ML18036B024

Semiannual Radioactive Effluent Rept for Jul-Dec 1991

ML18036B024
Person / Time
Site:	Browns Ferry
Issue date:	12/31/1991
From:	Baron R TENNESSEE VALLEY AUTHORITY
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
NUDOCS 9203060165
Download: ML18036B024 (145)

Text

ACCELERATED DIM3UBUTION DEMONSTPA.TION SYSTEM REGULAT% INFORMATION DISTRIBUTIOtYSTEM (RIDE)

I ACCESSION NBR:9203060165 DOC.DATE: 91/12/31 NOTARIZED:

NO DOCKET FACIL:50-259 Browns Ferry Nuclear Power Station, Unit 1, Tennessee 05000259 50-260 Browns Ferry Nuclear Power Station, Unit 2, Tennessee 05000260 50-296 Browns Ferry Nuclear Power Station, Unit 3, Tennessee 05000296 AUTH.NAME AUTHOR AFFILIATION BARON,R.R.

Tennessee Valley Authority RECIP.NAME RECIPIENT AFFILIATION

SUBJECT:

"Semiannual Radioactive Effluent Rept for Jul-Dec 1991."

W/920228 ltr.

DISTRIBUTION CODE:

IE48D COPIES RECEIVED:LTR ENCL SIZE:

TITLE: 50.36a(a)(2)

Semiannual Effluent Release Reports NOTES: 5&~E<<ICDI1 RECIPIENT ID CODE/NAME SANDERS,M, ROSS,T.

INTERNAL: AC Ol RGN2 FILE 02 EXTERNAL: BNL TICHLER,J03 NRC PDR COPIES LTTR ENCL 3

3 1

1 1

1 1

1 1

1 1

1 1

1 RECIPIENT ID CODE/NAME HEBDON,F WILLIAMS,J.

NRR/DREP/PRPB11 RGN2 DRSS/RPB EGGG SIMPSONFF COPIES LTTR ENCL 1

1 1

1 2

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2 NOTE TO ALL"RIDS" RECIPIENTS'LEASE HELP US TO REDUCE WASTE! CONTACl'HE DOCUMENT CONTROL DESK, ROOM Pl-37 (EXT. 20079) TO ELIMINATEYOUR NAMEFROM DISTRIBUTION LISTS FOR DOCUMENTS YOU DON'T NEED!

TOTAL NUMBER OF COPIES REQUIRED:

LTTR 17 ENCL

~

~

Tennessee Valley Authority, Post Office sox 2000. Decatur, Alabama 35609 FEB 28

>992 U.S. Nuclear Regulatory Commission ATTN:

Document Control Desk Washington, D.C.

20555 Gentlemen:

In the Matter of Tennessee Valley Authority Docket Nos.

50-259 50-260 50-296 BROWNS FERRY NUCLEAR PLANT (BFN) SEMIANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT JULY THROUGH DECEMBER 1991 In accordance with the BFN Radiological Effluent Manual, Section F.2, and Regulatory Guide 1.21, Revision 1, two copies of the semiannual Radioactive Effluent Release Report are provided.

The report consists of the following:

1.

The Radiological Impact Assessment Report (Enclosure 1) 2.

Effluent and Waste Disposal Semiannual Report (Enclosure 2) 3.

The Inoperable Radioactive Effluent Instrumentation Report (Enclosure 3) 4.

Changes to the offsite Dose Calculation Manual (Enclosure 4)

BFN Technical Specifications 3.2.D.2, 3.2.K.2, and 6.12.2 require the Inoperable Radioactive Effluent Instrumentation Report and changes to the Offsite Dose Calculation Manual to be included with the semiannual Radioactive Effluent Release Report.

65OC52 92030b01b5 911231 I

PDR ADOCK 05000259 R

PDR

U.S. Nuclear Regulatory Commission FEB 28

>sw.

Please refer any questions or comments to me at (205) 729-7566.

Sincerely, R ul R. Baron Manager of Site Licensing cc (Enclosures):

NRC Resident Inspector Browns Ferry Nuclear Plant Route 12, Box 637

Athens, Alabama 35611 Mr. Thierry M. Ross, Project Manager U.S. Nuclear Regulatory Commission One White Flint, North 11555 Rockville Pike Rockville, Maryland 20852 Mr. B. A. Wilson, Project Chief U.S. Nuclear Regulatory Commission Region II 101 Marietta Street, NW, Suite 2900 Atlanta, Georgia 30323 Mr. Paul Krippner American Nuclear Insurers The Exchange, Suite 245 270 Farmington Avenue Farmington, Connecticut 06032

ENCLOSURE 1

TENNESSEE VALLEY AUTHORITY SEMIANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT BROWNS'ERRY NUCLEAR PLANT (BFN)

"THE RADIOLOGICAL IMPACT ASSESSMENT REPORT"

, 9203060165

h

BFN Rad Impact July-Dec 1991 Page 1 of 72

~

Radiological Impact Assessment Browns Ferry Nuclear Plant July-December 1991 INTRODUCTION Potential doses to individuals and the population around Browns Ferry are calculated for each quarter as required in Section F.2 of the

'Radiological Effluent Manual.

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

Dispersion of radioactive effluents in the environment is estimated in accordance with the guidance provided by Regulatory Guides 1.109, l.illand 1.113 using meteorological data and riverflow data measured during the period.

Using dose calculation methodologies which are described in detail in the Browns Ferry Offsite Dose Calculation Manual, the doses are calculated and used to determine compliance with the dose limits contained in Browns Ferry's Operating License.

In this report, the doses resulting from releases are described and compared to quarterly and annual limits established for Browns Ferry.

SUMMARY

OF LI UID AND GASEOUS EFFLUENT RELEASES SECOND HALF 1991 Although nuclear plants are designed to contain the radioactive material created by the fission process, small amounts of this material escape from the fuel rods.

Also, very small amounts of the structures and components of the systems become activated through the bombardment of neutrons and are worn away.

This radioactive material can be transported throughout plant systems and released to the environment.

Airborne Releases The noble gas fission products do not mix with water and are given off in a gaseous form.

A very small amount of solid radioactivity is given off along with these noble gases.

The most significant releases are processed so that the radioactive material is filtered and/or decayed prior to release through the plant vents.

Sampling and monitoring methods are used to determine the amount of radioactive material released.

If,these methods indicate that radioactivity in airborne effluents is above preset limits, then releases are terminated.

Li uid Releases Some small amounts of radioactive material migrate into the primary coolant water.

The primary coolant water is routed through a purification system to remove most of these particles; however, not all are removed.

Some of the radioactive liquids may leak from pipes or valves in the system.

These liquids are collected in floor

BFN Rad Impact July-Dec 1991 Page 2 of 72 and equipment drains and sumps.

The collected liquids are then processed through a clean-up

system, composed of storage tanks, recycling systems, and demineralizers, to remove contaminants.

The purified water is. then monitored to determine the amount of radioactive material remaining in the water prior to its release.

Steps are taken to ensure that, the amount of radioactivity released to the environment is as low as reasonably achievable (ALARA). If the levels of radioactivity are above preset limits, the releases are circulated through the clean-up system again for additional processing.

All radioactivity released from the plant into the Tennessee River is quantified prior to release.

Effluent Monitorin

'Plant paths through which radioactivity is released are monitored.

These monitors record the radiation levels for each release.

Monitors which are used for liquid releases will automatically alarm and stop any release which is above regulatory limits.

Gaseous release monitors also provide alarming mechanisms to allow for the termination of any release above limits.

DOSE LIMITS The U.S. Nuclear Regulator Commission (NRC) requires nuclear power plants to be designed, built, and operated in such a way that the levels of radioactive material released into unrestricted areas is as low as reasonably achievable (ALARA).

To ensure that this is done, the plant's operating license includes Technical Specifications which govern the release of radioactivity.

These Technical Specifications specify limits for the release of radioactive effluents, as well as limits for doses to the general public from the release of these effluents.

These limits are set well below the NRC 10CFR20 limits which govern the concentrations of radioactivity and exposures permissible in unrestricted areas.

This ensures that radioactive effluent releases are ALARA.

The Technical Specification 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.

r

BFN Rad Impact July-Dec 1991 Page 3 of 72 The Technical Specification limit for the dose to a member of the general public at or beyond the site boundary from iodines and particulates released in airborne effluents is:

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

The Technical Specification limit for doses to a member of the general public from radioactive material in liquid effluents released to unrestricted areas, is:

Less than or equal to 1.5 mrem per quarter and 3 mrem per year (per reactor unit) to the total body, and-Less than or equal to 5 mrem per quarter and 10 mrem per year (per reactor unit) to any organ The EPA limits for total dose to the public in the vicinity of a nuclear power plant, established in the Environmental Dose Standard of 40 CFR 190, are:

Less than or equal to 25 mrem per year to the total body, Less than or equal to 75 mrem per year to the thyroid, and Less than or equal to 25 mrem per year to any other organ.

DOSE CALCULATIONS Estimated doses to the public are determined using computer models (the Gaseous Effluent Licensing Code, GELC, and the Quarterly Water Dose Assessment

Code, QWATA).

These models are based on guidance provided by the NRC (in Regulatory Guides 1.109, 1.111 and 1.113) for determining the potential dose to individuals and populations living in the vicinity of the plant.

The area around the plant is analyzed to determine the pathways through which the public may receive a dose.

The doses calculated are a representation-of the dose to a "maximum exposed individual."

Some of the factors used in these calculations (such as ingestion rates) are maximum values.

Many of these factors are obtained from NUREG/CR-1004.

The values chosen will tend to overestimate the dose to this "maximum" person.

The expected dose to actual individuals is lower.

The calculation methods and results of the calculations are presented in the following sections.

BFN Rad Impact July-Dec 1991 Page 4 of 72 DOSES FROM AIRBORNE EFFLUENTS For airborne effluents, the public can be exposed to radiation from several sources:

direct radiation from the radioactivity in the air, direct radiation from radioactivity deposited on the glound p inhalation of airborne radioactivity, ingestion of vegetation which contains radioactivity deposited from the atmosphere, and ingestion of milk and beef which contains radioactivity deposited from the atmosphere onto vegetation which is then eaten by milk and beef animals.

'he concentrations of radioactivity in the air and the soil are estimated by the computer model GELC which uses the actual meteorological conditions to determine the distribution of the effluents in the atmosphere.

Again, as many of the parameters as possible are based on actual site specific data.

The model that is used to estimate

dose, as well as the parameters input to the model, is described in detail in Section 1.0 of the Browns Ferry Nuclear Plant Offsite Dose Calculation Manual.

Airborne Release Points and Meteorolo ical Data 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.'uarterly joint frequency distributions (JFDs) are calculated for each release point using the appropriate levels of meteorological data.

A joint frequency distribution gives the percentage of the time in a quarter that the wind is blowing out of a 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.

There are four routine release points from Browns Ferry Nuclear Plant:

the turbine building, the radwaste building, the reactor building, and the'tack.

BFN Rad Impact July-Dec 1991 Page 5 of 72

, Releases from the turbine building are considered ground-level releases to determine the dispersion of the airborne effluents.

The ground-level JFD is derived from windspeeds and directions measured 10 meters above ground and from the vertical temperature difference between 10 and 46 meters.

Releases from the radwaste and reactor buildings are considered split-level releases to determine the dispersion of the airborne effluents.

This means that 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 effluent 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 ve'rtical 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.

Releases from the stack are considered elevated-level releases to determine the dispersion of the airborne effluents.

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.

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 vicinity of BFN during periods of winds with a.southerly component, overcast skies, and relatively high wind speeds.

Then, the lower layer (10-46 meters) stability class tends to be more stable than would be expected.

However, during this infrequent condition, dose estimates will be conservative.

BFN Rad Impact July-Dec 1991 Page 6 of 72 External Ex osure Dose Airborne Effluents Dose estimates for maximum external air exposures (gamma-air and beta-air doses) are made for points at and beyond the site boundary.

The reported dose is chosen for the offsite location with the highest calculated exposure during the quarter.

The doses calculated for Browns Ferry Nuclear Plant for each quarter are shown below.

Individual Doses from Airborne Effluents External Air Exposures (mrad)

Dose Location Third uarter 1 91 Gamma Air dose Beta Air dose 9.4E-03 mrad 1.7E-02 mrad S at 2550 meters S at 2550 meters Fourth uarter 1991 Gamma Air dose Beta Air dose 1.0E-03 mrad 4.5E-04 mrad NW at 8500 meters NW at 8500 meters

0

BFN Rad Impact July-Dec 1991 Page 7 of 72 Submersion Dose Airborne Effluents External doses to the skin and total body, due to submersion in a cloud of noble gases, are estimated for the nearest residence in each sector.

The highest of these exposures is chosen and is assumed to be the maximum individual dose.

