ML043070616

Steam Generator Tube Plugging Report 2 End of Core (EOC) 13

ML043070616
Person / Time
Site:	Catawba
Issue date:	10/21/2004
From:	Jamil D Duke Energy Corp
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
Download: ML043070616 (3)

Text

Dike D.M. JAMIL

• wPowere Vice President A Duke Energy Company Duke Power Catawba Nuclear Station 4800 Concord Rd. / CN0IVP October 21, 2004 York, SC 29745-9635 803 831 4251 803 831 3221 fax U. S. Nuclear Regulatory Commission Document Control Desk Washington, DC 20555

Subject:

Catawba Nuclear Station, Unit 2 Docket No. 50-414 Steam Generator Tube Plugging Report 2 End of Core (EOC) 13 Catawba Nuclear Station (CNS) Technical Specifications 5.6.8.a. requires the number of tubes plugged in each steam generator to be reported within 15 days following the completion of the program. The attachment provides a list of tubes removed from service by plugging and the reason for plugging.

Any questions concerning this submittal may be directed to Kay Nicholson at 803-831-3237.

Sincerely, Dhiaa M. Jamil

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W. D. Travers U. S. Nuclear Regulatory Commission Regional Administrator, Region II Atlanta Federal Center 61 Forsyth Street, SW, Suite 23T85 Atlanta, GA 30333 S. E. Peters (addressee only)

U. S Nuclear Regulatory Commission Project Manager Mail Stop 0-8 G9 Washington, D. C. 20555-0001 E. F. Guthrie U. S. Nuclear Regulatory Commission Senior Resident Inspector Catawba Nuclear Station www. dukepower. corn

Catawba Nuclear Station Steam Generator Tubes Plugged Refueling Outage EOC13, October 2004 Steam Generator 2A Tube Row Tube Column Repair Method Reason for plugging 39 41 Hot leg stabilized & mech Possible Loose Part plugged 40 41 Hot leg stabilized & mech Possible Loose Part plugged Steam Generator 2B Tube Row Tube Column Repair Method Reason for plugging 1

22 Mech Plug Indication at tube end 1

47 Mech Plug Indication at tube end 1

55 Mech Plug Indication at tube end 2

52 Mech Plug Tubesheet Tack Expansion Indication 2

57 Mech Plug Tubesheet Tack Expansion Indication 2

63 Indication at tube end 2

771 Hot leg stabilized & mech Possible Loose Part plugged 3

45 Mech Plug Tubesheet Tack Expansion Indication 3

52 Mech Plug Tubesheet Tack Expansion Indication 3

58 Mech Plug Tubesheet Tack Expansion Indication 4

52 Mech Plug Tubesheet Tack Expansion Indication 4

61 Mech Plug Indication in Tubesheet over expansion 5

12 Hot leg stabilized & mech Possible Loose Part plugged 6

12 Hot leg stabilized & mech Possible Loose Part plugged 7

71 Mech Plug Tubesheet Tack Expansion Indication 8

27 Mech Plug Indication at tube end 13 64 Mech Plug Indication at tube end 15 45 Mech Plug Tubesheet Tack Expansion Indication 17 41 Cold leg stabilized &

Possible Loose Part mech plugged 18 41 Cold leg stabilized &

Possible Loose Part mech plugged 32 44 Hot leg stabilized & mech Loose Part plugged 33 42 Hot leg stabilized & mech Loose Part plugged 33 43 Hot leg stabilized & mech Loose Part plugged 33 44 Hot leg stabilized & mech Loose Part plugged 34 43 Hot leg stabilized & mech Loose Part 34 44 Hot leg stabilized & mech Loose Part plugged 35 42 Hot leg stabilized & mech Loose Part

plugged 36 53 Mech Plug Tubesheet Tack Expansion Indication 42 45 Cold leg stabilized &

Loose Part mech plugged 42 46 Cold leg stabilized &

Loose Part mech plugged 43 91 Mech Plug LoosePart 43 92 Mech Plug Loose Part Steam Generator 2C Tube Row Tube Column Repair Method Reason for plugging 15 90 Hot leg stabilized & mech Possible Loose Part plugged 16 90 Hot leg stabilized & mech Possible Loose Part plugged 25 11 Cold leg stabilized &

Loose Part mech plugged 26 11 Cold leg stabilized &

Loose Part mech plugged 24 12 Mech Plug Potential damage from stabilizer installation error.

Steam Generator 2D Tube Row Tube Column Repair Method Reason for plugging 13 35 Hot leg stabilized & mech Possible Loose Part plugged 27 55 Mech Plug Permeability variation; potential to mask tube indication if present. Preventive measure to plug.

43 50 Mech Plug Loose Part 47 30 Hot leg stabilized & mech Possible Loose Part plugged 48 47 Cold leg stabilized &

Loose Part mech plugged 48 48 Cold leg stabilized &

Loose Part mech plugged 48 86 Hot leg stabilized & mech Possible Loose Part plugged 49 47 Cold leg stabilized &

Loose Part mech plugged 49 48 Cold leg stabilized &

Loose Part mech plugged