ML071410031
| ML071410031 | |
| Person / Time | |
|---|---|
| Site: | Fort Calhoun  |
| Issue date: | 05/23/2007 |
| From: | Dave Solorio, Starkey R NRC/OE |
| To: | |
| Starkey D | |
| References | |
| EA-07-047 EN-07-036 | |
| Download: ML071410031 (2) | |
Text
PRELIMINARY INFORMATION - NOT FOR PUBLIC DISCLOSURE UNTIL VERIFICATION THAT LICENSEE HAS RECEIVED ACTIONPRELIMINARY INFORMATION - NOT FOR PUBLIC DISCLOSURE UNTIL VERIFICATION THAT LICENSEE HAS RECEIVED ACTION May 23, 2007 EN-07-036OFFICE OF ENFORCEMENTNOTIFICATION OF SIGNIFICANT ENFORCEMENT ACTION Licensee:Omaha Public Power District (EA-07-047)Fort Calhoun Station Docket No. 05000285
Subject:
ISSUANCE OF FINAL SIGNIFICANCE DETERMINATION AND NOTICE OFVIOLATIONThis is to inform the Commission that a Notice of Violation associated with a White significancedetermination process finding will be issued on or around May 29, 2007, to Omaha Public Power District as a result of inspections at the Fort Calhoun Station. This White finding, an issue of low to moderate safety significance which may require additional U.S. Nuclear Regulatory Commission inspection, involved the improper installation of the valve disk of a Containment Spray Header Isolation Valve. The improper installation resulted in a condition in which the actual position of the valve was nearly opposite of the indicated position.
This condition resulted in an inoperable train of the containment spray system for an entire operating cycle and also provided a reactor coolant system diversion flow path if shutdown cooling was initiated following certain postulated accident conditions.A Notice of Violation is included based on a violation of 10 CFR Part 50, Appendix B, Criterion V, "Instructions, Procedures, and Drawings," for conducting maintenance activities without procedures that were appropriate to the circumstances. Specifically, the maintenance and post-maintenance procedures did not require actions to verify the correct orientation of the valve. As a result, the valve was installed in the wrong orientation during maintenance, and post-maintenance testing did not detect the improper reassembly prior to returning the valve to service. It should be noted that the licensee has not been specifically informed of the enforcementaction. The schedule of issuance and notification is:Mailing of Final Significance DeterminationMay 29, 2007Telephone Notification of LicenseeMay 29, 2007The State of Nebraska will be notified. CONTACTS: Doug Starkey, OE, 301-415-3456David Solorio, OE, 301-415-2741 PRELIMINARY INFORMATION - NOT FOR PUBLIC DISCLOSURE UNTIL VERIFICATION THAT LICENSEE HAS RECEIVED ACTIONPRELIMINARY INFORMATION - NOT FOR PUBLIC DISCLOSURE UNTIL VERIFICATION THAT LICENSEE HAS RECEIVED ACTIONElectronic Distribution: EN-07-036, May 23, 2007OWFN Chairman KleinComm. McGaffigan Comm. Merrifield Comm. Jaczko Comm. Lyons
SECY OCA PA IPOWFN EDO DEDR DEDMRT OE OGC NRR NSIR OITWFN OCFOOP CENTER NMSS OIG OCIO RES ACRS FSMERegional OfficesRI RIIRIII RIVMAILPUBLICOE staffDISTRIBUTION: (Hard copy)C. Carpenter C. MontgomeryD. Starkey D. SolorioOE r/f EA-07-047 File EN binderC:\MyFiles\Checkout\EN-07-036 Fort Calhoun drs.wpd ADAMS ML071410031OFFICEOE:ESOE:BCNAMEDStarkeyDSolorioDATE05/21/0705/22/07 OFFICIAL RECORD COPY