Pressure vessels calculation program

Pressure vessels calculation program
This is part of the spreadsheet developed by us that we used in our beginnings for the design and calculation of this equipment. Today we do it with internationally recognized programs.
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1 - Constructive dates and vessel sketch

1.1Connections:

TAG	Description	Dn ["]	Sch	Ubicac
1	Product inlet	2	SCH40	Head1
2	Oulet	4	SCH40	Head2
3	Temp. indicator	0,75	SCH80	Head1
4	Pressure gauge	0,5	SCH80	Head2
5	Manhole	24	SCH20	Shell

2 - Design data

		P, design pressure, [psi]	400
		Td, design Temperature, [°F]	700
		Material	SA53,A
		Sd, allowable stress, [psi]	11700		From ASME II Sec. D
		Sa, ambient allowable stress, [psi]	12000		From ASME II Sec. D

2.1 - Minimun design temperature

	The following ones are the minimum design temperatures accepted for
	the Code (for which it is not necessary to carry out impact test).
	They are obtained with the calculated thickness values and the calculate
	stress.

		For the shell				T [in]	Stress [psi]
		Min temp.at Sa (Fig UCS-66), [° F]		-20		0,875
		Min. temp. at P(Fig UCS-66.1), [° F]		-20			10744

		First head
		Min temp. at Sa, [° F]		-20		0,875
		Min temp. at P, [° F]		-20			10509

		Second head
		Min temp. at Sa, [° F]		-20		0,875
		Min temp. at P, [° F]		-20			10509

3 - Shell calculation

			E, Joint efficiency= 0,85
			T', suggested thickness, [in.]= 0,875
			T, adopted thickness, [in.]= 0,875

	3.1 - Thickness calculation

		=(P(D/2+CA)/(SE-0.6*P)) por UG-27 (c)(1)
		=(400,0(36,000/2+0,063)/(117000,85-0.6*400,0))

		Required thickness by design pressure, [in] = 0,7445
		Required thickness with corrosion, [in] = 0,8070

	3.2 - M.A.W.P. calculation:

		=(SE(T-CA))/((D/2+CA)+0.6*(T-CA)) por UG-27 (c)(1)
		=(117000,85(0,875-0,063))/((36,000/2+0,063)+0.6*(0,875-0,063))
		M.A.W.P, corrosion condition, [psi] = 435,50
		Input design pressure, [psi] = 400,00

		M.A.W.P., new and cold condition
		=(SAET)/((D/2)+0.6*(T)) por UG-27 (c)(1)
		=(120000,850,875)/((36,000/2)+0.6*(0,875))
		M.A.W.P., new and cold (70 °F), [psi] = 481,70
		Hydrotest Pressure Based on MAWP, per UG-99 (b), [psi] = 670,00
		Stress at corroded thickness and design pressure, [psi] = 10744

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