ML070680087

Vym 99/148, ASME Section XI Subsection IWE Report on Evaluation of 1998 Torus Inspections, 11/29/1999, Appendix B, Appendix C, Appendix D (Part 2)

ML070680087
Person / Time
Site:	Vermont Yankee
Issue date:	11/29/1999
From:	- No Known Affiliation
To:	Office of Nuclear Reactor Regulation
References
Download: ML070680087 (31)

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1 VERMONT YANKEE 1998 IWE TORUS INSPECTION REPORT , ,161~~ APPENDIX B BOTTOM TEST STRIPS BAYS 8 AND 16 PLOTS OF UT THICKNESS READINGS AND EVALUATION OF PLATE THICKNESS VAR I AT1 0 N I ! ':j .. . PLAN VIEW BOTTOM SECTION i w f ! I, t, I t II I1 I I I I1 I1 11 I1 I I' I# I,' I, i: It It I t I I 1 I I -+ co x 998 1 LZ6 1 882 1 6PZ 1 OlZl 1LC 1 ZECC E60 1 PSO 1 s101 9L6 LE6 868 6S8 028 18L ZPL EOL 999 sz9 98s LPS 80s 69P OEP 16E IS* E 16 PLZ SEZ 96 C LS 1 811 6L OP 1 v) v) W 998 1 LZGC 882 1 - 6PZ1 3 OLZl CLll \ ZECl 'J E60 1 PSOC SCOl 9L6 LE6 868 6S8 OZ8 18L ZPL EOL P99 sz9 989 LPS 80s 699 OEP 16E ZSB El* Q 0 I PLZ SEZ 961. LS 1 811 6L OP L 03 Ln. x 0 I BAY 8 OUT-1 OUT-2 OUT-3 IN-1 IN-2 BOTTOM STRIP MAXIMUM 0.61 1 0.640 0.599 0.612 0.615 MINIMUM 0.573 0.574 0.556 0.577 0.546 AVERAGE 0.601 0.615 0.582 0.602 0.602 STANDARD DEV. 0.00785 0.00998 0.00792 0.00662 0.00803 STD DEV % 1.31 1.62 1 .36 1.10 1.34 AVERAGE AVE-1 (STDDEV) 0.593 0.605 0.574 0.595 0.594 AVE-2(STDDEV) 0.585 0.595 0.566 0.589 0.586 INSTRUMENT ACCURACY +/- .004" 1 11 21 31 41 51 61 71 81 91 101 111 121 131 141 151 161 171 181 191 201 21 1 221 23 1 241 25' 26' 27' 28' 29 30 31 32 33 I I I I I II I I I1 I I I I I I I I 1'1 I I I I I I I 1' n t 96L s LL P69 6L9 ZS9 169 0 19 68s 89s LPS 92s sos P8P E9P ZPP c ZP OOP 6LE 8SE LEE 9 1s S6Z PLZ ESZ Z6Z 1cz 06 I. 69 1 8P 1 LZ 1 90 1 S8 P9 EP zz c 1 11 21 31 41 51 61 71 81 91 101 111 121 131 141 151 161 171 181 191 201 21 1 221 231 24 1 251 26 1 27 1 281 291 301 31 1 I I I 11 I I I I I1 'I I I I I I 1 I1 I I I I I I 1 I I I' 'I

