This analysis is intent to check stresses on skirt and basering. Thus, calculation provided in this section is only related to that such input echo, wind & earthquake, combines load stress and basering
calculation. Full analysis / reports, shall refer to section B “Operating Case”
FileName : S-6504ABCD-STORM CASE (LOAD CASE 100 YEAR) REV. – Page 193 Input Echo : Step: 1 9:32a May 7,2014
PV Elite Vessel Analysis Program: Input Data Design Internal Pressure (for Hydrotest) 16.000 bar Design Internal Temperature 60 C Type of Hydrotest User Defined Hydro Hydrotest Position Horizontal Projection of Nozzle from Vessel Top 0.0000 mm Projection of Nozzle from Vessel Bottom 150.00 mm Minimum Design Metal Temperature 0 C Type of Construction Welded Special Service None Degree of Radiography RT-1 Miscellaneous Weight Percent 5.0 Use Higher Longitudinal Stresses (Flag) Y Select t for Internal Pressure (Flag) N Select t for External Pressure (Flag) N Select t for Axial Stress (Flag) N Select Location for Stiff. Rings (Flag) N Consider Vortex Shedding N Perform a Corroded Hydrotest N Is this a Heat Exchanger No User Defined Hydro. Press. (Used if > 0) 25.481 bar User defined MAWP 0.0000 bar User defined MAPnc 0.0000 bar Load Case 1 NP+OW+WI+EQ+FS+FW+BW Load Case 2 NP+OW+EQ+WI+FW+FS+BS Load Case 3 IP+OW+WI+EQ+FS+FW+BW Load Case 4 IP+OW+EQ+WI+FW+FS+BS Load Case 5 EP+OW+WI+EQ+FS+FW+BW Load Case 6 EP+OW+EQ+WI+FW+FS+BS Load Case 7 IP+VO+OW Load Case 8 NP+VO+OW Load Case 9 FW+FS+BW+BS+IP+OW Load Case 10 FS+FW+BW+BS+EP+OW Wind Design Code User Defined Wind Profile Height mm Pressure KN/m² 19663.9980 2.3940 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Damping Factor (Beta) for Wind (Ope) 0.0100 Damping Factor (Beta) for Wind (Empty) 0.0000 Damping Factor (Beta) for Wind (Filled) 0.0000
FileName : S-6504ABCD-STORM CASE (LOAD CASE 100 YEAR) REV. – Page 194
Input Echo : Step: 1 9:32a May 7,2014 Seismic Design Code G Loading Seismic Importance Factor 1.000 G Loading Coefficient Gx 0.115 G Loading Coefficient Gz 0.115 G Loading Coefficient Gy 0.052 Percent Seismic for Hydrotest 100.000 Consider MAP New and Cold in Noz. Design N Consider External Loads for Nozzle Des. Y Use ASME VIII-1 Appendix 1-9 N Material Database Year Current w/Addenda or Code Year Configuration Directives:
Do not use Nozzle MDMT Interpretation VIII-1 01-37 No Use Table G instead of exact equation for "A" Yes Shell Head Joints are Tapered Yes Compute "K" in corroded condition Yes Use Code Case 2286 No Use the MAWP to compute the MDMT Yes Using Metric Material Databases, ASME II D No Complete Listing of Vessel Elements and Details:
Element From Node 10 Element To Node 20
Element Type Skirt Sup.
