ML12143A135

North Anna Power Station Unit 1, NDE Results for Steam Generator Hot Leg Nozzle Full Structural Weld Overlays. Part 1 of 2

ML12143A135
Person / Time
Site:	North Anna
Issue date:	05/08/2012
From:	Virginia Electric & Power Co (VEPCO)
To:	Office of Nuclear Reactor Regulation
References
12-326
Download: ML12143A135 (50)

Text

Serial No.12-326 Docket No. 50-338 ATTACHMENT NDE Results for Steam Generator Hot Leg Nozzle Full Structural Weld Overlays North Anna Power Station Unit 1 Virginia Electric and Power Company (Dominion) 7 Serial No.12-326 Docket No. 50-338 A Steam, Generator Hot Leg Stn clural lItegrity Associates PHASED ARRAY ULTRASONIC EXAMINATION RECORD Customer:

Welding Servce= Inc. / Dominion Examination Data Sheet No.: NAPS-SG-A-FSWOL Calibration Data Sheet No.: See Comments Section Below Exam Start: 04/14/12 -1600 Exam Finish: 04/15/12 -1515 Plant: I North Anna 1Unit: I 1 lProcedure No.: SI-UT-149 Revision:14 Examination Scans Performed Yes No Component:

DWG # 11715-WMKS-RC-E-1A.2

-Steam Generator A Inlet Nozzle FSWOL (1) Axial (Facing Downstream) 0 []Component Configuration:

Nozzle-to-Safe End Weld No: Weld N-SE29IN-Summary N1.R1.15.003 (2) Axial (Facing Upstream) 0 [E]Coverage: (See below for coverage details) Limitations:

See Reported Conditons (3) Circumferential (Clockwise)

[ El Component Zero X= TDC, Y= +0.35" Up stream from Examination Surface: OD Surface (4) Circumferential (Counterclockwise)

Datum Locations:

Nozzle-to-Butter Interface I S DM Weld Width: 1.62" WOL Diameter:

42" WOL Temperature:

78°F Examination Angles & Scan Sensitivity Data File Names Axial 0" Axial 180" Circ 0" Circ 180" NAPS-SG-A-FSWOL-Axial Osk -3.5 to3.8 -2 to 35 NAPS-SG-A-FSWOL-Circ 0sk 2.7 to -5.3 -2 to 351 -10"-10*/40dB

-10*-10"140dB N/A N/A NAPS-SG-A-FSWOL-Axial 0sk -3.5 to3.8 33 to 69 NAPS-SG-A-FSWOL-Circ Osk 2.7 to -5.3 33 to 61_1 NAPS-SG-A-FSWOL-Axial 0k -3.5 to3.8 68 to 102 NAPS-SG-A-FSWOL-Circ Osk 2.7 to -5.3 66 to 1021 25"-75"/43dB 251-75"143dB 25"-65"!48dB 25"-65"/48dB NAPS-SG-A-FSWOL-Axial Osk -3.5 to3.8 100 to 135 NAPS-SG-A-FSWOL-Circ Osk 2.7 to -5.3 100 to 131--NAPS-SG-A-FSWOL-Axial 180sk 1.2 to-6 -2 to 35 NAPS-SG-A-FSWOL-Circ 180sk 2.7 to -5.3 -2 to 35 NAPS-SG-A-FSWOL-Axial 180sk 1.2 to-6 -2 to 15 NAPS-SG-A-FSWOL-Circ 180sk 2.7 to -5.3 33 to 68 NAPS-SG-A-FSWOL-Axial 180sk 1.2 to-5 33 to 68 NAPS-SG-A-FSWOL-Ch'c 180sk 2.7 to -5.3 66 to 102 NAPS-SG-A-FSWOL-Axial 180sk 1.2 to-6 66 to 102_1 NAPS-SG-A-FSWOL-Circ 180sk 2.7 to -5.3100 to 1dB NAPS-SG-A-FSWOL-Axial 180sk 1.2 to-5 100 to 131.75 Comments: During the examinations, six (6) flaw indications were detected; four (4) Weld Overlay (WOL) planar flaws, one (1) WOL laminar flaws, and one (1) Original Weld I Butter Material (WBM) planar flaw (existing fabrication flaw). Four (4) of the five (5) WOL flaws are located outside of the WOL examination volume. All five (5)WOL flaws are acceptable in accordance with ASME Section XI, IWB-3514 and the additional requirements of Relief Request N-14-CMP-001.

