ML102920130

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Email - from: Orf, Tracy to Lake, Louis Dated Tuesday, December 08, 2009 6:29 Am Subject: FW: Updated CR3 Root Cause Chart Attachments: Root Cause Update for Nrc.Pptx
ML102920130
Person / Time
Site: Crystal River Duke Energy icon.png
Issue date: 12/08/2009
From: Orf T
Plant Licensing Branch II
To: Lake L
NRC/RGN-II/DRS/EB3
References
FOIA/PA-2010-0116
Download: ML102920130 (2)


Text

Sengupta, Abhijit From: Orf, Tracy Sent: Tuesday, December 08, 2009 6:29 AM To: Lake, Louis

Subject:

FW: Updated CR3 Root Cause Chart Attachments: Root Cause Update for NRC.pptx _

From: McCabe, Brian [mailto: Brian. McCabe@pgnmail.com]

Sent: Monday, December 07, 2009 7:27 AM To: Sykes, Marvin; Wert, Leonard; Kennedy, Kriss; Orf, Tracy; Saba, Farideh

Subject:

Updated CR3 Root Cause Chart

Root Cause Analysis - PII Metrics as of Dec 3rd 2009 Open FailureModes 80 L"(C ) External Events 70 s (ý) Operational Events 60 ) Inadequate Containment C

  • (Citting 50- ) Inadequate Concrete - Tendon ir teractions 40- ) Chemically or Environmentally Irduced Aging 30-
  • (4) Shrinkage, Creep and Settlement 20
  • l () Inadequate Use of Concrete Materials I

10 l 0( Inadequate Concrete 0 Kra U L-1 l

C ,nstruction A AA AA A A A A A C ( C; CIP. [](1) Inadequate Concrete Design We'e q'e~vv~ '~c due to High Local Stress 1

V Progress Energy