COMMERCE 2OC3 Lecture Notes - Lecture 15: Conwip, Expert System, Gant (Retailer)
26 Jun 2018
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CHAPTER 15: SHORT-TERM SCHEDULING
VIDEO – HARD ROCK CAFÉ
WITH PROPER SCHEDULNG – LOWER COSTS, EFFICIENCY, BETTER REPUTATION
AIR CANADA
About 10% of Air Canada’s flights are disrupted per year, half because of weather
Cost is millions of dollars in lost revenue, overtime pay, food and lodging vouchers
The Operations Control Centre at Toronto’s Pearson Airport adjusts to changes, notifies
passengers, and keeps flights flowing
Labour disruptions also causes delays
SHORT-TERM SCHEDULING
Short-term schedules translate capacity decisions, aggregate planning, and master schedules
into job sequences and specific assignments of personnel, materials, and machinery
IMPORTANCE OF SHORT-TERM SCHEDULING
Effective and efficient scheduling can be a competitive advantage
Faster movement of goods through a facility means better use of assets and
lower costs
Additional capacity resulting from faster throughput improves customer service
through faster delivery
Good schedules result in more dependable deliveries
SCHEDULING ISSUES
Scheduling deals with the timing of operations
The task is the allocation and prioritization of demand
Significant issues are
The type of scheduling, forward or backward
The criteria for priorities
SCHEDULING DECISIONS
SUGGESTED PROBLEMS: 1-7, 9, 11 – PROBLEMS: 1,2,10,16,27
find more resources at oneclass.com
find more resources at oneclass.com
SCHEDULING FLOW
SUGGESTED PROBLEMS: 1-7, 9, 11 – PROBLEMS: 1,2,10,16,27
find more resources at oneclass.com
find more resources at oneclass.com
FORWARD AND BACKWARD SCHEDULING
Forward scheduling starts as soon as the requirements are known (TODAY)
Produces a feasible schedule though it may not meet due dates
Frequently results in buildup of work-in-process inventory
Backward scheduling begins with the due date and schedules the final operation first
Schedule is produced by working backwards through the processes
Resources may not be available to accomplish the schedule
* Often these approaches are combined to develop a trade-off between a
feasible schedule and customer due dates
SUGGESTED PROBLEMS: 1-7, 9, 11 – PROBLEMS: 1,2,10,16,27
find more resources at oneclass.com
find more resources at oneclass.com
Document Summary
With proper schedulng lower costs, efficiency, better reputation. About 10% of air canada"s flights are disrupted per year, half because of weather. Cost is millions of dollars in lost revenue, overtime pay, food and lodging vouchers. The operations control centre at toronto"s pearson airport adjusts to changes, notifies passengers, and keeps flights flowing. Short-term schedules translate capacity decisions, aggregate planning, and master schedules into job sequences and specific assignments of personnel, materials, and machinery. Effective and efficient scheduling can be a competitive advantage. Faster movement of goods through a facility means better use of assets and lower costs. Additional capacity resulting from faster throughput improves customer service through faster delivery. Good schedules result in more dependable deliveries. Scheduling deals with the timing of operations. The task is the allocation and prioritization of demand. Forward scheduling starts as soon as the requirements are known (today) Produces a feasible schedule though it may not meet due dates.
