ML20108B399
| ML20108B399 | |
| Person / Time | |
|---|---|
| Site: | Sequoyah  |
| Issue date: | 12/31/1995 |
| From: | TENNESSEE VALLEY AUTHORITY |
| To: | |
| Shared Package | |
| ML20108B390 | List: |
| References | |
| NUDOCS 9605030307 | |
| Download: ML20108B399 (46) | |
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b SEQUOYAH NUCLEAR PLANT i
RADIOLOGICAL IMPACT ASSESSMENT REPORT !
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Redi:logicalImpact Assrssment Sequoyah Nuclear Plant f 4 January- December 1995 Page 1 of 17 i
INTRODUCTION ,
Potential aoses to maximum individuals and the population around Sequoyah are calculated t
- for each quarter as required in Section 5.2 of the Offsite Dose Calculation Manual (ODCM). 7 Measured plant releases for the reporting period are used to estimate these doses. Dispersion of radioactive effluents in the environment is estimated using meteorological data and riverflow data measured during the period. In this report, the doses resulting from releases are described and compared to limits established for Sequoyah.
j DOSE LIMITS The ODCM specifies limits for the release of radioactive effluents, as well as limits for doses to f
! the general public from the release of radioactive effluents. These limits are set well below the +
l Technical Specification limits which govern the concentrations of radioactivity and doses !
permissible in unrestricted areas. This ensures that radioactive effluent releases are As Low As Reasonably Achievable.
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The limits for doses in unrestricted areas from airborne noble gases releases are: .
Less than or equal to 5 mrad per quarter and 10 mrod per year (per reactor unit) for gamma radiation,and Less than or equal to 10 mrad per quarter and 20 mrod per year (per reactor unit) for beta radiation. ,
The limit for the dose to a member of the general public in an unrestricted area from iodines and particulates released in airborne effluents is:
1 Less than or equal to 7.5 mrem per quarter and l 15 mrem per year (per reactor unit) to any organ. l The limit for doses to a member of the general public from radioactive material in liquid effluents released to unrestricted areas, is:
Less than or equal to 1.5 mrem per quarter and 3 mrem per year (per reactor unit) to the total body,and Less than or equal to 5 mrem per quarter and 10 mrem per year (per reactor unit) to any organ The EPA limits for total dose to the public in the vicinity of a nuclear power plant, established in the Environmental Dose Standard of 40 CFR 190, are:
Less than or equal to 25 mrem per year to the total body, less than or equal to 75 mrem per year to the thyroid,and Less than or equal to 25 mrem per year to any other organ, 1
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Radialogicciimpact Ass:ssment Sequoyah Nuclear Plant. ,
January - December 1995 Page 2 of 17 I
DOSE CALCULATIONS Estimated doses to the public are determined using computer models (the Gaseous Effluent Licensing Code, GELC, and the Quarterly Water Dose Assessment Code, QWATA). These :
models are based on guidance provided by the NRC (in Regulatory Guides 1.109,1.111 and '
l.113) for determining the potential dose to individuals and populations living in the vicinity of the plant. The area around the plant is analyzed to determine the pathways through which ,
the public may receive a dose. The doses calculated are a representation of the dose to a
" maximum exposed individual." Some of the factors used in these calculations (such as ingestion rates) are maximum values. Many of these factors are obtained from NUREG/CR-1004. The values chosen will tend to overestimate the dose to this " maximum" person. The expected dose to actualindividuals is lower. The calculated doses are presented in Tables 1 through 9.
r DOSES FROM AIRBORNE EFFLUENTS For airborne effluents, the public can be exposed to radiation from several sources: direct radiation from the radioactivity in the air, direct radiation from radioactivity deposited on the ground, inhalation of airborne radioactivity, ingestion of vegetation which contains radioactivity deposited frcm the atmosphere, and ingestion of milk and beef which contains radioactivity deposited from the atmosphere onto vegetation and subsequently eaten by milk and beef animals.
Airborne Discharae Points All releases from Sequoyah are considered ground-level releases. The ground-level Joint a Frequency Distribution (JFD) is derived from windspeeds and directions measured 10 meters above ground and from the vertical temperature difference between 10 and 46 meters, and ,
are presented for each quarterin Attachment 1.0 MeteoroloaicalData Meteorological variables at Sequoyah are measured continuously. Measurements collected include wind speed, wind direction, and temperature at heights of 10, 46, and 91 meters above the ground. Quarterly joint frequency distributions (JFDs) are calculated for each release point using the appropriate levels of meteorological data. A joint frequency distribution gives the percentage of the time in a quarter that the wind is blowing out of a 4
particular upwind compass sector in a particular range of wind speeds for a given stability
' class A through G. The wind speeds are divided into nine wind speed ranges. Calms are >
- dictributed by direction in proportion to the distribution of noncolm wind directions less than 0.7 '
m/s (1.5 mph). Stability classes are determined from the vertical temperature difference between two measurement levels.
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R:di:l:gicalImp ct Ass ssment Sequoyah Nuclear Plant January - December 1995 Page 3 of 17 External Exoosure Dose i Dose estimates for maximum external air dose (gamma-air and beta-air doses) are made for points at and beyond the unrestricted area boundary as described in the Sequoyah ODCM. l The highest of these doses is then selected. l Submersion Dose External doses to the skin and total body, due to submersion in a cloud of noble gases, are estimated for the nearest residence in each sector. The residence with the highest dose is !
then selected frorn all sectors. l Oraan Dose e
Doses to organs due to releases of airborne effluents are estimated for the inhalation, ground l contamination, and ingestion pathways. The ingestion pathway is further divided into four !
possible contributing pathways; ingestion of cow / goat milk, ingestion of beef, and ingestion of ;
vegetables. Doses from applicable pathways are calculated for each real receptor location ;
identified in the most recent land use survey. To determine the maximum organ dose, the doses from the pathways are summed for each receptor. For the ingestion dose, however, t only those pathways that exist for each receptor are considered in the sum, i.e., milk ingestion !
doses are included only for locations where milk is consumed without commercial preparation and vegetable ingestion is included only for those locations where a garden is identified. To conservatively account for beef ingestion, a beef ingestion dose equal to that for the highest -
unrestricted area boundary location is added to each identified receptor. For ground ,
contamination, the dose added to the organ dose being calculated is the total body dose !
calculated for that location, i.e., it is assumed that the dose to an individual organ is equal to the total body dose. ;
Doses from airborne effluents are presented in Tables 1 through 4.
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Rcdisl::gicalImp ct Asssssm2nt Sequoyah Nuclear Plant January - December 1995 Page 4 of 17 DOSES FROM LIQUID EFFLUENTS For liquid effluents, the public con be exposed to radiation from three sources: the ingestion of water from the Tennessee River, the intiestion of fish caught in the Tennessee River, and direct ;
exposure from radioactive material deposited on the river shoreline sediment (recreation).
The concentrations of radioactivity in the Tennessee River are estimated by a computer model I which uses measured hydraulic dato downstream of Sequoyah. Parameters used to '
determine the doses are based on guidance given by the NRC (in Regulatory Guides 1.109) for maximum ingestion rates, exposure times, etc. Wherever possible, parameters used in the dose calculation are site specific use factors determined by TVA. The models that are used to i estimate doses, as well as the parameters input to the models, are described in detail in the l Sequoyah Nuclear Plant ODCM.
Liavid Release Points and River Data Radioactivity concentrations in the Tennessee River are calculated assuming that releases in liquid effluenis are continuous. All roul ne liquid releases from Sequoyah, located at Tennessee River Mile 484, are made through diffusers which extend into the Tennessee River. It is assumed ;
that releases to the river through these diffusers will initially be entrained in one-fifth of the i water which flows past the plant. The QWATA code makes the assumption that this mixing !
condition holds true until the water is completely mixed at the first downstream dam, at Tennessee River Mile 471.0.
Doses are calculated for locations within a 50 mile radius downstream of the plant site. The maximum potential recreation dose is calculated for a location immediately downstream from the plant outfall. The maximum individual dose from ingestion of fish is assumed to be that calculated for the consumption of fish caught anywhere between the plant and the first j downstream darr, (Chickamauga Dom). The maximum individudi dose from drinking water is assumed to be that calculated at the nearest downstream public water supply (E.1. DuPont).
