ML20236E554

Forwards Incident Rept for Facility Describing Events Surrounding Fall of Fuel Assembly from Fuel Preparation Machine in Spent Fuel Storage Pool

ML20236E554
Person / Time
Site:	Brunswick, 05000000
Issue date:	04/16/1976
From:	Utley E CAROLINA POWER & LIGHT CO.
To:	Moseley N NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML20236E515	List: IR 05000324/1976008 IR 05000324/1986007 IR 05000400/1985048 ML20236E512 ML20236E554 ML20236E651 ML20236E662 ML20236E681 ML20236E738 ML20236E746 ML20236E748 ML20236E752 ML20236E757 ML20236E762 ML20236E770 ML20236E775
References
FOIA-86-596, FOIA-86-793 NG-76-541, NUDOCS 8710290268
Download: ML20236E554 (22)

Text

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711st so-g serial: 30-76-541 g Mr. Normen C. Moseley, Director U. 8. hatame Regulatory Casumission Regica II, suite SIS 81 8 20 Y&'

r ,3 130 Feachtree straat N.V. q ja Achata, Georgia 30303 ,

Dear Mr. Moselays ,

REUMsWICK STEAM ELECTRIC FIANT, UNIT 5O. 2 DOCIET No. 50-324 -

LICENSE No. DPR-62 INFORMATION REPot? ON FUEL BUNDLE FALLING OUT 0F FUEL PREPARATION MACHINE In the intarast of keeping the Commission informed of plant ,

events which are not required by regulation to be reported, but are of interest to the Couanission and the nuclear industry in general, we are )

providing the attached incident report for the Brunswick Plant, which  ;

describes the events surrounding the fall of a fual assembly from the j fuel preparation nachine in the spent fuel storage pool. Tids report is l

' provided as a result of an agreement between the Brunswick Plant Superin- '

tendent and the Principal NRC Inspecte for the Brunswick Unit 2 Plant. .

Yours v.ary truly.

Crittaal Signed By E. E. UTI.Z"I E. E. Utley Vice President Bulk Power Supply ,- .

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Att**We i bee Masers. H. R. Banks E. C. Ilo11owell '

P. W. Howe -

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J. A. Jones *k

' R. B. Jones

• W. B. Kincaid '~

l D. Locklear

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L. I. Leflin .

• C. McCovern'-

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8710290260 871020 .

PDR FOIA EPTINGO6-596 PDR

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CAROLINA PC'.*IA 6 L1GHT CCCCPAFY

[ BRUNSWICK STEAM ELECTRIC PLANT I

I INCIDENT REPORT f76-11 Dates April 1, 1976 Incident Date: March 31, 1976 i

Incident

Title:

TUEL BUh*DLE 444 TALLING OUT OF TUEL PREP MACHINE Initial Conditions j j

l actor shutdown with the vessel head removed. Mode switch in .

refuel,vith fuel channel inspection in progtess. i l

l Sequence of Events At approximately 0240 on March 31, 1976, fuel bundle 444 was l

removed from the spent fuci pool storage location, using the refueling ~

bridge fuel. grapple. The bundio uns positioned over the "B" fuci prep machine and lowered into the machine. At the same time the fuel prep machine carriage was raised, the rctuei bridge operstor received " hoist  ;

loaded" light off and a "sisek cable" light on. These indications gave j the operator the opinion the fuel bundle was seated in the carrinRe. The l grapple uds opened, raised, and the bridge traversed away from the fuel  !

prep machine to a po=1Liun above the f uel pool storage racks. The refuel floor foreman again started raising the fuel prep tischine estriage upuned in order to position the fuel bundic for channel inspeettun. At this time ,

the bundio foil out of prep machine to a horizontal posi, tion across the top .

of fuel pool scornge Tschs. The refuel floor and reactor building vore evacuated and El-22 (Spent Fuel Damage) was implemented. Surveys and samples indicated no fuel damage or increased radiation. * -

, Bundle 444 vss lif ted, using slings from the jib cranes and

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"C" f hook from the overbesd crane. The bundle was stored in its designated spent fuel storage location. Bundle 444 was inspected and no visible damage was detected. The bail on bundle BR-107 was bent by bundle ex-444 when it tell. Preliminary visual inspeccion of bundles BR 166 and BR-060 ,

indicated localized scratch of crud remos ! on the bail of the bundles. No indication of deformation of the bail was detected on either bundic.; These were the only bundles that were struck or could !. ave ocen struck by the falling bundle.

