ML20136C620
| ML20136C620 | |
| Person / Time | |
|---|---|
| Site: | Bellefonte  |
| Issue date: | 12/19/1985 |
| From: | Hufham J TENNESSEE VALLEY AUTHORITY |
| To: | Grace J NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| References | |
| NCR-4414, NUDOCS 8601030373 | |
| Download: ML20136C620 (3) | |
Text
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s TENNESSEE VALLEY AUTHORITY CH ATTANOOGA. TENNESSEE 374,01 SN 157B Lookout Place) O December 19, 1985 lIg BLRD-50-438/85-22 U.S. Nuclear Regulatory Commission Region II Attn:
Dr. J. Nelson Grace, Regional Administrator 101 Marietta Street, IM, Suite 2900 Atlanta, Georgia 30323
Dear Dr. Grace:
BELLEFONTE NUCLEAR PLANT UNIT 1 - DEFICIENT DOCUMENTATION FOR CONDUIT FIRE STOPS IN THE UNIT 1 DIESEL GENERATOR BUILDING - B' AD-438/85 FINAL REPORT This subject deficiency was initially report' to NRC-OIE Inspector Linda Watson on July 24, 1985 in accordr..e with 10 CFR 50.55(e) as NCR 4414.
This was followed by our first interim report dated August 20, 1985.
Enclosed is our final report.
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 J
fu m
ager of Lic'nsing Enclosure cc:
Mr. James Taylor, Director (Enclosure)
Office of Inspection and Enforcement U.S. Nuclear Regulatory Commission Washington, D.C.
20555
/
Records Center (Enclosure)
Institute of Nuclear Power Operations 1100 circle 75 Parkway, Suite 1500 Atlanta, Georgia 30339 B6'01030373 851219 PDR ADOCK 05000438 S
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- I An Equal Opportunity Employer g 7
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ENCLOSURE BELLEFONTE NUCLEAR PLANT UNIT 1 DEFICIENT DOCUMENTATION FOR CONDUIT FIRE STOPS IN THE UNIT 1 DIESEL GENERATOC BUILDING BLRD-50-438/85-22 NCR 4414 10 CFR 50.55(e)
FINAL REPORT Description of Deficiency Conduit fire stop sealing program initiated in the unit 1 diesel generator building was performed under the requirements of Bellefonte Nuclear Plant (BLN) Quality Control Procedure (QCP) 3.5, " Penetration Fire Stops and Pressure and Moisture Seals," and cognizance of the Electrical Engineering Unit (EEU). At the time the seals were installed, temporary identification numbers were assigned to the documentation. After the installation activity was conpleted, the Office of Engineering (OE) issued drawings depicting the official identifacation (reference SDWO816-RZ, 818-RZ series). An unsuccessful attempt was made by BLN personnel to reassign the completed documentation with permanent identification. Therefore, the actual status of the fire stop sealing program is indeterminate. This deficiency is applicable to the unit 1 diesel generator building at BLN only.
The cause of the deficiency was a failure to develop an adequate identifying and tracking program for the installation of the fire stop seals.
Safety Implications Possible deficiencies in conduit fire stop seals could allow the propogation of fire between designated fire areas and could allow contaminated smoke or gases to flow between designated pressure areas. This could potentially affect the ability to achieve and maintain the safe shutdown of the plant.
Therefore, if this condition had remained uncorrected, the safe operation of the plant could have been adversely affected.
Corrective Action BLN Office of Construction (OC) has conducted a sampling of the seals in the unit 1 diesel generator building in accordance with BLN QCP 5.18. "Firestops, Moisture, Pressure, and Radiation Seals," and Military Standard (MIL-STD) 105D to check for cell structure and fill. The sampling identified that additional actions will be required to complete the fire stop sealing program for the
".h unit 1 diesel generator building.
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.4 1-TVA's Office of Engineering (OE) has provided OC with the official ID numbers for the conduit fire stop seals in the unit 1 diesel generator building. All of the seals will be reinspected, resealed if necessary, and documented--
utilizing the new identification numbers shown on the SDWO816-RZ, 818-RZ drawing series. This action will be completed by one year before fuel load of unit 1.
To prevent recurrence, all conduit fire stop seals now have official identi-fication and are now monitored by the ECM&D (Engineering, Construction, Monitoring and Documentation) computer program, which tracks the current status of the fire stop seals.
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