ML19224C718
| ML19224C718 | |
| Person / Time | |
|---|---|
| Site: | Beaver Valley |
| Issue date: | 06/07/1979 |
| From: | Grier B NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| To: | Woolever E DUQUESNE LIGHT CO. |
| References | |
| NUDOCS 7907060092 | |
| Download: ML19224C718 (1) | |
Text
-'fV " ' "y' UNITED STATES Tk
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i NUCLEAR REGULATORY COMMISSION I
REGION I 7
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G31 PARK AVENUE y
,,h' KING OF PRUSSI A, PENNSY LVANI A 19406 June 7, 1979 Docket No. 50-412 Duquesne Light Company ATTN:
Mr. E. J. Woolever Vice President 435 Sixth Avenue Pittsburgh, Pennsylvania 15219 Gentlemen.
This Information Notice is provided as an early notification of a possibly significant matter.
It is expected that recipients will review the information 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 recommend or request specific licensee actions.
If you have questions regarding the matter, please contact this office.
Sincerely,
/ hd L
oyce Grier
' Director Enclosures :
1.
IE Information Notice No. 79-15 with Attachment 2.
List of IE Information Notices Issued in 1979 cc w/encis:
R. J. Washabaugh, Quality Assurance Manager
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Ef1 CLOSURE 1 Uf1ITED STATES flUCLEAR REGULATORY COMMISSI0f1 0FFICE 0F If1SPECTI0ft Afl0 Ef1FORCEMEf1T WASHIf1GT0ft, D.C.
?0555 IE Information flotice flo. 79-15 Date:
June 7, 1979 Page 1 of 3 DEFICIEf1T PROCEDURES Summary On June 2,1979, at Arkansas fluclear One - Unit 1, while observing conditions in the control room, an f1RC 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 fluclear he - Unit 1 was preparing for startup, an f1RC 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 tFat the system could not automatically respond if needed.
The flRC 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 feedwattr 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 accident, the f1RC requirec' 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 f1RC 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, flRC Order confirmed the requirement for a cold shutdown until the Cocmission staff is satisfied with the utility's method of controlling the development of operating procedures, ti g '=-m# avj Qijpgrocedures, and until there is assurance that operatorrr
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