eil piping report
TRANSCRIPT
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Template No. 5-0000-0001-T2 Rev. 1 Copyrights EIL All rights reserved
Document No.
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Rev. No. 0
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Retrofitting Scheme for Piping
Table of Contents
1.0 Introduction ...................................................................................................................... 62.0 Piping loop having Document number A375-000-16-43-ADC-0018 ................................. 7
2.1 PROPOSED RETROFITTING ...................................................................................... 72.2 RESULTS AFTER RETROFITTING ............................................................................. 72.3 CONCLUSION ............................................................................................................. 9
3.0 Piping loop having Document number A375-000-16-43-ADC-0020 ............................... 103.1 PROPOSED RETROFITTING .................................................................................... 103.2 RESULTS AFTER RETROFITTING ........................................................................... 103.3 CONCLUSION ........................................................................................................... 12
4.0 Piping loop having Document number A375-000-16-43-ADC-0044 .............................. 134.1 PROPOSED RETROFITTING .................................................................................... 134.2 RESULTS AFTER RETROFITTING ........................................................................... 134.3 CONCLUSION ........................................................................................................... 18
5.0 Piping loop having Document number A375-000-16-43-ADC-0046 .............................. 195.1 PROPOSED RETROFITTING .................................................................................... 195.2 RESULTS AFTER RETROFITTING ........................................................................... 195.3 CONCLUSION ........................................................................................................... 22
6.0 Piping loop having Document number A375-000-16-43-ADC-0049 .............................. 236.1 PROPOSED RETROFITTING .................................................................................... 236.2 RESULTS AFTER RETROFITTING ........................................................................... 23
6.3 CONCLUSION ............................................................................................................... 257.0 Piping loop having Document number A375-000-16-43-ADC-0051 .............................. 26
7.1 PROPOSED RETROFITTING .................................................................................... 267.2 RESULTS AFTER RETROFITTING ........................................................................... 267.3 CONCLUSION ........................................................................................................... 30
8.0 Piping loop having Document number A375-000-16-43-ADC-0054 ............................... 318.1 PROPOSED RETROFITTING .................................................................................... 318.2 RESULTS AFTER RETROFITTING ........................................................................... 318.3 CONCLUSION ........................................................................................................... 34
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Retrofitting Scheme for Piping
9.0 Piping loop having Document number A375-000-16-43-ADC-0056 .............................. 359.1 PROPOSED RETROFITTING .................................................................................... 359.2 RESULTS AFTER RETROFITTING ........................................................................... 359.3 CONCLUSION ........................................................................................................... 37
10.0 Piping loop having Document number A375-000-16-43-ADC-0059 ............................... 3810.1 PROPOSED RETROFITTING .................................................................................... 3810.2 SPRING DETAILS: .................................................................................................... 3810.3 CONCLUSION ........................................................................................................... 42
11.0 Piping loop having Document number A375-000-16-43-ADC-0062 ............................... 4311.1
PROPOSED RETROFITTING .................................................................................... 43
11.2 RESULTS AFTER RETROFITTING ........................................................................... 4311.3 CONCLUSION ........................................................................................................... 45
12.0 Piping loop having Document number A375-000-16-43-ADC-0063 .............................. 4612.1 PROPOSED RETROFITTING .................................................................................... 4612.2 RESULTS AFTER RETROFITTING ........................................................................... 4612.3 CONCLUSION ........................................................................................................... 50
13.0 Piping loop having Document number A375-000-16-43-ADC-0065 .............................. 5113.1 PROPOSED RETROFITTING .................................................................................... 5113.2 RESULTS AFTER RETROFITTING ........................................................................... 5113.3 CONCLUSION ........................................................................................................... 53
14.0 Piping loop having Document number A375-000-16-43-ADC-0067 .............................. 5414.1 PROPOSED RETROFITTING .................................................................................... 5414.2
RESULTS AFTER RETROFITTING ........................................................................... 54
14.3 CONCLUSION ........................................................................................................... 56
15.0 Piping loop having Document number A375-000-16-43-ADC-0068 .............................. 5715.1 PROPOSED RETROFITTING .................................................................................... 5715.2 RESULTS AFTER RETROFITTING ........................................................................... 5715.3 CONCLUSION ........................................................................................................... 57
16.0 Piping loop having Document number A375-000-16-43-ADC-0069 .............................. 5816.1 PROPOSED RETROFITTING .................................................................................... 58
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Retrofitting Scheme for Piping
16.2 RESULTS AFTER RETROFITTING ........................................................................... 5816.3 CONCLUSION ........................................................................................................... 60
17.0 Piping loop having Document number A375-000-16-43-ADC-0070 ............................... 6117.1 PROPOSED RETROFITTING .................................................................................... 6117.2 RESULTS AFTER RETROFITTING ........................................................................... 6117.3 CONCLUSION ........................................................................................................... 63
18.0 Piping loop having Document number A375-000-16-43-ADC-0071 ............................... 6418.1 PROPOSED RETROFITTING .................................................................................... 6418.2 RESULTS AFTER RETROFITTING ........................................................................... 6418.3 CONCLUSION ........................................................................................................... 67
19.0 Piping loop having Document number A375-000-16-43-ADC-0072 .............................. 6819.1 PROPOSED RETROFITTING .................................................................................... 6819.2 RESULTS AFTER RETROFITTING ........................................................................... 6819.3 CONCLUSION ........................................................................................................... 69
20.0 Piping loop having Document number A375-000-16-43-ADC-0073 ............................... 7020.1 PROPOSED RETROFITTING .................................................................................... 7020.2 RESULTS .................................................................................................................. 7020.3 CONCLUSION ........................................................................................................... 72
21.0 Piping loop having Document number A375-000-16-43-ADC-0081 ............................... 7321.1 PROPOSED RETROFITTING .................................................................................... 7321.2 RESULTS AFTER RETROFITTING ........................................................................... 7321.3 CONCLUSION ........................................................................................................... 78
22.0 Piping loop having Document number A375-000-16-43-ADC-0089 .............................. 7922.1 PROPOSED RETROFITTING .................................................................................... 7922.2 RESULTS AFTER RETROFITTING ........................................................................... 7922.3 CONCLUSION ........................................................................................................... 80
23.0 Piping loop having Document number A375-000-16-43-ADC-0090 .............................. 8123.1 PROPOSED RETROFITTING .................................................................................... 8123.2 RESULTS AFTER RETROFITTING ........................................................................... 8123.3 CONCLUSION ........................................................................................................... 82
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Retrofitting Scheme for Piping
24.0 Piping loop having Document number A375-000-16-43-ADC-0093 .............................. 8324.1 PROPOSED RETROFITTING .................................................................................... 8324.2 RESULTS AFTER RETROFITTING ........................................................................... 8324.3 CONCLUSION ........................................................................................................... 85
25.0 Piping loop having Document number A375-000-16-43-ADC-0095 .............................. 8625.1 PROPOSED RETROFITTING .................................................................................... 8625.2 RESULTS AFTER RETROFITTING ........................................................................... 8625.3 CONCLUSION ........................................................................................................... 88
26.0 Piping loop having Document number A375-000-16-43-ADC-0096 .............................. 8926.1
PROPOSED RETROFITTING .................................................................................... 89
26.2 RESULTS AFTER RETROFITTING ........................................................................... 8926.3 CONCLUSION ........................................................................................................... 91
27.0 Piping loop having Document number A375-000-16-43-ADC-0097 .............................. 9227.1 PROPOSED RETROFITTING .................................................................................... 9227.2 RESULTS AFTER RETROFITTING ........................................................................... 9227.3 CONCLUSION ........................................................................................................... 93
APPENDIX ( EIL Piping Support Standard )....94
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Retrofitting Scheme for Piping
1.0 Introduction
Piping loops had been stress analyzed according to supports marked in isometrics provided by
HWB and twenty-six loops did not qualify the design adequacy re-evaluation. For these loops,
retrofitting has been proposed. The piping stress analysis has been carried out again for these
loops incorporating the proposed retrofitting. This report presents the retrofitting arrangements,
the results and conclusions of the piping stress analysis after incorporating these changes in
these twenty-six piping loops. The isometrics marked with retrofit modifications are in a separate
CD. The relevant EIL piping support standards are included in the Appendix and may be
referred for the support details.
The following points may be noted with regard to retrofitting
1. The analysis has been carried out at design temperature, when normally wind and
seismic should be analyzed at operating conditions. Further the sustained and thermal
load cases should also be analysed.
2. The plant was designed as per B31.3 but the re-evaluation was requested to be carried
out as per ASME Section III, ND Class. Stress in piping has been checked as per ASME
Section-III ND Class. However HWB may ensure flexibility checking as per ANSI B 31.3,
before retrofitting as it was the original code for piping design in HWP (Manuguru).
3. The status of guides and other supporting (especially those on pipe racks were not
known, as isometrics for the same was not available, and some assumptions have been
made). The same needs to be first confirmed at site before any modification can be
carried out.
It should be noted that modifications in a plant running successfully for three decades
should be carried out with extreme care. This is applicable more so for piping because
guiding, restraining or strengthening a particular section may result in transfer of loads to
another section of piping or equipment nozzles not only for wind and seismic cases but
thermal case as well.
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Retrofitting Scheme for Piping
2.0 Piping loop having Document number A375-000-16-43-ADC-0018
2.1 PROPOSED RETROFITTING
Table 2.1 Proposed modifications in supports
NodeNo.
Previous support New Support Remarks
3250 S3-A-1-6 S3-A-2-6 Guide in +Z with 52 mm gap, Guide -Z
2.2 RESULTS AFTER RETROFITTING
Table 2.2 Maximum stresses for design and wind (static) load cases
LoadCaseNo.
CAESAR Load Case DescriptionStresses (psi) % of
AllowableStatus
Actual Allow.
4 W+P1+F1 (SUS) SUSTAINED 14,954 22,322 67.0 OK
17 DS3-DS4 (EXP) THERMAL 26,846 28,286 95.0 OK
18 ST4+ST13 (OCC) +X WIND+ SUS 24,312 24,749 98.0 OK
19 ST4+ST14 (OCC) -X WIND+ SUS 25,835 24,749 104.0 MARGINAL
20 ST4+ST15 (OCC) +Z WIND+ SUS 25,278 24,749 102.0 MARGINAL
21 ST4+ST16 (OCC) -Z WIND+ SUS 22,471 24,749 91 OK
Table 2.3 Maximum stresses for seismic (dynamic) load cases
LoadCaseNo.
Load Case DescriptionStresses (psi)
% OFAllowable
StatusActual Allow.
6 W+P1+F1+SEISMIC (OCC) 24,127 24,749 98 OK
7 W+P1+F1+WIN1+SEISMIC (OCC) 57,339 24,749 232NOT
QUALIFIED
8 W+P1+F1+WIN2+SEISMIC (OCC) 52,246 24,749 211NOT
QUALIFIED
9 W+P1+F1+WIN3+SEISMIC (OCC) 29,998 24,749 121NOT
QUALIFIED
10 W+P1+F1+WIN4+SEISMIC (OCC) 50,396 24,749 204NOT
QUALIFIED
The nozzle loadings of connecting equipments obtained by the piping analysis are given below.
The forces are in kgf and the moments are in kgf-m.
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Retrofitting Scheme for Piping
DESIGN AND WIND (STATIC)
NODE: 1 (1STSTAGE COLD TOWER C106/206 NOZZLE F2)
NODE Load Case FX Kg FY Kg FZ Kg MX Kg.m. MY Kg.m. MZ Kg.m.
