nozzle repad design spreadsheets

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1 2 Pressure Vessel Engineering Ltd. 3 Finite Element Analysis ASME Code Calculations 4 Canadian Vessel Registration Vessel Modeling and Drafting 5 6 Page 1 of 2 7 Nozzle Description 8 Shell Inputs: 9 SA-240 304 Material 10 20,000 11 1.00 12 24.000 13 0.204 14 0.015 15 0.015 16 Nozzle Inputs: 17 SA-312 304 Material 18 20,000 19 1.00 20 4.000 21 0.160 22 1.000 23 1.000 24 0.015 25 12.5% 26 50.0 27 Reinforcement: 28 SA-240 304 Material 29 20,000 30 0.250 31 6.000 32 0.200 33 0.200 34 0.200 35 0.250 36 Variables: 37 Nwall*UTP 0.16*0.1 = 0.020 38 Do/2 - (Nwall-nca) + UT 4/2 - (0.16-0.015) + 0.02 = 1.875 39 Nwall-2*nca 0.16-2*0.015 = 0.130 40 MIN(Ip-sca,2.5*nt,2.5*ti) MIN(1-0.015,2.5*0.204,2.5*0.13) = 0.325 41 Nwall-nca 0.16-0.015 = 0.145 42 Do-2*tn 4-2*0.145 = 3.710 43 44 45 (50*1.875)/(20000*1 - 0.6*50)+0.015 = 0.020 46 TreqN <= Nwall 0.02 <= 0.16 = Acceptable 47 Minimum thickness per UG-45 [in] = Acceptable 0.078 Nozzle and Repad Design Tool ver E4.01 Sv [psi] - allowable stress E1 - efficiency of shell at nozzle Ds [in] - inside diameter of shell nt [in] - nominal shell wall thickness Treq [in] - required shell wall thickness sca [in] - shell corrosion allowance Sn [psi] - allowable stress E - nozzle efficiency Do [in] - outside diameter of nozzle Nwall [in] - nominal wall thickness of nozzle Lp [in] - exterior projection of nozzle Ip [in] - interior projection of nozzle nca [in] - nozzle corrosion allowance UTP [%] - undertolerance allowance Pn [psi] - interior pressure Sp [psi] - allowable stress of repad te [in] - repad thickness Dp [in] - outside diameter Leg41 [in] - fillet size Leg42 [in] - fillet size Leg43 [in] - fillet size LegG [in] - depth of groove UT [in] = Rn [in] = ti [in] = h [in] = tn [in] = d [in] = Required Thickness: UG-27(c)(1,2) TreqN [in] = (Pn*Rn)/(Sn*E - 0.6*Pn)+nca ~~ required minimum thickness CheckTreqN =

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Page 1: Nozzle Repad Design Spreadsheets

1

2 Pressure Vessel Engineering Ltd.3 Finite Element Analysis ASME Code Calculations4 Canadian Vessel Registration Vessel Modeling and Drafting5

6 Page 1 of 27 Nozzle Description

8 Shell Inputs:9 SA-240 304 Material 10 20,00011 1.00

12 24.00013 0.20414 0.01515 0.015

16 Nozzle Inputs:17 SA-312 304 Material 18 20,00019 1.00

20 4.00021 0.16022 1.00023 1.00024 0.01525 12.5%26 50.0

27 Reinforcement:28 SA-240 304 Material 29 20,00030 0.25031 6.00032 0.20033 0.20034 0.20035 0.250

36 Variables:37 Nwall*UTP 0.16*0.1 = 0.02038 Do/2 - (Nwall-nca) + UT 4/2 - (0.16-0.015) + 0.02 = 1.87539 Nwall-2*nca 0.16-2*0.015 = 0.13040 MIN(Ip-sca,2.5*nt,2.5*ti) MIN(1-0.015,2.5*0.204,2.5*0.13) = 0.32541 Nwall-nca 0.16-0.015 = 0.14542 Do-2*tn 4-2*0.145 = 3.710

