ML20212N572
| ML20212N572 | |
| Person / Time | |
|---|---|
| Site: | Callaway  |
| Issue date: | 08/15/1986 |
| From: | Randolph G UNION ELECTRIC CO. |
| To: | James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| References | |
| 86-05, 86-5, ULNRC-1358, NUDOCS 8608280287 | |
| Download: ML20212N572 (3) | |
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' Union Etscraic a
Canaway Plant August 15, 1986 PRIORITY ROUIING b'#
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L Mr. James G. Keppler
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l' Regional Administrator g jg3-Q Z Office of Inspection & Enforcement U.S. Nuclear Regulatory Commission L
e Region III FIL Q 799 Roosevelt Road Glen Ellyn, IL 60137 ULNRC-1358
Dear Mr. Keppler:
DOCKET NUMBER 50-483 CALLAWAY PLANT UNIT 1 FACILITY OPERATING LICENSE NPF-30 SPECIAL REPORT 86-05 LOOSE-PART DETECTION SYSTEM The enclosed Special Report is submitted pursuant to Technical Specification 3.3.3.8 action (a) concerning the inoperability of one channel of the Loose-Part Detection System.
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G. L. Randolp Manager, Callaway Plant
$MS WRR/TPS/JMK/drs Enclorure cc: Distribution attached fV i
8608280287 860815 PDR ADOCK 05000483 AUG 2 01986 S
PDR Mahng AcMress* P.O. Box 62Q Fulton, MO 65251
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Q cc distribution for ULNRC-1358 l
Mr. Paul O'Connor Manager, Electric Department i
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 i
The Exchange Suite 245 Mr. Nicholas A. Petrick
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270 Farmington Avenue Executive Director, SNUPPS Farmington, CT 06032 S. 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. Neuhaifen A. C. Passwater/D. E. Shafer/D. J. Walker (470)
G. A. Hughes Z40.03 (QA Record)
J. M. Price 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)~
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SPECIAL REPORT 86-05 LOOSE-PART DETECTION SYSTEM This report is being submitted 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."
At approximately 0001 CDT on 7/8/86, during the Control Room Shif t and Daily Log Readings and Channel Checks Surveillance, Channel 5 of the Loose-Part Detection System was logged in the alarm status and declared inoperable. The plant was in Mode 1 at 100% power.
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, approximately 120* counter-clockwise from Channel 5.
Channel 6 was verified operable at the time of discovery.
Upon further investigation, it was found that the Steam Generator "A" Sludge Lance Hand Hole Cover was leaking onto the Channel 5 Loose-Part Detection System Hard Wire / Soft Wire Junction Box.
This created a ground condition, thus making Channel 5 inoperable. On 8/8/86, Channel 5 of the Looge-Part Detection System was inoperable for more than 30 days.
To correct the inoperability, work has been completed-to temporarily reseal the Hand Hole Cover to prevent further leakage onto the Channel 5 Hard Wire / Soft Wire Junction Box.
Work has been planned to permanently repair the Hand Hole Cover and the damage to the Channel 5 Junction Box.
Due to plant conditions (high radiation levels during plant power operations) at the location of the equipment to be repaired, further work will not be attempted until the first outage of sufficient duration, but not later than the' restart following the next refueling.
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