beaver valley, unit 2, pressurizer weld overlay ... · attachent 1 to l-06-163 page i table i...

FENOCFirstEnergy Nuclear Operating Company

James H. Lash 724-682-5234Site Vice President Fax: 724-643-8069

November 20, 2006L-06-163

ATTN: Document Control DeskU. S. Nuclear Regulatory CommissionWashington, DC 20555-0001

Subject: Beaver Valley Power Station, Unit No. 2Docket No. 50-412, License No. NPF-73Pressurizer Weld Overlay Examination Report

By letter dated March 31, 2006 (L-06-038) and supplemented by letters dated August 8, 2006 (L-06-123), September 27, 2006 (L-06-142), and October 5, 2006 (L-06-146), the FirstEnergyNuclear Operating Company (FENOC) requested Nuclear Regulatory Commission (NRC)approval of a proposed alternative to American Society of Mechanical Engineers (ASME) CodeSection XI requirements, in support of weld overlay repairs for Beaver Valley Power Station(BVPS) Unit No. 2 pressurizer nozzles. The NRC provided verbal authorization to perform theweld overlay repairs during a teleconference on October 5, 2006.

During the Beaver Valley Unit No. 2 2R12 Refueling Outage, FENOC completed the plannedpressurizer structural weld overlay workscope, which included the application of full structuralweld overlays to the pressurizer spray nozzle, relief (PORV) nozzle, three safety nozzles, and

.,surge nozzle. The final weld overlay ultrasonic examinations were completed on November 6,2006.

Attachment 1, "Indications for Beaver Valley Unit 2 Pressurizer Weld Overlays", providesdetailed results of the initial ultrasonic inspections performed on the pressurizer nozzles. Theinitial inspection results for locations that were subsequently repaired are noted as "Pre-Repair".The following is a summary of the results:

Weld Identifications Number of IndicationsNozzle (DM/SS) Initial PDI Inspection Indication Assessment Summary

Safety A 2RCS*PRE21-103C / I Laminar Indication and I The laminar indication was acceptable, the2RCS-103-F01 Planar planar indication was unacceptable and was

removed in a repair excavation.

Safety B 2RCS*PRE21-102B / No Recordable Indications N/A2RCS-102-FOI

Safety C 2RCS*PRE21-101A / 2 Laminar Indications The two laminar indications were acceptable. No2RCS-101-FOI Repair performed.

PORV 2RCS*PRE21-107Z / I Laminar Indication The single laminar indication was acceptable. No2RCS-107-FO1 Repair performed.

Beaver Valley Power Station, Unit No. 2Pressurizer Weld Overlay Examination ReportL-06-163

NozzleWeld Identifictationis

(DIN.l/SS)Number of IndicationsInitial PDI Inspection Indication Assessment Summnary

Spray 2RCSIPRE21-202Z 1 4 Laminar Indications Tlhc four laminar indications were acceptable.2RCS-202-FOI Repair was performed in the area of indications

to correct a heat input issue,

Surge 2RCS*PRE21-84Z/ 3 Laminar Indications Single indication (42) and combined indications2RCS-84-F03 (42 & #3) exceed 7.5 sq. in. area and were

unacceptable andrequired repair.

As noted in the summary table above, weld repairs were performed on the Safety A, Spray, andSurge nozzle. overlays. (Note that the indications in the spray nozzle were acceptable but fellwithin the repair area needed to correct a heat input discrepancy).

Attachment I also provides detailed results of the final ultrasonic inspections performed on thepressurizer Safety A, Spray, and Surge nozzles following repair and are noted as "Post-Repair".The following is a summary of the post-repair results:

Weld Identifications Number of IndicationsNozzle (DM/SS) Post Repair Inspection Indication Assessment Summary

Safety A 2RCS*PRE21-103C/ No Recordable Indications in Only Original Indication I & Ia not located in2RCS-103-FOI repair area repair area exist. No recordable indications in the

repair area.

Spray 2RCS*PRE21I202Z/ 3 Laminar Indications The three laminar indications were acceptable.2RCS-202-FO I

Surge 2RCS*PRE21-84Z/2RCS-84-F03

No Recordable Indications inrepair area

Original Indication #1 and parts of Indication 9 2(2a and 2b) still exist. Indication #3 located inrepair area was removed. Remaining indications(Indicatioi N I and parts of Indication #2) wereacceotable.

Attachment 2 contains cross-sectional sketches showing the location and orientation of allindications, pre- and post-repair.

There are no regulatory commitments in this letter. If there are any questions or if additionalinformation is required, please contact Mr. Gregory A. Dunn, Manager FENOC Fleet Licensingat (330) 315-7243.

