L-16-288, Submittal of Technical Specification 5.6.6 Steam Generator Tube Inspection 180-Day Report
| ML16306A262 | |
| Person / Time | |
|---|---|
| Site: | Davis Besse  |
| Issue date: | 10/31/2016 |
| From: | Boles B FirstEnergy Nuclear Operating Co |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| L-16-288 | |
| Download: ML16306A262 (29) | |
Text
FENOC' 5501 North State Route 2 FirstEnergy Nuclear Operating Company Oak Harbor. Ohio 43449 Brian D. Boles 419-321-7676 Vice President, Fax: 419-321-7582 Nuclear October 31 , 2016 L-16-288 ATTN: Document Control Desk U.S. Nuclear Regulatory Commission Washington, DC 20555-0001
SUBJECT:
Davis-Besse Nuclear Power Station, Unit No. 1 Docket No. 50-346, License No. NPF-3 Technical Specification 5.6.6 Steam Generator Tube Inspection 180-Day Report The FirstEnergy Nuclear Operating Company (FENOC), in accordance with the Davis-Besse Nuclear Power Station, Unit 1 (DBNPS) Technical Specification 5.6.6, "Steam Generator Tube Inspection Report," hereby submits a report of the steam generator tube inspections performed pursuant to Technical Specification 5.5.8, "Steam Generator (SG) Program." The attached report summarizes the steam generator tube inspections performed during the DBNPS spring 2016 outage.
Also included is response to FENOC letter dated August 31, 2009 (ML092450685) for a commitment to provide the structural limit associated with the most limiting large break loss of coolant accident for the replacement steam generators.
There are no regulatory commitments contained in this letter. If there are any questions or if additional information is required, please contact Mr. Thomas A. Lentz, Manager-Fleet Licensing (330) 315-6810.
Sincerely, Brian D. Boles
Attachment:
Davis-Besse Nuclear Power Station Steam Generator Tube Inspection Report CC: NRC Region Ill Administrator NRC Resident Inspector NRC Project Manager Utility Radiological Safety Board
Attachment 1 L-16-288 Davis-Besse Nuclear Power Station Steam Generator Tube Inspection Report Page 1 of 28 Following completion of a steam generator inspection performed in accordance with the Davis-Besse Nuclear Power Station, Unit 1 (DBNPS) Technical Specification (TS) 5.5.8, Steam Generator (SG) Program, TS 5.6.6, Steam Generator Tube Inspection Report, requires a report of the inspection to be submitted to the Nuclear Regulatory Commission within 180 days after the initial entry into MODE 4. This report summarizes the steam generator tube inspection performed during the DBNPS spring 2016 Nineteenth Refueling Outage (1R19).
The organization of the report is as follows:
Section 1 Scope of Inspections Performed on Each SG (TS 5.6.6.a);
Section 2 Degradation Mechanisms Found (TS 5.6.6.b);
Section 3 Nondestructive Examination Techniques Utilized for Each Degradation Mechanism (TS 5.6.6.c);
Section 4 Location, Orientation (if Linear), and Measured Sizes (if Available) of Service Induced Indications (TS 5.6.6.d);
Section 5 Number of Tubes Plugged During the Inspection Outage for Each Degradation Mechanism (TS 5.6.6.e);
Section 6 The Number and Percentage of Tubes Plugged to Date, and the Effective Plugging Percentage in Each SG (TS 5.6.6.f);
Section 7 The Results of Condition Monitoring, Including the Results of Tube Pulls and In-Situ Testing (TS 5.6.6.g);
Also included is response to FENOC letter dated August 31, 2009 (ML092450685) for a commitment to provide the structural limit associated with the most limiting large break loss of coolant accident for the replacement steam generators.
Section 8 Replacement SG Tubing Structural Limit Associated with the Most Limiting LBLOCA for the Replacement SG L-16-288 Page 2 of 28 The following is a listing of the more common acronyms and abbreviations that are used throughout this report.
%TW Percent Through-Wall EPRI Electric Power Research Institute INCH Location of indication, in inches, relative to TSP reference LBLOCA Large Break Loss of Coolant Accident PDA Percent Degraded Area Rev. Revision SG Steam Generator TS Technical Specifications TSP Tube Support Plate xxS Tube Support Plate Number L-16-288 Page 3 of 28 Section 1 Scope of Inspections Performed on each SG (TS 5.6.6.a)
EXAM SCOPE SG 2A SG 1B Eddy Current Full length, bobbin probe [inservice tubes] 15606 15607 Special interest, array probe [inspections] 145 53 Special interest, rotating-coil probe [inspection(s)] 1 7 Visual Previously installed tube plugs 2 0 Channel head, general 2 2 L-16-288 Page 4 of 28 Section 2 Degradation Mechanisms Found (TS 5.6.6.b)
Degradation Mechanism SG 2A SG 1B Wear, broached TSP [indications] 627 67 Wear, drilled TSP [indication(s)] 1 3 L-16-288 Page 5 of 28 Section 3 Nondestructive Examination Techniques Utilized for Each Degradation Mechanism (TS 5.6.6.c)
The eddy current examinations were performed utilizing various eddy current probes. All examination techniques utilized were qualified for detection of the relevant degradation mechanisms. This qualification is in accordance with the EPRI SG Examination Guidelines, Revision 7. The applicable Examination Technique Specification Sheets (ETSS) are listed for reference only. Site-specific examination technique sheets are developed prior to each steam generator inspection in accordance with Appendix H or I (as applicable) of the EPRI SG Examination Guidelines, Revision 7.
