Welded Steel Tanks for Oil Storage

More documents

Recommendations

Info

3-12 API STANDARD 650 Table 3-3—Thickness of Shell Manhole Cover Plate and Bolting Flange Column 1 Column 2 Column 3 Column 4 Column 5 Column 6 Column 7 Column 8 Column 9 Column 10 Max. Design Liquid Level m (ft) H Equivalent Pressure a kPa (psi) 500 mm (20 in.) Manhole Minimum Thickness of Cover Plate b (t c ) Minimum Thickness of Bolting Flange After Finishing b (t f ) 600 mm (24 in.) Manhole 750 mm (30 in.) 900 mm (36 in.) Manhole Manhole 500 mm (20 in.) Manhole 600 mm (24 in.) Manhole 750 mm (30 in.) 900 mm (36 in.) Manhole Manhole 6.4 (21) 63 (9.1) 8 ( 5 / 16 ) 10 ( 3 / 8 ) 11 ( 7 / 16 ) 13 ( 1 / 2 ) 6 ( 1 / 4 ) 6 ( 1 / 4 ) 8 ( 5 / 16 ) 10 ( 3 / 8 ) 8.2 (27) 80 (11.7) 10 ( 3 / 8 ) 11 ( 7 / 16 ) 13 ( 1 / 2 ) 14 ( 9 / 16 ) 6 ( 1 / 4 ) 8 ( 5 / 16 ) 10 ( 3 / 8 ) 11 ( 7 / 16 ) 9.8 (32) 96 (13.9) 10 ( 3 / 8 ) 11 ( 7 / 16 ) 14 ( 9 / 16 ) 16 ( 5 / 8 ) 6 ( 1 / 4 ) 8 ( 5 / 16 ) 11 ( 7 / 16 ) 13 ( 1 / 2 ) 12 (40) 118 (17.4) 11 ( 7 / 16 ) 13 ( 1 / 2 ) 16 ( 5 / 8 ) 18 ( 11 / 16 ) 8 ( 5 / 16 ) 10 ( 3 / 8 ) 13 ( 1 / 2 ) 14 ( 9 / 16 ) 14 (45) 137 (19.5) 13 ( 1 / 2 ) 14 ( 9 / 16 ) 16 ( 5 / 8 ) 19 ( 3 / 4 ) 10 ( 3 / 8 ) 11 ( 7 / 16 ) 13 ( 1 / 2 ) 16 ( 5 / 8 ) 16 (54) 157 (23.4) 13 ( 1 / 2 ) 14 ( 9 / 16 ) 18 ( 11 / 16 ) 21 ( 13 / 16 ) 10 ( 3 / 8 ) 11 ( 7 / 16 ) 14 ( 9 / 16 ) 18 ( 11 / 16 ) 20 (65) 196 (28.2) 14 ( 9 / 16 ) 16 ( 5 / 8 ) 19 ( 3 / 4 ) 22 ( 7 / 8 ) 11 ( 7 / 16 ) 13 ( 1 / 2 ) 16 ( 5 / 8 ) 19 ( 3 / 4 ) 23 (75) 226 (32.5) 16 ( 5 / 8 ) 18 ( 11 / 16 ) 21 ( 13 / 16 ) 24 ( 15 / 16 ) 12.5 ( 1 / 2 ) 14 ( 9 / 16 ) 18 ( 11 / 16 ) 21 ( 13 / 16 ) a Equivalent pressure is based on water loading. b For addition of corrosion allowance, see 3.7.5.2. Note: See Figure 3-4A. Thickness of Shell and Manhole Reinforcing Plate a t and T Table 3-4—Dimensions for Shell Manhole Neck Thickness For Manhole Diameter 500 mm (20 in.) Minimum Neck Thickness b,c t n mm (in.) For Manhole Diameter 600 mm (24 in.) For Manhole Diameter 750 mm (30 in.) For Manhole Diameter 900 mm (36 in.) 5 ( 3 / 16 ) 5 ( 3 / 16 ) 5 ( 3 / 16 ) 5 ( 3 / 16 ) 5 ( 3 / 16 ) 6 ( 1 / 4 ) 6 ( 1 / 4 ) 6 ( 1 / 4 ) 6 ( 1 / 4 ) 6 ( 1 / 4 ) 8 ( 5 / 16 ) 6 ( 1 / 4 ) 6 ( 1 / 4 ) 8 ( 5 / 16 ) 8 ( 5 / 16 ) 10 ( 3 / 8 ) 6 ( 1 / 4 ) 6 ( 1 / 4 ) 8 ( 5 / 16 ) 10 ( 3 / 8 ) 11 ( 7 / 16 ) 6 ( 1 / 