ML20074A437
| ML20074A437 | |
| Person / Time | |
|---|---|
| Site: | Byron, Braidwood, 05000000 |
| Issue date: | 05/06/1983 |
| From: | Swartz E COMMONWEALTH EDISON CO. |
| To: | Harold Denton Office of Nuclear Reactor Regulation |
| References | |
| 6374N, NUDOCS 8305130051 | |
| Download: ML20074A437 (2) | |
Text
"A
's Commonwealth Edison o
) one First N'hortl Plaza, Chicago, Ilknots s
k
] Addr:ss R; ply 12: Post Off:cs Box 767 yj Chicago Illiriois 60690 N
May 6, 1983 Mr. Harold R. Denton, Director Office of Nuclear Reactor Regulation U.S. Nuclear Regulatory Commission Washington, DC 20555
Subject:
Byron Station Units 1 and 2 Braidwood Station Units 1 and 2 Additional Information Concerning Environmental Qualification Program NRC Docket Nos. 50-454/455 and 50-456/457 Reference (a):
E. D. Swartz letter to H. R. Denton dated April 14, 1983 (b):
B. J. Youngblood letter to D.
L. Farrar dated March 15, 1983 Daar Mr. Denton:
Reference (a) provided certain additional information concerning the Environmental Qualification Program for our Byron and Braidwood Stations in response to Reference (b).
The purpose of this letter is to provide a revision to our Reference (a) response to Question 270.9 Part c.
Our FSAR will be amended to include this revision as stated in the Attachment to this letter.
Please address any questions that you or your Staff may have concerning this matter to this office.
One (1) signed original and fifteen (15) copies of this letter with Attachment are provided for your use.
Very nyE. Douglas Swart yz Nuclear Licensing Administrator Attachment cc:
J. G. Keppler - RIII RIII Inspectors - B/B 6374N
(
B305130051 830506 PDR ADOCK 05000454 A
~
15.
N.
)
B/B-FSAR QUESTION 270.9 "The description of the qualification program for safety-related mechanical equipment in Section 3.11 of the FSAR is not sufficient for demonstrating compliance with General Design Criteria 1 and 4 of Appendix A and Sections III, XI, and XVII of Appendix B to 10 CFR Part 50.
Provide th3 following additional information for our review:
a.
Confirmation that harsh environment mechanical components
.in the safety-related systems identified in your J une 17, 1982 submittal for electrical equipment have been included in a design verification program.
b.
The criteria utilized for demonstrating qualification of the equipment and their bases, c.
The current status of this equipment with respect to the above requirements.
If design verification to the applicable criteria is complete, so indicate.
If additional review and evaluation are required, described the tasks to be performed and the schedule for their completion."
RESPONSE
~
a,b.
Response to parts a and b have previously been sent to the NP.C on January 14, 1983 (See CECO letter to the NRC, T. R. Tramm to H. R. Denton, dated January 14, 1983).
c.
A representative sample of active mechanical equipment in a harsh, environment has been qualified by the methods descriDed in the referenced letter.
The qualification information for this sample of mechanical equ'ipment will be available for the EQ audit.
Q270.9-1
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