# v 2154 101 a 216 c_mechanical calculation (v 510, v 511)

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MECHANICAL CALCULATION SHEET

Project: NOEV LUBE OIL BLENDING PLANT

Job No.: AL-2499

Document No.: V-2154-101-A-216

Reference Drawing: V-2154-101-A-203_Rev.E & V-2154-101-A-207_Rev.B

Vessel Name: Multi Production Tank

Vessel Tag No.: V-510 & V-511

C5/27/13Issue for review / approvalL.D.TL.A.VL.N.BB5/10/13Issue for review / approvalL.D.TL.A.VL.N.BA4/9/13Issue for review / approvalL.D.TL.A.VL.N.BRevDateDescriptionPreparedCheckedApproval

IndexMECHANICAL CALCULATION SHEETINDEXPage1. Design Data22. Shell Thickness Calculation23. Bottom Head Thickness Calculation34. Top Head Thickness Calculation45. Auxiliary Stiffener Calculation56. Main Stiffener Calculation67. Weight Calculation Sheet78. Lug Support89. Nozzle Calculation1110. Welding1411. Wind Load Analysis1712. Seismic Analysis1813. Support Analysis for Wind/Seismic1914. Stresses in Shell by Wind/Seismic2115. Lifting Lug Calculation2216. Conclusion25

&"-,Italic"Project: NOEV LUBE OIL BLENDING PLANT&"-,Italic"Job No.: AL-2499&"-,Italic"Rev. No.: C

&"-,Italic"Page 1 of 25

Calculation sheet1. Design Data

Design Code : NoneService: Multi Production Tank(Atmospheric Tank)Design pressureMax. Internal pressure - (Full 3.79 meters of Water)P =0.372barg=0.0372MPa GExternal pressure0.0barg=0.0MPa GWorking pressure0.0barg=0.0MPa GDesign temperature105degrees CWorking temperature60 ~ 80degrees CCorrosion allowance0.0mmVessel inside diameter2400mm(O/D = 2412mm)Vessel length (Flat Head to T.L)2800mm

MaterialS : Maximum allowable stress valueShellSA-240 TP304 / 304L112MPaFlat Top HeadSA-240 TP304 / 304L112MPaBottom Cone HeadSA-240 TP304 / 304L112MPaNozzle NeckSA-312 TP304 / 304L115MPaSupportSA-240 TP304 / 304L112MPa

Nozzle Flange: ASME B16.5 StandardNozzleSizeFlange TypeClassNozzle NeckNozzle outside diameter, mmNozzle inside diameter, mmSCHTHK.N1A/N1BDN 50 (2")SO RF15080S5.5460.349.22N2DN 40 (1-1/2")SO RF15080S5.0848.338.14N3DN 50 (2")SO RF15080S5.5460.349.22N4DN 100 (4")SO RF15040S6.02114.3102.26N5DN 100 (4")SO RF15040S6.02114.3102.26N6DN 80 (3")SO RF15040S5.4988.977.92N7DN 100 (4")SO RF15040S6.02114.3102.26

2. Shell Thickness Calculation (Refer to ASME Section VIII, Division 1, UG-27)

2.1Minimum required thickness of shell exclusive corrosion allowance (t):Circumferential Stress (Longitudinal Joints)= 0.0372x1200.0=44.6=0.47mm112.0x 0.85-0.6 x0.037295.2

where:P : internal design pressure=0.0372MPaPASS

Shear StressShear=13.19MPaShear=Ps/(2(R-Rh)*T)Allowable=68MPaAllowable=0.4 x FySafety Factor=5.16=>PASS

Tensile StressFrom Section D3.2 of AISC, the distance used in calculations, across the hole, is the minimum of 4 times the platethickness at the pinhole or 0.8 times the hole diameter.Effective width=22.4mmPlate thickness=25mm

Tensile=42.39MPaTensile=Ps/(Effective width*plate thickness)Allowable=76.5MPaAllowable=0.45 Fy(AISC Section D3.2)Safety Factor=1.80=>PASS

Bending StressSection modulus Z=117600mm3Z=h2 x T / 6Area of lug base A=4200mm2A=h x T

Bending=24.63MPaBending=(Fz*c / Z) + (Fx / A)Allowable=102MPaAllowable=0.6 FySafety Factor=4.14=>PASS

Stress in Weld Joint

Weld type :T-Butt weld, Full Penetration

Critial weld length K=25mm(Assumed equal to the thickness of lug)Section modulus of weld Zw=235200mm3Zw=h2 x K / 3Area of weld Aw=8400mm2Aw=2 x K x h