Degradation Applicability Probe Type Industry Mechanism Qualification Wear TSP Bobbin 96004.1 Rev.
13 Wear Drilled TSP Bobbin I-96042.1 Rev.
4 Wear Broached TSP Bobbin I-96043.1 Rev.
single contact, multiple contact, and 2 tapered Wear Broached TSP Array 11956.3 Rev. 2 11956.4 Rev. 2 Wear Broached and Drilled TSP Rotating- 96910.1 Rev.
coil 10 L-16-288 Page 6 of 28 Section 4 Location, Orientation (if Linear), and Measured Sizes (if Available) of Service Induced Indications (TS 5.6.6.d)
Wear at broached TSPs SG Row Tube TSP INCH %TW 2A 86 1 16S -0.41 39 2A 117 110 16S -0.34 35 2A 10 1 16S -0.33 34 2A 4 1 16S -0.3 32 2A 8 1 16S -0.32 31 2A 89 1 16S -0.33 31 2A 118 109 16S -0.4 30 2A 148 2 14S -0.67 29 2A 1 16 16S -0.39 28 2A 3 1 16S -0.82 28 2A 76 131 16S -0.71 27 2A 87 127 16S -0.35 27 2A 101 124 16S -0.39 27 2A 7 1 16S -0.33 26 2A 66 1 16S -0.29 26 2A 137 1 16S -0.44 26 2A 149 1 14S -0.78 26 2A 68 131 16S -0.84 25 2A 76 130 16S -0.38 25 2A 142 1 16S -0.35 25 2A 71 130 16S -0.32 24 2A 79 1 16S 0.18 24 2A 92 129 16S -0.41 24 2A 95 128 16S -0.35 24 2A 99 126 16S -0.39 24 2A 119 108 16S -0.42 24 2A 120 107 16S -0.37 24 2A 124 101 16S -0.35 24 2A 5 1 16S -0.32 23 2A 27 74 15S -0.7 23 2A 73 1 16S -0.31 23 2A 84 129 16S -0.36 23 2A 91 129 16S -0.35 23 2A 95 127 16S -0.4 23 2A 2 16 16S 0.22 22 L-16-288 Page 7 of 28 Wear at broached TSPs (Continued)
SG Row Tube TSP INCH %TW 2A 6 1 16S -0.63 22 2A 11 1 16S -0.37 22 2A 12 1 16S -0.35 22 2A 13 1 16S -0.35 22 2A 16 1 16S -0.39 22 2A 48 20 15S -0.84 22 2A 69 130 16S -0.36 22 2A 70 131 16S -0.37 22 2A 72 129 16S -0.4 22 2A 72 131 16S -0.34 22 2A 73 3 15S -0.82 22 2A 78 129 16S -0.35 22 2A 106 121 16S -0.39 22 2A 108 119 16S -0.4 22 2A 125 100 16S -0.39 22 2A 145 2 14S -0.72 22 2A 148 1 14S -0.78 22 2A 150 5 16S -0.33 22 2A 65 11 15S -0.73 21 2A 77 129 16S -0.33 21 2A 2 15 16S 0 20 2A 51 5 15S -0.82 20 2A 53 10 15S -0.84 20 2A 68 131 13S 0.22 20 2A 89 126 16S -0.36 20 2A 92 128 16S -0.69 20 2A 113 41 16S -0.78 20 2A 120 107 13S 0 20 2A 136 59 15S 0.19 20 2A 147 1 14S -0.7 20 2A 150 4 16S -0.37 20 2A 2 27 16S -0.39 19 2A 3 20 16S -0.78 19 2A 31 106 16S -0.43 19 2A 53 1 16S -0.81 19 2A 74 131 16S 0.04 19 2A 76 129 16S -0.77 19 2A 78 131 16S -0.78 19 2A 83 6 14S 0.26 19 2A 83 132 13S -0.71 19 2A 84 1 16S -0.34 19 L-16-288 Page 8 of 28 Wear at broached TSPs (Continued)
