ML20071B467
| ML20071B467 | |
| Person / Time | |
|---|---|
| Site: | Bellefonte  |
| Issue date: | 02/18/1983 |
| 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 8302280335 | |
| Download: ML20071B467 (2) | |
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TENNESSEE VALLEY: AUTHORITY CH ATTANOOGA. TENNESSEE 374ot 400 Chestnut Street Tower II
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February 18, 1983-c.a -
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- U.S. Nuclear Regulatory Commission C
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^h Attn: 'Mr. James P. O'Reilly, Regional Administrator ca 101 Marietta Street, Suite 3100
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- Atlanta, Georgia-_30303
Dear Mr. O'Reilly:
BELLEFONTE NUCLEAR PLANT UNITS 1 AND 2 - MAKEU?'AND PURIFICATION LETDOWN COOLER INLET /0UTLET PIPING REVERSED - BLRD-50-438/83-14, BLRD-50-439/83 FIRST INTERIM REPORT The subject deficiency was initially reported to NRC-0IE' Inspector-D. M.1Verrelli on January 24,:1983 in accordance_with 10 CFR 50.55(e) as NCR BLN BLP'8303 Enclosed is our first interim report. We expect to i-submit our next report by December 14, 1983 If you have any questions, please get in touch with R.'H. Shell at FTS-858-2688.
Very truly yours, TENNESSEE VALLEY AUTh0RITY L. M. Mills, er l
-Nuclear Licensing Enclosure l
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Mr. Richard C. DeYoung, Director (Enclosure)
Office of Inspection and Enforcement U.S. Nuclear Regulatory Commission
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ENCLOSURE BELLEFONTE NUCLEAR PLANT UNITS 1 AND 2 -
MAKEUP AND PURIFICATION LETDOWN COOLER INLET / OUTLET PIPING REVERSED NCR BLN BLP 8303 BLRD-50-438/83-14, BLRD-50-439/83-10 10 CPR 50.55(e)
FIRST INTERIM REPORT Description of Deficiency The makeup and purification letdown coolers 1NV-MCLR-008 and 2NV-MCLR-007 are mounted such that makeup / purification letdown line inlet piping is connected to the cooler outlet nozzle,.and the outlet piping is connected to the cooler inlet nozzle. The letdown cooler inlet nozzle is provided with an Inconel tube sheet to accommodate the high letdown water temperature.
Under the present arrangement, the outlet nozzle of the indicated coolers would be subjected to a condition for which it was not designed.
The condition existed because the design of the piping and the mounting of the coolers was based on opposite hand coolers, while in reality, the coolers are identical. This condition was discovered during a site inepection by Babcock and Wilcox personnel.
Interim Progress The letdown coolers in question are being inverted to establish the correct inlet / outlet relationship between the letdown lines and the letdown coolers. As a result of this action, the component cooling water and the TVA-letdown cooler supports will have to be revised. These design activities are now in progress.
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