Production scheduling: Which factors must be considered when preparing a feasible and efficient schedule?
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AComponent (product) design and specifications
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BRouting information (route sheet) defining process sequence
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CTime standards (standard times) for operations
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Dall of these
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EOnly machine availability
Answer
Correct Answer: all of these
Explanation
Introduction / Context:Production scheduling translates plans into executable shop-floor sequences. Effective schedules balance capacity, precedence, and standard times while honoring product design constraints. Ignoring any element leads to missed due dates or excessive WIP.
Given Data / Assumptions:
- Known bills of materials and engineering drawings.
- Route sheets specifying machine/process order.
- Standard times determined via work measurement.
Concept / Approach:Component design drives tolerances, required processes, and inspection. The route sheet encodes feasible sequences and eligible resources. Time standards allow loading, line balancing, due-date promise, and capacity checks. Together they enable backward/forward scheduling, dispatching rules, and realistic completion dates.
Step-by-Step Solution:
Validate process route against design specifications.Apply standard times to compute loads and start/finish windows.Sequence jobs with priority rules while respecting setups and capacities.Verification / Alternative check:Gantt charts and finite-capacity scheduling simulations confirm feasibility; KPIs like on-time delivery and queue lengths validate the plan.
Why Other Options Are Wrong:Focusing on a single factor (e.g., machine availability) ignores precedence and timing detail, leading to infeasible schedules.
Common Pitfalls:Using outdated route sheets; neglecting changeover times; relying on guessed times instead of measured standards.
Final Answer:all of these