QUESTION 9 In considering which maintenance strategy to adopt an organisation has determined costs as follows: CR - Typical materials cost in making good a breakdown = $18 000.00 CM = Cost of materials for scheduled maintenance stoppage = $12 000.00 L = Labour cost per hour for scheduled maintenance and for breakdown $221/ h CPB = Process cost per hour during breakdown $45 000.00 /h Cpp - Process cost per hour during scheduled maintenance $45 000.00/h m-maintenance frequency (number of planned maintenance stoppages/year) Mean maintenance time = 30 hours The overall failure rate for the plant is 0.27 year. Find TLOC for preventive-only maintenance strategy for a ten-year period when two maintenance stoppages occur every year