ML20196H759

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Provides Response to NRR follow-up Questions on Special Rept 96-04 Re Alarms on Groundwater Well Mk GWA-2
ML20196H759
Person / Time
Site: McGuire, Mcguire  Duke Energy icon.png
Issue date: 07/24/1997
From: Barron H
DUKE POWER CO.
To:
NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
96-04, 96-4, NUDOCS 9708010007
Download: ML20196H759 (3)


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Duke Power Company i

A Dxi, Ewgy Company i

9,Q ucharStan'en ui N m s,x,cm 12700 Hagers Ferry Rd.

Huntersville, NC 28078-9340 H. B. Barron l

Vice Pmident, McGuire (704) 875-4800 omCE Nuclear Generation Departmen, (704) 875-4809 FAX ally 24, 1997 U.

S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, D.C.

20555

Subject:

McGuire Nuclear Station, Units 1 and 2 Docket Nos. 50-369 and 50-370 Special Report Number 96-04, Rev. 3 Groundwater Well Mk. GWA-2 Response to Follow-up Questions Attached is our response to ONRR follow-up questions on Special Report Number 96-04, Revision 3 concerning alarms on Groundwater Well Mk. GWA-2.

If there are any questions concerning this response, please contact M.

T. Cash at (704) 875-4117.

Very Truly Yours, y

H.

B.

Barron

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S. Nuclear Regulatory Commission July 24, 1997 xc:

(w/ attachment) l Mr. Luis A.

Reyes Regional AdministratcT, Region II U.

S. Nuclear Regulatory Commission Atlanta Federal Center 61 Forsyth St.,

SW, Suite 23T85 Atlanta, Georgia 30323 1

Mr. Victor Nerses U.

S. Nuclear Regulatory Commission Office of Nuclear Reactor Regulation l

- One White Flint North, Mail Stop 9H3 l

Washington, D.

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20555 l

Mr. Marvin Sykes

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f Senior Resident Inspector (Acting)

McGuire Nuclear Station i

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l Attachment McGuire Nuclear Station Special Report Number 96-04, Rev. 3 Response to ONRR Follow-up Questions l

Question # 1 Are the effects on any other structures, systems or components monitored by or in the direct vicinity of Groundwater Well Mk. GWA-2?

Answer No.

Well Mk. GWA-2 monitors the Unit 2 Reactor Building wall only.

There is no monitoring of underground l

structures, systems or components away from the Reactor j

l Building wall.

The nearest underground structures, systems or components are the diesel fuel oil tank and condenser circulating water piping which are approximately 40 feet away from Well Mk. GWA-2.

l Question # 2 l

Is there any continuous indication of level for Well Mk.

GWA-2?

Answer No, Well Mk. GWA-2 does not have an analog indication.

Outside monitors such as this location do not typically have analog indication.

When Well Mk. GWA-2 goes into alarm, the detector can be lifted to determine the height required to clear the alarm.

The typical height required to clear the alarm is approximately 1 to 2 inches.

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