nael:

You may get faster results by doing a search on what is already posted. For example, salahbouz just started a thread leading to a good collection of videos covering activities that are performed in refineries.

There are many books, some of which you may have downloaded already, which also apply to refineries.

Finally, I´ll tell you something I´ve done for a long time. This is googling a lot which has provided me with good information, outside of this forum. Do not constrain yourself to this Forum.

Regards