Internal Pressure Calculations.docx

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Internal Pressure Calculations.docx

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Internal Pressure Calculations.docx

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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