Responses:
1) In review, don't see a problem with ERW, will confirm week of 30 April.
2) Okay.
3) Okay.
4) Seal Failure would still allow barrier fluid to product, oil collection pot is acceptable.  Thermosyphon pot is required for the 8m² unit.  Please change material of upper seal assembly to 316SS per uploaded drawing with comments.
5) Will provide more comments on 30 April.