ML17251A617

1986 Steam Generator Eddy Current Exam Summary Rept.

ML17251A617
Person / Time
Site:	Ginna
Issue date:	03/01/1986
From:	Curtis A, Henry G, Snell T ROCHESTER GAS & ELECTRIC CORP.
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ML17251A616	List: ML17251A615 ML17251A617
References
NUDOCS 8603270184
Download: ML17251A617 (40)

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{{#Wiki_filter:RO,CHESTER GAS R ELECTRIC CORPORATION RESEARCH AND SCIENCES DEPARTMENT MATERIALS ENGINEERING DIVISION 1986 STEAM GHNHRATOR EDDY CURRENT EXAMINATION'

SUMMARY

REPORT FOR R.E.GINNA NUCLEAR PO)VHR PLANT MARCII 1, 1986 PREPARED BY: G.L.Henry, NDH Technician, Materials Engineering Level II HT PRHPARHD BY: T.F.S ell ND~Tec nician, Materials Engineering Level II ET APPROVED BY: A.H.Cur tis III, Manager, Materials Engineering Level III Examiner pgp ADOCH, 05000g24~4 8

TABLE OE'CONTENTS

1.0 INTRODUCTION

2.0, DATA ACQUISITION PROGRAM 3.0 DATA ANALYSIS RESULTS

SUMMARY

4.0 OBSERVATIONS 5.0 CORRHCTIVH ACTION INTRODUCTION The following report is a summary of the results of the multifrequency eddy current examination performed during the February 1986 Annual Refueling and Maintenance Outage at the R.E.Ginna Nuclear Power Station.The examination was performed on both the"A" and"B" recirculating steam generators which are Westinghouse Series-44 design, containing 3260 Inconel tubes having a nominal 0.875" O.D.by 0.050" wall thickness. The examination was performed by Rochester Gas 8e Electric (RGRE)personnel that have been trained and qualified in the eddy current method to at least a Level I certification. Other personnel support during data acquisition was provided by Westinghouse Electric Corporation and the Babcock 8z Wilcox Company (BhW).The initial data analysis review was performed by a team of ZETEC personnel. An independent data analysis review was performed by RGhE and B&W personnel subsequent to the Zetec analysis.The data analysis was performed, by both teams, utilizing the Zetec DDA-4 Digital Data Analysis System.In addition, Westinghouse Electric Corporation's Intelligent Eddy Current Data Analysis System (IEDA)was utilized as a third review of the data as part of an RG8cE Research and Development Project.Final resolutions of all data analysis performed by RGfkE Level II and III personnel. The purpose of the eddy current examination was to assess any corrosion or mechanical damage that may have occurred during the operation cycle since April 1985.Particular attention was given to detecting intergranular attack (IGA)and stress corrosion cracking (SCC)in the tubesheet crevice region;pitting and wastage between the tubesheet and first tube support plate;denting and wear fretting at the antivibration bar to tube intersections in the U-bend region.

DATA ACQUISITION PROGRAM 11 The eddy current examination of the"A" 5"B" steam generators was performed utilizing the Zetec MIZ-18 Digital Data Acquisition System.The frequencies selected were 400, 200, 100 and 15kHz, all of which were run in the differential and absolute modes.The examination was performed primarily with a standard 0.740"-0.720" O.D.bobbin coil with smaller diameter probes used to traverse the smaller radius U-bends.Prior to the examination of the steam generators, a prograni was established for each leg (inlet and outlet)of both the'A" and"B" stean>generator. The philosophy in generating this program is to provide 100%%uo examination of each steam generator up to the first tube support plate along with one fifth of the tubes being selected for a full length inspection. This will provide 100%inspection of all tubes every five years.Table I is a breakdown, by steam generator, of all tubes examined and to the extent tested. STEAM GENERATOR"A" 1986 EDDY CURRENT EXAMINATION PROGRAM PRIOR TO CORRECTIVE ACTION EXTENT TESTED NUMBER OF TUBES PERCENTAGE FULL LENGTH 612 18.8%PART LENGTH FROM INLET gl TSP H¹2 TSP H g3 TSP H g4 TSP H g5 TSP H¹6 TSP H SLEEVED TUBES TUBES PERMANENTLY PLUGGED 2240 248 24 6 0 126 68.7%7.6%0.7%0.2%0,0%0.1%100.0%3.9%PART LENGTH FROM OUTLET¹1 TSP C g2 TSP C¹3 TSP C g4 TSP C g5 TSP C g6 TSP C 0.0%0.0%0,0%0'%0.0%0.3%U-BEND 0.0%g6 TSP H g5 TSP H¹4 TSP H¹3 TSP H¹2 TSP H¹1 TSP H HTS 2 0 0.0 0 0 0 0.1%0'%0.0%0.0%0.0%0.0%0'%TABLE 1

STEAN GENERATOR"B" 1986 EDDY CURRENT EXAHINATION PROGRAtt PRIOR TO CORRECTIVE ACTION EXTENT TESTED FULL LENGTtt tfUHBER OF TUBES 703 PERCENTAGE 21.6%PART LENGTH FROtt INLET 81 TSP H g2 TSP H g3 TSP H g4 TSP H g5 TSP H g6 TSP H 2293 14 1 0 1 59 70.3%0.4%<0.1%0.0%<0.1%1.8%SLEEVED TUBES TUBES PERNANENTLY PLUGGED 171 177 100.0%5,4%PART LENGTH FROM OUTLET gl TSP C g2 TSP C g3 TSP C g4 TSP C g5 TSP C g6 TSP C 0 0 0 0 0 63 0.0%0,0%0.0%0.0%0.0%1,9%U-BEt)D 0 0.0%g6 TSP H g5 TSP H g4 TSP H P3 TSP H f2 TSP H Pl TSP H HTS SLEEVE END 159 0,1%0,0%0.0%0.0%0.0%0'%0.0%93.0%TABLE 1 CON'T DATA ANALYSIS RESULTS

