ML19220B308
| ML19220B308 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 04/28/1975 |
| From: | Tedesco R Office of Nuclear Reactor Regulation |
| To: | Moore V Office of Nuclear Reactor Regulation |
| References | |
| NUDOCS 7904250620 | |
| Download: ML19220B308 (2) | |
Text
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Doc ket No.30-320 pt 9
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V. Moore,.aussistant Director for Ligh: '4ater Reactors, Group 2, L ROU';D ~'40 QUEST!0NS FOR THRIZ MILE ISI.AND UNIT 2 Plant Name: Three ' tile Island, Unit 2 Licenaing Stage: OL Docket Number: 50-32C Responsible Branch:
L'JR 2-2 Project Leader:3. '4ashburn Requested Co=pletien Date: April 23. 1975 Descri;' tion of Response: Round Two Questions
'4e have reviewed the anended FSAR for Three Mile Island, Unit 2, and we find that the responses to our Round One questions were not adequate.
Consequently, we have taken a position concern 1=:; the decontamination factor of charcoal adsorber beds used in ventilation syste=s.
Enclosed is our position and the additional infor=ation va vill need to cen:plete our evaluation.
'a's vill need the additional infor~.ation by July 11, 1975 to =aet our schedule.
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Robert L. Tedesco, Assis tant Director for Containment Safety Division of Tec uical Review Office of Nuclear Reactor Regulation
Enclosure:
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010.10 Your response to ite: 010.5 states that 2-inch bed depths will be used for charcoal adsorbers in ventilation systens.
It is our position that 2-inch charcoal adsorbers provide a removal efficiency of less than 3CT. at the expected iodine concentrations. You should co==it to provide suffi-cient charcoal at ea:h adsorber location for a DF of 10 for lodine re= oval over the service life of the adsorber.
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