Friday, March 14, 2014

Planning with Limiting factors Part1


ACCA F5 - Performance Management 



Back in article "C08 Throughput" we identify bottleneck resource as internal limiting factor of production. In this article we go through both hard (machine hour/labor hour) and soft (demand/financial regulations) limiting factors and their effect in production and sales.

Hard factors mean the factors which can be materialized, and they have concrete or actual images, and they are objective, such as traditional land, capital and labor with material form.
Soft factors mean the factors which can not be materialized, and they are abstract and they have not concrete material forms, and they are not easy to be measured, and they are created by human through the accumulation of knowledge and the advance of socialization, and they are subjective or consciousness. The soft factors include knowledge soft factor and social soft factor, and the knowledge soft factors mean the human capitals such as technology, talent, knowledge and intelligence of people, and the social factors mean the social capitals such as regulation formed by the social power guaranteeing the economic activity order.

Hard limiting factors are easy to quantify. Therefore, now we see how to deal the situation with one or more limiting factors in order to optimize contribution and minimize variable costs. Since fixed costs remain unchanged for any combination of products, they are irrelevant to decision. Therefore, we use marginal approach for decision-making process.

Deciding optimal production mix in situations with single limiting factor:
Ø  Identify limiting factor/scarce resource/bottleneck constraint
Ø  Calculate the contribution per unit for each product
Ø  Calculate the contribution per unit of the limiting factor for each product
Ø  Rank the products in order to of contribution per unit of limiting factor
Ø  Allocate resources using the ranking to achieve best production mix






CIMA Article: Limiting factors


ACCA Article: Limiting factor

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