Internal Pressure Calculations.docx
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Internal Pressure Calculations.docx
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InternalPressureCalculations
ElementThickness,Pressure,DiameterandAllowableStress:
||Int.Press|Nominal|TotalCorr|Element|Allowable|
From|To|+Liq.Hd|Thickness|Allowance|Diameter|Stress(SE)|
||psig|in.|in.|in.|psi|
---------------------------------------------------------------------------
10|20|100.000|...|0.12500|96.0000|20000.0|
20|30|100.000|...|0.12500|96.0000|20000.0|
30|40|100.000|...|0.12500|96.0000|20000.0|
40|50|...|...|0.12500|96.0000|...|
50|60|...|...|0.12500|96.0000|20000.0|
60|70|100.000|...|0.12500|96.0000|20000.0|
70|80|100.000|...|0.12500|96.0000|20000.0|
80|90|100.000|...|0.12500|96.0000|20000.0|
ElementRequiredThicknessandMAWP:
||Design|M.A.W.P.|M.A.P.|Minimum|Required|
From|To|Pressure|Corroded|New&Cold|Thickness|Thickness|
||psig|psig|psig|in.|in.|
----------------------------------------------------------------------------
10|20|100.000>>>51.4597|104.112|0.25000<<<0.36491|
20|30|100.000>>>51.8672|103.842|0.25000<<<0.36635|
30|40|100.000>>>51.4597|104.112|0.25000<<<0.36491|
40|50|...|NoCalc|NoCalc|0.25000|NoCalc|
50|60|...|51.8672|103.842|0.25000|0.18750|
60|70|100.000>>>51.4597|104.112|0.25000<<<0.36491|
70|80|100.000|103.842|208.117|0.25000|0.24537|
80|90|100.000|103.842|208.117|0.25000|0.24537|
Minimum51.460103.841
MAWP:
51.460psig,limitedby:
EllipticalHead.
InternalPressureCalculationResults:
ASMECode,SectionVIII,Division1,2010,2011a
EllipticalHeadFrom10To20SA-51670,UCS-66Crv.Bat200F
MaterialUNSNumber:
K02700
RequiredThicknessduetoInternalPressure[tr]:
=(P*D*Kcor)/(2*S*E-0.2*P)Appendix1-4(c)
=(100.000*96.2500*0.997)/(2*20000.00*1.00-0.2*100.000)
=0.2399+0.1250=0.3649in.
Max.AllowableWorkingPressureatgivenThickness,corroded[MAWP]:
=(2*S*E*t)/(Kcor*D+0.2*t)perAppendix1-4(c)
=(2*20000.00*1.00*0.1250)/(0.997*96.2500+0.2*0.1250)
=51.460psig
MaximumAllowablePressure,NewandCold[MAPNC]:
=(2*S*E*t)/(K*D+0.2*t)perAppendix1-4(c)
=(2*20000.00*1.00*0.2500)/(1.000*96.0000+0.2*0.2500)
=104.112psig
Actualstressatgivenpressureandthickness,corroded[Sact]:
=(P*(Kcor*D+0.2*t))/(2*E*t)
=(100.000*(0.997*96.2500+0.2*0.1250))/(2*1.00*0.1250)
=38377.184psi
StraightFlangeRequiredThickness:
=(P*R)/(S*E-0.6*P)+cperUG-27(c)
(1)
=(100.000*48.1250)/(20000.00*1.00-0.6*100.000)+0.125
=0.366in.
StraightFlangeMaximumAllowableWorkingPressure:
=(S*E*t)/(R+0.6*t)perUG-27(c)
(1)
=(20000.00*1.00*0.1250)/(48.1250+0.6*0.1250)
=51.867psig
FactorK,corrodedcondition[Kcor]:
=(2+(InsideDiameter/(2*InsideHeadDepth))2)/6
=(2+(96.250/(2*24.125))2)/6
=0.996550
PercentElong.perUCS-79,VIII-1-01-57(75*tnom/Rf)*(1-Rf/Ro)1.140%
MDMTCalculationsintheKnucklePortion:
Govrn.thk,tg=0.250,tr=0.240,c=0.1250in.,E*=1.00
StressRatio=tr*(E*)/(tg-c)=1.000,Temp.Reduction=0F
MinMetalTemp.w/oimpactperUCS-66-20F
MDMTCalculationsintheHeadStraightFlange:
Govrn.thk,tg=0.250,tr=0.241,c=0.1250in.,E*=1.00
StressRatio=tr*(E*)/(tg-c)=1.000,Temp.Reduction=0F
MinMetalTemp.w/oimpactperUCS-66-20F
CylindricalShellFrom20To30SA-51670,UCS-66Crv.Bat200F
MaterialUNSNumber:
K02700
RequiredThicknessduetoInternalPressure[tr]:
=(P*R)/(S*E-0.6*P)perUG-27(c)
(1)
=(100.000*48.1250)/(20000.00*1.00-0.6*100.000)
=0.2413+0.1250=0.3663in.
