ML20210L801
| ML20210L801 | |
| Person / Time | |
|---|---|
| Site: | Beaver Valley |
| Issue date: | 04/11/1986 |
| From: | Carey J DUQUESNE LIGHT CO. |
| To: | Murley T NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| References | |
| 2NRC-6-035, 2NRC-6-35, 86-05, 86-5, NUDOCS 8605020065 | |
| Download: ML20210L801 (2) | |
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'Af Duquesne Light tm6,2 Nuclear Construction Division Telecopy (41 )
2
$nse"u'g"Ois20s April 11, 1986 United States Nuclear Regulatory Commission Region I 631 Park Avenue King of Prussia, PA 19406 ATTENTION:
Dr. Thomas E. Murley Administrator
SUBJECT:
Beaver Valley Power Station - Unit No. 2 Docket No. 50-412 Potential Significant Deficiency Report 86-05 Gentlemen:
This Potentially Reportable Significant Deficiencey Report rel ating to diesel generator exhaust pipe insulation failure and subsquent fire is being submitted pursuant to the requirements of 10CFR50.55(e).
This is a interim report.
It is anticipated that a "inal report will be submitted by May 15, 19867 DUQUESNE LIGHT COMPANY By J."J.
Carey V'
Vice President GH0/jdw NR/PS DR/8605 Att ment AR cc:
Mr. P. Tam, Project Manager (w/a)
Mr. J. M. Taylor, Director (3) (w/a)
Mr. W. Troskoski, Sr. Resident Inspector (w/a)
Mr. L. J. Prividy, NRC Resident Inspector (w/a)
INP0 Records Center (w/a) i NRC Document Control Desk (w/a) peR'1888RBt8Qaa S
5,
4 Wt Beaver Valley Power Station - Unit No. 2 Duquesne Light Company Potential Significant Deficiency Report 86-05
"_ Diesel Generator Exhaust Pipe Insulation Failure and Fire" 1)
SUMMARY
During testing of the BVPS-2 Emergency Diesel Generator, the thermal insulation on the exhaust pipe collapsed.
Also, construction debris and the asphalt and gravel roofing of the Diesel Generator Building were ignited by the high temperature exhaJst gases.
2)
IMMEDIATE ACTION TAKEN The fire was immediately extinguished by the site safety forces.
On March 18, 1986, Mr. S. D. Hall, Senior Compliance Engineer, DLC Regulatory Affairs Department, notified Mr. Lowell Trip, NRC Regit,n I,
of this potentially reportable deficiency in accordance with 10CFR50.55(e).
3)
DESCRIPTION OF THE DEFICIENCY During testing of diesel generator (2EGS*RG2-1) on March 15, 1986, the thermal insulation lining of the exhaust hood and thermal insula-tion on the exhaust pipe collapsed.
This insulation could have blocked the outlets of the exhaust hood s, thus increasir.] diesel exhaust back pressure and possibly decreasing diesel power output.
Also, construction debris and the asphalt and gravel roofing of the diesel generator building were ignited by the high temperature ex-haust gases.
4)
ANALYSIS OF SAFETY IMPLICATIONS A reportability eval uation is in process and the results will be provided in an additional report.
5)
CORRECTIVE ACTION TO REEDY DEFICIENCY Any corrective actions necessary will be identified in an additional report.
6)
ADDITIONAL REPORTS lhis is an interim report, it is anticipated an additional report will be submitted no later than May 15, 1986.
GH0/jdw NR/SDR/8605/LTR