4 ) 6 ( 1 / 4 ) 8 ( 5 / 16 ) 10 ( 3 / 8 ) 12.5 ( 1 / 2 ) 6 ( 1 / 4 ) 6 ( 1 / 4 ) 8 ( 5 / 16 ) 10 ( 3 / 8 ) 14 ( 9 / 16 ) 6 ( 1 / 4 ) 6 ( 1 / 4 ) 8 ( 5 / 16 ) 10 ( 3 / 8 ) 16 ( 5 / 8 ) 6 ( 1 / 4 ) 6 ( 1 / 4 ) 8 ( 5 / 16 ) 10 ( 3 / 8 ) 18 ( 11 / 16 ) 6 ( 1 / 4 ) 6 ( 1 / 4 ) 8 ( 5 / 16 ) 10 ( 3 / 8 ) 19 ( 3 / 4 ) 6 ( 1 / 4 ) 6 ( 1 / 4 ) 8 ( 5 / 16 ) 10 ( 3 / 8 ) 21 ( 13 / 16 ) 8 ( 5 / 16 ) 6 ( 1 / 4 ) 8 ( 5 / 16 ) 10 ( 3 / 8 ) 22 ( 7 / 8 ) 10 ( 3 / 8 ) 8 ( 5 / 16 ) 8 ( 5 / 16 ) 10 ( 3 / 8 ) 24 ( 15 / 16 ) 11 ( 7 / 16 ) 11 ( 7 / 16 ) 11 ( 7 / 16 ) 11 ( 7 / 16 ) 25 (1) 11 ( 7 / 16 ) 11 ( 7 / 16 ) 11 ( 7 / 16 ) 11 ( 7 / 16 ) 27 (1 1 / 16 ) 11 ( 7 / 16 ) 11 ( 7 / 16 ) 11 ( 7 / 16 ) 11 ( 7 / 16 ) 28 (1 1 / 8 ) 13 ( 1 / 2 ) 13 ( 1 / 2 ) 13 ( 1 / 2 ) 13 ( 1 / 2 ) 30 (1 3 / 16 ) 14 ( 9 / 16 ) 14 ( 9 / 16 ) 14 ( 9 / 16 ) 14 ( 9 / 16 ) 32 (1 1 / 4 ) 16 ( 5 / 8 ) 14 ( 9 / 16 ) 14 ( 9 / 16 ) 14 ( 9 / 16 ) 33 (1 5 / 16 ) 16 ( 5 / 8 ) 16 ( 5 / 8 ) 16 ( 5 / 8 ) 16 ( 5 / 8 ) 34 (1 3 / 8 ) 17 ( 11 / 16 ) 16 ( 5 / 8 ) 16 ( 5 / 8 ) 16 ( 5 / 8 ) 36 (1 7 / 16 ) 17 ( 11 / 16 ) 17 ( 11 / 16 ) 17 ( 11 / 16 ) 17 ( 11 / 16 ) 40 (1 1 / 2 ) 19 ( 3 / 4 ) 19 ( 3 / 4 ) 19 ( 3 / 4 ) 19 ( 3 / 4 ) a If a shell plate thicker than required is used for the product and hydrostatic loading (see 3.6), the excess shell-plate thickness, within a vertical distance both above and below the centerline of the hole in the tank shell plate equal to the vertical dimension of the hole in the tank shell plate, may be considered as reinforcement, and the thickness T of the manhole reinforcing plate may be decreased accordingly. In such cases, the reinforcement and the attachment welding shall conform to the design limits for reinforcement of shell openings specified in 3.7.2. b Reinforcement shall be added if the neck thickness is less than that shown in the column. The minimum neck thickness shall be the thickness of the shell plate or the allowable finished thickness of the bolting flange (see Table 3-3), whichever is thinner, but in no case shall the neck in a built-up manhole be thinner than the thicknesses given. If the neck thickness on a built-up manhole is greater than the required minimum, the manhole reinforcing plate may be decreased accordingly within the limits specified in 3.7.2. c For addition of corrosion allowance, see 3.7.5.2.
