2CAN049404, Forwards Rept of Steam Generator Tubes Plugged as Result of ISI on 940408

Forwards Rept of Steam Generator Tubes Plugged as Result of ISI on 940408

ML20065N465
Person / Time
Site:	Arkansas Nuclear
Issue date:	04/22/1994
From:	Mims D ENTERGY OPERATIONS, INC.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
2CAN049404, 2CAN49404, NUDOCS 9404270172
Download: ML20065N465 (10)

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#                U. S. Nuclear Regulatory Commission Document Control Desk Mail Station PI-137 Washington, DC 20555

Subject:

Arkansas Nuclear One - Unit 2 Docket No 50-368-License No. NPF-6 2R10 Plugged or Sleeved Steam Generator Tubes Report Gentlemen: ,

                ' Arkansas Nuclear.One, Unit 2 (ANO-2) Technical Specification (TS) 4.4.5.5.a requires the number of tubes plugged or sleeved in each steam generator to be reported to the Comadssion within 15 days following each inservice inspection of the steam generators. The purpose'of this submittal is to complete the reporting requirements of TS 4.4.5.5.a for the ANO-2 tenth refueling outage (2R10). . Entergy Operations completed the inservice inspection of the steam -

generator tubes on April 8,1994. The scope of the inservice inspection was 100% full length with the bobbin probe in both steam generators. In' addition, a motorized rotating pancake coil (MRPC)' was utilized to inspect 100% of the top of the' tubesheet on the hot leg side and 20% of the' top of tubesheet on the. cold leg side of both steam generators. The cold' leg MRPC inspection was concentrated in the sludge pile region. 100% of the sleeves in both steam generators were also inspected using a rotating crosswound probe, as' well as 20% of the tube dents, distributed between the steam generators, using MRPC.

               . In 2E-24A (steam generator "A"),'170 tubes were plugged.' In 2E-24B (steam generator:
                 "B"),77 tubes were plugged. No tubes were sleeved in either steam generator. Tables 1 and 2 provide information concerning the plugged tubes for.the "A" and "B" steam generators,.

respectively. This information includes a tabulation .of the repaired tubes, typez ofi indicatien(s), and the location of the indication (s) within the tubes. Additional information on the inspections was provided in letter 2CA'N049403, dated ' April 12, 1994. That submittal was the required Special Report for Category C-3 results' of the^ inspection. The complete results of the . steam ' generator tube inservice inspection will be'. 94042'70172 940422 i PDR- ADOCK 05000368~ -

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 ?j. -'   U.S.NRC' April 22,1994 2CAN049404 Page 2 provided in the annual report by March 1,1995, as required by ANO-2 TSs 4.4.5.5.b and 6.9.1.5.b.

Very truly yours, dedc;7%1 Dwight C. Mims Director, Licensing DCM/jjd Attachment cc: Mr. Leonard L Callan Regional Administrator U. S. Nuclear Regulatory Commission Region IV 611 Ryan Plaza Drive, Suite 400 Arlington, TX 76011-8064 NRC Senior Resident Inspector Arkansas Nuclear One - ANO-1 & 2 Number 1, Nuclear Plant Road - Russellville, AR 72801 Mr. George Kalman NRR Project Manager Region IV/ANO-1 l U. S. Nuclear Regulatory Commission NRR Mail Stop 13-H-3 One White Flint North 11555 Rockville Pike Rockville, MD 20852 Mr. Thomas W. Alexion NRR Project Manager, Region IV/ANO-2 j U. S. Nuclear Regulatory Commission NRR Mail Stop 13-H-3 One White Flint North 11555 Rockville Pike Rockville, MD 20852

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2CAN049404 Page 1 of 8 TABLE 1 LOCATION OF DEFECTS IN TIIE "A" STEAM ' GENERATOR - SG ROW COL INDICATION LOCATION. A 4 152 NQI : 03H + 0.5 A 6 110 SCI TSH + '0.1 A 7 21 NQI 06H - + - 0.3 . - ~ A 8 34 SCI TSH + 0.1 i A 8 40 SCI TSH + '0.1 A 9 55 ODI- TSH. + 0.11 , A 10- 146 DSI OlH + 0.9 A 12 26 ODI TSH + 0.1

• A '12 30 SCI TSH + 0.1

                                      .A        13       29              SCI            TSH        + 0.1 A       13      145              SCI             TSH       + '0.2-

~ A 15 29 MCI TSH - + - 0.1 - A- .16 150 ODI TSH' + 0.1 >

                                       'A       17       29              SCI             TSH + 0.1 A       17       31              SCI             TSH + .0.1                                >

