ML050610714
| ML050610714 | |
| Person / Time | |
|---|---|
| Site: | Calvert Cliffs  |
| Issue date: | 02/25/2005 |
| From: | Nietmann K Constellation Energy Group |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| Download: ML050610714 (8) | |
Text
Kevin J. Nietmann Plant General Manager 1650 Calvert Cliffs Parkway Lusby, Maryland 20657 410.495.4101 410.495.4787 Fax Constellation Energy Calvert Clfffs Nuclear Power Plant February 25, 2005 U. S. Nuclear Regulatory Commission Washington, DC 20555 ATTENTION:
SUBJECT:
Document Control Desk Calvert Cliffs Nuclear Power Plant UnitNos. 1 & 2; DocketNos. 50-317 & 50-318 2004 Steam Generator Tube Inspection Results Report
REFERENCE:
(a)
Calvert Cliffs Nuclear Power Plant Units Specification 5.6.9.b 1 and 2 Technical 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 I in 2004.
This inspection was the first in-service inspection following steam generator replacement.
There were no inspections conducted on the Calvert Cliffs Unit 2 Steam Generators in 2004. This report includes the number and extent of tubes examined and indications identified.
Inspection Scope:
The inspection of Calvert Cliffs Unit I Steam Generators (11 & 12) 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.
F Inspection Zone J Number of Tubes Inspected Tube Extent Examined Inspection Zone (SG 11/SG 12)
Tube Extent Examined 100% Full Length Bobbin Coil 8471/8471 Tube end to tube end Inspection Zone 1 Number of Tubes Inspected Tube Extent Examined Inspection________
Zone(SG 11/SG 12)
TubeExtentExamined Plus Point Probe - based on 98/101 Specific indication location bobbin probe calls 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-ADLq
Document Control Desk February 25, 2005 Page 2 like indications. No loose parts or any damage from loose parts were found during the inspection. There were no tubes plugged on Unit 1 as a result of the inspections.
Should you have questions regarding this matter, we will be pleased to discuss them with you.
Very truly yours, KJN/CAN/bjd
Attachment:
(1)
Results of Bobbin Coil and Motorized Rotating Plus Point Exams for Unit 1 Nos. II and 12 Steam Generators cc:
S. J. Collins, NRC (Without Attachment)
C. W. Fleming, Esquire R. V. Guzman, NRC Resident Inspector, NRC R. I. McLean, DNR
ATTACHMENT (1)
RESULTS OF BOBBIN COIL AND MOTORIZED ROTATING PLUS POINT EXAMS FOR UNIT 1 NOS. 11 AND 12 STEAM GENERATORS Calvert Cliffs Nuclear Power Plant, Inc.
February 25, 2005
ATTACHMENT (1)
RESULTS OF BOBBIN COIL AND MOTORIZED ROTATING PLUS POINT EXAMS FOR UNIT 1 NOS. 11 AND 12 STEAM GENERATORS Flaw Flaw Flaw Flaw Flaw Flaw Steam Row Column Location ocation Amplitude Depth Width Length Generator (Support)
(Onffcshe)t (Volts) (1)
