DCL-02-065, Special Report 02-01: Results of Steam Generator Tube Eddy Current Inspections During Tenth Refueling Outage

From kanterella
Jump to navigation Jump to search
Special Report 02-01: Results of Steam Generator Tube Eddy Current Inspections During Tenth Refueling Outage
ML021640337
Person / Time
Site: Diablo Canyon Pacific Gas & Electric icon.png
Issue date: 05/28/2002
From: Oatley D
Pacific Gas & Electric Co
To:
Document Control Desk, Office of Nuclear Reactor Regulation
References
DCL-02-065
Download: ML021640337 (19)
v • d • e


Text

Pacific Gas and Electric Company David H. Oatley Diablo Canyon Power Plant Vice President PO.Box 56 Diablo Canyon Operations Avila Beach. CA 93424 805.545.4350 May 28, 2002 Fax: 805.545.4234 PG&E Letter DCL-02-065 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, D.C. 20555-0001 Docket No. 50-323, OL-DPR-82 Diablo Canyon Unit 2 Special Reort 02-01: Results of Steam Generator Tube Eddy Current Inspections During Unit 2 Tenth Refueling Outage

Dear Commissioners and Staff:

In accordance with Diablo Canyon Power Plant Technical Specification 5.6.10.b, this special report provides the results of steam generator (SG) tube eddy current inspections performed during the Unit 2 tenth refueling outage, completed in May 2001.

The enclosed tables provide the number and extent of tubes inspected in each SG, the location and percent through-wall of each indication identified, and identification of tubes plugged.

Sincerely, David H. Oatley ddm/469 Enclosure cclenc: Ellis W. Merschoff David L. Proulx Girija S. Shukla State of California Diablo Distribution A member of the STARS (Strategic Teaming and Resource Sharing) Attiance 'A C)CA Caltaway

  • Comanche Peak
  • Diablo Canyon
  • Pato Verde
  • South Texas Project a Wotf Creek

Enclosure PG&E Letter DCL-02-065 SPECIAL REPORT 02-01 RESULTS OF STEAM GENERATOR TUBE EDDY CURRENT INSPECTIONS DURING UNIT 2 TENTH REFUELING OUTAGE Enclosure PG&E Letter DCL-02-065 Introduction TS 5.6.10.b requires that the results of steam generator tube inspections be submitted to the NRC within 12 months following completion of the inspection. The report shall include:

1. Number and extent of tubes inspected,
2. Location and percent of wall thickness penetration for each indication of an imperfection, and
3. Identification of tubes plugged.

Table 1 provides the number and extent of tubes inspected in each SG.

Table 2 provides the location and percent through-wall of each indication identified, and identifies the tubes that were plugged in 2R1 0. One tube was preventively plugged due to data quality concerns, where no indication was detected by eddy current.

Notes:

1. Free span indications (e.g., manufacturing burnish mark) that had eddy current signals traceable to preservice inspection data are not considered as reportable indications and are not included in this report.
2. Table 2 provides axial outside diameter stress corrosion cracking (ODSCC) indications at TSPs that were confirmed by Plus Point. For simplicity, one indication per TSP is reported, even if multiple indications were reported by Plus Point. Bobbin distorted OD support signals (DOS) that were not confirmed by Plus Point are not reportable indications and are not included in this report. A discussion of DOS attributed to axial ODSCC are included in the 90 day report for voltage-based alternate repair criteria (ARC), submitted to the NRC in DCL-01 -086 dated August 21, 2001.

Abbreviations and Terms The following provides a definition of abbreviations and terms used in Tables 1 and 2.

SG Steam Generator Row Row Col Column Location SG location codes Inch Distance above or below the center line of the TSP or the top of TS, inches Bobbin Differential inside diameter coil probe

+Point Plus Point rotating probe TSP Tube support plate TS Tubesheet Indication Type of indication: Indication Code, anti-vibration bar (AVB) wear, or cold leg thinning (CLT)

ID/OD Location of crack-like indications on tube surface, either ID or OD

%TW Depth of indication as percent through-wall. 0% indicates a signal with shallow OD phase angle.

INDICATION CODES SAI Single axial indication (from +Point exam)

Note: SAI may be left in service for the following reasons:

"* Voltage-based ARC for axial ODSCC at TSP intersections

"* W* ARC for axial PWSCC in WEXTEX tubesheet

"* Less than 40% through-wall axial PWSCC at dented TSP intersections SCI Single circumferential indication (from +Point exam)

Enclosure PG&E Letter DCL-02-065 Table 1 Number and Extent of Tube Inspections During 2R10 SCOPE PROBE SG 21 SG 22 SG 23 SG 24 Full length (except Bobbin 100% 100% 100% 100%

Rows 1 and 2 U-bends)

Rows 1 and 2 U-bends + Point 100% 100% 100% 100%

Hot Leg top-of + Point 100% 100% 100% 100%

tubesheet

> 5 volt dented TSP + Point 100% 100% 100% 100%

intersections

>2 and < 5 volt dented + Point 20% at 1H 100% from 1H to 100% from 1H to 100% from 1H to TSP intersections 5H, 20% at 6H 3H, 20% at 4H 3H, 20% at 4H Hot leg roll plugs + Point NA 100% of plugs NA 100% of plugs installed in 2R7 installed in 2R7 Distorted OD bobbin + Point Per voltage- Per voltage- Per voltage- Per voltage signals at TSP based repair based repair based repair based repair intersections criteria criteria criteria criteria Distorted ID bobbin + Point 100% 100% 100% 100%

signals at TSP intersections Free span dings + Point 20% TSH to 1H 20% TSH to 5H 20% TSH to 3H 20% TSH to 3H Baseline TSP ligament + Point NA NA 100% 100%

