Nozzle Loading Data

MIN. ALLOWABLE NOZZLE LOAD FOR PRESSURE VESSEL & EXCHANGER

(For 150 lb Flange Rating Nozzle)

Radial Force (P) - kg

Circumferential Bending Moment

(MC)-kg.m

Longitudinal Bending Moment (ML)-kg.m

Resultant Bending Moment

(MR)-kg.m Size NPS

(Inch) Sus. Ope. Sus. Ope Sus. Ope. Sus. Ope.

2 81 245 8 24 11 32 13 40 3 121 367 18 55 24 72 30 90 4 162 490 32 98 42 127 53 161 6 242 735 73 220 95 287 119 361 8 323 980 129 392 168 509 212 643

10 404 1224 202 612 263 796 331 1004 12 485 1469 291 882 378 1146 447 1446 14 566 1714 396 1200 515 1560 649 1968 16 647 1959 517 1567 672 2038 848 2571 18 727 2204 655 1984 851 2579 1074 3253 20 808 2449 808 2449 1051 3184 1325 4017 22 889 2694 978 2963 1271 3852 1604 4860 24 970 2939 1164 3527 1513 4584 1909 5784 26 1051 3184 1366 4139 1776 5380 2240 6788 28 1131 3429 1584 4800 2059 6240 2598 7873 30 1212 3673 1818 5510 2364 7163 2982 9037 32 1293 3918 2069 6269 2690 8150 3393 10283 34 1374 4163 2336 7078 3036 9201 3831 11608 36 1455 4408 2618 7935 3404 10315 4295 13014





(MC)-kg.m



(MR)-kg.m Size NPS


2 94 286 9 29 12 37 15 47 3 141 429 21 64 28 84 35 105 4 189 571 38 114 49 149 62 187 6 283 857 85 257 110 334 139 422 8 377 1143 151 457 196 594 247 750

10 471 1429 236 714 306 929 387 1172 12 566 1714 339 1029 441 1337 557 1687 14 660 2000 462 1400 601 1820 758 2296 16 754 2286 603 1829 784 2377 990 2999 18 849 2571 764 2314 993 3009 1253 3796 20 943 2857 943 2857 1226 3714 1546 4686 22 1037 3143 1141 3457 1483 4494 1871 5670 24 1131 3429 1358 4114 1765 5349 2227 6748 26 1226 3714 1593 4829 2071 6277 2613 7919 28 1320 4000 1848 5600 2402 7280 3031 9185 30 1414 4286 2121 6429 2758 8357 3479 10544 32 1509 4571 2414 7314 3138 9509 3959 11996 34 1603 4857 2725 8257 3542 10734 4469 13543 36 1697 5143 3055 9257 3971 12034 5010 15183





(MC)-kg.m



(MR)-kg.m Size NPS


2 108 327 11 33 14 42 18 54 3 162 490 24 73 32 96 40 120 4 216 653 43 131 56 170 71 214 6 323 980 97 294 126 382 159 482 8 431 1306 172 522 224 679 283 857 10 539 1633 269 816 350 1061 442 1339 12 647 1959 388 1176 504 1528 636 1928 14 754 2286 528 1600 686 2080 866 2624 16 862 2612 690 2090 897 2717 1131 3428 18 970 2939 873 2645 1135 3438 1432 4338 20 1078 3265 1078 3265 1401 4245 1767 5356 22 1185 3592 1304 3951 1695 5136 2138 6480 24 1293 3918 1552 4702 2017 6113 2545 7712 26 1401 4245 1821 5518 2367 7174 2987 9051 28 1509 4571 2112 6400 2746 8320 3464 10497 30 1616 4898 2424 7347 3152 9551 3976 12050 32 1724 5224 2759 8359 3586 10867 4524 13710 34 1832 5551 3114 9437 4048 12268 5108 15477 36 1940 5878 3491 10580 4539 13753 5726 17352





(MC)-kg.m



(MR)-kg.m Size NPS


2 121 367 12 37 16 48 20 60 3 182 551 27 83 35 107 45 136 4 242 735 48 147 63 191 80 241 6 364 1102 109 331 142 430 179 542 8 485 1469 194 588 252 764 318 964 10 606 1837 303 918 394 1194 497 1506 12 727 2204 436 1322 567 1719 716 2169 14 849 2571 594 1800 772 2340 974 2952 16 970 2939 776 2351 1009 3056 1272 3856 18 1091 3306 982 2976 1276 3868 1610 4880 20 1212 3673 1212 3673 1576 4776 1988 6025 22 1333 4041 1467 4445 1907 5778 2406 7290 24 1455 4408 1746 5290 2269 6877 2863 8676 26 1576 4776 2049 6208 2663 8071 3360 10182 28 1697 5143 2376 7200 3089 9360 3897 11809 30 1818 5510 2728 8265 3546 10745 4474 13556 32 1940 5878 3103 9404 4034 12225 5090 15424 34 2061 6245 3503 10616 4554 13801 5746 17412 36 2182 6612 3928 11902 5106 15473 6442 19521





