ML19224C712
| ML19224C712 | |
| Person / Time | |
|---|---|
| Site: | Haddam Neck File:Connecticut Yankee Atomic Power Co icon.png |
| Issue date: | 06/07/1979 |
| From: | Grier B NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| To: | Counsil W CONNECTICUT YANKEE ATOMIC POWER CO. |
| References | |
| NUDOCS 7907060084 | |
| Download: ML19224C712 (1) | |
Text
{{#Wiki_filter:N <- [pa nicg UNITED STATES NUCLEAR REGULATORY COMMISSION 8"3 .s, h, - REGION I S ' fe 631 PARK AVENUE 0, ,e KING OF PRUSSI A, PENNSYLVANI A 1940G 3 e' Docket No. 50-213 Connecticut Yankee Atomic Power Company ATTN: Mr. W. G. Counsil Vice President - Nuclear Engineering and Operations P. O. Box 270 Hartford, Connecticut 06101 Gentlemen: This Information Notice is provided as an early notification of a possibly significant matter. It is expected that cecipients will review the information for possible applicability to their fa.cilities. 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 ba issued to recomend or request specific licensee actions. If you have questions regarding the matter, please contact this office. Sincerely, Boyce H. Grier Direc;or
Enclosures:
1. IE Information Notice No. 79-15 with Attachment 2. List of IE Information Notices Issued in i979 cc w/encls: R. Graves, T'lant Su;:rintendent D. G. Diedrich, Manager of Quality Assurance J. R. Himelwright, Licensing Safeguards Engineer or, 9< i 7907060 Pp' Cp3
ENCLOSURE 1 UNITED STATES NUCLEAR REGULATORY 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 subsequent 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 automatically respond if needed. The NRC inspector found that the test procedure being used by the licensed operators did not include, as it should have, instructions 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 would 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 accide: the NRC required that operators be trained to initiate promptly the emerger,cy feedwater system manually if it does not come on automatically. Thus, while ro 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 F0wer 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 Commission staff is satisfied with the utility's method of controlling ti,e development of operating procedures, the adequacy of existing procedures, and until there is assurance that operators giQ ror fniata fy tbnso nrnrodnrns - DUPLICATE DOCUMENT
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