Understanding API ICP653 Reading 7-Worksheet-04 Part1

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SECTION 9 - TANK REPAIR AND ALTERATION 9.1 General Basis for repair/alteration shall be equivalent to <strong>API</strong>-650 standard. 9.1.3 All repairs must be authorized by the Authorized Inspector or an engineer. The Authorized Inspector will establish hold points. 9.1.4 All proposed design, welding procedures, testing methods, etc., must be approved by the Authorized Inspector or an engineer. 9.1.5 Appendix F summarizes the requirements by method of examination and provides the acceptance standards, inspector qualifications, and procedure requirements. This is a good summary of NDT requirements and includes procedures from <strong>API</strong> 650, but it should not be used alone. Charlie Chong/ Fion Zhang
9.2 Removal and Replacement - Shell Plate 9.2.1 Thickness of the replacement shell plate shall not be less than the greatest nominal "t" of any plate in the same course adjoining the replacement plate except thickened insert plate. NOTE: When evaluating plate suitability, any change from the original design condition (i.e., specific gravity, pressure, liquid level and shell height) must be considered. 9.2.2 Minimum Dimensions of Replacement Shell Plate 9.2.2.1 Twelve inches (12"), or 12 times the "t" of the replacement, whichever is greater. NOTE: The replacement plate may be circular, oblong, square with rounded corners or rectangular with rounded corners, except when an entire plate is replaced. (See Fig. 9-1 for details). 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
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g. Removing and replacing part of t
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SECTION 4 - SUITABILITY FOR SERVICE
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4.2 Tank Roof Evaluation (General)
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4.2.4 Change of Service 4.2.4.1 Int
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4.3.1.3 Shell corrosion occurs in m
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EXAMPLE: A tank 38 feet tall, 150 f
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4.3.3 Minimum Thickness Calculation
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G = Highest specific gravity of the
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Sample problem for minimum thicknes
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Maximum Allowable Fill Height Calcu
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Sample problem for maximum allowabl
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Joint Efficiency for the plate For
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For Riveted Tank E is 1.0 for shell
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Table 4.3—Joint Efficiencies for
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B. Tank Shells 1. See prior comment
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4.3.6 Flaws cracks and laminations
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4.4 Tank Bottom Evaluation 4.4.1 Ge
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4.4.6 Bottom Measurements Methods (
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4.4.7.4 Critical zone thickness is
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4.4.8 Minimum "t" - Annular Plate R
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Quiz: Annular Plate t min Annular p
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API653: Table 4.5—Annular Bottom
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API653: Table 4.4—Bottom Plate Mi
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4.5.2 and 4.5.3 General a. For repa
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5.2.1 Reported conditions involving
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5.3 Assessment Procedure 5.3.1 - 5.
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6.2.2 The interval between inspecti
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6.3.3 In-service UT "t" measurement
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API651: 11.3 Cathodic Protection Su
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CP Survey 11.3 Cathodic Protection
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6.4.2 Inspection Intervals 6.4.2.1
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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
Page 139 and 140: 139 Factors to Consider in a RBI As
Page 141 and 142: 141 RBI Inspection • RBI Assessme
Page 143 and 144: 143 Comparison Direct Measurements
Page 145 and 146: 145 Questions ?
Page 147 and 148: 7.3.1.2 If plates are not identifie
Page 149: 8.5 Shell Penetrations 8.5.1 New/re
Page 153 and 154: 9.2.3 Weld Joint Design 9.2.3.1 Rep
Page 155 and 156: 9.3.1.7 Maximum size of lap patch p
Page 157 and 158: 9.3.3 Lapped patch plates may be us
Page 159 and 160: 9.7 Repair of Shell Penetrations 9.
Page 161 and 162: 9.10 Repair of Tank Bottoms (Defini
Page 163 and 164: 9.10.2.2 New bearing plates are req
Page 165 and 166: 9.10.3.1 Additional Welded-on Plate
Page 167 and 168: 9.13 Repair/Replacement of Floating
Page 169 and 170: 9.14.5 Installation Procedure 9.14.
Page 171 and 172: Hot Tapping Charlie Chong/ Fion Zha
Page 173 and 174: 10.3.2 Bottoms 10.3.2.1 Deseam lapw
Page 175 and 176: 10.3.5 Piece Marking 10.3.5.1 Shell
Page 177 and 178: 10.4.2.3 Specific welding notes: a.
Page 179 and 180: 10.4.3 Bottoms 10.4.3.2 Weld shell
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Page 183 and 184: 12.1.2 Shell Penetrations 12.1.2.1
Page 185 and 186: 12.1.6 Shell-to Bottom 12.1.6.1 Joi
Page 187 and 188: 12.2.1.4 Each butt-weld annular pla
Page 189 and 190: 12.3.2.2 Shell Repair 12.3.2.2.1 We
Page 191 and 192: 12.5 Measured Settlement (During Hy
Page 193 and 194: SECTION 13 - MARKING AND RECORD KEE
Page 195 and 196: 13.3 Certification Documentation of
Page 197 and 198: ANS: ANS: Charlie Chong/ Fion Zhang
Page 199 and 200: 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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Understanding API ICP653 Reading 7-Worksheet-04 Part1

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