8.4.3   Tubeplate thickness


The tubeplate thickness is found from BS5500 [11], using the suggested working form for U-tube tube-sheet design on Page 3/96.

The calculation is very similar to that shown on Fig 3.49, the only difference being that allowance is made for the stiffening effect of the tubes where they pass through the tubeplate. Using this method of calculation, a typical 660 MW LP heater tubeplate with a tube bundle diameter of 1.4 m has a thickness of about 200 mm.


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