ML19339A764
| ML19339A764 | |
| Person / Time | |
|---|---|
| Site: | Yankee Rowe |
| Issue date: | 07/02/1976 |
| From: | Schwencer A Office of Nuclear Reactor Regulation |
| To: | Groce R YANKEE ATOMIC ELECTRIC CO. |
| References | |
| NUDOCS 8011040751 | |
| Download: ML19339A764 (4) | |
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2976 DOCKET File (50-29)V NRC PDR Local PDR ORB #1 Reading Docket No. 50-29 JRBuchanan TBAbernathy KRGoller TJCarter ASchwencer ABurger Yankee Atomic Electric Company SMSheppard ATIN: Mr. Robert 11. Groce JTCollins Licensing Engineer TVerdery OELDX3%
20 Turnpike Road
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Westboro, Massachusetts 01581 OI6E(3)
ACRS(16)
Gentlemen:
We have completed our preliminary review of your June 2,1976 submittal which contains information for the purpose of evaluating Yankee-Rowe's compliance with Appendix I to 10 CFR Part 50.
We find that we need the additional info mation identified in the enclosure to this letter to con-tinue our review. "We request that you pavide the additional infomation within 90 days of receipt of this letter.
. We acknowledge your comitment 'that you will provide the information concerning the radiological dose analyses by August 6,1976.
Sincerely,
.$E& signed by A. Schwencer, Chief Operating Reactors Branch #1 Division of Operating Reactors
Enclosure:
Request for Additional Information ec w/ enclosure:
See next page ORB #1 ORB #3 ORB #1 on.e.,
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ABurger:dc ASchwencer 7/2/76.[j{,
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July 7 1976 Yankee Atomic Electric sepany e
e cc: Mr. Donald G. Allen, President Yankee' Atomic Electric Co=pany e
20 Turnpike Road Westboro, Massachusetts 01581
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Greenfield Public Library 402 Main Street-Greenfield, Massachusetts 01581 o
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REQUEST FOR ADDITIONAL INFORMATION YANKEE NUCLEAR POWER STATION (YANKEE-ROWE)
DOCKET NO. S0-29 1.
Provide the description of the Turbine Building Exhaust System, including flow rate, velocity, relative temperatute difference between exhaust effluent and ambient air, and size and shape of the flow orifice.
2.
Indicate if each effluent release point is equipped with diffusers or spreaders.
3.* Describe in greater detail the straight-line airflow model used in the calculations, including all equations used.
Discuss the validity and accuracy of the model as it was applied relative to this site and region.
4.
Provide the site specific recirculation correction factors which you are developing, including a detailed description of the methodology used. Substantiate their applicability to the site region.
5.
Discuss the representativeness of the meteorological data used relative to the types of radioactive' releases-analy:ed.
6.
Provide the rationale for assuming a mixed release' mode for the primary vent stack releases.
7.
Provide available wind speed and direction data from the 140 ft.
level of the meteorological tower for the October 1,1971-September 31, 1972, period if available.
8.
The size of the first wind speed class (0-3 mph) in Table QII.6-1, is too large to obtain reliable X/Q estimates.
The first wind speed class in Table QII.6 needs to be amended to reflect.only calm conditions (defined as wind speeds below the starting speed of the vane or anemometer whichever is greater).
The second wind speed class would then entail the starting speed to 3 mph, etc. See Regulatory Guide 1.111 for recommendations on the handling and distribution of calms.
- Refers to question in enclosure 2 to our letter of February 19, 1976.
2-f 9.
The information provided concerning the representativeness of the onsite data for the October 1, 1971-September 31, 1972 period with respect to onsite and near site atmospheric transport and diffusion conditions and expected long term conditions at and near the site is inadequate. Provide. sufficient meteorological data from repre-sentative offsite location (s) for a minimum 10-year data period and for the. concurrent period to onsite data collection. This presenta-tion should include at least the following information on a monthly basis:
(1) Wind speed and wind direction (wind roses)
(2) Atmospheric stability (3) Precipitation 10.
Provide a schedule for upgrading the onsite meteorological program to meet the recommendations of Regulatory Guide 1.23 as you indicated on page II-3.
Include a detailed description of the proposed system.
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