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__ 1998 IWE Torus Inspection Report Location UT Measured Identifier Thickness (inch) Note 1 BAY 1 -A01 BAY 1 -A02 BAY 1 -A03 BAY 1 -A04 BAY 1 -A05 BAY 1 -A06 BAY 1 -A07 BAY 1 -A08 BAY 1 -A09 BAY1 -A1 0 BAY 1 -AI 1 BAY 1 -AI 2 BAY 1 -A1 3 BAY 1 -A1 4 BAY 1 -AI 5 BAY 1 -AI 6 BAY2-A01 BAY 2-A02 BAY2-AO3 BAY2-AO4 BAY 2-A05 BAY 2-A06 BAY2-AO7 BAY2-AO8 BAY2-AO9 BAY2-A10 BAY2-AlI BAY2-A12 BAY2-AI3 BAY2-AI 4 BAY2-Al5 BAY2-Al6 BAY2-AI 7 BAY2 AI 8 0.601 0.61 5 0.61 4 0.593 0.595 0.604 0.607 0.602 0.591 0.594 0.595 0.597 0.597 0.598 0.590 0.594 0.577 0.622 0.623 0.595 0.583 0.625 0.627 0.594 0.61 0 0.61 1 0.596 0.599 0.614 0.613 0.594 0.597 0.575 0.577 Appendix C: Evaluation of Permenant Grid Locations -Y Acceptance Criteria (inch) Note 2 0.570 0.570 0.570 0.570 0.574 0.574 0.574 0.574 0.574 0.574 0.574 0.574 0.570 0.570 0.570 0.570 0.570 0.570 0.570 0.570 0.574 0.574 0.574 0.574 0.574 0.574 0.574 0.574 0.570 0.570 0.570 0.570 0.566 0.559 Margin (inch) Note 3 0.031 0.045 0.044 0.023 0.021 0.030 0.033 0.028 0.01 7 0.020 0.021 0.023 0.027 0.028 0.020 0.024 0.007 0.052 0.053 0.025 0.009 0.051 0.053 0.020 0.036 0.037 0.022 0.025 0.044 0.043 0.024 0.027 0.009 0.018 -2. QA z Ave. Thickness Circumferential Note 5 d Margin (percent)

Note 4 Stress (inch) 5.44 7.89 7.72 4.04 3.66 5.23 5.75 4.88 2.96 3.48 3.66 4.01 4.74 4.91 3.51 4.21 1.23 9.12 9.30 4.39 1.57 8.89 9.23 3.48 6.27 6.45 3.83 4.36 7.72 7.54 4.21 4.74 1.59 3.22 0.606 0.602 0.594 0.595 0.604 0.607 0.604 0.605 Page 1 of 9 1998 IWE Torus Inspection Report Appendix C: Evaluation of Permenant Grid Locations Location UT Measured Acceptance Margin Margin Ave. Thickness Identifier Thickness Criteria (inch) (percent)

Circumferential (inch) (inch) Note 3 Note 4 Stress (inch) Note 1 Note 2 Note 5 BAY3-A01 BAY3-A02 BAY3-A03 BAY3-A04 BAY3-A05 BAY3-AO6 BAY3-A07 BAY3-A08 BAY3-AO9 BAY3-A10 BAY3-All BAY3-Al2 BAY3-Al3 BAY3-A14 BAY3-AI 5 BAY3-AI6 BAY 4-A0 1 BAY4-A02 BAY4-AO3 BAY4-AO4 BAY4-AO5 BAY 4-A06 BAY4-AO7 BAY4-AO8 BAY4-AO9 BAY4-A10 BAY4-All BAY4-Al2 BAY4-Al3 BAY4-AI 4 BAY4-A15 BAY4-Al6 BAY4-Al7 BAY4-Al8 0.594 0.61 6 0.613 0.604 0.600 0.625 0.621 0.608 0.612 0.61 8 0.600 0.604 0.608 0.614 0.600 0.599 0.601 0.631 0.634 0.603 0.607 0.630 0.636 0.601 0.606 0.609 0.574 0.573' 0.610 0.613 0.576 0.576 0.576 0.581 0.570 0.570 0.570 0.570 0.574 0.574 0.574 0.574 0.574 0.574 0.574 0.574 0.570 0.570 0.570 0.570 0.570 0.570 0.570 0.570 0.574 0.574 0.574 0,574 0.574 0.574 0.574 0.574 0.570 0.570 0.570 0.570 0.566 0.559 0.024 0.046 0.043 0.034 0.026 0.051 0.047 0.034 0.038 0.044 0.026 0.030 0.038 0.044 0.030 0.029 0.031 0.061 0.064 0.033 0.033 0.056 0.062 0.027 0.032 0.035 0,000 -0.001 0.040 0.043 0.006 0.006 0.01 0 0.022 4.21 8.07 7.54 5.96 4.53 8.89 8.19 5.92 6.62 7.67 4.53 5.23 6.67 7.72 5.26 5.09 5.44 10.70 11.23 5.79 5.75 9.76 10.80 4.70 5.57 6.10 0.00 -0.17 7.02 7.54 1.05 1.05 1.77 3.94 0.607 0.614 0.609 0.605 0.617 0.619 0.591 0.594 Page 2 of 9 1998 IWE Torus Inspection Report Appendix C: Evaluation of Permenant Grid Locations Location UT Measured Acceptance Margin Margin Ave. Thickness Identifier Thickness Criteria (inch) (percent)