Sincerely,

H. Lash

Beaver Valley Power Station, Unit No. 2Pressurizer Weld Overlay Examination ReportL-06-163

Attachments:

1. Indications for Beaver Valley Unit 2 Pressurizer Weld Overlays.

2. Nozzle Weld Repair Areas.

cc: Mr. T. G. Colbum, NRR Senior Project ManagerMr. P. C. Cataldo, NRC Senior Resident InspectorMr. S. J. Collins, NRC Region I AdministratorMr. D. A. Allard, Director BRP/DEPMr. L. E. Ryan (BRP/DEP)

Attachent 1 to L-06-163Page I

Table Ilndinotiona foor Bet'*er V.11ey Unit 2 P-resurizer Weld Overlay,

TGE INDICATION DISPOSITION REPOOE.o-N • C=CMI. Ho-oOF CO•S OF AOtCRKNOS ID N EE •AfT R OF O OYUY OOOF M 20G OF FRICAtO N FRMOF CNOECUL#* FonSn TN HIEOEOTO VOERDt OF . OFE

ROSULE ER 500NG OF OCEREOAyt WOTO UM ER tCn~oTP UFC T R~E F eOCt VOFREOCEO MnaK 0As INCOCEtS FROM INDIAOTION RYE U4RERU

ene~fon onE noo~ n Sno~oo RFRCEE ~rOCftfOOfYaTa Olf 0•/-054 000% Redooftion On yNB-t3f14-0 I'tOSO3f14-2 Fnnopoatton int IWS-3O0 Anal, forIIN RER'AT•ORN Coonoaa. Innannin. Freenooon not., 05% of aaaumead fOtan

4 4 minontton Roan~nattoon undertlyngnaldt

RANe -1t-

o ý031"I •.. 16 ýo.

073_"

OCOUPToOA LY.Y.Y.0

QYYN oM a• .•=nobl=of .5 x~l0,63%ax

No saTT. toot

:•a•i IrKt•on

,..aon.CUtOaOOtflan

TA I,• pA-tA-n.U

ToOTEn A 0000000 Y0000Y0

t -C•T•• N.

fln owS ontY OtT' OnY0U 0,6" TOA YAA TOO WA 20Alootadea oof WA E0A oTmot•r

TnatoOAntpnnTOpa tan O,.OsnsTOA YE

0¢ P •,0 t1 00-03s 040" ott nt W-NA NA WA* W'A Wae¢A(~~~~) ttetdmt•pt•I NA ATE

Yn011o OTato E- =O

-q~t T .TOT no.O aa

OnnoAfttoo n~t Coo Ott ott TOO 00 t' A 0AU,2U Rn Ofltafn~ YO AT2aot to.not AtU~taT~~

1EACTY& 0-noC ýanot

to Coo 00W A 000 00 Ot 000 A WA f~t WA Tafnfttfla.am~t Et.a-tfTOt T

JTCTAOU N-aE - to ooaonAd Tf~n 0 AAO f0 00 00' A tO A WO ~ t WA A~fEAtA (r .- ) on nt

Tan~ O~f-On~tnonU~ofoATOC CA C0 oo~N.o~

0O1.000 -AannnaAa(1-W-1 - 1

535" 0295" •q/A NYA ."A OAEt0Oonanozaooa Otonat tan

N:A YES

Attachment I t. L4-6-163

Page 2Tf . e I

lndication, for B ....r V,1ev Unit 2 Presurizer Weld O-'ela"

-LUDW I

P O R 0AU E INDICATION DISPOSITION REP"

- NEVS 0EPTC FROM OUTSIDE LAEN OF OF c rcu,. - N0 0 0EIn N0 040 - N FROM OF MCEOS N R HOTOF O O0 - OF1AREC

INGAFO YStR(A I-oE. FROM 0 =N 0, IF05N.RM-.)IIO n - POWl -1 B4-31• .10% RedducionI. IW8314-, R,115614- P-o tion in I ~B•4 Ev-l. to,

EImin-TloN EC.-,IOO underlying 0.0l 11

0f 0040 0531" 444 5355 040" 44 " lIS" NMA NIA N/A N/ CO• Satly 000pbr) Otee m• 500 I/ISI04 0NA YSN

40421.0 0000 00 04000 40000 40040 440400 4No00 0000 No044 NIX NIX NIX 0A NIX NIA NIA 01 0000 A.~E.- -. lot Il un

No N .N rNo NX NItIX1 NIIX:E 0

- 1050,000 00500,

40100400 o•sw~a 10400004000000 0 Maw000010r p40• stll•te,04 50A10

11- 0040040404440

A1CN31TTB1 04T0000040400P0RV 001 0000" 254045" I IloO4 lIT 065" 405 111l1 0 000 2" or .v0 a0.l4,w0hl Olooo oo•odlOeX 000001. STO 1110101 NIX 100

All0 4 A 04 -.1aA 00

L-~~•o It4 68 1

0".6" o ýA-El Te

ACEPTA-E

N -dK:4000040500.000040000. 001050 00000005O00~

N/A YEs 40 540 0500,4

050.440 4000040544000.0.00-FEFT- N.

