ML19289D886
| ML19289D886 | |
| Person / Time | |
|---|---|
| Site: | FitzPatrick  |
| Issue date: | 03/09/1979 |
| From: | Leonard J POWER AUTHORITY OF THE STATE OF NEW YORK (NEW YORK |
| To: | Polk P Office of Nuclear Reactor Regulation |
| References | |
| JAFP-79-128, NUDOCS 7903190330 | |
| Download: ML19289D886 (7) | |
Text
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POWER AUTHORITY OF THE STATE OF NEW YORK J AMES A. FITzPATRICK N UCLE A R POWER PLANT S
JOHN D. LEONARD, JR.
P.O. box 41 Resident Manager Lycoming, New York 13093 h! arch 9, 1979 31s-3N-3840 JAFP-79-128 Mr. Philip Polk US Nuclear Regulatory Commission Operating Reactors Branch Mail Station Room 338 Washington, D. C. 20555 RE: James A. FitzPatrick Nuclear Power Plant Docket No. 50-333 Amendment to Environmental Technical Specifications - Supporting Information
Dear Mr. Polk:
Attached is the supporting information requested by Mr. James Wilson. This information is being supplied as requested to help in further evaluation of our original submittal of June 1,1977 requesting a change to Technical Specification, Appendix B, under Docket No. 50-333, License DPR-59.
If there are any questions regarding the attached, please do not hesitate to contact us.
Very truly yours, h
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J m. Leonard, Jr.
JDL:BG:jjh Attachment Re ' dent Manager N
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P. W. Lyon J. Blake R. Pasternak R. Burns R. Rajaram G. Wilverding DCC
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SUBMISSION IN SUPPORT OF ENVIRONMENTAL TECilNICAL SPECIFICATION CIIANGE FOR JAMES A. FITZPATRICK NUCLEAR POWER PLANT DOCKET 50-333 MARCil 1979 JAMES A. FITZPATRICK NUCLEAR POWER PLANT POWER ALTril0RITY OF Tile STATE OF NEW YORK
SUPPORTING INFORMATION Since the beginning of Electrical Power Generation at the James A. Fitz-Patrick Nuclear Power Plant (JAFNPP), lake temperature structure surveys have been performed in Lake Ontario.
These surveys have resulted in an extensive data base concerning the lake temperature structure and provided the Authority with the information required to determine any changes to natural stratification that occurs within the lake hydrology due to the operation of JAFNPP.
Lake Ontario is a dimictic lake (having spring and fall turnovers) with a maximum surface temperature of 77 F in the summer.
In the summer, the lake becomes vertically stratified. A warm, readily circulating upper layer (epilimnion) and a cold undisturbed lower layer 0typolimnion) develop with a zone of rapid temper-ature change existing between the two layers of water.
In the fall the upper water cools and becomes vertically isothermal.
In the winter the temperature gradient remains small and the vertical temperature is isothermal.
In the spring the lake begins a mixing process which is a predictable phe-nomenon starting after the winter pack ice melt, known as the spring turnover.
Thermal profiles were obtained at the 100-foot contour of the NMPN, FITZ, and NMPE transects each week during the period that the aquatic monitoring has been performed. Examination of these temperature profiles and of the temperature of surface and bottom strata reveal the presence of cold hypolimnetic water in-trusion during the summer months.
Further analysis of thermal data shows that the lake profiles in the vicinity of the Nine Mile Point promontory reflect those natural processes described in Section 2.5.2 of the JAFNPP Final Environmental Statement.
The general circulation of the lake can be documented by observations collected over a long period of time (sampling season 1975-1979). The circulation patterns that are observed at any given time, however, are more complex as a result of the transient wind distribution and the lakes response to the changing wind pattern.
SUPPORTING INFORMATION Page Lake area adjacent to large features such as the coastal projections respond slowly to wind changes whereas near to shore areas respond more rapidly.
Additionally, the deeper the current, the slower the response to the wind pro-duced current. A shift in current, as a result of wind changes, eventually change the turface slope and the temperature field, forcing an alteration in much of the lake's circulation pattern.
In conclusion, it has been documented that the seasonal thermal cycle in the vicinity of Nine Mile Point is not disturbed by either the Nine Mile Point or James A. FitzPatrick Power Stations during their past history of operation.
Short-term surface and bottom temperature variations can be interpreted as the result of variations in meterlogical conditions and cold water intrusions, respectively. No mean annual differences were found among transects at the different contour sampling locations.
