Figure 2 depicts a model of the example pipe-spool installation
process. The rationale for selecting modeling elements and their
parameters is detailed by Tommelein (1997a). Admittedly,
selections were somewhat arbitrary. The writer modeled salient
features yet represented only a few system characteristics so that the model's behavior and output would remain tractable.
Simplifications are consistent with the aim of this paper, which
is to illustrate (1) the impact coordination planning has on the
execution of resource-matching processes and (2) the benefits of
pull over push when uncertainty is high. Using the same
methodology and tools, more complete, industrial-strength
models can easily be developed.