indications Enclosure PG&E Letter DCL-02-065 Table 2 Location and Percent Through-Wall of Indications Identified During 2R10 SG Row Col Elev Inch Ind %TW ID/OD Reason for 2R10 Tube Plugging 21 2 2 2C -0.10 CLT 31 21 2 4 3C 0.13 CLT 3 21 2 47 2H -0.07 SAI OD 21 3 1 2C 0.00 CLT 31 21 3 4 2C -0.13 CLT 0 21 3 46 2H 0.05 SAI OD 21 3 59 TSH -1.10 SAI ID 21 4 1 2C -0.07 CLT 8 21 4 2 2C -0.08 CLT 32 21 4 3 2C -0.09 CLT 19 21 4 3 3C -0.07 CLT 5 21 4 94 1C -0.15 CLT 32 21 5 2 2C 0.02 CLT 3 21 5 17 2H -0.05 SAI OD >2VDOSandSAI-OD@2H 21 6 1 2C -0.06 CLT 6 21 6 77 TSH -1.27 SAI ID 21 7 1 2C 0.00 CLT 35 21 7 24 TSH -1.78 SAI ID 21 7 62 TSH -1.78 SAI ID 21 8 2 2C -0.04 CLT 0 21 8 3 2C -0.04 CLT 49 >40%TWCLT@2C 21 8 22 1H 0.04 SAI OD 21 8 32 TSH -1.73 SAI ID 21 9 49 TSH -2.00 SAI ID 21 10 2 2C -0.08 CLT 17 21 10 3 2C -0.10 CLT 0 21 11 27 1H 0.04 SAI OD >2VDOSandSAI-OD@IH 21 11 37 TSH -1.81 SAI ID 21 11 37 TSH -7.22 SAI ID 21 11 37 TSH -6.32 SAI ID 21 11 39 TSH -1.37 SAI ID 21 11 40 TSH -0.88 SAI ID 21 11 48 TSH -4.88 SAI ID 21 12 3 2C 0.02 CLT 8 21 12 30 1H -0.05 SAI OD 21 12 68 2H -0.02 SAI OD 21 12 68 2H 0.17 SAI OD 21 12 92 2C 0.02 CLT 9 21 13 3 2C -0.04 CLT 0 21 13 39 1H 0.06 SAI OD 21 13 39 1H -0.19 SAI OD 21 13 92 2C 0.04 CLT 0 21 15 32 TSH -0.42 SAI ID TSH Axial PWSCC Failed W*

21 18 43 1H 0.03 SAI OD Enclosure PG&E Letter DCL-02-065 Table 2 Location and Percent Through-Wall of Indications Identified During 2R1 0 SG Row Col Elev Inch Ind %TW ID/OD Reason for 2R10 Tube Plugging 29 21 19 48 7H 36.49 AVB wear "13,, -in R7 7W AQlRA AVRw.A~r I139 21 19 70 7H 50.12 AVBwear 16 21 20 48 7H 37.95 AVB wear 20 21 20 61 7H 37.81 AVB wear 15 21 21 70 7H 40.27 AVB wear 20 21 21 70 7H 69.47 AVB wear 9 21 22 8 1C 0.00 CLT 23 21 22 37 7H 25.51 AVB wear 22 21 22 63 7H 25.59 AVB wear 20 21 22 63 7H 40.98 AVB wear 23 21 22 63 7H 57.83 AVB wear 17 21 22 63 7H 73.26 AVB wear 25 21 23 53 7H 26.82 AVB wear 25 21 23 53 7H 42.78 AVB wear 27 21 23 53 7H 60.55 AVB wear 18 21 23 63 7H 27.38 AVB wear 12 21 23 63 7H 42.58 AVB wear 22 21 23 63 7H 60.61 AVB wear 37 21 23 64 7H 42.71 AVB wear 16 21 23 64 7H 60.57 AVB wear 28 21 23 65 7H 42.69 AVB wear 24 21 23 65 7H 60.63 AVB wear 36 21 23 65 7H 77.02 AVB wear 14 21 23 67 7H 28.06 AVB wear 17 21 23 70 TSH -1.36 SAI ID 21 23 71 7H 43.31 AVB wear 9 21 23 71 7H 60.60 AVB wear 25 21 23 72 7H 43.33 AVB wear 17 21 23 72 7H 60.93 AVB wear 19 21 23 72 7H 76.99 AVB wear 12 21 23 74 7H 26.90 AVBwear 24 21 24 39 7H 27.98 AVB wear 18 21 24 61 7H 44.33 AVB wear 17 21 24 61 7H 63.04 AVB wear 18 21 24 62 7H 27.26 AVB wear 16 21 24 63 7H 44.15 AVB wear 14 21 24 62 7H 62.84 AVB wear 15 21 24 63 7H 27.07 AVB wear 23 21 24 63 7H 44.43 AVB wear 26 21 2463 7,H 63.14 ,AVB wear 1 21 24 68 7H27.38 ,VB wear 25 21 25 9 3C -0.02 CLT 37 21 25 ,I ,1 ) n "1* *IT 4 I I ~'.

