ML20028H037

Discusses Util Request to Delete Unusual Event Initiating Conditions in Emergency Classification & Action Level Scheme for Facility.Proposed Scheme of Emergency Action Levels Considered Vast Improvement Over Current Sys

ML20028H037
Person / Time
Site:	Clinton
Issue date:	09/27/1990
From:	Wight R ILLINOIS, STATE OF
To:	Murley T Office of Nuclear Reactor Regulation
References
NUDOCS 9010050269
Download: ML20028H037 (2)

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STATE OF ILLINOIS DEPARTMENT OF NUCLEAR SAFETY 1035 OUYER PARK DRIVE SPRINGFIELD,IL 62704 N_ '

(217) 785 9900 m MASEORMER JAMES R. WOMM September 27, 1990 DintcTon 00vtagon  !

Mr. Thomas E. Murley, Director Office of Nuclear Reactor Regulation '

U.S. Nuclear Regulatory Commission Washington, DC 20555

Dear Mr. Murley:

The Illinois Department of Nuclear Safety (IDNS) has ueen following Illinois Power Company's request to delete a number of unusual event initiating conditions in the emergency classification and action level scheme for the Clinton nuclear power station. The Department has reviewed both the ,

draft and final versions of NUMARC/NSEP-007, "Mathodology for Development of I Emergency Action Levels." The proposed scheme of emergency action levels is a ,

vast improvement over the current system in ease of classification and in eliminating redundant notifications. Placing unusual event thresholds above the operating envelope and incorporating precursors of more serious events provides a logical separation of 10CFR50.72 "Non-Emergency" notification and  ;

accident classification. There is, however, a negative aspect of the proposed scheme that should be considered and, hopefully, eliminated.

Deleting some unusual events would deprive states from receiving timely information in situations where it is needed. For example, under the proposed scheme the transportation of an injured, contaminated persM is no longer an unusual event. Depending upon the circumstances, IDNS may want to send a team to the receiving medical facility to verify contamination control.

IDNS personnel discussed tne pr.oposed changes with Illinois Power Co.

officials in October 1989. Agreement was reached that the changes were needed and that the changes would not reduce the notification scheme's effectiveness  ;

if the utility made paralle1~ 10CFR50.72 reports to the NRC and the state. We request that such reports be required when NUMARC/NSEP-007 is implemented.

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( t IDNS will continue to follow the implementation of NUMARC/NSEP-007. If you or your staff have any questions, please contact me at (217)785 9851.

Sincerely, b

Roy R. Wight, Manager Office of Nuclear Facility Safety RW:rc cc: A. Bert Davis, NRC Region III Del Butterfield, Ceco Frank Spangenburg, IPC John Plunk, IESDA i

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