1. 1 LBT Q4 2008 Eng/SW Review PVM: Preventive Maintenance

2. 2 Highlights (Q4/2008) Preventive maintenance system works on the mountain Preventive maintenance system works on the mountain Latch station PM has eliminated latch stations as being a major contributor to enclosure down time Latch station PM has eliminated latch stations as being a major contributor to enclosure down time Chiller PM maintains cooling system operation Chiller PM maintains cooling system operation Crane PMs continue Crane PMs continue Mirror support systems, safety systems... All benefit from preventive maintenance efforts Mirror support systems, safety systems... All benefit from preventive maintenance efforts Continued PM on all systems, including PMs of operating systems, like HBS, latch stations, equipment, etc… Continued PM on all systems, including PMs of operating systems, like HBS, latch stations, equipment, etc…

3. 3 Open Issues Technical Technical Add to PM schedule all of the little and big things that might go wrong, continues Add to PM schedule all of the little and big things that might go wrong, continues Schedule Schedule Scheduled for 2009 Scheduled for 2009 Financial Financial Flat paper filters, round filters, grease, oil, glycol, and other maintenance supplies Flat paper filters, round filters, grease, oil, glycol, and other maintenance supplies Resource Resource Budget Budget

4. 4 Planning (Q1/2009) Continue PMs on all systems, including PMs of operating systems, like HBS, latch stations, equipment, etc… Continue PMs on all systems, including PMs of operating systems, like HBS, latch stations, equipment, etc…