Circumferential (inch) (inch) Note 3 Note 4 Stress (inch) Note 1 Note 2 Note 5 BAY5-A01 BAY5-A02 BAY5-AO3 BAY 5-A04 BAY 5-A05 BAY5-A06 BAY 5-A07 BAY 5-AO8 BAY5-AO9 BAY5-A10 BAYS-A1 1 BAY 5-Al2 BAY5-A13 BAY5-Al4 BAY 5-Al5 BAY5-A16 BAY 6-A01 BAY6-AO2 BAY 6-A03 BAY 6-A04 BAY6-AO5 BAY6-AO6 BAY 6-A07 BAY6-AO8 BAY 6-A09 BAY6-A10 BAY 6-A11 BAY 6-A12 BAY6-Al3 BAY6-Al4 BAY 6-A15 BAY6-A 1 6 0.594 0.629 0.634 0.592 0.592 0.631 0.632 0.588 0.596 0.597 0.599 0.597 0.595 0.597 0.596 0.596 0.588 0.612 0.61 1 0.594 0.584 0.61 7 0.617 0.594 0.607 0.604 0.61 1 0.608 0.601 0.600 0.617 0.613 0.570 0.570 0.570 0.570 0.574 0.574 0.574 0.574 0.574 0.574 0.574 0.574 0.570 0.570 0.570 0.570 0.570 0.570 0.570 0.570 0.574 0.574 0.574 0.574 0.574 0.574 0.574 0.574 0.570 0.570 0.570 0.570 0.024 0.059 0.064 0.022 0.01 8 0.057 0.058 0.01 4 0.022 0.023 0.025 0.023 0.025 0.027 0.026 0.026 0.01 8 0,042 0.041 0.024 0.01 0 0,043 0.043 0.020 0.033 0.030 0.037 0.034 0.031 0.030 0.047 0.043 4.21 10.35 11.23 3.86 0.61 2 3.14 9.93 10.10 2.44 0.61 1 3.83 4.01 4.36 4.01 4.39 4.74 4.56 4.56 3.16 7.37 7.1 9 4.21 1.74 7.49 7.49 3.48 5.75 5.23 6.45 5.92 5.44 5.26 8.25 7.54 0.597 0.596 0.601 0.603 0.608 0.608 Page 3 of 9 Location Identifier BAY 7-A01 BAY7-A02 BAY7-A03 BAY7-AO4 BAY7-A05 BAY7-AO6 BAY7-AO7 BAY7-AO8 BAY7-AO9 BAY7-AI 0 BAY7-A11 BAY7-Al2 BAY 7-A1 3 BAY7-Al4 BAY7-AI 5 BAY7-Al6 BAY 7-A1 7 BAY7-Al8 BAYB-A01 BAY 8-A02 BAY8-AO3 BAY 8-A04 BAY8-A05 BAY8-A06 BAY 8-A07 BAY8-A08 BAY8-AO9 BAY8-A1 0 BAY8-Al1 BAY8-Al2 BAY8-A13 BAY8-Al4 BAY8-Al5 BAY8-A16 UT Measured Thickness (inch) Note 1 0,578 0.622 0.627 0.596 0.577 0.61 9 0.624 0.599 0.600 0.600 0.592 0.591 0.592 0.596 0.597 0.581 0.581 0.598 0.583 0.61 5 0.614 0.606 0.586 0.609 0.613 0.607 0.608 0.607 0.605 0.598 0.608 0.607 0.601 0.603 1998 IWE Torus Inspection Report Appendix C: Evaluation of Permenant Grid Locations Acceptance Criteria (inch) Note2 . 0.570 0.570 0.570 0.570 0.574 0.574 0.574 0.574 0.574 0.574 0.574 0.574 0.570 0.570 0.570 0.570 0.566 0.559 0.570 0.570 0.570 0.570 0.574 0.574 0.574 0.574 0.574 0.574 0.574 0.574 0.570 0.570 0.570 0.570 Margin (inch) Note 3 0.008 0.052 0.057 0.026 0.003 0.045 0.050 0.025 0.026 0.026 0.01 8 0.01 7 0.028 0.022 0.026 0.027 0.015 0.022 0.013 0.045 0.044 0.036 0.012 0.035 0.039 0.033 0.034 0.033 0.031 0.024 0.038 0.037 0.031 0.033 Margin (percent) Note 4 1.40 9.12 10.00 4.56 0.52 7.84 4.36 4.53 4.53 3.14 2.96 4.91 3.86 4.56 4.74 2.65 3.94 8.71 2.28 7.89 7.72 6.32 2.09 6.10 6.79 5.75 5.92 5.75 5.40 4.18 6.67 6.49 5.44 5.79 Ave. Thickness Circumferential Stress (inch) Note 5 0.606 0.605 0.596 0.596 0.605 0.604 0.605 0.605 Page 4 of 9 1998 IWE Torus Inspection Report Appendix C: Evaluation of Permenant Grid Locations Location Identifier BAY 9-A0 1 BAY9-AO2 BAY9-A03 BAY9-AO4 BAY9-AO5 BAY9-A06 BAY9-A07 BAY9-AO8 BAY9-A09 BAY 9-A10 BAYS-A1 1 BAY9-AI2 BAY9-Al3 BAYS-A14 BAYS-A1 5 BAYS-A1 6 e* ! BAY 1 0-A01 BAY 1 O-A02 BAY 10-A03 BAY 1 0-A04 BAY 10-A05 BAY 10-A06 BAY 10-A07 BAY 1 0-A08 BAY 1 0-A09 BAY 1 0-A1 0 BAY 1 O-A1 1 BAY1 O-A12 BAY 1 O-AI 3 BAY 1 O-A14 BAY1 O-A15 BAY 1 O-A16 BAY 1 O-A17 BAY 1 O-A18 UT Measured Acceptance Thickness Criteria (inch) (inch) Note 1 Note 2 0.594 0.61 0 0.609 0.599 0.590 0.606 0.601 0.596 0.599 0.600 0.582 0.593 0.601 0.601 0.593 0.591 0.585 0.629 0.631 0.584 0.586 0.628 0.629 0.583 0.598 0.597 0.598 0.596 0.593 0.592 0.594 0.595 0.588 0.589 0.570 0.570 0.570 0.570 0.574 0.574 0.574 0.574 0.574 0.574 0.574 0.574 0.570 0.570 0.570 0.570 0.570 0.570 0.570 0.570 0.574 0.574 0.574 0.574 0.574 0.574 0.574 0.574 0.570 0.570 0.570 0.570 0.566 0.559 Margin (inch) Note 3 0.024 0.040 0.039 0.029 0.01 6 0.032 0.027 0.022 0.025 0.026 0.008 0.01 9 0.031 0.031 0.023 0.021 0.01 5 0.059 0.061 0.01 4 0.012 0.054 0.055 0.009 0.024 0.023 0,024 0.022 0.023 0.022 0.024 0.025 0.022 0.030 Margin Ave. Thickness (percent)