L. i I 'l* T 1 1 _____ _________ _________________

Enclosure PG&E Letter DCL-02-065 Table 2 Location and Percent Through-Wall of Indications Identified During 2R1 0 SG Row Col Elev Inch Ind %TW ID/OD Reason for 2R10 Tube Plugging 21 25 32 7H 46.43 AVB wear 22 21 25 32 7H 66.51 AVB wear 28 21 26 10 2C -0.15 CLT 39 21 26 29 7H 87.06 AVB wear 18 21 26 67 7H 28.63 AVB wear 28 21 26 67 7H 47.60 AVB wear 18 21 26 67 7H 68.13 AVBwear 26 21 26 67 7H 87.41 AVB wear 24 21 27 10 2C -0.15 CLT 31 21 27 11 2C -0.17 CLT 0 21 27 38 1H 0.04 SAI OD 21 27 42 7H 29.89 AVB wear 12 21 27 42 7H 49.67 AVB wear 36 21 27 42 7H 71.55 AVBwear 18 21 27 42 7H 91.73 AVB wear 20 21 27 48 1H 0.00 SAI OD 21 27 48 1H 0.03 SAI OD 21 27 64 7H 48.65 AVB wear 21 21 27 64 7H 70.91 AVB wear 31 21 27 64 7H 91.21 AVBwear 30 21 27 65 7H 29.08 AVB wear 11 21 27 65 7H 70.49 AVB wear 24 21 27 65 7H 90.47 AVB wear 18 21 27 66 7H 29.24 AVB wear 35 21 27 66 7H 49.13 AVBwear 34 21 27 66 7H 70.49 AVB wear 23 21 28 11 10 0.15 CLT 31 21 28 14 2C -0.15 CLT 35 21 29 11 2C -0.16 CLT 0 21 29 31 7H 75.84 AVB wear 13 21 29 36 7H 75.98 AVB wear 30 21 30 52 2H -0.02 SAI OD 21 32 79 4C -0.09 CLT I 21 33 59 7H 58.38 AVB wear 27 21 34 47 7H 33.64 AVB wear 22 >40%TWAVB Wear 21 34 47 7H 59.13 AVB wear 40 >40%TWAVB Wear 21 34 47 7H 88.46 AVB wear 23 >40%TW AVB Wear 21 34 47 7H 115.63 AVB wear 29 >40%TWAVB Wear 21 34 48 7H 88.22 AVB wear 20 21 34 48 7H 114.99 AVBwear 36 21 34 53 7H 115.08 AVBwear 15 21 35 38 7H 59.35 AVB wear 30 21 35 77 4C 0.09 CLT 39 21 36 19 1C 0.44 CLT 20 Enclosure PG&E Letter DCL-02-065 Table 2 Location and Percent Through-Wall of Indications Identified During 2R10 SG Row Col Elev Inch Ind %TW ID/OD I Reason for 2R10 Tube Plugging n* n37 1-1IT r) 21 36 35 7H 62.61 CVBwear 36 21 36 53 7H 34.34 ,AVB wear 22 21 36 53 7H 62.40 AVBwear 25 21 36 54 7H 34.39 AVBlwear 18 21 36 54 7H 62.60 AVBwear 34 21 37 19 2C -0.06 CLT 34 21 37 21 1C 0.18 CLT 35 21 38 46 2H 0.00 SAI OD 21 39 58 3H 0.07 SAI OD SAI-OD @ 3H Wedge 21 40 37 2H 0.02 SAI OD 21 42 32 1C 0.00 CLT 0 21 44 36 3C -0.30 CLT 3 22 1 51 7H 3.83 SAI SAI-IDin U-bend 22 2 23 1H 0.02 SAI 27 ID 22 2 26 1H -0.62 SAI 61 ID SAI-ID>40%TW@ 1H 22 2 36 1H -0.11 SCl OD SCI-OD @ IH 22 2 93 2C -0.08 SL 20 I 22 2 94 2C -0.04 CLT 25 SAI-ID >40%TW@ 1H 22 3 34 1H -0.49 SAI 44 ID 22 4 2 2C -0.09 CLT 29 22 4 2 2C 0.02 CLT 6 22 4 28 1H 0.22 SAI 32 ID 22 4 34 4H 0.17 SAI 20 ID, 22 4 83 2C -0.15 CLT 6 22 4 93 2C -0.15 CLT 6 22 5 1 IC -0.13] CLT 24 22 5 3 1H -0.04 SAI 32 ID 22 5 18 TSH -0.93 SAI ID, 22 5 26 1H -0.20 SAI 39 ID 22 5 33 1H -0.-30 SAI 37 ID 22 5 41 2H -0.04 SAI OD 22 6 24 1H -0.37 SAI 20 ID 22 6 29 1H -0.16 SCI OD -SCI-OD @ 1H 22 6 30 1H 0.17 SCI ID SCI-ID@ 1H 22 6 31 1H -0.08 SAI 20 ID 22 6 361 1H 1-0.15 SAI 39 ID 22 6 93 1C 10.04 CLT 47 >40%TW CLT @lIC 22 61 93 2C -0.08 CLT 35 >40%TW CLT @ 1lC 22 6 93 4C 0.06 CLT 6 >40%TW CLT @ 1lC SAI 26 ID r22 7 27 1H 0.21 22 7 32 1H -0.29 SAI 29_I 22 7 73 2H 0.00 SAI OD 22 7 821 1H -0.07 SAI OD I Enclosure PG&E Letter DCL-02-065 Table 2 Location and Percent Through-Wall of Indications Identified During 2R10 SG Row Col Elev Inch Ind %TW ID/OD Reason for 2R10 Tube Plugging 22 7 93 2C -0.09 CLT 36 22 8 3 2C -0.15 CLT 0 22 8 26 1H 0.07 SAI 62 ID SAI-ID >40%TW 1H 22 8 36 1H -0.21 SAI 37 ID 22 8 43 4H -0.02 SAI 37 ID 22 8 93 2C -0.06 CLT 1 22 9 9 1H 0.02 SAI OD 22 9 32 1H -0.12 SAI 29 ID 22 10 2 3C 0.00 CLT 18 22 10 48 TSH -2.90 SAI ID_ _