Inspection of the fuel prep machir.c indicated the upper roller i' guide had separated from the fuel prop carriage. The reason the guide separated from rhe fuel prep machium appears to be caused by the fuel bundle being misalist ed in the upper guide and not properly seating the i bundle in,the prep machine.

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Correction Action l

1. The channelling /dechannelling proc 6 fures were revised to include two independent visual verifications of the fuci bundir noso piece being seated in the fuel prep machina. Also, prior to lifting any fuel bundle, two independent visual verifications vill be made of adequato latching of fuel bundio by grapple and prior to releasing a fuel bundle froc.

a fuel grapple. two independent visual verifications will be saae for proper seating, orientation'and location.

2. Refuel floor personnel were cautioned conc.ernin5 the procedure change and the necessity for visual verification of bundle saating and lif ting.

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a CRAFFLE DISENCACENDrr TROM WEL BilNDLE ~ .

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Title:

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.3 0 O '*' Taittel Conditions .. .

j.'fe ' . , Dmit 1 shutdown and cooled down with the head removed for the Core plugging . . , . .

R '.Oetage. (2he mode switch was locked in RENEL with fuel movement in progress..j i{.)

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p,,1..- @ mest b dia #si was inspected and rechsenelled per the Fuel shuffling la Fuel Prep Machlas "B". Fuel bur. die #81 was picked up with the east ;'[f ' jib?..rf. ' Bundle ,4 iij ."- #8

'" ", i ' erano and air-operated CRD grapple.

M~ maal tack Space 372 for storage. N bundle was being lined up with space

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[g.y.* 372.and lowered into place. N C1D grapple lost.sagagement with bundle #41.' .

' T .[7 fp used L ,.and the east handle and came #81,to restwhichat about was a 40'partially angle with inserted the vertical. into N .'t yspace 3V2 .

lef;g J.:.bundia bail was booked with a "C" book and line and tied off toM..,p. the hand r '

igJ.'gThe Refuel floor and Reactor building were evacuated until surveys were coo <

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c T plated. bearveys and samples indicated no Isakage. A special team was briefediMgMi '

estarsed to the Refusi floor and uprighted the lamming bundle using the E,t '7 J M,4?11 mry heist en the overband crane. Be dle #81 was lowered into space 3V2..:~.- ,., N. 3,'

dle ist out of 3V2 and put it into the3

,. .,jd m channel was found scratched Crn.C,#TheFuelgrapplewasusedtopullbunI.Fual Prey Machine for bor and was replaced. N fuel was not damaged.

'gi! ? . ha d aa la 371 and 3Y3 were removed and inspected. No damage was observed. ),Vtu.DfATP'*O .*%.'I

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Corrective Action. ... -  %.

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d{'g,2 ' ['EachshiftthatrequiresuseoftheCRDgrapplewill,visuallyinspect,%-

.9,.CID grappla and verify proper latching actuation. uf

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' ."..,.'*.Facility Date ofStatus: Incidastr a. t -'r 4. ~>T p% . Routine Startup ( ) Routine Shutdown ( ) g y-

', '.,. . i Steady State ( ) Load Change during Power Opi (.rf J',/-

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( ) While Shutdown; Explalas - (944 e ute4H.* . g* 'A' .'(',7. A )'

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Title DMW4 JWmt b 89 * **+dr Part,33 PESC Soviews Action Item fou __ ~ .. . R S ~ H.* % ) Nt '/sv.s.$ $$  ;

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- .e e7 March 27, Ic76 //76-44 I. -Attendance!

Hembers <

Others'

.J. R. Holder . Chairman C. Dietz - Consultant (GE)

J. M. Griffin- J. Miller - Consultant'(GE)

M. - A. Jones P. Freehill Consultant (GE) -

.R.'B. Starkey.