Circumferential Note 4 Stress (inch) Note 5 0.603 4.21 7.02 6.84 5.09 2.79 5.57 4.70 3.83 0.598 4.36 4.53 1.39 5.44 5.44 4.04 3.68 0.597 3.31 , 0,594 2.63 10.35 10.70 2.46 2.09 9.41 9.58 1.57 4.1 8 4.01 4.1 8 3.83 4.04 3.86 4.21 4.39 3.89 5.37 0.607 0.607 0.597 0.594 Page 5 of 9 1998 IWE Torus Inspection Report Appendix C: Evaluation of Permenant Grid Locations Location Identifier BAY 11 -A01 BAY 1 1 -A02 BAY 1 1 -A03 BAY1 1 -A04 BAY 1 I -A05 BAY 1 1 -A06 BAY 1 1 -A07 BAY 1 1 -A08 BAY 1 1 -A09 BAY 1 1 -A1 0 BAY 1 1 -A1 1 BAY 1 1 -A1 2 BAY 1 1 -A1 3 BAY 1 1 -A1 4 BAY 1 1 -A1 5 BAY 1 1 -A1 6 BAY 12-A01 BAY 12-A02 BAY 12-A03 BAY 12-A04 BAY 12-A05 BAY 12-A06 BAY 12-A07 BAY 12-A08 BAY 12-A09 BAY1 2-A10 BAYl2-A11 BAY 12-A12 BAY 12-A13 BAY 12-A14 BAY 12-A15 BAY 12-A16 UT Measured Thickness (inch) Note 1 0.586 0.61 8 0.61 7 0.594 0.588 0.621 0.61 8 0.592 0.585 0.586 0.602 0.601 0.587 0.589 0.598 0.598 0.609 0.642 0.640 0.593 0.61 0 0.636 0.633 0.588 0.594 0.596 0.61 8 0.61 0 0.595 0.596 0.612 0.607 Acceptance Criteria (inch) Note 2 0.570 0.570 0.570 0.570 0.574 0.574 0.574 0.574 0.574 0.574 0.574 0.574 0.570 0.570 0.570 0.570 0.570 0.570 0.570 0.570 0.574 0.574 0.574 0.574 0.574 0.574 0.574 0.574 0.570 0.570 0.570 0.570 Margin (inch) Note 3 0.016 0.048 0.047 0.024 0.014 0.047 0.044 0.01 8 0.01 1 0.012 0.028 0.027 0.017 0.01 9 0.028 0.028 0.039 . 0.072 0.070 0.023 0,036 0.062 0.059 0.01 4 0.020 0.022 0.044 0.036 0.025 0.026 0.042 0.037 Margin (percent)