22 10 56 TSH -1.05 SAI ID 22 10 93 2C -0.04 CLT 37 22 11 19 1H -0.52 SAI 42 ID SCl-IDand SAI-ID a 1H 22 11 19 1H 0.26 SCI ID SCI-ID and SAI-ID a 1H 22 11 70 1H 0.03 SAI OD 22 11 92 2C -0.08 CLT 41 >40%TWCLT @2C 22 12 39 1H -0.12 SAI 29 ID 22 12 71 1H -0.20 SAI OD 22 13 3 TSC -0.06 CLT 21 22 13 3 2C -0.06 CLT 24 22 13 23 1H 0.27 SCl ID SCID @.1H 22 13 25 3H -0.07 SAI 34 ID 22 13 41 1H -0.07 SAI 32 ID 22 13 43 TSH -1.34 SAI ID 22 14 15 2H -0.27 SAI 43 ID SAI-0D>40%TW@2H 22 14 45 1H 0.01 SAI 20 ID 22 15 22 1H 0.03 SAI 31 ID 22 15 42 1H 0.07 SAI 23 ID 22 15 51 1H -0.12 SAI 20 ID 22 15 73 1H 0.12 SAI OD 22 16 30 2H -0.18 SAI OD 22 16 39 4H -0.09 SAI 40 ID SAI-ID >40%TW @ 4H 22 16 39 4H -0.01 SAI 37 ID SAI-ID >40%TW @4H 22 16 49 1H -0.17 SAI 34 ID 22 16 50 1H -0.04 SAI OD 22 17 12 1H 0.27 SAI 30 ID 22 17 88 1H 0.15 SAI OD 22 18 21 1H -0.12 SAI OD 22 18 51 1H -0.11 SAI 29 ID SAI-I D >40%TW@a 1H 22 18 51 1H -0.22 SAI 55 ID SAI-ID_>40%TW @ 1H 22 18 82 1H 0.00 SAI OD 22 19 7 1H -0.13 SCI ID SCI-ID IH 22 19 9 1H 0.28 SCI ID SCI-ID@ 1H Enclosure PG&E Letter DCL-02-065 Table 2 Location and Percent Through-Wall of Indications Identified During 2R1 0 SG Row Col Elev Inch Ind %TW ID/OD Reason for 2R10 Tube Plugging 22 19 15 1H 0.10 SAI 20 ID 22 19 17 1H -0.46 SAI 25 ID 22 19 52 7H 37.16 AVB wear 15 22 19 61 1H -0.02 SAI OD 22 19 63 7H 36.09 AVB wear 23 22 19 63 7H 50.20 AVB wear 30 22 19 65 7H 37.52 AVB wear 33 22 19 65 7H 50.13 AVBwear 21 22 19 65 7H 50.86 AVBwear 18 22 19 65 7H 63.95 AVB wear 28 22 19 65 7H 64.12 AVBwear 22 22 19 75 1H 0.09 SAI OD 22 19 78 2H 0.01 SAI OD 22 19 81 2H -0.04 SAI OD 22 20 55 7H 38.36 AVB wear 18 22 20 55 7H 66.66 AVB wear 19 22 20 58 7H 52.74 AVB wear 17 22 20 65 7H 37.49 AVB wear 27 22 20 65 7H 38.04 AVB wear 36 22 20 65 7H 52.43 AVB wear 35 22 20 65 7H 67.69 AVB wear 28 22 21 23 2H 0.00 SAI 43 ID SAI-ID >40%TW@ 2H 22 21 36 7H 40.30 AVB wear 14 22 21 40 1H -0.19 SAI 26 ID 22 21 41 1H 0.34 SAI 29 ID 22 21 47 7H 40.02 AVB wear 25 22 21 85 2H 0.08 SAI OD 22 22 31 7H 40.45 AVB wear 31 22 22 44 4H -0.34 SAI 36 ID 22 22 45 1H -0.02 SAI 46 ID SA-ID >40%TW@ IH 22 22 63 7H 25.40 AVB wear 25 22 22 63 7H 40.67 AVB wear 27 22 22 63 7H 57.27 AVB wear 33 22 22 63 7H 74.45 AVB wear 10 22 22 67 7H 41.24 AVB wear 23 22 22 67 7H 58.44 AVB wear 35 22 22 69 7H 24.38 AVB wear 21 22 22 69 7H 40.89 AVB wear 16 22 22 69 7H 57.80 AVB wear 22 22 22 87 1C -0.21 CLT 4 22 23 31 7H 28.10 AVBwear 23 22 23 31 7H 42.37 AVB wear 24 22 23 31 7H 60.06 AVB wear 21 22 23 31 7H 79.97 AVB wear 19 Enclosure PG&E Letter DCL-02-065 Table 2 Location and Percent Through-Wall of Indications Identified During 2R1 0 SG Row Col Elev Inch Ind %TW ID/OD Reason for 2R10 Tube Plugging 22 23 32 7H 42.17 AVBwear 25 22 23 32 7H 78.13 AVBwear 13 22 23 38 7H 60.55 AVB wear 25 22 23 40 7H 42.92 AVB wear 14 22 23 40 7H 60.17 AVB wear 14 22 23 40 7H 78.14 AVBwear 18 22 23 41 7H 26.85 AVB wear 19 22 23 41 7H 42.94 AVB wear 25 22 23 41 7H 43.44 AVB wear 30 22 23 41 7H 60.63 AVB wear 32 22 23 44 7H 27.50 AVB wear 28 22 23 44 7H 60.67 AVB wear 35 22 23 49 7H 27.72 AVB wear 28 22 23 49 7H 43.87 AVB wear 36 22 23 49 7H 60.76 AVB wear 29 22 23 53 7H 27.05 AVB wear 19 22 23 53 7H 43.17 AVB wear 36 22 23 53 7H 60.48 AVB wear 39 22 23 77 2H 0.00 SAI OD 22 24 39 1H 0.10 SAI 40 ID SAI-ID >40%TW@ 1H 22 24 87 2C -0.17 CLT 31 22 25 13 1H 0.04 SAI OD 22 25 21 1H -0.02 SAI OD 22 25 44 1H 0.10 SAI OD 22 25 44 1H 0.09 SAI OD 22 25 44 5H 0.00 SAI 20 ID 22 25 70 7H 65.49 AVB wear 12 22 26 64 7H 46.82 AVB wear 33 22 26 64 7H 67.50 AVB wear 31 22 26 65 7H 26.79 AVB wear 17 22 26 65 7H 47.08 AVB wear 24 22 26 65 7H 67.63 AVB wear 33 22 26 65 7H 89.03 AVB wear 18 22 27 23 1H -0.28 SAI 46 ID SA-ID >40%TW@ 1H 22 27 32 7H 29.01 AVBwear 27 >40%TWAVB Wear 22 27 32 7H 47.78 AVB wear 37 >40% TW AVB Wear 22 27 32 7H 48.81 AVB wear 16 >40% TWAVB Wear 22 27 32 7H 70.09 AVB wear 40 >40% TWAVB Wear 22 27 44 7H 29.41 AVB wear 21 22 27 44 7H 48.82 AVB wear 16 22 27 44 7H 70.84 AVB wear 33 22 27 49 7H 49.11 AVBwear 15 22 27 49 7H 70.42 AVB wear 25 22 27 49 7H 91.95 AVBwear 12

