API 570 Open Book Practice Exam PDF

# API 570 Certification ## Open Book - Practice Exam ## Name: 1. A hydrotest is 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: a. 100 psig d. 200 psig b. 190 psig...

# API 570 Certification ## Open Book - Practice Exam ## Name: 1. A hydrotest is 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: a. 100 psig d. 200 psig b. 190 psig e. 220 psig c. 195 psig 2. Determine the maximum allowed pressure for a Class 300 flange that has a design temperature of 950 °F. The flange material is ASTM A217 gr. C12. a. 135 psig b. 375 psig c. 750 psig d. Not allowed - temperature is too high for this material 3. An 8 NPS pipe is being replaced with A106 gr. B material. The pipe retirement thickness (tmin) 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? a. 0.218" d. 0.353" b. 0.249" e. 0.392" c. 0.343" 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? a. 0.125" c. 0.600" b. 0.200" d. 1.200" 5. Protection in a boiler from Boiler Feed Water Corrosion is accomplished by: a. injecting chlorines to kill microbiological bugs. b. injecting caustic to lower the pH to < 4.0. c. lowering solids content in boiler feed water to less than 50 ppm. d. maintaining a protective corrosion layer of magnetite (Fe3O4). 6. A liquid penetrant procedure must be qualified when performing the examination: a. on exotic materials. b. on materials over 2.0" thick. c. on materials below 40 °F. d. with fluorescent penetrants. 7. When qualifying a SMAW weld procedure, if the "A-Number" on the PQR is an A-2, what "A-Number" must be on the WPS? a. A-1 c. A-1 or A-2 b. A-2 d. "A-Numbers" are not required on the WPS 8. When welding pipe, peening is prohibited on: a. all welding. c. only the final pass. b. only the root pass. d. the root and final passes. 9. A rectangular insert plate that is 1/2" thick is being install per ASME PCC-2. What is the minimum allowed corner radius: a. 1" c. 6" b. 3" d. Unspecified radius 10. 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? a. 2.00 c. 2.55 b. 2.10 d. 3.00 11. Which materials are generally not susceptible to Acidic Sour Water Corrosion? This may have more than one correct answer, please select all answers that apply. a. Carbon Steel c. Nickel Alloys b. Copper Alloys d. Stainless Alloys 12. For Class 2 piping, a petrochemical plant should consider performing CUI inspections at: a. 10% of the non-damaged areas. b. 33% of the non-damaged areas. c. 50% of the non-damaged areas. d. 100% of the non-damaged areas. 13. The set pressure for a relief device protecting piping systems shall be set: a. no higher than 120% of design pressure. b. by a valve repair organization holding a "VR" stamp. c. in accordance with the rules of API 920. d. in accordance with the rules of ASME B&PV Section VIII. 14. When performing a WFMPT examination, prior to the examination, the examiner shall be in a darkened area for: a. the time period required to warm up the black light. b. 1 minute. c. 5 minutes. d. 15 minutes. 15. What is the maximum allowed hydrotest pressure for piping with Class 300 flanges that are made of ASTM A182 gr. F316 material? The design temperature is 600 °F. a. 450 psig d. 725 psig b. 675 psig e. 1080 psig c. 720 psig f. 1100 psig 16. What is the required preheat temperature for an A106 gr. B pipe with a carbon content less than 0.2% and has a wall thickness of 0.500"? a. 10 °F d. 150 °F b. 50 °F e. Preheat is not required c. 79 °F 17. Atmospheric corrosion becomes less of an issue at temperatures above: a. 250 °F. c. 450 °F. b. 300 °F. d. 600 °F. 18. Which of the following is an essential variable when qualifying a welder using the SMAW process? a. Addition of backing b. Deletion of backing c. Change in base-metal thickness d. Change in groove design 19. Which document provides information on Integrity Operating Windows? a. API 583 c. NACE SP-0170 b. API 584 d. NACE RP-0502 20. What are the primary technical concern(s) when performing In-Service welding? This may have more than one correct answer, please select all answers that apply. a. Burn through c. Coking b. Carburization d. Hydrogen Cracking 21. During