I have seen this on startup after stopping and venting the instrument normally. According to our instrument vendor (that uses Varian turbos), it is not that uncommon.
From: Stable Isotope Geochemistry [[log in to unmask]] On Behalf Of Fred Martin Kaaby [[log in to unmask]]
Sent: Thursday, March 21, 2013 7:04 PM
To: [log in to unmask]
Subject: [ISOGEOCHEM] Photo of a turbo pump that's ripped apart
I would like to draw your attention to this photo found on reddit.com/r/engineering: http://i.imgur.com/qA3Kf7f.jpg
Not me, I promise. Interesting though. By the description the turbo pump was running at 35 000 rpm, when it suddenly experienced ventilation to air which ripped it apart.
Fred M. Kaaby
Process Engineer, MS-Analyser (GC-IRMS)
Institute for Energy Technology
Phone: (0047) 63 80 66 53