1 3 (OPE) -193 5996 131 -5138.3 -37.4 -127.3
4 (SUS) 12 5592 127 -4866.8 6.7 112.2
5 (OPE) -33 5979 134 -5127.6 64.9 -141.8
6 (OPE) -256 5909 184 -5115.6 -54.8 -195.2
7 (OPE) -164 6022 294 -5376.0 -132.2 -93.6
8 (OPE) -172 5961 110 -5185.2 9.5 -103.3
MAX -256/6 6022/7 294/7 -5376.0/7 -132.2/7 -195.2/6
NODE: 23400 (12-E-109/209B NOZZLE N1)
23400 3 (OPE) 545 141 -391 831.8 149.5 2.5
4 (SUS) 20 83 -5 155.1 -26.0 -566.6
5 (OPE) -78 50 -227 501.3 491.6 -836.9
6 (OPE) 1050 209 -460 1011.8 -222.5 677.9
7 (OPE) 621 234 -819 1234.5 919.5 444.3
8 (OPE) 261 -23 274 22.3 -873.4 -805.5
MAX 1050/6 234/7 -819/7 1234.5/7 919.5/7 -836.9/5
NODE: 24300 (12-E-110/210 NOZZLE N2)
24300 3 (OPE) -127 -231 257 378.6 -80.7 -56.0
4 (SUS) -2 78 15 10.1 1.4 0.1
5 (OPE) -223 -261 230 372.3 -172.1 -78.6
6 (OPE) 2 -159 246 358.1 31.5 -55.3
7 (OPE) -103 -49 -38 197.4 -0.1 -29.1
8 (OPE) -110 -414 487 526.4 -84.5 -97.2
MAX -223/5 -414/8 487/8 526.4/8 -172.1/5 -97.2/8
NODE: 24400 (12-E-110/210 NOZZLE N1)
24400 3 (OPE) 677 -227 205 65.1 209.0 360.8
4 (SUS) 8 -51 15 68.9 -12.3 -30.8
5 (OPE) 209 -165 145 50.8 0.6 23.4
6 (OPE) 1042 -289 223 129.5 391.7 617.0
7 (OPE) 449 -182 -95 208.7 366.1 187.1
8 (OPE) 856 -316 452 -71.4 108.5 455.1
MAX 1042/6 -316/8 452/8 208.7/7 391.7/6 617.0/6
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Retrofitting Scheme for Piping
SEISMIC CASES (DYNAMIC)
Load Case 6. Design + Seismic
NODE FX FY FZ MX MY MZ
1 506 6244 233 5374 271 477
23400 878 251 720 1284 896 507
24300 224 352 345 435 269 99
24400 938 321 342 169 447 555
Load Case 7. Design +X Wind + Seismic
1 345 6227 237 5364 299 492
23400 411 160 556 953 1238 1342
24300 319 382 318 429 360 12224400 470 259 281 154 239 218
Load Case 8. Design -X Wind + Seismic
1 569 6157 287 5352 289 545
23400 1383 318 788 1464 969 1183
24300 99 280 335 415 219 99
24400 1303 383 359 233 630 811
Load Case 9. Design +Z Wind + Seismic
1 477 6270 396 5612 366 443
23400 954 343 1148 1687 1666 949
24300 199 170 126 254 188 72
24400 710 275 231 312 604 381
Load Case 10. Design -Z Wind + Seismic
1 485 6209 213 5421 243 453
23400 594 133 603 474 1620 1310
24300 207 535 575 583 272 140
24400 1116 409 588 175 347 649
2.3 CONCLUSION
The piping stress analysis has been carried out for the piping from nozzles N1 & N2 of
Exchangers (12-E-109/209 & 12-E-110/210) to nozzle F2 of 1st Stage Cold Tower (12-C-
106/206) after proposed retrofitting modifications.
The results indicate that the stresses for the individual wind and seismic load cases are
marginally exceeding the allowable stresses. Hence the system may be deemed to qualify the
design adequacy re-evaluation after retrofitting.
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Retrofitting Scheme for Piping
3.0 Piping loop having Document number A375-000-16-43-ADC-0020
3.1 PROPOSED RETROFITTING
Table 3.1 Suggested modifications in supports
NodeNo.
Previous support New Support Remarks
5340B42-1-325 & S4-A-
1-10
B42-1-325 , S4-A-2-10 & S4-A-
5-10
Cross Guide in X with 14 mm gap, Guide Z with 71.5mm gap
8010 L7A-2-1950-S L6-2-1950 Guide to be released
3.2 RESULTS AFTER RETROFITTING
Table 3.2 Maximum stresses for design and wind (static) load cases
LoadCaseNo.
CAESAR Load Case DescriptionStresses (psi) % of
AllowableStatus
Actual Allow.
4 W+P1+F1 (SUS) SUSTAINED 17,715 22,322 79.0 OK
17 DS3-DS4 (EXP) THERMAL 17,713 30,995 57.0 OK
18 ST4+ST13 (OCC) +X WIND+ SUS 19,201 24,749 78.0 OK
19 ST4+ST14 (OCC) -X WIND+ SUS 22,162 24,749 90.0 OK
20 ST4+ST15 (OCC) +Z WIND+ SUS 23,232 24,749 94.0 OK
21 ST4+ST16 (OCC) -Z WIND+ SUS 19,617 24,749 79.0 OK
Table 3.3 Maximum stresses for seismic (dynamic) load cases
LoadCaseNo.
Load Case DescriptionStresses (psi)
% OFAllowable
StatusActual Allow.
6 W+P1+F1+SEISMIC (OCC) 23,534 24,749 95.0 OK
7 W+P1+F1+WIN1+SEISMIC (OCC) 20,084 24,749 81.0 OK
8 W+P1+F1+WIN2+SEISMIC (OCC) 20,951 24,749 85.0 OK
9 W+P1+F1+WIN3+SEISMIC (OCC) 22,431 24,749 91.0 OK
10 W+P1+F1+WIN4+SEISMIC (OCC) 19,432 24,749 79.0 OK
The nozzle loadings of connecting equipments obtained by the piping analysis are given below.
The forces are in kgf and the moments are in kgf-m.
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Retrofitting Scheme for Piping
DESIGN AND WIND (STATIC)
NODE: 5 (12-V-102/202_F2)
NODE 5 Load Case FX Kg FY Kg FZ Kg MX Kg.m. MY Kg.m. MZ Kg.m.
3 (OPE) -3 -826 112 -738.2 -0.0 0.0
4 (SUS) -0 -715 82 73.0 -0.0 -0.0
5 (OPE) -1 -503 289 -963.4 -0.0 0.0
6 (OPE) -6 -1199 -7 -486.3 -0.0 0.0
7 (OPE) -3 -1013 256 -641.3 -0.0 0.0
8 (OPE) -3 -576 -169 -619.8 -0.0 0.0
MAX -6/6 -1199/6 289/5 -963.4/5 -0.0/7 0.0/8
NODE: 16400 (EXCHANGER 12-E-102/202B_N1)
16400 3 (OPE) 309 1158 -311 637.1 -416.5 411.3
4 (SUS) -51 791 127 -224.6 -185.2 111.1
5 (OPE) 71 1160 -310 670.2 -243.1 128.2
6 (OPE) 608 1232 -315 691.2 -626.8 747.0
7 (OPE) 380 1414 -601 825.9 -316.9 764.7
8 (OPE) 262 913 15 422.1 -459.0 91.4
MAX 608/6 1414/7 -601/7 825.9/7 -626.8/6 764.7/7
NODE: 18400 (EXCHANGER 12-E-104/204B_N1)
18400 3 (OPE) 426 1160 -303 1307.3 -337.1 155.6
4 (SUS) 13 498 -24 263.1 14.0 -126.3
5 (OPE) 161 1198 -308 1336.1 -104.0 -135.5
6 (OPE) 665 1128 -301 1287.3 -518.6 417.2
7 (OPE) 456 1386 -564 1500.3 -254.8 433.7
8 (OPE) 392 883 -4 1060.5 -532.7 -171.6
MAX 665/6 1386/7 -564/7 1500.3/7 -532.7/8 433.7/7
SEISMIC CASES (DYNAMIC)
Load Case 6. Design + Seismic
NODE FX FY FZ MX MY MZ
5 4 1257 676 1214 0 016400 652 1510 613 978 734 104618400 810 1352 709 1829 659 665
Load Case 7. Design +X Wind + Seismic
5 2 934 853 1439 0 016400 414 1512 612 1011 561 76318400 546 1390 714 1858 426 645
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Retrofitting Scheme for Piping
Load Case 8. Design -X Wind + Seismic
5 7 1630 571 962 0 016400 951 1585 617 1032 945 138218400 1049 1320 707 1809 841 926
Load Case 9. Design +Z Wind + Seismic
5 4 1444 820 1117 0 016400 723 1767 903 1167 635 140018400 840 1579 970 2022 577 943
Load Case 10. Design -Z Wind + Seismic
5 4 1007 733 1096 0 0
16400 605 1266 317 763 777 72618400 776 1075 410 1582 855 681
3.3 CONCLUSION
The piping stress analysis has been carried out for the piping from the nozzle N1 of
Exchangers (12-E-102/202 & 12-E-104/204) TO nozzle F2 of 12-V-102/202 after proposed
retrofitting modifications.
The results indicate that the stresses for the individual wind and seismic load cases are within
the allowable stresses. Hence the system may be deemed to qualify the design adequacy re-
evaluation after retrofitting.
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Retrofitting Scheme for Piping
4.0 Piping loop having Document number A375-000-16-43-ADC-0044
4.1 PROPOSED RETROFITTING
Table 4.1 Suggested modifications in supports
NodeNo.
Previous support New SupportRemarks
3210 --- S3-A-2-4 inZ & 29.5 mm gap in +Z
3300 --- S3-A-2-4
5110 --- S1-A--4 in +X & withoutY & -X guide
4.2 RESULTS AFTER RETROFITTING
Table 4.2 Maximum stresses for design and wind (static) load cases according to ASME ND
LoadCaseNo.
CAESAR Load Case DescriptionStresses (psi) % of
AllowableStatus
Actual Allow.
4 W+P1+F1 (SUS) SUSTAINED 21079.4 22322 94.4 OK
13 DS3-DS4 (EXP) THERMAL 53740.2 33281.4 161.5Not
Qualified
18 ST4+ST14 (OCC) +X WIND+SEISMIC 23367.7 24749.1 94.4 OK
19 ST4+ST15 (OCC) -X WIND+SEISMIC 24399 24749.1 98.6 OK
20 ST4+ST16 (OCC) +Z WIND+SEISMIC 25415.5 24749.1 102.7 Marginal
21 ST4+ST17 (OCC) -Z WIND+SEISMIC 23560.5 24749.1 95.2 OK
Table 4.3 Maximum stresses for design and wind (static) load cases according to ASME B 31.3
LoadCaseNo.
CAESAR Load Case DescriptionStresses (psi) % of
AllowableStatus
Actual Allow.
4 W+P1+F1 (SUS) SUSTAINED 13916.4 14499.4 96.0 OK
13 DS3-DS4 (EXP) THERMAL 32186.2 34622.7 93 OK
18 ST4+ST14 (OCC) +X WIND+SEISMIC 27913.4 26190.9 106.6 Marginal
19 ST4+ST15 (OCC) -X WIND+SEISMIC 23562.8 26190.9 90.0 OK
20 ST4+ST16 (OCC) +Z WIND+SEISMIC 15652 19284.2 81.2 OK
21 ST4+ST17 (OCC) -Z WIND+SEISMIC 14268.1 19284.2 74 OK
The nozzle loadings of connecting equipments obtained by the piping analysis are given below.
The forces are in kgf and the moments are in kgf-m.
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Retrofitting Scheme for Piping
Table 4.4 Maximum stresses for seismic (dynamic) load cases according to ASME ND
LoadCaseNo.
Load Case DescriptionStresses (psi)
% OFAllowable
StatusActual Allow.
6 W+P1+F1+SEISMIC (OCC) 27051.2 24749 109.3 Marginal7 W+P1+F1+WIN1+SEISMIC (OCC) 23936.3 24749 96.7 OK
8 W+P1+F1+WIN2+SEISMIC (OCC) 23249.2 24749 93.9 OK
9 W+P1+F1+WIN3+SEISMIC (OCC) 23080.5 24749 93.3 OK
10 W+P1+F1+WIN4+SEISMIC (OCC) 25673.2 24749 103.7 Marginal
Table 4.5 Maximum stresses for seismic (dynamic) load cases according to ASME B 31.3
LoadCaseNo.
Load Case DescriptionStresses (psi)
% OFAllowable
StatusActual Allow.
6 W+P1+F1+SEISMIC (OCC) 20303 19284 105.3 Marginal7 W+P1+F1+WIN1+SEISMIC (OCC) 20507.6 19284 106.3 Marginal
8 W+P1+F1+WIN2+SEISMIC (OCC) 20169.4 19284 104.6 Marginal
9 W+P1+F1+WIN3+SEISMIC (OCC) 19571.1 19284 101.5 Marginal
10 W+P1+F1+WIN4+SEISMIC (OCC) 29368.5 19284 152.3Not
Qualified
The nozzle loadings of connecting equipments obtained by the piping analysis are given below.
