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

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

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Process Equipment and Plant Design
Pick out the wrong statement pertaining to the design of the distillation column.

The purpose of the slot is to disperse the gas into the liquid in the form of small bubbles
Generally, a skirt clerance of 0.5" to 1.5' is recommended to prevent plugging of the slots by residue build up
None of these
If sufficient slot area is not provided, the gas may pass through the skirt clearance

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