05000285/LER-2011-003-01, Regarding Inadequate Flooding Protection Due to Ineffective Oversight

Regarding Inadequate Flooding Protection Due to Ineffective Oversight

ML111370123
Person / Time
Site:	Fort Calhoun
Issue date:	05/16/2011
From:	Nellenbach T Omaha Public Power District
To:	Office of Nuclear Reactor Regulation, Document Control Desk
References
LlC-11-0039 LER 11-003-01
Download: ML111370123 (6)

LER-2011-003, Regarding Inadequate Flooding Protection Due to Ineffective Oversight

Event date:
Report date:
Reporting criterion:	10 CFR 50.73(a)(2)(v), Loss of Safety Function 10 CFR 50.73(a)(2)(i) 10 CFR 50.73(a)(2)(vii), Common Cause Inoperability 10 CFR 50.73(a)(2)(ii)(A), Seriously Degraded 10 CFR 50.73(a)(2)(viii)(A) 10 CFR 50.73(a)(2)(ii)(B), Unanalyzed Condition 10 CFR 50.73(a)(2)(viii)(B) 10 CFR 50.73(a)(2)(iii) 10 CFR 50.73(a)(2)(ix)(A) 10 CFR 50.73(a)(2)(iv)(A), System Actuation 10 CFR 50.73(a)(2)(x) 10 CFR 50.73(a)(2)(v)(A), Loss of Safety Function - Shutdown the Reactor 10 CFR 50.73(a)(2)(v)(B), Loss of Safety Function - Remove Residual Heat 10 CFR 50.73(a)(2)(i)(A), Completion of TS Shutdown 10 CFR 50.73(a)(2)(i)(B), Prohibited by Technical Specifications
2852011003R01 - NRC Website

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Omaha Public PowsrOiBlrlcl 444 South 16k Street Mall Omaha, NE 68102-2247 LlC-11-0039 May 16, 2011 U.S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, DC 20555-0001

Reference:

1.

Docket No. 50-285

2.

Letter from OPPD (J. A. Reinhart) to !\\IRC (Document Control Desk), dated April 4, 2011 (UC-11-0023)

3.

Letter from OPPD (T. R. Nellenbach) to NRC (Document Control Desk) dated May 16, 2011 (UC-11-0051)

Subject:

Licensee Event Report 2011-003, Revision 1, for the Fort Calhoun Station Please find attached Licensee Event Report 2011-003, Revision 1, dated, May 16, 2011. This report is being submitted pursuant to 10 CFR 50.73(a)(2)(v)(D). If you should have any questions, please contact me.

Sincerely, J~ t*f/JJ1 T. R. Nellenbach Division Manager-Nuclear Operations TRN /epm Attachment c:

E. E. Collins,,Jr., NRC Regional Administrator, Region IV L. E. Wilkins, !\\IRC Project Manager J. C. Kirkland, NRC Senior Resident Inspector INPO Records Center Employment with Equal Opportunity

NRC FORM 366 (10-2010)

NRC FORM 366 U.S. NUCLEAR REGULATORY COMMISSION (10-2010)

LICENSEE EVENT REPORT (LER)

(See reverse for required number of digits/characters for each block)

APPROVED BY OMB: NO. 3150-0104 EXPIRES: 10/31/2013

, the NRC may not conduct or sponsor, and a person is not required to respond to, the information collection.

1. FACILITY NAME Fort Calhoun Station

2. DOCKET NUMBER 05000285

3. PAGE 1 OF 5

4. TITLE Inadequate Flooding Protection Due To Ineffective Oversight

5. EVENT DATE

6. LER NUMBER

7. REPORT DATE

8. OTHER FACILITIES INVOLVED MONTH DAY YEAR YEAR SEQUENTIAL NUMBER REV NO.

MONTH DAY YEAR FACILITY NAME DOCKET NUMBER 05000 2

3 2011 2011 - 003 -

1 5

16 2011 FACILITY NAME DOCKET NUMBER 05000

9. OPERATING MODE 1

11. THIS REPORT IS SUBMITTED PURSUANT TO THE REQUIREMENTS OF 10 CFR §: (Check all that apply) 20.2201(b) 20.2203(a)(3)(i) 50.73(a)(2)(i)(C) 50.73(a)(2)(vii) 20.2201(d) 20.2203(a)(3)(ii) 50.73(a)(2)(ii)(A) 50.73(a)(2)(viii)(A) 20.2203(a)(1) 20.2203(a)(4) 50.73(a)(2)(ii)(B) 50.73(a)(2)(viii)(B) 20.2203(a)(2)(i) 50.36(c)(1)(i)(A) 50.73(a)(2)(iii) 50.73(a)(2)(ix)(A) 20.2203(a)(2)(ii) 50.36(c)(1)(ii)(A) 50.73(a)(2)(iv)(A) 50.73(a)(2)(x) 20.2203(a)(2)(iii) 50.36(c)(2) 50.73(a)(2)(v)(A) 73.71(a)(4) 20.2203(a)(2)(iv) 50.46(a)(3)(ii) 50.73(a)(2)(v)(B) 73.71(a)(5) 20.2203(a)(2)(v) 50.73(a)(2)(i)(A) 50.73(a)(2)(v)(C)

OTHER 20.2203(a)(2)(vi) 50.73(a)(2)(i)(B) 50.73(a)(2)(v)(D)

Specify in Abstract below or in LICENSEE EVENT REPORT (LER)

CONTINUATION SHEET SAFETY SYSTEM FUNCTIONAL FAILURE This event does result in a safety system functional failure in accordance with NEI-99-02.

PREVIOUS EVENTS No licensee event report prior to this has identified the flooding issue. LER 2011-001 which had been written to report a flooding penetration has been cancelled as indicated in Reference 3 to the cover letter to this LER. The penetration is discussed in this LER.