The forces are in kgf and the moments are in kgf-m.
DESIGN AND WIND (STATIC)
NODE: 3 (F1 NOZZLE OF COLUMN 12-V-103)
CASE TYPE FX FY FZ MX MY MZ
3 (OPE) 361 199 -1 4.3 -3.7 -487.0
4 (SUS) 31 -81 -0 0.9 0.9 -0.6
5 (OPE) 431 200 -10 15.7 -8.1 -491.1
6 (OPE) 305 207 6 -4.9 0.5 -493.0
7 (OPE) 355 196 167 22.6 198.5 -482.2
8 (OPE) 365 201 -170 -13.7 -205.7 -488.8
MAX 431/5 207/6 -170/8 22.6/7 -205.7/8 -493.0/6
NODE: 13120 (DISCHARGE NOZZLE OF PUMP 12-P-118/218A)
3 (OPE) 450 467 560 443.6 -328.3 -527.7
4 (SUS) -7 -245 -94 -69.9 -53.0 9.6
5 (OPE) 470 477 567 448.8 -334.5 -541.5
6 (OPE) 430 458 554 438.3 -322.1 -513.9
7 (OPE) 480 509 618 478.0 -320.8 -562.3
8 (OPE) 420 425 501 408.1 -335.7 -493.1MAX 480/7 509/7 618/7 478.0/7 -335.7/8 -562.3/7
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Retrofitting Scheme for Piping
NODE: 12120 (DISCHARGE NOZZLE OF PUMP 12-P-118/218S)
3 (OPE) 380 406 520 397.4 1.2 -482.2
4 (SUS) 0 -246 -78 -57.7 -43.8 7.05 (OPE) 398 399 514 391.1 -7.6 -492.9
6 (OPE) 362 412 525 403.6 9.9 -471.4
7 (OPE) 517 600 704 527.7 24.7 -621.7
8 (OPE) 292 245 333 295.1 -47.8 -355.8
MAX 517/7 600/7 704/7 527.7/7 -47.8/8 -621.7/7
NODE: 8560 (DISCHARGE NOZZLE OF PUMP 12-P-127/227)
3 (OPE) 26 -100 -310 -65.0 -79.3 17.5
4 (SUS) -48 -31 -25 -5.6 3.2 9.4
5 (OPE) 139 -147 -333 -69.6 -52.5 0.1
6 (OPE) -104 -34 -287 -60.7 -93.2 36.8
7 (OPE) -33 -109 -177 -40.6 -19.0 28.8
8 (OPE) 75 -99 -443 -89.5 -134.6 8.6
MAX 139/5 -147/5 -443/8 -89.5/8 -134.6/8 36.8/6
NODE: 5530 (DISCHARGE NOZZLE OF PUMP 12-P-128/228)
3 (OPE) 90 -53 120 72.4 137.3 -107.3
4 (SUS) 4 -30 1 1.1 0.4 -0.0
5 (OPE) 118 -59 148 82.9 162.4 -123.9
6 (OPE) 62 -54 126 66.1 133.9 -86.7
7 (OPE) 98 -50 129 86.9 163.2 -136.1
8 (OPE) 82 -58 124 59.0 118.0 -76.3
MAX 118/5 -59/5 148/5 86.9/7 163.2/7 -136.1/7
NODE: 4 (N6 NOZZLE OF 12-E-112A)
3 (OPE) -631 3349 454 2400.3 528.9 2185.5
4 (SUS) 28 -286 18 -6.2 -22.7 -22.7
5 (OPE) -564 3350 465 2408.6 490.0 2140.0
6 (OPE) -698 3348 443 2391.9 567.8 2231.0
7 (OPE) -634 3352 533 2471.4 380.9 2173.6
8 (OPE) -631 3347 378 2331.6 676.2 2199.4
MAX -698/6 3352/7 533/7 2471.4/7 676.2/8 2231.0/6
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Retrofitting Scheme for Piping
NODE: 42 (DISCHARGE NOZZLE OF PUMP 12-P-119/219S)
3 (OPE) 146 281 167 66.7 495.2 -49.3
4 (SUS) -164 -113 -269 -232.6 -87.4 99.2
5 (OPE) 216 323 146 84.6 450.1 -78.3
6 (OPE) 121 248 164 62.8 502.6 -24.3
7 (OPE) 147 299 208 89.7 511.7 -61.2
8 (OPE) 176 285 109 53.1 450.1 -45.0
MAX 216/5 323/5 -269/4 -232.6/4 511.7/7 99.2/4
NODE: 2000 (DISCHARGE NOZZLE OF PUMP 12-P-119/219A)
3 (OPE) 198 195 543 272.0 426.8 -172.8
4 (SUS) -72 -200 -41 -27.3 24.3 68.3
5 (OPE) 237 199 520 272.7 400.0 -183.1
6 (OPE) 147 108 462 218.2 402.7 -104.4
7 (OPE) 196 218 586 294.6 446.5 -185.8
8 (OPE) 192 134 443 226.4 375.1 -123.0
MAX 237/5 218/7 586/7 294.6/7 446.5/7 -185.8/7
NODE: 1 (F NOZZLE OF COLUMN 12-C-108)
3 (OPE) -260 3424 -139 2890.6 432.5 1391.7
4 (SUS) -170 2251 -108 1965.3 201.8 996.1
5 (OPE) 198 3270 -152 2769.1 165.6 1788.7
6 (OPE) -719 3605 -128 3034.0 710.2 1007.6
7 (OPE) -275 3318 249 2430.5 165.1 1312.4
8 (OPE) -247 3559 -529 3375.2 704.6 1483.0
MAX -719/6 3605/6 -529/8 3375.2/8 710.2/6 1788.7/5
NODE: 2 (N6 NOZZLE OF 12-E-116A)
3 (OPE) 27 76 24 81.9 -29.6 -4.3
4 (SUS) -3 -47 0 0.1 3.1 0.7
5 (OPE) 64 78 28 84.7 -52.1 -15.4
6 (OPE) -14 75 21 79.6 -3.8 6.1
7 (OPE) 29 74 46 89.7 -34.1 -6.5
8 (OPE) 24 78 3 74.2 -25.2 -2.1
MAX 64/5 78/8 46/7 89.7/7 -52.1/5 -15.4/5
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Retrofitting Scheme for Piping
SEISMIC CASES (DYNAMIC)
Load Case 1. Design + Seismic
NODE FX FY FZ MX MY MZ
42 303 593 412 253 665 1912000 356 435 884 480 641 345
1 685 3953 514 3508 830 17162 42 81 43 88 43 9
5530 183 93 205 97 230 1488560 124 145 446 90 164 35
3 409 226 26 22 40 5234 865 4006 672 2726 916 2710
13120 635 740 829 639 542 67312120 553 706 889 583 182 714
Load Case 2. Design +X Wind + Seismic
42 373 635 391 271 620 2202000 396 439 861 481 614 355
1 622 3798 526 3387 563 21132 79 82 46 91 66 20
5530 211 99 233 107 256 1658560 237 192 469 95 137 17
3 480 227 35 33 44 5274 798 4008 683 2734 877 2664
13120 655 749 836 644 548 68712120 571 699 883 576 189 725
Load Case 3. Design -X Wind + Seismic
42 278 560 409 249 672 1662000 306 348 803 426 617 277
1 1144 4134 502 3651 1108 13322 29 79 39 86 17 11
5530 155 94 211 91 227 1288560 202 79 423 86 178 54
3 354 234 32 22 37 5294 932 4005 662 2718 955 2755
13120 615 730 823 634 536 659
12120 536 712 894 589 191 703
Load Case 4. Design +Z Wind + Seismic
42 304 610 453 276 681 2031 699 3847 623 3048 563 16372 44 79 64 96 48 12
5530 190 90 213 111 256 1778560 131 154 313 65 104 46
3 404 223 193 40 235 5194 867 4009 752 2797 768 2698
13120 665 781 887 673 535 70812120 691 900 1073 713 206 853
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Retrofitting Scheme for Piping
Load Case 5. Design -Z Wind + Seismic
42 333 597 354 240 620 187
1 671 4088 903 3993 1102 18072 39 83 21 80 39 75530 174 98 209 84 211 1178560 173 144 579 114 219 26
3 413 228 195 31 242 5254 864 4004 596 2657 1063 2724
13120 605 697 770 604 550 63812120 466 545 702 480 229 587
4.3 CONCLUSION
The piping stress analysis has been carried out for 2CT Transfer pumps discharge to 3CT (12-
C-111/211) feed inlet & 2HT (12-C-110/210) feed inlet after proposed retrofitting modifications.
The results indicate that the stresses for the individual wind and seismic load cases are
marginally exceeding the allowables. Hence the system may be deemed to quality the design
adequacy re-evaluation after retrofitting.
It is to be noted that the stresses in the system are marginally exceeding the allowables only at
the tee connection (Caesar Node No. 255), where the thickness of branch connection is 3.08
mm. If this tee connection is replaced with one having the thickness of the branch 4.0 mm or
more, the stresses reduce to less than allowables.
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Retrofitting Scheme for Piping
5.0 Piping loop having Document number A375-000-16-43-ADC-0046
5.1 PROPOSED RETROFITTING
Table 5.1 Suggested modifications in supports
NodeNo.
Previous support New SupportRemarks
7530 S4-A-5-10 S4-A-4-10 in X, 32 mm gap in Z & withoutY guide
5.2 RESULTS AFTER RETROFITTING
Table 5.2 Maximum stresses for design and wind (static) load cases
LoadCaseNo.
CAESAR Load Case DescriptionStresses (psi) % of
AllowableStatus
Actual Allow.
4 W+P1+F1 (SUS) SUSTAINED 11271.9 23172.5 48.6 OK
13 DS3-DS4 (EXP) THERMAL 37530.9 42457.1 88.4 OK18 ST4+ST14 (OCC) +X WIND+SEISMIC 22956.4 25788.6 89.0 OK
19 ST4+ST15 (OCC) -X WIND+SEISMIC 23969.3 25788.6 92.9 OK
20 ST4+ST16 (OCC) +Z WIND+SEISMIC 13279.8 25788.6 51.5 OK
21 ST4+ST17 (OCC) -Z WIND+SEISMIC 12139.2 25788.6 47.1 OK
Table 5.3 Maximum stresses for seismic (dynamic) load cases
LoadCaseNo.
Load Case DescriptionStresses (psi) % OF
AllowableStatus
Actual Allow.
6 W+P1+F1+SEISMIC (OCC) 23771.9 25789 92.2 OK
7 W+P1+F1+WIN1+SEISMIC (OCC) 23588.3 25789 91.5 OK
8 W+P1+F1+WIN2+SEISMIC (OCC) 22713.1 25789 88.1 OK
9 W+P1+F1+WIN3+SEISMIC (OCC) 23506.0 25789 91.1 OK
10 W+P1+F1+WIN4+SEISMIC (OCC) 22615.5 25789 87.7 OK
The nozzle loadings of connecting equipments obtained by the piping analysis are given below.
The forces are in kgf and the moments are in kgf-m.