The submersion doses calculated for Browns Ferry Nuclear Plant for each quarter are shown below.

Individual Doses from Airborne Effluents Submersion Exposures (mrem)

Third uarter 1

1 Dose Location Total Body Skin 8.1E-03 mrem 1.8E-02 mrem NNW at 1524 meters NNW at 1524 meters Fourth uarter 1

Total Body Skin 9.6E-04 mrem 1.4E-03 mrem HW at 3658 meters NW at 3658 meters

BFN Rad Impact July-Dec 1991 Page 8 of 72 t

Or an Dose Airborne Effluents Internal 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:

ingestion of cow/goat milk, ingestion of beef, and ingestion of vegetables.

Doses are calculated based on the reported iodine and part'iculate releases.

To determine the maximum organ dose, the dose contribution from the three 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.

The organ doses calculated for Browns Ferry Nuclear Plant for each quarter are shown below.

Individual Doses from Airborne Effluents Maximum Organ (mrem)

Organ Bone Age Group Child Dose 1.4E-01 mrem Individual Pathway Contributions:

Vegetable Ingestion 1.2E-01 1

Beef Ingestion 4.0E-03 Inhalation 3.6E-04 Ground Contamination 1.5E-02 1

Milk Ingestion N/A Fourth uarter 1

1 Thyroid Child 1.2E-02 mrem Individual Pathway Contributions:

Vegetable Ingestion 5.5E-03 Beef Ingestion 2.9E-05 Inhalation3 5.9E-03 Ground Contamination 7.5E-04 3

Milk Ingestion N/A 1 Maximum real receptor is located at 1791 meters in the NNW sector.

Calculated for the site boundary at 2275 meters in the NW sector.

Maximum real receptor is located at 1791 meters in the NNM sector.

4 Calculated for the site boundary at 1525 meters in the N sector.

BFN Rad Impact July-Dec 1991 Page 9 of 72 Dose Summa Airborne Effluents The table below gives a comparison of the calculated quarterly doses to their respective limits.

Doses from Airborne Effluents Second Half 1991 Browns Ferry Nuclear Plant Dose Pathway Airborne-Gamma air Dose 3

4 9.4E-03 mrad 1.0E-03 mrad Quarter Dose Quarterly Limit*

5 mrad Percent of Limit 1

1 Airborne-Beta air Dose 3

1.7E-02 mrad 4

4.5E-04 mrad 10 mrad 1

1 Airborne-Max Organ Dose 3

1.4E-Ol mrem 4

1.2E-02 mrem 7.5 mrem 1.9 1

Since airborne releases are quantified on a per site basis, and the Technical Specification dose limits are given on a per unit basis, calculated airborne doses are initially compared to the per unit limit.

If this limit is exceeded, the release data is reanalyzed to determine which portion of the releases were attributable to each reactor unit.

Then these per unit releases can be used to calculate per unit doses which are compared to the per unit dose limits.

As is, shown by the table, all calculated quarterly doses were well below the allowable limits established in Browns Ferry's Technical Specifications.

BFN Rad Impact July-Dec 1991 Page 10 of 72 DOSES FROM LI UID EFFLUENTS 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 in the river sediment (recreation).

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 the Browns Ferry Nuclear Plant Offsite Dose Calculation Manual.

Li uid Release Points and River Data 0

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

All routine 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 will initially be entrained in one-fifth of the water which flows past the plant.

The QWATA code makes the assumption that this mixing condition holds true until the water is completely mixed at the first downstream dam, at Tennessee River Mile 283.0.

The average river flows past the plant site were 34,926 ft /s for the third quarter of 1991 and 59,007 ft /s for the fourth quarter.

Dose Estimates Li uid Effluents Doses are calculated for recreation, consumption of fish, and drinking water 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

BFN Rad Impact July-Dec 1991 Page ll of 72 (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 21 kg (6.9 kg for a child) per year of 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 standing on the shoreline just below the outfall from Browns Ferry.

Dose estimates for the maximum individual due to liquid effluents for each quarter in the period are presented below.

Individual Doses from Liquid Effluents (mrem)

Third uarter 1 91 Organ Total Body Age Group Adult Dose 4.3E-02,mrem Individual Pathway Contributions:

Water Ingestion 2..1E-04 Fish Ingestion 4.0E-02 Recreation 3.4E-03 Liver Teen 6.5E-02 mrem Individual Pathway Contributions:

Water Ingestion 2.9E-04 Fish Ingestion '.1E-02 Recreation 3.4E-03 Fourth uarter 1

1 Total Body Adult 1.3E-02 mrem Individual Pathway Contributions:

Water Ingestion 6.1E-05 Fish Ingestion 1.1E-02 Recreation 1.7E-03 Liver Teen 1.9E-02 mrem Individual Pathway Contributions:

Water Ingestion 8.9E-05 Fish Ingestion 1.7E-02 Recreation 1.7E-03

0

BFN Rad Impact July-Dec 1991 Page 12 of 72 Dose Summa Li uid Effluents The table below gives a comparison of the calculated liquid doses for the period to their respective quarterly limits.

Doses from Liquid Effluents Second Half 1991 Browns Ferry Nuclear Plant Dose Pathway Quarter Dose Quarterly Limit*

Percent of Quarterly Limit Liquid-Total Body Dose 3

4.3E-02 mrem 1.5 mrem 2.9 Liquid-Max Organ Dose 4

1.3E-02 mrem 3

6.5E-02 mrem 4

1.9E-02 mrem 5 mrem 1

1.3 1

The quarterly limit used for liquid doses is the one-unit dose limit.

As is shown by the table, all calculated quarterly doses were well below the allowable limits established in Browns Ferry's Technical Specifications.

BFN Rad Impact July-Dec 1991 Page 13 of 72 POPULATION DOSES Population doses calculated for for highest exposed organ due to airborne effluents are 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'xternal 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 effluents 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 effluents are presented below.

Browns Fer Nuclear Plant Po ulation Doses Second Half 1991 Third Quarter 1991 Total Body Dose Maximum Organ Dose (organ)

Liquid Airborne 3.8E-Ol man-rem 1.6E-01 man-rem 5.8E-01 man-rem (liver) 2.2E-01 man-rem (bone)

Fourth Quarter 1991 Liquid Airborne 1.0E-01 man-rem 2.9E-02 man-rem 1.6E-Ol man-rem (liver) 5.2E-02 man-rem (thyroid)

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

BFN Rad Impact July-Dec 1991 Page 14 of 72 DIRECT RADIATION External gamma radiat'ion 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 15.8 mR/quarter at onsite stations and approximately 14.2 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 nonoperating 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 effluents.

DOSE TO MEMBERS OF THE PUBLIC INSIDE THE SITE BOUNDARY No routine activities within the site boundary by members of the public have been identified which would lead to their radiation exposure.

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

The annual dose to ariy organ other than thyroid for the maximum individual is conservatively estimated by summing the following doses:

the total body air submersio'n dose for each quarter, the critical organ dose (for any organ other than the thyroid) from airborne effluents for each quarter from ground contamination, inhalation and ingestion, the total body dose from liquid effluents for each quarter, the maximum organ dose (for any organ other than the thyroid) from liquid effluents for each quarter, and any identifiable increase in direct radiation dose levels as measured by the environmental monitoring program.

This dose is compared to the 40 CFR '190 limit for total body or any organ dose (other than thyroid) to determine compliance.

BFN Rad Impact July-Dec 1991 Page 15 of 72 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 effluents for each quarter, the total body dose from liquid effluents for each quarter, the thyroid dose from liquid effluents for each quarter, and any identifiable increase in direct radiation dose levels as measured by the environmental monitoring program.

This dose is compared to the 40 CFR 190 limit for thyroid dose to determine compliance.

Cumulative annual total doses are presented in the following section of this report.

Total Dose from Fuel Cycle Calendar Year 1991 Browns Ferry Nuclear Plant Dose First Quarter Total Bod or an Or an Dose (mrem)

(except thyroid)

Total body air submersion dose Maximum organ dose (airborne)

Total body dose (liquid)

Maximum organ dose (liquid)

Direct radiation dose 2.2E-04 1.9E-03 1.8E-02 2.6E-02 O.OE-OO 8.1E-03 1.4E-01 4.3E-02 6.5E-02 0.0E-OO Second Third Quarter Quarter Fourth Quarter 9.6E-04 1.2E-02 1.3E-02 1.9E-02 O.OE-OO Total 1.5E-02 4.6E-02 2.6E-01 4 'E-02 Cumulative Total Dose (Total Body or other organ) mrem 3.7E-01 Total body air submersion dose Thyroid dose (airborne)

Total body dose (liquid)

Thyroid dose (liquid)

Direct radiation dose O.OE-OO 6.1E-04 5.5E-03 4.4E-04 O.OE-OO 2.2E-04 2.3E-04 1.8E-02 1.7E-03 O.OE-OO 8.1E-03 3.4E-02 4.3E-02 3.4E-03 O.OE-OO 9.6E-04 1.2E-02 1.3E-02 3.0E-03 O.OE-OO Total (Thyroid)

Cumulative Total Dose (Thyroid) mrem 1.5E-01 6.6E-03 2.0E-02 8.9E-02 2.9E-02

BFN Rad Impact July-Dec 1991 Page 16 of 72 CONCLUSIO As a result of operation of Browns Ferry Nuclear Plant for the second half of 1991, radioactive effluents were released to the atmosphere and the Tennessee River.

The released radioactivity, resulted in estimated potential doses to the public which are well below the Technical Specification Limits and Regulatory Guidance.

Cumulative doses for the calendar year are given below along with a comparison to the respective annual limits for the doses.

Cumulative Doses from Effluents Calendar Year 1991 Browns Ferry Nuclear Plant Percent of Annual Limit Dose Pathway Airborne-Gamma air Dose Airborne-Beta air Dose Airborne-Max Organ Dose Liquid-Total Body Dose Liquid-Max Organ Dose Total Dose Thyroid 1.1E-02 mrad 1.8E-02 mrad 1.6E-Ol mrem 8.0E-02 mrem 1.2E-Ol mrem 1.5E-Ol mrem 10 mrad 20 mradl 15 mreml 3 mrem 10 mrem2 75 mrem 1

1%

1.1 2.7 1.2 1

Total Dose Total Body or Organ other than Thyroid 3.7E-01 mrem 25 mrem 1.5 Since airborne releases are "quantified on a per site basis, and the Technical Specification dose limits are given on a per unit basis, calculated airborne doses are initially compared to the per unit limit.

If this limit is exceeded, the release data is reanalyzed to determine which portion of the releases were attributable to each reactor unit.

Then these per unit releases can be used to calculate per unit doses which are compared to the per unit dose limits.

The quarterly limit used for liquid doses is the one-unit dose limit.

ATTACHMENT 1 BROWNS FERRY NUCLEAR PLANT SECOND HALF 1991 METEOROLOGICAL DATA

JOINT PERCENTAGE FREQUENCIES ND SPEED BY 'WIND DIRECTION FOR STABILITY CLASS A (DELTA T<=-1.9 C/100 M)

BROWNS FERRY NUCLEAR PLANT JUL 1 I 91 SEP 30 i 91 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 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 a.a 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Q.Q Q.Q o.a 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.464 1.300 1.300 0.371 0.232 0.046 0.0 0.0 0.0 0.0 0.0 0.0 0.046 0.0 0.0 0.464 1.300 0.975 0.557 0.557 0.929 0.743

0. 511 0.279 0.232 0.046 0.186 0.279 0.093 0.046 o.a46 0.232 0.279 0.046 0.0 0.0 0.0

0. 139 0.139 0.279 0.650 0.093 0.743 1.068

0. 186 a.o 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.325 0.882 0.464 0.093 0.093 0.046 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Q.Q 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Q.a 0.0 1.021 1.439 0.371 0.046 0.046 0.696 2.043

2. 321 1.857 0.929 1.161

0. 929 0.650 0.882 1.764 0.604 SUBTOTAL 0.0 0.0 3.714 6.639 2.507 3.668 0.232 0.0 0.0 16.759, TOTAL HOURS OF VALZD STABILITY OBSERVATIONS 2199 TOTAL HOURS OF STABILITY CLASS A 362 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS A 361 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2154 TOTAL HOURS CALM 0

METEOROLOGICAL FACILITY-MET FACILITY LOCATED 1-3 KM ESE OF BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON LAPSE RATE MEASURED BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT THE 10.42 METER LEVEL MEAN WIND SPEED

~

5.6 MPH DATE PRINTED: 10/'28/91 NOTE:

TOTALS AND SUBTOTALS ABOVE ARE OBTAINED FROM UNROUNDED NUMBERS Q

OP I

fD M I

w (D

C4 O

0 H

% r 9

M 'O M%A0

JOINT PERCENTAGE FREQUENCIES D SPEED BY WIND DIRECTION POR 0

STABILITY CLASS B

(-1. 9 <

DELTA-T<MM-I. 7 C/100 M)

