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Subject API Standard 650

Issue Date 06/98

Revision Date 02/00

Page 1

Section 1 – Scope 1. API 650 covers the design, materials, fabrication, erection, and testing of aboveground steel storage tanks. What is the maximum internal pressure for tanks not covered by appendix F of this standard? a) Maximum pressure shall not exceed 15 psig b) Maximum pressure shall not exceed 15 psia c) Maximum pressure shall not exceed the weight of the roof plates d) Maximum pressure shall not exceed the weight of the floor plates Reference: API-650, Paragraph 1.1.1 2. API-650 applies only to tanks whose entire bottom is uniformly supported and tanks in ___ that have a maximum operating temperature of _____F. a) Any petrochemical service and temperature not exceeding 120F b) Non-refrigerated service and temperature not exceeding 200F c) Non-refrigerated service and temperature not exceeding 120F d) Any petrochemical service and temperature not exceeding 200F Reference: API-650, Paragraph 1.1.1 3. An aboveground storage tank is to be subjected to a small internal service pressure. To which standard or Code may the tank be designed? a) API-650 providing the requirements of Appendix F are met b) API-653 providing the requirements of Appendix F are met c) ASME-Section VIII, Div. 1 providing the requirements of Appendix F are met d) ASME-Section VIII, Div. 2 providing the requirements of Appendix F are met Reference: API-650, Paragraph 1.1.1 4. According to Table 1-1, what is the status of Appendix O? a) This Appendix is a Recommendation b) This Appendix is a Requirement c) This Appendix is Mandatory d) This Appendix is Purchaser’s option Reference: API-650, Paragraph 1.1.19 and Table 1-1 5. What is the purpose of the ( ) next to a paragraph number? a) The paragraph requires a decision or action by the API b) The paragraph requires a decision or action by the Inspector c) The paragraph requires a decision or action by the purchaser d) The paragraph requires a decision or action by the fabricator Reference: API-650, Paragraph 1.1.2 and Note

API-653 Exam Prep Course

BAY Technical Associates, Inc.

(610) 594-9036

Subject API Standard 650

Issue Date 06/98

Revision Date 02/00

Page 2

Answers to API-Standard 650 Section 1, Scope Question Number 1 2 3 4 5

Answer C B A D C

Should you find a mistake or disagree with any answer listed, please bring it to our attention for correction or clarification. BAY Technical Associates, Inc. has attempted to provide answers developed from paragraphs of the respective Code, Standard, or Recommended Practice. You can reach BAY Tech by phone at (610) 594-9036, by fax at (610) 594-2612, or by e-mail at [email protected].

API-653 Exam Prep Course

BAY Technical Associates, Inc.

(610) 594-9036

Subject API Standard 650

Issue Date 06/98

Revision Date 02/00

Page 3

Section 2 – Materials 1. API-650 lists materials to be used in the construction of tanks covered by the standard. Is it permissible to use materials other than those listed in the standard? a) No only materials listed in API-650 may be used in tank fabrication b) Yes as long as the manufacturer accepts full liability for tank failure c) Yes providing it is certified as meeting all requirements of a material listed in API-650 and is approved by the API-653 Inspector d) Yes providing it is certified as meeting all the requirements of a material listed in API-650 and is approved by the purchaser Reference: API-650, Paragraph 2.1.1 2. If a new or unused plate cannot be completely identified, may it still be used in the construction of tanks within the scope of API-650? a) Yes only if the material passes the tests prescribed in Appendix S b) Yes only if the material passes the tests prescribed in Appendix N c) Yes only if the material passes the tests prescribed in ASME Section V d) Yes only if the material passes the tests prescribed in ASME Section VIII, Div. 2 Reference: API-650, Paragraph 2.1.2 3. What is the maximum permitted underrun for shell, roof, and bottom plates? a) 0.10 inch from the computed design thickness or minimum permitted thickness b) 0.01 inch from the computed design thickness or minimum permitted thickness c) 0.001 inch from the computed design thickness or minimum permitted thickness d) 0.02 inch from the computed design thickness or minimum permitted thickness Reference: API-650, Paragraph 2.2.1.2.3 4. Shell plates are limited to what maximum thickness? a) Shell plates are limited to a maximum thickness of 1.250 inches b) Shell plates are limited to a maximum thickness of 1.875 inches c) Shell plates are limited to a maximum thickness of 1.750 inches d) Shell plates are limited to a maximum thickness of 1.075 inches Reference: API-650, Paragraph 2.2.1.4 5. Which of the following is not a requirement for shell plates that are thicker than 1.5 inches? a) Plates thicker than 1.5 inches shall be free of mill scale and painted b) Plates thicker than 1.5 inches shall be made to fine-grain practice c) Plates thicker than 1.5 inches shall be impact tested d) Plates thicker than 1.5 inches shall be normalized or quench tempered Reference: API-650, Paragraph 2.2.1.4

API-653 Exam Prep Course

BAY Technical Associates, Inc.

(610) 594-9036

Subject API Standard 650

Issue Date 06/98

Revision Date 02/00

Page 4

6. What is the maximum shell plate thickness permitted for a tank fabricated of ASTM A 36 material? a) This plate material is limited to 1.750 inches b) This plate material is limited to 1.075 inches c) This plate material is limited to 1.050 inches d) This plate material is limited to 1.500 inches Reference: API-650, Paragraph 2.2.2 a 7. What is the maximum shell plate thickness permitted for a tank fabricated of ASTM A 285, Grade C material? a) This plate material is limited to 1.000 inches b) This plate material is limited to 1.250 inches c) This plate material is limited to 1.500 inches d) This plate material is limited to 1.750 inches Reference: API-650, Paragraph 2.2.2 d 8. All welding to repair surface defects shall be done with ______. a) Cellulose coated electrode b) High nickel content electrode c) Low-hydrogen electrode d) Gas tungsten process Reference: API-650, Paragraph 2.2.6.2 9. When conducting impact tests, how many specimens are required from a single test coupon? a) Impact tests shall be performed on a single specimen taken from a single test coupon b) Impact tests shall be performed on two specimens taken from a single test coupon c) Impact tests shall be performed on three specimens taken from a single test coupon d) Impact tests shall be performed on four specimens taken from a single test coupon Reference: API-650, Paragraph 2.2.8.3 10. In situations where it is not possible to obtain full size specimens, what is the required width along the notch for subsize specimens? a) 60% of the material thickness b) 80% of the material thickness c) 90% of the material thickness d) 75% of the material thickness Reference: API-650, Paragraph 2.2.8.5

API-653 Exam Prep Course

BAY Technical Associates, Inc.

(610) 594-9036

Subject API Standard 650

Issue Date 06/98

Revision Date 02/00

Page 5

11. Unless data is available to justify a different temperature, what must the design metal temperature be for an aboveground storage tank to be installed in Birmingham, Alabama? a) The design temperature shall be assumed to be 25F b) The design temperature shall be assumed to be 15F c) The design temperature shall be assumed to be 20F d) The design temperature shall be assumed to be 10F Reference: API-650, Paragraph 2.2.9.3 and Figure 2-2 12. Unless data is available to justify a different temperature, what must the design metal temperature be for an aboveground storage tank to be installed in Indianapolis, Indiana? a) The design temperature shall be assumed to be 5F b) The design temperature shall be assumed to be -5F c) The design temperature shall be assumed to be 0F d) The design temperature shall be assumed to be 10F Reference: API-650, Paragraph 2.2.9.3 and Figure 2-2 13. What is the required average longitudinal impact value of three specimens taken from a 1.375 inch thick A 516M-60(415) normalized Group IIIA test coupon? a) 30 foot-pounds b) 20 foot-pounds c) 15 foot-pounds d) 13 foot-pounds Reference: API-650, Paragraph 2.2.10.2 and Figures 2-3 and 2-4 14. What is the required average longitudinal impact value of three specimens taken from a 1.5 inch thick A 516M-70(485) as rolled Group V test coupon? a) 35 foot-pounds b) 25 foot-pounds c) 20 foot-pounds d) 30 foot-pounds Reference: API-650, Paragraph 2.2.10.2 and Figures 2-3 and 2-4 15. Longitudinal impact tests are performed on three specimens, taken from a 1.5 inch thick A 516M-70(485) as rolled test coupon with the following results: Specimen #1 – 42 footpounds, Specimen #2 – 18 foot-pounds, Specimen # 3 – 31 foot-pounds. Is the impact test acceptable? a) Yes the average impact value exceeds 30 foot-pounds b) Yes only one specimen is less than 2/3 the specified minimum value c) No the average impact value of Specimen # 1 exceeds 2/3 the required average impact value and one specimen is less than 2/3 the specified minimum value d) No Specimen #2 is less than 2/3 the specified minimum Reference: API-650, Paragraph 2.2.8.3 and Figures 2-3 and 2-4 API-653 Exam Prep Course

BAY Technical Associates, Inc.

