Text

Radiological Impact Assessment Browns Ferry Nuclear Plant Jul-Dec 1993
	ML18037A813
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Site:	Browns Ferry
Issue date:	12/31/1993
From:	; TENNESSEE VALLEY AUTHORITY
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EHCLOSURE 1 TEHHESSEE VALI'UTHORITY BROWHS FERRY HUCLEAR PLAHT (BFH)

UHITS 1~

2~

AHD 3 RADIOLOGICAL IMPACT ASSESSMEHT REPORT TABLE OF COHTENTS I.

Introduction II.

Dose Limits III.

Dose Calculations IV.

Doses from Airbone Effluents V.

Doses from Liquid Effluents VI.

Population Doses VII. Direct Radiation VIII.

Dose to Members of the Public Inside The Site Boundary IX.

Total Dose

' 9404'i'10413 940329

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TABLE OF CONTENTS (Continued)

Listing of Tables Table 1 Doses from Airborne Effluents Third Quarter Table 2 Doses from Airborne Effluents Fourth Quater Table 3 Doses from Liquid Effluents Third Quarter Table 4 Doses from Liquid Effluents Fourth Quarter Table 5 Total Dose from Fuel Cycle El-7 El-8 El-9 El-10 El-11 Table 6 Joint Frequency Distribution in Percent for Ground Level Releases Third Quarter El El-19 Table 7 Joint Frequency Distribution in Percent for Ground Level Releases Fourth Quarter El El-27 Table 8 Joint Frequency Distribution in Percent for Split Level Releases Ground Level Portion Third Quarter El El-35 Table 9 Joint Frequency Distribution in Percent for Split Level Releases Ground Level Portion Fourth Quarter El El-43 Table 10 Joint Frequency Distribution in Percent for Split Level Releases Elevated Level Portion Third Quarter El El-51 Table ll Joint Frequency Distribution in Percent for Split Level Releases Elevated Level Portion Fourth Quarter Table 12 Joint Frequency Distribution in Percent for Stack Releases Third Quarter El El-59 El El-67 Table 13 Joint Frequency Distribution in Percent for Stacks Releases Fourth Quarter El El-75 El-la

0

Radiological impact Assessment Browns Ferry Nuclear Plant July - December 1993 Potential doses to maximum individuals and the population around Browns Ferry are calculated for each quarter as required in Section 5.2 of the Offsite Dose Calculation Manual (ODCM).

Measured plant releases for the reporting period are used to estimate these doses.

Dispersion of radioactive eNuents 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 Browns Ferry.

The ODCM specifies limits for the release of radioactive eNuents, as well as limits for doses to the general public from the release of radioactive effluents. These limits are set well below the NRC 10 CFR 20 limits which govern the concentrations of radioactivity and exposures permissible in unrestricted areas.

This ensures that radioactive eNuent releases are As Low As Reasonably Achievable.

The limits for doses at or beyond the site boundary from airborne noble gases releases are:

Less than or equal to 5 mrad per quarter and 10 mrad per year (per reactor unit) for gamma radiation,

- and-Less than or equal to 10 mrad per quarter and 20 mrad per year (per reactor unit) for beta radiation.

The limitfor the dose to a member of the general public at or beyond the site boundary from iodines and particulates released in airborne eNuents is:

Less than or equal to 7.5 mrem per quarter and 15 mrem per year (per reactor unit) to any organ.

The limitfor 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 vicinityof 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.

Radiological Impact Assessment Browns Ferry Nuclear Plant July - December 1993 Estimated doses to the public are determined using computer models (the Gaseous ENuent 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 1.113) for determining the potential dose to individuals and populations living in the vicinityof 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 willtend to overestimate the dose to this "maximum" person.

The expected dose to actual individuals is lower. The calculated doses are presented in Tables 1, 2, 3,4 and 5.

IV. D For airborne eNuents, 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 from the atmosphere, and ingestion of milkand beef which contains radioactivity deposited from the atmosphere onto vegetation which is then eaten by milk and beef animals.

There are four routine release points from Browns Ferry Nuclear Plant: the turbine building, the radwaste building, the reactor building, and the stack.

Releases from the turbine building are considered ground-level releases.

The ground-level Joint 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 is presented in Tables 6 and 7.

Releases from the radwaste and reactor buildings are considered split-level releases.

Portions of the release are treated as elevated while other portions are considered ground-level depending on the ratio of the vertical exit velocity to the horizontal wind speed.

The split-level dispersion approach is implemented using a model that requires two complete quarterly JFDs for each eNuent vent, one for the elevated releases and one for the ground-level releases.

The ground-level portion of the split-level JFD is based on wind speeds and directions measured 10 meters above ground-level and from the vertical temperature difference between 10 and 46 meters.

The elevated portion of the split-level JFD is based on wind speeds and direction measurements at the 46-meter level and the vertical temperature difference between 46 and 91 meters.

Both of these JFDs are given in Tables 8, 9, 10, and 11.

Releases from the stack are considered to be elevated-level releases.

The JFDs for elevated releases are based on wind directions and wind speeds measured at 91 meters and the vertical temperature difference between 46 and 91 meters, and are given in Tables 12 and 13.

Meteorological variables at Browns Ferry 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

Radiological Impact Assessment Browns Ferry Nuclear Plant July - December 1993 using the appropriate levels of meteorological data. Ajoint frequency distribution gives the percentage of the time in a quarter that the wind is blowing out of a 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 distributed by direction in proportion to the distribution of noncalm wind directions less than 0.7 m/s (1.5 mph). Stability classes are determined from the vertical temperature difference between two measurement levels.

The generally open terrain around BFN is not believed to cause any significant effects on the transport and dispersion of gaseous effluents from the plant. Within 30 kilometers of BFN, the terrain is mostly gently rolling hills (30-60 meters).

Between 30 and 80 kilometers the hills become larger to the north and south, and mountainous to the east and northeast.

The Tennessee River/Wheeler Lake may have a minor effect on transport and dispersion in the immediate vicinityof BFN during periods of winds with a southerly component, overcast skies, and relatively high wind speeds.

Then, the lower layer (1046 meters) stability class tends to be more stable than would be expected.

However, during this infrequent condition, dose estimates willbe conservative.

Dose estimates for maximum external air exposures (gamma-air and beta-air doses) are made for points at and beyond the site boundary as described in the BFN ODCM.

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.

Doses to organs due to releases of airborne effluents are estimated for the inhalation, ground contamination, and ingestion pathways.

The ingestion pathway is further divided into four possible contributing pathways'ngestion 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, 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 site 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 eNuents are presented in Tables 1 and 2.

V DO 0

D FL S

For liquid effluents, the public can be exposed to radiation from three sources: the ingestion of water from the Tennessee River, the ingestion of fish caught in the Tennessee River, and direct exposure from radioactive material deposited on the river shoreline sediment (recreation).

Radiological Impact Assessment Browns Ferry Nuclear Plant July - December 1993 The concentrations of radioactivity in the Tennessee River are estimated by a computer model which uses measured hydraulic data downstream of Browns Ferry. 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 estimate doses, as well as the parameters input to the models, are described in detail in the Browns Ferry Nuclear Plant ODCM.

Radioactivity concentrations in the Tennessee River are calculated assuming that releases in liquid eNuents are continuous.

Allroutine liquid releases from Browns Ferry, located at Tennessee River Mile 294, are made through diffusers which extend into the Tennessee River.

It is assumed that releases to the river through these diffusers willinitiallybe entrained in one-fifthof the water which flows past the plant. The QWATAcode makes the assumption that this mixing condition holds true until the water is completely mixed at the first downstream dam, at Tennessee River Mile 283.0.

Doses are calculated for locations between the plant site and the mouth of the Tennessee River.

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 downstream dam (Wheeler Dam). The maximum individual dose from drinking water is assumed to be that calculated at the nearest downstream public water supply (Champion Paper Company).

This could be interpreted as indicating that the maximum individual, as assumed for liquid releases from Browns Ferry, is an individual who obtains all of his drinking water at the Champion Paper Company, consumes fish caught from the Tennessee River between BFN and Wheeler 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 Browns Ferry. Dose estimates for the maximum individual due to liquid eNuents for each quarter in the period are presented in Tables 3 and 4, along with the average river flows past the plant site for the periods.

Vl.

Population doses for highest exposed organ due to airborne eNuents are calculated for an estimated 627,000 persons living within a 50-mile radius of the plant site. 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.

Population doses for total body and the maximum exposed organ due to liquid eNuents are calculated for the entire downstream Tennessee River Population. Water ingestion population doses are calculated using actual population figures for downstream public water supplies.

Fish ingestion population doses are calculated assuming that all sport fish caught in the 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 downstream locations.

Population dose estimates for airborne and liquid eNuents are presented in Tables 1, 2, 3 and 4.

El-5

Radiological Impact Assessment Browns Ferry Nuclear Plant July - December 1993 External gamma radiation levels were measured by thermoluminescent dosimeters (TLDs) deployed around BFN. The quarterly gamma radiation levels determined from these TLDs during this reporting period averaged approximately 15.6 mR/quarter at onsite stations and approximately 14.0 mR/quarter at offsite stations, or approximately 1.6 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 small increments 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 eNuents.

Vill.

No routine activities within the site boundary by members of the public have been identified which would lead to their radiation exposure.

. IgrlLJNm To determine compliance with 40 CFR 190, annual total dose contributions to the maximum individual from BFN radioactive eNuents and all other nearby uranium fuel cycle sources are considered.

The annual dose to any organ other than thyroid for the maximum individual is conservatively 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 eNuents for each quarter from ground contamination, inhalation and ingestion, the total body dose from liquid eNuents for each quarter, the maximum organ dose (for any organ other than the thyroid) from liquid eNuents 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 limitfor total body or any organ dose (other than thyroid) to determine compliance.

The annual thyroid dose to the maximum individual is conservatively estimated by summing the following doses: the total body air submersion dose for each quarter, the thyroid dose from airborne eNuents for each quarter, the total body dose from liquid eNuents for each quarter, the thyroid dose from liquid eNuents 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 limitfor thyroid dose to determine compliance.

Cumulative annual total doses are presented in Table 5.

El-6

Radiological Impact Assessment Browns Ferry Nuclear Plant July - December 1993 v

a D

e Table 1 Doses from Airborne Effluents Third Quarter Pathway Dose Quarterly Limit Percent of Limit Location External Gamma Air Beta Air 3.8E-04 mrad 6.1E-04 mrad 5 mrad 10 mrad

<1%

N/1 525 meters N/1525 meters Submersion Total Body Skin 1.1E-03 mrad 2.0E-03 mrad 10 mrad 10 mrad

<1%

NE/3772 meters NE/3772 meters Organ Doses Child/Bone Child/Thyroid Child/Total Body 3.8E-03 mrad 6.7E-03 mrad 2.0E-03 mrad 7.5 mrad 7.5 mrad 7.5 mrad

<1%

NNW/1791 meters NNW/1791 meters NNW/1791 meters Total Body Dose 1.0E-02 man-rem Maximum Organ Dose (organ) 2.3E-02 man-rem (bone)

Population doses can be compared to the natural background dose for the entire 50-mile population ofabout 56,430 man-remlyear (based on 90 mremlyr fornatural background).

E1-7

Radiological impact Assessment Browns Ferry Nuclear Plant July - December 1993 vd D

e Table 2 Doses from Airborne Effluents Fourth Quarter Pathway Dose(mrad)

Quarterly Limit Percent of Limit Location External Gamma Air Beta Air Submersion Total Body Skin 1.8E-04 7.0E-05 2.6E-04 3.8E-04 5 mrad 10 mrad 10 mrad 10 mrad SE/5600 meters SE/5600 meters NE/3772 meters NE/3772 meters Organ Doses Child/Thyroid Child/Thyroid Child/Total Body 5.5E-03 5.5E-03 1.4E-03 7.5 mrad 7.5 mrad 7.5 mrad NNW/1791 meters NNW/1791 meters NNW/1791 meters I 'Dse Total Body Dose 1.0E-02 man-rem Maximum Organ Dose (organ) 1.8E-02 man-rem (thyroid)

Population doses can be compared to the natural background dose for the entire 50-mile population ofabout 56,430 man-remlyear (based on 90 mremlyr fornatural background).

El-8

Radiological Impact Assessment Browns Ferry Nuclear Plant July - December 1993 Table 3 Doses from Liquid ENuents Third Quarter

'v D

Age Group Organ Dose Pathway Dose

-(mrem)

Quarterly Limit Percent of Limit Adult Total Body Water Ingestion 1.6E-04 Fish Ingestion 2.0E-02 Recreation Total 2.6E-03 2.3E-02 1.5 mrem 1.5%

Teen Liver Water Ingestion 1.6E-04 Fish Ingestion 3.0E-02 Recreation Total 2.6E-03 3.3E-02 5 mrem Teen Thyroid Water Ingestion 2.6E-05 Fish Ingestion 3.0E-04 Recreation Total 2.6E-03 2.9E-03 5 mrem Average Riverflow past BFN (cubic feet per second):

27,278 o

u at'on Doses Total Body Dose 2.4E-01 man-rem Maximum Organ Dose (organ) 3.3E-01 man-rem (liver)

Population doses can be compared to the natural background dose forthe entire 50-mile population ofabout 56,430 man-remiyear (based on 90 mremlyr fornatural background).

El-9

Radiological Impact Assessment Browns Ferry Nuclear Plant July - December 1993 Table 4 Doses from Liquid Effluents Fourth Quarter

'vdu D

Age Group Organ Dose Pathway Dose Quarterly Limit Percent of Limit

'dult Total Body Water Ingestion Fish Ingestion Recreation Total 1.0E-04 1.4E-02 1.8E-03 1.6E-02 1.5 mrem 1%

Teen Liver Water Ingestion Fish Ingestion Recreation Total 1.0E-04 2.1E-02 1.8E-03 2.3E-02 5 mrem Teen Thyroid Water Ingestion Fish Ingestion Recreation Total 3.5E-05 3.5E-04 1.8E-03 2.2E-03 5 mrem Average Riverflow past BFN (cubic feet per second): 32,438 o

la' ses Total Body Dose 1.2E-01 man-rem Maximum Organ Dose (organ) 1.8E-01 man-rem (liver)

PopulatIon doses can be compared to the natural background dose for the entire 50-mile population ofabout 56,430 man-rem/year (based on 90 mrem/yr fornatural background).

