ML20055B075

Provides Info Re Operation of Underdrain Sys Sump Pumps in Case of Accident.Sys Provides for Continuous Dewatering of Category I Groundwater Drainage Sys,Pumping Directly to Yard Drainage Sys

ML20055B075
Person / Time
Site:	Catawba
Issue date:	07/13/1982
From:	Parker W DUKE POWER CO.
To:	Adensam E, Harold Denton Office of Nuclear Reactor Regulation
References
NUDOCS 8207200335
Download: ML20055B075 (2)

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O DUKE POWEH COMMNY Powen Duiz.omo l 422 Sourn Cnuncu STaner, CHAHWTTE, N. C. asa4a WILLIAM O. PA R M E R, J R.

s A.'3".' l o' c'%,. July 13, 1982 me-oac;^-l^g Mr. Harold R. Denton, Director Office of Nuclear Reactor Regulation U. S. Nuclear Regulatory Commission Washington, D. C. 20555 Attention: Ms. E. G. Adensam, Chief Licensing Branch No. 4 Re: Catawba Nuclear Station Docket Nos. 50-413 and 50-414

Dear Mr. Denton:

At the request of the NRC Staff, Duke Power Company submitted on April 23, 1982 its environmental consequence analysis of a liquid pathway release of a core-melt accident (Q240.4, Environmental Report). In addition, as a followup to an August 11, 1981 meeting with the Staff, Duke is herewith providing information concerning operation of underdrain system sump pumps in the case of an accident.

The underdrain system siep pumps provide for continuous dewatering of the Category I groundwater drainage system, pumping directly to the yard drainage system.

Duke Power comits to providing in the Catawba Nuclear Station Emergency Procedures appropriate instructions to require the operators to secure the sump pumps in cases of accidents which show indication of core degradation. These procedures will assure that potentially contaminated groundwater in the underdrain system cannot be pumped to Lake Wylie.

This information will be formally integrated into a future revision of the Environmental Report.

Ve trulyyours,7

...-e. .

William 0. Parker, Jr ROS/php cc: Mr. James P. O'Reilly, Regional Administrator U. S. Nuclear Regulatory Commission Region 11 101 Marietta Street, Suite 3100 Atlanta, Georgia 30303 DO o!$OO4f3 PDR h

Mr. Harold'R. Denton, Director-July la 1982 Page 2 cc: Mr. P. K. Van Doorn NRC Resident Inspector Catawba Nuclear Station Palmetto Alliance 2135 Devine Street Columbia, South Carolina 29205 Mr. Robert Guild, Esq.

Attorney-at-Law 314 Pall Mall Columbia, South Carolina 29201 Mr. Henry A. Presler, Chairman Charlotte-Mecklenburg Environmental Coalition 943 Henley Place Charlotte, North Carolina 28207 Mr. Jesse L. Riley Carolina Environmental Study Group 854 Henley Place Charlotte, North Carolina 28207