BROWNS PERRY NVCLEAR PLANT JUL 1M 91 SEP 30M 91 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 0.0 0.0 0.0 0.0 0 ~ 0 Q.o 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 O.Q 0.0 0.0 O.Q 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 a.a 0.0 0.0 o.a 0.0 0.046 0.046 0.093 0.279 0.929 0.464 0.418

"'Q.093 0.186 0.139 0.0 0.0 0.0

0. 139 0.139 0.139 0.046 0.046 0.046 0.0 0.046 0.046 0.046 0.093 0.650 0.232 0.325 0.279 0.093 0.186 0.325 0.139 0.0 0.093 0.0 0.046 0.0 0.0 0.0 0.0 0.0 0.325 0.325 0.557 0.046 0.093 0.046 0.139

,0. 0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.093 0.232 0.139 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 o.a 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Q.O 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.418 0.511 0.418 Q.093 0.186

0. 139 0.325 0.975 0.511 0.464 0.186 0.836 0.696 0.743 1.068 0.279 SUBTOTAL 0.0 0.0 2.693 2.368 2.043 0.743 0.0 0.0 0.0 7.846 TOTAL HOURS OF VAZID STABILITY OBSERVATIONS 2199 TOTAL HOVRS OP STABILITY CLASS B

170 TOTAL HOURS OF VALZD WIND DIRECTION-WIND SPEED-STABILITY CLASS B

169 TOTAL HOURS OF VALID WZND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2154 TOTAL HOURS CALM 0

METEOROLOGICAL PACZLITY: MET PACILITY LOCATED 1.3 KM ESE OF BROWNS PERRY NUCLEAR PZANT STABILITY BASED ON LAPSE RATE MEASURED BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT THE 10.42 METER IEVEL MEAN WIND SPEED

~

4.8 MPH DATE PRINTED 1Q/28/91 NOTE:

TOTAZS AND SVBTOTALS ABOVE ARE OBTAZNED FROM UNROUNDED NUMBERS C

00 Q

'LC,'

PS

~

U Q CO fb O

O 0

H tht g

~ 'd h)r 0,

JOINT PERCENTAGE FREQUENCIES D SPEED BY WIND DIRECTION FOR 0

STABILITY CLASS C (-l. 7< DELTA-T<~-1 5 C/100 M)

BROWNS FERRY.NUCLEAR PLANT JUL 1,

91 SEP 30, 91 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.i TOTAL N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0 '

0.0 0.0 0.0 0.0 0.0 0.0 0.0 a.a 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.093 0.046 0.093 0.0 0.139 0.232 0.464 0.511 0.139 0.139 0.371 0.046 0.0 0.0 0.0 0.0 0.093

0. 139 0.139 0.046 0.232 0.093 0.0 0.0 0.0 0.046 0.046 0.557

0. 418 0.464 0.093 0.0 0.139 0.046 0.0 0.0 0.046 0.0 0.0 0.0 0.0 0.0 0.093 0.093 0.464 0.325 0.0 0.139 0.093 0.046 0.046 0.0 0.0 0.0 0.0 0.0 0.0 a.o 0.0 0.0 0.093 0.232 0.0 0.046 a.o 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.046 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

'0.0 0.0 0.0 0.0 0.0 0.0 a.o 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.186 0.418 0.279 0.279 0.046 0.418 0.325 0.464 0.511 0.139 0.186

0. 511 0.696 0.975 1.021 0.139 SUBTOTAL 0

0 0.0 2.275 2.368 1.207

0. 650 0.093 0.0 0.0 6.592 TOTAL HOURS OF VALID STABZZITY OBSERVATIONS 2199 TOTAL HOURS OF STABILITY CLASS C

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

142 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2154 TOTAL HOURS CALM 0

METEOROLOGICAL FACILITY: MET FACILZTY ZOCATED 1.3 KM ESE OF BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON LAPSE RATE MEASURED BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTZON MEASURED AT THE 10 42 METER LEVEL DATE PRINTED ~ 10/28/91 MEAN WIND SPEED

~

4.7 MPH NOTE:

TOTALS AND SUBTOTALS ABOVE ARE OBTAINED FROM UNROUNDED NUMBERS W W OS C

006 'C I

~

ID CL O

0 M

th ~ g h) wO

JOINT PERCENTAGE FREQUENCIES D SPEED BY WIND DIRECTION POR STABILZTY CLASS D

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

BROWNS PERRY NUCLEAR PLANT JUL 1,

91 SEP 30, 91 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 0.006

0. 015 0.007 0.012 0.008 0.015 0.017 0.026 0.033 0.055 0.025 0.025 0.020 0.005 0.004 0.004 0.0 0.0 0.046 0.093 0.093 0.046 0.093 0.232 0.186 0.557 0.325 0.186 0.046 Q.Q93 0.0 0.0 0.279 0.650 0.279 0.418 0.279 0.604 0.650 0.929 1.253

1. 857 0.789 0.929 0.836 0.139 0.186 Q.186 0.325

0. 371 0.279 0.464 0.279 0.325 0.557 0.093 0.093 0.186 0.139

0. 557 1.161 0.882 0.139 0.418 0.232, 0.418

0. 418 0.093 0.046 0.604 0.604 0.0 0.0 0.0 0.0 0.279 0.511 0.557 0.279 0.186 0.975 0.325 0.046 0.046 0.046 0.046 0.0 0.0 0.0 0.0 0.0 0.0 0.139 0.046 0.046 0.186 0.093 0.0 0.046 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 O.D 0.0 0.0 0.0 0.093 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 D.O 0.0 0.0 1.910 1.779 1.122 1.126 0.751 1;640 1.920 1.280 1.565 2.655 1.279 1.975 2.713 1.723 0.654 1.072 SUBTOTAL 0.279 1.996 10.260 6.267 4.225 1.903 0.232 0.0 0.0 25.162 TOTAL HOURS OF VALID STABILITY OBSERVATZONS 2199 TOTAL HOURS OF STABILITY CIASS D

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

542 TOTAL HOURS OP VALZD WZND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2154 TOTAL HOURS CALM 6

METEOROLOGICAL PACILZTY: MET PACILITY LOCATED 1.3 KM ESE OF BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON LAPSE RATE MEASURED BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT THE 10.42 METER LEVEL MEAN WIND SPEED

~

4.1 MPH DATE PRINTED: 10/28/91 NOTE'OTALS AND SUBTOTALS ABOVE ARE OBTAINED PROM UNROUNDED NUMBERS 00 tb M I

hD H Ql O 8 0 0

0 M

g weQ MM 0

JOINT PERCENTAGE FREQUENCIES ND SPEED BY WZND DIRECTION FOR STABILITY CLASS E

(-0.5<

DELTA-T<~ 1.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT JUL 1,

91 - SEP 30, 91 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 0.092 0.075 0.054 0.078 0.088 0.102 0.082 0.075 0.075 0.051 0.061 0.071 Q.054 0.037 0.014 0.058 0.279 0.279 0.232 0.325 0.186 0.325 0.511 0.418 0.371 0.371 0.511 0.186 0.093 Q.139 0.093 0.093 0.975 0.743 0.511 0.743 1.021

1. 068 0.604 0.604 0.650 0.325 0.325 0.789 0.650 0.371 Q.093 0.696 0.975 Q.789 0.371 0.696 0.929 0.789 0.371 0.0 0.0 0.0 0.0 0.232

0. 511 0.186 a.a 0.279 0.232 0.371 Q.325 0.093 0.186 0.0 0.046 0.0 0.0 0.0 0.0 0.046 0.046 0.093 0.093 0.186 0.232 0.0 0.046 0.0 0.046 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.279 0.0 0.0 0.0 0.0 Q.a 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0, 0.0 0.0 Q.a 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0'.0 0.0 0.0 0.0 0.0 0.0 0.0 Q.a O.Q 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 2.784 2.257

1. 540 1.935

2. 456 2.284 1.614 1.096 1.096 0.747 0.

897'.325 1.354 0.827-0.292 1.590 SUBTOTAL 1.068 4.410 10.167 6.128 1.718 0.6Q4 0.0 0.0 0.0 24.095 TOTAL HOURS OF VALID STABILITY OBSERVATZONS 2199 TOTAL HOURS OF STABILITY CLASS E

538 TOTAL HOURS'F VALID WIND DIRECTION WIND SPEED STABILITY CLASS E

519 TOTAL HOURS OP VALID WIND DIRECTION-WIND SPEED-STABZLITY OBSERVATZONS 2154 TOTAL HOURS CALM 23 METEOROLOGICAL FACILITY: MET PACZLZTY LOCATED 1 3

KM ESE OP BROWNS PERRY NUCLEAR PLANT STABILITY BASED ON LAPSE RATE MEASURED BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT THE 10.42 METER LEVEL MEAN WIND SPEED

=

3.0

MPH, DATE PRINTED: 10/28/91 NOTE:

TOTALS AND SUBTOTALS ABOVE ARE OBTAINED PROM UNROUNDED NUMBERS C4W C

QQ (D N I

to Cl 0) r lD C A

0 ~ g M 'U M~O

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

( 1. 5 < DELTA-T<

4. 0 C/100 M)

BROWNS FERRY NUCLEAR PLANT JUL 1,

91 SEP 30, 91 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 12.5-18.4'8.5-24.4

>~24.5

,TOTAL N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW SUBTOTAL 0.328 0.238 0.179

0. 218 0.308 0.119 0.050 0.020 0.030 0.020 0.0 0.030 0.0 0.010 0.020 0.149

1. 71.8 0.325 0.279 0.279 0.232 0.325 0.279 0.232 0.093 0.093 0.093 0.0 0.139 0.0 0.046 0.046 0.232 2.693 1.207 0.836 0.557 0.789

1. 114 0.279 0.0 0.0 0.046 0.0 0.0 0.0 0.0 0.0 0.046 0.464 5.339 Q.41&

0.696 0.139 0.279 0.325 0.046 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.325 2.228 0.186 0.0 0.046 0-;0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.046 0.0 0.0 0.0 0.093 0.371 0.0 0.0 0.0 O.Q 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 O.Q O.Q 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0 '

0.0 0.0 0.0 0.0 0.0

=

0.0 0.0 0.0 Q.O.

0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

'.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 2.463 2.049

1. 200

1. 518 2.072 0.723 0.282 0.113

0. ).69 0.113 0.0 0.-215 0.0 0.056 0.113 1.263 12.349 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2199 TOTAL HOURS OP STABILITY CLASS F

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

266 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2154 TOTAL HOURS CALM 37 METEOROLOGICAL PACILITY: MET FACILITY LOCATED 1

~ 3 KM ESE OP BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON LAPSE RATE MEASURED BETWEEN

10. 03 AND

45. 30 METERS WIND SPEED AND DIRECTION MEASURED AT THE 10-42 METER LEVEZ MEAN WIND SPEED

~

2.3 MPH DATE PRINTED: 10/28/91 NOTE:

TOTALS AND, SVBTOTALS ABOVE ARE OBTAINED PROM UNROUNDED NUMBERS 00 tD Iet QA 0

H W r g

M'd V '%

h) w 0

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

(DELTA T

> 4.0 C/100 M)

BROWNS FERRY NUCLEAR PLANT JUL 1,. 91 SEP 30, 91 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 0.462 0.328 0.097 0.255 0.036 0.0 0.0 0.024 0.0

0. 012 0.0 0.0 0.0 0.0 0.012 0.073 1.300 0.696 0.511 0.186 0.325 0.046 0.0 0.0 0.093 0 '

0.0 0.0 0.0 0.0 0.0 0.046 0.186 2.089 1.068 0.743 0.186 0.650 0.093 0.0 0.0 0.0 0.0 0.046 0.0 0.0 0.0 0.0 0.0 0.093 2.878 0.186 0.232 0.046 0.139 0.186 0.0 0.046 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0 '36 0.0 0.046 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.046 0.0 0.0 0.046 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.046 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

- 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 2.412

~

1.860 0.561 1.369 0.361 0.0 0.046 0.117 0.0 0.059 0.0 0.0 0.0 0.0 0.059 0.351 7.196 TOTAL HOURS OF VALZD STABILITY OBSERVATIONS 2199 TOTAL HOURS OF STABILITY CLASS G

159 TOTAL HOURS OF VAIID WIND DZRECTZON-WIND SPEED-STABILITY CLASS G

155 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2154 TOTAL HOURS CALM 28 METEOROLOGICAL FACZLITY: MET FACILITY LOCATED 1.3 KM ESE OF BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON LAPSE RATE MEASURED BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT THE 10.42 METER LEVEL MEAN WIND SPEED

~

1. 9 MPH DATE PRINTED: 10/28/91 NOTE:

