ML20236W554
| ML20236W554 | |
| Person / Time | |
|---|---|
| Site: | Byron  |
| Issue date: | 07/30/1998 |
| From: | Graesser K COMMONWEALTH EDISON CO. |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| 50-454-94-25, 50-455-94-25, BYRON-98-0225, BYRON-98-225, NUDOCS 9808060060 | |
| Download: ML20236W554 (2) | |
Text
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Commonwealth likson Conipany 11)ron Generating Nation 4 450 North Gernun Churt h Road e
113 ron,11. 61010-979 i Tel 815U 4-514 l July 30, 1998 I
LTR:
BYRON 98-0225 FILE-1.10.0101 l
l U.S. Nuclear Regulatory Commission Washington, DC 20555 i
ATTENTION: Document Control Desk
SUBJECT:
Environmental Qualification of Okonite Splices - Byron, I
Units 1 and 2 Byron Nuclear Power Station, Units 1 and 2 Facility Operating Licenses NPF-37 and NPF-66 NRC Docket Numbern:
50-454 and 50-455
REFERENCE:
- 1. R. Asra (USNRC) to D.
L.
Farrar letter dated September 8, 1994
- 2. D. Saccomando to US Nuclear Regulatory Commission letter dated January 26, 1995 l
[
- 3. D. Saccomando to US Nuclear Regulatory Commission letter l
dated July 25, 1995
- 4. R. Assa (USNRC) to D. L. Farrar letter dated November 13, 1995 A safety evaluation (SE) issued by the NRC staff on September 8, 1994
(
Reference:
1), concluded that previous Comed analysis had not demonstrated qualification for submergence for Okonite tape splices at l
Braidwood Station. An Unresolved Item (UPI) 50-454/455-94025-03 was initiated by the NRC Senior Resident Inrpector to track tnis issue at Byron Station.
In References 2 and 3, Comed provided an analysis to demonstrate environmental qualification (EQ) of Okonite tape splices for
" local submergence" due to a line break accident at Braidwood Station.
In Reference 4, the NRC staff determined that, for the current application at Draidwood Station, Comed had demonstrated qualification of Okonite tape splices for the potential submergence condition.
The only tape splices that were found to be acceptable were those at 3raidwood in power and control circuits located in junction and pull l' oxes.
J The application of Okonite tape splices at Byron Station is the same as 4
that at Braidwood Station.
Therefore, Comed proposes application of 1 f
~'\\
Reference 2 and 3 submittals and the safety evaluation (Reference 4) to m the resolution of the Unresolved Item for Byron Station.
- w w v -j 9800060060 900730 PDR ADOCK 05000454 G
PDR i
A Unicom (.omp.in)
L___ _ ___ ____. _ _ _ _ _
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4 e
f Byron Ltr. 98-0225 July 30,, 1998 Page 2 l
If your staff has army questins or comments concerning this letter, please refer them to Robin Colglazier at (815)234-5441 ext. 2609.
1 Respectfully,
[
s K.
L. Graes Site Vice President Byron Nuclear Power Staton KLG/RAC/rp cc:
NRC Regional Administrator - RIII Project Manager - NRR
]
Reactor Projects Chief - RIII Senior Resident Inspector, Byron
)
Office of Nuclear Safety - IDNS
)
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