ML19274D355
| ML19274D355 | |
| Person / Time | |
|---|---|
| Site: | Arkansas Nuclear  |
| Issue date: | 01/15/1979 |
| From: | David Williams ARKANSAS POWER & LIGHT CO. |
| To: | Stolz J Office of Nuclear Reactor Regulation |
| References | |
| 2-019-9, 2-19-9, NUDOCS 7901230238 | |
| Download: ML19274D355 (2) | |
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<O ARKANSAS POWER & LIGHT COMPANY POST OFFICE BOX 551 LITTLE ROCK. A7 KANSAS 72203 (501) 371-4000 January 15, 1979 2-019-9 Director of Nuclear Reactor Regulation ATFN:
Mr. J. F. Stolz, Chief Light Water Reactors Branch #1 U. S. Nuclear Regulatory Commission Washington, D. C.
20555
Subject:
Arkansas Nuclear One - Unit 2 Docket No. 50-368 License No. NPF-6 Fire Protection (File:
2-1510, 2-2040)
Gentlemen:
As required by the Fire Protection Safety Evaluation Report for ANO-2, the following information is provided to describe modifications performed.
These details could not be provided 90 days prior to implementation due to their implementation date being so soon after SER issuance. The following items refer to Table 3.1 of the ANO-2 Fire Protection SER.
Item 3.4 Marinite board has een installed over the red division tray. Green division cables in che vicinity of the red tray have been coated with Carboline.
Item 3.8 The trays which formed a combustible bridge between the redundant diesel generator cables have been covered by Marinite board.
Item 3.9 Two of the three nonsafety-related trays which presented a combustible pathway between redundant diesel generator cables have been covered with Marinite board. We chose to coat the third tray with Carboline as it is routed in a more congested area.
Item 3.10 As stated in Section 5.4.6 of the ANO-2 Fire Protection SER, we were to provide fire barriers where redundant safe shutdown cables cross common u
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Mr. J. F. Stolz, Chief January 15, 1979 cable trays. When we made this commitment, we were under the mistaken impression that these cables were routed in proximity to each other.
As shown in the attached sketch, this is not the case. EB2228 follows the ceiling and wall while EB1191 is less than three feet off the floor.
For this reason we do not intend to provide fire barriers in this zone.
Very truly yours, Y-Daniel H. Williams Manager, Licensing DilW: MOW:ce Attachment
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