SG Row Tube TSP INCH %TW 2A 90 128 16S -0.76 19 2A 97 126 16S -0.75 19 2A 98 124 16S -0.33 19 2A 107 120 16S -0.44 19 2A 111 41 16S -0.77 19 2A 130 1 16S -0.3 19 2A 146 2 16S -0.69 19 2A 146 2 14S -0.76 19 2A 148 3 14S -0.78 19 2A 151 11 16S -0.88 19 2A 151 16 16S -0.74 19 2A 27 74 15S 0.21 18 2A 31 6 15S -0.36 18 2A 43 27 16S -0.72 18 2A 67 8 15S -0.88 18 2A 78 127 16S -0.87 18 2A 83 131 16S -0.81 18 2A 89 127 16S -0.35 18 2A 106 120 16S -0.74 18 2A 142 14 15S 0.2 18 2A 144 1 14S -0.68 18 2A 145 18 15S 0.2 18 2A 148 5 16S -0.71 18 2A 150 13 16S -0.7 18 2A 151 7 16S -0.32 18 2A 2 2 16S 0.1 17 2A 7 16 15S -0.22 17 2A 18 1 16S 0.24 17 2A 22 1 16S 0 17 2A 29 92 15S -0.15 17 2A 44 5 15S -0.82 17 2A 50 5 15S -0.73 17 2A 63 130 16S -0.47 17 2A 82 131 16S -0.81 17 2A 83 1 14S 0.26 17 2A 86 123 16S -0.3 17 2A 86 129 16S -0.81 17 2A 89 129 16S -0.76 17 2A 90 129 16S -0.42 17 2A 94 128 16S -0.88 17 L-16-288 Page 9 of 28 Wear at broached TSPs (Continued)
SG Row Tube TSP INCH %TW 2A 96 127 16S -0.84 17 2A 99 125 16S -0.32 17 2A 100 125 16S -0.41 17 2A 104 121 16S -0.35 17 2A 111 115 16S -0.74 17 2A 113 44 16S -0.8 17 2A 113 114 16S -0.9 17 2A 123 5 14S -0.72 17 2A 133 61 15S -0.86 17 2A 140 70 16S -0.41 17 2A 145 14 15S 0.2 17 2A 146 25 16S -0.66 17 2A 147 8 16S -0.7 17 2A 150 5 14S -0.75 17 2A 150 11 16S -0.74 17 2A 150 12 16S -0.7 17 2A 150 17 16S 0.17 17 2A 15 1 16S -0.71 16 2A 17 23 15S -0.73 16 2A 23 66 15S -0.73 16 2A 32 107 16S -0.24 16 2A 45 120 16S -0.34 16 2A 48 123 16S -0.41 16 2A 49 7 16S -0.8 16 2A 52 10 15S -0.91 16 2A 58 5 15S -0.85 16 2A 62 12 15S -0.73 16 2A 63 129 16S -0.35 16 2A 64 13 15S -0.78 16 2A 66 11 15S 0.18 16 2A 66 131 13S -0.73 16 2A 71 2 16S -0.33 16 2A 72 48 16S -0.63 16 2A 73 1 13S -0.21 16 2A 73 46 16S -0.92 16 2A 73 131 16S -0.67 16 2A 81 1 16S 0.15 16 2A 81 129 16S -0.85 16 2A 82 129 16S -0.83 16 2A 85 128 16S -0.85 16 2A 86 127 16S -0.31 16 2A 87 129 16S -0.73 16 L-16-288 Page 10 of 28 Water at Broached TSPs (Continued)
SG Row Tube TSP INCH %TW 2A 96 125 16S -0.84 16 2A 104 85 15S -0.75 16 2A 112 50 16S -0.64 16 2A 113 83 15S -0.78 16 2A 120 43 16S -0.65 16 2A 134 50 15S 0.19 16 2A 137 77 16S -0.35 16 2A 139 70 16S -0.82 16 2A 142 1 14S -0.65 16 2A 144 12 15S -0.83 16 2A 145 1 14S -0.73 16 2A 145 5 16S -0.8 16 2A 146 1 14S -0.8 16 2A 146 24 15S 0.13 16 2A 147 2 14S -0.71 16 2A 149 2 16S -0.35 16 2A 149 5 16S -0.63 16 2A 2 1 16S -0.73 15 2A 20 11 15S -0.85 15 2A 30 7 15S -0.78 15 2A 38 10 15S -0.86 15 2A 42 5 16S -0.9 15 2A 43 4 15S -0.74 15 2A 45 7 15S -0.8 15 2A 52 6 15S -0.86 15 2A 53 10 16S -0.75 15 2A 54 12 15S -0.77 15 2A 55 126 16S -0.87 15 2A 60 112 15S -0.75 15 2A 60 129 16S -0.33 15 2A 65 4 16S 0.2 15 2A 66 130 11S 0.35 15 2A 74 129 16S -0.83 15 2A 75 2 14S -0.75 15 2A 78 1 14S -0.79 15 2A 80 131 16S -0.85 15 2A 88 129 16S -0.82 15 2A 91 115 16S -0.68 15 2A 91 128 16S -0.74 15 L-16-288 Page 11 of 28 Water at Broached TSPs (Continued)
