ML030870135

E-mail S. Long, NRR, to M. Kirk, RES, Et Al, Fwd: Instability for Failure Pressure, W/Att e-mail 08/27/02 D. Wuokko, FENOC, to jbh1

ML030870135
Person / Time
Site:	Davis Besse
Issue date:	08/27/2002
From:	Long S Office of Nuclear Reactor Regulation
To:	Matthew Kirk, Norris W Office of Nuclear Regulatory Research
References
FOIA/PA-2003-0018
Download: ML030870135 (2)

Text

SSeven Long - Fwd: Instability for Failure Pressure Page 11 From: Steven Long ta£ f" To: Mark Kirk; Wallace Norris -

Date: 8127/02 9:06AM

Subject:

Fwd Instability for Failure Pressure FYI

ý1 01ý

I:Steven Long - Instability for Failure Pressure Page 1 From: <drwuokko@firstenergycorp.com>

To: <jbh1@nrc.gov>

Date: 8/27/02 9:02AM

Subject:

Instability for Failure Pressure Jon This information is provided inresponse to Steve Long's question on Table 1 of SIA Document W-DB-01 Q-305 transmitted to the NRC by letter Serial 1-1282, dated July 20, 2002, regarding Table 1 and the instability value of 7000 psi failure pressure for the 0.297 inch cladding thickness with an exposed area of 20.5 sq inches. SIA ran the model to instability using fixed pressure increments and obtained 7000 psi SIA has rerun the model without using fixed increments and obtained a numerical value of instability of 7219.2 psi SIA is sending us us an addendum to this Document W-DB-01Q-305 with this value. Are you going to need this addendum submitted by letter, or will this e-mail suffice?

-Dale Wuokko CC: <sml@nrc gov>, <cal@nrc.gov>, <dbnrc@firstenergycorp com>,

<tsswim@firstenergycorp com>, <pjmccloskey@firstenergycorp com>,

<mkleisure@firstenergycorp.com>, <jjpowers@firstenergycorp.com>, <jjgrabnar@firstenergycorp.com>,

<dlmiller@firstenergycorp.com>, <caprice@firstenergycorp com>