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Retrofitting Scheme for Piping
DESIGN AND WIND (STATIC)
NODE: 1 (F1 NOZZLE OF COLUMN 12-V-103)
CASE TYPE FX FY FZ MX MY MZ
3 (OPE) 376 213 -1 5.2 -4.0 -527.6
4 (SUS) -13 -86 0 0.9 2.4 15.1
5 (OPE) 447 213 -11 17.3 -8.3 -533.7
6 (OPE) 317 221 8 -6.3 0.4 -530.2
7 (OPE) 371 210 159 36.1 184.4 -523.5
8 (OPE) 381 216 -162 -25.6 -192.4 -531.4
MAX 447/5 221/6 -162/8 36.1/7 -192.4/8 -533.7/5
NODE: 13120 (DISCHARGE NOZZLE OF PUMP 12-P-118/218A)
3 (OPE) 465 420 552 406.4 -153.7 -528.9
4 (SUS) -4 -262 -70 -52.2 -36.0 11.4
5 (OPE) 506 441 577 420.7 -185.5 -562.5
6 (OPE) 440 418 543 407.5 -122.8 -506.7
7 (OPE) 502 454 608 441.3 -175.8 -563.3
8 (OPE) 455 396 510 381.3 -158.2 -514.2
MAX 506/5 454/7 608/7 441.3/7 -185.5/5 -563.3/7
NODE: 12120 (DISCHARGE NOZZLE OF PUMP 12-P-118/218S)
3 (OPE) 443 399 528 413.6 17.4 -484.6
4 (SUS) -6 -262 -61 -44.5 -24.8 14.4
5 (OPE) 495 431 552 436.8 -22.4 -519.6
6 (OPE) 407 392 523 404.2 58.0 -467.1
7 (OPE) 537 518 616 488.2 -23.5 -564.5
8 (OPE) 442 395 503 398.4 17.0 -484.1
MAX 537/7 518/7 616/7 488.2/7 58.0/6 -564.5/7
NODE: 8560 (DISCHARGE NOZZLE OF PUMP 12-P-127/227)
3 (OPE) 23 -65 -312 -86.1 -73.0 -11.7
4 (SUS) -49 -35 -25 -7.2 3.4 12.9
5 (OPE) 146 -119 -341 -93.8 -40.1 -38.6
6 (OPE) -118 18 -285 -79.3 -99.4 17.9
7 (OPE) -13 -66 -205 -59.6 -18.6 -2.8
8 (OPE) 61 -65 -421 -113.3 -127.3 -21.2
MAX 146/5 -119/5 -421/8 -113.3/8 -127.3/8 -38.6/5
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Retrofitting Scheme for Piping
NODE: 5530 (DISCHARGE NOZZLE OF PUMP 12-P-128/228)
3 (OPE) 102 -45 117 78.8 142.1 -142.4
4 (SUS) 6 -33 1 1.1 0.4 -0.85 (OPE) 141 -54 152 95.9 173.7 -169.3
6 (OPE) 62 -36 112 63.4 126.3 -103.0
7 (OPE) 95 -27 155 96.7 167.0 -160.3
8 (OPE) 109 -65 83 61.2 118.9 -122.7
MAX 141/5 -65/8 155/7 96.7/7 173.7/5 -169.3/5
NODE: 2 (N6 NOZZLE OF 12-E-112A)
3 (OPE) -320 199 33 98.1 172.3 -168.0
4 (SUS) -20 -226 11 7.9 6.0 33.25 (OPE) -224 215 45 121.6 143.3 -194.6
6 (OPE) -407 182 21 78.6 195.3 -143.1
7 (OPE) -320 172 133 176.9 186.7 -180.2
8 (OPE) -306 221 -57 37.5 141.8 -160.6
MAX -407/6 -226/4 133/7 176.9/7 195.3/6 -194.6/5
SEISMIC CASES (DYNAMIC)
Load Case 1. Design + Seismic
NODE FX FY FZ MX MY MZ
5530 165 84 187 104 202 1828560 136 111 439 118 147 40
1 424 240 32 22 56 56213120 622 692 872 577 498 71612120 614 566 790 525 443 614
2 458 274 144 245 257 261
Load Case 2. Design +X Wind + Seismic
5530 204 93 223 122 234 2098560 259 164 468 125 114 67
1 495 240 42 35 60 56913120 663 713 897 591 530 74912120 666 598 814 548 448 649
2 363 291 156 269 228 288
Load Case 3. Design -X Wind + Seismic
5530 124 75 182 89 186 1428560 231 63 413 111 174 46
1 365 247 39 24 52 56513120 596 691 863 578 467 694
12120 579 559 785 516 484 5962 546 257 132 226 280 237
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Retrofitting Scheme for Piping
Load Case 4. Design +Z Wind + Seismic
5530 157 66 225 122 227 2008560 126 112 332 91 93 31
1 419 237 190 53 236 558
13120 659 726 928 612 520 75012120 708 685 878 600 449 694
2 459 248 245 324 271 274
Load Case 5. Design -Z Wind + Seismic
5530 172 103 153 87 179 1628560 175 110 548 145 201 49
1 429 243 193 43 244 56613120 612 669 830 552 503 70112120 613 563 765 510 443 613
2 445 297 168 185 226 254
5.3 CONCLUSION
The piping stress analysis has been carried out for XU-I product transfer to XU-II after proposed
retrofitting modifications.
The results indicate that the stresses for the individual wind and seismic load cases are
marginally exceeding the allowable stresses. Hence the system may be deemed to qualify the
design adequacy re-evaluation after retrofitting.
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Retrofitting Scheme for Piping
6.0 Piping loop having Document number A375-000-16-43-ADC-0049
6.1 PROPOSED RETROFITTING
Table 6.1 Suggested modifications in supports
NodeNo.
Previous support New SupportRemarks
1510 S4-A-2-10 S4-A-4-10 in Z, 0 mm gap in X & withoutY guide
500 L1A-2- L8A-2- -S With 9 mm gap
430 S4-A-2-10 S4-A-4-10without Z guide, With 8 mm gap in X & 7
mm gap in -Y
390 L6-2-1950 L8-2-1950-TWith 14.5 mm gap in Z, 8 mm gap in X &
withoutY guide
1210 S1-A-2 S1-A-1
1270 S1-A-1 S1-A-4With 48 mm gap in Z, 0 mm gap in X &
withoutY guide
6.2 RESULTS AFTER RETROFITTING
Table 6.2 Maximum stresses for design and wind (static) load cases
LoadCaseNo.
CAESAR Load Case DescriptionStresses (psi) % of
AllowableStatus
Actual Allow.
4 W+P1+F1 (SUS) SUSTAINED 15541.7 25650.0 60.6 OK
13 DS3-DS4 (EXP) THERMAL 36734.5 33481.9 109.7 Marginal
18 ST4+ST14 (OCC) +X WIND+SEISMIC 17225.2 30780.0 56.0 OK
19 ST4+ST15 (OCC) -X WIND+SEISMIC 16093.4 30780.0 52.3 OK
20 ST4+ST16 (OCC) +Z WIND+SEISMIC 16534.1 30780.0 53.7 OK
21 ST4+ST17 (OCC) -Z WIND+SEISMIC 16417.3 30780.0 66.3 OK
Table 6.3 Maximum stresses for seismic (dynamic) load cases
LoadCaseNo.
Load Case DescriptionStresses (psi)
% OFAllowable
StatusActual Allow.
6 W+P1+F1+SEISMIC (OCC) 25806.9 24749 104.3 Marginal
7 W+P1+F1+WIN1+SEISMIC (OCC) 26300.0 24749 106.3 Marginal
8 W+P1+F1+WIN2+SEISMIC (OCC) 23724.6 24749 95.9 OK
9 W+P1+F1+WIN3+SEISMIC (OCC) 24407.4 24749 98.6 OK
10 W+P1+F1+WIN4+SEISMIC (OCC) 25766.5 24749 104.1 Marginal
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Retrofitting Scheme for Piping
The nozzle loadings of connecting equipments obtained by the piping analysis are given below.
The forces are in kgf and the moments are in kgf-m.
DESIGN AND WIND (STATIC)
NODE: 1 (1ST STAGE HOT TOWER 12-C-107 F1 NOZZLE)
CASE TYPE FX FY FZ MX MY MZ
3 (OPE) -201 3191 -124 3853.0 334.4 951.94 (SUS) -28 -61 -25 28.1 69.7 134.05 (OPE) 415 3065 -130 3716.1 -291.8 1898.66 (OPE) -820 3363 -119 4045.6 972.2 17.37 (OPE) -203 3016 391 2730.8 78.7 886.48 (OPE) -201 3396 -640 5011.1 595.7 1025.2
MAX -820/6 3396/8 -640/8 5011.1/8 972.2/6 1898.6/5
NODE: 1480 (12-V-104/204 F1 NOZZLE)
3 (OPE) -259 1 -4 -1.7 -2.8 31.14 (SUS) -414 -140 -2 0.2 7.7 203.85 (OPE) -185 19 -8 -7.9 -15.6 -4.96 (OPE) -294 9 -4 -2.5 -3.5 39.97 (OPE) -238 6 42 37.4 64.6 21.28 (OPE) -233 5 -57 -49.6 -89.1 18.7MAX -414/4 -140/4 -57/8 -49.6/8 -89.1/8 203.8/4
NODE: 890 (PUMP 117A DISCHARGE NOZZLE)
3 (OPE) 344 -170 -380 -110.3 171.9 -211.64 (SUS) 11 -186 -22 -9.4 -4.8 0.75 (OPE) 365 -188 -368 -92.1 186.1 -229.76 (OPE) 317 -161 -378 -116.6 162.7 -187.17 (OPE) 333 -247 -205 5.1 257.8 -159.98 (OPE) 350 -83 -602 -246.5 57.9 -278.3MAX 365/5 -247/7 -602/8 -246.5/8 257.8/7 -278.3/8
NODE: 100 (PUMP 117S DISCHARGE NOZZLE)
3 (OPE) 97 211 -632 -465.4 -306.3 40.94 (SUS) 2 -192 -6 2.4 -1.1 9.35 (OPE) 115 180 -571 -421.8 -270.2 40.86 (OPE) 77 234 -672 -496.5 -333.5 47.8
7 (OPE) 105 179 -549 -412.3 -262.2 53.98 (OPE) 76 219 -665 -483.4 -332.0 47.6MAX 115/5 234/6 -672/6 -496.5/6 -333.5/6 53.9/7
SEISMIC CASES (DYNAMIC)
Load Case 1. Design + Seismic
NODE FX FY FZ MX MY MZ
100 171 268 763 548 369 107890 445 260 613 244 311 302
1 709 4162 617 5690 1003 18381480 353 56 40 37 46 88
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Retrofitting Scheme for Piping
Load Case 2. Design +X Wind + Seismic
100 189 237 703 505 333 106890 466 278 601 226 325 320
1 922 4037 623 5553 960 27841480 280 74 44 43 59 62
Load Case 3. Design -X Wind + Seismic
100 151 291 804 579 397 113890 418 251 610 251 302 278
1 1327 4335 612 5882 1640 9031480 389 64 40 38 46 97
Load Case 4. Design +Z Wind + Seismic
100 178 236 681 495 325 120890 434 337 437 139 397 250
1 710 3988 885 4568 747 17721480 333 61 78 73 108 78
Load Case 5. Design -Z Wind + Seismic
100 150 276 796 566 395 113890 451 173 834 381 197 369
1 709 4367 1133 6848 1264 19111480 328 60 93 85 132 76
6.3 CONCLUSION
The piping stress analysis has been carried out for piping from 2nd Stage Hot Tower Discharge
Pump 12-P-117/217 to Dump Tank (12-V-104/204) & 1st Stage Hot Tower (12-C-107/207) after
proposed retrofitting modifications.
The results indicate that the stresses for the individual wind and seismic load cases marginally
exceed the allowable stresses. Hence the system may be deemed to qualify the design
adequacy re-evaluation after retrofitting.
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Retrofitting Scheme for Piping
7.0 Piping loop having Document number A375-000-16-43-ADC-0051
7.1 PROPOSED RETROFITTING
Table 7.1 Suggested modifications in supports
NodeNo.
Previous support New SupportRemarks
4070 S3-A-2-4 S3-A-4-4in +Z, 20 mm gap inZ, withoutY guide &
with 12 mm gap in X
5110 --- S1-A--4 in X & withoutY guide
7.2 RESULTS AFTER RETROFITTING
Table 7.2 Maximum stresses for design and wind (static) load cases according to ASME ND
LoadCaseNo.
CAESAR Load Case Description
Stresses (psi)% of
AllowableStatus
Actual Allow.
4 W+P1+F1 (SUS) SUSTAINED 24624 22322 110.3
Not
Qualified13 DS3-DS4 (EXP) THERMAL 19348.3 28309.8 68.3 OK
18 ST4+ST14 (OCC) +X WIND+SEISMIC 27637.8 24749.1 111.7Not
Qualified
19 ST4+ST15 (OCC) -X WIND+SEISMIC 27520.6 24749.1 111.2Not
Qualified
20 ST4+ST16 (OCC) +Z WIND+SEISMIC 34310.2 24749.1 138.6Not
Qualified
21 ST4+ST17 (OCC) -Z WIND+SEISMIC 32619.5 24749.1 131.8Not
Qualified
Table 7.3 Maximum stresses for design and wind (static) load cases according to ASME B 31.3
LoadCaseNo.
