API 575

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SamG
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266226
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API 575
Updated:
2014-03-12 22:04:22
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API
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API
Description:
API 653 Prep Course
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  1. The generic definition of atmospheric pressure is pressures up to:
    a) 0.05 psig
    b) 0.5 psig
    c) 2.5 psig
    d) 15 psig
    c) 2.5 psig
  2. The inspection guidelines of API 572 should be followed when the operating pressure exceeds:
    a) 0.05 psig
    b) 0.5 psig
    c) 2.5 psig
    d) 15 psig
    d) 15 psig
  3. As the product temperatures increases, the product vapor pressure:
    a) decreases
    b) decreases only if specific gravity is less than 1.0
    c) increases
    d) increases only if specific gravity is less than 1.0
    c) increases
  4. A pressure-vacuum vent is installed on a tank.  The PV vent will ensure that the inside pressure or inside vacuum does not exceed.
    a) 0.0 psig
    b) a few ounces of pressure
    c) 2.5 psig
    d) 15 ounces of pressure.
    e) 5.0 - 25 psig
    b) a few ounces of pressure
  5. While in operation, which tank type roof is supported by internal members?
    a) Cone roof
    b) Dome roof
    c) Floating roof
    d) Umbrella
    a) Cone roof
  6. Fixed roof tanks are often self supporting when tank diameter does not exceed:
    a) 20 ft
    b) 40 ft
    c) 60 ft
    d) 100 ft
    c)  60 ft
  7. Which of the following is not an advantage of a geodesic dome roof:
    a) Low cost roof
    b) Keeps Snow and rain off of an internal floating roof
    c) Can be used on any size of tank
    a) Low cost roof
  8. What is the primary reason for using a flat roof instead of a cone roof tank?
    a) Less affected by sever weather
    b) Less expensive
    c) Less maintenance issues
    d) Minimizes vapor emissions
    d) Minimizes vapor emissions
  9. Which type of external floating-roof is the LEAST susceptible to sinking?
    a) Double-Deck
    b) Pan
    c) Pontoon
    a) Double-Deck
  10. Which type of external floating-roof is the MOST susceptible to sinking?
    a) Double-Deck
    b) Pan
    c) Pontoon
    b) Pan
  11. Which is the most common type of floating-roof Seal?
    a) Foam Log
    b) Mechanical Shoe
    c) Wiper
    b) Mechanical Shoe
  12. Why are internal floating roofs sometimes used?
    a) Lowers construction costs
    b) Reduces vapor loss
    c) Minimizes effects of weather (rain & snow)
    d) Either reduces vapor loss or minimizes effects of weather (rain & snow)
    d) Either reduces vapor loss or minimizes effects of weather (rain & snow)
  13. Which of the following floating roofs is normally not constructed from steel?
    a) Double-Deck
    b) Internal on floats
    c) Pan
    d) Pontoon
    b) Internal on floats
  14. Low Pressure storage tanks are those with a design pressure from:
    a) 0.0 - 0.05 psig
    b) 0.05 - 2.5 psig
    c) 2.5 - 15 psig
    d) 5.0 - 25 psig
    c) 2.5 - 15 psig
  15. Low Pressure storage tanks are normally used for products that have a:
    a) high vapor pressure
    b) low vapor pressure
    c) high specific gravity
    d) low specific gravity
    a) high vapor pressure
  16. API 620 Appendix R provides design results for refrigerated tanks with design temperatures between:
    a) -60 to 40F
    b) -50 to 32F
    c) -100 to 0F
    d) -270 to -60F
    a) -60 to 40F
  17. API 620 Appendix Q provides design results for refrigerated tanks with design temperatures between:
    a) -60 to 40F
    b) -50 to 32F
    c) -100 to 0F
    d) -270 to -60F
    d) -270 to -60F
  18. Hemispheroidal, spheroidal, and noded spheroidal tanks are commonly used when the design pressure exceeds:
    a) 2.5 psig
    b) 5.0 psig
    c) 10.0 psig
    d) 125.0 psig
    b) 5.0 psig
  19. Which of the following codes is not a tank inspection code:
    a) API RP 12R1
    b) API 653
    c) STI SP001
    d) UL-142
    d) UL-142
  20. A tank pad is installed with cinder.  What chemical in the cinders can cause bottom-side corrosion when the pad gets wet?
