WAO'98 Poster Abstract Andrew J. Kellock Ion Beams Lab K19/B1 (408) 927 2353 Almaden Research Center Maintainance Issues at the Ion Beam Lab at IBM ARC The NEC 3UH Pelletron at IBM ARC is operated 5 days/week, typically 8hrs/day. Approximately 2000 samples/year are analyzed on the machine, and with a predominantly one man operation, there is not much time for maintenance. My philosophy is run it until it breaks, with only minimal preventative maintenance. Part of the success of this technique is thoughtful machine design and operation. I will describe the operation and maintenance activities at the IBM ARC Ion Beam Lab.