ML19254D083

From kanterella
Jump to navigation Jump to search
Notifies of Interim Actions for Plant Operation Pending Final Resolution of ATWS Issue,In Response to NRC 790817 Recommendations
ML19254D083
Person / Time
Site: North Anna Dominion icon.png
Issue date: 10/18/1979
From: Stallings C
VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.)
To: Harold Denton
Office of Nuclear Reactor Regulation
References
689A-081779, 689A-81779, NUDOCS 7910220346
Download: ML19254D083 (1)


Text

VIRGINTA 1$LECTHIC AND POWER C O MPA NY R IC HM ON D, VIRGIN IA n O n 61 October 18, 1979 Mr. Earold R. Denton, Directar Serial No. 689A/081779 Office of Nuclear Reactor Regt ation P0/FHT:baw Attn: Mr. Steven A. Varga, Acting Assistant Docket No. 50-339 Director for Light Water Reactors Permit No. CPPR-78 U. S. Nuclear Regulatory Commission Washington, D. C. 20555

Dear Mr. Denton:

Subject:

Anticipated Transients with Failure to Scram Interim Actions for North Anna Power Station Unit 2 This is in response to your letter of August 17, 1979, describing interim actions needed for plant operation pending final resolution of the anti-cipated transients with failure to scram (ATWS) concern.

Virginia Electric and Power Company will take the following actions in accordance with the Staff's recommendations.

1. Emergency procedures will be revised to enable the operator to rapidly recognize and respond to an ATWS event.
2. Operator training will be conducted to familiarize all operators with the indications of an ATWS event and will emphasize corrective actions which must be taken.

In light of the scope of the proposed actions for ATWS event mitigation and the substantial ef fort now underway in the study and evaluation of the TMI incident, we have developed an integrated program to address these concerns.

As you are aware, in response to NUREG-0578, our NSSS Vendor Owners Group has developed a large number of procedural and training chaages which will be implemented to improve operator response to abnormal events. To minimize operator confusion and facilitate a unified approach to operator training, ATWS and TMI concerns will be incorporated into the emergency procedures and training programs simultaneously. This effort, currently underway, will be completed in about six weeks. We expect to forward our procedures for your review on or about December 3,1979.

Very truly yours, f ,. /

C. M. Stall n Vice President-Power Supply and Production Operations cc: Mr. James P. O'Reilly ( ,

A