July 1998


Distinguish between scheduling and planning models

To use one model for both purposes is inefficient and will give insufficient information for both aspects

Hartmann, J.C.M., Consultant

Being profitable in petroleum refining depends on using systems and tools that enable the right people/ functions to make the right decisions at the right time. Decisions are often differentiated by their time perspective (seconds, hours, days, weeks, quarters, years and beyond) or by the function/ layer in the organization that must act (advanced process control; real-time optimization; operation; scheduling, supply; strategy). Between the (local) head offices, where the higher-level supply planning takes place and the units (plants and blenders), where advanced process control, online plant optimization and blend trimming govern the operation, is the department that decides on dai

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