Clayton Armstrong 2011-02-22 GSK Aranda SP - steam&condensat

STEAM AND CONDENSATE AUDIT

Project N°30275

Date: 04/02/2011

GSK MANUFACTURING Aranda, Spain

Page 32 of 45

Established by E. Morin

To the attention of Ms. Beatriz Herrero-Gonzalo

- GLATT 6115-6102-6106, Eagle = 4 barg

Steam pressure levels should be adjusted considering these parameters:

Hot air temperature needed

The lower the steam pressure, the higher the latent heat which is transferred in

the coil

The lower the pressure, the higher the specific volume (attention to be paid to

steam pipe size)

If steam pressure is less than condensate return back-pressure, you may cause

condensate accumulation inside the coil.

-Linea AVAMYS (2 double jacketed reactors)

We observed that there is only one steam trap for the 2 condensate outlets of reactors.

This configuration can only work if the reactors do not run in the same time; otherwise you may have

troubles to evacuate condensate from one of the reactors to the return line.

7.4 Condensate return

Condensate from Tunnel 1 area is collected and sent to Tunnel 2 area with an old pumping-trap.

The condensate header and the pump have been relocated recently and the steam trap on the

motive steam line has not been re-installed. We recommend you to insert the steam trap again to

prevent from rapid erosion and steam leaks on the check valve at the pump steam inlet.

In a general way, there is no high back pressure in condensate return lines as you use 3

atmospheric condensate pumps. In Tunnel 1 and Eagle they are located at the same level or under

steam users. Thus condensate back-pressure is close to 0.

However in tunnel 1, some steam users located on the first floor are “under” the condensate pump

installed on the second floor. Therefore these steam users may be more sensitive to condensate

return back-pressure.