ML19224C745
| ML19224C745 | |
| Person / Time | |
|---|---|
| Site: | Seabrook  |
| Issue date: | 06/07/1979 |
| From: | Grier B NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| To: | Tallman W PUBLIC SERVICE CO. OF NEW HAMPSHIRE |
| References | |
| NUDOCS 7907060130 | |
| Download: ML19224C745 (1) | |
Text
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UNITED STATES f
',*g c y' i NUCLEAR REGULATORY COMMISSION 7,
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REGION 1
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631 PARK AVENUE 3 Ad ' [j' O
KING OF PRUSSI A, PENNSY LVANIA 19106 g
June 7,1979 Docket Nos. 50-443 50-444 Public Service Company of New Hampshire ATTN: Mr. W. C. Tallman President 1000 Elm Street Manchester, New Hampshire 03105 Gentlemen:
This Information Notice is provided as an early notification of a possibly significant matter.
It is expected that recipients will review the infonnation for possible applicability to their facilities.
No specific action or response is requested at this time.
If further NRC evaluations so indicate, an IE Circular, Bulletin, or NRR Generic Letter will be issued to reconinend or request specific licensee actions.
If you have questions regarding the matter, please contact this office.
Sincerely,
/
n Boyce H. Grier
" Director
Enclosures:
1.
IE Information Notice No. 19-15 with Attachment 2.
List of IE Information Notices Issued in 1979 cc w/encls.
John D. Haseltine, Project Manager O)
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ENCLOSURE 1 UNITED STATES NUCLEAR REGULATCPf COMMISSION 0FFICE OF INSPECTION AND ENFORCEMENT WASHINGTON, D.C.
20555 IE Information Notice No. 79-15 Date:
June 7,1979 Page 1 of 3 DEFICIENT PROCEDURES Summary On June 2,1979, at Arkansas Nuclear One - Unit 1, while observing conditions in the control room, an NRC inspector discovered an operational deficiency that could have resulted in the emergency feedwater system remaining isolated during subseqeent power operation.
Description of Circumstances On June 2 while Arkansas Nuclear One - Unit I was preparing for startup, an NRC inspector in the control room found that during a surveillance test of the main feedwater check valves, the controls of the emergency feedwater system were positioned so that the system could not autonatically respond if needed.
The NRC inspector found that the test procedure being used by the licensed operators did not include, as it should have, in nructions either to bypass the emergency feedwater system or to return it to normal.
The plant operators, without approved procedures covering this aspect of the test, bypassed the controls that wouli have started the feedwater system automatically.
Lacking a procedural requirement to return the system to normal, there was no assurance that emergency feedwater would be provided automatically if needed.
Following the Three Mile Island accident, the NRC required that operators be trained to initiate promptly the emergency feedwater system manually if it does not come on automatically.
Thus, while no immediate safety hazard existed at the Arkansas Unit 1 plant because of the improper action, the NRC staff is concerned about the potential safety hazard of leaving the emergency feedwater system in the bypassed condition, about the possibility that other procedures at the Arkansas plant may be deficient and about the fact that the operators deviated from procedures in performing the surveillance test.
Arkansas Power and Light Company has returned the plant to cold shutdown. The June 2,1979, NRC Order confirmed the requirement for a cold shutdown until the Conmission staff is satisfied with the utility's method of controlling the development of operating procedures, the adequacy of existing procedures, and until there is assurance that operators "' ~ " "'- " '" ^ ^^ ^^" ---
DUPLICATE DOCUMENT Entire document previously entered
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7 S
79o 702.0/3/
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