The WBM planar flaw is a pre-existing flaw outside the examination volume and therefore is acceptable to the requirements of the NAPS Relief Request See the IWB-3514 flaw characterization and evaluation on the following pages.Examination Coverage: Examinations achieved 90.5% coverage of the required volume of the Weld Overlay material examination volume for Laminar Flaws.Examinations achieved 97.7% coverage of the required volume of the Weld Overlay material examination volume for Planar Flaws.Examinations achieved 99.6% coverage of the required volume of the PSI -ISI examination volume.Examinations achieved 100% coverage of the susceptible material within the examination PSI -ISI examination volume.The applicable Calibration Data Sheets are listed below: NAPS SGA / C -WOL -0 AXIAL; NAPS SGA / C -WOL -180 AXIAL NAPS SGA / C -WOL -0 CIRC; NAPS SGA I C -WOL -180 CIRC Analysis: Reviewer: Level: Rr Date: Oj/2s//z Level: Date: Page of 11 Dominion: ANII: Date: Date: -"

Structural Integrity Associates PHASED ARRAY ULTRASONIC EXAMINATION RECORD Customer:lWelding Services Inc. / Dominion Examination Data Sheet No.:INAPS-SG-A-FSWOL Examination Coverage Calculations Component ID: NAPS -SG -A Weld Overlft AcMe==c Examination Volume.- Laminar Flaw Axial Toward Nozzle TtalAe Cored Area Percent 1195 1081 905 Axial TowardSafe End Total&Ae Covered Area Percent 1195 1081 905 Circumferential CW I CCW NIA Weld Overlay Accepnce Examination Volume -Planar Flaws Yaqt Weigohed Coverae 0 50 45 2 Vi W Waed Coveraoe 0 50 45 2 Total: 9D.5 Axial Toward Nozzle Axial TowardSafe End Circumferential CW I CCW Total Area 11.95 11 95 To11 9e5 11 95 Covered Area 11.95 Covered Are 11 95 Covered Area 11 41 Percent 100.0 Percent 1000 Percen 95 5 1--a. -Ipal VlgUFUH Axial Toward Nozzle TIal Area 696 Axial TowardSafe End Ttl Ae 696 Circumferential CW I CCW Total Area 696 Vti~t Weighted Coverage 015 25.0 WegtWeiohted Covgeae 0 25 25 0 We WVeihted Qmoveag 025 47 7 Total: 97.7 Ai-hl Jg e We ed Coverage 025 247 f _l VW ed oerage 025 249 Weight Weited Coveraoe 0.25 500 Total: 99.6 Covred Area 6 87 Coveed Area 6,93 C69red Area 696 987 Percent 99 6 Percen1 100.0 Page 2 of 11 e Structural Integrity Associates PHASED ARRAY ULTRASONIC EXAMINATION RECORD Customer:

Welding Services Inc. I Dominion lExamination Data Sheet No.: NAPS-SG-A-FSWOL WOL Planar Flaw Comparison to Acceptance Standards ComponentlD:

NAPS SG-A ASME Section XI 2004 Edition PIB-3514 Table 3514-2 (PSI)Flaw (S) Depth Depth Flaw Upper (OD) Subsurface Flaw Flaw Flaw Flaw 00 to Top 00 to Bottom Thru-Wall Component Acceptance Flaw Flaw Flaw Boundary Material Flaw Flaw No. 5m EWnd Lnnh of Flaw ofFlw 2a Thickn in TI.ickn i a fl An Proximily IM all An 1 06 140 06 07 010 4 10 156 005 0.04 321 Subsuface Austenitic 004 321%2 2.8 3.6 080 1,21 132 011 4 10 1.56 006 0.07 3153 Subsutface Austenitic 0.07 353%3 380 560 180 088 1 12 024 4 10 156 012 007 769 Subsurface Auslenitic 007 769%4 1258 13100 520 061 079 018 4 10 1 56 009 002 5 77 Subsurface Austenitic 0 02 5 77%Note") DM Weld Tr (nominal thickness)

Noteu Thickness applicable for flaw acceptance:

Reliant upon the nominal WOL thickness above the DM weld Code Allowable 8 34%843%843%828%Subsurface Flaw Only Y-m/ Rasu 1 Acceptable I Acceptable 1 Acceptable 1 Acceptable WOL Laminar Flaw Comparison to Acceptance Standards Component ID: NAPS SG-A Relief Reouest Acceetance Standards Flaw Flaw Flaw Flaw Volume ASME Linear Laminar Obstructed Flaw Length('I Length0) Flaw Width 1 2 1 Widthr 2 l Flaw Flaw Flaw Obstructed WOL Code Dimension Area Volume Nol. SWni Wn Length 51w~j Wj Width t 2 Areet? Dkiakho by..Flaw Thicknes 17.5 (n 1 I220 in) (19.76 Win 18 2 7 LL i~n'5 6280 6440 160 -277 -249 028 0,45 14, 001 156 Accept Accept Accept Accept Total Total Flaw Flaw Area Volume Flaw #1 Postulated flaw has 2a dimension of 0 16" (maximum) owing to its proximity to the original material interface Note il The length axis of the laminar flaw is usually parallel to the direction of welding Note 121 The width axis of the laminar flaw is usually perpendicular to the direction of welding WOL Postulated Radial Flaw Obstructed by Laminar Flaws ASME Section Xl 2004 Edition IWB-3514 Table 3514-2 (PSI)Flaw Subsurface Laminar (S) Depth Depth Flaw Upper (OD) Subsurface Code Flaw Flaw Flaw Flaw Flaw OD to Top O to Bottom Thru-Wall Component Acceptance Flaw Flaw Flaw Boundary Material Flaw Flaw Allowable Only No: 5Wn Wad ng of Flaw of Flwa ?AI omiil " Thicime a M WNf PE oxmf i y aIOl a." An Y-Mn Rawl 5 6280 6440 160 144 156 012 410 156 006 004 385 Subsurface Austenitic 004 385% 840% 1 Acceptable Note The Flaw Through-Wall (2a) dimension for Flaw #1.0 12' is the distance from the bottom of the laminar flaws to the original material interface)

