To facilitate schedule, control costs, and project scope, Apex recommends to our clients  this project flow procedure:

CEP (Conceptual Engineering Package) Provides an order of magnitude (OOM) estimate  +/- 35% that allows the client to make a “go or no go” decision.

BEP (Basic Engineering Package) Provides basic deliverables to determine a +/- 15% cost estimate.  A BEP package will amount to 10-15% of the total engineering  effort which allows the project scope  and cost to  be defined and set.

DEP (Detailed Engineering Package) the “traditional” engineering package, provides documentation for fabrication,  construction, and maintenance.