ML20004B405

Nonproprietary Version of Summary of Fuel Status of AR Nuclear 2 End of Cycle 1 Including Preliminary Findings.

ML20004B405
Person / Time
Site:	Arkansas Nuclear
Issue date:	05/18/1981
From:	ABB COMBUSTION ENGINEERING NUCLEAR FUEL (FORMERLY
To:
Shared Package
ML19262F535	List: ML20004B404 ML20004B405
References
CEN-164(A)-NP, NUDOCS 8105280191
Download: ML20004B405 (6)

Text

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F COMBUSTION ENGINEERING, INC.

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! A Sunpary of Fuel Status i

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of ANO-2 End of Cycle 1 t

Including Preliminary Findings i t.

1 I CEN-164(A)-NP r

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i MAY 18, 1981 4

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LEGAL NOT!CE THIS REPORT WAS PREPARED AS AN ACCOUNT OF WORK SPONSORED BY COMBUSTION ENGl JEERING, INC. NEIT HER CCMSUSTION ENGINEERING NOR ANY PERSON ACTING ON ITS BEHALF:

. A. MAKES ANY WARRANTY OR REPRESENTATION, EXPRESS OR IMPLIFD INCLUDING THE WARRANTIES OF FITNESS FOR A PARTICULAR PURPCSE OR MERCHANTABILITY, WITH RESPECT TO THE ACCURACY, COMPl.ETENESS. CR USE.:ULNESS OF THE INFOR.'.1ATION CCNTAINED IN THIS

- REPORT, OR THAT THE USE OF ANY INFORMATION, APPARATUS, METHOD, OR PF.OCESS DISCLCSED IN THIS REPORT MAY NOT INFRINGE PRIVATELY OWNED RIGHTS;OR B. ASSUMES ANY LIABILITIES WITH RESPECT TO THE USE OF,OR FOR DAMAGES RESULTING FROa1 THE USE OF, ANY INFORMATION, APPARATUS, METHOD OR PRCCESS DISCLOSED IN THiS REPORT. .

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SUMMARY

OF FUEL STATUS AT ANO-Il EOC-1 INCLUDlNG-PRELTMINARY FTP10lNGS 1.0 Preliminary Results of The Assembly Visual Inspection Program A total of assemblies were visually inspected on all 4 faces by periscope or TV including ( )from Batch A,[)from Batch B, and()from Batch C. Fuel rod bow was minimal and consistent with similar observations in 14 x 14 fuel assemblies.

Ample shoulder gap remained in the assemblies to accommodate growth with

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continued operation. Limited fuel assembly bow measurements [

indicated a maximum of ,

consistent with expectations.

J 2.0 -Preliminary Results of The CEA Guide Tube Surveillance Procram A TV scan of the top of the core prior to fuel shuffling revealed no f

anomalies.

f Eddy current testing of( sleeved assemblies showed no detectable evidence of sleeve wear in guide tubes examined.

A total of[)CEA's were eddy current tested for evidence of wear due

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to interaction between the CEA's and -

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The maximum wear observed was equivalent to _

consistent with similar measurements on CEA's from 14 x 14 reactors after one operating cycle. This is well bel'ow any limits on continued CEA operation.

j 3.0 ANO-II SIPPING / RECONSTITUTION CAMPAIGN STA~US AND

SUMMARY

Summary l-l l

Fuel shuffling and sipping began on April 19, 1981. Sipping of all 177 fuel assemblies in the core was completed on May 1,1981.

A total of seven-t.

l (7) assemblies were identified as containing 1 or more perforated fuel rods.

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These assemblies included: 2 from lutch A (.*S.7 and'A037); 3 fro;n Satch B (8045,-B036, BT02); and 2 from Batch C (C203 anj C308). Using the reconstitut-able feature of the C-E fuel assemblies, the' Batch 8 and C bundles were taken apart, all rods were eddy current, tested and the leaking rods purged from each.

Resipping of the assemblies after reconstitution indica:ed that the leaking rods were successfully purged from the 5 Batch B and C ast.emblies that are intended for use in Cycle 2.,

Details The Batch B and C assemblies were visually examined by periscope and then

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a campaign was initiated to identify and remove the leaking rods from each since these bundles were intendca for use in Cycle 2. Visual inspection of asse5blies B036, BT02, and C203 did not reveal any Visual inspection of 3045 showed i

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_J The upper end fittings from each of the leaking Batch B and C assemblies were then removed and every rod was extracted from each structure and eddy current tested to identify perforated rods. This inspection revealed a total of perforated fuel rcds including:

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r. bf sound fuel rods, some showing

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- were also left out of the five assemblies. This practice was adopted at the site in order to

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All fuel rods left out were replaced with fuel rods

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l from a sound _ Batch A assembly-(A006;'.in accordance with guidelines for pin

'~ 5 placement' established by Core Physics. '

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m All. Rods from B055 and C308 were placed in '

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, All 'five of the reconstituted assemblies were resipped following -

. recons ti tution. The results indicated that all leaking fuel rods had been.

-successfully_ removed The entire reconstitution program was completed on May 10, 1981.

In the near future,.weintend to inspect the .

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in an effort to-

. further our understanding of the cause of the leaking fuel rods .at ANO-2.

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