(%TW) (1) (inch) (2)
(inch) (2) 11 68 84 F06
-0.81 0.43 8
0.16 0.67 11 76 86 F07 1.85 0.39 6
0.21 1.20 11 78 84 F08 0.78 0.48 7
0.27 1.34 11 85 81 F06
-0.84 0.32 4
0.16 0.82 11 87 79 F07 1.87 0.48 8
0.21 0.98 11 90 84 F10
-0.94 0.44 5
0.23 0.19 11 91 81 F07
-1.84 0.50 8
0.27 1.24 11 92 74 F07 0.79 0.50 8
0.27 0.72 11 92 76 F07 0.77 0.28 5
0.21 0.46 11 92 78 F08 1.77 0.58 9
0.27 1.39 11 92 78 F07 0.75 0.70 11 0.27 1.34 11 92 78 F06
-1.83 0.48 8
0.26 0.84 11 92 88 F08
-1.90 0.41 6
0.21 1.12 11 93 69 F08 0.72 0.43 7
0.23 0.48 11 94 74 F07 0.80 0.49 7
0.16 0.57 11 94 76 F07 0.76 0.34 5
0.21 0.36 11 94 82 F07 0.67 0.55 7
0.21 1.42 11 95 75 F07 1.64 0.71 11 0.21 0.77 11 95 83 F07
-0.61 0.97 11 0.27 1.46 11 95 85 F07 0.81 0.42 7
0.21 0.69 11 96 80 F06
-1.37 0.60 9
0.32 1.35 11 96 82 F07 0.94 0.34 6
0.21 0.33 11 97 75 F07 1.83 0.35 5
0.21 0.41 11 98 80 F07 0.70 0.61 8
0.21 1.03 11 98 82 F07 0.91 0.50 7
0.16 0.39 11 98 90 F07 1.81 0.42 8
0.26 0.91 11 99 79 F07 1.79 0.37 6
0.27 0.57 11 99 83 F06 0.51 0.45 5
0.21 0.92 11 99 89 F07 0.75 0.75 11 0.26 0.87 11 100 78 F06
-1.75 0.81 12 0.37 0.89 11 100 84 F07 1.75 0.43 6
0.27 0.52 11 100 90 F07 1.70 0.63 9
0.26 0.80 11 101 75 F07 1.73 0.86 11 0.27 0.67 11 101 79 F06
-0.78 0.26 4
0.16 0.21 11 101 79 F07 1.63 0.34 5
0.21 0.46 11 101 83 F07
-0.60 0.79 10 0.26 0.87 11 101 87 F07 0.82 0.52 8
0.26 0.79 11 101 87 F06
-1.75 0.53 8
0.26 1.14 11 102 78 F06
-1.79 0.37 5
0.26 0.47 11 102 86 F07 1.67 0.41 6
0.21 0.73 11 103 79 F07 1.78 0.58 9
0.22 0.76 11 103 81 F07
-1.78 0.36 6
0.21 0.68 11 104 80 F07 0.82 0.93 14 0.21 1.13 I
ATTACHMENT (1)
RESULTS OF BOBBIN COIL AND MOTORIZED ROTATING PLUS POINT EXAMS FOR UNIT 1 NOS. 11 AND 12 STEAM GENERATORS Flw Flaw Flaw Flaw Flaw Flaw Steam Row Column Location LOfafson Amplitude Depth Width Length Generator (Support)
(inffcshe)
(Volts) (1) (%TW) (1) (inch) (2)
(inch) (2) 11 104 82 F07 0.84 1.29 18 0.27 1.09 11 104 82 F06
-1.69 0.50 8
0.21 1.27 11 104 88 F06
-0.70 0.47 7
0.26 0.71 11 105 75 F07 1.75 0.56 7
0.21 0.88 11 105 79 F07 1.93 1.52 17 0.32 1.13 11 105 85 F07 0.83 0.78 10 0.21 1.04 11 105 89 F07 0.74 1.15 18 0.31 1.44 11 106 78 F07 0.70 0.67 9
0.32 0.77 11 106 78 F06
-1.79 0.64 8
0.26 1.30 11 106 82 F07 0.87 0.75 10 0.27 0.56 11 106 86 F07 1.80 0.55 7
0.21 0.56 11 107 79 F07
-1.75 0.65 10 0.21 0.88 11 107 83 F07
-0.57 1.32 14 0.37 0.91 11 107 85 F07 0.73 0.62 10 0.16 0.97 11 107 87 F06
-1.67 0.76 11 0.26 0.79 11 107 89 F07 0.77 0.60 9
0.26 0.71 11 108 84 F07 1.63 0.59 8
0.16 0.52 11 108 84 F06
-0.72 0.68 9
0.21 0.99 11 109 83 F08
-0.50 0.36 5
0.22 1.02 11 109 87 F06 1.22 0.45 7
0.26 1.10 11 110 76 F07 0.80 0.70 9
0.27 0.77 11 110 78 F07 0.84 0.62 8
0.21 0.72 11 110 78 F06
