This questions is intended to ask students about types of waste in Lean principles.
Lean was born out of manufacturing practices but in recent time has transformed the world of knowledge work and management. It encourages the practice of continuous improvement and is based on the fundamental idea of respect for people. Womack and Jones defined the five principles of Lean manufacturing in their book "The Machine That Changed the World". The five principles are considered a recipe for improving workplace efficiency and include: 1) defining value, 2) mapping the value stream, 3) creating flow, 4) using a pull system, and 5) pursuing perfection.
Lean principles aim to eliminate waste in processes. The eight wastes of Lean principles are:
- Defects
- Over-production
- Waiting
- Not using talent
- Transport and handling
- Inventory
- Motion waste
- Excess processing
In the scenario, the component is processed more than necessary. The engineers try to make them as accurate as possible with very little tolerance. In fact, the component does not need to be that precise. This excesses buyer's requirements and incurs costs for both buyer and supplier. The scenario is an example of over processing (or excess processing).
Overprocessing is one of the seven wastes of lean manufacturing (or 7 mudas); Overprocessing is adding more value to a product than the customer actually requires such as painting areas that will never be seen or be exposed to corrosion.
Overprocessing as one of the seven wastes is caused by having unclear standards and specifications, many operators will try to do the best job possible and will not always be aware of what truly adds value to the product or even the end use. They will therefore often expend time polishing and finishing components that do not require it.
Reference:
- CIPS study guide page 153-156
- Waste of Overprocessing; causes, costs, examples solutions, symptoms (leanmanufactur-ingtools.org) LO 3, AC 3.4

The scenario is very long with many distracting data. Students need to read carefully and use their experience to solve this problem.
The company is developing a new component which requires different type of material. But this component will not be available for mass production in 1.5 years. This means the company still needs to produce the current components with current materials until the development is finished. They must continue purchase the materials from current supplier through call-off orders. This situation is an example of straight re-buy.
Reference:
LO 1, AC 1.1

An Outcome Based Specification (OBS) focuses on the desired outcome of a service in business terms, rather than a detailed technical specification of how the service is to be provided; this allows providers scope to propose innovative solutions that might not have occurred to the procurement team. Outcome should be distinguished from output, which is the measurable results of a set of inputs. The example of difference between outcome and output is written at the bottom of page 123 in the study guide.
Outcomes should be the starting point in making new specification. However, using outcome-based specification has some setbacks:
- First, it is not easy to measure the outcomes. Usually, outcome of a project is a statement like 'increase customer satisfaction', 'maintain ambient temperature' or 'provide a convenient way to do something'. They are not easy to measure as output.
- Second, sometimes the desired outcomes require time to be materialised
- Third, outcomes can be ambiguous

Risk control is the process by which an organization reduces the likelihood of a risk event occurring or mitigates the effects that risk should it occur. CIPS preferred way to determine your risk control strategy is to use the four T's Process:
Transferring Risk can be achieved through the use of various forms of insurance, or the payment to third parties who are prepared to take the risk on behalf of the organization Tolerating Risk is where no action is taken to mitigate or reduce a risk. This may be because the cost of instituting risk reduction or mitigation activity is not cost-effective or the risks of impact are at so low that they are deemed acceptable to the business. Even when these risks are tolerated they should be monitored because future changes may make it no longer tolerable.
Treating Risk is a method of controlling risk through actions that reduce the likelihood of the risk occurring or minimize its impact prior to its occurrence. Also, there are contingent measures that can be developed to reduce the impact of an event once it has occurred. Finding an alternative sup-plier is an example of treating the risk.
Terminating Risk is the simplest and most often ignored method of dealing with risk. It is the ap-proach that should be most favored where possible and simply involves risk elimination. This can be done by altering an inherently risky process or practice to remove the risk. The same can be used when reviewing practices and processes in all areas of the business.
If an item presents a risk and can be changed or removed without it materially affecting the busi-ness, then removing the risk should be the first option considered; rather than attempting the treat, tolerate or transfer it.