ML20206Q852

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Submits Rept on Numbers of Tubes Plugged or Repaired During SG Inservice Insp Activities Conducted During Plant Seventh Refueling outage,A2R07,per TS 5.6.9
ML20206Q852
Person / Time
Site: Braidwood Constellation icon.png
Issue date: 05/13/1999
From: Tulon T
COMMONWEALTH EDISON CO.
To:
NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
NUDOCS 9905190243
Download: ML20206Q852 (3)


Text

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[, , Q>mmonwealth f.diwn G>mpany e Braidwood Generating Station Route al, Dox 81 11raceville, IL NH07%19 Tel H15-4W2801 May 13,1999 U. S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, DC 20555-0001 Braidwood Station, Unit 2 Facility Operating License No. NPF-77 NRC Docket No. STN 50-457

Subject:

Steam Generator Tube inspection Report from Braidwood Station Unit 2 Refueling Outage inspections in accordance with Technical Specification 5.6.9, " Steam Generator (SG) Tube inspection Reports," we are reporting the numbers of tubes plugged or repaired during i the SG inservice inspection activities conducted during the Braidwood Station Unit 2 {

seventh refueling outage (i.e., A2RO7). Technical Specification 5.6.9.a requires that following each inservice inspection of SG tubes, the number of tubes plugged or repaired in each SG shall be reported to the NRC within 15 days. The purpose of this letter is to provide the requisite SG Tube inspection Report for Braidwood Station Unit 2.

During the A2RO7 refueling outage, which began on April 24,1999, eddy current @l inspections of the SG tubes were conducted. The following inspections were performed:

. 100% Full Length Bobbin; '

+ 25% Row 1 and 2 U-Bends, Plus Point Probe;

  • 25% Hot Leg Top of Tubesheet, Plus Point Probe; i e 25% of Hot Leg Dents and Dings > 5.0 Volts, Plus Point Probe; and a 20% Preheater Expansions in 2C SG, Plus Point Probe.

The SG tube plugging was completed on May 5,1999. The Attachment summarizes the SG tube plugging results. No SG tubes were repaired by sleeving during the A2RO7 refueling outage.

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9905190243 990513 PDR ADOCK 05000457 P PDR A Unicom O>mpany L

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l~~ . May 13,1999 -

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- U. S. Nuclear Regulatory Commission Page 2 l Please direct any questions regarding this submittal to Mr. T. W. Simpkin, Braidwood l Regulatory Assurance Manager, at (815) 458-2801 extension 2980.

Sincerely, i Ti by J. Tulon Vice President Braidwood Station acmeo2w=

Attachment cc: Regional Administrator - NRC Region lli

j. NRC Senior Resident inspection - Braidwood Station 3 i

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ATTACHMENT BRAIDWOOD STATION UNIT 2 STEAM GENERATOR (SG) TUBES PLUGGED / REPAIRED

  • SG A SG B SG C SG D TOTAL SG Tubes Plugged During 35 7 39 22 103 Previous Outages SG Tubes Plugged During 0 1 4 1 6 Refueling Outage A2RO7 i

Total SG Tubes Plugged to 35 8 43 23 109 Date There have been no Braidwood Station Unit 2 SG tubes repaired by sleeving to date.

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