api-570 final exam questions

7/27/2019 API-570 Final Exam Questions

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API 570 Practice exam

The following is a collection of questions made from API-570 syllabus. The answers will be found

in the reference publicationsmentioned in API-570 body of knowledge

This is the "Open Book" portion of the exam. Feel free to use any of the following

1. Determine the MAWP of the following piping system , at the next inspection, based on the followingDesign pressure/temperature

Pipe description

Outside diameter of pipe, D

Thickness determined from Inspection

Observed Corrosion Rate

Next planned inspection

100 psig/100F

NPS 2, Sch.80, A 106 B

2.375

0.190

0.03 inches/year

5 Years

MAWP: _____________

A. 674 psigB. 323 psigC. 125 psigD. Metal loss exceeds the requirements for 5 year inspection interval

2. What is the pressure design thickness of NPS 10, A516 Gr.65 Type 22 pipe that operate at 1200 psig/750FA. 0.432B. 0.46C. 0.928D. Not enough information given

3. A leak test is an alternative to inspection of buried piping. What is the minimum liquid pressure to adequately conductthis test?

A. 1 1/2 times the MAWPB. 1 1/4 times the MAWPC. 10% greater than MAWPD. Actual MAWP

4. For a single wall material thickness, over 0.375 through 0.50, what is the hole type designation for a source sidepenetrameter

A. 15B. 17C. 20D. 25

5. Give the corresponding P number for SA 414 Gr.A materialA. 1B. 2C. 3D. 11B

6. On a class 1500 NPS 4 blind flange, what is the minimum thickness permitted?A. 1.12B. 1.88C. 2.12D. 2.88

7. For 1 1/4 thick carbon steel, what is the recommended preheat temperature?A. 300FB. 235FC. 175FD. None

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8. Determine the MAWP of the following piping system , at the next inspection, based on the following

Design pressure/temperature

Pipe description





100 psig/100F

NPS 20, Sch. std, A 106 B

20

0.280

0.02 inches/year

5 Years

MAWP= ______________A. 160 psigB. 550 psigC. 723 psigD. 125 psig

9. What is the inspection interval for buried piping without cathodic protection, the soil resistivity is 6,500 ohm-cm?A. 10 yearsB. 15 yearsC. 5 yearsD. whenever a leak is suspected

10. What is the maximum length allowed for individual slag trapped in a weld in a Severe Cyclic Conditions pipingsystem?

A. >TW X 3B. TW / 3C. 12TD. 3/23

11. What is the design thickness of NPS 2 , SA106 Gr.B pipe that operates at 25 psi / 200FA. 0.275B. 0.100C. 0.002D. not enough information given

12. With respect to Category D service, what is the maximum allowable undercut for a branch connection?A. Zero (no evident imperfections)B. 1/32C.

1 mm

D. Both B and C13. What is the test pressure of a metallic piping system whose design temperature is above the test temperature using

the following conditions? NPS 6, SA106 Gr.B, 100 psi / 800FA. 150 psiB. 450 psiC. 278 psiD. Test temperature verses design temperatures are not different

14. Determine the MAWP of the following piping system, at the next inspection, based on the followingDesign pressure/temperature

Pipe description





100 psig/750F

NPS 6, A285 C EFW, Straight Seam(No radiography)

6 5/8

0.280

0.01 inches/year

5 Years

MAWP= ______________

A. 522 psigB. 487 psigC. 878 psigD. 125 psig

15. Impact testing of each form of material for any specification shall be done using procedures and apparatus inaccordance with



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A. ASTM A 370B. ASME Section VC. API 570D. AWS D 1.5

16. In the AWS D 5.1, what is the designation for cellulose DCEP electrode?A. E 7018B. E 7016C. E 6011D. E 6010

17. With respect to a Class 400, NPS 12 slip on raised face flange, whose edges of the gasket do not extend to the bolt,what is the outside diameter of the gasket?