E1-10

Radiological Impact Assessment Browns Ferry Nuclear Plant July - December 1993 Table 5 Total Dose from Fuel Cycle Dose First Quarter Second Quarter Third Quarter Fourth Quarter Total Body or any Organ (except thyroid)

Total body air submersion Critical organ dose (air)

Total body dose (liquid) 6.1E-03 1.6E-02 5.4E-02 3.8E-04 1.1E-03 1.1E-02 3.8E-03 2.7E-02 2.3E-02 2.6E-04 5.5E-03 1.6E-02 O.OE-OO Direct Radiation Dose Maximum organ dose (liquid) 6.7E-02 3.9E-02 3.3E-02 O.OE-00 O.OE-00 2.3E-02 0.0E-OO Total'.4E-01 7.7E-02 6.1E-02 4.5E-02 Cumulative Total Dose (Total body or any other organ) mrem Annual Dose Limit(mrem)

Percent of Limit 3.2E-01 2.50E+01 1 3%

Thyroid Dose (mrem)

Total body air submersion Thyroid dose (airborne)

Total body dose (liquid)

Thyroid dose (liquid)

Direct Radiation Dose 6.1E-03 1.4E-02 5.4E-02 4.0E-02 O.OE-OO 3.8E-04 1.1E-03 4.6E-03 6.7E-03 2.7E-02 2.3E-02 4.8E-03 2.9E-03 O.OE-OO O.OE-OO 2.6E-04 5.5E-03 1.6E-02 2.2E-03 0.0E-00 Total 1.1E-01 3.7E-02 3.4E-02 2 4E-02 Cumulative Total Dose (Thyroid) mrem 2.1E-01 Annual Dose Limit(mrem)

Percent of Limit 7.50E+01

<1%

Radiological Impact Assessment Browns Ferry Nuclear Plant July - December 1993 Table 6 Joint Frequency Distribution in Percent for Ground Level Releases Third Quarter El-12

0 JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WZND DIRECTION FOR STABILITY CLASS h (DELTA T< -1. 9 C/100 M)

BROWHS FERRY NUCLEAR PLANT JUL 1,

93 SEP 30, 93 WIND DIRECTIOH CALM 0.6-1.4 1.5-3.4 WIND SPEED(MPHl 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4

>~24.5 TOTAL N

NNE HE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW N?IW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 Q.QQQ Q.QQQ 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 0.047 0.094 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 O.O94 0.374 1.403 0.842 Q ~ 281 0.234 0.000 0.000 0.000 0.000 0.000 0.094 0.000 0.000 0.000 0.000 0.047 0.701 1.075 1.403

0. 561 0.982 0.047 0.000 0.047 0.000 0.000 0.094 0.140 0.047 0.000 0.000 0.047 0.000 0.000 0.047 0.000 0.047 0.094 Q.Q47 0.000 0.187 0.000 0.234 0.094 0.234 0.047 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 Q.ooa 0.047 0.374 0.234 Q.QQQ 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.047 0.1&7 0.000 o.oao 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 Q.QQQ 0.000 a.ooo Q.ooa 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 0.421 0.234 0.281 a.o47 0.000 0.187 1.075 2.525 2.384 0 ~ 842 1.262 0.140 0.047 0.140 0.748 0.234 SUBTOTAL 0.000 0.140 3.226 4.956 0.748 1.262 0.234 0.000 0.000

10. 566 TOTAL HOURS OF VALID STABILITY OBSERVATIONS TOTAL HOURS OF STABILITY CLASS A

TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CZ ASS A

TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS TOTAL HOURS CALM 2204 228 226 2139 0

METEOROLOGICAL FACILITY:

BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.42 METER LEVEL I

DATE PRINTED 21-OCT-93 MEAN WIND SPEED ~

4.74 NOTE:

TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS El-13

JOINT PERCEtiTACE FREQUENCIES OP WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS B

(-1. 9(

DELTA T(=-1.7 C/100 M)

BRO'WNS FERRY NUCZ EAR PLANT JUL 1,

93 SEP 30, 93 WIND DIRECTION CALM

0. 6-1. 4

1. 5-3. 4 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 N

tiNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW SUBTOTAL 0.000 0.000 Q.QQQ 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 o.oao 0.000 0.000 0.000 0.000 0.000 0.000 0.000 o.oao Q.QQQ 0.000 0.000 0.000 0.000 0.047 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.047 0.000 0.047 0.000 0.04 I 0.000 0.047 0.561 0.561 0.795 0.18 I 0.281 0.094 0.047 0.000 0.000 0.000 2.665

0. 187 0.047 0.04 I 0.000 Q.ooo 0.094 0.187 0.000 0.140 0.140 0.374 0.561 0.281 0.094 0.047 0.094 2.291 0.281 0.140 0.000 0.047 a.ooo 0.000 0.000 0.000 0.000 0.000 0.000 0 ~ 047 0.140 0.140 0.047 0.234 1.075 0.140 0.094 0.000 O.O47 0.000 o.ooa 0.000 0.000 0.000 0.000 0.000 0.000 O.O94 0.281 0.514 0.094 1.262 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 O.aoa 0.000 0.000 0.000 0.000 0.000 0.000 0.000 a.ooo 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 Q.QQQ 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.608 0.327 0.047 0.140 0.000 0 '40 0.748 0.561 0.982 0.327 0.655 0.701 0.561 0.514 0.608 0 ~ 421 7.340 TOTAL HOURS OF VALID STABILZTY OBSERVATIONS TOTAL HOURS OP STABILITY CLASS B

TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY ClASS B

TOTAZ HOURS OP VALZD WIND DIRECTION-WZND SPEED STABILITY OBSERVATIONS TOTAL HOURS CALM 2204 161 15'7 2139 0

METEOROLOCZCAL FACZLITY:

BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AHD 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.42 METER LEVEL DATE PRINTED: 21-OCT-93 MEAN WZND SPEED

~

4.78 NOTE:

TOTALS AND SUBTOTALS ARE OBTAINED PROM UNROUNDED NUMBERS El-14

JOINT PERCENTAGE FREQUENCIES OP WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS C

(-1. 7<

DELTA T<~-I. 5 C/100 M)

BROWNS PERRY NUCLEAR PLANT JUL 1,

93 SEP 30, 93 WIND DIRECTION CALM 0.6-1.4 1.5-3.4 WIND SPEED(MPN) 3.5-5.4 5.5-7.4 7 5-12-4 12.5-18-4 18-5-24

~ 4

>>24. 5 TOTAL N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW SUBTOTAL 0.001 0.001 0.001 0.000 0.000 0.001 0.008 0.017 0.006 0.005 0.004 o.aa3 0.002 0.000 0.000 0.000 0.047 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.047 0.094 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.140 0.047 a.o47 0.094 0.000 0.000 0.047 0.561 1.169 0.327 0.374 0 ~ 281 0.187 0.140 0.000 0.000 0.000 3.273 0.094 0.234 0.234 0.047 0.047 0.094 0.094 O.O47 0.140 0.047 0.234 0.468 0.701 0.047 0.187 0.140 2.852 0.094 O.O94 0.047 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.047 0.140

0. 514 0.327 0.421 0.234 1.917 0.000, 0.000 0.000 0.047 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.281 0.187 0.047 0.561 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 o.ooa 0.000 0.047 0.000 0.047 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 a.aoo 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 0.000 0.234 0.375 0 '75 0.094 0.047 0.141 0.662 1.279 0.567 0.426 0 ~ 565 0.797 1.358 0.655 0 ~ 842 0.421 8.836 TOTAL HOURS OP VALID STABILITY OBSERVATIONS TOTAL HOURS OF STABILITY CLASS C

TOTAL HOURS OF VALID WZND DIRECTION-WIND SPEED-STABILITY CLASS C

TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED>>STABILITY OBSERVATIONS TOTAL HOURS CALM 2204 190 189 2139 1

METEOROLOGICAL FACILITY:

BROWNS FERRY NUCLEAR PLANT STABILZTY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DZRECTZON MEASURED AT 10.42 METER LEVEL DATE PRINTED: 21-OCT-93 MEAN WZND SPEED

~

4.40 NOTE:

TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS El-15

JOZNT PERCENTAGE FREQUENCIES OP WIND SPEED BY WIND DIRECTION POR STABILITY CLASS D

{-1.5< DELTA T<~-0.5 C/100 M)

BROWNS PERRY NUCLEAR PLANT JVL 1,

93 SEP 30, 93 WIND DIRECTION CALM 0.6-1.4 1.5-3.4 WIND SPEED(MPH) 3.5-5.4 5.5-').4 7.5-12.4 12.5-18.4 18.5-24.4 24 '

TOTAL N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NN'W SUBTOTAL 0.019 0.017 0.025 0.016 0.019 0.020 0.030 0.039 O.Q59 0.073 0.050 0.061 0.047 0.014 0.011 0.016 0.514 0.047 0.000 0.047 0.140 0.000 0.047 0.187 0.327 0.187 0.561 0.281 0.327 0.094 0.187 0.047 0.047 2.525 0.514 0.514 0.701 0.327 0.561 0.561 0.701 0.842 1.590 1.636 1.216 1.496 1.309 Q.234 0.281 0.421 12.903 0.888 0.421 0.327 0.327 0.094 0.047 0.187 0.748 0.888 0.421 0.187 1.636 1.403 0.655 0.608 0.561 9.397

0. 561 0.140 0.140 0.094 0.047 0.000 0.047 0.000 0.000 0.000 0.000 0.140 0.795 0.608 0.374 0.374 3.319 0.234 0.094 0.047 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.187 0.655 0.561 0.140 1 ~ 917 0.047 0.000 0.047 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.094 0.000 0.187 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0 ~ QOO 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 0.000 0.000 2.309 1.186 1.334 0.904 0.720 0.675 1 '52 1.956 2.724 2.691 1.733 3.661 3.834 2.352 1 '74 1 ~ 558 30.762 TOTAL HOURS OF VALID STABILITY OBSERVATIONS TOTAL HOVRS OF STABILITY CLASS D

TOTAL HOURS OF VALID WIND DIRECTION-WZND SPEED-STABILITY CLASS D

TOTAL HOURS OP VALID WIND DIRECTION-MIND SPEED-STABILITY OBSERVATIONS TOTAL HOURS CALM 2204 672 658 2139 11 METEOROLOGICAL PACZLZTY:

BROWNS PERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN

10. 03 AND

45. 30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.42 METER LEVEL DATE PRINTED: 21-OCT-93 MEAN WIND SPEED

~

3.79 NOTE:

TOTALS AND SUBTOTALS ARE OBTAINED PROM UNROUNDED NVMBERS El-16

JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WZND DIRECTZON FOR STABILITY CLASS E

t-0. 5<

DELTA T<~ 1.5 C/100 M)

BROWNS FERRY NUCIEAR PLANT JUL 1,

93 - SEP 30, 93 WIND DIRECTION CALM 0.6-1.4 1.5-3.4 WIND SPEED(MPH) 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4

>M24.5 TOTAL N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW SUBTOTAL 0.047 0.076 0.032 0.025 0.066 0.098 0.082 0.035 0.076 0.085 0.076 0.101 0.073 0.013 0.022 0.076 0.982 0.187 0.'187 0.281 0.047 0.234 O.468 0.421 0.140

0. 32'l 0.561 0.468 0.561 0.421 0.047 0.140 0.281 4.769

0. 514 0.935 0.187 0.327 0 '48 0.982 0.795 0.374

0. j95

0. 701 0.655 0.935 0.655 0.140 0.187 0.842 9.'771

0. 374 0.327 0.140 O.O94 0.281 0.094 0.094 0.281 0.094 0.140 0.094 0-140 0.468 0.140 0.234 0.748 3.740 O.Q94 0.047 0.047 0.000 0.000 0.000 0.000 0.000 0.094 0.047 0.000 0 ~ 000 0.000 0.000 0.140 0.094 0.561 0.047 0.000 0.047 a.oaa 0.000 0.000 0.000 0.000 0.000 0.047 0.000 0.000 0.000 0.094 0.140 0.094 0.468 0.000 0.047 0.000 0.000 0.000 0.000 a.ooo 0.000 0.000 o.aaa 0.000 0.000 0.000 0.000 0.047 O.OQO 0.094 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 Q.aao 0.000 0.000 0.000 0.000 0.000 0.000 o.oon 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 1.263 1 ~ 619 0.733 0.493 1.329 1.641 1.391 0.829 1.385 1.581 1.291 1.737 1.615 0.433

0. 910 2.133 20.383 TOTAL HOURS OF VALID STABZLZTY OBSERVATIONS TOTAL HOURS OF STABILITY CLASS E

TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED STABILITY CLASS E

TOTAL HOURS OF VAZID WIND DIRECTION-WIND SPEED STABILITY OBSERVATIONS TOTAL HOURS CALM 2204 465 436 2139 21 METEOROLOGICAL FACILITY:

BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA T BETWEEN 10 03 AND 45

~ 30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.42 METER ZEVEL DATE PRZNTED: 21-OCT-93 MEAN WIND SPEED

~

2.59 NOTE:

TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS

JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS F

( 1.5<

DELTA T<~ 4.0 C/100 Ml BROWNS FERRY NUCLEAR PLANT JUL 1,

93 - SEP 30, 93 WIND DIRECTION CALM 0.6-1.4 1.5-3.4 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 N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW SUBTOTAL 0.052 o.044 0.036 0.037 0.033 0.016 0.005 0.003 o.oa3 0.001 0.007 0.001 0.005 0.004 0.005 0.028 0.281

0. 421

0. 514 0.327 0.187 0.234 0.047 0.094 O.O47 0.000 0.094 0.000 0.047 0.094 O.O47 0.140 2.712 1.403 1.122 0.748 0.982 0.982 0.327 0.140 0.000 0.047 0.047 0.140 0.04'7 0.140 0.047 0.140 0.842 7.153 0.327 0.655 0.094 0.140 0.281 a.a47 0.000 0.000 0.000 0.000 0.047 0.000 0.000 0.000 0.094 Q.187 1.870 0.140 0.000 0.094 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.047 0.000 0.000 0.000 0.047 0.327 0.000 0.000 o.ooa 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 O.OQO 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 o.aoo 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 0.000 0.000 o.oon 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 2.343 2.241 1.485 1.486 1.483 0.624 0.192 0.096 0.096 0.048 0.287 0.095 0.192 0.144 0.286 1.243 12.342 TOTAL HOURS OF VALID STABILITY OBSERVATIONS TOTAL HOVRS OF STABILITY CLASS F

TOTAL HOURS OF UALID WIND DIRECTION-WIND SPEED-STABILITY CLASS F

TOTAL HOURS OF VALID WZND DIRECTION-WZND SPEED-STABILITY OBSERVATIONS TOTAL HOVRS CALM 2204 274 264 2139 6

METEOROLOGICAL FACILITY:

BROWNS FERRY NVCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.42 METER LEYEL DATE PRZHTED:

21-OCT-93 MEAN WIND SPEED

~

2.39 NOTE'OTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS

JOZNT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS G

(DELTA T

> 4.0 C/100 M)

BROWNS FERRY NUCLEAR PLANT JUL 1,

93 - SEP 30, 93

'WIND D'ZRECTION CALM 0.6-1.4 1.5>>3.4 WIND SPEED(MPH) 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4

)s24.5 TOTAL N

NNE NE ENE E,

ESE SE SSE S

SEW SW WSW W

WNW NW NNW

0. 157 0.113 0.062 0.051 0.044 0.007 0.011, 0.007 0.000 0.004 0.000 0.007 0.004 0.007 0.007 0.033 0.561 0.187 0.421 0.047 0.047 0 ~ 094 0.047 0.000 0.000 0.047 0.000 0.094 0.047 0.047 0.047 0.234

l. 449 1.262 0.374 0.608

0. 514 0.000 0.094 0.094 0.000 0.000 0.000 0.000 0.000 0.047 0.047 0.187 0.608 1.730 0.000 0.094 0.187 0.000 0.000 Q.QQQ 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.047 0.000 a.aaa 0.000 0.000 0.000 0.000'.000 0.000 0.000 Q.aaa 0.000 0.000 0.000 Q.QQQ 0.000 0.000 0.000 0.000 0.000 0.000 0.000 Q.oaa 0.000 0.000 0.000 a.aaa 0.000 0.000 0.000 Q.aaa 0.000 0.000 0.000 0.000 0.000 0.000 0.000 a.aaa 0.000 0.000 0

F 000 0.000 0.000 0.000 0.000 0.000 Q.QQQ 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 Q.aaa 0.000 0.000 0.000 Q.aaa 0.000 0.000 0.000 Q.QQQ 0.000 0.000 0.000 0.000 0.000 0.000 0.000 2.775 3.339 0.857 0.799 0.'792 0.101 0.151 0.101 0.000 0.050 0.000 0.101 0.050 0.101 0.101 0.454 SUBTOTAL 0.514 1.917 4.675 2.618 0.047 0.000 0.000 0.000 0.000 9.771 TOTAL HOURS OF VALID STABZLITY OBSERVATIONS TOTAL HOURS OF STABILITY CLASS G

TOTAL HOURS OF VALID WINO DZRECTZON-WZND SPEED-STABILITY CLASS G

TOTAL HOURS OF VALID WIND DIRECTION WIND SPEED STABILITY OBSERVATIONS TOTAL HOURS

CALM, 2204 214 209 2139 11 METEOROLOGICAL FACILITY:

BROWNS FERRY NUCLEAR PLANT STABILZTY BASED ON DELTA T BETWEEN 10 03 AND 45 30 METERS WIND SPEED AND DZRECTION MEASURED AT 10.42 METER LEVEL DATE PRINTED: 21-OCT-93 MEAN WIND SPEED

~

2'5 NOTE:

TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS El-19

Radiological Impact Assessment Browns Ferry Nuclear Plant July - December 1993 Table 7 Joint Frequency Distribution in Percent for Ground Level Releases Fourth Quarter E1-20

JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS A

{DELTA T<~-1.9 C/100 M)

BROWNS FERRY NUCLEAR PLANT OCT 1,

93 DEC 31, 93 WIND DIRECTION CALM 0.6-1.4 1.5-3.4 WIND SPEED{MPH) 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4

>a24.5 TOTAL N

NNE NE ENE E

ESE SE SSE

-S SSW SW WSW W

WNW NW NNW 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 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 0.274 0.274 0.274 0.046 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.183 0.686 0.823 0.366 0.320 0.320 0.137 0.000 0.046 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.091

0. 137 0.000 0.091 0.091 0.000 0.137 0.000 0.000 0.091 0.000 0.229 0.320 0.091 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.091 0.137 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.046 0.046 0.000 0.046 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 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.366 0.366 0.091 0.000 0.000 0.274 1.097 1.097 0.732 0.457 0.366 0.274 0.046 0.091 0.091 0.137 SUBTOTAL 0.000 0.000 0.914 2.881 0.686 0.732

