Combined Stress Caclulation_Pvelite

PV Elite 2012 Licensee: L&T HED FileName : Combined load calc_Head Only ------------------ Page 1 of 2 Stress due to Combined Loads : Step: 13 11:37a Jun 23,2012

Stress Combination Load Cases for Vertical Vessels: Load Case Definition Key IP EP HP NP EW OW HW WI EQ EE HI HE WE WF CW VO VE VF FW FS BW BS BN BU

= = = = = = = = = = = = = = = = = = = = = = = =

Longitudinal Stress due to Internal Internal Pressure Longitudinal Stress due to External External Pressure Longitudinal Stress due to Hydrotest Pressure No Pressure Longitudinal Stress due to Weight (No Liquid) Longitudinal Stress due to Weight (Operating) Longitudinal Stress due to Weight (Hydrotest) Bending Stress due to Wind Moment (Operating) Bending Stress due to Earthquake Moment (Operating) Bending Stress due to Earthquake Moment (Empty) Bending Stress due to Wind Moment (Hydrotest) Bending Stress due to Earthquake Moment (Hydrotest) Bending Stress due to Wind Moment (Empty) (no CA) Bending Stress due to Wind Moment (Filled) (no CA) Longitudinal Stress due to Weight (Empty) (no CA) Bending Stress due to Vortex Shedding Loads ( Ope ) Bending Stress due to Vortex Shedding Loads ( Emp ) Bending Stress due to Vortex Shedding Loads ( Test No CA. ) Axial Stress due to Vertical Forces for the Wind Case Axial Stress due to Vertical Forces for the Seismic Case Bending Stress due to Lat. Forces for the Wind Case, Corroded Bending Stress due to Lat. Forces for the Seismic Case, Corroded Bending Stress due to Lat. Forces for the Wind Case, UnCorroded Bending Stress due to Lat. Forces for the Seismic Case, UnCorroded

General Notes:

Case types HI and HE are in the Un-Corroded condition. Case types WE, WF, and CW are in the Un-Corroded condition. condition. A blank stress and stress ratio indicates that the corresponding stress comprising those components components that did not contribute c ontribute to that type of stress. For Division 2, stress Sigma1 is the hoop stress due to internal  pressure. pressure. Stress Sigma2 is the max(abs( max(abs( positive stress, 0.0 )). The positive magnitude of Sigma3 is the 0.5 times the pressure. The stresses are combined per equation 4.3.44 to determine  the overall stress intensity. An asterisk (*) in the final f inal column denotes overstress. overstress. Note: Performing Combined Stress Analysis per VIII-2 paragraph 4.3.10.2.

 Analysis of Load Case 1 : IP F rom Node 10 20 30

Stress Intensity 0.00 100.02 103.78

All. Stress Intensity 136.47 136.47 136.47

Compressive Stress 0.00

All. Comp. Stress Fxa 122.57 122.57 72.31

S. I. Ratio 0.0000 0.7329 0.7605

Comp. Ratio 0.0000

PV Elite 2012 Licensee: L&T HED FileName : Combined load calc_Head Only ------------------ Page 2 of 2 Stress due to Combined Loads : Step: 13 11:37a Jun 23,2012

 Analysis of Load Case 2 : IP+BW F rom Node 10 20 30

Stress Intensity 84.03 110.25 120.47

All. Stress Intensity 136.47 136.47 136.47

Compressive Stress -84.03

All. Comp. Stress Fxa 122.57 122.57 72.31

S. I. Ratio 0.6158 0.8078 0.8827

Comp. Ratio 0.6856

Compressive Stress -80.53

All. Comp. Stress Fxa 122.57 122.57 72.31

S. I. Ratio 0.6414 0.8161 0.9063

Comp. Ratio 0.6570

 Analysis of Load Case 3 : IP+BW+FW From Node 10 20 30

Stress Intensity 87.53 111.37 123.68

All. Stress Intensity 136.47 136.47 136.47

Absolute Maximum of the all of the Stress Ratio's

Element From : 30 to : 40 Governing Load Case Case 3 : IP+BW+FW IP+BW +FW

0.9063

Results as per manual calculation shows higher stress in head than calculated by software

Additional Results per Section 4.4, see 4.4.15 Nomenclature : L Fxa Fba Fva Fha Fxha Fhxa Faha Fbha Fhba

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Section Length mm Allowable comp mem stress due to compression with lamc