ML20198E929

NPDES Noncompliance Notification:On 860402-04 & 0511, Circulating Water Sys Operated W/Less than Two Fine Mesh Screens.Caused by Loss of Power Supply in Unit 1 & Unit 2 Pump Failure.Power Restored & Pump Repaired

ML20198E929
Person / Time
Site:	Brunswick
Issue date:	05/23/1986
From:	Starkey R CAROLINA POWER & LIGHT CO.
To:	Wakild C NORTH CAROLINA, STATE OF
References
ESS-86-669, NUDOCS 8605280355
Download: ML20198E929 (1)

Text

C9&L Carolina Power & Light Company Serial: ESS-86-669 Mr. Charles Wakild Regional Supervisor NC Division of Environmental Management 7225 Wrightsville Avenue Wilmington, North Carolina 28403 RE: BRUNSWICK STEAM ELECTRIC PLANT NPDES PERMIT NO. NC0007064

Dear Mr. Wakild:

In accordance with the past notification requirements of NPDES Permit No.

NC0007064, this is to inform you that Carolina Power & Light Company's (CP&L)

Brunswick Steam Electric Plant operated its circulating water systems on two occasions with less than two fine mesh screens.

Unit No. I circulating water system operated with less than two fine mesh screens from 2140 hours0.0248 days <br />0.594 hours <br />0.00354 weeks <br />8.1427e-4 months <br /> on April 2 until 0400 hours0.00463 days <br />0.111 hours <br />6.613757e-4 weeks <br />1.522e-4 months <br /> on April 4. Unit No. I was in a startup condition on April 2 and lost the power supply (1D Buss) to IB and ID circulating water pump motors. These pumps are equipped with fine mesh screens. IC circulating water pump, equipped with coarse mesh screens, was immediately put into service to maintain canal level and provide water for radwaste releases. Power was restored to the ID Buss at 0400 on April 4, and ID and ID circulating water pumps were placed in service. The IC pump was secured at that time.

Unit No. 2 circulating water system operated with less than two fine mesh screens from 1240 hours0.0144 days <br />0.344 hours <br />0.00205 weeks <br />4.7182e-4 months <br /> until 1900 hours0.022 days <br />0.528 hours <br />0.00314 weeks <br />7.2295e-4 months <br /> on May 11. The 2C circulating water pump, which is equipped with coarse mesh screens, was put into service at 1240 on May 11 for discharge canal level control. The 2C pump was placed into service because the 2B pump, which has fine mesh screens, was unavailable for use due to mechanical problems. The key between the motor shaf t and pump gears had been sheared. The 2C pump was taken out of service prior to 1000 on May 11, and the 2B pump was repaired and put into service at 1433 on May 12.

In keeping with the new reporting requirements (see enclosure) established earlier this year, we will in the future be reporting any fine mesh screen non-preventative maintenance malfunctions as an attachment to the monthly DMR forms.

If you have any questions or comments, please contact R. K. Miller at (919)

Yours very truly, h I h tli ki; }

R. B. Starkey, r.

Manager Nuclear Safety and Environmental Services RBS/krs (4083TLP)

Enclosure Mr 11 R" Denton/ B605280355 DR 860523 Mr. J. N. Grace ADOCK 0500 4 S

'V 411 Fayetteville street

• P O. Box 1551

• Raleign. N. C. 27602 h 1 g

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