ML060610081

2005 Steam Generator Tube Inspection Results Report

ML060610081
Person / Time
Site:	Calvert Cliffs
Issue date:	02/27/2006
From:	Joseph E Pollock Constellation Energy Group
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
Download: ML060610081 (9)

Text

Calvert Cliffs Nuclear Power Plant 1650 Calvert Cliffs Parkway Constellation Generation Group, LLC Lusby, Maryland 20657 I Constellation Energy February 27, 2006 U. S.Nuclear Regulatory Commission Washington, DC 20555 ATTENTION: Document Control Desk

SUBJECT:

Calvert Cliffs Nuclear Power Plant Unit Nos. 1 & 2; Docket Nos. 50-317 & 50-318 2005 Steam Generator Tube Inspection Results Report

REFERENCE:

(a) Calvert Cliffs Nuclear Power Plant Units 1 and 2 Technical Specification 5.6.9.b Reference (a) requires that we report, on an annual basis, the results of the steam generator tube inservice inspection conducted in the past year.

This letter provides the results of the steam generator tube inspection conducted on Calvert Cliffs Unit 2 in 2005. This inspection was the first in-service inspection following steam generator replacement.

There were no inspections conducted on the Calvert Cliffs Unit I Steam Generators in 2005. This report includes the number and extent of tubes examined and indications identified.

Inspection Scone:

The inspection of Calvert Cliffs Unit 2 Steam Generators (21 & 22) was conducted using bobbin coil and motorized rotating plus point inspection technologies. All distorted bobbin coil indications were dispositioned with the plus point probe. The table below identifies the number and extent of the tubes inspected.

Inspection Zone Number of Tubes Inspected Tube Extent Examined Inspection_____________

Zoe(SG _ 21/SG 22) TubeExtentExamined 100% Full Length Bobbin Coil 8468/8471 Tube end to tube end Inspection Zone Number of Tubes Inspected Tube Extent Examined Inspection______________

Zoe(SG _ 21/SG 22) Tube Extent Examined Plus Point Probe - based on 60/145 Specific indication location bobbin coil calls

Document Control Desk February 27, 2006 Page 2 Results:

Attachment (1) lists the upper bundle tube support wear indications detected with the bobbin coil and confirmed with the motorized rotating plus point probe. No steam generator tubes were found with crack-like indications. There were no tubes plugged in SG 21 during the 2005 inspection. During the pre-service examination at the manufacturing facility, three tubes were plugged in SG 21. To date, a total of three tubes have been plugged in SG 21. There were no tubes plugged at the manufacturing facility in SG 22. A total of 29 tubes were plugged and stabilized in SG 22. All of the tubes in SG 22 were plugged and stabilized due to loose parts concerns found during the 2005 inspection. To date, a total of 29 tubes have been plugged in SG 22.

Should you have questions regarding this matter, please contact Mr. L. S. Larragoite at (410) 495-4922.

Very truly yours, sŽph E. Pollock Plant General Manager JEP/CAN/bjd

Attachment:

(1) Results of Bobbin Coil and Motorized Rotating Plus Point Exams for Unit 2 Nos. 21 and 22 Steam Generators cc: P. D. Milano, NRC Resident Inspector, NRC S. J. Collins, NRC R. I. McLean, DNR

ATTACHMENT (1)

RESULTS OF BOBBIN COIL AND MOTORIZED ROTATING PLUS POINT EXAMS FOR UNIT 2 NOS. 21 AND 22 STEAM GENERATORS Calvert Cliffs Nuclear Power Plant, Inc.

February 27,2006

ATTACHMENT (1)

