ML20054D051

Advises That Extensive Period of Time Will Be Required for Adequate Response to NRC 820326 Request for Addl Info Re Cessar Rapid depressurization.C-E Owners Group Will Aid in Defining Program to Respond

ML20054D051
Person / Time
Site:	05000470
Issue date:	04/19/1982
From:	Scherer A, Scherer A ABB COMBUSTION ENGINEERING NUCLEAR FUEL (FORMERLY
To:	Tedesco R Office of Nuclear Reactor Regulation
References
LD-82-046, LD-82-46, NUDOCS 8204220280
Download: ML20054D051 (1)

Text

C-E Power Systems Tel 203/688-1911 Combustion Engineenng. Inc. Telex 99297 1000 Prospect Hill Road Windsor Connecticut 06095 H POWERSYSTEMS

\ N Docket No.: STN-50-470F April 19, 1982 c LD-82-046 p ), M % '%g

\ C

\ Q Mr., Robert L. Tedesco, Assistant Director k p[ Y,e%,,g D Division of Licensing -

/s V. S. Nuclear Regulatory Commission g @MM G Washington, D. C. 20555 (b 0'

Subject:

Rapid Depressurization and Decay Heat Removal Capability

References:

(A) Letter to A. E. Scherer to D. G. Eisenhut, LD-82-029, dated fiarch 4, 1982 (B) Letter R. L. Tedesco to A. E. Scherer, dated March 26, 1982

Dear fir. Tedesco:

Combustion Engineering (C-E) provided in Reference (A) the results of a CESSAR design review which concluded that its rapid depressurization and decay heat removal capabilities were sufficient. Subsequently the Staff requested addi-tional information in Reference (B) in order to complete their consideration of the potential for adding valves of a size to facilitate a more rapid depressur-ization of the CESSAR reactor coolant system.

Several questions in the requested information will require an extensive period of time to adequately respond. C-E is working with the C-E Owners Group (CE0G) to define a program to respond to these questions and the program will be con-sidered at the next CE0G meeting. At that time a scope and schedule should be agreed upon by C-E and C-E plant owners. Although C-E prefers one formal inte-grated response, interim review meetings can be held between C-E and the NRC Staff to ensure that C-E is pursuing an acceptable approach towards providing the requested information.

In any event C-E will provide you with a submittal next month which will con-tain a basis for continued licensing of the CESSAR design. The C-E submittal will justify continued CESSAR-F licensiig and plant operation until this matter is completely resolved.

If I can be of any additional assistance in this matter, please contact me or Mr. G. A. Davis of my staff at (203)688-1911, Extension 2803.

Very truly yours, g C0f18USTION ENGI _ RING, INC. 1 Ib l l

. S ierer 8204220280 920419 Director PDR ADOCK 05000470 Nuclear Licensing A PDR AES:ctk