TOTALS AND SUBTOTALS ABOVE ARE OBTAINED FROM UNROUNDED NUMBERS M W OS C

OQ i

0 Y I

M(D 0 O

O H

Hl w g V> '0 Nw0

STABILITY CLASS A

(DELTA T< -1.9 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 1

OF 2

GROUND LEVEL RELEASE MODE JUL 1<

91 - SEP 30, 91 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 '

18.5-24.4 24.5 TOTAL N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW 0.0 0.0 0.0 0.0 0.0 0.0 a.o 0.0 0.0 0.0 0.0 0.0 0.0 0.0 a.o 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.009 0.017 0.012 0.002 0.0 a.o 0.0 0.0 0.0 0.0 0.0 0.0 0.002 0.0 0.0 0.017 0.042 0.013 0.022 0.012 0.012 0.011 0.005 0.004 0.002 0.0 0.018 0.025 0.009 o.oo4 0.006 0.032 0.042 0.004 0.0 0.0 0.0 0.009 0.007 0.020 0.049 0.008

0. 119 0.168 0.029 0.0 0.0 0.0 0.0 0.0 a.o 0.0 0.0 0.0 0.0 0.046

0. 113 0.079 0.018 0.018 0.009 0.0 0.0 0.0 0.0 0;0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 a.a 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Q.a 0.0 0.0 0.0 0.0 0.0 Q.Q a.o 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.155 0.211 0.049 0.004 0.006 0.049 0.092 0.035 0.034 0.014 0.012 0.021 0.013

0. 0'70 0.164 0.087 SUBTOTAI 0.0

-0.0 0.041 0.141 0.235 0.554 0.045 0.0 0.0 1.016 TOTAL.HOURS OF VALID OBSERVATIONS 2136.000 TOTAL HOURS OF GROUND LEVEL RELEASE 110.550 TOTAL HOURS OF STABILITY CLASS A 22.670 TOTAL HOURS OF GROUND LEVEL STABII.ZTY CLASS A 21.700 METEOROLOGICAL FACZLITY:

MET FACILITY LOCATED 1 '3 KM ESE OF BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND DIRECTION MEASURED AT 10.42 METER IEVEL WIND SPEED MEASURED AT 10.42 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S NOTE:

TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS DATE PRINTED 10/28/91

<U W Cd C

00 W 'R 03 Y I

M lb C

O 0

Hg 3O '0 M 3O 83 fO ~ 0

,I

SPLIT JOINT PERCENTAGE PREOUE I

F WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS B

(

1 9(

DELTA T(=

1 7 C/100 M3 BROWNS FERRY NVCLEAR PLANT PART 1

OF 2

GROUND LEVEL RELEASE MODE JUL 1 6 91 SEP 30 6

91 WIND DIRECTION 6.6-1.6 1.5-3.4 WIND SPEED'(MPH3 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 0.0 0.0 0.0 0.0 0.0 0 '

0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0 '

0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

, 0.0 0.0 0.0 0.0 0.0 0.0 0 '

0.0 0.0 0.0 0.010 0.0 O.Q 0'. 0 0.0 O.Q 0.0 0.0 0.0 0.002 0.000 0.0 0.001 0.005 0.0 O.Q07 0.0 O.Q Q.O 0.014 0.0 0.002 0.002 0.0 0.013 0.028 0.010 0.0 0.011 0.0 0.008 0.0 0.0 0.0 0.0 0.0 0.017 0.017 0.042 0.003 0.016 0.009 0.023 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

0. 015 0.026 0.021 0.0 0.0 0.0 0.0 0.0 0,.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0 ~ 0 0.0 0.0 0.0 0.0 0.0 0.029 0.039 0.033 0.0 0.012 0.005 0.008 0.007 0.010 0.0 0.0 0.014 0 '17 0.034 0.069 0-024 SUBTOTAL 0.0 0.0 0.010 0.034 0.148 0.110 0.0 0.0 0.0 0.302 TOTAL HOURS OP VALID OBSERVATIONS TOTAL HOURS OP GROVND LEVEL RELEASE TOTAL HOURS OF STABILITY CLASS B

TOTAL HOURS OP GROUND LEVEL STABILITY CLASS B

2136.000 110.550 12.280 6.450 METEOROLOGICAL PACZLITY MET FACILITY LOCATED 1 3

KM ESE OF BROWNS FERRY NUCLE R

STABILITY BASED ON DELTA-T BETWEEN 10 '3 AND 45.30 METERS WIND DIRECTION MEASURED AT 10.42 METER LEVEL WIND SPEED MEASURED AT 10.42 METER LEVEL EPFLUENT VELOCITY = 12. 60 M/S NOTE:

TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROVNDED NUMBERS DATE PRINTED: 10/28/91 O 4 bS 00 ICl

'LA 06 9 0

0 M

the g

1O '0 h)t 0

STABILZTY CLASS C

(-1.7<

DELTA T< -1.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 1

OF 2

GROUND LEVEL RELEASE MODE JUL 1,

91 - SEP 30, 91 WIND DIRECTION CALM 6.6-6.6 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 N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW WNW NW NNW 0.0 0.0 0.0 0.0-0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.007 0.013 0.007 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.000 0.0 0.003 0.008 0.007 0.0 0.0 0.0 0.007 0.0 0.007 0.003 0.002 0.000 0.0 0.012 0.003 0.0 0.0 0.007 0.0 0.0 0.0 0.0 0.0 0.009 0.005 0.027 0.026 0.0 0.021 0.014 0.007 0.007 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0 '

0.016 0.030 0.0 0.009 0.0 0."0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.01Q 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Q.O 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.030 0.025 0.010 0.007 O.Q03 0.015 0.007 0.007 0.013 0.007 0.007 0.009 0.012 0.046 0.059 0.010 SUBTOTAL 0.0 0.0 0.027 0.038 0.088 0.096 0.019 0.0 0.0 0.267 TOTAL HOURS OF VALID OBSERVATIONS TOTAL HOURS OF GROUND LEVEL RELEASE TOTAL HOURS OF STABILZTY CLASS C

TOTAL HOURS OF GROUND LEVEL STABILITY CLASS C

2136.000 110. 550 35.2&0 5.710 METEOROLOGICAL FACILITY:

MET PACZLZTY LOCATED 1.3 KM ESE OF 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 EPPLUENT VELOCITY 12.60 M/S NOTE:

TOTALS AND SUBTOTALS ARE OBTAINED PROM UNROUNDED NUMBERS DATE PRINTED: 10/28/91 QU4 td C

QO l

'R lD QQ' MC>Q M(D 0 0

O Mg QO 'd hJQ 0

SPLIT JOZNT PERCENTAGE PREGUEHC WIND SPEED BY WIND DIRECTION POR STABILITY CLASS D

( 1.5<

DELTA T<~ 0.5 C/100 M)

BROWNS PERRY NUCLEAR PLANT PART 1

OF 2

GROUND LEVEL RELEASE MODE JVL 1,

91 SEP 30, 91 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 '2.5-18-4 18.5-24.4

>~24.5 TOTAL H

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NHW 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 o.a 0.0 0.0 0.0 0.0 0.0 a.o 0.0 0.0 0.0 0.0 0.004 0.0 0.002 0.0 0.002 0.0 0.0 0.0 0.0 0.001 0.0 0.0 0.007 0.030 0.047 0.067 0.085 0.006 0.005 0.010 0.0 0 '

0.0 0.009 O.Q18 0.009 0.011 0.007 0.015 0.087 0.0 0.007 0.030 0.008 0.041 0.035 0.018 0.000

0. 011 0.031 0.046 0.042 0.008 0.006 0.102 0.113 0.0 0.0 0.0 0.0 0.038 0.053 0.038 0.022 0.011 0.169 0.054 0.007 0.007 0.007 0.009 0.0 0.0 a.o 0.0 0.0 0.0 0.007 0.008 0.005 0.032 0.019 0.0 0.032 0 '

0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.031 0.0 0.0 0.0 0.0 0.0 Q.Q 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 o.a 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 o.a 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.228 0.118 0.091 0.027 0.021

0. 132 0.231 0.047 0.074 0.119 0.015 0.085 0.105 0.066 0.028 0.085 SUBTOTAL 0.0 0.008 0.258 0.308 0.512 0.306 0.082 0.0 0.0 1.474 TOTAL HOURS OP VAZZD OBSERVATIONS 2136.000 TOTAL HOURS OF GROUND LEVEL RELEASE 110. 550 TOTAL HOURS OF STABILITY CLASS D

1107.570 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS D

31.480 METEOROLOGICAL FACILITY:

MET FACILITY LOCATED 1.3 KM ESE OF BROWNS FERRY NVCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AHD 45.30 METERS WIND DIRECTION MEASURED AT 10.42 METER LEVEL WIND SPEED HEASURED AT 10.42 METER LEVEL EFFLUEHT VELOCITY I 12.60 M/S NOTE:

TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROVNDED NUMBERS DATE PRINTED: 10/28/91 OQ tb M I

V O 9 0

O M

M e

8 M 'O V'Z 0>A

N ERCEHTAGE RE UEN F

WZ D

S ED BY WIND DIRE TI N

STABILITY CLASS E

It 0

5<

DELTA T<m 1

~ 5 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 1

OF 2

GROUND LEVEL RELEASE MODE JVL 15 91 SEP 302 91 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 2=24.5 TOTAL N

NNE NE ENE E

ESE SE SSE S

SSW SW

"'SW W

WNW NW NHW SUBTOTAL 0.001 0.000 0.000 0.001 0.001 0.001 0.002 0.001 0.001 0.000 0.0 0.000 0.000 0.000 0.000 0.000 0.008 0.0 0.001 0.0 0.0 0.0 0.001 0.022 0.002 Q.015 o.oaa 0.0 0.002 0.0 0.0 0.0 0.0 0.044 0.030 0.015 0.011 0.028 0.029 0.038 0.054 0.039 a.049 0.0 0.0 0.005 0.006 0.000 0.001 0.013 0.318 0.122 0.094 0.031 0.055 0.091

0. 103 0.051 0.0 0.0 0.0 0.0 0.015 0.021 0.018 0.0 0.026 0.625 0.034 0.057 0.040 0.013 0.013 0.0 0.008 a.o 0.0 0.0.

0.0 0.006 0.005 0.012 0.012 0.027 0.226 0.038 0.0 0.0 0.0 0.00&

0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0, 0.049 0.096 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Q.Q a.o 0 ~ 0 0.0

'.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Q.a 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 a.o 0.0 0.0 0.0 0.0 0.225 0.167 0.082 0.096 0.141 0.143 0.137 0.042 0.065 0.000 0.0 0.028 0.032 0.030 0.014 0.115

l. 317 TOTAL HOURS OP VALID OBSERVATIONS 2136.000 TOTAL HOURS OP GROUND LEVEL RELEASE 110.550 TOTAL HOURS OP STABILITY CLASS E

731. 270 TOTAL HOURS OF GROUND LEVEL STABZIITY CLASS E

28.130 METEOROLOGZCAL FACILITY:

MET FACILITY LOCATED 1.3 KM ESE OP BROWNS FERRY NUCLEAR PLANT STABILITY'ASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS 5

WIND DIRECTION MEASVRED AT

10. 42 METER LEVEL WIND SPEED MEASVRED AT 10.42 METER LEVEL EFPLUENT VELOCITY ~ 12.60 M/S NOTE:

TOTALS AND SUBTOTALS ARE OBTAINED PROM UNROUNDED NUMBERS DATE PRINTED'0/28/91 4c 00 O M ICl fD M S 0 0

O M

9 M

5 0rt

SPLIT JOINT PERCENTAGE FRE()UEN F WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS F

(

1 5(

DELTA T<m 4.0 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 1

OF 2

GROUND LEVEL RELEASE MODE JUL 1,

91 SEP 30, 91 WIND DIRECTION CALM 0.6-1.4

1. 3-3..3 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. 001 0.000 0.000 Q.QQQ O.oao 0.000 0.000 0.000 0.000 0.0 0.0 0.0 0.0 0.0 0.0 0.000 0.0 0.0 O.OQ4 a.oo4 0.009 0.006

'0. 006

0. 00'7 0.006 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.066 O.Q40 a.o27 0.012 0.027 0.008 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Q ~ 021 Q.Q59 0.096 0.019 0.025 0.029 0.004 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Q.o o.o44 0.032 0.0 0.008 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.006 Q.Q 0.0 0.0 0.015 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 a.o 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 o.a 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Q.o o.a 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.157 0.136 0.058 0.041 o.a65 0.018 0.006 0.007 0.006 0.0 0.0 0.006 0.0 0.0 0.0 0.080 SUBTOTAL 0.003 0.041 0.200 0.275 0.061 0.0 0.0 0.0 0.0 0.580 TOTAI HOURS OF VALID OBSERVATIONS 2136. 000 TOTAL HOURS OF GROUND LEVEL REIEASE 110.550 TOTAL HOURS OP STABILITY CLASS P

188.290 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS F

12.390 METEOROLOGICAL FACILITY:

MET FACILITY LOCATED 1. 3 KM ESE OF BROWNS PERRY 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 3= 12 '0 M/S NOTE.

TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS DATE PRINTED: 10/28/91 00 tD M I

MKQ

~ tb CL 0

H All g

lO '0 0

SPLIT JOINT PERCENTAGE PREQVEN F WIND SPEED BY WIND DIRECTION POR STABILITY CLASS G

t DELTA T

> 4. 0 C/100 M)

BROWNS PERRY NUCLEAR PLANT PART 1

OF 2

GROUND LEVEL RELEASE MODE JUL 1,

91 - SEP 30, 91 WIND DIRECTION 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 0.001 0.002 0.000 0.002 0.000 0.,0 0.0 0.000 O.D 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.003 0.0 0.001 0.003 0.005 0.0 0.0 0.000 0.0 D.o 0.0 0.0 a.o 0.0 0.0 0.0 0.027 0.035 0.001 0.033 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.025 0.036 O.QQ7 0.007 0.011 0.0 0.002 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.008 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.009 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

.0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 a.o 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0'.o 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.057 0.081 0.019 0.045

0. 016 0.0 0.002 0.000 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 SUBTOTAL 0.005 0.013 0.096 0.088 0.008 0.009 0.0 0.0 0.0 0.220 TOTAL HOURS OF VALID OBSERVATIONS TOTAL HOURS OP GROUND LEVEL RELEASE TOTAL HOURS OF STABZIITY CLASS G

TOTAI HOURS OP GROUND LEVEL STABILITY CLASS G

2136.000 110.550 38.640 4.690 METEOROLOGICAL PACILITY:

MET FACILITY LOCATED 1.3 KM,ESE OP BRO STABILZTY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS OP BROWNS FERRY NVCIEAR PLANT WIND DIRECTION MEASURED AT 10.42 METER LEVEL WIND SPEED MEASURED AT 10.42 METER LEVEI.

EFFI.VENT VELOCITY ~ 12.60 M/S NOTE TOTALS AND SVBTOTALS ARE OBTAINED PROM UNROUNDED NVMBERS DATE PRINTED: 10/28/91 U W Cd C

00 O M I

P7 C>0 9 0

0 H

m~9 M'0 weQ h)i 0

SPLIT JOINT PERCENTAGE FREQUEN F WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS A

( DELTA T< -1. 9 Cf100 M)

BROWNS FERRY NUCLEAR PLAHT PART 2

OF 2

ELEVATED RELEASE MODE JUL li 91 SEP 30i 91 WIND DIRECTION

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 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Q.Q Q.a 0.0 0.0 0.0 0.0 0.0 0

~ 0 0.0 0.0 0 '

0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 o.a 0.0 0.0 0.0 0.0 0.=0 0.0 0 '

0 ~ 0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0 '

0.0 0.0 0.0 0.0 0.0 0.045 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 a.o 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 a.o 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0 ~ 0 0.0 0.0 Q.a 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 o.a 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 a.o 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 o.a 0.0 0.0 a.o45 0,0 0.0 0.0 SUBTOTAI 0.0 0.0 0.0 0.0 0.045 0.0 0.0 0.0 0.0 0.045 TOTAL HOURS OF VALID OBSERVATIONS TOTAL HOURS OF ELEVATED RELEASES TOTAL HOURS OF STABILITY CLASS A TOTAL HOURS OF ELEVATED STABIIZTY CLASS A 2136. 000 2025.449 22.670 0.970 I

METEOROLOGICAL FACILZTY:

MET FACZLITY LOCATED 1.3 KM ESE OF BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 45.30 AND 89.60 METERS WZND DIRECTION MEASURED AT 45.67 METER LEVEL WIND SPEED MEASURED AT 45.67 METER LEVEL EFFLUENT VELOCITY

12. 60 M/S NOTE:

TOTALS AND SUBTOTAIS ARE OBTAINED FROM UNROUNDED NUMBERS DATE PRINTED: 10/28/91

&W&

C M

lD Ml CL 0

0th~

g h)r 0

SPLIT JOINT PERCENTAGE FREQUEN P WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS B

( 1.9<

DELTA T<=

1 7 C/100 M)

BROWNS FERRY NVCLEAR PLANT PART 2

OF 2

ELEVATED RELEASE MODE JUL 1,

91 - SEP 30, 91 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 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 a.o 0.0 0.0 0.0 0.0 0.0 a.o 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.047 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.047 0.0 0.0 0.0 0.0 0.0 0.0 0.094 0.0 0;0 0.047 0.0 0.0 0.0 0.0 0.0 0.0 0.140 0.0 0.0 0.0 0.0 Q.O 0.0 0.045 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.045 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.041 0.0 0.0 0.041 0.0 0.0 0.0 0.0 I 0 0

0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 a.o 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0 ~ 0 0.0 0.0 O.Q 0.0 0.0 0.0 0.0 0.0 0.0 O.Q 0.0 0.0 0.0 0.0 0.0 0.0 0 '

0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0

0 0.1&5

~ 0.0 0.0 0.047 0'. 0 0.0 0.0 0.041 0.0 0.0

0. 273 TOTAL HOURS OP VALID OBSERVATIONS TOTAL HOVRS OP ELEVATED RELEASES TOTAL HOURS OF STABILITY CLASS B

TOTAL HOURS OF ELEVATED STABILITY CLASS B

2136.000 2025.449 12.280 5,830 METEOROLOGICAL FACILITY:

MET FACILITY LOCATED 1.3 KM ESE OP BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 45 '0 AND 89.60 METERS WIND DIRECTION MEASURED AT 45.67 METER LEVEL WIND SPEED MEASVRED AT 45.67 METER LEVEI EFFLUENT VELOCITY = 12.60 M/S NOTE:

TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS DATE PRINTED: 10/28/91 C4W 00 I

(D P

O 0

M phr 9

M d M~A

PERCENTAGE PRE UE F WIND SPEED BY WIND DIR STABILITY CLASS C

t-1-7<

DELTA T<m-1.5 C/100 M)

BROWNS FERRY HUCIEAR PLANT PART 2

OF 2

ELEVATED RELEASE MODE JUL 1,

91 SEP 30, 91 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 EHE E

ESE SE SSE S

SSW SW WSW WHW NW HNW SUBTOTAL 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0 ~ 0 0.0 0.0 0.0 0.0 0.0 0 ~ 0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.047 0.0 0.0 0.0 0.0 0.0 0.0 0.047 0.0 0.0 0.0 0.0 0.0 0.0

0. 281 0.047 0

0

~

0.047 0.140 0.0 0.0 0.0 0.0 0.0 Q. 515 0.0 0.0 0.0 0.0 0.046 0.0 0.228 0.046 0.0 0.046 0.0 0.092 0.0 0.0 0.0 0.0 0.459 0.0 0.0 0.0 0.0 0.0 0.0 0.043 0.082 0.0 0.043 0.0 0.0 0.0 0.081 0.0 0.0

'.249 0.076 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0:0 0.0 0.0 0.0 0.0 0.0 0.039 0.0 0.115 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Q.Q 0.0 0.0 0.0 Q.o a.o'.Q 0.0 0.0 Q.Q 0.0 0.0 O.a 0.0 o.a 0.0 o.a a.o 0.0 0.0 0.0 0.0 0.0 a.076 0.0 0.0 0.0 0.046 0.0 0.552 0.176 0.0 0.183 0.140 0.092 0.0 0.081 0.039 0.0 1.384 TOTAL HOURS OF VALID OBSERVATIONS TOTAL HOURS OF ELEVATED RELEASES TOTAI HOURS OF STABILITY CLASS C

TOTAL HOURS OF ELEVATED STABILITY CLASS C

2136.000 2025.449 35.280 29.570 METEOROLOGICAL FACILITY:

MET FACILITY LOCATED 1

~ 3 KM ESE OF BROWNS PERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 45.30 AND 89.60 METERS WIND DIRECTION MEASURED AT 45 ~ 67 METER IEVEL WIND SPEED MEASURED AT 45.67 METER IEVEL EFFLUENT VELOCITY ~ 12.60 M/S NOTE:

TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS DATE PRINTED: 10/28/91

%44 C

00 lD M I

lA U D>

lA lD D

0 Q

H th w 9 M 'U

< '4 0 h)t 0

SPLIT JOINT PERCENTAGE FREQUENCZ WIND SPEED BY WIND DIRECTION FOR STABILZTY CLASS D

(-1.5<

DELTA T<=-0.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 2

OF 2

ELEVATED REZEASE MODE JUL 1,

91 - SEP 30, 91 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 0.001 0.001 0.000 0.001 0.001 0.003 0.006 0.008 0.007 0.005 0.004 0.004 0.003 0.001 0.001 0.001 0.047 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.047 0.094 0.047 0.0 0.0 0.0 0.0 0.0 0.0 0.187 0.094 0.187 0.047 0.094 0.140 0.421 0.796 1.030 0.843 0.609 0.562 0.562 0.375 0.094 0.140 0.094 6.086 0.375 0.562 0.328 0.328 0.375 0.890 1.217 1.732 1.404 1.873 0.983 1.826 1.311 0.796 0.890 0.140 15.028 0.136 0.627 0.399 0.227 0.089 0.540 0.949 1.137 0.869, 0.910 0.322 1.138 1.672 1.853 0.996 0.364 12.228 1.495 1.640 0.458 0.162 0.209 0.654 1.184 0.991 0.951 0.411 0.500 0.420 0.497 1.049 1.759 0.288 12.668 0.880 0.802 0.038 0 '

0.0 0.039 1.186 0 ~ 151 0.116 0.0 0.0 0.0 0.0 0.115 0.154 0.539 4.021 0.0 0.0 0.015 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.099 0.114 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 2.981 3.820 1.285 0.811 0.814 2.547 5.339 5.096 4.283 3.854 2.371 3.949 3.857 3.906 3.941 1.525 50.378 TOTAL HOURS OP VALID OBSERVATIONS TOTAL HOURS OP ELEVATED RELEASES TOTAL HOURS OP STABILITY CLASS D

TOTAL HOURS OF ELEVATED STABILITY CLASS D

2136.000 2025.449 1107.570 1076.090 METEOROLOGICAL PACZLZTY:

MET FACILITY ZOCATED 1.3 KM ESE OF BROWNS FERRY NUCLEAR PZ,ANT STABILITY BASED ON DELTA-T BETWEEN 45.30 AND 89.60 METERS WIND DIRECTION MEASURED AT 45.67 METER LEVEL WIND SPEED MEASURED AT 45.67 METER LEVEL EFFLUENT VELOCITY Ie 12.60 M/S NOTE:

TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS DATE PRINTED: 10/28/91 4 4 tsar C

OQ (D M I

~am

~eo.

0 0

M Ph ~g

'C> 'd 0

STABILITY CLASS E

(-0. 5<

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

BROWNS FERRY NUCLEAR PLANT PART 2

OF 2

ELEVATED REIEASE MODE 0

JUL li 91 SEP 302 91 WIND DIRECTION 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 0.014 0.009 0.009 0.036 0.026 0.024 0.031 0.017 0.026 0.047 0.043 0.021 0.036 0.019 0.005 0.012 0.375 0 ~ 04'I 0.0 0.0 0.234 0.140 0.094 0.0 0.047 0.0 0.094 0.0 0.047 0.140 0.094 0.0 0.0 0.936 0.234 0.187 0.187 0.468 0.375 0.375 0.609 0.281 0.515 0.843 0.843 0.375 a.562 0.281 0.094 0.234 6.461

0. 515 0.421 0.562 0.609 0.468 0.890 0.936 0.702

'0. 562 0.655 0.843 0.562 0.749 0.328 0.375 0.421 9.597 0.362 0.409 0.227 0.270 0.633 1 ~ 129 0.408 0.320 0.402 Q.178 0 ~ 181 0.270 0.726 0.274 0.181 0.589 6.560 0.982 1.353 0.780 0.459 0.917 0.761 0.378 0.623 0.736 0.213 0.208 0.124 0.292 0.124 0.243 0.373 8.566 0.078 0.077 0.0 0.0 0.039 0.0 o.a 0.0 0.0 0.0 0.0 0.0 0.039-0.0 0.0 0.155 0.387 0.0 0.0 0.0 0.0 Q.O 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.037 0.037 0.0 0.0 Q.Q O.a 0.0 0.0 0.0 0.0 0.0 0.0 0-0 0.0 0.0 0.0 0.0 0.0 0.0 2.232 2.457 1.766 2.076 2.598 3.271 2.362 1.989 2.241 2.030 2.117 1.398 2.543 1

~ 120 0.897 1.821 32.918 TOTAL HOURS OF VALID OBSERVATIONS TOTAL HOURS OP ELEVATED RELEASES TOTAL HOURS OP STABZIITY CLASS E