A. 12.75B. 15.00C. 16.50D. 18.00

18. The base metal is P.No.8, the weld metal is A. No.8-9, and the wall thickness is 1, what is the hold time for heattreatment

A. NoneB. 1 hourC. 2 hoursD. hour for each 1 thickness

19. On the regularly furnished Class 300 raised face flange, what is the height of the raised face?A. 0.06B. 0.09C. 0.19D. 0.25

20. During a welder qualification test on 3/8 plate in the horizontal position, how many guided bends are required?A. 6 side bendsB. 2 nick breaksC. 1 face and 1 root bendsD. 4 tensile specimens

21. When inspecting a Class 3 system, what percentage of all suspect areas and areas of damaged insulation should beexamined?

A. 10%B. 33%C.

50%D. 100%

22. A welder who tests on a thick plate, groove weld in the 3G position is also qualified to weld in which other plateposition?

A. Vertical onlyB. Flat and horizontalC. FlatD. All plate positions

23. After hot bending and forming, heat treatment is required for which P numbers?A. 3,4,5, 6 and 10AB. 1, 2 and 7C. 11ASG1 and 11ASG2D. 1,2,8,9A and 98

24. A piping system that operates at a design pressure of 100 psi at 950 F was originally built from NPS 20 EFW (100%radiographed), wall, A-516 Grade 70, A-671 material. During the last Inspection, the thickness was determined tobe 0.370 inches. The records indicated the corrosion rate to be 0.009 inches per year. What is MAWP if the nextinspection is planned in 5 years?

A. 126 psiB. 285.17 psiC. 98.23 psiD. Not enough information given

25. Can the inspection interval of the system in question 24 be increased to 8 years?A. NoB. YesC. If the system was insulated, the interval can be extendedD. Not enough information given



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26. What the MAWP is recalculated, the wall thickness used shall be the actual thickness minus:A. The estimated corrosion loss before the date of the next inspectionB. Twice the estimated corrosion loss before the date of the next inspectionC. Three times the estimated corrosion loss before the date of the next inspectionD. The estimated corrosion loss before the date of the next inspection

27. The base metal is P No.1, the weld metal is A No.1, and the wall thickness is 7/8. What is the holding time at 1100-1200F for heat treatment

A. 1 hourB. 2 hoursC. 3 hoursD. Procedure is not required for this thickness

28. What is the required thickness of straight run pipe subject to internal pressure only, based on the followingconditions: NPS 14, SA 285 Gr.C, EFW Spiral seam (No radiography), operating at 216 psi / 378F

A. 0.11B. 1.1C. 0.06D. Not enough information given

29. The radiograph of a Normal Fluid service piping weld revealed a crack. What is the acceptable crack length if the pipewall was 0.375?

A. NoneB. T/3C. 3/16"D. Cracks will not show on radiographs

30. Geometric unsharpness of the radiograph of a component under 2" th1ck shall not exceed _________A. 0.020"B. 0.030"C. 0.040"D. 0.050"

31. What is the maximum Brinell hardness of base metal P-6?A. 241B. 270C. 281D. not specified

32. What is the minimum holding time of SA-106 Grade B, 1 inch thick material?A. 2.4 hoursB.

2 hoursC. 1 hour

D. not specified33. What is the working pressure of a 150 Ib. flange, SA 350 Gr.LF6 CL 1, used at 400F?

A. 230 psigB. 200 psigC. 170 psigD. 140 psig

34. What is the minimum class flange that can be used if the material is SA 351 Gr.C F8C, temperature 950F andworking pressure is 1930 psig

A. 800B. 900C. 1500D. This material can not be used at this temperature

35. The preheat zone shall extend beyond each edge of a pipe weldA. 1B. 2C. 2TD. 3T

36. What is the root face limitation as listed on the attached WPS and PQRA. 3/32B. 1/8C. No limitD. Not designated

37. If the supporting PQR is used, are the P-nos correct on the attached WPS?A. Yes



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B. NoC. Could be if properly preheatedD. Not enough information

38. Is the thickness range on the WPS supported by the PQR?A. YesB. NoC. Re qualification is required by API 570D. Re qualification is required by ASME Section V

39. Is the attached PQR properly qualified?A. No, because RT is not allowed during PQR qualificationB. No, because there are not enough tensile testsC. No, because peening is allowed by ASME B31.3D. Yes

40. What should have been the correct number and type of guide bends on the PQR?A. 6 side bendsB. 2 face and 2 root bendsC. 1 side, 1 face and 1 root bendD. No side bends required



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The reminder of the exam is Closed Book.