CAESAR Load Case Description
Stresses (psi)% of
AllowableStatus
Actual Allow.
4 W+P1+F1 (SUS) SUSTAINED 14629.0 14499.4 100.9 marginal
13 DS3-DS4 (EXP) THERMAL 16739.0 26736.7 62.6 OK
18 ST4+ST14 (OCC) +X WIND+SEISMIC 26791.7 26190.9 102.3 marginal
19 ST4+ST15 (OCC) -X WIND+SEISMIC 22811.2 26190.9 87.1 OK
20 ST4+ST16 (OCC) +Z WIND+SEISMIC 18410.6 19284.2 95.5 OK
21 ST4+ST17 (OCC) -Z WIND+SEISMIC 18089.3 19284.2 93.8 OK
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Retrofitting Scheme for Piping
Table 7.4 Maximum stresses for design and wind (static) load cases according to ASME ND
LoadCaseNo.
Load Case DescriptionStresses (psi)
% OF
AllowableStatus
Actual Allow.
6 W+P1+F1+SEISMIC (OCC) 46777.8 24749 189.0Not
Qualified
7 W+P1+F1+WIN1+SEISMIC (OCC) 50579.7 24749 204.4Not
Qualified
8 W+P1+F1+WIN2+SEISMIC (OCC) 45956.5 24749 185.7Not
Qualified
9 W+P1+F1+WIN3+SEISMIC (OCC) 42277.1 24749 170.8Not
Qualified
10 W+P1+F1+WIN4+SEISMIC (OCC) 41601.3 24749 168.1Not
Qualified
Table 7.5 Maximum stresses for design and wind (static) load cases according to ASME B 31.3
LoadCaseNo.
Load Case DescriptionStresses (psi)
% OFAllowable
StatusActual Allow.
6 W+P1+F1+SEISMIC (OCC) 22808.6 19284 118.3 Marginal
7 W+P1+F1+WIN1+SEISMIC (OCC) 34394.3 19284 178.4Not
Qualified
8 W+P1+F1+WIN2+SEISMIC (OCC) 32478.5 19284 168.4Not
Qualified
9 W+P1+F1+WIN3+SEISMIC (OCC) 32522.5 26191 124.2Not
Qualified
10 W+P1+F1+WIN4+SEISMIC (OCC) 34508.3 26191 131.8Not
Qualified
The nozzle loadings of connecting equipments obtained by the piping analysis are given below.
The forces are in kgf and the moments are in kgf-m.
DESIGN AND WIND (STATIC)
NODE: 1 (F NOZZLE OF COLUMN 12-C-108)
CASE TYPE FX FY FZ MX MY MZ
3 (OPE) -268 3495 -148 2972.0 313.7 1407.3
4 (SUS) -173 2270 -108 1980.6 197.4 999.4
5 (OPE) 177 3539 -169 3018.5 58.8 1878.4
6 (OPE) -727 3674 -136 3113.7 586.3 1020.8
7 (OPE) -293 3545 232 2649.6 27.6 1384.2
8 (OPE) -265 3799 -542 3592.8 632.2 1565.0
MAX -727/6 3799/8 -542/8 3592.8/8 632.2/8 1878.4/5
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Retrofitting Scheme for Piping
NODE: 1000 (DISCHARGE NOZZLE OF PUMP 12-P-119/219S)
3 (OPE) 57 87 88 -44.7 570.2 72.1
4 (SUS) -189 -142 -223 -221.2 -92.1 118.15 (OPE) 105 112 79 -35.4 544.3 44.3
6 (OPE) -18 42 99 -66.5 610.7 113.1
7 (OPE) 52 90 121 -23.7 586.0 71.5
8 (OPE) 87 104 49 -55.3 535.7 61.2
MAX -189/4 -142/4 -223/4 -221.2/4 610.7/6 118.1/4
NODE: 2000 (DISCHARGE NOZZLE OF PUMP 12-P-119/219A
3 (OPE) 150 222 582 272.3 547.1 -179.2
4 (SUS) -32 -184 -44 -49.0 -25.7 22.0
5 (OPE) 195 235 570 280.7 522.2 -198.5
6 (OPE) 82 194 595 253.3 583.3 -150.4
7 (OPE) 119 237 655 295.5 599.1 -190.4
8 (OPE) 172 190 492 242.0 485.1 -150.1
MAX 195/5 237/7 655/7 295.5/7 599.1/7 -198.5/5
NODE: 8560 (DISCHARGE NOZZLE OF PUMP 12-P-127/227)
3 (OPE) 7 -40 -352 -95.9 -107.4 -9.4
4 (SUS) -46 -40 -41 -10.7 -5.1 12.4
5 (OPE) 114 -102 -328 -91.2 -35.4 -31.9
6 (OPE) -76 7 -341 -93.0 -137.5 8.1
7 (OPE) -30 -42 -260 -73.3 -59.7 -0.1
8 (OPE) 34 -45 -451 -120.5 -150.3 -15.7
MAX 114/5 -102/5 -451/8 -120.5/8 -150.3/8 -31.9/5
NODE: 5530 (DISCHARGE NOZZLE OF PUMP 12-P-128/228)
3 (OPE) 124 -201 135 24.9 138.9 -28.04 (SUS) 9 -34 -3 -3.2 -1.0 -1.5
5 (OPE) 128 -198 177 35.2 156.9 -31.6
6 (OPE) 110 -199 113 19.6 131.2 -24.7
7 (OPE) 110 -211 165 32.5 158.4 -26.8
8 (OPE) 136 -179 116 20.3 123.6 -32.7
MAX 136/8 -211/7 177/5 35.2/5 158.4/7 -32.7/8
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Retrofitting Scheme for Piping
NODE: 2 (F1 NOZZLE OF 12-V-104)
3 (OPE) 363 203 1 0.1 -4.7 -506.3
4 (SUS) -13 -82 -0 0.1 0.9 16.0
5 (OPE) 428 198 -13 21.4 -8.6 -503.76 (OPE) 298 207 9 -10.7 -0.4 -505.1
7 (OPE) 358 200 162 27.0 187.9 -501.7
8 (OPE) 366 204 -160 -26.4 -197.1 -506.8
MAX 428/5 207/6 162/7 27.0/7 -197.1/8 -506.8/8
SEISMIC CASES (DYNAMIC)
Load Case 1. Design + Seismic
NODE FX FY FZ MX MY MZ
5530 213 244 230 48 214 518560 112 81 469 125 178 36
2 407 229 28 14 51 5401000 559 487 310 416 799 3232000 348 470 1047 502 883 348
1 695 4048 527 3595 733 1727
Load Case 2. Design +X Wind + Seismic
5530 217 240 271 58 232 548560 219 143 446 120 106 58
2 472 224 40 35 55 5381000 607 512 301 407 773 2962000 394 483 1035 511 858 368
1 604 4093 548 3641 478 2198
Load Case 3. Design -X Wind + Seismic
8560 180 49 459 122 208 345530 199 242 208 43 206 47
2 341 233 36 25 47 5391000 520 443 322 438 840 3642000 281 442 1060 483 919 320
1 1154 4227 516 3737 1006 1341
Load Case 4. Design +Z Wind + Seismic
5530 200 253 260 56 234 498560 134 84 378 103 130 26
2 402 226 189 41 234 5361000 554 491 343 395 815 3232000 318 485 1120 526 935 360
1 721 4099 612 3273 447 1704
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Retrofitting Scheme for Piping
Load Case 5. Design -Z Wind + Seismic
5530 226 222 211 44 199 558560 138 87 568 150 221 42
2 410 230 187 40 244 5411000 589 504 271 427 765 3132000 371 438 957 472 821 319
1 693 4352 922 4216 1052 1885
7.3 CONCLUSION
The piping stress analysis has been carried out for 2nd Stage Liquid re-dump line to 2HT (12-C-
108) after proposed retrofitting modifications.
The results indicate that the stresses for the individual wind and seismic load cases are
marginally exceeding the allowables. Hence the system may be deemed to quality the design
adequacy re-evaluation after retrofitting.
It is to be noted that the stresses in the system are marginally exceeding the allowables only at
the tee connection (Caesar Node No. 255), where the thickness of branch connection is 3.08
mm. If this tee connection is replaced with one having the thickness of the branch 4.0 mm or
more, the stresses reduce to less than allowables.
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Retrofitting Scheme for Piping
8.0 Piping loop having Document number A375-000-16-43-ADC-0054
8.1 PROPOSED RETROFITTING
Table 8.1 Suggested modifications in supports
NodeNo.
Previoussupport
New Support Remarks
200 L8A-2-715-N L8A-2-715-N & L8A-2-715-S Guide in Z , Cross Guide X
250 G2-3, B39-A-938-4 & B43-7-1714/1200-105
G2-3, B39-A-938-4 & B43-7-1714/1200-105
Guide in +X with 7.0 mm gap, Guide -X & CrossGuide Z with 3.0 mm gap
418 ON RACK S3-A-2-4 Guide in X
420 ON RACK S3-A-2-4 Guide in X
422 ON RACK S3-A-2-4 Guide in X
424 ON RACK S3-A-1-4
460 S3-A-5-4 S3-A-5-4 & S3-A-2-4 Guide in Z , Cross Guide X
490 L5-2-1950 L8A-2-1950-S Guide in Z ,
535 L6-1-1800 L7A-1-1800-S Guide in Z with 8.0 mm gap, Guide in -X , Guide+X with 17.0 mm gap
600 L6-1-1800 L7A-1-1800-S Guide in +Z , Guide -Z with 4.5 mm gap, Guide in-X with 20.0 mm gap, Guide +X
3040 B39-A-325-4 &H6-1558-3
B39-A-325-4 & S3-A-2-4 Guide in Z with 5.0 mm gap
3110 L1A-2-375 L8A-2-1950-S Guide in +Z with 5.0 mm gap, Guide -Z
3180 S3-A-5-4 S3-A-5-4 & S3-A-2-4 Guide in +Z , Guide -Z with 22.0 mm gap &Cross Guide X
3220 ON RACK S3-A-2-4 Guide X
3230 ON RACK S3-A-5-4 Cross Guide Z with 3.0 mm gap
3240 ON RACK S3-A-2-4 Guide X
3250 ON RACK S3-A-1-4
3475 SH-55, 2 nos SH-55, 1 no.
8.2 RESULTS AFTER RETROFITTING
Table 8.2 Maximum stresses for design and wind (static) load cases
LoadCaseNo.
CAESAR Load Case Description
Stresses (psi)% of
AllowableStatus
Actual Allow.
4 W+P1+F1 (SUS) SUSTAINED 17,127 22,808 75.0 OK
17 DS3-DS4 (EXP) THERMAL 27,788 30,823 90.0 OK
18 ST4+ST13 (OCC) +X WIND+ SUS 24,464 24,749 99.0 OK
19 ST4+ST14 (OCC) -X WIND+ SUS 24,463 24,749 99.0 OK
20 ST4+ST15 (OCC) +Z WIND+ SUS 22,504 24,749 91.0 OK
21 ST4+ST16 (OCC) -Z WIND+ SUS 23,669 24,749 96.0 OK
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Retrofitting Scheme for Piping
Table 8.3 Maximum stresses for seismic (dynamic) load cases
LoadCaseNo.
Load Case DescriptionStresses (psi)
% OF
AllowableStatus
Actual Allow.
6 W+P1+F1+SEISMIC (OCC) 21,134 25,343 83.0 OK
7 W+P1+F1+WIN1+SEISMIC (OCC) 32,508 24,749 131.0NOT
QUALIFIED
8 W+P1+F1+WIN2+SEISMIC (OCC) 32,593 24,749 132.0NOT
QUALIFIED
9 W+P1+F1+WIN3+SEISMIC (OCC) 26,700 24,749 108.0NOT
QUALIFIED
10 W+P1+F1+WIN4+SEISMIC (OCC) 28,062 24,749 113.0NOT
QUALIFIED
The actual loading obtained on the nozzles of connecting equipments by the piping analysis isgiven below. The forces are in kgf and the moments are in kgf-m.
DESIGN AND WIND (STATIC)
NODE: 2 (3RDSTAGE COLD TOWER NOZZLE R)
NODE Load case FX Kg FY Kg FZ Kg MX Kg.m. MY Kg.m. MZ Kg.m.
