ML17262A938

Responds to NRC Bulletin 92-001, Failure of Thermo-Lag 330 Fire Barrier Sys to Maintain Cabling in Wide Cable Trays & Small Conduits Free from Fire Damage. Thermo-Lag Fire Barriers Not Utilized at Plant

ML17262A938
Person / Time
Site:	Ginna
Issue date:	07/29/1992
From:	Mecredy R ROCHESTER GAS & ELECTRIC CORP.
To:	Andrea Johnson NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM), Office of Nuclear Reactor Regulation
References
IEB-92-001, IEB-92-1, NUDOCS 9208070092
Download: ML17262A938 (6)

Text

~ACCELERATED DISTRIBUTION DEMONST$MTION SYSTEM REGULRTY INFORMATION DISTRZBUTIOtYSTEM (RIDE)

AfCESSE.ON NBR:9208070092 DOC.DATE: 92/07/29 NOTARIZED: YES DOCKET FQCgL:50-244 Robert Emmet Ginna Nuclear Plant, Unit 1, Rochester G 05000244 AUTH. NAME AUTHOR AFFILIATION MECREDY,R.C. Rochester Gas 6 Electric Corp.

RECIP.NAME RECIPIENT AFFILIATION JOHNSON,A.R. Project Directorate I-3

SUBJECT:

Responds to NRC Bulletin 92-001, "Failure of Thermo-Lag 330 R Fire Barrier Sys to Maintain Cabling in Wide Cable Trays 6 Small Conduits Free From Fire Damage." Thermo-Lag fire I barriers not utilized at plant.

D DISTRIBUTION CODE: IE49D COPIES RECEIVED:LTR ENCL LY SIZE:

TITLE: NRC Bulletin 92-001, Failure of Thermal- og 330 Fire Barrier Sys to M NOTES:License Exp date in accordance with 10CFR2,2.109(9/19/72). 05000244 /

RECIPIENT COPIES RECIPIENT COPIES ID CODE/NAME LTTR ENCL ID CODE/NAME LTTR ENCL D PDl-3 LA PD1-3 PD JOHNSONFA D INTERNAL: N SPLB NRR/PD3-1 $ i REG~LE 01 RES/EMEB RGNl ....FILE EXTERNAL: NRC PDR NSIC R

D D

D NOTE TO ALL "RIDS" RECIPIENTS:

PLEASE HELP US TO REDUCE WASTE! CONTACT THE DOCUMENT CONTROL DESK, ROOM Pl-37 (EXT. 20079) TO ELIMINATEYOUR NAME FROM DISIRIBUTION LIES FOR DOCUMENTS YOU DON'T NEED!

TOTAL NUMBER OF COPIES REQUIRED: LTTR ll ENCL

I I

I V

~nzzzs IIII// III I//////II///I

/Ig/I i/IIIIIIIIIII/

ROCHESTER GAS AND ELECTRIC CORPORATION 89 EAST AVENUE, ROCHESTER N. Y.

ZZ 14649-0001 ROBERT G MECREDY TELEPHONE Vice President ABER COOE T i 6 546-2700 Clnna Nudear Production July 29, 1992 U. S. Nuclear Regulatory Commission Document Control Desk Attn: Allen R. Johnson Project Directorate I-3 Washington, D.C. 20555

Subject:

Response to NRC Bulletin No. 92-01 Failure of Thermo-Lag 330 Fire Barrier System to Maintain Cabling in Wide Cable Trays and Small Conduits Free from Fire Damage R. E. Ginna Nuclear Power Plant Docket No. 50-244

Dear Mr. Johnson:

NRC Bulletin 92-01 dated June 24, 1992 requested a response within 30 days of receipt of the bulletin regarding use of either 1- or 3-hour pre-formed Thermo-Lag 330 fire barrier material. The requested actions and our response are identified below:

For those plants that use either 1- or 3- hour pre-formed Thermo-Lag 330 panels and conduit shapes, identify the areas of the plant which have Thermo-Lag 330 fire barrier material installed and determine the plant areas which use this material for protecting either small diameter conduit or wide trays (widths greater that 14 inches) that provide safe shutdown capability.

Response: RG&E has not used Thermo-Lag 330 fire barrier material at R.E. Ginna. RG&E has utilized the "HEMYC" .cable wrap systems, Insulco Incorporated, on specific electrical cables and/or trays in which these are located, for one-hour equivalent protection. These electrical circuits and plant locations are identified in RG&E's Alternative Shutdown System Report, which is part of the Fire Protection Program.

2 ~ In those plant areas in which Thermo-Lag fire barriers are used to protect wide cable trays, small conduits, or both, the licensee should implement, in accordance with plant proce-dures, the appropriate compensatory measures, such as fire watches, consistent with those which would be implemented by either the plant technical specification or the operating license for an inoperable fire barrier.

6r)

,92080700TtZ 920729';

-PDR ADOCK 0500024'4 8 ' PDR

r wif ~

l II QEg

"/

I

Response: This question is not applicable, since Thermo-Lag fire barriers have not been utilized.

3. Each licensee, within 30 days of receiving this bulletin, is required to provide a written notification stating whether has or does not have Thermo-Lag 330 fire barrier systems it installed in its facilities. Each licensee who has installed Thermo-Lag 330 fire barriers is required to inform the NRC, in writing, whether it has taken the above actions and is required to describe the measures being taken to ensure or restore fire barrier operability.

Response: This submittal satisfies the 30-day response requirement.

Fire barriers provided with the "HEMYC" one-hour protec-tion are operable and, therefore, no compensatory measures, described in 2 above, have been instituted.

Very truly yours, Robert C. Mec dy GAHi240 on h-'~ay Subscribed and swor of to before me 1992

"~'." ~, xc: 'r. Allen R. Johnson (Mail Project Directorate I-3 Stop 14D1) r"..- PHQhOA M. NOONE Washington, D.C. 20555 Notary Public, State otNew York

~ou'abtieotrr'WaYort, un~

-4 -9'f U.S. Nuclear Regulatory Commission Region I Commisarott Expiiec 475 Allendale Road King of Prussia, PA 19406 C U.S. NRC Ginna Senior Resident Inspector

4 ~

I ~

'f ~

'f

'4

'f P

If ff~ > II'g, ~ w

~ ~