ML17285A889

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Provides Addl Info Re Low Pressure Turbine Changeout/Insp Schedule,Including Critical Crack Size as Calculated by Westinghouse
ML17285A889
Person / Time
Site: Columbia Energy Northwest icon.png
Issue date: 12/14/1989
From: Sorensen G
WASHINGTON PUBLIC POWER SUPPLY SYSTEM
To:
NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
GO2-89-225, NUDOCS 8912190029
Download: ML17285A889 (4)


Text

ACCELERATED DTSTIGBUTION DEMONS TION SYSTEM REGULATORY INFORMATION DISTRIBUTION SYSTEM (RXDS)

ACCESSION NBR:8912190029 DOC.DATE: 89/12/14 NOTARIZED: NO DOCKET,5 FACIL:50-397 WPPSS Nuclear Project, Unit 2, Washington Public Powe 05000397 AUTH. NAME AUTHOR AFFILIATION SORENSEN,G.C. Washington Public Power Supply System RECIP.NAME RECIPXENT AFFILIATXON Document Control Branch (Document Control Desk)

SUBJECT:

Submits addi info re low pressure turbine changeout/insp schedule.

DISTRIBUTION CODE'001D 'OPIES RECEIVED'LTR &ENCL TITLE: OR Submittal: General Distribution 8 SIZE:.

NOTES:

RECIPIENT COPIES RECXPIENT COPIES ID CODE/NAME LTTR ENCL ID CODE/NAME LTTR ENQL PD5 LA 1 PD5 PD 1 SAMWORTH,R 5 INTERNAL: ACRS NRR/DOEA/OTSB11 NRR/DST/SELB 8D 6

1 1

NRR/DST 'E2 NRR/DET/ECMB 9H NRR/DST/SICB 7E NRR/DST/SRXB 8E 1 A NUDOCS-ABSTRACT

+36MB 1 0 OGC/HDS2 1 REG FILE 01 1 RES/DSIR/EIB ~0 EXTERNAL: LPDR NRC PDR NSIC NOTE TO ALL "RIDS" RECIPIENTS:

PLEASE HELP, US TO REDUCE W t NTACT THE.DOCUMENT CONTROL DESK, ROOM Pl-37 (EXT. 20079) TO ELIMINA OUR NAME FROM DISIRIBUTION LISTS FOR DOCUMENTS YOU DON'T NEEDI TOTAL NUMBER OF COPIES REQUIRED: LTTR 27 ENCL gl

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j I a~i WASHINGTON PUBLIC POWER SUPPLY SYSTEM P.O. Box 968 ~ 3000 George Washington Way ~ Richland, Washington 99352 December 14, 1989 G02-89-225 Docket No. 50-397 U. S. Nuclear Regulatory Commission Attn: Docume'nt Control Desk Washington, D.C. 20555 Gentlemen:

Subject:

NUCLEAR PLANT NO. 2, OPERATING LICENSE NPF-21 LOW PRESSURE TURBINE CHANGEOUT/INSPECTION SCHEDULE, ADDITIONAL INFORMATION

Reference:

Letter, G02-89-210, GC Sorensen (SS) to NRC same subject, dated November 21, 1989 The e

reference provided 'mation with regard to the inspection interval

-2 ¹1 Low Pressure information p

between Messrs R. Samworth and Turbine (LP ¹1). As requested in for a hone J. Tsao (NRR) and J D b 11 f 1989 th e ollowing additional information is provided.

The critical crack size 1 1 tdb e t' (LP ¹1, Disc ¹1 y W es ing ouse is 2.983 inches.

~ The 34.32 month inspection is based on 50 percent of interval for LP ¹1, documented in the reference, the amount of time for the 0.063 discovered on LP ¹1 inch crack critical crack size. during the spring 1987 outage r to age, too grow t one half the Very truly yours, G. C. Sorensen, Manager Regulatory Programs PLP/bk cc: JB Martin - NRC Rv NS Reynolds - BCP8R RB Samworth - NRC DL Williams - BPA/399 NRC Site Inspector -

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( 8912190029 S9i214 ito PDR ADOCK 05000397 9 PDC

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