Applied by force FzBending S1=12.3MPaBending S1=Fz*c/ZwShear S2=2.8MPaShear S2=Fz/AwCombined=12.63MPaCombined=(S12 + S22)0.5Allowable=102MPaAllowable=0.6 FySafety Factor=8.07=>PASS

Applied by force FxTensile S3=0.00MPaTensile S3=Fx/AwAllowable=102MPaAllowable=0.6 Fy=>PASS

15.2Check for = 85 degrees (Considering Tolerance 5 degrees)Angle=85.0degree

Considered a load factor of 2.0 applied to the structure gravity loads

Design Load P = 2x9.81xWe=47480.4NForceFz = 0.5 P =23740NFx = Fz / tg =2077N

Max tensile force in Wire RopePs = Fz / sin =23831N

Choose Shackle

Choose Shackle with SWL=4.7tonne

Stress in Lifting Lug

Bearing StressBearing=43.33MPaBearing=Ps/(T x D)Allowable=153MPaAllowable=0.9 x FySafety Factor=3.53=>PASS

Shear StressShear=13.24MPaShear=Ps/(2(R-Rh)*T)Allowable=68MPaAllowable=0.4 x FySafety Factor=5.14=>PASS

Tensile StressFrom Section D3.2 of AISC, the distance used in calculations, across the hole, is the minimum of 4 times the platethickness at the pinhole or 0.8 times the hole diameter.Effective width=22.4mmPlate thickness=25mm

Tensile=42.56MPaTensile=Ps/(Effective width*plate thickness)Allowable=76.5MPaAllowable=0.45 Fy(AISC Section D3.2)Safety Factor=1.80=>PASS

Bending StressSection modulus Z=117600mm3Z=h2 x T / 6Area of lug base A=4200mm2A=h x T

Bending=25.12MPaBending=(Fz*c / Z) + (Fx / A)Allowable=102MPaAllowable=0.6 FySafety Factor=4.06=>PASS

Stress in Weld Joint

Weld type :T-Butt weld, Full Penetration

Critial weld length K=25mm(Assumed equal to the thickness of lug)Section modulus of weld Zw=235200mm3Zw=h2 x K / 3Area of weld Aw=8400mm2Aw=2 x K x h

Applied by force FzBending S1=12.3MPaBending S1=Fz*c/ZwShear S2=2.8MPaShear S2=Fz/AwCombined=12.63MPaCombined=(S12 + S22)0.5Allowable=102MPaAllowable=0.6 FySafety Factor=8.07=>PASS

Applied by force FxTensile S3=0.25MPaTensile S3=Fx/AwAllowable=102MPaAllowable=0.6 FySafety Factor=412.52=>PASS

Choose Lug Configuration as shown above is satisfactory

16. ConclusionShell thickness:Thickness required:2.50mmThickness actual:6.0mm

Bottom Head thickness:Nominal Thickness required:8.00mm

Top Head thickness:Thickness actual:6.00mm

Auxiliary Stiffener size:50 x 8mm

Main Stiffener size:T-150x6 + 70x8mm(Refer to GA Drawing for more details)

Nozzle thickness:Shell Nozzle N2 DN40 (1-1/2")

Thickness required:2.50mmThickness actual:5.08mm(SCH 80S)

Flat Top Head Nozzle N1A, N1B, N3 DN50 (2")

Thickness required:5.54mmThickness actual:5.54mm(SCH 80S)

Flat Top Head Nozzle N6 DN80 (3")

Thickness required:5.49mmThickness actual:5.49mm(SCH 40S)

Flat Top Head Nozzle N5, N7 DN100 (4")

Thickness required:6.02mmThickness actual:6.02mm(SCH 40S)

Cone Bottom Head Nozzle N4 DN100 (4")

Thickness required:2.50mmThickness actual:6.02mm(SCH 40S)

&"-,Italic"Project: NOEV LUBE OIL BLENDING PLANT&"-,Italic"Job No.: AL-2499&"-,Italic"Rev. No.: C

&"-,Italic"Page &P of 25

50Lt = 8PP

Volume & WeightVOLUME

id254.56mmid0.25456mL =2.09m

Section Area =0.051m^2VOLUME =0.106m^33.756Cu. Feet

WEIGHTsectionor Lthickness(mm)Unit weight(kg)Q'tyWeight(kg)Shell2.099.27126.031126.0Head0.0616.007.35214.7Nozzle pipe0.085.540.58105.8Nozzle pipe0.165.541.2011.2Flange Slip-on2.301125.3Cap111.0pipe dn15 sch 1600.350.682510.7Support5210.0Total184.7

full water0.051106.371106.4291.0