ML102920516

Photo

ML102920516
Person / Time
Site:	Crystal River
Issue date:	09/20/2010
From:	Progress Energy Co
To:	Office of Information Services
References
FOIA/PA-2010-0116
Download: ML102920516 (2)

Text

4~2 Root Cause Analysis - PII Metrics as of Dec 3 rd 2009 Open FailureModes 80 ~u i) External Events

(;) Operational Events 60~ _____

QT) Inadequate Containment Cutting

• (E.) Inadequate Concrete - Tendon interactions 40 )Chemically or Environmentally Ir duced Aging 30 (Z ) Shrinkage, Creep and

• ttlement 20 ) Inadequate Use of Concrete laterials 10 wI~(, '.)Inadequate Concrete Construction U

0

[](1) Inadequate Concrete Design due to High Local Stress V NýPN bVNV, VV e Pro ress Energy 1