0. 274 0.000 0.000 5.487 TOTAL HOURS OF VALID STABZLITY OBSERVATIONS TOTAL HOURS OF STABILITY CLASS A

TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS A TOTAL HOURS OF VAZ ZD WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS TOTAL HOURS CALM 2201 120 120 2187 0

METEOROLOGICAL FACILITY:

BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELT*-T BETWEEN 10.03 AND 45-30 METERS WZND SPEED AND DIRECTION MEASURED AT 10.42 METER LEVEL DATE PRINTED 24-JAN-94 MEAN WIND SPEED

~

5.54 NOTE:

TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS El-21

JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS B

t-1.9<

DELTA T<~-1.7 C/100 H)

BROWNS FERRY NUCLEAR PLANT OCT 1,

93 -

DEC 31, 93 WIND DIRECTION CALM 0.6-1.4 1.5-3.4 WIND SPEED(MPH) 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 lb.5-24.4

>~24.5 TOTAL N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW 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 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 0.046 0.000 0.000 0.000 0.091 0.274 0.137 0.091 0.000 0.046 0.000 0.000 0.000 0.046 0.046 0.000 0.000 0.000 0.046 0.183 0.137 0.046 0.000 0.091 0.091 0.091 0.046 0.000 0.046 0.091 0.137 0.091 0.000 0.000 0.000 0.046 0.046 0.000 0.000 0.000 0.000 0.091 0.000 0.000 0.320 0.046 0.183 0.183 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.046 0.137 0.183 0.137 0.091 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 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 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.457 0.274 0.046 0.000 0.046 0.229 0.274 0.320 0.137 0.183 0.091 0.229 0.091 0.137 0.549 0.320 SUBTOTAL 0.000 0.000 0.732 0.914 0.777 0.869 0.091 0.000 0.000 3.384 TOTAL HOURS OF VALID STABZLZTY OBSERVATIONS TOTAL HOURS OF STABZLZTY CLASS B

TOTAL HOURS OF VALID WZND DZRECTION-WZND SPEED-STABILITY CLASS B

TOTAL HOURS OF VALZD WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS TOTAL HOURS CALM 2201 74 74 2187 0

METEOROLOGICAL FACILITY:

BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.42 METER LEVEL DATE PRINTED: 24-JAN-94 MEAN WIND SPEED M

6.18 NOTE:

TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS El-22

JOINT PERCENTAGE FREQUENCIES OF WZND SPEED BY WIND DIRECTION FOR STABZLZTY CLASS C

(-1.7<

DELTA T<=-1.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT OCT 1,

93 DEC 31, 93 WIND DIRECTION CALM

0. 6-1. 4 1.5-3.4 WZND 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 N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW 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 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 0.549 0.320 0.183 0.183 0.091 0.000 0.046 0.000 0.046 0.000 0.137 0.000 0.046 0.000 0.000 0.091 0.091 0.183 0.091 0.091 0.000 0.046 0.091 0.137 0.091 0.000 0.000 0.091 0.046 0.000 0.000 0.000 0.046 0.046 0.000 0.000 0.000 0.000 0.183 0.091

0. 229 0.137 0.137 0.046 0.091 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.229 0.183 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 0.091 0.046 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 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0 F 000 0.000 0.000 0.000 0.000 0.274 0.137 0.183 0.000 0.000 0.091 0.686

0. 549

0. 274 0.274 0.091 0.046 0.320 0.549 0.594 0.137 SUBTOTAL 0.000 0.000

1. 417 1.097 0.869 0.686 0.137 0.000 0.000 4.207 TOTAL HOURS OF VAIZD STABZLZTY OBSERVATIONS TOTAL HOURS OF STABILITY CLASS C

TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILZTY CLASS C

TOTAL HOURS OF VALID WIND DIRECTION WIND SPEED-STABILITY OBSERVATIONS TOTAL HOURS CALM 2201 92 92 2187 0

METEOROLOGICAL FACILITY:

BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WZND SPEED AND DIRECTION MEASURED AT 10.42 METER LEVEL DATE PRINTED: 24-JAN-94

'MEAN WIND SPEED

~

5.38 NOTE:

TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS El-23

JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS D

(-I ~ 5<

DELTA T<~-0. 5 C/100 M)

BROWNS FERRY NUCLEAR PLANT OCT 1 ~

93 DEC 31, 93 WIND DIRECTION CALM 0.6-1.4 1.5-3.4 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 N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW SUBTOTAL 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 0.091 0.046 0.046 0.000 0.046 0.000 0.000 0.000 0.046 0.137 0.046 0.046 0.000 0.000 0.000 0.000 0.503

0. 229 0.366 0.366 0.183 0.366 0.320 1.372 1.738 1.829 0.457 0.457 0.366 0.457 0.046 0.137 0.137 8.825 0.503 0.823 0.823 0.412 0.640 0.914 0.183 0.732 0.549 0.594 0.640 0,457 0.412 0.183 0.549 0.549 8.962 0.640 0.274 0.183 0.046 0.000 0.640 0.457 0.091 0.091 0.000 0.046 0.412 0.320 0.366 0.320 0.549 4.435 1.509 0.366 0.091

.0. 000

0. 000 0.046 0.046 0.000 0.000 0.000 0.000 0.366 0.366 1.509 2.058 2.698 9.053 0.320 0.183 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.457 1.235 0.640 2.835 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 0.091 0.229 0.000 0.320 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 3.292 2.058 1.509 0.640 1.052 1.920 2.058 2.561 2.515 1.189 1.189 1.646 1.555 2.652 4.527 4.572 34.934 TOTAL HOURS OF VALID STABILITY OBSERVATIONS TOTAL HOURS OF STABILITY CLASS D

TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS D

TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS TOTAL HOURS CALM 2201 769 764 2187 0

METEOROLOGICAL FACZLITY:

BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.42 HETER LEVEL DATE PRINTED: 24-JAN-94 MEAN WIND SPEED

~

6.52 NOTE TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS El-24

JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION POR STABILITY CLASS E

(-0 5<

DELTA T<~ 1.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT OCT 1

~

93 DEC 31 i 93 WIND DIRECTION CALM 0.6-1.4 1.5-3.4 WIND SPEED(MPH) 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4

>a24.5 TOTAL N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW 0.008 0'. 003 0.005 0.003

0. 010

0. 016 0.021

0. 021 0.015 0.007 0.004 0.008 0.006 0.002 0.002 0.009 0.091 0.046 0.091 0.000 0.091 0.229 0.274 0.320 0.183 0.091 0.183 0.091 0.091 0.046 0.000 0.046 0.640 0.183 0.366 0.274 0.777 1.235 1.646 1.600 1.189 0.503 0.137 0.594 0.412 0.137 0.137 0.732 0.412 0.320 0.137 0.183 0.869 1.417 0.960 0.914 0.869 0.274 0.183 0.320 0.229 0.137 0.000 0.686 0.046 0.366 0.046 0.000 0.046 0.640 0.229

.0.137 1.006 0.000 0.046 0.000 0.091 0.137 0.000 0.366 0.320 0.046 0.000 0.000

'0.000 0.137 0.046 0.046 0.274 0.000 0.000 0.046 0.183 0.046 0.412 0.914 0.137 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 0.183 0.091 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 0.000 0.000 0.000 0.000

'0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 1.654 0.963 0.645 0 '60 1.793 3.674 3.176 3.039 3.536 0.875 0.552 1.059

1. 011 0.505 0.733 2.844 SUBTOTAL

0. 137 1.875 10.562 7.910 3.155 2.469 0.412 0.000 O.noo 26.520 TOTAL HOURS OF VALID STABILZTY OBSERVATIONS TOTAL HOURS OP STABILITY CLASS E

TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILZTY CLASS E

TOTAL HOURS OF VALID WIND DIRECTZON-WIND SPEED-STABILITY OBSERVATIONS TOTAL HOURS CALM 2201 587 580 2187 3

METEOROLOGICAL PACILITY:

BROWNS PERRY NUCLEAR'PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT

10. 42 METER LEVEL DATE PRINTED: 24-JAN-94 MEAN WIND SPEED

~

4.14 NOTE:

TOTALS AND SUBTOTALS ARE OBTAINED PROM UNROUNDED NUMBERS E1-25

JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS F

( 1.5<

DELTA T<~ 4.0 C/100 M)

BROWNS FERRY NUCLEAR PLANT OCT 1,

93 DEC 31, 93 WIND DIRECTION CALM 0.6-1.4 '.5-3.4 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 N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW SUBTOTAL 0.003 0.003 0.002 0.003 0.007 0.006 0.007 0.005 0.002 0.001 0.000 0.000 0.000 0.001 0.001 0.002 0.046 0.000 0.046 0.274 0.137 0.137 0.137 0.366 0.366 0.046 0.137 0.046 0.000 0.046 0.046

0. 137 0.046 1.966 0.732 0.640 0.183 0.457 1.417 1.235 1.189 0.732 0.457 0.046-0.000 0.046 0.046 0.091

0. 183 0.366 7.819 0.320 0.320 0.000 0.091 0.686 0.183 0.320 0.183 0.320 0.091 0.000 0.000 0.000 0 F 000 0.046 0.091 2.652 0.046 0.366 0.000 0.000 0.000 0.000 0.000 0.091 0.503 0.000 0.000 0.000 0.000 0.000 0.000 0.183 1.189 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.046 0.137 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.229 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 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 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 1.101 1.421 0.459 0.689 2.248

1. 561 1.882 1.423 1.466 0.275 0.046 0.046 0.092 0.138 0.367 0.688 13.900 TOTAL HOURS OF VALID STABILITY OBSERVATZONS TOTAL HOURS OF STABILITY CLASS F

TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS F

TOTAL HOURS OF VALID WIND DZRECTION WZND SPEED STABILITY OBSERVATIONS TOTAL HOURS CALM 2201 306 304 2187 1

METEOROLOGICAL FACILITY:

BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT

10. 42 METER LEVEL DATE PRINTED: 24-JAN-94 MEAN WIND SPEED

~

3.01 NOTE:

TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS

JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABZLITY CLASS G

(DELTA T

> 4.0 C/100 M)

BROWNS FERRY NUCLEAR PLANT OCT 1,

93 -

DEC 31, 93 WIND DIRECTION CALM 0.6-1.4 1.5-3.4 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 N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW 0.022 0.021 0.019 0.017 0.011 0.005 0.005 0.022 0.004 0.001 0.001 0.001 0.000 0.000 0.002 0.006

0. 549 0.457 0.320 0.183 0.091 0.137 0.183 0.412 0.137 0.046 0.046 0.046 0.000 0.000 0.137 0.320 1.052 1.097 1.052 1.097 0.732 0.229 0.183 1.235 0.183 0.000 0.046 0.000 0.000 0.000 0.000 0.137 0.229 0.503 0.046 0.046 0.137 0.000 0.000 0.183 0.137 0.000 0.000 0.000 0.000 0.000 0.000 0.046

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 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 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 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 1.851 2.079 1.436 1.343 0.971 0.371 0.371 1.851 0.462 0.046 0.093 0.046 0.000 0.000 0.139 0.509 SUBTOTAL 0.137 3.064 7.042 1.326 0.000 0.000 0.000 0.000 0.000 11.568 TOTAL HOURS OF VALZD STABILITY OBSERVATIONS TOTAL HOURS OF STABILITY CLASS G

TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS G

TOTAL HOURS OF VALID WZND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS TOTAL HOURS CALM 2201 253 253 2187 3

METEOROLOGICAL FACILITY:

BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN

10. 03 AND

45. 30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.42 METER LEVEL DATE PRINTED: 24-JAN-94

)(EAN WIND SPEED

~

2.12 NOTE:

TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS El-27

Radiological impact Assessment Browns Ferry Nuclear Plant July - December 1993 Table 8 Joint frequency Distribution in Percent for Split Level Releases Ground Level Portion Third Quarter El-28

SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS A t DELTA T<~-1. 9 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 1

OF 2

GROUND LEVEL RELEASE MODE

'JUL 1,

93 - SEP 30, 93 WZND DIRECTION CALM

0. 6-1. 4 1.5-3.4 WIND SPEED(MPH) 3.5-5.4 5.5-3.4 7.5-12.4 12.5-18.4 18.5-24.4 24.5 TOTAL N

N4lE NE ENE E

ESE SE SSE S

SSW SW WSW W

WN'W NW NNW SUBTOTAL 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 a.aoo 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 Q.QQQ 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.002 0.044 0.012 0.000 0.003 0.000 0.000 0.000 0.000 0.000 0.061 0.001 0.000 0.000 0.000 0.000 0.002 Q.Q37 0.082 0.111 0.022 0.040 0.000 0.000 0.000 0.000 0.000 0.296 0.009 0.005 0.003 0.000 0.000 0.004 o.oao 0.000 0.037 0.000 0.002 0.002 0.001 0.000

0. 017 0.000 0.081 0.041 0.006 Q.Q15 0.006 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.006 0.050 0.030 0.155 0.000 0.000 a.ooo 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 o.aoo 0.000 0.009 0.038 0.000 0.048 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 Q.QQQ 0.000 0.000 0.000 a.aao 0.000 0.000 0.000 0.000 Q.QQQ 0.000 0.000 0.000 0.000 0.052 0.011 0.018 0.006 0.000 0.006 0 ~ 039 0.125 0.161 0.022 0.046 0.002 0.001

0. 016

0. 106 0.030 0.640 TOTAL HOURS OF VALID OBSERVATIONS TOTAL HOURS OF GROUND LEVEL RELEASE TOTAL HOURS OF STABILITY CIASS A TOTAL HOURS OF GROUND LEVEL STABILITY CLASS A 2036.000 93.700 13.040 13.040 METEOROLOGZCAL FACZLITY BROWNS FERRY NUCIEAR PLANT STABILITY BASED ON DEITA-T BETWEEN 10.03 AND 45.30 METERS WIND DIRECTION MEASURED AT 10.42 METER LEVEL WIND SPEED MEASURED AT 10.42 METER LEVEL EFFLUENT VELOCITY ~ 12.60 M/S DATE PRZHTED:

21 OCT-93 NOTE: 'OTALS AHD SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS El-29

~-

SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DZRECTZON FOR STABILITY CLASS B

(-1.9<

DELTA TC66-1.7 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 1

OF 2

GROUHD LEVEL RELEASE MODE JUL 1,

93 SEP 30, 93 WIND DIRECTION CALM 0.6-1.4 1.5-3.4 WIND SPEEDtMPH) 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4

>a24.5 TOTAL NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW HNW SUBTOTAL 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 0.000 0.000 0.000 0.000 0.000 0.000 Q.QQQ 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 Q.QQQ 0.000 0.000 0.005 0.003 0.005 0.000 0.000 0.000 0.000 0.000 0.000 Q.014 0.002 0.000 0.000 0.000 o.ooo 0.012 0.012 0.000 0.020 0.000 0.008 0.015 0.000 0.000 0.000 0.000 Q.Q68 0.026 0.006 0.000 0.003 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.005

0. 00'7 0.007 0.002 0.017 0.074 0.015 0.006 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 Q.Q13 0.029 0.048 0.014 0.124 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 o.ooo 0.000 0.000 0.000 0.000 0.000 0.000 Q.QQQ 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 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 Q.QQQ 0.000 0.043 0.012 0.000 0.003 0.000 0.012 0.012 0.005 0.023 0.005 0.008 0.020 0.020 0.036 0.050 0.031 0.280 TOTAL HOURS OF VALID OBSERVATIONS TOTAL HOURS OF GROUND LEVEL RELEASE TOTAL HOURS OF STABILITY CLASS B

TOTAL HOURS OF GROUND LEVEL STABILITY CLASS B

2036.000 93.700 6.640 5.710 METEOROLOGICAL FACILITY:

BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND DZRECTZON MEASURED AT 10.42 METER LEVEL WIND SPEED MEASURED AT 10.42 METER LEVEL EFPLUENT VELOCZTY ~ 12.60 M/S DATE PRINTED: 21-OCT-93 NOTE:

