ML19322E825

Interim Deficiency Rept Re Stress Analysis of Class II Lines in Low & High Head Safety Injection Sys.Several Lines Have Not Been Stress Analyzed for Fluid Temps Below 70 F.New Support Designs for Pipe Restraints Will Be Implemented

ML19322E825
Person / Time
Site:	North Anna
Issue date:	03/14/1980
From:	Stallings C VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.)
To:
References
REF-PT21-80-203-000 230, NUDOCS 8004020328
Download: ML19322E825 (2)

Text

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$hb March 14, 1980 G g 'O

- o n 'T E 1 Mr. James P. O'Reilly, Director Serial No. 23

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office of Inspection and Enforcement P0/RMT:baw C U. S. Nuclear Regulatory Commission Docket No. 50-339 Region II Permit No. CPPR-78 101 Marietta Street, Suite 3100 -

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/ Atlanta, Georgia 30303

Dear Sir:

Under the provisions of the operating license Technical Specifications and/or 10CFR 21, NRC Region II was notified on March 11, 1980 of a deficiency in the stress analysis of certain Class II lines in the low and high head safety injection system.

In accordance with the reporting requirement of 10CFR 21, the following infor: ration is submitted:

A. Name and address of reporting individual:

Mr. E. A. Baum, Executive Manager Licensing and Quality Assurance l Virginia Electric and Power Company l P. O. Box 26666 ,

l Richmond, Virginia 23261 '

B. Facility, activity, and/or component affected:

Nos 1 Anna Power Station, Unit 2 Eme.gency Core Cooling System Piping C. Name of firm constructing the facility or supplying the component,  !

, activity or service. _

l Stone li1 debater Engineering Corporation F. O. Box 2325 Boston, Massachusetts 02107 l

D. Description of defect, deficiency, or failure to comply: kD Class II (Q2) lines in the low and high head safety injection system could be subjected to finid temperatures in the 40*-50*F range during the injection phase of the Emergency Core Cooling Systes Several lines in the system have not been stress analyzed l; for finid temperatures below 70*F. If the umil temperatures of -

'. these pipes drops below 70*F, limits on equipment and pipe supports '

conid be created which have not been previonaly analysed.

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Vanonnu EucTaze en Powan Courar to Mr. James P. O'Reilly 2 E. Date of determination of reportability: _

March 10,1980 F. Si;nilar components, activities, or services:

North Anna Unit 1 C. Corrective action which has been, is being or will be taken, the individual responsible and the length of tfane to complete the action.

Several pin aupport modifications have been determined necessary.

New support designs for pipe restraints SI-R-80 and SI-R-86 have been completed and will be implemented by Stone & Webster as soon as practicable.

H. Other information. .

None.

Any information not available at this time will be included in the follow-up Licensee Event Report.

Should you require further information regarding this matter, please contact this office.

Very truly yours, I

Lgtal [4/

. M. gs Vice President-Power Supply and Production Operations cc: Director - Office of Inspection and Enforcement p

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