TOTAL HOURS OF ELEVATED STABIIZTY CLASS E

2136.000 2025.449 731.270 703.140 METEOROLOGICAL FACZIITY:

MET PACILITY LOCATED 1. 3 KM ESE OP BROWNS PERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN

45. 30 AND

89. 60 METERS WIND DIRECTION MEASURED AT 45.67 METER I EVEL WIND SPEED MEASURED AT

45. 67 METER LEVEL EFFLUENT VEIOCZTY ~ 12. 60 M/6 NOTE TOTALS AND SUBTOTAIS ARE OBTAINED PROM UNROUNDED NUMBERS DATE PRINTED: 10/28/91 2U 4 4 CQ (D M I

'tJ2 (D 0 0

O g

W 2O Q w 0

SPLIT JOINT PERCENTAGE FREQUEN P WIND'PEED BY WIND DIRECTION FOR 0

STABILITY CLASS P

( 1. 56:

DELTA T<= 4. 0 C/100 M)

BROWNS PERRY NUCLEAR PIANT PART 2

OP 2

ELEVATED RELEASE MODE JUL 1,

91 SEP 30, 91 WIND DIRECTION CALM 0.6-1.6 1.5-3.4 WIND SPEED(MPH) 3.5-5 '

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

5SW SW WSW W

WNW NW NNW SUBTOTAL 0.013 0.0 0.003 0.0 0.007 0.0 0.003 0.047 0.0 0.0 0.003 0.0 0.007 0.'0 0.010 0.047 0.013 0.047 0.003 0.0 0.0

'.0 0.010 0.0 0.010 0.047 O.QQ3 0.0 0.0 0.0 0.007-0 '

0.094 0.187

0. 187 0.047 0.094 0.0 0.0 0.047 0.094 0.094 0.140 0.047 0.0 0.140 0.094 0.047 0.0 0.094 1.124 0.094 0.281 0.375 0.375 0.187 0.047 0.187 0.094 0.094 0.047 0.281 0.140 0.094 0.094 0 '

0.0 2.388 0.268 0.359 0.225 0.270 0.045 0.132 0.046 0.138 0.135 0.046 0.047 0.045 0.044 0.0 0.047 0.089 1.937 0.577

0. 452 0.538 Q.082 0.250 0.127 0.0 0.0 0.0 0.0 0.0 0.043 0.042 0.0 0.0 0.203

2. 312 0.039 0.117 0.038 0

~ 0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.194 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0..0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 O.Q 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

1. 178

1. 258 1.276 0.776 0.482

~ 0.356 0.333 0.382 0.430 0.143 0.328 0.379 0.329 0.144 0.047 0.392 8.235 TOTAL HOURS OP VAIID OBSERVATIONS TOTAL HOURS OF ELEVATED RELEASES TOTAL HOURS OF STABILITY CLASS P

TOTAL HOURS OF ELEVATED STABILITY CLASS P

2136.000 2025.449 188.290 175.900 METEOROLOGZCAI PACILITY:

MET PACZLZTY LOCATED 1.3 KM ESE OF BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 45.30 AND 89.60 METERS WIND DIRECTION MEASURED AT 45 '7 METER LEVEL WIND SPEED MEASURED AT 45.67 METER LEVEL EFFLUENT VELOCITY ~ 12.60 M/S NOTE:

TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS DATE PRINTED: 10/28/91 e 4 es C

00 I

CL O

0 Hg M 'O N 4) Ql0

SPLIT JOINT PERCENTAGE FREQUEN 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 li 91 SEP 30 i 91 WIND DIRECTION CAZ M 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 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 a.a 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

~ 0 ~ 0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.047 0 '

0.0 0.0 0.0 0.0 a.o 0.0 0.0'.0 0.0 0.0 0.0 0.094 0.0 0.047 0.047 0.0 0.0 0.047 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.089 0.133 0.134 0.089 0.045 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 a.o O.Q 0.045 0.124 0.159

0. 412 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0 '

0.0 0.0 Q.Q 0.0 0.039 0.038 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 o.a 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 a.o O.Q 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.213 O.425 0.584 0.136 0.139 O.Q 0.0 0.047 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.045 SUBTOTAL 0.0 0.0 0.047 0.234 0.537 0.694 0.077 a.o 0.0 1.589 TOTAZ HOURS OF VALID OBSERVATIONS TOTAL HOURS OF ELEVATED RELEASES TOTAL HOURS OF STABIIITY CLASS G

TOTAL HOURS OF ELEVATED STABILITY CLASS G

2136.000 2025.449 38.640 33.950 METEOROLOGICAL FACILITY:

MET FACILITY LOCATED 1.3 KM ESE OF BROWN STABILITY BASED ON DELTA-T BETWEEN 45.30 AND. 89.60 METERS OF BROWNS FERRY NUCLEAR PLANT WIND DIRECTION MEASURED AT 45.67 METER LEVEL WIND SPEED MEASURED AT 45.67 METER LEVEL EFFLUENT VELOCITY m 12.60 M/S NOTE:

TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS DATE PRINTED: 10/28/91 Q

OQ0 Y I

~O O.

0 QA I g

M'0

~ M Qs F4 w 0

JOINT PERCENTAGE FREQUENCIES ND SPEED BY WIND DIRECTION FOR STABZLITY CLASS A t DELTA T<=-1. 9 C/100 M)

BROWNS FERRY NUCLEAR PLANT JUL 1,

91 - SEP 30, 91 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 0.0 0.0 0.0 a.a 0.0 0.0 0.0 0 '

0.0 0.0

0. 0.

0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0 '

0.0 0 '

0.0 0.0 0.0 0.0 0.0 0.0 0 ~ 0 0.0 0.0 0.0 O.a 0.0 0.0 0,. 0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 O.Q 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 O.Q 0.0 0.046 0.0 0.0 a.a 0.046 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 O.Q 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Q.Q 0.0 0.0 0.0 0.0 0.0.

0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Q.O 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Q.046 0.0 0.0 0.0 0.046 TOTAL HOURS OF VALID STABILITY OBSERVATZONS TOTAL HOURS OF STABIZZTY CLASS A 2181 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS A TOTAL HOURS OF VALID WIND DZRECTZON-WIND SPEED<<STABILZTY OBSERVATIONS 2174 TOTAL HOURS CALM 0

METEOROLOGICAL FACILITY: MET FACILITY LOCATED 1.3 KM ESE OF BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON LAPSE RATE MEASURED BETWEEN 45.30 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT THE" 92.63 METER LEVEL MEAN WIND SPEED

=

6 ~ 7 MPH DATE PRINTED: 10/28/91 NOTE:

TOTALS AND SUBTOTALS ABOVE ARE OBTAINED FROM UNROUNDED NUMBERS IKI tD &

I WCIV (XI lb O

O 0

H M~g M'0 M '%O IV ~ 0

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

(-1-9< DELTA-T<~-1.7 C/100 M)

BROWNS FERRY NVCLEAR PLANT JUL 1,

91 - SEP 30, 91 WIND DIRECTION CALM 0.6-1.4 3.5-3.5 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 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Q.a 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 a.o 0.0 0.0 0.0 0.046 0.0 0.0 0.046 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 o.o46 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.046 0.046 0.0 0.0 0.0 0 '

0.0 0.0 0.046 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.046 Q.O 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 a.a 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Q.a a.o 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.046

0. 138 0.0 o.a 0.046 0.0 0.0 0.0 0.046 0.046 0.0 SUBTOTAL 0.0 0.0 0.0 0.092 3

0.046 0.138 0.046 0.0 0.0 0.322 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2181 TOTAL HOVRS OF STABILITY CLASS B

7 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS B

7 TOTAL HOURS OP VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2174 TOTAL HOVRS CALM 0

METEOROLOGICAL PACILITY: MET FACILITY LOCATED 1.3 KM ESE OF BROWNS PERRY NUCLEAR PLANT STABILITY BASED ON LAPSE RATE MEASURED BETWEEN 45.30 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT THE 92.63 METER LEVEL DATE PRINTED: 10/28/91 MEAN WIND SPEED

~

8.3 MPH NOTE:

TOTALS AND SUBTOTALS ABOVE ARE OBTAINED FROM UNROUNDED NUMBERS C

OQ I

ID M

~as I

~Q a.

O 0

M 3

8 3O 'O t43 0

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

(-1.7< DELTA-T<~-1.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT JUL 1,

91 SEP 30, 91 WIND DIRECTION CALM 6.6-2.4 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 2=24.6 TOTAL N

NNE NE ENE E

ESE SE SSE S

SEW SW WSW W

WNW NW NNW SUBTOTAL 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 o.a 0.0 0.0 0.0 0.0 0.0 0.0 0 '

0.0 0.046 0.0 0.0 0.0 0.046 0.0 0.0 0.0 0.0 0.0 0.092 0.0 0.0 0.0 0.0 0.0 0.046 0.0 0.0 0.0 0.0 0.092 0.092 0.0 0.0 0.0 0.0 0.230 a.o 0.0 0.0 0.0 0.046 0.138 0.138 0.046 0.0 o.o46 0.0 0.092 0.0 0.0 0.0 0.0

0. 506 0.0 0.0 0.0 0.0 0.0 0.0 0.230 0.046 0.0 0.046 0.0 0.0 0.0 0.092 0.0 0.0

0. 414 0.092 0.0 0.0 0.0 0.0 0.0 0.0 0.046 0.0 0.0 0.0 0.0 0.0 0.0 0.046 0.0 0.184 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 a.o 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.092 0.0 0.0 0.0 0.046 0.184 0.414 0.138 0.0 0.092 0.138 0.184 0.0 0.092 0.046 0.0 1.426 TOTAL HOURS TOTAL HOURS TOTAL HOURS TOTAL HOURS TOTAL HOURS OF VALID STABILITY OBSERVATIONS OF STABILITY CLASS C

OF VALID WIND DIRECTZON-WIND SPEED-STABILITY CLASS C

OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS CALM 2181 31 31 2174 0

4 S

B METEOROLOGICAL FACILITY: MET FACZLZTY LOCATED 1.3 KM ESE OF BR WN TABZLITY BASED ON LAPSE RATE MEASURED BETWEEN 45'0 AND 89.59 METERS ROWNS FERRY NUCLEAR PLANT WIND SPEED AND DIRECTION MEASURED AT THE 92

~ 63 METER LEVEL DATE PRINTED. 10/28/91 MEAN WIND SPEED 8.2 MPH NOTE:

TOTALS AND SUBTOTALS ABOVE ARE OBTAINED FROM UNROUNDED NUMBERS W W Cd Qs 4 00 lD M I

o a20 0

g AC2 '0 V Cl N

2 0

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

(-1. 5(

DEZ TA-T(55-0. 5 C/100 M)

BROWNS FERRY NUCLEAR PLANT JUL 1,

91 SEP 30, 91 WIND DIRECTION 0.6-1.4 1.5-3.4 WIND SPEED(MPH) 3

~ 5-5.4 5.5-7.4 7.5-12.4 12.5-1&.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 0.001 Q.QQQ 0 ~ 000 0.000 0.003 0.006 0.009 0.006 o.ao5 0.004 0.004 0.003 0.002 0.001 Q.aal 0.046 0.0 0.0 0.0 0.046 0.0 0.0 0 ~ 046 0.092 Q.a46 0.0 0.046 0.0 0.0 0.0 0.0 0.0 0.276 0.046 0.138 0.046 0.0 0.046 0.322 0.598 0.874 0 '44 0.552 0.368 0.460 0.368 0.184 0.092 0.092 4.830 0.184 0.322 0.230 0.. 276 0.092 0.414 1.380 a.69o 0.782 0.782 0.828 1.748 1.242 0.782 0.598 0.046 10.396 0.368 0.598 0.184 0.092 0.092 0.598 0.644 0.874 0.828 1.012 0.368 0.598 1.932 1.610 0.920 0.276 10.994 1.196 1.702 0.552 0.322 0.276 1.242 1.196 1.012 1.150 1.058 0.414 0.966 1.472 1.748 1.886 0.414 16.605 1.518 1.288 0 ~ 138 0.092 0.046 0.414 1.334 0.276 0.230 0.460 0 ~ 276 0.092 0.184 0.184 0.230 0.782 7.544 0.368 0.0 0.0 0.0 0.0 0.138 1.104 0.046 0.0 0.0 a.o 0.0 0.0 0.046 0.046 0.046 1.794 0.0 0.0 0.0 0.046 0.0 0.0 0.046 0.0 0.0 Q.Q 0.0 0.0 0.0 0.0 0.0 0.046 0.138 3.680 4.O49 1.150

.0.874 0.552 3.131 6.354 3.873 3.686 3.869 2.304 3.868 5.201 4.555 3.773 1.703 52.622 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2181 TOTAL HOURS OF STABILITY CLASS D