Max.AllowableWorkingPressureatgivenThickness,corroded[MAWP]:
=(S*E*t)/(R+0.6*t)perUG-27(c)
(1)
=(20000.00*1.00*0.1250)/(48.1250+0.6*0.1250)
=51.867psig
MaximumAllowablePressure,NewandCold[MAPNC]:
=(S*E*t)/(R+0.6*t)perUG-27(c)
(1)
=(20000.00*1.00*0.2500)/(48.0000+0.6*0.2500)
=103.842psig
Actualstressatgivenpressureandthickness,corroded[Sact]:
=(P*(R+0.6*t))/(E*t)
=(100.000*(48.1250+0.6*0.1250))/(1.00*0.1250)
=38560.000psi
PercentElongationperUCS-79(50*tnom/Rf)*(1-Rf/Ro)0.260%
MinimumDesignMetalTemperatureResults:
Govrn.thk,tg=0.250,tr=0.241,c=0.1250in.,E*=1.00
StressRatio=tr*(E*)/(tg-c)=1.000,Temp.Reduction=0F
MinMetalTemp.w/oimpactperUCS-66-20F
EllipticalHeadFrom30To40SA-51670,UCS-66Crv.Bat200F
MaterialUNSNumber:
K02700
RequiredThicknessduetoInternalPressure[tr]:
=(P*D*Kcor)/(2*S*E-0.2*P)Appendix1-4(c)
=(100.000*96.2500*0.997)/(2*20000.00*1.00-0.2*100.000)
=0.2399+0.1250=0.3649in.
Max.AllowableWorkingPressureatgivenThickness,corroded[MAWP]:
=(2*S*E*t)/(Kcor*D+0.2*t)perAppendix1-4(c)
=(2*20000.00*1.00*0.1250)/(0.997*96.2500+0.2*0.1250)
=51.460psig
MaximumAllowablePressure,NewandCold[MAPNC]:
=(2*S*E*t)/(K*D+0.2*t)perAppendix1-4(c)
=(2*20000.00*1.00*0.2500)/(1.000*96.0000+0.2*0.2500)
=104.112psig
Actualstressatgivenpressureandthickness,corroded[Sact]:
=(P*(Kcor*D+0.2*t))/(2*E*t)
=(100.000*(0.997*96.2500+0.2*0.1250))/(2*1.00*0.1250)
=38377.184psi
StraightFlangeRequiredThickness:
=(P*R)/(S*E-0.6*P)+cperUG-27(c)
(1)
=(100.000*48.1250)/(20000.00*1.00-0.6*100.000)+0.125
=0.366in.
StraightFlangeMaximumAllowableWorkingPressure:
=(S*E*t)/(R+0.6*t)perUG-27(c)
(1)
=(20000.00*1.00*0.1250)/(48.1250+0.6*0.1250)
=51.867psig
FactorK,corrodedcondition[Kcor]:
=(2+(InsideDiameter/(2*InsideHeadDepth))2)/6
=(2+(96.250/(2*24.125))2)/6
=0.996550
PercentElong.perUCS-79,VIII-1-01-57(75*tnom/Rf)*(1-Rf/Ro)1.140%
MDMTCalculationsintheKnucklePortion:
Govrn.thk,tg=0.250,tr=0.240,c=0.1250in.,E*=1.00
StressRatio=tr*(E*)/(tg-c)=1.000,Temp.Reduction=0F
MinMetalTemp.w/oimpactperUCS-66-20F
MDMTCalculationsintheHeadStraightFlange:
Govrn.thk,tg=0.250,tr=0.241,c=0.1250in.,E*=1.00
StressRatio=tr*(E*)/(tg-c)=1.000,Temp.Reduction=0F
MinMetalTemp.w/oimpactperUCS-66-20F
CylindricalShellFrom50To60SA-51670,UCS-66Crv.Bat200F
MaterialUNSNumber:
K02700
Max.AllowableWorkingPressureatgivenThickness,corroded[MAWP]:
=(S*E*t)/(R+0.6*t)perUG-27(c)
(1)
=(20000.00*1.00*0.1250)/(48.1250+0.6*0.1250)
=51.867psig
MaximumAllowablePressure,NewandCold[MAPNC]:
=(S*E*t)/(R+0.6*t)perUG-27(c)
(1)
=(20000.00*1.00*0.2500)/(48.0000+0.6*0.2500)
=103.842psig
PercentElongationperUCS-79(50*tnom/Rf)*(1-Rf/Ro)0.260%
MinimumDesignMetalTemperatureResults:
Govrn.thk,tg=0.250,tr=0.124,c=0.1250in.,E*=1.00
StressRatio=tr*(E*)/(tg-c)=0.992,Temp.Reduction=1F
MinMetalTemp.w/oimpactperUCS-66-20F
MinMetalTemp.atRequiredthickness(UCS66.1)-21F
EllipticalHeadFrom60To70SA-51670,UCS-66Crv.Bat200F
MaterialUNSNumber:
K02700
RequiredThicknessduetoInternalPressure[tr]:
=(P*D*Kcor)/(2*S*E-0.2*P)Appendix1-4(c)
=(100.000*96.2500*0.997)/(2*20000.00*1.00-0.2*100.000)
=0.2399+0.1250=0.3649in.