    a) Chlorides
    b) Iron
    c) Kryptonite
    d) Silicon
    e) Sulfur
    e) Sulfur
  21. Which of the following is NOT a common cause of bottom side corrosion on a tank floor?
    a) Clay or wood left in sand pad
    b) Faulty installation of san pad
    c) Improperly sealed ring wall
    d) Leaking product that is corrosive
    e) Operating temperatures below 200F
    f) Poor drainage in tank area
    e) Operating temperatures below 200F
  22. In order to prevent bottom side corrosion which of the following is not recommended?
    a) Asphalt-impregnated fiberboard on top of ring-wall
    b) Operating a tank at temperatures above 200F
    c) Install sand pad using specified ASTM materials that is 3-4" thick
    d) Installing tank foundation 12" above grade of area inside tank dike
    a) Asphalt-impregnated fiberboard on top of ring-wall
  23. What are two common causes of sever external corrosion at the bottom of the lower shell course?
    a) _________________________
    b) _________________________
    • a) settlement so that solid contacts shell
    • b) CUI - water wicking up
  24. What are three types of atmospheres that can cause external atmospheric corrosion?
    a) _________________________
    b) _________________________
    c) _________________________
    • a) Sulfurous
    • b) Acidic
    • c) Marine Atmosphere
  25. Concentration cell corrosion may occur in the many niches of:
    a) Cone roof tanks
    b) internal floating roof tanks
    c) low-pressure tanks
    d) riveted tanks
    e) small diameter tanks
    d) riveted tanks
  26. Most tanks are made from which metallurgy(s)
    a) Carbon Steel
    b) Chromes
    c) Carbon Steel or Chromes
    d) Kryptonite
    e) Austenitic Stainless Steel
    a) Carbon Steel
  27. What are three common vapors that cause corrosion in a tank's vapor space?
    a) _________________________
    b) _________________________
    c) _________________________
  28. Generally in the liquid portion of a tank, internal corrosion is worse at the:
    a) bottom of the tank
    b) top of the liquid
    c) welds
    a) bottom of the tank
  29. Which of the following tank products does not cause stress corrosion cracking?
    a) Benzene
    b) Caustic
    c) DEA
    d) Ethanol
    a) Benzene
  30. Occasionally a tank will be built with alloy materials.  Which of the following is a common reason for selecting alloys to build a tank?
    a) High design temperature
    b) Increased strength
    c) Lower Cost
    d) Maintain product purity
    d) Maintain product purity
  31. Stress Corrosion cracking of austenitic stainless steels can occur in the presence of:
    a) acids
    b) chlorides
    c) hydrocarbons
    d) sulfides
    b) chlorides
  32. Horizontal uninsulated cylindrical tanks can sometimes experience accelerated external corrosion on:
    a) heads
    b) longitudinal welds
    c) nozzles
    d) saddle to tank interface
    e) shell to roof weld.
    d) saddle to tank interface
  33. What type of tank failure has occurred in the past that results in a sudden and complete loss of product?
    a) Brittle Failure
    b) Failure at extensive deep pitting
    c) Failure at a localized thin area
    d) Thermal Fatigue
    a) Brittle Failure
  34. Which tank weld is most likely to have a leak that is the result of a weld defect?
    a) Annular plate butt welds
    b) Bottom Fillet welds
    c) Horizontal shell welds
    d) Vertical shell welds
    b) Bottom Fillet welds
  35. In which of the following welds are cracks MOST likely to occur?
    a) Bottom fillet welds
    b) Bottom to shell weld
    c) Horizontal shell welds
    d) Vertical shell welds
    b) Bottom to shell weld
  36. In which of the following welds are cracks LEAST likely to occur?
    a) Around rivet holes
    b) Bracket welds
    c) Nozzle welds
    d) Roof fillet welds
    d) Roof fillet welds
  37. What weld is most susceptible to cracking in a hot tank
    a) Bottom fillet welds
    b) Bottom to shell weld
    c) Horizontal shell welds
    d) Roof to shell weld
    e) Vertical shell welds
    b) Bottom to shell weld
  38. A tank experiences excessive uniform tank settlement.  Which area of the tank is most likely to be over-stressed?
    a) Nozzles
    b) Horizontal shell weld
    c) Roof to shell weld
    d) Vertical shell weld
    a) Nozzles
  39. Which of the following is not a common cause of tank settlement?
    a) Frequent freezing and thawing
    b) High tides in tidal areas
    c) Marshy areas
    d) Venus and Mars are aligned with a full moon.
    d) Venus and Mars are aligned with a full moon.
  40. Pressure vacuum vents and flame arrestors can fail to operate for a variety of reasons.  Which of the following is not a cause?
    a) Deposits by birds or inserts (poop, mud, etc.)
    b) Corrosion between moving parts
    c) Fouled
    d) Ice in cold climates
    e) Product specific gravity is increased
    e) Product specific gravity is increased
  41. A plugged floating roof drain:
    a)  can cause the roof to sink.
    b) can cause excessive tank settlement
    c) will significantly increase the stress in the shell
    d) will increase the water in the bottom of the tank
    a)  can cause the roof to sink.
  42. The inspection checklist listed in API 653 Appendix C are:
    a) mandatory for all tanks
    b) mandatory only on low-pressure storage tanks
    c) considered a "memory jogger" for the inspector
    c) considered a "memory jogger" for the inspector
  43. Which of the following can be used to determine the corrosion rate of the tank bottom?
    a) Corrosion rate from tanks in similar service
    b) Corrosion rate from an API or NACE document
    c) Corrosion rate from a corrosion probe or coupon place inside the tank
    d) Corrosion engineer's estimated corrosion rate
    a) Corrosion rate from tanks in similar service
  44. Which tank component normally controls the tank's internal interval?
    a) Bottom
    b) Nozzles
    c) Roof
    d) Shell
    a) Bottom
  45. Similar Service is being used to determine the soil-side corrosion rate for a tank floor.  Which of the following would best determine the soil-side corrosion rate?
    a) Use the soil-side corrosion rate for a tank with exactly the same product.
    b) Use a average soil-side corrosion rate from several tanks with similar product.
    c) Use the soil-side corrosion rate for a tank build at exactly the same time period with the same pad materials with a relatively close temperature.
    c) Use the soil-side corrosion rate for a tank build at exactly the same time period with the same pad materials with a relatively close temperature.