The use of reference publication is not permitted.

41. According to API 570, a(n) ___________ is a person who assists the inspector by performing specific NDE testing.A. NDE technicianB. Inspector assistantC. Level II inspectorD. Examiner

42. More than one contractor, manufacturer or installer may simultaneously qualify a welder. In such case, eachparticipating organization shall be represented by ______________ during the test.A. A certified welding inspectorB. A responsible employeeC. The welders supervisorD. A welding engineer

43. Which of the following best describes API 574?A. codeB. StandardC. specificationD. Recommended practice

44. The potential for personnel exposure is deemed to be significant in which fluid service?A. Category M fluid serviceB. High pressure fluid serviceC. Normal fluid serviceD. Category B fluid service

45. When an injection point circuit for the purpose of inspection is designated, the recommended up stream limit of theinjection point circuit shall be the greater of ___________ ?

A. minimum 12 inchesB. maximum 12 inchesC. three pipe diametersD. both A and C

46.___________ can cause flame detectors used to indicate a furnace or boiler fire to give false indications on controlpanels.

A. Welding or related repairs on pipingB. Piping alterations in the shopC. Ultrasonic inspectionD. Radiographic inspection

47. After application of a non destructive evaluation technique, any resulting evidence is commonly referred to as ______A. A crackB. porosityC. a leakD. an indication

48. API 570 applies to piping systems for process fluids such as:A. FirewaterB. Plumbing, sanitary sewers and storm sewersC. Raw, intermediate, and finished products.D. Piping systems on trucks, ships and barges

49. Which of the following applies to socket welds in piping systems?A. Should be avoidedB.

Should be used in all welded pipingC. Should be welded using SAW only

D. Should be avoided where crevice corrosion may occur50. Each piece of magnetizing equipment shall be calibrated _________

A. at the beginning of each shiftB. at least once a year or whenever the equipment has been subject to major electrical repairC. whenever the technician feels like itD. at least once every 90 days

51. An individual who holds an engineering degree is automatically qualified as __________.A. an authorized piping inspectorB. a piping InspectorC. a NDE Level II or III in any techniqueD. None of the above



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52. What is the definition of normalizing?

A. Rapid cooling of a heated metalB. Heating an alloy to a suitable temperature, holding that temperature long enough to allow constituents to

enter into solid solution and then cooling ~ rapidly enough to hold the constituents.C. Process where a ferrous metal is heated to a suitable temperature above the transformation range and is

subsequently cooled in still air at room temperature.D. Heating to and holding at a suitable temperature and then cooling at a suitable rate to reduce hardness,

improve machinability, facilitate cold working, etc.

53. What does the acronym MAWP refer to?A. Maximum internal pressure permitted in the piping systemB. Minimum internal pressure permitted in the piping systemC. Maximum external pressure permitted in the piping systemD. Maximum external stress permitted in the piping system

54. Penrtrameters (IQls) shall either be _________or _______ and shall be manufactured and identified in accordancewith ASME.

A. black-type white-typeB. step wedge calibration blockC. hole-type wire-typeD. pica-type elite-type

55. When environmental or operating conditions produce snow and ice loads, these are considered to be ___________.A. Dead loadsB. live loadsC. environmental loadsD. structural loads

56. The downstream limit of the injection point circuit is the second change in flow direction past the injection point or:A. 25 feet beyond the first changeB. 50 feet beyond the first changeC. 100 feet, if the pipe is straight runD. No downstream requirement

57. Appropriate permanent and progressive records on each piping system shall include ___________.A. all original construction dataB. all jurisdictional requirementsC. original heat and batch numbersD. system service; classification; identification numbers

58.Piping subject to CUI includes piping insulated for personnel protection, especially:A. plastic piping

B. glass lined pipingC. carbon steel piping systemsD. carbon steel piping systems operating between 25F-250F

59. A leak test was performed on a buried piping system. The system was re pressured to 125 psi four hours into thetest. Sometime during the final four hours, the gauge fell 5

A. The piping system failed.B. The piping system passedC. The test must be repeatedD. The piping system must be visually inspected

