ML17285B325

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Advises That Calculated Max Control Room Temp Re Station Blackout Will Be Provided by 900701
ML17285B325
Person / Time
Site: Columbia Energy Northwest icon.png
Issue date: 06/07/1990
From: Sorensen G
WASHINGTON PUBLIC POWER SUPPLY SYSTEM
To:
NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
GO2-90-098, GO2-90-98, NUDOCS 9006130260
Download: ML17285B325 (4)


Text

CCELERATED P> TRJBUTION DEMON~ TION SYSTEM REGULATORY INFORMATION DISTRIBUTION SYSTEM (RIDS)

ACCESSION NBR:9006130260 DOC.DATE: 90/06/07 NOTARIZED: NO DOCKET FACIL:50-397 WPPSS Nuclear Project, Unit 2, Washington Public Powe 05000397 AUTH. NAME AUTHOR AFF1LIATION SORENSEN,G.C. Washington Public Power Supply System RECIP.NAME RECIPIENT AFFILIATION Document Control Branch (Document Control Desk)

SUBJECT:

Advises that calculated max control room temp re station blackout will be provided by 900701.

DISTRIBUTION CODE: A050D TITLE: OR COPIES RECEIVED:LTR Submittal: Station Blackout (USI A-4 ENCL 0 SIZE:

10CFR50.63, MPA A-22

)

NOTES:

RECIPIENT COPIES RECIPIENT COPIES ID CODE/NAME LTTR ENCL ID CODE/NAME LTTR ENCL PD5 PD SAMWORTH,R INTERNAL: ACRS NRR PD1-4PM TAM NRR/DET/ESGB SD NRR/DST/SELB NRR D LBSD1 NRR/DST/SRXBSE RE ILE 01 EXTERNAL: LPDR NRC PDR NSIC 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 DISTRIBUTION LISTS FOR DOCUMENTS YOU DON'T NEEDI TOTAL NUMBER OF COPIES REQUIRED: LTTR 17 ENCL

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WASHINGTON PUBLIC POWER SUPPLY SYSTEM P.O. Box 968 ~ 3000 George Washington Way ~ Richland, Washington 99362 June 7, 1990 G02-90-098 Docket No. 50-397 U.S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, D.C. 20555 Gentlemen:

Subject:

NUCLEAR PLANT NO. 2, OPERATING LICENSE NPF-21 STATION BLACKOUT, ADDITIONAL INFORMATION

Reference:

1) Letter, G02-90-064, GC Sorensen (SS) to NRC same subject, dated March 30, 1990
2) Letter, G02-89-062, GC Sorensen (SS) to NRC "Response to Station Blackout Rule using HPCS Division III as Alternate AC Power", dated April 17, 1989 In Reference 1 we stated that additional information regarding control room heatup for a Station Blackout and the potential impact of a nitrogen tank failure on diesel operation would be provided by June 1, 1990. Preliminary results of the control room heatup analysis indicate that the control room temperature will remain significantly below 120 F provided certain heat loads are shed. The shedding of the loads is already provided for in plant procedures. The consultant's analysis is currently undergoing a Supply System review. By July 1, 1990 we will provide the calculated maximum control room temperature.

The analysis of the failure of the nitrogen tank on diesel operation is currently underway but will not be completed by June 1. We plan to submit the results of this analysis to the NRC by October 1, 1990. About this time we will also update our response to LER 89-01 which deals with this subject and was discussed in Reference 2.

Very truly yours, G. C. Sorensen, Manager Regulatory Programs cc: JB Martin - NRC RV NS Reynolds - BCP&R NRC Site Inspector - 901A DL Williams - BPA/399 RB Samworth - NRC 9006i30260 900607 ~r go5o 05000397 PDR P

ADOCK PDC t/0

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