ocr: Typical Computer System Susceptibility 264 Sags 128 A rypicai computer location Surges will caperience 443 disrupoive of destructive power disturb- 36 ances each year. eo Spikes 15 Outagcs Figures based on 450 site-months of NPL power quality study data and computer design susceptibiity levels of CBEMA, Computer Business Equipment Manufaccurers Association.