ML042710277

Report of Inservice Inspection of Steam Generator Tubes, Cycle 13 Additional Information

ML042710277
Person / Time
Site:	San Onofre
Issue date:	09/23/2004
From:	Scherer A Southern California Edison Co
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
Download: ML042710277 (16)

Text

SOUTHERN CALIFORNIA A. Edward Scherer AnEDISON I Manager of Nuclear Regulatory Affairs An EDISON N1%TERNVATIONAL~t Company September 23, 2004 U. S. Nuclear Regulatory Commission Document Control Desk Washington, D. C. 20555

Subject:

Docket No. 50-361 Report Of Inservice Inspection Of Steam Generator Tubes, Cycle 13 Additional Information San Onofre Nuclear Generating Station, Unit 2

Reference:

Letter from D. E. Nunn (SCE) to Document Control Desk dated March 17, 2004,

Subject:

Special Report: Inservice Inspection of Steam Generator Tubes, Cycle 13 Gentlemen:

By the referenced letter, Southern Califomia Edison (SCE) submitted the reports required by Technical Specification 5.7.2.c of the inservice inspection of steam generator tubes at San Onofre Nuclear Generating Station Unit 2. Subsequently, NRC staff requested certain additional clarifying information. The requested information is provided in the enclosure.

SCE is making no new commitments in this submittal.

If you have any questions or would like additional information concerning this subject, please contact Mr. Jack Rainsberry at (949) 368-7420.

Sincerely, Enclosure cc: B. S. Mallett, Regional Administrator, NRC Region IV B. M. Pham, NRC Project Manager, San Onofre Units 2, and 3 C. C. Osterholtz, NRC Senior Resident Inspector, San Onofre Units 2 & 3 P.O. Box 128 San Clemente, CA 92674-0128 949-368-7501 pco4'7 Fax 949-368-7575

San Onofre Unit 2 Cycle 13 Tube Inspection Report Request for Additional Information The results of the 2004 San Onofre Unit 2 steam generator tube inspections were reported to the NRC in a letter dated March 17, 2004 (ML040850599).

In order for the staff to complete its review, the following information is requested:

1. Please confirm that the planned inspection scope listed in Table 1 of the report was the actual scope.

Southern California Edison (SCE) Response: The inspection scope in Table 1 was planned and completed.

2. What inspections were performed to detect loose parts? Discuss any loose parts found, the source of the loose parts, the effect the parts had on any tubes, and whether the parts were removed. For any part not removed, please discuss the assessments performed to ensure the part would not adversely affect tube integrity.

SCE Response:

Eddy current inspections specifically intended to detect loose parts are described in rows 1, 2, and 3 in Table 1 of SCE's March 17, 2004 letter. The row 3 first column description can be enhanced by adding the words, "including all inservice tubes on the periphery of the tube bundle and the blowdown lane." No loose parts were found during eddy current inspections.

Foreign Object Search and Retrieval (FOSAR) was performed on the secondary side of both steam generators. This remote visual inspection was performed at the top-of-tubesheet on the periphery of the tube bundle and the blowdown lane.

Additionally, direct visual inspections for objects used in conjunction with work in all areas of the steam generator are performed to the requirements of the site's Foreign Materials Exclusion Program.

FOSAR Results for Steam Generator E-088:

One metallic object was found and removed from Steam Generator E-088. Dimensions were approximately 2.5 inches by 3 inches with thickness at the middle being in the range of 1/16 inch to 1/8 inch, with edges apparently eroded thinner.

1

San Onofre Unit 2 Cycle 13 Tube Inspection Report Request for Additional Information The object was evaluated for potential sources. The results of this evaluation were not conclusive. The object was verified to be small enough to fit through the feed ring discharge elbows. Accordingly, source evaluation was coordinated with both steam generator engineers and engineers that work with systems in the secondary side fluid flow path, upstream of the steam generator. Review of plant experience and the object provided insufficient evidence to correlate it to a component or a maintenance activity.

The object had no effect on the tubes. The eddy current inspections did not indicate evidence of tube degradation that corresponded to this object. Further, the object was not readily movable in its location between the blowdown ring and the cold leg top of the tubesheet, and was not touching any tubes.

This part found in the FOSAR was removed.

FOSAR Results for Steam Generator E-089:

Four small pieces of tape were found and removed. Their source was determined to be work this outage in the upper portion of the steam generator. This finding was reported and dispositioned in the site corrective action process. This provided Foreign Material Exclusion Program feedback and trending. There was no effect on tubes because these pieces were flexible tape and were removed in a timely manner.

These parts found in the FOSAR were removed.

Foreign Object in Steam Generator E-089 during plant heatup:

Elevated chloride levels were noted by routine chemistry monitoring during plant heatup and suggested a foreign object in the secondary-side of Steam Generator E-089. The chloride concentration peak was approximately 1 part per million (ppm). The chloride level was reduced using the normal chemical contaminant cleanup procedures and available industry guidance from the Electric Power Research Institute (EPRI).

Prior to returning the unit to service, the plant returned to Mode 5 for another reason.

