ML20094D999

Fifth Interim Deficiency Rept Re Incorrect Installation of Pressure Relief & Safety Valves.Initially Reported on 830305.Caused by Waste Disposal Header Not Sized to Accommodate Both Relief Valves.Next Rept Expected by 860114

ML20094D999
Person / Time
Site:	Bellefonte
Issue date:	07/18/1984
From:	Mills L TENNESSEE VALLEY AUTHORITY
To:	James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
References
NUDOCS 8408090057
Download: ML20094D999 (2)

Text

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-&f x TENNESSEE VALLEY AUTHORITY CHATTANOOGA. TENNESSEE 37401 400 Chestnut Street Tower II) '

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~ July 18,1984 -

BLRD-50-438/82-25 BLRD-50-439/82-22 U.S. Nuclear Regulatory Commission Region II Attn: Mr. James P. O'Reilly, Regional Administrator f 101 Marietta Street, NW, Suite 2900 Atlanta, Georgia 30323

Dear Mr. O'Reilly:

BELLEFONTE NUCLEAR PLAMT UNITS 1 AND 2 - INCORRECT INSTALLATION OF PRES 3URE RELIEF AND SAFETY VALVES - BLRD-50-438/82-25, BLRD-50 439/82 FIFTH 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 and June 17, 1983. Enclosed is our fifth interim report. We expect to submit our next report by January 14 , 198 6.

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 co: Mr. Richard C. DeYoung, 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 '

g4jeO9g7J4[ vacU:1M 4Dil.,N, 1983-TVA BOTH ANNIVERSARY d g g An Equal Opportunity Employer

/~ v 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)

FIFTH 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 I condition applies to units 1 and 2.

Condition II - Two relief valves on the component cooling water piping for the coolers to reactor coolant pump P1A1 discharge into a common line which is sized too small to accommodate both relief valves. This condition applies to unit 1 only. l 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 relier valves to containment atmosphere and adding two 3-inch relief valves set at a lower pressure which exhausts into the waste disposal header.

I j The design criteria diagram and the physical drawings have been issued for both units. The relief valves hd t e been procured. The issuance of the l unit 1 support analysis has been delayed due to the disposition of Noncon-formance Report (NCR) BLN CEB 8307 (BLRD-50-438/83-57,BLRD-50-439/83-50) and TVA's schedule reevaluation. NCR BLN CEB 8307 required the development of a new modo analysis before the support analysis could be completed.

Since the hanger designs will be delayed, the unit 2 support analysis and the hanger designs will also be delayed.

Condition II The size of the common drain line from the two relier valves has been increased to accommodate the flow from both relief valves. The physical drawings and the design criteria diagram have been issued. This deficiency only affooted unit 1. The issuance of the support analysis and the hanger designs have been delayod. This delay is due to the disposition of NCR BLN CEB 8307 and the delay of the analysis involving the piping for condition I. The analysis of the piping involving condition I must be completed before the analysis of the piping involving con 11 tion II can he started.

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