Max.AllowableWorkingPressureatgivenThickness,corroded[MAWP]:
=(2*S*E*t)/(Kcor*D+0.2*t)perAppendix1-4(c)
=(2*20000.00*1.00*0.1250)/(0.997*96.2500+0.2*0.1250)
=51.460psig
MaximumAllowablePressure,NewandCold[MAPNC]:
=(2*S*E*t)/(K*D+0.2*t)perAppendix1-4(c)
=(2*20000.00*1.00*0.2500)/(1.000*96.0000+0.2*0.2500)
=104.112psig
Actualstressatgivenpressureandthickness,corroded[Sact]:
=(P*(Kcor*D+0.2*t))/(2*E*t)
=(100.000*(0.997*96.2500+0.2*0.1250))/(2*1.00*0.1250)
=38377.184psi
StraightFlangeRequiredThickness:
=(P*R)/(S*E-0.6*P)+cperUG-27(c)
(1)
=(100.000*48.1250)/(20000.00*1.00-0.6*100.000)+0.125
=0.366in.
StraightFlangeMaximumAllowableWorkingPressure:
=(S*E*t)/(R+0.6*t)perUG-27(c)
(1)
=(20000.00*1.00*0.1250)/(48.1250+0.6*0.1250)
=51.867psig
FactorK,corrodedcondition[Kcor]:
=(2+(InsideDiameter/(2*InsideHeadDepth))2)/6
=(2+(96.250/(2*24.125))2)/6
=0.996550
PercentElong.perUCS-79,VIII-1-01-57(75*tnom/Rf)*(1-Rf/Ro)1.140%
MDMTCalculationsintheKnucklePortion:
Govrn.thk,tg=0.250,tr=0.240,c=0.1250in.,E*=1.00
StressRatio=tr*(E*)/(tg-c)=1.000,Temp.Reduction=0F
MinMetalTemp.w/oimpactperUCS-66-20F
MDMTCalculationsintheHeadStraightFlange:
Govrn.thk,tg=0.250,tr=0.241,c=0.1250in.,E*=1.00
StressRatio=tr*(E*)/(tg-c)=1.000,Temp.Reduction=0F
MinMetalTemp.w/oimpactperUCS-66-20F
SphericalHeadFrom70To80SA-51670,UCS-66Crv.Bat200F
MaterialUNSNumber:
K02700
RequiredThicknessduetoInternalPressure[tr]:
=(P*R)/(2*S*E-0.2*P)perUG-27(d)
=(100.000*48.1250)/(2*20000.00*1.00-0.2*100.000)
=0.1204+0.1250=0.2454in.
Max.AllowableWorkingPressureatgivenThickness,corroded[MAWP]:
=(2*S*E*t)/(R+0.2*t)perUG-27(d)
=(2*20000.00*1.00*0.1250)/(48.1250+0.2*0.1250)
=103.842psig
MaximumAllowablePressure,NewandCold[MAPNC]:
=(2*S*E*t)/(R+0.2*t)perUG-27(d)
=(2*20000.00*1.00*0.2500)/(48.0000+0.2*0.2500)
=208.117psig
Actualstressatgivenpressureandthickness,corroded[Sact]:
=(P*(R+0.2*t))/(2*E*t)
=(100.000*(48.1250+0.2*0.1250))/(2*1.00*0.1250)
=19260.000psi
PercentElong.perUCS-79,VIII-1-01-57(75*tnom/Rf)*(1-Rf/Ro)0.390%
MDMTCalculationsintheSphericalPortion:
Govrn.thk,tg=0.250,tr=0.120,c=0.1250in.,E*=1.00
StressRatio=tr*(E*)/(tg-c)=0.963,Temp.Reduction=4F
MinMetalTemp.w/oimpactperUCS-66-20F
Min
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