On this occasion the secondary side of the steam generator was re-opened and inspected for possible foreign objects. The apparent source was an approximately 25 foot long section of "elephant trunk" flexible hose. Hose of this type is comprised of a wire spring, and is covered with a polyvinyl chloride covering. The apparent source was consistent with the chloride concentration experience. The hose had been used as a 2

San Onofre Unit 2 Cycle 13 Tube Inspection Report Request for Additional Information foreign materials barrier during the outage work, and was not removed upon work completion. Items used during steam generator maintenance are controlled by the site Foreign Material Exclusion Program. This event was dispositioned under the site corrective action program.

The residue of the hose was removed from the steam generator.

3. During conference calls with the staff in March 2004 (ML040910379), the licensee described how the number and depth of indications varied with distance below the top of the tubesheet. For each steam generator, as a function of distance below the top of the tubesheet, please provide the number of indications of each type (i.e. axial/circumferential, outside diameter/inside diameter) and an estimate of the size (length, depth).

Please use several depth intervals, including 5" and 17" below the TTS as two of the boundaries between depth intervals, since these were the lower limits of the rotating probe inspections in 2002 and 2004, respectively.

SCE Response: Appendices 1 through 4 provide the requested information in the requested format. The vast majority of this information was previously provided in Appendices 3 and 4 of SCE's March 17, 2004 letter.

Appendices 1 and 3 are an extraction and re-arrangement of that information, with the addition of some size measurements. Appendices 2 and 4 are graphic aids for Appendices 1 and 3 respectively.

The size measurements that are provided are those that may have relevance, consistent with EPRI guidance. EPRI provides guidance on indication voltage thresholds for which sizing measurements are relevant for tubing integrity purposes.

This guidance is in EPRI's "Steam Generator In Situ Pressure Test Guidelines, Revision 2", Report Number 1007904, dated August 2003.

4. At the time of the March 17, 2004, conference call with the staff (ML040910379) regarding reduced sleeve diameters, the licensee was investigating whether a technique can be qualified for detecting defects behind the nickel and microlok bands. The licensee was also investigating the need to revise the topical report to address inspection of the region where the lower joint would be established and to address the implications 3

San Onofre Unit 2 Cycle 13 Tube Inspection Report Request for Additional Information of having flaws behind the nickel and microlok bands. Please provide a status update on these investigations.

SCE Response:

The issue of tube inspectability behind the metal bands of installed sleeves was raised during the discussion of the reduced sleeve diameters at San Onofre. Westinghouse assessed current ECT technique capabilities in a calibration standard with axial notches in the parent tubing behind the sleeve's nickel and microlok bands. These notches were 50%, 70% and 100% throughwall. The three notches behind the microlok band and the 100% notch behind the nickel band were identified during the analysis of the calibration standard data using current ECT techniques.

Westinghouse developed a draft position paper regarding the structural integrity of the rolled joint utilizing this information This discusses the efficacy of a less rigorous inspection regime behind the bands. This was discussed with the NRC Staff in a telephone conference call on August 3, 2004. Westinghouse provided technical discussion during the call, and SCE, as an interested utility, was a listening participant.

Review of this draft position paper is ongoing. Test programs are being developed in the case that review indicates further needs.

Westinghouse is developing a test program to increase understanding of the rolled joint strength and leakage characteristics. This program would include the testing of reduced length rolled joints to determine their structural capability. These tests would take no credit for the nickel band area of the joint.

Additionally, Westinghouse is developing a test program that would include critical sized notches behind the two bands and determine detectability of these notches. The program would utilize a Ghent-style ECT probe. The results of this program, if successful in detecting flaws, would be issued as an addendum to the ECT technique qualification report.

It is not expected that resolution of inspection at the nickel band will require a revision to the currently approved sleeving topical report (CEN-633-P, Rev. 02).

5. Please discuss the results of the rotating probe examinations of dents and scallop bar support regions. Describe any degradation found in these exams and identify those flaws that were also detected with bobbin probes.

SCE Response:

4

San Onofre Unit 2 Cycle 13 Tube Inspection Report Request for Additional Information Scallop Bar Support Regions: The results of this rotating probe examination were that no indications were found.

Dents: Steam Generator E-089 results of this rotating probe examination were that no indications were found. Steam Generator E-088 results of this rotating probe examination (including bobbin probe detection correlation) are provided in Table 1. All rotating probe indications originated from the inside diameter of the tubing, and were classified as Single Axial Indications (SAI). Two indications in tube number Row 54 Column 94 were in the same vicinity, and thus conservatively considered during sizing and integrity evaluation to be one composite indication. Bobbin probe examination results for the larger dents are shown in Table 1 as "not applicable (NA)", because of the interfering geometry variable limitations of that technique.