WELDED STEEL TANKS FOR OIL STORAGE 3-13 Table 3-5—Dimensions for Bolt Circle Diameter D b and Cover Plate Diameter D c for Shell Manholes Column 1 Column 2 Column 3 Manhole Diameter mm (in.) Bolt Circle Diameter D b mm (in.) Cover Plate Diameter D c mm (in.) 500 (20) 656 (26 1 / 4 ) 720 (28 3 / 4 ) 600 (24) 756 (30 1 / 4 ) 820 (32 3 / 4 ) 750 (30) 906 (36 1 / 4 ) 970 (38 3 / 4 ) 900 (36) 1056 (42 1 / 4 ) 1120 (44 3 / 4 ) Note: See Figure 3-4A. 3.7.2.4 The aggregate strength of the weld attaching a fitting to the shell plate, an intervening reinforcing plate, or both shall at least equal the proportion of the forces passing through the entire reinforcement that is calculated to pass through the fitting. 3.7.2.5 The aggregate strength of the welds attaching any intervening reinforcing plate to the shell plate shall at least equal the proportion of the forces passing through the entire reinforcement that is calculated to pass through the reinforcing plate. 3.7.2.6 The attachment weld to the shell along the outer periphery of a flanged fitting or reinforcing plate shall be considered effective only for the parts lying outside the area bounded by vertical lines drawn tangent to the shell opening; however, the outer peripheral weld shall be applied completely around the reinforcement. All of the inner peripheral weld shall be considered effective. The strength of the effective attachment weld shall be considered as the weld’s shear resistance at the stress value given for fillet welds in 3.10.3.5. The size of the outer peripheral weld shall be equal to the thickness of the shell plate or reinforcing plate, whichever is thinner, but shall not be greater than 38 mm (1 1 / 2 in.). When low-type nozzles are used with a reinforcing plate that extends to the tank bottom (see Figure 3-5), the size of the portion of the peripheral weld that attaches the reinforcing plate to the bottom plate shall conform to 3.1.5.7. The inner peripheral weld shall be large enough to sustain the remainder of the loading. 3.7.2.7 When two or more openings are located so that the outer edges (toes) of their normal reinforcing-plate fillet welds are closer than eight times the size of the larger of the fillet welds, with a minimum of 150 mm (6 in.), they shall be treated and reinforced as follows: a. All such openings shall be included in a single reinforcing plate that shall be proportioned for the largest opening in the group. b. If the normal reinforcing plates for the smaller openings in the group, considered separately, fall within the area limits of the solid portion of the normal plate for the largest opening, the smaller openings may be included in the normal plate for the largest opening without an increase in the size of the plate, provided that if any opening intersects the vertical centerline of another opening, the total width of the final reinforcing plate along the vertical centerline of either opening is not less than the sum of the widths of the normal plates for the openings involved. c. If the normal reinforcing plates for the smaller openings in the group, considered separately, do not fall within the area limits of the solid portion of the normal plate for the largest opening, the group reinforcing-plate size and shape shall include the outer limits of the normal reinforcing plates for all the openings in the group. A change in size from the outer limits of the normal plate for the largest opening to the outer limits of that for the smaller opening farthest from the largest opening shall be accomplished by uniform straight