Description SKIRT Distance "FROM" to "TO" 850.00 mm Skirt Outside Diameter 2468.0 mm Diameter of Skirt at Base 2468.0 mm Skirt Thickness 9.5300 mm Internal Corrosion Allowance 0.0000 mm Nominal Thickness 9.5300 mm External Corrosion Allowance 0.0000 mm Design Temperature Internal Pressure 60 C Design Temperature External Pressure 60 C Effective Diameter Multiplier 1.2 Material Name SA-516 70 Allowable Stress, Ambient 1379.0 bar Allowable Stress, Operating 1379.0 bar Allowable Stress, Hydrotest 2358.0 bar Material Density 7750.4 kg/m³ P Number Thickness 31.750 mm Yield Stress, Operating 2493.2 bar UCS-66 Chart Curve Designation B External Pressure Chart Name CS-2 UNS Number K02700 Product Form Plate Efficiency, Longitudinal Seam 0.7 Efficiency, Head-to-Skirt or Circ. Seam 0.7
FileName : S-6504ABCD-STORM CASE (LOAD CASE 100 YEAR) REV. – Page 195
Input Echo : Step: 1 9:32a May 7,2014 --- Element From Node 20 Element To Node 30 Element Type Elliptical Description BOTTOM HEAD Distance "FROM" to "TO" 50.000 mm Inside Diameter 2430.0 mm Element Thickness 18.000 mm Internal Corrosion Allowance 3.0000 mm Nominal Thickness 22.200 mm External Corrosion Allowance 0.0000 mm Design Internal Pressure 16.000 bar Design Temperature Internal Pressure 60 C Design External Pressure 1.0342 bar Design Temperature External Pressure 60 C Effective Diameter Multiplier 1.2 Material Name [Normalized] SA-516 70 Efficiency, Longitudinal Seam 1.0 Efficiency, Circumferential Seam 1.0 Elliptical Head Factor 2.0 Element From Node 20 Detail Type Liquid Detail ID SEA WATER Dist. from "FROM" Node / Offset dist -607.50 mm Height/Length of Liquid 657.50 mm Liquid Density 1014.0 kg/m³ Element From Node 20 Detail Type Nozzle Detail ID N5 Dist. from "FROM" Node / Offset dist 0.0000 mm Nozzle Diameter 50.799999 mm Nozzle Schedule None Nozzle Class 150 Layout Angle 180.0 Blind Flange (Y/N) N Weight of Nozzle ( Used if > 0 ) 0.0000 N Grade of Attached Flange GR 1.1 Nozzle Matl [Normalized] SA-105 Element From Node 20 Detail Type Weight Detail ID INT.PLATE
Dist. from "FROM" Node / Offset dist 50.000 mm Miscellaneous Weight 4961.8 N Offset from Element Centerline 0.0000 mm --- Element From Node 30 Element To Node 40
FileName : S-6504ABCD-STORM CASE (LOAD CASE 100 YEAR) REV. – Page 196
Input Echo : Step: 1 9:32a May 7,2014 Element Type Cylinder Description SHELL Distance "FROM" to "TO" 1730.0 mm Inside Diameter 2430.0 mm Element Thickness 19.050 mm Internal Corrosion Allowance 3.0000 mm Nominal Thickness 19.050 mm External Corrosion Allowance 0.0000 mm Design Internal Pressure 16.000 bar Design Temperature Internal Pressure 60 C Design External Pressure 1.0342 bar Design Temperature External Pressure 60 C Effective Diameter Multiplier 1.2 Material Name [Normalized] SA-516 70 Efficiency, Longitudinal Seam 1.0 Efficiency, Circumferential Seam 1.0 Element From Node 30 Detail Type Packing
Detail ID SAND Dist. from "FROM" Node / Offset dist 0.0000 mm Height of Packed Section 127.00 mm Density 1612.9 kg/m³ Percent Volume Holdup 40.0364 Specific Gravity of Packing Liquid 1.0140001 Element From Node 30 Detail Type Packing Detail ID COARSE GARNET Dist. from "FROM" Node / Offset dist 127.00 mm Height of Packed Section 229.00 mm Density 2375.6 kg/m³ Percent Volume Holdup 44.965 Specific Gravity of Packing Liquid 1.0140001 Element From Node 30 Detail Type Packing Detail ID FINE GARNET Dist. from "FROM" Node / Offset dist 356.00 mm Height of Packed Section 483.00 mm Density 2162.0 kg/m³ Percent Volume Holdup 49.950001 Specific Gravity of Packing Liquid 1.0140001 Element From Node 30 Detail Type Packing Detail ID COARSE ANTHRACI Dist. from "FROM" Node / Offset dist 839.00 mm Height of Packed Section 330.00 mm Density 850.72 kg/m³ Percent Volume Holdup 50.029999 Specific Gravity of Packing Liquid 1.0140001