1147 TOTAZ HOURS OF VALID WIND DIRECTION-WZND SPEED-STABILITY CLASS D

1144 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILZTY OBSERVATIONS 2174 TOTAL HOURS CALM 1

METEOROLOGICAL FACILITY: MET FACILITY LOCATED 1

~ 3 KM ESE OF BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON ZAPSE RATE MEASURED BETWEEN 45 30 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT THE 92.63 METER LEVEL MEAN WIND SPEED

~

8.4 MPH DATE PRINTED: 10/28/91 NOTE: TOTALS AND SUBTOTALS ABOVE ARE OBTAINED FROM UNROUNDED NUMBERS 5U 4 P 00 (D Y

~O3 A

O 0Hl W g 3C3 'U tO w 0

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

(

0.5<

DELTA-T<55 1.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT JUL 1,

91 SEP 30, 91 WIND DIRECTION CALM 5.6-1.4 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

>=24.5 TOTAL N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW SUBTOTAL 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Q.Q 0.046 0.092 0.0

'.046 0.046 0.0 0.0 0.092 0.0 0.0 0.0 0.046 0.0 0.046 0.0 0.414 a.a92 0.092 0.092 0.046 0.230 0.184 0.322 0.414 0.276 0.414 0.322 0.322 0.184 0.276 0.322 0.138 3.726 0.184 0.092 0.368 0.506 0.230 0.552 0.414 0.598 0.414 0.506 0.276 0.5Q6 0.644 0.782 0.230 0.046 6.348 0.138

0. 184 0.506 0.368 0.276 0.598 0.828 0.552 0.552 0.276 0.506 0.552 0.460 0.506 0.138 0.184 6.624 0.644

0. 828 0.506 0.230 0.920 1.242

1. 564

0. 736

0. 552 0.368 0.598 0.322 0.736 0.644 0.322 0.506 10.718

1. 012

l. 196 0.552 0.092 0.368 0.230 0.690 0.322

0. 64'4 0.230 0.322 0.276 0.230 0.0 0.276 0.460 6.900 0.092 0.092 0.046 0.0 Q.Q 0.0 0.0.

0.0 0.0 0.0 0.0 0.0 0.0 0.0" 0.0 0.138 0.368 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 2.162 2.530 2.162 1.242 2.070 2.852 3.818 2.622 2.530 1.794 2.024 1.978 2.300 2.208 1.334 1.472 35.096 TOTAL HOURS TOTAL HOURS TOTAL HOURS TOTAL HOURS TOTAL HOURS OF VALID STABILITY OBSERVATIONS OF STABILITY CLASS E

OF VAIZD WIND DIRECTION-WIND SPEED-STABILITY CLASS E

OF VALID WIND DIRECTION-WIND SPEED-STABZLITY OBSERVATIONS CALM 2181 767 763 2174 0

METEOROLOGICAL FACZLITY: MET FACILITY LOCATED 1.3 KM ESE OF BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON LAPSE RATE MEASURED BETWEEN 45.30 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT THE 92.63 METER LEVEL DATE PRINTED: 10/28/91 MEAN WIND SPEED

~

8.3 MPH NOTE:

TOTALS AND SUBTOTALS ABOVE ARE OBTAINED FROM UNROUNDED NUMBERS 00 tD MI

~am M Q3 C3 n

0 g

'C) '0

$0 h)

~

0

JOINT PERCENTAGE FREQUENCIES ND SPEED BY WIND DIRECTION FOR STABILZTY CLASS F

( 1.5<

DEI.TA-T<

4.0 C/100 M)

BROWNS FERRY NUCLEAR PLANT JUL li 91 SEP 30'1 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 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Q.o 0.0 0.046 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 o.a 0.046 0.046 0.046 0.230 0.046 0.0 0.046 0.092 0.046 0.046 0.046 0.046 0.184 0.046 0.0 0.0 0.138 0.0 0.138 0.092 0.046 0.0 0.046 0.046 0.0 0.046 0.138 0.046 0.046 0.0 0.046 0.138 0.230 0.092 0.230 0.138 0.092 0.092 0.046 0.0 0.0 0.138 0.184 0.184 0.046 0.046 0.184 0.414 0.460 0.322 0.322 0.276 0.138 0.322 0.230 0.0 0.092 0.0 0.0 0.046 0.0 0.046 0.368 0.460 0.276 0.230 0.0 0.092 Q.Q 0.0 0.046 0.0 0.138 0.046 0.046 0.0 0.046 0.230 0.092 0.322 a.o46 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.690 1.334 1.196 0.736 0.736 0.828 0.322 0.414 0.414 0.138 0.276 0.276 0.414 0.322 0.322 0 '68 SUBTOTAL 0.0 0.046 0.966 0.782 1.702 2.852 1.978 0.460 0.0 8.786 TOTAL HOURS OF VALID STABILITY OBSERVATIONS TOTAL HOURS OP STABILITY CLASS F TOTAL HOURS OF VALZD WIND DIRECTION-WZND SPEED-STABII ITY CLASS F

TOTAL HOURS OF VALID WIND DIRECTZON-WIND SPEED-STABILITY OBSERVATIONS TOTAL HOURS CALM 2181 191 191 2174 0"

METEOROLOGICAL FACILITY: MET FACILITY LOCATED 1.3 KM ESE OF BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON LAPSE RATE MEASURED BETWEEN 45.30 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT THE 92.63 METER LEVEL MEAN WIND SPEED

~

9.7 MPH NOTE:

TOTALS AND SUBTOTALS ABOVE ARE OBTAINED FROM UNROUNDED NUMBERS DATE PRINTED 10/2&/91

'&WC' 00 I

0 M

.)

Pcl

~NP)

~e p.

O 0

M the g

W '0 Ql h)r 0

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

(DELTA T 4

0 C/100 M]

BROWNS PERRY NUCLEAR PLAHT JUL 1,

91 SEP 30, 91 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 0.0 0.0 0.0 0.0 0.0 0.0 0.0 O.Q 0.0 0.0 0.0 0.0 0.0

0. 0-0.0 0.0 0.0 O.Q 0.0 0.0 0.0 0.0 0.0 0.0 a.o 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Q.a 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 O.Q 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 o.a 0.0 0.0 0.0 0.0 0.0 0.0 0.046 0.0 0.046 0.046 0.046 0.092 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.276 0.0 0.0 0.138 0.138 0.276 0.0 0 '

0.046 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.598 0.092 0.138 0.184 0.092 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.046 0.552 0.0 0.138 0.046 0.092 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 O.Q 0.0 0.0 0.0 0.276 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 a.o 0.0 0.0 0.0 0.0 0.092 0.322 0.368 0.368 0.322 0.046 0.092 0.046 0.0 0.0 0.0 0.0 0.0 0.0 0.0 o.o46 1.702 TOTAZ HOURS OF VALID STABILITY OBSERVATIONS 2181 TOTAL HOURS OF STABILITY CLASS G

37 TOTAL HOURS OF VALID WIND DIRECTZON-WIND SPEED-STABILITY CLASS G

37 TOTAL HOURS OP VALID WIND DIRECTION-WIHD SPEED-STABILITY OBSERVATIONS 2174 TOTAL HOURS CALM 0

METEOROLOGICAL FACILITY: HET FACILITY LOCATED 1.3 KM ESE OF BROWNS FERRY NVCLEAR PLANT STABILITY BASED ON LAPSE RATE MEASURED BETWEEN 45.30 AND 89.59 METERS WIND SPEED AND DIRECTION MEASVRED AT THE 92.63 METER LEVEL MEAN WIND SPEED

~

12.2 MPH DATE PRINTED 1Q/28/91 NOTE:

TOTALS AND SUBTOTALS ABOVE ARE OBTAINED PROM VNROUNDED NUMBERS M W VS C

(A tD MI 4MtD 9 O

0 H

Ph w g N

r 0rt

JOINT PERCENTAGE FREQUENCIES SPEED BY WIND DIRECTION FOR STABILITY CLASS A

{DELTA T<~-1. 9 C/100 M)

BROWNS FERRY NUCLEAR PLANT OCT 1,

91 DEC 31, 91 WIND DIRECTION 0.6-1.4 1.5-3.4'IND 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 0.0 0 '

0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.232 0.418 0.418 0.046 0.0 0.0 0.0 0.0 0.0 0.0 1.116 0.0 0.0 0.0 0.046 0.0 0.093 1.534 0.604 0.372 0.046 0.046 0.093 0.046 0.0 0.0 0.0 2.882 0.093 0.046 0.0 0.0 0.0 0.186 0.232 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.046 0.046 0.651 0.558 0.279 0.0 0.0 0.0 0.046 0.046 0.0 0.0 0.0 0.0 0.0 0.046 0.046 0 '

0.093 1.116 0.093 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.046 0.046 0.0 0.186 0.372 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.744 0.325 0.0 0.046 0.0 0.325 2.046 1.023 0.790 0.093 0.046 0.093 0.139 0.093 0.046 0.325 6.137 TOTAL HOURS OF VALID STABZLZTY OBSERVATIONS TOTAL HOURS OF STABILITY CLASS A TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS A TOTAZ HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS TOTAL HOURS CALM 2183 133 132 2151 0

METEOROLOGICAL FACZLITY: MET FACILITY LOCATED 1.3 KM ESE OF BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON LAPSE RATE MEASURED BETWEEN 10.03 AND 45.30 METERS WZND SPEED AND DIRECTION MEASURED AT THE 10.42 METER LEVEL MEAN WIND SPEED

~

5.7 MPH DATE PRZNTED: 01/2 2/9 2 NOTE:

TOTALS AND SUBTOTALS ABOVE ARE OBTAINED FROM UNROUNDED NUMBERS C

N V R (D

C I

mWQ M(D D O

0 M

g M'd

'4 4)

Q) h)r 0

STABILITY CLASS B

t-1.9< DELTA-T<~-1.7 C/100 M)

BROWNS FERRY NUCLEAR PLANT OCT 1,

91 - DEC 31, 91 WZND DIRECTION 0.6-1.4 1.5-3.4'IND SPEED(MPH) 3.5-5.4 5.5-7.4 7.5-12.4 '2.5-18.4 18.5-24.4

>=24.5 TOTAL N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW SUBTOTAL 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0 '

0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0.

0.0 0.0 0.0 0.0 0.0 0.0 0.046 0.0 0.0 0.0 0.0 0.046 0.0 0.0 0.0 0.0 0.0 0.046 0.325 0.325 0.093 0.093 0.046 0.0 0.046 0.0 0.0 0.0 0.976 0.046 0.046 0.0 0.046 0.0 0.139 0.186 0.186 0.139 0.093

0. 186 0.046 0.0 0.046 0.0 0.0 1.162 0.093 0.0 0.046 0.0 0.0 0.0 0.093 0.0 0.0 0.0 0.0 0.0 0.046

0. 186 0.046 0.0 0.511 i 0.418 0.093 0.0 0.0 0.0 0.0 0.046 0.0 0.0 0.0 0.0 0.0 0.279 0.046 0.465 0.232 1.581 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.093 0.093 o.o46 0.0 0.232 0.0 0.'0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

~

0.0 0.0-0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.558 0.139 0.046 0.046 0.0 0.186 0.651 0.511 0.232 0.186 0.232 0.093 0.465 0.372 0.558 0.232 4.510 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2183 TOTAL HOURS OF STABILITY CLASS B

97 TOTAL HOURS OF VALID WIND DZRECTION-WIND SPEED-STABILITY CLASS B

97 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBS RVATZONS 2151 TOTAL HOURS CALM 0

METEOROLOGICAL FACILITY: MET FACZLITY LOCATED 1.3 KM ESE OF BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON LAPSE RATE MEASURED BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT THE 10.42 METER LEVEL DATE PRINTED: 01/22/92 MEAN WIND SPEED

~

6.5 MPH NOTE:

TOTALS AND SUBTOTALS ABOVE ARE OBTAINED FROM UNROUNDED NUMBERS 00 I

~ac

~

(D Ct A

0 Hg M'd N r 0

0 JOINT PERCENTAGE FREQUENCIES 0

D SPEED BY WIND DZRECTZON FOR 0

STABZLITY CLASS C

(-1. 7< DELTA-T<~-1.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT OCT 1,

91 DEC 31, 91 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 SUBTOTAL 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.046 0.186 0.325 0.139 0.046 0.0 0.0 0.0 0.0 0.0 0.0 0.744 0.0 0.046 0.0 0.0 0.0 0.186 0.186 0.186 0.046 0.046 0.139 0.093 0.046 0.046 0.046 0.0 1.069 0.046 0.093 0.0 0.046 0.046 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.093 0.139 0.139 0.046 0.651 0.139 0.046 0.0 0.0 0.0 0.046 0.0 0.0 0.0 0.0 0.0 0.0 0.046 0.325 0.232 0.093 0.930 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.046 0.0 0.046 0.0 0.093 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.186 0.186 0.0 0.046 0.046 0.279 0.372

