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23-Ind-A4 Production Management: December 2015

Nivaar worked solution (AI-drafted; not reviewed by a licensed engineer)

  1. Question 1 Little's Law, 5S, and the Seven Zero's
  2. Question 2 EOQ for Plastic Fasteners
  3. Question 3 Tablet-Computer Sales Forecast (Naive, Exponential Smoothing, Regression)
  4. Question 4 Li-Ion Battery Production LP Across Three Plants
  5. Question 5 Variability as a Cause of Production Inefficiency
  6. Question 6 Construction Project — CPM Network and an Accident-Driven Duration Change
  7. Question 7 Rebalancing 14 Jobs Across Three Surface-Mount Machines

Start with Question 1 →

National Technical Examinations — December 2015 — 98-Ind-A4 Production Management. Three-hour, closed-book exam; Casio or Sharp approved calculators only. Format: seven questions, each worth 20 marks (sub-part weights as tabulated on the front page); only the first five questions appearing in the answer book are marked, so candidates effectively choose 5 of 7. All seven are solved below for completeness. The paper asks for point-form answers wherever possible; the solutions below use full working for clarity.

Reference texts: Nahmias & Olsen, Production and Operations Analysis (7th ed., Waveland/McGraw-Hill) — forecasting, inventory (EOQ) and aggregate planning; Sipper & Bulfin, Production: Planning, Control, and Integration — production-management systems; Hillier & Lieberman, Introduction to Operations Research (11th ed.) — LP formulation and project scheduling (CPM/PERT); Pinedo, Scheduling: Theory, Algorithms, and Systems (5th ed.) — parallel-machine scheduling, makespan and tardiness; Hopp & Spearman, Factory Physics (3rd ed.) — variability and production-system inefficiency; Niebel & Freivalds, Methods, Standards, and Work Design — division of labour and work-design history; ISO 9001:2015 and the Toyota Production System literature — quality management, 5S/lean and TPM.