- 10-

Enclosure PG&E Letter DCL-02-065 Table 2 Location and Percent Through-Wall of Indications Identified During 2R10 SG Row Col Elev Inch Ind %TW ID/OD Reason for 2R10 Tube Plugging 22 27 55 7H 48.93 AVB wear 32 22 27 57 7H 27.91 AVB wear 14 22 27 58 7H 70.36 AVB wear 24 22 27 58 7H 92.91 AVB wear 10 22 27 59 1H -0.53 SAI 46 ID SAI-ID>40%TW@IH 22 28 15 TSH -10.57 SAI ID 22 28 15 TSH -19.34 SAI ID 22 28 15 TSH -18.81 SAI ID 22 28 15 TSH -2.39 SAI ID 22 28 15 TSH -1.92 SAI ID 22 28 32 7H 30.74 AVB wear 20 22 28 32 7H 49.69 AVB wear 31 22 28 32 7H 50.39 AVB wear 36 22 28 32 7H 72.95 AVB wear 37 22 28 38 1H 0.00 SAI 34 ID 22 28 40 7H 50.70 AVB wear 34 22 28 40 7H 72.79 AVB wear 21 22 28 40 7H 73.02 AVB wear 23 22 28 40 7H 95.35 AVBwear 18 22 28 40 7H 95.69 AVB wear 17 22 28 53 2H 0.02 SAI OD 22 28 64 7H 50.27 AVB wear 11 22 28 64 7H 72.58 AVB wear 24 22 28 66 7H 72.63 AVB wear 18 22 28 72 7H 93.96 AVB wear 28 22 29 36 7H 75.40 AVB wear 16 22 29 41 7H 30.71 AVB wear 10 22 29 41 7H 52.02 AVB wear 21 22 29 41 7H 98.94 AVB wear 12 22 29 42 7H 30.64 AVB wear 14 22 29 42 7H 51.71 AVBwear 15 22 29 45 7H 30.88 AVB wear 17 22 29 45 7H 51.78 AVB wear 33 22 29 45 7H 75.84 AVB wear 30 22 29 45 7H 99.25 AVB wear 17 22 29 51 7H 29.61 AVBwear 11 22 29 51 7H 51.90 AVBwear 18 22 29 51 7H 75.77 AVB wear 15 22 29 54 7H 52.15 AVB wear 25 22 29 54 7H 75.94 AVB wear 26 22 29 83 2C -0.04 CLT 23 22 30 14 2C -0.13 CLT 14 22 30 82 2C -0.15 CLT 6 22 31 14 2C -0.19 CLT 16 Enclosure PG&E Letter DCL-02-065 Table 2 Location and Percent Through-Wall of Indications Identified During 2R10 SG Row Col Elev Inch Ind %TW ID/OD Reason for2R10 Tube Plugging 22 31 25 TSH -2.16 SAI ID 22 31 29 2H 0.03 SAI OD 22 31 80 2C -0.09 CLT 35 22 31 80 3C -0.17 CLT 9 22 32 16 2C -0.21 CLT 1 22 32 56 7H 56.35 AVB wear 20 22 32 56 7H 83.19 AVBwear 24 22 32 56 7H 109.97 AVB wear 'i3 22 32 79 3C -0.02 CLT 13 22 32 79 7H 107.19 AVB wear 16 22 33 17 2C -0.13 CLT 24 22 33 50 2H -0.06 SAI OD 22 33 52 7H 32.76 AVB wear 15 22 33 52 7H 33.03 AVB wear 16 22 33 52 7H 59.11 AVB wear 33 22 33 52 7H 86.08 AVB wear 29 22 33 52 7H 86.99 AVBwear 22 22 33 53 7H 58.09 AVB wear 14 22 33 53 7H 113.31 AVBwear 13 22 33 65 7H 57.95 AVBwear 18 22 34 66 7H 59.94 AVBwear 14 22 34 66 7H 116.03 AVB wear 11 22 34 71 7H 87.25 AVB wear 14 22 34 74 7H 60.16 AVB wear 12 22 34 77 2C -0.11 CLT 2 22 34 79 2C -0.17 CLT 23 22 35 78 3C 0.07 CLT 36 22 36 40 7H 34.70 AVB wear 20 22 36 42 7H 33.77 AVB wear 29 22 36 42 7H 62.08 AVB wear 26 22 36 56 2H -0.17 SAI OD 22 37 49 7H 96.03 AVB wear 22 22 37 50 7H 95.46 AVB wear 24 22 37 56 7H 64.16 AVB wear 31 22 39 23 2C -0.21 CLT 20 22 39 27 7H 100.94 .VIBwear 24 22 39 35 2H 0.04 SAI OD SAI-OD @ 2H Wedge 22 39 69 2C 0.13 CLT 19 22 39 71 IC -0.13 CLT 5 22 40 27 2C -0.20 CLT 26 22 40 31 2C -0.21 CLT 10 22 40 57 7H 35.25 AVBwear 15 22 40 57 7H 68.70 AVBwear 19 22 40 68 1C -0.26 CLT 31