5

San Onofre Unit 2 Cycle 13 Tube Inspection Report Request for Additional Information Table 1 Results of the Rotating Probe Examinations of Dents, and Associated Bobbin Probe Results in Steam Generator E-088 Indication Location Rotating Probe Bobbin Probe Tube Detection Tube Tube Support and Volts Depth Length of Dent Row Column Inches from (%) (inches) Indication (Volts) its Center (Volts) 14 56 05H +0.71 1.02 39 0.18 1.14 3.05 22 114 06H +0.61 1.22 37 0.17 NA 24.64 29 113 04H +0.01 0.67 30 0.34 NA 10.81 54 94 06H +0.50 0.70 A-54 94 06H +0.69 0.83 s 0.43 N.A 5.65 76 62 08H -0.02 0.46 NA NA 0.42 3.92 6

San Onofre Unit 2 Cycle 13 Tube Inspection Report Request for Additional Information Appendix 1 - San Onofre Unit 2 Steam Generator E-088 Avinl anel Pircoomforantial Inrdicrtionn At nr ReInw The Tnn-nf-TiihPcheet Location Circ Aal Relative To Depth Length OD? Yes or Outage SG Row Col Ind Elevation Volts Degrees Top-of- (%) (de- Length OD? if o

____________Tubesheet arees) (inches)BlnifN 2004 SG88 48 56 SAI TSH 0.00 0.24 104 0.00 Yes 2004 SG88 56 72 SCI TSH 0.00 0.13 114 0.00 Yes 2004 SG88 60 116 MCI TSH 0.00 0.47 29 0.00 2004 SG88 80 86 SCI TSH -0.02 0.49 22 -0.02 2004 SG88 20 62 SCI TSH -0.02 0.19 57 -0.02 Yes 2004 SG88 69 101 SCI TSH -0.02 0.37 22 -0.02 2004 SG88 25 41 MCI TSH -0.03 0.19 121 -0.03 Yes 2004 SG88 35 149 SCI TSH -0.03 0.29 122 -0.03 Yes 2004 SG88 70 108 SCI TSH -0.04 0.64 27 -0.04 69 20 2004 SG88 78 80 SCI TSH -0.06 0.63 26 -0.06 57 32 2004 SG88 30 118 SCI TSH -0.07 0.46 15 -0.07 2004 SG88 16 56 SCI TSH -0.07 0.25 24 -0.07 2004 SG88 27 127 SCI TSH -0.07 0.54 66 -0.07 67 27 Yes 2004 SG88 82 114 SCI TSH -0.08 0.56 19 -0.08 47 27 2004 SG88 67 103 SCI TSH -0.08 0.21 23 -0.08 _

2004 SG88 91 97 SCI TSH -0.08 0.69 23 -0.08 57 27 2004 SG88 82 104 SCI TSH -0.09 0.33 36 -0.09 2004 SG88 42 112 SAI TSH -0.09 0.57 13 -0.09 35 0.11 2004 SG88 57 119 MCI TSH -0.09 0.43 23 -0.09 2004 SG88 89 99 MCI TSH -0.10 0.70 23 -0.10 61 51 2004 SG88 80 104 SC TSH -0.10 0.28 20 -0.10 2004 SG88 23 35 SCI TSH -0.11 0.58 24 -0.11 38 32 2004 SG88 99 75 SCI TSH -0.11 0.76 24 -0.11 58 32 2004 SG88 46 114 SCI TSH -0.11 0.46 18 -0.11 2004 SG88 83 63 SCI TSH -0.12 0.49 22 -0.12 2004 SG88 50 112 SCI TSH -0.13 0.26 17 -0.13 2004 SG88 13 119 SCI TSH -0.13 0.33 22 -0.131 2004 SG88 38 36 SCI TSH -0.13 0.39 21 -0.13 2004 SG88 13 121 SCI TSH -0.13 0.33 21 -0.13 _

2004 SG88 60 126 MCI TSH -0.13 0.40 20 -0.13 2004 SG88 43 113 SCI TSH -0.13 0.47 33 -0.13 _

2004 SG88 78 68 SCI TSH -0.14 0.42 18 -0.14 2004 SG88 23 57 SCI TSH -0.14 0.44 30 -0.14 2004 SG88 67 57 MCI TSH -0.15 0.51 21 -0.15 49 77 2004 SG88 18 138 SCI TSH -0.15 0.26 27 -0.15 2004 SG88 4 164 SAI TSH -0.16 0.77 20 -0.16 61 0.23 2004 SG88 83 59 SCI TSH -0.17 0.24 16 -0.17 2004 SG88 39 131 SCI TSH -0.21 0.25 20 -0.21 2004 SG88 85 95 SCI TSH -0.23 0.36 23 -0.23 2004 SG88 32 54 SCI TSH -0.32 0.77 27 -0.32 63 24 2004 SG88 65 115 MCI SBH -0.35 1.36 34 -11.60 92 313 2004 SG88 60 92 SAI TSH -0.38 0.41 20 -0.38 _

2004 SG88 65 113 MCI SBH -0.54 0.95 31 -11.79 84 120 l 2004 SG88 53 77 SAI TSH -0.57 0.28 11 -0.57 2004 SG88 34 122 SCI SBH -0.72 0.26 20 -11.97 2004 SG88 11 63 SAI TSH -0.85 0.35 17 -0.85 2004 SG88 53 95 MAI TSH -0.88 0.94 15 -0.88 46 0.55 2004 SG88 65 113SCI 8 SBH -0.96 0.39 24 -12.21 2004 SG88 18 62 SAI TSH -0.99 0.27 15 -0.99 _