FileName : S-6504ABCD-STORM CASE (LOAD CASE 100 YEAR) REV. – Page 197
Input Echo : Step: 1 9:32a May 7,2014 Element From Node 30 Detail Type Nozzle Detail ID N1 Dist. from "FROM" Node / Offset dist 1453.0 mm Nozzle Diameter 200.0 mm Nozzle Schedule 160 Nozzle Class 150 Layout Angle 0.0 Blind Flange (Y/N) N Weight of Nozzle ( Used if > 0 ) 0.0000 N Grade of Attached Flange GR 1.1 Nozzle Matl SA-106 B Element From Node 30 Detail Type Nozzle Detail ID N2 Dist. from "FROM" Node / Offset dist 277.00 mm Nozzle Diameter 200.0 mm Nozzle Schedule 160 Nozzle Class 150 Layout Angle 144.0 Blind Flange (Y/N) N Weight of Nozzle ( Used if > 0 ) 0.0000 N Grade of Attached Flange GR 1.1 Nozzle Matl SA-106 B Element From Node 30 Detail Type Nozzle Detail ID N3 Dist. from "FROM" Node / Offset dist 1493.0 mm Nozzle Diameter 150.0 mm Nozzle Schedule 160 Nozzle Class 150 Layout Angle 21.3862 Blind Flange (Y/N) N Weight of Nozzle ( Used if > 0 ) 0.0000 N Grade of Attached Flange GR 1.1
Nozzle Matl SA-106 B Element From Node 30 Detail Type Nozzle Detail ID H1 Dist. from "FROM" Node / Offset dist 365.00 mm Nozzle Diameter 300.0 mm Nozzle Schedule 120 Nozzle Class 150 Layout Angle 165.0 Blind Flange (Y/N) Y Weight of Nozzle ( Used if > 0 ) 0.0000 N Grade of Attached Flange GR 1.1 Nozzle Matl SA-106 B Element From Node 30
FileName : S-6504ABCD-STORM CASE (LOAD CASE 100 YEAR) REV. – Page 198
Input Echo : Step: 1 9:32a May 7,2014 Detail Type Weight Detail ID DIST. & HEADER Dist. from "FROM" Node / Offset dist 865.00 mm Miscellaneous Weight 4118.5 N Offset from Element Centerline 0.0000 mm Element From Node 30 Detail Type Weight Detail ID ANODES Dist. from "FROM" Node / Offset dist 1258.0 mm Miscellaneous Weight 784.48 N
Offset from Element Centerline 0.0000 mm --- Element From Node 40 Element To Node 50 Element Type Elliptical Description TOP HEAD Distance "FROM" to "TO" 50.000 mm Inside Diameter 2430.0 mm Element Thickness 18.000 mm Internal Corrosion Allowance 3.0000 mm Nominal Thickness 22.200 mm External Corrosion Allowance 0.0000 mm Design Internal Pressure 16.000 bar Design Temperature Internal Pressure 60 C Design External Pressure 1.0342 bar Design Temperature External Pressure 60 C Effective Diameter Multiplier 1.2 Material Name [Normalized] SA-516 70 Efficiency, Longitudinal Seam 1.0 Efficiency, Circumferential Seam 1.0 Elliptical Head Factor 2.0 Element From Node 40 Detail Type Nozzle Detail ID N4 Dist. from "FROM" Node / Offset dist 803.00 mm Nozzle Diameter 80.0 mm Nozzle Schedule 160 Nozzle Class 150 Layout Angle 240.0 Blind Flange (Y/N) N Weight of Nozzle ( Used if > 0 ) 0.0000 N Grade of Attached Flange GR 1.1 Nozzle Matl SA-106 B Element From Node 40 Detail Type Nozzle Detail ID M1 Dist. from "FROM" Node / Offset dist 535.00 mm Nozzle Diameter 762.0 mm
FileName : S-6504ABCD-STORM CASE (LOAD CASE 100 YEAR) REV. – Page 199
Input Echo : Step: 1 9:32a May 7,2014 Nozzle Schedule None Nozzle Class 150 Layout Angle 45.0 Blind Flange (Y/N) Y Weight of Nozzle ( Used if > 0 ) 0.0000 N Grade of Attached Flange GR 1.1 Nozzle Matl [Normalized] SA-516 70 PV Elite is a trademark of Intergraph CADWorx & Analysis Solutions, Inc. 2012
FileName : S-6504ABCD-STORM CASE (LOAD CASE 100 YEAR) REV. – Page 200
Wind Load Calculation : Step: 8 9:32a May 7,2014 Note: Using the User Defined Wind Profile ...