- 12-

Enclosure PG&E Letter DCL-02-065 Table 2 Location and Percent Through-Wall of Indications Identified During 2R10 SG Row Col Elev Inch Ind %TW ID/OD Reason for 2R10 Tube Plugging 22 40 71 1C -0.24 CLT 35 22 41 26 2C -0.13 CLT 11 22 41 39 7H 36.98 AVBwear 11 22 42 28 2C -0.26 CLT 42 >40%TW CLT @ 2C 22 42 31 2C -0.24 CLT 12 22 42 33 2C -0.17 CLT 33 22 42 35 2C -0.15 CLT 27 22 42 60 2C -0.11 CLT 26 22 42 63 3C -0.09 CLT 62 >40%TW CLT @ 3C 22 42 63 4C -0.23 CLT 24 >40%TW CLT @ 3C 22 43 31 2C -0.26 CLT 27 22 43 32 2C -0.24 CLT 27 22 43 33 2C -0.24 CLT 33 22 44 44 1H -0.01 SAI OD 22 44 58 2C -0.15 CLT 21 22 45 37 2C -0.13 CLT 11 22 45 45 2C -0.26 CLT 17 22 45 53 2C -0.13 CLT 29 23 2 2 2C -0.02 CLT 3 23 2 75 Preventive, U-bend data quality 23 2 91 TSH -0.69 SAI ID 23 3 55 1H 0.02 SAI OD 23 3 69 TSH -0.95 SAI ID 23 3 94 2C 0.07 CLT 6 23 5 5 3H -0.08 SAI OD >2V DOS and SAI-OD @ 3H 23 5 51 TSH -2.00 SAI ID 23 5 55 TSH -2.00 SAI ID 23 6 54 1H -0.03 SAI OD >2V DOS and SAI-OD Q 1H 23 6 77 TSH -1.68 SAI ID 23 7 1 1C -0.07 CLT 10 23 7 52 TSH -1.22 SAI ID 23 7 59 TSH -1.35 SAI ID 23 7 92 TSH -0.76 SAI ID 23 8 2 1C -0.04 CLT 38 23 8 55 1H -0.03 SAI OD 23 8 93 TSH -0.71 SAI ID 23 9 63 TSH -1.11 SAI ID 23 9 93 2C -0.11 CLT 24 23 10 92 2C -0.13 CLT 30 23 10 93 3C 0.06 CLT 16 23 12 8 2H -0.04 SAI OD 23 12 48 TSH -2.14 SAI ID 23 12 92 2C -0.04 CLT 26 23 12 93 2C 0.02 CLT 30