(610) 594-9036

Subject API Standard 650

Issue Date 06/98

Revision Date 02/00

Page 6

Answers to API-Standard 650 Section 2, Materials Question Number 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Answer D B B C A D A C C B C A C D D

Should you find a mistake or disagree with any answer listed, please bring it to our attention for correction or clarification. BAY Technical Associates, Inc. has attempted to provide answers developed from paragraphs of the respective Code, Standard, or Recommended Practice. You can reach BAY Tech by phone at (610) 594-9036, by fax at (610) 594-2612, or by e-mail at [email protected].

API-653 Exam Prep Course

BAY Technical Associates, Inc.

(610) 594-9036

Subject API Standard 650

Issue Date 06/98

Revision Date 02/00

Page 7

Section 3 – Design 1. According to API-650, tack welds _______ a) May be installed by welders who need practice b) Can be considered as adding to the strength of a welded joint c) Are not considered as having any strength value in the finished structure d) Have strength value in the finished structure provided they are performed by a qualified welder to a qualified welding procedure Reference: API-650, Paragraph 3.1.3.2 2. What is the minimum size fillet weld permitted when joining a 1” thick plate to a ¾” thick plate? a) 3/16” b) 1/4” c) 3/8” d) 1/2” Reference: API-650, Paragraph 3.1.3.3 3. For lap-welded joints that are tack welded, what is the minimum amount of lap permitted? a) The lap need not exceed 2” b) The lap need not exceed 1” c) The joint shall be lapped at least 5 times the minimum required thickness of the thinner plate d) The joint shall be lapped at least 5 times the nominal thickness of the thinner plate Reference: API-650, Paragraph 3.1.3.5 4. The welded joint pictured here is defined as what type of joint? a) Double-V butt joint b) Square-groove butt joint c) Double-U butt joint d) Double-square butt joint Reference: API-650, Paragraph 3.1.5.1 5. Vertical shell joints may be partial penetration groove welds welded from both sides. a) True b) False Reference: API-650, Paragraph 3.1.5.2 a

API-653 Exam Prep Course

BAY Technical Associates, Inc.

(610) 594-9036

Subject API Standard 650

Issue Date 06/98

Revision Date 02/00

Page 8

6. API 650 requires the vertical joints in adjacent shell courses to be offset. What is the minimum required offset between the first course of an AST, which is 1.25” thick and the second course which is 1” thick? a) The minimum offset shall be 5 times the second shell course height b) The minimum offset shall be 5 times the thickness of the second course c) The minimum offset shall be 5 times the first shell course height d) The minimum offset shall be 5 times the thickness of the first shell course Reference: API-650, Paragraph 3.1.5.2 b 7. Three-plate laps in tank bottoms shall be at least ____ from each other, from the tank shell, from butt-welded annular-plate joints, and from joints between annular plates and the bottom. a) 1.2 inches b) 12 inches c) 1.2 feet d) 12 feet Reference: API-650, Paragraph 3.1.5.4 8. What is the maximum size of fillet weld permitted in the attachment between the lowest course shell plate and the bottom plate? a) 3/8 inch b) 5/16 inch c) 1/2 inch d) 1/4 inch Reference: API-650, Paragraph 3.1.5.7 9. What is the minimum size fillet weld required on each side of the shell plate attaching shell plate to the annular plate? The shell plate is 1.25” thick. a) 3/8 inch b) 3/16 inch c) 1/4 inch d) 5/16 inch Reference: API-650, Paragraph 3.1.5.7 10. A 110 ft diameter tank shall have a top angle not less than ____ inches. a) 2 X 2 X 3/8 b) 2 X 3 X 3/8 c) 3 X 3 X 3/8 d) 3 X 2 X 3/8 Reference: API-650, Paragraph 3.1.5.9

API-653 Exam Prep Course

BAY Technical Associates, Inc.

(610) 594-9036

Subject API Standard 650

Issue Date 06/98

Revision Date 02/00

Page 9

11. The ______ shall state the design metal temperature, the design specific gravity, the corrosion allowance, and the design wind velocity. a) The purchaser b) The fabricator c) The Inspector d) Erector Reference: API-650, Paragraph 3.2.1 12. According to API-650, tanks meeting the minimum requirements of the standard may be subjected to a partial vacuum of _____. a) One inch of mercury b) One inch of water pressure c) One pound per square inch absolute d) One centimeter of water pressure Reference: API-650, Paragraph 3.2.4 13. An AST is 116 ft in diameter and constructed of A 516M-70(485) Group V as rolled material. How many hardness tests are required on one circumferential weld? a) One b) Two c) Three d) Four Reference: API-650, Paragraph 3.3.4 14. The purchaser orders an aboveground storage tank and insists on a corrosion allowance in the bottom plates of .125 inches. What is the minimum thickness permitted for bottom plates in this tank? a) Minimum thickness of bottom plate is 1/4 inch b) Minimum thickness of bottom plate is 1/2 inch c) Minimum thickness of bottom plate is 3/8 inch d) Minimum thickness of bottom plate is 5/16 inch Reference: API-650, Paragraph 3.4.1 15. What is the minimum projection, of trimmed bottom plates, beyond the outside edge of the weld attaching bottom to the shell? a) Minimum projection is 0.01 inch b) Minimum projection is 0.10 inch c) Minimum projection is 1.00 inch d) Minimum projection is 10.0 inch Reference: API-650, Paragraph 3.4.2

API-653 Exam Prep Course

BAY Technical Associates, Inc.

(610) 594-9036

Subject API Standard 650

Issue Date 06/98

Revision Date 02/00

Page 10

16. Annular bottom plates shall have a radial width that provides at least ____ between the inside of the shell and any lap-welded joint in the remainder of the bottom. a) 12 inches b) 24 inches c) 1.2 inches d) 2.4 inches Reference: API-650, Paragraph 3.5.2 17. How far must annular bottom plates project outside the shell? a) Annular bottom plates shall project at least 1 inch when trimmed b) Annular bottom plates shall project at least 1/2 inch beyond the edge of the weld c) Annular bottom plates shall project at least 2 inches outside the shell d) Annular bottom plates shall project at least 5t (t = thickness of the shell course) outside the shell Reference: API-650, Paragraph 3.5.2 18. The thickness of the first shell course of an aboveground storage tank is 1&5/8th inches. The hydrostatic test stress in the first shell course is 33,000 psi. What is the minimum permissible thickness of the annular bottom plates? a) Minimum permitted thickness is 5/8th inch b) Minimum permitted thickness is 9/16th inch c) Minimum permitted thickness is 3/4 inch d) Minimum permitted thickness is 11/16th inch Reference: API-650, Paragraph 3.5.3 and Table 3-1 19. According to API-650, what is the minimum allowable nominal shell thickness of an AST that is 86 feet in diameter? a) Minimum nominal shell thickness is 3/16th inch b) Minimum nominal shell thickness is 1/4 inch c) Minimum nominal shell thickness is 9/32nd inch d) Minimum nominal shell thickness is 5/16th inch Reference: API-650, Paragraph 3.6.1.1 20. Unless otherwise agreed to by the purchaser, what is the minimum nominal width of shell plates? a) Minimum width of shell plates is 84 inches b) Minimum width of shell plates is 96 inches c) Minimum width of shell plates is 72 inches d) Minimum width of shell plates is 120 inches Reference: API-650, Paragraph 3.6.1.2

API-653 Exam Prep Course

BAY Technical Associates, Inc.

(610) 594-9036

Subject API Standard 650

Issue Date 06/98

Revision Date 02/00

Page 11

21. Aboveground storage tank manufacturers are required to furnish a drawing to the purchaser listing all but which of the following for each course? a) The material specification b) The allowable stress c) The nominal thickness used d) The nominal thickness of coatings Reference: API-650, Paragraph 3.6.1.7 22. In calculating the net plate thickness for an AST fabricated of A 516M Grade 450(60) material, what would be the product design stress value used in the calculation? a) 24,000 b) 21,300 c) 32,000 d) 23,300 Reference: API-650, Paragraph 3.6.2.1 and Table 3-2 23. The fabricator of an AST obtains the approval of the purchaser to use the alternative shell design permitted in Appendix A in the design of a 60 foot diameter tank using 3/8th inch A 516M Grade 450(60) plate. What allowable stress would be used in the design calculations? a) 21,300 b) 24,000 c) 21,000 d) 32,000 Reference: API-650, Paragraph 3.6.2.3 24. What is the maximum diameter of tank that permits the 1-foot method of calculation for required thickness? a) Tanks 50 feet in diameter and less b) Tanks 120 feet in diameter and less c) Tanks 180 feet in diameter and less d) Tanks 200 feet in diameter and less Reference: API-650, Paragraph 3.6.3.1 25. Openings in tank shells, larger than that required to accommodate a ____ flanged or threaded nozzle shall be reinforced. a) 2 inch b) 2.5 inch c) 3 inch d) 3.5 inch Reference: API-650, Paragraph 3.7.2.1

API-653 Exam Prep Course

BAY Technical Associates, Inc.