43

44

45 (50*1.875)/(20000*1 - 0.6*50)+0.015 = 0.02046 TreqN <= Nwall 0.02 <= 0.16 = Acceptable

47 Minimum thickness per UG-45 [in] = Acceptable 0.078

Nozzle and Repad Design Tool ver E4.01

Sv [psi] - allowable stress E1 - efficiency of shell at nozzle

Ds [in] - inside diameter of shell nt [in] - nominal shell wall thickness Treq [in] - required shell wall thickness sca [in] - shell corrosion allowance

Sn [psi] - allowable stress E - nozzle efficiency

Do [in] - outside diameter of nozzle Nwall [in] - nominal wall thickness of nozzle Lp [in] - exterior projection of nozzle Ip [in] - interior projection of nozzle nca [in] - nozzle corrosion allowance UTP [%] - undertolerance allowance Pn [psi] - interior pressure

Sp [psi] - allowable stress of repad te [in] - repad thickness Dp [in] - outside diameter Leg41 [in] - fillet size Leg42 [in] - fillet size Leg43 [in] - fillet size LegG [in] - depth of groove

UT [in] = Rn [in] =

ti [in] = h [in] =

tn [in] = d [in] =

Required Thickness: UG-27(c)(1,2)

TreqN [in] = (Pn*Rn)/(Sn*E - 0.6*Pn)+nca ~~ required minimum thickness

CheckTreqN =

K13
Typically E1=1
K16
Use nt from the corresponding head or pipe and shell program
K17
Use one of the following based on nozzle location: nozzle in pipe/shell - See Treq from pipe and shell program nozzle in head - See Treq from corresponding head program
K30
Typical -12.5% for pipe -0.0% for rolled plates and machined elements
Page 2: Nozzle Repad Design Spreadsheets

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3 1*3.71*0.015*1+2*0.145*0.015*1*(1-1) = 0.0564 max(d, 2*(nt+tn)) * (E1*nt-1*Treq)-2*tn*(E1*nt-1*Treq)*(1-fr1)5 MAX(3.71, 2*(0.204+0.145)) * (1*0.204-1*0.015)-2*0.145*(1*0.204-1*0.015)*(1-1) = 0.7016 min((tn-trnR)*fr2*min(5*nt,2*Lp),(tn-trnR)*(Min(2.5*tn+te,2*Lp)*fr2*2))7 MIN((0.145-0.005)*1*MIN(5*0.204,2*1),(0.145-0.005)*(MIN(2.5*0.145+0.25,2*1)*1*2)) = 0.1438 Min(5*nt*ti*fr2,5*ti*ti*fr2,2*h*ti*fr2)9 MIN(5*0.204*0.13*1,5*0.13*0.13*1,2*0.325*0.13*1) = 0.08510 (Dp-d-2*tn)*te*fr4 (6-3.71-2*0.145)*0.25*1 = 0.50011 Leg41^2*fr3 0.2^2*1 = 0.04012 Leg42^2*fr4 0.2^2*1 = 0.04013 (Leg43-nca)^2*fr2 (0.2-0.015)^2*1 = 0.03414

15 0.701+0.143+0.085+0.5+0.04+0.04+0.034 = 1.54316 1.543 >= 0.056 = Acceptable

17 The UG-16(b) minimum thickness requirement has not been taken into consideration here.

18 The required weld size is not checked on this sheet

19 This sheet cannot be used to check for allowable exterior pressure loads.

20 This sheet is for educational use only - use at your own risk.

21 Pressure Vessel Engineering Ltd.22 120 Randall Drive, Suite B23 Waterloo, Ontario, Canada, N2V 1C624

Area Replacement: Ar [in^2] = 1*d*Treq*1+2*tn*Treq*1*(1-fr1) ~~ required Area

A1 [in^2] =

A2 [in^2] =

A3 [in^2] =

A5 [in^2] = A41 [in^2] = A42 [in^2] = A43 [in^2] =

Aa [in^2] = A1+A2+A3+A5+A41+A42+A43 ~~ actual area

CheckA = Aa >= Ar ~~ check area replacement

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