ML20237A858
| ML20237A858 | |
| Person / Time | |
|---|---|
| Site: | Catawba  |
| Issue date: | 12/04/1987 |
| From: | Tucker H DUKE POWER CO. |
| To: | NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM) |
| References | |
| NUDOCS 8712150313 | |
| Download: ML20237A858 (2) | |
Text
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h Dunn POWEn GOMPANY P.O. Box 33180 clLAHLOTTE, N.C. 28242 IIAL B. TUCKER Tuternione i
wwm ramourr (704) 073-450s
)l IttoLF.4M P90pt?Ur10M December 4, 1987 l
U. S. Nuclear Regulatory Commission i
I Attention: Document Control Desk Washington, D. C.
20555
Subject:
C.Lasba Nuclear Station, Units 1 and 2 Docket Nos. 50-413 and 50-414 RTD Bypass Loop Flow Measurcent Deat Sir:
l By letter dated June 29, 1987 it was requested that Technical Specification requirement to verify the RTD Bypass Loop flow on an 18-month basis be deleted.
I I
In the justification it wae stated that low flow in the bypass loops would be i
I detected and an annunciator would alarm in the Control Room.
It was also stated that local indicators are available to monitor total flow through the RTD bypass l
manifolds for each loop.
In order to provide additional assurance that there is adequate flow through the bypasa loops, Catawba personnel will verify flow at the local flow monitors on a j
three month (quarterly) inspection frequency.
This check will be started and l
continue to be conducted, when the Reactor Coolant System is at full temperature
{
l and pressure.
l Additionally, a quarterly channel calibration will be performed on the Control Room low flow alarms. This channel calibration was recently. conducted and would not be due again until mid-1989.
Ilowever, in order to provide added assurance I
that these annunciators are operating correctly, the channel calibration will be done quarterly, beginning in late September, 1988.
This letter suppler. rents a letter dated June 29, 1987, as such no license fee is required.
l l
l If there are any further questions, please advise.
l Very truly yars,
/
Ital B. Tucker RWO/1056/sbn A tta "hmen t 8712150313 871204
\\
DR ADOCK 0500 3
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L__.___._____
\\s U. S. Nuclear Regulatory Commission Decenber 4, 1987 Page Two l
xt:
Dr. J.
Nelson Grace, Regional Administrator U. S.
Nuclear Regulatory Commission Region II 101 Marietta Street, NW, Suite 2900 Atlanta, Georgia 30323 1
Mr. Heyward Shealy, Chief Bureau of Radiological Health South Carolina Department of Health &
Environmental Control 2600 Bull Street Columbia, South Carolina 29201 INPO Records Center Suite 1500 1100 Circle 75 Parkway Atlanta, Georgia 30339 Dr. K. Jabbour Office of Nuclear Reactor Regulation U. S.
Nuclear Regulatory Commission Washington, D. C.
20555 American Nuclear Insurers c/o Dottie Sherman, ANI Library The Exchange, Suite 245 270 Farmington Avenue Farmington, CT 06032 M&M Nuclear Consultants 1221 Avenue of the Ainericas New York, New York 10020 Mr. P. K. Van Doorn NRC Resident Inspector Catawba Nuclear Station l
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