(610) 594-9036

Subject API Standard 650

Issue Date 06/98

Revision Date 02/00

Page 12

26. When installing openings in a shell plate, the edge of the fillet weld around the periphery of the reinforcing pad shall be spaced at least the greater of _______ from the centerline of any butt-welded shell joints. a) Eight inches or ten times the weld size b) Eight times the weld size or ten inches c) Eight times the weld size or six inches d) Eight inches or six times the weld size Reference: API-650, Paragraph 3.7.3.1 a 27. When installing openings adjacent to each other, how much space must there be between the welds around the periphery of the reinforcing plate? a) Eight times the larger weld or ten inches from each other b) Eight inches or six times the larger weld from each other c) Eight times the larger weld or six inches from each other d) Eight times the larger weld or eight inches from each other Reference: API-650, Paragraph 3.7.3.1 b 28. A minimum distance of ____ shall be maintained between the toe of a weld around a nonreinforced penetration and the toe of the shell-to-bottom weld. a) Ten inches b) Eight inches c) Six inches d) Three inches Reference: API-650, Paragraph 3.7.3.3 29. Subject to the acceptance of the purchaser, the manufacture may locate a circular shell opening in a horizontal butt-welded shell joint provided ______. a) Minimum spacing dimensions are met and a liquid penetrant examination of the welded joint is conducted b) Minimum spacing dimensions are met and a radiographic examination of the welded joint is conducted c) Minimum spacing dimensions are met and an ultrasonic examination of the welded joint is conducted d) Minimum spacing dimensions are met and a magnetic particle examination of the welded joint is conducted Reference: API-650, Paragraph 3.7.3.4 30. All flush-type clean-out fittings and flush-type shell connections shall be thermally stress relieved after assembly and prior to installation in the tank. What are the temperature range and time requirements for this stress relief activity? a) 1100F to 1200F for 1 hour per inch of reinforcing plate thickness b) 1100F to 1200F for 1/2 hour per inch of shell thickness c) 1100F to 1200F for 1 hour per inch of shell thickness d) 1100F to 1200F for 1 & 1/2 hour per inch of shell thickness API-653 Exam Prep Course

BAY Technical Associates, Inc.

(610) 594-9036

Subject API Standard 650

Issue Date 06/98

Revision Date 02/00

Page 13

Reference: API-650, Paragraph 3.7.4.1

API-653 Exam Prep Course

BAY Technical Associates, Inc.

(610) 594-9036

Subject API Standard 650

Issue Date 06/98

Revision Date 02/00

Page 14

31. Subject to the acceptance of the purchaser, the fabricator may stress relieve at a temperature of 1000F when it is impractical to stress relieve at a minimum temperature of 1100F providing _____. a) The shell plate is first pre-heated to 300F b) The holding time is increased to 2 hours per inch of thickness c) The holding time is increased to 4 hours per inch of thickness d) The holding time is increased to 10 hours per inch of thickness Reference: API-650, Paragraph 3.7.4.5 32. What is the minimum required thickness for a manhole cover plate to be used with a 24 inch manhole? The maximum design liquid level of the tank is 45 feet. a) Minimum thickness of cover plate is 9/16th inch b) Minimum thickness of cover plate is 5/8th inch c) Minimum thickness of cover plate is 1/2 inch d) Minimum thickness of cover plate is 11/16th inch Reference: API-650, Paragraph 3.7.5.1 and Table 3-3 33. What is the bolt circle diameter for a cover plate used with a 30 inch diameter manhole? a) 32 ¾ inch b) 36 ¼ inch c) 38 ¾ inch d) 42 ¼ inch Reference: API-650, Paragraph 3.7.5.2 and Table 3-5 34. The purchaser has ordered a 36 inch manhole to be installed in the first course of an AST. The thickness of the shell plate and the reinforcing plate is 1.375 inches. What is the required hole diameter that must be cut in the tank to accommodate this manhole? a) 36 & 1/4 inch b) 36 & 1/2 inch c) 36 & 3/4 inch d) 36 & 5/8 inch Reference: API-650, Paragraph 3.7.5.3 and Table 3-7 35. API 650 requires telltale holes in reinforcing plates. What is the required dimension of this hole and what should be done with it after the initial re-pad pressure test? a) The hole shall be 3/8 inch diameter and shall be left open to the atmosphere b) The hole shall be 1/4 inch diameter and shall be left open to the atmosphere c) The hole shall be 3/8 inch diameter and shall be closed after testing d) The hole shall be 1/4 inch diameter and shall be closed after testing Reference: API-650, Paragraph 3.7.6.1

API-653 Exam Prep Course

BAY Technical Associates, Inc.

(610) 594-9036

Subject API Standard 650

Issue Date 06/98

Revision Date 02/00

Page 15

36. What is the maximum size un-reinforced opening permitted in flat cover plates without increasing the thickness of the cover plate? a) 4 inch pipe size providing the edge of the opening is not more than ¼ the height or diameter of the opening closer to the center of the cover plate b) 3 inch pipe size providing the edge of the opening is not more than ¼ the height or diameter of the opening closer to the center of the cover plate c) 2 inch pipe size providing the edge of the opening is not more than ¼ the height or diameter of the opening closer to the center of the cover plate d) 1 & ½ inch pipe size providing the edge of the opening is not more than ¼ the height or diameter of the opening closer to the center of the cover plate Reference: API-650, Paragraph 3.8.3.1 37. What is the maximum size opening that may be placed in a cover plate? a) 12 inches pipe size b) 8 inches pipe size c) 6 inches pipe size d) 3 inches pipe size Reference: API-650, Paragraph 3.8.3.2 38. An aboveground storage tank has a design liquid height of 40 feet. The purchaser intends to install product mixing equipment in the cover plate of a 30 inch manhole. What is the required minimum thickness of the cover plate? a) The minimum thickness shall be at least .625 inches b) The minimum thickness shall be at least .75 inches c) The minimum thickness shall be at least .9375 inches d) The minimum thickness shall be at least .875 inches Reference: API-650, Paragraph 3.8.3.2 39. A 24 inch manhole is to be installed in a roof plate and it is anticipated that work may be carried on through the manhole while the tank is in use. What is the diameter of the opening to be cut in the roof plate and what is the outside diameter of the reinforcing plate? a) The diameter of the opening is 24.625” and the OD of the reinforcing plate is 42” b) The diameter of the opening is 24.625” and the OD of the reinforcing plate is 46” c) The diameter of the opening is 24.750” and the OD of the reinforcing plate is 42” d) The diameter of the opening is 24.750” and the OD of the reinforcing plate is 46” Reference: API-650, Paragraph 3.8.4 40. What is the minimum thickness permitted for rectangular roof opening cover plates? a) Minimum thickness shall not be less than .875 inches b) Minimum thickness shall not be less than .750 inches c) Minimum thickness shall not be less than .625 inches d) Minimum thickness shall not be less than .500 inches Reference: API-650, Paragraph 3.8.6.2 API-653 Exam Prep Course

BAY Technical Associates, Inc.

(610) 594-9036

Subject API Standard 650

Issue Date 06/98

Revision Date 02/00

Page 16

41. Stiffening ring splice welds shall be located at least _____ from any vertical shell weld. a) 24 inches b) 18 inches c) 12 inches d) 6 inches Reference: API-650, Paragraph 3.9.3.4 42. When stiffening rings are to be used as walkways, what is the required width of the stiffening ring? a) The width shall be not less than 36 inches clear of the projecting curb angle on the top of the tank shell b) The width shall be not less than 3 feet 6 inches clear of the projecting curb angle on the top of the tank shell c) The width shall be not less than 24 inches clear of the projecting curb angle on the top of the tank shell d) The width shall be not less than 2 feet 4 inches clear of the projecting curb angle on the top of the tank shell Reference: API-650, Paragraph 3.9.4 43. How far below the top of the curb angle should a stiffening ring, that is to be used as a walkway, be located? a) 3 feet 6 inches b) 36 inches c) 6 feet 3 inches d) 63 inches Reference: API-650, Paragraph 3.9.4 44. All roofs and supporting structures shall be designed to support dead loads plus a uniform live load of not less than _____ of projected area a) 25 pounds per square inch b) 25 pounds per square foot c) 25 pounds per square yard d) 25 pounds per square meter Reference: API-650, Paragraph 3.10.2.1 45. What is the minimum nominal thickness permitted for roof plates? a) 3/16 inch or 5.76 pounds per square foot b) 3/16 inch or 6.75 pounds per square foot c) 3/16 inch or 7.65 pounds per square foot d) 3/16 inch or 12-gauge sheet Reference: API-650, Paragraph 3.10.2.2

API-653 Exam Prep Course

BAY Technical Associates, Inc.