2004 SG88 44 42 SAI TSH -1.13 0.50 13 -1.13 _

Appendix 1 Page 1

San Onofre Unit 2 Cycle 13 Tube Inspection Report Request for Additional Informnation Appendix 1 - San Onofre Unit 2 Steam Generator E-088 Axial and Circumferential Indications At or Below The To=-of-Tubesheet Location Circ Axa Relative To Depth Length OD? Yes or Outage SG Row Col Ind Elevation Volts Degrees Top-of- (%0) (de- Length Blank If No Tubesheet grees) (inches) 2004 SG88 18 62 SAI TSH -1.14 0.45 17 -1.14 2004 SG88 30 108 SAI TSH -1.17 0.54 14 -1.17 37 0.18 2004 SG88 49 103 SAI TSH -1.21 0.45 17 -1.21 2004 SG88 64 56 SAI TSH -1.22 0.34 14 -1.22 2004 SG88 63 91 SAI TSH -1.22 0.43 16 -1.22 2004 SG88 53 79 SAI TSH -1.24 0.38 14 -1.24 2004 SG88 47 105 SAI TSH -1.29 0.55 14 -1.29 34 0.25 2004 SG88 43 67 SAI TSH -1.32 0.46 15 -1.32 2004 SG88 51 101 SAI TSH -1.36 0.52 22 -1.36 64 0.21 2004 SG88 18 60 SAI TSH -1.47 0.56 14 -1.47 39 0.16 2004 SG88 47 69 SAI TSH -1.62 0.33 17 -1.62 2004 SG88 52 114 SAI TSH -1.67 0.49 15 -1.67 2004 SG88 28 118 SAI TSH -1.78 0.45 13 -1.78 2004 SG88 18 62 SAI TSH -1.80 0.49 7 -1.80 2004 SG88 63 81 SAI TSH -1.86 0.30 18 -1.86 2004 SG88 51 105 SCI SBH -1.87 0.33 21 -13.12 2004 SG88 51 101 SAI TSH -1.92 0.40 18 -1.92 _

2004 SG88 52 114 SAI TSH -1.92 0.52 15 -1.92 43 0.17 2004 SG88 27 55 SCI TSH -2.00 0.38 17 -2.00 2004 SG88 12 144 SAI TSH -2.03 0.51 16 -2.03 46 0.19 2004 SG88 22 120 SAI TSH -2.06 0.53 16 -2.06 46 0.13 1 2004 SG88 18 54 SCI TSH -2.06 0.34 25 -2.06 2004 SG88 51 101 SAI TSH -2.25 0.57 17 -2.25 50 0.14 2004 SG88 51 101 SAI TSH -2.60 0.33 25 -2.60 2004 SG88 42 122 SAI TSH -2.60 0.51 13 -2.60 42 0.13 2004 SG88 43 63 SAI TSH -2.93 0.65 18 -2.93 47 0.17 2004 SG88 43 113 SAI TSH -2.97 0.81 16 -2.97 46 0.15 2004 SG88 65 115 SCI SBH -3.22 0.27 15 -14.47 2004 SG88 47 65 SAI TSH -3.36 0.58 10 -3.36 31 0.29 2004 SG88 7 121 MCI TSH -3.47 0.37 23 -3.47 2004 SG88 30 56 SCI TSH -3.61 0.46 17 -3.61 2004 SG88 19 123 SCI TSH -3.68 0.37 18 -3.68 2004 SG88 47 127 SCI TSH -3.73 0.48 21 -3.73 2004 SG88 64 66 SAI TSH -3.84 0.69 13 -3.84 38 0.33 2004 SG88 43 65 SAI TSH -3.85 0.66 16 -3.85 49 0.13 2004 SG88 59 87 SAI TSH -3.86 0.37 14 -3.86 2004 SG88 43 65 SAI TSH -3.99 0.60 14 -3.99 54 0.13 2004 SG88 57 55 SCI TSH -4.06 0.33 29 -4.06 2004 SG88 47 65 SAI TSH -4.27 0.55 10 -4.27 26 0.88 2004 SG88 11 35 SAI TSH -4.34 0.45 21 -4.34 2004 SG88 34 124 SAI TSH -4.37 0.37 15 -4.37 2004 SG88 42 104 SAI TSH -4.45 0.54 23 -4.45 58 0.24 2004 SG88 26 140 SCI TSH -5.12 0.51 29 -5.12 74 36 2004 SG88 7 139 SCI TSH -5.48 0.35 17 -5.48 2004 SG88 17 113 MCI TSH -5.53 0.43 21 -5.53 2004 SG88 25 127 SCI TSH -6.20 0.60 21 -6.20 53 27 2004 SG88 47 651SAI TSH -6.30 0.48 12 -6.30 2004 SG88 25 39 SAI TSH -6.56 0.37 11 -6.56 2004 SG88 34 124 SAI TSH -6.65 0.48 11 -6.65 2004 SG88 49 73 SAI TSH -6.77 0.49 18 -6.77 Appendix 1 Page 2