SUMMARY

The initial and independent review data analysis was performed using the Zetec DDA-4 Digital Data Analysis System.Edition 18.1 of th'e~data analysis software was used to analyze data from the MIZ-18 digital data acquisition system.This system provides on-line data digitization and storage on to a magnetic data cartridge. All digital data (up to 8 channels)is sent directly to the HP-9836 computer from the data cartridge recorder.The tube number identification is encoded on the data cartridge. A message block is available should any comments be desired during da'ta acquisition. I All data cartridges were reviewed by displaying the 400 kHz data on the CRT along with the vertical component of the differential and absolute mix outputs in strip chart form.Other frequencies and their components were selected as needed for final resolution. All recordable indications were logged into the computer and stored on floppy disk..The final report form summarizing all crevice and>20%%uo TWD indications for each steam generator (inlet and outlet)can be found in this section.An explanation of the abbreviations and nomenclature used on these lists has been compiled for ease of interpretation. Table II has been compiled to show a list of the total number of dents at each axial elevation and a breakdown of defects by percent TWD.The dent indications on this table are only those with signal amplitude of 5 volts and greater, which would approximate about a 0.025" dent on the diameter of the tube. S G"A" DEttT&DEFECT LOG FEBRUARY 1906 INSPECTION INLET OUTLET DEttTS: DENTS: HTS"MID HTS HTS"1H 1H 1H-2H 2H 2H"3H 3H 3H-4H 4H 4H-5H 5H 5H-6H 6H>6H AVB1>AVB1 AVB2>AVB2 9 242 6 230 17 0 0 0 1 0 10 2 117 1 0 0 0 0 CTS-tlID CTS CTS"1C 1C 1C-2C 2C 2C-3C 3C 3C-4C 4C 4C-5C 5C 5C-6C 6C>6C AVB4">AVB4 AVB3>AVB3 0 3 3 6 0 5 1 1 0 3 0 1 1 7 0 0 0 0 0 TOTAL DENTS" 639 TOTAL DEtlTS" 31 DEFECTS: DEFECTS: 0-19%20-29%30-39%40-49%50 59%60-69%70-79%00-09'%0-100% 416 145 16 1 0 0 1 0 0 0"19%20-29%30"39%40-49%50-59%60-69%70-79%80-09%90-100%124 12 1 0 0 0 0 0 0 TOTAL DEFECTS-579 TOTAL DEFECTS" 137 TABLE 2 S G"B" DEttT&DEFECT LOG FEBRUARY 1906 IWSPECTZOW INLET OUTLET DENTS: DENTS: HTS-tlID HTS ftTS-1H 1H 1H-2H 2H 2tt-3H 3H 3H-4H 4H 4H-5H 5H 5H-6)t 6H>6H AVBl>AVB1 AVB2>AVB2 6 303 7 21 1 0 0 0 0 0 0 1 0 36 0 0 0 0 0 CTS-ttID CTS CTS-1C 1C 1C-2C 2C 2C-3C 3C 3C-4C 4C 4C-5C'C 5C-6C 6C>6C AVB4>AVB4 AVB3>AVB3 0 61 0 4 0 0 0 1~0 1 0 1 0 10 62 1 0 0 0 TOTAL DENTS" 375 TOTAL DEttTS-149 DEFECTS: DEFECTS: 0-19%20-29%30"39%40-49%50-59%60-69%70-79%00-09%90-100%S R 265 32 7 2 5 13 12 9 4 0-19%20-29%30-39%40-49%50 59%60-69%70-79%00-89%90-100%75 1'0 0 0 0 0 0 TOTAI DEFECTS" 353 TOTAL DEFECTS" 70 T~ABLE 2~COtl'T LIST OF>20%INDICATION AND CREVICE INDICATION NOMENCLATURE To of List Information SG-Steam Generator and Leg (ie: 1=A, 2=B and 1=Inlet, 2=Outlet)ROW-ROW number from the tube identification. COL-Column number from the tube identification. VOLTS-P-P amplitude of the measured indication signal response.%-Percent through wall from O.D.based on measured signal.CH@-Channel from which indication was determined. LOCATION-Location of indication relative to tubesheet or support plate.INDEX-Location of tube data on data disk.Information Under%11<20-Measurable indication less than 20%through wall (IGA-SCC). >40-Absolute indication measured from absolute mix where depth determination could not be accurately performed (IGA only).SQR-Multiple indications interferring with a depth determination (IGA-SCC). I~DS-Distorted roll transition indication that cannot be confirmed or measured.XX-The measure percent through wall of the deepest penetration (SCC)within an IGA patch or area.TWD-Through Wall Dimension Information Under CHP 1-Indication determined and measured with 400 kHz dif ferential for final interpretation. M2-Indication determined with absolute mix, depth cannot be accurately determined, but based upon amplitude is felt to be above 40%IGA. I1 LIST OF>Z0%INDICATION AND CREVICE INDICATION NOMENCLATURE (COB'7)" Information Under LOCATION HTS-Secondary face of inlet tubesheet. TSP-Tube Support Plate CTS-Secondary face of outlet tubesheet.-XX.X-Depth below the secondary face of the tubesheet or support plates where the indication is located.+XX.X-Height above the secondary face of the tubesheet or support plates where the indication is located.

