Preventive Maintenence

Preventive Maintenance Stevenson ( two hundred9) includes problem 15S-3 to determine the optimum preventive sustenance frequency for separately of the pieces of equipment if breakdown is commonly distributed (p.732) The table at a lower place provides the spare-time activity addicted information: EquipmentAverage time amidst breakdowns (Days)Standard DeviationPreventive Maintenance Cost separate Cost A201202$300 $2,300 B400303$200 $3,500 C850404$530 $4,800 According to Stevenson (2009), an optimal victuals time interval for equipment, given the modal(a) time between breakdowns and pattern deviation, provides trading opeproportionns managers a decision-making tool for preventive maintenance with the long-acting practical use of facilities or equipment without a breakdown (p. 730). Stevenson (2009) suggests first, development the ratio Preventive Cost/Breakdown Cost = luck to preserve the cost of preventive maintenance to the cost of a breakdown repa ir, then determining z, i.e.

, the number of standard deviations from the stringent and adding the average time between breakdowns, optimal maintenance intervals for each pillowcase of equipment would be: EquipmentProbabilityZMean + Z = optimum Maintenance legal separation A201$300/$2,300 = .1301.1220 1.12(2) = 17.76 days B400$200/$3,500 = .0571.5830 1.58(3) = 25.26 days C850$530/$4,800 = .1101.2240 1.22(4) = 35.12 days kinda of reading the z table values from the text, an online z-score calculator buttocks be used to find the number of standard deviations from the mean, given a probability ( ordinance La b, n.d.). References legislation Lab. ! (n.d.). Z-score calculator [online application]. Retrieved from Formula Lab website http://www.fourmilab.ch/rpkp/experiments/analysis/zCalc.html Stevenson, W. (2009). Operations Management (10th ed.). newly York, NY: McGraw-Hill.If you require to get a full essay, order it on our website: OrderCustomPaper.com

If you want to get a full essay, visit our page: write my paper