NRC Generic Letter 80-78, Mark I Containment Long-Term Program

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GL80078

UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D. C. 20555

AUGUST 20 1980

Docket No. 50-293

Mr. G. Carl Andognini Boston Edison Company M/C NUCLEAR 800 Boylston Street Boston, Massachusetts 02199

Dear Mr. Andognini:

Enclosed, for your information, is a copy of the "Mark I Containment Long- Term Program Safety Evaluation Reports Resolution of Generic Technical Activity A-7," NUREG-0661, dated July 1980. This report describes the results of the staff's review and the bases for the staff s requirements relative to the generic suppression pool hydrodynamic load definition and assessment procedures for the Mark containment design for boiling water reactors.

Additional copies of this report can be obtained, at a cost of $6.50 per copy, from the GPO Sales Program, Division of Technical Information and Document Control, U.S. Nuclear Regulatory Commission, Washington, DC 20555.

Thomas A. Ippolito, Chief Operating Reactors Branch #2 Division of Licensing

Enclosure: NUREG-0661

cc w/o enclosure See next page

8009150

.AUGUST 20 1980

Mr. G. Carl Andognini Boston Edison Company

cc:

Mr. Paul J. McGuire Pilgrim Station Acting Manager Boston Edison Company RFD #1, Rocky Hill Road Plymouth, Massachusetts 02360

Henry Herrmann, Esquire Massachusetts Wildlife Federation 151 Tremont Street Boston, Massachusetts 02111

Plymouth Public Library North Street Plymouth, Massachusetts 02360

Resident Inspector c/o U. S. NRC P. O. Box 867 Plymouth, Massachusetts 02360

Dr. H. O'Conner Boston Edison Company 800 Boylston Street Boston, Massachusetts 02199