RG&E EDDY CDRRE))I It)SFKYIO)I REFORT'riday february 26,)986)2:59 FII PNE I PI.AtlT: RG&E-GIHHA OUTAGE: RG&E 1906 SGA REPORT: TUBES WITH It)DICATIOHS 20'4 OR GREATER STEAH GENERATOR It)SPECTED FROH A BOTH)IL&Cl.ABW CHT CKS DHG DTS FRT IGA t)GV NDD OBS PRH RPG SLG TPG UBC WTH 1&2 Anti-Vibration Bar Wear Chatter Cracked Support Plate Ding Distorted Tube Sheet Fretting Intergranular Attack Hachining Groove No Detectable Defects Obstructed Permeability Removed Plug Sludge Template Plug U"Bend Crack Mall Thinning B&W Sleeve Tapes BLG CPR DHT" DRT DSP IHC SCC t)AG HSY FPG PIT SLV SQR TBR UDS WAS Bulge Copper Dent Distorted Roll Transition Plate Distorted Tube Support Incomplete Test Stress Corrosion Crack tlagnetite Noisy Tube Permanent Plug Pitting Sleeved Squirrel To Be Rerun Undefined Signal Wastage ROW COL VOLTS DEG IHD CH ELEV IHCHES COIIHEHTS EXTENT PS ID7 7 8 8 8 9 10 11 13 14 15 1G 17 10 11 12 14 15 18 19 12 12 13 14 21 21 10 11 12 13 12 13 14 17 17 9 21 21 23 17 17 10 22 22 24 25 20 1.54 150 20 2.14 162 20 1.52 161 20 1.43 162 21 2.47 158 21 2.81 150 21 1.01 159 21 4.15 151 21 2.66 158 21 2.16 159 21 3.98 149 21 2.91 153 21 1.93 149 22 2.15 162 22 2.77 157 22 2.08 157 22 3.59 159 22 3.30 157 22 3.28 155 22 1 52 158 23 4.70 158 23 2.70 158 23 8.83 150 23 4.43 156 23 2.56 156 23 1~83 15G 24 1.84 162 24 2.16 159 24 4.10 161 24 5.23 156 25 3.72 157 25 3.88 146 25 7.55 153 25 6.86 150 25 2.82 161 26 3.04 153 26 3.80 152 26 2.77 159 26 1.27 152 27 3.57 154 27 3'53 149 27 5 47)45 27 5.42)51 27 5.63)53 27 2.10 156 27 1.68 155 28 1,.58 160 28 5.)8)53 23 20 20 20 23 29 22 29 23 22 30 27 30 20 24 24 22 24 25 23 23 23 29 25 25 25 20 22 20 25 23 32 26 29 20 26 27 21 27 25 30 33 20 26 24 25 21 26 1 HTS 1 HTS 1 HTS 1 HTS 1 HTS 1 HTS 1 HTS 1 HTS 1 HTS 1 HTS 1 HTS 1 HTS 1 HTS 1 HTS 1 HTS 1 HTS 1 fKS 1 HTS 1 HTS 1 HTS 1 HTS 1 HTS 1 HTS 1 HTS 1 HTS 1 HTS 1 HTS 1 HTS 1 HTS 1 HTS 1 HTS 1 HTS I HTS 1 HTS 1 HTS 1 HTS I HTS 1 HTS I HTS 1 HTS 1 HTS 1 HTS 1 HTS 1 f ITS 1 HTS 1 HTS 1 HTS I HTS 2.5 1.9 2,2 1.8 1.9 2'2.0 2.0 2.5 1.7 1.6 1.1 1.2 3.1 2.5 1.0 2.0 2.0 1.2 0.9 2.8 2.1 3.2 3.0 1.5 0.9 1.9 2.8 2;8 2.7 2~4 2.3 2'2.3 2.9 0.9 1.9 2'1.8 2.9 2.3 2.7 1.9 2.7 1.6 1.2 2.1 1.7¹I TSP H¹1 TSP fl¹I TSP H¹I TSP H¹I TSP ll¹1 TSP H¹1 TSP H¹1 TSP H¹1 TSP H¹I TSP H¹I TSP H¹1 TSP H¹1 TSP H¹1 TSP H¹I TSP H¹1 TSP H¹1 TSP H¹I TSP H¹I TSP Il¹1 TSP H¹I TSP'H¹1 TSP H¹I TSP H¹1 TSP H¹I TSP H¹I TSP H¹G TSP H¹G TSP H¹6 TSP H¹6 TSP H¹6 TSP H¹6 TSP.H¹6 TSP H¹6 TSP H¹6 TSP H¹6 TSP H¹6 TSP H¹6 TSP H¹G TSP H¹6 TSP H¹6 TSP H¹6 TSP H¹6 TSP)I¹6 TSF H¹6 TSP El¹6 TSP H¹6 TSP fl¹6 TSP H 2 740 2 740 2 740 2 740 2 740 2 740 2 740 2 740 2'740 2 740 2 740 2 740 2 740 2 740 2 740 2 740 2 740 2 740 2 740 2 740 2 740 2 740 2 740 2 740 2 740 2 740 2 740 2 740 2 740 2'140 3 740 3 740 3 740 3 740 3'140 3 740 3 740 3 740 3 740 3'740 3 740 3 740 3'1'40 3 740 3'140 3 740 3 740 3 740 Hl)IL I)L))I HL HL HL HL HL flL IIL flL ifL HL HL Hl.Hl HL)IL Hl(HL flL HL HL HL HL HL HL Hlj HL HL HL HL HL)IL HL HL HL HL)IL HL IIL HL HL HL HL HL HL RGKE EDDY CURRENT INSPECTION REPORT Friday February 28, 1986 12:59 PN PhGE 2 PLANT OUTAGE RAPPORT RG&E" GINNA RG&E 1986 SGA TUBES WITH INDICATIONS 204 OR GREATER STEAII GENERATOR INSPECTED FROI{BOTH HL&CL ROH COL VOLTS DEG IND CH ELEV INCHES CO{{I{ENTS EXTENT REEL PS ID15 24 23 24 25 16 23 23 24 25 26 26 20 22 23 24 26 28 21 22 23 25 19 21 23 25 26 19 21 21 22 22 23 25 26 39 39 20 21 26 27 28 21 21 22 24 25 26 27 24 25 27 20 20 21 25 26 26 28 29 20 21 29 26 20 29 29 30 30 30 31 31 31 31 31 31 31 32 32 32 32 32 32 33 33 33 33 34 34 34 34 34 35 35 35 35 35 35 35 35 35 35 36 36 36 36 36 37 37 37 37 37 37 37 38 38 36 39 39 39 39 39 39 43 44 45 45 45 46 47 4.02 3.11 4.73 3.83 6.84 1.52 4.54 6.00 4.49 5.00 2.54 2.37 3.35 8.03 6.02 6.20 3.86 1.48 3.13 7.16 6.20 3.98 2.19 4.47 3.66 5'47 5.22 3.68 4.68 2.15 4.04 2.79 4.92 4.67 4.27.26 2.52 2.18 4.21 3.90 5.01 3.25 3.33 5.81 3.67 4.81 5.75 4.80 4.14 4.30 5.96 3.55 3.36 3.89 4'9 4.17 6.70 6.70 5.30 5.49 5.08 7.34 4.62 4.39 4'3 150 153 153 149 155 161 147 145 147 153 161 157 146 149 148 154 153 158 156 152 150 157 143 151 153 155 154 151 155 157 153 157 153 155 157.122 78 154 154 150 145 148 157 152 158 157 151 156 149 147 151 149 155 158 157 152 156 156 159 158 8 10 8 157 11 29 26 26 30 25 20 31 33 31 26 20 21 32 30 30 25 26 20 20 24 26 20 32 25 23 21 22 25 21 20 23 20 23 21 20 33 21 M 22 22 26 30 28 21 25 20 20 26 21 27 29 26 27 24 20 22 25 21 21 21 22 20 25 20 23 26 1 HTS 1 HTS 1 HTS 1 HTS I HTS 1 HTS 1 HTS 1 HTS 1 HTS 1 HTS 1 HTS 1 CTS 1 HTS 1 HTS 1 HTS 1 HTS 1 HTS 1 CTS 1 HTS 1 HTS 1 HTS 1 HTS 1 HTS 1 HTS 1 HTS 1 HTS 1 HTS 1 HTS 1 HTS 1 HTS 1 HTS 1 HTS 1 HTS 1 HTS I HTS 1 g4 AVB 2 g3 AVB 1 HTS 1 HTS 1 HTS 1 HTS 1 HTS 1 CTS 1 HTS 1 HTS 1 HTS 1 HTS 1 HTS 1 HTS 1 HTS 1 HTS 1 HTS 1 CTS 1 CTS 1 CTS 1 HTS 1 HTS 1 HTS 1 HTS 1 HTS 1 CTS 1 CTS 1 CTS 1 gl TSP H+1 CTS 3.0 1.3 1.'8 1.4 1.3 3.7 2.5 1.8 1.6 1.3 1.1 1~7 2.8 1.8 2.5 1.6 0.9 1.1 2.0 2.4 2.2 1.7 2.1 2.2 2.6 1.7 1.2 2.2 2.2 0.9 1.6 2.1 2.6 1.5 1.2 0.0 0.0 1.8 2.3 1.5 1.5 1.0 2.2 1.8 1.6 2.1 1.3 2.1 1.7 2.2 2.3 1.9 F 6 2.2 1.8 1.9 2.0 2.0 1.9 1.3 15.6 15.6 1.9 1.4 16.3 HAS CPR WAS CPR WAS CPR WAS CPRA HAS CPR HAS WAS HAS HAS HAS HAS CPR HAS WAS HAS HAS WAS WAS CPR HAS<

