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1
2 Pressure Vessel Engineering Ltd.3 Finite Element Analysis ASME Code Calculations4 Canadian Vessel Registration Vessel Modeling and Drafting5
6 Page 1 of 17 F&D Head Description
8 Dimensions:9 24.00010 24.00011 1.44012 0.18813 0.15914 0.01015 2.000
16 Material and Conditions:17 SA-240 304 Material 18 20,000
19 0.8520 50.0
21 Calculated Properties:22 note 1:Suggested radius L per UG-32(j) 24.00 Approx. head weight based on steel, lbs = 38.5323 note 2:Suggested radius IKR per UG-32(j) 1.440 Approx. head volume including skirt, cuft = 1.1224 note 3:Suggested thickness after forming 0.1555
25 Variables:26 0.159-0.01 = 0.14927 24-2*0.149 = 23.70128 L/IKR 24/1.44 = 16.66729 0.25*(3+sqrt(L/IKR)) 0.25*(3+SQRT(24/1.44)) = 1.77130 24+0.188 = 24.188
31
32 tf/L 0.159/24 = 0.00733 if(AND(0.0005=<App1-4(f),App1-4(f)<0.002),"Calculation Required","Calculation not required")
34 App. 1-4(f) Calculation Not Required35
36 (50*24*1.771)/(2*20000*0.85-0.2*50)+0.01 = 0.07337 Treq<=tf 0.073<=0.159 = Acceptable
38
39
40 (2*20000*0.85*0.149)/(24*1.771+0.2*0.149) = 119.441 Pmax >= P 119.4 >= 50 = Acceptable
42 App. 1-4(f) calculation is not included on this sheet
43 Nozzles may be subject to a smaller required thickness depending on location in the head, only the knuckle required
44 thickness is calculated on this sheet
45 Heads may be subject to stress relief if large elongation occurs - UCS-79(d), UNF-79(d), UG-37(a)(1)
46 The UG-16(b) minimum thickness requirement is not checked.
47 This sheet cannot be used to check for allowable exterior pressure loads.
48 Use the Weld Efficiency program to calculate E
49 This sheet is for educational use only - use at your own risk.
50 Pressure Vessel Engineering Ltd.51 120 Randall Drive, Suite B52 Waterloo, Ontario, Canada, N2V 1C653
F&D Head Design Tool ver E4.00
Do [in] - outside diameter of head L [in] - inside crown radius (note 1) IKR [in] - inside knuckle radius (note 2) tb [in] - thickness before forming tf [in] - thickness after forming (note 3) Corr [in] - corrosion allowance Skirt [in] - straight skirt length
S [psi] - allowable stress
E - longitudinal efficiency P [psi] - interior pressure
nt [in] = tf-Corr ~~ thickness with corrosion allowance removed
D [in] = Do-2*nt ~~ ID with corrosion allowance removed
L/r =M =
Ro [in] = L+tb
Required Thickness: App. 1-4(a), App. 1-4(d)
App1-4(f) =App1-4(f)Calc =
Treq [in] = (P*L*M)/(2*S*E-0.2*P)+Corr ~~ required minimum thickness
CheckTreq =
Maximum Pressure: App. 1-4(a), App. 1-4(d)
Pmax [psi] = (2*S*E*nt)/(L*M+0.2*nt) ~~ maximum allowed design pressure
CheckPMax =
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