ML17174A403

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Requests Info to Determine Whether Frequency of Control Rods Failing to Fully Insert Has Changed Since Last Reported Occurrence.Also Requests Summary of Other Control Rod Drive Malfunctions for Same Time Period
ML17174A403
Person / Time
Site: Dresden  Constellation icon.png
Issue date: 01/11/1980
From: Ziemann D
Office of Nuclear Reactor Regulation
To: Peoples D
COMMONWEALTH EDISON CO.
References
NUDOCS 8002040154
Download: ML17174A403 (2)


Text

,.rJ..I TRIBUTION Doc e ACRS (16)

NR R

Docket Nos. 50-1~

  • Local* PDR ORB #2 Reading NRR Reading DLZiemann Mr. o. :Louis *Peoples Director of Nuclear L1cens1ng Corr.inom.,eal th Edi son Company Post Office Box 767 Chicago. Il11no1s 60690

Dear Mr. Peoples:

SJNowicki HSmith OELD OI&E (3)

BGrimes PC heck RRi ggs.

NSIC TERA JAN l 1 70--a

... o In response to our letter of September 6. 1978. you provided information on your 1977 experience of control rods failing to fully insert.

We evaluated your response along with those prov.ided by other BWR owners.

We concluded that such events are general and that the frequencies of o'ccurrence vary among the BWRs, apparently because of different maintenance programs *.

Our Septer.1ber 6, 1978 letter recor.illended that you maintain an ongoing

  • tabulation of any additional such events.

To deter.Jine \\'1hether or not the frequency of these events has changed for a given rlant. we nCM request that you report your more.recent experience.

This report should include the experience from the tine of the last reported occurrence through 1979. In addition, please provide a summary of other control rod drive malfunctions, such as unlatching, for the same time period.

The infonnation 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 ~ith the GAO blanket clearance number B-180225 (R0536) which expires June 30, 1981.

cc:

See next page NRC FORM 318 (9*76) NRCM 0240 Sincerely, Dennis L. Ziemann, Chief Operating Reactors Branch #2 Div;sion of Operating Reactors

            • ........................ 8*
  • u.s. GOVERNMENT PRINTING OFFICE: 1979*289~369

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**~r. D.! Louis Peopies
  • cc
  • Isham~ Lincoln & Beale Counselors at Law One First Nat~onal ~laza, 42nd Floor Chicago, Illinois 60603 M~. B. B. Stephenson Plant Superintendent*

Dresden Nuclear Power Station

  • Rural Route # l Morris, Illinois 60450 Anthony Z.

Rois~an Natural Resources Defense Council

  • 917 15th Street, N. W.

Washington, D. t. 20005 U. s. Nuclear Regulatory Commission ATTN:

Jimmy L. Barker P. 0. Box 706 Morris, Illinois 60450 Susan N. Sekuler

  • Assistant Attorney General Environmental Control Division 188 W. Randolph Street Suite 2315 Chicaso, Illi~ciis 60601 Morris Public Library 604 Liberty Street Morris, Illinois 60451 Chairman Board of Supervisors of Grundy County Grundy County Courthou~e Morris, Illinois 60450 * *. January 11, 1980 De~artment of Public Health ATTN:

Chief, Division of

  • .Nuclear Safety 535 West Jefferson*

Springfield, Illinois 62761 Director, Technical As~essment Division**

Office of Radiation Programs (AW-4 59)

U. S. Environmental Protection Agency Crystal Mall #2 Arlington, Virginia 20460 U. S. Environmental Protection*

Agency Federal Activities Branch Region V Office ATTN:

EIS COORDINATOR 230 South Dearborn Street Chicago, Illinois 60604

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