2 3 (OPE) -3 146 3 150.6 -30.8 -12.5
4 (SUS) -0 -33 1 17.3 -1.5 -0.4
5 (OPE) 153 151 3 154.1 -157.8 72.3
6 (OPE) -159 145 3 150.0 98.8 -96.5
7 (OPE) -3 144 132 84.7 -20.4 -9.3
8 (OPE) -2 162 -126 228.2 -22.7 -8.9
MAX -159/6 162/8 132/7 228.2/8 -157.8/5 -96.5/6
NODE: 11 (PUMP 12-P-124/224A DISCHARGE)
11 3 (OPE) 67 1 36 -0.9 -5.0 -29.1
4 (SUS) 0 -13 -5 -2.6 -1.4 -0.8
5 (OPE) 90 -11 103 11.4 -26.1 -38.1
6 (OPE) -24 -41 9 -6.5 15.4 10.3
7 (OPE) 60 -3 88 13.5 6.7 -27.2
8 (OPE) 45 -18 -26 -17.7 -17.5 -17.4
MAX 90/5 -41/6 103/5 -17.7/8 -26.1/5 -38.1/5
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Retrofitting Scheme for Piping
NODE: 801 (PUMP 12-P-124/224S DISCHARGE)
801 3 (OPE) 61 21 27 -2.0 -0.1 -27.3
4 (SUS) 0 -13 -5 -2.6 -1.4 -0.9
5 (OPE) 83 -4 70 6.4 -24.4 -34.2
6 (OPE) -18 -3 21 -3.7 23.1 5.1
7 (OPE) 47 15 99 16.3 16.3 -22.7
8 (OPE) 46 4 -25 -16.9 -10.2 -19.0
MAX 83/5 21/3 99/7 -16.9/8 -24.4/5 -34.2/5
NODE: 11600 (EXCHANGER 12-E-123/223_N1)
11600 3 (OPE) -26 -135 47 71.8 -6.2 46.74 (SUS) 0 44 2 -1.2 1.1 -1.6
5 (OPE) -95 -145 48 71.6 -39.7 15.0
6 (OPE) 49 -123 45 71.9 31.8 81.3
7 (OPE) -30 -135 23 80.4 -4.7 44.1
8 (OPE) -29 -169 100 57.3 10.5 47.5
MAX -95/5 -169/8 100/8 80.4/7 -39.7/5 81.3/6
NODE: 11700 (EXCHANGER 12-E-123/223_N2)
11700 3 (OPE) -80 -93 32 134.1 -82.2 49.0
4 (SUS) -0 50 1 -0.4 -0.7 -3.5
5 (OPE) -141 -95 27 133.4 -119.2 80.4
6 (OPE) -15 -92 38 135.0 -40.6 16.9
7 (OPE) -85 -94 -21 113.1 -93.8 51.0
8 (OPE) -75 -103 95 161.6 -58.5 48.7
MAX -141/5 -103/8 95/8 161.6/8 -119.2/5 80.4/5
SEISMIC CASES (DYNAMIC)
Load Case 6. Design + Seismic
NODE FX FY FZ MX MY MZ
2 110 344 71 296 105 39
11 94 27 68 7 19 42
801 87 40 64 9 19 39
11600 35 148 58 77 12 54
11700 108 99 49 143 113 61
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Retrofitting Scheme for Piping
Load Case 7. Design +X Wind + Seismic
2 260 348 71 299 232 99
11 116 36 136 17 41 51
801 109 23 107 13 43 4611600 103 157 59 77 46 23
11700 169 101 45 142 150 93
Load Case 8. Design -X Wind + Seismic
2 266 343 71 295 173 123
11 50 67 41 12 30 23
801 43 22 58 11 42 17
11600 58 135 56 77 38 89
11700 43 98 56 144 71 29
Load Case 9. Design +Z Wind + Seismic
2 266 343 71 295 173 123
11 50 67 41 12 30 23
801 43 22 58 11 42 17
11600 58 135 56 77 38 89
11700 43 98 56 144 71 29
Load Case 10. Design -Z Wind + Seismic
2 109 360 194 373 97 36
11 72 44 58 24 32 30
801 72 23 61 24 29 31
11600 37 182 111 63 17 55
11700 103 108 113 170 89 61
8.3 CONCLUSION
The piping stress analysis has been carried out for the piping from Pumps (12-P-124/224A/S)discharge to nozzle N2 of Exchanger(12-E-123/223) and nozzle N1 of Exchanger (12-E-
123/223) to nozzle R of 3rd Stage Cold Tower (12-C-111/211) after proposed retrofitting
modifications.
The results indicate that the stresses for the individual wind and seismic load cases are within
the allowable stresses. Hence the system may be deemed to qualify the design adequacy re-
evaluation after retrofitting.
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Retrofitting Scheme for Piping
9.0 Piping loop having Document number A375-000-16-43-ADC-0056
9.1 PROPOSED RETROFITTING
Table 9.1 Suggested modifications in supports
NodeNo.
Previous support New Support Remarks
4050 S1-A-1 S1-A-2
4180 S1-A-1 S1-A-2
1040 S1-A-1 S1-A-2
4070 S1-A-1 S1-A-2
4220 S1-A-1 S1-A-2
350 S1-A-1 S1-A-5 With 6 mm gap
9.2 RESULTS AFTER RETROFITTING
Table 9.2 Maximum stresses for design and wind (static) load cases
LoadCaseNo.
CAESAR Load Case DescriptionStresses (psi) % of
AllowableStatu
sActual Allow.
4 W+P1+F1 (SUS) SUSTAINED 18432.8 23172.5 79.5 OK
13 DS3-DS4 (EXP) THERMAL 22519.1 24737.1 91.0 OK
18 ST4+ST14 (OCC) +X WIND+SEISMIC 23871.7 24749.1 96.5 OK
19 ST4+ST15 (OCC) -X WIND+SEISMIC 26934.7 30780.0 87.5 OK
20 ST4+ST16 (OCC) +Z WIND+SEISMIC 20897.5 25788.6 81.0 OK
21 ST4+ST17 (OCC) -Z WIND+SEISMIC 20408.9 25788.6 79.1 OK
Table 9.3 Maximum stresses for seismic (dynamic) load cases
LoadCaseNo.
Load Case DescriptionStresses (psi)
% OFAllowable
StatusActual Allow.
6 W+P1+F1+SEISMIC (OCC) 25917.0 25789 100 OK
7 W+P1+F1+WIN1+SEISMIC (OCC) 29170.3 24749 117.9Not
Qualified
8 W+P1+F1+WIN2+SEISMIC (OCC) 27934.3 24749 112.9Not
Qualified
9 W+P1+F1+WIN3+SEISMIC (OCC) 25645.9 25789 99.4 OK10 W+P1+F1+WIN4+SEISMIC (OCC) 26198.8 25789 101.6 Marginal
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Retrofitting Scheme for Piping
The nozzle loadings of connecting equipments obtained by the piping analysis are given below.
The forces are in kgf and the moments are in kgf-m.
DESIGN AND WIND (STATIC)NODE: 1220 (N6 NOZZLE OF EXCHANGER 12-E-117/217A)
CASE TYPE FX FY FZ MX MY MZ
3 (OPE) -107 652 164 574.6 3.9 126.1
4 (SUS) -13 -107 6 1.3 6.0 4.5
5 (OPE) -77 649 175 582.0 -18.0 108.9
6 (OPE) -132 662 156 573.6 21.1 134.9
7 (OPE) -102 661 225 606.0 -39.1 127.8
8 (OPE) -93 648 107 538.1 32.6 127.2MAX -132/6 662/6 225/7 606.0/7 -39.1/7 134.9/6
NODE: 3 (DISCHARGE NOZZLE OF PUMP 12-P-123/223A)
3 (OPE) 158 -225 289 70.9 -14.6 -73.7
4 (SUS) 2 -58 -5 -2.7 -0.9 0.0
5 (OPE) 171 -226 298 72.1 -14.8 -81.2
6 (OPE) 145 -216 302 73.1 -7.0 -70.0
7 (OPE) 166 -253 313 81.5 -8.3 -66.5
8 (OPE) 150 -198 264 59.9 -21.2 -81.0
MAX 171/5 -253/7 313/7 81.5/7 -21.2/8 -81.2/5
NODE: 4 (DISCHARGE NOZZLE OF PUMP 12-P-123/223S)
3 (OPE) 110 -282 35 33.8 -58.5 18.2
4 (SUS) 2 -57 -4 -2.2 -0.7 0.2
5 (OPE) 102 -285 47 36.3 -60.0 15.9
6 (OPE) 118 -262 32 30.3 -53.2 14.6
7 (OPE) 135 -278 96 47.6 -42.0 11.7
8 (OPE) 90 -269 -28 16.4 -75.1 18.1
MAX 135/7 -285/5 96/7 47.6/7 -75.1/8 18.2/3
NODE: 1 (F1 NOZZLE OF 12-V-105)
3 (OPE) -17 -211 -4 14.8 28.3 217.0
4 (SUS) -160 -325 -2 -31.1 16.6 456.7
5 (OPE) 85 -180 -8 18.4 15.6 143.2
6 (OPE) -106 -247 -1 9.6 40.9 316.9
7 (OPE) -7 -215 153 49.9 304.6 239.6
8 (OPE) -14 -212 -157 -46.0 -239.5 219.4
MAX -160/4 -325/4 -157/8 49.9/7 304.6/7 456.7/4
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Retrofitting Scheme for Piping
SEISMIC CASES (DYNAMIC)
Load Case 1. Design + Seismic
NODE FX FY FZ MX MY MZ
1 56 250 59 32 217 3143 236 288 370 91 43 994 157 319 137 56 87 32
1220 142 738 209 625 51 179
Load Case 2. Design +X Wind + Seismic
1 124 220 62 36 204 2403 250 288 379 92 43 1074 148 323 149 58 89 30
1220 113 734 220 632 65 162
Load Case 3. Design -X Wind + Seismic
1 146 287 56 27 229 4143 224 278 383 93 35 964 164 299 133 52 82 29
1220 167 748 201 624 68 188
Load Case 4. Design +Z Wind + Seismic
1 47 254 208 67 493 336
3 245 315 394 102 37 924 181 316 197 69 71 261220 137 746 270 656 86 181
Load Case 5. Design -Z Wind + Seismic
1 54 252 211 63 428 3163 228 260 346 80 50 1074 136 307 130 38 104 32
1220 128 734 152 588 79 180
9.3 CONCLUSION
The piping stress analysis has been carried out from pump 12-P-123/223 to 12-E-119/219
after proposed retrofitting modifications.
The results indicate that the stresses for the individual wind and seismic load cases are within
the allowable stresses. Hence the system may be deemed to qualify the design adequacy re-
evaluation after retrofitting.
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Retrofitting Scheme for Piping
10.0 Piping loop having Document number A375-000-16-43-ADC-0059
10.1 PROPOSED RETROFITTING
NODE PREVIOUS
SUPPORT
NEW SUPPORT REMARKS
260 S3-A-5-3 S3-A-5-3 & S3-A-2-3 Guide in +Z with 52.0 mm gap, Guide -Z
300 S3-A-1-3 S3-A-5-3 & S3-A-2-3 Guide in +X with 7.0 mm gap, Guide -X & Cross Guide Z with 3.0
mm gap
320 On rack S3-A-1-3
330 On rack S3-A-2-3 Guide in +X with 16.0 mm gap, Guide -X332 On rack S3-A-5-3 & S3-A-2-3 Guide in X , Cross Guide Z
334 On rack S3-A-2-3 Guide in -X with 34.0 mm gap, Guide +X
350 S3-A-1-3 S3-A-2-3 Guide in +Z with 11.0 mm gap, Guide -Z
360 S3-A-2-3 S3-A-2-3 & S3-A-5-3 Guide in X
485 SH-260 SH-260 & S3-C-2-3 Guide in Z with 1.5 mm gap,
1030 S3-A-1 S3-A-2 & S3-A-5 Guide in +Z with 8.0 mm gap, Guide -Z
Cross Guide in -X with 4.0 mm gap, Guide +X
1070 S3-A-1 S3-A-2 Guide in +Z , Guide -Z with 2.5 mm gap
1085 - S3-A-2 Guide in -X with 11.5 mm gap, Guide +X , +Y with 10.0 mm gap
1200 - L7A-2-H-S Guide in X , Guide in Z
1245 SH-49 &
SH-50
- Springs to be removed
1315 S3-A-1 &
B3-468-4
S3-A-1 & B2-468-4 Guide in X , Guide in Z
10.2 SPRING DETAILS:SPRING NO. OF
SPRINGS
USED
HOT LOAD COLD LOAD VERTICAL
MOVMENT
SPRING RATE
GIVEN GIVEN GIVEN GIVEN
SH-48 1 176 180 +1.0 40
SH-49 1 880 896 +1.0 160(to be removed)
SH-50 1 880 896 +1.0 160(to be removed)
SH-52 1 194 175 -11.0 17.273
SH-260* 1 256 275 +4.0 47.5
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Retrofitting Scheme for Piping
Table 10.1 Maximum stresses for design and wind (static) load cases according to ASME ND
LoadCase
No.
