L-08-152, Submittal of Technical Specification 6.9.1.12 Steam Generator Tube Inspection Report for January 2008 15th Refueling Outage
| ML082110266 | |
| Person / Time | |
|---|---|
| Site: | Davis Besse  |
| Issue date: | 07/25/2008 |
| From: | Allen B FirstEnergy Nuclear Operating Co |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| L-08-152 | |
| Download: ML082110266 (45) | |
Text
FENOC 5501 North State Route 2 FirstEnergyNuclear OperatingCompany Oak Harbor,Ohio 43449 Barry S. Allen 419 -321-7676 Vice President- Nuclear Fax: 419 -321-7582 July 25, 2008 L-08-152 ATTN: Document Control Desk U. S. Nuclear Regulatory Commission Washington, DC 20555-0001
Subject:
Davis-Besse Nuclear Power Station, Unit 1 Docket No. 50-346, License No. NPF-3 Technical Specification 6.9.1.12 Steam Generator Tube Inspection Report The FirstEnergy Nuclear Operating Company (FENOC), in accordance with the Davis-Besse Nuclear Power Station, Unit 1 (DBNPS) Technical Specification 6.9.1.12, "Steam Generator Tube Inspection Report," hereby submits a report of the steam generator tube inspections performed pursuant to Technical Specification 6.8.4.g, "Steam Generator (SG) Program." The attached report summarizes the steam generator tube inspections performed during the DBNPS January 2008 Fifteenth Refueling Outage (15RFO).
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, at (330) 761-6071.
Sincerely, jg, _!5ý Xýý Barry S. Allen Attachment cc: NRC Region III Administrator NRR Project Manager - Davis-Besse Nuclear Power Station NRC Resident Inspector - Davis-Besse Nuclear Power Station Executive Director, Ohio Emergency Management Agency, State of Ohio (NRC Liaison)
Utility Radiological Safety Board A4o~(
Attachment L-08-152 Davis-Besse Nuclear Power Station, Unit 1 Steam Generator Tube Inspection Report Page 1 of 44 Following completion of a steam generator inspection performed in accordance with the Davis-Besse Nuclear Power Station, Unit 1 (DBNPS) Technical Specification (TS) 6.8.4.g, "Steam Generator (SG) Program," TS 6.9.1.12, "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 January 2008 Fifteenth Refueling Outage (15RFO).
The organization of the report is as follows:
Section 1 The Scope of Inspections Performed on Each SG (TS 6.9.1.12.a),
Section 2 Active Degradation Mechanisms Found (TS 6.9.1.12.b),
Section 3 Nondestructive Examination Techniques Utilized for Each Degradation Mechanism (TS 6.9.1.12.c),
Section 4 Location, Orientation (if Linear), and Measured Sizes (if Available) of Service Induced Indications (TS 6.9.1.12.d),
Section 5 Number of Tubes Plugged or Repaired During the Inspection Outage for Each Active Degradation Mechanism (TS 6.9.1.12.e),
Section 6 Total Number and Percentage of Tubes Plugged or Repaired to Date (TS 6.9.1.12.f),
Section 7 The Results of Condition Monitoring, Including the Results of Tube Pulls and In-situ Testing (TS 6.9.1.12.g),
Section 8 The Effective Plugging Percentage for All Plugging and Tube Repairs in Each SG (TS 6.9.1.12.h), and Section 9 Repair Method Utilized and the Number of Tubes Repaired by Each Repair Method (TS 6.9.1.12.i).
The following is a listing of the more common acronyms that are used throughout this report.
AFW Auxiliary Feedwater AX LEN Axial Length of Indication CIRC LEN Circumferential Length in Degrees of Tubing Circumference DEG MODE Mode of Degradation DEPTH % TW Flaw Depth in Percent of Wall Thickness GMD Geometric Mean Distortion IGA Intergranular Attack IND Indication Type/Orientation
Attachment L-08-152 Page 2 of 44 LSE Lower Sleeve End LTE Lower Tube End LTS Lower Tube Sheet MAA Multiple Axial Tube-end Anomaly MAI Multiple Axial Indication MBM Manufacturing Burnish Mark MCO Mid-Cycle Outage NQS Non Quantifiable Signal ODI Outside Diameter Indication ODSCC Outside Diameter Stress Cracking Corrosion OPB Outside Pressure Boundary (above repair roll)
PWSCC Primary Water Stress Cracking Corrosion RFO Refueling Outage SAA Single Axial Tube-end Anomaly SAI Single Axial Indication SBLOCA Small Break Loss of Coolant Accident SCI Single Circumferential Indication SG Steam Generator SLB Steam Line Break SVI Single Volumetric Indication TSP Tube Support Plate USE Upper Sleeve End UTE Upper Tube End UTS Upper Tube Sheet xxS Support Plate Number
Attachment L-08-1 52 Page 3 of 44 Section 1 Response to Technical Specification 6.9.1.12.a, The Scope of Inspections Performed on Each SG Number and Extent of Steam Generator Tubes Insp~ected Inspections/Examinations Steam Generator SG 2-A SG1-13 Inspection of all newly installed repair rolls. 39 13 Periphery AFW Header to tube gap analysis to determine if the 382 411
-header is moving. ____
Full length bobbin examination of all in-service non-sleeved tubing. 14878 15213 Full length bobbin examination of1100% sleeves. 199 212 Rotating Plus Point exam of the sleeve at the point of entry (USE) 199 212 and parent tube pressure boundary portion extending approximately 6 inches past the sleeve end (LSE) of 100% of the sleeves (the parent tube between the bottom of the upper most sleeve roll and the top of the middle sleeve roll may be excluded from inspection
-since it is not pressure boundary).
Rotating Plus Point inspection of non-sleeved in-service upper tube 14679 15001 roll expansions (100%) including non stress relieved upper repair roll
-expansions and factory re-rolls.
Rotating Plus Point coil examination of 29% of the non-sleeved in- 4257 4351 service tubes in the upper tube sheet region from tube end including tube end, upper roll expansion and crevice to upper tube sheet exit. ____
Rotating Plus Point inspection of 25% of the in-service stress 3721 0
-relieved lower tube roll expansions and tube ends in SG 2-A.
Rotating Plus Point inspection of in-service stress relieved lower tube 0 15213 roll expansions and tube ends in SG 1-B 100%. ____
Rotating Plus Point coil examination of the tubes bordering the 91 81
-sleeve region.
Rotating Plus Point coil examination of all of the flaw-like indications 537 506 (I codes, new dents, new MBMs and wear per the Degradation
-Assessment Report) reported from bobbin. ____
Rotating Plus Point coil examination of all NOSs and MBM 62 86
-indications above 14S. ____
Rotating Plus Point probe coil examination of all NOSs and MBM 0 149 indications above lO'S -2" in outer 30 rows (expansion in SG 1-B
-only).__ _ _ _
Rotating Plus Point coil examination of all dent indications below 14S 208 1,79 (100% sample of all previously reported and new dents using a
-greater than or equal to 2.5 volt bobbin threshold). ____
Attachment L-08-152 Page 4 of 44 Number and Extent of Steam Generator Tubes Inspected (continued)
Inspections/Examinations SG 2-A SG 1-B Rotating Plus Point coil examination of all dent indications greater 316 416 than or equal to 1 volt between 14S and UTE in the non-periphery region.
Rotating Plus Point coil examination of all dent indications greater 26 19 than or equal to 0.5 volts between 14S and UTE in the periphery region.
Rotating Plus Point coil sample inspection of lower tubesheet sludge 1192 1294 pile region tubes.
Sleeve Bobbin and Rotating Plus Point coil inspection of all 0 40 previously identified gross mean distortions (39 tubes SG 1-B - one new GMD was reported during 15RFO).
Rotating Plus Point probe coil inspection of all previously identified 0 23 and new magnetic stain (MAG) indications (23 tubes SG 1-B).
Rotating Plus Point probe inspection of 50% of the Hot Leg rolled 280 117 Plugs.
Visual Welded Plug Exam (VT-1) (100%.) 33 19 Visual Plug exams of all Plugs in Upper and Lower (100%). 1158 488 Total Exams 42257 54043
Attachment L-08-152 Page 5 of 44 Section 2 Response to Technical Specification 6.9.1.12.b, Active Degradation Mechanisms Found Degradation Mechanism Steam Generator SG 2-A SG 1-B Upper Tube End Axial PWSCC 61 19 Upper Tube End Circumferential PWSCC 1 0 Freespan Volumetric Degradation Adjacent to TSPs 8 10 Upper, Lower and Tube Sheet Region Volumetric 1 1 Wear at Tube Supports 582 347 Freespan Axial ODSCC / IGA at Upper Bundle 0 0 Denting from Auxiliary Feedwater Stabilization Axial ODSCC / IGA (Groove IGA) 15 27 Upper Roll / Reroll Transition PWSCC 3 2 Lower Tube End and Lower Tube End Expansion 0 1 Transition PWSCC
Attachment L-08-1 52 Page 6 of 44 Section 3 Response to Technical Specification 6.9.1.12.c, Nondestructive Examination Techniques Utilized for Each Degradation Mechanism During the DBNPS 15RFO, the tubing in the DBNPS SGs was examined. The examinations were conducted by AREVA to meet the requirements of the DBNPS Technical Specifications.
The eddy current examinations were performed utilizing various eddy current probes. The bobbin coil technique was used to perform the standard American Society of Mechanical Engineers (ASME) Code examination for flaw detection. This technique was applied to the complete length of all in-service tubes. The Rotating Plus Point (RPP) technique was used to examine specific areas of interest. These areas included upper tube end roll expansion regions, upper tubesheet crevice region, critical areas of tubes bordering the sleeved (lane and wedge) region, non-stress relieved roll transitions, the lower tubesheet crevice region, and selected dent locations. These techniques were also used to characterize indications of interest reported by the bobbin technique. Both RPP and bobbin techniques were used to examine tube sleeves. The RPP probe was applied to the rolled regions and lower sleeve end while the bobbin probe was used to examine the unrolled portion. Both bobbin coil and the pancake coil were used to provide depth sizing of Tube Support Plate wear indications. The largest Tube Support Plate wear indication depths from either technique are reported. The examination techniques utilized were qualified for detection of the relevant and potential degradation mechanisms. This qualification is in accordance with Electric Power Research Institute (EPRI) Pressurized Water Reactor Steam Generator Examination Guidelines, Revision 6.
NDE Examination Techniques Degradation Location Probe Type ETSS
- Mechanism ODSCC / IGA or Tubesheet Bobbin 96009.1 Volumetric Crevice Degradation ODSCC / IGA or Freespan or Near Bobbin 96007.1, 96008.1 Volumetric TSPs Degradation Wear TSPs Bobbin 96004.1 ODSCC or PWSCC Sleeve Bobbin 96008.1 or Volumetric Degradation
Attachment L-08-152 Page 7 of 44 NDE Examination Techniaues (continued)
Degradation Location Probe Type ETSS
- Mechanism TSP Damage or TSP Bobbin Loose Parts PWSCC Tube Ends and RPP 20511.1, 20510.1 Roll Expansions ODSCC/ IGA Tubesheet RPP 21409.1, 22401.1, Crevice or near 21410.1 Dents Wear TSPs RPP 96910.1 ODSCC/ IGA Freespan and RPP 21409.1, 21401.1, Expansion 21410.1, 22842.1, Transition 22842.3 PWSCC Sleeve RPP 20511.1, 20510.1, 96912.1, 96912.2 Plug Cracking Welded Plugs Visual Examination
- 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 of the EPRI Pressurized Water Reactor Steam Generator Examination Guidelines.