This could be interpreted as indicating that the maximum individual, as assumed for liquid releases from Sequoyah, is an individual who obtains all of his drinking water at E.1. DuPont, consumes fish caught from the Tennessee River between Sequoyah and Chickamaugo Dam, and spends 500 hours0.00579 days <br />0.139 hours <br />8.267196e-4 weeks <br />1.9025e-4 months <br /> per year on the shoreline just below the outfall from Sequoyah. Dose estimates for the maximum individual due to liquid effluents for each quarter in the period are presenied in Tables 5 through 8, along with the overage river flows past the plant site for the periods.
POPULATION DOSU Population doses for highest exposed organ due to airborne effluents are calculated for an estimated 1,060,000 persons living within a 50-mile radius of the plant site. Doses from external pathways and inhalation are based on the 50-mile human population distribution. Ingestion ,
population doses are calculated assuming that each individual consumes milk, vegetables, and meat produced with the sector annulus in which he resides. Doses from external pathways and inhalation are based on the 50-mile human population distribution.
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l Radialzgicciimpoet Ass 3ssment Sequoyah Nuclear Plant January- December 1995 Page 5 of 17 1
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- Population doses for total body and the maximum exposed organ due to liquid effluents are .
j calculated for the entire downstream Tennessee River Population. Water ingestion population l doses are calculated using actual population figures f,'r downstream public water supplies.
] Fish ingestion population doses are calculated assuming that all sport fish caught in the :
l Tennessee River are consumed by the Tennessee River population. Recreation population ;
doses are calculated using actual recreational data on the number of shoreline visits at j J
downstream locations. l Population dose estimates for airborne and liquid effluents are presented in Tables I through 8.
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Radi:lzgicclImp ct Asssssment Sequoyah Nuclear Plant January - December 1995 Page 6 of 17 1
DIRECT RADIATION I I
- External gamma radiation levels were measured by thermoluminescent dosimeters (TLDs) '
deployed around Sequoyah. The quarterly gamma radiation levels determined from these l TLDs during this reporting period averaged approximately 14.8 mR/ quarter at onsite stations and approximately 13.4 mR/ quarter at offsite stations, or approximately 1.4 mR/ quarter higher onsite than at offsite stations. This is consistent with levels reported at TVA's non operating ,
nuclear power plant construction sites where the average radiation levels onsite are generally 2-6 mR/ quarter higher than the levels offsite. This may be attributable to natural variations in environmental radiation levels, earth moving activities onsite, the mass of concrete employed in the construction of the plants, or other undetermined influences. Fluctuations in natural background dose rates and in TLD readings tend to mask any smallincrements which may be due to plant operations. Thus, there was no identifiable increase in dose rate levels attributable to direct radiation from plant equipment and/or gaseous effluents.
DOSE TO A MEMBER OF THE PUBLIC INSIDE THE UNRESTRICTED AREA BOUNDARY As stated in the Sequoyah Offsite Dose Calculation Manual, an evaluation of the dose to a member of the public inside the unrestricted area boundary is performed for a hypothetical TVA employee who works just outside the restricted area fence for an entire workyear (2000 l hours). Results from onsite TLD measurements for the calendar year in question indicate that the highest onsite TLD reading was 108 mrem. Using this value, and subtracting an annual background value of 55 mrem / year, and multiplying by the ratio of the occupancy times, the highest external dose to a member of the public inside the unrestricted area boundary is 24.7 mrem. The doses due to radioactive effluents released to the atmosphere calculated in this 1eport would not add a significant amount to this measured dose. This dose is well below the 10 CFR 20 annuallimit of 100 mrem.
TOTAL DOSE To determine compliance with 40 CFR 190, annual total dose contributions to the maximum individual from Sequoyoh radioactive effluents and all other nearby uranium fuel cycle sources are considered.
The annual dose to any organ other than thyroid for the maximum individualis conservatively 4 estimated by summing the following doses: the total body air submersion dose for each quarter, the critical organ dose (for any organ other than the thyroid) from airborne effluents for each quarter from ground contamination, inhalation and ingestion, the total body dose from liquid effluents for each quarter, the maximum organ dose (for any organ other than the thyroid) from liquid effluents for each quarter, and any identifiable increase in direct radiation dose levels as measured by the environmental monitoring program. This dose is compared to the 40 CFR 190 limit for total body or any organ dose (other than thyroid) to determine compliance.
The annual thyroid dose to the maximum individualis conservatively estimated by summing the following doses: the total body air submersion dose for each quarter, the thyroid dose from
R dirlagicclImp ct Ass;ssment Sequoyah Nuclear Plant January - December 1995 Page 7 of 17 airborne effluents for each quarter, the total body dose from liquid effluents for each quarter, the thyroid dose from liquid effluents for each quarter, and any identifiable increase in direct radiation dose levels as measured by the environmental monitoring program. This dose is compared to the 40 CFR 190 limit for thyroid dose to determine compliance.
Cumulative annual total doses are presented in Table 9.
Rcdislogicciimpact Ass:ssment Sequoyah Nuclear Plant January - December 1995 Pcge 8 of 17 Table 1 Doses from Airborne Effluents First Quarter individual Doses Pathway Dose Quarterly Percent of Location Limit Limit Sector / Distance External Gamma Air 1.44E-03 mrad 5 mrod 0.029 N/950 Beta Air 2.80E-03 mrad 10 mrod 0.028 Submersion Total Body 9.79E-04 mrod 10 mrad 0.010 SSW/2134 4
Skin 2.07E-03 mrad 10 mrad 0.021 Organ Doses Child / Thyroid 9.48E-03 mrem 7.5 mrem 0.13 SSW/2707 Child / Total Body 9.47E-03 mrem 7.5 mrem 0.13 Population Doses Total Body Dose 7.25E-02 man-rem Maximum Organ Dose (organ) 7.27E-02 man-rem (thyroid)
Population doses can be compared to the natural background dose for the entire 50-mile population of about 95.400 man-rem / year (based on 90 mremlyr for natural background).
Rcdi:ligicclimp::ct Asssssm:nt Sequoyah Nuclear Plant January - December 1995 Page 9 of 17 Table 2 Doses from Airborne Effluents Second Quarter Individual Doses Pathway Dose Quarterly Percant of Location Limit Limit Sector / Distance External Gamma Air 1.39E-03 mrod 5 mrad 0.028 N/950 Beta Air 2.83E-03 mrod 10 mrod 0.028 Submersion Total Body 9.00E-04 mrad 10 mrad 0.009 SSW/2134 Skin 1.93E-03 mrod 10 mrad 0.019 Organ Doses Child / Thyroid 9.40E-03 mrem 7.5 mrem 0.125 SSW/2707 Child / Total Body 9.40E-03 mrem 7.5 mrem 0.125 Population Doses Total Body Dose 7.24E-02 man-rem Maximum Organ Dose (organ) 7.24E-02 man-rem (thyroid)
Population doses can be compared to the natural Oackground dose for the entire 50-mile population of about 95.400 man-rem / year (based on 90 mremlyr for natural background).
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l Rcdi::logictlImpact AssIssment l Sequoyah Nuclear Plant January - December 1995 Page 10 of 17 Table 3 Doses from Airborne Effluents Third Quarter Individual Doses i Pathway Dose Qua'terly Percent of Location j l'mit Limit Sector / Distance External -
Gamma Air 2.56E-03 mrod 5 mrad 0.051 N/950 Beta Air 5.15E-03 mrad _10 mrod 0.052 Submersion Total Body 1.65E-03 mrod 10 mrod 0.017 SSW/2134 Skin 3.52E-03 mrad 10 mrad 0.035 l Organ Doses Child / Thyroid 3.77E-03 mrem 7.5 mrem 0.050 SSW/2707 Child / Total Body 3.68E-03 mrem 7.5 mrem 0.049 Population Doses Total Body Dose 2.65E-02 man-rem Maximum Organ Dose (organ) 2.71 E-02 man-rem (thyroid)
Population doses con be compared to the natural background dose for the entire 50-mile population of about 95.400 man-rem / year (based on 90 mremlyr for natural background).