SG Row Tube TSP INCH %TW 2A 105 122 16S -0.81 15 2A 109 117 16S -0.74 15 2A 113 40 16S -0.91 15 2A 118 46 16S -0.76 15 2A 121 32 13S -0.72 15 2A 121 43 16S -0.65 15 2A 129 1 14S -0.68 15 2A 129 94 16S -0.89 15 2A 130 1 14S -0.78 15 2A 134 1 14S -0.69 15 2A 136 1 14S -0.78 15 2A 138 2 14S -0.69 15 2A 144 1 16S -0.34 15 2A 144 44 16S -0.71 15 2A 147 10 16S -0.65 15 2A 147 16 16S -0.6 15 2A 148 2 16S -0.66 15 2A 149 9 16S -0.77 15 2A 150 1 14S -0.65 15 2A 1 5 14S 0 14 2A 4 1 14S -0.7 14 2A 4 20 16S -0.64 14 2A 20 1 16S -0.98 14 2A 20 76 14S -0.69 14 2A 31 19 15S -0.78 14 2A 41 105 15S -0.31 14 2A 43 118 11S 0.29 14 2A 47 5 15S -0.82 14 2A 53 110 15S -0.72 14 2A 54 1 16S -0.77 14 2A 58 1 16S -0.71 14 2A 69 12 16S -0.76 14 2A 71 1 16S -0.31 14 2A 73 129 16S -0.96 14 2A 82 6 14S 0.26 14 2A 83 132 11S -0.69 14 2A 86 122 16S -0.33 14 2A 87 126 16S -0.73 14 L-16-288 Page 12 of 28 Water at Broached TSPs (Continued)
SG Row Tube TSP INCH %TW 2A 88 2 14S -0.8 14 2A 88 127 16S -0.72 14 2A 89 119 15S -0.82 14 2A 89 130 16S -0.85 14 2A 107 87 15S -0.78 14 2A 107 95 15S 0.22 14 2A 110 54 16S -0.77 14 2A 111 87 15S -0.8 14 2A 112 112 15S 0.11 14 2A 112 116 16S -0.74 14 2A 114 38 16S -0.71 14 2A 115 114 16S -0.38 14 2A 116 37 16S -0.68 14 2A 116 48 16S -0.87 14 2A 125 78 15S -0.66 14 2A 128 95 16S -0.82 14 2A 131 1 14S -0.77 14 2A 132 65 15S -0.85 14 2A 133 1 14S -0.7 14 2A 137 1 14S -0.8 14 2A 137 53 15S -0.84 14 2A 137 76 16S -0.72 14 2A 138 13 16S -0.74 14 2A 138 26 16S -0.77 14 2A 142 19 15S 0.21 14 2A 143 12 16S -0.62 14 2A 144 5 16S -0.72 14 2A 145 38 16S -0.62 14 2A 150 2 14S -0.6 14 2A 151 2 16S -0.69 14 2A 2 11 16S 0 13 2A 8 35 15S 0.19 13 2A 18 1 14S -0.71 13 2A 21 10 15S -0.78 13 2A 21 90 16S -0.34 13 2A 24 95 16S -0.32 13 2A 27 100 16S -0.36 13 2A 36 85 16S -0.77 13 2A 41 24 16S -0.61 13 L-16-288 Page 13 of 28 Water at Broached TSPs (Continued)
SG Row Tube TSP INCH %TW 2A 43 31 16S -0.83 13 2A 46 26 16S -0.85 13 2A 47 95 15S 0.21 13 2A 52 4 15S -0.8 13 2A 52 4 15S 0.22 13 2A 60 12 15S -0.86 13 2A 69 41 16S -0.59 13 2A 70 129 16S -0.82 13 2A 73 41 16S -0.68 13 2A 74 130 16S -0.86 13 2A 75 119 15S -0.28 13 2A 75 131 16S -0.75 13 2A 77 2 14S 0.26 13 2A 77 130 16S -0.72 13 2A 78 1 14S 0.31 13 2A 78 1 13S 0.29 13 2A 79 2 14S -0.78 13 2A 79 130 16S -0.81 13 2A 79 131 16S -0.85 13 2A 80 129 16S -0.84 13 2A 81 112 15S -0.81 13 2A 81 131 16S -0.85 13 2A 83 1 13S 0.26 13 2A 86 125 16S -0.77 13 2A 86 126 16S -0.81 13 2A 86 130 16S -0.76 13 2A 87 120 16S -0.7 13 2A 87 122 16S -0.7 13 2A 87 130 16S -0.82 13 2A 88 130 16S -0.77 13 2A 90 125 16S -0.71 13 2A 91 117 15S 0.24 13 2A 94 127 16S -0.77 13 2A 96 118 16S -0.33 13 2A 96 124 16S -0.31 13 2A 101 123 16S -0.77 13 2A 102 56 16S -0.83 13 2A 102 91 15S -0.78 13 2A 105 60 16S -0.67 13 2A 105 121 16S -0.8 13 2A 108 118 16S -0.33 13 2A 109 40 16S -0.76 13 L-16-288 Page 14 of 28 Water at Broached TSPs (Continued)