San Onofre Unit 2 Cycle 13 Tube Inspection Report Request for Additional Information Appendix 1 - San Onofre Unit 2 Steam Generator E-088 Axial and Circumferential Indications At or Below The Too-of-Tubesheet Location Circ Axial Relative To Depth Length OD? Yes or Outage SG Row Col Ind Elevation Volts Degrees Len Length Top-of- (%) (de- (ice)Blank If No Tubesheet arees) (nhs 2004 SG88 18 62 MCI TSH -6.78 0.41 26 -6.78 2004 SG88 44 116 SAI TSH -6.83 0.89 20 -6.83 57 0.12 2004 SG88 44 114 SCI TSH -7.05 0.46 21 -7.05 2004 SG88 18 42 SCI TSH -7.18 1.95 32 -7.18 91 60 2004 SG88 51 107 SAI TSH -7.21 0.83 17 -7.21 51 0.49 2004 SG88 7 43 SAI TSH -7.23 0.59 22 -7.23 58 0.21 2004 SG88 13 57 SCI TSH -7.23 0.44 21 -7.23 2004 SG88 75 119 SAI TSH -7.24 0.59 12 -7.24 34 0.14 2004 SG88 43 75 SAI TSH -7.25 0.39 15 -7.25 2004 SG88 16 54 SCI TSH -7.49 0.28 22 -7.49 2004 SG88 51 107 SAI TSH -7.52 0.42 12 -7.52 2004 SG88 10 132 SCI TSH -7.68 0.82 33 -7.68 76 61 2004 SG88 44 114 MCI TSH -7.82 2.34 32 -7.82 89 85 2004 SG88 26 140 SCI TSH -7.93 0.80 30 -7.93 69 28 2004 SG88 34 124 SAI TSH -8.07 0.56 18 -8.07 53 _ 0.15 2004 SG88 57 103 SAI TSH -8.31 0.37 13 -8.31 1 2004 SG88 7 135 MCI TSH -8.60 5.73 39 -8.60 100 325 2004 SG88 10 56 SCI TSH -8.84 1.06 26 -8.84 76 71 2004 SG88 83 121 SCI TSH -9.02 0.46 16 -9.02 2004 SG88 ' 34 32 SCI TSH -9.20 1.06 26 -9.20 65 28 2004 SG88 60 134 SCI TSH -9.25 0.72 23 -9.25 72 39 2004 SG88 4 54 MCI TSH -9.35 2.50 33 -9.35 92 129 2004 SG88 34 124 SAI TSH -9.47 0.52 19 -9.47 56 0.15 2004 SG88 59 33 SAI TSH -9.50 2.67 29 -9.50 81 0.45 2004 SG88 34 124 SAI TSH -9.68 0.44 17 -9.68 2004 SG88 34 32 SCI TSH -9.76 0.75 22 -9.76 60 24 2004 SG88 18 134 SCI TSH -9.76 2.18 40 -9.76 100 172 2004 SG88 25 57 SCI TSH -9.83 0.24 15 -9.83 1 2004 SG88 37 35 SCI TSH -9.83 0.37 20 -9.83 2004 SG88 34 124 SAI TSH -9.83 0.38 14 -9.83 2004 SG88 25 51 SCI TSH -9.88 2.02 38 -9.88 100 88 2004 SG88 71 113 MCI TSH -10.09 0.45 32 -10.09 2004 SG88 18 60 SCI TSH -10.13 0.57 24 -10.13 56 28 2004 SG88 34 124 SAI TSH -10.18 0.46 14 -10.18 2004 SG88 12 54 SCI TSH -10.18 4.53 51 -10.18 100 65 2004 SG88 25 121 SCI TSH -10.25 0.68 30 -10.25 67 31 2004 SG88 34 124 SAI TSH -10.42 1.05 22 -10.42 64 0.25 2004 SG88 49 73 SAI TSH -10.42 0.35 18 -10.42 2004 SG88 15 143 SCI TSH -10.48 4.95 38 -10.48 100 157 2004 SG88 87 59 SCI TSH -10.53 0.92 29 -10.53 82 34 2004 SG88 68 114 SCI TSH -10.55 0.33 19 -10.55 2004 SG88 49 73 SAI TSH -10.63 1.51 25 -10.63 71 0.42 2004 SG88 25 121 SCI TSH -10.70 0.80 27 -10.70 73 31 2004 SG88 71 113 SCI TSH -10.72 0.38 26 -10.72 2004 SG88 64 110 SAI TSH -10.76 0.50 16 -10.76 2004 SG88 64 110 SAI TSH -10.93 0.44 18 -10.93 2004 SG88 28 108 SAI TSH -11.22 2.66 29 -11.22 85 0.63 2004 SG88 74 120 SCI TSH -11.24 0.50 17 -11.24 2004 SG88 46 104 SCI TSH -11.39 0.26 19 -11.39 2004 SG88 34 124 SCI TSH -11.40 0.30 25 -11.40 1 Appendix 1 Page 3

San Onolre Unit 2 Cycle 13 Tube Inspection Report Request for Additional Inforrnation Appendix 1 - San Onofre Unit 2 Steam Generator E-088 Axial and Circumferential Indications At or Below The Ton-of-Tubesheet Location Clrc A.xial Outage SG Row Col Ind Elevation Volts Degrees Relative To Depth Length LengthO Yes o Top-of- (% (de- gtnhesBlank If No