Radi::logicciimpact AssIssment Sequoyah Nuclear Plant ;
January - December 1995 ;
Page 11 of 17
, Table 4 Doses from Airborne Effluents Fourth Quarter Individual Doses
. Pathway Dose Quarterly Percent of Location Limit Limit Sector / Distance External Gamma Air 5.68E-04 mrod 5 mrod 0.011 N/950 Beta Air 7.56E-04 mrad 10 mrod 0.008 Submersion Total Body 4.27E-04 mrad 10 mrad 0.004 SSW/2134 Skin 8.08E-04 mrod 10 mrad 0.008 Organ Doses Child / Thyroid 9.37E-03 mrem 7.5 mrem 0.125 SSW/2707 Child / Total Body 9.37E-03 mrem 7.5 mrem 0.125 Population Doses Total Body Dose 7.19E-02 man-rem Maximum Organ Dose (organ) 7.21 E-02 man-rem (thyroid)
Population doses can be compared to the natural background dose for the entire 50-mile population of about 95,400 man-remlyear (based on 90 mremlyr for natural background). l l
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Table 5 Doses from Liquid Effluents First Quarter Individual Doses Age Organ Dose Quarterly Percent of Group Limit Limit Adult Total Body 4.8E-03 1.5 mrem <1%
Liver 5.8E-03 5 mrem <1%
Teen Total Body 3.4E-03 1.5 mrem <1%
Liver 5.7E-03 5 mrem <1%
Child Total Body 3.0E-03 1.5 mrem <1%
Liver 5.8E-03 5 mrem <1%
Average Riverflow past SQN (cubic feet per second): 50,164 Pooulation Doses Total Body Dose 1.3E-01 man-rem Maximum Organ Dose (organ) 1.3E-01 man-rem (liver)
Population doses can be compared to the natural background dose for the entire 50-mile population of about 95,400 man-rem / year (based on 90 mremlyr for natural background).
R diologic:l Imp 2ct Ass ssment Sequoyah Nuclear Plant Januar/- December 1995 Page 13 of 17 Table 6 Doses from Liquid Effluents Second Quarter Individual Doses Age Organ Dose Quarterly Percent of Group Limit Limit Adult Total Body 2.1 E-02 1.5 mrem <1%
Liver 2.6E-02 5 mrem <1%
Teen Total Body 1.4E-02 1.5 mrem <1%
Liver 2.6E-02 5 mrem <1%
Child Total Body 1.2E-02 1.5 mrem <1%
Uver 2.6E-02 5 mrem <1%
Average Riverflow past SQN (cubic feet per second): 13,954 Population Doses Total Body Dose 7.0E-01 man-rem Maximum Organ Dose (organ) 7.3E-01 man-rem (liver)
Population doses con be compared to the natural background dose for the entire 50-mile population of about 95,400 man-rem / year (based on 90 mremlyr for natural background).
Rrdiologicd impact Ass:ssment Sequoyah Nuclear Plant January- December 1995 Page 14 of 17 Table 7 Doses from Liquid Effluents Third Quarter Individual Doses Age Organ Dose Quarterly Percent of Group Limit Limit Adult Total Body 3.8E-02 1.5 mrem 2.5 %
Liver 5.0E-02 5 mrem 1%
Teen Total Body 2.4E-02 1.5 mrem 1.6 %
Liver 5.1 E-02 5 mrem 1%
Child Total Body 1.3E-02 1.5 mrem <1%
Liver 4.6E-02 5 mrem <1%
Average Riverflow past SQN (cubic feet per second): 27,580 Population Doses Total Body Dose 6.0E-01 man-rem Maximum Organ Dose (organ) 2.6E-01 man-rem (thyroid)
Population doses can be compared to the natural backg.ound dose for the entire 50-mile population of about 95,400 man-remlyear (based on 90 mremlyr for natural background).
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Radi:logicalImpact Ass:ssment Sequoyah Nuclear Plant January - December 1995 Page 15 of 17 Table 8 Doses from Liqfid Effluents Fourth Quarter individual Doses Age Organ Dose Quarterly Percent of Group Limit Limit Adult Total Body 6.5E-03 1.5 mrem <1%
GIT 2.0E-02 5 mrem <1%
Teen Total Body 4.9E-03 1.5 mrem <1%
GlT 1.5E-02 5 mrem <1%
Child Total Body 4.1 E-03 1.5 mrem <1%
GlT/Uver 7.4E-03 5 mrem <1%
Average Riverflow past SQN (cubic feet per second): 40,181 Population Doses Total Body Dose 1.8E-01 man-rem Maximum Organ Dose (organ) 2.3E-01 man-rem (GIT)
Population doses can be compared to the natural background dose for the entire 50-mile population of about 95.400 man-remlyear (based on 90 mrem /yr for natural background).
Rcdiologiccllmpact Ass:ssment Sequoyah Nuclear Plant January- December 1995 Page 16 of 17 Table 9 Tolol Dose from Fuel Cycle First Second Third Fourth Dose Quarter Quarter Quarter Quarter Total Body or any Organ (except thyroid)
Total body air submersion 9.79E-04 9.00E-04 1.65E-03 4.27E-04 Critical organ dose (air) 9.48E-03 9.40E-03 3.77E-03 9.37E-03 ,
Total body dose (liquid) 4.8E-03 2.1 E-02 3.8E-02 6.5E-03 Maximum organ dose (liquid) 5.8E-03 2.6E-02 5.0E-02 2.0E-02 I
Direct Radiation Dose 0.0E-00 0.0E-00 0.0E-00 0.00E-00 Total 2.1E-02 5.7E 02 9.3E-02 3.6E 02 Cumulative Total Dose (Total body or any other orgon) mrem 2.1 E-02 Annual Dose Litnit (mrem) 2.50E+01 Percent of Limit <1% ,
1 Thyroid Dose (mrem)
Total body air submersion 9.79E-04 9.00E-04 1.65E-03 4.27E-04 l Thyroid dose (airborne) 9.48E-03 9.40E-03 3.77E-03 9.37E-03 l Total body dose (liquid) 4.8E-03 2.1 E-02 3.8E-02 6.5E-03 Thyroid dose (liquid) 4.0E-03 8.7E-03 6.2E-03 3.1 E-03 Direct Radiation Dose 0.0E-00 0.0E-00 0.0E-00 0.0E-00 Total 1.9E 02 4.0E-02 5.0E-02 1.9E-02 Cumulative Total Dose (Thyroid) mrem 1.3E-01 Annual Dose limit (mrem) 7.50E+0 l l Percent of Limit <1%
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RadiologicalImpact AssGssment Sequoyah Nuclear Plant January - December 1995 Page 17 of 17 .0
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f J2 INT PE"CENTAGE FR"QT CI E"1 F F PIP'$ F P"TV PY WIM FI"* CTIM FM STABILITY CLASS C (-1.7< DELTA T(=-1.5 C/100 M)
SEQUOYAN NUCLEAR PLANT JAN 1, 95 - MAR 31, 95 CIND WIND SPEED (MPB)
FINCTION CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4 >=24.5 TOTAL N 0.000 0.000 0.000 0.000 0.144 0.096 0.096 0.000 0.000 0.336 BNE 0.000 0.000 0.192 0.384 0.384 0.288 0.000 0.000 0.000 1.249 RE 0.000 0.000 0.192 0.384 0.048 0.048 0.000 0.000 0.000 0.673 ENE 0.000 0.000 0.096 0.000 0.000 0.000 0.000 0.000 0.000 0.096 E 0.000 0.000 0.096 0.000 0.000 0.000 0.000 0.000 0.000 0.096 ESE 0.000 0.000 0.000 0.048 0.000 0.000 0.000 0.000 0.000 0.044 SE 0.000 0.000 0.000 0.192 0.000 0.000 0.000 0.000 0.000 0.192 SSE 0.000 0.000 0.000 0.048 0.048 0.000 0.000 0.000 0.000 0.096 S 0.000 0.000 0.000 0.096 0.048 0.000 0.000 0.000 0.000 0.144 SSW 0.000 0.000 0.048 0.096 0.481 0.048 0.000 0.000 0.000 0.673 EW 0.000 0.000 0.000 0.240 0.192 0.144 0.000 0.000 0.000 0.577 CSW 0.000 0.000 0.000 0.000 0.048 0.048 0.000 0.000 0.000 0.096 0 0.000 0.000 0.000 0.048 0.048 0.048 0.000 0.000 0.000 0.144 WNW 0.000 0.000 0.000 0.096 0.000 0.048 0.000 0.000 0.000 0.144 LW 0.000 0.000 0.000 0.048 0.048 0.048 0.000 0.000 0.000 0.144 LNW 0.000 0.000 0.000 0.048 0.144 0.048 0.000 0.000 0.000 0.240 SULTOTAL 0.000 0.000 0.625 1.730 1.634 0.865 0.096 0.000 0.000 4.950 TOTAL NOURS OF VALID STABILITY OBSERVATIONS 2149 TOTAL NOURS OF STABILITY CLASS C 110 TOTAL NOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS C 103 TOTAL NOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2081 TOTAL NOURS CALM 0 METEOROLOGICAL FACILITY: SEQUOYAN NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 9.25 AND 45.99 METERS CIND SPEED AND DIRECTION MEASURED AT 9.73 METER LEVEL DATE PRINTED: 26-APR-95 MEAN WIND SPEED = 5.98 EOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS
_ . _ ._ m - m.. . .