A 17 139 MCI TSH :+ 0.1-A 19- 53 SCI ~TSH- +. 0.1 A 19 109 DSI OlH + 0.6 . . A 20- 124 DSI . .OlH + 0.8 A 20 138 ' SCI TSH + 0.1 -

                                       -A      20       150              SCI             TSH       +       0.1 A      21        19'             SCI             TSH       +       0.0 A      21        29              SCI             TSH '+ -0.1                             o A     .21       137              SCI             TSH .+            0.1                   .a A      22        54'             SCI             TSH. +            0.1                     -

MCI

                                       -A      22       114                             ~TSH       +       0.1 A      22       146             DSI              07H       + ' O.7

• A 22 150 ' SCI TSH + ' O.1, A 23 39 SCI TSH~ + 0.1 A 24 130 SCI TSH :+ 0.1 A 24. 132 SCI' TSH- +

0,1' A ~5 2 133 SCI TSH +- 0,1' , 4 A 26- 40 ODI TSH + 0.0  ! A- 27 37 SCI: TSH. + - 0.1-A- 28 134. ODI . TSH - +1. 0.0 -

                                                                                                                                 -.c A      29-       39            ' SCI             TSH' +            0.1

, A- 30 128 ODI- TSH- +- 0.1 I i

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Attachment to 2CAN049404 Page 2 of 8 TABLE 1 (con't) LOCATION OF DEFECTS IN THE "A" STEAM GENERATOR SG ROW COL INDICATION LOCATION A 31 39 SCI TSH + 0.1 A 31 43 SCI TSH. + 0.1 A 32 40 SCI TSH + 0.1 A 32 42 SCI TSH + 0.0 A 32 122 SCI TSH + 0.0 A. 32 126 SCI TSH + 0.1 A 33 43 SCI TSH + 0.1 ' A 33 53 SCI TSH + 0.1 A 33 53 42 02H + 0.4 A 33 123 SCI TSH + 0.2 A 33 125 SCI TSH + 0.1 A 34 48 SCI TSH + 0.0 A 34 58 SCI TSH + 0.1 A 35 41 SCI TSH + 0.1 A 35 53 SCI TSII + 0.1 A 36 42 SCI TSH- + 0.1 A 36 128 SCI TSH- + 0.1 A 37 35 SCI TSH + 0.0 A 37 43 SCI TSH + 0.1 A 38 36 SCI TSH' + 0.1 A 38 38 SCI TSH + 0.1 A 38 40 SCI TSH + 0.1 A 38 42 SCI TSH + 0,1 A 38 44 SCI TSH + 0.1 A 39 83 56 BW1 + 1.1 A 41 111 ODI TSH + 0.0 A 44 118 SCI TSH + 01 A 46 42 SCI TSH + 0.1 A 48 48 SCI TSH + 0.1 A 48 50 SCI TSH + 0.1 A 48 120 SCI TSH + 0.1 A 49 41 SCI TSH + 0.1 A 49- 107 SCI TSH + 0.0 ) A 50 68 DSI OlH + 0.5 A 50 98 NQI OlH + 0.6 A 50 144 SCI TSH + 0.1 . A 51 43 SCI TSH + 0.1 A 51 113 SCI TSH + 0.1

Attachment to 2CAN049404 Page 3 of 8 TABLE 1 (con't) LOCATION OF DEFECTS IN THE "A" STEAM GENERATOR SO ROW COL INDICATION LOCATION A 51 115 SCI TSH + 0.0 A 52 104 SCI TSH + 0.1 A 52 120 MCI TSH + 0.1 A 54 64 SCI TSH + 0.1 A 54 106 SCI TSH + 0.1 A 55 105 SCI TSH + 0.1 A 57 63 MCI TSH + 0.1 A 58 54 SCI TSH + 0.1 A 58 66 SCI TSH + 0.1 A 59 55 SCI TSH + 0.1 A 59 113 SCI TSH + 0.1 A 59 115 SCI TSH + 0.1 A 61 133 SCI TSH + 0.0 A 62 60 SCI TSH + 0.0 A 62 82 SCI TSH + 0.1 A 63 63 SCI TSH. + 0.1 A 63 79 ODI TSH + 0.1 A 63 137 SCI TSH + 0.1 A 64 60 SCI TSH + 0.1 A 65 61 SCI TSH + 0.1 A 65 107 SCI TSH + 0.1 A 65 109 SCI TSH + 0.1 A 66 60 SCI TSH + 0.1-A 66 110 SCI TSH + 0.1 A 67 61 MCI TSH + 0.0 A 67 65 SCI TSH + 0.1 A 67 107 SCI TSH + 0.1 A 68 66 MCI TSH t 0.1 A 68 104 SCI TSH 4 0.1 A 69 81 ODI TSH + 0.1 A 70 106 SCI TSH + 0.2 A 71 35 SCI TSH + 0.1 A 71 103 SCI TSH + 0.1 A 71 111 SCI TSH + 0.1-A 73 41 SCI TSH + 0.0 A 74 36 SCI TSH + 0.1 A 75 37 SCI TSH + 0.) A 75 79 SCI TSH + 0.1

