Lean System

Topics: Preventive maintenance, Maintenance, Manufacturing Pages: 2 (368 words) Published: December 5, 2011
What trade-offs are involved in shifting from a traditional operations system to a lean system for: a. A manufacturing firm?
A lean system is basically quality vs. quantity. Producing quality in the lean system eliminates waste. For instance, a lean system can reduce inventory, waiting time, excessive transportation, as well as defects in products and services. “The key considerations are the time and cost requirements for successful conversion, which can be substantial” (Stevenson, 2010, p. 719). b. A service firm

There are trade-offs involved with shifting from a traditional operations system to a lean system in a service firm. I have been in the service industry for most of my life. In the beginning as a less experienced worker the operations were more of a traditional system. It was mostly about volume. We scheduled 4 haircut 3-4 haircuts an hour. The price was low. However, as my experience, training and knowledge increased the service shifted to a lean system. The trade-off for the client is a higher priced service, but also a more personalized one. Personally, I would rather not pay a low price for just a haircut. I would rather have something designed for me. Quality definitely beats quantity.

Stevenson, W. J. (2010). Operating Management (10th ed.), New York, NY: McGraw-Hill Irwin

Determine the optimum preventive maintenance frequency for each of the pieces of equipment if: breakdown time is normally distributed:
EquipmentAverage Time (days)
between BreakdownsEquipmentPreventive
Maintenance Cost Breakdown
A201 202A201$300.00$2,300
Each price of equipment is broken down with the optimum preventative maintenance frequency in bold. Preventative maintenance cost/(Breakdown cost + Preventative maintenance cost) $300/($2,300 + $300) = 0.115

0.50 – 0.115 = 0.385
z = -1.19
20 – 1.19*2 = 17.62
A201 = 18 days

$200/($3,500 + $200) = 0.054
0.50 – 0.054 =...
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