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In a reaction vessel, top and bottom fanged dished end of a head are to be designed The data grven is: Internal diameteras 2500m. Crown
In a reaction vessel, top and bottom fanged dished end of a head are to be designed The data grven is: Internal diameteras 2500m. Crown radius =2500mm; Knuckle radius: 130mm; Poisson's ratio =0.3. Modulus of elasbciy =2105Nmm. Internal Design pressure =0.75N. Allowable stress =98N/mm2; Joint efficiency =85%; Corrosion allowance =1.5mm, Exiernal design pressure=0.5Nimm? Use. Estimate the thickness of the plates in mm of (i) Top head (Internal design pressure only) (ii) Bottom dished end assuming internal design pressure=1.67x external design pressure (iii) Bottom dished end assuming buckling pressure is twice that of design extecnal pressure (take factor of safety, a=4) [121,1]
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