_ Tubesheet _rees) 2004 SG88 45 121 SCI TSH -11.48 0.32 22 -11.48 _

2004 SG88 34 40 SCI TSH -11.64 0.59 20 -11.64 47 27 2004 SG88 126 52 SCI TSH -11.69 0.79 15 -11.69 41 52 2004 SG88 37 133 SCI TSH -11.87 5.55 38 -11.87 99 129 2004 SG88 34 32 SCI TSH -11.92 0.85 22 -11.92 63 32 2004 SG88 31 125 SCI TSH -11.92 0.98 29 -11.92 76 31 2004 SG88 34 40 SCI TSH -12.06 0.64 22 -12.06 56 35 2004 SG88 13 23 SAI TSH -12.09 0.95 16 -12.09 43 0.31 2004 SG88 18 136 SCI TSH -12.11 3.38 37 -12.11 99 74 2004 SG88 67 53 SCI TSH -12.20 0.45 21 -12.20 2004 SG88 69 127 SAI TSH -12.49 1.13 20 -12.49 58 0.19 2004 SG88 46 110 MCI TSH -12.49 0.69 31 -12.49 64 160 2004 SG88 28 108 SAI TSH -12.55 0.64 21 -12.55 58 0.23 2004 SG88 44 60 SCI TSH -12.73 3.16 38 -12.73 99 81 2004 SG88 65 53 SCI TSH -12.74 2.59 38 -12.74 95 108 2004 SG88 65 47 SCI TSH -12.79 0.69 25 -12.79 54 31 2004 SG88 82 84 MCI TSH -13.09 0.63 22 -13.09 47 111 2004 SG88 21 51 SCI TSH -13.13 0.67 32 -13.13 70 40 2004 SG88 26 140 SCI TSH -13.39 1.97 36 -13.39 91 36 2004 SG88 28 108 SAI TSH -13.55 0.88 21 -13.55 61 0.15 2004 SG88 82 82 SCI TSH -13.89 0.33 14 -13.89 2004 SG88 34 40 SCI TSH -14.24 0.43 18 -14.24 2004 SG88 31 125 SCI TSH -14.41 1.47 35 -14.41 89 39 2004 SG88 98 56 SCI TSH -14.48 3.20 33 -14.48 92 50 2004 SG88 34 32 SCI TSH -14.60 1.82 31 -14.60 85 55 2004 SG88 51 107 SCI TSH -15.08 0.79 18 -15.08 61 27 2004 SG88 34 40 SCI TSH -15.31 0.40 13 -15.31 2004 SG88 51 107 SCI TSH -15.57 0.82 26 -15.57 67 31 2004 SG88 28 42 SAI TSH -16.49 0.36 14 -16.49 2004 SG88 51 107 SCI TSH -16.50 1.21 28 -16.50 75 31 2004 SG88 87 83 SCI TSH -16.77 0.40 18 -16.77 2004 SG88 37 25 SAl TSH -17.22 0.60 18 -17.22 51 0.34 2004 SG88 37 25 SAl TSH -17.40 0.27 16 -17.40 = = _

Location Abbreviations TSH lTop-of-Tubesheet, Hot Leg .

SBH Sleeve Bottom, Hot Leg _

TEH Tube End, Hot Leg I __

Appendix 1 Page 4

San Onofre Unit 2 Cycle 13 Tube Inspection Report Request for Additional Information Appendix 2 - -San Onofre Unit 2 Steam Generator E-088 Indications Within the Tubesheet in 2004 Number of Axial and Circumferential Indications 0 2 4 6 8 10 12 14 16 18 20

-1.0

-2.0

-3.0

-4.0

-5.0

-6.0

-7.0 w -8.0

-9.0 a) 0 -10.0 0 -11.0 I-0

'- -12.0

-13.0 (0

-14.0 C)

-15.0

-16.0

-17.0

-18.0

-19.0

-20.0

-21.0

-22.0

-23.0 Appendix 2 FANP Tube Integrity Engineering 9/22/2004 2:33 PM

San Onoire Unit 2 Cycle 13 Tube Inspection Report Request for Additional Information Appendix 3 - San Onofre Unit 2 Steam Generator E-089 Axial and Circumferential Indications At or Below The Too-of-Tubesheet Location Circ Axial OD? Yes Outage SG Row Col Ind Elevation Volts Degrees Relative To Depth Length Length or Blank Top-of- (%/) (de- (nhs fN

___ ___ _____Tubesheet ___ grees) (nhs fN 2004 SG89 82 76 SCI TSH 0.00 0.20 26 0.00 1 2004 SG89 8 114 SCI TSH 0.00 0.31 17 0.00 2004 SG89 43 65 SCI TSH -0.05 0.14 97 -0.05 Yes 2004 SG89 81 125 SCI TSH -0.05 0.55 25 -0.05 60 51 2004 SG89 24 60 SCI TSH -0.06 0.29 20 -0.06 _ _

2004 SG89 39 67 SAI TSH -0.07 0.30 114 -0.07 Yes 2004 SG89 28 42 SCI TSH -0.08 0.35 27 -0.08 2004 SG89 78 74 SCI TSH -0.09 0.62 25 -0.09 40 42 2004 SG89 57 103 MCI TSH -0.10 0.63 18 -0.10 49 99 2004 SG89 24 152 SCI TSH -0.11 0.39 24 -0.11 _