the design of a pipe alteration, it is determined that impact testing of the pipe is required. The pipe material is A106 gr. C and is considered a fully deoxidized steel. During impact testing all three specimens should break at or above: a. 10 ft-lbs. c. 15 ft-lbs. b. 12 ft-lbs. d. 16 ft-lbs. 22. What is the retirement thickness ("tmin") for this 12 NPS pipe? Design Pressure: 500 psig Material: A106 gr. B Design Temperature: 700 °F Original Corrosion Allowance: 0.125" a. 0.166" d. 0.189" b. 0.172" e. 0.253" c. 0.179" f. 0.379" 23. During radiography of a weld that is 1.0" thick, what is the maximum allowed geometric unsharpness in the radiograph? a. None is allowed c. 0.020" b. 0.010" d. 0.025" 24. **Matching Question**: Match the given Temperature to Listed Situations. (draw lines between corresponding item & answer) a. CS HAZ created - base metal temp during welding **1. 140-350 °F** b. CUI Temperature Range for Austenitic SS **2. 400°F** c. Minimum preheat temp for 5B mtl, with SMTS = 70 ksi **3. > 500°F** d. Normal CS PWHT Temp **4. 1100-1200 °F** e. Sulfidation of iron-based alloys usually begins **5. > 1350 °F** 25. An existing line is replaced with 9 Cr - 1 Mo (A426 gr. CP9). The design conditions: 700 °F at 250 psig. The Authorized Inspector determines that a hydrotest should be performed. What is the minimum required hydrotest pressure? a. 341 psig c. 412 psig b. 375 psig d. 511 psig 26. What is the interval for excavating and inspecting buried piping that is not cathodically protected and has a soil resistance of 12,000 ohm-cm? a. 5 years c. 10 years b. 7.5 years d. 15 years 27. A carbon steel pipe is filled with seawater flowing at 4 fps (feet-per-second). What is the expected corrosion rate from Erosion-Corrosion? a. 4 mpy c. 13 mpy b. 6 mpy d. 47 mpy 28. A pipe spool made of P-5B - Group 1 material, is fabricated and postweld heat treated. What is an acceptable temperature range for this PWHT? a. 1100-1200 °F c. 1250-1400 °F b. 1200-1300 °F d. 1400-1475 °F 29. A new 6 NPS pipe weld will be radiographed. The pipe wall thickness is 0.280". The RT tech does not have access to the inside of the pipe. What size of hole-type IQI should be used for this radiograph? (Excess reinforcement is not an issue.) a. 12 c. 17 b. 15 d. Set Type B 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? a. ASME B&PV Code Section V b. ASME B&PV Code Section VIII c. ASNT SNT-TC-1A d. ASTM A370 31. Which of the following bolting materials should not be used for a Class 600 flange? a. A193-B7 c. A320-L7 b. A193-B5 d. A307 - B 32. What is the Quality Factor "E" for a pipe made of A381 - Y35? Spot radiography according to B31.3 has been performed. a. 0.80 c. 0.90 b. 0.85 d. 1.00 33. Per PCC-2, what are common electrodes that are used when performing SS weld overlay on carbon steel base metal? a. Type 309 b. Type 310 c. Type 309 followed by Type 308 d. Type 308 followed by Type 309 34. A pipe system has a design pressure of 825 psig at a design temperature of 500 °F. The flanges are made of ASTM A182 Gr F11 Cl.2. What is the minimum flange class rating for this system? a. Class 300 c. Class 600 b. Class 400 d. Class 900 35. What is the minimum required thickness of the describe blind (blank)? Line Size: 8 NPS Allowable Stress: 15,800 psi Design Pressure: 300 psig Gasket ID: 8.25" a. 0.438" c. 0.493" b. 0.477" d. 0.515" 36. During weld procedure qualification, an A106 Gr. C tensile specimen is tested and breaks in the base metal. What is the minimum acceptable tensile stress for this test? a. 48,000 psi d. 66,500 psi b. 57,000 psi e. 70,000 psi c. 60,000 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 °F. What is required minimum test pressure? a. 300 psig d. 450 psig b. 330 psig e. 546 psig c. 400 psig 38. The flash point of diesel is: a. about -45 °F. c. between -45 °F & 125 °F b. about 25 °F. d. between 125 °F & 200 °F. 39. Pipe is normally made of welded rolled plate when the nominal size is greater than: a. 8 inch c. 16 inch b. 12 inch d. 24 inch 40. Which of the following can contribute to Chloride Stress Corrosion Cracking? a. Dissolved hydrogen c. Dissolved nitrogen b. Dissolved oxygen d. Dissolved sulfide 41. Per PCC-2, a fillet welded patch must overlap sound metal by at least: a. 1". c. the greater or 2T or 2". b. 2". d. the greater of 2T of 4". 