ML20237D134

Special Rept:On 871108,safe Shutdown Facility RCS Wide Range Transmitter Out of Calibr.Instrument Could Not Be Calibrated.Requisition Initiated for Replacement Transmitter

ML20237D134
Person / Time
Site:	Mcguire, McGuire
Issue date:	12/14/1987
From:	Tucker H DUKE POWER CO.
To:	NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM)
References
NUDOCS 8712230065
Download: ML20237D134 (2)

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Duxe POWER GOMPANY P.O. BOX 03189  !

CIIAHLOTTE, N.O. 28242 HALH.TUCKEH -

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December 14,~1987 l

-U.S. Nuclear. Regulatory Commission eDocument' Control-Desk Washington, D.C. 20555

Subject:

McGuire Nuclear Station;, Units 1 and 2 Docket No. 50-369, -370 Special Report Pursuant To Technical Specifications 3.7.14.a, Commitment and 6.9.2 Gentlemen:

Please find attached a special report concerning a Safe Shutdown Facility wide range pressure transmitter that was determined to be inoperable on November 8, 1987. This report is required to be submitted because the inoperability of the instrument constitutes a missed commitment.

If there are any questions concerning this matter, please contact Steve LeRoy of our Licensing staff at (704) 373-6233.

Very truly yours, M

Hal'B. Tucker SEL/186/j gc Attachment i xc: Dr. J. Nelson Grace INPO Records Center Regional Administrator,. Region II Suite 1500 U.S. Nuclear Regulatory Commission 1100 Circle 75 Parkway 101 Marietta St., NW, Suite 2900 Atlanta, GA 30339 Atlanta,'GA 30323 Mr. Darl Hood Mr. W.T. Orders U.S. Nuclear Regulatory Commission NRC Resident Inspector Office of Nuclear Reactor Regulation McGuire Nuclear Station Washington, D.C. 20555 8712230065 871214 PDR ADOCK 05000369 h j 9 DCD  %

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Duke Power Company McGuire Nuclear Station Special Repo.rt Concerning Inoperability of Safe Shutdown Facility Reactor Coolant Wide Range Transmitter W5 On November 18, 1987 at 1130, Operations found the Safe Shutdown Facility (SSF) Reactor Coolant (NC) system wide range transmitter (INCLP5121) out of calibration. A work request was written to repair and calibrate the instru-ment. Instrument and Electrical personnel attempted to calibrate INCLP5121 but the transmitter could not be adjusted to within specified tolerance. A research of the work request history for this transmitter revealed this failure to be the first failure of INCLP5121.

Because the transmitter is a Foxboro manufactured split architecture type instrument, a replacement transmitter was not available on-site and has been requisitioned, (very few of this type of transmitter are used at McGuire).

Expected delivery is the week of December 7, 1987. Upon receipt of the transmitter, it will be installed and calibrated. A loop calibration will also be performed and the transmitter will be returned to service. The replacement transmitter is also being added to station warehouse stocks to ensure availability for any future replacements.

Compensatory measures relating to Technical Specification 3.7.14.a have been performed since the discovery of the inoperable transmitter.

This incident is considered to be of no significance with respect to the health and safety of the public.

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