ML20072J870
| ML20072J870 | |
| Person / Time | |
|---|---|
| Site: | Bellefonte  |
| Issue date: | 06/21/1983 |
| From: | Mills L TENNESSEE VALLEY AUTHORITY |
| To: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| References | |
| 10CFR-050.55E, 10CFR-50.55E, NCR-2089, NUDOCS 8306300254 | |
| Download: ML20072J870 (2) | |
Text
TENNESSEE VALLEY AUTHORITY TOUCheNuYSt"r"eeYkowerN
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June 21, 1983 BLRD-50-438/82-81 co
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Z ~U U.S. Nuclear Regulatory Commission Region II G'.
?f3 Attn: Mr. James P. O'Reilly, Regional Administrator
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101 Marietta Street, NW, Suite 2900
$3 Atlanta, Georgia 30303 az
Dear Mr. O'Reilly:
BELLEFONTE NUCLEAR PLANT UNIT 1 - OVERPRESSURIZED SYSTEMS DURING FLUSHING - BLRD-50-438/82 FINAL REPORT The subject deficiency was initially reported to NRC-0IE Inspector P. E. Fredrickson on November 30, 1982 in accordance with 10 CFR 50.55(e) as NCR 2089 This was followed by our interim report dated December 28, 1982. Enclosed is our final report. TVA does not now consider the subject nonconforming condition adverse to the safe operation of the plant.
Therefore, we will amend our records to delete the subject nonconformance as a 10 CFR 50.55(e) item.
If you have any questions concerning this matter, please get in touch with R. H. Shell at FTS 858-2688.
Very truly yours, TENNESSEE VALLEY AUTHORITY L. M. Mills, nager Nuclear Licensing Enclosure cc: Mr. Richard C. DeYoung, Director (Enclosure)
Office of Inspection and Enforcement U.S. Nuclear Regulatory Comission Washington, D.C.
20555 Records Center (Enclosure)
Institute of Nuclear Power Operations 1100 Circle 75 Parkway, Suite 1500 Atlanta, Georgia 30339 iq1hb
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PDR ADOCK 05000438 S
PDR An Equal Opportunity Employer
ENCLOSURE BELLEFONTE NUCLEAR PLANT UNIT 1 OVERPRESSURIZED SYSTEMS DURING FLUSHING NCR 2089 BLRD-50-438/82-81 i
FINAL REPORT Description of Deficiency During performance of construction flush NBFB, portions of the Chemic' l a
Addition and Boron Recover (NB), Makeup and Purification (NV),
Demineralized Water (RE), and Waste Disposal (WD) Systems were overpressurized to 225 psig at the low point of the NB System. The apparent cause of the overpressurization hus the inadscetent closure of valve 1NV-IFCV-380 in the main flush path in conjunction with a failure to properly throttle the construction pump being used.
Safety Implications Drawings showing affected pipe and valves were reviewed and evaluated by TVA's Division of Engineering Design for determination of corrective action.. Results of the review and evaluation resulted in a determination that these systems are "use as is." The piping and valves per the NB and NV systems, based on design calculations, were not overstressed. The portions of the RE and WD systems are not safety-related and the design criteria drawings gpecify hydrostatic testing for these systems up to 225 lb/in. Therefore, the piping and -the valves in the RE and WD systems are not in a nonconforming condition.
Had this condition remained uncorrected, it could not have adversely affected safe plant operation. Therefore, there are no safety implications to Bellefonte, and TVA no longer considers this item to be reportable under l
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