Frozen Zone

Near-term planning horizon in which schedule changes are restricted to protect execution stability.

Examples

01The frozen zone covers the next 5 working days, so no changes are made to the plan except for safety or quality issues.
02Any request to change an order inside the frozen zone needs approval from both the production and sales managers.
03Since the frozen zone was introduced, last-minute changes have dropped by 70 % and line stops for missing material have halved.