taper unless the normal plate for any intermediate opening would extend beyond these limits, in which case uniform straight tapers shall join the outer limits of the several normal plates. The provisions of item b with respect to openings on the same or adjacent vertical centerlines also apply in this case. 3.7.3 Spacing of Welds Around Connections See Figure 3-22 for spacing requirements listed in 3.7.3.1 through 3.7.3.4. Note: Additional weld spacing requirements exist in this standard. Other paragraphs and tables dealing with nozzles and manholes may increase the minimum spacing. Note: Whenever stress relief or thermal stress relief is used in this standard, it shall mean post-weld heat treatment. 3.7.3.1 For nonstress-relieved welds on shell plates over 12.5 mm ( 1 / 2 in.) thick, the minimum spacing between penetration connections and adjacent shell-plate joints shall be governed by the following: a. The outer edge or toe of fillet around a penetration, around the periphery of a thickened insert plate, or around the periphery of a reinforcing plate shall be spaced at least the greater of eight times the weld size or 250 mm (10 in.) from the centerline of any butt-welded shell joints. b. The welds around the periphery of a thickened insert plate, around a reinforcing insert plate, or around a reinforcing plate shall be spaced at least the greater of eight times the larger weld size or 150 mm (6 in.) from each other. 3.7.3.2 Where stress-relieving of the periphery weld has been performed prior to welding of the adjacent shell joint or where a nonstress-relieved weld is on a shell plate less than or equal to 12.5 mm ( 1 / 2 in.) thick, the spacing may be reduced to 150 mm (6 in.) from vertical joints or to the greater of 75 mm (3 in.) or 2 1 / 2 times the shell thickness from horizontal joints. The spacing between the welds around the periphery of a thickened insert plate or around a reinforcing plate shall be the greater of 75 mm (3 in.) or 2 1 / 2 times the shell thickness. 00
Page 1: Welded Steel Tanks for Oil Storage
Page 4 and 5: SPECIAL NOTES API publications nece
Page 6 and 7: FOREWORD This standard is based on
Page 9 and 10: CONTENTS Page 1 SCOPE . . . . . . .
Page 11 and 12: Page 3-4B Details of Shell Manholes
Page 13 and 14: Page Tables 1-1 Status of Appendixe
Page 15 and 16: Welded Steel Tanks for Oil Storage
Page 17 and 18: WELDED STEEL TANKS FOR OIL STORAGE
Page 19: WELDED STEEL TANKS FOR OIL STORAGE
Page 22 and 23: 2-2 API STANDARD 650 °F 60 °C 16
Page 24 and 25: 2-4 API STANDARD 650 Table 2-2—Ac
Page 26 and 27: 2-6 API STANDARD 650 Table 2-3a—M
Page 28 and 29: 2-8 API STANDARD 650 Eureka Prince
Page 30 and 31: 2-10 API STANDARD 650 2.5.3 When AS
Page 33 and 34: SECTION 3—DESIGN 3.1 JOINTS 3.1.1
Page 89 and 90: SECTION 5—ERECTION 01 ● ● ●
Page 95 and 96:
SECTION 6—METHODS OF INSPECTING J
Page 97 and 98:
WELDED STEEL TANKS FOR OIL STORAGE
Page 99:
Page 102 and 103:
7-2 API STANDARD 650 heat-affected-
Page 104 and 105:
8-2 API STANDARD 650 MANUFACTURER
Page 106 and 107:
A-2 API STANDARD 650 Table A-1a—T
Page 108 and 109:
A-4 API STANDARD 650 Table A-2a—S
Page 110 and 111:
A-6 API STANDARD 650 Table A-3a—T
Page 112 and 113:
A-8 API STANDARD 650 Table A-4a—S
Page 114 and 115:
A-10 API STANDARD 650 03 03 03 00 0
Page 116 and 117:
A-12 API STANDARD 650 Table A-5—F
Page 118 and 119:
A-14 API STANDARD 650 A.10.3 When a
Page 121 and 122:
APPENDIX B—RECOMMENDATIONS FOR DE
Page 123 and 124:
Page 125:
Page 128 and 129:
C-2 API STANDARD 650 C.3.4.3 Any pe
Page 131 and 132:
APPENDIX D—TECHNICAL INQUIRIES D.