Note 4 2.81 8.42 8.25 4.21 2.44 8.19 7.67 3.14 1.92 2.09 4.70 2.98 3.33 4.91 4.91 4.88 6.84 12.63 12.28 4.04 6.27 10.80 10.28 2.44 3.48 3.83 7.67 6.27 4.39 4.56 7.37 6.49 Ave. Thickness Circumferential Stress (inch)

Note 5 0.604 0.605 0.594 0.593 0.621 0.61 7 0.605 0.603 Page 6 of 9 Location UT Measured Identifier Thickness (inch) Note 1 BAY 13-A01 BAY 13-A02 BAY 13-A03 BAY 13-AO4 BAY 13-A05 BAY 13-A06 BAY 13-A07 BAY1 3-A08 BAY 13-A09 BAY1 3-A10 BAY 1 3-A11 BAY 1 &A12 BAY 13-Al3 BAY 13-A14 BAY1 3-A15 BAY 13-A16 BAY 14-A01 BAY 14-A02 BAY 14-A03 BAY 1 4-A04 BAY 14-A05 BAY 14-A06 BAY 1 4-A07 BAY 14-A08 BAY 14-A09 BAY 14-A10 BAY14-A11 BAY 14-A12 BAY 14-A13 BAY14-AI4 BAY 1 4-A15 BAY 14-A16 BAY 14-A17 BAY 14-Al8 0.595 0.632 0.633 0.601 0.597 0.639 0.641 0.603 0.599 0.595 0.585 0.585 0.599 0.596 0.586 0.585 0.591 0.626 0.625 0.590 0.573 0.613 0.614 0.596 0.597 0.598 0.590 0.595 0.594 0.594 0.590 0.594 0.592 0.593 1998 IWE Torus inspection Report Appendix C: Evaluation of Permenant Grid Locations Acceptance Margin Criteria (inch) (inch) Note 3 Note 2 0.570 0.570 0.570 0.570 0.574 0.574 0.574 0.574 0.574 0.574 0.574 0.574 0.570 0.570 0.570 0.570 0.570 0.570 0.570 0.570 0.574 0.574 0.574 0.574 0.574 0.574 0.574 0.574 0.570 0.570 0.570 0.570 0.566 0.559 0.025 0.062 0.063 0.031 0.023 0.065 0.067 0.029 0.025 0.021 0.01 1 0.01 1 0.029 0.026 0.01 6 0.01 5 0.021 0.056 0.055 0.020 -0.001 0.039 0.040 0.022 0.023 0.024 0.01 6 0.021 0.024 0.024 0.020 0.024 0.026 0.034 Margin Ave. Thickness (percent)

