Ellipsolidal head calculations of years gone by

[POPPASMURFF1942]

Interesting issue is that while performing calculations on an ellipsoidal head on a vessel fabricated in 1947 using todays formulas it won't work according to ASME section VIII.

Is the formula used in 1947 different that that used today? I noted that the MAWP is based on a percentage of burst strength,

 

[chicopee]

You should use the ASME code for the year of fabrication which can be either 1947,1946, 1945, etc...You should not use today's code for calculation checks. Their will be a cost to purchase that code, however, before you purchase the code, get a copy, at an additional nominal cost, of the manufacturer's data sheet from the National Board. The manufacturer's data sheet will have information to assist you in your quest.