Production Planning And Control A Comprehensive Approach Pdf Fixed May 2026

Production Planning and Control — A Comprehensive Approach

Implementation Roadmap (practical, phased)

1. Baseline assessment: map current processes, metrics, and pain points.
2. Set objectives and KPIs aligned to business goals.
3. Cleanse and integrate master data (BOMs, routings, lead times).
4. Implement foundational systems (ERP/MRP) and define planning policies.
5. Pilot APS/finite scheduling in a production cell.
6. Roll out shop-floor control (MES, tracking) and link to planning.
7. Establish continuous improvement routines and periodic reviews.

1. Routing (Determining the Path)

Routing defines the precise path a product takes from raw material to finished good. It specifies:

• Sequence of operations (e.g., Cut → Weld → Paint → Assemble)
• Machines to be used (Lathe #4, Oven #2)
• Standard time per operation

Output: Route sheet & operation sheet.

4. Dispatching (Authorizing the Action)

The execution phase. Dispatching releases work orders to the shop floor. It involves issuing: production planning and control a comprehensive approach pdf

• Job cards
• Material requisition slips
• Tool room tickets A dispatcher acts as the air traffic controller of the factory.

5. Follow-Up (Expediting & Correcting)

The control mechanism. Follow-up tracks actual progress against the schedule. Key metrics include: Production Planning and Control — A Comprehensive Approach

• On-Time Delivery (OTD)
• Schedule Adherence
• Work-in-Process (WIP) levels When variance occurs (e.g., machine breakdown), the controller expedites the delayed order or re-schedules lower-priority jobs.

Technology and Systems

• ERP for integrated data and transactional control.
• MRP/APS (Advanced Planning & Scheduling) for detailed planning and optimization.
• MES for real-time execution and traceability.
• APS features: finite capacity, optimization algorithms, scenario simulation.
• Data analytics & BI for forecast accuracy, KPI dashboards, root-cause insights.
• Integration across CAD/BOM, procurement, sales, and logistics is critical.

2. Scheduling (Setting the Timeline)

Scheduling attaches calendar dates to the route. This ranges from high-level master schedules (weeks/months) to detailed shop-floor schedules (hours/minutes). Forward Scheduling: Starts now

• Forward Scheduling: Starts now; calculates finish date.
• Backward Scheduling: Starts from the due date; calculates start time.
• Tools: Gantt Charts, Critical Path Method (CPM), and Theory of Constraints (TOC) drum-buffer-rope.