API 570 Piping Inspection Code Exam Questions, Exams of Nursing

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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. 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

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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

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? - Answers-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" - Answers-D. 0.191" 24 - During radiography of a weld that is 1.0" thick, what is the maximum allowed geometric unsharpness in the radiograph? - Answers-C. 0. 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? - Answers-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? - Answers-D. 15 years 27 - What is the P-Number of a pipefitting made of SA- 234 - WP9? - Answers-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 post weld heat treatment? - Answers-D. 1300 - 1400 degrees F 29 - RT will be conducted at the completion of welding a 6 NPS pipe that has a pipe wall 0.280". The radiographer does not have access to the inside of the pipe. Whar size of hole-type IQI should be used for the radiograph? (Exess reinforcement is not an issue) - Answers-A. 12 30 - Impacting testing is required during a piping repair of a P-5B material. The impact testing must be conducted in accordance with what code? - Answers-D. ASTM A 31 - Which of the following bolting materials should not be used for class 600 flange? - Answers-D. A307-B 32 - Whar is the qualifying factor "E" for a pipe made of A381- Y35? Sport radiography accoring to B31.3 has been performed. - Answers-C. 0. 33 - A pipe with a locally thin area can be repaired with a fillet-weld patch only if: - Answers-D. the pipe material has a yield strength of less that 40,000 psi

34 - A pipe sustem has a design pressure of 825 psig at a design temperature of 500 degress F. The flanges are made of ASTM A182 Gr F11 CL.2. What is the minimum flange class ratinf for this system? - Answers-B. class 400 35 - What is the retirement thickness of the described blind(blank)? Line size: 8 NPS Design pressure: 300 psig Allowable stress at design temp: 15,800 psi Gasket ID: 8.25" - Answers-C. 0.493" 36 - An A106 Gr. C tensile specimen is tested and breaks in the base metal. What is the minimum acceptable tensile stress for this test? - Answers-D. 66,500 psi 37 - A pneumatic test is performed on an altered piping system. The pipe is made of A106 gr. C material and is designed for 300 psig at 700 degrees F. what is the required test pressure - Answers-B. 330 psig 38 - When a pipe is subject to external pressure, the required thickness for straight pipe shall be calculated using: - Answers-A. ASME B&PV Code section VII 39 - Pipe is normally made of welded rolled plate when the nominal size is greater than:

• Answers-C. 16 inch 40 - For welders who weld pipw, an employer may accept the welder performance qualifications from another employer only if: - Answers-A. they are acceptableto the owner's inspector 41 - Consumable inserts can be specified on a WPS that is used for piping only if: - Answers-D. the insert is the same basic material composition as the filler metal 42 - Amine stress corrosion cracking is most aggressive with: - Answers-A. non-stress relieved carbon steels 43 - A 200 psig pneumatic test will be conducted on a piping system. A preliminary check of the joints should be conducted at what pressure? - Answers-B. 25 psig 44 - An alteration is performed to a Normal Service pipe that is 0.500" thick. What is the maximum allowed length of incomplete penetration in a circumferential weld? - Answers-D.1.5" in any 6" of weld 45 - Determine the position of the following groove weld. The weld is inclined 10 degrees up from the horizontal plane. The cap is rotated 35 degrees from the top of the weld - Answers-B. horizontal 46 - Densitometers used for weld quality radiography should be calibrated every: - Answers-C. quarter

47 - A 8 NPS piping system is being rerated. The pipe is made of A106 gr C and has a design temperature of 700 degrees F. The Current thickness is 0.245". The pipe is corroding at 0.004 ipy. The next set of thickness measurements will be in 6 years. Determine the maximum pressure that this piping system can be rerated - Answers-B. 877.0 psig 48 - A welder qualifies on a 6 NPS pipe. What is the minimum pipe size the welder is now qualifies to weld? - Answers- 2 - 7/8" OD 61 - A 0.500" thick gasoline line is being altered. What is the maximum allowed height of external reinforcement on these new welds? - Answers-B. 1/8" 62 - Whenn performing a liquid penetrant examination, the surfacce to be examined should be clean. The are that shall be clean includes the surface to be examined and the adjacent: - Answers-A. 1" 63 - The minimum thickness of a gate valve can be determined by using the minimum thickness: - Answers-E. formula in ASME B31.3 and multiplying the answer by 1. 64 - A welding neck flange is used in a 6 NPS schedule 40 piping system. Whar is the required bevel angle on a welded end of the flange? - Answers-C. 37-1/2 degrees 49 - When performing a liquid penetrant examination on a steel weld, the minimum dwell time for the pentrant shall be: - Answers-B. 5 minutes 50 - Determine the minimum design temperature for the following pipe. Material: A671 Gr. CC 60 Nominal Thickness: 1.000" Retirement thickness: 0.750" Stress ratio: 0.8 - Answers-E. - 21 degrees F A pipe is being replaced and upgraded. Determine the pipe schedule that should be selected. Design pressure: 795 psig Design temp: 750 degrees F. Original corrosion allowance: 0.170" Size: 10 NPS Material: A106 gr. B - Answers-D. schedule 80 52 - During alloy welding: - Answers-C. one electrode from each lot should be sampled 53 - When flanges are connected they should parallel within: - Answers-C. 1/16 in/ft measured across the diameter

54 - A pressure test is being conducted at 400 psig. When selecting a pressure gauge, the maximum allowed pressure range on the gauge is: - Answers-D. 0-1600 psig 55 - A welder takes a qualification test using a 4G coupon. If the coupon passes the required exams, the welder is qualified to weld-fillet welds in which positions? - Answers-D. flat, horizontal and overhead 56 - During an alteration to an 10 NPS pipe, the inspector discovers a scratch on the face(gasket area) of a new flange. The scratch is deeper than the serrations and is oriented in a radial direction. What is the maximum allowed of this scratch. - Answers-B. 0.180" 57 - Bob the builder is being qualified to weld with the SMAW process. During the test, Bob uses a 6G coupon that is 0.500" thick. What bend tests should be used to qualify Bob the Builder? - Answers-. 58 - A wire type IQI is used during radiography on 0.500" thick pipe. The RT tech has access to the inside of the pipe. What wire set should be used for this radiograph? - Answers-B. Set B 59 - A welded split sleeve is used to make a temporary repair to a corroded pipe. E- 7018 electrodes are used to make the circumferential weld. The maximum allowed diameter of the electrodes is: - Answers-B. 5/32" 60 - An aluminum product transfer line operates at 300 degrees F. and is 600 feet long. During operation how much will the pipe grow? - Answers-A. 22" 65 - A 2 NPS piping system is being fabricated using sicket weld components. The retirement thickness of the pipe is 0.80". What is the required size of the fillet welds? - Answers-D. 0.125" 66 - What is the structural minimum thickness for a 12 NPS 9% chrome pipe with a design temperature of 300 degrees F? - Answers-E. 0.110"