2004 SG89 27 147 SCI TSH -0.11 0.25 30 -0.11 1 2004 SG89 56 38 SCI TSH -0.14 0.27 20 -0.14 2004 SG89 51 51 SCI TSH -0.15 0.45 20 -0.15 2004 SG89 10 140 SCI TSH -0.35 0.15 20 -0.35 2004 SG89 45 73 SAI TSH -0.42 0.37 11 -0.42 2004 SG89 45 73 SAI TSH -0.72 0.47 16 -0.72 2004 SG89 142 86 SCI TSH -0.88 1.09 15 -0.88 41 54 1 2004 SG89 8 114 SAI TSH -1.02 0.38 14 -1.02 2004 SG89 39 73 SAl TSH -1.21 0.43 18 -1.21 2004 SG89 46 72 SAI TSH -2.67 0.37 17 -2.67 2004 SG89 2 118 SCI TSH -3.06 0.27 20 -3.06 2004 SG89 45 67 SAI TSH -3.44 0.49 18 -3.44 _

2004 SG89 47 41 SAI TSH -3.48 0.55 10 -3.48 32 1 0.19 2004 SG89 4 10 SAI TSH -3.84 0.42 10 -3.84 2004 SG89 138 110 SAI TSH -4.26 0.31 11 -4.26 _

2004 SG89 36 126 SCI TSH -4.32 0.32 26 -4.32 2004 SG89 45 47 SAI TSH -4.74 0.33 26 -4.74 2004 SG89 114 34 SAI TSH -5.00 0.30 8 -5.00 2004 SG89 116 106 SAI TSH -5.02 0.35 16 -5.02 2004 SG89 8 114 SCI TSH -5.80 0.31 16 -5.80 2004 SG89 38 116 SAI TSH -6.02 0.66 20 -6.02 53 0.15 2004 SG89 77 115 SCI TSH -6.40 0.31 23 -6.40 2004 SG89 2 118 SCI TSH -6.46 0.50 16 -6.46 2004 SG89 36 132 SCI TSH -6.64 0.50 22 -6.64 2004 SG89 26 110 SMI TSH -7.21 1.17 22 -7.21 54 0.2 2004 SG89 95 93 SCI TSH -7.33 1.17 28 -7.33 67 28 2004 SG89 12 138 SCI TSH -7.34 1.94 33 -7.34 82 71 2004 SG89 29 127 MCI TSH -7.59 0.46 27 -7.59 2004 SG89 39 127 SCI TSH -7.81 1.57 27 -7.81 69 37 2004 SG89 5 115 SCI TSH -7.82 0.85 28 -7.82 58 27 2004 SG89 22 62 SAI TSH -8.16 0.43 18 -8.16 _

2004 SG89 36 134 SCI TSH -8.22 0.35 18 -8.22 2004 SG89 46 44 SAI TSH -8.24 3.53 31 -8.24 92 0.49 2004 SG89 12 120 SCI TSH -8.27 0.80 30 -8.27 50 37 2004 SG89 91147 MCI TSH -8.28 1.41 26 -8.28 68 125 2004 SG89 33 127 SCI TSH -8.34 1.27 30 -8.34 82 33 2004 SG89 9 131 MCI TSH -8.53 2.36 37 -8.53 100 236 2004 SG89 42 124 MCI TSH -8.55 0.82 30 -8.55 54 206 2004 SG89 16 58 SCI TSH -8.56 0.88 29 -8.56 69 36 Appendix 3 Page 1

San Onofre Unit 2 Cycle 13 Tube Inspection Report Request for Additional Information Appendix 3- San Onofre Unit 2 Steam Generator E-089 Axial and Circumferential Indications At or Below The Too-of-Tubesheet Location Circ Axlal OD? Yes Outage SG Row Col Ind Elevation Volts Degrees Relative To Depth Length Length or Blank Top-of- (% (de- (nhs fN

______ Tubesheet grees) (

2004 SG89 22 62 SAI TSH -8.82 0.42 17 -8.82 2004 SG89 97 107 SAI TSH -8.96 1.01 18 -8.96 53 0.17 2004 SG89 78 64 SAI TSH -9.18 1.85 27 -9.18 78 0.32 2004 SG89 39 73 SAI TSH -9.19 0.64 21 -9.19 60 0.18 2004 SG89 95 77 SAI TSH -9.20 2.11 25 -9.20 78 0.37 2004 SG89 39 127 SCI TSH -9.34 14.03 46 -9.34 96 189 2004 SG89 78 64 SAI TSH -9.35 0.89 21 -9.35 60 0.15 2004 SG89 4 126 MCI TSH -9.35 1.62 36 -9.35 84 126 2004 SG89 9 35 SCI TSH -9.50 3.22 34 -9.50 100 76 2004 SG89 14 124 SAI TSH -9.52 1.72 27 -9.52 74 0.22 2004 SG89 9 127 MCI TSH -9.73 3.54 37 -9.73 100 308 2004 SG89 15 37 SCI TSH -9.74 0.291 19 -9.74 _

