RE: Unidentified device

["NIXON, Grant (Kanata)" <GNIXON@MDS.Nordion.com>]

Have you identified the source of ionizing radiation?

I have heard of old camera lenses being marginally radioactive (Th-232+decay products).



Grant Nixon



-----Original Message-----

From: Todd Brautigam [mailto:brautt@myapc.com]

Sent: Thursday, September 25, 2003 1:24 PM

To: radsafe@list.vanderbilt.edu

Subject: Unidentified device





Hi all,



At Maine Yankee, we have come across a device in a watertight canister that was apparently used to make a photographic record of water temperatures in the diffuser. Dose rates are ~ 0.2 mR/hr.



The neon green canister is 13 inches high by 6 inches diameter. The inside houses a small thermometer in the canister top, a camera lens, circuit board, a small DC motor to advance the film cartridge, and 2 battery holders.



Information on a tag inside indicate it came from Environmental Devices Corporation in Marion, MA. Attempts at contact to this point have not been productive.



Have you seen anything like this before?



I have pictures available if anyone is interested.



Thanks,





Todd Brautigam

(207) 882-4506



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