A control protocol that releases work to the process based on external information—external means external to the status of the system. Push control releases work to a process independent of the amount of WIP in the process. For instance, a project schedule will direct shipment of modules to the worksite independent of whether or not the site is ready for the modules. Push control protocol allows WIP to grow without bound which has contributed in very large part to poor performance on cost and delivery
for projects.