60. What is the most common use for a globe valve?A. Prevent back flowB. Allow full flowC. Stop all flowD. Regulate fluid flow

61. What is the minimum lifting power of an AC electromagnetic yoke used in magnetic particle inspection?A. 40 pounds lifting power at the maximum pole spacingB. 10 pounds lifting power at the maximum pole spacingC. 10 amps lifting power at the maximum pole spacingD. 30 pounds lifting power at the minimum pole spacing

62. Excessive cyclic stresses that are well below the static yield strength of the material result in _________.A. material failureB. fatigue crackingC. failure crackingD. creep cracking



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63. A welder may be qualified by AT in any welding process except for which of the following?A. GMAW (short circuiting mode)B. GMAW (spray arc mode)C. FCAWD. SMAW

64. Austenitic stainless steel piping systems operating between 150F-400F are susceptible to:A. temper embrittlementB. chloride stress corrosion crackingC. CUID. Both B and C

65. What classification does the majority of unit process piping fall in to?A. Class 3B. Class 2C. Class 1D. Owner/user designated system

66._______ provides general requirements and detailed assessment procedures for specific types of degradation that arereferenced in API 570.

A. API 598B. API 653C. API RP 579D. ASME 816.5

67. Welding procedures qualified by ____________ may be used, subject to the specific approval of the inspectorA. othersB. the employerC. the use of AWS pre qualified, D1.1 type proceduresD. the use of API 1104 qualified procedures

68. A weld is changed from multi pass per side to single pass per side. How does this effect the PWHT limitation?A. This limitation does not apply when a WPS is qualified with a PWHT above the upper transformation

temperatureB. This limitation does not apply when a WPS is qualified with a PWHT below the upper transformation

temperatureC. The PWHT is not a considerationD. The PWHT must be performed per ASME IX and time increased byone

69. Besides ultrasonic instruments, what other method can be used to determine thickness measurements?A. AETB.

ETC. MT

D. RT70. Which of the following methods can be used to join cast iron pipe?

A. WeldingB. CompressionC. Epoxy resinD. Bell and spigot

71. Buried piping inspected periodically by excavation shall be inspected in lengths of:A. 3 feet -5. feetB. 6 feet -8 feet.C. Any length as long as It IS Inspected full circumference.D. Any length as long as it is inspected 180 circumference.

72. In a piping circuit, which of the following does not routinely have thickness measurements taken?A. ValvesB. Straight Run PipeC. FittingsD. Dead legs

73. What is the maximum measurement for open defects in the weld or heat affect zone for a guided bend specimen?A. 1/16"B. 1/8"C. 3/16"D. No open defects are allowed

74. What is a thermocouple pyrometer?A. A device used to check the heat treatment temperature, usually connected by capacitor discharge weldingB. A device taped to the pipe that will record temperature variations



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C. A flammable material that, when ignited, will create enough heat to stress relieve pipingD. A vibration device that generates heat through friction producing a stress relieved weldment

75. What is the acceptable method to temporarily repair a longitudinal crack in an existing piping system?A. Installing a full encirclement welded split sleeveB. Welding over the crackC. Welding a box over the cracked areaD. Using a full encirclement welded spilt sleeve, with the approval of the piping engineer

76. Erosion of the piping system usually occurs at:A. ElbowsB. Along straight run pipeC. Upstream of pump dischargesD. Any low-velocity and low-turbulence areas

77. An operator notice a pipe off its support, what should be done?A. Ignore the situationB. Report the situation to engineering or inspection personnelC. Keep a record of the situation for future referenceD. Contact maintenance personnel for immediate repair

78. When heat treating welded joints between dissimilar ferritic metals, the temperature range shall be for which metal?E. The one with the higher temperature rangeF. The one with the lower temperature rangeG. The average of both materialsH. Either one may be used

79. Bolts should extend ______ during the installation of flanged connections.A. two threads past their nutsB. completely through their nutsC. only half way through their nutsD. at least 0.5 inches (12.7 mm) past their nuts

80. When a welder has not welded with a process during a period of _______ , his qualifications for that process shallexpire