Attachment L-08-152 Page 8 of 44 Section 4 Response to Technical Specification 6.9.1.12.d, Location, Orientation (if Linear), and Measured Sizes (if Available) of Service Induced Indications Axial Indications Count SG Row Tube Ind TSP Inch1 Volts Depth Ax Len Deg Mode 1 2-A 27 22 SAI UTE -3.05 1.49 99 0.26 Reroll Transition PWSCC 2 2-A 124 100 MAI UTE -3.45 0.47 69 0.26 Reroll Transition PWSCC 3 2-A 50 48 MAI UTE -1.34 0.89 41 0.15 Roll Transition PWSCC 4 2-A 126 76 SAI UTE -3.07 1.01 50 0.18 Reroll Transition PWSCC 5 2-A 15 70 MAI UTE -3.05 1.42 99 0.46 Reroll Transition PWSCC 6 2-A 21 49 MAI UTE -3.25 1.92 99 0.32 Reroll Transition PWSCC 7 2-A 25 81 MAI UTE -2.9 1.21 90 0.18 Reroll Transition PWSCC 8 2-A 26 80 MAI UTE -3.4 1.50 76 0.26 Reroll Transition PWSCC 9 2-A 126 77 SAI UTE -3.57 1.56 91 0.31 Reroll Transition PWSCC 10 2-A 66 1 SAI 15S -3.27 0.14 20 0.40 Groove IGA 11 2-A 118 106 SAI UTE -3.05 1.00 92 0.29 Reroll Transition PWSCC 12 2-A 118 104 MAI UTE -3.06 0.68 32 0.18 Reroll Transition PWSCC 13 2-A 63 78 SAI UTE -3.14 0.45 79 0.28 Reroll Transition PWSCC 14 2-A 43 118 MAI UTE -3.05 0.92 99 0.26 Reroll Transition PWSCC 15 2-A 120 106 MAI UTE -3.12 0.60 75 0.24 Reroll Transition PWSCC 16 2-A 104 107 MAI UTE -1.52 0.62 60 0.18 Roll Transition PWSCC 17 2-A 126 99 SAI 15S -3.69 0.13 16 0.47 Groove IGA 18 2-A 70 84 SAI UTE -1.52 0.43 40 0.16 Roll Transition PWSCC 19 2-A 67 3 MAI UTE -3.11 0.86 71 0.21 Reroll Transition PWSCC 20 2-A 126 99 SAI 15S -2.84 0.15 21 0.24 Groove IGA 21 2-A 150 18 SAI 15S -4.41 0.19 7 1.68 Groove IGA 22 2-A 105 107 MAI UTE -2.93 0.53 54 0.22 Reroll Transition PWSCC 23 2-A 113 105 SAI UTE -2.94 0.56 46 0.20 Reroll Transition PWSCC 24 2-A 119 80 MAI UTE -3.55 0.82 73 0.22 Reroll Transition PWSCC
Attachment L-08-1 52 Page 9 of 44 Axial Indications (continued)
Count SG Row Tube Ind TSP Inch1 Volts Depth Ax Len Deg Mode 25 2-A 126 99 SAI 15S -2.46 0.09 5 0.24 Groove IGA 26 2-A 91 8 MAI UTE -3.68 0.70 80 0.28 Reroll Transition PWSCC 27 2-A 66 1 SAI 15S -3.67 0.15 7 0.50 Groove IGA 28 2-A 66 110 SAI 15S -0.83 0.20 1 0.12 Groove IGA 29 2-A 116 112 SAI 15S -1.55 0.31 1 0.76 Groove IGA 30 2-A 11 2 SAI 15S -2.19 0.17 1 0.67 Groove IGA 31 2-A 11 2 SAI 15S -2.63 0.15 1 0.37 Groove IGA 32 2-A 63 1 SAI 15S -6.02 0.30 1 0.47 Groove IGA 33 2-A 149 24 SAI 15S 1.64 0.49 44 0.91 Groove IGA 34 2-A 150 19 SAI 15S 2.59 0.11 15 0.35 Groove IGA 35 2-A 150 18 SAI 15S 2.30 0.25 64 0.21 Groove IGA 36 2-A 148 24 SAI 15S 1.59 0.12 5 0.29 Groove IGA 37 1-B 40 104 MAI UTE -2.92 1.00 71 0.23 Reroll Transition PWSCC 38 1-B 29 66 MAI UTE -3.23 0.47 75 0.25 Reroll Transition PWSCC 39 I-B 90 54 SAI LTE 1.48 0.79 59 0.18 Roll Transition PWSCC 40 1-B 69 62 SAI UTS -21.59 0.12 0 1.28 Groove IGA 41 1-B1 69 62 SAI UTS -19.55 0.14 15 0.74 Groove IGA 42 1-B 71 61 MAI UTS -23.29 0.31 0 1.20 Groove IGA 43 1-B 71 61 SAI UTS -20.83 0.17 0 0.31 Groove IGA 44 1--B 5 1 SAI 15S -1.47 0.20 1 0.32 Groove IGA 45 1-B 5 1 SAI 15S -3.09 0.17 1 0.82 Groove IGA 46 1-B 61 1 SAI 15S -4.20 0.11 37 0.15 Groove IGA 47 1-B 61 1 SAI 15S -3.94 0.15 41 0.43 Groove IGA 48 1-B 61 1 SAI 15S -3.35 0.15 39 0.41 Groove IGA 49 1-B 7 1 SAI 15S -1.59 0.12 1 0.53 Groove IGA 50 1-B 88 1 SAI 15S 6.00 0.20 53 0.72 Groove IGA 51 1-B 83 130 SAI UTS -13.31 0.22 36 0.35 Groove IGA 52 1-B 107 118 SAI 10S -1.17 0.13 1 0.41 Groove IGA 53 1-B 107 118 SAI 10S -1.44 0.10 1 0.17 Groove IGA 54 1-B 107 118 MAI 10S -1.92 0.08 1 0.96 Groove IGA 55 1-B, 108 117 SAI 10S 8.01 0.14 34 0.85 Groove IGA 56 1-B 108 117 MAI 10S 4.43 0.20 1 0.90 Groove IGA 57 1-B 108 119 SAI 10S 7.85 0.10 1 0.20 Groove IGA 58 1-B 117 32 SAI 14S 17.12 0.19 79 0.18 Groove IGA 59 1-B 142 64 MAI 15S -2.94 0.19 23 2.62 Groove IGA 60 1-B 71 68 SAI UTE -1:35 0.20 87 0.14 Roll Transition PWSCC 61 1-B 6 51 SAI 15S -1.67 0.26 70 0.40 Groove IGA 62 1-B 6 49 SAI 15S -1.41 0.23 76 0.61 Groove IGA 63 1-B 66 1 SAI 15S -2.85 0.08 49 0.18 Groove IGA 64 1-B 66 1 SAI 15S -2.12 0.14 45 0.56 Groove IGA 65 1-B 26 98 SAI 153 -1.54 0.25 56 0.79 Groove IGA
Attachment L-08-152 Page 10 of 44 Axial Indications (continued)
Count SG Row Tube Ind TSP Inch1 Volts Depth Ax Len Deg Mode 66 1-B 36 91 SAI UTE -3.46 0.70 62 0.21 Reroll Transition PWSCC 67 1-B 43 108 MAI UTE -3.47 0.44 25 0.28 Reroll Transition PWSCC 68 1-B 101 57 MAI UTE -1.46 0.64 44 0.16 Roll Transition PWSCC 69 1-B 131 89 SAI 15S 1.65 0.28 38 0.20 Groove IGA 70 1-B 26 98 SAI 15S -2.30 0.19 22 0.46 Groove IGA 71 1-B 78 58 MAI UTE -3.31 0.57 51 0.26 Reroll Transition PWSCC Circumferential Indications Not in Previously Rerolled Tubes Count Row Tube d TSP Volts Inch Depth Circ LenDeg Mode 1 2-A 100 1 SCI UTE 0.78 -0.33 56 0.21 Tube End PWSCC Volumetric Indications (Not in Previously Rerolled Tubes)
Count SG Row Tube Ind TSP Inch1 Volts Depth Ax Len CirL Deg Mode I Len 1 2-A 61 126 SVI 15S -2.87 0.18 1 0.41 0.25 ODI-VOLUMETRIC 2 2-A 143 12 SVI UTE -0.67 4.88 87 0.35 0.33 ID LOOSE PART IMPACT 3 2-A 85 7 SVI UTE -3.72 0.26 12 0.23 0.23 VOL IGA in Roll Transition 4 2-A 4 7 SVI 15S -1.25 0.33 27 0.35 0.36 ODI-VOLUMETRIC 5 2-A 15 77 SVI 15S -3.80 0.28 41 0.23 0.36 ODI-VOLUMETRIC 6 2-A 13 74 SVI 15S -1.22 0.39 29 0.41 0.31 ODI-VOLUMETRIC 7 2-A 13 73 SVI 15S -3.34 0.38 23 0.76 0.19 ODI-VOLUMETRIC 8 2-A 12 70 SVI 15S -3.37 0.14 4 0.29 0.15 ODI-VOLUMETRIC 9 2-A 11 68 SVI 15S -3.26 0.26 12 0.47 0.31 ODI-VOLUMETRIC 10 2-A 66 1 SVI 15S -1.38 0.12 25 0.30 0.28 ODI-VOLUMETRIC 11 1-B 137 1 SVI 15S -1.53 0.29 21 0.99 0.35 ODI-VOLUMETRIC 12 1--B 2 2 SVI 15S -2.20 0.33 8 0.81 0.26 ODI-VOLUMETRIC 13 1-B 2 2 SVI 15S -3.07 0.20 8 0.52 0.26 ODI-VOLUMETRIC 14 1-B 3 1 SVI 15S -3.35 0.22 12 0.64 0.36 ODI-VOLUMETRIC ANCHOR PIN DEFORMAIN 15 1-B 87 60 SVI LTE 0.61 1.86 26 0.15 0.23 DEFORMATION
Attachment L-08-152 Page 11 of 44 Volumetric Indications (Not in Previously Rerolled Tubes) (Continued)
Count SG Row Tube Ind TSP Inch1 Volts Depth Ax Len CirL Deg Mode
_ __ ____ Len _ _ _ _ _ _ _ _ _ _ _
16 1-B 88 1 SVI 15S -3.07 0.21 25 0.26 0.23 ODI-VOLUMETRIC 17 1-B 95 53 SVI UTS -13.65 0.26 23 0.35 0.15 ODI-VOLUMETRIC 18 1-B 136 81 SVI 15S -2.79 0.10 35 0.21 0.29 ODI-VOLUMETRIC 19 1-B 132 85 SVI 15S -1.11 0.14 1 0.15 0.12 ODI-VOLUMETRIC 20 1-B 129 93 SVI 15S -1.28 0.22 13 0.71 0.23 ODI-VOLUMETRIC 21 1--B 11 66 SVI 15S -3.33 0.18 12 0.41 0.36 ODI-VOLUMETRIC New Tube End Indications (Not in Previously Rerolled Tubes)
Count SG Row Tube Ind TSP Inch1 Volts 1 2-A 17 12 MAA UTE -0.26 1.56 2 2-A 19 15 SAA UTE -0.19 1.28 3 2-A 20 30 SAA UTE -0.21 .0.98 4 2-A 14 9 SAA UTE -0.23 1.65 5 .2-A 14 30 SAA UTE -0.20 0.61 6 2-A 13 9 SAA UTE -0.23 1.54 7 2-A 131 6 SAA UTE -0.31 0.67
- 8. 2-A 143 31 MAA UTE -0.28 1:32 9 2-A 32 37 SAA UTE -0.25 0.99 10 2-A 55 4 SAA UTE -0.29 2.13 11 2-A 61 3 SAA UTE -0.25 0.96 12 2-A 45 21 SAA UTE -0.34 1.05 13 2-A 75 46 SAA UTE -0.24 0.98 14 2-A 88 10 SAA UTE -0.25 1.13 15 2-A 82' 12 SAA UTE -0.27 1.21 16 2-A 82 10 SAA UTE -0.25 1.33 17 2-A 118 102 SAA UTE -0.36 1.08 18 2-A 85 9 SAA UTE -0.25 1.22 19 2-A 87 5 SAA UTE -0.33 0.82 20 2-A 121 103 SAA UTE -0.24 1.20 21 2-A 116 1 MAA UTE -0.25 1.17
. 22 2-A 29 89 SAA UTE -0.28 1.50 23 2-A 25 80 MAA UTE -0.29 1.63 24 2-A 72 124 SAA UTE -0.25 1.81 25 2-A 22 51 SAA UTE -0.32 1.59 26 2-A 26 53 SAA UTE -0.24 1.07 27 2-A 16 45 SAA UTE -0.25 1.19
Attachment L-08-152 Page 12 of 44 New Tube End Indications (Not in Previously Rerolled Tubes) (continued)