Wind Vibration Calculations This evaluation is based on work by Kanti Mahajan and Ed Zorilla Nomenclature Cf - Correction factor for natural frequency D - Average internal diameter of vessel mm Df - Damping Factor < 0.75 Unstable, > 0.95 Stable Dr - Average internal diameter of top half of vessel mm f - Natural frequency of vibration (Hertz) f1 - Natural frequency of bare vessel based on a unit value of (D/L²)(10^(4))
L - Total height of structure mm Lc - Total length of conical section(s) of vessel mm tb - Uncorroded plate thickness at bottom of vessel mm V30 - Design Wind Speed provided by user m/sec Vc - Critical wind velocity m/sec Vw - Maximum wind speed at top of structure m/sec W - Total corroded weight of structure N Ws - Cor. vessel weight excl. weight of parts which do not effect stiff. N Z - Maximum amplitude of vibration at top of vessel mm Dl - Logarithmic decrement ( taken as 0.03 for Welded Structures ) Vp - Vib. Chance, <= 0.314E-05 (High); 0.314E-05 < 0.393E-05 (Probable) P30 - wind pressure 30 feet above the base Check other Conditions and Basic Assumptions:
#1 - Total Cone Length / Total Length < 0.5 0.000/2680.000 = 0.000
#2 - ( D / L² ) * 10^(4) < 8.0 (English Units) - ( 8.10/8.79² ) * 10^(4) = 1047.343 [Geometry Violation]
Compute the vibration possibility. If Vp > 0.393E-05 no chance. [Vp]:
= W / ( L * Dr²) = 217566/( 2680.00 * 2436.000² ) = 0.13681E-04 Since Vp is > 0.393E-05 no further vibration analysis is required ! Platform Load Calculations ID Wind Area Elevation Pressure Force Cf
cm² mm KN/m² N --- Wind Loads on Masses/Equipment/Piping
FileName : S-6504ABCD-STORM CASE (LOAD CASE 100 YEAR) REV. – Page 201
Wind Load Calculation : Step: 8 9:32a May 7,2014 ID Wind Area Elevation Pressure Force cm² mm KN/m² N --- INT.PLATE 0.00 20564.00 2.39 0.00 DIST. & HEADE 0.00 21429.00 2.39 0.00 ANODES 0.00 21822.00 2.39 0.00 The Natural Frequency for the Vessel (Ope...) is 43.5337 Hz.
Wind Load Calculation | | Wind | Wind | Wind | Wind | Element | From| To | Height | Diameter | Area | Pressure | Wind Load | | | mm | mm | cm² | KN/m² | N | --- 10| 20| 20089.0 | 2961.60 | 25173.6 | 2.39400 | 6026.42 | 20| 30| 20539.0 | 2959.20 | 1479.60 | 2.39400 | 354.208 | 30| 40| 21429.0 | 2961.72 | 51237.8 | 2.39400 | 12266.0 | 40| 50| 22582.6 | 2959.20 | 16017.2 | 2.39400 | 3834.42 | PV Elite is a trademark of Intergraph CADWorx & Analysis Solutions, Inc. 2012