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An excellent web based tool for Ellipsoidal Head thickness calculation under internal pressure. It also gives allowable Stress of material at a desired design temperature. This and many other tool for Pressure Vessel design as per ASME Section VIII Div. 1 would be useful for Static Equipment Engineer.
Ellipsoidal Head thickness calculation is based on para UG-32(d) of ASME Section VIII Division 1 2011 edition code book.
Where in Ellipsoidal Head thickness is given by:t = P * D/(2SE – 0.2P)
This tool also calculate head thickness on OD basis as per Appendix 1-4(c) of ASME Section VIII Div. 1, which ist = P * Do*K/(2SE + 2P(K-0.1))