ML20117G624

Confirms 960514 Telcon Rept of Unauthorized Discharge Due to Leak in Expansion Joint in Plant Cooling Tower Basin Wall

ML20117G624
Person / Time
Site:	Perry
Issue date:	05/17/1996
From:	Shelton D CENTERIOR ENERGY
To:	OHIO, STATE OF
References
PY-CEI-OEPA-025, PY-CEI-OEPA-25, NUDOCS 9605210442
Download: ML20117G624 (2)

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c m mon  %"o- 4, W w- nunnar PERRY NUCLEAR POWER PLANT Mail Address:

Donald C. SheltOn 10 CENTER ROAD SENIOR VICE PRESIDENT R ,O 10 44081 PERRY, OHIO 44081 NUCLEAR (216) 259-3737 May 17, 1996 PY-CEI/OEPA-0250L Ohio Environmental Protection Agency Northeast District Office 2110 E. Aurora Road Twinsburg, Ohio 44087 Re: Perry Nuclear Power Plant OEPA Permit No. 3IB00016DD Gentlemen, In accordance with Part III, Section 12.C of the Permit, this letter is serving as confirmation of a telephone report of an unauthorized discharge.

The discharge was due to a leak in an expansion joint in the plant cooling tower basin wall. The telephone report tas made to the State Emergency Response Commission on May 14, 1996. Sf,nce the time of that telephone report, four additional areas of leakage thro 1.gh the concrete cooling tower return header were identified. The total resulting additional leakage is estimated to be less than one gallon per minute. The Part III, Section 12. C issues were addressed as follows taking all leaks into consideration.

1. The limitation which has been exceeded: Plant circulating water was discharged to the ground through a leaking expansion joint on the cooling tower basin wall. The four additional leak locations in the concrete cooling tower header are leaking less than one gallon per minute to the ground. This is not the normal flow path far the water from this system.

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2. The extent of the exceedance: Approximately one gallon per minute of plant circulating water was leaking to the ground from the expansion joint. The leakage was discovered at 1100 on May 14, 1996; by 1400 it had been contained in a sump and routed back into

' the cooling tower basin. The additional leakage of less than one gallon per minute was discovered during follow up inspections of j the cooling tower. This le.akage is not currently being contained.

3. The cause of the exceedance: A leaking expansion joint on the cooling tower basin wall and additional leak locations in the O concrete cooling tower return header. ' )

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4. The period of exceedance: The leak was noted at approximately 1100 on May 14, 1996. The time the leakage started is not known. The sump and pump were installed to route the flow back into the i cooling tower basin at 1400 on May 14, 1996. The additional leakage from the cooling tower return header was noted on May 16, 1996.

5. If uncorrected, the anticipated time the exceedance is expected to I continue: The leakage from the expansion joint was brought under ,

control at 1400 on May 14, 1996, when the pump was installed to route water back into the cooling tower basin. The header leakage is not being contained. All leakage is being evaluated for repair. -

6. Steps being taken to reduce, eliminate and/or prevent recurrence of the exceedance: All leakage is being evaluated for repair.

i If you have questions or require additional information, please contact i Louise K. Barton at (216) 280-5512.

Vary t yours,

[ F b l fo NALD C. LTON I I DCS:lkb:vah i l

I cc NRC Project Manager l l NRC Resident Inspector l

NRC Document Control Desk NRC Region III l

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