CPNPP doesn’t use the 9DP.

We use the Ludlum R9-7

Michael Macho
Radiation Protection Staff

SAFETY is first
Luminant Power
Comanche Peak Nuclear Power Plant
6322 North FM 56 or PO Box 1002
Mail Code 005A
Glen Rose, TX  76043
(254)897-5698 /(254)897-8163
(817)559-1997 Cell

From: Powernet [mailto:powernet-boun...@hpspowernet.org] On Behalf Of BJ 
Thompson via Powernet
Sent: Friday, April 13, 2018 11:16 AM
To: powernet@HPSpowernet.org
Cc: BJ Thompson <bj.thomp...@dominionenergy.com>
Subject: [Powernet] Ludlum 9DP and 9DP* Pressurized Ion Chamber


North Anna is evaluating the Ludlum 9DP pressurized ion chamber for use at the 

1.       Does your site use this instrument?

2.       Could you share feedback on what it is used for and its performance?

3.       If used at your site, could you share your operation and calibration 

Thank you for your help!

Barbara J. Thompson
North Anna Power Station
1022 Haley Drive
Mineral, Va 23117
Superintendent Health Physics Technical Services
Phone:  540-894-2638


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