J 3 I!!T PE*CENTATE FPTQTE7CIES CF CICS RPEE's T!Y CI!!'4 RIPEctIR7 FC*1 STABILITY CLASS D (-1.5( DELTA Tt=-0.5 C/100 5)
SEQUOYAN NUCLEAR PLANT JAN 1, 95 - MAR 31 ', 95 CICD WIND SPEED (MPN)
DIM CTION CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4 >=24.5 TOTAL 3 0.006 0.000 1.297 1.970 1.586 1.730 0.192 0.000 0.000 6.776 EWE 0.000 0.000 1.105 2.643 1.634 1.778 0.096 0.000 0.000 7.256 CE 0.000 0.048 0.721 0.625 0.384 0.048 0.000 0.000 0.000 1.826 ENE 0.000 0.048 0.336 0.096 0.000 0.000 0.000 0.000 0.000 0.481 0 0.000 0.000 0.048 0.948 0.000 0.000 0.000 0.000 0.000 0.096 CSE 0.000 0.000 0.096 0.048 0.048 0.000 0.000 0.000 0.000 0.192 SE 0.000 0.000 0.192 0.048 0.000 0.048 0.000 0.000 0.000 0.288 2SE 0.000 0.144 0.144 0.192 0.240 0.240 0.048 0.000 0.000 1.009 s 0.000 0.096 0.625 1.105 0.240 0.144 0.000 0.00G 0.000 2.210 SSW 0.000 0.240 1.201 3.412 1.057 0.336 0.048 0.000 0.000 6.295 SW 0.000 0.000 0.673 1.153 0.625 0.144 0.000 0.000 0.000 2.595 CSW 0.000 0.000 0.192 0.481 0.529 0.192 0.000 0.000 0.000 1.394 W 0.000 0.000 0.288 0.336 0.384 0.144 0.000 0.000 0.000 1.153 WNW 0.000 0.240 0.192 0.529 0.384 0.240 0.000 0.000 0.000 1.586
- NW 0.000 0.048 0.529 0.913 1.105 0.865 0.000 0.000 0.000 3.460 NRW 0.000 0.096 0.961 1.922 1.105 0.577 0.048 0.000 0.000 4.709 SU373TAL 0.000 0.961 8.602 15.521 9.322 6.487 0.432 0.000 0.000 41.326 TOTAL NOURS OF YALID STABILITY OBSERVATIONS 2149 TOTAL NOURS OF STABILITY CLASS D 886 TOTAL NOURS OF YALID WIND DIRECTION-WIND SPEED-STABILITY CLASS D 860 TOTAL ROURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2081 TOTAL NOURS CALM 0 l
METEOROLOGICAL FACILITY: SEQUOYAN NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 9.25 AND 45.99 METERS WIND SPEED AND DIRECTION MEASURED AT 9.73 METER LEVEL DATE PRINTED: 26-APR-95 MEAN WIND SPEED = 5.25 COTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS t I
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JTINT PE"CPRTA*3 FPEQ"~'FCIE3 CF CT4 S PE**% SY WIT'"2 FIPCTIT'1 F'n STABILITT CLASS E (-0.5< DELTA T(= 1.5 C/100 M)
SEQUOYAN NUCLEAR PLANT JAN 1, 95 - MAR 31, 95 EFIND WIND SPEED (MPN)
FIRECTION CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4 >=24.5 TOTAL M 0.067 0.288 1.970 2.066 0.625 0.192 0.048 0.000 0.000 5.257 NNE 0.090 0.769 2.259 1.346 0.432 0.192- 0.000 0.000 0.000 5.088 NE 0.011 0.192 0.192 0.096 0.048 0.000 0.000 0.000 0.000 0.540 ENE 0.004 0.048 0.096 0.000 0.000 0.000 0.000 0.000 0.000 0.148 E 0.004 0.096 0.048 0.000 0.000 0.000 0.000 0.000 0.000 0.148 ESE 0.003 0.096 0.000 0.048 0.000 0.000 0.000 0.000 0.000 0.147 SE 0.007 0.096 0.144 0.000 0.096 0.096 0.000 0.000 0.000 0.440 SSE 0.004 0.048 0.096 0.192 0.000 0.529 0.096 0.000 0.000 0.965 5 0.030 0.240 0.769 0.529 0.384 0.192 0.000 0.000 0.000 2.144 SSW 0.076 0.192 2.355 0.913 0.192 0.144 0.000 0.000 0.000 3.872 SW 0.056 0.288 1.586 1.634 0.144 0.144 0.000 0.000 0.000 3.852 WSW 0.010 0.144 0.192 0.240 0.048 0.000 0.000 0.000 0.000 0.635 W 0.007 0.000 0.240 0.288 0.144 0.096 0.000 0.000 0.000 0.776 WWW 0.011 0.000 0.384 0.432 0.144 0.000 0.000 0.000 0.000 0.973 NW 0.019 0.096 0.529 0.240 0.192 0.240 0.000 0.000 0.000 1.316 NNW 0.032 0.144 0.913 0.432 0.144 0.096 0.000 0.000 0.000 1.761 SUOTOTAL 0.432 2.739 11.173 8.457 2.595 1.922 0.144 0.000 0.000 28.063 TOTAL NOURS OF VALID STABILITY OBSERVATIONS 2149 TOTAL NOURS OF STABILITY CLASS E 598 TOTAL NOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS E $84 TOTAL NOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITT OBSERVATIONS 2081 TOTAL NOURS CALM 9 METEOROLOGICAL FACILITY: SEQUOYAN NUCLEAR PLANT STABILITT 8ASED ON DELTA-T BETWEEN 9.25 AND 45.99 METERS WIND SPEED AND DIRECTION MEA..AED AT 9.73 METER LEVEL DATE PRINTED: 26-APR-95 MEAN WIND SPEED = 3.77 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS
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JOINT PERCERTAGE FREQUE9CIES OF WIr'D SPEED DT UI?"D DIRECTICR FCR STABILITY CLASS A (DELTA T(=-1.9 C/100 M)
SEQUOYAN NUCLEAR PLANT APR 1, 95 - JUN 30, 95 UIED WIND SPEED (MPH)
CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4 >=24.5 TOTAL
'RISMCTION 0.000 0.000 0.000 0.138 0.322 0.092 0.000 0.000 0.000 0.551 N
0.000 0.000 0.092 0.643 0.322 0.230 0.000 0.000 0.000 1.286 WWE
'O.000 0.000 0.046 0.781 0.322 0.138 0.000 0.000 0.000 1.286 NE 0.000 0.000 0.000 0.092 0.000 0.000 0.000 0.000 0.000 0.092 ENE 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.046 E
ESE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SE SSE 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.046 S 0.000 0.000 0.000 0.000 0.184 0.230 0.000 0.000 0.000 0.413 0.000 0.000 0.000 0.046 0.873 0.322 0.000 0.000 0.000 1.240 SSW SW 0.000 0.000 0.000 0.184 0.092 0.046 'O.000 0.000 0.000 0.322 WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WNW 0.000 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.184 0.000 0.000 0.000 0.184 NW NNW 0.000 0.000 0.000 0.046 0.238 0.184 0.000 0.000 0.000 0.367 0.000 0.000 0.138 2.021 2.297 1.424 0.000 0.000 0.000 5.880 SU3 TOTAL TOTAL HOURS OF YALID STABILITY OBSERVATIONS 2179 TOTAL HOURS OF STABILITY CLASS A 128 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS A 128 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2177 TOTAL NOURS CALM 0 METEOROLOGICAL FACILITY: SEQUOYAH NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 9.25 AND 45.99 METERS WIND SPEED AND DIRECTION MEASURED AT 9.73 METER LEVEL DATE PRINTED: 24-JUL-95 MEAN WIND SPEED = 6.17 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS
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JOIOT PERCENTAGE FREQUENCIES CtF WIRD R P:f E D BY WIND DIRECTIO'1 Foi STABILITY CLASS B (-1.9< DELTA T(=-1.7 C/100 M)
SEQUOYAE NUCLEAR PLANT APR 1, 95 - JUN 30, 95 WIED. WIND SPEED (MPE)
DIRECTION CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 .7.5-12.4 12.5-18.4 18.5-24.4 >=24.5 TOTAL U. 0.000 0.000 0.000 0.184 0.184 0.046- 0.000 0.000 0.000 0.413 CNE -0.000 0.000 0.046 0.873 0.459 0.092 0.000 0.000 0.000 1.470 E1E 0.000 0.000 0.230 0.505 0.092 0.000 0.000 0.000 0.000 0.827 ENE 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.046 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SE 0.000 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.046 SSE 0.000 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.046 S 0.000 0.000 0.046 0.046 0.230 0.092 0.000 0.000 0.000 0.413 SSW 0.000 0.000 0.000 0.505 0.643 0.046 0.000 0.000 0.000 1.194 SW 0.000 0.000 0.000 0.367 0.138 0.092 0.000 0.000 0.000 0.597
. 'USW 0.000 0.000 0.000 0.000 0.046 -0.000 0.000 0.000 0.000- 0.046
' W 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WWW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NW 0.000 0.000 0.000 0.046 0.046 0.000 0.000 0.000 0.000 0.092 ENW 0.000 0.000 0.000 0.046 0.046 0.138 0.000 0.000 0.000 0.230 SU3 TOTAL 0.000 0.000 0.322 2.618 1.975 0.505 0.000 0.000 0.000 5.420 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2179 TOTAL ROURS OF STASILITY CLASS B 118 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS B 118 TOTAL BOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2177 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: SEQUOYAH NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 9.25 AND 45.99 METERS WIND SPEED AND DIRECTION MEASURED AT 9.73 METER LEVEL DATE PRINTED: 24-JUL-95 4
MEAN WIND SPEED = 5.51 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS
JOICT PERCENTACE F0EQUECCIES OF UICD SPEED ST CICD D ITiE CTIO'T FOR STABILITT CLASS C (-1.7< DELTA T(=-1.5 C/100 M)
SEQUOTAE NUCLEAR PLANT APR 1, 95 - JUN 33, 95 TIOD WIND SPEED (MPH) 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4 >=24.5 TOTAL DIPECTION CALM 0.6-1.4 1.5-3.4 0.000 0.046 0.138 0.000 0.000 0.000 0.000 0.184 U 0.000 0.000 0.000 1.102 0.000 0.000 0.138 0.735 0.184 0.046 0.000 0.000 NNE 0.000 0.000 0.689 0.000 0.000 0.276 0.367 0.046 0.000 0.000 UE 0.000 0.000 0.230 0.000 0.000 0.138 0.092 0.000 0.000 0.000 ENE 0.000 0.000 0.046 0.000 0.000 0.000 0.046 0.000 0.000 0.000 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.134 0.000 C.000 0.046 0.092 0.000 0.000 0.000 SE 0.000 0.000 0.276 0.000 0.000 0.092 0.092 0.046 0.046 0.000 SSE 0.000 0.505 0.000 0.000 0.046 0.276 0.092 0.092 0.000 0.000 5 0.000 0.000 1.148 SSW 0.000 0.000 0.046 0.551 0.459 0.092 0.000 0.046 0.643 0.276 0.046 0.000 0.000 0.000 1.011 SW 0.000 0.000 0.000 0.046 0.000 0.046 0.000 0.000 0.000 0.092 USW 0.000 0.000 0.092 0.000 0.046 0.000 0.046 0.000 0.000 0.000 0.000 U 0.000 0.092 0.000 0.000 0.046 0.046 0.000 0.000 0.000 0.000 WNW 0.000 0.184 0.000 0.000 0.000 0.092 0.092 0.000 0.000 0.000 NW 0.000 0.276 0.000 0.000 0.046 0.046 0.184 0.000 0.000 0.000 ENW 0.000 0.873 3.078 1.470 0.643 0.000 0.000 0.000 6.063 SUDTOTAL 0.000 0.000 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2179 T7TAL EOURS OF STABILITY CLASS C 132 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS C 132 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2177 0
TOTAL HOURS CALM METEOROLOGICAL FACILITY: SEQUOTAH NUCLEAR PLANT STABILITY BASED ON DELTA-T PETWEEN 9.25 AND 45.99 METERS WIND SPEED AND DIRECTION MEASURED AT 9.73 METER LEVEL DATE PRINTED: 24-JUL-95 MEAN WIND SPEED = 5.13 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS
l l
l JOINT PERCE7;TAGE FREQUE2CIES OF WIP15 SPEED BY WIUD DIRECTIO3 FOS l
STABILITY CLASS D (-1.5< DELTA'T<=-0.5 C/100 M)
SEQUOYAN NUCLEAR PLANT APR 1, 95 - JUN 30, 95 WICD WIND SPEED (MPN)
CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4- 12.5-18.4 18.5-24.4 >=24.5 TOTAL DIRECTION 0.000 0.092 0.689 1.332 0.689 0.322 0.000 0.000 0.000 3.124
, C 3.169' NNE 0.000 0.046 1.148 1.516 0.367 0.092 0.000 0.000 0.000 ,
0.000 0.000 0.873 0.322 0.046 0.046 9.000 0.000 0.000 1.286 DE 0.459 O.000 0.046 0.367 0.046 0.000 0.000 a.000 0.000 0.000 ENE 0.413 E 0.000 0.046 0.230 0.138 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.367 0.046 0.000 0.000 3.000 0.000 0.000 0.413 ESE 0.000 0.000 0.597 0.322 0.000 0.000 0.000 0.000 0.000 0.919 SE O.000 0.046 0.827 0.413 0.230 0.459 0.184 0.000 0.000 2.159 SSE 0.000 0.000 1.194 2.756 0.731 0.827 0.000 0.000 0.000 5.558 l' S
0.000 0.000 2.389 3.537 1.608 0.322 0.000 0.000 0.000 7.855 SSW 0.000 0.000 0.965 0.919 0.413 0.046 0.000 0.000 0.000 2.343 SW 0.000 0.046 0.276 0.459 0.230 0.000 0.000 0.000 0.000 1.011 i WSW 0.092 0.367 0.184 0.000 0.000 0.000 0.000 0.735 l
-W 0.000 0.092 '
WNW 0.000 0.000 0.046 0.367 0.276 0.092 0.000 0.000 0.000 0.781 0.000 0.000 0.000 0.505 0.138 0.046 0.000 0.000 0.000 0.689 i CW RNW 0.000 0.000 0.184 0.322 0.322 0.184 0.000 0.000 0.000 1.011 0.000 0.413 10.243 13.367 5.282 2.435 0.184 0.000 0.000 31.925 SUSTOTAL 2179 l TOTAL NCURS OF VALID STABILITY OBSERVATIONS TOTAL NOURS OF STABILITY CLASS D 697
, TOTAL NOURS OF VALID WIND DIRECTION-WIND SPEED-STASILITY CLASS D 695 TCTAL NOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2177 .