Attachment to 2CAN049404 Page 4 of 8 TAllLE 1 (con't) LOCATION OF DEFECTS IN TIIE "A" STEAM GENERATOR l SG ROW COL INDICATION - LOCATION A 75 81 SCI TSH + 0.1 A 75 133 SCI TSH + 0.1 A 76 36 SCI TSH + 0.1 A 76 130 SCI TSH + 0.1 A 77 129 SCI TSH + 0.1 A 77 131 MCI TSH- + 0.1 A 78 80 SCI TSH + 0.1 A 79 127 SCI TSH + 0.1 A 82 82 SCI TSH + ( .1 A 84 84 SCI TSH + 0.1 A 87 125 SCI TSH + 0.1 A 88 44 SCI TSH + 0.0 A 89 125 SCI TSH + 0.1 A 90 124 SCI TSH + 0.0 A 91 85 ODI TSH + 0.2 A 93 85 MCI TSH + 0.0 A 94 84 MCI TSH + 0.1 A 95 115 SCI TSH + 0.1 A 96 52 SCI TSH + 0.0 A 96 86 ODI TSH + 0.1 A 97 45 SCI TSH + 0.2 A 97 51 SCI TSH + 0.1 A 97 79 SCI TSH + 0.1 A 97 83 SCI TSH + 0.1 A 98 56 ODI TSH + 0.0 A 98 118 SCI TSH + 0.1 A 99 55 SCI TSH + 0.0 A 100 84 SCI TSH + . 0.1 A 102 78 SCI TSH + 0.1 A. 102 86 SCI TSH + 0.1 A 102 92 SCI TSH + 0.2 A 102 108 MCI TSH + 0.1 A 103 61 SCI TSH + 0.1 A 103 71 ODI TSH + 0.1 A 103 77 SCI TSH + ' O.0 A 103 81 SCI TSH + 0.1 A 103 83 SCI TSH + 0.1 A 103 85 SCI TSII + 0.1

r - _ _ - - - . - - . . -- -- - - - - - - - - - - - - - E ' Attachment to 2CAN049404 Page 5 of 8 TABLE 1 (con't) LOCATION OF DEFECTS IN TiiE "A" STEAM GENERATOR SG ROW COL INDICATION LOCATION A 103 87 SCI TSH + 0.0 A 104 74 SCI TSII + 0.1 A 104 76 SCI TSH + 0.1 A 104 84 MCI TSH + 0.1 A 105 65 SCI TSII + 0.1 A 105 75 SCI TSH + 0.2 A 105 87 SCI TSH + 0.0 A 105 109 SCI TSH + 0.2 A 106 60 SCI TSH + 0.1 A 106 60 NQI BW2 - 0.6 A 107 61 SCI TSH + 0.1 A 107 83 SCI TSH + 0.1 A 107 85 SCI TSH + 0.2 A 108 70 SCI TSH + 0.1 A 108 96 SCI TSH + 0.1 A 108 102 SCI TSH + 0.0 A 111 73 SCI TSII + 0.0 A 111 75 SCI TSH + 0.1 . A 111 107 SCI TSH + 0.1 , A I12 92 SCI TSII + 0.1 l A 138 80 75 BW5 + 0.1 LEGEND BWX iY = AN INDICATION Y INCHES ABOVE/BELOW CENTER OF TIIE Xth BATWING SUPPORT TSIIi Y = AN INDICATION Y INCIIES ABOVE/BELOW TIIE TOP OF THE HOT LEG TUBESHEET l OXII Y= AN INDICATION Y INCIIES ABOVE/BELOW THE CENTER OF THE Xth HOT LEG SUPPORT XX = AN INDICATION'S TIIROUGIlWALL PERCENTAGE DSI = DISTORTED SUPPORT INDICATION ODI = OUTSIDE DIAMETER INDICATION SCI = MCI = SINGLE CIRCUMFERENTIAL INDICATION j MULTIPLE CIRCUMFERENTIAL INDICATION NQI =

                                                               'NON-QUANTIFIABLE INDICATION

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Attachment to 2CAN049404 Page 6 of 8 TABLE 2 LOCATION OF DEFECTS IN THE "B" STEAM GENERATOR SG ROW COL INDICATION' LOCATION B 4 136 DSI 03H + 0.7 B 5 141 79 OlH + 0.3 B 8 132 DSI 06H + 0.7 B 13 133 DSI OlH -

