ML20210K228

Informs That Perry Nuclear Power Plant Scheduled Essential Maint of Svc Water Sys,Will Occur During Sept & Oct of 1997

ML20210K228
Person / Time
Site:	Perry
Issue date:	08/13/1997
From:	Myers L CENTERIOR ENERGY
To:	Underwood M OHIO, STATE OF
References
PY-CEI-OEPA-027, PY-CEI-OEPA-27, NUDOCS 9708190189
Download: ML20210K228 (2)

Text

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• CENTERIOR ENERGY I 2 r Generation Group

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Perty Ndar Power P6 sit Mad A#ess Pt&P80491$

Lew W. M yers

! 10 corner Ibad PO.bos97 F AX. 216-?BO-8029 We Prescerit j Porty. oNo 44001 Perr y. oH 44081 August 13,1997 PY CEl/0 EPA 0274L Attention: Marie Undenvood Ohio Environmental Protection Agency Northeast District OfUce 2110 Aurora Road Twinsburg, Ohio 44087 Perry Nuclear Power Plant N

NPDES pennit No. 31B00016*ED Cured in Place Piping Replacement Ladies and Gentlemen:

The Perry Nuclear Power Plant has scheduled essential maintenance of the Service Water System, which will occur during September and October of 1997. This maintenance activity will insert a vinyl ester lining, impregnated with a styrene resin, into the Service Water Sys,t.em piping. This lining will cure inside the existing pipe. This activity is termed a Cured in Place Piping project. As part of the insertion and curing process, water will be pumped through the liners in a closed loop system. Once the cure procedure has progressed sufUciently, the cure water will be transferred to the Chemical Cleaning Lagoon, discharge point 31B00016602, where it will remain until sometime after the Service Water System is restored to an operating status, The total amount of cure water will be approximately 250,000 gallons.

A controlled test of this application was conducted to determine the approximate amount of styrene present within the cure water. The analysis results indicated that the cure water contained approximately 2000 partr. per billion (ppb) of styrene afler cooling and less than 1000 ppb of styrene after a 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> aeration period. These levels are expected to decrease to approximately 50 ppb while the cure wat,:r remains in the Chemical Cleaning Lagoon.

The process may also utilize vegetable oil as a lubricant for some of the liner insertions. The concentration of oil and grease within the cure water will be main'ained within the limits I specified by NPDES Pennit 31300016*ED,(30 day average 15 ppm, daily average 20 ppm). h,b 9708190189 970813 '

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The Perry Nuclear Power Plant is requesting permission to discharge the above mentioned cure water, from the Chemical Cleaning Lagoon (31800016602), through the Discharge Tunnel Entrance Structure (31800016004), under the following conditions:

1. The Service Water System will be in service providing dilution flow.

2. The Chemical Cleaning Lagoon will be sampled and analyzed, per EPA Method 8260 with a detection limit of approximately 5 ppb, to determine styrene levels prior to discharge.

3. The Chemkal Cleaning Lagoon will be discharged through the Service Water System at a discharge rate that will ensure the Discharge Tunnel Entrance Structure (31B00016004) styrene concentration is less than the detectable limit of EPA Method 8260, approximately 5 ppb. 4. The Discharge Tunnel Entrance Structure, (31B00016004), will be sampled and analy7ed per EPA Method 8260 to document discharge styrene concentrations (concentrations to be less than detectable, approximately 5 ppb). s s. 5. The Discharge Tunnel Entrance Structure, (31800016004), will be sampled and analyzed per approved EPA Method to document discharge oil and grease concentrations (concentrations to be within limits of NPDES Permit 31B00016*ED). 6. All discharge documentation will be maintained and results included with the applicable NPDES Monthly Report as requested, if you have any questions or require additional information, please contact James T. IUitchen at (216)280-5601. Very truly yours, 8td hY JTR:jem ec: NRC Document Control Desk (Docket Number 50-440) NRC Project Manager NRC Resident inspectors Office NRC Region 111 i 1

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