Understanding API ICP653 Reading 7-Worksheet-04 Part1

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SECTION 6 - INSPECTION 6.1 General - In-service Inspection of Tanks 6.2 Inspection Frequency Considerations 6.2.1 Some factors determining inspection frequency: a. Nature of stored product. b. Visual inspection/maintenance results. c. Corrosion rates and/or allowances. d. Corrosion prevention systems. e. Previous inspection results. f. Methods-materials of construction or repair. g. Tank location (i.e., isolated, grouped, high risk areas). h. Potential for air, water or soil pollution. i. Leak detection systems. j. Change in operating mode. k. Jurisdictional requirements. l. Changes in service (including water bottoms). m. The existence of a double bottom or a release prevention barrier. Charlie Chong/ Fion Zhang
6.2.2 The interval between inspections (internal/external) is most influenced by its service history, unless special reasons indicate an earlier inspection is required. 6.2.3 Local jurisdictional regulations (i.e., vapor loss values, seal condition, leakage, proper diking and repair procedures) should be known by inspection personnel in their own locality, or should be furnished by owner-user to inspectors who function at remote locations. Charlie Chong/ Fion Zhang
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Understandings API ICP653 Reading 7
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Charlie Chong/ Fion Zhang
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Ctrl + Shift + S = save a copy Ctrl
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Charlie Chong/ Fion Zhang Fion Zhan
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API 653 Exam Administration -- Publ
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• API Recommended Practice 575, I
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Charlie Chong/ Fion Zhang http://gr
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闭门练功 Charlie Chong/ Fion
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1.1 General 1.1.1 This standard cov
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1.4 Safe Working Practices Safety p
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c. An owner or operator of one or m
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3.9 critical zone: The portion of t
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3.16 repair organization: An organi
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organizations Charlie Chong/ Fion Z
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3.21 as-built standard: The standar
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3.23 major alteration or major repa
Page 37 and 38: g. Removing and replacing part of t
Page 39 and 40: SECTION 4 - SUITABILITY FOR SERVICE
Page 41 and 42: 4.2 Tank Roof Evaluation (General)
Page 43 and 44: 4.2.4 Change of Service 4.2.4.1 Int
Page 45 and 46: 4.3.1.3 Shell corrosion occurs in m
Page 47 and 48: EXAMPLE: A tank 38 feet tall, 150 f
Page 49 and 50: 4.3.3 Minimum Thickness Calculation
Page 51 and 52: G = Highest specific gravity of the
Page 53 and 54: Sample problem for minimum thicknes
Page 55 and 56: Maximum Allowable Fill Height Calcu
Page 57 and 58: Sample problem for maximum allowabl
Page 59 and 60: Joint Efficiency for the plate For
Page 61 and 62: For Riveted Tank E is 1.0 for shell
Page 63 and 64: Table 4.3—Joint Efficiencies for
Page 65 and 66: B. Tank Shells 1. See prior comment
Page 67 and 68: 4.3.6 Flaws cracks and laminations
Page 69 and 70: 4.4 Tank Bottom Evaluation 4.4.1 Ge
Page 71 and 72: 4.4.6 Bottom Measurements Methods (
Page 73 and 74: 4.4.7.4 Critical zone thickness is
Page 75 and 76: 4.4.8 Minimum "t" - Annular Plate R
Page 77 and 78: Quiz: Annular Plate t min Annular p
Page 79 and 80: API653: Table 4.5—Annular Bottom
Page 81 and 82: API653: Table 4.4—Bottom Plate Mi
Page 83 and 84: 4.5.2 and 4.5.3 General a. For repa
Page 85 and 86: 5.2.1 Reported conditions involving
Page 87: 5.3 Assessment Procedure 5.3.1 - 5.
Page 91 and 92: 6.3.3 In-service UT "t" measurement
Page 93 and 94: API651: 11.3 Cathodic Protection Su
Page 95 and 96: CP Survey 11.3 Cathodic Protection
Page 97 and 98: 6.4.2 Inspection Intervals 6.4.2.1
Page 99 and 100: 6.4.2.1.2 As an alternative to esta
Page 101 and 102: 6.4.2.2 Subsequent Internal Inspect
Page 103 and 104: Table 4.4—Bottom Plate Minimum Th
Page 105 and 106: Quiz: Critical Zone t min t minimum
Page 107 and 108: Quiz: Bottom Plate excluding Critic
Page 109 and 110: 6.8.2 Construction Records May incl
Page 111 and 112: 6.9 Reports 6.9.1 Recommended repai
Page 113 and 114: 113 Inspection Frequency Considerat
Page 115 and 116: 115 Internal inspection is required
Page 117 and 118: API 653 Initial Inspection Interval
Page 119 and 120: 119 API 653 Initial Inspection Inte
Page 125 and 126: 125 API 653 Subsequent Inspection I
Page 129 and 130: 129 Steps for corrosion rate calcul
Page 131 and 132: 131 Finally ‐ Calculate Subsequen
Page 133 and 134: API 653 Subsequent Inspection Inter
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139 Factors to Consider in a RBI As
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141 RBI Inspection • RBI Assessme
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143 Comparison Direct Measurements
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145 Questions ?
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7.3.1.2 If plates are not identifie
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8.5 Shell Penetrations 8.5.1 New/re
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9.2 Removal and Replacement - Shell
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9.2.3 Weld Joint Design 9.2.3.1 Rep
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9.3.1.7 Maximum size of lap patch p
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9.3.3 Lapped patch plates may be us
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9.7 Repair of Shell Penetrations 9.
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9.10 Repair of Tank Bottoms (Defini
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9.10.2.2 New bearing plates are req
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9.10.3.1 Additional Welded-on Plate
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9.13 Repair/Replacement of Floating
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9.14.5 Installation Procedure 9.14.
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Hot Tapping Charlie Chong/ Fion Zha
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10.3.2 Bottoms 10.3.2.1 Deseam lapw
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10.3.5 Piece Marking 10.3.5.1 Shell
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10.4.2.3 Specific welding notes: a.
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10.4.3 Bottoms 10.4.3.2 Weld shell
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SECTION 11 - WELDING 11.1 Welding Q
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12.1.2 Shell Penetrations 12.1.2.1
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12.1.6 Shell-to Bottom 12.1.6.1 Joi
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12.2.1.4 Each butt-weld annular pla
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12.3.2.2 Shell Repair 12.3.2.2.1 We
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12.5 Measured Settlement (During Hy
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SECTION 13 - MARKING AND RECORD KEE
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13.3 Certification Documentation of
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ANS: ANS: Charlie Chong/ Fion Zhang
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B.2.2.3 Differential Settlement (ou
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B.2.3 Edge settlement B.2.3.1 Occur
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APPENDIX C CHECKLISTS FOR TANK INSP
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APPENDIX E TECHNICAL INQUIRIES This
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G.2.6 qualification test: The demon
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G.3 An explanation of Tank Bottom E
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API 653 CODE QUIZ Charlie Chong/ Fi
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Q3. A condition that exists when it
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Q7. What primary factor determines
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Q11. What type of contour cut (if a
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Q15. API-653 (Section 12) requires
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Q16. Calculate the minimum thicknes
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Q19. A bulge is found on the tank f
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Q16. d (1/2") [Paragraph 4.3.3 page
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Section 2 650 Summary 2007 Charlie
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Good Luck! Charlie Chong/ Fion Zhan
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