This represents the maximum postulated flaw through-wall dimension Note"'1 DM Weld T, (nominal thickness)

Notern Thickness applicable for lfaw acceptance Reliant upon the nominal WOL Ihiciness above the DM weld Page 3 of 11 U Structural Integrity Associates Weld and Base Material Planar Flaw Summary Component ID: NAPS SG-A IS) Depth Depth Flaw Component Overlaid Flaw Flaw Flaw Flaw Flaw 00 to Top 00 to Bottom Thru-Wall Base Material Component Flaw Flaw Flaw Boundary Material Flaw Flaw Kio. S= End Lengtl of Fla ofLIw 2a Ihickn Thickness a all an P[oniy I= all AA 6 94-6 954 0,80 2.63 2.77 0,14 4 10 566 007 009 1-24 Subsurface Austenitic 0.09 124%6a 95.0 96.0 1.00 260 2.95 0.35 4.10 5.66 018 0.18 309 Subsurface Austenitic 018 3.09%Flaw Indications

1. 6 and #6a originate from the same reflector, but are detected from opposite axial scan directions Flaw indications

1. 6 and #6a are outside of the required examination volume and are reported for information only*This flaw meets the Design Analysis requirements of NAPS Relief Request A. 1.3.Data Analyst: Level: III Date: 04/2512,T1 Dominion LII!: 4 4e Date: I 11411_2-51 I Steam Generator

-A: Flaw Table Planar Flaws Depth to Depth to Flaw Flaw Flaw Flaw Topof Bottom Flaw Thru-No. SrtKE Lenath Y Postilgn Flaw _FlUa Wall-b Amoliud 1 -2 06 1.40 +3= 0+6 03 0.10 2 28 3.6 0.80 +2.90 121 132 0.11 5 3 3.80 5.60 1.80 +1U3 0.86 1.12 0.24 5 131.0 .00 4 1258 0 5.20 0.61 0-79 0.18 6 94.6 96.0 1.40 +0.16 2.63 2.95 0.16 1 Laminar Flaws Flaw Flaw Flaw Flaw Flaw Length Length Flaw Width Width [ IFlaw Flaw No. Sir E64 L160-h -7 End Wi0t2 D8h Am14li4l 5 6280 64+40 1ý60 -2.77 -249 1 0.28 1.144 481%--Page 4 of ms 4 ,11

! Structurai Integrity Associates Customer:jWelding Services Inc. / Dominion Examination Data Sheet No.: NAPS-SG-A-FSWOL PHASED ARRAY ULTRASONIC EXAMINATION RECORD Steam Generator-A: Axial Scan (00 SkeW)WOL Planar Flaw #1 (650) -2" to 35" 00 Skew WOL Planar Flaw #1 1;. W I V ýPage 5 of 11

!U Structural Integrity Associates WOL Planar Flaw #2 (450) -2" to 35" 0° Skew WOL Planar Flaw #2 -2" to 35" 00 Skew OL -OW.W. I Page 6 of 11 Structural Integrity Associates , WOL Planar Flaw #3 +100 Axial 00 Skew -2" to 35" 0° Skew 40 S 14 -'0 40 400 0 'fl "0 I ---WOL Planar Flaw #3 +100 Axial 0° Skew -2" to 35" 00 Skew Page 7 of 11

! Structural Integrity Associates WOL Planar Flaw #4 650 Axial 100" to 135" 00 Skew I1 I I I II I I*1 W W WOL Planar Flaw #4 650 Axial 100" to 135" 0° Skew-M Page 8 of 11 Structural Integrity Associates O WOL Laminar Flaw #5 33" to 69" +100 0° Skew FwFlaw #5 WOL Laminar Flaw #5 33" to 69" +100 00 Skew mmfi 1 Page 9 of 1l V Structural Integrity Associates

