Process Equipment and Plant Design
Any shell opening greater than 5 cms for a storage tank must be reinforced for reason of

Making the joint leak proof
Preventing the local overstressing of the shell around the opening
None of these
Reduction of discontinuity in shape at the junction

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Process Equipment and Plant Design
The centre to centre distance between two consecutive baffles in a shell and tube heat exchanger is called the baffle pitch or baffle spacing, which is more than 1/5th the I.D. of the shell. Which of the following is not a function of the baffles?

To provide support to the tube bundle
To increase the residence time of shell side fluid
To reduce the induced vibration in the tubes
To increase the tube side heat transfer co-efficient by inducing turbulence

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