TOTALS AND SUBTOTAIS ARE OBTAINED FROM UNROUNDED NUMBERS E1-30

SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILZTY CLASS C

(-I. 7<

DELTA T<II-1.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 1

OF 2

GROUND LEVEL RELEASE MODE JUL 1,

93 - SEP 30, 93 WIND D1RECTZON CALM 0.6-1.4 1.5-3.4 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 N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW 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 0.000 0.000 0.000 0.000 a.aoo 0.000 0.000 0.000 0.000 a.ooo 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 D.OOO 0.003 0.008 0.000 0.000 0.000 0.000 0.000 0.000 0.002 0.003 0.000 0.000 0.000 0.005 0.008 0.010 0.018 0.004 0.006 0.013 0.007 0.000 O.OOQ 0.000 0.005 0.007 0.003 0.000 0.000 0.000 0.000 0.000 0.000 o.ooa 0.009 0.012 0.031 Q.Q20 0.026 0.013 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 0.026 0.023 0.009 o.oao 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0 ~ 000 Q.aoo 0.000 0.000 0.000 0.000 0.010 o ~ ooo 0.000 0.000 0.000 0.000 0.000 Q.aaa 0.000 0.000 0.000 0.000 O.OOQ 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 O.ODO O.oaa 0.007 Q.01Q 0.003 0.000 0.000 0.005 0.008

0. 010 0.021 0.012 0.015 0.025 0.038 0.046 0.058 0.022 SUBTOTAL o.aoo 0.000 0.011

0. 077 0.125 0.057 0.010 0.000 0.000 0.280 TOTAL HOURS OF VALID OBSERVATIONS TOTAL HOURS OF GROUND LEVEL RELEASE TOTAL HOVRS OF STABILITY CLASS C

TOTAL HOURS OF GROUND LEVEL STABZLZTY CLASS C

C 2036.000 93.700 15.190 5.710 METEOROLOGICAL FACILITY:

BROWNS FERRY NVCLEAR PLANT STABILITY BASED ON DELTA T BETWEEN 10 03 AND 45 30 METERS WIND DIRECTZON MEASURED AT 10.42 METER LEVEL WZND SPEED MEASURED AT 10 '2 METER LEVEZ EFFLUENT VELOCITY 12.60 M/S DATE PRINTED: 21-OCT-93 NOTE:

TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROVNDED NUMBERS

SPLIT JOINT PERCENTAGE FREQUENCIES OP WIND SPEED BY WIND DIRECTION POR STABILITY CLASS D

(-1.5<

DELTA T<66-0.5 C/100 M)

BROWHS PERRY NUCLEAR PLANT PART 1

OP 2

GROUND LEVEL RELEASE MODE JUL 1,

93 - SEP 30, 93 WIND DIRECTION CALM 6. 6-1. 6 1.5-3.4 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 H

HHE NE EHE E

ESE SE SSE S

SSW SW WSW W

WHW NW NNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 o.ooa 0.000 0.000 0.000

,0. 000

0. 000 0.000, 0.000 a.ooo 0.000 0.000 0.000 0.000 0.004 0.000 0.001 0.000 O.OQO 0.000 0.000 0.000 0.000 0.000 0.000 0.000 o.oao 0.002 0.000 0.016 0.050 0.112 0.074 0.017 0.013 0.005 0.001 0.000 0.000 0.033 0.014 0.009 0.009 0.001 0.005 0.021 0.141 0.170 0.065

0. 021.

0.106 0.044 0.016 0.003 0.013 0.056 0.018 0.013 0.008 0.005 0.000 0.008 0.000 0.000 0.000 0.000 0.018 0.081 0.046 0.037 0.045 0.028 0.019 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.029 0.078 0.077 0.025 0.'030 0.000 0.025 0.000 0.000 o.aoo 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 O.Q43 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 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 0.147 0.051 0.047 0.017 0.009 0.005 0.046 0.196 0.282 0.141 0.038 0.137 0 ~ 159 0.141 0 ~ 161 0.083 SUBTOTAL 0.001 0.006 0.290 0.672 0.335 0.255 0.098 0 ~ 000 0.000 1 '58 TOTAL'OURS OF VALID OBSERVATIONS TOTAL HOURS OF GROUND IEVEL RELEASE TOTAL HOURS OP STABILITY CLASS D

TOTAL HOURS OF GROUND LEVEL STABILITY CLASS D

2036.000 93.700 1136.070 33.760 METEOROLOGICAL FACILITY:

BROWNS PERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND DIRECTION MEASVRED AT 10 '2 METER LEVEL WIND SPEED MEASURED AT 10.42 METER LEVEL EFFLUENT VELOCITY ~ 12.60 M/S DATE PRZNTED:

21-OCT-93 NOTE TOTALS AND SVBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS El-32

SPLIT JOINT PERCENTAGE FREQUENCIES OF'IND SPEED BY WIND DIRECTIOH FOR STABILITY CLASS E

t 0. 5<

DELTA T<~ 1. 5 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 1

OF 2

GROUND LEVEL RELEASE MODE JUL 1,

93 - SEP 3Q, 93 WIND DIRECTION CALM 0.6-1.4 1.5-3.4 WIND SPEED{MPH) 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18 '

18.5-24 '

>a24.5 TOTAL N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW 0.000 0.000 0.000, 0.000 0.000 0.001 0.001 0.001 0.002 0.001 0.000 o.oao 0.000 0.000

0. 000.

0.000 0.000 0.002 0.000 0.000 0.004 0.000 0.000 0.000 0.004 0.000 0.001 0.000 0.000 0.000 0.000 0.000 0.002 0.017 0.000 0.003 0.003 0.039 0.064 0.037 O.O84 0.048 0.011 0.001 0.003 0.000 0.003 0.013 0.030 0.014 0.011 0.001 0.018 0.010 o.a18 0.056 0.019 0.024 0.004 o.ao6 0.026 0.005 0.005 0.060 0.014 0.007 0.007 0.000 0.000 0.000 0.000 0.000 0.021 0.010 0.000 0.000 0.000 0.000 Q.017 0.013 0.009 0.000 0.009 0.000 0.000 0.000 0.000 0.000 0.000 0.023 0.000 0.000 0.000 0.009 0.024 0.009 0.000 0.024 0.000 0.000 0.000 0.000 0.000 0.000 0.000 Q.aaa 0.000 0.000 0.000 0.000 0.012 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 O.QOO 0.000 0.000 0.000 0.000 o.aoo 0.000 0.000 0.'000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 o.aoo 0.000 0.000 0.000 0.000 0.000 0 ~ 000 0.056 0.064 0.028 0.004 0.025 0.049 0.084 0.094 0.130 0.105 0.016 0.007 0.029 0.015 0.062 0.096 SUBTOTAL 0.006 0.011 0.329 0.308 0.091 0.083 0.035 o.oao 0.000 0.864 TOTAL HOURS OF VALID OBSERVATIONS TOTAL HOURS OF GROUND IEVEL RELEASE TOTAL HOURS OF STABILITY CLASS E

TOTAL HOURS OF GROUND LEVEL STABILITY CLASS E

2036.000 93.700 637.690 17.590 METEOROLOGICAL FACZIITY:

BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND DIRECTION MEASURED AT 10*42 METER LEVEL WIND SPEED MEASURED AT 10.42 METER LEVEL EFFLUENT VELOCITY ~ 12 '0 M/S DATE PRINTED: 21-OCT-93 NOTE:

TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS El-33

SPLIT JOZNT PERCENTAGE FREQUENCIES OP WIND SPEED BY WIND DIRECTION POR STABILITY CLASS F

(

1 5<

DELTA T<

4 0 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 1

OF 2

GROUND LEVEL REIEASE MODE JUL 1,

93 SEP 30, 93 WIND DIRECTION CALM 0.6-1.4 1.5-3.4 WIND SPEED(MPH) i.i-i.i SOS-V.4 7.5-12.4 12.5-18.4 18.5-24.4

>~24.5 TOTAL N

NilE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 O.OOD 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.002 0.000 0.000 O.OQ2 0.000 0.000 0.006 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.065 0.039 0.009 0.009 0.004 0.008 0.003 0.000 0.009 0.000 0.000 0.000 O.QOO 0.000 0.000 0.025 0.035 0.057 0.006 0.015 0.007 0.003 0.000 0.000 0.000 0.000 0.005 0.000 o.ooa 0.000 0.005 0.025 0.005 0.000 0.017 O.OOQ 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.005 0.000 0.000 0.000 0.008 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 o.aoo 0.000 0.000 0.000 0.000 0.000 0.000 O.OQO 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 o.oao 0.000 O.ODO 0.000 0.000 0.000 0.000 O.OOQ 0.000 0.000 0.000 O.ODO 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.106 D.a96 0.034 0.025 0.011 0.014 0.003 0.000 0.015 0.000 0.005 0.005 0.000 0.000 0.005 0.058 SUBTOTAL 0.000

0. 011

0. 171 0.159 0.036 0.000 0.000 0.000 O.OQO

0. 3'I8 TOTAL HOURS OF VALID OBSERVATIONS TOTAL HOURS OF GROUND LEVEI RELEASE TOTAL HOURS OF STABILITY CLASS F

TOTAL HOURS OF GROUND LEVEL STABILZTY CLASS P

2036.000 93.700 158.800 7.700 METEOROLOGICAL PACZLITY:

BROWNS PERRY NUCLEAR PLANT STABILZTY BASED ON DELTA T BETWEEN 10+03 AND 45 30 METERS WIND DZRECTZON MEASURED AT 10.42 METER LEVEL WIND SPEED MEASURED AT 10.42 METER LEVEL EFFLUENT VELOCITY ~ 12.60 M/S DATE PRINTED: 21-OCT-93 NOTE TOTALS AND SUBTOTALS ARE OBTAZNED FROM UNROUNDED NUMBERS El-34

SPLIT BOINT PERCENTAGE FREQUENCIES OF WZND SPEED BY WIND DIRECTION FOR STABZI ITY CLASS G

(DELTA T

> 4.0 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 1

OF 2

GROUND LEVEL RELEASE MODE JUL 1,

93 - SEP 30, 93 WIND DIRECTION CALM 0.6-1.4 1.5-3.4 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 N

NNE NE ENE E

ESE SE SSE 5

SSW SW WSW W

WNW NW NNW SUBTOTAL 0.001 0.001 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 a.ooo 0.000 0.000 o.ooa 0.000 0.003 0.008 0.000 0.000 0.000 0.000 0.002 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 o.aao 0.000 0.010 0.081 0.089 0.007 0.008

0. 014 0.000 0.004

0. 001 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000

0. 206 0.034 0.213 0.000 0.006 0.020 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.273 a.aoo 0.009 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 0.009 0.000 0.000 0.000 o.aaa 0.000 0.000 Q.QQQ 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 o.oaa 0.000 0.000 Q.QQQ 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 Q.QQQ 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 Q.oaa 0.000 0.000 Q.QQQ 0.000 0.124 0.312 0.007 0.014 0.034 0.002 0.004

0. 001 0 ~ 000 0.000 0.000 0.000 0.000 0.000 0.000 o.ooa 0.500 TOTAL HOURS OP VALID OBSERVATIONS TOTAL HOURS OF GROUND LEVEZ RELEASE TOTAL HOURS OF STABILITY CLASS G

TOTAL HOURS OF GROUND LEVEL STABILITY CLASS G

2036.000 93.7aa 68.570 10.190 METEOROLOGICAL PACILITY:

BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45-30 METERS WIND DZRECTZON MEASURED AT 10.42 METER LEVEL WIND SPEED MEASURED AT 10.42 METER LEVEL EFPLUENT VELOCITY ~ 12 '0 M/S DATE PRINTED: 21-OCT-93 NOTE:

TOTALS AND SUBTOTALS ARE OBTAINED PROM UNROUNDED NUMBERS

Radiological Impact Assessment Browns Ferry Nuclear Plant July - December 1993 Table 9 Joint Frequency Distribution in Percent for Split Level Releases Ground Level Portion Fourth Quarter f

El-36'

SP) ZT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WZND DIRECTION FOR STABILITY CLASS A (DELTA T<=-1 ~ 9 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 1

OF 2

GROUND LEVEL RELEASE MODE OCT 1,

93 DEC 31, 93 WIND DIRECTION CALH 0.6-1.4 1.5-3.4 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 N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW SUBTOTAL 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 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 0.008 0.004 0.001 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.013 0.000 0.000 0.000 0.000 0.000 0.020 0.023 0.106 0.011 0.026 0.027 0.017 0.000 0.000 0.000 0.000 0.230 0.000 0.005 0.000 0.000 0.000 0.011 0.022 0.000 0.016 0.017 0.000 0.021 0.000 0.000 0.007 0.000 0.100 0.037 0.046 0.013 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. 015 0.111 0.038 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.009 0.009 0.000 0.009 0.065 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 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 o.noo 0.000 0.000 0.000 0.075 0.051 0.013 0.000 0.000 0.031 0,053 0.110 0.028 0.042 0.027 0.038 0.009 0.009 0.007 0.024 0.518 TOTAL HOURS OF VALID OBSERVATIONS TOTAL HOURS OF GROUND LEVEL RELEASE TOTAL HOURS OF STABILITY CLASS A

TOTAL HOURS OF GROUND LEVEL STABILITY CLASS A

2190.000 227.960 11.340 11.340 METEOROLOGICAL FACILITY:

BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA T BETWEEN 10 '3 AND 45.30 METERS WIND DIRECTION HEASURED AT 10.42 METER LEVEL WIND SPEED MEASURED AT 10.42 HETER LEVEL EFFLUENT VEI OCITY ~ 12.60 H/S DATE PRINTED: 24-JAN-94 NOTE:

TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUHBERS E1-,37.

SPLZT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS B

(-1.9<

DELTA T<ss-1.7 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 1

OF 2

GROUND LEVEL RELEASE MODE OCT 1,

93 DEC 31, 93 WIND DIRECTION CALM 0.6-1.4 1.5-3.4 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 N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW 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 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 F 005 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.001 0.000 0.000

-0.000 0.000 0.006 0.009 0.006 0.000 0.000 0.000 0.005 0.000 0.000 0.000 0.001 0.012 0.005 0.000 0.000 0.000 0.005 0.008 0.000 0.000 0.000 0.000 0.012 0.000 0.000 0.023 0.003 0.029 0.026 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0

009 0.024 0.025 0.021 0.035 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 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 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.077 0.032 0.000 0.000 0.000 0.011 0.022 0.006 0.000 0.000 0.000 0.018 0.009 0.024 0.048 0.026 SUBTOTAL 0.000 0.000 0.005 0.030 0.069 0.134 0.035 0.000 0.000 0.272 TOTAL HOURS OF VALID OBSERVATIONS TOTAL HOURS OF GROUND LEVEL RELEASE TOTAL HOURS OF STABILITY CLASS B

TOTAL HOURS OF GROUND LEVEL STABILITY CLASS B

2190.000 227.960 8.780 5.960 METEOROLOGICAL FACILITY:

BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND DIRECTION MEASURED AT 10.42 HETER LEVEL WIND SPEED MEASURED AT 10.42 METER LEVEL EFFLUENT VELOCITY I 12.60 M/S DATE PRINTED: 24-JAN-94 NOTE:

TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS El-38

SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS C

{-1.7<

DELTA T<=-1. 5 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 1

OF 2

GROUND LEVEL RELEASE MODE OCT 1,

93 DEC 31, 93 WIND DIRECTION CALM 0.6-1.4 1.5-3.4 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 N

NNE NE ENE E

ESE SE SSE S

SEW SW WSW W

WNW NW NNW SUBTOTAL 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 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 0.006 0.000 0.002 0.005 0.000 0.000 0.000 0.000 0.000 0.000 0.014 0.000 0.000 0.001 0.000 0.000 0.005 0.007 0.017 0.000 0.002 0.000 0.000 0.002 0.000 0.000 0.000 0.034 0.000 0 '07 0.002 0.000 0.000 0.000 0.009 0.042 0.000 0.000 0.000 0.000 0.009 0.005 0.013 0.013 0.099

,0.023 0.006 0.014 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.037 0.026 0.000

0. 107 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 F 000 0.000 0.018 0.009 0.000 0.026 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 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 0.023 0.013

0. 017 0.000 0.000 0.005 0.022 0.059 0.002 0.007 0.000 0 F 000 0.011 0.060

. 0.048 0.013 0.280 TOTAL HOURS OF VALID OBSERVATIONS TOTAL HOURS OF GROUND LEVEL RELEASE TOTAL HOURS OF STABILITY CLASS C

TOTAL HOURS OF GROUND LEVEI STABILITY CLASS C

2190;000 227.960 12.670 6.140 METEOROLOGICAL FACILITY:

BROWNS FERRY NUCLEAR PLANT STABZLITY BASED ON DELTA-T BETWEEN 10 '3 AND 45.30 METERS WIND DIRECTION MEASURED AT 10.42 METER LEVEL WIND SPEED MEASURED AT '0.42 METER LEVEL EFFLUENT VELOCITY ~ 12.60 M/S DATE PRINTED: 24-JAN-94 NOTE:

TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS El-39

SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DZRECTZON POR STABILITY CLASS D

{-1.5< DELTA T<~-0.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 1

OF 2

GROUND LEVEL RELEASE MODE OCT 1,

93 DEC 31, 93 WIND DIRECTION CALM 0.6-1.4 1.5-3.4 WIND SPEEDtMPH) 3.5-5.4 5.5-7.4

7. 5-12. 4

12. 5-18. 4

18. 5-24. 4

>a24.5 TOTAL N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW SUBTOTAL 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 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 0.007 0.029 0.098 0.086 0.003 0.016 0.002 0.000 0.000 0.000 0.000 0.241 0.017 0.021 0.010 0.007 0.045 0.091 0.019 0.131 0.076 0.071 0.067 0.033 0.022 0;000 0.009 0.017 0.638 0.065 0.032 0.015 0.004 0.000 0.095 0.106 0.055 0.016 0.000 0.008 0.058 0.028 0.036 0.027 0.061 0.606 0.261 0.058 0.011 0.000 0.000 0.021 0.022 0.000 0.000 0.000 0.000 0.067 0.064 0.256 0.342 0.458 1.561 0.089 0.105 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000

0. 160

0. 400 0.159 0.913 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 0.073 0.202 0.000 0.274 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 0.433 0.216 0.036 0.011 0.045 0.213 0.176 0.284 0.179 0.074 0.090 0.160

0. 115 0.525 0.979 0.695 4.232 I

TOTAL HOURS OP VALID OBSERVATIONS TOTAL HOURS OF GROVND LEVEL RELEASE TOTAL HOURS OF STABZLITY CLASS D

TOTAL HOURS OP GROUND LEVEL STABILITY CLASS D

2190.000 227.960 1163.120 92.690 METEOROLOGICAL FACILITY:

BROWNS PERRY NVCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND DZRECTION NEASVRED AT 10.42 METER LEVEL WIND SPEED NEASURED AT 10.42 METER LEVEL EFFLUENT VELOCZTY I 12.60 M/S DATE PRINTED: 24-JAN-94 NOTE:

TOTALS AND SVBTOTALS ARE OBTAINED PROM UNROVNDED NUMBERS E1-40

SPLZT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABII.ITY CLASS E

{-0.5< DELTA T<ii 1.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 1

OF 2

GROUND LEVEL RELEASE HODE OCT 1,

93 DEC 31, 93 WIND DIRECTION CALM 0.6-1.4 1.5-3.4 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 N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW 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 0.000 0.000 0.000 0.004 0.005 0.004 0.004 0.000 0.000 0.000 0.000 0.000 0.016 0.002 0.002 0.000 0.002 0.030 0.107 0.196 0.096 O.O48 0.004 0.017 0.001 0.004 0.004 0.005 0.043 0.026 0.006 0.012 0.104 0.153 0.141 0.182 0.160 0.045 0.029 0.031 0.021 0.008 0.000 0.067 0.005 0.053 0.005 0.000 0.006 0.108 0.053 0.091 0.348 0.000 0.008 0.000 0.011 0.016 0.000 0.054 0.059 0.007 0.000 0.000 0.000 0.026 0.009 0.010 0.116 0.000 0.000 0.012 0.040 0.008 0.071 0.165 0.036 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 0.059 0.026 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 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.159 0.089 0.014 0.012 0.112 0.316 0.310 0.483 0.726 0.097 0.044 0.059 0.074 0.035 0.134 0.316 SUBTOTAL 0.000 0.017 0.534 1.027 0.758 0.523 0.121 0.000 0.000 2.980 TOTAL HOURS OF VALID OBSERVATIONS TOTAL BOURS OF GROUND LEVEL RELEASE TOTAL HOURS OF STABILITY CLASS E

TOTAL HOURS OF GROUND LEVEL STABILITY CLASS E

2190.000 227.960 726.060 65.260 METEOROLOGICAL FACILITY:

BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND DIRECTION HEASURED AT 10 42 HETER LEVEZ WIND SPEED MEASURED AT 10.42 HETER LEVEL EFFLUENT VELOCITY I 12.60 H/S DATE PRINTED: 24-JAN-94 NOTE:

TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS El-41

SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DZRECTZON FOR STABILITY CLASS F

( 1.5<

DELTA T<~ 4.0 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 1

OF 2

GROUND LEVEL RELEASE MODE OCT 1,

93 DEC 31, 93 WIND DIRECTION CALM 0.6-1.4 1.5-3.4 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 N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW-W WNW NW NNW 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 0.005 0.002 0.000 0.000 0.026 0.022 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.002 0.026 0.022 0.000 0.013 0.040 0.047 0.097 0.113 0.058 0.007 0.000 0.000 0.000 0.000 0.003 0.014 0.039 0.042 0.000 0.006 0.052 0.023

0. 051 0.070 0.073 0.015 0.000 0.000 0.000 0.000 0.006 0.012 0.007 0.066 0.000 0.000 0.000 0.000 0.000 0.055 0.273 0.000 0.000 0.000 0.000 0.000 0.000 0.029 0.000 0.009 0.000 0.000 0.000 0.000 0.000 0.046 0.086 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 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 o.noo 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 0.073 0.140

0. 005.

0. 021 0.092 0.070 0.174 0.307 0.490 0.022 0.000 0.000 0.000 0.000 0.009 0.058 SUBTOTAL 0.000 0.057 0.442 0.390 0.431 0.141 0.000

, 0.000 0.000 1.460 TOTAL HOURS OF VALID OBSERVATIONS TOTAL HOURS OF GROUND LEVEL RELEASE TOTAL HOURS OF STABILITY CLASS F

TOTAL HOURS OF GROUND LEVEL STABILITY CLASS F

2190.000 227.960 196.670 31.980 METEOROLOGICAL FACIIITY:

BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DEITA-T BETWEEN 10.03 AND 45.30 METERS WIND DIRECTZON MEASURED AT

10. 42 METER LEVEL WIND SPEED MEASURED AT 10.42 METER LEVEL EFFLUENT VELOCITY ~ 12.60 H/S DATE PRINTED: 24-JAN-94 NOTE:

TOTALS AND SUBTOTALS ARE OBTAZNED FROM UNROUNDED NUMBERS El-42

SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION POR STABZLITY CLASS G

(DELTA T

> 4.0 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 1

OF 2

GROUND LEVEL RELEASE MODE OCT 1,

93 DEC 31, 93 WIND DIRECTION CALM 0.6-1.4 1.5-3.4 WIND SPEED(MPH) 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4

>s24.5 TOTAL N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW 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 0.000 0.000 0.025 0.032 0.006 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.032 0.038 0.052 0.014 0.012 0.014 0.013 0.208 0.028 0.000 0.000 0.000 0.000 0.000 0.000 0.003 0.024 0.065 0.006 0.005 0.005 0.000 0.000 0.051 0.030 0.000 0.000 0.000 0.000 0.000 0.000 0.004 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 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 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 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 0.057 0.103 0.058 0.019

0. 017 0.014 0.038 0.290 0.064 0.000 0.000 0.000 0.000 0.000 0.000 0.007 SUBTOTAL 0.000 0.063 0.414 0.189 0.000 0.000 0.000 0.000 0.000 0.666 TOTAL HOURS OF VAIID OBSERVATIONS TOTAL HOURS OP GROUND LEVEL RELEASE TOTAL HOURS OP STABILITY CLASS G

TOTAL HOURS OF GROUND LEVEL STABZIZTY CIASS G

2190.000 227.960

71. 360 14.590 METEOROLOGICAL PACZLITY:

BROWNS PERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AHD 45.30 METERS WIND DIRECTION MEASURED AT 10.42 NETER LEVEL WIND SPEED NEASURED AT 10.42 METER LEVEL EPPLUENT VELOCITY 12.60 N/S DATE PRINTED: 24-JAN-94 NOTE TOTALS AND SUBTOTALS ARE OBTAINED FRON UNROUNDED NUMBERS El-43

Radiological Impact Assessment Browns Ferry Nuclear Plant July - December 1993 Table 10 Joint Frequency Distribution in Percent for Split Level Releases Elevated Level Portion Third Quarter El-44

SPLIT JOINT PERCENTAGE FREQUENCIES OP WIND SPEED BY WIND DIRECTZON POR STABILITY CLASS A

(DELTA T<~-1.9 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 2

OF 2 ELEVATED RELEASE MODE JUL 1

~

93 SEP 3Q 3 93 WIND DIRECTION CALM

0. 6-1. 4 1.5-3.4 WIND SPEED(MPH) 3.5-5.4 5.5-'l.4 7 ~ 5-12

~ 4 12

~ 5-18

~ 4 18 5 4

>3I24. 5 TOTAL N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW 0.000 0.000 a.ooo 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 O.OOD 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 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 O.QOO 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 a.ooo 0.000 0.000 0.000 0.000 0.000 o.oao 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 0.000 0.000 0.000 0.000 0.000 0.000 O.OQO 0.000 0.000 0.000 0.000 O.oaa 0.000 0.000 0.000 0.000 0.000 o.ooa 0.000 0.000 0.000 0.000 a.aao 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 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0 ~ 000 0.000 O.aaa 0.000 O.OQO 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 o.aao 0.000 0.000 0.000 0.000 0.000 SUBTOTAL 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 TOTAL HOURS OF VALID OBSERVATIONS TOTAL HOURS OP ELEVATED RELEASES TOTAL HOURS OF STABILITY CLASS A

'TOTAL HOURS OP ELEVATED STABILITY CLASS A 2036.000 1942.300 13.040 0.000 METEOROLOGICAL PACILITY:

BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 45.30 AND 89.59 METERS WIND DIRECTION MEASURED AT 45.67 METER LEVEL WIND SPEED MEASURED AT 45.67 METER LEVEL EPPLUENT VELOCITY ~ 12.60 M/S DATE PRIHTED: 21-OCT-93 NOTE.

TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS El-.45

SPLIT JOINT PERCENTAGE FREQUENCIES OP WIND SPEED BY WZND DIRECTION POR STABILITY CLASS B

(-1.9<

DELTA T<~ 1.7 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 2

OF 2

ELEVATED RELEASE NODE JVL 1,

93 - SEP 30, 93 WIND DZRECTZON CALM 0.6-1.4 3.3-3.4 WIND SPEED(MPH) 3.5-5.4 5.5-7.4

'7.5-12.4 12.5-18.4 18.5-24.4 TOTAL N

NNE NE ENE E

ESE SE SSE S

S S'W SW WSW W

WNW NW NNW 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 Q.OOQ 0.000 0.000 0.

000'.000 0.000 0.000 O.DOO O.OQO 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 Q.QOO 0.000 0.000 O.OOD o.oaa 0.000 0.000 0.000 a.ooo 0.000 0.000 0.000 0.000 0.000 0.000 0.000 a.ooo 0.000 0.000 0.000 a.ooo 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 0.046 0.000 0.000 0.000 0.000 O.OOQ 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 o.oao 0.000 0.000 0.000 0.000 0.000 0.000 0.000 O.OQO 0.000 0.000 0.000 0.000 0.000 0.000 O.ODO 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 O.DOO 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 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 O.OQO 0.000 0.046 0.000 O.QOO 0.000 0.000 0.000 SVBTOTAL 0.000 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.046 TOTAL HOURS OF VALID OBSERVATIONS TOTAL HOURS OF ELEVATED RELEASES TOTAL HOURS OF STABILITY CLASS B

TOTAL HOURS OF ELEVATED STABILITY CZASS B

2036.000 1942.300 6.640 0.930 METEOROLOGICAL FACILITY:

BROWNS PERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 45.30 AND 89.59 METERS WIND DIRECTION MEASURED AT 45.67 METER LEVEL WIND SPEED MEASURED AT 45.67 METER LEVEL EFPLUENT VELOCITY ~ 12. 60 M/S DATE PRINTED: 21-OCT-93 NOTE'OTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS El-46

SPI IT JOINT PERCENTAGE FREQUENCIES OP WIND SPEED BY WIND DIRECTION POR STABILITY CLASS C

(-1.7<

DELTA T<22-1.5 C/100 Ml BROMNS FERRY NUCLEAR PLANT PART 2

OP 2

ELEVATED RELEASE MODE JUL 1,

93 - SEP 30, 93 WIND DIRECTION CALM 6.6-1.4 1.5-3.4 WIND SPEED(MPH) 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4 24.6 TOTAI N

NNE NE EHE E

ESE

~ SE SSE S

SSM SW WSW W

WHW HM tittW SUBTOTAL 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 O.OOD 0.000 0.000 0.000 o.aoo 0.000 0.000 0.000 0.000 D.DQD 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 o.aoa 0.000 0.000 0.000 0.000 O.ooa 0.000 0.000 0.000 0.000 0.00Q 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.098 0.049 0.000 0.000 0.000 0.000 0.147 O.ODO 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 O.O47 0.000 0.000 0.049 0.000 0.000 0.000 0.096 0.000 o.aoa 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.044 0.179 0.000 0.000 0.000 0.000 0.000 0.222 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 a.aoo 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 0.000 0.000 0.000 0.000 O.aao 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 0.000 0.000 0.000 0.091 0.277 0.049 0.049 0.000 0.000 0.000 0.466 TOTAL HOURS OF VALID OBSERVATIONS TOTAL HOURS OP ELEVATED RELEASES TOTAL t(OURS OF STABILITY CLASS C

TOTAL HOURS OF ELEVATED STABILITY CLASS C

2036.000 1942.300 15.190 9.480 METEOROLOGICAL PACILITY:

BROWNS PERRY NUCLEAR PLANT STABILITY BASED OH DELTA-T BETWEEN

45. 30 AND

89. 59 METERS WIND DZRECTZON MEASURED AT 45.67 METER LEVEL WIND SPEED MEASURED AT 45.67 METER LEVEL EFPLUEHT VELOCZTY ~ 12.60 M/S DATE PRINTED: 21-OCT-93 NOTE:

TOTALS AND.SUBTOTAIS ARE OBTAINED PROM UNROUNDED NUMBERS

~

SPLZT JOINT PERCENTAGE FREQUENCIES OP WIND SPEED BY WIND DIRECTION POR STABILITY CLASS D

(-1. 5<

DELTA T<=-0. 5 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 2

OP 2

ELEVATED RELEASE MODE JVL 1,

93 SEP 30, 93 WIND DIRECTION CALM 0.6-1.4 1.5-3 '

WIND SPEED(MPH) 5.5-5.4 5.5-7 '

7.5-12 '

12.5-18.4 18.5-24.4 74.5 TOTAL N

NNE NE ENE E

ESE SE SSE S

S S'W SW WSW W

WNW NW NNW SUBTOTAL 0.003 0.003 0.002 0.001 0.002 0.002 0.014 0.016 0.013 0.012

~

0.010 0.005 o.oa6 0.003 0.003 0.003 0.098 0.000 0.000 a.ooo 0.049 0.098 0;000 0.000 0.098 0.000 0.147 0.098 0.000 0.098 0.000 0.049 0.049 0.688 0.344 0.344 0.196 0.049 0.098 0.295 1.768 1.866 1.670 1.375 1.179 0.639 0.688 0.393 0.344 0.344 11.591

0. 491 0.393 o.s4o 0.196 0.246 0.295 1.130 1.768 1.375 1.621 1.621 1.670 1.670 0.688 0.737 0.442

14. 882 0.994 O.BS4 0.281 0.284 0.048 0.144 0.478 0.382 0.751 0.526 0.523 1.289 1.756 1.081 0.515 O.&04

10. 710 0.954 0.435 0.130 0.088 0.000 0.133 0.305 1.552 2.154 0.746 1.041 0.529

1. 005 1.304 1.735 0.815 12.925 0.040 0.039 0.000 0.000 0.000 0.000 0.081 1.0'79 0.680 0.080 0.0&1 0.000 O.D40 0.160 0.400 0.161 2.842 0.019 0.050 D.aaa 0.000 0.000 a.ooo 0.000 0.074 0.196 0.039 a.ooo 0.000 0.000 0.000 0.016 0.000 0.393 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.012 0.000 0.000 0.000 0.000 0.000 0.000 O.ooa

0. 012 2.846 2.117 1 ~ 149 0.668 0.491 0.869 3.776 6.834 6.851 4.546 4.552 4.131 5.264 3.629 3.799 2.618 S4.141 TOTAI HOURS OP VALID OBSERVATIONS TOTAL HOVRS OF ELEVATED REZ EASES TOTAL HOVRS OP STABILITY CLASS D