0000 •001 OCtOaO Z1050 4001T000000404000

2 ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ 'fy M-400045 0 05 55 o 0S010-TOI 10 000400 001401

AuTOhmonl I to L-06-163Pqge 3

Tnble Ihndi-ttio-n, o B,,,-,, Val1ey Unit 2 Presurizer Weld O-erly,

IN .- ION

CGOAV A INDICATION DISPOSITION R-AIRD•FROM -•E -• OF INPO=ONFOFM CIRCusI. PýNRQ E-TF tOFA N

M-R- OON TOIC N RE SURFACE 00 CR000 N FROM OF OTIO N FT H00000SF .O ..RIOF OF AR.AMADNGE OF O=ry .ER RRE EC MARE (A .- ES FROM 0 IND-AN = .' IN UMINA.

MoN - o1 SW-k~qh) RJEFE-RFSCE POINT LOCATION OF T0ble rwN.RR14.R <100 Redution In IWI.3S-. M 35tR4.2 N FoogCtio n in IWO-S 0 E-R 00.ISoCATION C0.r0ge In ..erSO. . 9 viC oUA--. .. r 2-5% of ... asum

E_ -i~tin E -minto .- der.yin -W

ACCOOTABLE ACCEPTABCLE: La000 IOMR005 0 , 000

SA E05SC4 O-T (OI IR 0090. NA 00 FOR 00000.A OCE0T0 500 m m /A

ACCFTF: No

- -CT*S0E. NN.A IT.. C0 P- T"AAC T 1* 0* 1 1 RTROMI 0000500

=ZW 00*005RO

ONOCTTT*LNN TERNE0000

IAII O O100T 0 00 1*5*0*0* AMUS 5. 000 1 E

0500T . 00 ..

TOCOTL 271 .12RI*1- "A010

I .. .1- 0I 06}* o" 5

AOOARR*R0*R

CO -000•r•

OOEN*OOA 0*0000*0N•A -IC I R L1

TT'RN-ORRRI0I *0100000 IOTA ITO

US UTR 00*00*00 T0*001,017010 1,RO 293%.1 N.. P-050R) 1*0 WE1 &N

•R. *00*0AC0*E0TALE NO

P 00RM0a00TWr ITRE

00*000*00050 CoT. 10%500 ORE0000 ITRI 00*005*0 OR 000000000 0,. 14,1N.00..,00 . 00IR tI 01- N 0.1 NIA ~ o10U00 0000.010 *1A000 EOlICO

0R

Alcho Io 1. 1-,6-163Page 4

Tbl. IIndictions for B-.. V,1ley Unit 2 Pre..r.izer WdV.I O. rly,

000030400M .- GEP00 F 0 o1n0 C *V010 e INDICATION DISPOSITION R0

MOLE I ANIGOýF - Y- NUMBERE WAFA- TOK FA W0C-O -MM F .--. . -. RFA

04 *L0Y IN00009ON 50000000 ON 00 KR k-C MoROK ( R(A INCOE PROMO I N Lo4ATION M, T0ble. 0004 "-4 -14% Reduction I 0w.4510-2 -4W-.-14-2 P-opogotImO in MW.-O&bO Ev0l.400MEA40 ORN0 Co.r-g. 1n40r010e Pre4e0000e oIter 45% A 7 .0f ..R4ai.ton.~o E4.mi0.20n und.07y0ng .Id0

24 00) 010 I70 40) 69 0 591 01A N/X NMA 0)A 0..a nt0SI 0NA l

1- 021. AA 11-PA NIA 'N,

•URGE~A -OtACoC-E2= ~0,00,\) 000T00014sta0l4002)0 POOS)E 04)0o4T 0.20N

A1T.UE 101.TBL NNO

I0 1 357% - - E

0000 070 )0. 04 04_ $0 5700 70" 0 06) )000 )0ova S4S,40)00. 000040)40.=021-A

044.04Or0 014)4.001 0)000).00 0)00'02A

A 0- 00 040

A004 t'0404.044 I,.o0 I44 0

0.440)00~ ~~~~~~~~~ 0I0-029 0 44 0 07A00020049*1 00)10040 000040) 00000) 00201000-7000041, 24 04 004 ).40 0)40 0004"=004 7004)0101 )0

