The initial comments on main P&ID
1.Total control logic of the ‘SPDU’ supplying with interlocking system to be provide for the review. In this following are suggestion need to be check for the incorporation as per the process required
a.Unless Hot oil circulation for the Z102 unit is on Feed pumpGPU101 should not start.
b.In SPDU-1 unit for the distillate water collection tank provide 2 no. of alarm ‘H’ and ‘HH’ for the level for operational action to be taken.
c.In Z-101 unit in vacuum catch pot unless brine circulation start Feed pump to  Unit GPU-102 should not start.
2.Sampling arrangement to be provide on the pump discharge of GPU-102,103  with double valve arrangement system
3We have already supplied you with our building Plan, please confirm the height provided above is sufficient for removal of SPDU agitator . This is to make sure the availability of space.
5.Elevation showing in the drawing is 4.78mt where as VCPPL height is 5.0 mts. ‘TF’ to increase the height as 5.0 mt to match the floor height.
6.Are the  gear pumps provided of same specification? What is the make and capacity? Is their any need of spares' requirement
7. provision in the condensate drain vessels to either have a bigger nozzel or have conical bottom for ease of oily condensate draining
8.What are the interlocks provided in the system for filure of POWER,Failure of hot oil and chilled brine system etc.
9. The hot oil system will be designed for temperature of 250`C and not 280`C as indicated
10. How important or critical is hot water temprature?
11.What is the pump internal circulation arrangment showen for each of the gear pump is not very clear,Gear pumps are normally having PRV either going back to suction or back to the tank.
12.We have been writing for quite some time to provide Heat exchanger in the outlet line of SPDU concentrate but no reply,we also want two valves to go seperately to two different tanks.