  46. Bottom side and top side corrosion rates should be determined independently.  Soil-side corrosion on a tank bottom can vary from negligible up to rates approaching:
    a) 5 mils per year
    b) 10 mils per year
    c) 15 mils per year
    d) 20 mils per year
    d) 20 mils per year
  47. What is one common component in BS&W (Bottom sediment & water) that increases its corrosiveness?
    a) Hydrogen
    b) Lead
    c) Mercury
    d) Pepper
    e) Salt
    f) Sugar
    g) Sulfur
    e) Salt
  48. Corrosion rate on a tank bottom will increase if the:
    a)  fill height is increased
    b) operating temperature decreases
    c) operating temperature increases
    d) tank service is changed to a product with a lower specific gravity.
    e) tank service is changed to a product with a higher specific gravity.
    c) operating temperature increases
  49. External CP should be:
    a) installed on all new tanks
    b) installed on all tanks that are build on a sand pad
    c) installed per API 2015
    d) installed per API 651
    e) checked per NACE CP-005
    d) installed per API 651
  50. Which document provides additional guidance on inspecting tank appurtenances and accessories?
    a)  API 652
    b) API 2610
    c) NCAE 45R96
    d) STI-008
    b) API 2610
  51. For new tanks build to API 650, the minimum new thickness:
    a) should never be less than 1/2"
    b) considers only the specific gravity of the product
    c) considers only the specific gravity of the hydrotest water
    d) considers both the specific gravity of the product and the hydrotest water
    d) considers both the specific gravity of the product and the hydrotest water
  52. The product in a tank creates:
    a) practically no stress over the entire floor
    b) practically no stress in the floor away from the shell
    c) equal stresses in the floor and shell plates
    d) equal stresses that are equal throughout the shell
    b) practically no stress in the floor away from the shell
  53. On a 120 foot diameter tank the:
    a) pressure is highest at the bottom of the shell
    b) highest stresses are in the tank floor
    c) shell plates will be the same thickness on each course
    d) nozzle flanges should be Class 300
    a) pressure is highest at the bottom of the shell
  54. A large area on a shell course is corroded below acceptable limits.  Which of the following is NOT an acceptable option?
    a) Replace the corroded area
    b) Lower the fill height
    c) Change to a product with a lower specific gravity
    d) Coat the corroded area with a lining
    d) Coat the corroded area with a lining
  55. An isolated deep pit in the shell:
    a) does not appreciably weaken the shell
    b) must always be repaired
    c) never needs to be repaired
    d) Should be evaluated per API 580
    a) does not appreciably weaken the shell
  56. Neither API 650 or API 653 have a method for determining the minimum required thickness of a tank's:
    a) annular plates
    b) floor plates
    c) nozzles
    d) shell plates
    c) nozzles
  57. Roof supports are normally:
    a) designed per AISC's Steel Construction Manual
    b) Designed per API 650
    c) made from 3/16" steel
    d) made of pipe
    a) designed per AISC's Steel Construction Manual
  58. The two primary factors of risk are:
    a) ________________ of failure
    b) ________________ of failure
    • a) Likelihood of failure
    • b) Consequence of failure
  59. Which of the following is NOT a normal outcome from an RBI assessment?
    a) When to inspect
    b) Where to inspect
    c) NDE technique(s) to use during the inspection
    d) Qualification requirements for individual performing the inspection.
    d) Qualification requirements for individual performing the inspection.
