If these are the so called "gland seal flushing" coolers, then I have thefolloeing to say;
Seal flushing is normally taken from dedicated system (or from pump discharge), returned and cooled in the above mentioned coolers and then diverted into seal system. What I'm familiar with is...
Sometimes, it is called exception items list. These exception items would fall under two classes;
1. Items that would impact plant commissioing therefore must be completed prior to start up, such as rotating equipment, instrumentation, etc. These normally require more attention.
2. Items...
From operating point of view, the hydrotreater (similar to any other high pressure system, e.g. hydrocracker)is pressured to acheivable recycle gas compressor discharge with Nitrogen, in your case 42 kg/cm2g range. However, during plant start up pressurizing is carried out slowly and gradually...
Further to the above, is soda ash nutrilazation done to ALL 300 series S.S. Waht about vessels made of C.S. but LINED or CLADDED internally with any of the 300 series S.S.
Regards ,,
"Specifying Steam Surface Condensers" is an article that was made by Elliot Spencer of Graham Mfg. Co. It gives insight to factors affecting design & selection of such condensers. I find it helpful.
Supporting the above responses, I have come myself across a similar bad practice. That is connecting some other stream line piping to the Relief Valve discharge line. This would also bring about the same effect.