-1.75 1.01 13 0.32 0.78 11 111 87 F07 0.71 0.58 9
0.26 0.87 11 111 89 F07 0.65 0.55 8
0.21 0.40 11 112 76 F07 0.80 0.43 7
0.27 0.98 11 112 78 F07 0.77 0.87 13 0.32 1.18 11 112 80 F06 1.71 0.40 7
0.21 1.16 11 113 79 F06
-0.72 1.13 14 0.21 0.94 11 113 85 F07 0.81 0.57 8
0.22 0.87 11 113 89 F07 0.82 0.62 11 0.26 0.83 11 114 76 F07 0.68 0.43 6
0.21 0.52 11 114 78 F07 0.80 1.03 13 0.27 0.88 11 114 80 F07 0.84 0.82 11 0.21 1.29 11 114 82 F07 0.77 0.84 11 0.32 0.77 11 115 85 F07 0.94 0.52 8
0.22 0.97 11 115 87 F07 0.86 0.69 10 0.26 1.00 11 115 87 F06
-1.63 0.46 7
0.26 1.09 11 116 78 F07 0.84 0.41 7
0.16 0.57 11 116 86 F07 1.86 0.55 9
0.27 1.08 11 117 79 F07 1.81 0.92 12 0.27 1.29 11 117 79 F06
-0.76 1.72 19 0.32 1.35 11 117 87 F07 0.84 0.51 8
0.27 0.73 2
ATFACHMENT (1)
RESULTS OF BOBBIN COIL AND MOTORIZED ROTATING PLUS POINT EXAMS FOR UNIT 1 NOS. 11 AND 12 STEAM GENERATORS Flaw Flaw Flaw Flaw Flaw Flaw Steam Row Column Location Location Amplitude Depth Width Length Generator (Support)
Offset (Volts) (1
(%1W) (
(inch) (2)
(inch) (2) 11 118 78 F07 0.82 0.39 5
0.21 0.36 1 1 118 78 F06
-1.81 0.43 6
0.26 0.63 11 120 88 F07 1.71 0.40 6
0.26 0.84 11 120 88 F06
-0.84 0.33 5
0.26 0.62 11 123 81 F07 1.77 0.33 6
0.21 0.88 12 40 16 F06 0.78 0.42 7
0.17 0.30 12 83 87 F08 1.73 0.43 8
0.23 0.94 12 84 92 F08 0.66 0.50 9
0.17 0.42 12 85 59 F07 1.18 0.59 9
0.17 0.30 12 85 91 F05
-0.77 0.53 6
0.22 0.56 12 86 90 F07
-1.95 0.45 5
0.17 0.54 12 87 75 F07 1.70 0.51 8
0.23 0.42 12 87 77 F07 1.67 0.44 8
0.23 0.95 12 87 83 F05 0.38 0.37 7
0.23 0.54 12 88 92 F07 2.00 0.35 7
0.23 0.84 12 88 92 F08 0.66 0.32 6
0.23 0.48 12 89 83 F05 0.44 0.33 7
0.23 0.54 12 89 91 F06
-1.96 0.87 9
0.22 0.79 12 89 91 F07 0.67 0.72 8
0.22 0.68 12 89 91 FOS 1.82 0.61 7
0.17 0.68 12 91 75 F07 1.63 0.32 5
0.23 0.36 12 92 90 F07
-1.88 0.27 5
0.17 0.24 12 92 90 F07 1.22 0.55 10 0.17 1.28 12 92 92 F08 0.83 0.28 5
0.17 0.36 12 93 83 F06 0.41 0.59 11 0.23 0.78 12 I
94 76 F07 0.73 0.50 7
0.23 0.72 12 94 76 F06
-1.86 0.41 6
0.23 0.36 12 94 90 F07
-1.88 0.69 8
0.17 0.49 12 94 92 F07 2.02 0.66 7
0.22 0.62 12 95 79 F07 1.72 0.33 6
0.23 0.88 12 95 83 F06 0.42 0.50 10 0.28 0.66 12 96 88 F07 1.82 0.38 7
0.23 0.84 12 96 90 F07
-1.88 0.26 5
0.17 0.24 12 97 83 F07 0.42 0.60 11 0.29 1.25 12 97 91 F07 0.75 0.73 8
0.22 0.85 12 98 76 F06
-1.78 0.50 7
0.23 0.73 12 98 82 F07 0.75 0.65 7
0.29 1.25 12 98 90 F07
-1.82 0.57 6
0.22 0.43 12 99 83 F06
-0.55 0.65 12 0.28 1.26 12 99 87 F07 0.70 0.47 7
0.17 0.42 12 100 78 F06
-1.86 0.50 8
0.23 0.78 12 100 90 F07
-1.77 0.52 10 0.22 0.55 12 101 83 F06 0.40 0.44 9
0.23 0.60 3
ATTACHMENT (1)
RESULTS OF BOBBIN COIL AND MOTORIZED ROTATING PLUS POINT EXAMS FOR UNIT I NOS. 11 AND 12 STEAM GENERATORS Flaw Flaw Flaw Flaw Flaw Flaw Steam Row Column Location Location Amplitude Depth Width Length Generator Offset 2