TOTAL HOURS OF ELEVATED STABZLZTY ClASS D

2036.000 1942.300 1136.070 1102.310 METEOROLOGICAL FACILITY:

BROWNS PERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 45-30 AND 89 ~ 59 METERS WIND DIRECTION MEASURED AT 45 ~ 67 METER LEVEL WIND SPEED MEASURED AT 45.67 METER LEVEL EFFZUENT VELOCITY ~ 12.60 M/S DATE PRINTED: 21-OCT-93 NOTE:

TOTALS AND SUBTOTALS ARE OBTAINED PROM UNROUNDED NUMBERS El-48

SPLIT JOZNT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS E

{-0.5< DELTA T<= 1.5 C/100 M)

BROWNS PERRY NUCLEAR PLANT PART 2

OF 2

ELEVATED RELEASE MODE JUL 1,

93 SEP 30, 93 WIND DIRECTION CALM 0.6-1.4 1.5-3.4 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 N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW trNw SUBTOTAL 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 o.ooo 0.000 0.000 0.000 0.000 0.147 0.049 0.049 0.000 0.049 0.000 0.098 0.000 0.098 0.196 0.147 0.098 0.049 0.049 0.000 0.049 1.081 0.442 0.540 0.295 0.491 0.491 0.737 0.835 1.375 0.933 0.835 0.737 0.786 0.295 0.098 0.442 0.344 9.676 0.540 0.246 0.246 0.295 0.589 0.737 0.835 0.639 0.639 1.179

1. 179 0.589 0.540 0.393 0.344 0.393 9.381 0.620 0.326 0.516 0.190 0.141 0.284 0.571 0.332 0.048 0.528 0.335 0.144 0.420 0.329 0.287 0.467 5.539 0.705 0.394 0.087 0 '91 0.219 0.000 o.o44 0.1'77 0.341 0.353 0.041 0.000 0.175 0.045 0.304 0.702 3.677 0.162 0.000 0.080 0.000 0.000 0.000 0.000 0.320 0.200 0.040 0.000 0.040 0.041 0.000 0.000 0.081 0.964 0.000 0.000 0.000 0 000 0.000 0.000 0.000 0.039 0.027 0.037 0.000 0.000 0.000 0.000 0.037 o.ooo 0.140 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 2.616 1.556 1.272 1.067 1 490

1. 758 2.383 2.881 2.285 3*169 2.440 1.658 1.520 0.914 1.414 2.036 30.457 TOTAL HOURS OF VArID OBSERVATZONS TOTAL HOURS OF ELEVATED RELEASES TOTAL HOURS OF STABILITY CLASS E

TOTAr. HOURs OF Er.EVATFD STABILITY Cr.Ass F.

2036.000 1942.300 637.690 620.100 METEORDLOOICAI FACILITY:

BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DEZTA-T BETWEEN 45.30 AND 89.59 METERS WZND DZRECTION MEASURED AT 45.67 METER LEVEL WIND SPEED MEASURED AT 45.67 METER LEVEL EFFLUENT VELOCITY 12.60 M/S DATE PRINTED: 21-OCT-93 NOTE TOTALS AND SUBTOTALS ARE OBTAZNED FROM UNROUNDED NUMBERS EC-49

SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DZRECTZON FOR STABZLZTY CLASS F

( 1.5<

DELTA T<~ 4.0 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 2

OF 2

ELEVATED RELEASE MODE JUL 1 I 93 SEP 30

~

93 WIND DIRECTION CALM 0.6-1.4 1.5-3.4 WIND SPEED(MPH) 3.5-5.4 5.5-7.4

'7 12

~ 4 12. 5-18

~ 4 18 ~ 5-2 4 - 4

>~24.5 TOTAL N

NNE NE ENE E

ESE SE SSE S

SEW SW WSW W

WNW NW NNW 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 Q.aoa 0.000 0.000 0.000 0.000 Q.QQQ 0.000 0.000 0.000 0.049 0.049 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0 ~ 000 0.147

0. 147 0.000 0.049 0.000 0.000 0.098 0.049 0.098

0. 196 0.098 0.000 0.049 0.000 0.049 0.049 0.196 0.246 0.000 0.098 0.147 0.196 0.098 0.000 0.344 0.196

'0. 147 0.049 o.aoo 0.049 0.049 0.236 0.048 0.335 0.335 0.239 0.286 0.095 0.238 0.094 0.000 0.000 0.095 0.000 0.000 0.000 0.096 0.429 0.824 0.434 0.174

0. 133 0.000 0.089 0.000 0.000 0.044 a.044 0.000 0.000'.000 0.000 0.044 0.041 0.081 0.041 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 Q.aoa 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 a.aao 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.755 1.297 1.203 0.509 0.519 0.433 0.430 0.483 0.143 0.486 0.437 0.341 0.049 0.049 0.049 0.238 SUBTOTAL Q.QQQ 0.098 0.982 1.866 2.097 2.215 0.163 0.000 0.000 7.421 TOTAL HOURS OF VALID OBSERVATIONS TOTAL HOURS OF ELEVATED RELEASES TOTAL HOURS OF STABILITY CLASS F

TOTAL HOURS OF ELEVATED STABZLITY CLASS F

2036.000 1942.300 158.800 151. 100 METEOROLOGICAL FACILITY BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 45.30 AND S9-59 METERS WIND DIRECTION MEASURED AT 45.67 METER LEVEZ WIND SPEED MEASURED AT 45.67 METER LEVEL EFFLUENT VELOCITY ~ 12.60 M/S DATE PRINTED: 21-OCT-93 NOTE:

TOTALS AND SUBTOTALS ARE OBTAZNED FROM UNROUNDED NUMBERS E1-50

SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION fOR STABILITY CLASS G

(DELTA T

> 4.0 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 2 Of 2

ELEVATED RELEASE MODE JUL 1,

93 - SEP 30'3 WIND DIRECTION CALM 0.6-1.4 1.5-3.4 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 N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW SUBTOTAL 0.000 a.oao 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 a.oao 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 0.000 0.000 0.000 0.000 0.000 0.049 0.098 0.000, O.OQO 0.000 0.000 0.000 0.000 0.000 O.QOO 0.000 0.147 0.000 0.147 0.196 0.000 0.000 0.000 0.098 0.049 0.000 0.000 0.000 0.000 0.000 0.000 a.ooo 0.000 0.491 0.145 0.426 0.144 0.000 0.000 0.094 0.096 0.094 0.000 0.000 0.000 0 ~ 000 0.000 0.000 0.000 O.QQQ 0.999

0. 261 0.295 0.304 o.ooa 0.000 0.000 0.044 0.000 0.000 o.aao 0.000 0.000 0.000 0.000 0.000 0.000 0.904 O.O82 0.244 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 0.326 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0 ~ 000 O.QQO 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 0.000 a.ooo 0.000 0.488

1. 112 0.644 0.000 0.000 0.143 0.336 0.143 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 2.867 TOTAL HOURS OF VALZD OBSERVATIONS TOTAL HOURS OF ELEVATED RELEASES TOTAL HOURS OF STABILITY CLASS G

TOTAL HOURS OF ELEVATED STABILITY CLASS G

2036.000 1942.300 68.570 58.380 METEOROLOGICAL FACILITY:

BROWNS FERRY NUCLEAR PLANT STABZLITY BASED ON DELTA-T BETWEEN 45.30 AND 89.59 METERS WIND DIRECTION MEASURED AT 45 67 METER LEVEL WIND SPEED MEASURED AT 45 ~ 67 METER LEVEL EFFLUEHT VELOCITY ~ 12.60 M/S DATE PRINTED: 21-OCT-93 NOTE.

TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS

Radiological impact Assessment Browns Ferry Nuclear Plant July - December 1993 Table 11 Joint Frequency Distribution in Percent for Split Level Releases Elevated Level Portion Fourth Quarter El-52

SPLIT JOINT PERCENTAOE FREQUENCIES OF WIND SPEED BY WIND DIRECTZON FOR STABILITY CLASS A

{DELTA T<~-1.9 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 2

OF 2

ELEVATED RELEASE MODE OCT 1,

93 DEC 31, 93 WIND DIRECTION CALM 0.6-1.4 1.5-3.4 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 N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW SUBTOTAL 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 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 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 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 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 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 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

F 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 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 TOTAL HOURS OF VALID OBSERVATIONS TOTAL HOURS OF ELEVATED REI EASES TOTAL HOURS OF STABILITY CLASS A TOTAL HOURS OF ELEVATED STABILITY CLASS A 2190.000 1962.040 11.340 0.000 METEOROLOGICAL FACILITY:

BROWNS FERRY NUCLEAR PLANT STABZLZTY BASED ON DELTA-T BETWEEN 45 '0 AND 89.59 METERS WIND DIRECTION MEASURED AT 45 67 METER LEVEL WIND SPEED MEASURED AT 45.67 METER LEVEL EFFLUENT VELOCITY m 12.60 M/S DATE PRINTED: 24-JAN-94 NOTE:

TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS El-53

SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DZRECTION FOR STABILITY CI ASS B

t-1.9<

DELTA T<~-1.7 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 2

OF 2

ELEVATED RELEASE MODE OCT 1,

93 DEC 31, 93 WIND DIRECTION CALM 0.6-1.4 1.5-3.4 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 TOTAI N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW 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 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 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 0.046 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 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.041 0.042 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 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 o.ooo 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0 F 000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.041 0.088 0.000 0.000 0.000 0.000 0.000 SUBTOTAL 0.000 0.000 0.000 0.046 0.000 0.083 0.000 0.000 0.000 0.129 TOTAL HOURS OF VALID'OBSERVATIONS TOTAL HOURS OF ELEVATED RELEASES TOTAL HOURS OF STABILITY CLASS B

TOTAL.HOURS OF EI EVATED STABILITY CLASS B

2190.000 1962.040 8.780 2.820 METEOROLOGICAL FACILITY:

BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 45.30 AND 89.59 METERS WIND DZRECTZON MEASURED AT 45'7 METER LEVEL WIND SPEED MEASURED AT 45.67 METER LEVEL EFFLUEHT VEIOCITY ~ 12.60 M/S DATE PRINTED: 24-JAN-94 NOTE:

TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUHBERS El-54

SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS C

(-1.7<

DELTA T<~-1.5 C/100 M)

BROWNS FERRY NUCLEAR PIANT PART 2

OF 2

ELEVATED RELEASE MODE OCT 1,

93 DEC 31, 93 WIND DZRECTZON CALM 0.6-1.4 1.5-3.4 WIND SPEED(MPN) 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4

>~24.5 TOTAL N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW tltiW SUBTOTAl 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 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 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 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.046 0.000 0.045 0.000 0.000 0.000 0.000 0.000 0.090 0.000 0.000 0.000 0.000 0.000 0.041 0.000 0.000 0.000 0.000 0.080 0.000 0.041 0.000 0.000 0.000 0.162 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 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 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 0.041 0.000 0.000 0.046 0.046 0.125 0.000 0.041 0.000 0.000 0.000 0.298 TOTAL HOURS OF VALID OBSERVATIONS TOTAL HOURS OF ELEVATED RELEASES TOTAL HOURS OF STABILITY CLASS C

TOTAL HOURS OF ELEVATED STABZLZTY CLASS C

2190.000 1962.040 12.670 6.530 METEOROLOGICAL FACILITY:

BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 45 30 AND 89.59 METERS WIND DIRECTION HEASURED AT

45. 67 HETER LEVEL WIND SPEED HEASURED AT 45.67 METER LEVEL EFFLUENT VELOCITY ~ 12. 60 H/S DATE PRINTED: 24-JAN-94 NOTE:

TOTALS AND SUBTOTALS ARE OBTAZNED FROM UNROUNDED NUHBERS

SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS D

(-1.5<

DEZTA T<=-0.5 C/100 M)

BROWNS FERRY NVCZEAR PLANT PART 2

OF 2

EZEVATED RELEASE MODE OCT 1,

93 DEC 31, 93 WIND DIRECTION CALM 0.6-1.4 1.5-3.4 WIND SPEED(MPH) 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4 TOTAL N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW SUBTOTAL 0.002 0.002 0.002 0.001 0.002 0.003 0.010 0.005 0.004 0.004 0.003 0.002 0.001 0.001 0.001 0.002 0.046 0.046 0.046 0.046 0.046 0.000 0.000 0.046 0.046 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.320 0.183 0.183 0.183 0.091 0.183 0.274 1.050 0.502 0.365 0.411 0.365 0.228 0.091 0.137 0.137 0.183 4.566 0.183 0.457 0.594 0.411 0.183 0.548 1.370 0.776 0.731 0.411

0. 411 0.548 0.228 0.502 0.411 0.411 8.174 0.707 0.662 0.488 0.268 0.217 0.435 0.439 0.528 0.622 0.439 0.352 0.357 0.443 0.263 0.574 0.438 7.233 1.316 1.234 0.243 0.042 0.164 1.169 1.230 1.348 0.884 0.836 0.878 0.521 0.807 0.792 1.747 1.593

14. 803 1.342 0.300 0.038 0.000 0.000 0.074 1.263 1.228 0.668 0.485

0. 33'7 0.373 0 '25 1.346 1.963

1. 856 11.800 0.174 0.026 0.000 0.000 0 ~ 000 0.025 0.085 0.056 0 '63 0.101 0.000 0 F 000 0.185 0.099 0.459 0.197 1.869 0.000 0.015 0.000 0.000 0.000 0.000 0.004 0.000 0.020 0.000 0.000 0.000 0.000 0.005 0.015 0.010 0.068 3.952 2.925 1.593 0.859 0.749 2.527 5.496 4.489 3.802 2.687 2.346 2.029 2 F 281 3.146 5.308 4.689 48.878 TOTAL HOURS OF VALID OBSERVATIONS TOTAL HOVRS OF ELEVATED RELEASCS TOTAL HOURS OF STABILITY CLASS D

TOTAL HOURS OF ELEVATED STABILITY CLASS D

2190.000 1962.040 1163. 120 1070.430 METEOROLOGICAL FACILITY:

BROWNS PERRY NUCLEAR PLANT STABILITY BASCD ON DCLTA-T BETWEEN 45

~ 30 AND 89.59 METERS WIND DIRECTION MEASURED AT

45. 67 METER LEVEL WIND SPEED MEASVRED AT 45.67 METER LEVEl EFFLUCNT VELOCITY m 12.60 M/S DATE PRINTED: 24-JAN-94 NOTE:

TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBCRS El-56

SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS E

(-0.5<

DELTA T<~ 1.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 2

OF 2

ELEVATED RELEASE MODE OCT 1,

93 DEC 31, 93 WIND DIRECTION CALM 0.6-1.4 1.5-3.4 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 N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW SUBTOTAL 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 0.091 0.000 0.046 0.000 0.000 0.046 0.000 0.000 0.000 0.046 0.091 0.000 0.000 0.000 0.046 0.000 0.365 0.091 0.091 0.183 0.000 0.274 0.411 0.365 0.274 0.320 0.274 0.228 0.137 0.091 0.091 0.091 0.000 2.922 0.228 0.183 0.411 0.137 0.320 1.050 1.233 0.548 0.274 0.411 0.183 0.320 0.457 0.137 0.228 0.046 6.164 0.354 0.835 0.354 0.135 0.403 0.923 1.109

0. 661 0.309 0.264 0.222 0.305 0.087 0.042 0.258 0.396 6.658 0.770 0.723 0.328 0.080 0.360 1.730 1.655 1.684 0.827 0.279 0.484 0.245 0.165

= 0.121 0.193 0.673

10. 319 0.037 0.076 0.038 0.000 0.000 0.075 0.334 1.191 0.446 0.188 0.113 0.037 0.000 0.037 0.074 0.225 2.872 0.000 0.000 0.000 0.000 0.000 0.000 0.062 0.447 0.235 0.000 0.034 0.000 0.000 0.000 0.089 0.000 0.866 0.000 0.000 0.000 0.000 0;000 0.000 0.000 0.000 0.007 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.007

1.572 1.907 1.360 0.352 1.357 4.236 4.758 4.805 2.418 1.461 1.355 1.044 0.800 0.429 0 '79 1.340 30.174 TOTAL HOURS OF VALZD OBSERVATIONS TOTAL HOURS OF ELEVATED RELEASES

'OTAL HOURS OF STABILITY CLASS E

TOTAL HOURS OF ELEVATED STABILZTY CLASS E

2190.000 1962.040 726.060 660.800 METEOROLOGICAL FACILITY:

DROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 45

~ 30 AND 89

~ 59 METERS WIND DIRECTION MEASURED AT

45. 67 METER LEVEL WIND SPEED MEASURED AT 45.67 METER IEVEL EFFLUENT VELOCITY 12.60 M/S DATE PRINTED: 24-JAN-94 NOTE:

TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E1-57

SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION POR STABILITY CLASS F

{ 1.5<

DELTA T<~ 4.0 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 2

OF 2

ELEVATED RELEASE MODE OCT 1,

93 DEC 31, 93 WIND DIRECTION CALM 0.6-1.4 1.5-3.4 WIND SPEED(MPH) 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4

>a24.5 TOTAL N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW 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 0.046 0.000 0.000 0.000 0.091 0.000 0.046 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.046 0.000 0.046 0.091 0.183 0.365 0.137 0.091 0.091 0.046 0.046 0.046 0.046 0.000 0.000 0.137 0.046 0.183 0.228 0.091

0. 594

0. 594 0.091 0.137 0.000 0.091 0.000 0.046 0.046 0.000 0.137 0.046 0.000 0.089 0.129 0.179 0.353 0.309 0.224 0.000 0.044 0.045 0.000 0.000 0.000 0.086 0.133 0.164

0. 078 0.164 0.162

0. 411 0.162 0.125 0.360 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.040 0.000 0.299 0.037 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 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 0.000 0.000 0.000 0.000 0.000 0.347 0.468 0.519 0.565 0.772

1. 291 1.484 0.812 0.274 0.136 0.228 0.046 0.091 0.091 0.086 0.310 SUBTOTAL 0.000 0.228 1.233 2.420 1.638 1.665 0.336 0.000

0. 000 7.520 TOTAL HOURS OF VALID OBSERVATIONS TOTAL HOURS OF ELEVATED RELEASES TOTAL HOURS OF STABILITY CLASS F

TOTAL HOURS OF ELEVATED STABILITY ClASS F

2190.000 1962.040 196.670 164.690 METEOROLOGICAL FACILZTY:

BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DEITA-T BETWEEN 45.30 AND 89.59 METERS WIND DIRECTION MEASURED AT 45.67 METER LEVEL WIND SPEED MEASURED AT 45.67 METER LEVEL EFFLUENT VELOCITY ~ 12.60 M/S DATE PRINTED: 24-JAN-94 NOTE:

TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E1-58

SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DZRECTZON FOR STABILITY CLASS G

(DELTA T

> 4.0 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 2

OF 2

ELEVATED RELEASE MODE OCT 1,

93 DEC 31, 93 WIND DIRECTION CALM 0.6-1.4 1.5-3.4 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 TOTAI N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW 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 0.000 0.000 0.000 0.046 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.183 0.091 0.137 0.046 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.046 0.000 0.000 0.091 0.457 0.091 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.086 0.000 0.085 0.000 0.441 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.040 0". 040 0.121 0.160 0.041 0.000 0.123 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.038 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 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 0.000 0.000 0.000 0.000 0.000 0.000 0.040 0.078 0.299 0.160 0.126 0.091 1.204 0.274 0.183 0.046 0.046 0.046 0.000 0.000 0.000 0.000 SUBTOTAL 0.000 0.091 0.548 0.731 0.658 0.526 0.038 0.000 0.000 2.592 TOTAL HOURS OF VALID OBSERVATIONS TOTAL HOURS OF ELEVATED RELEASES TOTAL HOURS OF STABILITY CLASS G

TOTAL HOURS OF ELEVATED STABILITY CLASS G

2190.000 1962.040 71.360 56.770 METEOROLOGICAL FACIIZTY:

DROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 45.30 AND 89.59 METERS WIND DIRECTZON MEASURED AT 45.67 METER LEVEL WIND SPEED MEASURED AT 45.67 METER LEVEL EFFLUENT VELOCITY ~ 12.60 M/S DATE PRINTED: 24-JAN-94 NOTE:

TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E1-59

Radiological impact Assessment Browns Ferry Nuclear Plant July - December 1993 Table 12 Joint Frequency Distribution in Percent for Stack Releases Third Quarter E1-60

JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIHD DIRECTION FOR STABIZITY CLASS A

(DELTA T<~-1.9 C/100 M)

BROWNS FERRY NUCLEAR PLANT JUL 1 ~

93 SEP 30i 93 WIND DIRECTION CALM 0.6-1.4 1.5-3.4 WIND SPEED1MPH) 3.5-5.4 5.5-'l.4 7.5-12.4 12.5-18.4 18.5-24.4

>%$24. 5 TOTAL N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW SUBTOTAZ 0.000 0.000 0.000 0.000 0.000 0.000 Q.QDQ 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 Q.aoa 0.000 0.000 0.000 0.000 0 ~ 000 0.000 0.000 o.aoa 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 Q.aaa 0.000 D.DQQ 0.000 0.000 0.000 0.000 D.DDD 0.000 a.aao 0.000 0.000 0.000 0.000 0.000 0.000 0.000 o.aao 0.000 D.DQQ 0.000 0.000 0.000 0.006 0.000 0.000 0.000 Q.QDQ 0.006 0.000 0.000 0.006 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 D.aaa 0.000 o.aao 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 o.ooa 0.000 0.000 0.000 0.000 0.000 0.000 0.000 o.ooa 0.000 0.000 0.000 0.000 0.000 0.000 0.000 D.QDD 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 a.aoo 0.000 0.060 0.000 0.000 0.000 0.000 o.aoo a.ooo 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 D.QDQ 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 TOTAL HOURS OF VALID STABILITY OBSERVATIONS TOTAL HOURS OF STABILITY CLASS A TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABIZZTY CLASS A

TOTAL HOURS OF VALID WZND DIRECTION-WIND SPEED-STABZIITY OBSERVATIONS TOTAL HOURS CALM 2128 0

0 2113 0

METEOROLOGICAL FACILZTY:

BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 45.30 AND 89.59 METERS WZND SPEED AND DIRECTZOH MEASURED AT 92.63 METER LEVEL DATE PRINTED: 21-OCT-93 MEAN WIND SPEED 0

00 NOTE:

TOTALS AHD SUBTOTALS ARE OBTAINED PROM UNROUNDED NUMBERS El'-61

JOZNT PERCENTAGE PREQUENCZES OF WIND SPEED BY WIND DIRECTION POR STABILITY CLASS B

(-1.9<

DELTA T<~-1.7 C/100 M)

BROWNS FERRY NUCLEAR PLANT JUL 1,

93 SEP 30, 93 WIND DIRECTION CALM 0.6-1.4 1.5-3.4 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 N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW SUBTOTAL 0.000 0.000 0.000 O.OOQ 0.000 0.000 0.000 0 ~ 000 0.000 0.000 0.000 0.000 0.000 0.000 Q.ooo 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 a.ooa 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 O.OQO 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 0.000 0.000 0.000 0.000 0.000 0.000 o.aoo 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 O.ooa 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 0.047 0.000 0.000 0.000 D.DOO 0.000 0.047 0.000 0.000 0.000 0.000 Q.OOQ 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 O.OOD O.OQO 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 O.OOQ 0.000 0.000 0.000 0.000 0.000 0.000 o.aao 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 0.047 O.DOO a.ooa 0.000 0.000 0.000 0.047 TOTAL HOVRS OF VALID STABILITY OBSERVATIONS TOTAL HOURS OF STABILITY CLASS B

TOTAL HOURS OF VALID WIND DIRECTION WIND SPEED STABILITY CLASS B

TOTAL HOVRS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS TOTAL HOURS CALM 2128 1

1 2113 0

METEOROLOGICAL FACILITY:

BROWNS PERRY NVCLEAR PLANT STABILITY BASED ON DEITA-T BETWEEN 45.30 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT 92.63 METER LEVEL DATE PRINTED: 21-OCT-93 MEAN WIND SPEED

~ 11.80 NOTE:

TOTALS AND SVBTOTALS ARE OBTAINED FROM VNROUNDED NUMBERS El-62

JOZNT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS C

[-1.7<

DELTA T<55-1.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT JUL 14 93 SEP 3Q5 93

'WIND DIRECTION CALM

5. 6-1. 4 1.5-3.4 WZND SPEED(MPH) 3.5-5.4 5.5-3.4 7.5-12.4 12.5-18 '

18.5-24 '

>>24.5 TOTAL N

NNE tiE ENE E

ESE SE SSE S

SSW SW WSW W

Wtiw NW NNW SUBTOTAL 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 a.ooo Q.QQQ 0.000 0.000 0.000 0.000 0.000 a.aoo Q.QQQ 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 a.ooo Q.QQQ 0.000 0.000 0.000 0.000 0.000 o.aoo 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 a.ooo Q.QQQ 0.000 0.000 0.000 0.000 0.000 Q.QQQ 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 a.aao 0.000 0.000 0.000 0.000 0.000 0.000 Q.ooo 0.000 0.000 0.000 0.000 0;000 0.095 0.047 0.047 0.000 0.000 Q.aoo 0.189 0.000 0.000 0.000 0.000 0.000 Q.QQQ 0.000 0.000 0.000 0.047 0.142 0.000 0.000 0.000 0.000 0.000 0.189 0.000 0.000 0.000 0.000 0.000 0.000 Q.QQQ 0.000 0.000 0.000 0.095 0.000 0.000 0.000 0.000 0.000 0.095 0.000 0.000 0.000 0.000 0.000 0.000 0.000 O.QQO 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0 F 000 0.000 0.000 0.000 0.000 0.000 o.aao Q.QQQ 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 a.ooo 0.047 0 ~ 331 0.047 0.047 0.000 0.000 0.000 0.473 TOTAL HOURS OF VALID STABILITY OBSERVATIONS TOTAL HOURS OF STABILITY CLASS C

TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS C

TOTAL HOURS OF VALID WIND DIRECTZON-WIND SPEED-STABILITY OBSERVATIONS TOTAL HOURS CALM 2128 10 10 2113 0

METEOROIOGICAL FACILITY'ROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 45.30 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT 92 ~ 63 METER LEVEL DATE PRINTED:

21-OCT 93 MEAN WIND SPEED 55 9.60 NOTE TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS El-63

JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION POR STABILITY CLASS D

(

1 5(

DELTA T<m 0 5 C/100 M)

BROWHS FERRY NUCLEAR PLANT JUL 1,

93 SEP 30, 93 WIND DIRECTION CALM 0.6-1.4 1.5-3.4 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 N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW 0.008 0.015 0.003 0 '05 0.012 0.010 0.026 0.048

0. 031 0.026 0.035 0.015 0.012 0.023 0.005 0.010

'0. 000 0.047 0.000

0. 04'7 0.047 0.047 0.000 0.047 0.000 0.095 0.237 0.000 0.000 0.047 0.000 0.000 0.237 0.379 0.095 0.095 0.284 0.237 0.757

1. 325

0. &99 0.663 0.757 0.426 0.331 0.615 0.142 0.284 0.331 0.331 0.379 0.189 0.095 0.047 1.372 1.467 0.994 0.947 1.183 1.656 1.467 0.757 0.615 0.379 0.899 0.426 0.189 0.189 0.095 0.142 0.615 0.757 0.663 0.947 0.994

~

0.994 1.893 1.278 0.663 0.379 1.514 0.805 0.284 0.331 0.047 0.095 0.426 1.325 1.514 1.704 1.041

l. 372 1.704 2.082 1.751 1.041 0 '84 0.142 0.000 0.000 0.000 0.000 0.284 1.088 1.514 0.521 0.852 0.237 0.379 0.521 0.710 0.568 0.000 0.047 0.000 0.000 0.000 0.000 0.000 0.426

0. 521 0.047 0.237 0.000 0.047 0.000 0.189 0.000 0.047 0.047 0.047 0.000 0.000 0.000 0.000 0.000 0.047 0.000 0.000 0.000 0.000 0.000 0.047 0.000 3.321 2.239 0.997 0.857 0.579 0.578 3.481 6.484 6.184 4.94S 5.335 4.700 5.833

'5.324 4.122 2.660 SUB'TOTAL 0.284 0.615 7.525 12.210 11.122

17. 037 7.099 1 ~ 514 0.237 57.643 TOTAL HOURS OF VALID STABILITY OBSERVATIONS TOTAL HOURS OF STABILZTY CLASS D

TOTAL HOURS OP VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS D

TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED STABILITY OBSERVATIONS TOTAL HOURS CALM 2128 1225 1218 2113 6

METEOROLOGICAL PACZLZTY.:

BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 45.30 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT 92.63 METER LEVEL DATE PRINTED:

21-OCT-93 MEAN WIND SPEED

~

7.83 NOTE:

TOTALS AND SUBTOTALS ARE OBTAINED PROM UNROUNDED NUMBERS El-64

JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS E

t-0. 5<

DELTA T<~ 1. 5 C/100 M)

BROWNS FERRY NUCLEAR PLANT JUL 1,

93 SEP 30, 93 MIND DIRECTION CALH 0.6-1..4 1.5 3.4 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 N

NNE NE ENE E

ESE SE SSE S

SSW SM WSW W

WNW NW NHW SUBTOTAL 0.020 0.020 0.013 0.020 0.013 0.026 0.066 0.099 0.085 0.066 0.072 0.053 0.046 0.059 0.039 0.013 0.710 O.OOQ 0.000 0.000 0.047 0.000 0.047 0.095 0.189 0.095 0.047

0. 04'7 0.095 0.047 0.047 0.047 0.000 0.805

0. 142 0.142

0. 095 0.095 0.095 0.142 0.379 0.521 0.521 0.426 0.473 0.284 0.284 0.379 0.237 0.095 4.307 0.426 0.095 0.189 0.095 0.095 0.331 0.710 0.710 0.805 0.663 0.142 0.615 0.331 Q.331 0.379 0.379 6.294 0.189 0.095 0.237 0.142 0.142 0.331 0.331 0.426 0.379 0.426 0.663 0.521 0.473 0.568 0.142 0.142 5.206

0. 852 0.710 0.615 0.710 0.142 0.095 0.757 1.088 0.142 0.757 1.278 0.757 0.331 0.521 0.710 0.521 9.986 0.426 0.426 0.189 0.047 0.000 0.000 0.000 0.189 a.426 0.237 0.426 0.000 0.047 0.095 0.142 0.284 2.934 0.095 0.000 0.000 a.aoo 0.000 0.000 0.000 0.189 0.142 0.189 0.047 0.047 0.000 0.000 0.047 0.047 0.805 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 2.149 1.487 1.338 1.156 0.486 0.973 2.337 3.411

'2. 594 2.811 3.148 2.372 1.560 2.000 1.743 1.480 31.046 TOTAL HOURS OF VALID STABZLZTY OBSERVATIONS TOTAL HOURS OFSTABILITY CLASS E

TOTAL HOURS OP VALID WZND DIRECTION-WIND SPEED-STABILZTY CLASS E

TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS TOTAL HOURS CALM 2128 664 656 2113 15 METEOROLOGZCAL FACILZTY BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA T BETWEEN 45.30 AND 89 59 METERS WIND SPEED AND DIRECTION MEASURED AT 92.63 METER LEVEL DATE PRINTED:

21-OCT-93 MEAN WZND SPEED

~

7.36 NOTE:

TOTALS AND SUBTOTALS ARE OBTAINED PROM UNROUNDED NUMBERS E1-65

0 JOINT PERCENTAOE FREQUENCIES OF WItlD SPEED BY WIND DIRECTION FOR STABILITY CI ASS F

( 1.5<

DELTA T<

4.0 C/100 M)

BROWNS FERRY NUCLEAR PLANT JUL 1,

93 SEP 30, 93 WIND DIRECTION CALM 0.6-1.4 1.5-3.4 WIND SPEED(MPHt 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4 24.5 TOTAL N

NtlE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW tlNW SUBTOTAL 0.000 0.000 0.000 0.000 0.000 0.038 0.009 0.000 0.000 0.000 0.009 0.009 0.000 0 ~ 019 0.000 a.oo9 0.095 0.000 0.000 0.000 0.000 0.000 0.047 0.000 0.000 0.000 0.000 0.047 0.000 0

~ 000 0.000 0.000 0.000 0.095 0.000 0.000 0.000 0.000 0.000 0.142 0.047 0.000 0.000 0.000 0.000 0 '47 0.000 0.095 0-000

0. 04'7 0.379 0.047 0.000 a.ooo 0.047 0.047 0.047 0.000 O.O47 0.000 0.000 0.047 0.047 0.047 0.000 0.000 0.000 0.379 0.000 0.095 0.047 0.095 0.095 0.142 0.095 0.000 0.095 0.142 0.095 0.095 0.000 0.000 0.047 0.047 1.088 0.095 0.237 0.663 0.237 0.379 0.284 0.379 0.426 0.142 0.095 0.331 0.095 0.095 0.000 0.047 0.047 3.549 0.237 0.521 0.473 0.189 0.047 o.aao 0.000 0.000 0.047 0,047 0.237 0.000 0

