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Unformatted text preview: pstream (assembly)
and downstream (test) were assumed to have excess capacity for purposes of this analysis.
Future customer demand was determined using upcoming contractual delivery dates. Based on
contracts due in the next 319 days, it was determined that customers demand, on average, 11.7 cards
per week that are tested using the MTSA. This result was roughly comparable with the operating
logs for the MTSA during a recent 85 day period which showed that average throughput was 14.3
cards per week with a standard deviation of 8.9. Though the discrepancy was small, and may have
been due to sampling error or variation in demand, there was some anecdotal evidence based on
SME interviews that operators were overproducing to get ahead of the customer demand. Given the
data, however, and a desire to be conservative, it was assumed that weekly customer demand was a
random variable, D, where
D ~ N(13, 9). (5.5) Capacity constraints in the system deserves a brief discussion. Based on SME input and operational records, it was clear that upstream assembly process capacity was greater than customer
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This document was uploaded on 03/03/2014 for the course ADMIN 1 at Universidad Nacional de Colombia.
- Spring '14