A. 3 months or moreB. 6 months or moreC. 9 months or moreD. 12 months or more

81. Rerating piping systems may be allowed only if the calculations are performed by_________A. the piping engineer or the inspectorB. the plant managerC. an outside engineering firmD. a third party inspection organization

82. Temperatures above _____________ can damage transducers not equipped with delay line material.A. There is no limit to temperatureB. manufacturer's specificationC. 280 psiD. 1,000 psi

83. Where should the numbers be placed on a radiograph?A. Under the filmB. On the material being radiographedC. Under the material being radiographedD. On the film source pack

84. Radiographic profile techniques are preferred over ultrasonic thickness measuring instruments for pipe diameters of:A. NPS 1 'and overB. NPS 2 and overC. NPS 1 and underD. NPS 2 and under

85. A _________ pipe has the highest potential of resulting in an immediate emergency if a leak were to occur.A. Class 3B. Class 2C. Class 1D. Owner/user designated system

86. A WPS shall have the ____________ referencedA. welder



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B. PQRC. NACED. PDQ

87. What is the most common method used to manufacture tubing?A. RivetedB. Seamlessly drawnC. Wire drawnD. Forged

88. A piping inspector employed by the owner operator shall have ___________A. an API 653 certificationB. an AWS certificationC. an API 510 certificationD. not less than 10 years experience dealing with piping

89. Repair materials shall be verified for conformance to the applicable code and shall be compatible with the originalmaterial by the ____________.

A. inspectorB. piping engineerC. repair organizationD. the purchasing department

90. The letter "B" is placed on radiographic film holder for what reason?A. To determine if back scatter radiation is exposing the filmB. To show the distance from the source of radiation to the weldC. To function as a location marker for the radiographD. To designate whether the penetrameter is on the film side or the back side

91. A visual examination of performance test coupons shall ___________.A. show complete joint penetration and complete fusion of weld metal and base metalB. show no more than 1/3t inadequate penetrationC. show no more than 1/3t non fusionD. be allowed one 5/32" crater crack

92. Piping systems that are not located in high activity areas and do not significantly vaporize are designated as _____.A. Class 3B. Class 2C. Class 1D. Owner/user designated system

93.Of the following examples, which one may cause a leak in a threaded joint?A. Back welding the fitting

B. Lack of thread lubricantC. Under pressuring the partD. Changing the direction of flow in the piping system

94. Penetrameters are normally placed on the __________ side of the part being examined.A. sourceB. filmC. weldD. reverse

95. What is the maximum thickness measurement inspection interval for an injection point?A. 3 yearsB. 5 yearsC. 10 yearsD. By Class

96. Exemptions for preheating and post weld heat treatment must be approved by the __________.A. piping engineerB. inspectorC. applicable standard, API 570D. repair procedure.

97. A welder qualified to weld in accordance with one qualified WPS is also qualified to weld __________.A. using the same welding process within the limits of the essential variablesB. any other qualified weld procedureC. using a different welding process of a qualified weld procedureD. any WPS developed and tested by the welder's employer

98. The formula t = PD/2SE computes the __________.



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A. Minimum required piping thicknessB. maximum piping thicknessC. minimum piping thicknessD. average piping thickness

99. What document may be used as a guide when examiners are being qualified by their employer?A. ASME Section IXB. ASM E Section VC. ASNT SNT- TC-1AD. API 570

100. The minimum allowable thickness of a piping component shall be based on __________.A. pressure, mechanical and structural considerationsB. previous experience of the ownerC. corrosiveness of the product onlyD. availability of piping materials

101. What is the prescribed alignment for the inside surfaces of circumferential welds to be groove welded?A. 1/16"B. 1/32"C. Within the dimensional limits in the WPSD. The fabricator's discretion

102. Why should a leaking threaded joint not be tightened while the system is in service?A. The craftsman should not be near the threaded connectionB. Rust or corrosion might be holding the pressureC. The joint might be unscrewedD. A crack in a thread root might fail

103. The repair organization shall maintain records of welding procedures and welder qualifications and make therecords available to the inspector ___________.

A. prior to the start of weldingB. any time during weldingC. after completion of weldingD. when the repair organization releases the information

104. A transverse crack was discovered in the root pass of a completed weld on the outside of a Category D Fluid Servicepiping system during a PT test. Which of the following," statements is most accurate?

