ML18025A297

Letter Responding to Letters Dated April 17, 1975 and April 23, 1975 and Informing the NRC That a Schedule and Program for Resolution of This Matter Is Being Developed in Conjunction with Other Utilities Owning Mark II ...

ML18025A297
Person / Time
Site:	Susquehanna
Issue date:	05/08/1975
From:	Curtis N Pennsylvania Power & Light Co
To:	Butler W Office of Nuclear Reactor Regulation
References
840-2, ER 100450, PLA-66
Download: ML18025A297 (3)

Text

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F RONt. i'ennsylvania Power &Light DATE OF DOC DATE REC'D LTR TWX RPT OTHER Allentown, Pa. Co.

Norman W, Curtis 5-8-75 5 12rr75 XX'ENT TO: ORIG CC OTHER AEC PDR Dr, Halter R. Butler 1 Signed SENT I.OCAL PDR CLASS UNC LASS PROP INFO INPUT NO CYS REC'D DOCKET NO XXX 1 5 387 388 DESCR IPTION: ENCLOSURES:

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PP@IL TWO NORTH NINTH STREET, ALLENTOWN, PA. 18101 PHONEs t215) 821-5151 May 8, 1975 Docket Nos. 50-387 5O-388 Dr. Walter R. Butler, Chief Light Water Reactors Branch 1-2 Division of Reactor Licensing y 1 U.S. Nuclear Regulatory Commission t.

Washington, D.C. 20555 ~s /

s SUSQUEHANNA SES ADDITIONAL INFORMATION CONTAINMENT DESIGN C ER loo45O FILE 840-2 PLA-66

Dear Dr. Butler:

You have recently transmitted. two (2) letters to us requesting additional information relative to the design of Mark II containments to account for suppression pool, hydrodynamic loads that occur during loss of coolant accidents (letter dated April 17, 1975) and safety/relief valve discharge events (letter dated April 23, 1975).

In response to these letters, we(will provide you with our schedule for submitting the requested. containment design information and. evaluations by the week of June 2, 1975) This schedule and a program for resolution of this matter is 'being developed in conjunction with other utilities owning Mark II containments and. the General Electric Company.

As discussed. with Mr. J. M. Cutchin, the schedule for our response to Item 1 of your March 14, 1975 letter (regarding the design of wetwell to drywell vacuum breakers) will be included with the schedules mentioned above.

V ry tr y yours, Norman W. Curtis Vice President-Engineering 8 Construction CTC:JMR PENNSYLVANIA POWER 8 L I GH T COMPANY

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