Count SG Row Tube Ind TSP Inch1 Volts 28 2-A 93 7 SAA UTE -0.29 1.16 29 2-A 16 73 SAA UTE -0.20 1.19 30 2-A 11 38 SAA UTE -0.32 0.93 31 2-A 13 40 MAA UTE -0.27 2.17 32 2-A 121 102 SAA UTE -0.30 1.09 33 2-A 104 107 SAA UTE -0.27 1.50 34 2-A 112 87 SAA UTE -0.37 1.73 35 2-A 115 109 SAA UTE -0.24 1.22 36 2-A 114 108 MAA UTE -0.31 1.08 37 2-A 100 23 SAA UTE -0.31 1.09 38 2-A 106 4 SAA UTE -0.27 1.21 39 2-A 26 48 SAA UTE -0.26 1.63 40 2-A 22 17 SAA UTE -0.25 1.10 41 2-A 20 17 SAA UTE -0.24 1.29 42 2-A 19 48 SAA UTE -0.27 11.1,1 43 2-A 8 33 SAA UTE -0.23. 1.52 44 1-B 45 77 SAA UTE -0.20 1.41 45 1-B 111 48 SAA UTE -0.13 1.07 46 1-B 8 41 MAA UTE 70.13 1.90 47 1-B 104 118 SAA UTE -0.17 1.56 48 1-B 111 29 SAA UTE -0.32 1.54 49 1-B 81. 104 SAA UTE -0.14 0.82 50 1-B 103 119 SAA UTE -0.31 0.94 51 1-B 38 18 SAA UTE -0.26 1.05 52 1-B 72 53 SAA UTE -0.10 1.02 53 1-B 108 117 SAA UTE -0.29 1.27 54 1-B 9 23 SAA UTE -0.30 2.24 55 1-B 54 50 MAA UTE -0.33 1.74 56 1-B 102 120 MAA UTE -0.21 1.79 57 1-B 36 90 SAA UTE -0.28 1.42
Attachment L-08-152 Page 13 of 44 Circumferential Indications Outside the Pressure Boundary Count SG Row Tube TSP Inch Ind Volts Volts Growth Circ Ext Circ Growth First Repair 1 2-A 1 14 UTE -0.27 OPB 2.04 0.35 0.42 0.01 14MCO 2 2-A 30 79 UTE -0.40 OPB 1.20 0.17 0.48 0.07 14MCO 3 2-A 31 84 UTE -0.27 OPB 3.82 0.51 0.33 0.01 14MCO 4 2-A 43 118 UTE -0.23 OPB 2.16 0.01 0.31 0.05 14MCO 5 2-A 63 1 UTE -0.26 OPB 2.21 0.36 0.46 0.02 13RFO 6 2-A 117 108 UTE -0.40 OPB 0.54 -0.28 0.37 -0.05 13RFO 7 2-A 118 107 UTE -0.34 OPB 1.03 0.15 0.12 -0.36 14MCO 8 2-A 124 101 UTE -0.27 OPB 0.71 0.10 0.23 -0.04 14MCO 9 2-A 134 2 UTE -0.24 OPB 0.78 0.24 0.18 -0.09 14MCO 10 2-A 142 65 UTE -0.31 OPB 2.21 0.41 0.42 -0.02 14MCO 11 2-A 151 10 UTE -0.24 OPB 4.92 2.16 0.43 -0.07 14MCO 12 1-B 65 58 UTE -1.38 OPB 1.25 -0.30 0.36 0.03 13RFO 13 1-B 84 82 UTE -0.11 OPB 2.37 1.28 0.67 0.39 14RFO 14 1-B 99 26 UTE -2.38 OPB 0.16 0.03 0.32 -0.01 13RFO All Wear Indications in SG 2-A bv Death COUNT ROW TUBE SUPP INCH1 VOLTS Depth %TW Exam 1 16 2 13S -0.65 1.03 31 Special Interest 2 13 1 13S -0.71 0.74 24 Special Interest 3 147 36 10S 0.66 1.04 22 Bobbin Exam 4 34 1 12S 0.58 0.62 21 Special Interest 5 146 33 10S 0.66 0.77 20 Special Interest 6 146 34 10S 0.62 0.84 19 Special Interest 7 12 1 13S -0.7 0.87 17 Bobbin Exam 8 88 76 11S 0.57 0.68 17 Bobbin Exam 9 86 127 14S -0.61 0.73 16 Bobbin Exam 10 16 3 13S -0.73 0.43 16 Special Interest 11 150 27 10S -0.7 0.97 16 Bobbin Exam 12 146 31 10S 0.66 0.64 15 Bobbin Exam 13 91 72 11S 0.49 0.5 15 Special Interest 14 36 1 13S -0.64 0.67 15 Bobbin Exam 15 149 17 10S 0.47 0.44 15 Special Interest 16 85 31 09S 0.73 0.74 15 Bobbin Exam 17 37 2 13S -0.58 0.5 15 Special Interest 18 74 1 14S 0.57 0.54 14 Special Interest 19 84 32 09S 0.76 0.55 14 Bobbin Exam
Attachment L-08-152 Page 14 of 44 All Wear Indications in SG 2-A by Depth (continued)
COUNT ROW TUBE SUPP INCH1 VOLTS Depth %TW Exam 20 12 2 13S -0.68 0.67 14 Bobbin Exam 21 72 1 14S 0.54 0.54 14 Special Interest 22 43 1 13S -0.68 0.73 14 Bobbin Exam 23 14 5 14S -0.63 0.38 14 Special Interest 24 86 127 13S 0.59 0.63 14 Bobbin Exam 25 150 25 10S -0.75 0.56 14 Bobbin Exam 26 45 1 12S 0.57 0.46 14 Special Interest 27 120 102 09S 0.67 0.47 13 Bobbin Exam 28 120 104 10S 0.55 0.5 13 Bobbin Exam 29 4 4 14S -0.71 0.44 13 Special Interest 30 5 45 14S -0.65 0.52 13 Special Interest 31 73 1 14S 0.5 0.51 13 Special Interest 32 33. 1 14S 0.58 0.34 13 Special Interest 33 146 37 10S 0.64 0.5 13 Bobbin Exam 34 28 1 13S -0.62 0.36 13 Special Interest 35 81 33 09S 0.72 0.49 13 Bobbin Exam 36 36 113 14S 0.59 0.48 12. Special Interest 37 71 2 13S -0.06 0.47 12 Special Interest 38 52 1 13S -0.74 0.6 12 Bobbin Exam 39 63 1 14S 0.61 0.32 12 Special Interest 40 145 38 10S 0.57 0.5 12 Special Interest 41 17 3 13S -0.73 0.33 12 Special Interest 42 51 1 11S -0.67 0.33 12 Special Interest 43 18 1 14S 0.47- 0.31 12 Special Interest 44 139 14 04S -0.83 0.45 12 Bobbin Exam 45 136 7 10S- 0.65 0.35 12 Special Interest 46 80 30 09S 0.63 0.34 12 Special Interest 47 3 3 14S -0.72 0.51 12 Special Interest 48 132 1 09S -0.07 0.42 12 Bobbin Exam 49 18 1 13S -0.7 0.58 12 Bobbin Exam 50 86 77 11S 0.5 0.49 12 Special Interest 51 43 1 14S -0.63 0.4 ý12 Special Interest 52 41 3 13S -0.63 0.47 12 Bobbin Exam 53 70 31 10S 0.69 0.33 12 Special Interest 54 85 32 09S 0.67 0.38 12 Special Interest 55 147 34 10S 0.64 0.48 12 Bobbin Exam 56 10 *4 14S -0.62 0.39 12 Special Interest 57 90 74 10S 0.6 0.47
- 12 Special Interest
Attachment L-08-152 Page 15 of 44 All Wear Indications in SG 2-A by Depth (continued)
COUNT ROW TUBE SUPP INCH1 VOLTS Depth %TW Exam 58 83 37 09S 0.77 0.28 11 Special Interest 59 74 71 11S 0.51 0.4 11 Bobbin Exam 60 150 19 10S 0.64 0.42 11 Bobbin Exam 61 75 73 10S 0.48 0.38 11 Bobbin Exam 62 82 78 10S 0.55 0.51 11 Bobbin Exam 63 86 75 11S 0.68 0.4 11 Bobbin Exam 64 148 30 10S -0.72 0.42 11 Bobbin Exam 65 150 25 10S 0.84 0.42 11 Bobbin Exam 66 36 1 12S 0.68 0.44 11 Bobbin Exam 67 90 74 11S 0.55 0.36 11 Bobbin Exam 68 .65 8 03S -0.71 0.29 11 Special Interest 69 148 32 10S 0.62 0.4 11 Bobbin Exam 70 79 71 15S -0.73 0.33 11 Special Interest 71 25 1 12S 0.57 0.56 11 Bobbin Exam 72 20 5 09S -0.81 0.39 11 Bobbin Exam 73 *54 127 14S 0.55 0.42 11 Special Interest 74 30 1 14S -0.66 0.29 11 Special Interest 75 15 2 13S -0.7 0.54 11 Bobbin Exam 76 40 117 14S 0.59 0.45 11 Special Interest 77 146 36 10S 0.62 0.55 11 Bobbin Exam 78 70 1 14S 0.53 0.41 11 Special Interest 79 10 2 14S -0.66 0.38 11 Special Interest 80 39 113 14S -0.77 0.48 11 Bobbin Exam 81 11 14 14S 0.58 0.29 11 Special Interest 82 149 26 10S 0.61 0.42 11 Special Interest 83 13 2 13S -0.68 0.55 11 Bobbin Exam 84 84 58 06S 0.63 0.36 11 Special Interest 85 88 69 14S 0.46 0.35 11 Special Interest 86 6 47 14S 0.75 0.43 11 Special Interest 87 98 127 13S -0.77 0.46 11 Bobbin Exam 88 53 3 09S 0.55 0.29 11 Special Interest 89 123 102 10S -0.72 0.38 10 Bobbin Exam 90 128 5 10S 0.5 0.55 10 Bobbin Exam 91 116 22 14S -0.77 0.38 10 Bobbin Exam 92 124 100 10S -0.67 0.36 10 Bobbin Exam 93 34 107 14S -0.61 0.4 10 Special Interest 94 73 61 14S 0.57 0.3 10 Special Interest 95 71 2 14S -0.73 0.36 10 Special Interest 96 37 1 14S 0.45 0.33 10 Special Interest
Attachment L-08-1 52 Page 16 of 44 All Wear Indications in SG 2-A bv Depth (continued)
COUNT ROW TUBE SUPP INCH1 VOLTS Depth %TW Exam 97 44 1 13S -0.6 0.28 10 Special Interest 98 125 100 10S -0.71 0.35 10 Bobbin Exam 99 41 1 13S -0.64 0.27 10 Special Interest 100 71 2 13S 0.66 0.38 10 Special Interest 101 140 1 10S -0.81 0.36 10 Bobbin Exam 102 148 40 14S 0.6 0.4 10 Bobbin Exam 103 11 1 13S -0.72 0.48 10 Bobbin Exam 104 11 21 14S 0.62 0.26 10 Special Interest 105 8 4 14S 0.65 0.33 10 Special Interest 106 150 3 09S 70.7 0.28 10 Special Interest 107 13 2 14S 0.53 0.45 10 Bobbin Exam 108 13 5 13S -0.63 0.27 10 Special Interest 109 28 7 09S -0.79 0.35 10 Bobbin Exam 110 84 60 14S -0.72 0.32 10 Special Interest 111 17 1 13S -0.66 0.5 10 Bobbin Exam 112 18 74 07S 0.62 0.39 10 Special Interest 113 149 26 10S -0.68 0.39 10 Special Interest 114 66 102 06S -0.54 0.34 10 Bobbin Exam 115 14 1 14S 0.51 0.25 10 Special Interest 116 25 1 13S -0.72 0.51 10 Bobbin Exam 117 133 4 10S 0.63 0.29 10 Special Interest 118 110 117 13S -0.77 0.36 10 Bobbin Exam 119 1 2 11S -0.83 0.35 10 Bobbin Exam 120 133 7 10S 0.61 0.55 10 Bobbin Exam 121 88 70 14S 0.52 0.31 10 Special Interest 122 137 6 10S -0.7 0.37 10 Bobbin Exam 123 113 4 14S 0.6 0.32 10 Special Interest 124 82 75 11S 0.56 0.39 10 Special Interest 125 77 48 03S 0.57 0.35 10 Bobbin Exam 126 150 20 14S 0.75 0.39 10 Special Interest 127 150 19 10S -0.63 0.39 10 Special Interest 128 67 16 10S -0.75 0.27 9 Special Interest 129 68 1 08S 0.54 0.3 9 Bobbin Exam 130 87 76 04S 0.81 0.31 9 Bobbin Exam 131 87 8 03S 0.79 0.43 9 Bobbin Exam 132 87 75 11S 0.45 0.34 9 Bobbin Exam 133 68 1 14S 0.59 0.33 9 Bobbin Exam 134 89 124 08S -0.46 0.44 9 Bobbin Exam 135 86 71 14S 0.59 0.28 9 Special Interest