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STABILITY BASED ON DELTA-T BETWEEN 9.25 AND 45.99 METERS WIND SPEED AND DIRECTION MEASURED AT 9.73 METER LEVEL DATE PRINTED: 24-JUL-95
.t MEAN WIND SPEED = 4.49 i i
NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS i
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SEQUOTAN NUCLEAR PLANT APR 1, 9 5 - JUN 30, 95 OTIND WIND SPEED (MPN) 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4 >=24.5 TOTAL DIRECTION CALM 0.5-1.4 4.685 1.883 0.322 0.000 0.000 0.000 0.000 6.936 p 0.000 0.046 0.000 2.894 0.000 0.230 1.837 0.827 0.000 0.000 0.000 0.000 NNE 0.000 0.459 0.000 0.046 0.413 0.000 0.000 0.000 0.000 0.000 EE 0.000 0.276 0.000 0.184 0.092 0.000 0.000 0.000 0.000 0.000 ENE 0.000 0.322-0.000 0.230 0.046 0.046 0.000 0.000 0.000 0.000 E 0.138 0.000 0.138 0.000 0.000 0.000 0.000 0.000 0.000 0.000
. ESE 0.000 0.643 SE 0.000 0.367 0.230 0.046 0.000 0.000 0.000 0.000 0.138 0.689 0.276 0.230 0.046 0.000 0.000 0.000 1.378 SSE 0.000 4.639 0.000 0.413 2.618 0.735 0.597 0.276 0.000 0.000 0.000 5 5.466 0.000 0.184 3.261 1.424 0.597 0.000 0.000 0.000 0.000 SSW 3.353 0.000 0.138 1.837 1.102 0.230 0.046 0.000 0.000 0.000 SW 1.975 0.000 0.138 0.965 3.505 0.230 0.138 0.000 0.000 0.000 WSW 0.000 0.092 0.276 0.138 0.138 0.000 0.046 0.000 0.000 0.689 U 0.643 0.000 0.138 0.230 0.138 0.092 0.046 0.000 0.000 0.000 WNW 0.000 0.230 0.413 0.276 0.092 0.000 0.000 0.000 0.000 1.011 NW 0.000 0.184 1.516 0.413 0.092 0.000 0.000 0.000 0.000 2.205 CNW 0.000 2.894 19.109 7.809 2.618 0.551 0.046 0.000 0.000 33.027 SUBTOTAL l TOTAL NOURS OF VALID STABILITY OBSERVATIONS 2179 TOTAL HOURS OF STABILITY CLASS E 719 TOTAL NOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS E 719 TOTAL NOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2177 0
TOTAL NOURS CALM METEOROLOGICAL FACILITY: SEQUOYAN NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 9.25 AND 45.99 METERS WIND SPEED AND DIRECTION MEASURED AT 9.73 METER LEVEL DATE PRINTED: 24-JUL-95 MEAN WIND SPEED = 3.16 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS
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SEQUOYAN NUCLEAR PLAFi JUL 1, 95 - SEP 30, 95 i
WICD WIND SPEED (MPN)
CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4 >=24.5 TOTAL SIM CTION 0.000 0.000 0.248 1.041 0.297 0.000 0.000 0.000 0.000 1.547 D 4.264 CNE 0.000 0.000 0.942 2.082 0.892 0.347 0.000 0.000 0.000 0.000 0.000 0.942 0.347 0.050 0.000 0.000 0.000 0.000 1.339 EE 0.000 0.000 0.297 0.198 0.000 0.000 0.000 0.000 0.000 0.496 ENE 0.000 0.000 0.198 0.050 0.000 0.000 0.000 0.000 0.000 0.248 3 0.248 0.000 0.000 0.198 0.050 0.000 0.000 0.000 0.000 0.000 ESE SE O.000 0.000 0.198 0.050 0.000 0.000 0.000 0.000 0.000 0.248 SSE O.000 0.000 0.099 0.099 0.000 0.000 0.000 0.000 0.000 0.198 3 0.000 0.000 0.297 0.248 0.050 0.000 0.000 0.000 0.000 0.595 SSW 0.000 0.000 0.297 0.595 0.496 0.000 0.000 0.000 0.000 1.388 SW 0.000 0.000 0.297 0.496 0.000 0.000 0.000 0.000 0.000 0.793 CSW 0.000 0.000 0.198 0.050 0.000 0.000 0.000 0.000 0.000 0.248 9 0.000 0.000 0.050 0.000 0.000 0.000 0.000 0.000 0.000 0.050 WNW 0.000 0.000 0.050 0.000 0.000 0.000 0.000 0.000 0.000 0.050 NW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 CNW 0.000 0.000 0.149 0.050 0.000 0.000 0.000 0.000 0.000 0.198 I
SU2TGTAL 0.000 0.000 4.462 5.354 1.785 0.347 0.000 0.000 0.000 11.948 TOTAL NOURS OF VALID STABILITY OBSERVATIONS 2067 TOTAL NOURS OF STABILITY CLASS A 248 TOTAL NOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS A 241 TOTAL NOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2017 TOTAL NOURS CALM 0 METEOROLOGICAL FACILITY: SEQUOYAN NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 9.25 AND 45.99 METERS WIND SPEED AND DIRECTION MEASURED AT 9.73 METER LEVEL DATE PRINTED: 26-OCT-95 MEAN WIND SPEED = 4.11 EOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS m___ __________ _ ________ _ _ _..___ _ _____ _ _ ._____ ______________ _.._ _ _ _ _ _ _ _ _ . - . - --. . . . - . . - -. ~_ _ - .-
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SEQUOYAN NUCLEAR PLANT JUL 1, 95 - SEP 30, 95 CI"D WIND SPEED (MPN)
FI?iCTION CALM 0.5-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4 >=24.5 TOTAL D 0.020 0.149 1.735 1.140 0.347 0.099 0.000 0.000 0.000 3.490 CNE 0.013 0.149 1.091. 1.289 0.793 1.041 0.000 0.000 0.000 4.376 CE 0.006 0.099 0.496 0.099 0.050 0.000 0.000 0.000 0.000 0.750 ENE 0.003 0.050 0.248 0.149 0.000 0.000 0.000 0.000 0.000 0.449 3 0.001 0.000 0.050 0.099 0.050 0.000 0.000 0.000 0.000 0.199 ,
ESE 0.002 0.000 0.198 0.198 0.099 0.000 0.000 0.000 0.000 0.498 t SE 0.003 0.099 0.198 0.000 0.050 0.000 0.000 0.000 0.000 0.350 SSE 0.006 0.050 0.496 0.595 0.545 0.198 0.000 0.000 0.000 1.890 S 0.023 0.099 2.132 1.686 0.496 0.545 0.000 0.000 0.000 4.981 SSW 0.030 0.446 2.429 2.975 0.297 0.099 0.000 0.000 0.000 6.277 SW 0.013 0.050 1.239 0.892 0.050 0.000 0.000 0.000 0.000 2.244 USW 0.000 0.198 0.595 0.297 0.000 0.000 0.000 0.000 0.000 1.099 W 0.005 0.099 0.397 0.000 0.099 0.000 0.000 0.000 0.000 0.600 WWW 0.002 0.050 0.149 0.000 0.000 0.000 0.000 0.000 0.000 0.200 NW 0.005 0.050 0.397 0.099 0.000 0.000 0.000 0.000 0.000 0.550 CNW 0.009 0.000 0.892 0.347 0.347 0.000 0.000 0.000 0.000 1.596 SU2T@TAL 0.149 1.587 12.742 9.866 3.223 1.983 0.000 0.000 0.000 29.549 TOTAL NOURS OF VALID STABILITY OBSERVATIONS 2067 TOTAL NOURS OF STABILITY PLASS D 605 TOTAL NOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS D $96 l TOTAL NOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2017 TOTAL NOURS CALM 3 I