Circumferential Note 4 Stress (inch) Note 5 4.39 10.88 11.05 5.44 4.01 11.32 11.67 5.05 4.36 3.66 1.92 1.92 5.09 4.56 2.81 2.63 3.68 9.82 9.65 3.51 -0.17 6.79 6.97 3.83 4.01 4.18 2.79 3.66 4.21 4.21 3.51 4.21 4.59 6.08 0.61 5 0.620 0.591 0.592 0.608 0.599 0.595 0.593 \ Page 7 of 9 Location Identifier BAY 1 5-AO1 BAY1 5-A02 BAY 1 5-A03 BAY1 5-A04 BAY 1 5-A05 BAY 1 5-A06 BAY1 5-A07 BAY1 5-A08 BAY 1 5-A09 BAY 1 5-A10 BAY 1 5-Al1 BAY 1 5-Al2 BAY 15-Al3 BAY 15-A14 BAY 15-A15 BAY 1 5-A16 BAY 15-Al7 BAY 1 5-Al8 BAY1 6-A01 BAY 1 6-A02 BAY 1 6-A03 BAY1 6-A04 BAY 1 6-A05 BAY1 6-A06 BAY 1 6-A07 BAY 1 6-A08 BAY 1 6-A09 BAY 1 6-A10 BAY 1 6-Al1 BAY 1 6-A12 BAY 16-A13 BAY 16-A14 BAY 16-A15 BAY 16-A16 Maximum Minimum 0.585 0.604 0.605 0.597 0.589 0,609 0.610 0.599 0.582 0.582 0.607 0.606 0.584 0.580 0.605 0.604 0.587 0.581 0.587 0.61 3 0.61 5 0.601 0.587 0.61 6 0.61 9 0.61 1 0.601 0.607 0.613 0.61 0 0.597 0.602 0.61 1 0.585 0.642 0.573 1998 IWE Torus Inspection Report Appendix C: Evaluation of Permenant Grid Locations UT Measured Acceptance Thickness Criteria (inch) (inch) Note 1 Note 2 0.570 0.570 0.570 0.570 0.574 0.574 0.574 0.574 0.574 0.574 0.574 0.574 0.570 0.570 0.570 0.570 0.566 0.559 0,570 0.570 0.570 0.570 0.574 0.574 0.574 0.574 0.574 0.574 0.574 0.574 0.570 0.570 0.570 0.570 Margin (inch) Note 3 0.01 5 0.034 0.035 0.027 0.01 5 0.035 0.036 0.025 0.008 0.008 0.033 0.032 0.014 0.01 0 0.035 0.034 0.021 0.022 0.01 7 0.043 0.045 0.031 0.013 0.042 0.045 0.037 0.027 0.033 0.039 0.036 0.027 0.032 0.041 0.01 5 0.072 -0.001 Margin Ave. Thickness (percent)

Circumferential Note 4 Stress (inch)

Note 5 2.63 5.96 6.14 4.74 2.61 6.1 0 6.27 4.36 1.39 1.39 5.75 5.57 2.46 1.75 6.14 5.96 3.71 3.94 0.598 0.602 0.594 0.593 2.98 7.54 7.89 5.44 2.26 7.32 7.84 6.45 0.608 4.70 5.75 6.79 6.27 4.74 5.61 7.19 2.63 0.604 0.608 0.599 12.632 -0.1 74 0.621 0.591 Page 8 of 9 1998 !WE Torus Inspection Report Appendix C: Evaluation of Permenant Grid Locations Location UT Measured Acceptance Margin Margin Ave. Thickness Identifier Thickness Criteria (inch) (percent)

Circumferential (inch) (inch) Note 3 Note 4 Stress (inch)

Note 1 Note 2 Note 5 NOTES 1 After sandblasting thickness measurement.