. J. D. E. Jeff ries -(CNS) ~

.A. M. McCauley '(part time)

. B. Webster (Nuclear Generation) t K. Brown (GE) i E. Enzor (S/U Engineer) *

• Administrative:

.II..

MeeEing #76-44 of 'the ~ Brunswick plant Nuclear Safety Committee was held

. March 27, 1976. _l III. A b Itemst 1

1. Tpe PNSC convened at 11:45 to review and discuss the fuel handling )

4 'j ncident which occurred this morning. J. Miller described the total i

incident from inception until the.fual bundle-in question was properly stowed. M. Jones reviewed the operator critique sheets which wera

. prepared immediately following the incidait.

The cause of this incident was the hook on the C. R. Grapple not being '

l fully engaged.

Based on the' discussion which tool. place, it was determined that the ~

following' corrective action had been successfully carried o*ut:

a. The teactor building had been evacuated,

b. Radiation surveys were completed on the refueling deck - no in-crease in activity was noted. 1

c. EI-22, as appropriate to the circumstances, had been imple'ented. m

d. All channeling activities were innediately stopped.  ;

e. The fuel bundle in question was safely'and properly restowed.

In addition, the following corrective action will be carried out prior to i using the C. R. Grapple for additional fuel handling evolutions:

a. The C. R. Grapple air valves will be labled.

b. C. R. Grapple engagement will be verified by trial lif t or by verifying Grapple engagement by visual means W/-___

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. . The C. 'i. Crapple will be visually inspected and checked for proper operation at least daily when in use.

Fending inspection of the fuel bundle in question and those bundles i= mediately adjacent to it, this neeting was temporarily adjourned.

Later this af ternoon the PNSC was informed of the following inspection results:

a. A visual inspection of the fuel bundle which was inadvertently released was completed this afternoon by a CE fuel engineer. The bundle was dechanneled and both the channel and fuel were inspected.

b. There was a small dent in the channel; therefore, this channel was -

rej ected' and a new channel was installed on the bundle.

c. ,There was no visible damage to the fuel. ,

Status: This item remains open pending receipt of further information from CE.

1

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!FCC ;GC* EAR SAFEn' COMMITTEE. j April 3, 1976; #76-50 4 :I. ' Attendance:

Members Alternate

.J. R. Holder Chairman

• G. Milligan J. Griffin

, R. Starkey ,

,i II. Administrative Meeting #76-50 of the Brunswick Plant Nuclear Safety Committee was_ , )

held April 3, 1976. I h III. Action Items:

? 1 1 Reviewed BSEP Special Procedure, SP-76-9, Rev. 0- , (

'(Inspection Plan, Procedure, and Criteria for BSEP Unit #2 Fuel; j c FOU-289-0002-10) j 1

, , This procedure for inspection of suspect fuel bundles following the bundle drop incident of last week was prepared by GY-San Jose. l

. The inspection will be conducted by GE fuel engineers. 4 In Session

Connaittee reconsnanded approval.

Status

This item is closed.

2. The committee briefly discussed the corrective action decided upon )

yesterday concerning the Unit #2 containment penetration welds. The )

corrective action decided upon was to re-examine by UT the welds in question to determine if the indications previously noted'still ex'ist. -

Additional evaluation shall be conducted based on the new data obtained. 1, CP&L construction QA will be following this examination and reporting the results to the QA Supervisor.

Status Open pending receipt of the new UT dats and engineering" evaluation, if required - assigned to R. Starkey. ,

9 9

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?!!CT "*0LElf, SAFITi CO:0::TTEE krch 31, 1976 #76-47 I. Attendance:

. Members Alternates J. Holder - Chairman J. Waldorf M. Jones S. Thorndyke ,

II. Administrative:

Meeting N76- 47of: the Brunswick Plant Nuclear Safety Committee was - ,

held March 31, 1976.

' III. Action Items:

Discussed and approved a procedure to upright bundle 444 lying on fuel storage racks.

Status: 'this item e closed.

?-/ " ,9d?4 / W PNSC Chairman PNSCSepretary ,

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