  60. Guidance on how to perform an RBI assessment can be found in:
    a) API 579
    b) API 580
    c) API 581
    d) API 579 or API 580
    e) API 580 or API 581
    e) API 580 or API 581
  61. Which document can be used during fitness for service assessments
    a) API 579
    b) API 580
    c) API 581
    a) API 579
  62. Safety precautions dealing with tank entry are discussed in:
    a) API 2015 & 2016
    b) API 2201
    c) API 2601
    d) USDA 4601
    a) API 2015 & 2016
  63. Inspection paint or crayon markers used on SS should be free of:
    a) bromides
    b) chlorides
    c) oxides
    d) sulfides
    b) chlorides
  64. Prior to entering a tank be sure to:
    a) lock out all pumps near the tank
    b) check condition of overhead structures inside the tank
    c) review the API 653 Appendix C checklist
    d) take external UT readings on the shell
    b) check condition of overhead structures inside the tank
  65. Prior to entering a floating roof tank be sure to:
    a) check that there is not a significant amount of liquid on the roof
    b) review tank entry guidelines specified in API 579
    c) review the API 653 Appendix C checklist
    d) take external UT readings on the roof
    a) check that there is not a significant amount of liquid on the roof
  66. Prior to conduction a tank inspection, the inspector should:
    a) read previous inspection records
    b) obtain an API TES certification
    c) obtain an API 650 certification
    d) determine the shell joint efficiency
    a) read previous inspection records
  67. Anchor bolts may be subject to what type of degradation?
    a) Calcining
    b) Corrosion/ Erosion
    c) crevice corrosion
    a) Calcining
  68. Which handrail member should be given special attention?
    a) angle iron
    b) bars
    c) t-bars
    d) tubular
    d) tubular
  69. Crevices in structural members should be checked with:
    a) UT
    b) UT or RT
    c) MT or PT
    d) scrapper of hammer
    d) scrapper of hammer
  70. Low spots on a platform that collect water are routine places for corrosion to occur.  This can be simply solved by:
    a) drilling a drain hole
    b) replacing the platform
    c) adding additional support to "cone-up" the platform
    d) removing the platform and providing a rope to hang on to
    a) drilling a drain hole
  71. the external joint between the tank floor plate extension and a concrete foundation should be:
    a) covered
    b) grouted
    c) insulated
    d) sealed
    d) sealed
  72. Anchor bolts corrosion below the nut can be checked by using:
    a) acoustic emission
    b) eddy current
    c) hammer testing
    d) RT
    c) hammer testing
  73. Tank grounding connections should be checked:
    a) per API 651
    b) per API 2601
    c) with and ammeter
    d) visually
    d) visually
  74. Which document provides information concerning the use of tank grounding to prevent static electricity?
    a) API 651
    b) API 2003
    c) API 2015
    d) API 2201
    b) API 2003
  75. Which coating problem is the most difficult to detect?
    a) Blister
    b) Bonding Failure
    c) Holiday
    d) Graffiti
    b) Bonding Failure
  76. Paint blisters occur most often on which f the following tank parts?
    a) Plate extension
    b) Nozzles
    c) Roof
    d) Shady side of the tank
    c) Roof
  77. Paint blisters occur most offer on which of the following tank parts?
    a) Anchor Bolts
    b) Paint under insulation
    c) Nozzles
    d) Side of the tank with the most sunlight
    d) Side of the tank with the most sunlight
  78. A tank is insulated.  Where is a likely spot for external shell corrosion?
    a) Nozzles
    b) Shady side of the tank
    c) Sunny side of the tank
    d) Top of the tank
    b) Shady side of the tank
  79. What techniques can be used to evaluate condition of insulation by finding insulation hot spots?
    a) Acoustic Emission or Neutron back-scatter
    b) Acoustic Emission or EMAT
    c) Guided wave UT or EMAT
    d) Thermography or Neutron back-scatter
    d) Thermography or Neutron back-scatter
  80. CUI in carbon steel is most aggressive at a temperature range of:
    a) 10-350F
    b) 50-150F
    c) 120-200F
    d) 180-250F
    c) 120-200F
  81. Where is a typical place for external corrosion on a tank shell?
    a) At the bottom
    b) Near the top
    c) Below a horizontal weld seam
    d) There is not a typical location for external shell corrosion
    a) At the bottom
  82. Which of the following is NOT a cause of corrosion at the bottom of a tank shell?
    a) Build-up of soil on shell
    b) Build-up of some foreign material on shell
    c) Leakage of a corrosion product
    d) Spalling of concrete ring wall
    d) Spalling of concrete ring wall
  83. Rigorous hammer testing of the shell should:
    a) Never be done
    b) Never be done on a tank that is in service
    c) be done by a ASNT technician
    d) be done to stress relieve the hammer tester!
    b) Never be done on a tank that is in service
  84. The upper shell of a floating roof tank has the potential for atmospheric corrosion on both sides.  On floating roof tanks with uncoated shells, special attention should be given to the shell on the upper:
    a) 12"
    b) 24"
    c) 36"
    d) Shell course
    b) 24"
  85. What is the best way to take UT thickness readings through a thin-film coating?
    a) Remove the coating at the UT location
    b) Subtract the thickness of the coating from the UT reading
    c) Use multi-echo thickness scope
    d) Let someone else take the reading!
    c) Use multi-echo thickness scope
  86. Stiffeners and wing girders are normally:
    a) hammer tested
    b) visually inspected
    c) hammer tested and visually inspected
    d) not inspected
    c) hammer tested and visually inspected
  87. If a crack is found in a wing girder, which technique should NOT be used to determine the extent of cracking?
    a) MT with prods
    b) MT with yoke and dry particles
    c) MT with yoke and wet particles
    d) PT
    a) MT with prods
  88. A tank is in caustic service.  A very common place for caustic cracking is at:
    a) vertical shell welds
    b) nozzle to shell welds
    c) bottom to shell weld
    d) connections for internal heating units
    d) connections for internal heating units
  89. Caustic and amine SCC shows up as:
    a) external cracks
    b) internal cracks
    c) external pits
    d) internal pits
    b) internal cracks
  90. Caustic that seeps out of a tank crack will appear as a:
    a) brown oxide
    b) green goo
    c) red deposit
    d) white salt
    d) white salt
  91. During an inspection of a caustic tank, cracking has been found at a couple of nozzles.  The inspector develops a repair plan to weld these cracks.  If the metal in the repair area is NOT thoroughly cleaned and neutralized what might occur during welding?
