*Quality control

1. A project team is studying the downtime cost of a soft-drink bottling line. Data analysis in thousands of ringgits (RM) for a 3 month period as stated in table. Construct a Pareto diagram for this analysis.

2. Table show a wrong ranking done by FMEA engineer during establishing the Severity (SEV) Ranking Criteria of he brake sub-assembly of a car. Rearrange the criteria and rating according to right concept of SEV ranking.

TYPE OF COST Back Pressure Regulator Adjust Feed Worm Jam Copper Head Lost Cooling Value Replacement Others RM 30,000 15,000 6,000 52,000 8,000 5,000 Rating a) Variation causes only slight customer annoyance. Customer will probably notice 1 only very minor performance degradation, or minor problems at next higher assembly. b) The minor nature of this type of failure would not have a noticeable effect on the next higher level assembly or overall engine performance. The customer will probably not be able to detect variation in the product. Criteria c) Customer is likely to be annoyed by the variation in the component. For example, moderate ratings would be given to undesirable attributes such as part adjustment on installation, high forces used in installing the part or visual defects. d) Variation in component feature has a major impact in that it involves potential safety considerations such as in-flight failures leading to loss of engine function. e) There will be a high degree of customer dissatisfaction due to the nature of the failure, such as inoperable sub-assembly requiring strip and rebuild. The defect has a severe affect on engine performance. Table 2: Wrong Ranking Done by an FMEA Engineer 23 3 ASSTK2 5 10