ML12181A374
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| ML12181A374 | |
| Person / Time | |
|---|---|
| Site: | Indian Point  |
| Issue date: | 06/29/2012 |
| From: | Hopenfeld J Riverkeeper |
| To: | Atomic Safety and Licensing Board Panel |
| SECY RAS | |
| Shared Package | |
| ML12181A367 | List: |
| References | |
| RAS 22866, 50-247-LR, 50-286-LR, ASLBP 07-858-03-LR-BD01 | |
| Download: ML12181A374 (3) | |
Text
Dr. JORAM HOPENFELD Demonstration of Flawed Presentation of CHECWORKS Data Figure 1: A plot selected at random* from an Entergy CHECWORKS Report, showing how the data is presented by Entergy:
- Excerpted from RIV00016A (CSI Technologies, Inc., Indian Point Unit 2 CHECWORKS FAC Model, Calculation No. 050714b-01, Revision 1, September 12, 2006, Batestamp IPEC00168480).
RIV000111 Submitted: June 29, 2012
2 l P a g e Figure 2a:
The non-conservative area of Figure 1 is re-plotted for comparison with Figure 3b below. Predicted wear on the y axis, measured wear on the X-axis. Top line is the LCF=1.060 line:
LCF Line
-50%
Predicted wear (mils
3 l P a g e Figure 2b Showing how many more non-conservative points are not bounded by the 50% when the measured data is plotted on the Y axis and the predicted data on the x axis:
Measured wear (mils) 50%
LCF Line