(610) 594-9036

Subject API Standard 650

Issue Date 06/98

Revision Date 02/00

Page 17

46. A roof where the continuous fillet weld between the roof plates and the top angle does not exceed 3/16", the slope at the top angle attachment does not exceed 2" in 12", and the shell-to-roof compression ring details are limited to Figure F-2 (a)-(d) may be considered what type of roof? a) A 1 in 6 roof b) A dangerous roof design and should be avoided c) A roof with inherent compensation d) A frangible roof Reference API-650, Paragraph 3.10.2.5.1 47. Rafters shall be spaced so that in the outer ring, their centers are not more than _____ apart measured along the circumference of the tank. a) 3 feet or 9.42 feet b) 2 feet or 6.28 feet c) 4 feet or 12.56 feet d) 2.5 feet or 7.85 feet Reference: API-650, Paragraph 3.10.4.4

Answers to API-Standard 650 Section 3, Design Question Number 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 API-653 Exam Prep Course

Answer C B D A B D B C D C A B D C C B C A B C D B C

BAY Technical Associates, Inc.

(610) 594-9036

Subject API Standard 650

Issue Date 06/98

Revision Date 02/00

Page 18

Answers to API-Standard 650 Section 3, Design (continued) 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47

D A B C D B C C A B C B C A D B D D C A B C D B

Should you find a mistake or disagree with any answer listed, please bring it to our attention for correction or clarification. BAY Technical Associates, Inc. has attempted to provide answers developed from paragraphs of the respective Code, Standard, or Recommended Practice. You can reach BAY Tech by phone at (610) 594-9036, by fax at (610) 594-2612, or by e-mail at [email protected].

API-653 Exam Prep Course

BAY Technical Associates, Inc.

(610) 594-9036

Subject API Standard 650

Issue Date 06/98

Revision Date 02/00

Page 19

Section 4 – Fabrication 1. What method(s) is/are permitted for straightening material? a) Pressing or other non-injurious method prior to layout or shaping b) Heating and hammering after layout or shaping c) Jacking into shape after final assembly d) Jacking into shape and holding with tack welds Reference: API-650, Paragraph 4.1.1.2 2. When plates are to be butt-welded, shearing is limited to what maximum thickness? a) 5/8th inch b) 3/8th inch c) 3/16th inch d) Shearing is not permitted Reference: API-650, Paragraph 4.1.2 3. When plates are to be used in lap-welded joints, shearing is limited to what maximum thickness a) 3/16th inch b) 3/8th inch c) 1/2 inch d) 5/8th inch Reference: API-650, Paragraph 4.1.2 4. What are the requirements regarding mill test reports according to API-650? a) No material shall be used in the construction of an AST unless it is accompanied by a mill test report b) Mill test reports are required only on shell plate material c) Mill test reports shall be furnished to the purchaser only when specified in the original purchase order d) Mill test reports shall be furnished to the purchaser prior to final acceptance of the AST Reference: API-650, Paragraph 4.2.1 5. Mill and shop inspection releases the manufacturer from responsibility for replacing defective material. a) True b) False Reference: API-650, Paragraph 4.2.2

API-653 Exam Prep Course

BAY Technical Associates, Inc.

(610) 594-9036

Subject API Standard 650

Issue Date 06/98

Revision Date 02/00

Page 20

Answers to API-Standard 650 Section 4, Fabrication Question Number 1 2 3 4 5

Answer A B D C B

Should you find a mistake or disagree with any answer listed, please bring it to our attention for correction or clarification. BAY Technical Associates, Inc. has attempted to provide answers developed from paragraphs of the respective Code, Standard, or Recommended Practice. You can reach BAY Tech by phone at (610) 594-9036, by fax at (610) 594-2612, or by e-mail at [email protected].

API-653 Exam Prep Course

BAY Technical Associates, Inc.

(610) 594-9036

Subject API Standard 650

Issue Date 06/98

Revision Date 02/00

Page 21

Section 5 – Erection 1. What welding process is not permitted when impact testing of the material is required? a) Shielded metal-arc b) Gas metal-arc c) Oxyfuel d) Submerged arc Reference: API-650, Paragraph 5.2.1.1 2. Welding may be performed manually, automatically, or semi-automatically according to the procedures described in ____ of the ASME Code. a) Section VIII, Division 1 b) B31.3 c) Section VIII, Division 2 d) Section IX Reference: API-650, Paragraph 5.2.1.1 3. No welding of any kind shall be performed when the temperature of the base metal is less than ____F a) Sixty b) Thirty-two c) Zero d) Negative fifteen Reference: API-650, Paragraph 5.2.1.2 4. When base metal thickness is greater than 1.25 inches or the base metal temperature is 0F -32F, what requirement must be met? a) The base metal within 3 inches of the starting point of the welding shall be heated to a temperature warm to the hand b) The base metal within 3 inches of the starting point of the welding shall be heated to a temperature of not less than 200F c) The base metal within 3 inches of the starting point of the welding shall be heated to a temperature of not less than 60F d) The base metal within 3 inches of the starting point of the welding shall be heated to a temperature of not less than 45F Reference: API-650, Paragraph 5.2.1.2 5. What is the maximum acceptable undercut for horizontal butt joints? a) 1/64th inch b) 1/32nd inch c) 3/64th inch d) 3/32nd inch Reference: API-650, Paragraph 5.2.1.4 API-653 Exam Prep Course

BAY Technical Associates, Inc.

(610) 594-9036

Subject API Standard 650

Issue Date 06/98

Revision Date 02/00

Page 22

6. What is the maximum acceptable undercut for vertical butt joints? a) 3/32nd inch b) 3/64th inch c) 1/32nd inch d) 1/64th inch Reference: API-650, Paragraph 5.2.1.4 7. What is the maximum permissible weld reinforcement for a vertical joint in plate thickness 1.25”? a) 3/16th inch b) 1/8th inch c) 1/4th inch d) 3/32nd inch Reference: API-650, Paragraph 5.2.1.5 8. When tack welds are used during the assembly of vertical joints, what requirement is stipulated by API-650? a) Tack welds that are to be removed do not require a qualified procedure or welder b) Tack welds that are to be left in place shall be made using a qualified procedure only c) Tack welds that are to be removed may be made using a welder in training d) Tack welds that are to be left in place shall be made using a qualified procedure and welder Reference: API-650, Paragraph 5.2.1.8 9. What is the requirement when protective coatings are used on surfaces to be welded? a) The coating must be removed prior to welding b) The coating shall be included in the welder’s performance qualification tests c) The coating shall be included in the welding procedure qualification d) The coating shall be identified on the purchase order Reference: API-650, Paragraph 5.2.1.9 10. The welding of the ____ shall be practically complete prior to welding-out the bottom joints. a) Nozzle reinforcement periphery welds b) Shell-to-bottom weld c) All vertical and horizontal shell welds d) All external attachment welds Reference: API-650, Paragraph 5.2.2.2

API-653 Exam Prep Course

BAY Technical Associates, Inc.

(610) 594-9036

Subject API Standard 650

Issue Date 06/98

Revision Date 02/00

Page 23

11. In a vertical joint of an AST, what is the maximum misalignment of 1.5” thick plate? a) Maximum misalignment is .150 inch b) Maximum misalignment is .145 inch c) Maximum misalignment is .135 inch d) Maximum misalignment is .125 inch Reference: API-650, Paragraph 5.2.3.1 12. In a horizontal joint of an AST, what is the maximum projection of an upper plate beyond the face of the plate below it? The plate thickness is .25 inch. a) Maximum projection is .0625 inch b) Maximum projection is .0500 inch c) Maximum projection is .1250 inch d) Maximum projection is .09375 inch Reference: API-650, Paragraph 5.2.3.2 13. Multi-pass weld procedures are required for circumferential and vertical joints in tank shell courses constructed of material that is more than 1.5 inches thick. What is the maximum weld pass size permitted and what is the minimum pre-heat temperature? a) No weld pass over ¾ inch with a minimum pre-heat of 300F b) No weld pass over ½ inch with a minimum pre-heat of 200F c) No weld pass over ¾ inch with a minimum pre-heat of 200F d) No weld pass over ½ inch with a minimum pre-heat of 300F Reference: API-650, Paragraph 5.2.3.4 14. The initial weld pass inside the shell of the shell-to-bottom weld shall be cleaned and examined for its entire circumference. This examination shall be visually and by which of the following? a) Magnetic particle or ultrasonic or suitable liquid penetrant process b) Magnetic particle or suitable liquid penetrant process or a vacuum box and bubble method c) Magnetic particle or radiography or vacuum box and bubble method d) Magnetic particle or acoustic emission or eddy current Reference: API-650, Paragraph 5.2.4.1 15. The required examination of the initial weld pass as described in API-650 may be waived subject to agreement between the purchaser and the AST manufacturer provided all but which of the following examinations are performed on the entire circumference of the weld(s) a) Examine either side of the finished weld by MT, PT, or right angle vacuum box b) Visually examine the initial weld (inside and outside) c) Visually examine the finished joint welded surfaces (inside and outside the shell) d) Examine either side of the finished weld by MT, PT, UT, or RT Reference: API-650, Paragraph 5.2.4.2 API-653 Exam Prep Course

BAY Technical Associates, Inc.