SG Row Tube TSP INCH %TW 2A 109 58 16S -0.79 13 2A 110 116 16S -0.84 13 2A 112 114 16S -0.89 13 2A 113 92 15S -0.84 13 2A 117 50 16S -0.75 13 2A 118 45 16S -0.8 13 2A 122 105 16S -0.25 13 2A 126 92 16S 0.16 13 2A 140 38 15S -0.89 13 2A 141 16 16S -0.74 13 2A 142 14 16S -0.72 13 2A 143 13 16S -0.69 13 2A 145 3 14S -0.77 13 2A 147 2 16S -0.67 13 2A 149 3 14S -0.72 13 2A 149 3 16S -0.74 13 2A 149 4 14S -0.75 13 2A 149 15 16S -0.71 13 2A 150 3 16S -0.78 13 2A 150 10 16S -0.71 13 2A 1 13 12S -0.56 12 2A 2 19 12S -0.78 12 2A 8 14 15S -0.72 12 2A 15 63 15S -0.78 12 2A 17 52 15S -0.8 12 2A 20 1 16S 0.22 12 2A 25 50 15S -0.78 12 2A 25 50 15S 0.14 12 2A 25 83 16S -0.69 12 2A 27 73 15S 0.2 12 2A 31 64 15S -0.73 12 2A 31 93 15S -0.77 12 2A 32 39 14S -0.85 12 2A 33 77 15S 0.26 12 2A 34 6 15S 0.17 12 2A 38 3 16S -0.53 12 2A 40 5 15S -0.87 12 2A 40 8 15S 0.13 12 2A 55 4 15S -0.79 12 2A 55 125 16S -0.86 12 2A 62 119 15S 0.26 12 2A 63 113 15S -0.75 12 L-16-288 Page 15 of 28 Water at Broached TSPs (Continued)
SG Row Tube TSP INCH %TW 2A 63 120 16S -0.7 12 2A 65 129 16S -0.82 12 2A 67 22 16S -0.77 12 2A 67 128 16S -0.85 12 2A 68 113 15S -0.73 12 2A 69 1 14S -0.77 12 2A 69 132 13S -0.73 12 2A 70 130 16S -0.87 12 2A 74 8 15S -0.87 12 2A 75 1 14S -0.73 12 2A 75 127 16S -0.74 12 2A 76 124 16S -0.85 12 2A 77 131 16S -0.84 12 2A 79 2 14S 0.26 12 2A 79 3 16S 0.18 12 2A 82 127 16S -0.83 12 2A 82 128 16S -0.85 12 2A 83 127 16S -0.81 12 2A 84 1 14S 0.28 12 2A 84 127 16S -0.81 12 2A 87 124 16S -0.32 12 2A 88 127 16S 0.19 12 2A 89 123 16S -0.91 12 2A 91 123 16S -0.36 12 2A 91 127 16S -0.62 12 2A 92 106 15S -0.76 12 2A 93 126 16S -0.76 12 2A 95 126 16S -0.86 12 2A 98 1 14S -0.78 12 2A 100 100 15S -0.74 12 2A 101 88 15S 0.18 12 2A 103 120 16S -0.78 12 2A 104 122 16S -0.77 12 2A 105 119 16S -0.79 12 2A 111 93 15S 0.22 12 2A 112 84 15S 0.19 12 2A 117 36 16S -0.86 12 2A 118 41 16S -0.69 12 2A 118 84 15S -0.75 12 2A 123 42 16S -0.72 12 2A 125 61 15S -0.66 12 2A 127 1 16S -0.77 12 L-16-288 Page 16 of 28 Water at Broached TSPs (Continued)
SG Row Tube TSP INCH %TW 2A 127 45 16S -0.75 12 2A 128 63 15S 0.21 12 2A 136 17 16S -0.77 12 2A 137 15 15S 0.16 12 2A 139 54 15S 0.17 12 2A 141 12 16S -0.72 12 2A 144 9 16S -0.67 12 2A 145 1 16S -0.86 12 2A 145 15 15S 0.17 12 2A 145 17 16S -0.72 12 2A 148 36 16S -0.7 12 2A 149 16 16S -0.72 12 2A 149 17 16S -0.8 12 2A 150 8 16S -0.74 12 2A 9 1 16S -0.8 11 2A 17 8 15S -0.76 11 2A 19 8 15S -0.83 11 2A 19 86 16S -0.84 11 2A 20 76 15S -0.82 11 2A 21 56 15S -0.82 11 2A 22 9 15S -0.85 11 2A 26 89 15S 0.18 11 2A 28 58 15S -0.79 11 2A 38 93 15S -0.75 11 2A 44 119 11S 0.35 11 2A 52 125 16S -0.85 11 2A 54 4 16S -0.82 11 2A 59 102 16S -0.77 11 2A 60 111 15S 0.24 11 2A 61 114 15S -0.84 11 2A 64 129 16S -0.88 11 2A 65 4 16S -0.88 11 2A 65 10 15S 0.26 11 2A 65 130 13S 0.26 11 2A 65 130 16S -0.82 11 2A 67 129 16S 0.18 11 2A 68 46 16S -0.63 11 2A 68 109 15S 0.24 11 2A 68 129 16S -0.79 11 2A 69 14 16S -0.69 11 2A 71 45 16S -0.84 11 2A 73 1 14S -0.67 11 L-16-288 Page 17 of 28 Water at Broached TSPs (Continued)