Attachment L-08-152 Page 17 of 44 All Wear Indications in SG 2-A by Depth (continued)
COUNT ROW TUBE SUPP INCHI VOLTS Depth %TW Exam 136 91 70 11S 0.62 0.48 9 Bobbin Exam 137 83 79 11S 0.5 0.33 9 Special Interest 138 84 75 11S 0.64 0.33 9 Bobbin Exam 139 96 121 08S 0.52 0.27 9 Bobbin Exam 140 83 33 08S 0.8 0.31 9 Bobbin Exam 141 72 28 14S 0.63 0.25 9 Special Interest 142 72 66 03S 0.61 0.42 9 Bobbin Exam 143 77 68 13S 0.68 0.39 9 Bobbin Exam 144 73 78 10S -0.83 0.32 9 Bobbin Exam 145 76 67 15S -0.7 0.28 9 Special Interest 146 84 78 11S 0.64 0.31 9 Special Interest 147 21 1 13S -0.66 0.45 9 Bobbin Exam 148 130 93 13S -0.62 0.33 9 Special Interest 149 20 27 15S -0.86 0.31 9 Bobbin Exam 150 30 1 14S 0.28 0.23 9 Special Interest 151 16 80 11S 0.62 0.31 9 Bobbin Exam 152 148 38 14S 0.52 0.28 9 Special Interest 153 133 80 14S -0.72 0.3 9 Special Interest 154 26 9 09S -0.83 0.31 9 Bobbin Exam 155 148 30 10S 0.55 0.35 9 Bobbin Exam 156 35 108 14S -0.59 0.36 9 Special Interest 157 148 24 10S 0.62 0.33 9 Bobbin Exam 158 131 6 10S 0.63 0.26 9 Special Interest 159 147 46 14S 0.69 0.29 9 Special Interest 160 147 30 10S 0.71 0.34 9 Bobbin Exam 161 147 26 10S 0.64 0.29 9 Special Interest 162 146 32 10S 0.6 0.46 9 Bobbin Exam 163 141 67 13S 0.56 0.35 9 Bobbin Exam 164 17 4 13S -0.73 0.23 9 Special Interest 165 17 2 13S -0.68 0.33 9 Bobbin Exam 166 145 42 10S 0.64 0.36 9 Bobbin Exam 167 11 14 14S -0.6 0.23 9 Special Interest 168 46 113 13S 0.53 0.28 9 Special Interest 169 50 123 14S 0.64 0.35 9 Special Interest 170 130 7 10S 0.56 0.31 9 Bobbin Exam 171 127 6 10S 0.52 0.25 9 Special Interest 172 42 1 13S -0.7 0.43 9 Bobbin Exam 173 5 20 08S 0.35 0.37 9 Special Interest 174 36 2 13S -0.63 0.45 9 Bobbin Exam I-
Attachment L-08-152 Page 18 of 44 All Wear Indications in SG 2-A by Depth (continued)
COUNT ROW TUBE -SUPP INCH1 VOLTS Depth %TW Exam 175 149 27 10S -0.74 0.35 9 Bobbin Exam 176 42 30 05S 0.55 0.23 9 Special Interest 177 37 56 06S 0.42 0.33 9 Bobbin Exam 178 88 77 11S 0.57 0.44 9 Bobbin Exam 179 85 7 08S -0.68 0.25 8 Special Interest 180 84 76 lS 0.59 0.31 8 Bobbin Exam 181 85 122 09S -0.24 0.31 8 Bobbin Exam 182 4 1 14S 0.64 0.25 8 Special Interest 183 2 27 14S -0.63 0.3 8 Special Interest 184 1 2 11S 0.48 0.28 8 Bobbin Exam 185 15 2 14S 0.4 0.2 8 Special Interest 186 86 78 11S 0.69 0.32 8 Special Interest 187 85 77 11S 0.57 0.29 8 Bobbin Exam 188 87 106 02S 0.79 0.3 8 Bobbin Exam 189 86 75 10S 0.68 0.28 8 Bobbin Exam 190 87 77 11S 0.5 0.28 8 Bobbin Exam 191 4 41 13S 0.68 0.42 8 Bobbin Exam 192 11 3 09S -0.89 0.38 8 Bobbin Exam 193 5 12 10S 0.65 0.42 8 Bobbin Exam 194 8 23 14S 0.61 0.29 8 Special Interest 195 9 60 14S -0.71 0.31 8 Special Interest 196 86 95 05S -0.63 0.29 8 Bobbin Exam 197 12 1 13S 0.55 0.36 8 Bobbin Exam 198 26 2 12S 0.59 0.19 8 Special Interest 199 50 122 10S 0.55 0.3 8 Bobbin Exam 200 68 64 15S 0.63 0.24 8 Special Interest 201 68 72 15S 0.4 0.23 8 Special Interest 202 37 1 13S -0.59 0.34 8 Bobbin Exam 203 71 19 14S 0.57 0.27 8 Bobbin Exam 204 71 35 14S 0.65 0.2 8 Special Interest 205 71 77 11S 0.48 0.26 8 Bobbin Exam 206 80 79 10S 0.68 0.31 8 Special Interest 207 72 35 14S 0.59 0.28 8 Bobbin Exam 208 35 108 14S 0.63 0.32 8 Special Interest 209 73 2 14S 0.53 0.31 8 Special Interest 210 73 76 05S -0.35 0.27 8 Bobbin Exam
,211 30 6 09S 0.58 0.21 8 Special Interest 212 81 61 lS -0.69 0.4 8 Bobbin Exam 213 21 10 03S -0.7. 0.28 8 Bobbin Exam
Attachment L-08-152 Page 19 of 44 All Wear Indications in SG 2-A by Depth (continued),
COUNT ROW TUBE SUPP INCH1 VOLTS Depth %TW Exam 214 18 2 13S -0.64 0.38 8 Bobbin Exam 215 19 1 09S -0.82 0.4 8 Bobbin Exam 216 19 30 06S -0.14 0.21 8 Special Interest 217 37 1 12S 0.61 0.34 8 Bobbin Exam 218 20 80 10s 0.53 0.27 8 Bobbin Exam 219 75 7 13S -0.74 0.27 8 Bobbin Exam 220 80 79 10S -0.75 0.31 8 Special Interest 221 75 73 11S 0.51 0.28 8 Special Interest 222 21 88 09S 0.65 0.27 8 Special Interest 223 24 1 08S 0.72 0.27 8 Bobbin Exam 224 25 1 08S 0.49 0.37 8 Bobbin Exam 225 78 82 05S 0.67 0.34 8 Special Interest
.226 25 32 06S 0.49 0.2 8 Special Interest 227 15 7 133 -0.72 0.29 8 Bobbin Exam 228 52 1 12S 0.59 0.4 8 Bobbin Exam 229 114 3 14S 0.75 0.25 8 Special Interest 230 148 34 10S 0.62 0.32 8 Special Interest 231 149 27 10S 0.57 0.29 8 Bobbin Exam 232 128 6 10S 0.57 0.27 8 Bobbin Exam 233 137 78 14S 0.61 0.3 8 Special Interest 234 146 38 10S 0.66 0.39 8 Bobbin Exam 235 117 103 09S 0.7 0.33 8 Special Interest 236 129 8 10S 0.61 0.28 8 Bobbin Exam 237 89 128 13S -0.63 0.31 8 Bobbin Exam 238 114 113 10S 0.62 0.3 8 Bobbin Exam 239 129 85 14S 0.55 0.29 8 Bobbin Exam 240 116 107 09S -0.73 0.28 8 Bobbin Exam 241 90 74 10S -0.74 0.27 8 Bobbin Exam 242 133 4 10S -0.68 0.23 8 Special Interest 243 94 1 13S 0.61 0.3 8 Bobbin Exam 244 89 70 14S 0.63 0.24 8 Special Interest 245 122 103 10S -0.75 0.25 8 Special Interest 246 93 80 05S -0.44 0.26 8 Bobbin Exam 247 122 101 04S -0.77 0.29 8 Bobbin Exam 248 89 73 11S 0.64 0.33 8 Bobbin Exam 249 125 96 09S 0.38 0.29 8 Bobbin Exam 250 121 98 13S -0.79 0.28 8 Bobbin Exam 251 146 39 10S 0.72 0.3 8 Bobbin Exam 252 116 107 09S 0.69 0.23 7 Bobbin Exam
Attachment L-08-152 Page 20 of 44 All Wear Indications in SG 2-A by Depth (continued)
COUNT ROW TUBE SUPP INCH1 VOLTS Depth %TW Exam 253 74 72 10S -0.74 0.4 7 Bobbin Exam 254 75 6 14S 0.55 0.25 7 Special Interest 255 116 110 09S 0.58 0.32 7 Bobbin Exam 256 74 72 10S 0.53 0.38 7 Bobbin Exam 257 16 81 13S -0.7 0.34 7 Bobbin Exam 258 148 31 10S -0.72 0.35 7 Bobbin Exam 259 145 39 10S 0.66 0.33 7 Bobbin Exam 260 17 8 13S 0.43 0.17 7 Special Interest 261 10 1 14S 0.66 0.22 7 Special Interest 262 76 73 04S 0.55 0.25 7 Bobbin Exam 263 114 111 09S 0.67 0.24 7 Bobbin Exam 264 17 81 13S -0.62 0.34 7 Bobbin Exam 265 77 72 10S 0.55 0.33 7 Bobbin Exam 266 77 72 13S -0.83 0.33 7 Bobbin Exam 267 77 75 10S -0.81 0.24 7 Bobbin Exam 268 9 62 13S -0.59. 0.32 7 Bobbin Exam 269 9 1 13S -0.62 0.34 7 Bobbin Exam 270 69 32 10S 0.68 0.26 7 Bobbin Exam 271 75 73 10S -0.83 0.25 7 Bobbin Exam 272 65 93 14S 0.65 0.27 7 Special Interest 273 70 78 10S 0.55 0.24 7 Bobbin Exam 274 70 78 11S 0.44 0.25 7 Bobbin Exam 275 70 79 10S -0.81 0.35 7 Bobbin Exam 276 147 27 10S 0.64 0.33 7 Bobbin Exam 277 14 3 13S -0.66 0.33 7 Bobbin Exam 278 120 104 09S 0.74 0.25 7 Bobbin Exam 279 121 101 13S -0.65 0.28 7 Special Interest 280 12 5 13S -0.73 0.21 7 Special Interest 281 121 103 09S 0.65 0.31 7 Bobbin Exam 282 71 93 14S 0.53 0.23 7 Bobbin Exam 283 14 74 11S 0.59 0.25 7 Bobbin Exam 284 73 3 14S -0.68 0.25 7 Special Interest 285 118 104 09S 0.58 0.3 7 Bobbin Exam 286 148 ,28 10S -0.7 0.27 7 Bobbin Exam 287 118 103 10S -0.74 0.24 7 Bobbin Exam 288 117 107 10S -0.76 0.31 7 Bobbin Exam 289 65 77 11S 0.55 0.26 7 Special Interest 290 117 106 10S -0.69 0.25 7 Bobbin Exam 291 72 76 11S 0.55 0.25 7 Bobbin Exam.
