ML12340A590

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Official Exhibit - RIV000111-00-BD01 - Hopenfeld, Demonstration of Flawed Presentation of Checworks Data
ML12340A590
Person / Time
Site: Indian Point  Entergy icon.png
Issue date: 06/29/2012
From: Hopenfeld J
Riverkeeper
To:
Atomic Safety and Licensing Board Panel
SECY RAS
References
RAS 22866, 50-247-LR, 50-286-LR, ASLBP 07-858-03-LR-BD01
Download: ML12340A590 (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 United States Nuclear Regulatory Commission Official Hearing Exhibit In the Matter of:

Entergy Nuclear Operations, Inc.

(Indian Point Nuclear Generating Units 2 and 3)

ASLBP #: 07-858-03-LR-BD01 Docket #: 05000247 l 05000286 Exhibit #:

Identified:

Admitted:

Withdrawn:

Rejected:

Stricken:

Other:

RIV000111-00-BD01 10/15/2012 10/15/2012

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

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