問15
頻出度★★☆
ジャストインタイムやカンバンなどの生産活動を取り込んだ, 多品種大量生産を効率的に行うリーン生産方式に該当するものはどれか。
平成31年度 春期 ITパスポート試験 問15
This question's explanation and your answers so far.
解説
問 15
Incorrectア
Not having one’s own production line and outsourcing production to other companies describes fabless operation (outsourced manufacturing, outsourcing). This externalizes the manufacturing function rather than making production itself more efficient, and it is a different concept from JIT and Kanban.
- イ
正解 Lean production (the Toyota Production System) is built on just-in-time (JIT) and the Kanban method, producing and procuring only what is needed, when it is needed, and in the amount needed, so as to thoroughly eliminate the waste of inventory and work-in-progress (intermediate goods still being manufactured). Choice “イ,” “Orders the parts that the production line needs so that they can be obtained when needed, keeping the amount of work-in-progress at an appropriate level,” precisely describes running production while minimizing inventory through JIT, so it corresponds to lean production.
Incorrectウ
Forecasting demand and producing extra is make-to-stock (push-type) production, which falls under the waste of overproduction that lean production dislikes most. It is the exact opposite of JIT, which makes only as much as is needed.
Incorrectエ
Having one person handle a single product from the start of manufacturing through to completion describes cell production (one-person booth production). It suits high-variety, low-volume production, but it is a different method from lean production, which incorporates JIT and Kanban.
ここがポイント
- Lean production (the Toyota Production System) = JIT + the Kanban method: produce only what is needed, when it is needed, in the amount needed, and eliminate the waste of inventory and work-in-progress.
- Distinguishing confusable production methods: fabless (outsourced manufacturing), make-to-stock production (overproduction), and cell production (one person does it all) are all distinct from lean production.
用語