Attachment L-08-152 Page 21 of 44 All Wear Indications in SG 2-A bv Deoth (continued)
COUNT ROW TUBE SUPP INCHI VOLTS Depth %TW Exam 292 148 3 10S 0.63 0.21 7 Bobbin Exam 293 122 98 14S -0.75 0.22 7 Special Interest 294 123 85 14S -0.75 0.23 7 Special Interest 295 146 37 04S -0.72 0.26 7 Bobbin Exam 296 144 48 08S -0.4 0.26 7 Bobbin Exam 297 145 54 13S 0.55 0.25 7 Bobbin Exam 298 148 27 10S -0.7 0.33 7 Bobbin Exam 299 72 1 13S 0.58 0.23 7 Bobbin Exam 300 129 5 10S 0.54 0.36 7 Bobbin Exam 301 125 93 14S -0.7 0.29 7 Special Interest 302 82 79 10S -0.85 0.24 7 *Bobbin Exam 303 82 127 13S 0.55 0.24 7 Bobbin Exam 304 102 4 08S -0.68 0.23 7 Bobbin Exam 305 20 84 13S -0.69 0.21 7 Special Interest 306 9 1 09S -0.75 0.35 7 Bobbin Exam 307 84 79 11S 0.67 0.26 7 Special Interest 308 137 6 10S 0.63 0.26 7 Bobbin Exam 309 91 72 11S -0.71 0.21 7 Special Interest 310 85 76 11S 0.61 0.27 7 Bobbin Exam 311 19 53 12S -0.84 0.36 7 Bobbin Exam 312 3 33 13S 0.66 0.35 7 Bobbin Exam 313 83 79 10S -0.83 0.24 7 Bobbin Exam 314 3 14 14S 0.6 0.26 7 Special Interest 315 87 69 05S -0.5 0.39 7 Bobbin Exam 316 130 8 10S 0.59 0.36 7 Bobbin Exam 317 27 5 09S 0.51 0.18 7 Special Interest 318 151 5 06S -0.5 0.22 7 Bobbin Exam 319 27 100 14S 0.65 0.26 7 Special Interest 320 130 91 10S 0.57 0.24 7 Bobbin Exam 321 89 72 11S - 0.69 0.33 7 Bobbin Exam 322 33 2 13S -0.75 0.22 7 Bobbin Exam 323 1 5 14S 0.65 0.29 7 Special Interest 324 38 3 12S 0.64 0.25 7 Bobbin Exam 325 82 1 11S 0.66 0.34 7 Bobbin Exam 326 140 67 13S 0.57 0.28 7 Bobbin Exam 327 80 58 15S -0.68 0.31 7 Bobbin Exam 328 81 61 07S 0.57 0.35 7 Bobbin Exam 329 7 2 13S -0.55 0.39 7 Bobbin Exam 330 139 74 04S -0.77 0.28 7 Bobbin Exam
Attachment L-08-152 Page 22 of 44 All Wear Indications in SG 2-A bv Depth (continued)
COUNT ROW TUBE SUPP INCH1 VOLTS Depth %TW Exam 331 81 2 14S 0.78 0.28 7 Special Interest 332 107 117 09S 0.47 0.32 7 Bobbin Exam 333 8 5 14S 0.66 0.24 7 Special Interest 334 7 11 1OS 0.57 0.23 7 Special Interest 335 141 65 13S -0.62 0.26 7 Special Interest 336 82 1 13S -0.69 0.34 7 Bobbin Exam 337 142 17 09S 0.59 0.18 7 Special Interest 338 82 44 08S 0.71 0.26 7 Bobbin Exam 339 121 104 09S 0.6 0.19 6 Bobbin Exam 340 129 93 13S -0.77 0.23. 6 Bobbin Exam 341 44 69 06S 0.53 0.22 6 Bobbin Exam 342 35 2 09S -0.9 0.28 6 Bobbin Exam 343 123 98 04S -0.64 0.2 6 Bobbin Exam 344 68 72 15S -0.68 0.2 6 Special Interest 345 43 118 13S 0.62 0.25 6 Special Interest 346 80 72 14S 0.52 0.2 6 Special Interest 347 123 93 14S -0.79 0.29 6 Bobbin Exam 348 49 5 09S -0.85 0.27 6 Bobbin Exam 349 47 122 14S 0.57 0.31 6 Bobbin Exam 350 131 7 1OS 0.59 0.33 6 Bobbin Exam 351 69 2 14S 0.6 0.22 6 Special Interest 352 69 5 loS -0.63 0.2 6 Bobbin Exam 353 121 101 09S 0.72 0.26 6 Bobbin Exam 354 126 99 1OS -0.73 0.2 6 Bobbin Exam 355 124 101 JOS -0.78 0.21 6 Bobbin Exam 356 145 46 1OS 0.64 0.21 6 Bobbin Exam 357 145 36 1OS 0.66 0.22 6 Bobbin Exam 358 42 4 13S -0.54 0.16 6 Special Interest 359 145 11 04S -0.83 0.29 6 Bobbin Exam 360 41 36 06S 0.54 0.29 6 Bobbin Exam 361 145 47 10S 0.66 0.29 6 Bobbin Exam 362 137 1 11S -0.76 0.21 *6 Bobbin Exam 363 11 67 08S -0.55 0.19 6 Bobbin Exam 364 128 7 lOS 0.63 0.34 6 Bobbin Exam 365 137 15 14S 0.69 0.18 6 Special Interest 366 39 116 13S -0.72 0.26 6 Bobbin Exam 367 127 2 11S 0.54 0.17 6 Special Interest
Attachment L-08-152 Page 23 of 44 All Wear Indications in SG 2-A by Depth (continued)
COUNT ROW TUBE SUPP INCH1 VOLTS Depth %TW Exam 368 39 62 06S -0.4 0.19 6 Bobbin Exam 369 38 1 12S 0.55 0.23 6 Bobbin Exam 370 125 98 10S -0.74 0.21 6 Bobbin Exam 371 23 1 13S -0.62 0.32 6 Bobbin Exam 372 88 83 05S -0.68 0.21 6 Bobbin Exam 373 145 48 10S 0.65 0.19 6 Special Interest 374 72 77 10S -0.75 0.24 6 Special Interest 375 114 40 06S 0.26 0.22 6 Bobbin Exam 376 93 48 05S 0.11 0.21 6 Bobbin Exam 377 4 35 13S -0.52 0.31 6 Bobbin Exam 378 150 15 10S 0.71 0.29 6 Bobbin Exam 379 5 45 13S -0.51 0.32 6 Bobbin Exam 380 5 45 13S 0.72 0.3 6 Bobbin Exam 381 92 129 07S -0.77 0.25 6 Bobbin Exam 382 82 26 07S -0.39 0.23 6 Bobbin Exam 383 92 69 11S 0.64 0.26 6 Bobbin Exam 384 7 41 08S 0.61 0.3 6 Bobbin Exam 385 69 49 10S 0.66 0.26 6 Bobbin Exam 386 80 71 05S 0.59 0.24 6 Bobbin Exam 387 80 39 09S -0.25 0.19 6 Special Interest 388 80 15 07S -0.52 0.22 6 Bobbin Exam 389 79 77 10S -0.85 0.2 6 Bobbin Exam 390 6 41 14S 0.61 0.28 6 Bobbin Exam 391 3 11 08S -0.26 0.2 6 Bobbin Exam 392 88 71 14S 0.5 0.2 6 Special Interest 393 1 15 13S -0.61 0.29 6 Bobbin Exam 394 2 25 14S -0.64 0.22 6 Special Interest 395 2 25 14S 0.59 0.21 6 Special Interest 396 89 75 10S 0.59 0.3 6 Bobbin Exam 397 87 73 12S 0.56 0.26 6 Bobbin Exam 398 84 79 05S -0.57 0.23 6 Bobbin Exam 399 87 71 13S 0.67 0.25 6 Bobbin Exam 400 8 4 14S -0.69 0.19 6 Special Interest 401 86 121 08S 0.48 0.24 6 Bobbin Exam 402 90 7 08S -0.79 0.28 6 Bobbin Exam 403 150 20 10S 0.66 0.29 6 Bobbin Exam 404 150 20 10S -0.67 0.32 6 Bobbin Exam
Attachment L-08-152 Page 24 of 44 All Wear Indications in SG 2-A bv Depth (continued)
COUNT ROW TUBE SUPP INCH1 VOLTS Depth %TW Exam 405 91 70 10S 0.53 0.28 6 Bobbin Exam 406 85 79 11S 0.5 0.21 6 Bobbin Exam 407 87 73 11S 0.74 0.27 6 Bobbin Exam 408 118 106 10S -0.76 0.25 6 Bobbin Exam 409 73 27 10S -0.11 0.27 6 Bobbin Exam 410 9 28 14S -0.68 0.22 6 Special Interest 411 148 26 10S 0.62 0.22 6 Bobbin Exam 412 31 3 10S 0.44 0.26 6 Bobbin Exam 413 72 51 10S 0.59 0.25 6 Bobbin Exam 414 148 1 10S -0.63 0.16 6 Special Interest 415 73 77 10S 0.55 0.33 6 Bobbin Exam 416 71 78 10S -0.83 0.28 6 Bobbin Exam 417 73 2 13S 0.65 0.31 6 Bobbin Exam 418 71 7 11S 0.7 0.2 6 Bobbin Exam 419 71 4 11S 0.56 0.28 6 Bobbin Exam 420 119 107 09S 0.65 0.27 6 Bobbin Exam 421 70 80 10S -0.72 0.22 6 Special Interest 422 120 104 10S -0.74 0.19 6 Bobbin Exam 423 13 66 07S 0.7 0.21 6 Bobbin Exam 424 146 43 10S 0.62 0.24 6 Bobbin Exam 425 72 1 08S 0.45 0.2 6 Bobbin Exam 426 114 113 10S -0.71 0.2 6 Bobbin Exam 427 149 18 10S 0.66 0.29 6 Bobbin Exam 428 75 72 11S 0.5 0.36 6 Bobbin Exam 429 74 73 05S 0.53 0.22 6 Bobbin Exam 430 75 34 04S 0.63 0.28 6 Bobbin Exam 431 74 63 04S 0.53 0.28 6 Bobbin Exam 432 75 28 04S .0.6 0.29 6 Bobbin Exam 433 10 1 14S -0.57 0.18 6 Special Interest 434 73 88 05S 0.39 0.2 6 Bobbin Exam 435 148 29 10S 0.66 0.29 6 Bobbin Exam 436 149 28 10S -0.72 0.28 6 Bobbin Exam 437 10 1 09S -0.75 0.18 5 Bobbin Exam 438 149 28 10S 0.62 0.23 5 Bobbin Exam 439 132 8 10S 0.52 0.28 5 Bobbin Exam 440 25 88 08S 0.66 0.21 5 Bobbin Exam 441 151 1 10S 0.42 0.26 5 Bobbin Exam
Attachment L-08-152 Page 25 of 44 All Wear Indications in SG 2-A by Deoth (continued)
COUNT ROW TUBE SUPP INCH1 VOLTS Depth %TW Exam 442 12 22 07S -0.52 0.22 5 Bobbin Exam 443 147 32 10S 0.66 0.19 5 Bobbin Exam 444 135 4 10S 0.63 0.19 5 Bobbin Exam 445 4 33 09S 0.76 0.25 '5 Bobbin Exam 446 24 46 06S -0.55 0.24 5 Bobbin Exam 447 5 42 13S 0.5 0.26 5- Bobbin Exam 448 3 29 13S -0.54 0.25 5 Bobbin Exam 449 7 12 10S 0.45 0.24 5 Bobbin Exam 450 136 4 10S 0.57 0.25 5 Bobbin Exam 451 6 14 10S 0.66 0.23 5 Bobbin Exam 452 7 36 08S 0.6 0.25 5 Bobbin Exam 453 5 46 13S 0.7 0.27 5 Bobbin Exam 454 149 31 10S 0.64 0.24 5 Bobbin Exam 455 146 18 13S -0.77 0.26 5 Bobbin Exam 456 4 40 12S -0.77 0.17 5 Bobbin Exam 457 16 18 06S 0.09 0.15 5 Bobbin Exam 458 25 1 12S -0.81 0.24 5 Bobbin Exam 459 113 111 09S 0.71 0.17 5 Bobbin Exam 460 117 104 14S 0.31 0.21 5 Special Interest 461 52 45 06S -0.28 0.24 5 Bobbin Exam 462 114 111 09S, -0.72 0.17 5 Bobbin Exam 463 100 125 13S -0.74 0.28 5 Bobbin Exam 464 54 50 06S 0.53 0.27 5 Bobbin Exam 465 83 40 06S -0.31 0.19 5 Bobbin Exam 466 82 97 06S -0.48 0.19 5 Bobbin Exam 467 104 93 07S 0.47 0.18 5 Special Interest 468 63 1 12S 0.42 0.22 5 Bobbin Exam 469 121 105 10S -0.72 0.22 5 Bobbin Exam 470 68 23 09S 0.8 0.17 5 Bobbin Exam 471 69 1 13S 0.52 0.16 5 Bobbin Exam 472 70 10 10S -0.68 0.21 5 Bobbin Exam 473 122 104 10S -0.76 0.24 5 Bobbin Exam 474 79 2 11S 0.59 0.27 5 Bobbin Exam 475 77 68 02S -0.36 0.14 5 Special Interest 476 115 102 14S -0.66 0.2 5 Special Interest 477 75 72 10S 0.59 0.27 5 Bobbin Exam 478 75 67 13S 0.62 0.25 5 Bobbin Exam
Attachment L-08-152 Page 26 of 44 All Wear Indications in SG 2-A by Depth (continued)
