ML17228A503

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Forwards Fracture Mechanics Analysis of Pressurizer Instrument Nozzle Flaws
ML17228A503
Person / Time
Site: Saint Lucie NextEra Energy icon.png
Issue date: 03/28/1994
From: Sager D
FLORIDA POWER & LIGHT CO.
To:
NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
Shared Package
ML17228A504 List:
References
L-94-074, L-94-74, NUDOCS 9403300143
Download: ML17228A503 (5)


Text

..ACCELERATED DISTRIBUTION DEMONSTRATION SYSTEM REGULATORY INFORMATION DISTRIBUTION SYSTEM (RIDS)

ACCESSION NBR:9403300143 DOC.DATE: 94/03/28 NOTARXZED: NO DOCKET FACIL:50-389 St. Lucie Plant, Unit 2, Florida Power 6 Light Co.

05000389 AUTH.NAME AUTHOR AFFILIATION SAGER,D.A.

Florida Power S Light Co.

RECIP.NAME RECIPIENT AFFILXATION Document Control Branch (Document Control Desk)

R

SUBJECT:

Forwards "Fracture Mechanics Analysis of Pressurizer Instrument Nozzle Flaws."

DISTRIBUTION CODE: A001D COPXES RECEIVED:LTR ENCL SIZE:

TITLE: OR Submittal:

General Distribution NOTES:

RECIPIENT ID CODE/NAME PD2-2 LA NORRIS,J INTERNAL: ACRS NRR/DORS/OTSB NRR/DRPW NRR/DSSA/SRXB OCJ~EDCB gREG~IihE 0 1 EXTERNAL: NRC PDR COPIES LTTR ENCL 1

1 2

2 6

6 1

1 1

1 1

1 1

0 1

1 1

1 RECIPXENT ID CODE/NAME PD2-2 PD NRR/DE/EELB NRR/DRCH/HICB NRR/DSSA/SPLB NUDOCS-ABSTRACT OGC/HDS3 NSIC COPIES LTTR ENCL 1

1 1

1 1

1 1

1 1

1 1

0 1

1 D

D D

NOTE TO ALL"RIDS" RECIPIENTS:

D D

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 NEED!

TOTAL NUMBER OF COPIES REQUIRED:

LTTR 22 ENCL 20

er

~

BAR 2 8 1994 L-94-074 10 CFR 50.55a U.

S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, D.

C.

20555 RE:

St. Lucie Unit 2 Docket No. 50-389 Fracture Mechanics Analysis of Pressurizer Instrument Nozzle Flaws Pursuant to 10 CFR 50.55a(a)(3),

Florida Power and Light Company requests approval of the enclosed Fracture Mechanics Analysis for the Unit 2 pressurizer instrument nozzle welds.

The 1989 edition of the ASME Boiler and Pressure Vessel Code Section XI, IWB-3610(e) requires the licensee to submit evaluation procedures to the regulatory authority having jurisdiction for approval.

In order to prevent delay of entry into operational Mode 4,

approval is requested by April 4, 1994.

A drawing of the repair weld configuration (Enclosure

1) and a copy of the Fracture Mechanics Analysis for the Unit 2 pressurizer instrument nozzle welds (Enclosure 2) are enclosed.

The report uses the methods of ASME Section XI Appendix A and conservative inputs and assumptions to conclude that the Unit 2 Pressurizer safety margins will be conservatively satisfied for the next operating cycle.

Please contact us if there are any questions about this submittal.

Very truly yours, W~~~~ go~

D. A. Sager Vice President St. Lucie Plant DAS/GRM/kw Enclosures (2) cc:

Stewart D. Ebneter, Regional Administrator, Region II, USNRC Senior Resident Inspector, USNRC, St. Lucie Plant DAS/PSL 81093-94 9403300>e3 9

PDR ADOCK 05000389 P

PDR an FPL Group company

P II g

I IODIFIED UPPER PRE5SURIZER NOZZLE DETAI HEAD VASE METAL l.NGDMEL PAD (r so)

NOZZLE, P05l ULATED CRAC.K NO ZOWIE

~ ATTACHHB)T WELD NOZZLE ZNGOMEL C 90 SRF'E END STAINLESS STEEL (3 lloL)

HUtTCP WE'LD CLADDIM6 ENCLOSURE l.