ML20207G460

PNO-77-221:on 771213,cracks Found in Control Element Assembly Guide Tubes of Three Fuel Assemblies During Plant Refueling Outage.Licensee Awaiting Recommendations from Fuel Vendor (Combustion Engineering) as to C/A

ML20207G460
Person / Time
Site:	Millstone
Issue date:	12/14/1977
From:	Klingler G, Nolan F, Sniezek J NRC OFFICE OF INSPECTION & ENFORCEMENT (IE)
To:
References
PNO-77-221, NUDOCS 9903120080
Download: ML20207G460 (1)

Text

-

' h p o b> A L u

h J Odip b

0 PRELIMINARY NOTIFICATION December 14, 1977

_(

PRELIMINARY NOTIFICATION OF EVENT OR U

--PNO-77-221 POSSI3LE safety or public interest significanceT n event of g;

( ~

presented-1s as initially received without verification or eval The information and is basically all that is known by IE staff on this date

~

uation Facility:

4 Northeast Nuclear Energy Company Millstone Point Unit No. 2 (DN 50-336)

Subject:

CRACKS IN CONTROL ELEMENT ASSEMBLY GUID 4:

TUBES fuel assemblies on December 13 Cracks were found in th

Fuel handling operations were s,uspend d1977, during a pla i ;

es of in tage.

five guide tubes of one fuel assembly.e when cracks were found in all i

vided structural support for the fuel assemblies.The one-inch guide tub i

The cracks observed have been axial with sma cracks have been observed in fuel assembly guide tubes w No been used for control element assembly locations guide tubes has not been observed at other Combustion This cracking of the i

4 L

Engineering) as to corrective actions. All fue ants.

N

'itW F ombustion element assemblies will be removed from the reactor and t ng control will be inspected.

Fuel handling operations will not resume until a plan of action has been formulated based upon fuel vendo es i.

Plant startup is being delayed until corrective action is take ons.

t n.

Media' interest is expected because of past/ current problem i

and attention directed to those problems.

i fj -

e site been informed. A press release is not planned by the licensee and i

NRC.

.g.c >

ii'!

p i

NRC, Region I, (Philadelphia) received notificatisn of this occu j '*

telephone from the Assistant Plant Superintendent at 3:50 pm 4

rrence by j!. '

1977..

i ember 13,

Contact:

G. Klingler, IE-X28019 FNolan, IE x28E19 JSniezek, IE x q E Distribution:

4 y a.

Chainnan Hendrie Transmitted H St / h A d.

i j-Commissioner Kennedy 4 Commissioner Bradford Commissioner Gilinsky S. J. Chilk, SECY C. C. Kammerer, CA

/

h (ForDistribution) k.. Transmitted:L. V. Gossick EDO

yj

. MNB8 /F M P Bfdg f/.* d y

,7e s - S. H.-Hanauer,, ED0 E. G. Case, NRR E. Volgenau, IE I-Region f_ //.*M 3 -ll(-

{A J. J. Fouchard, PA R.'Hartfield, MIPC' SS Bldg ?' P,g R. G. Ryan,-OSP C. V. Smith..NMSS (MAIL)

'~

H. K. Shapar, ELD R. J. McTiernan, 0IA

. R. Minogue, SD ti yn37g extLininnwy noisencATram 4

a

.