• WBM Planar Flaw #6 (350) 66" to 102" WBM Planar Flaw #6 (350) 66" to 102" Page 10of 11 V Structural Integrity Associates eSteam Generator-A: Axial Scan (1800 Skew)WBM Planar Flaw #6a (350) 66" to 102" I-tv.~-<~C 00 00 X 10 $0 "0 00 W C WBM Planar Flaw #6a (35")B Page 11 of 11

!Structural Integrity Associates Steam Generator Inlet Nozzle A Ultrasonic Examination Steam Generator A -Inlet Nozzle FSWOL -General Configuration 7.15" Safe End 16.37" Side Reference Nozzle 1.62" Punch Side .5w 1mark Reference B B Punch --Code Case N-740-2 Weld Overlay Examinatton Mar* Volume A-B-C-D-7 Note: The interface C -D includes the bond and the 11.7( heat-affected zone from the overlay. The HAZ extends A yov M 1 0 20* into the austenitic weld.D J Code Case N-740-2 ISI Examinabon Volume A-B-C- D Nozzl 3*508013 A ufoy \,"I- PV4CC SU$Cipdw!4.10'Safe End SA-4 CIAR2-saw wok Page 1 of 5

!VStiMwural Integrift Associates Steam Generator Inlet Nozzle A Ultrasonic Examination Steam Generator A -Inlet Nozzle FSWOL Weld Overlay Axial Acceptance Examination Coverage Axal VIOL Laminar Flaw Examinaton Coverage a 90.5%Axial WOL Planar Flw Examination Coverage = 100%No Lamnar Flaw.ExmunbUOI Coverage Pag 2 Of 5 V Structural Integrity Associates Steam Generator Inlet Nozzle A Ultrasonic Examination Circumferential WOL Planar Raw Examination Coverage -97.7%Steam Generator A -Inlet Nozzle FSWOL -Circumferential Examination Coverage Weld Overlay Acceptance and PSI / ISI Examination Volumes Circumferential PSI ISI_I .... Examination Coverage=

100%No Planar Raw Examination Coverage PFge 3 of 5 Structural Integrity Associates Steam Generator Inlet Nozzle A Ultrasonic Examination Steam Generator A -Inlet Nozzle FSWOL PSI / ISI Axial Examination Volume Coverage Axial PSI/ ISI Examination Coverage = 99.6%PVge 4 o5 V Shuctural Integrity Associates Steam Generator Inlet Nozzle A Ultrasonic Examination Steam Generator A -Inlet Nozzle FSWOL -Flaw Location Plot WOL Planar Flaw #f WOL.,, k WBM PiwarFlow

1. -0.V VOL ofarb #IAI Saft End SA-338-BOUR Weld AMOY 82 /1ff Page 5 of 5 0!VStr n ral I/a"*ty Associate Stow GenwWto UKAInlet Nozzle FSWOL Scan Plan Wetd CL+ (PoONWO)"o Slew Axial F Circ CCW+Ore CWN-(Neai)See Scan Lrimit at Rfight-~See Scan Linits at RightI i ~ >Azbnuthal Reference Punch As to DU Wed CI w nmwfn poseman SG tNoz e Sw. SON End Shd 0. 5.37 6.31" 90. 5.63' 6.39" 180" 5.79" 6.42'270' 5.25" 6.36'seen Scan Axis inex Aide Scan Scam AiS IndeX Axis Dkoc do Umnft LkAl Okudon Lkhft LVts A)xLaOSk -3.5 toU.8 -2" to 35' Circq0* -2 to 35" 2.7 to -5.3 Axi*l0Sk -3.5 to3.8 33" tO W CcL 0*k 33 ItoD6" 2.7 to-5.3 AxdalOak -3.5 to3.8 68W to 102' Circ Osk 66' to 102' 2.7 to -5.3 Ajdal_0sk

-3.5 103.8 100' to 136' CkcOmuk 100' to 136' 2.7 to -5.3 Axiad_180sk 1.2 to-6 136 to IO0W Circ 180sk 136" to 100. 2.7 to -5.3 AalS 180Sk 1.2 to-6 102" to W" Circ 180S 102 to 66 2.7to-5.3 Axia_1809k 1.2 to-6 68 to 33" Cir160sk 6WI to33' 2.7 to-5.3 Axial_180sk 1.2 to-6 35 to -2' Circ_180sk 35" to -2 2.7 to -5.3 Seaup Name Examinton Angles Focus kbaontln Scanning lnrwn&ent VY)L (-10' -0' -.+10') 10* Intervals 50-.100% WOL T Axial 0 Skew VWOL (25--75-)

Q 10- Intervals Projection 0.5!VM45" 5.47r HP W1M60" 5.0r HP WOL (-10' -0' -'+10") 10' Intervals 50-.100% WOL T i Axial 180 Skew WYOL (25'-75')

Q 10" Intervals Projecion

0. Detection

/ Length Sizing: 0.20'VVM 45' 5.47r Hp Sizing Index Axis: 0.10 WIM 60' 5.0' HP WOL (25'-485')

Q 10. Intervals Projection 0.5- Date Coletion Axs Crc 0 Skew (CW) WBM 45' 6.29' HP AN: 0.040.WeM 60" 5.0M HP WOL (25'-.65")

a 10. Intorvals PMOjecIo 0.5" Circ 10 &Skew (CCW) WRM45" 629' HP WIM 6O" 5.0' H__

Serial No.12-326 Docket No. 50-338 B Steam Generator Hot Leg.