COUNT ROW TUBE SUPP INCH1 VOLTS Depth %TW Exam 479 78 23 04S -0.83 0.17 5 Bobbin Exam 480 109 118 09S -0.53 0.19 5 Bobbin Exam 481 116 111 08S -0.68 0.17 5 Bobbin Exam 482 119 105 10S 0.46 0.22 5 Bobbin Exam 483 79 25 11S -0.35 0.17 5 Bobbin Exam 484 31 13 08S -0.53 0.25 5 Bobbin Exam 485 72 77 05S 0.55 0.26 5 Bobbin Exam 486 72 28 11S 0.6 0.23 5 Bobbin Exam 487 119 5 07S -0.15 0.17 5 Bobbin Exam 488 122 102 10S 0.55 0.21 5 Bobbin Exam 489 116 109 09S 0.71 0.17 5 Bobbin Exam 490 127 97 10S -0.71 0.24 5 Bobbin Exam 491 32 61 06S -0.57 0.25 5 Bobbin Exam 492 88 93 06S -0.67 0.19 5 Bobbin Exam 493 34 84 03S -0.72 0.15 5 Bobbin Exam 494 130 10 13S 0.45 0.25 5 Bobbin Exam 495 89 74 09S 0.82 0.24 5 Bobbin Exam 496 35 68 06S -0.51 0.26 5 Bobbin Exam 497 89 75 11S 0.61 0.25 5 Bobbin Exam 498 129 7 10S 0.61 0.26 5 Bobbin Exam 499 37 1 11S -0.77 0.2 5 Bobbin Exam 500 89 124 08S 0.59 0.25 5 Bobbin Exam 501 52 125 13S -0.81 0.24 5 Bobbin Exam 502 128 84 14S -0.71 0.14 5 Special Interest 503 37 75 06S 0.2 0.18 5 Bobbin Exam 504 125 99 10S -0.74 0.21 5 Bobbin Exam 505 123 101 10S, 0.59 0.21 5 Bobbin Exam 506 124 100 13S -0.81 0.17 5 Bobbin Exam 507 84 75 12S 0.62 0.14 4 Bobbin Exam 508 5 42 13S -0.52 0.21 4 Bobbin Exam 509 95 1 08S -0.7 0.15 4 Bobbin Exam 510 1 10 04S -0.73 0.14 4 Bobbin Exam 511 2 25 13S -0.56 0.2 4 Bobbin Exam 512 77 124 13S -0.75 0.18 4 Bobbin Exam 513 87 98 05S 0.59 0.14 4 Bobbin Exam 514 150 8 10S 0.59 0.18 4 Bobbin Exam 515 .2 26 09S -0.72 0.11 4 Bobbin Exam
Attachment L-08-152 Page 27 of 44 All Wear Indications in SG 2-A bv DeDth (continued)
COUNT ROW TUBE SUPP INCH1 VOLTS Depth %TW Exam 516 150 13 10S 0.57 0.23 4 Bobbin Exam 517 151 16 10S -0.74 0.17 4 Bobbin Exam 518 93 64 11S 0.72 0.17 4 Bobbin Exam 519 91 70 10S -0.73 0.23 4 Bobbin Exam 520 93 63 11S 0.67 0.2 4 Bobbin Exam 521 149 29 10S -0.72 0.22 4 Bobbin Exam 522 104 93 07S -0.45 0.17 4 Special Interest 523 111 .4 11S 0.29 0.15 4 Bobbin Exam 524 5 46 13S -0.49 0.21 4 Bobbin Exam 525 5 41 13S -0.6 0.19 4 Bobbin Exam 526 90 129 13S -0.77 0.17 4 Bobbin Exam 527 91 65 05S -0.43 0.18 4 Bobbin Exam 528 91 70 11S -0.64 0.21 4 Bobbin Exam 529 81 128 13S -0.66 0.2 4 Bobbin Exam 530 107 117 09S -0.57 0.19 4 Bobbin Exam 531 87 74 11S 0.67 0.2 4 Bobbin Exam 532 22 1 12S 0.62 0.21 4 Bobbin Exam 533 59 1 07S 0.51 0.19 4 Bobbin Exam 534 55 1 12S 0.63 0.27 4 Bobbin Exam 535 122 102 10S -0.83 0.17 4 Bobbin Exam 536 9 62 13S 0.66 0.2 4 Bobbin Exam 537 48 14 05S -0.57 0.17 4 Bobbin Exam 538 42 66 06S -0.09 0.2 4 Bobbin Exam 539 139 3 10S 0.65 0.19 4 Bobbin Exam 540 61 80 05S 0.35 0.21 4 Bobbin Exam 541 40 36 07S 0.22 0.17 4 Bobbin Exam 542 48 23 05S 0.48 0.13 4 Bobbin Exam 543 127 16 07S -0.46 0.15 4 Bobbin Exam 544 136 2 10S -0.78 0.22 4 Bobbin Exam 545 134 6 10S 0.56 0.15 4 Bobbin Exam 546 134 5 10S -0.89 0.21 4 Bobbin Exam 547 33 108 13S -0.73 0.19 4 Bobbin Exam 548 133 3 10S -0.67 0.23 4 Bobbin Exam 549 133 2 05S -0.72 0.16 4 Bobbin Exam 550 138 11 13S -0.77 0.16 4 Bobbin Exam 551 73 46 03S -0.7 0.17 4 Bobbin Exam
Attachment L-08-152 Page 28 of 44 All Wear Indications in SG 2-A bv Deoth (continued)
COUNT ROW TUBE SUPP INCH1 VOLTS Depth %TW Exam 552 122 100 09S 0.63 0.15 4 Bobbin Exam 553 147 29 10S -0.72 0.21 4 Bobbin Exam 554 119 105 09S 0.6 0.19 4 Bobbin Exam 555 123 101 10S -0.8 0.19 4 Bobbin Exam 556 121 4 09S 0.52 0.21 4 Bobbin Exam 557 147 35 10S 0.64 0.19 4 Bobbin Exam 558 116 9 09S -0.24 0.16 4 Bobbin Exam 559 75 59 01S 0.73 0.18 4 Bobbin Exam 560 134 4 10S 0.71 0.12 3 Bobbin Exam 561 78 11 07S -0.72 0.12 3 Bobbin Exam 562 89 71 05S 0.47 0.14 3 Bobbin Exam 563 134 8 10S 0.61 0.13 3 Bobbin Exam 564 79 44 11S 0.4 0.1 3 Bobbin Exam 565 131 6 09S 0.67 0.11 3 Bobbin Exam 566 151 6 10S -0.38 0.15 3 Bobbin Exam 567 91 3 09S 0.29 0.13 3 Bobbin Exam 568 51 54 06S 0.39 0.18 3 Bobbin Exam 569 4 2 11S -0.72 0.17 3 Bobbin Exam 570 41 36 06S -0.44 0.12 3 Bobbin Exam 571 70 79 10S 0.63 0.14 3 Bobbin Exam 572 7 41 08S -0.41 0.15 3 Bobbin Exam 573 141 8 09S 0.04 0.16 3 Bobbin Exam 574 73 2 06S 0.67 0.15 3 Bobbin Exam 575 7 16 07S 0.7 0.17 3 Bobbin Exam 576 109 4 09S 0.43 0.12 3 Bobbin Exam 577 63 6 07S 0.35 0.16 3 Bobbin Exam 578 82 1 06S -0.79 0.15 3 Bobbin Exam 579 149 30 10S 0.62 0.15 3 Bobbin Exam 580 59 108 .06S 0.22 0.1 3 Bobbin Exam 581 87 62 06S -0.25 0.11 2 Bobbin Exam 582 38 17 07S -0.46 0.1 2 Bobbin Exam 583 56 8 07S 0.35 0.14 1 Bobbin Exam
Attachment L-08-1 52 Page 29 of 44 All Wear Indications in SG 1-B3 by Deoth COUNT ROW TUBE SUPP INCHI VOLTS Depth %TW Exam 1 67 1 12S -0.02 1.05 22 Bobbin Exam 2 151 13 14S -0.05 1.23 22 Special Interest 3 122 104 10S -0.56 0.71 19 Special Interest 4 108 57 06S 0.68 0.48 19 Special Interest 5 151 10 14S 0.06 0.49 17 Special Interest 6 151 9 14S 0.56 0.52 17 Special Interest 7 14 74 128 -0.24 0.64 17 Special Interest 8 73 9 128 0.63 0.58 17 Special Interest 9 133 86 lAS -0.73 0.46 16 Special Interest 10 142 1 14S 0.57 0.44 16 Special Interest 11 3 16 lOS 0.66 0.45 16 Special Interest 12 15 77 14S -0.56 0.67 16 Special Interest 13 141 67 14S 0.51 0.34 15 Special Interest 14 69 2 12S 0.32 0.6 15 Special Interest 15 6 50 133 0.64 0.44 15 Special Interest 16 72 2 12S -0.65 10.59 15 Special Interest 17 92 1 14S 0.65 0.35 14 Special Interest 18 141 68 14S 0.27 0.41 14 Special Interest 19 2 4 14S -0.63 0.53 14 Special Interest 20 151 16 14S -0.66 0.4 14 Special Interest 21 148 2 14S 0.03 0.37 14 Special Interest 22 70 2 12S 0.51 0.58 14 Special Interest 23 2 27 12S 0.73 0.61 14 Bobbin Exam 24 10 40 14S 0.62 0.49 13 Special Interest_
25 4 17 10S 0.6 0.35 13 Special Interest 26 60 128 los 0.51 0.44 13 Special Interest 27 113 1 09S 0.22 0.34 13 Special Interest 28 8 6 14S -0.64 0.49 13 Special Interest 29 3 14 10S 0.6 0.37 13 Special Interest 30 11 24 13S 0.64 0.62 13 Special Interest 31 129 93 1OS -0.66 0.48 13 Bobbin Exam 32 147 33 IDS 0.61 0.46 13 Special Interest 33 18 -84 13S 0.48 0.43 13 Special Interest 34 5 17 10S 0.62 0.49 13 Special Interest_
35 10 65 13S 0.59 0.46 13 Special Interest 36 72 10 10S 0.45 0.62 13 Special Interest 37 5 13 10S 0.68 0.36 13 Special Interest 38 128 94 lOS -0.54 0.48 13 Special Interest 39 61 125 10S 0.44 0.43. 12 Special Interest 40 13 2 12S 0.66 0.59 12 Special Interest 41 29 102 lOS 0.62 0.43 12 Special Interest 42 139, 7 lOS 0.63 0.6 12 Special Interest 43 132 6 105 0.75 0.57 12 Special Interest
Attachment L-08-1 52 Page 30 of 44 All Wear Indications in SG 1-B by Depth (continued)
COUNT ROW TUBE SUPP INCH 1 VOLTS Depth %TW Exam 44 73 8 123 0.68 0.4 12 Special Interest 45 126 98 10S -0.56 0.43 12 Special Interest 46 5 31 11S -0.72 0.32 12 Special Interest 47 14 74 11S 0.61 0.41 12 Special Interest 48 6 22 114S 0.57 0.47 12 Special Interest 49 150 27 14S -0.64 0.33 12 Special Interest 50 11 44 14S 0.56 10.44 12 Special Interest 51 123 102 10S -0.66 0.48 12 Bobbin Exam 52 24 91 09S 0.66 0.41 11 Special Interest 53 126 35 063 -0.75 0.3 11 Special Interest 54 22 5 09S 0.58 0.58 11 Bobbin Exam 55 10 56 14S -0.62 0.4 11 Special Interest 56 4 14 105 0.63 0.43 11 Special Interest 57 10 65 1.43 -0.64 0.41 .11 Special Interest 58 11 58 14S 0.68 0.57 11 Special Interest 59 20 79 09S 0.63 0.44 11 Special Interest 60 151 5 1.03 -0.73 0.28 11 Special Interest 61 73 12 12S 0.61 0.46 11 Bobbin Exam 62 91 45 06S 0.39 0.28 11 Special Interest 63 134 50 105 0.65 0.45 11 Bobbin Exam 64 151 5 12S 0.56 0.52 11 Special Interest 65 179 7 112S -0.59 10.37 11 Special Interest 66 28 100 10S- 0.59 0.39 11 Special Interest 67 2 27 14S -0.73 0.39 11 Special Interest 68 30 104 10S -0.69 0.37 11 Special Interest 69 115 114 07S -0.69 0.45 11 Bobbin Exam 70 71 2 13S -0.58 0.44 11 Special Interest 71 10 65 14S 0.6 0.39 11 Special Interest 72 69 3 12S 0.66 0.42 11 Special Interest 73 18 68 14S 0.63 0.38 10 Special Interest 74 16 78 14S 0.72 0.54 10 Special Interest 75 15 77 14S 0.73 0.4 10 Special Interest 76 17 81 10S 0.59 0.34 10 Special Interest 77 20 2 12S 0.67 0.48 10 Special Interest 78 100 45 063 0.52 0.4 10 Bobbin Exam 79 100 44 06S 0.17 0.24 10 Special Interest 80 15 76 13S 0.59 0.33 10 Special Interest 81 43 116 105 0.6 0.33 10 Special Interest 82 83 47 143 0.66 0.31 10 Special Interest 83 81 4 12S3 -0.57 0.23 10 Special Interest 84 53 126 12S -0.71 0.36 10 Special Interest 85 54 125 103 0.66 0.35 10 Special Interest 86 74 4 13S 0.58 0.4 10 Special Interest
Attachment L-08-1 52 Page 31 of 44 All Wear Indications in SG 1-13 by Der~th (continued)