2 3 4 5 General area corrosion acceptance criteria from VYC-1032, Revision 1. = UT measurement - Acceptance Criteria

= % Over Acceptance Criteria

= ave. for Circ. Stress (measurments along horizontal line). Page 9 of 9 Appendix TAB No. A 10 11 12 I V.Y. 1998 ASME SECTION XI SUBSECTION IWE REPORT ON EVALUATION OF TORUS INSPECTIONS APPENDIX D: EVALUATION OF UT DATA FOR GROUP 3 LOCAL AREA INSPECTIONS IS1 Report No. YA-UT-112-125 YA-UT-112-126 YA-UT-112-127 YA-UT-112-129 (3/31/98)

~ -~ Location Bay 4: Bottom Plate Thickness Under Baffle Plates. Bay 15: Torus Bottom Plate Thickness Under Baffle Plates. Bay 7: Local indications at temporary opening. Bay 1 - Area 1 : As-found Local Area UT Examination Description 8 discrete locations:

Row 4A (Figure 2.5) 8 discrete locations at Row 15A(Figure 2.5) 8 discrete locations at Row 15B(Figure 2.5) 8 discrete locations adjacent to round indication 27" from bottom of opening. 11 discrete locations adjacent to gouge at top of opening. 3x8" strip of moderate corrosion located 6 from bottom seam weld and lo" from bay 1611 ring girder. inspection Data Statistics. (Thickness, Inches) Max. = 0.644" Min. = 0.602" Ave. = 0.623" Max. = 0.599 Min. = 0.586 Ave. = 0.592" Max. = 0.61 0" Min. = 0.596" Ave. = 0.61 3" Max. = 0.595" Min. = 0.592" Ave. = 0.594" Max. = 0.594" Min. = 0.589" Ave. = 0.591" Ma. = 0.61 5" Min. = 0.606 Ave. =0.610 Screening Results / Comments All readings above bottom centerline min. wall = 0.584" No engineering evaluation required.

All readings above bottom centerline min. wall = 0.584" No engineering evaluation required.

Confirmatory readings performed during Torus coating efforts, indications were weld repaired as required, see WPC W-NCR17. All readings above bottom centerline min. wall = 0.584". No engineering evaluation required.

All readings above bottom centerline min. wall = 0.584" No engineering evaluation required.

Page 1 of 4 v V.Y. 1998 ASME SECTION XI SUBSECTION IWE REPORT ON EVALUATION OF TORUS INSPECTIONS APPENDIX D: EVALUATION OF UT DATA FOR GROUP 3 LOCAL AREA INSPECTIONS Appendix TAB No. 13 A ~~ 14 15 16 IS1 Report No. YA-UT-112-27 YA-UT-112-131 YA-UT-112-133 YA-UT-112-26 YA-UT-112-46 YA-UT-112-25 YA-UT-112-46 Location Bay2-Areal:

As-found Local Area UT Examination Bay 2 - Area 2: As-found Local Area UT Examination Bay 5 -Area 1: As-found Local Area UT Examination.

Bay 5 -Area 1: Confirmatory Readings Bay 5 - Area 2: As-found Local Area UT Examination Bay 5 - Area 2: Confirmatory Readings Description Single pit ( was identified previously from under water visual coating inspection 9/96). 6"x6 grid located 11'-6" toward Torus ID and 18" from mid bay seam weld.

4"x5 area of moderate corrosion and pitting previously marked as 93-07, located 20'-10" from bottom seam weld and 9 from bay 2/3 ring girder. (6"x6" square area, expanded to 12"x12" area) Post-Sandblast.

9"xI 2" area of numerous small pits and minor corrosion located 43" from bay 516 ring girder and 56 from bottom seam weld. (1 3x1 5" area 1" grids ) Areas of minor oxidation

& degraded coating 26 from bay 4/5 ring girder and 145" from bottom seam weld. (26"x26 area 1" grids) Inspection Data Statistics. (Thickness, Inches)

Max. = 0.609" Min. = 0.591" Ave. =0.606" Ma. = 0.574" Min. = 0.567" Ave. = 0.571 Max. = 0.602 Min. = 0.585" Ave. = 0.596 Max. = 0.599 Min. = 0.586 Ave. = 0.596 Screening Results / Comments All readings above bottom centerline min. wall = 0.584" No engineering evaluation required. All readings above code minimum wall thickness at this location.