C Structural Integrity Associates PHASED ARRAY ULTRASONIC EXAMINATION RECORD Customer.

[Welding Services Inc. / Dominion Examination Data Sheet No.: INAPS-SG-B-FSWOL Calibration Data Sheet No.: [See Comments Section Below Exam Start: 04/21/12 -0900 1 Exam Finish: 104/21/12

-1930 Plant: I North Anna jUnit: I I lProcedure No.: Si-UT-149 Revision:14 Examination Scans Performed Yes No Component:

DWG # 11715-WMKS-RC-E-1B.2

-Steam Generator B Inlet Nozzle FSWOL (1) Axial (Facing Downstream) 0 []Component Configuration:

Nozzle-to-Safe End Weld No: Weld N-SE29IN-Summary NI.RI.15.(004 (2) Axial (Facing Upstream) 0 E Coverage: (See below for coverage details) I Limitations:ISee Reported Conditions (3) Circumferential (Clockwise) 0 1]Component Zero X= TDC, Y= +0.00" Up stream from Examination Surface: OD Surface (4) Circumferential (Counterclockwise) 0 El Datum Locations:

Nozzle-to-Butter Interface II___I_DM Weld Width: 1.58" WOL Diameter:

42.0" WOL Temperaturs:

77°F Examination Angles & Scan Sensitivty Data File Names Axial 0" Axial 180 Circ 0" Circ 180 NAPS-SG-B-FSWOL-Axial O0k -3.6 to 4.1 -2 to 35 NAPS-SG- B-FSWOL- Clrc Osk 3 to -5 33 to 68 NAPS-SG- B-FSWOL- Axial 09k -3.6 to 4.1 33 to 68 NAPS-SG- B-FSWOL- Circ 0sk 3 to -5 66 to 102 NAPS-SG- B-FSWOL- Axial 09k -3.6 to 4.1 66 to 104 NAPS-SG- B-FSWOL- Circ Osk 3 to -5 100 to 136 NAPS-SG- B-FSWOL- Axial 09k -3.6 to 4.1 102to135 NAPS-SG-B-FSWOL-Circl809k3to-5

-2to35 NAPS-SG- B-FSWOL- Axial 180sk 1.6 to -6.1 -2 to 35 NAPS-SG- B-FSWOL- Cire 180* 3 to-5 33 to 68 NAPS-SG- B-FSWOL- Axal 1809k 1.6 to-6.1 33 to 68 NAPS-SG- B-FSWOL-Circ 180*k 3 to-5 66to 102 NAPS-SG- B-FSWOL-Axial 1809k 1.6 to-6.1 66 to 102 NAPS-SG- B-FSWOL-Circ 1809k 3 to.- 100to 136 80"/ 41dB 607 41dB 601 48dB 607 48dB NAPS-SG- B-FSWOL- Axial 180sk 1.6 to -6.1 100to 136 NAPS-SG- B-FSWOL- Circ Osk 2.5 to -3 10 to 110 NAPS-SO B-FSWOL- Circ 09k 3 to 2 to 35 NAPS-SG- B-FSWOL- Circ 180sk 2.5 to -3 10 to I 10 Comments: During the examinations, six (6) flaw indications were reported; two (2) Weld Overlay (WOL) planar flaws and four (4) WOL laminar flaws. All six flaws are acceptable in accordance with ASME Section XI, IWB-3514 and the additional requirements of Relief Request N-14-CMP-001.

See the IWB-3514 flaw characterization and evaluation on the following pages. In addition, five (5) axial service-induced planar flaws were detected in the original weld and butter (WMB)of the component Two of these WBM axial planar flaws extend into the PSI / ISI examination volume. These five (5) axial service-induced planar flaws are acceptable, as indicated in SIA Calculation Package File No.: 1100226.310 "North Anna Steam Generator Hot Leg Inlet Nozzle Weld Overlay Sizing Drawing".Examination Coverage: Examinations achieved 90.1% coverage of the required volume of the Weld Overlay material examination volume for Laminar Flaws.Examinations achieved 95.9% coverage of the required volume of the Weld Overlay material examination volume for Planar Flaws.Examinations achieved 99.7% coverage of the required volume of the PSI -ISI examination volume.Examinations achieved 100% coverage of the susceptible material within the examination PSI -ISI examination volume.The applicable Calibration Data Sheets are listed below.NAPS SGB -WOL -0 AXIAL; NAPS SGB -WOL -180 AXIAL NAPS SGB -WOL -0 CIRC; NAPS SGB -WOL -180 CIRC Analysis: Reviewer: Level: lVDate: a't'Level: A / Date: Dominion: , 14 Date: Date: J J f H J I Page 1 of 30 Structural Integrity Associates PHASED ARRAY ULTRASONIC EXAMINATION RECORD i Customer.