COUNT ROW TUBE SUPP INCH I VOLTS Depth %TW Exam 87 73 4 13S -0.39 0.41 10 Special Interest 88 64 27 04S -0.7 0.49 10 Bobbin Exam 89 38 91 11S 0.'68 0.38 10 Special Interest 90 7 20 14S -0.59 0.38 10 Special Interest 91 145 42 14S 0.57 0.28 10 Special Interest 92 145 21 14S 0.57 0.25 10 Special Interest 93 5 14 1105_ 0.71 10.28 10 Special Interest-94 143 46 14S 0.63 0.27 10 Special Interest 95 141 68 14S -0.71 0.28 10 Special Interest 96 5 12 10S 0.68 0.26 10 special Interest 97 150 13 10S -0.75 0.26 10 Special Interest 98 5 18 10S 0.62 0.27 10 Special Interest 99 138 75 10S -0.75 0.36 10 Special Interest 100 2 2 14S -0.63 0.4 10 Special Interest 101 9 52 13S 0.57 0.33 10 Special Interest 102 123 104 14S -0.65 0.25 10 Special Interest 103 13 46 14S 0.53 0.35 10 Special Interest 104 1 5 14S -0.63 0.4 10 Special Interest 105 79 4 12S -0.6 0.31 9 Bobbin Exam 106 138 6 10S 0.63 0.41 9 Special Interest 107 13 52 14S 0.63 0.44 9 Special Interest 108 44 117 10S 0.69 0.29 9 Special Interest 109 149 32 12S 0.32 0.31 9 Special Interest 110 141 47 14S 0.56 0.25 9 Special Interest 111 114 56 07S 0.37 0.41 9 Bobbin Exam 112 6 39 09S 0.64 0.34 9 Bobbin Exam 113 6 13 105 0.62 0.24 9 Special Interest 114 54 1 14S -0.6 0.39 9 Special Interest 115 68 2 12S 0.55 0.33 9 Special Interest 116 13 58 14S 0.6 0.45 9 Special Interest 117 15 2 12S 0.55 0.43 9 Special Interest 118 5 44 13S 0.65 0.23 9 Special Interest 119 15 55 14S 0.66 0.45 9 Special Interest 120 147 20 10S -0.66 0.44 9 Special Interest 121 60 127 09S 0.68 0.36 9 Bobbin Exam 122. 54 1 11S -0.68 0.44 9 Special Interest 123 3 3 14S 0.66 0.33 9 Special Interest 124 151 12 12S 0.68 0.29 9 Special Interest 125 20 2 13S 0.59 0.41 9 Special Interest 126 20 79 09S -0.81 0.44 9 Bobbin Exam 127 19 1 12S 0.63 0.4 9 Special Interest 128 1 6 14S -0.78 0.34 9 Bobbin Exam 129 23 80 14S 0.52 0.34 9 Specia[,Interest
Attachment L-08-1 52 Page 32 of 44 All1 Wear Indications in SG 1-B by Depth (continued)
COUNT ROW TUBE SUPP INCHi VOLTS Depth %TW Exam 130 63 126 09S 0.74 0.38 9 Bobbin Exam 131 86 103 04S -0.74 0.33 9 Special Interest 132 26 80 14S 0.7 0.46 9 Special Interest 133 129 93 11S -0.63 0.24 9 Special Interest 134 27 97 09S 0.64 0.43 9 Bobbin Exam 135 28 96 09S 0.63 0.44 9 Bobbin Exam 136 7 35 11S -0.74 0.35 9 Bobbin Exam 137 83 4 lOS 0.6 0.19 9 Special Interest 138 18 79 09S 0.58 0.39 9 Bobbin Exam 139 6 49 14S 0.7 0.31 9 Special Interest 140 5 16 10S 0.62 0.22 8 Special Interest 141 62 1 114S '0.37 0.27 8 Bobbin Exam 142 3 4 14S 0.67 0.31 8 Special Interest 143 62 1 14S -0.57 0.31 8 Special Interest 144 62 128 10S 0.7 0.26 8 Special Interest 145 36 5 lOS 0.44 0.39 8 Special Interest 146 60 113 03S -0.77 0.35 8 Bobbin Exam 147 10 65 11S -0.14 0.26 8 Special Interest 148 9 54 14S 0.64 0.28 8 Special Interest 149 9 43 12S -0.69 0.32 8 Bobbin Exam 150 9 41 14S 0.6 0.29 8 Special Interest 151 6 19 10S 0.67 0.2 8 Special Interest 152 7 46 14S -0.69 0.29 8 Special Interest 153 58 1 12S 0.58 0.35 8 Special Interest 154 37 7 09S 0.78 0.29 8 Bobbin Exam 155 15 67 093 0.64 0.32 8 Special Interest 156 6 23 148 0.65 0.29 8 Special Interest 157 45 118 10S 0.52 0.28 8 Special Interest 158 52 89 05S -0.77 0.35 8 Bobbin Exam 159 56 122 09S 0.5 0.37 8 Bobbin Exam 160 9 30 14S 0.62 0.27 8 Special Interest 161 134 84 12S 0.54 0.28 8 Special Interest 162 126 98 10S 0.64 0.25 8 Bobbin Exam 163 148 22 09S -0.53 0.34 8 Bobbin Exam 164 124 100 10S -0.64 0.28 8 Special Interest 165 135 79 06S 0.51 0.25 8 Bobbin Exam 166 100 44 06S -0.56 0.18 8 Special Interest 167 141 2 12S -0.69 0.27 8 Bobbin Exam 168 141 1 123 -0.77 0.33 8 Bobbin Exam 169 123 100 10S 0.67 0.25 8 Special Interest 170 106 65 06S 0.19 0.33 8 Bobbin Exam 171 140 2 12S -0.66 0.37 8 Special Interest 172 150 120 loS 0.67 0.28 8 Special Interest
Attachment L-08-152 Page 33 of 44 All Wear Indications in SG 1-B bv DeDth (continued)
COUNT ROW TUBE SUPP INCH1 VOLTS Depth %TW Exam 173 149 28 11S -0.16 0.25 8 Special Interest 174 151 14 10S 0.67 0.33 8 Bobbin Exam 175 135 54 03S 0.46 0.32 8 Bobbin Exam 176 117 1 09S 0.55 0.34 8 Bobbin Exam 177 69 66 09S 0.65 0.35 8 Bobbin Exam 178 149 33 12S 0.36 0.28 8 Special Interest 179 70 6 12S 0.68 0.38 8 Special Interest 180 109 69 06S 0.46 0.34 8 Bobbin Exam 181 151 7 12S 0.65 0.19 8 Special Interest 182 112 71 03S -0.81 0.26 8 Bobbin Exam' 183 137 5 09S -0.76 0.3 8 Bobbin Exam 184 73 9 12S -0.59 0.26 8 Special Interest 185 134 78 10S 0.63 0.22 7 Special Interest 186 28 99 09S 0.7 0.29 7 Bobbin Exam 187 131 89 12S -0.37 0.22 7 Bobbin Exam 188 10 24 09S -0.74 0.32 7 Bobbin Exam 189 131 6 10S -0.66 0.32 7 Special Interest 190 7 50 11S -0.74 0.23 7 Special Interest 191 8 48 11S -0.69 0.28 7 Bobbin Exam 192 104 121 03S -0.76 0.24 7 Bobbin Exam 193 119 105 10S 0.64 0.23 7 Special Interest 194 121 90 07S 0.58 0.27 7 Bobbin Exam 195 121 105 10S -0.59 0.22 7 Special Interest 196 18 47 11S -0.85 0.31 7 Bobbin Exam 197 14 73 1lS 0.3 0.25 7 Special Interest 198 13 74 09S -0.81 0.32 7 Bobbin Exam 199 20 84 11S -0.48 0.23 7 Special Interest 200 123 86 03S 0.61 0.26 7 Bobbin Exam 201 129 94 10S -0.7 0.25 7 Special Interest 202 104 70 06S 0.54 0.26 7 Bobbin Exam 203 103 113 07S 0.52 0.24 7 Bobbin Exam 204 7 21 14S 0.63 0.28 7 Special Interest 205 124 98 10S 0.69 0.23 7 Special Interest 206 11 56 14S 0.61 0.25 7 Special Interest 207 11 48 08S 0.64 0.34 7 Bobbin Exam 208 101 124 12S -0.63 0.25 7 Special Interest 209 19 62 14S 0.67 0.34 7 Special Interest 210 61 121 09S 0.68 0.34 7 Bobbin Exam 211 3 12 10S 0.57 0.31 7 Special Interest 212 150 23 12S 0.6 0.28 7 Bobbin Exam 213 79 3 12S -0.6 0.23 7 Bobbin Exam 214 80 6 09S 0.48 0.24 7 Bobbin Exam 215 3 17 10S 0.65 0.24 7 Special Interest
Attachment L-08-152 Page 34 of 44 All Wear Indications in SG 1-B by Depth (continued)
COUNT ROW, TUBE SUPP INCH1 VOLTS Depth%TW Exam 216 4 16 10S 0.55 0.18 7 Special Interest 217 7 43 11S -0.71 .0.26 7 Bobbin Exam 218 31 94 08S 0.55 0.25 7 Special Interest 219 4 39 12S -0.56 0.27 7 Bobbin Exam 220 149 17 10S 0.61 0.22 7 Special Interest 221 77 43 04S -0.58 0.35 7 Bobbin Exam 222 73 61 12S. 0.7 0.27 7 Special Interest 223 4 30 09S 0.59 0.23 7 Special Interest 224 2 1 13S 0.65 0.26 7 Special Interest 225 135 82 12S 0.72 0.26 7 Bobbin Exam 226 69 60 04S 0.52 0.23 7 Bobbin Exam 227 140 1 12S -0.69 0.31 7 Special Interest 228 6 37 08S 0.67 0.24 7 . Special Interest 229 148 39 12S 0.61 0.22 7 Special Interest 230 146 21 14S -0.75 0.17 7 Special Interest 231 44 18 07S -0.54 0.28 7 Bobbin Exam 232 61 124 10S 0.7 0.26 7 Special Interest 233 81 126 09S -0.8 0.22 7 Bobbin Exam 234 .121 105 10S 0.69 0.19 6 Special Interest 235 150 27 11S -0.28 0.2 6 Special Interest 236 123 82 06S 0.61 0.15 6 Special Interest 237 1 6 13S 0.47 0.2 6 Special Interest 238 1 5 13S 0.33 0.15 6 Special Interest 239 13 57 11S -0.77 0.29 6 Bobbin Exam 240 149 30 10S 0.69 0.19 6 Special Interest 241 11 58 06S 0.64 0.28 6 Bobbin Exam 242 5 15 10S 0.53 0,15 6 Special Interest 243 127 49 09S -0.79 0.24 6 Bobbin Exam 244 127 77 10S -0.76 0,21 6 Bobbin Exam 245 10 63 09S 0 0.27 6 Bobbin Exam 246 129 94 11S -0.64 0.22 6 Special Interest 247 147 25 09S -0.76 0.19 6 Bobbin Exam 248 6 17 10S 0.71 0.14 6 Special Interest 249 7 10 10S 0.63 0.15 6 Special Interest 250 7 20 14S 0.66 0.24 6 Special Interest 251 116 111 10S -0.65 0.21 6 Special Interest 252 149 19 09S -0.76 0.21 -6 Bobbin Exam 253 19 62 14S 0.56 0.21 6 Special Interest 254 26 14 12S -0.75 0.29 6 Bobbin Exam 255 22 88 09S 0.56 0.28 6 Bobbin Exam 256 97 31 07S -0.58 0.23 6 Bobbin Exam 257 94 1 08S -0.54 0.23 6 BobbinExam 258 21 89 10S -0.75 0.18 6 Special Interest
Attachment L-08-152 Page 35 of 44 All Wear Indications in SG 1-B by Derth (continued)
COUNT ROW TUBE SUPP INCH1 VOLTS Depth %TW Exam 259 21 68 14S 0.54 0.2 6 Special Interest 260 34 4 10S 0.55 0.26 6 Bobbin Exam 261 41 108 09S -0.33 0.32 6 Bobbin Exam 262 33 108 09S 0.25 0.3 6 Bobbin Exam 263 111 6 06S 0.55 0.18 6 Bobbin Exam 264 48 121 08S -0.53 0.25 6 Bobbin Exam 265 1 3 08S 0.6 0.24 6 Bobbin Exam 266 3 31 12S 0.68 0.23 5 Bobbin Exam 267 151 14 11S -0.71 0.17 5 Special Interest 268 9 60 09S 0.25 0.24 5 Bobbin Exam 269 28 94 08S 0.22 0.23 5 Bobbin Exam 270 99 94 06S -0.63 0.18 5 Bobbin Exam 271 71 28 11S 0.51 0.26 5 Bobbin Exam 272 150 26 11S -0.19 0.19 5 Special Interest 273 31 104 09S 0.72 0.21 5 Bobbin Exam 274 57 2 0SS -0.84 0.16 5 Bobbin Exam 275 41 114 05S -0.77 0.26 5 Bobbin Exam 276 115 113 10S -0.76 0.16 5 Bobbin Exam 277 4 34 09S 0.62 0.18 5 Bobbin Exam 278 91 13 07S -0.52 0.19 5 Bobbin Exam 279 39 4 09S 0.67 0.17 5 Bobbin Exam 280 10 42 14S 0.58 0.18 5 Special Interest 281 80 36 12S -0.59 0.24 5 Bobbin Exam 282 50 122 09S 0.67 0.2 5 Bobbin Exam 283 84 57 06S -0.59 0.24 5 Bobbin Exam 284 148 41 11S -0.06 0.17 5 Special Interest 285 148 41 11S 0.34 0.16 5 Special Interest 286 149 28 12S 0.69 0.15 5 Special Interest 287 20 41 09S -0.84 0.23 5 Bobbin Exam 288 11 55 11S -0.65 0.15 5 Special Interest 289 103 46 06S 0.61 0.2 5 Bobbin Exam 290 125 99 10S -0.67 0.17 5 Special Interest 291 15 67 09S -0.6 0.19 5 Special Interest 292 17 79 09S -0.48 0.23 5 Bobbin Exam 293 21 28 08S 0.4 0.22 5 Bobbin Exam 294 19 83 09S 0.56 0.24 5 Bobbin Exam 295 18 80 09S 0.59 0.26 5 Bobbin Exam 296 128 95 11S -0.63 0.16 5 Special Interest 297 24 92 09S -0.73 0.24 5 Bobbin Exam 298 103 46 06S -0.45 0.2 5 Bobbin Exam 299 5 9 08S 0.65 0.2 4 Bobbin Exam 300 45 81 06S 0.59 0.19 4 Bobbin Exam 301 113 9 08S 0.74 0.19 4 Bobbin Exam C