See Table 3.1 Permanent grid measurements on the same average 0.578 No engineering evaluation required.

Note: identified as Bay 5 - Area 2 on As-found Visual Examination (Appendix A ,Tab 1) All readings above bottom centerline min. wall

= 0.584". No engineering evaluation required.

Identified as Bay 5 - Area 3 on As-found Visual Examination (Appendix A ,Tab 1) All readings above bottom centerline min. wall = 0.584". No engineering evaluation required. - Page 2 of 4 Appendix TAB No. 17 A IS1 Report No. YA-UT-112-67 YA-UT-112-68 YA-UT-112-48 YA-UT-112-24 YA-UT-112-46 YA-UT-112-47 (4/1/99) 18 19 20 Location Bay 5 - Area 1 (Inside) As-found Local Area UT Examination Bay 12 -Area 1: As-found Local Area UT Examination.

Bay 12 - Area 2: As-found Local Area UT Examination.

Bay 12 - Area 2: Confirmatory Readings (26DL+) Bay 12 - Area 2: Confirmatory Readings (A-Scan)

Bay 15-Area 1: As-found Local Area UT Examination

..- V.Y. 1998 ASME SECTION XI SUBSECTION IWE REPORT ON EVALUATION OF TORUS INSPECTIONS APPENDIX D: EVALUATION OF UT DATA FOR GROUP 3 LOCAL AREA INSPECTIONS Description 60x1 2" strip of moderate corrosion located 56 from bay 516 ring girder along seam weld. (2" grids) 6x6strip of moderate corrosion 21" from bay 1 1/12 ring girder, and 88 from bottom seam weld.

24x1 2 area of minor corrosion located 6ft. from bay 11/12 ring girder and approx. 90 from bottom seam weld. (1 " grids) 8x8 area of moderate corrosion. Located 14" from bay 15/14 ring girder approx. 19'-6 from bottom seam weld. (area was previously marked 93-1 6) Inspection Data Statistics. (Thickness, Inches)

Max. = 0.644" Min. = 0.583" Ave. = 0.613" Max. = 0.595" Min. = 0.590" Ave. = 0.592" Max. = 0.61 9 Min. = 0.570 Ave. = 0.595" Ma. = 0.603 Min. = 0.597" Ave. = 0.600" Screening Results

/ Comments Identified as Bay 1 - Area 1 on As-found Visual Examination (Appendix A ,Tab 1)1 UT readings from interior surface. 4 of 180 UT readings at 0.583" are below code min. wall of 0.584" Lowest measured thickness is 99.8% of code min wall. All readings above bottom acceptance criteria of 0.574". See Table 3.1. No engineering evaluation required.

All readings above bottom centerline min. wall = 0.584" No engineering evaluation required.

~ Minimum value of 0.570" is greater than acceptance criteria from Table 3.1 for distance of 7 feet from bottom center of Torus. = 569". Locations of thinnest readings are oriented in the circumferential direction

& may be due to rolling of plates. No engineering evaluation required. All readings above bottom centerline min. wall = 0.584" No engineering evaluation required.

Page 3 of 4 b -r - V.Y. 1998 ASME SECTION XI SUBSECTION IWE REPORT ON EVALUATION OF TORUS INSPECTIONS APPENDIX D: EVALUATION OF UT DATA FOR GROUP 3 LOCAL AREA INSPECTIONS Inspection Data Statistics. (Thickness, Inches)

Max. = 0.603 Min. = 0.543" Ave. = 0.597" Appendix TAB No. 21 A Screening Results I Comments Minimum value of 0.543 is greater than acceptance criteria from Table 3.1 for distance of 19.0 feet from bottom center of Torus ( =.534"). Single low reading is characterized as less than diameter of transducer

(.312). Adjacent measurements are approx.

0.600 No engineering evaluation required.

(411 /99) Description Bay 15 - Area 2: As-found Local Area UT Examination 6x6 area of moderate corrosion.

Located 6 from bay 15/14 ring girder approx. 19'-10" from bottom seam weld. (area was previously marked 93-1 6) Page 4 of 4