ML20215N865

Special Rept 86-08:from 860922,loose-part Detection Sys Inoperable.Caused by Ground Condition in Channel 5 Hard Wire/Soft Wire Junction Box.Hand Hole Cover & Junction Box Will Be Repaired During Next Outage

ML20215N865
Person / Time
Site:	Callaway
Issue date:	10/31/1986
From:	Randolph G UNION ELECTRIC CO.
To:	James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
References
RO-86-08, RO-86-8, ULNRC-1397, NUDOCS 8611100007
Download: ML20215N865 (3)

Text

pgICRITY RCUTING

' . Uygog W W Etscraic oc-M3 Mbd _ Kt en 4 l_,,_[l!_

i une Callawa/ Plant October 31,.19.30 fit h t}&

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Mr. James G. Keppler Regional Administrator Office of Inspection & Enforcement U.S. Nuclear Regulatory Commission Region III 799 Roosevelt Road Glen Ellyn, IL 60137 ULNRC-1397 i

Dear Mr. Keppler:

DOCKET NUMBER 50-483 CALLAWAY PLANT UNIT 1 l FACILITY OPERATING LICENSE NPF-30 l

SPECIAL REPORT 86-08 LOOSE-PART DETECTION SYSTEM

[

The enclosed Special Report is submitted pursuant to l

Technical Specification 3.3.3.8 Action (a) concerning the inoperability of one channel of the Loose-Part Detection System.

l A Nsk G. L. Randol Manager, Callaway Plant k N CAkk WRR/TPS/dWK/drs ,

Enclosure cc: Distribution attached i

1 4l l 8611100007 861031 PDR ADOCK 05000483 S PDR 1

l MaRing Aattress' P.O. Box 620 Fulton, MO 65251 NON t

N cc distribution for ULNRC-1397 Mr. Paul O'Connor Manager, Electric Department Office of Nuclear Reactor Regulation Missouri Public Service Commission U.S. Nuclear Regulatory Commission P. O. Box 360 Mail Stop P-316 Jefferson City, MO 65102 7920 Norfolk Avenue Bethesda, MD 20014 Mr. O. Maynard Kansas Gas and Electric Company P. O. Box 208 American Nuclear Insurers Wichita, KS 62701 c/o Dottie Sherman, Library The Exchange Suite 245. Mr. Nicholas A. Petrick 270 Farmington Avenue Executive Director, SNUPPS Farmington, CT 06032 5 Choke Cherry Road Rockville, MD 20850 Mr. J. H. Smith Bechtel Power Corporation Records Center SNUPPS Project Institute of Nuclear Power Operations 15740 Shady Grove Road Suite 1500 Gaithersburg, MD 20877-1454 1100 Circle 75 Parkway Atlanta, GA 30339 NRC Resident Inspector Mr. Merlin Williams D. F. Schnell (400) Supt. of Regulatory Quality &

R. J. Schukai (470) Administrative Services S. E. Miltenberger Kansas Gas and Electric Company J. F. McLaughlin P. O. Box 309 J. E. Davis (Z40LER) Burlington, KS 66839 (Z40LER) (w/c)

D. W. Capone /R. P. Wendling (470)

F. D. Field (480)

A. P. Neuhalfen A. C. Passwater/D. E. Shafer/D. J. Walker (470)

G. A. Hughes l Z40.03 (QA Record)

J. M. Price l

W. R. Robinson M. E. Taylor H. Wuertenbaecher, Jr. (100)

S. L. Auston (470)(NSRB)

S. J. Bellers/J. D. Schnack GLR Chrono 3456-0021.6 3456-0260 Z40ULNRC G56.37

-N. Date (Sandra Auston) (470)

,. .Y is.

SPECIAL REPORT 86-08 LOOSE-PART DETECTION SYSTEM Introduction' Channel 5 of the Loose-Part Detection System has been inoperable 7

for more than 30fdays (9/22/86 toLpresent). .This report is therefore

~being-submitted within 10' days of;10/22/86 in accordance with Technical-Specification .3.3.3.8 ACTION (a) which states, "With one or more Loose-Part Detection System channels inoperable'for more than 30 days, .

prepare and. submit a Special Report to the Commission pursuant to Specification 6.9.2 within the next 10 days outlining ~the cause of the malfunction and the plans for. restoring the channel (s)-to OPERABLE

. status."~

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~

The Channel 5 accelerometer.is located on Steam Generator "A" on the lower supporting flange. .An additional accelerometer, Channel ~6, is

~

also located on Steam' Generator "A" on the lower supporting flange, L approximately 120' counter-clockwise from Channel 5. Channel 6 has been operable since Channel 5.was declared inoperable on 9/22/86. The plant

has been.in Mode 1, Power Operation, since 9/22/86.

.Cause of the Malfunction-t l: Special Report 86-05 was submitted cni 8/15/86 to report the inoperability of Channel 5 for more than 30 days. The cause of this inoperability was'a ground condition in the Channel 5 Hard Wire / Soft l Wire Junction Box due to leaka'ge from Steam Generator "A" Sludge Lance P Mand Hole Cover. The Hand Hole Cover was temporarily resealed, the Junction Box cleaned, and Channel 5 restored to operability. Work requests were written to permanently repair the Hand' Hole Cover and l correct the damage to the Junction Box during the next outage of

! sufficient duration.

i-

!- Channel 5 was again declared inoperable'at 0029 CDT on 9/22/86'due

i. to the channel being in a vibration alarm state. Recurring leakage from E the Hand Hole Cover had created another ground condition in the Channel l

5 Junction Box. The channel presently remains inoperable due to the

! ground condition.

I Plans for Restoring the Channel to Operable Status

f. The previously written work requests to repair the Hand Hole' Cover i and correct the damage to the Junction Box will restore the channel to operable status. Current plant conditions restrict completion of these work requests. The work will be performed during the next outage of sufficient duration, but not later than the restart following the next l' refueling outage. No additional Special Reports will be submitted on f the inoperability of Channel 5 of the Loose-Part' Detection System until the Hand Hole Cover and Junction Box are repaired during the next outage of sufficient duration.

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