Dohn,

We perform quarterly inspections and once during an outage inspection of the 
cases.  There was a potential FME concern raised.  Security force workers 
usually have the most damaged cases... maybe because of all the stuff strapped 
to their cloths that can strike against the case??

We can routinely replace 10 to 20 cases a quarter due to the damage to the case 
near the pin.  We don't have too many pins that need replacement, but all cases 
are inspected before being placed into use.

Mike Macho
CPNPP
254-897-5698

From: [email protected] [mailto:[email protected]] On Behalf Of 
LITTLE, DOHN V
Sent: Monday, October 31, 2011 9:28 AM
To: '[email protected]'
Subject: Powernet: Landauer OSLN case cracking at pin

Fort Calhoun would like to know if anyone has observed cracking or breakage of 
the Landauer OSLN case where the pin connects the TLD clip to the casing?  We 
recently saw some with damage, and after investigating, found quite a few more, 
ranging from mild cracking to broken pieces in the clip area.  We replaced them 
and sent them to the vendor to take a look at.

Thanks,
Dohn

Dohn Little
Radiation Health Specialist - Dosimetry
[email protected]  -  (402) 533-7162

Admin Building FC 2-1
OPPD - Fort Calhoun Station
9610 Power Lane
Blair, Ne. 68008



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