000 0.000 0.000 0.047 1.846 0.142 0.095 0.095 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 o.aoo 0.000 0 000 0.331 G.ooa 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 0.521 0.947

1. 278 0.568 0.568 0.700 0.530 0.473 0.284 0.284 0.767 0.293 0.142 0.114 0.095 0.199 7.761 TOTAL HOURS OF VALID STABILITY OBSERVATIONS TOTAL HOURS OF STABZLITY CI ASS F

TOTAL HOURS OF VALID WIND DIRECTZOtl WIND SPEED STABILITY CLASS P

TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS TOTAL HOURS CALM 2128 164 164 2113 2

METEOROLOGICAL PACILITY:

BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DEITA T BETWEEN -45'0 AND 89 59 METERS WIND SPEED AND DZRECTZON tlEASURED AT 92'3 METER LEVEI DATE PRINTED: 21-OCT-93 MEAN WIND SPEED

~ 10.28 NOTE TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS El-66

JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS G

(DELTA T

> 4.0 C/100 M)

BROWNS FERRY NUCLEAR PLANT JUL 1,

93 -

SEP 30'3 WIND DIRECTION CALM 0.6-1.4 1.5-3.4 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 N

NNE NE ENE E

ESE SE SSE "S

SSW SW WSW W

WNW NW NNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000'.000 0.000 0.000 0.000 Q.QQQ 0.000 0.000 0.000 0.000 0.000 0.000 o.aoo 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 Q.OQQ 0.000 0.000 Q.QQQ 0.000 0.000 0.000 O.O47 0.000 0.000 0.000 0.000 Q.QQQ 0.000 0.000 0.000 0.000 0.000 0.000 Q.aaa 0.000 0.000 0.047 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.047 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000'.000 0.000 0.000 0.000 0.000 0.095 0.142 0.331

0. 189 0.000 0.047 0.095 Q.095 0.095 0.142 0.000 0.047 0.000 0.000 0.000 0.000 0.047 0.379 0.331 0.189 0.000 0.000 0.047 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.284 0.331 a.ooo 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 o.aao 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 o.ooa 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.142 0.805 1.041 0.379 0.000 0.095 0.189 0.095 0.095 0.142 0.000 0 F 047 0.000 Q.QQQ 0.000 0.000 SUBTOTAL 0.000 0.000 0.047 0.047 0.047 1.278 0.994 0.615 0.000 3.029 TOTAL HOURS OF VALID STABILITY OBSERVATIONS TOTAL HOURS OF STABILITY CLASS G

TOTAL HOURS OF VALID WZND DIRECTION-WIND SPEED-STABILITY CLASS G

TOTAL HOURS OF VALID WIND DIRECTZON-WIND SPEED-STABILITY OBSERVATIONS TOTAL HOURS CALM 2128 64 64 2113 0

METEOROLOGICAL FACILITY:

BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 45'0 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT 92 ~ 63 METER LEVEL DATE PRINTED: 21-OCT-93 MEAN WIND SPEED ~ 13.35 NOTE:

TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS El-67

Radiological Impact Assessment Browns Ferry Nuclear Plant July - December 1993 Table 13 Joint Frequency Distribution in Percent for Stack Releases Fourth Quarter El-68

JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS A

tDELTA T<~-1.9 C/100 M)

BROWNS FERRY NUCLEAR PLANT OCT 1,

93 DEC 31, 93 WIND DZRECTZON CALM 0.6-1.4 1.5-3.4 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 N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW 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 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 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 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 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 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 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 o.ono 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 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SUBTOTAL 0.000 0.000 0.000 0.000 0.000 0 F 000 0.000 0 F 000 0.000 0.000 TOTAL HOURS OF VALZD STABILITY OBSERVATIONS TOTAL HOURS OF STABILITY CLASS A TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS A TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS TOTAL HOURS CALM 2201 0

0 2192 0

METEOROLOGICAL FACZLZTY:

BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 45'0 AND 89.59 HETERS WIND SPEED AND DIRECTION MEASURED AT 92.63 METER LEVEZ DATE PRINTED: 24-JAN-94 MEAN WIND SPEED

~

0.00 NOTE:

TOTAZ,S AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS El-69

JOINT PERCENTAGE FREQUENCIES OP WIND SPEED BY WIND DIRECTION POR STABILITY CLASS B

(-1.9<

DELTA T<~-1.7 C/100 M)

BROWNS PERRY NUCLEAR PLANT OCT lr 93 DEC 31r 93 WIND DIRECTION CALM 0.6-1.4 1.5-3.4 WIND SPEED t MPH) 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4

>m24.5 TOTAL N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W,

WNW NW NNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 r 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 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 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.046 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 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0 F 000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.046 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 0.000 0.000 0 F 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 F 000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.137 0.000 0.000 0.000 0.000 0.000 SUBTOTAL 0.000 0.000 0.000 0.046 0.000 0.046 0.046 0.000 0.000 0.137 TOTAL HOURS OP VALID STABILITY OBSERVATIONS TOTAL HOURS OP STABILITY CLASS B

TOTAL HOURS OP VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS B

TOTAL HOURS OP VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS TOTAL HOURS CALM 2201 3

3 2192 0

METEOROLOGICAL PACILITY:

BROWNS PERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 45.30 AND 89 59 METERS WIND SPEED AND DZRECTION MEASURED AT 92.63 METER LEVEL DATE PRINTED: 24-JAN-94 MEAN WIND SPEED

~

8.93 NOTE TOTALS AND SUBTOTALS ARE OBTAINED PROM UNROUNDED NUHBERS E1-70

JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILZTY CLASS C

(-1.7<

DELTA T<~-1.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT OCT 1,

93 DEC 31, 93 WIND DIRECTION CALM 0.6-1.4 1.5-3.4 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 N

NNE NE, ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW SUBTOTAL 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 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 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 0.046 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.091 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 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.046 0.000 0.046 0.000 0.000 0.000 0.137 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.091 0.000 0.000 0.000 0.000 0.000 0.091 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 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 0.046 0.000 0.000 0.046 0.000 0.182 0.000 0.046 0.000 0.000 0.000 0.319 TOTAL HOURS OF VAZ ZD STABILITY OBSERVATIONS TOTAL HOURS OF STABILITY CLASS C

TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS C

TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILZTY OBSERVATIONS TOTAL HOURS CALM 2201 7

7 2192 0

METEOROLOGICAL FACILITY:

BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 45.30 AND 89.59 METERS WIND SPEED,AND DZRECTION MEASURED AT 92 '3 METER LEVEL DATE PRINTED: 24-JAN-94 MEAN WIND SPEED

~

9.76 NOTE TOTALS AND 'SUBTOTAZS ARE OBTAINED FROM UNROUNDED NUMBERS El-71

JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABZLITY CLASS D

{-1.5< DELTA T<~-0 ~ 5 C/100 M)

BROWNS FERRY NUCLEAR PLANT OCT 1,

93 -

DEC 31, 93 WZND DIRECTION CALM 0.6-1.4 WIND SPEED(MPH) 1.5-3.4 3.5-5.4 5.5-7 '

7.5-12.4 12.5-18.4 18.5-24.4

>=24.5 TOTAL N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW SUBTOTAL 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 0.046 0.046 0.046 0.000 0.000 0.046 0.000 0.000 0.137 0.046 0.000 0.046 0.091 0.000 0.000 0.000 0.502 0.046 0.182 0.228 0.182 0.365 0.365 0.228 0.365 0.228 0.228 0.319 0.274 0.091 0.137 0.228 0.091 3.558 0". 228 0.091 0.456 0.182 0.274 0.365 0.821 0.319 0.182 0.228 0.502 0.319

0. 411 0.639 0.182 0.274 5.474 0.502 0.684 0.639 0.274 0.091 0.365 0.730 0.365 0.730 0.684 0.046 0.137 0.411 0.365 0.365 0.365 6.752 1.277 1.049 0.456 0.228 0.228 0.639 0.821 0.867 1.095 0.958 0.639 0.639 0.867 0.639 1.414 1.232 13.047 2.144 0.867 0.091 0.000 0.000 0 '30 1.141 1.642 0.912 0.867 1.232 0.730 0.547 2.007 2.281 1.962

17. 153 0.730 0.046 0.000 0.000 0.000 0.046 1.688 0.365

0. 912 0.319 0.091 0.137 0.274 F 274 1.323 1.141 7.345 0.046 0.137 0.000 0.000 0.000 0.046 0.411 0.000 0.182 0.046 0 F 000 F 000 0.182 0.274 0.411 0.046 1.779 5.018 3.102

1. 916 0.867 0.958 2.600 5.839 3.923 4.380 3.376 2.828 2.281 2.874 4.334 6.204 5.109 55.611 TOTAL HOURS OF VALID STABILITY OBSERVATIONS TOTAL HOURS OF STABIIZTY CLASS D

TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS D

TOTAI HOURS OF VALID WIND DIRECTION WIND SPEED-STABILITY OBSERVATIONS TOTAL HOURS CAIM 2201 1223 1219 2192 0

METEOROLOGICAL FACILITY:

BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN

45. 30 AND

89. 59 HETERS WIND SPEED AND DIRECTION MEASURED AT

92. 63 METER LEVEL DATE PRZNTED: 24-JAN-94 MEAN WIND SPEED

~ 12.16 NOTE:

TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS El-72

JOZNT, PERCENTAGE FREQUENCIES OF WIND SPEED BY WZND DIRECTION FOR STABILITY CLASS E

(-0.5<

DELTA T<~ 1.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT OCT 1,

93 -

DEC 31, 93 WIND DIRECTION CALM 0.6-1.4 1.5-3.4 WIND SPEED{MPH) 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 lb.5-24.4 24.5 TOTAL N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW SUBTOTAZ 0.006 0.000 0.017 0.006 0.017 0.011 0.011 0.029 0.017 0.017 0.017 0.011 0.023 0.017 0.017

0. 011 0.228 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.046 0.000 0.000

0.000 0.000 0.000 0.046 0.000 0.091 0.046 0.000

0. 137 0.046 0.137 0.091 0.091 0.228 0.091 0.137 0.137 0.091 0.182 0.137 0.091 0.091 1.734 0.046 0.046 0.000 0.228 0.137 0.182 0.274 0.365 0.091 0.091 0.000 0.091 0.091 0.182 0.137 0.091 2.053 0.091 0.137 0.046 0.091 0.137 4 0.365 1.095 0.639 0.137 0.046 0.137 0.274 0.137 0.228 0.000 0.091 3.650 0.639 0.912 1.049 0.274 0.091 0.684

l. 414 2.144 1.642 0.456 0.684 0.319 0.411 0.091 0.228 0.502

11. 542 0.730 0.502 0.319 0.137 0.000 0.867 1.779 1.505 1.597 0.639 0.547 0.319 0.137 0.228 0.228 0.547 10.082 0.046 0.046 0.091 0.000 0.000 0.228 0.547 0.684 0.821 0.228 0.091 0.091 0.000 0.046 0.091 0.182 3.193 0.000 0.000 0.000 0.000 0.000 0.000 0.228 0.137 0.365 0.000 0.000 0.000 0.000 0.000 0.091 0.000 0.821 1.602 1.642 1.659 0.781

0. 519 2.429 5.440 5.731 4.807 1.614 1.614 1.198 0.981 0.930 0.930 1.517 33.394 TOTAL HOURS OF VALID STABILITY OBSERVATIONS TOTAL HOURS OF STABILITY CLASS E

TOTAL HOURS OF VALID WIND DIRECTION WIND SPEED-STABILITY CIASS E

TOTAL HOURS OF VALID WZHD DIRECTION-WIND SPEED-STABILITY OBSERVATIONS TOTAL HOURS CALM 2201 737 732 2192 5

METEOROLOGICAL FACILITY:

BROWNS FERRY NUCZEAR PZANT STABILITY BASED ON DELTA-T BETWEEN 45 30 AND 89 59 METERS WIND SPEED AND DIRECTION MEASURED AT 92.63 METER LEVEL DATE PRINTED: 24-JAN-94 MEAN WIND SPEED

~ 11.89 NOTE:

TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS El-73

JOINT PERCENTAGE FREQUENCIES OF WZND SPEED BY WIND DIRECTION FOR STABILITY CLASS F

{ 1.5<

DELTA T<~ 4.0 C/100 M)

BROWNS FERRY NUCLEAR PLANT OCT 1,

93 DEC 31, 93

. WIND DIRECTION CALM 0.6-1.4 1.5-3.4 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 N

NNE NE ENE E

ESE SE SSE S

SSW SW

=

WSW W

WNW NW NNW SUBTOTAL 0.000 0.000 0.017 0.006 0.000 0.000 0.006 0.000

0. 011 0.006 0.000 0.006

0. 011 0.011

0. 011 0.006 0.091 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.046 0.046 0.046 0.000 0.182 0.000 0.000 0.137 0.046 0.000 0.000 0.046 0.000 0.046 0.046 0;000 0.046 0.046 0.046 0.046 0.046 0.547 0.137 0.046 0.000 0.000 0.182 0.046 0.137 0.091 0.091 0.000 0.046 0.046 0.046 0.000 0.000 0.046 0.912 0.091 0.000 0.000 0.091 0.137 0.091 0.365 0.182 0.046 0.000 0.046 0.046 0.000 0.046 0.000 0.000 1.141 0.091 0.000 0.091 0.091 0.274 0.365 0.867 0.365 0.365 0.091 0.046 0.046 0.000 0.046 0.000

0. 091 2."828 0.091 0.182 0.000 0.182 0.000 0.137 0.319 0.547 0.091 0.000 0.046 0.000 0.000 0.000 0.046 0.046 1.688 0.000 0.091 0.274 0.000 0.000 0.000 0.091 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.456 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 F 000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.411 0.319 0.519 0.416 0.593 0.639 1.831 1.186 0.696 0 '43 0.182 0.188 0.148 0.194 0.148 0.234 7.847 TOTAZ HOURS OF VALID STABZLZTY OBSERVATIONS TOTAL HOURS OF STABZLITY CLASS F

TOTAL HOURS OF VALID WIND DIRECTZON-WIND SPEED-STABILITY CLASS F

TOTAL HOURS OF VALID WZND DIRECTION-WIND SPEED-STABILITY OBSERVATZONS TOTAL HOURS CALM 2201 172 172 2192 2

METEOROLOGICAL FACILITY:

BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DEZTA-T BETWEEN 45.30 AND 89-59 METERS WIND SPEED AND DIRECTION MEASURED AT 92

~ 63 METER LEVEL DATE PRINTED: 24-JAN-94

'MEAN WIND SPEED

~

9.52 NOTE:

TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS El-74

JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DZRECTION FOR STABZLITY CLASS G

t DELTA T

> 4. 0 C/100 M)

BROWNS FERRY NUCLEAR PLANT OCT 1,

93 DEC 31, 93 WIND DIRECTION CALM 0.6-1.4

1. 5-3. 4 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 N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW SUBTOTAL 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 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 0.046 0.000 0.000 0.000 0.046 0.000 0.046 0.000 0.000 0.000 0.046 0.000 0.046 0.000 0.228 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.091 0.091 0.000 0.000 0.091 0.000 0.046 0.000 0.319 0.046 0.000 0.000 0.000 0.046 0.000 0.046 0.000 0.091 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.274 0.000 0.000 0.000 0.000 0.046

0. 137 0.091 0.182

0. 411 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.912 0.000 0.046 0.091 0.274 0.091 0.000 0.182 0.274 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.958 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 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 0.046 0.046 0.137 0.274 0.182 0.137 0.365 0.456 0.639 0.137 0.046 0.000 0.137 0.000 0.091 F 000 2.692 TOTAL HOURS OF VALID STABILITY OBSERVATIONS TOTAL HOURS OF STABILITY CLASS G

TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS G

TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS TOTAL HOURS CALM 2201 59 59 2192 0

HETEOROLOGZCAL FACZLITY:

BROWNS FERRY, NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 45.30 AND 89 '9 METERS WIND SPEED AND DIRECTION HEASURED AT 92.63 METER LEVEL DATE PRINTED: 24-JAN-94 MEAN WIND SPEED

= 10.26 NOTE:

TOTALS AND SUBTOTALS ARE OBTAZNED FROM UNROUNDED NUMBERS El-75

ML18037A813

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