RESULTS OF BOBBIN COIL AND MOTORIZED ROTATING PLUS POINT EXAMS FOR UNIT 2 NOS. 21 AND 22 STEAM GENERATORS Maximum Structural Length Steam Amplitude Assumed to be 1.5" Generator ROW COL Elevation Offset (inch) (Volts) Depth (Bobbin) Unless Specifically (lt) (%TW) Available 21 45 79 F07 0.50 0.12 10 1.5 21 57 107 F08 1.42 0.13 6 1.5 21 58 98 F05 -1.86 0.1 10 1.5 21 63 69 F09 1.99 0.12 7 1.5 21 69 115 F04 -2.11 0.09 8 1.5 21 77 83 F08 0.58 0.12 5 1.5 21 80 74 F08 1.71 0.08 7 1.5 21 80 76 F07 -0.73 0.13 11 1.5 21 83 97 F08 1.70 0.1 10 1.5 21 84 76 F07 -0.84 0.14 11 1.5 21 85 75 F07 1.66 0.1 5 1.5 21 85 79 F08 0.86 0.25 14 1.5 21 86 84 F06 -0.72 0.12 10 1.5 21 87 75 F07 1.66 0.12 10 1.5 21 87 75 F08 0.68 0.11 9 1.5 21 87 83 F06 0.58 0.16 8 1.5 21 87 87 F08 1.68 0.15 12 1.5 21 87 93 F08 1.67 0.14 12 1.5 21 87 97 F08 1.91 0.11 10 1.5 21 88 78 F06 1.09 0.18 7 1.5 21 89 75 F06 -0.70 0.23 13 1.5 21 89 87 F07 0.67 0.13 7 1.5 21 92 78 F08 1.82 0.14 11 1.5 21 93 73 F08 -0.56 0.15 B 1.5 21 93 83 F06 -0.55 0.15 13 1.5 21 94 74 F06 -1.68 0.13 7 1.5 21 95 83 F07 -0.54 0.11 5 1.5 21 95 83 F08 -0.68 0.15 7 1.5 21 95 87 F08 1.73 0.33 22 1.24 21 95 87 F09 0.79 0.12 10 1.5 21 95 99 F05 -1.43 0.11 10 1.5 21 97 75 F07 1.75 0.13 7 1.5 21 97 83 F07 -0.55 0.11 10 1.5 21 98 74 F06 -1.80 0.13 7 1.5 21 98 82 F08 1.97 0.11 6 1.5 21 99 83 F08 -0.56 0.11 5 1.5 21 99 87 F06 -1.75 0.12 10 1.5 21 101 75 F06 -0.51 0.24 13 1.5 21 101 87 F07 0.70 0.16 9 1.5 1

ATTACHMENT (1)

RESULTS OF BOBBIN COIL AND MOTORIZED ROTATING PLUS POINT EXAMS FOR UNIT 2 NOS. 21 AND 22 STEAM GENERATORS Maximum Structural Length Generator ROW COL Elevation Offset (inch) (Volts) Deph(Bbin) Av t be I Aumed 21 102 88 F06 -0.68 0.1 6 1.5 21 103 83 F06 0.44 0.15 7 1.5 21 103 87 F07 0.57 0.22 17 0.38 21 104 78 F08 1.93 0.09 7 1.5 21 104 84 F06 -0.65 0.13 6 1.5 21 104 88 F05 -1.80 0.25 19 0.61 21 104 88 F06 -0.66 0.25 19 0.4 21 105 83 F07 -0.14 0.35 12 1.5 21 106 76 F06 1.12 0.45 15 1.5 21 106 90 F06 -0.79 0.15 9 1.5 21 107 75 F07 1.78 0.1 9 1.5 21 107 83 F07 -0.07 0.45 15 1.5 21 107 87 F07 0.64 0.26 19 0.42 21 108 76 F06 1.21 0.41 14 1.5 21 110 76 F06 0.61 0.1 5 1.5 21 110 88 F06 -0.82 0.14 9 1.5 21 110 90 F06 -0.77 0.12 8 1.5 21 112 90 F06 -0.82 0.17 14 1.5 21 113 87 F07 0.72 0.17 9 1.5 22 32 6 F07 -1.26 0.11 6 1.5 22 37 35 F07 1.73 0.09 6 1.5 22 49 29 F07 1.76 0.14 7 1.5 22 57 127 F05 -2.21 0.1 5 1.5 22 69 83 F08 -0.61 0.13 6 1.5 22 74 82 F06 -1.84 0.11 6 1.5 22 74 94 F08 0.78 0.11 5 1.5 22 76 82 F06 -1.73 0.15 8 1.5 22 76 82 F08 1.89 0.12 6 1.5 22 78 82 F06 -1.78 0.2 11 1.5 22 79 81 F07 -0.85 0.16 9 1.5 22 79 93 F08 1.91 0.47 21 0.47 22 80 82 F06 -1.71 0.13 7 1.5 22 82 84 F08 0.75 0.12 6 1.5 22 82 94 F08 0.83 0.12 6 1.5 22 83 73 F08 0.73 0.36 15 1.5 22 83 75 F02 0.75 0.18 8 1.5 22 84 92 F08 0.64 0.13 7 1.5 22 84 94 F08 0.71 0.19 10 1.5 22 85 79 F08 0.71 0.16 9 1.5 2

ATTACHMENT (1)