Welding Services Inc. I Dominion Examination Data Shoot No.: NAPS-SG-B-FSWOL Examination Coverage Calculations Componet ID: NAPS-SG-B* Jim TPwia uv Tinna 1 rrixnu xminrin olm zI=-nm Fw-pwwm B Axial Toward Nozzle TotalAra CoyadAra Percen 1366 1231 901 Axial TowardSafe End TotalAa C~oeradArea Percent 1366 1231 901 Circumferential CW I CCW MjA Wl Ovm f Aacepns ea khimn n Volume .Pfnr Flws W U Wabhted Coverage 050 451 Vbgt jaohted Coverac~e 050 451 Total: 90.1 Axial Toward Nozzle Axial TowardSafe End Circumferential CW I CCW PSI I Is/ Examilaian V, Axial Toward Nozzle Axial TowardSafe End Circumferential CW I CCW 1366 1366 1000 025 250 alAea e t Weigihted Cowraoe 1366 1366 1000 025 250 Totl Aea a Pe Wnt Weihted Co2,lil" 1366 1255 919 050 459 Total: 95.94 aluefl* Circumference Corrected Percent Percentage of Percent TotalAra Ara £sag Orcumference 705 705 1000 933 933 Percent Percentage of Totale C Area Coverae C rcurnaren 1020 990 971 67 65 705 699 99 1 9330 92.5 1020 995 975 67 65 Totl Ara Area Percnt Wmukt Weited Coveraoe 1020 1020 1000 025 500 Total: 99.71 0 25I 0 25 A2191 025 0 25 025 Weohd Total Weighted Coveraqa 233 2495 Weighted Coveragut 16 Weighted Co erag Total Weiohted Coveraoe 231 2476 Weighted Co,.eag 16 Page 2 of 30 SStructural Integrity Associates i PHASED ARRAY ULTRASONIC EXAMINATION RECORD E- Customer:

Welding Services Inc. I Dominion Examination Data Sheet No.: NAPS-SG-B-FSWOL WOL Planar Flaw Comparison to Acceptance Standards Component ID: NAPS SG-B ASMUE Section Xl (2004) Table IWB.3514-2 (PSI)Flaw Subsurface (S) Depth Depth Flaw Upper (OD) Subsurface Code Flaw Flew Flaw Flaw 00 to Top O to Bottom Thru-Wall Component Acceptance Flew Flaw Flaw Boundary Material Flew Flaw Allowable Only Flaw No. Sund End Lange ofFI ofl Flw 2a Thfk Zn A Adn A n Proxi T.miy I= adi an at& Xman Re-,ts 2" 22 2 8 060 162 1 86 024 403 164 012 020 732 Suosuuface Austenutic 020 732% 878% 1 Acceptable 3 -200 -120 080 170 194 024 403 164 012 0 15 732 SuOufface Austenutic 0 15 732% 858% 1 Acceptable"Largest pamar flaw located in the grouping detected adjacent to Larrmnar Flaw #1 Not.'1 t DM Weld T, (nominal thickness)

Notse Thickness applicable for flaw acceptance Reliant upon the WOL thickness over the ODI weld WOL Laminar Flaw Comparison to Acceptance Standards Complone 10: NAPS SG-B Flaw Flaw Flaw Flew Volume Flaw Lengthi')