SG Row Tube TSP INCH %TW 2A 73 2 14S -0.72 11 2A 73 3 16S -0.98 11 2A 74 1 14S -0.75 11 2A 77 2 14S -0.82 11 2A 77 2 13S -0.7 11 2A 78 1 16S 0.18 11 2A 78 106 15S -0.79 11 2A 78 116 15S 0.22 11 2A 81 130 16S -0.94 11 2A 83 128 16S -0.87 11 2A 84 45 16S -0.62 11 2A 84 124 16S -0.69 11 2A 84 126 16S 0.11 11 2A 84 131 16S -0.89 11 2A 86 128 16S -0.84 11 2A 88 116 15S -0.71 11 2A 88 121 16S -0.36 11 2A 90 127 16S -0.83 11 2A 91 3 14S -0.75 11 2A 93 1 14S -0.26 11 2A 96 126 16S -0.76 11 2A 102 115 16S -0.32 11 2A 103 2 14S -0.71 11 2A 103 44 16S -0.34 11 2A 103 119 16S -0.32 11 2A 103 123 16S 0 11 2A 104 2 14S -0.78 11 2A 106 85 15S 0.24 11 2A 107 94 15S -0.69 11 2A 108 86 15S 0.19 11 2A 108 99 15S -0.84 11 2A 111 39 16S -0.84 11 2A 111 113 16S -0.81 11 2A 113 115 16S -0.91 11 2A 116 110 16S -0.65 11 2A 117 40 16S -0.93 11 2A 117 109 16S -0.28 11 2A 118 35 16S -0.69 11 2A 119 37 16S -0.61 11 2A 121 58 15S 0.17 11 2A 123 1 14S -0.75 11 2A 123 92 15S 0.2 11 L-16-288 Page 18 of 28 Water at Broached TSPs (Continued)
SG Row Tube TSP INCH %TW 2A 124 40 16S -0.75 11 2A 124 63 16S -0.77 11 2A 127 1 14S -0.78 11 2A 127 64 15S 0.19 11 2A 133 2 14S -0.77 11 2A 133 22 13S 0.29 11 2A 133 36 16S -0.83 11 2A 135 69 16S -0.74 11 2A 135 77 16S 0.11 11 2A 137 69 16S 0.19 11 2A 139 11 16S -0.73 11 2A 139 66 16S 0.15 11 2A 141 10 16S -0.75 11 2A 141 13 15S -0.75 11 2A 141 14 16S -0.7 11 2A 142 13 16S -0.69 11 2A 144 4 14S -0.65 11 2A 144 20 15S 0.21 11 2A 144 46 16S -0.63 11 2A 144 56 16S 0.15 11 2A 145 10 16S -0.64 11 2A 146 15 16S -0.75 11 2A 147 20 16S -0.63 11 2A 148 6 16S -0.65 11 2A 148 12 16S -0.67 11 2A 148 38 16S -0.75 11 2A 149 12 16S -0.68 11 2A 151 1 14S -0.8 11 2A 26 72 15S 0.2 10 2A 27 63 15S 0.21 10 2A 30 7 15S 0.24 10 2A 35 86 15S -0.83 10 2A 38 92 15S -0.79 10 2A 51 8 15S 0.17 10 2A 51 124 16S -0.94 10 2A 52 7 15S -0.8 10 2A 53 1 16S 0.13 10 2A 57 128 16S -0.83 10 2A 58 5 16S -0.66 10 2A 61 41 16S -0.57 10 2A 63 43 16S -0.94 10 L-16-288 Page 19 of 28 Water at Broached TSPs (Continued)
