ML17261B150

Submits Update on Util Plans to Provide Appropriate Ventilation to Intermediate Bldg Clean Side,Per Violation Noted in Insp Rept 50-244/88-26.Extensive Program to Manually Close All External Openings Implemented

ML17261B150
Person / Time
Site:	Ginna
Issue date:	08/20/1990
From:	Mecredy R ROCHESTER GAS & ELECTRIC CORP.
To:	Martin T NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
References
NUDOCS 9009110017
Download: ML17261B150 (6)

Text

CCELERATED DISTRIBUTION DEMONSTRATION SYSTEM REGULATORY INFORMATION DISTRIBUTION SYSTEM (RIDS)

I ESSION NBR:9009110017 DOC.DATE: 90/08/20 NOTARIZED: NO DOCKET FACIL:50-244 Robert Emmet Ginna Nuclear Plant, Unit 1, Rochester G 05000244 AUTH. NAME AUTHOR AFFILIATION MECREDY,R.C. Rochester Gas & Electric Corp.

RECIP.NAME RECIPIENT AFFILIATION MARTIN,T.T. Region 1 (Post 820201)

SUBJECT:

Updates plans to provide ventilation to intermediate bldg clean side,per violations noted in Insp Rept 50-244/88-26.

DISTRIBUTION CODE: IE01D COPIES RECEIVED:LTR ENCL SIZE: D TITLE: General (50 Dkt)-Insp Rept/Notice of Violation Response S

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 PD1-3 PD JOHNSON,A D INTERNAL: AEOD AEOD/DEIIB D AEOD/TPAD DEDRO NRR MORISSEAU,D NRR/DLPQ/LPEB10 NRR/DREP/PEPB9D NRR SHANKMAN,S NRR/DOEA DIR NRR/DRIS/DIR ll NRR/DST/DIR 8E2 NRR/PMAS/I LRB12 NUDOCS-ABSTRACT OE DIR OGC/HDS2 iRE~I-5 02 RGN1 FILE 01 EXTERNAL: NRC PDR NSIC D

D D

NOTE TO ALL "RIDS" RECIPIENTS:

PLEASE HELP US TO REDUCE WASTE! CONTACT THE DOCUMENT CONTROL DESK, ROOM P 1-37 (EXT. 20079) TO ELIMINATEYOUR NAME FROiVI DISTRIBUTION LISTS FOR DOCUMENTS YOU DON'T NEED!

TAL NUMBER OF COPIES REQUIRED: LTTR 21 ENCL ~g

anaL asase ROCHESTER GAS AND ELECTRIC CORPORATION ~ 89 EAST AVENUE, ROCHESTER N.K 14649-0001 ROBERT C. htECREOY TES.EPSSOSSE V<<e Psesideni AREA coDE 716 546'2700 Cinna Nuefeas Psnducunn August 20, 1990 Mr. Thomas T. Martin Regional Administrator U.S. Nuclear Regulatory Commission Region 1 475 Allendale Road King of Prussia, PA 19406

Subject:

NRC Inspection Report No. 50-244/88-26 Notice of Violation R.E. Ginna Nuclear Power Plant Docket No. 50-244

Reference:

Letter from R.C. Mecredy (RG&E) to W.T. Russell (NRC) dated June 22, 1989.

Dear Mr. Martin:

The purpose of this letter is to update you on our plans to provide appropriate ventilation to the Intermediate Building clean side. We have implemented an extensive program to manually close all external openings in the building for freeze protection. This action is triggered by a minimum outdoor temperature forecast or reading of 20'F, or, by calendar, i.e.

November 1, whichever comes first. Via many temperature readings located throughout the building, we watch and react to changes as needed. This approach has proven effective in preventing any potential freezing conditions which could impact plant equipment.

Recognizing that manual methods may not always provide complete assurance, we have completed preliminary engineering on more extensive modifications that would automate outside supply fans and alarm low temperatures. The proposed modifications would require replacing or adding louvers, fans, ductwork, fire dampers, covers, alarms, and associated structural and electrical items. This corrective action will enhance the ventilation capabilities for this building to reduce both hot and cold spots.

90091i001.7 P00g20 F'DR ADOCK 05000244 9 PDC

Cl The proposed Intermediate Building modifications require ventilating supply air to be drawn from the Turbine Building during the winter months. In order to simultaneously provide proper make-up air for the Turbine Building, a modification to this ventilation system is required also. Preliminary engineering has been completed, and we are planning to resolve some existing ventilation problems in this building also.

The engineering and installation of these modifications are required to be integrated since the air flows in one building will be dependent on the air flows in the other building. These modifications are extensive but will resolve the ventilation problems.

Completion is presently scheduled for the fourth quarter of 1993.

Considering the inter-relationships of air movement between buildings and the extent of the work required, we believe this schedule is realistic. In the meantime, the manually controlled program for ventilation openings will be maintained.

Very truly yours,

',r~~ CQ~

Robert C. Mecred xc: Mr. Allen R. Johnson (Mail Stop 14D1)

Project Directorate I-3 Washington, D.C. 20555 U.S. Nuclear Regulatory Commission Region I 475 Allendale Road King of Prussia, PA 19406 Ginna Senior Resident Inspector

0