A manufacturing company makes taps which they advertise with a guarantee of durability for 10 years. At which point in time would you expect most defects to be found?
The bathtub curve of reliability describes infant-mortality failures, a comparatively stable useful-life period and eventual wear-out. Manufacturing or assembly weaknesses commonly surface soon after a product is placed in service, so the earliest time bracket is the best choice. Later failures can arise from corrosion, fatigue or ageing. The exact distribution is product-specific, and a ten-year warranty does not prove a particular failure profile. Screening, process control and sound supplier quality reduce early-life defects. A comprehensive failure-prevention programme considers the probability of failure, the consequences of interruption and the effectiveness of detection and recovery arrangements. Controls should be proportionate to asset criticality and reviewed using failure records, maintenance information and operational experience. The appropriate selection is within the first year. This follows from the distinction between the concept described and the alternative activities or measures in the answer choices. Documented responsibilities, suitable spare capacity and tested recovery arrangements can reduce the duration and consequences of disruption.
Study Guide Reference: CIPS L5M9 – Explain techniques in failure prevention and recovery that can be applied in operations management; the uploaded question bank cites study-guide page(s) 94.
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