CAESAR Load Case DescriptionStresses (psi) % of
Allowable
Status
Actual Allow.4 W+P1+F1 (SUS) SUSTAINED 18,346 22,322 82.0 OK
17 DS3-DS4 (EXP) THERMAL 22,095 28,472 78.0 OK
18 ST4+ST13 (OCC) +X WIND+ SUS 24,986 24,749 101.0 MARGINAL
19 ST4+ST14 (OCC) -X WIND+ SUS 26,259 24,749 106.0 MARGINAL
20 ST4+ST15 (OCC) +Z WIND+ SUS 27,155 24,749 110.0 MARGINAL
21 ST4+ST16 (OCC) -Z WIND+ SUS 27,442 24,749 111.0 MARGINAL
Table 10.2 Maximum stresses for seismic (dynamic) load cases according to ASME ND
LoadCaseNo.
Load Case DescriptionStresses (psi)
% OFAllowable
StatusActual Allow.
6 W+P1+F1+SEISMIC (OCC) 24,604 24,749 99.0 OK
7 W+P1+F1+WIN1+SEISMIC (OCC) 30,10524,749
122.0NOT
QUALIFIED
8 W+P1+F1+WIN2+SEISMIC (OCC) 25,784 24,749 104.0 MARGINAL
9 W+P1+F1+WIN3+SEISMIC (OCC) 29,44524,749
119.0NOT
QUALIFIED
10 W+P1+F1+WIN4+SEISMIC (OCC) 28,832 24,749 117.0NOT
QUALIFIED
The nozzle loadings of connecting equipments obtained by the piping analysis are given below.
The forces are in kgf and the moments are in kgf-m.
DESIGN AND WIND (STATIC)
NODE: 11 (PUMP 12-P-122/222A DISCHARGE)
NODE Load Case FX Kg FY Kg FZ Kg MX Kg.m. MY Kg.m. MZ Kg.m.
11 3 (OPE) 53 -25 31 4.1 6.6 -13.2
4 (SUS) 2 -18 0 -0.1 -0.1 -0.6
5 (OPE) 101 -18 48 8.1 3.1 -31.4
6 (OPE) -6 -21 18 1.8 8.0 9.4
7 (OPE) 54 -23 95 23.1 22.9 -14.6
8 (OPE) 35 -35 -37 -15.9 -9.6 -4.3
MAX 101/5 -35/8 95/7 23.1/7 22.9/7 -31.4/5
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Retrofitting Scheme for Piping
NODE: 701 (PUMP 12-P-122/22S DISCHARGE)
701 3 (OPE) 7 3 89 18.7 32.8 4.4
4 (SUS) -0 -18 0 0.1 0.1 0.2
5 (OPE) 50 11 94 19.9 26.9 -11.9
6 (OPE) -35 21 82 17.5 35.5 18.6
7 (OPE) 12 14 212 49.8 64.3 -0.3
8 (OPE) 12 2 -26 -11.1 3.7 3.7
MAX 50/5 21/6 212/7 49.8/7 64.3/7 18.6/6
NODE: 1430 (3RDSTAGE HOT TOWER NOZZLE F1)
1430 3 (OPE) -38 221 -5 193.2 30.6 -33.5
4 (SUS) 1 13 2 34.4 0.6 0.2
5 (OPE) 69 249 -15 229.7 -59.4 -0.9
6 (OPE) -146 194 5 156.8 120.5 -66.0
7 (OPE) -47 244 80 166.7 66.2 -40.9
8 (OPE) -30 199 -89 219.4 -4.3 -26.0
MAX -146/6 249/5 -89/8 229.7/5 120.5/6 -66.0/6
NODE: 15500 (EXCHANGER 12-E-117/217D_N7)
15500 3 (OPE) -342 -342 716 -47.2 146.9 -349.8
4 (SUS) 1 106 -9 0.3 1.8 -0.1
5 (OPE) -701 -379 842 -113.4 -209.1 -639.3
6 (OPE) 56 -325 621 5.3 557.6 -30.2
7 (OPE) -335 -317 506 66.6 62.5 -326.3
8 (OPE) -336 -377 932 -162.1 260.6 -366.5
MAX -701/5 -379/5 932/8 -162.1/8 557.6/6 -639.3/5
NODE: 16300 (EXCHANGER 12-E-118/218A_N2)
16300 3 (OPE) -46 -1190 -162 -602.9 -51.5 779.8
4 (SUS) -19 -294 -9 -195.1 22.3 213.8
5 (OPE) -216 -1275 -162 -658.6 -38.4 700.8
6 (OPE) 125 -1101 -160 -547.4 -64.4 857.6
7 (OPE) -39 -1266 -320 -633.3 -147.0 817.7
8 (OPE) -50 -1107 -2 -570.3 47.4 746.5MAX -216/5 -1275/5 -320/7 -658.6/5 -147.0/7 857.6/6
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Retrofitting Scheme for Piping
NODE: 16400 (EXCHANGER 12-E-118/218A_N1)
16400 3 (OPE) 102 -1313 -1138 -132.3 -208.7 83.1
4 (SUS) 9 153 21 5.5 11.7 25.0
5 (OPE) -163 -1177 -1177 -119.0 51.0 -62.0
6 (OPE) 394 -1460 -1056 -177.3 -492.2 260.2
7 (OPE) 66 -1403 -1438 19.4 -184.9 89.1
8 (OPE) 172 -1277 -828 -302.0 -260.6 123.6
MAX 394/6 -1460/6 -1438/7 -302.0/8 -492.2/6 260.2/6
NODE: 17300 (EXCHANGER 12-E-118/218B_N2)
17300 3 (OPE) 115 -846 203 702.1 55.7 -239.5
4 (SUS) 1 94 2 -2.2 0.7 0.6
5 (OPE) 28 -840 215 708.7 -9.9 -191.9
6 (OPE) 209 -846 191 696.6 117.5 -285.1
7 (OPE) 129 -818 106 649.8 78.3 -234.1
8 (OPE) 108 -866 296 752.8 32.4 -242.6
MAX 209/6 -866/8 296/8 752.8/8 117.5/6 -285.1/6
SEISMIC CASES (DYNAMIC)
Load Case 6. Design + Seismic
NODE FX FY FZ MX MY MZ
11 84 51 62 10 18 27
701 31 28 138 28 48 16
1430 59 250 29 216 56 40
15500 440 364 799 92 249 43816300 80 1266 196 641 109 852
16400 196 1379 1231 182 321 140
17300 137 866 226 714 82 254
Load Case 7. Design +X Wind + Seismic
11 131 44 80 14 15 46
701 75 36 144 30 42 24
1430 91 278 39 252 84 8
15300 3858 26783 186 42 2 164
16300 250 1350 197 696 96 77316400 257 1244 1270 168 163 119
17300 50 859 238 720 36 207
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Retrofitting Scheme for Piping
Load Case 8. Design -X Wind + Seismic
11 37 48 50 8 20 24
701 60 46 131 27 51 30
1430 167 223 29 179 145 73
15300 3882 27016 198 47 3 170
16300 159 1177 194 585 122 930
16400 488 1527 1149 227 604 317
17300 230 865 214 708 144 300
Load Case 9. Design +Z Wind + Seismic
11 85 50 126 29 35 29
701 36 39 261 60 79 12
1430 68 273 104 189 91 48
15300 3873 26877 165 43 2 16816300 73 1341 354 671 204 890
16400 160 1470 1531 69 297 146
17300 151 837 129 661 105 249
Load Case 10. Design -Z Wind + Seismic
11 66 61 68 22 21 19
701 37 27 75 21 19 15
1430 51 228 113 242 29 33
15300 3869 26901 212 45 3 167
16300 84 1183 36 608 105 819
16400 266 1344 921 351 373 18017300 130 886 319 764 59 258
10.3 CONCLUSION
The piping stress analysis has been carried out for the piping Pumps (12-P-122/222A/S)
discharge to nozzle N1 & N2 ofexchanger 12-E-118/218A/B , nozzle N7 of exchanger 12-E-
117A and nozzle F1 of 3rd Stage Hot Tower (12-C-110/210) after proposed retrofitting
modifications.
The results indicate that the stresses for the individual wind and seismic load cases are
marginally exceeding the allowables. Hence the system may be deemed to quality the design
adequacy re-evaluation after retrofitting.
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Retrofitting Scheme for Piping
11.0 Piping loop having Document number A375-000-16-43-ADC-0062
11.1 PROPOSED RETROFITTING
Table 11.1 Suggested modifications in supports
NodeNo.
Previous support New Support Remarks
155B43-7-1705/525-200, S3-A-1-4
B43-7-1705/525-200, S3-A-2-4,
S3-A-5-4Guide in Z with 15 mm gap, Guide X with 3.0 mm gap
140 L6-1-1495 L7A-1-1495-S Guide Z
11.2 RESULTS AFTER RETROFITTING
Table 11.2 Maximum stresses for design and wind (static) load cases
LoadCaseNo.
CAESAR Load Case DescriptionStresses (psi) % of
AllowableStatus
Actual Allow.
4 W+P1+F1 (SUS) SUSTAINED 11,134 22,322 50 OK
17 DS3-DS4 (EXP) THERMAL 18,888 34,469 55 OK
18 ST4+ST13 (OCC) +X WIND+ SUS 16,550 24,749 67 OK
19 ST4+ST14 (OCC) -X WIND+ SUS 18,349 24,749 74 OK
20 ST4+ST15 (OCC) +Z WIND+ SUS 20,024 24,749 81 OK
21 ST4+ST16 (OCC) -Z WIND+ SUS 22,343 24,749 90 OK
Table 11.3 Maximum stresses for seismic (dynamic) load cases
LoadCaseNo.
Load Case DescriptionStresses (psi)
% ofAllowable
StatusActual Allow.
6 W+P1+F1+SEISMIC (SUS) 24,499 24,749 99 OK
7 W+P1+F1+WIN1+SEISMIC (OCC) 28,542 24,749 115NOT
QUALIFIED
8 W+P1+F1+WIN2+SEISMIC (OCC) 29,627 24,749 120NOT
QUALIFIED
9 W+P1+F1+WIN3+SEISMIC (OCC) 30,833 24,749 125NOT
QUALIFIED
10 W+P1+F1+WIN4+SEISMIC (OCC) 30,488 24,749 123NOT
QUALIFIED
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Retrofitting Scheme for Piping
The actual loading obtained on the nozzles of connecting equipments by the piping analysis is
given below. The forces are in kgf and the moments are in kgf-m.
DESIGN AND WIND (STATIC)
NODE: 1 (3RD STAGE COLD TOWER NOZZLE F1)
NODE Load Case FX Kg FY Kg FZ Kg MX Kg.m. MY Kg.m. MZ Kg.m.