SG Row Tube TSP INCH %TW 2A 65 7 15S -0.8 10 2A 65 108 15S -0.79 10 2A 65 113 15S 0.27 10 2A 66 124 16S -0.86 10 2A 68 23 16S -0.76 10 2A 68 24 16S 0.14 10 2A 69 12 16S 0.2 10 2A 69 128 16S -0.78 10 2A 70 23 16S -0.74 10 2A 70 113 15S -0.81 10 2A 72 109 15S 0.23 10 2A 72 121 16S -0.84 10 2A 73 3 16S 0.18 10 2A 73 113 15S -0.77 10 2A 74 102 15S -0.84 10 2A 74 131 13S -0.75 10 2A 76 126 16S -0.77 10 2A 76 127 16S -0.84 10 2A 77 111 15S 0.19 10 2A 79 122 16S 0.2 10 2A 79 129 16S -0.87 10 2A 82 114 15S -0.76 10 2A 82 120 16S -0.83 10 2A 84 1 14S -0.78 10 2A 84 118 15S -0.74 10 2A 86 1 14S -0.79 10 2A 86 131 16S -0.77 10 2A 88 2 14S 0.23 10 2A 88 55 16S -0.91 10 2A 91 122 16S 0.19 10 2A 92 93 14S 0.28 10 2A 94 93 16S -0.74 10 2A 95 1 16S -0.63 10 2A 96 120 16S -0.83 10 2A 98 125 16S -0.9 10 2A 99 123 16S -0.79 10 2A 99 124 16S -0.85 10 2A 100 13 14S -0.77 10 2A 101 62 16S -0.83 10 2A 104 1 14S -0.73 10 2A 104 123 16S -0.91 10 2A 107 1 14S -0.78 10 L-16-288 Page 20 of 28 Water at Broached TSPs (Continued)
SG Row Tube TSP INCH %TW 2A 107 101 15S -0.31 10 2A 107 118 16S -0.87 10 2A 109 4 14S -0.7 10 2A 109 42 16S -0.88 10 2A 110 20 16S -0.67 10 2A 110 114 16S -0.73 10 2A 111 29 16S -0.83 10 2A 112 1 14S 0.28 10 2A 112 113 16S 0.28 10 2A 113 58 16S -0.96 10 2A 114 6 15S -0.79 10 2A 115 1 14S -0.8 10 2A 115 29 16S -0.77 10 2A 115 91 15S -0.71 10 2A 116 1 14S -0.84 10 2A 116 43 16S -0.84 10 2A 117 56 15S 0.2 10 2A 117 89 15S -0.8 10 2A 118 1 14S -0.78 10 2A 118 91 15S 0.16 10 2A 119 82 15S -0.79 10 2A 119 85 15S 0.19 10 2A 120 71 15S -0.79 10 2A 120 74 15S 0.22 10 2A 122 47 16S -0.65 10 2A 123 1 16S -0.78 10 2A 123 52 16S -0.75 10 2A 123 89 15S -0.71 10 2A 124 52 15S -0.69 10 2A 126 1 16S -0.85 10 2A 127 49 16S -0.67 10 2A 128 5 14S -0.8 10 2A 128 45 16S -0.77 10 2A 129 7 16S -0.72 10 2A 131 11 14S -0.78 10 2A 131 55 15S 0.21 10 2A 133 67 15S 0.21 10 2A 136 9 15S 0.24 10 2A 137 61 15S -0.87 10 2A 138 10 16S -0.77 10 2A 139 2 14S -0.74 10 2A 139 9 15S 0.2 10 L-16-288 Page 21 of 28 Water at Broached TSPs (Continued)
SG Row Tube TSP INCH %TW 2A 139 70 16S 0.17 10 2A 140 2 14S -0.7 10 2A 140 32 16S -0.75 10 2A 140 38 16S -0.74 10 2A 141 2 16S 0.14 10 2A 142 18 16S -0.64 10 2A 145 16 16S -0.64 10 2A 146 4 16S -0.68 10 2A 146 12 16S -0.69 10 2A 146 13 16S -0.73 10 2A 146 20 16S -0.63 10 2A 146 28 15S -0.91 10 2A 146 41 16S -0.72 10 2A 147 9 16S -0.88 10 2A 147 20 15S -0.92 10 2A 148 15 16S -0.76 10 2A 151 2 14S -0.7 10 2A 151 4 16S -0.84 10 1B 69 132 16S -0.33 24 1B 71 132 16S -0.34 23 1B 18 1 16S -0.82 21 1B 63 130 16S -0.32 19 1B 64 131 16S -0.36 19 1B 64 131 13S -0.69 18 1B 19 1 16S -0.89 17 1B 64 131 14S -0.71 17 1B 68 131 13S -0.6 17 1B 94 1 16S -0.29 17 1B 141 1 16S -0.78 17 1B 8 1 16S -0.82 16 1B 75 2 16S -0.65 16 1B 76 1 11S -0.68 16 1B 122 105 16S -0.85 16 1B 149 27 16S -0.73 16 1B 65 130 16S 0.19 15 1B 76 130 16S -0.81 15 1B 79 1 11S 0.34 15 1B 123 104 16S -0.81 15 1B 126 99 16S -0.76 15 1B 134 1 16S 0.14 15 1B 150 23 16S 0.13 15 1B 150 24 16S 0.13 15 L-16-288 Page 22 of 28 Water at Broached TSPs (Continued)