    a) Additional Cracking
    b) Arc Blow
    c) Creation of pyrophoric iron
    d) Small Fire
    a) Additional Cracking
  92. Hydrogen blistering is most common on the tank's:
    a) bottom and shell
    b) nozzles
    c) roof and shell
    d) heating coils
    a) bottom and shell
  93. Hydrogen blistering occurs on the tank's:
    a) external
    b) internal
    c) external and internal
    d) roof
    c) external and internal
  94. Hydrogen blistering can easily be found on the shell by:
    a) holding a flashlight within 24" perpendicular to the shell
    b) holding a flashlight against the shell with the beam parallel to the shell
    c) UT A-Scan
    d) MFL scan
    b) holding a flashlight against the shell with the beam parallel to the shell
  95. Which of the following in NOT evidence of a tank shell leak?
    a) Bulge on the shell
    b) Paint is missing
    c) Puddle of product at base of the tank
    d) Shell discoloration
    a) Bulge on the shell
  96. Which of the following is NOT a cause of tank deformation?
    a) Defective vent
    b) Earthquake
    c) Exceeded product fill height
    d) Settlement
    e) Wind
    c) Exceeded product fill height
  97. Which of the following welds is least likely to crack as the result of tank deformation?
    a) Bottom to shell weld
    b) Horizontal shell welds
    c) Shell to Roof weld
    d) Vertical Shell welds
    b) Horizontal shell welds
  98. When cracking is suspect in an area of tank deformation, which NDE is preferred?
    a) MT
    b) PT
    c) RT
    d) UT
    a) MT
  99. How can rivets be checked for tightness?
    a)  By lightly tapping one side and holding a finger on the opposite side.
    b) UT straight beam
    c) UT shear wave
    d) Visually
    a)  By lightly tapping one side and holding a finger on the opposite side.
  100. A suitable means of determining the overall integrity of the roof is:
    a) hammer testing
    b) hammer testing or MFL
    c) UT examination or hammer testing
    d) UT examination or MFL
    d) UT examination or MFL
  101. Hammer testing the roof:
    a) is an adequate means to determine if the roof will support personnel.
    b) might knock roof scale into the product.
    c) is a suitable substitute for UT roof scans
    d) should be done with a 4lb hammer.
    b) might knock roof scale into the product.
  102. Planks used as a walkway on the roof should span at least:
    a) 2 rafters
    b) 3 rafters
    c) 10 ft
    d) 20 ft
    a) 2 rafters
  103. When walking on a roof, it is advisable to walk:
    a) in the center of plates
    b) on the weld seams
    c) only if the roof thickness was verified with a few random spot UT readings
    d) lightly
    b) on the weld seams
  104. A floating roof tank is in a volatile service.  When walking on the floating roof, it is advisable:
    a) that the tank be high gauges
    b) stay on top of the pontoons
    c) to have two individuals on the roof at the same time
    d) sneak a smoke!
    a) that the tank be high gauges
  105. A floating roof tank is in a volatile service and is half full.  Which of the following is a requirement when walking on the floating roof?
    a) Only walking on planks
    b) Perform a couple of spot Us on the roof prior to walking on the roof.
    c) Personnel on the roof must wear respiratory equipment
    d) Personnel on the roof must be tied off to the shell.
    c) Personnel on the roof must wear respiratory equipment
  106. If the maximum operating level is exceeded on a floating roof tank:
    a) excessive tank settlement will occur
    b) the stresses on horizontal welds will exceed that allowed by the code
    c) the seal may be damaged
    d) the roof drain will probably be damaged.
    c) the seal may be damaged
  107. A blocked roof drain on a floating tank can cause:
    a) excessive hoop stresses on the tank shell.
    b) deformation of the roof pontoons
    c) water to accumulate on in the bottom of the tank
    d) the roof to sink.
    d) the roof to sink.
  108. A floating roof is sitting on its legs.  A blocked roof drain on a floating tank can cause:
    a) excessive hoop stresses on the tank shell.
    b) deformation of the roof pontoons
    c) water to accumulate on in the bottom of the tank
    d) Severe roof damage
    d) Severe roof damage
  109. External rood corrosion is most common at:
    a) roof seams
    b) roof depressions
    c) the roof to shell welds
    d) rafter locations
    b) roof depressions
  110. Doubling of an UT instrument is when:
    a) the displayed reading is twice the actual thickness reading
    b) at least two UT readings are taken at each TML
    c) the thickness of the over-lapped portion of a fillet weld is twice he measure thickness
    d) the UT instrument takes both thickness and temperature measurements.
    a) the displayed reading is twice the actual thickness reading
  111. The soil to air corrosion can affect tank farm piping.  To check for soil to air corrosion, the soil around the pipe should be dug away for:
    a) 6 to 12 inches
    b) 12 to 24 inches
    c) 18 to 36 inches
    d) 6 to 8 feet
    a) 6 to 12 inches
  112. Which of the following is a potential cause for significant distortion of pipe connected to the tank?
    a) Excessive tank settlement.
    b) Over filling the tank
    c) Nozzle corrosion
    d) Undersized flange class
    a) Excessive tank settlement.