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Subject API Standard 650

Issue Date 06/98

Revision Date 02/00

Page 24

16. What are the dimensions of a standard vacuum testing box? a) 6” wide by 30” long b) 6” wide by 24” long c) 6” wide by 36” long d) 6” wide by 32” long Reference: API-650, Paragraph 5.3.3.1 17. In an examination of a tank’s bottom weld seams by vacuum box testing, what is the required partial vacuum pressure? a) At least 1 lbf/in2 gauge (psig) b) At least 2 lbf/in2 gauge (psig) c) At least 3 lbf/in2 gauge (psig) d) At least 4 lbf/in2 gauge (psig) Reference: API-650, Paragraph 5.3.3.4 18. If an alternative to vacuum box testing is used, whose approval is required? a) The Manufacturer b) The API-653 Inspector c) The local jurisdiction d) The purchaser Reference: API-650, Paragraph 5.3.3.5 19. After fabrication is completed but prior to filling an aboveground storage tank with test water, reinforcing plates shall be tested. What method of test and pressure shall be used? a) A hydrostatic pressure test at up to 15 lbf/in2 (psig) b) A pneumatic pressure test at up to 15 lbf/in2 (psig) c) A vacuum test at a partial pressure of 2 lbf/in2 (psig) d) A pneumatic pressure test at up to 25 lbf/in2 (psig) Reference: API-650, Paragraph 5.3.5 20. A new aboveground storage tank must be tested. If water is available for testing the shell, the tank shall be filled to any of the following levels except? a) To the maximum design liquid level b) Tanks with tight roofs, to 2 inches above the weld connecting the roof plate of compression bar to the top angle of the shell c) To overflowing to ensure all air is vented from the tank d) To a level lower than specified in a) or b) when restricted by overflows or freeboard agreement between the manufacturer and the purchaser Reference: API-650, Paragraph 5.3.6

API-653 Exam Prep Course

BAY Technical Associates, Inc.

(610) 594-9036

Subject API Standard 650

Issue Date 06/98

Revision Date 02/00

Page 25

21. The purchaser of an AST that is designed to be gas tight required the roof to be tested pneumatically. What maximum pressure would be applied to a tank with ¼” thick roof plates? a) The maximum pneumatic pressure permitted is .053 psi b) The maximum pneumatic pressure permitted is .071 psi c) The maximum pneumatic pressure permitted is .083 psi d) The maximum pneumatic pressure permitted is .091 psi Reference: API-650, Paragraph 5.3.7.1 and 3.10.2.2 Solution: 3/16” thick plate = 7.65 lb/ft 1/16” = 2.55 lb/ft 22. During the filling of an aboveground storage tank for testing, leakage was observed in a horizontal seam. Repairs are to be completed with the test water in the tank. The tank is 61 feet high and the leak is discovered 29 feet below the top of the tank. Where must the water level be during the repair? a) The water level shall be not less than 30 feet from the top of the tank b) The water level shall be not more than 32 feet from the bottom of the tank c) The water level shall be at the maximum design liquid level d) The water shall be removed from the tank Reference: API-650, Paragraph 5.4.4 23. A 60 foot high aboveground storage tank is designed with an internal floating roof. What is the maximum out-of-plumbness permitted on the 54.5 foot fixed roof columns? a) 2.94 inches b) 3.27 inches c) 1.31 inches d) 1.18 inches Reference: API-650, Paragraph 5.5.2 24. What is the maximum roundness tolerance (radius tolerance) permitted on an AST that is 110 feet in diameter and where is this tolerance applied? a) ¾” measured 10 feet above the bottom corner weld b) ¾” measured 1 foot below the top shell angle joint c) ¾” measured 1 foot above the bottom corner weld d) ¾” measured 10 feet below the top shell angle joint Reference: API-650, Paragraph 5.5.3 25. Peaking at vertical welds and banding at horizontal welds shall not exceed ____. a) 1 inch b) ¾ inch c) ½ inch d) ¼ inch Reference: API-650, Paragraph 5.5.4 (a and b) API-653 Exam Prep Course

BAY Technical Associates, Inc.

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Subject API Standard 650

Issue Date 06/98

Revision Date 02/00

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26. Peaking and banding are determined using a horizontal sweep board for peaking and a straight edge vertical sweep board for banding. What is the required length of these sweep boards? a) 48 inches b) 24 inches c) 42 inches d) 36 inches Reference: API-650, Paragraph 5.5.4 (a and b) 27. The top of the concrete ringwall (where installed) of an AST must be level within  1/8” in any 30 feet of circumference. What is the total circumferential tolerance measured from the average elevation? a) 1/8” b) 3/16” c) 1/2” d) 1/4” Reference API-650, Paragraph 5.5.5.2 (a) 28. Where a concrete ringwall is not provided, the foundation under the shell shall be level to within what tolerances? a) 1/8” in any 30’ of the circumference and 1/2” in the total circumference measured from the average elevation b) 1/8” in any 10’ of the circumference and 1/2” in the total circumference measured from the average elevation c) 1/8” in any 10’ of the circumference and 1/4” in the total circumference measured from the average elevation d) 1/8” in any 30’ of the circumference and 1/4” in the total circumference measured from the average elevation Reference API-650, Paragraph 5.5.5.2 (b) 29. For foundations specified to be sloped from a horizontal plane, the actual elevation shall not deviate from the calculated differences by more than which of the following where concrete ringwalls are provided? a) 1/8” in any 30’ of the circumference and 1/4” in the total circumference measured from the average elevation b) 1/8” in any 10’ of the circumference and 1/2” in the total circumference c) 1/8” in any 10’ of the circumference and 1/2” in the total circumference measured from the average elevation d) 1/8” in any 30’ of the circumference and 1/4” in the total circumference Reference API-650, Paragraph 5.5.5.3 (a)

API-653 Exam Prep Course

BAY Technical Associates, Inc.

(610) 594-9036

Subject API Standard 650

Issue Date 06/98

Revision Date 02/00

Page 27

30. For foundations specified to be sloped from a horizontal plane, the actual elevation shall not deviate from the calculated differences by more than which of the following where concrete ringwalls are not provided? a) 1/8” in any 30’ of the circumference and 1/2” in the total circumference measured from the average elevation b) 1/8” in any 10’ of the circumference and 1/2” in the total circumference c) 1/8” in any 10’ of the circumference and 1/4” in the total circumference measured from the average elevation d) 1/8” in any 30’ of the circumference and 1/4” in the total circumference Reference API-650, Paragraph 5.5.5.3 (b)

Answers to API-Standard 650 Section 5, Erection Question Number 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Answer C D C A B D A D C B D A C B D

Question Number 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

Answer A C D B C B A B C C D D B D B

Should you find a mistake or disagree with any answer listed, please bring it to our attention for correction or clarification. BAY Technical Associates, Inc. has attempted to provide answers developed from paragraphs of the respective Code, Standard, or Recommended Practice. You can reach BAY Tech by phone at (610) 594-9036, by fax at (610) 594-2612, or by e-mail at [email protected].

API-653 Exam Prep Course

BAY Technical Associates, Inc.

(610) 594-9036

Subject API Standard 650

Issue Date 06/98

Revision Date 02/00

Page 28

Section 6 – Methods of inspecting Joints 1. With regards to radiographic examination of welded joints, API-650 considers plates to be the same thickness when the difference in their specified or design thickness is not greater than ____. a) 1/32nd inch b) 1/16th inch c) 3/32nd inch d) 1/8th inch Reference: API-650, Paragraph 6.1 2. Which of the following joints do not require radiographic examination? a) Bottom-plate welds b) Shell butt welds c) Flush-type connections with butt welds d) Annular-plate butt welds Reference: API-650, Paragraph 6.1.1 3. Vertical butt welds in plates not greater than 3/8th inch thick, require one spot radiograph to be taken in the first _____ of completed vertical joint of each type and thickness by each welder or welding operator. a) 100 feet b) 50 feet c) 25 feet d) 10 feet Reference: API-650, Paragraph 6.1.2.2(a) 4. One additional spot radiograph shall be taken in each additional ____ of vertical joint of the same type and thickness. a) 10 feet b) 200 feet c) 100 feet d) 25 feet Reference: API-650, Paragraph 6.1.2.2(a) 5. What percentage of the selected spot radiographs must be at junctions of vertical and horizontal welded joints? a) 25 percent b) 50 percent c) 75 percent d) 15 percent Reference: API-650, Paragraph 6.1.2.2(a) API-653 Exam Prep Course

BAY Technical Associates, Inc.

