ML20045E936
| ML20045E936 | |
| Person / Time | |
|---|---|
| Site: | McGuire, Mcguire  |
| Issue date: | 06/25/1993 |
| From: | Atherton N DUKE POWER CO. |
| To: | Gleason R NORTH CAROLINA, STATE OF |
| References | |
| NUDOCS 9307060214 | |
| Download: ML20045E936 (4) | |
Text
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E Duke Ibuer Company
- Generation Services Department 13339 Hagen ibny Road j
Huntencille. NClS!)i8-7929 1
i DUKEPOWER June 25,1993 Mr. Rex Gleason Regional Manager Water Quality Section Department of Environment, IIcalth and Natural Resources 919 North Main Street Mooresville, N.C. 28115 Attention: Mr. Mike Parker
Subject:
McGuire Nuclear Station NPDES Permit NC0024392 Noncompliance File: MC 702.13 Certified: P 384 361040
Dear Mr. Gleason:
Pursuant to Part II, Section D(6)(a) of the subject permit, this is a follow-up written report for a recent noncompliance at the McGuire Nuclear Station.
The initial notification was made to Mr. Mike Parker on June 11, 1993, by Mr. John Carter and Mr. Mike Kowalewski of Duke Power Company.
On the night of June 10th, it was discovered that leaking antifreeze solution had reached a floor drain at the McGuire garage facility. This floor drain is aligned to the domestic wastewater treatment (WT) lagoon at the McGuire site. The antifreeze solution was a 50:50 mixture of ethylene glycol and water.
The leak occurred as the result of a pinhole leak that had developed in a cracked fitting of the ethylene glycol storage tank. At the time that the leak was discovered, the 100 gallon capacity tank was approximately half full. For conservatism, it was assumed that, at the most, 50 ganons of antifreeze solution may have reached the WT system.
In determining the potentialinipact of the leak on the WT system, the followingpoints were considered. Due to the size of the pinhole leak, the leakage may have occured over a period of several days. Forty-eight hours prior to discovering the leak, the routine NPDES samples had been collected. These samples would be representative of how the lagoon was operating during the time that antifreeze may have been leaking into the WT system.
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- A review of the NPDES data collected June 8th showed all samples were in compliance and were within expected norms. Also, other operating data collected on the lagoon prior to and and following the leak event did not show any significant change as the result of the leak. Operator observations during the time of the leak did not note'-
any unusual changes in the behavior or appearance of the system. In summary, the antifreeze leak did not appear to have had any detrimental effect on the WT system.
There was no environmental impact to the receiving waters as a result of this incident. If you should need additionalinformation or have questions, please contact Norma Atherton at (704) 875-5963.
Sincerely, M W W/&
Norma G. Atherton, Scientist Environmental Division, Water Protection Group Generation Services Department cc: Mr. Randy Kepler - NCDEHNR - Raleigh, N.C.
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J.R. IIendricks - MG03Al M. A.' Lascara - MG03A5 J.S. Carter - MG03A5 D.W. Phillips - MG01EM C.H. Odom - MG01EM R.P. Michael - MG01CH D.L. Cline - MG01CH G.W. Sain - EC07D J.M. Trepel - PB05E l
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0.S. NUCLEAR REGULATORY. COMMISSION
,cc:
DOCUMENT CONTROL DESK WASHINGTON, D.C. 20555 t
U.S. NUCLEAR REGULATORY COMMISSION 101 MARIETTA STREET, NW, SUITE 2900 ATLANTA, GEORGIA 30329 U.S. NUCLEAR REGULATORY COMMISSION i
OFFICE OF NUCLEAR REACTOR REGULATION I
WASHINGTON, D.C. 20555 MR. Kim Van Doorn i
NRC Resident Inspector.
l McGuire Nuclear Station i
12700 Hagers Ferry Road Huntersville, N.C. 28078 i
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