ML20009F377
| ML20009F377 | |
| Person / Time | |
|---|---|
| Site: | Maine Yankee |
| Issue date: | 07/29/1981 |
| From: | Requa G Office of Nuclear Reactor Regulation |
| To: | Houston R Office of Nuclear Reactor Regulation |
| References | |
| NUDOCS 8107310081 | |
| Download: ML20009F377 (1) | |
Text
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DISTRIBUTION: gi c05cEet n le' m TNovak Docket No. 50-309 NRC PDR I&E-3 L'PDR RAClark NSIC PMKreutzer-3 TERA GRequa MEMORANDUM FOR: F, Wayne Housten Chief s-ident Evaluation Branch Division of Systems Integration M t@f
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Robert A. Clark, Chief
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19-JUL 2 919815 12 FROM:
Glode Requa, Project Manager I-u.s. mem im.um Operating Reactors Branch #3 s
Division of Licensing b
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SUBJECT:
MAINE YANKEE - EXCLUSION AREA BOUNDARY h RIC DISPER5 ION FACTOR (X/Q) CALCULATIONS Maine Yankee has submitted their accident X/Q value of 5.36 x 10'4 sec/m,
3 for 0-2 hours and 610 m Exclusien area Boundary, which was obtained by applica application of the SKIRON Co4e, described in attachment 1, to site meteoro-logical data spannir.g from January to December 1977 which was adjusted _
to take account of the change in apceptable exceedance probability from the value of 0.6% called for in the draft Regulatory Guide 1.XXX at the
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4 timeethe calculation was orginally performed to the current acceptable cxceedance probability of 0.5%, specified in Regulatory Guide 1.145. documents the atmospheric dispersion factor calculation using 1977 data and attachment 3 documents the atmospheric dispersion factor calculation using 1979 meteorological data.
Please have attachments 1, 2 & 3 reviewed and provide a written deter-mination on the adequacy add accuracy of the Maine Yankee accident X/Q methodology and results by August 14, 1981. The attachments should be returned to me at that time, TAC No. 46680 should be used for this t
effort.
Original 4: nod by:
Glode Requa, Project Manager Operating Reactors Branch #3 Division of Licensing Attachments:
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