(MC)-kg.m



(MR)-kg.m Size NPS


2 135 408 13 41 18 53 22 67 3 202 612 30 92 39 119 50 151 4 269 816 54 163 70 212 88 268 6 404 1224 121 367 158 478 199 602 8 539 1633 216 653 280 849 353 1071 10 673 2041 337 1020 438 1327 552 1674 12 808 2449 485 1469 630 1910 795 2410 14 943 2857 660 2000 858 2600 1082 3280 16 1078 3265 862 2612 1121 3396 1414 4284 18 1212 3673 1091 3306 1418 4298 1789 5422 20 1347 4082 1347 4082 1751 5306 2209 6694 22 1482 4490 1630 4939 2119 6420 2673 8100 24 1616 4898 1940 5878 2521 7641 3181 9640 26 1751 5306 2276 6898 2959 8967 3733 11313 28 1886 5714 2640 8000 3432 10400 4330 13121 30 2020 6122 3031 9184 3940 11939 4971 15062 32 2155 6531 3448 10449 4483 13584 5655 17138 34 2290 6939 3893 11796 5060 15335 6384 19347 36 2424 7347 4364 13224 5673 17192 7158 21690





(MC)-kg.m



(MR)-kg.m Size NPS


2 148 449 15 45 19 58 24 74 3 222 673 33 101 43 131 55 166 4 296 898 59 180 77 233 97 295 6 444 1347 133 404 173 525 219 663 8 593 1796 237 718 308 934 389 1178 10 741 2245 370 1122 482 1459 608 1841 12 889 2694 533 1616 693 2101 875 2651 14 1037 3143 726 2200 944 2860 1191 3608 16 1185 3592 948 2873 1233 3736 1555 4713 18 1333 4041 1200 3637 1560 4728 1968 5965 20 1482 4490 1482 4490 1926 5837 2430 7364 22 1630 4939 1793 5433 2331 7062 2940 8910 24 1778 5388 2134 6465 2774 8405 3499 10604 26 1926 5837 2504 7588 3255 9864 4107 12445 28 2074 6286 2904 8800 3775 11440 4763 14433 30 2222 6735 3334 10102 4334 13133 5468 16569 32 2371 7184 3793 11494 4931 14942 6221 18851 34 2519 7633 4282 12976 5566 16868 7023 21281 36 2667 8082 4800 14547 6241 18911 7873 23859

NOTES:

1. The attached sheets present nozzle loads, moments and sign convention. Note that shear and

torsion effects are omitted as they have negligible effect on final stress resultants.

2. Each nozzle, including those designated spare but with the exception of manways and instrument nozzles shall be designed to withstand the forces and moments specified herein. The indicated loads are to be considered to act at the shell/head to nozzle intersection and to be true normal and tangential to the shell at that point.

3. With regard to the radial load(FA), calculations shall be made firstly with the force acting radially

outwards in conjunction with the internal pressure and then with the force acting inwards. In the second instance, the internal pressure shall not be used to oppose the compressive stresses due to the force acting radially inwards; for this load condition a null pressure condition is to be considered to exist.

4. Nozzles in excess of 38NPS are to be designed to withstand the forces and moments as

computed from the formulae below, where D is the nominal nozzle diameter in inches and is the value listed against the nozzle flange rating in the table given below:-

METRIC UNITS

Longitudinal Bending Moment ML = 13.27D2 Kg-m Circumferential Bending Moment MC = 10.20D2 Kg-m Resultant Bending Moment MR = (ML2 + MC2)0.5 = 16.73D2 Kg-m Axial Tension or Compression Load FA = 204.08D Kg-m

FLANGE RATING , 150 300 600 900 1500 2500 CLASS VALUE 0.6 0.7 0.8 0.9 1.0 1.1 The loadings computed from these equations shall be considered as being caused by 67% thermal and 33% dead weight load.

P

Mx

MZ

MR = (Mx2 + Mz2 )0.5

P

ML

MC

Nozzle on Cylindrical Shell Nozzle on Formed Head

Nozzle Loading Data

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