- 13-

Enclosure PG&E Letter DCL-02-065 Table 2 Location and Percent Through-Wall of Indications Identified During 2R1 0 SG Row Col Elev Inch Ind %TW ID/OD Reason for 2R10 Tube Plugging 23 14 24 TSH -1.86 SAI ID 23 14 91 IC 0.00 CLT 31 23 14 92 2C -0.04 CLT 20 23 16 24 TSH -1.34 SAI ID 23 17 34 2H 0.01 SAI OD 23 17 43 2H 0.04 SAl I OD 23 17 43 2H 0.01 SAI OD 23 17 72 TSH -0.78 SAI ID 23 18 48 1H -0.03 SAI OD 23 18 50 1H -0.03 SAI OD 23 18 50 1H -0.10 SAI OD 23 18 50 1H -0.04 SAI OD 23 19 41 7H 37.40 AVB wear 24 23 19 56 7H 50.75 AVBwear 19 23 19 71 TSH -1.94 SAI ID 23 20 32 1H 0.02 SAI OD 23 21 38 TSH -1.35 SAI ID 23 21 78 3H -0.05 SAI 25 ID 23 21 83 TSH -0.93 SAI ID 23 22 30 7H 42.59 AVB wear 31 23 22 78 IH -0.10 SAI 66 ID SAI-ID >40%TW@ 1H 223 3 9 IC -0.28 CLT 1 23 23 40 7H 27.15 AVB wear 25 23 23 40 7H 43.25 AVB wear 18 23 23 40 7H 60.59 AVB wear 22 23 23 40 7H 77.37 AVB wear 16 23 23 41 7H 44.08 AVB wear 17 23 23 41 7H 60.50 AVB wear 18 23 23 42 7H 31.40 AVBwear 19 23 23 42 7H 44.26 AVB wear 25 23 23 42 7H 60.52 AVB wear 32 23 23 43 7H 43.73 AVB wear 15 23 23 54 7H 44.37 AVB wear 20 23 23 54 7H 59.91 AVB wear 15 23 23 54 7H 76.03 AVB wear 12 23 23 64 7H 60.94 AVB wear 21 23 24 8 IC -0.04 CLT 40 CLT>40%TW@ 1C 23 24 16 1H 0.03 SAI OD 23 24 26 2H 0.02 SAI OD >2V DOS and SAI-OD @ 2H 23 25 37 TSH -1.43 SAI ID 23 27 59 1H 0.02 SAI OD >2V DOS and SAI-OD @ 1 H 23 28 12 TSH -2.02 SAI ID 23 29 15 2C -0.17 CLT 0 23 29 61 7H 51.53 AVB wear 20 Enclosure PG&E Letter DCL-02-065 Table 2 Location and Percent Through-Wall of Indications Identified During 2R1 0 SG Row Col Elev Inch Ind %TW ID/OD Reason for 2R10 Tube Plugging 23 32 55 TSH -0.89 SAI ID 23 33 16 3C -0.04 CLT 24 23 33 36 7H 59.36 AVB wear 35 23 33 36 7H 85.80 AVB wear 31 23 33 42 7H 85.80 AVB wear 19 23 33 67 7H 58.99 AVB wear 14 23 33 67 7H 86.10 AVB wear 21 23 34 51 7H 61.16 AVBwear 19 23 34 51 7H 89.50 AVB wear 28 23 34 54 7H 60.84 AVB wear 30 23 34 54 7H 88.48 AVB wear 38 23 34 58 7H 60.40 AVB wear 22 23 34 58 7H 88.43 AVB wear 16 23 36 19 IC -0.02 CLT 23 23 36 36 7H 63.94 AVB wear 24 23 36 36 7H 93.58 AVB wear 21 23 36 36 7H 123.12 AVB wear 22 23 36 38 7H 93.30 AVB wear 17 23 38 21 2C -0.17 CLT 40 CLT>40%TW@2C 23 39 45 1H 0.12 SAI OD 23 41 66 2C -0.04 CLT 4 23 42 31 IC -0.18 CLT 19 23 42 64 2C -0.10 CLT 11 23 42 65 2C -0.13 CLT 0 23 43 35 IC 0.13 CLT 38 23 43 65 2C -0.10 CLT 38 23 44 41 2C -0.17 CLT 28 23 44 42 3H -0.03 SAI OD 23 45 37 TSH -1.66 SAI ID 23 45 38 TSH -2.52 SCl ID SCI-ID TSH 23 45 46 2C -0.27 CLT 28 23 45 56 1H 0.27 SAI 20 ID 23 45 56 2C -0.10 CLT 1 23 45 57 3C -0.11 CLT 30 23 45 59 3C -0.23 CLT 17 23 46 46 2C -0.22 CLT 0 23 46 48 2C -0.22 CLT 27 23 46 51 2C -0.21 CLT 8 24 2 10 TSH -1.34 SAI ID 24 2 29 TSH -2.26 SAI ID 24 2 29 TSH -4.37 SAI ID 24 2 47 3H -0.02 SAI 0D 24 2 47 3H -0.01 SAI OD 24 2 93 2C -0.16 CLT 4 Enclosure PG&E Letter DCL-02-065 Table 2 Location and Percent Through-Wall of Indications Identified During 2R10 SG Row Col Elev Inch Ind %TW ID/OD Reason for 2R10 Tube Plugging 24 3 5 TSH -1.35 SAI ID 24 3 12 TSH -2.21 SAI ID 24 3 12 TSH -2.58 SAl ID 0.01 SAI OD >2V DOS and SAI-OD IH 24 3 51 1H 24 3 93 2C -0.09 CLT 36 24 4 2 1C 0.00 CLT 40 >40%TWCLT @ 1C 24 4 35 TSH -1.81 SAI ID SAI OD >2VDOSandSAI-OD IH 24 4 45 1H -0.02 24 5 36 TSH -1.91 SAI ID 24 5 37 TSH -3.78 SAI ID 24 5 37 TSH -4.13 SAI ID

-0.12 SAI OD >2VDOSandSAI-OD IH 24 5 48 1H 24 5 53 TSH -1.79 SAI ID 24 5 93 1C -0.13 CLT 13

-0.14 SAI 51 ID SAI-ID >40%TW 3H 24 6 27 3H 24 6 33 TSH -2.58 SAI ID 24 7 4 TSH -1.18 SAI ID 24 7 38 TSH -4.27 SAI ID 24 7 38 TSH -6.89 SAI ID 24 7 62 1H -0.04 SAI OD >2VDOSandSAI-OD@H 24 8 22 2H -0.08 SAI 41 ID SAI-ID>40%TW @2H

-0.07 SAI OD D >2VDOSand SAI-OD 1H 24 8 63 1H 24 8 69 1H -0.04 SAI OD 24 10 11 1H 0.00 SAI OD 24 10 76 2H -0.17 SAI OD 24 10 92 2C 0.00 CLT 2 24 11 17 3H 0.00 SAI 42 ID SAI-ID >40%TWQ 3H 24 12 17 3H 0.19 SAI 23 ID 24 13 4 TSH -1.34 SAI ID 24 13 40 TSH -1.55 SAI ID

-0.15 SAI OD >2V DOS and SAI-OD 1H 24 13 63 1H 24 13 66 2H -0.01 SAI OD 24 14 53 3H 0.05 SAI 22 ID 24 15 10 TSH -0.86 SAI ID 24 15 45 2H 0.01 SAI OD 24 16 10 TSH -2.00 SAI ID 24 16 11 3H -0.08 SAI 28 ID 24 16 42 1H -0.09 SAI OD 24 16 57 2H 0.04 SAI OD >2V DOS and SAI-OD a I1H 24 16 84 2H 0.07 SAI OD 24 19 29 7H 26.04 AVBwear 15 24 19 29 7H 37.52 AVBwear 19 24 19 29 7H 62.28 AVB wear 11 419731 7H 1.61.36 AVB wear 23