l t METEOROLOGICAL FACILITY: SEQU(YAN NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 9.25 AND 45.99 METERS WIND SPEED AND DIRECTION MEASURED AT 9.73 METER LEYEL DATE PRINTED: 26-OCT-95 MEAN WIND SPEED = 3.83 COTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS '
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SEQUOYAN NUCLEAR PLANT, JUL 1, 95 - SEP 30, 95 WILD WIND SPEED (MPN) TOTAL 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4 >=24.5 RIRECTION CALM 0.6-1.4 5.553 1.239 0.149 0.000 0.000 0.000 0.000 8.851 D 0.720 1.190 0.000 5.196 1.190 2.429 1.190 0.000 0.000 0.000 0.000 LEE 0.387 0.000 0.000 0.483 0.037 0.149 0.198 0.050 0.050 0.000 0.000 EE 0.000 0.000 0.274 ENE 0.026 0.099 0.149 0.000 0.000 0.000 0.000 0.198 0.050 0.000 0.000 0.000 0.000 0.000 0.269 3 0.021 0.000 0.000 0.379 0.032 0.099 0.198 0.050 0.000 0.000 0.000 0.000 ISE 0.000 0.000 G.313 0.016 0.099 0.050 0.149 0.000 0.000 0.000 SE 0.000 0.000 1.202 SSE 0.111 0.397 0.645 0.050 0.000 0.000 0.000 1.140 0.099 0.050 0.000 0.000 0.000 0.000 1.795 S 0.159 0.347 2.707 0.446 1.686 0.297 0.050 0.000 0.000 0.000 0.000 ESW 0.228 0.000 3.354 0.281 0.545 2.082 0.347 0.099 0.000 0.000 0.000 SW 0.000 1.850 0.164 0.446 1.091 0.099 0.000 0.050 0.000 0.000 CSW 0.000 0.917 0.595 0.099 0.000 0.050 0.000 0.000 W 0.074 0.099 0.000 0.000 0.000 0.000 1.087 WWh 0.095 0.595 0.297 0.099 0.000 0.793 0.050 0.099 0.050 0.000 0.000 0.000 1.735 NW 0.148 0.595 2.558 0.694 1.438 0.149 0.050 0.000 0.000 0.000 0.000 UNW 0.228 18.542 4.016 0.545 0.149 0.000 0.000 0.000 32.970 ST3 TOTAL 2.727 6.991 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2067 684 TOTAL HOURS OF STABILITY CLASS E 665 TOTAL NOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS E 2017 TOTAL NOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 55 TOTAL HOURS CALM ME?tOBOLOGICAL FACILITY: SEQUOYAH NUCLEAR PLANT STAl*L1TT BASED ON DELTA-T BETWEEN 9.25 AND 45.99 METERS WIND SPEED AND DIRECTION MEASURED AT 9.73 METER LEVEL DATE PRINTED: 26-OCT-95 MEAP WIND SPEED = 2.16 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUhDED NUMBERS
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NIESCTION CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4 >=24.5 TOTAL D 0.000 0.000 0.000 0.147 0.098 0.098 0.049 0.000 0.000 0.391 CNE 0.000 0.000 0.196 0.147 0.293 0.293 0.049 0.000 0.000 0.978 CE 0.000 0.000 0.244 0.293 0.244 0.147 0.000 0.000 0.000 0.929 ENE 0.000 0.000 0.147 0.000 0.000 0.000 0.000 0.000 0.000 0.147 E 0.000 0.000 0.098 0.098 0.000 0.000 0.000 0.000 0.000 0.196 i ESE 0.000 0.000 0.098 0.000 0.000 0.000 0.000 0.000 0.000 0.098 SE 0.000 0.000 0.098 0.098 0.000 0.000 0.000 0.000 0.000 0.196 SSE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 S 0.000 0.000 0.147 0.000 0.049 0.049 0.000 0.000 0.000 0.244 SSW 0.000 0.000 0.049 0.440 0.049 0.000 0.000 0.000 0.000 0.538 SW 0.000 0.000 0.196 0.342 0.000 0.000 0.000 0.000 0.000 0.538 WSW 0.000 0.000 0.098 0.000 0.000 0.049 0.000 0.000 0.000 0.147 0 0.000 0.000 0.049 0.000 0.000 0.049 0.000 0.000 0.000 0.098 WWW 0.000 0.000 0.000 0.000 0.000 0.049 0.000 0.000 0.000 0.049 NW 0.000 0.000 0.000 0.049 0.000 0.000 0.000 0.000 0.000 0.049 CNW 0.000 0.000 a.000 0.147 0.147 0.000 0.000 0.000 0.000 0.293 SULTOTAL 0.000 0.000 1.418 1.760 0.880 0.733 0.098 0.000 0.000 4.890 e
TOTAL NOURS OF VALID STABILITY OBSERVATIONS 2191 TOTAL NOURS OF STABILITY CLASS B 104 TOTAL NOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS B 100 TOTAL NOURS OF VALID WIND DIRECTION-WIND $ PEED-STABILITY OBSERVATIONS 2045 TOTAL NOURS CALM 0 METEOROLOGICAL FACILITY: SEQUOYAN NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 9.25 AND 45.99 METERS WIND SPEED AND DIRECTION MEASURED AT 9.73 METER LEVEL DATE PRINTED: 23-JAN-96 l
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JOITT PERCENTATE FR E QUT*!CI E S OF UICD SPEED fiY t*ITS ftIf;ECTIr"? Fan S*'BILITY CLASS C (-1.7< DELTA T<=-1.5 C/100 M)
SEQUOYAN NUCLEAR PLANT OCT 1, 95 - DEC 31 95 CICD WIND SPEED (MPN)
RIT*CTION CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4 >=24.5 TOTAL D 0.000 0.000 0.000 0.049 0.049 0.147 0.000 0.000 0.000 0.244 CNE 0.000 0.000 0.342 0.098 0.147 0.587 0.098 0.000 0.000 1.271 GE 0.000 0.000 0.391 0.147 0.196 0.000 0.0J0 0.000 0.000 0.733 ENE 0.000 0.000 0.049 0.000 0.000 0.000 0.000 0.000 0.000 0.049 E 0.000 0.000 0.098 0.000 0.000 0.000 0.000 0.000 0.000 0.098 ESE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SSE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 S 0.000 0.000 0.049 0.049 0.000 0.049 0.000 0.000 0.000 0.147 SSW 0.000 0.000 0.049 0.342 0.049 0.000 0.000 0.000 0.000 0.440 SW 0.000 0.049 0.147 0.538 0.098 0.000 0.000 0.000 0.000 0.831 USW 0.000 0.000 0.147 0.049 0.000 0.098 0.000 0.000 0.000 0.293 0 0.000 0.000 0.000 0.000 0.000 0.049 0.000 0.000 0.000 'O.049 WNW 0.000 0.000 0.049 0.000 0.000 0.000 0.000 0.000 0.000 0.049 L'W 0.000 0.000 0.000 0.049 0.000 0.000 0.000 0.000 0.000 0.049 ENW 0.000 0.000 0.000 0.147 0.196 0.049 0.000 0.000 0.000 0.391 SU3 TOTAL 0.000 0.049 1.320 1.467 0.733 0.978 0.098 0.000 0.000 4.645 TOTAL NOURS OF VALID STABILITT OBSERVATIONS 2191 TOTAL NOURS OF STABILITY CLASS C 96 ,
TOTAL NOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS C 55 TOTAL NOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2045 TOTAL NOURS CALM 0 METEOROLOGICAL FACILITY: SEQUOYAN NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 9.25 AND 45.99 METERS WIND SPEED AND DIRECTION MEASURED AT 9.73 METER LEVEL DATE PRINTED: 23-JAN-96 MEAN WIND SPEED = 5.40
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COTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS i
_ _ - _ _ __ - _ _ _ - - - - - _ _ _ _ - _ _ - _ _ _ _ - _ _ _ _ _ _ _ _ _ _ - _ _ - _ - _ _ -. ._____ _ --- - ~ . - - . ~. - .