LengthIl t Flew Width 0 Wldth") Flaw Flaw Flaw Obstructed WOL fo. Snd EW Lenotb ,S &d WidwthO A=e! Dht h bg F T.Ihknma 1 -100 000 100 -192 -148 044 044 170 000 164 4 2640 2740 100 1.82 209 027 027 108 013 164 5 2900 3000 100 178 200 022 022 108 001 164 6 3320 3420 100 182 209 027 027 108 013 164 iTotall iTONI SFlow I Obstructedi Note I" The length axis of the laminar flaw is usually parallel to the direction of welding Note 121 The width axis of the laminar flew is usually perpendicular to the direction of welding Width dimensions of laminar flaws are supplied for the asove calculations are best-effort estimates ASME Section XI (2004) Table IWB-35143 Relief R&augitAccepance Stea.ASME Unear Laminar Obstructed Code Dimension Area Volume aija 11211 dEi11K2 In" OK.Accept OK OK OK Accept OK OK OK Accept OK OK OK Accept OK OK OK WOL Postulated Radial Flaw Obstructed by Laminar Flaws ASME Section XI (2004) Table IWB3514-2 (PSI)Flaw Subsurface (S) Depth Depth Flaw Upper (00) Subsurface Code Flaw Laminar Flaw Flaw Flaw OD to Top 00 to Bottom Thru.Wall Component Acceptance Flaw Flew Flaw Boundary Material Flaw Flew Allowable Only Flaw JIg. Jfad mil Lenngb of Fa otfiFlo 2& Th~ic 11 nlajilmitt a ad anl Eroximklo LM nad nh an X211111 Ream 1 Evaluation for this law not required as flaw lies on WOL-to-base material interface No postulated flaw evaluation required 4 2640 2740 100 108 131 023 403 164 012 0004 701 Subsurface Austenitic 0 004 701% 819% 1 Acceptable 5 2900 3000 100 108 131 023 403 164 012 0004 701 Subsuiface Austenitic 0004 701% 819% 1 Acceptable a 3320 3420 100 108 131 023 403 164 012 0003 701 Subsurface Austenitic 0003 701% 819% 1 Acceptable No0e4 1 OM Weld T, (nominal thickness)

Noter Thickness applicable for flaw acceptance Reliant upon the WOL thickness over the OMI weld Page 3 of 30 Structural Integrity Associates WBM Planar Flaw Summary Component lD: NAPS SG-B Depth Component Overlaid Flaw Flaw Flaw Flaw 00 to Top Base Material Component fL9, sM nd LeangthI o R.E btim Thicknems 7 -060 060 120 413 403 5,64 8 -020 120 140 454 4.03 564 9 -130 030 160 192 4.03 564 10 -0.90 0.40 130 186 403 5.64 11 -010 080 090 347 403 5.64 For Flaws #7T 8 and 11 the depth from the component 00 to the too of the flaw is reported using a sizing technique that is not PDI qualified owing to the fact that the flaws lie outside of the qualified material volume The depth dimensions from the component outside surface (00) are promided for information only The depth to the bottom of the flaw is the thickness of the ovedaid material as the reported flaws are believed to originate at the inside surface of the component The above flaws meets the Design Analysis requirements of NAPS Relief Request A 1 3 lyata Ana. Q1 "Lvel/OLlanar Flaw!1; Flirw Flow FlowIs= End:III Date: Dominion LIUI: Date: A1 Steam Generator

-B: Flaw Table Raw Y P~liI Deptht 101 epth 10 Flawf Botto~mn Flaw Thru-Llinlli F nbm law IElm IWall 2a Ampituade 2 92 28 1 060 1 -33to-13 1 162 1 166 1 024 1 48%3 1 -2,00 I -1201 080 -160 1 170 1 194 1 024 1 38%Laminar Flaws Flaw eFlw Flaw Flaw Flew Length Length Flaw Width Wdth Flaw Flaw No. _IW_ End II.M 5=ar End A M Death AmQWd 1 -100 000 100 -192 -148 044 170 0%4 2640 2740 100 182 209 027 108 36%5 2900 30.00 1 0 0 178 200 022 108 4 6 1 3320 3420 1 10 182 2.09 027 108 1 ____25_WBM Planar Flaws Depth OD0w Flaw Flew Flaw Flaw Top No.L _jMgL EndL _,L Y Position of Flaw Amplitude 7 -060 060 120 1500 413 4U%8 -020 120 140 2500 454 2 9 1.30 030 -100 450 192 lO -2 :2 0 2o 1. ;300 4 0 1o 2 0 o 1 78%091 -010 0 40 9 I --- 347 1 4F%30 Page 4 of 1'PJLj 'i/a6Il-z SinWiural Integrity Associates PHASED ARRAY ULTRASONIC EXAMINATION RECORD Ix n Customer:

Welding Services Inc. / Dominion Examination Data Sheet No.: NAPS-SG-B-FSWOL Steam Generator-B: Axial Scan (00 / 18 0°Skew) Flaw Detection Scans WOL Laminar Flaw #1 (+100) -2" to 35" 00 Skew Page 5 of 30 U Structural Integrity Associates WOL Planar Flaw #2 Grouping of Planar Reflectors Adjacent to Laminar Flaw #1 (45°) -2" to 35- 00 Skew-O ýPlanar Flaw #2 Grouping of Planar Flaws-IC C U C I H I It 5 S WOL Planar Flaw #2 Typical Planar Flaw in Grouping Adjacent to Laminar Flaw #1 (45°) -2" to 35" 00 Skew I 7jr~F'I 4 i Planar Flaw #2 (Typical of Planar Flaws)I IT __I~Page 6 of 30 I Structural Integrity Associates WOL Planar Flaw #3 -2" to 35" Circ 180 Skew T, -#-1111111 WOL Planar Flaw #3 -2" to 35" Circ 180 Skew Page 7 of 30 VStructural Integrity Associates SWOL Laminar Flaw #4 (00) -2' to 35" 0° Skew WOL Laminar Flaw #4 (0°) -2n to 350 0° Skew Laminar Flaw #4 S -4 Page 8 of 30 V Structural Integrity Associates WOL Laminar Flaw #5 (00) -2" to 35" 0* Skew WOL Laminar Flaw #5 (00) -2" to 35" 0° Skew_________