1 3 (OPE) -26 294 -4 258.7 24.3 64.8
4 (SUS) -0 -111 -0 -43.9 2.0 1.2
5 (OPE) 118 301 -7 264.7 -68.6 114.9
6 (OPE) -167 239 -0 216.1 121.6 7.7
7 (OPE) -30 296 116 222.3 -26.1 57.5
8 (OPE) -22 293 -123 295.4 74.9 72.1
MAX -167/6 301/5 -123/8 295.4/8 121.6/6 114.9/5
NODE: 24400 (EXCHANGER 12-E-120/220_N1)
24400 3 (OPE) 114 133 -29 41.6 -16.1 116.6
4 (SUS) -24 108 6 -3.4 5.1 -4.55 (OPE) 82 129 -31 39.6 -14.9 99.1
6 (OPE) 147 131 -29 41.5 -17.6 135.8
7 (OPE) 77 132 -68 64.4 -10.8 86.4
8 (OPE) 186 117 -15 59.2 -11.2 158.9
MAX 186/8 133/3 -68/7 64.4/7 -17.6/6 158.9/8
SEISMIC CASES (DYNAMIC)
Load Case 6. Design + Seismic
NODE FX FY FZ MX MY MZ
1 113 554 55 450 82 11724400 156 147 45 71 38 156
Load Case 7. Design +X Wind + Seismic
1 206 561 58 456 126 16724400 124 143 46 69 36 139
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Retrofitting Scheme for Piping
Load Case 8. Design -X Wind + Seismic
1 254 500 51 407 179 6024400 189 145 44 70 39 176
Load Case 9. Design +Z Wind + Seismic
1 117 556 167 413 84 11024400 119 146 83 93 32 126
Load Case 10. Design -Z Wind + Seismic
1 109 553 175 486 133 12424400 228 131 30 88 33 199
11.3 CONCLUSION
The piping stress analysis has been carried out for the piping from nozzle N1 of Exchanger
(12-E-120/220) to nozzle F1 of 3rd Stage Cold Tower (12-C-111/211) after proposed retrofitting
modifications.
The results indicate that the stresses for the individual wind and seismic load cases are within
the allowable stresses. Hence the system may be deemed to qualify the design adequacy re-
evaluation after retrofitting.
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Retrofitting Scheme for Piping
12.0 Piping loop having Document number A375-000-16-43-ADC-0063
12.1 PROPOSED RETROFITTING
Table 12.1 Suggested modifications in supports (In addition to modifications specified for loophaving Document number A375-000-16-43-ADC-0065)
NodeNo.
Previous support New SupportRemarks
220 S3-A-1-2 S3-A-4-2& without
Y guide
2620 S3-A-1-4 S3-A-2-4 With 12 mm gap in +X & 0 mm gap in -X
2625 --- S3-A-2-4
12.2 RESULTS AFTER RETROFITTING
Table 12.2 Maximum stresses for design and wind (static) load cases
LoadCaseNo.
CAESAR Load Case DescriptionStresses (psi) % of
AllowableStatus
Actual Allow.
4 W+P1+F1 (SUS) SUSTAINED 19121.5 22808.0 83.8 OK13 DS3-DS4 (EXP) THERMAL 31116.3 29133.4 106.8 Marginal
18 ST4+ST14 (OCC) +X WIND+SEISMIC 26397.6 24749.1 106.7 Marginal
19 ST4+ST15 (OCC) -X WIND+SEISMIC 24136.7 30780.0 78.4 OK
20 ST4+ST16 (OCC) +Z WIND+SEISMIC 24726.8 30780.0 80.3 OK
21 ST4+ST17 (OCC) -Z WIND+SEISMIC 24703.2 30780.0 80.3 OK
Table 12.3 Maximum stresses for seismic (dynamic) load cases
Load
CaseNo.
Load Case Description
Stresses (psi)
% OFAllowable
StatusActual Allow.
6 W+P1+F1+SEISMIC (OCC) 25405.3 25343.0 100.2 Marginal
7 W+P1+F1+WIN1+SEISMIC (OCC) 20897.2 25343.0 82.5 OK
8 W+P1+F1+WIN2+SEISMIC (OCC) 22353.7 24749.1 90.3 OK
9 W+P1+F1+WIN3+SEISMIC (OCC) 23367.5 24749.1 94.4 OK
10 W+P1+F1+WIN4+SEISMIC (OCC) 22353.8 24749.1 90.3 OK
The nozzle loadings of connecting equipments obtained by the piping analysis are given below.
The forces are in kgf and the moments are in kgf-m.
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Retrofitting Scheme for Piping
DESIGN AND WIND (STATIC)
NODE: 1 (DISCHARGE NOZZLE OF PUMP 12-P-129)
CASE TYPE FX FY FZ MX MY MZ
3 (OPE) 119 -18 57 16.7 30.1 -40.4
4 (SUS) 18 -17 -1 -0.1 -0.1 -4.8
5 (OPE) 148 -22 57 16.6 30.1 -48.6
6 (OPE) 91 -10 56 16.3 29.8 -33.5
7 (OPE) 115 -15 57 16.4 29.5 -39.7
8 (OPE) 123 -21 58 16.8 30.7 -40.8
MAX 148/5 -22/5 58/8 16.8/8 30.7/8 -48.6/5
NODE: 2 (F1 NOZZLE OF 12-V-106)
3 (OPE) 446 183 -99 4.3 -160.6 -482.2
4 (SUS) -26 -82 -3 -6.6 -12.1 22.2
5 (OPE) 535 199 -102 9.9 -157.9 -509.4
6 (OPE) 351 164 -96 -1.1 -162.7 -452.3
7 (OPE) 462 195 28 38.0 -10.5 -504.2
8 (OPE) 452 186 -243 -18.6 -369.1 -480.4
MAX 535/5 199/5 -243/8 38.0/7 -369.1/8 -509.4/5
NODE: 9150 (DISCHARGE NOZZLE OF PUMP 12-P-120A)
3 (OPE) 68 -119 -72 -11.6 7.0 -18.3
4 (SUS) -1 -23 6 3.3 1.9 0.7
5 (OPE) 69 -119 -71 -11.4 7.6 -18.9
6 (OPE) 66 -119 -73 -11.8 6.5 -17.6
7 (OPE) 67 -119 -62 -9.7 9.7 -18.1
8 (OPE) 68 -119 -81 -13.5 4.4 -18.4
MAX 69/5 -119/6 -81/8 -13.5/8 9.7/7 -18.9/5
NODE: 3170 (DISCHARGE NOZZLE OF PUMP 12-P-120S)
3 (OPE) 113 -44 -51 -8.5 12.5 -41.5
4 (SUS) 0 -22 3 1.6 0.8 0.1
5 (OPE) 114 -44 -52 -8.6 12.5 -42.2
6 (OPE) 111 -44 -51 -8.5 12.4 -41.0
7 (OPE) 111 -47 -47 -7.5 13.1 -40.6
8 (OPE) 114 -42 -55 -9.5 12.1 -42.1
MAX 114/5 -47/7 -55/8 -9.5/8 13.1/7 -42.2/5
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Retrofitting Scheme for Piping
NODE: 4 (N2 NOZZLE OF EXCHANGER 12-E-116C)
3 (OPE) 4 193 -42 -145.2 10.8 26.5
4 (SUS) -1 -47 -2 -0.3 -1.1 0.2
5 (OPE) 25 193 -44 -146.6 18.5 17.3
6 (OPE) -21 193 -40 -144.6 -1.1 36.5
7 (OPE) 3 190 -21 -136.3 7.0 26.7
8 (OPE) 4 195 -63 -154.4 13.1 26.5
MAX 25/5 195/8 -63/8 -154.4/8 18.5/5 36.5/6
NODE: 18 (N7 NOZZLE OF EXCHANGER 12-E-116B)
3 (OPE) -26 -213 -8 -57.8 21.5 -40.4
4 (SUS) 20 -205 -3 -55.9 -6.8 37.8
5 (OPE) -14 -212 -8 -56.8 18.5 -24.6
6 (OPE) -36 -214 -8 -59.5 23.4 -53.9
7 (OPE) -27 -213 -2 -65.5 21.1 -42.0
8 (OPE) -25 -213 -14 -51.4 21.6 -40.1
MAX -36/6 -214/6 -14/8 -65.5/7 23.4/6 -53.9/6
NODE: 6 (N2 NOZZLE OF EXCHANGER 12-E-112B)
3 (OPE) -56 -90 -21 24.3 -22.0 25.0
4 (SUS) -42 -82 -20 21.3 -10.2 22.9
5 (OPE) -36 -91 -21 23.9 -10.9 15.3
6 (OPE) -74 -89 -19 25.4 -32.2 33.5
7 (OPE) -53 -91 -2 33.2 -32.7 22.1
8 (OPE) -57 -88 -39 16.0 -11.1 26.7
MAX -74/6 -91/7 -39/8 33.2/7 -32.7/7 33.5/6
NODE: 3 (N1 NOZZLE OF EXCHANGER 12-E-112A)
3 (OPE) -8 -110 -77 46.0 -11.4 1.2
4 (SUS) 5 -155 34 -13.2 0.3 5.2
5 (OPE) 14 -112 -67 39.6 0.2 12.5
6 (OPE) -29 -108 -80 48.1 -24.9 -7.4
7 (OPE) -9 -116 -50 29.7 -11.9 -3.7
8 (OPE) -6 -105 -102 61.2 -10.7 6.6
MAX -29 -155 -102 61.2 -24.9 12.5
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Retrofitting Scheme for Piping
NODE: 12 (N2 NOZZLE OF EXCHANGER 12-E-112A)
3 (OPE) -3 -87 5 -18.9 3.7 -1.6
4 (SUS) -0 -132 19 24.2 2.0 3.0
5 (OPE) 20 -89 -1 -23.4 11.2 -11.7
6 (OPE) -34 -86 8 -16.6 -14.3 17.5
7 (OPE) -4 -75 82 38.1 8.1 -4.0
8 (OPE) -3 -98 -74 -77.3 -0.9 1.0
MAX -34/6 -132/4 82/7 -77.3/8 -14.3/6 17.5/6
NODE: 22 (N7 NOZZLE OF EXCHANGER 12-E-116D)
3 (OPE) -59 -124 -10 31.6 -23.8 -108.4
4 (SUS) 7 -126 3 13.6 1.4 10.9
5 (OPE) -39 -123 -10 31.6 -17.4 -75.8
6 (OPE) -79 -125 -11 32.6 -29.7 -139.6
7 (OPE) -53 -122 -2 33.1 -18.4 -91.6
8 (OPE) -58 -127 -17 27.8 -26.5 -110.1
MAX -79/6 -127/8 -17/8 33.1/7 -29.7/6 -139.6/6
SEISMIC CASES (DYNAMIC)
Load Case 1. Design + Seismic
NODE FX FY FZ MX MY MZ
1 169 27 85 24 56 582 482 204 123 15 209 5103 27 122 117 75 32 20
3170 140 71 84 14 23 549150 98 149 117 19 22 33
4 20 213 55 151 25 406 78 96 43 39 59 3612 23 102 67 67 26 2222 94 137 30 75 40 174
18 59 235 42 135 42 102
Load Case 2. Design +X Wind + Seismic
1 197 31 85 24 56 662 571 220 126 20 207 5373 33 124 108 68 21 31
3170 142 71 85 14 23 559150 100 148 116 19 22 33
4 40 214 57 153 33 306 58 97 44 39 48 2612 39 104 63 72 33 3222 74 137 29 75 33 141
18 48 233 42 134 39 86
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Retrofitting Scheme for Piping
Load Case 3. Design -X Wind + Seismic
1 140 18 84 24 56 512 387 185 120 11 211 4803 49 120 120 77 46 26
3170 138 72 84 14 23 549150 97 149 118 19 21 32
4 37 213 53 151 15 506 97 95 42 40 69 4412 53 101 70 65 36 3822 113 138 30 76 46 20518 69 236 42 137 44 115
Load Case 4. Design +Z Wind + Seismic
1 164 24 85 24 56 572 498 216 52 48 59 5323 29 127 91 58 33 22
3170 138 74 80 13 24 539150 98 149 108 17 25 32
4 18 211 34 142 21 406 75 98 25 48 70 3312 23 90 145 87 30 2422 87 136 21 76 34 15718 60 235 35 143 42 103
Load Case 5. Design -Z Wind + Seismic
1 173 30 86 25 57 582 488 207 267 29 418 5083 26 116 142 90 31 25
3170 141 69 88 15 23 559150 99 149 127 21 19 334 20 216 76 160 27 406 79 95 61 31 48 3712 22 114 137 126 23 2122 93 140 37 71 42 17518 59 235 48 129 42 102
12.3 CONCLUSION
The piping stress analysis has been carried out for piping loop from 3HT transfer pumps(12-P-
120) discharge to 3CT (12-C-111) after proposed retrofitting modifications.
The results indicate that the stresses for the individual wind and seismic load cases marginally
exceed the allow