ML20086D697
| ML20086D697 | |
| Person / Time | |
|---|---|
| Site: | Callaway  |
| Issue date: | 11/20/1991 |
| From: | Blosser J UNION ELECTRIC CO. |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| ULNRC-2517, NUDOCS 9111260225 | |
| Download: ML20086D697 (3) | |
Text
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(b4 ION r.Euicnue EE caamwtwt November 20, 1991 U. S. Nuc1 car Regulatory Conumission Document Control Desk Washington, DC 20555 ULNRC-2517 Contlemen:
DOCKET NUMBER 50-483 CALLAWAY PIANT UNIT 1 FACILITY OPERATING LICENSE NPF-30 SPECIAL REPORT 91-05 LEAKING UNDERCROUND STORACE TANK The enclosed Special Report is submitted pursuant to the Envirorunental Protection Plan concerning a leaking underground storage tank.
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Regional Administrator U.S. Nuclear Regulatory Commission U.S. Nuclear Regulatory Commission OWFN - Mail Stop 13E21 Region III Washington, D.C.
20555 799 Roosevelt Road Glen Ellyn, IL 60137 Manager, Electric Department Supervisor Licensing Missouri Public Service Commission Wolf Creek Nuclear Operating Corp.
P.O. Box 360 P. O. Box 411 Jefferson City, MO 65102 Burlington, Kansas 66839 Records Center Mr. R. L. llague Institute of Nuclear Power Operations Chief, Project Section 3C Suite 1500 U.S. Nuclear Regulatory Commission 1100 Circle 75 Parkway Region III Atlanta, GA 30339 799 Roosevelt Road Glen Ellyn, IL 60137 NRC Senior Resident Inspector
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CALIAWAY SPECIAL REPORT 91 05 LF.AKING UNDERCROUND STORAGE TANK On 10/21/91 at 1230 CDT during the removal of an underground gasoline storage tank, gasoline contaminated soils were discovered. The plant was in Mode 1 at 100% Power Operations.
This 30 day written report is submitted in accordance with Section 5.4.2 of Appendix B to the Operating License, the Environmental Protection Plan.
This is a follow-up to the Emergency Notification System (ENS) phone call made to the Nuclear Regulatory Commission (NRC) per 10CFR50.72(b)(2)(vi) on 10/22/91 at 0953 CDT following a required notification to the Missouri Department of Natural Resources (MoDNR). The ENS notification was also made to satisfy Section 4.1 of Appendix B as an occurrence of an unusual or important event that indicates or could result in significant environmental impact casually related to plant operation.
DESCRIPTION OF EVENT The plant's gasoline Underground Storage Tank (UST) failed tank tightness testing on 4/18/91 and confirmatory testing on 4/25/91. The tank was removed from service and placed in temporary closure status per Missouri regulation 10CSR20-10.070. A written report of the tightness testing results was made to the MoDNR on 5/15/91. The planned corrective actions included the removal of the UST and its associated piping and electrical equipment to permanently close the UST system.
On 10/21/91 while observing the removal of the UST system, the utility site Environmental Engineer identified unleaded gasoline contamination precent in the tank pit soil and in the piping trench extending from the UST to the gasoline dispenser 50 feet inside the protected area. The pit is located approximately 50 feet outside the plant's protected area, plant west. The gasoline contamination was confirmed in the field using a photoionization detector.
This condition was reported to the MoDNR per 10CSR20-10.061(1)(A) on 10/22/91 at approximately 0850 CDT.
CORRECTIVE ACTIONS Caso11ne contaminated soils removed during the excavation of the UST system and the UST system were disposed of in a sanitary landfill as allowed by Missouri solid waste regulations. A site assessment of the excavated areas was performed to define the extent of the gasoline contamination. Soil analysis determined the gasoline was isolated to the piping trench between the dispenser and the tank.
e Soil samples for lab testing were taken from the piping trench to determine the level of gasoline present. On 11/18/91, soil sample lab test results indicated the gasoline contamination was minor and below the cleanup standard required by the MoDNR. No further corrective actions are required.
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