  113. Which of the following is a potential cause for significant distortion of pipe connected to the tank in colder climates?
    a) Frost heave of pipe supports
    b) Over filling the tank
    c) Nozzle Corrosion
    d) Thinning of shell
    a) Frost heave of pipe supports
  114. which of the following is a potential cause for significant distortion of pipe connected to the tank in colder climates
    a) Frost heave of pipe supports
    b) Over filling the tank
    c) Nozzle corrosion
    d) Thinning of shell
    a) Frost heave of pipe supports
  115. What should be done if there is significant distortion discovered at a nozzle?
    a) Must examine entire distorted area with US scan
    b) Must examine entire distorted area with PT
    c) Clean and examine the distorted area for cracks
    d) Clean and examine the distorted are for thinning
    c) Clean and examine the distorted area for cracks
  116. What is a common problem for flame arrestors?
    a) Excessive internal corrosion
    b) internal cap melt
    c) Internal screens get plugged
    d) Incorrect flange class is used
    c) Internal screens get plugged
  117. Which of the following is NOT a problem that can occur if a flame arrestor gets plugged?
    a) Floating roof sucks in
    b) Tank over pressures
    c) Tank roof to shell weld fails
    d) tank sucks in due to vacuum
    a) Floating roof sucks in
  118. Which of the following is NOT at common way for flame arrestors to get plugged?
    a) Bees, must daubers or insects
    b) Corrosion build up
    c) Tank over pressure
    d) Solidification of tank vapors
    c) Tank over pressure
  119. When inspecting a pressure vacuum vent, which of the following is NOT something that needs inspected?
    a) check for the build up of solids
    b) Check that moving parts are free to operate
    c) Check for corrosion
    d) Check vent sizing capacity
    d) Check vent sizing capacity
  120. What is a reliable method for checking the floor for soil side corrosion?
    a) Lifting the tank
    b) MFL (magnetic flux leakage)
    c) Removal of a few floor coupons
    d) Spot UT
    b) MFL (magnetic flux leakage)
  121. What is a useful method for checking the tank floor for soil side corrosion?
    a) Lifting the tank
    b) Removal of a few floor coupons
    c) Robotic inspection
    d) Spot UT's of a 36" grid
    c) Robotic inspection
  122. Which of the following is a primary advantage of the MFL floor scan?
    a) the technique requires little training
    b) Inexpensive to perform
    c) Significant portion of floor can be examined
    d) Thickness reading is highly accurate
    c) Significant portion of floor can be examined
  123. A tank is lifted in order to repairs the tank's foundation.  Based on this activity, which of the following is correct?
    a) the Tank will probably need to be hydrotested
    b) The foundation will need to be spark tested
    c) This repair must be approved by the inspector and engineer
    d) The concrete used in the repair should not slump more than 1-1/2"
    a) the Tank will probably need to be hydrotested
  124. The owner elects to tunnel under a tank to see a portion of the bottom side of the tank.  What is the primary problem with tunneling?
    a) Cave-ins
    b) Difficult to compact the fill
    c) Interference with SP systems
    d) Increases the likelihood of soil to air corrosion
    b) Difficult to compact the fill
  125. Which of the following is NOT a reason for listing a tank?
    a) 100% inspection of the soil side of the tank floor
    b) Coat the bottom side of the floor
    c) Repair the foundation or pad
    d) Fillet weld the bottom seams on the soil-side
    d) Fillet weld the bottom seams on the soil-side
  126. Which of the following is NOT a cause for internal roof corrosion?
    a) Corrosive product in the vapor space
    b) Pyrophoric iron
    c) Oxygen
    d) Water vapor
    b) Pyrophoric iron
  127. Sometimes roof coupons are cut out in order to check the condition of the roof rafters.  Which of the following is correct when cutting roof coupons?
    a) the activity must be approved by the engineer and inspector
    b) Coupons must be at least 6" x 6"
    c) Coupons must have rounded corners
    d) Replacement plate must be stitch welded at least 1" in every 12"
    c) Coupons must have rounded corners
  128. If a floating roof drain gets plugged, the:
    a) roof may sink
    b) API 653 inspector will not get blamed
    c) API 653 inspector will win the lottery
    d) API 653 inspector will get a raise
    a) roof may sink
  129. If there are leaks in a floating roof or the pontoons, which of the following is NOT likely to occur?
    a) The roof may sink
    b) The roof may tilt and damage the seals and roof
    c) The roof may tilt and turn upside down
    d) More difficult to prep the tank for inspections
    c) The roof may tilt and turn upside down
  130. Which of the following is NOT commonly installed on a floating roof?
    a) Cathodic Protection
    b) Drains
    c) Grounding Connections
    d) Guides
    a) Cathodic Protection
  131. What is likely to occur to a floating roof tank that has landed on its legs and the drain is plugged?
    a) The roof collapses
    b) The roof sinks
    c) Excessive top side corrosion occurs
    d) the roof inspection will be performed with scuba gear!
    a) The roof collapses
  132. During an outage, the floating roof drain lines should initially be pressure tested fro 1/2 hour.  The test should normally be conducted at:
    a) 2.5 psig
    b) 5.0 psig
    c) 15 psig
    d) 30 psig
    d) 30 psig
  133. If a drain line contains a swing joint, a second 1/2 hour pressure test should be conducted at:
    a) 2.5 psig
    b) 5.0 psig
    c) 15 psig
    d) 30 psig
    b) 5.0 psig
  134. What is the reason for a 2nd pressure test of a drain that has a swing joint?
    a) This is such an important test, that a double check is needed
    b) the Joint may be self sealing at low pressures, but leaks at low pressure
    c) The joint may be self sealing at high pressures, but leaks at low pressures
    d) Just a good way to collect more inspection man-hours.