>HAS WAS ID ID ID g6 TSP H g6 TSP g6 TSP H¹6 TSP fl g6 TSP H¹6 TSP H¹6 TSP H¹6 TSP H¹6 TSP H g6 TSP H¹6 TSP H g6 TSP H g6.TSP H¹6 TSP H¹6 TSP H g6 TSP H g6 TSP f{g6 TSP fl g6 TSP H¹6 TSP H g6 TSP H¹6 TSP H¹6 TSP H g6 TSP H¹6 TSP H¹6 TSP H g6 TSP H g6 TSP H g6 TSP H¹6 TSP H¹6 TSP H g6 TSP H g6 TSP H g6 TSP H¹6 TSP H g6 TSP H g6 TSP H g6 TSP H¹6 TSP H¹6 TSP H¹6 TSP H g6 TSP H g6 TSP H¹6 TSP H¹6 TSP H¹6 TSP C¹6 TSP H¹6 TSP H g6 TSP H¹6 TSP I{¹6 TSP H¹6 TSP fl¹6 TSP f{¹6 TSP C¹6 TSP H g6 TSP H g6 TSP I{¹6 TSP H gl TSP H gl TSP fl¹6 TSP C¹6 TSP C<<6 TSP C gl TSP H¹6 TSP H 4 740 HL 4 740 IIL 4 740'L 4 740 HL 4 740 HL 4 740 HL.4 740 HI 4 740 HL 4 740 HL 4 740 HL 4 740 HL 14 720 CL 4 740 HL 4 740 HL 4 740 HL 4 740 HL 4 740 HL 14 720 CL 5 740 HL 5 740 HL 5 740 HL 5 740 HL 5 740 HL 5 740 HL 5 740 HL 5 740 HL 5 740 HL 5 740 HL 5 740 HL 5 740 HL 5 740 HL 5 7.40 HL 5 740 HL 5 740 HL 5 740 IIL'5 720 CL 15 720 CL 5 740 HL 5 740 HL 5 740 HL 5 740 HL 6 740 HL 15 720 CL 6 740 HL 6 740 HL 6 740 HL 6 740 HL 6 740 HL 6 740 HL 6 740 HL 6 740 HL 6 740 HL 16 720 CL 18 720 CL 16 720 CL 6 740 HL 6 740 HL 6 740 HL 7 720 HL 7 720 HL 18 720 CL 18 720 CL ,18 720, CL'720 HL 22 720 CL I RGKE EDDY CURRE))T I)ISPECYIO)j REPORT Eriday Eebruary 28,)986 12:59 P)f PAGE 3 PLANT OUTAGE REPORT RG&E-GINNA RG&E 1986 SGA TUBES WITH INDICATIONS 204 OR GREATER STEAH GENERATOR INSPECTED FROH A BOTH HL&CL ROW COL VOLTS DEG IND CH ELEV INCHES COMMENTS EXTENT REEL PS ID 10.78 1.00 5.83 7.31 4.41 2.65 1.80 3.13 5.71 4.80 2.71 0.43 2.75 2.26 1.26 1.15 1.65 2.53 1.72 3,19 3.20 0.47 4.74 2.66 0.82 0.82 0.62 2.11 1.53 0.83 1.73 4.19 1.41 7.07 4.35 4.86 3.02 3.48 3.01 4.37 3.15 3.03 5.03 4.40 6.20 4.67 5.29 3.10 2.88 4.58 2'3 2.75 2.92 4.43 3.48 5.44 3.82 5.64 2.28 1.58 1.57 21 16 26 28 30 31 20 26 28 28 16 23 27 28 29 29 16 17 27 28 13 15 16 16 17 17 19 29 17 17 18 16 16 22 15 15 16 19 21 15 16 20 19 17 19 18 9 19 13 16 9 6 14 6 7 9 9 12 8 12'l l 47 48 48 48 48 48 49 49 49 49 50 50 50 50 50 50 51 51 51 51 52 52 52 53 53 53 53 53 54 54 54 55 55 57 59 61 61 61 61 62 62 62 63 64 64 66 67 67 68 68 69 70 70 71 71 72 73 73 74 76 91 END OF DATA 10 162 162 158 157'62 158 160 153 155)57 155 161 162 160 156 153 159 153 161 145 158 158 157 158 138 152 160 158 156 152 158 159 149 154 155 156 148 155 155 154 153 151 155 153 152 149 156 154 155 148 154 154 154 150 158 158 153 152 161 155 25 20 20 23 24 20 23 21 27 25 24 25 20 20 21 24 27 22 27 20 33 23 23 24 23 38 28 21 23 24 28 23 22 26 21 20 20 27 20 20 21 22 24 20 22 23 26 20 21 20 27 21 21 21 25 23 23 28 29 20 20 CTS HTS HTS HTS HTS HTS HTS HTS HTS HTS HTS HTS HTS HTS HTS HTS HTS HTS HTS HTS HTS HTS HTS HTS HTS HTS HTS HTS HTS HTS HTS HTS HTS HTS HTS HTS HTS HTS HTS HTS HTS HTS fiTS HTS HTS HTS HTS HTS I)TS HTS HTS HTS HTS HTS HTS HTS HTS HTS HTS HTS HTS 15.6 ID TSP 2'1.4 1.0 0.9 0.8 1.6 1.6 0.5 1.4 5'1 0.7 0.4 1~6 0.7 1.1 4.5 0.6 1.9 1.3 1.7 4.1+5.0 4.8 4.8 3.8 1.9 0.9 3.0 0.7 2'4.0 3'1.7 2'2.1 1.4 1.6 1.8 1.9 1~6 1.7 1.4 1.6 1.3 1.8 0.9 1.5 1.6 2'1.4 0.9 2'1.0 1~2 1.4 1.6 1~1 1.0 WAS¹1 TSP H CPR WAS¹1 TSP H WAS¹1 TSP H WAS¹1 TSP H WAS¹1 TSP H¹1 TSP H¹1 TSP H¹3 TSP H¹3 TSP H¹2 TSP H¹I TSP H¹1 TSP H¹I TSP H¹1 TSP H¹1 TSP H¹1 TSP H¹1 TSP H¹1 TSP H¹1 TSP H¹1 TSP H¹1 TSP H TSP¹1 TSP H¹1 TSP H¹I TSP H¹1 TSP H¹1 TSP H¹1 TSP H¹1'SP fl¹1 TSP H¹1 TSP fj¹I TSP H WAS¹I TSP H¹1 TSP fj¹I TSP fj¹1 TSP H¹1 TSP fl¹1 TSP fl¹1 TSP H¹1 TSP H¹1 TSP H¹1 TSP H¹1 TSP H¹1 TSP fj¹1 TSP H¹1 CHT¹1¹I¹I¹I TSP TSP TSP TSP TSP¹1¹1¹1¹1¹1¹2¹1¹3 TSP H TSP H TSP H TSP H TSP H TSP H TSP H TSP H 00.5 WAS¹1 TSP H 1.0¹1 TSP H 18 720 CL 8 720 HL 8 720 HI 8 720 HL 8 720 HL 8 720 HL 8 720 HL 8 720 HL 8 720 HL 8 720 HL 8 720 IIL 8 720 f)L 0 720 HL 8 720 HL 8 720 HL 8 720 HL 8 720 HL 8 720 HL 8 720 HL 8 720 HL 8 720 HL 8 720 HL 8 720 HL 8 720 HL 8 720 HL 8 720 HL 8 720 HL 8 720 HL 8 720 HL 8 720 HL 8 720 HL 8 720 HL 8 720 HI 9 720 HL 9 720 I)L 9 720 HL 9 720 HL 9 720 HL 9 720 HL 9 720 HL 9 720 HL 9 720 HL 9 720 HL 10 720 Hl 10 720 HL 10 720 HL 10 720 HL 10 720 HL 10 720 HL)0 720 HL 10 720 HL 10 720 HL 10 720 HL 10 720 HL 10 720 HI ll 720 HL 11 720 HL 11 720 HL 11 720 HL 11 720 HL 12 720 HL RGRE EDDY CURRENT INSPECTION REPORT'" Friday February 28, 1986 12:58 PN PAGE 1 PLANT: RG6E-GINNA OUTAGE: RGRE 1986,SGA REPORT: TUBES REQUIRING CORRECTIVE ACTION ABW-Anti-Vibration Bar Wear CHT-Chatter CKS-Cracked Support Plate DNG-Ding DTS-Distorted Tube Sheet FRT-Fretting IGA-Intergranular Attack MGV-Machining Groove NDD-No Detectable Defects OBS-Obstructed PRM-Permeability RPG-Removed Plug SLG-Sludge TPG-Template Plug UBC-U-Bend Crack WTH-Wall Thinning 162-BRW Sleeve Tapes STEAM GENERATOR: A INSPECTED FROM: HOT LEG BLG-Bulge CPR-Copper DNT-Dent DRT-Distorted Roll Transition DSP-Distorted Tube Support Plate INC-Incomplete Test SCC-Stress Corrosion Crack MAG-Magnetite NSY-Noisy Tube PPG-Permanent Plug PIT-Pitting SLV-Sleeved SQR-Squirrel TBR-To Be Rerun UDS-Undefined Signal-WAS-Wastage ACT ROW COL VOLTS DEG IND CH ELEV INCHES COMMENTS EXTENT REEI PS IDSLV 22 20 1.56 SLV 21 21 3.87 SLV 20 22 4.33 SLV ll 37 1.28 SLV 19 50 5.54 SLV 7 78 0.60 END OF DATA 71 UDS M 2 HTS 89 72 1 HTS 55 UDS M 2 HTS 165 13 1 HTS 128 46 1 HTS 173 8 1 HTS 17.2 18.9 14.9 16.5 1.8 17.9 IGA gl TSP H SCC 81 TSP H IGA gl TSP H g6 TSP H gl TSP H