ML20151U636

PNO-77-087:on 770515,licensee Identified Two Failed Fuel Bundles with Parts of Fuel Rods Missing.Pieces Found Resting on Top of Adjacent Fuel Bundle.Licensee Developing Procedure for Recovery of Pieces on Top of Core.No Press Release Made

ML20151U636
Person / Time
Site:	La Crosse File:Dairyland Power Cooperative icon.png
Issue date:	05/19/1977
From:	Nolan F, Sniezek J, Thornburg H NRC OFFICE OF INSPECTION & ENFORCEMENT (IE)
To:
References
PNO-77-087, PNO-77-87, NUDOCS 9809110090
Download: ML20151U636 (1)

Text

. - - - ..

}) Q gynte ) W$

l'RELIMINARY NOTIFICATION .

,, May 19, 1977 PRELIMINARY NOTIFICATION OF EVENT OR UNUSUAL OCCURRENCE--FNO-77-87 This preliminary notification constitutes EARLY notice of an event of POSSIBLE safety or public interest significance. The information presented is as initially received without verification or evalultion and is basically all that is known by IE staff on this date.

,y - ' .

' Facility: Dairyland Power Cooperative, La Crosse Boiling Wa_ar_

Reactor, (Docket No. 50-409) Genoa, Wisconsin

Subject:

FAILED FUEL On May 15, 1977, during refueling operations, the licensee identified two (2) failed fuel bundles with parts of the fuel rods missing. One Fuel Bundle. identified as SN 2-43, which was located near the center of' the core, had a six-inch piece of cladding'~ ~from an outer fuel rod missing.

The piece was later found in the spent fuel pool well. The other bundle, identified as SN 2-39 was located near the core periphery and was found to have two pieces of fuel rod cladding missing. The pieces were found resting on top of an adjacent fuel bundle. The licensee is developing a procedure for recovery of the pieces on top of the core.

1 The subject fuel is from a group of the remaining original fuel load provided by Allis Chalmers and is the stainless steel clad type. The 3 j

' Licensee has identified about ten bundles that, based on a high operating I history and core location, are considered suspect. A special catching g"

~

mechanism is being constructed to capture any additional pieces of failed - -

1 fuel pins, and will be used when removing the suspect fuel bundles from j the core. 3

! /

/

f An IE inspector is on site.

No press release is being made. Region III is contacting the state of Wisconsin. O i The Region III (Chicago) office received notification of this occur-2' l

rence by telephone from the onsite inspector at 12:45 p.m. , on May 18, j 1977. -

{

, i

Contact:

FJNolan IE x27451 JHSniezek, IE x27451 HDThornburg, IE x27265 I Distribution: TransmittedHSt// O Chairman Rowden C. C. Yammerer, CA G. F. Murphy, JCAE Commissioner Kennedy S. J. Chilk, SECY H. H. Whiteside, SCNR Commissioner Gilinsky H. R. Myers, HCEL  ;

, Transmitted: HNBBMfd/ P Bldg ht/O SS3rds///o L. V. Gossi2k, EDO E. G. Case, NRR C. V. Smith, NMSS

, .j t y S. H . Hana ler, EDO

$l J. A. Harris, PA W. G. Mcdonald, MIPC Luge (MAIL) IE R. G. Ryan, OSP T. J. McTiernan, 01A E.Volgenau,ff/7 Regiof g [ )

H. K. Shapar, ELD l 9909110090 PDR IsnE 770519 ~"*-~~ "^~~~~~'~'""

PNO-77-Oe7 PDR 1