- 16 -

Enclosure PG&E Letter DCL-02-065 Table 2 Location and Percent Through-Wall of Indications Identified During 2R1 0 SG Row Col Elev Inch Ind %TW ID/OD Reason for 2R10 Tube Plugging 24 19 84 1H 0.04 SAI OD 24 19 84 2H -0.10 SAI OD 24 19 84 2H -0.09 SAI OD 24 19 84 2H 0.02 SAI OD 24 19 88 1H -0.01 SAI OD 24 20 47 TSH -1.43 SAI ID 24 20 83 1H 0.00 SAI OD 24 21 45 1H 0.06 SAI OD 24 22 7 2H -0.01 SAI OD 24 22 30 7H 41.40 AVBwear 23 24 22 30 7H 42.06 AVB wear 23 24 22 30 7H 58.77 AVB wear 30 24 22 30 7H 73.93 AVB wear 16 24 22 47 2H 0.02 SAI OD 24 22 47 2H 0.11 SAI OD 24 23 52 7H 76.10 AVBwear 15 24 23 61 7H 43.17 AVBwear 21 24 23 61 7H 60.69 AVB wear 14 24 23 63 7H 61.01 AVBwear 29 24 23 70 7H 43.06 AVBwear 11 24 23 70 7H 75.13 AVB wear 14 24 24 26 TSH -1.75 SAI ID 24 24 29 7H 28.56 AVB wear 20 24 24 29 7H 63.49 AVB wear 8 24 24 29 7H 79.93 AVBwear 11 24 24 65 7H 25.92 AVB wear 22 24 24 65 7H 44.89 AVB wear 18 24 24 65 7H 62.50 AVB wear 22 24 24 73 2H 0.07 SAI OD 24 24 73 2H 0.05 SAI OD 24 24 84 1H -0.09 SAI OD >2V DOS and SAI-OD @I H 24 24 87 1C -0.15 CLT 2 24 25 64 TSH -1.14 SAI ID 24 25 67 7H 27.20 AVB wear 21 24 25 67 7H 66.06 AVB wear 20 24 25 82 1H -0.05 SAI OD 24 26 45 TSH -3.36 SAI ID 24 27 69 2H 0.04 SAI OD >2V DOS and SAI-OD @ 2H 24 29 35 1H -0.09 SAI OD >2VDOSandSAI-OD@IH 24 29 40 7H 30.12 AVB wear 22 24 29 40 7H 52.43 AVB wear 37 24 29 40 7H 75.30 AVB wear 26 24 29 40 7H 98.29 AVB wear 15 24 30 36 3H -0.02 SAI OD

- 17-

Enclosure PG&E Letter DCL-02-065 Table 2 Location and Percent Through-Wall of Indications Identified During 2R10 SG Row Col Elev Inch Ind %TW ID/OD Reason for 2R10 Tube Plugging 24 30 81 2C 0.04 CLT 0 24 30 83 2C -0.02 CLT 0 24 31 31 1H -0.08 SAI OD 24 31 31 2H -0.15 SAI OD 24 31 45 1H -0.08 SAI OD >2V DOS and SAI-OD @ IH 24 31 45 TSH -1.78 SAI ID >2V DOS and SAI-OD @ 1 H 24 31 63 2H -0.02 SAI OD 24 31 65 7H 30.42 AVB wear 25 24 31 79 IC 0.02 CLT 0 24 31 80 1C 0.00 CLT 35 24 31 82 1C 0.17 CLT 0 24 31 82 2C -0.02 CLT 0 24 32 16 1C -0.22 CLT 30 24 33 48 7H 32.30 AVB wear 23 24 33 48 7H 111.43 AVBwear 17 24 33 50 7H 57.52 AVB wear 10 24 33 54 7H 31.76 AVBwear 18 24 33 54 7H 111.14 AVB wear 13 24 33 60 7H 58.22 AVB wear 36 24 34 43 3H 0.00 SAI OD 24 34 43 3H -0.22 SAI OD 24 34 61 7H 32.78 AVB wear 16 24 34 61 7H 88.37 AVB wear 25 24 34 79 iC 0.04 CLT 25 24 35 28 1H -0.07 SAI OD 24 36 48 2H 0.12 SAI OD >2V DOS and SAI-OD @ 2H 24 37 37 3H -0.12 SAI OD SAI-OD @ Wedge @ 3H 24 38 35 3H -0.03 SAI OD SAI-OD @ Wedge @ 3H 24 38 47 2H 0.06 SAI OD >2V DOS and SAI-OD @ 2H 24 38 60 2H -0.02 SAI OD >2V DOS and SAI-OD @ 2H 24 39 38 2H 0.00 SAI OD SAI-OD @ Wedge @ 2H 24 39 51 7H 35.41 AVB wear 20 24 39 51 7H 67.27 AVB wear 13 24 39 62 7H 100.86 AVB wear 19 24 40 30 1H -0.07 SAI OD 24 41 33 2H -0.08 SAI OD SAI-OD @ Wedge @ 2H 24 42 41 2H 0.06 SAI OD 24 42 48 2H 0.05 SAI OD >2V DOS and SAI-OD @ 2H 24 44 45 2H -0.13 SAI OD 24 44 45 2H 0.02 SAI OD

Retrieved from "https://kanterella.com/w/index.php?title=DCL-02-065,_Special_Report_02-01:_Results_of_Steam_Generator_Tube_Eddy_Current_Inspections_During_Tenth_Refueling_Outage&oldid=2701279"