ML19225B281
| ML19225B281 | |
| Person / Time | |
|---|---|
| Site: | Callaway  |
| Issue date: | 06/07/1979 |
| From: | James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| To: | Bryan J UNION ELECTRIC CO. |
| References | |
| NUDOCS 7907240444 | |
| Download: ML19225B281 (1) | |
Text
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cLEN ELLYN, ILLINOl$ 601 H JUN 7 1979 Docket No. 50-483 Docket No. 50-486 Union Electric Company ATTN:
Mr. John K. Bryan Vice President - Nuclear P. O. Box 149 St. Louis, MO 63166 Gentlemen:
This Information Notice is provided as an early notification of a possibly significant matter.
It is expected that recipients will review the infor-mation for possible applicability to their facilities.
No specific action or response is requested at this time.
If further NRC evaluations so indi-cate, an IE Circular, Bulletin, or NRR Generic Letter will be issued to recommend or request specific licensee actions.
If you have questions regarding the matter, please contact the Director of the appropriate hPC Regional Office.
Sincerely, w N\\-
James G. Keppler
' Director
Enclosure:
IE Information Notice No. 79-15 cc w/ encl:
Mr. W. H. Weber, Manager, Nuclear Construction Central Files Director, NRR/DPM Director, NRR/ DOR PDR Local PDR NSIC TIC degion I & IV Ms. K. Drey Hon. C. J. Frass, Chairman Missouri Public Service Commission l1
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U.S. NUCLEAR REGULATORY COMfISSION OFFICE OF INSPECTION AND ENFORCEMENT REGION III June 7, 1979 IE Infor=ation Notice No. 79-15 DEFICIENT PROCEDURES Su==ary On June 2, 1979, at Arkansas Nuclear One - Unit 1, while observing conditions in the control roc =, an NRC inspector discovered an operational deficiency that cculd have resulted in the e=ergency feedwater system re=aining iselated during subsequent power operation.
Description of Circu= stances On June 2 while Arkansas Nuclear One - Unit I was preparing fsr startup, an NRC inspecter in the control roo= found that during a surveillance test of the =ain feedwater check valves, the controls of the emergency feed-water syste: vere positioned so that the syste= could not auto =atically respend if needed. The NRC inspector fcund that the test procedure being used by the licensed operators did not include, as it should have, instruc-tions either to bypass the emergency feedwater syste= or to return it to nor=al. The plant operators, without approved procedures covering this aspect of the test, bypassed the controls that would have started the feedwater syste= automatically. Lacking a procedural requirement to re-turn the syste= to nor=al, there was no assurance that e=ergency feedwater would be provided automatically if needed.
Following the Three Mile Island accident, the NRC required that operators be trained to initiate pro =ptly the emergency feedwater syste: anually if it dees not ce=e on auto =atically. Thus, while no i==ediate safety ha:ard existed at the Arkansas Unit 1 plant because of the i= proper action, the NRC staff is concerned about the potential safety hazard of leaving the e=ergency feedwater syste= in the bypassed cenditien, about the possibility that other procedures at the Arkansas plant may be deficient and about the fact that the operators deviated frc= procedures in perfor=ing the surveillance te :.
Arkansas Power and Light Company has returned the plant to cold shutdown.
The June 2, 1979, NRC Order conffr-ed the recuirerent..for a. cold shutdown,.
until the Cc=nission staff is sa * '
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trolling the development of opet DUPLICATEM OCUMENT procedures, and until there is a fro those procedures.
,Enti're document.previously entered into system under:
ANO 740102O19\\
367 G6
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