
Material: A106 gr. B
Original corrosion allowence: 0.125" - D. 0.191"
24- During radiography of a weld that is 1.0" thick, what is the maximum allowed
geometric unsharpness in the radiograph? - C. 0.020
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