0.3

B 14 132 42 07C- -

0.5 B 15 29 DSI 03H - 0.4 B 15 111 47 06H + 0.5 B 18 150 SCI TSH + 0.1 B 18 152 SCI TSH + 0.1 B 20 18 SCI TSH + 0.1 B 20 114 SCI TSH + 0.1 B 24 146 MCI TSH + 0.1 B 25 67 DSI 02H - 0.3 B 30 34 45 03H + 0.7 B 33 111 DSI OlH + 0.5 B 33 115 SAI TSH + 0.6 B 34 56 76 BW3 + 0.1 B 36 96 DSI OlH 4 ).5 B 37 77 43 BW3 - 0.9 B 38 54 44 OlH + 0.4 B 40 44 DSI OlH + 0.2 B 40 126 SCI TSH + 0.0 B 41 143 43 BW1 + 5.5 B 42 66 SCI TSH + 0.1 B 43 135 SCI TSH + 0.1 B 47 71 NQI OlH + 0.8 B 59 51 DSI BW1 - 0.9 B 60 132 DSI 03H + 0.7 B 62 132 58 02H + 0.3 B 63 59 70 OlH - 0.4 B 63 71 DSI 04H + 0.5 B 64 92 DSI OlH - 0.6 B 64 112 DSI 02H + 0.2 B 65 93 63 OlH - 0.8 B ~65 157 78 BW5 -

                                                                    - 0.9 B     66      60-         46     08C  +    0.4  !

B D 82 70 OlH + 0.6 B 69 103 DSI OlH + 0.7  :

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Attachment to 2CAN049404 - Page 7 of 8 TABLE 2 (con't) LOCATION OF DEFECTS IN TIIE "B" STEAM GENERATOR SG ROW COL INDICATION LOCATION B 69 107 ODI TSH + 0.0 B 71 55 SCI TSH + 0.1 B 74 68 DSI 03H + 0.5 B 75 69 DSI 04H + 0.0 B 77 55 DSI BW1 - 0.8 B 77 97 DSI OlH + 0.8 B 78 16 DSI BW1 - 0.8 B 80 80 74 OlH + 0.4 B 82 56 47 BW3 - 0.6 B 83 95 SCI TSH + 0.1 B 89 21 DSI BW4- - 0.6 B 89 45 52 05H + 0.6 B 90 50 ODI TSH + 0.1 B 93 121 SCI TSH + 0.1 B 94 116 SCI TSH + 0.1 B 96 100 50 BW2 - 0.1 B 97 115 SCI TSH + 0.1 B 98 50 SCI TSH + 0.1 B 98 86 DSI BW3 - 10 B 99 53 ODI TS'H + 0.0 B 99 101 ODI TSH + 0.0 B 101 53 SCI TSH + 0.1 B 102 62 SCI TSH + 0.1 B 103 123 51 02H + 0.6 B 104 70 SCI TSH + 0.1 B 106 84 SCI TSH + 0.1 B 106 98 SCI TSH + 0.1-B 106 112 NQI 02H - 0.1 B 107 83 SCI TSH + 0.1 B 107 85 SCI TSH + - 0.1 B 108 90 44 BW3 -- 0.9 B 108 136 DSI 10H +- 1.6 B 110 96 SCI TSH + - 0.1 B 114 72 SCI TSH + 0,1 B 118 96 41 BW2 + 0.9 B 129 101 50 BW5 - 1.0 B 132 74 60 02H + 0.6 B 139 79 59 BW1 - 0.2 I

U . c: Attachment to 2CAN049404 Page 8 of 8

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TABLE 2 (con't) LOCATION OF DEFECTS IN TIIE "B" STEAM GENERATOR SG ROW COL INDICATION LOCATION D 139 79 53 BW1 + 0.6 B 139 81 43 BW1 - 0.9 LEGEND BWX iY = AN INDICATION Y INCHES ABOVE/BELOW THE CENTER OF THE Xth BATWING SUPPORT TSHi Y = AN INDICATION Y INCHES ABOVE/BELOW THE TOP OF THE HOT LEG TUBESHEET OXH 1 Y = AN INDICATION Y INCHES ABOVE/BELOW THE CENTER OF THE Xth HOT LEG SUPPORT OXC i Y = AN INDICATION Y INCHES ABOVE/BELOW THE CENTER OF TIIE Xth COLD LEG SUPPORT XX = AN INDICATION'S THROUGHWALL PERCENTAGE DSI = DISTORTED SUPPORT INDICATION ODI = OUTSIDE DIAMETER INDICATION SCI = SINGLE CIRCUMFERENTIAL INDICATION MCI = MULTIPLE CIRCUMFERENTIAL INDICATION

                                   =

NQI NON-QUANTIFIABLE INDICATION . SAI = SINGLE AXIALiNDICATION y}}