    c) The joint may be self sealing at high pressures, but leaks at low pressures
  135. When walking on an aluminum internal floating roof:
    a) add planking prior to walking on the tank
    b) be sure to walk on seams
    c) take thickness readings prior to walking on the roof
    d) Best to use rope access and suspend the ceiling
    a) add planking prior to walking on the tank
  136. Aluminum floating roof legs must be
    a) at least 0.250" thick
    b) should be designed per API 620
    c) Should be avoided in tanks with non-aluminum bottoms
    d) electrically isolated from carbon steel to prevent galvanic corrosion.
    d) electrically isolated from carbon steel to prevent galvanic corrosion.
  137. Once it is safe to enter the tank, a preliminary inspection should first be conducted of the:
    a) bottom
    b) nozzles
    c) roof and support system
    d) shell
    c) roof and support system
  138. Normally internal tank corrosion is least likely to occur:
    a) on the bottom
    b) at the liquid level line
    c) inside nozzles
    d) in the vapor space
    c) inside nozzles
  139. Dry pyrophoric material can cause
    a) cracking
    b)general metal loss
    c) ignition
    d) pitting
    c) ignition
  140. Pyrophoric material tends to collect on the:
    a) floor and top side of the rafters
    b) rafters and bottom side of roof
    c) nozzles (360 degrees)
    d) shell
    a) floor and top side of the rafters
  141. Pyrophoric material should be:
    a) air dried
    b) kept moist
    c) removed with a dry vacuum
    d) removed per API 2201
    b) kept moist
  142. Handling pyrophoric material is discussed in:
    a) API 653
    b) API 2015 & API 2016
    c) NACE 92-432
    d) NACE 99-121
    b) API 2015 & API 2016
  143. In sour service, corrosion is often occurs in the:
    a) floor
    b) Nozzles
    c) shell
    d) vapor space
    d) vapor space
  144. In sour services, corrosive vapors are formed when moisture and air mixes with:
    a) chlorides
    b) halogens
    c) hydrocarbons
    d) hydrogen sulfide
    d) hydrogen sulfide
  145. In a 98% sulfuric acid tank, corrosion often occurs at the vapor liquid interface.  This is the result of:
    a) acid vapors
    b) hydrogen sulfide
    c) sulfidation
    d) water on top of the acid that creates a weaker acid
    d) water on top of the acid that creates a weaker acid
  146. In a 98% sulfuric acid tank, corrosion often occurs in the:
    a) floor
    b) top side of the bottom
    c) vapor space
    d) vapor liquid interface
    d) vapor liquid interface
  147. In tanks rarely used, like pipelines breakout tanks, corrosion often occurs:
    a) behind the tank seal
    b) inside nozzles
    c) at the center of the floor
    d) on the entire shell
    a) behind the tank seal
  148. which carbon steels are the most susceptible to hydrogen blistering?
    a) those with mill scale
    b) those with dissimilar materials
    c) those that are non-normalized
    d) those with laminations and slag inclusions
    d) those with laminations and slag inclusions
  149. Caustic stress corrosion cracking becomes prevalent in carbon steel when the temperature exceeds
    a) 40F
    b) 125F
    c) 150F
    d) 200F
    c) 150F
  150. A common way to completely inspect a tank follow is by:
    a) MFL (Magnetic Flux leakage)
    b) MFL (Magnetic Flus Leakage) with UT follow-up in suspect areas
    c) Spot UT with a statistical evaluation
    d) Visual with a pit gauge
    b) MFL (Magnetic Flus Leakage) with UT follow-up in suspect areas
  151. Prior to performing a tank floor scan it is a good idea to have the:
    a) grounding devices disconnected
    b) floor sandblasted to a NACE 1 finish
    c) floating roof legs placed at the low leg settings
    d) scanning personnel tested to demonstrate their ability to use this equipment
    d) scanning personnel tested to demonstrate their ability to use this equipment
  152. A statistical method is used to determine the probable minimum remaining thickness.  Typically how much of the floor is scanned to gather into for the statistical analysis?
    a) 0.2 - 5%
    b) 0.2 - 10%
    c) 5 - 10 %
    d) 5 - 25%
    e) 10 - 25%
    b) 0.2 - 10%
  153. A statistical method is used to determine the probable minimum remaining thickness.  What part of the floor should be included in the statistical analysis?
    a) Outer circumference by the shell
    b) An "X" pattern across the tank
    c) Samples around the tank not exceeding 32ft apart
    d) Center of the tank
    a) Outer circumference by the shell
  154. When is a statistical analysis of a tank floor effective?
    a) Tanks on pads that may have been contaminated with corrosion fluids
    b) Tanks with a Galvanic CP system
    c) Tanks on pads that have a number clay balls
    d) Tanks on pads that have uniform consistency
    d) Tanks on pads that have uniform consistency
  155. Pits depth can be estimated by use of a:
    a) mechanical pencil
    b) pocket knife
    c) pocket ruler
    d) thumb imprint in the pit
    a) mechanical pencil
  156. Accelerated tank floor corrosion may occur at:
    a) bulges
    b) depressions
    c) bulges or depressions
    d) bulges and depressions
    b) depressions
  157. MFL scanning equipment is useful for finding:
    a) only the top side corrosion on non-coated floors
    b) only top side & bottom side corrosion on non-coated floors
    c) only top side corrosion on coated and non-coated floors
    d) both top side and bottom side corrosion on coated and non-coated floors.
    d) both top side and bottom side corrosion on coated and non-coated floors.
