ML20106A612
| ML20106A612 | |
| Person / Time | |
|---|---|
| Site: | Byron, Braidwood, 05000000 |
| Issue date: | 01/31/1985 |
| From: | Tramm T COMMONWEALTH EDISON CO. |
| To: | Harold Denton Office of Nuclear Reactor Regulation |
| References | |
| 9705N, NUDOCS 8502110297 | |
| Download: ML20106A612 (2) | |
Text
. p, T
/~N Commonwerith Edison
) One First National Plaza. Chictgo, lihnois
[
,T-Address Reply to: Post Office Box 767
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/ ' Chicago. Illinois 60690 January 31, 1985 Mr. Harold R. Denton, Director Office'.of' Nuclear Reactor Regulation U.S. Nuclear Regulatory Commission
. Washington, DC 20555
Subject:
. Byron Generating Station Units 1 and 2 Braidwood Generating Station Units 1 and 2 Startup Tests NRC Docket Nos.- 50-454/455 and 50-456/457
Dear Mr. Denton:
This letter provides an advance copy of a revised page for
.the Byron /Braidwood FSAR.
Prompt NRC. review is needed because a change to the startup test program is involved.
Enclosed is a revision to FSAR table 14.2-82, the startup test' abstract on the power reactivity coefficient measurements.
The acceptance criterion is now expressed in terms of the power reactivity coefficient verification factor.
These-changes have already been discussed with the-NRC staff and we undr.rstand that they are acceptable.
Very truly yours, ke fA/ W T. R. Tramm.
Nuclear Licensing Administrator 1m cc:
Byron Resident Inspector 9705N y
bo 8502110297 8 31 1 I
-PDR ADOCK O 454 P
PDR.
y
- o, B/B-FSAR r
'(I TABLE 14.2-82
. POWER REACTIVITY COEFFICIENT MEASUREMENT (Startup Test)
-Plant Condition or Prerequisites During power level changes at approximately 30%, 50%, 754, and.904 reactor. power.
Test Objective
~
To verify the power coefficient of reactivity.
l Test Summary During power' level changes when the reactivity effects of xenon can be adequately accounted for, measurements will be made of. reactor power and associated reactivity changes as follows:
_- :g'
, Reactor thermal power will be determined using calo-
~ rimetric data.
Associated reactivity changes will i-be measured by the response of T,yg and delta T l
-recorders.
. The power coefficient of reactivity will tue verified from these measurements.
~
Acceptance Criteri_a 1
The absolute value of the difference between the absolute value of the measured powe: coefficient verification factor and the absolute value of the predicted power coefficient verification factor is less than or equal to 0.5 degrees farenheit per percent power.
D 4
L 14.2-54
.