Bubba G., Chris S., Gerardo M., Kyle R.

Removed HAM1's West then East doors (Chandra R. & Corey G. had prepped yesterday). 

~1/2 of the West Door's outer O-ring came out of its groove and contacted the C3 material placed on the floor for just such an event.  During the handling to re-seat the O-ring, we noticed excessive debris on it including a sliver of what looked to be remnant adhesive - from tape?  This was easily and completely removed.  However, considering the fact that this door had been leak tested under much scrutiny following the last door cycle, combined with the excessive particulate observed today, Chandra R. has elected to replace this O-ring when the door goes back on and not gamble on the sealing integrity.  The dirty O-ring can be reprocessed for future use.  A possible explanation as to the excessive debris could be the result of having removed all-but-four door bolts prior to the final wipe-down of the chamber.  A gap between the door and chamber flanges, large enough to allow debris to enter via wiping the flange perimeter, results when the door is prepped for removal.  We ended up being out of "sync" with this door removal exercise when compared to our normal sequence and didn't recognize this contamination potential.