ML19290C998

From kanterella
Jump to navigation Jump to search
Supplements 780829 Request for 1977 Info Re Failure of Control Rods to Fully Insert.Requests Summary of Recent Failure & Other Control Rod Drive Malfunctions.Response Should Be Sent within 90 Days
ML19290C998
Person / Time
Site: Hatch  Southern Nuclear icon.png
Issue date: 01/10/1980
From: Ippolito T
Office of Nuclear Reactor Regulation
To: Whitmer C
GEORGIA POWER CO.
References
NUDOCS 8002150316
Download: ML19290C998 (2)


Text

& L_0

[(f* **%g

,og UNITED STATES g

NUCLEAR REGULATORY COMMISSION g e -

5.L

.:< f WASHINGTON, D. C. 20555 a,

'j

I....*

' JANUARY 1 0 1980 Docket Nos. 50-321 and 50-366 Mr. Charles F. Whitmer Vice President - Engineering Georgia Power Company P. O. Box 4545 Atlanta, Georgia 30302

Dear Mr. Whitmer:

In response to our letter of August 29, 1978, you provided information on your 1977 experience of control rods failing to fully insert. We evaluated your response along with teose provided by other BWR owners.

We concluded that such events are general and that the frequencies of occurrence vary among the BWRs, apparently be uuse of different maintenance programs.

Our August 29, 1978 letter recommended that you maintain an ongoing tabulation of any additional s ch events. To determine whether or not the frequency of these events has changed for a given plant, ne now request that yc report your more recent experience. This report shoJ1d include the experience from the time of the last reported occurrence through 1979.

In addition please provide a summary of other control rod drive malfunctions, such as unlatchings, for the same time period.

The information should be provided within 90 days. For each event, identify the number of rods not fully inserted, the position of the rods, the cause for failure to fully insert, and any related maintenance activities.

This request for additional generic information is in accordance with the GA0 blanket clearance number B-180225 (R0536) which expires June 30, 1981.

Sincerely, O

4 G& v h.4 d':A.

Thomas M $polito, Chief Operating Reactors Branch #3 Division of Operating Reactors 8002150.314

f Mr. Charles F. Whitmer Georgia Power Company cc:

G. F. Trowbridge, Esquire Shaw, Pittman, Potts and Trowbridge 1800 M Street, N. W.

Washington, D. C.

20036 Ruble A. Thomas Vice President P. O. Box 2625 Southern Services, Inc.

Birmingham, Alabama 35202 Ozen Batum P. O. Box 2625 Southern Services, Inc.

Birmingham, Alabama 35202 Mr. William Widner Georgia Power Company Power Generation Department P. O. Box 4545 Atlanta, Georgia 30302 Mr. L. T. Gucwa Georgia Power Company Engineering Department P. O. Box 4545 Atlanta, Georgia 30302 Appling County Public Library Parker Street Baxley, Georgia 31413 Mr. R. F. Rogers U. S. Nuclear Regulatory Commission P. O. Box 710 Baxley, Georgia 31513