The function of manholes provided in the shell of a distillation column is to __________________?

A. All A., B. and C.

B. Give access to the individual trays for cleaning, maintenance and installation

C. Guard against foaming & entrainment by dumping antifoaming agent through it

D. Keep a check on the liquid gradient over the plate by direct visual observation

Found an error? Read our corrections policy and submit a sourced correction below. You can also share a useful explanation in your own words.

Discuss the answer or suggest a sourced correction
Thank you for contributing.
Your comment was submitted and will appear after editorial review.

Your email is used only for moderation and is never displayed. Spam, copied material and fabricated endorsements are rejected.