The lack of any identifiable plant effects on the natural lake stratification processes is sufficient evidence that plant operation has not, and will not, affect natural lake thermal processes in the future and having performed Section 4.1.3 of General Aquatic Ecology Study (GAES), (Lake Temperature Structure) for a time period in excess of the two years specified in Section 4.1.1. A.1 (specification),
it has been determined that the Lake Thermal Structure Program Section 4.1.3 of the James A. FitzPatrick Nuclear Power Plant Environmental Technical Specification (ETS), Appendix B, can be eliminated.
It should be noted that thermal monitoring of the plant effluent will continue to be collected as required by Section 2.1 of the JAFNPP ETS, Appendix B and NPDES /SPDES Permit.
SUPPORTING INFORMATION Page The objective of the Technical Specification for thermal plume mapping is the determination of the shape and size of the discharge plume under various environmental conditions. The specification requires that bot h temperature measurements along transects and a dye release study be part of each survey.
At the end of two years of surveys, an evaluative report containing results and analyses is required for submission to the Directorate of Licensing.
The study and subsequent report fulfilled the specification. Surveys were conducted in 1976 and 1977. The methods and design of each survey are described in detail in individual survey reports by Aquatec, Inc. (1976 and 1977). The reduced data and analyses as tables, maps, and descriptions from both the temperature measurements and the dye diffusion measurements are avail-able in Stone and Webster (1978).
SUMMARY
OF THERMAL PLUME MAPPING RESULTS 1)
Weak stratification prevailed during most of the year with surface to bottom differences ranging from near 0 to 5.5 F.
2)
Solar heating on calm days and wind-driven upwelling cause short-term departures from the weakly stratified condition.
- 3) The plume sinks when the ambient temperature declines to below 39.2 F.
- 4) The direction and velocity of the current determine the length and shape of the plume but the higher surface AT's (3 - 4 F) attributable to JAF alone are confined to the immediate vicinity of the diffuser.
AEC staff predicted that the applicant's projections of very limited areas of elevated temperature would be qualitatively correct (FES, p. 3-21).
The pre-diction was proven true. Staff predicted that the jet of the diffuser could entrain sufficient cooler mid-depth to bottom water to create surface " cool spots" (FES, p. 3-24) to " break through" the influence of the Nine Mile Point plume. The surveys did find areas around the JAF plume of lower than ambient temperature.
Both the temperature measurements and the dye diffusion studies
SUPPORTING INFORMATION Page indicated that shoreline currents would elongate the plume, as both the Applicant and the Staff predicted (figures 3.10-3.1S, FES). The conclusion of the Applicant and the Staff that AT's of 3-40 F. would be very limited in area and that the thermal discharge would be biologically inconsequential has been proven true (Stone and Webster, 1978: 316 (a) Demonstration). The specification has been fulfilled.
Page,.
REFERENCES AQUATEC, INC.
1976a. First Operational liydrothermal Survey, June 4 and 13, 1976, James A. FitzPatrick Nuclear Power Plant.
AQUATEC, INC.
1976b. Second Operational I!ydrothermal Survey, August 19 amd 20, 1976, James A. FitzPatrick Nuclear Power Planc.
AQUATEC, INC.
1976c. Third Operational flydrothermal Survey, October 7 and 8,1976, James A. FitzPatrici Nuclear Power Plant.
AQUATEC, INC.
1977a.
Fourth Operational Ilydrothermal Survey, April 13 and 14, 1976, James A. FitzPatrick Nuclear Power Plant.
AQUATEC, INC.
1977b.
Fifth Operational liydrothermal Survey, June 14, 1977, James A. FitzPatrick Nuclear Power Plant.
AQUATEC, INC.
1977c. Sixth Operational flydrothermal Survey, November 2,1977, James A. FitzPatrick Nuclear Power Plant.
NFOMIC ENERGY C05NISSION 1973.
Final Environmental Statement Related to Operation of James A. FitzPatrick Nuclear Power Plant.
LAWLER, MATUSKY and SKELLY ENGINEERS 1975.
Nine Mile Point Aquatic Ecciogy Study Lb6 Projects Numbers 191-31, 32, 33 LAWLER, MATUSKY and SKELLY ENGINEERS 1976.
Nine Mile Point Aquatic Ecology Study LMS Projects Numbers 191-40, 41, 42 POWER AUril0RITY OF TIIE STATE OF NEW YORK 1977.
316(a) Demonstration, James A. FitzPatrick Nuclear Power Plant Permit No. NY 0020109.
STONE AND WEBSTER 1978.
Final Report - Postoperational Hydrothermal Surveys, June 1976-November 1977 for James A. FitzPatrick Nuclear Power Plant, Power Authority of the State of New York TEXAS INSTRUMENTS INCORPORATED ECOLOGICAL SERVICES 1977.
Nine Mile Point Aquatic Ecology Studies