SCC gl TSP H 2 740 HL 2 740 HL 2 740 HL 6 740 llL 8 720 HL 11 720 HL >>X STEAM GENERATOR"4" TUBES RECEIVING CORRECTIVE ACTION-FEBRUARY 2986 PLANT: GXNNA GENERATOR: A TOTAL TUBES: 3260 S>>CE 87'ELDED SLEEVE P>>CE HECHANICAL PLUG~~~~~~~~~~~~~0~~\~~~~~~~~~~~~~3~~~~~~~~~~~.o~~~I I I I I I I Cl O Ill o lO O IlI lO o ID Cb I o I O I o Ill I I 0 O N g)HANWAY INLET (Hot Lei)-PI inary Face NOZZLE COLUHNS-35 30 A-35 I Ih IO-30 I I V-jo RG&E EDDY CURREj{T If{SPECTIO{{ REPORT friday February 28, f986 12:26 Pll PAGE 1PLANT: RG&E-GINHA OUTAGE: RG&E 1906 SGB REPORT: TUBES WITH INDICATIONS 20%OR GREATER STEAM GENERATOR: B INSPECTED FROM.: BOTH HL&CL ABW Cf{T CKS DHG DTS FRT IGA MGV HDD OBS PRM RPG SLG TPG UBC WTH 1&2-Anti-Vibration Bar Wear-Chatter-Cracked Support Plate-Ding-Distorted Tube Sheet-Fretting-Intergranular Attack-Machining Groove-No Detectable Defects Obstructed -Permeability -Removed Plug-Sludge-Template Plug-U-Bend Crack-Wall Thinning.-B&W Sleeve Tapes BLG CPR DNT DRT DSP IHC SCC MAG HSY PPG PIT SLV SQR TBR UDS WAS-Bulge-Copper-Dent-Distorted Roll Transition Plate-Distorted Tube Support Incomplete Test Stress Corrosion Crack-Magnetite-Noisy Tube-Permanent Plug Pitting-Sleeved Squirrel-To Be Rerun-Undefined Signal-Wastage ROW COL VOLTS DEG IHD CH ELEV INCHES.COMMENTS EXTENT REEL PS ID 10 6 2.33 141 9 21 6.06 155 11 22 4.06 153 20 24 4.00 153 9 25 3.18 153 15 25 3.12 153 17 25 5.51 146 22 25 0.65 156 24 25 5.92 141 17 26 5.08 147 19 26 6.02 145 24 26 6.10 149 22 27 4.35 153 21 28 3.87 155 23 28 3.81 153 19 29 7.99 155 24'0 5.74 155 42 31 1.57 144 17 33 0.89 160 24 34 1.56 148 22 30 1.36 153 41 30 1.01 140 41 38 1.49 158 24 41 3.18 144 31 43 0.64 153 27 45 4.07 155 25 50 2.56 153 23 51 1.03 150 26 51 1.64 140 25 53 0.96 153 23 56 1.19 154 30 56 2.06 150 19 62 2.51 149 22 62 4.13 161 20 62 2.90 158 20 62 2.87 153 30 62 2.21 150 20 63 2.88 147 24 64 4.59 155 26 64 3.54 149 24 65 2.93 155 EHD OF DATA 35'20 22 22 26 26 32 23 37 28"31 26 22 20 22 20 20 30 21 27 21 33 23 32 22 ,20 26 21 31 26 27 21 30 20 22 26 22 27 20~25 20 HTS HTS HTS HTS HTS HTS HTS HTS HTS HTS HTS HTS HTS HTS HTS HTS CTS TUBE HTS CTS TUBE TUBE HTS HTS HTS HTS HTS HTS HTS TUBE HTS HTS HTS HTS HTS HTS HTS HTS HTS HTS t t+ENDt EHDt EHDt++ENDt++++1.7 1.5 1.6 1.3 2'1.5 2'1.8 1.2 1.2 1.3 1.8 1.6 1.6 1.5 1.4 15'12.1 1.5 1.1 5 4 6.7 1.3 16'1.6 3'6.9 0.9 4.1 F 6 2.2 1.5 1.5 1~6 I 5 0.9 2.5 2.5 1.8 2.2 g2 TSP C+0.0 WAS CPR CPR g6 TSP C gl TSP H gl TSP H g6 TSP fl WAS g6 TSP H WAS g6 TSP H WAS g6 TSP H WAS g6 TSP H¹6 TSP H WAS g6 TSP H WAS g6 TSP H WAS g6 TSP H WAS g6 TSP H WAS g6 TSP H WAS g6 TSP H WAS g6 TSP H WAS g6 TSP H CPR¹6 TSP H HTS CPR g6 TSP H WAS g6 TSP fl flTS HTS CPR¹I TSP H HTS WAS gl TSP H WAS gl TSP fl WAS gl TSP H WAS gl TSP H WAS gl TSP f{HTS WAS¹1 TSP H WAS gl TSP H WAS gl TSP H WAS gl TSP H WAS gl TSP H WAS gl TSP H WAS gl TSP H WAS gl TSP H WAS gl TSP H WAS gl TSP H 29 720 CL 8 740 HL 8 740 f{L 8 740 HL 9 740 HL 9 740 HL 9 740 HL 9 740 HL 9 740 HL 4 740 HL 4 740 HL 4.740 HL 4 740 HL 4 740 HL 4 740 HL 4 740 HL 5 740 HL 16 720 CL 1&2 610 fll 6 740 f{L 15 720 CL 1&2 610 HL I&2 610 f{L 7 740 fll 28 610 HL 8 740 HL 9 740 HL 10 740 HL 10 740 HL 10 740 HL 1&2 610 HL 10 740 f{L 10 740 HL ll 740 HL 11 740 HL 10 740 HL 11 740 f{L ll 720 HL 11 720 f{L ll 720 HL ll 720 HL RG&E EDDY CURRENT INSPECTION REPORT Friday February 28,)986 12;21 PN PAGE I PLANT: RG&E-GINNA OUTAGE: RG&E 1986 SGB REPORT: TUBES REQUIRIHG CORRECTIVE ACTIOH STEAH GENERATOR: B IHSPECTED FROM: HOT LEG ABW.CHT CKS DNG DTS FRT IGA~MGV NDD OBS PRM RPG SLG TPG UBC WTH 1&2-Anti-Vibration Bar Wear-Chatter-Cracked Support Plate-Ding-Distorted Tube Sheet-Fretting-Intergranular Attack-Hachining Groove-No Detectable Defects-Obstructed -Permeability -Removed Plug-Sludge-Template Plug-U-Bend Crack-Wall Thinning-B&W Sleeve Tapes BLG-Bulge CPR-Copper DHT-Dent DRT-Distorted Roll T'ransition Plate DSP-Distorted Tube Support INC-Incomplete Test SCC-Stress Corrosion Crack HAG-Maqnetite HSY-Horsy Tube PPG-Permanent Plug PIT-Pitting SLV-Sleeved SQR-Squirrel TBR-To Be Rerun UDS-Undefined Signal WAS-Wastage ACT ROW COL VOLTS DEG IHD CH ELEV INCHES COHHEHTS EXTENT REEL ID PLG PLG PLG PLG PLG PLG SLV SLV PLG SLV SLV PLG SLV 3 4 0.96 102 3 4 1.00 67 2 6 3.54 70 11 6 0.52 45 9 9 0.58 60 18 10 4.09.60 8 11 0.05 31 7 13'.72 97 8 15 1.31 57 29 15 0.01 23 16 17 2.36 052 10 19 0.69 157 30 21 1.14 60 9 23 0.93 92 9 23 1.58 00 62 83 H 56 M 2 97 1 84 1 59 M 2 UDS 65 H 1 72 M 2 71 H 2 78 M 2'19 1 80 1 SQR H 27 M HTS HTS HTS HTS HTS HTS HTS HTS HTS HTS HTS HTS HTS HTS HTS 17.5 18.0 17.3 16.7 10.3 16.9 19.1 17.3 7.1 19.2 15.3 17.5 17.3 16.0 14.1 SCC SCC SCC SCC PDRT SCC PDRT SCC SCC SCC gl TSP H gl TSP)I¹1 TSP fl gl TSP H gl TSP H gl TSP H gl TSP H gl TSP f)¹I TSP fl gl TSP H gl TSP H gl TSP H gl TSP H SCC gl TSP H SCC gl TSP H 740 740 1 740 1 740 1 740 1 740 2 740 2 740 2 740 2 740 2 740 8 740 8 740 740 740 HL HL HL f)L HL)IL HL IIL HL HL, HI)IL HL HL HL PLG SLV PLG SLV SLV SLV SLV PLG SLV SLV PLG PLG 32 23 3.06 22 23 24 0.42 135 2 27 0.36 43 22 29 2,34 163 29 33 0.40 99 19 34 1.02 93 29 34 1.26 72 38 36 0.95 33 5 37 0.50 60 6 37 0.91 60 35 37 4.03 47 35 38 1.37 160 64M2 42 1 UDS M 2 49 1 69 I 72 1 83 1 UDS I UDS 1 05 1 04M2 SQR 1 HTS HTS HTS HTS HTS HTS