JOINT PE?CE!*TA22 F?Ul*QUM CIRS OF CIN3 SPEED BY CIWD DIRECTIO7 FC*t STABILITY CLASS D (-1.5( DELTA T(=-0.5 C/100 Mi SEQUOYAN NUCLEAR PLANT OCT 1, 95 - DEC 31, 95 WICD WIND SPEED (MPN)
RIPM CTION CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4 >=24.5 TOTAL U 0.021 0.342 1.222 1.663 2.689 1.467 0.000 0.000 0.000 7.405 CNE 0.026 0.147 1.809 1.760 1.369 2.298 0.049 0.000 0.000 7.459 CE 0.007 0.049 0.489 0.391 0.098 0.000 0.098 0.000 0.000 1.132 ENE 0.004 0.098 0.196 0.049 0.000 0.000 0.000 0.000 0.000 0.346 E 0.001 0.000 0.098 0.000 0.000 0.000 0.000 0.000 0.000 0.099 ESE 0.001 0.000 0.049 0.000 0.000 0.049 0.000 0.000 0.000 0.098 SE 0.002 0.000 0.147 0.000 0.000 0.000 0.000 0.000 0.000 0.149 SSE 0.005 0.098 0.293 0.049 0.000 0.000 0.000 0.000 0.000 0.445
~S 0.014 0.147 0.929 0.440 0.196 0.636 0.098 0.000 0.000 2.459 SSW 0.020 0.147 1.369 1.565 0.587 0.489 0.000 0.000 0.000 4.177 SW 0.021 0.147 1.418 1.369 0.342 0.244 0.000 0.000 0.000 3.542 ESW 0.006 0.049 0.440 0.049 0.196 0.244 0.000 0.000 0.000 0.984 0 0.004 0.098 0.196 0.049 0.000 0.196 0.005 0.000 0.000 0.542 WNW 0.003 0.049 0.196 0.147 0.147 0.244 0.000 0.000 0.000 0.786 NW 0.005 0.098 0.244 0.538 0.440 0.196 0.000 0.000 0.000 1.520 ENW 0.006 0.244 0.244 0.782 1.467 0.538 0.000 0.000 0.000 3.283 SU3 TOTAL 0.147 1.711 9.340 8.851 7.531 6.601 0.244 0.000 0.000 34.425 TOTAL NOURS OF VALID STABILITY OBSERVATIONS 2191 TOTAL NOURS OF STABILITY CLASS D 728
' TOTAL NOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS D 704 TOTAL NOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2045 TOTAL NOURS CALM 3 METEOROLOGICAL FACILITY: SEQUOYAN NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 9.25 AND 45.99 METERS WIND SPEED AND DIRECTION MEASURED AT 9.73 METER LEVEL DATE PRINTED: 23-JAN-96 MEAN WIND SPEED = 5.14 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS
. _ . . _ _ - - - . . __m . _ . _ _ _ . . _ .-. . _ - -_m, _.._____-_m , _.m . . _ . _ _ _ . = .m--.._..m - . _ _ _ _ . . . . _ & _ _.~
1.
JOICT FEM.CE :TAGE ' FREQUT!"CIES CF WICD SPEED BT CI!!D DIRECTIR83 F03 STABILITY CLASS E (-0.5< DELTA T<= 1.5 C/100 M) ,
SEQUOTAN NUCLEAR PLANT OCT 1, 95 - DEC 31, 95 CIED WIND SPEEDiMTE) 0.6-1.4 't.5-3.4 3.5-5.4 1.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4 >=24.5 TOTAL DISRCYZON CALM O.200 0.685 2.836 1.320 0.782 0.342 0.000 0.000 0.000 6.166 D 4.551 ENE 0.150 0.489 2.152 0.782 0.685 0.293 0.000 0.000 0.000 ;
0.017 0.098 0.196 0.049 0.000 0.000 0.000 0.000 0.000 0.359 t CE 0.207 ENE O.011 0.147 0.049 0.000 0.000 0.000 0.000 0.000 0.000 ' ll 0.006 0.049 0.049 0.000 0.000 0.000 0.000 0.000 0.000 0.103
- E O.011 0.196 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.207 ESE 0.310 SE 0.017 0.244 0.049 0.000 0.000 0.000 0.000 0.000 0.000 i 0.022 0.196 0.196 0.049 0.000 0.000 0.098 0.000 0.000 0.560 i SSE 2.868 S 0.080 0.391 1.027 0.636 0.342 0.293 0.098 0.000 0.000 0.150 0.244 2.396 1.174 0.489 0.196 0.000 0.000 0.000 4.649 SSw 4.436 SW 0.133 0.196 2.152 1.516 0.391 0.049 0.000 0.000 0.000 0.196 0.000 0.000 0.000 0.000 1.218 i wSw 0.044 0.196 0.587 0.196 0.000 0.000 0.000 0.563 l U 0.025' O.196 0.244 0.049 0.049' O.000
- www 0.033 0.244 0.342 0.342 0.000 0.000 0.049 0.000 0.000 1.011 Nw 0.044 0.196 0.587 0.391 0.196 0.049 0.000 0.000 0.000 1.462 0.083 0.342 1.125 0.440 0.342 0.000 0.000 0.000 0.000 2.333 i CNw 4.100 13.985 6.944 3.472 1.222 0.244 0.000 0.800 31.002 SUETOTAL 1.027 r
TOTAL NOURS OF VALID STABIL.*TT OBSERVATIONS 2191 TOTAL NOURS OF STABILITY CLAhJ E 685 {
TOTAL NOURS OF VALID WIND DIRE
- TION-WIND SPEED-STABILITY CLASS E 634 j TOTAL NOURS OF YALID WIND DIRECTION-WIND SPEED-STABILIT* OBSERVATIONS 2045 TOTAL NOURS CALM 21
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i i
METEOROLOGICAL FACILITY: SEQUOTAN NUCLEAR PLANT I STABILITY BASED ON DELTA-T BETWEEN 9.25 AND 45.99 METERS WZND SPEED AND DIRECTION MEASURED AT 9.73 METER LEVEL DATE PRINTED: 23-JAN-96 t
MEAN WIND SPEED = 3 . 3 's i
a I
i NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS i
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JOINT P E*.CENTAT E FDEQUE"ICISS OF UITD SPEED BY UI"D DIPECTIC'1 F5"M STABILITY CLASS F ( 1.5< DELTA T<= 4.0 C/10$ M)
SEQUOYAN NUCLEAR PLANT OCT 1, 95 - DEC 31, 95 CILD WIND SPEED (MPN)
RIR"CTION QL{ 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4 >=24.5 TOTAL D 0.187 0.342 2.445 0.098 0.000 0.000 0.000 0.000 0.000 3.072 LNE 0.265 1.222 2.738 0.000 0.000 0.000 0.000 0.000 0.000 4.226 UE 0.059 0.636 0.244 0.000 0.000 0.000 0.000 0.000 0.000 0.939 ENE 0.010 0.049 0.098 0.000 0.000 0.000 0.000 0.000 0.000 0.157 E 0.007 0.098 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.104 SSE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SE 0.010 0.147 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.157 SSE 0.020 0.196 0.098 0.000 0.000 0.000 0.000 0.000 0.000 0.313 S 0.039 0.342 0.244 0.049 0.000 0.000 0.000 0.000 0.000 0.675 SSW 0.075 0.196 0.929 0.049 0.000 0.000 0.000 0.000 0.000 1.249 SW 0.072 0.049 1.027 0.196 0.000 0.000 0.000 0.000 0.000 1.343 CSW 0.007 0.000 0.098 0.000 0.000 0.000 0.000 0.000 0.000 0.104 0 0.007 0.000 0.098 0.147 0.000 0.000 0.000 0.000 0.000 0.251 WWW 0.020 0.098 0.196 0.098 0.000 0.000 0.000 0.000 0.000 0.411 NW 0.036 0.244 0.293 0.196 0.000 0.000 0.000 0.000 0.000 0.769 ENW 0.069 0.293 0.733 0.196 0.000 0.000 0.000 0.000 0.000 1.291 SUITOTAL 0.880 3.912 9.242 1.027 0.000 0.000 0.000 0.000 0.000 15.061 "AL NOURS OF YALID STABILITY OBSERVATIONS 2191 4,fAL NOURS OF STABILITY CLASS F 357 TOTAL NOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS F 308 TOTAL NOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2045 TOTAL NOURS CALM 18 METEOROLOGICAL FACILITY: SEQUOYAN NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 9.25 AND 45.99 METERS WIND SPEED AND DIRECTION MEASURED AT 9.73 METER LEVEL ,
DATE PRINTED: 23-JAN-96 MEAN WIND SPEED = 1.96 COTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS
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