RESULTS OF BOBBIN COIL AND MOTORIZED ROTATING PLUS POINT EXAMS FOR UNIT 2 NOS. 21 AND 22 STEAM GENERATORS Maximum Structural Length Steam Amplitude mxum Assumed to be 1.5" Generator ROW COL Elevation Offset (inch) (Volts) Depth (Bobbin) Unless Specifically ROW levtionOffet OL inc) (Vlts (%~W)Available 22 86 72 F05 -0.88 0.13 6 1.5 22 86 72 F06 -1.63 0.14 7 1.5 22 86 74 F06 -1.78 0.16 7 1.5 22 86 92 F08 0.77 0.13 7 1.5 22 86 94 F08 0.69 0.16 8 1.5 22 87 65 F08 0.68 0.2 9 1.5 22 87 83 F06 0.46 0.13 6 1.5 22 87 83 F07 0.46 0.41 17 0.72 22 87 83 F08 -0.62 0.21 10 1.5 22 88 76 F06 1.69 0.12 7 1.5 22 88 78 F06 -1.23 0.26 9 1.5 22 89 65 F08 0.76 0.21 11 1.5 22 89 69 F08 0.76 0.15 9 1.5 22 89 73 F08 0.74 0.33 16 0.65 22 89 83 F06 0.39 0.14 7 1.5 22 89 83 F07 0.43 0.14 7 1.5 22 89 83 F08 -0.68 0.12 6 1.5 22 90 82 F06 -1.86 0.14 8 1.5 22 91 65 F08 0.61 0.31 15 1.5 22 92 76 F06 1.64 0.16 9 1.5 22 93 73 F06 -0.86 0.12 7 1.5 22 93 83 F06 0.48 0.14 7 1.5 22 93 83 F07 0.39 0.15 7 1.5 22 94 76 F06 1.75 0.12 6 1.5 22 94 80 F06 -1.99 0.15 8 1.5 22 94 82 F06 -1.96 0.25 13 1.5 22 94 82 F07 0.70 0.13 7 1.5 22 95 83 F06 0.43 0.14 7 1.5 22 95 83 F07 0.43 0.19 9 1.5 22 96 82 F06 1.75 0.18 10 1.5 22 96 86 F06 -1.18 0.17 9 1.5 22 97 75 F06 -0.93 0.13 8 1.5 22 97 77 F06 -0.87 0.14 8 1.5 22 97 79 F06 -0.94 0.14 8 1.5 22 97 81 F07 -0.89 0.13 7 1.5 22 98 72 F08 1.82 0.13 6 1.5 22 98 76 F06 1.71 0.16 7 1.5 22 98 78 F08 1.57 0.14 7 1.5 22 98 82 F07 0.67 0.09 5 1.5 3

ATTACHMENT (1)

RESULTS OF BOBBIN COIL AND MOTORIZED ROTATING PLUS POINT EXAMS FOR UNIT 2 NOS. 21 AND 22 STEAM GENERATORS Structural Length Steam Amplitude Mxmm Assumed to be 1.5" Geneator ROW COL Elevation Offset (inch) (Volts) Depth (Bobbin) Unless Specifically

(%TW) Available 22 99 71 F08 -0.70 0.13 6 1.5 22 99 73 F07 1.66 0.11 5 1.5 22 99 77 F06 -0.77 0.33 14 1.5 22 99 83 F05 -0.61 0.13 6 1.5 22 99 83 F06 0.43 0.17 8 1.5 22 100 76 F06 -2.05 0.1 6 1.5 22 100 78 F06 -1.73 0.11 6 1.5 22 100 82 F06 -1.80 0.47 21 0.39 22 100 82 F07 0.77 0.18 10 1.5 22 100 82 F08 1.68 0.13 7 1.5 22 100 84 F07 1.82 0.14 7 1.5 22 101 77 F06 -0.76 0.17 9 1.5 22 101 83 F06 0.48 0.37 16 0.59 22 101 83 F07 0.50 0.27 12 1.5 22 101 87 F07 0.74 0.13 7 1.5 22 102 76 F07 -1.39 0.24 3 1.5 22 102 82 F06 -1.78 0.13 7 1.5 22 102 82 F09 0.74 0.12 7 1.5 22 102 86 F02 0.79 0.14 8 1.5 22 103 77 F06 -0.80 0.25 11 1.5 22 103 79 F06 -0.87 0.18 8 1.5 22 103 83 F06 0.39 0.26 12 1.5 22 103 83 F07 -0.14 0.17 5 1.5 22 103 87 F07 0.66 0.17 9 1.5 22 104 82 F06 -1.84 0.13 7 1.5 22 104 82 F07 0.71 0.14 7 1.5 22 105 67 F07 -1.30 0.1 6 1.5 22 105 75 F06 -0.88 0.17 9 1.5 22 105 77 F06 -0.87 0.25 13 1.5 22 105 79 F06 -0.81 0.28 14 1.5 22 105 79 F07 1.66 0.15 9 1.5 22 105 81 F06 -0.84 0.18 10 1.5 22 105 83 F05 -0.11 0.21 6 1.5 22 105 83 F06 0.46 0.12 6 1.5 22 105 83 F07 0.43 0.26 12 1.5 22 106 82 F06 -1.67 0.2 11 1.5 22 106 82 F07 0.79 0.26 14 1.5 22 107 75 F06 -0.86 0.28 12 1.5 22 107 77 F06 -0.84 0.21 9 1.5 4

