ML20073C311

NPDES Noncompliance Notification:On 940908,release of Sodium Nitrate Occurred as Result of Digging Operation That Accidently Ruptured Cooling Sys Pipe.Sys Isolated & Repairs Made.Sys Operating Normally

ML20073C311
Person / Time
Site:	Catawba
Issue date:	09/15/1994
From:	James Reece DUKE POWER CO.
To:	Howell C, Mckinney S SOUTH CAROLINA, STATE OF, YORK COUNTY, SC
References
NUDOCS 9409230238
Download: ML20073C311 (3)

Text

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September 15,1994 1 Stan M. McKinney South Carolina Emergency Response Commission Division of Public Safety Program Rutledge Building Emergency Preparedness 1429 Senate Street Columbia, South Carolina 29201 Cotton Howell York County Emerger:cy Preparedness Agency 155 Johnson Street P.O. Box 11706 Rock Hill, South Carolina 29731

Subject:

Catawba Nuclear Station Follow-up Release Notification - Sodium Nitrite File: C N-702.26, 702.04 ,

Dear Sirs,

Pursuant to 40 CFR 355 (Emergency Planning and Notification), Duke Power Company hereby submits written follow-up notification for the release of sodium nitrite which occurred on September 8,1994.

The release began at approximately 1430 hours0.0166 days <br />0.397 hours <br />0.00236 weeks <br />5.44115e-4 months <br /> and was terminated at 1630 hours0.0189 days <br />0.453 hours <br />0.0027 weeks <br />6.20215e-4 months <br />. This release occurred as a result of a digging opeiation that accidentally ruptured a cooling system pipe containing the sodiura nitrite as a corrosion inhibitor. The concentration of sodium nitrite in the s)' stem was 2,121 parts per million (ppm), but was constantly being diluted from 11e systems demineralized water makup. A total of approximately 200 pounds of sodium nitrite was released.

The chemical solution flowed across soil into a local yard drain which diverts stormwater to the site conventional waste treatment system. There was no off site release. The spill area was flushed with clean water to ensure that the entire contents of the spill was transported to the treatment system.

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Follow-up Release Notification - Sodium Nitrite l 1

Page 2 of 3-i Shoruy after the release was terminated, maintenance crews isolated the system and began making repairs. At this time, the repairs have been made and the system is operating normally. This event has been entered into our Problem Investigation Process (PIP) to determine the root cause and implement  ;

corrective actions to prevent future events of this nature.  ;

As sodium nitrite is a CERCLA listed chemical with a reportable quantity or 100 .

pounds, notifications were made to the following agencies: }

Acency Contact Date Time South Carolina Emergency Shelly Baskins 9/8/94 1635 .

Response Commission York County Emergency Barb Williams 9/8/94 1640 Preparedness

• National Response Center Petty Officer 9/8/94 1640  :

(Report # 259-06) Shores i

South Carolina Department Joe Farris 9/8/94 1650  :

of Health and Environmental Control  :

Nuclear Regulatory Steve Sandin 9/8/94 1805 Commission If you should have any questions concernino this matter or need additional '

information, please contact me at (803) 831-3376.

Sincerely, .l A

JisAeece, Scientist Catawba Environmental Management

d 4

. Follow-up Release Notificat;on - Sodium Nitrite Page 3 of 3 xc: Mr. Al Williams, DHEC - Catawba District Mr. Joe Farris, DHEC - Catawba District United States Nuclear Regulatory Commission - Documents Control Desk, Docket No. 50-413 United States Nuclear Regulatory Commission - S.D. Ebneter United States Nuclear Regulatory Commission ~- R.E. Martin United States Nuclear Regulatory Commission - Rich Freudenberger Electronic Liscense Library - EC050 Ms. B.J. Horsley - EC12T NCMPA-1 SREC PMPA NCEM F

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