Dear sir, please find below clarifications over comments posted by you on GADs.
1) SORF flanges requirement:- We have provided the same.
2) Insulation cleat requirement:-Insulation cleat is required only when the diameter exceeds 400 mm. In our case it is within limits, hence we have not provided insulation cleats.
3) Design pressure on shell side:- We have changed design pressure to 6 kg/cm2 (g).
4) Tube side conditions (operating & design conditions for separators also):- As the system is at atmospheric pressure, hence the operating & design conditions taken by us are ok.