HTS HTS HTS HTS HTS HTS 16,2 2'10.5 1.4 18.5 0.3 18.2 18.1 10.4 17.9 10.4 18.3 IGA WAS PNDD IGA P 10%WAS CPR SCC RPG SLV SCC CPR IGA IGA SCC SCC CPR SCC gl TSP H g6 TSP H¹6 TSP H g6 TSP H¹6 TSP H g4 TSP C g6 TSP H¹6 TSP H¹6 TSP H g6 TSP H g6 TSP H g6 TSP H 8 9 4 4 5 27 6 6 7 7 6 7 740 740 740 740 740 720 740 740 740 740 740 740))L)IL)IL))L HL HL HL f)L HL HL HL HL PLG 36 30 36 38 0.7956 UDS 92 HTS HTS 17.0 19.2 IGA¹6 TSP H SCC g6 TSP ff 740 740)IL HLPLG SLV PLG SLV SLV PLG SLV SLV SLV SLV SLV SLV SLV SLV UDS UDS UDS M UDS M 77 56 55 73 M 77 91 M 76 H 09 M SQR H 90 38 38 2'5 05 31 39 0'2 47, 42 39 3.70 63 19 42 5.62 63 21 42 1.50 86 1 43 0.63 115 23 46 0.59 113 27 47 2.12 56 9 48 0.41 86 11 49 0.30 52 21 49 0.43 75 26 49 0.23 55 31 49 2.56 15 32 49 0.40 60 HTS HTS HTS f ITS HTS HTS)ITS HTS HTS HTS HTS HTS)ITS HTS 18.9 17.2 16.0 7.9 9.9 16.6 10.2 10.0 17.3 16.7 0.2 18.2 10.6 17.1 DRT IGA IGA IGA RPG SLV SCC CPR SCC SCC SCC SCC SCC SCC SCC SCC g6 TSP H g6 TSP H g6 TSP H gl TSP H g6 TSP C gl TSP H gl TSP H gl TSP H g)TSP fl¹I TSP H¹1 TSP fl gl TSP H gl TSP fl¹1 TSP H 7 7 7 7 27 7 8 9 9 9 9 9 9 9 740 740 740 740 720 740 740 740 740 740 740 740 740 740 f)L HL HL HL III HL HL HL HL HL HL HL HL HL RGKE EDDY CURREEIT IRSPECTIOR REPORT"'riday Eebruary 28, 1986 12:21 Plf PAGE 2 r~III PLANT: RG&E" GINNA OUTAGE: RG&E 1986 SGB REPORT: TUBES REQUIRING CORRECTIVE ACTION STEAM GENERATOR B INSPECTED FROM: HOT LEG ACT ROW COL VOLTS DEG IND'CH ELEV INCHES COMMENTS EXTENT REEL PS ID SlaV 7 50 0.73 SLV 31 52 0.96 PLG 1 53 2.07 SLV 21 55 1.32 SLV 24 50 0.58 PLG 30 50 3.23 PLG 38 59 1.00 PLG 38 60 0.95 SLV 8 69 1.03 SLV 9 70 0.70 PLG 30 71 1.90 PLG 21 76 1.04 PLG 22 76 1.15 SLV 3 70 1.76 PLG 2 80 6.69 PLG 19 80 0.61 PLG 20 80 0.75 END OF DATA 53 90 70 05 30 SQR 74 03 50 91 51 79 08 75 77 01 00 61 72 75 77 79 58, 90 92 70 72 02 38 89 56 91 42 94 M I HTS 1 HTS M 1 HTS 1 HTS 1 HTS M 2 HTS 1 HTS 1 HTS M 1 HTS M 1 HTS 1 HTS I HTS 1 HTS 1 HTS M 2 HTS 1 HTS M 1 HTS 17.4 SCC gf TSP 16.3 SCC 81 TSP 17.5 CHT SCC gl TSP 5.6 RPG SLV g6 TSP 13.8 SCC Pf TSP 16.9 SCC Elf TSP 10.0 SCC fff TSP 17,4 SCC Sf TSP 17.7 SCC 4'I TSP 14.6 SCC gl TSP 17.6 CPR SCC Pf TSP 17.4 SCC gf TSP 17~3 SCC gf TSP 17.6 SCC gf TSP 17.9 SCC gf TSP 16.7 SCC gf TSP 16.0 SCC gf TSP H 9 740 H 10 740 H 11 720 C 27 720 H 10 740 H 10 740 H 10 740 H 10 740 H 11 720 H ll 720 H 12 720 H 12 720 El~12 720 H 12 720 H 12 720 H 12 720 H 12 720 HL Hf.Hla HL EIL HL HL HL'l HL HI.Ella Ill.HL HL HL EEL STEAM GENERATOR"B" TUBES RECEIVING CORRECTIVE ACTION-FEBRUARY 1986 PLANT: GINNA GENERATOR: B TOTAL TUBES: 3260 S~CE 27'ELOED SLEEVE P~CE KECNANICAL PLUG~~~~P~~~~~~~~~~~~P~P.P~.~PP~~~~~~~P~~~~0~~~~S~~~~~~~~~SS~~~'S'~~~~~~~0~~~~~~~~~~~SS~~~~~~~'~S~~~~~S~~~~~~~'ES~S~.~ST~S~~-~~.S~I~~~P~~0~~~~~~~~~~~~PE~~P~OI C3 IZ 20 I I V Il C x~I C 4J a CO P~~~~P 0~P~..'~~~0~3~S~~~~~~~~~~~3~P~~~~~~~~-X5-so~~~P~~~P~PE~.~~~~~P'~P.~~~~~NOZZLE I n CII INLET (Hot Leg)-Primary Face I Cl CII I Rl CII I'I CCI COLUNNS I II CCI I CCI I ICI CO I I O CII HANKAY OBSERVATIONS The results of the examination indicates that intergranular attack and stress corrosion cracking is still active within the tubesheet cr evice regions on the inlet side of each steam generator.- The IGA/SCC, is primarily located in the"B" steam generator with 52 total indications detected, only 5 indications were detected in the"A" steam generator. Table III shows the steam generator IGA history.GINNA'S STEAM GENERATORS CREVICE CORROSION INDICATION HISTORY B-Steam Generator (A-Steam Generator) March 1979 December 1979 Not Sizeable 0, A-S/G 0-25%26"50%51-75%76-100%TOTAL (0)(0)B-S/G'OTAL April 1980 19, 1 (0)31 November 1980 April 1981 February 1982 October 1982 April 1983 March 1984 March 1985 27 11(3)5, 23 3(1)15 0 0(1)7(1)16 15 (0)(0)(0)(4)9(1)27(1)(2)14 13 59 51 3(2)9(Z)1 14(1)25 (5)52 Totals 91(5)Z6(3)40(l)64(3)92(1)(13)313 TABLE III The cause of the inlet tubesheet crevice corrosion indication is intergranular attack and stress corrosion cracking of the mil-annealed Inconel 600.This form of corrosion is the result of the tubesheet crevices having an alkaline environment. This crevice environment has developed over the years as deposits and active species like sodium and phosphate, have reacted, changing a neutral or inhibited crevice into the aggressive environment that presently exist.A large volume, typically<<20%TWD (Through Wall Dimension) wastage type condition exists just above the tubesheet secondary face.A sm'all percentage of the tubes, generally toward the center of the bundle, have this condition. Several of these tubes did have penetrations >ZOYo TPD and Z tubes in the"B" steam generator and 1 tube in the"A" steam generator had a potential>40%TWD as interpreted from the signal.Therefore these three tubes were sleeved.These tubes were affected by the original water chemistry conditions when phosphate was used as a buffering medium and'have not seen further degradation since 1975.Small indications of pr obable copper deposits were also found in the tubesheet crevice region randomly located throughout each steam generator. Based on studies performed with copper plated on Inconel tubing and the phase relationships of these signal responses at the different inspection frequencies