Attachment L-08-1 52 Page 36 of 44 All Wear Indications in SG 1-13 bv Dei~th (continued)
COUNT ROW TUBE SUPP INCHi VOLTS Depth %TW Exam 302 18 4 09S 0.58 0.24 4 Bobbin Exam 303 114 4 09S 0.74 0.18 4 Bobbin Exam 304 52 120 07S -0.44 0.16 4 Bobbin Exam 305 46 114 08S 0.57 0.16 4 Bobbin Exam 306 121 41 043 0.44 0.16 4 Bobbin Exam 307 31 98 07S -0.8 0.17 4 Bobbin Exam 308 77 68 033 -0.11 0.13 4 Bobbin Exam 309 42 106 083 0.55 0.2 4 Bobbin Exam 310 17 79 093 0.56 0.17 4 Bobbin Exam 311 75 39 04S -0.78 0.17 4 Bobbin Exam 312 70 37 063 0.38 0.17 4 Bobbin Exam 313 70 22 123 0.53 0.16 4 Bobbin Exam 314 70 14 12S 0.24 0.19 4 Bobbin Exam 315 68 3 15S -0.75 0.22 4 Bobbin Exam 316 67 118 05S -0.73 0.15 4 Bobbin Exam 317 67 48 033 0.62 0.18 4 Bobbin Exam 318 54 116 033 0.66 0.16 4 Bobbin Exam ,2 319 136 44 073 0.39 0.14 4 Bobbin Exam 320 130 74 053 -0.09 0.1*6 4 Bobbin Exam 321 27 96 09S 0.56 0.17 4 Bobbin Exam 322 123 78 1083 0.48 0.18 4 Bobbin Exam 323 22 91 093 -0.37 0.19 4 Bobbin Exam 324 17 77 063 0.61 0.17 4 Bobbin Exam 325 19 15 083 0.42 0.19 4 Bobbin Exam 326 12 50 083 0.59 0.21 4 Bobbin Exam 327 42 112 093 -0.6 0.23 4 Bobbin Exam 328 90 6 10S 0.53 0.16 4 Special Interest 329 88 3 093 0.56 0.19 4 Bobbin Exam 330 40 115 093 -0.11 0.22 4 Bobbin Exam 331 145 30 033 0.69 0.13 4, Bobbin Exam 332 120 84 093 0.29 0.18 4 Bobbin Exam 333 81 65 113 0.38 0.12 3 Bobbin Exam 334 129 9 063 0.72 0.11 3 Bobbin Exam 335 100 53 063 -0.22 0.15 3 Bobbin Exam 336 45 30 063 -0.7 0.13 3 Bobbin Exam 337 27 90 083 0.36 0.16 3 Bobbin Exam 338 14 9 013 -0.31 0.15 3 Bobbin Exam 339 142 56 033 0.37 0.1 3 Bobbin Exam 340 80 28 113 -0.84 0.15 3 Bobbin Exam 341 99 42 063 -0.28 0.18 3 Bobbin Exam 342 15 76 093 -0.26 0.15 3 Bobbin Exam 343 140 7 033 0.07 0.13 3 Bobbin Exam 344 122 6 083 -0.35 0.16 1 3 Bobbin Exam
Attachment L-08-152 Page 37 of 44 All Wear Indications in SG 1-B bv Denth (continued)
COUNT ROW TUBE SUPP INCH1 VOLTS Depth %TW Exam 345 39 108 09S -0.18 0.12 3 Bobbin Exam 346 57 113 08S -0.46 0.12 3 Bobbin Exam 347 12 11 04S 0.26 0.12 2 Bobbin Exam 348 41 112 09S 0.6 0.11 2 Bobbin Exam
Attachment L-08-152 Page 38 of 44 Section 5 Response to Technical Specification 6.9.1.12.e, Number of Tubes Plugged or Repaired During the Inspection Outage for Each Active Degradation Mechanism Degradation Mechanism Steam Generator SG 2-A SG 1-B Upper Tube End Axial PWSCC 61 19 Upper Tube End Circumferential PWSCC Freespan Volumetric Degradation Adjacent to TSPs Upper, Lower and Tube Support Crevice Volumetric.
Wear at Tube Supports 0 0 Freespan Axial ODSCC / IGA at Upper Bundle Denting from 0 0 Auxiliary Feedwater Stabilization Axial ODSCC / IGA (Groove 10 17 1GA)
Upper Roll Transition PWSCC 3 2 Lower Tube End and Lower Tube End Expansion Transition 0 1 PWSCC Upper Tube End Plastic Deformation from Loose Part 1 0 Impact Tube End Plastic Deformation 0 2 from Robot Anchor Pin Significant Change in OPB Indication Located Above a 2 0 Repair Roll Some of the tubes repaired during the DBNPS 15RFO contained multiple degradation mechanisms and thus are counted more than once. In SG 2-A, tube A-66-1 had Freespan Axial ODSCC / IGA (groove IGA) and Freespan Volumetric degradation adjacent to TSPs. Tube A-i 04-107 contained' an Upper Roll
Attachment L-08-152 Page 39 of 44 Transition Axial PWSCC and an Upper Tube End Axial PWSCC. In SG 1-B, tube B-88-1 had Freespan Axial ODSCC / IGA (groove IGA) and Freespan Volumetric degradation adjacent to TSPs. Tube B-1 08-117 had an Upper Tube End Axial PWSCC and groove IGA. Finally, tube B-87-60 had anchor pin deformation and some Inside Diameter (ID) volumetric degradation associated with the plastic deformation near the tube end. Each of these five tubes had two associated degradation mechanisms reported.
Attachment L-08-152 Page 40 of 44 Section 6 Response to Technical Specification 6.9.1.12.f, Total Number and Percentage of Tubes Plugged or Repaired to Date Steam Total Percentage Number Percent Generator Plugged Plugged Rerolled in Rerolled in Service Service 2-A 625 4.0 131 0.85 1-B 279 1.8 31 0.20
Attachment L-08-152 Page 41 of 44 Section 7 Response to Technical Specification 6.9.1.12.g, The Results of Condition Monitoring, Including the Results of Tube Pulls and In-situ Testing The following table provides the DBNPS 15RFO Condition Monitoring Leakage Integrity Summary.
15RFO Leakage Integrity Summary Degradation Mechanism SG 2-A SG 1-B (gpm @ Room (gpm @ Room Temperature) Temperature)
Freespan ODSCC / IGA 0 0 Wear at Supports 0 0 Upper Tube End Axial 0.00073 0.00038 PWSCC Upper Tube End Circ 0 0 PWSCC Axial PWSCC at Lower 0 0 Tubesheet Circ PWSCC at Lower 0 0 Tubesheet ID Vol IGA at Lower 0 0 Tubesheet Volumetric IGA in Freespan 0 0 Axial UTS PWSCC at Roll 0 0 Transition ID UTS Vol IGA at Roll 0.00054 0.00000 Transition In Service Repair Re-rolls, 0.01618 0.00797 Rolled Total 0.01745 0.00835 No tube pulls were required or performed during 15RFO.
Based on eddy current inspection results and analysis, no tubing defects were large enough to meet the in-situ pressure testing screening criteria threshold as defined in the DBNPS 15RFO In-Situ Selection document. The SG primary to
Attachment L-08-152 Page 42 of 44 secondary operational leakage at the start of 15RFO was at or below the detection threshold of approximately 0.02 gpd.
Therefore, based on the results of the 15RFO examination, both SG 2-A and SG 1-B meet the leakage and structural margins prescribed in the steam generator performance criteria.
Attachment L-08-152 Page 43 of 44 Section 8 Response to Technical Specification 6.9.1.12.h, The Effective Plugging Percentage for All Plugging and Tube Repairs in Each SG During the DBNPS 15RFO, tubes that had to be removed from service were removed by plugging and in most cases, stabilization. In some cases, upper tube end or original roll expansion indications could be left in service after performing a repair roll expansion to create a new pressure boundary below the indication. The repair roll process does not remove heat transfer surface area or increase the primary flow resistance.
The process of plugging removes .heat transfer area from service and increases primary flow resistance of the steam generator. Sleeving increases the primary flow resistance of the steam generator, but has minimal impact on the heat transfer area or efficiency. The 199 installed sleeves in SG 2-A are equivalent to 30 plugged tubes (with respect to primary flow resistance), and the 212 installed sleeves in SG 1-B are equivalent to 32 plugged tubes (with respect to primary flow resistance). The plugging equivalency for SG 2-A is 655 tubes (4.2%) and for SG 1-B is 311 tubes (2.0%).
A review was performed and verified that the plugging increase was within the analyzed design margins. Therefore, the removal of the heat transfer area and increased flow resistance is within the limits for the total number of tubes allowed to be removed from service (plug equivalents) and does not affect the steam generator's compliance with the design performance requirements.
Attachment L-08-152 Page 44 of 44 Section 9 Response to Technical Specification 6.9.1.12.i, Repair Method Utilized and the Number of Tubes Repaired by Each Repair Method There were 39 repair rolls installed in the SG 2-A upper tubesheet and 13 repair rolls installed in the SG 1-B upper tubesheet during the DBNPS 15RFO. The repairs were made in accordance with the DBNPS Technical Specifications, which endorses Framatome Technologies Inc. Topical Report BAW-2303, "OTSG Repair Roll Qualification Report," Revision 4.
Tubes removed from service were plugged using rolled plugs and stabilized as required by predefined stabilization criteria. There were 46 tubes plugged in SG 2-A and 35 tubes plugged in SG 1-B during the DBNPS 15RFO.