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Subject API Standard 650

Issue Date 06/98

Revision Date 02/00

Page 29

6. For butt welded joints in plates over 3/8” to not over 1” in thickness are required to be radiographically examined to the same extent as plates 3/8” and less. What additional spot examination does API-650 require for these welded joints? a) 50 percent of all vertical and horizontal junctions b) 75 percent of all vertical and horizontal junctions c) 100 percent of all vertical and horizontal junctions d) 25 percent of all horizontal joints between the first and second course Reference: API-650, Paragraph 6.1.2.2(b) 7. The radiographic film for all junctions of vertical and horizontal joints shall show at least ____ of weld length on each side of the vertical intersection. a) 3 inches b) 2 inches c) 1 inch d) 4 inches Reference: API-650, Paragraph 6.1.2.2(b) and (c) 8. The butt weld around the periphery of an insert manhole or nozzle shall be ____. a) Completely examined by liquid penetrant methods b) Completely examined by ultrasonic methods c) Completely examined by magnetic particle methods d) Completely examined by radiographic methods Reference: API-650, Paragraph 6.1.2.2(d) 9. After the initial spot radiograph in the first 10 feet of horizontal butt joint, additional spot radiographs shall be taken at what increment? a) One radiograph shall be taken in each additional 200 feet b) One radiograph shall be taken in each additional 100 feet c) One radiograph shall be taken in each additional 300 feet d) One radiograph shall be taken in each additional 150 feet Reference: API-650, Paragraph 6.1.2.3 10. What is the minimum weld length that must be clearly shown on each radiograph? a) 2 inches b) 3 inches c) 6 inches d) 8 inches Reference: API-650, Paragraph 6.1.2.8

API-653 Exam Prep Course

BAY Technical Associates, Inc.

(610) 594-9036

Subject API Standard 650

Issue Date 06/98

Revision Date 02/00

Page 30

11. Personnel who perform and evaluate radiographic examinations according to API-650 shall be qualified and certified by the manufacturer as meeting the requirements as generally outlined in _____. a) Level II or Level III of ASNT SNAT-TC-1B b) Level II or Level III of ASNT SNT-TC-1B c) Level II or Level III of ASNT SNAT-TC-1A d) Level II or Level III of ASNT SNT-TC-1A Reference: API-650, Paragraph 6.1.3.2 12. The acceptance standards for radiographic examinations shall be in accordance with which of the following? a) Paragraph UW-51(b) in Section VIII of the ASME Code b) Paragraph PW-51(b) in Section I of the ASME Code c) Paragraph 341.3.2 in B31.3 Process Piping of the ASME Code d) Paragraph RB-3233 in the National Board Inspection Code (NBIC) Reference: API-650, Paragraph 6.1.5 13. If a section of weld is shown by a radiograph to be unacceptable under the provisions of API-650, paragraph 6.1.5 or the radiograph does not define the limits of the deficient welding, which of the following requirements apply? a) One additional spot shall be taken and at least 3” of weld shall be represented b) Two spots adjacent to the section shall be examined by radiography c) Two spots ten feet from each side of the original radiography shall be examined d) Two spots, chosen randomly by the purchaser’s inspector, shall be examined by radiography Reference API-650, Paragraph 6.1.6 14. After an aboveground storage tank is completed, what shall be done with the radiographs? a) They shall become the property of the insurance company b) They shall become the property of the manufacturer c) They shall become the property of the purchaser d) They shall become the property of the API Reference API-650, Paragraph 6.1.8.2 15. According to API-650, magnetic particle examination shall be performed to a written procedure. The examiner shall have his/her vision checked and be able to read which of the following? a) The magnetic particle written procedure at a distance not less than 12 inches b) A Jaeger Type 3 standard chart at a distance not less than 12 inches c) A Jaeger Type 1 standard chart at a distance not less than 12 inches d) A Jaeger Type 2 standard chart at a distance not less than 12 inches Reference API-650, Paragraph 6.2.2 and 6.2.3 (a) API-653 Exam Prep Course

BAY Technical Associates, Inc.

(610) 594-9036

Subject API Standard 650

Issue Date 06/98

Revision Date 02/00

Page 31

16. Ultrasonic examination shall be performed in accordance with a written procedure. Examiners shall be qualified and certified by the manufacturer as meeting the requirements of certification as generally outlined in which of the following? a) Level II or Level III of ASNT SNAT-TC-1B b) Level II or Level III of ASNT SNT-TC-1B c) Level II or Level III of ASNT SNAT-TC-1A d) Level II or Level III of ASNT SNT-TC-1A Reference API-650, Paragraph 6.3.2 and 6.3.3 17. Liquid penetrant examination shall be performed in accordance with a written procedure. The examiner shall have his/her vision checked and be able to read which of the following? a) The liquid penetrant written procedure at a distance not less than 12 inches b) A Jaeger Type 2 standard chart at a distance not less than 12 inches c) A Jaeger Type 1 standard chart at a distance not less than 12 inches d) A Jaeger Type 3 standard chart at a distance not less than 12 inches Reference API-650, Paragraph 6.4.2 and 6.4.3 (a) 18. Undercutting of welds attaching nozzles, manholes, cleanout openings, and permanent attachments shall not exceed which of the following? a) Undercutting shall not exceed 1/64th inch b) Undercutting shall not exceed 3/32nd inch c) Undercutting shall not exceed 1/32nd inch d) Undercutting shall not exceed 3/64th inch Reference API-650, Paragraph 6.5.1 (b)

API-653 Exam Prep Course

BAY Technical Associates, Inc.

(610) 594-9036

Subject API Standard 650

Issue Date 06/98

Revision Date 02/00

Page 32

Answers to API-Standard 650 Section 6, Methods of Inspecting Joints Question Number 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18

Answer D A D C A C B D A C D A B C D D B A

Should you find a mistake or disagree with any answer listed, please bring it to our attention for correction or clarification. BAY Technical Associates, Inc. has attempted to provide answers developed from paragraphs of the respective Code, Standard, or Recommended Practice. You can reach BAY Tech by phone at (610) 594-9036, by fax at (610) 594-2612, or by e-mail at [email protected].

API-653 Exam Prep Course

BAY Technical Associates, Inc.

(610) 594-9036

Subject API Standard 650

Issue Date 06/98

Revision Date 02/00

Page 33

Section 7 – Welding Procedure and Welder Qualifications 1. Who is responsible for preparing the welding procedure specification, performing the qualification tests, and preparing the procedure qualification record? a) The welding operator or welder b) The purchaser’s inspector c) The purchaser’s welding engineer d) The erection manufacturer or the fabrication manufacturer if other than the erection manufacturer Reference API-650, Paragraph 7.2.1.1 2. The manufacturer has the approval of the purchaser to use a material listed in API-650 but not included in the applicable table of ASME Section IX. What Group number would this material be included in if the minimum tensile strength is specified at 73,000 psi? a) This material would be included in Group number 2 b) This material would be included in Group number 1 c) This material would be included in Group number 3 d) This material can not be used in AST construction Reference API-650, Paragraph 7.2.1.3 3. When impact tests of the heat-affected zone are required, how shall this requirement be treated? a) Heat treated condition of the base metal shall be a non-essential variable b) Heat treated condition of the base metal shall be an essential variable c) Heat treated condition of the base metal shall be a supplementary essential variable d) Heat treated condition of the base metal does not need to be addressed on the welding procedure specification Reference API-650, Paragraph 7.2.1.4 4. If a protective coating has been applied to weld edge preparations, how is this condition treated on the welding procedure specification? a) The coating shall be removed and does not affect the weld and therefore does not need to be addressed b) The coating shall be included as an essential variable c) The coating shall be included as a non-essential variable d) The coating shall be included as a supplementary essential variable Reference API-650, Paragraph 7.2.1.4

API-653 Exam Prep Course

BAY Technical Associates, Inc.

(610) 594-9036

Subject API Standard 650

Issue Date 06/98

Revision Date 02/00

Page 34

5. Materials to be used at a design metal temperature below ____, the qualification of the welding procedure for vertical joints shall include impact tests of the weld metal. a) 50F b) 32F c) 60F d) 0F Reference API-650, Paragraph 7.2.2.3 6. Welder qualification tests conducted by one manufacturer shall not qualify a welder or welding operator to do work for another manufacturer. a) True b) False Reference API-650, Paragraph 7.3.1 7. Traceability to a welder or welding operator, either by welder’s identification stamp or “weld map”, is required on all but which of the following? a) Shell horizontal weld joints b) Shell vertical weld joints c) Annular plate butt welds (when annular plates are required) d) Roof plate welds and flange-to-nozzle neck welds Reference API-650, Paragraph 7.4

Answers to API-Standard 650 Section 7, Welding Procedure and Welder Qualifications Question Number 1 2 3 4 5 6 7

Answer D A C B A A D

Should you find a mistake or disagree with any answer listed, please bring it to our attention for correction or clarification. BAY Technical Associates, Inc. has attempted to provide answers developed from paragraphs of the respective Code, Standard, or Recommended Practice. You can reach BAY Tech by phone at (610) 594-9036, by fax at (610) 594-2612, or by e-mail at [email protected]. API-653 Exam Prep Course

BAY Technical Associates, Inc.

