ML19241B839
| ML19241B839 | |
| Person / Time | |
|---|---|
| Site: | Marble Hill |
| Issue date: | 06/07/1979 |
| From: | James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| To: | Coughlin J PSI ENERGY, INC. A/K/A PUBLIC SERVICE CO. OF INDIANA |
| References | |
| NUDOCS 7907240438 | |
| Download: ML19241B839 (1) | |
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GL E N E.LY N. ILLINO15 60137 g, v" *e JUN 7 1979 Docket No. 50-546 Docket No. 50-547 Public Service of Indiana ATTS:
Dr. James Coug'alin Vice President, Nuclear 1000 East Main Street Plainfield, IN 46168 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 request-d at this time.
If further NRC
.aluations so indi-cate, an IE Circular, Bulletin, or NRR Generic Latter will be issued to recommend or request specific licensee actions.
If you have questions regarding the matter, please contact the Director of the appropriate NRC Regional Office.
Sincerely, 4c [b S
James G. Keprler Director i
Enclosure:
IE Information Notice No. 79-15 cc w/ encl:
Mr. R. M. Brown, Construction Project Superintendent Central Files Director, iRR/DPM Director, NRR/ DOR PDR Local PDR NSIC TIC LeBoeuf, Lamb, Leiby & MacRae C.
7907240 6 467 314
U.S. NUCLEAR REGULATORY CC""ISSION OFFICE OF,INSFECTION AND ENFORCEMENT REGION III June 7, 1979 IE Information Notice No. 79-!5 DEFICIEW PROCEDURES Su==ary on June 2, 1979, at Arkansas Nuclear One - Unit 1, vnile observing conditions in the control roo=, an NRC inspector discovered an operational deficiency that could have resulted in the emergency feedwater syste: remaining isoitted during subsequent power operation.
Description of Circu= stances On June 2 while Arkansas Nuclear One - Unit I was preparing for startup, an hAC inspector in the control roo= found that during a surveillance test of the main feedwater check valves, the controls of the emergency feed-water syste= vere positioned so that the systc= could not cutomatically respond if needed. The NRC inspector found that the test procedure being used by the licensed operators did not include, as it should have, instruc-tiens either to bypass the e=ergency feedvater 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 require =ent to re-turn the syste= to nor=al, there was no assurance that e=ergency feedvater would be provided automatically if needed.
Fellowing the Three Mile Island accident, the NRC required that operators be trained to initiate pro =ptly the emergency feedwater syste: =anually if it does not ce=e on auto =atically. Thus, while no i==ediate safety hazard existed at the Arkansas Unit 1 plant because of the i= roper action, the NRC staff 1s concerned about the potential safety hazard of leaving the e=ergency feedwater syste= in the bypassed condition, about the possibility that other procedures at the Arkansas plant may oe deficient and about the fact that the operators deviated fro = procedures in perfer=ing the surveillance test.
Arkansas Power and Light Co=pany has returned the plant to cold shutdow.
The June 2, 1979, NRC Order confir=ed the require =ent for a cold shutdown until the Co==ission staff is satisfied with the utility's method of con-procedures, and until there is assurer
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