2004 SG89 78 64 SAI TSH -9.76 0.40 13 -9.76 2004 SG89 39 73 SAI TSH -10.15 4.06 35 -10.15 100 0.86 2004 SG89 18 118 SCI TSH -10.19 0.33 28 -10.19 2004 SG89 38 40 SCI TSH -10.21 0.84 28 -10.21 60 28 2004 SG89 9 131 SCI TSH -10.31 1.18 22 -10.31 80 28 2004 SG89 78 64 SAI TSH -10.51 0.961 26 -10.51 73 0.2 2004 SG89 78 64 SAI TSH -10.68 1.36 24 -10.68 70 1 0.17 2004 SG89 9 131 MCI TSH -10.73 1.14 29 -10.73 91 178 2004 SG89 29 127 MCI TSH -10.82 1.17 32 -10.82 77 225 2004 SG89 78 64 SAI TSH -10.99 0.26 14 -10.99 2004 SG89 9 131 SCI TSH -11.17 3.31 34 -11.17 100 76 2004 SG89 18 128 SCI TSH -11.20 0.55 14 -11.20 57 34 2004 SG89 42 124 MCI TSH -11.31 1.19 25 -11.31 67 116 2004 SG89 71 71 SAI TSH -11.36 2.77 34 -11.36 100 0.45 2004 SG89 47 41 SAI TSH -11.41 0.50 10 -11.41 2004 SG89 18 128 SCI TSH -11.61 3.75 34 -11.61 93 53 2004 SG89 85 113 SAI TSH -11.79 1.61 17 -11.79 47 0.2 2004 SG89 95 141 SAI TSH -12.01 0.79 11 -12.01 30 0.14 2004 SG89 39 69 SCI TSH -12.09 0.62 17 -12.09 63 23 2004 SG89 82 112 SAI TSH -12.24 0.91 20 -12.24 50 0.25 2004 SG89 95 141 SAI TSH -12.35 1.23 14 -12.35 39 0.17 2004 SG89 42 124 SAI TSH -12.60 0.80 17 -12.60 46 0.13 2004 SG89 85 113 SAI TSH -12.78 2.35 18 -12.78 50 0.42 2004 SG89 89 111 SAI TSH -12.99 3.22 29 -12.99 84 0.43 2004 SG89 82 112 SAI TSH -13.10 1.14 16 -13.10 41 0.15 2004 SG89 82 112 SAI TSH -13.28 1.41 18 -13.28 47 0.22 2004 SG89 89 87 SAI TSH -13.33 0.52 17 -13.33 45 0.13 2004 SG89 82 112 SAI TSH -13.65 1.98 19 -13.65 53 0.37 2004 SG89 75 139 MAI TSH -13.75 2.48 22 -13.75 77 0.63 2004 SG89 51 61 SAI TSH -14.07 0.89 21 -14.07 60 0.18 2004 SG89 9 131 SCI TSH -14.44 0.68 33 -14.44 68 32 2004 SG89 46 136 SAI TSH -14.55 0.94 24 -14.55 67 0.18 2004 SG89 46 136 SAI TSH -14.76 1.14 24 -14.76 64 0.18 2004 SG89 46 130 SAI TSH -14.96 1.49 21 -14.96 61 0.17 2004 SG89 108 110 MAI TSH -14.99 1.26 25 -14.99 62 0.22 2004 SG89 112 120 SAI TSH -15.78 2.52 25 -15.78 67 0.44 2004 SG89 24 60 SAI TSH -15.96 0.54 22 -15.96 54 0.15 Appendix 3 Page 2

San Onofre Unit 2 Cycle 13 Tube Inspection Report Request for Additional Information Appendix 3 - San Onofre Unit 2 Steam Generator E-089

____ Axial and Circumferential Indications At or Below The Top-of-Tubesheet Location Circ Axa OD Ye Outage SG Row Col Ind Elevation Volts Degrees Lecative To Depth Length Length or Blank

___Tubesheet ___ rees) (inches) If No 2004 SG89 47 45 SAI TEH 6.43 2.80 31 -16.57 93 0.42 2004 SG89 81 131 SCI TSH -16.67 1.241 15 -16.67 46 56 2004 SG89 25 109 SAI TSH -18.05 0.98 28 -18.05 74 0.25 2004 SG89 65 151 SAI TSH -18.48 0.53 14 -18.48 39 0.12 2004 SG89 9 63 SAI TSH -19.01 2.56 33 -19.01 100 0.72 2004 SG89 22 66 SCI TEH 0.83 0.42 24 -22.17 Location Abbreviations I TSH Top-of-Tubesheet, Hot Leg SBH Sleeve Bottom, Hot Leg TEH Tube End, Hot Leg 1_ __ I II Appendix 3 Page 3

San Onofre Unit 2 Cycle 13 Tube Inspection Report Request for Additional Information Appendix 4 - San Onofre Unit 2 Steam Generator E-089 Indications Within the Tubesheet in 2004 Number of Axial and Circumferential Indications 0 2 4 6 8 10 12 14 16 18 20

+ + I 4 4 4

-1.0

-2.0

-3.0

-4.0

-5.0

-6.0

-7.0 4.-

aj

-8.0 11 (a -9.0 11

0) -10.0 0~ -11.0 0 -12.0

-13.0 ..I I ". I--- ,1.- 5 0

-14.0 .. -X , ... I 6 0,

-15.0 2 C)

-16.0 1. .-~ . . .. .-. ... 2

-17.0 0

-18.0 . -~..-. . -.. -. I.. 2 K,

-19.0

-20.0 0

-21.0 0

-22.0

-23.0 0 & L . .A. -& I L L Appendix 4 FANP Tube Integrity Engineering 9/22/2004 2:33 PM