42. A Crude Unit is using crude that has a sulfur content of 0.6%. The process temperature is 600 °F. What is the expected corrosion rate for a carbon steel piping system? a. 2 mpy c. 11 mpy b. 5 mpy d. 20 mpy 43. A pneumatic test at 200 psig will be conducted on a piping system. A preliminary check of the joints should be conducted at: a. 10 psig. c. 50 psig. b. 25 psig. d. 100 psig. 44. A weld procedure is being qualified to perform Controlled-Deposition Welding as a substitute for PWHT. The coupon and test weld are both 0.5" thick. What wall thickness and weld thickness are qualified for this procedure? a. Wall 0.5", Weld < 0.5" c. Wall 1/16" - 1", Weld < 1" b. Wall2", Weld < 0.5" d. Wall 3/16" - 1", Weld < 1" 45. 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? a. 0.000" c. 0.100" in any 6" of weld b. 0.031" d. 1.5" in any 6" of weld 46. 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 being straight up. a. Flat c. Vertical b. Horizontal d. Overhead 47. An 8 NPS piping system is being rerated. The pipe is made of A106 gr C and has a design temperature of 700 °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. a. 762.9 psig d. 937.8 psig b. 836.0 psig e. 1039.6 psig c. 901.3 psig f. 1064.4 psig 48. The NDE method called Alternating Current Flux Leakage is useful in finding: a. MIC damage. c. subsurface cracks. b. porosity in weld. d. surface-breaking cracks. 49. Nickel alloys have the greatest susceptibility to Chloride Stress Corrosion Cracking when the nickel content is: a. less than 5%. d. between 8% to 18%. b. between 2.25% to 12%. e. above 35%. c. between 8% to 12%. 50. Determine the minimum design temperature for the following pipe. Material: A671 Gr. CC 60 Nominal Thickness: 1.000" Stress Ratio: 0.8 Retirement Thickness: 0.750" a. 33 °F e. -23 °F b. 13 °F f. - 30 °F c. - 3 °F g. - 37 °F d. - 17 °F 51. A pipe is being replaced and upgraded. Determine the pipe schedule that is needed. Design Pressure: 795 psig Design Temperature: 750 °F Size: 10 NPS Material: A106 gr. B Original Corrosion Allowance: 0.170" a. Schedule 30 d. Schedule 80 b. Schedule 40 e. Schedule 100 c. Schedule 60 f. Schedule 120 52. The principle used with Resistivity Testing PMI tools is called the: a. Barlow effect. c. Estee Lauder effect. b. Reynold effect. d. Seebeck effect. 53. When flanges are connected, they should parallel within: a. 1/16". c. 1/16 in/ft measured across the diameter. b. 1/8". d. 1/8 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: a. 0 - 600 psig. c. 0 - 1200 psig. b. 0 - 800 psig. 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 position(s)? a. Only Overhead c. Flat, Horizontal and Overhead b. Flat and Overhead d. All positions 56. During an alteration to a 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 length for this scratch? a. 0.120" c. 0.250" b. 0.180" d. 0.310" 57. Bob the Builder is qualifying to weld using the SMAW process. His test is a 66 coupon that is 0.500" thick. What bend tests should be used to qualify Bob the Builder? a. Two side bends b. One face bend & one root bend or two side bends c. Four side bends. d. Two face bend & two root bend or four side bends 58. The vent on a mechanical piping clamp is used for which of the following reasons? This may have more than one correct answer, select all correct answers. a. Vent area during assembly b. Vent annular area prior to clamp removal c. Place often used to inject sealant in the annular area d. Used as a repad's "weep-hole" to indicate pipe wall has a through wall failure 59. A fillet-weld patch is installed on a 12 NPS pipe (I.D about 12.0"). The patch is 0.375" thick. How close can this patch be to another fillet-welded patch? a. 3.0" c. 8.5" b. 6.0" d. 14.7" 60. An aluminum product transfer line operates at 300 °F and is 600 feet long. During operation how much will the pipe grow? a. 22" c. 42" b. 27" d. 80" 61. A 0.500" thick gasoline line is being altered. What is the maximum allowed height of external reinforcement on these new welds? a. 1/16" c. 5/32" b. 1/8" d. 3/16" 62. Which of the following is not a cause of Microbiologically Induced Corrosion? a. Algae c. Fungi b. Bacteria d. Viruses 63. The minimum thickness of a gate valve can be determined by using the minimum thickness: a. formula in ASME B&PV Section VIII. b. formula in ASME B31.3. c. formula in ASME B&PV Section VIII and multiplying the answer by 1.5. d. formula in ASME B31.3 and multiplying the answer by 1.5. 