400M 60004000440))

.000flO. 4.0. 0000620 z

All- 1-o 400450 70400 1-404)15%40A00400,00)04 004000444 00)0000 00000000004 000400000)

0 .040 079 27 0)1 .0 00 00 0400 4)000.00 0S44

)O.4S)000440040 0004N)420)0 00I0

Attachen t I . I,-OY-163 Table IPoge 5 Indicotion. for B_ r Valley Unit 2 Presrizero Weld Oerrlas

NOaNo REMARFS

WnCLUOD

INDICATION DISPOSITION M_:,0

00 0 0.-.- FROM 0I E L OF OF FROM N I00005 OF Rem OF 00I004001.04 000 0 000.0004 4.000o 0400401100 t'rEe 00110C0 00 000111 OF 00101T• O00141090 ( IOO 000 14010 00101 1010

000 110•0•011 00, I.E REFEP.CEMARK (A0 0NCHE OM 0010 OF T104- -A04100 0% 0.04401.0 1 -2 00415-0 P0 ti010 .INDICATIN0 000041 P00 140040Co~g serlceo p,.reolro. 00t0025% 0 . 0.s0rr5 t14

NOTES .ABBREVIATIONSRiC - Reduction n CoveraoeDM. -Nozle/Sae 6nd Weld

SS- Safe End/NPpe Weld

Attachment 2 to L-06-163Page 1

Safety A - Indication 1

BEAVERSAFETY

VALLEY 2NOZZLE A

INDICATIONS 1 & IAEVALUATED AT 180° PROFILE

.220 -


Safety A - Indication 1 (Cont'd)

Measurd ODSurface Length,

Ind. #1 = 0.9"


Safety A - Indication 2 (Removed during Repair)

- Measured ODSurface LengthInd. #2 = 1 .2"



BEAVERSAFETY

VALLEYNOZZLE

INDICATIONS 2E & 2FEVALUATED AT 0° PROFILE

....... ..... .Z


Safety C - Indication 1

BEAVER VALLEY UNIT 2WELD OVERLAY

PRESSURIZER SAFETY NOZZLE C

INDICATION 1EVALUATED AT 900 PROFILE

INDICATION I


Safety C - Indication 2

BEAVER VALLEY UNIT RWELD OVERLAY

PRESSURIZER SAFETY NOZZLE C

INIDICATION PEVALUATED AT 0* PROFILE

INDICATION


Relief- Indication 1

R4.26

Beaver Valley Unit 2PORV Nozzle1800 Profile


Sorav. Pre-Renair - Indications 1 & 2

BEAVERSPRAY

VALLEY 2NFIZZLE

INDICATION 1 (0-)8 INDICATION IA (45*)

EVALUATED AT 180° PROFILE

INDICATION 2 (0°)INDICATION 2A (45°)



Spray, Pre-Repair - Indications 3 & 4

BEAVERSPRAY

VALLEY 2NOZZLE

INDICATION 3 (0°)INDICATION 3A (45°)


INDICATIONS 4 (0)INDICATION 4A (45°)


Attachment 2 to L-06-163Page I I

Spray, Post-Repair- Indication I

Measured Length on ODSurface for Ind. #1A = 3.8"


Sprav. Post-ReDair - Indication 2

Measured Length on 00Surface for nd. #2A = 1.3"


Spray, Post-Repair - Indication 3

Measured Length on 00Surface for Ind. #3A = 1.95"


Surge, Pre-Repair - Indication 1

BEAVER:SURGE VALLEYNOIZZLE

2

INDICATION IEVALUATED AT G' PROFILE


Surge, Pre-Repair - Indications 2 & 3

BEAVER VALLEYSURGE NOZZLE

INDICATIONS 2 & 3EVALUATED AT 270' PROFILE

p

5.10

1.1 -1420

-1

"t-..m

=7IDAt~ VOLi .09rmM I


Surge, Post-Repair - Indication 1

4


Surge, Post-Repair - Indications 2A & 2B

DEAVER VALLEY 2SURGE NOZZLE

INDICATIONS 2A & 2BEVALUATED AT 270 PROFILE

7

SURGL e7U°

beaver valley, unit 2, pressurizer weld overlay ... · attachent 1 to l-06-163 page i table i...

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