the indications can be attributed to copper deposits and not a defect condition. A more extensive condition noted in the steam generators, primarily on the inlet side, is the minor denting at the tubesheet secondary face..Denting was also detected at the 1st, 2nd and 6th tube support plates randomly throughout the generator and in most cases was of greater magnitude in size.No tubes were found which obstructed the passage of a 0.7ZO" O.D.probe.In general, minor distortions of most of the tube support plate signals were seen.The denting phenomenon and minor distortions at the tubesheet and support plates can be attributed to secondary side corrosion product build-up in the annular region between the tube O.D.and the carbon steel support member.Comparisons with previous data does not indicate any change in the extent or magnitude of denting from what has been detected by previous inspections. Several indications were detected in the cold legs of the"A" 5"B" steam generators in'nd around tube R23-C46.A review of previous years data revealed these indications to be present.They appear as a shallow ID indication <20%which were confirmed visually to be an expansion of diameter within the tubesheet. This was caused by a cam-loclc expansion device which was used in earlier years to suspend lead blankets from the tubesheet primary face.In summary, the"A" Steam Generator had five (5)tubes that were found to have tubesheet crevice indications and one (I)tube had an area of previously detected wastage that exceeded the repair limit in the inlet.The"B" Steam Generator had fifty-two (52)tubesheet crevice indications and two (Z)tubes had areas of previously detected wastage that exceeded the repair limit in the inlet.One tube in the"A" Steam Generator had two (Z)indications at the third and fourth anti-vibration bar intersections. These indications were greater than Z0%but less than the repair limit.This tube will be re-examined at the next inspection to determine if there is an active fretting wear damage mechanism going on.In light of the fact that only this tube is exhibiting these indications, it is unlikely that fretting should be of a great concern. CORRECTIVE ACTION Table IV has been generated to identify the tubes with crevice indications or with indications which exceed the repair criteria.This table also shows the location and axial extent of the indication and what corrective action was taken on these tubes.Other than crevice indications, only three tubes exceeded the repair criteria.One 46%TWD indication was found 1.8" above the secondary side face of the hot leg tubesheet of the"A" steam generator tube R19-C50.A 42%TWD indication was found Z.3" above the secondary side face of the hot leg tubesheet, along with a 49%TWD indication was found 1.4" above the secondary side face of the hot leg tube sheet of the"B" steam generator, tubes R23-CZ4 and R22-CZ9, respectively. Three CE mechanical plugs which were installed in B-S/G in 1985 were pulled and inspected full length with the following results: R19-C34 revealed a 72%TWD-8.3" from the top of the secondary side tubesheet face, R21-C42 revealed a'7%TWD-9.9" from the top of the secondary side tubesheet face, R21-C55 revealed an 83%TWD-5.6" from the top of the secondary side tube sheet.All six of the above-mentioned tubes were sleeved"with Combustion Engineering 27" Sleeves and will remain in service.Table V has been generated to maintain a complete history of total tubes inspected total defects detected, and number of tubes requiring repair. TABLE 4 1986 CORRECTIVE ACTIOtlS"A" S G INLET ROW COL LOCATION CORRECTIVE ACTION 22 21 20 11 19 7"B" S G INLET 20 21 22 37 50 78-UDS (IGA)72 UDS (IGA)13 46 8 (SCC)HTS-17.2 HTS-18.9 HTS-14.9 HTS-16.5 HTS+1.8 HTS-17.9 CE SLEEVE CE SLEEVE CE SLEEVE CE SLEEVE CE SLEEVE CE SLEEVE ROW COL 1986%LOCATION CORRECTIVE ACTION 3 3 62 83 HTS" 17.5 HTS-18.0 CE MECH PLUG 2 11 9 18 6 7 6 29 16 18 30 6 6 9 10 11 13 15 15 17 19 21 56 97 84 59 UDS (SCC)65 72 71 78 19 (SCC)88 HTS-17.3 HTS-16.7 IITS-16.3 HTS-16.9 HTS-19.1 HTS-17.3 HTS-7.1 HTS-19'HTS-15.3 HTS-17.5 HTS" 17.3 CE tlECH PLUG CE MECH PLUG CE MECH PLUG CE MECH PLUG CE MECH PLUG CE SLEEVE CE SLEEVE CE MECH PLUG CE SLEEVE CE SLEEVE CE MECH PLUG 23 23 SQR 27 HTS-16.0 HTS-14.1 CE SLEEVE 32 23 23 24 64 42 HTS-16.2 HTS+, 2.3 CE MECH PLUG CE SLEEVE KEY HTS CE MECH PLUG, CE SLEEVE SQR UDS IGA SCC DRT HOT LEG TUBESHEET SECONDARY FACE COMBUSTION ENGINEERING MECHANICAL PLUG (REMOVABLE) COMBUSTION E11GINEERING 27" WELDED SLEEVE MULTIPLE STRESS CORROSION CRACKS (SQUIRRELS) -NOT QUANTIFIABLE UNDEFItlED SIGNAI.INTERGRANULAR ATTACK DEFECT STRESS CORROSION CRACK DEFECT DISTORTED ROLL TRANSITION SIGNAL ASTERISK DENOTES TUBE PLACED BACK IN SERVICE BY REMOVAL OF PREVIOUSLY ItlSTALLED CE MECH PLUGS AND THE INSTALLATION OF A CE SLEEVE TABLE CON'T 1986 CORRECTIVE ACTIONS G INLET RON COL 1986%LOCATION CORRECTIVE ACTIOtt 2 22'9 19 29 38 5 6 35 35 36 36 27 29 33 34 34 36 37'7 37 38 38 38 UDS 49 69 72 83 UDS UDS 85 84 SQR UDS 92 (IGA)(IGA)(IGA)(IGA)HTS HTS HTS HTS HTS HTS EITS HTS HTS HTS HTS HTS 18.5 1.4 18.5 8.3 18.2 18.1 18.4 17.9 18.4 18.3 17.0 19.2 CE MECH PLUG CE SLEEVE CE SLEEVE CE SLEEVE CE SLEEVE CE MECH PLUG CE SLEEVE CE SLEEVE CE tkECH PLUG