64. HCL Corrosion normally occurs as: a. dew-point corrosion. d. isolated pitting. b. erosion. e. sub-surface cracking. c. fatigue. 65. A carbon steel caustic system has a 30% concentration of NaOH (caustic). Above what temperature is stress-relieving recommended? a. 59 °F d. Carbon steel is not recommended for this percentage of caustic b. 140 °F c. 220 °F 66. What is the structural minimum thickness for a 12NPS 9% chrome pipe with a design temperature of 300 °F? a. 0.070" d. 0.100" b. 0.080" e. 0.110" c. 0.090" 67. According to B31.3, the wall thickness for a 1.5 NPS carbon steel threaded pipe installed in a Normal Service should be at least: a. Schedule 40. c. Schedule 80. b. Schedule 60. d. Schedule 160. 68. Inspection plans for sulfidation corrosion should be in accordance with: a. API 939-C. c. OSHA 1492. b. API 2217. d. NACE 1776. 69. A pipe alteration is performed using Fully Deoxidized A-106 gr B pipe. Impact testing was done to prove the material is adequate for the minimum design metal temperature. Which of the following set(s) of impact tests are acceptable? All answers are in ft-lbs. This may have more than one correct answer, please select all answers that apply a. 11, 13, 17 d. 10, 13, 14 b. 9, 15, 16 e. 11, 14, 14 c. 12, 12, 21 70. At what pH does a thin iron sulfide layer deposit on the steel and provides some protection against sour-water corrosion? a. > 3.5 pH c. > 5.5 pH b. > 4.5 pH d. < 7.0 pH 71. A pneumatic test with nitrogen is being performed on a piping system. During the test the amount of stored energy is equivalent to 70 lbs of TNT. If during the test, the piping fails by brittle fracture, how far could vessel fragments fly? a. 60 feet d. 1320 feet (quarter mile) b. 140 feet c. 340 feet 72. Without performing impact tests, what is the minimum allowed temperature for the following piping system? Material: A106 gr. C Line Size: 6 NPS Nominal thickness: 0.750" Retirement thickness: 0.500" a. + 30 °F c. 17 °F b. + 15 °F d. 20 °F 73. A pipe with a locally thin area can be repaired with a fillet-weld patch only if: a. the pipe is a P1 or P3 material. b. designed by a professional engineer. c. the piping system is classified as a Class 3. d. the pipe material has a yield strength of less that 40,000 psi. 74. Per PCC-2, when rolling a fillet welded patch to the shape of the pipe's OD, the plate must be stress relieved if the patch's fiber elongation exceeds: a. 0.35%. c. 3.5%. b. 2%. d. 5%. 75. 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? a. Set A c. Set C b. Set B d. Either Set A or B 76. What is the diameter of the bolts that are used for a 6 NPS Class 600 flange? a. 1.00 inch c. 1.25 inch b. 1.125 inch d. 1.375 inch **Questions 77-80 are based on the attached WPS (#237) & PQR (#333)** 77. This PQR is incorrect because: a. the wrong type of bend tests were performed. b. bend test #2 & #4 failed. c. tension test #2 failed. d. there is a math error tension test #2 calculation. e. impact testing should have also been performed. 78. Based on this PQR, what is the maximum base metal thickness range qualified on the WPS? a. 1/16" - 1" c. 3/16-1" b. 1/16" - 2" d. 3/16 - 2" e. 1/4-3/4" 79. This WPS is not qualified because the: a. A# is not supported by the PQR. b. P# is not supported by the PQR. c. welding positions are not supported by the PQR. d. shielding gas is missing on the WPS. 80. This WPS is not qualified because the: a. preheat temperature is not supported by the PQR. b. amp ranges on the WPS are incorrect. c. rod size is missing on the PQR. d. root spacing is missing on the PQR. **SDG** MSTS 11 November 2024