________ ______ -Laminar Flaw #5 _ _ _ _ __ _ _~12ki*u.Page 9 of 30 Structural Integrity Associates tWOL Laminar Flaw #6 (00) -2' to 35' 00 Skew WOL Laminar Flaw #6 (0°) -2" to 35" 0° Skew Laminar Flaw #6 _..-_.4 -- 11i Page 10 of 30 v Structural Integrity Associates Steam Generator-B: Axial Scan (0° / 180°Skew)

Flaw Detection Scans WBM Planar Flaw #7 (250) -2" to 35" 0* Skew WBM Planar Flaw #7 (250) -2" to 35" 0= Skew Flaw #7 Page 11 of 30

!V Structural Integrity Associates WBM Planar Flaw #7 (250) -2" to 353 00 Skew I 1: -1 .1ýFlaw #7 Page 12 of 30 SStructural Integrity Associates tWBM Planar Flaw #8 (25°) -2" to 35" 0* Skew WBM Planar Flaw #8 (250) -2" to 35" 00 Skew Flaw #8 Page 13 of 30 V Strucfural Integrify Associates WBM Planar Flaw #8 (250) -2' to 35" 0* Skew'Flaw #8 Page 14 of 30 Structural Integrity Associates WBM Planar Flaw #9 (450) 33" to 68" 00 Skew)#-#9-I. C __________________________________

0 CU fI C WBM Planar Flaw #9 (60°) 33" to 68" 0* Skew Page 15 of 30

!V Structural Integrity Associates WBM Planar Flaw #9 (600) 33n to 68" 00 Skew Page 16 of 30 V Strutural Integrity Associates r WBM Planar Flaw #10 (45*) 33" to 68" 1800 Skew WBM Planar Flaw #10 (450) 33" to 68" 1800 Skew.... ! I 7 #10 II_____________

I-U * ~j U H flh 'U 1~ flO Page 17 of 30 Structural Integrity Associates rWBM Planar Flaw #10 (450) 33" to 68" 1800 Skew i-law #1u Page 18 of 30

!V Structural Integrity Associates WBM Planar Flaw #11 (250) 66" to 102" 0° Skew WBM Planar Flaw #11 (25*) 66" to 102" 00 Skew Page 19 of 30 Structural Integrity Associates r WBM Planar Flaw #11 (250) 66W to 102" 00 Skew'Flaw #11 LI Page 20 of 30

!I Structural Integrity Associates Steam Generator-B: Axial Scan (0° / 180°Skew)

Flaw Sizing Scans WBM Planar Flaw #7 (250) 10" to 100" 0* Skew C WBM Planar Flaw #7 (25°) 10' to 100" 0° Skew Page 21 of 30 SStructural Integrily Associates WBM Planar Flaw #7 (250) 1On to 100" 0* Skew'Flaw #7 Page 22 of 30 V Structural Integrity Associates WBM Planar Flaw #8 (25°) 10" to 100" 0* Skew I--WBM Planar Flaw #8 (250) 10" to 100" 00 Skew Page 23 of 30 Structural Integrity Associates SWBM Planar Flaw #8 (250) 10" to 100" 00 Skew-37 Flaw #8 Page 24 of 30 I Structural Integrity Associates WBM Planar Flaw #9 (600) 10" to 100" 00 Skew-112 F,~A~J-(C WBM Planar Flaw #9 (60°) 10" to 100" 0° Skew Page 25 of 30 I Structural Integrity Associates WBM Planar Flaw #9 (60°) 10" to 100" 00 Skew L;IFlaw #9 Page 26 of 30 SStructural Integrity Associates WBM Planar Flaw #10 (45°) 10' to 100I 1800 Skew WBM Planar Flaw #10 (60°) 10" to 100" 1800 Skew Page 27 of 30 V Structural Integrity Associates WBM Planar Flaw #10 (600) 10" to 100" 1800 Skew Page 28 of 30 Structural Integrity Associates WBM Planar Flaw #11 (35°) 10' to 100" 00 Skew WBM Planar Flaw #11 (35°) 10" to 100" 0° Skew Page 29 of 30 V Structural Integrity Associates tWBM Planar Flaw #11 (350) 1I" to 1OT 0* Skew Page 30 of 30