ML20238E825

Informs That Resistance Temp Detectors (Rtds) Currently Installed at Plant Not Mfg by Rosemount,But Rdf Rtds,Per Util 870722 Ltr Justifying Support for Proposed Deletion of RTD Bypass Manifold

ML20238E825
Person / Time
Site:	Catawba
Issue date:	08/31/1987
From:	Tucker H DUKE POWER CO.
To:	NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM)
References
NUDOCS 8709150232
Download: ML20238E825 (2)

Text

.:_j DUKE Powna GOMPANY P.O. Box 03180 )

CHARLOTTF:. N.O. 28242 HAL 15. TUCKEH - retzenopre vmm enuinn (704) am-4ssa August 31, 1987 U 3. Nuclear _ Regulatory Commission Attention: Document Control Desk {

Washington, D. C. 20555 ]

Subject:

Catawba Nuclear Station, Units 1 and 2 Docket Nos. 50-413 and 50-414 ]

Deletion of RTD Bypass Manifold

Dear Sir:

By letter dated July 22, 1987, justification was provided to support the proposed deletion of the Resistance Temperature Detector (RTD) Bypass Manifold at Catawba.

Attachment III to that letter provided the technical justification and safety analysis for the Technical Specification amendment supporting the modification.

In the first paragraph of Attachment III a statement was made that the RTD's currently installed at Catawba were manufactured by Rosemount. Please be advised that the RTD's that are currently installed are not Rosemount RTD's but RdF RTD's. The uncertainty associated with the Rosemount RTD's was not used for Catawba. The changes to the Technical Specifications are a result cf new analyses performed by Westinghouse to reflect the redistribution of .ietpoint uncertainties, available margin, deletion of the bypass loop, temperature streaming effects and the use of three (3) RTD's per loop. -

We regret any inconvenience or confusion that may have resulted by the reference to Rosemount RTD's.

Very truly yours,

,, 6 h& g/L.-

Hal B. Tucker RWO/114/sbn Attachment 0\0 8709150232 870B31' f,0 O PDR ADOCK 05000413 P pag 1

- . _ _ _ __ ___ )

av s U. S. Nuclear Regulatory Commission August 31, 1987-Page Two xc: Dr. J. Nelson Grace, Regional Administrator l U. S. Nuclear Regulatory Commission i Region II 101 Marietta Street, NW, Suite 2900 Atlanta, Georgia 30323 '5

)> 03 Mr. Heyward Shealy, Chief .

/3 Bureau of Radiological Health ;j h South Carolina Department of Health & _c j]

Environmental Control' kJ c 2600 Bull Street m Columbia, South Carolina 29201 OI)

I INPO Records Center Suite 1500 1100 circle 75 Parkway Atlanta, Georgia. 30339 M&M Nuclear Consultants 1221 Avenue of the Americas New York, New York 10020 American Nuclear Insurers c/o Dottie Sherman, ANI Library The Exchange, Suite 245 270 Farmington Avenue Farmington, CT 06032 Mr. P. K. Van Doorn NRC Resident Inspector Catawba Nuclear Station

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