ML061320224
| ML061320224 | |
| Person / Time | |
|---|---|
| Site: | Indian Point  |
| Issue date: | 03/02/2006 |
| From: | Axelson W Entergy Nuclear Operations |
| To: | Jason White NRC/FSME |
| References | |
| FOIA/PA-2006-0140 | |
| Download: ML061320224 (3) | |
Text
John White - Telephone Conversation.doc Page 1 From:
"Axelson, William L" <WAxelso entergy.com>
To:
<JRW1 @nrc.gov>
Date:
3/2/06 4:56PM
Subject:
Telephone Conversation.doc
<<Telephone Conversation.doc>>
Fyi--MW-i 11 sample may not have been IAW protocol??
CC:
"Mayer, Don" <DMayerl @entergy.com>
N\\Nq3
IJohn White - TEXT.htm Paqe 1 1
<<Telephone Conversation.doc>>
Fyi--MW-1i1 sample may not have been IAW protocol??
F John White - TeleDhone Conversation.doc Pacie 1 1
[John White - Telep~hone Conversation.doc Page 1 L_-
F Telephone Conversation 3/2/06 Dr. Michael Kitto (518-486-1476)
NY State Department of Health Jim Furfaro
Subject:
Sr-90 Result from MW-111 The following is a summary of my conversation with Dr. Kittle of the DOH.
- The NYSDOH uses an analytical method similar to the EPA method for Sr-90 analyses in drinking water (EPA-600/4-80-032 method 905). It also appears very similar to the U.S. DOE EML HASL 300 method (SR-03-RC). Based on our conversation it appears very sound and well documented. It includes various techniques for removing interfering ions (e.g., separations). Dr. Kittle will send me a copy of their procedure. The Y-90 is counted on a low level background gas proportional counter.
-The Sr-90 result was reported as 3+/-2pCill The error, 2 pCi/l, is a 2 sigma total uncertainty. It includes the counting error and error associated with the analytical process (preparation and counting).
- The DOH's detection limit for a 1 liter water sample for Sr-90 is about 0.7 pCi/l.
However, the sample analyzed was less than 1 liter. The detection limit for the sample was probably close to about 2 pCi/l.
-To narrow this down further, I asked Dr. Kitto what the background on his low level gas proportional counter is. He said about l cpm. He checked the Sr-90 results for me. The sample was counted three separate times (approximately a day apart). The count time was 50 minutes for each count. The gross count rate for the Sr-90 sample was about 1.2 -
1.4 cpm. It was very low; however, Sr-90 was present.
In summary, it appears that Sr-90 was present in this sample but at a very low level. The value is slightly above the detection limit.