  158. MFL scanning equipment may miss:
    a) uniform corrosion
    b) bottom side pits
    c) small diameter pits
    d) corrosion with 6" of a weld
    c) small diameter pits
  159. Which part of the tank shell is considered the highest stressed?
    a) Shell near nozzles
    b) shell to bottom area
    c) shell to roof area
    d) Vertical welds
    b) shell to bottom area
  160. One method to use when checking the shell for cracks is to put penetrant on one side of the shell and developer on the other.  How long might it take to detect a crack?
    a) 10 minutes
    b) 1 hours
    c) 4 hours
    d) 24 hours
    d) 24 hours
  161. One method to use to check a tank lining is:
    a) holiday testing
    b) MFL
    c) pressure test
    d) statistical analysis
    a) holiday testing
  162. Which of the following methods should NOT be used on a glass lined tank?
    a) hammer testing
    b) visual
    c) visual
    d) visual
    a) hammer testing
  163. What type of lined tanks should be painted on the external with a unique color of stencil a warning to indicate they have a special lining.
    a) all lined tanks
    b) glass lined
    c) lead lined
    d) rubber lined
    b) glass lined
  164. A band of corrosion around the entire tank shell is found on a cone roof tank.  the tank corroded band is about 30ft above the floor.  The corrosion rate is this area is 4mils per year (0.004 ipy).  The roof support columns should also be inspected.  What would you expect to see?
    a) Corrosion throughout the columns
    b) Corrosion at the 30 ft. level, with corrosion rate of 4 mils per year
    c) Corrosion at the 30 ft. level, with corrosion rate of 8 mils per year
    d) corrosion at the 30 ft. level, with an unpredictable corrosion rate
    c) Corrosion at the 30 ft. level, with corrosion rate of 8 mils per year
  165. What is a good method to check the soundness of the roofs structural members and check the tightness of roof bolting?
    a) Eddy Current
    b) Light hammer taps
    c) Hard hammer taps
    d) 16lb sledge hammer taps
    b) Light hammer taps
  166. Steam heating coils should be inspected using either RT of UT to detect:
    a) Build up of internal deposits
    b) caustic embrittlement
    c) condensate grooving
    d) hydrogen pitting
    c) condensate grooving
  167. A hydrotest is performed on a tank of high alloy.  What is one major concern?
    a) Chloride stress corrosion cracking
    b) Dirt in the water that will settle on the tank floor
    c) Flange rating of the nozzle flanges
    d) Oxygen pitting in the vapor space
    a) Chloride stress corrosion cracking
  168. If substituting an air-test for a tank hydrotest the air pressure should not exceed:
    a) 2 inches of water
    b) 2 ounces per square inch
    c) 2 psig
    d) 15 psig
    a) 2 inches of water
  169. Which of the following is NOT an RPB (Release Prevention barrier)?
    a) Concrete reinforced Pad
    b) Double bottom tank
    c) Effective bottom side CP
    d) Under tank liner
    c) Effective bottom side CP
  170. When visual inspection is performed, the inspector's eyes should be within:
    a) 12 inches of the surface to be examined
    b) 24 inches of the surface to be examined
    c) 36 inches of the surface to be examined
    d) as close as the inspector's truck can get to the surface to be examined.
    b) 24 inches of the surface to be examined
  171. When visual inspection is performed, the inspector's eyes should be looking relatively straight on to the surface.  When inspecting the surface the inspector's eyes should not be at an angle that is less than:
    a) 10 degrees
    b) 30 degrees
    c) 45 degrees
    d) 60 degrees
    b) 30 degree
  172. When visual inspection is performed, the amount of light needed for general viewing should be at least:
    a) 15 foot-candles
    b) 30 foot-candles
    c) 50 foot-candles
    d) 100 foot-candles
    a) 15 foot-candles
  173. When visual inspection is performed, the amount of light needed for inspecting small anomalies should be at least:
    a) 15 foot-candles
    b) 30 foot-candles
    c) 50 foot-candles
    d) 100 foot-candles
    c) 50 foot-candles
  174. A high penetrating oil is used to check the initial weld pass on the one side of the bottom to shell weld.  The minimum dwell time for this test is:
    a) 10 minutes
    b) 1 hour
    c) 4 hours
    d) 24 hours
    c) 4 hours
  175. Old Code used to build riveted Tanks
    API 12A
  176. Construction code for low-pressure tanks
    API 620
  177. Construction code for atmospheric tanks
    API 650
  178. Cathodic protection of tanks
    API 651
  179. Tanks linings - Code
    API 652
  180. Tank venting - code
    API 2000
  181. Safety precautions for tank entry (2 codes)
    API 2015 & API 2016
  182. UL tank construction code
    UL-142

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