ATTACHMENT (1)

RESULTS OF BOBBIN COIL AND MOTORIZED ROTATING PLUS POINT EXAMS FOR UNIT 2 NOS. 21 AND 22 STEAM GENERATORS Maximum Structural Length Steam ApiueAssumed to be 1.5" Generator W ROW COL COElevtion Ofset Elevation Of i (inch) AmplItude o Depth (Bobbin)

(%TWV) Unles~svSpaebciefically Aailable 22 107 79 F06 -0.82 0.17 8 1.5 22 107 81 F06 -0.84 0.2 11 1.5 22 107 83 F06 -0.05 0.17 5 1.5 22 107 83 F07 -0.07 0.46 12 1.5 22 108 74 F06 -1.86 0.1 6 1.5 22 108 76 F08 1.21 0.22 8 1.5 22 108 82 F07 0.80 0.2 11 1.5 22 108 82 F08 1.30 0.33 9 1.5 22 108 82 F09 0.64 0.2 11 1.5 22 108 84 F06 -0.85 0.2 9 1.5 22 108 84 F07 1.84 0.23 11 1.5 22 108 86 F06 -0.66 0.47 21 0.69 22 108 86 F07 1.59 0.15 8 1.5 22 108 86 F08 1.85 0.13 7 1.5 22 108 90 F06 -0.82 0.12 7 1.5 22 109 73 F06 -0.81 0.51 22 0.35 22 109 75 F06 -0.83 0.28 14 1.5 22 109 77 F06 -0.90 0.21 11 1.5 22 109 79 F06 -0.83 0.52 22 0.23 22 109 81 F06 -0.80 0.21 11 1.5 22 109 83 F06 0.46 0.12 6 1.5 22 109 85 F07 -1.32 0.7 16 0.65 22 109 87 F07 0.74 0.17 10 1.5 22 110 78 F07 0.73 0.19 9 1.5 22 111 73 F06 -0.84 0.27 12 1.5 22 111 75 F06 -0.79 0.3 13 1.5 22 111 77 F06 -0.89 0.62 23 0.42 22 111 79 F06 -0.77 0.3 13 1.5 22 111 81 F06 -0.84 0.19 11 1.5 22 113 75 F06 -0.94 0.16 9 1.5 22 113 77 F06 -0.90 0.65 25 0.4 22 113 81 F06 -0.75 0.17 9 1.5 22 113 83 F07 0.43 0.15 7 1.5 22 113 91 F02 -2.23 0.33 I 16 0.14 22 114 76 F06 0.73 0.11 5 1.5 22 114 84 F06 -1.23 0.24 7 1.5 22 115 73 F06 0.89 0.14 7 1.5 22 115 77 F06 -0.89 0.13 6 1.5 22 115 93 F07 0.68 0.13 7 1.5 5

ATTACHMENT (1)

RESULTS OF BOBBIN COIL AND MOTORIZED ROTATING PLUS POINT EXAMS FOR UNIT 2 NOS. 21 AND 22 STEAM GENERATORS Steam RW. Maximum Structural Length Geeator OW COL Elevation Offset (inch) Amplitude Depth Mxmm (Bobbin) Assumed U S to be 1.5 (Vols)

(TW)Available 22 117 91 F07 0.83 0.16 9 1.5 22 123 77 F06 -0.89 0.12 6 1.5 22 123 83 F07 0.07 0.57 14 1.5 22 123 113 F07 -0.63 0.12 6 1.5 22 124 76 F06 0.72 0.12 7 1.5 6