ML20126H387
| ML20126H387 | |
| Person / Time | |
|---|---|
| Site: | Wolf Creek, 05000000 |
| Issue date: | 02/15/1985 |
| From: | Srinivasan M Office of Nuclear Reactor Regulation |
| To: | Youngblood B Office of Nuclear Reactor Regulation |
| Shared Package | |
| ML20126H338 | List: |
| References | |
| FOIA-85-160 NUDOCS 8506100324 | |
| Download: ML20126H387 (1) | |
Text
_
/pis,,*%
UNITED STATES,
Ih i,;
NUCLEAR REGULATORY dOMMISSION
' jj WASHINGTON, D. C. 20$55 o[.
- W 6.**
FEB 151985 h
~
,MEMORANhUMFOR:'B..J.Youngblood, Chief
- Licensing Branch No. 1 Division of Licensing FROM:
M. Srinivasan, Chief Power Systems Branch Division of Systems Integration
SUBJECT:
WOLF CREEK PROPOSED FSAR CHANGE The Power Systems Branch has reviewed the change proposed to the Wolf Creek FSAR by Kansas Gas and Electric Company's letter dated January 14, 1985.
Specifically, the change inserts the following wording in FSAR Section 8.3.1.4.1.1.e:
o In cases of open trays containing safety-related cables and c
totally enclosed conduits containing non-safety related cables, -
the safetf design basis is to protect the safety related cables
-Q versa.
In consideration of this limit, enclosing the non-safety from failure of the non-safety related circuits, and not vice-
,L circuits in raceway and maintaining at leastJ-inch separation provides an acceptable level of protection. The conduit can containonlyalimitedquantityofcombustiblematerial(cable p
i insulation & jacket).- All SNUPPS cables, including those used D
for non-safety related circuits,.are qualified to IEEE-383 and meet the flame-retardance requirements specified therein; the 9
cables will not support combustion.
Furthermore, there is insufficient oxygen inside the conduit to support combustion of more than fraction of the available material.
i c
E Based'on these considerations, it is established that 1-inch 4
separation between a conduit containing non-safety related circuits' l
1s sufficient to assure that any failure within the non-safety i
related circuits will not propogate into and compromise the integrity of the safety related circuits.
We have reviewed the justification for the proposed change and find it acceptable.
f, f
ft G6 i Wh_1 M. Srinivasan, Chief Power Systems Branch mig 4e50415 Division of Systems Integration
{
i r
STEPHEN 85 -1g pg
)
1
~,, -. -