nozzle repad design spreadsheets
DESCRIPTION
radial NozzleTRANSCRIPT
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 =
1
2
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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