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Subject API Standard 650

Issue Date 06/98

Revision Date 02/00

Page 35

Section 8 - Marking 1. A nameplate shall identify aboveground storage tanks made in accordance with API-650. Where must this nameplate be located on the completed tank? a) This nameplate shall be attached to the tank shell adjacent to a manhole or to a manhole reinforcing plate immediately to the right of the manhole b) This nameplate shall be attached to the tank shell adjacent to a vertical weld joint at least 48” above the shell-to-bottom weld joint c) This nameplate shall be attached to the tank shell adjacent to a manhole or to a manhole reinforcing plate immediately above the manhole d) This nameplate shall be attached to the tank shell adjacent to a manhole or to a manhole reinforcing plate immediately below the manhole Reference API-650, Paragraph 8.1.2 2. The manufacturer of an AST is required to certify to the purchaser that the tank has been constructed in accordance with API-650. How is this certification accomplished? a) The manufacturer shall provide the purchaser with a U-1 Data Report form b) The manufacturer shall provide the purchaser with letter c) The manufacturer shall provide the purchaser with an ASME acceptable “Certificate of Compliance” d) The manufacturer shall provide the purchaser with a notarized certificate of compliance Reference API-650, Paragraph 8.3

Answers to API-Standard 650 Section 8, Marking Question Number 1 2

Answer C B

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API-653 Exam Prep Course

BAY Technical Associates, Inc.

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Subject API Standard 650

Issue Date 06/98

Revision Date 02/00

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Appendix A – Optional Design Basis for Small Tanks 1. What is the maximum shell thickness including corrosion allowance permitted for tanks that comply Appendix A of API-650? a) 7/8th inch b) 3/4th inch c) 5/8th inch d) 1/2 inch Reference API-650, Paragraph A.2.1 2. What is the maximum tensile strength, before the joint efficiency is applied, permitted in the design of small tanks in accordance with Appendix A of API-650? a) 21000 psi b) 21500 psi c) 21000 ksi d) 21500 ksi Reference API-650, Paragraph A.3.1 3. When computing the tension in each ring (course) of a small tank designed in accordance with Appendix A of API-650, where is this tension computed? a) The tension shall be computed 12 inches above the centerline of the course in question b) The tension shall be computed 12 inches above the centerline of the lower horizontal joint of the course in question c) The tension shall be computed 12 inches above the centerline of the tank in question d) The tension shall be computed 12 inches below the centerline of the upper horizontal joint of the course in question Reference API-650, Paragraph A.3.3 4. What joint efficiency factor shall be used in the design of small tanks designed in accordance with Appendix A of API-650 when spot radiographic examination is applied? a) 1.00 b) 0.90 c) 0.85 d) 0.70 Reference API-650, Paragraph A.3.4 5. What joint efficiency factor shall be used in the design of small tanks designed in accordance with Appendix A of API-650 when spot radiographic examination is omitted? a) 1.00 b) 0.90 c) 0.85 d) 0.70 Reference API-650, Paragraph A.3.4 API-653 Exam Prep Course

BAY Technical Associates, Inc.

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Subject API Standard 650

Issue Date 06/98

Revision Date 02/00

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Answers to API-Standard 650 Appendix A - Optional Design Basis for Small Tanks Question Number 1 2 3 4 5

Answer D A B C D

Should you find a mistake or disagree with any answer listed, please bring it to our attention for correction or clarification. BAY Technical Associates, Inc. has attempted to provide answers developed from paragraphs of the respective Code, Standard, or Recommended Practice. You can reach BAY Tech by phone at (610) 594-9036, by fax at (610) 594-2612, or by e-mail at [email protected].

API-653 Exam Prep Course

BAY Technical Associates, Inc.

(610) 594-9036

Subject API Standard 650

Issue Date 06/98

Revision Date 02/00

Page 38

Appendix B – Recommendations for Design and Construction of Foundations for Aboveground Oil Storage Tanks 1. If the owner does not specify an alternative grade slope, the finished tank grade shall be crowned from its outer periphery to its center at a slope of _____. a) The slope shall be one inch in twelve feet b) The slope shall be one inch in ten feet c) The slope shall be one inch in eight feet d) The slope shall be one inch in six feet Reference API-650, Paragraph B.3.3 2. The owner decides that an earth foundation will be installed under a new tank installation. According to API-650 Appendix B, there are specific items that an earth foundation should accomplish. Of the following, which is not one of those items? a) Earth foundations should provide a stable plane for support of the tank b) Earth foundations should limit settlement to values used in the design of the connecting piping c) Earth foundations should not settle excessively at the perimeter due to the weight of the tank d) Earth foundations should reinforced with steel reinforcing bar to prevent sagging Reference API-650, Paragraph B.4.1.1 3. When does Appendix B of API-650 recommend the use of a concrete ringwall foundations? a) When there is some doubt whether the foundation will be able carry the shell load directly b) When there will be an area in the foundation open for passing cathodic protection equipment through c) When the tank is located in an area that is easily accessible for pouring the concrete d) When the tank erector decides a concrete foundation will be easier to install Reference API-650, Paragraph B.4.2.1 4. When a concrete ringwall is designed, what is the minimum thickness permitted? a) The ringwall shall not be less than 8 inches b) The ringwall shall not be less than 10 inches c) The ringwall shall not be less than 12 inches d) The ringwall shall not be less than 14 inches Reference API-650, Paragraph B.4.2.2 5. How far below the lowest adjacent finish grade must the bottom of the ringwall, if founded on soil, be located? a) The bottom of the ringwall shall be located 1 foot below grade b) The bottom of the ringwall shall be located 1.5 feet below grade c) The bottom of the ringwall shall be located 2.5 feet below grade d) The bottom of the ringwall shall be located 2 feet below grade Reference API-650, Paragraph B.4.2.2

API-653 Exam Prep Course

BAY Technical Associates, Inc.

(610) 594-9036

Subject API Standard 650

Issue Date 06/98

Revision Date 02/00

Page 39

Answers to API-Standard 650 Appendix B - Recommendations for Design of Foundations for Aboveground Oil Storage Tanks Question Number 1 2 3 4 5

Answer B D A C D

Should you find a mistake or disagree with any answer listed, please bring it to our attention for correction or clarification. BAY Technical Associates, Inc. has attempted to provide answers developed from paragraphs of the respective Code, Standard, or Recommended Practice. You can reach BAY Tech by phone at (610) 594-9036, by fax at (610) 594-2612, or by e-mail at [email protected].

API-653 Exam Prep Course

BAY Technical Associates, Inc.

(610) 594-9036

Subject API Standard 650

Issue Date 06/98

Revision Date 02/00

Page 40

Appendix C – External Floating Roofs 1. Unless otherwise specified by the purchaser, all deck plates shall have a minimum nominal thickness of _____. a) 1/4 inch b) 1/8 inch c) 3/16 inch d) 3/32 inch Reference API-650, Paragraph C.3.3.2 2. What is the minimum slope required for the top decks of double-deck roofs and of pontoon sections? a) 3/16 inch in 12 inches b) 3/16 inch in 12 feet c) 3/16 inch in 10 inches d) 3/16 inch in 10 feet Reference API-650, Paragraph C.3.3.4 3. Pontoon type floating roofs shall have sufficient buoyancy to remain afloat on a liquid with a specific gravity of ____. a) 1.0 b) .87 c) .85 d) .70 Reference API-650, Paragraph C.3.4.1 4. What is the minimum size of roof drain required for a pan-type floating roof that is 110 feet in diameter. a) NPS 4 b) NPS 3 c) NPS 2 d) NPS 2.5 Reference API-650, Paragraph C.3.8 5. Floating roof support legs and attachments shall be designed to support the roof and a uniform live load of at least _____ per square foot. a) 100 pounds b) 75 pounds c) 50 pounds d) 25 pounds Reference API-650, Paragraph C.3.10.2

API-653 Exam Prep Course

BAY Technical Associates, Inc.

(610) 594-9036

Subject API Standard 650

Issue Date 06/98

Revision Date 02/00

Page 41

6. Manholes are required in floating roofs for access to the tank interior and for ventilation. What is the minimum nominal diameter of these manholes? a) 24 inches b) 20 inches c) 18 inches d) 15 inches Reference API-650, Paragraph C.3.11 7. If the sealing device between the outer periphery of the roof and the tank shell employs steel shoes, what material shall these shoes be made of and what is the minimum nominal thickness permitted? a) The shoes shall be made from galvanized sheet ASTM A 924 with a minimum thickness of 14 gauge b) The shoes shall be made from galvanized sheet ASTM A 924 with a minimum thickness of 16 gauge c) The shoes shall be made from galvanized sheet ASTM A 924 with a minimum thickness of 18 gauge d) The shoes shall be made from galvanized sheet ASTM A 924 with a minimum thickness of 20 gauge Reference API-650, Paragraph C.3.13 8. Drainpipe and hose systems of primary drains shall be tested with water at a pressure of ___. a) 0.5 psig b) 5.0 psig c) 50 psig d) 50 ksig Reference API-650, Paragraph C.4.5 Answers to API-Standard 650 Appendix C - External Floating Roofs

Question Number 1 2 3 4 5 6 7 8

Answer C A D B D A B C

Should you find a mistake or disagree with any answer listed, please bring it to our attention for correction or clarification. BAY Technical Associates, Inc. has attempted to provide answers developed from paragraphs of the respective Code, Standard, or Recommended Practice. You can reach BAY Tech by phone at (610) 594-9036, by fax at (610) 594-2612, or by e-mail at [email protected]. API-653 Exam Prep Course

BAY Technical Associates, Inc.

