API 570 Open Book Exam Questions and Answers 100% Pass

API 570 Open Book Exam Questions and Answers 100% Pass 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: - Answer- 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 - Answer- 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. - Answer- 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? - Answer- 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? - Answer- C. 2.55 6- A liquid Penentrant procedure must be qualified when performinf the examination: - Answer- 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? - Answer- C. A-1 or A-2 8- When welding pipe, peeing is prohibited on: - Answer- 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? - Answer- A. 1.00 inch 10- The size of a fillet weld refers to the fillet weld's: - Answer- A. Leg What is the "F- Number" for an E-7018 electrode? - Answer- D. F-4 12- For class 2 piping system, a location should consider performing CUI inspection on: - Answer- B. 33% of suspect areas 13- the set pressure for a relief device protecting piping systems shall be: - Answer- 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: - Answer- 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. - Answer- F. 1100 psig 16- What is the required preheat for an A 106 gr. B pipe that has a wall thickness of 0.500"? - Answer- 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: - Answer- C. schedule 80. 18- Which of the following is an essential variable for welder qualification using the SMAW process? - Answer- 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" - Answer- 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? - Answer- 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: - Answer- 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? - Answer- 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" - Answer- D. 0.191" 24- During radiography of a weld that is 1.0" thick, what is the maximum allowed geometric unsharpness in the radiograph? - Answer- C. 0.020 25- An existing line is replaces with 9 Cr- 1 Mo(A426 gr. CP9). The design conditions are 700 degrees F at 250 psig. The authorize inspector determines that a hydrotest should be performed. What is the minimum required hydrotest pressure? - Answer- D. 511 psig 26- What is the interval for evacuating and inspecting buried pipe that is NOT cathodically protected and has a soil resistance of 12,000 ohm-cm? - Answer- D. 15 years 27- What is the P-Number of a pipefitting made of SA-234-WP9? - Answer- D. P.5B 28- A pic spool made of 9 Cr- 1 Mo is fabricated and stress relieved. What is the maximum acceptable temperature rance for the