A. The weld is acceptableB. The PT test should be repeatedC. The welder should be requalifiedD.

The PT test will not show this type of discontinuity from the outside

105. The transmitted film density through the radiographic image of the body of the appropriate hole penetrameter andthe area of interest shall be ______ minimum for radiographs made with a gamma ray source.

A. 1.8B. 2.0C. 2.2D. 2.6

106. Care should be taken not to ______ during a pressure test.A. allow any inert gas into the systemB. use water in the systemC. over-pressure the systemD. under-pressure the system

107. In evaluating blisters and laminations in piping, assessments should be performed in accordance with ______.A. API RP 579, Section 7B. API RP 2207, Section 2C. API 598, Section 1D. ASME 816.5

108. An area defined by a circle having a diameter not greater than 2 inches for a line diameter not exceeding 10 inches,in which thickness readings may be averaged is

A. TMLB. WFMTC. Test pointD. Averaging point

109. The liquid penetrant examination method is an effective means for detecting ________.A. internal discontinuities of a weldB. surface discontinuities of a weld



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C. both Internal and surface discontinuities of a weldD. subsurface discontinuities of a weld

110. To evaluate the effects of fire damage, an assessment should be performed in accordance with________.A. API RP 579, Section 11B. API RP 2207 Section 2C. API 598, Section 1D. ASME 816.5

111. The repair organization shall use welders and welding operators qualified in accordance with the code to which thepiping was built or alternatively ___________.

A. ASME B 31.3B. ASME Section VC. AWS D 1.1D. API 1104

112. When an entire piping assembly is to be heat treated, but it will not fit into the furnace, what action should betaken?

A. Heat treat in more than one heat, with a 1 overlapB. Heat treat as much as possible and hardness test the untreated areaC. Radiograph the untreated areaD. MT the untreated area

113. What is the maximum allowable deviation for the ammeter on each piece of magnetizing equipment?A. 30%B. 10%C. 20%D. 15%

114. A qualified welder may seal weld a threaded joint if __________.A. the joint is leakingB. the joint has straight threads onlyC. the joint has tapered threads onlyD. all exposed threads are covered

115. Actively engaged as an authorized piping inspector shall be defined as a minimum of ___________ time spentperforming inspection activities.

A. 20%B. 30%C. 40%D. 50%

116. An inspector is evaluating a radiograph, a light image of a "B" appears on a darker background of the radiograph,the ___________.

A. radiograph shall be considered unacceptableB. radiograph should not be rejectedC. "B" is for identification of the welderD. "B" is for identification of the weld

117. All piping system repair and alteration welding shall be done in accordance with:A. ASME BPV IXB. ASME B31.GC. API 570D. The code to which the system was built.

118. A piping system started with a wall thickness of 0.375 inches. Over a five year period the wall thickness is now0.1. What is the long term corrosion rate?

A. 0.055 inches per yearB. 0.005 inches per yearC. 550 Inches per yearD. Not enough information given

119. Given the above information, what is the short term corrosion rate of the above piping system?A. 0.055 inches per yearB. 0.005 inches per yearC. 550 Inches per yearD. Not enough information given

120. When testing cast iron pipe which of the following methods should not be used?A. Radiographic testB. Leak testC. Ultrasonic test



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D. Hammer test121. Lower levels of soil resistivity are:

A. Less corrosive than higher resistivity soils.B. More corrosive than higher resistivity soilsC. Has no effect on corrosion.D. More desirable because of increased electrolyte.

122. When may welding not be performed?A. If the weld area is frosted or wetB. If the weld area is above 120 FC. If the weld area is in an inert atmosphereD. If the weld area is not in direct sunlight

123. The minimum required pipe wall thickness or retirement thickness shall be based on pressure, mechanical andstructural considerations using the appropriate design formulae and __________.

