Dear Abdelkader,

Based on past experiences, what I can say is that it all depends on the purpose of FEED. Anyway just to share with yu, currently I’m involved in a cogeneration project. For this project we’ve decided to split the implementation in various phases:
1) Feasibility Study (FS)
2) Basic Engineering Design (BED) = FEED
3) EPCC

Why we’re doing that? This is about managing project risks. Prior to the actual project implementation which do involve a lot of investment & resources, we proceed with FS first. Let say the initial project statement is to implement the cogeneration project to supplly power & steam to the refinery. This is the kind of statement given by the top management or board of directors. We, the engrs need to translate that into a more specific & realistic project statement. Also need to establish a preliminary cost, shedule & dimensions of the project.

The main deliverables of FS are mainly the followings:
1) Major dimensions of the projects i.e. the possible options & recommended configuration of the cogeneration plant. It will be a FS Report.
2) Establish the power/steam ratio
3) Preliminary Level 2 Project Schedule
4) +/- 30% Project Cost Estimate
5) Economic Analysis i.e. Cashflow,IRR%,Payback Period,etc
6) Project Contracting Strategy i.e. BED + EPCC, BEPC, EPCM, etc

If the project is small and not that complicated, normally we do it ourself. If not we engage the consultant. Once completed the FS, we’ll present the findings to the management for approval.

If they approve, then we will proceed to BED or BEPC or EPCC phase as per the recommended contracting strategy. At this point of time, we normally have decided the plant configuration.

Will share with yu on the BED deliverabels later on...

Thanks

norzul