ML20134K008

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Fuel Assembly Insp Program
ML20134K008
Person / Time
Site: Diablo Canyon Pacific Gas & Electric icon.png
Issue date: 10/11/1996
From: Colburn D, Desiree Davis, Halligan J
WESTINGHOUSE ELECTRIC COMPANY, DIV OF CBS CORP.
To:
Shared Package
ML17062B149 List:
References
PPE-96-245, NUDOCS 9611180189
Download: ML20134K008 (26)
v • d • e


Text

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Westinghous2 hoprieiary Class 3 4

Diablo Canyon 2 Fuel Assembly inspection Program Contributors:

D. J. Colburn D. D. Davis J. R. Halligan T. R. Freeman l H. Kunishi October 11,1996 Inspection work was conducted at Diablo Canyon 2 by an NSD crew under the direction of PPE contract engineer Jim Kisak. Responsibility for the reduction and l verification of individual portions of the inspection program was assigned to various PPE engineers. Their signatures on this document attest that (1) they have

' independently verified the sections assigned to them; and (2) they concur with the results documented herein. A listing of the individual data reduction and verification assignments is given below:

Insnection Program Section Originating Engineer Yerifving Engineer 1.0 Background & Objectives D. Colburn J. Halligan I 2.0 Guide Thimble Plug Gage Exams D. Colburn J. Halligan 3.0 F/A Length Measurements H. Kunishi T. Freeman 4.0 Fuel Rod Growth Data H. Kunishi T. Freeman 5.0 Overall Summary D. Colburn - D. Davis Signatures On File D. J. Colburn D. D. Davis Product Performance Engineering Product Performance Engineering H. Kunishi T. Freeman Product Performance Engineering Product Performance Engineering 0

J. R. Halligan Product Performance Engineering 9611100189 961016 PDR TOPRP EH B -

ppe-96-249,c11 ppe-96-245

Wxtinghotto Propriet:ty Class 3 ,

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l 1.0 Background and Objectives An RCCA insertion anomaly was experienced at Wolf Creek and South Texas Unit 1.

During trips, several RCCAs did not fully insert. Wolf Creek conducted cold drop tests after the event and additional RCCAs did not fully insert. A subsequent ";

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The following tests were conducted during the inspection program:

l (1) Guide Thimble Plug Gage Exams (Single Tube Probe Tests); )

(2) Fuel Assembly Length Measurements; and (3) Fuel Rod-to-Nozzle Gap Measurements.

I Fuel assembly length measurements and fuel rod-to-nozzle gap measurements were needed to determine if the growth of the fuel assemblies and fuel rods was within the anticipated range.

2.0 Single Tube Probe a,b,c Ppe-96-249,c11 ppo.96-245

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3.0 Fuel Assembly Growth Data i

Fuel assembly length measurements were performed on 16 assemblies (11 assembies i

_from Region T,2 assemblies from Region U and 3 assemblies frorn Region S). The ,a,3,e f 1 i

l Figure 3.1: Recent Fuel Assembly Growth Data a,b,e a

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ppe-96-249,c11 ppe-90-245

Wistinghouss Proprietary Class 3 4.0 Fuel Rod Growth Data l l

The axial gaps between the peripheral rods and the assembly nozzles were measured  !

from the low magnification TV tapes of 16 Diablo Canyon 2 assemblies to determine  !

fuel rod growth. The assemblies were SO1, S65H, S68H, T13, T14, T15, T21, T23, l T27, T35, T39, T41, T78H, T80H, U77H AND U84H.

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W:stinghous2 Propriet3y Class 3 5.0 Summary a,b,e

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4 Westinghouss Proprietary Class 3 Appendix A Diablo Canyon 2 Assembly Growth Data a , b, c, i

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W:stinghous Propriet:ry Class 3

.i Appendix B l Fuel Rod Growth Data

, for Diablo Canyon 2 ppe-96-249,c11 ppe-96-245

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I 2 s Ndvember 5,1996 I The attached memo NSD-NRC 96-4846 was previously delivered on October 21 by Sumit Ray of Westinghouse Electric Corporation. At that time, only the proprietary version was received by the NRC. Attached is the non-4 Proprietary version of the Westinghouse preliminary report on Incomplete Rod Cluster Control Assembly (RCCA)

- Insertion.

Also attached is a page which was inadvertently omitted from the Proprietary version. Ten copies of this page is included to be inserted into the ten copies already sent to the Document Control Room. The placement is noted by

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the blue tab indicated in the first copy of the non-proprietary version.

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