(610) 594-9036

Subject API Standard 650

Issue Date 06/98

Revision Date 02/00

Page 42

Appendix G – Structurally Supported Aluminum Dome Roofs 1. Aluminum dome roofs may be added to an existing tank. Who has the responsibility for providing reinforcement to enable the tank to support the roof? a) The fabricator if other than the erector b) The erector if other than the manufacturer c) The manufacturer d) The purchaser Reference API-650, Paragraph G.1.3.2 2. Aluminum dome roof shall be supported only from the rim of the tank. The design of the connection shall allow for thermal expansion. What is the minimum temperature range that must be used for the design? a) 110F b) 120F c) 125F d) 130F Reference API-650, Paragraph G.1.4.1 3. Aluminum panels shall be designed in accordance with ___ and Appendix G of API-650. a) AA ASM-35 b) AA ASM-135 c) AA ASM-53 d) AA ASM-315 Reference API-650, Paragraph G.3.2 4. The internal pressure of tanks with aluminum dome roofs shall not exceed the weight of the roof. In no case shall the maximum design pressure exceed ____ a) 9 psig b) 9 inches of mercury column c) 0.9 psig d) 9 inches of water column Reference API-650, Paragraph G.4.3 5. The maximum dome radius shall be ____ times the diameter of the tank. The minimum dome radius shall be ___ times the diameter of the tank unless other wise specified by the purchaser. a) 1.2 and 0.9 b) 1.2 and 0.5 c) 1.2 and 0.7 d) 1.2 and 0.8 Reference API-650, Paragraph G.6.2 API-653 Exam Prep Course

BAY Technical Associates, Inc.

(610) 594-9036

Subject API Standard 650

Issue Date 06/98

Revision Date 02/00

Page 43

Answers to API-Standard 650 Appendix G - Structurally Supported Aluminum Dome Roofs Question Number 1 2 3 4 5

Answer D B A D C

Should you find a mistake or disagree with any answer listed, please bring it to our attention for correction or clarification. BAY Technical Associates, Inc. has attempted to provide answers developed from paragraphs of the respective Code, Standard, or Recommended Practice. You can reach BAY Tech by phone at (610) 594-9036, by fax at (610) 594-2612, or by e-mail at [email protected].

API-653 Exam Prep Course

BAY Technical Associates, Inc.

(610) 594-9036

Subject API Standard 650

Issue Date 06/98

Revision Date 02/00

Page 44

Appendix H – Internal Floating Roofs 1. Internal floating roofs may be designed and built to float and rest in a reasonably flat position. A rim or skirt shall be provided around the roof periphery and all columns, ladders, and other roof openings. How far must this rim extend above the liquid? a) 3 inches b) 6 inches c) 9 inches d) 12 inches Reference API-650, Paragraph H.4.2.1 and 4.2.3 2. Internal floating roofs shall be designed to safely support at least _____. a) 500 pounds over 1 square foot b) 500 pounds over 1 square inch c) 500 pounds over 1 square yard d) 500 pounds over 1 square meter Reference API-650, Paragraph H.4.2.5 3. What is the minimum required thickness, excluding corrosion allowance, for a steel internal floating roof in contact with vapor? a) The minimum thickness shall be 0.094 inches b) The minimum thickness shall be 9 gauge c) The minimum thickness shall be 0.07 inches d) The minimum thickness shall be 7 gauge Reference API-650, Paragraph H.4.4 4. A peripheral seal shall be designed to accommodate ____ of local deviation between the floating roof and the shell. a) 2 inches b) 3 inches c) 4 inches d) 5 inches Reference API-650, Paragraph H.4.5.1 5. Which of the following is not permitted as a design for internal floating roofs in contact with the liquid? a) Double deck b) Pontoon c) Metallic Pan d) Metallic on floats Reference API-650, Paragraph H.5.1.1

API-653 Exam Prep Course

BAY Technical Associates, Inc.

(610) 594-9036

Subject API Standard 650

Issue Date 06/98

Revision Date 02/00

Page 45

6. Metallic internal roofs on floats shall be designed to be buoyant enough to support how much weight? a) Twice its dead weight b) Twice the weight of two men c) 500 pounds per square foot d) Three times its dead weight Reference API-650, Paragraph H.5.2.2 7. The maximum spacing between circulation vents shall be _____. a) 24 feet b) 32 feet c) 28 feet d) 30 feet Reference API-650, Paragraph H.6.2.2.1 8. What is the minimum number of circulation vents that must be located on the shell or fixed roof above the seal of the floating roof when the tank is full? a) 8 b) 4 c) 6 d) 2 Reference API-650, Paragraph H.6.2.2.1 9. How many and what size manholes must be provided in a fixed roof for access to the tank interior? a) At least two with a nominal diameter of 24 inches each b) At least three with a nominal diameter of 24 inches each c) At least one with a nominal diameter of 24 inches d) At least four with a nominal diameter of 24 inches each Reference API-650, Paragraph H.6.5.1 10. When specified by the purchaser, inspection hatches shall be located on the fixed roof to permit visual inspection of the seal region. What is the maximum spacing between these hatches? a) 32 feet b) 50 feet c) 75 feet d) 100 feet Reference API-650, Paragraph H.6.5.3

API-653 Exam Prep Course

BAY Technical Associates, Inc.

(610) 594-9036

Subject API Standard 650

Issue Date 06/98

Revision Date 02/00

Page 46

Answers to API-Standard 650 Appendix H - Internal Floating Roofs Question Number 1 2 3 4 5 6 7 8 9 10

Answer B A D C D A B B C C

Should you find a mistake or disagree with any answer listed, please bring it to our attention for correction or clarification. BAY Technical Associates, Inc. has attempted to provide answers developed from paragraphs of the respective Code, Standard, or Recommended Practice. You can reach BAY Tech by phone at (610) 594-9036, by fax at (610) 594-2612, or by e-mail at [email protected].

API-653 Exam Prep Course

BAY Technical Associates, Inc.

(610) 594-9036

Subject API Standard 650

Issue Date 06/98

Revision Date 02/00

Page 47

Remaining Appendixes Appendix D – Technical Inquiries This appendix provides guidance for requesting interpretations of API Standard 650. The inquiry format is specific must be followed. Basically inquiries shall be formulated in such a way that they can be answered “yes” or “no”. Appendix E – Seismic Design of Storage Tanks According the “Body of Knowledge”, question pertaining to this Appendix will be excluded on the API-653 examination. Appendix F – Design of Tanks for Small Internal Pressures According the “Body of Knowledge”, question pertaining to this Appendix will be excluded on the API-653 examination. Appendix I – Under-tank Leak Detection and Sub-grade Protection This appendix provides basic recommendations, which may be specified by the purchaser, for design and construction of tank and foundation systems that provide leak detection and sub-grade protection in the event of tank bottom leakage, and provides for tanks supported by grillage. Typically, this appendix would only be used as a guide. The body of knowledge states that questions pertaining to tanks supported by grillage will be excluded on the examination. Appendix J – Shop Assembled Storage Tanks This appendix presents requirements covering the complete assembly of tanks that do not exceed 20 feet in diameter. Appendix K – Application of the Variable-Design- Point Method According the “Body of Knowledge”, question pertaining to this Appendix will be excluded on the API-653 examination. Appendix L – API Standard 650 Storage Tank Data Sheets This appendix provides data sheets to be used by the purchaser in ordering a storage tank and by the manufacturer upon completion of construction of the tank. Appendix M – Requirements for Tanks Operating at Elevated Temperatures This appendix provides additional requirements for tanks with maximum operating temperatures from 200F to 500F.

API-653 Exam Prep Course

BAY Technical Associates, Inc.

(610) 594-9036

Subject API Standard 650

Issue Date 06/98

Revision Date 02/00

Page 48

Appendix N – Use of New Materials That Are Not Identified This appendix provides requirements for the use of new or unused plate and pipe materials that are not completely identified by this standard as complying with any listed specification. Appendix O – Recommendations for Under-Bottom Connections This appendix contains recommendations for the design and construction of under-bottom connections for storage tanks Appendix P – Allowable External Loads on Tank Shell Openings This appendix presents minimum recommendations for design of shell openings that conform to Table 3 – 8 that are subject to external piping loads. The purchaser or manufacturer may agree upon an alternative or supplemental design. According to the body of knowledge, questions pertaining to this appendix will not be asked on the examination. Appendix S – Austenitic Stainless Steel Tanks According the “Body of Knowledge”, question pertaining to this Appendix will be excluded on the API-653 examination.

API-653 Exam Prep Course

BAY Technical Associates, Inc.

(610) 594-9036

Subject API Standard 650

Issue Date 06/98

Revision Date 02/00

Page 49

NOTES

API-653 Exam Prep Course

BAY Technical Associates, Inc.

(610) 594-9036