Production Scheduling & Capacity Planning Flashcards

Which scheduling technique assigns jobs to work centers based on the ratio of time remaining to work remaining?

Answer: Critical Ratio (CR)

Critical Ratio is calculated as time remaining divided by work remaining, dynamically reprioritizing jobs as conditions change.

In a finite capacity scheduling system, what happens when a resource becomes overloaded?

Answer: Jobs are automatically rescheduled to available capacity slots

Finite capacity scheduling recognizes resource limits and moves jobs to feasible time slots rather than overcommitting resources.

What does the term 'takt time' represent in production scheduling?

Answer: The available production time divided by customer demand rate

Takt time sets the production rhythm needed to meet customer demand and is calculated as available time divided by required units.

Which capacity planning input identifies the standard hours required to produce one unit of a specific product?

Answer: Routing

The routing file specifies the sequence of operations, work centers, and standard run/setup times per unit for each product.

A plant operates 20 days/month, 2 shifts/day, 8 hours/shift. Planned efficiency is 85% and utilization is 90%. What is demonstrated capacity per work center per month?

Answer: 122.4 hours

Demonstrated capacity = 20 × 2 × 8 × 0.85 × 0.90 = 122.4 hours per work center per month.

In the Theory of Constraints (TOC), what is the primary goal of scheduling non-bottleneck resources?

Answer: To subordinate their schedule to the bottleneck's pace

TOC requires non-bottleneck resources to synchronize with and support the bottleneck rather than optimize independently.

Which scheduling approach is most appropriate for a job shop environment with highly varied, custom orders?

Answer: Priority dispatching rules

Priority dispatching rules (SPT, EDD, CR, etc.) dynamically sequence jobs through job shops where routing and demand vary widely.