a(Support)
(inch)
(Volts)
(%TW) (1) (inch) (2)
(inch) (2) 12 101 91 F06
-1.64 0.63 7
0.22 0.49 12 102 76 F06
-1.76 0.45 7
0.23 0.55 12 102 82 F06
-1.88 1.23 13 0.28 1.26 12 102 88 F06 1.05 0.87 9
0.22 1.22 12 103 73 F07 1.74 0.38 5
0.17 0.54 12 103 79 F07 1.78 0.62 10 0.23 1.07 12 103 79 F06
-0.79 0.62 10 0.29 0.83 12 103 81 F07 1.74 0.61 12 0.29 1.23 12 103 83 F06 0.45 0.68 13 0.23 0.83 12 103 89 F07 0.76 0.49 9
0.17 0.78 12 103 91 F06
-1.69 0.38 7
0.22 0.62 12 104 72 F06
-1.89 0.43 7
0.17 0.54 12 104 76 F06
-1.59 0.42 8
0.23 0.47 12 104 78 F07 0.83 0.62 10 0.17 0.59 12 104 80 F06
-1.78 0.48 7
0.17 1.26 12 104 88 F07
-1.87 0.51 9
0.17 0.84 12 104 90 F07
-1.84 0.94 10 0.22 1.16 12 105 83 F07
-0.53 0.75 14 0.29 1.07 12 105 83 F06
-0.57 0.79 14 0.34 1.19 12 105 87 F07 0.61 0.93 10 0.17 0.65 12 105 89 F07 0.83 2.43 22 0.28 1.33 12 105 91 F06
-1.58 0.61 7
0.22 0.43 12 105 93 F07 0.90 0.74 8
0.11 0.24 12 106 76 F07 0.73 0.75 10 0.23 1.14 12 106 78 F07 0.75 0.50 7
0.17 0.30 12 106 82 F06
-1.82 0.72 8
0.23 1.01 12 107 77 F06
-0.72 0.50 9
0.29 0.90 12 107 83 F06 0.47 0.85 15 0.34 1.01 12 107 83 F07
-0.59 0.37 7
0.17 0.42 12 107 85 F07
-1.29 0.70 12 0.29 1.31 12 107 89 F07 0.74 0.58 8
0.28 0.84 12 108 82 F07 0.74 0.61 11 0.23 1.07 12 108 82 F06
-1.76 0.74 13 0.29 0.95 12 108 86 F05
-1.23 0.88 12 0.28 1.33 12 108 88 F06
-0.81 0.54 10 0.17 0.98 12 109 79 F06
-0.87 0.57 8
0.29 0.83 12 109 83 F06 0.45 0.31 6
0.23 0.60 12 109 89 F07 0.69 1.28 13 0.28 1.14 12 110 78 F07 0.79 0.39 6
0.23 0.36 12 110 86 F06
-0.71 1.58 16 0.28 1.33 12 110 86 F07 1.78 0.68 8
0.28 0.36 12 110 88 F07 1.86 0.83 9
0.23 0.72 12 110 92 F06
-0.78 0.72 8
0.17 0.65 4
ATTACHMENT (1)
RESULTS OF BOBBIN COIL AND MOTORIZED ROTATING PLUS POINT EXAMS FOR UNIT 1 NOS. 11 AND 12 STEAM GENERATORS Flaw Flaw Flaw Flaw Flaw Flaw Geeat Row Column Location Locseton Amplitude Depth Width Length Gnrtr(support)
Ofst (Volts) ()
(%TW) ()(inch)
(2)
(inch) (2)
(in c h )
12 111 87 F07 0.65 0.56 8
0.29 0.65 12 111 89 F07 1.21 1.36 20 0.28 1.39 12 112 90 F05 1.62 0.73 8
0.16 0.69 12 113 83 F06 0.51 0.35 7
0.23 0.84 12 114 76 F06
-1.70 0.24 4
0.17 0.24 12 114 80 F06
-1.67 0.35 8
0.23 1.19 12 115 83 F06 0.51 0.34 7
0.23 0.66 12 115 87 F07 0.72 0.58 8
0.23 0.60 12 116 84 F06
-0.85 0.47 9
0.23 1.20 12 116 86 F07 1.70 0.48 9
0.17 0.66 12 116 86 F06
-0.70 0.42 8
0.17 0.84 12 116 88 F06
-0.77 0.49 7
0.22 0.67 12 117 89 F07 0.71 0.85 9
0.28 1.02 12 120 84 F06
-0.76 0.31 6
0.23 0.96 12 121 85 F06
-1.88 1.12 12 0.28 1.26 12 121 87 F07 0.71 0.58 6
0.23 0.77 12 123 87 F07 0.79 0.45 7
0.23 0.77 (2) 2)
Bobbin Probe Measurement Rotating Probe Measurement 5