A. code allowable stressB. assumption stressC. nil-weight ductility stressD. CTOD stress

124. The weld ripples of reinforcement of butt-welded joints shall be ________ before radiography.A. removedB. ground flush, with grinding direction parallel to the weldC. ground flush, with grinding direction perpendicular to the weldD. removed if irregularities mask discontinuities

125. In lieu of the required heat treatment after welding, what may be used as an alternative?A. Normalizing/annealingB. QuenchingC. Air HardeningD. Strain Harmonics

126. A piping system has a corrosion rate of 0.074 inches per year, the actual wall thickness is 0.370 inches and theminimum required thickness is 0.1 inch. What is the remaining life?

A. 36.48 yearsB. 364.8 yearsC. 3.6 yearsD. 3.6 months

127. The inspector shall approve all repair and alteration work at designated times, referred to as ___________.A.

hold pointsB. work stop points

C. inspection delay pointsD. inspector's discretion

128. Who is authorized to make a tack weld?A. A qualified welderB. A helperC. A fitterD. The welding foreman

129. The acronym CUI refers to ___________.A. Corrosion Under InsulationB. Cold Under-ground In-service pipingC. Corrosion Under Inside flowD. Carpet Under Infra-structure

130. API 570 was developed to provide _____________ for the inspection of in-service process piping.A. recommendationsB. suggestionsC. general guidelinesD. an industry standard

131. During a MT examination, __________ shall be performed on each area.A. 100% coverage at the required sensitivityB. a calibration of each piece of magnetizing equipmentC. at least three separate examinationsD. prod spacing of at least

132. An API authorized piping inspector certificate is valid for _____ years from its date of issuanceA. 3



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B. 4C. 5D. unlimited

133. Peening of the weld is prohibited on what part of the weld?A. Root and final passB. Intermediate passesC. Along the toe of the weldD. Within 1" of the weld area

134. The outside diameter of piping in high-temperature service, about 800F, should be measured to check for _______A. creepB. diameter enlargementC. swellingD. internal product build-up

135. A specialized valve generally used in erosive or high-temperature service is a __________ valveA. swing checkB. slideC. plugD. globe

136. Cracks caused by vibration, thermal cycling, thermal expansion problems and environmental cracking areconsidered ______________.

A. in-service cracksB. material cracksC. delayed cracksD. HAZ cracks

137. Who has the responsibility for qualifying welding procedures?A. Each employerB. Each subcontractorC. Each welderD. Each contractor

138. A DC yoke shall have a lifting power of at least __________A. 5 lbs.B. 8 lbs.C. 10 lbs.D. 40 lbs.

139.

API 570 covers the inspection of _________.A. new constructionB. new tank constructionC. In-service pipingD. In-service vessels

140. Hammer testing of piping is a common practice. However, which of the following should never be hammered?A. Cast iron pipingB. Caustic pipingC. All welded pipingD. Both A and B

141. Aboveground piping is subject to atmospheric corrosion. What is buried piping subject to?A. ErosionB. Anodic reactionC. Soil electrolytesD. Soil corrosion

142. When can welding procedures qualified by other than the employer be used?A. When there is specific approval of the inspectorB. When the job contract gives authorizationC. When the procedure is used only one timeD. When the production weld is radiographed

143. The type of joints generally limited to piping in non critical service NPS 2 and smaller is ___________.A. butt weldedB. brazedC. threadedD. clamped



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144. Welding repairs of cracks that occurred in-service should not be attempted without prior consultation with the______

A. piping engineerB. inspector onlyC. plant managerD. welding foreman

145. The preferred medium for pneumatic testing of small lines or systems is __________A. airB. waterC. inert gasD. hydrogen

146. Without the benefit of an impact test, what is the minimum operating temperature for A-106 Grade B material usedin a Category D Fluid Service?

A. -29FB. -20CC. -20FD. 0F

147. The valve used to automatically prevent back flow is ___________ valve.A. gateB. slideC. globeD. ball check

148. All proposed methods of design, execution, materials, welding procedures, examination and testing must beapproved by the __________.

A. inspector or piping engineerB. inspector onlyC. plant managerD. new construction contracts

149. In piping systems, the most easily detected problem during operation is _____________.A. pipe wall thicknessB. pipe wall thinnessC. pipe coating conditionD. leaks

150. The three well-known methods of determining soil resistivity are, soil bar, soil box and _________.A. A-C BridgeB.

six pin methodC. holiday pipe survey

D. Wenner (4-pin) method



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api-570 final exam questions

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