SG Row Tube TSP INCH %TW 1B 151 11 16S -0.67 15 1B 151 14 16S -0.84 15 1B 9 1 16S -0.86 14 1B 62 129 16S 0.19 14 1B 66 131 14S -0.71 14 1B 68 131 16S -0.81 14 1B 69 132 14S -0.66 14 1B 81 1 16S 0.14 14 1B 84 1 11S 0.41 14 1B 88 131 13S -0.67 14 1B 149 32 11S -0.61 14 1B 7 1 16S -0.81 13 1B 34 98 15S -0.86 13 1B 68 1 16S -0.75 13 1B 68 131 14S -0.71 13 1B 73 132 16S -0.34 13 1B 76 127 16S -0.88 13 1B 77 1 11S 0.28 13 1B 125 90 16S 0.88 13 1B 148 39 16S 0.2 13 1B 40 112 15S -0.86 12 1B 56 122 15S 0.24 12 1B 58 1 11S -0.62 12 1B 66 130 16S -0.71 12 1B 74 3 16S -0.83 12 1B 78 1 11S 0.43 12 1B 138 1 16S 0.07 12 1B 151 13 16S 0.15 12 1B 10 4 16S -0.8 11 1B 15 1 16S -0.81 11 1B 24 88 15S 0 11 1B 27 1 16S -0.75 11 1B 57 125 15S -0.85 11 1B 65 130 13S 0.32 11 1B 76 1 16S 0.15 11 1B 83 132 13S -0.74 11 1B 2 24 01S -0.37 10 1B 25 7 16S -0.81 10 1B 47 1 16S -0.85 10 1B 62 1 16S -0.82 10 1B 75 132 14S -0.7 10 L-16-288 Page 23 of 28 Water at Broached TSPs (Continued)
SG Row Tube TSP INCH %TW 1B 82 1 11S 0.39 10 1B 94 129 14S 0.24 10 L-16-288 Page 24 of 28 Wear at Drilled TSPs SG Row Tube TSP Max Depth Axial Extent Circumferential PDA
[%TW] [in] Extent [°] [%]
2A 142 1 15S 17 0.21 63 3 1B 48 123 15S 26 0.21 62 4.5 1B 38 115 15S 21 0.21 71 4.1 1B 37 114 15S 18 0.21 67 3.3 L-16-288 Page 25 of 28 Section 5 Number of Tubes Plugged During the Inspection Outage for Each Degradation Mechanism (TS 5.6.6.e)
Degradation Mechanism SG 2A SG 1B Wear at broached TSP 10 0 L-16-288 Page 26 of 28 Section 6 The Number and Percentage of Tubes Plugged to date, and the Effective Plugging Percentage in Each SG (TS 5.6.6.f)
SG 2A SG 1B Total Total Plugged 11 0 11 Percentage Plugged 0.070% 0 0.035%
L-16-288 Page 27 of 28 Section 7 The Results of Condition Monitoring, Including the Results of Tube Pulls and In-Situ Testing (TS 5.6.6.g)
No degradation was identified that failed to meet condition monitoring criteria. All steam generator performance criteria were met analytically during Cycle 19. As such, in-situ pressure testing was not required, and none was performed. No tube pulls were planned, and none were performed.
L-16-288 Page 28 of 28 Section 8 Replacement SG Tubing Structural Limit Associated with the Most Limiting LBLOCA for the Replacement SG FLAW TYPE Allowable Flaw Size Volumetric Degradation Uniform 360° thinning over a given TSP length 29.3%TW No limiting LBLOCA 135° circumferential extent over a tapered TSP length loading Axial Cracking No limiting LBLOCA All cases loading Circumferential Cracking Uniform circumferential, with crack plane rotation 6.0% PDA Part circumferential, with crack plane rotation 6.1% PDA No crack plane rotation 30.6% PDA