Only with merchants... It'd take decades though... The winterized t51b is bugged. It has several millions item health, compared to 100-2000 health that a normal item has. Even if you do Anchorage right after you exit the Vault and use it all throughout the game it won't lose more than 2% health. This includes fighting melee vs Behemoths, being fired on with Fat Mans by Talon mercs and standing in the artillery fire that hits Liberty Prime. At 98% CND it still is unrepairable, but it doesn't really need repairs, the DR never changes.