CE MECH PLUG CE MECH PLUG 38 31 42 19 21 1 23 27 9 ll 21 26 31 32 7 31 1 21 24 38 38 38 8 9 30 21 22 3 2 19 20 38 39 39 42 42 43 46 47 48 49 49 49 49 49 50 52 53 55 58 58 59 60 69 70 71 76 76'8 80 80 80 UDS UDS UDS UDS 77 56 55 73 77 91 76 89 SQR 90 90 85 SQR 83 91 79 75 81 61 75 79 90 70 82 89 91 94 (DRT)(IGA)(IGA)(IGA)HTS HTS HTS HTS HTS HTS HTS HTS HTS IITS HTS HTS HTS HTS HTS EITS HTS HTS HTS HTS HTS HTS HTS HTS HTS HTS HTS HTS HTS HTS HTS 18.9 17.2 16.0 7.9 9.9 16.6 18.2 18.0 17.3 16.7 8.2 18.2 18.6 17.1 17.4 16.3 17,5 5.6 13.8 16.9 18.0 17.4 17.7 14.6 17.6 17.4 17.3 17.6 17.9 16.7 16,8 CE MECH PLUG CE SLEEVE CE IIECH PLUG CE SLEEVE CE SLEEVE CE MECH PLUG CE SLEEVE CE SLEEVE CE SLEEVE CE SLEEVE CE SLEEVE CE SLEEVE CE SLEEVE CE SLEEVE CE SLEEVE CE SLEEVE CE MECH PI UG'E SLEEVE CE SLEEVE CE MECH PLUG CE MECH PLUG CE tlECH PLUG CE,SLEEVE CE SLEEVE CE MECH PLUG CE MECH PLUG CE tlECH PLUG CE SLEEVE CE tlECH PLUG CE tlECH PLUG CE tlECH PLUG STEAM GE7KRATOR TUSE INSPECTION AN)CORRECTIVE ACTION HISTORY DATE NO.TUBES INSPECTED PRIMARY TO SEC&5)ARY~LEIUCEEE. TOTAL TUBES REQUIRING CORRECTIVE ACTION NO.DFFECTS TYPE OF DETERIORATION REQUIRING REPAIR>40%NO.TUBES NO.TUBES NO.TUBES PLUGGED SLEE~c PULLED COIEÃENT.Hot Cold Hot Cold A B A B A 8 A B A 8 IN FACTORY APRIL 1972 MARCH 1974 NOV.1974 MARCH 1975 JAN.1976 FEB.1976 APRIL 1975 APRIL 1977 JULY 1977 JAN, 1978 APRIL 1978 FEB.1979 3192 3192 100 3247 3247 1025 75 2003 268 1525 258 300 2049 325 2049 325 1714 1714 375 375 1050 3259 515 1098 516 1701 430 672 39 2174 442 1931 442 53 0 F 005 A S/0 0.091 B S/0 0.099 B S/0 0.0'12 B 8/0 o.oeo B s/0 19 13 0 0 0 11 2 2 15 I 5 8.15 5 WASTAGE WASTAGE CRACKING/WASTAGE WASTAGE WASTAGE CRACKING WASTAGE IO CRACKING CRACKING)/WASTAGE ID CRACKING CRACKING/WASTAGE 2-IGA I 0 0 IQ 0 2 0 I 0 0 19 0 2 0 0 2 39 2 0 15 13 I I 15 0 2 39 2 0 15 13 I 5 8 I 15 6 45 ll'6 11 OEC.1979 APRIL 1980 NOV, 1980 MAY 1981 FEB.1982 SEP.1982 APRIL 1983 MARCH 1984 MARCH=1985 FEB.1985 3138 325 3138 325 3137 525 3138 382 3137 633 ,3137 717 3135 3135 3134.523 3151 3141 3,1 40 3129 3096 3093 3087 3083 E 375 400 525 893 832 953 3087 770 3139 325 3'I 82 375 0.007 B S/0 700 B S/G 13 31 3 15 15 32 78 10 e7 54 11-IGA.2-WASTAGE"A" PITTING/"B" IGA IGA IGA, WASTAGE IGA, MECH.OAM'GA IGA.SCC IGA.SCC IGA.SCC.WASTAGE IGA.SCC.WASTAGE 13 13 Ie 28 23 70 2, 49 I 33 27 16 74 9 2 57 5'30 3 (2)(3)l4)Ie)Ie)(7)I 3 I 31------3--(I)TOTALS PERCENTAGES 4~2 11.7 137 384'I 28 3.9 290 8.8 126 201 12 201 3~8 6~I 3 6~I 4~I~3 SEE NOTE 7 STEAM GENERATOR TUBE INSPECTION AND CORRECTIVE ACTION HISTORY COMMENTS (1)Pulled R15 C55 and R17 C41 from the hot leg and R17 C40 from the cold.leg to determine IGA conditions in the"B" steam generator. R17 C41 and ECT indications at all'frequencies, R15 C44 had just 100 kHz Absolute ECT indication and R17 C40 had no ECT indication. Both hot leg tubes has approximately 50%IGA, R17 C41 had a 60%SCC indication associated with the IGA.(2)Manually sleeved five (5)tubes with nickel plated-Inconel 600 thermally treated sleeves.Three tubes had IGA indications, two others were preventatively sleeved.(3)Sleeved 16 tubes with co-extruded sleeves, 13 with defects with 3, preventatively. Pulled R21 C46 with a 100 kHz ECT indication, R7 C45 and R28 C45 which were clean.All tubes pulled were from the hot leg.(4)Recovery from the January 25, 1982 Tube Rupture Event included removing Z6 tube sections by EDM and ID Cutters along with the one tube pulled from the secondary side.(5)The four tubes identified with IGA in the"A" steam generator were sleeved with 22" tubesheet sleeves.The 78 tubes identified in the"B" steam generator with IGA and/or SCC in the crevice were repaired as follows: 41 tubes were sleeved with 36" brazed sleeves'tubes were sleeved with 28" brazed sleeves Z4 tubes were sleeved with 22" tubesheet sleeves 1 tube and 2 sleeves were plugged 1 tube R34 C54 was pulled for metallurgical analysis.TABLE V (CON'T) STEAM GENERATOR TUBE INSPECTION AND CORRECTIVE ACTION HISTORY COMMENTS (6)The two tubes identified with IGA in the crevice in the"A" steam generator I inlet were sleeved with ZO" tubesheet sleeves.One indication )409o TWD, in the U-bend was permanently plugged.The 70 tubes identified in the"B" steam generator were repaired as follows: 56 tubes were sleeved with 20" tubesheet sleeves 10 tubes were sleeved with 36" brazed sleeves 3 tubes were mechanically plugged (CE removeable) 1 tube was explosively plugged 1 tube was sleeved with a 36" brazed sleeve due to the domino effect.(7)'he five tubes identified with crevice indications in the"A" steam generator inlet were sleeved with Z7" Combustion Engineering Sleeves (CE).One tube identified with general O.D.indication above the secondary side tubesheet was also sleeved with a CE 27" sleeve.The 57 tubes identified in the"B" steam generator were repaired as follows: 27 tubes were sleeved with CE Z7" Sleeves Z7 tubes were mechanically plugged (CE removable) 3 CE Mechanical Plugs installed in 1985 were removed'and sleeved with 27" sleeves The present sleeve installation status is 83 brazed sleeves, 88 tube sheet sleeves, 30 welded CE sleeves in the"B" steam generator with 6 tubesheet sleeves and 6 welded CE sleeves in the"A" steam generator. TABLE V (CON'T)}}