ML20072G749
| ML20072G749 | |
| Person / Time | |
|---|---|
| Site: | Bellefonte  |
| Issue date: | 06/17/1983 |
| 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, NUDOCS 8306280619 | |
| Download: ML20072G749 (2) | |
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TENNESSEE VALLEY AUTHORITY cp DC w
CHATTANOOGA. TENNESSEE 374o1 p
p-400 Chestnut Street Tower II c-ro p
'R June 17, 1983 9
BLRD-50-438/82-25 g
QO BLRD-50-439/82-22 tP U.S. Nuclear Regulatory Commission Region II Attn: Mr. James P. O'Reilly, Regional Administrator 101 Marietta Street, NW, Suite 2900 Atlanta, Georgia 30303
Dear Mr. O'Reilly:
BELLEFONTE NUCLEAR PLANT UNITS 1 AND 2 - INCORRECT INSTALLATION OF PRESSURE RELIEF AND SAFETY VALVES - BLRD-50-438/82-25, BLRD-50-439/82 FOURTH INTERIM REPORT The subject deficiency was initially reported to NRC-0IE Inspector Don Quick on March 5, 1982 in accordance with 10 CFR 50.55(e) as NCR BLN BLP 8210. This was followed by our interim reports dated April 2 and July 13, 1982 and January 7, 1983 Enclosed is our fourth interim report. We expect to submit our next report by July 18, 1984.
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 Conunission Washington, D.C.
20555 Records Center (Enclosure)
Institute of Nuclear Power Operations 1100 Circle 75 Parkway, Suite 1500 Atlanta, Georgia 30339 8306280619 830617 OyFICIAl=h PDR ADOCK 05000438 S
PDR d'
An Equal Opportunity Employer
/I
ENCLOSURE BELLEFONTE NUCLEAR PLANT UNITS 1 AND 2 INCORRECT INSTALLATION OF PRESSURE RELIEF AND SAFETY VALVES NCR BLN BLP 8210 BLRD-50-438/82-25, BLRD-50-439/82-22 10 CFR 50.55(e)
FOURTH INTERIM REPORT Description of Deficiency Condition I - The two relief valves on the component cooling water supply lines to the shell side of the letdown coolers discharge into a common waste disposal drain header. The waste disposal header is not sized to accommodate both relief valves. Also, there are several other smaller relief valves discharging into this same waste disposal header. This condition applies to units 1 and 2.
Condition II - Two relief valves on the component cooling water piping for the coolers to reacter crolant pump PTA1 discharge into a common line which is sized too small to accommodate both relief valves. This condition applies to unit 1 only.
These conditions violate ASME Code Section III, Division I, ND-3677.3d(2).
Interim Progress Condition I TVA has proceeded with the solution of exhausting the two 6-inch relief valves to containment atmosphere and adding two 3-inch relief valves set at a lower pressure which exhausts into the waste disposal header.
The design criteria diagram and unit 1 physical piping drawings have been issued. The relief valves have been procured. The issue of unit 1 support analysis has been rescheduled to July 1, 1983, due to other design changes brought about by NCR BLN BLP 8303 which affects this anlaysis problem.
i l
This will delay completion of the piping system hanger design.
Condition II 1
The size of the common drain line from the two relief valves will be l
increased to accommodate flow from both relief valves as stated in the third interim report.
l The physical piping drawings, support analysis, and hanger design work has been delayed due to the addition of engineering changes brought about by NCR BLN BLP 8236.
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