This refers to the G.A. Drawings and mechanical design calculations sent by us and the comments received from SLEI on the same.  Our confirmation on the comments are as follows :-

1.	The Name plate shall be as per SLEI standard name plate drawing.

2.	LLE is designed for full vacuum inside.  Hence in the design calculations, external design pressure (equivalent to full vacuum inside) becomes the governing factor for the thickness.

3.	As per our final offer ref: TFS/07-049/Libra/O-4 dated 4/7/2007 which is a part of the Purchase order, all the nozzle pipes will be welded and as confirmed earlier we will be giving 10% radiography for all the welded joints. (our letter ref: TFS/07-59/L-16 dated 14/8/2007).

4.	We use 1.5 mm thick gasket regularly for all our equipment having full vacuum and we never faced problems in getting the required vacuum.  However, 1.5 mm thick gasket is provided as per ASME code and the Y/M ratio of the same is been used in all the calculations done. Hence 3mm thick gasket would not be required.

5.	As per your requirement, we have increased quantity of bolts as per TEMA Table D-5. 

6.	Please consider rigidity index under sub-heading “Flange rigidity based on given thicknessâ€. Do not consider rigidity index under sub-heading “Flange rigidity based on required thicknessâ€.

The required thickness is minimum thickness calculated considering all stresses &
The given thickness is actual thickness used for the flange. All rigidity indexes are below 1.   Hence flanges meet the requirement of rigidity.

7.	As per the final offer ref: TFS/07-049/Libra/O-4 dated 4/7/2007 which is a part of the Purchase order, mechanical design calculations of only the shell and body flanges of LLE and settlers will be provided and hence the calculations of the supports of LLE and settlers will not be provided.

8.	The bottom saddle support is of fix type and not of sliding type and hence the sliding details of the same are not applicable.

9.	For the rotor removal arrangement, we have already provided height required for the removal of the rotor.

10.	The B.O.M will not be provided. 
