ML20008E645

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Responds to NRC 810227 Request Re Surveillance of RCS Flow Splitter Plates.Ultrasonic Testing Revealed Indications in Loop a Splitter Plate.Addl Tests Will Be Performed During Maint Outage Scheduled for Nov 1981
ML20008E645
Person / Time
Site: North Anna Dominion icon.png
Issue date: 03/04/1981
From: Sylvia B
VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.)
To: Clark R, Harold Denton
Office of Nuclear Reactor Regulation
References
149, NUDOCS 8103090327
Download: ML20008E645 (1)


Text

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VIRGINIA ELECTRIC AND l' OWE N CO M I% NY H rcuxon1>,VratorazA 2026a March 4, 1981 t

Mr. Harold R. Denton, Director Serial No. 149 Office of Nuclear Reactor Regulation N0/DCW:jmj Attn: Mr. Robert A. Clark, Chief Docket No. 50-L8 ,

Operating Reactors Branch No. 3 License No, MPF-4 7

Division of Licensing U.S. Nuclear Regulation Commission i Washington, D.C. 20555  :

Gentlemen:

SURVEILLANCE OF RCS FLOW SPLITTER PLATES  !

NORTH ANNA POWER STATION UNIT NO. 1 ,

As requested by Mr. L. B. Engle, of your staff on Friday, February 27, 1981, we are forwarding this letter of intent.

In accordance with North Anna Unit 1 Technical Specification 4.4.10.1 we have completed ultrasonic testing on all Unit 1 flow splitter plates. This testing revealed a number of indications in loop 'A' flow splitter plate. In light of these results we intend to perform additional ultrasonic testing of the Unit 1 flow splitter plates during a maintenance outage tentatively scheduled for November, 1981.

  • I We also intend to continue the augmented loosse parts monitoring program.

t Should you have any further questions feel free to contact our staff.

Very truly yours, B.R[ Sylvia l Manager - Nuclear ,

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