ML20071J759
| ML20071J759 | |
| Person / Time | |
|---|---|
| Site: | Seabrook  |
| Issue date: | 04/22/1982 |
| From: | Van Der Hoven COMMERCE, DEPT. OF, NATIONAL OCEANIC & ATMOSPHERIC |
| To: | Spickler I Office of Nuclear Reactor Regulation |
| References | |
| CON-NRC-03-81-099, CON-NRC-3-81-99 NUDOCS 8204270362 | |
| Download: ML20071J759 (3) | |
Text
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U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration
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ENVIRONMENTAL RESEARCH LABORATORIES Rockville, Maryland 20852 R32 00-40 April 22, 1982 co e
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Mr. Irwin Spickler 8
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Dear Mr. Spickler:
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In partial response to Task Order No.1 of Interagency Agreement No. NRC-03-81-099, enclosed pleaca find my evaluation and coninents on the following:
Seabrook Nuclear Station Units 1 and 2 Public Service Company of New Hampshire Final Safety Analysis Report Section 2.3.5 Long-Term (Routine) Diffusion Estimates:
Objective and Calculations At your convenience I will be pleased to discuss this evaluation with you and your staff.
Sincerely, Sef
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Isaac Van der Hoven Air Resources Laboratories Enclosure cc:
E.H. Markee, ONRR/NRC
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Comments on Seabrook Nuclear Station Units 1 and 2 Public Service Company of New Hampshire Final Safety Analysis Report Section 2.3.5 Long-Term (Routine) Diffusion Estimates Objective and Calculations Prepared by Isaac. Van der' Hoven Air Resources Laboratories National Oceanic-and Atmospheric Administration April 21, 1982 It should be noted that the section being reviewed pertains to the estimation of downwind doses from routine reactor emissions to the atmo-sphere'throughout the year. Thus the use of sector-averaged diffusion models, such as Equation 10, are appropriate. When a choice was available, the report has tended towards the conservative (high concentration values) approach. Examples are:
- 1) using the plume rise model giving the smallest plume rise; 2) assuming that no unlimited mixing takes place and that the annual average daytiae and nighttime mixing depth prevails during these two parts of the day; and 3) assuming that diffusion in the unmodified marine air is always Type F.
The solar radiation criteria for the development of a TIBL is not supported by any reference.
Is solar radiation actually measured at the site? Will inland cloudiness hinder the development of a TIBL?
The TIBL height model (Eq. 35) has little verification by measurement.
The sane holds true for the Brookhaven TIBL model (NUREG/CR-0936).
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l U.S. DEPARTMENT OF COMMERC2 j
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E.W 9CNMENTf.L RESEAACH LA50.31.70.%3 AIR RESOURCES LABORATOPIES April 15, 1982 AEEEEEEEEEEI i
This is to inform you that effective April 19, 1982, the Air Resources Laboratories of NOAA will be located at the following address:
National Oceanic and Atmospheric Administration Air Resources Laboratories, 8th Floor 6010' Executive Boulevard Rockville, MD 20852 Telephone Nos:
443-8276 443-8811 t
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10TH ANNIVERSARY 1970-1980
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