ML20216C377
| ML20216C377 | |
| Person / Time | |
|---|---|
| Site: | Byron  |
| Issue date: | 03/05/1998 |
| From: | Graesser K COMMONWEALTH EDISON CO. |
| To: | Beach A NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| References | |
| BYRON-98-0075, BYRON-98-75, NUDOCS 9803160002 | |
| Download: ML20216C377 (3) | |
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p lly ron Generating Station 4 450 North Gernun Church Road l
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March 5, 1998 M()R)T'i ROUTING LTR:
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s Mr. A. B. Beach i
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Region III Administrator
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801 Warrenville Road O#
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SUBJECT:
Byron Nuclear Power Station Change in Scope of the B1R08 Hydrolazing Project NRC Docket Number 50-454, 50-455
REFERENCE:
Letter from Geoffrey E.
Grant, Director Division of Reactor Projects U.S. N.R.C.
to K. Graesser, Site Vice l
President Byron Station, Commonwealth Edison Company dated August 1, 1997 Lear Mr. Beach:
We are notifying you of a change in the scope of the BIR08 hydrolazing activities for Byron Station from that documented during the June 20, 1997 Predecisional Enforcement "qnference.
In the June 20, 1997 Predecisional Enforcement Conference, Byron Station Informed the NRC that the station would hydrolaze the containment floor drain system.
l After reviewing the scope of the project to inspect and hydrolaze the RF system during BIR08, it was determined that the floor drains in both the Regenerative Heat Exchanger and Excess Letdown Heat Exchanger rooms would not be inspected and hydrolazed. Additionally, the floor drain located in the Incore Instrumentation room was not hydrolazed during the outage as planned due to it being plugged, l
l Access to the containment floor drains in the Regenerative and Excess l
Letdown Heat Exchanger Rooms is limited at this time based on ALARA l
concerns. The areas are considered "High Radiation" areas due to elevated dose rates. Additicnally, access to these areas is difficult, requires the remove: of floor plugs, and would require designation of each area ar
.onfined space. As for the drain I
located in the Incore Ins..amentation room, a temporary alteration was installed in the cleanout line located in the room to allow for sufficient water flow into the leak detection sump. This flowpath C
was verified to be functional by running water through the cleanout line. Future actions for the containment floor drains in the Regenerative and Excess Letdown Heat Exchanger rooms are being evaluated for Unit 1 and Unit 2.
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BYRON 98-0075 March 5, 1998 Page 2 Instrumentation room, a temporary alteration was installed in the cleanout line located in the room to allow for sufficient water flow into the leak detection sump.
This flowpath was verified to be
{
functional by running water through the cleanout line.
Future l
actions for the containment floor drains in the Regenerative and Excess Letdown Heat Exchanger rooms are being evaluated for Unit 1 and Unit 2.
Il you have any questions related to this matter, please contact Daryl Prisby at (815)234-5441 extension 2659.
i Sincerely, K. L. G at ser Site Vice President Byron Nuclear Power Station KLG/DP/clb cc:
E.
W.
Cobey, Senior Resident Inspector, Byron J.
B.
Hickman, Byron Project Mananger - NRR M.
J.
Jordan, Reactor Project Chief - RIII F. Niziolek, Division of Engineering - IDNS i
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