ML19350E793
| ML19350E793 | |
| Person / Time | |
|---|---|
| Site: | Perry  |
| Issue date: | 06/18/1981 |
| From: | Davidson D CLEVELAND ELECTRIC ILLUMINATING CO. |
| To: | Tedesco R Office of Nuclear Reactor Regulation |
| References | |
| NUDOCS 8106230527 | |
| Download: ML19350E793 (2) | |
Text
THE CLEVELAND ELECTRIC ILLUMlN ATING COMPANY ILLUMINATING BLOG.
e 55 PUBLIC SoVARE P o. Box 5000 e CLEVELAND. ohio 44101 e TELEPHONE (216) 622-9800 e Serving The Best Location in the Nation Dalwyn R.Davidson t1CE PRESiOENT SfSTEM ENGINEERING AND CONSTRUCTION g
($
June 18, @
Q g
LN 1
?,
JUN 2 2198F{-,l 2
Mr. Robert L. Tedesco wh%ss h
5 Assistant Director for Licensing Division of Licensing b
57 U. S. Nuclear Regulatory Co=nission a
g Washington, D.C.
20555
Dear Mr. Tedesco:
Perry Nuclear Power Plant Docket Nos. 50-440; 50-441 Fire Protection In a letter dated April 3,1981, we indicated that additional information on fire pro-tection would be provided before June 19, 1981. After 11trther assessment of the scope of the response to these Appendbt R requirements, we find that the infor=ation you re-quested cannot be submitted as previously stated. The detailed tabulations required by your March 20, 1981 letter are being compiled and, therefore, we need to know a realistic date for the start of your fire protection review. She infor=awien could be provided as various phases are completed, if necessary, to support you_- needs.
We will contact you to coordinate our submittal consistent with your review schedule.
As a sm of our response to the require =ents on separation of cabling for safe shutdown systems, we offer the following infor=ation.
The Perry Project philoscphy with regard to electrical separation criteria is based on IEEE Standard 384-1974, as modified by Regulatory Guide 1.75.
Class lE cables and equipment for redundant divisions are routed in safety-related raceways which are separated in ace 3rdance with the criteria of this standard. Guidelines for separation between Class lE and non-class lE cir-cuits and equipmest are the same as redundant Class 12. Associated circuits are identified and physically separated as Class lE, as specified in IEEE 384-1974. Electrical cables are type tested in accordance with the require-ments of IEEE Standard 383-1974 and certified to be of fire retardant con-struction.
Finally, the methodology employed in the Perry fire hazards analysis is described in Section 2.0 of the Fire Protection Evaluation Report with
.0
$f a T810623082f f
4
?.
- . Mr.~ Robert L.: Tedesco
.-Page 2 June 18,' 1981 additional' discussion on the design bases for a Class lE power system in Table 8.1-2 '.of the FSAR..
If you have any problems with the revised schedule, please let us know.
Very truly yours, Dal R. Davidson Vice President System Engineering and Construction-DRD: dip.
cc:
G. Charnoff D.:Hauser i
J. Hughes, NRC Resident Inspector t
e 4
l l
l
,