ML20073D662

Forwards Results of Steam Generator Inservice Insp Performed During Second Refueling Outage,Consisting of Table Listing Tubes Plugged in Steam Generators A,B,C & D

ML20073D662
Person / Time
Site:	Braidwood
Issue date:	04/22/1991
From:	Checca A COMMONWEALTH EDISON CO.
To:	Davis A NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
References
NUDOCS 9104290166
Download: ML20073D662 (4)

Text

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h: L Ccmmenwealth Ediscn C di1400 opus Place

= C' Downses Groveilllinoia 60515 ' _q TApril 22,1991

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Mr. A. Bert Davis Regional Administrator U.S. Nuclear Regulatory Commission 799 Roosevelt Road Rill Glen Ellyn,-ll 60137-

Subject:

Braidwood Station Unit 1

.Second Refueling Outage ,

Steam Generator Inservice Inspection.Results

>,_ t NRC'DochemotSO 456

Reference:

(a) NUREG 1276, Technical Specification

Dear Mr. Davls:

= 1 The' steam generator eddy current surveillance BwVS 4.5.01 was completed 3 on April 9,1991. Braidwood Technical Specification 4.4.5.5.a states that a Special .

i Report of steam generator inservice inspection (ISI) results be prepared and submitted-to the commission, pursuant to specification 6.9.2 within 15 days following completion of examinations, According!y, Attachment A provides a summary of the number of .

n tubes plugged in each steam generator based on the ISI results.; Attachment B is a summary _of tubes plugged to date. This information is being provided in_accordance i s with the Technical Specification. requirements.

Please direct any questions regarding this submittal to this' office. .

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- Very Truly Yours,; ,

&f" Allen R. Checca

' Nuclear Licensing Administrator.

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ATTACMMENT A air 02 PLU3GIMS LfRT ETEAM GENERATOR A ROW COL IND LOC RPC IND 10 05 dim 3-H SAI 16 07 18% 3-H MAI 17 35 '25X 3-H SAI 24 48 dis 3-H SAI 08 52 68% 3-H MAI 39 64 DI* 3-H SAI 11 108 DIa 3-H SAI 01 42 SAI 11-H SAI 43 59 43% AV1 46 59 46% AV2 18 35 NDD TUBE WAS MISTAKENLY PLUGGED A TOTAL 7 TUBES SHOWED AXIAL INDICATIONS AT 3-H STEAM GENERATOR R ROW COL IND LOC. RPC IND 46 59 42% AV2 41% AV3 12 5 TUBE PLUGGED AFTER INSTALLING CABLE DAMPENER IN ACCORDANCE WITH NRC BULLETIN 88-02 No TUBES SHOWED AXIAL INDICATIONS

4 ATTACMMEXT E TUBES PLUGGED TOTAL TUBES:

STEAM GENERATOR THIS OUTAGE PLUGGED TO DATE 1RC01BA 10 '

1 MISPLUGGED 11 TOTAL 20 1RC01BB 1 1 CABLE DAMPENER 2 TOTAL- 4 1RC01BC 19 27 1RC01BD 4 5 i

1

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ETEAM GENERATOR C R0W COL IND LOC RPC IND 13 10 62% 3-H SAI 23 13 53% 3-H SAI 32 16 37% 3-H SAI 29 17 86% 3-H SAI 33 19 43% 3-H SAI 44 43 dim 3-H SAI 46 47 dis 3-H SAI 38 51 dim 3-H, SAI 39 51 dim 3-H SAI 39 53 dim 3-H- SAI 40 53 dim 3-H SAI 39 61 dis 3-H SAI 39 70- dis 3-H SAI 46 70 DI* 3-H SAI 23 90 din 3-H SAI' 30 95 77% 3-H- SAI 32 27 74% 3-H heI 58% 5-H SAI 28 76 60% 5-H SAI 46 59 42% AV1 A TOTAL OF 17 TUBES SHOWED AXIAL INDICATIONS AT 3-H A TOTAL OF 2 TUBES SHOWED AXIAL INDICATIONS AT 3-H ETEAM GENERATOR EL ROW COL IND LOC RPC IND 32 20 59% 3-H SAI 33 25 39% 3-H SAI 34 25 dim 3-H 'J-H 46 33 din 3-H SAI A TOTAL OF 4 TUBES SHOWED AXIAL.I),= ?. CATIONS AT 3-H a DI IS A DISTORTED INDICATION SAI INDICATES A SINGLE AXIAL INDICATION FOUND WITH RPC MAI INDICATES MULTIPLE AXIAL INDICATIONS

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