Page 133 and 134:
Page 135 and 136:
Page 137 and 138:
Page 139 and 140:
Page 141:
Page 144 and 145:
E-2 API STANDARD 650 3 2B 3 2B 2B 3
Page 146 and 147:
E-4 API STANDARD 650 03 ● E.3.2 E
Page 148 and 149:
E-6 API STANDARD 650 10.0 Table E-3
Page 150 and 151:
E-8 API STANDARD 650 ● shall be l
Page 152 and 153:
F-2 API STANDARD 650 Does tank have
Page 154 and 155:
F-4 API STANDARD 650 F.4.2 The maxi
Page 157 and 158:
APPENDIX G—STRUCTURALLY SUPPORTED
Page 159 and 160:
Page 161 and 162:
Page 163:
Page 166 and 167:
H-2 API STANDARD 650 01 specificati
Page 168 and 169:
H-4 API STANDARD 650 01 lated from
Page 170 and 171:
H-6 API STANDARD 650 01 above the n
Page 173 and 174:
APPENDIX I—UNDERTANK LEAK DETECTI
Page 175 and 176:
Page 177 and 178:
Page 179 and 180:
Page 181:
Page 184 and 185:
J-2 API STANDARD 650 Table J-1—Ma
Page 187 and 188:
APPENDIX K—SAMPLE APPLICATION OF
Page 189 and 190:
Page 191 and 192:
Page 193 and 194:
Page 195 and 196:
Page 197:
Page 201 and 202:
API STANDARD 650 STORAGE TANK DATA
Page 203 and 204:
API STANDARD 650 STORAGE TANK DATA
Page 205:
01 TABLE L-1— INDEX OF DECISIONS
Page 208 and 209:
M-2 API STANDARD 650 Temperature Ta
Page 210 and 211:
M-4 API STANDARD 650 When the equat
Page 213 and 214:
APPENDIX O—RECOMMENDATIONS FOR UN
Page 215 and 216:
A WELDED STEEL TANKS FOR OIL STORAG
Page 217 and 218:
03 00 00 ● APPENDIX P—ALLOWABLE
Page 219 and 220:
Page 221 and 222:
Page 223 and 224:
Page 225 and 226:
Page 227 and 228:
Page 229 and 230:
Page 231 and 232:
Page 233 and 234:
Page 235 and 236:
Page 237 and 238:
Page 239 and 240:
Page 241 and 242:
Page 243 and 244:
Page 245 and 246:
Page 247 and 248:
Page 249 and 250:
Page 251 and 252:
Page 253 and 254:
Page 255 and 256:
Page 257 and 258:
Page 259 and 260:
Page 261:
Page 264 and 265:
S-2 API STANDARD 650 ● ● ●
Page 266 and 267:
S-4 API STANDARD 650 00 rial yield
Page 268 and 269:
S-6 API STANDARD 650 Table S-5—Yi
Page 271 and 272:
APPENDIX T—NDE REQUIREMENTS SUMMA
Page 273 and 274:
APPENDIX U—ULTRASONIC EXAMINATION
Page 275:
Page 278 and 279:
There’s more where this came from
Page 280:
Additional copies are available thr
show all

Welded Steel Tanks for Oil Storage

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?