Full working is appreciated, thanks The cover plate on a reaction vessel is secu
ID: 1860363 • Letter: F
Question
Full working is appreciated, thanks
The cover plate on a reaction vessel is secured by a number of grade 5.8 bolts with rolled threads. The cover plate joint material is three times stiffer than the bolt stiffness (kc = 3kb). There is sufficient space on the flange of the cover plate for a large number of bolt heads. The cover plate seals a cylindrical section of the vessel with a bore diameter of 200 mm. Company practice is that a factor of safety of 2.2 be used in all pressure vessel calculations. The pressure in the reaction vessel cycles between 0 to 8 MPa, and usage patterns of the reaction vessel dictate that it be designed for "infinite life". Explain what this term might actually mean in this situation. Choose a bolt size from the available sizes of M12, M14 or M16 and give reasons for your answer. Determine an appropriate initial tightness for the bolts, and justify your answer. Determine the number of bolts required to prevent fatigue failure.Explanation / Answer
the maximum pressure is P = 8 MPa = 8 x 10^6 Pa
diameter of bore d = 200 mm = 200 x 10^-3 m
the force is
F = P x A
where A = pi x (d^2/4)
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