0. 511 0.186 0.093 0.139 0.093 0.232 0.511 0.465 0.139 3.487 TOTAL HOURS OP VALID STABZI ITY OBSERVATZONS 2183 TOTAL HOURS OP STABILITY CLASS C

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

75 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABZI ITY OBS RVATIONS 2151 TOTAL HOURS CALM 0

METEOROI.OGICAL PACILITY: MET FACILITY LOCATED 1. 3 KM ESE OP BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON LAPSE RATE MEASURED BETWEEN 10.03 AND 45 '0 METERS WIND SPEED AND DIRECTION MEASURED AT THE 10.42 METER LEVEL MEAN WIND SPEED

~

5.8 MPH DATE PRINTED: 01/22/92 NOTE: TOTALS AND SUBTOTALS ABOVE ARE OBTAINED PROM UNROUNDED NUMBERS C4W 00 I

tD M I

~a v w en 0

M g

M 'U

'4%

D)

M A

0

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

(-1 ~ 5< DELTA-T<~-0. 5 C/100 M)

BROWNS PERRY NUCLEAR PLANT OCT 1,

91 DEC 31, 91 0

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 HW NNW SVBTOTAL 0.004 0.004 0 '05 0.008 0.010 0.021 0.023 0.027 0.006 0.006 0.007 0.005 0.004 0.004 0.003 0.003 0.139 0.0 0.046 0.046 0.046 0.139 0.0 0.186 0.139 0.046 0.046 0.186 0.0 0.0 0.046 0.0 0.0 0.930 0.186 0.139 0.232 0.372 0.372 1.116 1.023 1.302 0.279 0.279 0.186 0.279

0. 186 0.186 0.139

0. 139 6.416 0.558 0.139 0.511 0.465 0.604 0.837 0.651 0.651 0.232 0.093 0.139 0.139 0.372 0.279 0.279 0.418 6.369 0.418 0.279 0.325 0.418 0.139 0.139 0.232 0.0 0.046 0.046 0.0 0.232 0.790 0.139 0.232 0.604 4.045 1.069 0.604 0.186 0.0 0.0 0.046 0.511 0.0 0.0 0.0 0.0 0.186 0.976 0.883 1.302 1.302 7.066 0.046 0.0 0.0 0.0 0.0 0.0

, 0.0 0.0 0.0 0.0 0.0 0.0 0.139 0.744 1.116 0.372

2. 417 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0'0.0 0.0 0.0 0.0 0.0 0.139 0.0 0.139 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 2.282 1.212 1.307

1. 310 1.265 2.160 2.626 2.119

0. 611 0.471

0. 518 0.842 2.467 2.282 3.210 2.839 27.522 TOTAl HOURS OP VALID STABZLITY OBSERVATIONS 2183 TOTAl HOVRS OP STABILITY CLASS D

593 TOTAL HOURS OF VALID WIND DZRECTZON-WIND SPEED-STABILITY CLASS D

592 TOTAL HOURS OF VALID WIND DIRECTZON-WZND SPEED-STABILITY OBSERVATIONS 2151 TOTAL HOURS CALM 3

METEOROlOGICAL PACZLZTY: MET FACILITY LOCATED 1.3 KM ESE OP BROWNS FERRY NUCI,EAR PLANT STABILITY BASED ON LAPSE RATE MEASURED BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT THE 10.42 METER LEVEL DATE PRINTED: 01/22/92 MEAN WIND SPEED

~

6.4 MPH NOTE:

TOTALS AND SUBTOTALS ABOVE ARE OBTAINED PROM UNROVNDED NUMBERS

'U 4 00 ID M I

~am Ooe a.

0 0

g W 'O

'V %

h)r 0

JOINT PERCENTAGE FREQUENCIES 0

SPEED BY WIND DIRECTION FOR STABILITY CLASS E

t-0.5<

DELTA-T<~ 1.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT OCT 1,

91 DEC 31, 91 WIND DIRECTION CALM 0. 6-1. '4 1.5-3.4 WIND SPEED(MPH) 3.5-5.4 5.5-7.4 7.5-12.4'2.5-18.4 18.5-24.4

>=24.5 TOTAL N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW SUBTOTAL 0.030 0.033 0.013 0.033 0.053 0.126 0.124 0.111 0.066 0.013 0.015 0.020 0.013 0.010 0.015 0.023 0.697 0.093 0.186 0.0 0.093 0.0 0.604

0. 418 0.418 0.232 0.046 0.093 0.0 0.046 0.093 0.093 0.093 2.510 0.465 0.418 0.232 0.511 0.976 1.720 1.860 1.627 0.976 0.186 0.186 0.372 0.186 0.093 0.186 0.325 10.321 0.930 0.511 0.418 0.186 0.465 1.767 2.092 1.674 0.465 0.186 0.0 0.046 0.093 0.139 0.372 0.790 10.135 0.604 0.558 0.325 0.0 0.093 0.279

0. 511 0.232 0.325 0.0 0.046 0.093

0. 139 0.046 0.372 0.790

4. 417 0.139 0.232 0.139 0.0 0.0 0.0 0.093 0.093 0.232 0.0 0.046 0.046 0.0 0.0 0.186 0.186 1.395 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.046 0.046 0.093 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 2.262 1.939 1.128 0.823 1.587 4.496 5.098 4.156 2.297

0. 431 0.387 0.578 0.478 0.382 1.270 2.254 29.568 TOTAL HOURS OF VALID STABILITY OBSERVATZONS 2183 TOTAL HOURS OF STABILITY CLASS E

645 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABIIZTY CLASS E

636 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2151 TOTAL HOURS CALM 15 METEOROLOGICAL FACILITY: MET FACILITY LOCATED 1.3 KM ESE OF BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON LAPSE RATE MEASURED BETWEEN 10-03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT THE 10 '2 METER LEVEL DATE PRINTED: 01/22/92 MEAN WIND SPEED

~

3.8 MPH NOTE:

TOTALS AND SUBTOTALS ABOVE ARE OBTAINED FROM UNROUNDED NUMBERS C4g Q

C 00

~

tD M I

~et P>

~e a.

O 0

H th ~ g M 'O h) ~ 0

JOINT PERCENTAGE FREQUENCIES SPEED BY WIND DIRECTION FOR STABILITY CLASS F

( 1. 5<

DELTA-T<~ 4. 0 C/100 M)

BROWNS FERRY NUCLEAR PLANT OCT 1,

91 DEC 31, 91 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

)a24.5 TOTAL N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW HNW SUBTOTAL 0.035 0.015 0.013 0.025 0.075 0.090

0. 110 0.063 0.018 0.0 0.005 0.005 0.008 0.003 0.013 0.035

0. 511 0.093 0.093 0.046 0.186 0.139 0.186 0.651 0.372 0.093 0.0 0.046 0.0 0.046 0.0 0.093 0.046 2.092 0.558 0.186 0.186 0 F 279

l. 255 1.488 1.395 0.790 0.232 0.0 0.046 0.093 0.093 0.046 0.139 0.604 7.392 0.837

0. 651 0.139 0.372 0.744 0.046 0.511 0.558 0.651 0.0 0.0 0.0 0.0 0.0 0.093 0.604 5.207 0.325 0.372 0.0 0.093 0.0 0.0 0.0

0. 186 0.511 0.0 0.0 0.0 0.0 0.0 0.0 0.651 2.139 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.093 0.604 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.697 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0

~ 0 0.0 0 ~ 0, 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

,0. 0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.848 1.317 0.384 0.955 2.214

1. 810 2.667 2.062

2. 110 0.0 0.098 0.098 0.147 0.049 0.338 1.941 18.038 TOTAL HOURS OP VALZD STABILITY OBSERVATIONS TOTAL HOURS OF STABILITY CLASS F

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

TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS TOTAL HOURS CALM 2183 395 388 2151 11 METEOROLOGICAL PACZLITY: MET PACII ZTY LOCATED 1. 3 KM ESE OF BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON LAPSE RATE MEASURED BETWEEN 10.03 AND 45.30 METERS WZND SPEED AND DIRECTION MEASURED AT THE 10.42 METER LEVEL MEAN WIND SPEED

~

3.5 HPH DATE PRINTED: 01/22/92 NOTE:

TOTALS AND SUBTOTALS ABOVE ARE OBTAINED PROM UNROUNDED NUMBERS Dl C 00 I

Q M I

~ a ro O(D C

0 0

g

'Cl 'O 0

JOINT PERCENTAGE FREQUENCIES D SPEED BY WZND DIRECTION FOR STABILITY CLASS G

tDELTA T

> 4.0 C/100 M)

BROWNS FERRY NUCLEAR PLANT OCT 1,

91 -

DEC 31, 91 WIND DIRECTION CALM 0.6-1.4 1.5-3.4 WIND SPEEDtHPH) 3 '-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 0.239 0.258 0.105 0.182 0.096 0.029 0.096 0.296 0.019

0. 010 0.0 0.0 0.0 0.010 0.0 0.057 1.395 0.279

0. 418 0.372 0.139 0.232 0.046 0.093 0.511 0.046 0.046 0.0 0.0 0.0 0.046 0.0 0.093 2.324 0.883 0.837 0.139 0.744 0.232 0.093 0.372 0.930 0.046 0.0 0.0 0.0 0.0 0.0 0.0 0.186 4.463

0. 511 0.930 0.0 0.0 0.093 0.0 0.186 0.279 0.0 0.0 0.0 0.0 0.0 0.0 0.0.

0.325 2.324 0.046 0.0 0.093 0.0 0.0 0.0 0.0 0.046 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.046 0.232 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

~

0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.959 2.443 0.709 1.065 0.653 0.168 0.746 2.063 0.112 0.056 0.0 0.0 0.0 0.056 0.0

0. 708 10.739 TOTAL HOURS OF VALID STABILITY OBSERVATIONS TOTAZ, 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 2183 244 231 2151 30 METEOROLOGICAL FACILITY:. MET FACILITY lOCATED 1.3 KM ESE OF BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON LAPSE RATE MEASURED BETWEEN 10.03 AND 45;30 METERS WIND SPEED AND DIRECTION MEASURED AT THE 10.42 METER LEVEL MEAN WIND SPEED

~

2.3 MPH DATE PRINTED: 01/22/92 NOTE TOTAlS AND SUBTOTALS ABOVE ARE OBTAINED FROM UNROUNDED NUMBERS 00 l

(D M I

Ln Ct Q

~

(D CL 0

0th w g IO w 0

0 SPLIT JOINT PERCENTAGE FREQVENC WIND SPEED BY WIND 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,

91 -

DEC 31, 91 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 HNW 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0 ~ 0 0.0 0.0 0.0 0.0 0.0 0.0 0.021 0.024 0.001 0.0 0.0 0.0 0.0 0.0 0 '

0.0 0.0 0.0 0.0 0.0 0.007 0.074 0.085 0.040 0.003 0.001

,0.0 0.002 0 '0.0 0.0 0.009 0.005 0.0 0 '

0.0 0.018 0.040 0 '

0.0 0.0 0.0 0.0 0.0 0.0 0.005 0.003 0.081 0.039 0.0 0.0 0.0 0.007 0.009 0.0 0.0 0.0 0.0 0.0 0 '07 0.007 0.0

0. 013 0,0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.014 0.018 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.090 0.043 0.0 0.0 0.0 0.032 0.123

0. 106 0.065 0.004 0.001 0.0 0.023 0.025 0.005 0.016 SVBTOTAI 0.0 0.0 0.047 0.212 0.080 0.163

0. 031 0.0 0.0 0.533 TOTAL HOURS OF VALID OBSERVATZONS 2103.000 TOTAL HOURS OP GROUND LEVEL RELEASE 230.430 TOTAl HOURS OP STABILITY CLASS A

11. 210 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS A 11.210 METEOROLOGICAL FACILITY:

MET FACILITY LOCATED 1.3 KM ESE OF BROWNS FERRY NUCLEAR PLANT STABZLZTY BASED OH DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND DZRECTZOH MEASURED AT 10 '2 METER I,EVEL WIND SPEED MEASURED AT 10 '2 METER LEVEZ EPPLUENT VELOCITY ~ 12.60 M/S II NOTE:

TOTALS AND SVBTOTALS ARE OBTAINED PROM UNROUNDED NUMBERS DATE PRINTED: 01/22/92 C

OQ I

Vl N Q M lD CL 0

0Awg M 'U N Cl Ql0

P I CE TAGE FREQUE WZN PEE BY STABILITY CLASS B

(-1.9<

DELTA T<~-1.7 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 1

OF 2

GROUND LEVEL RELEASE MODE OCT 1,

91 DEC 31, 91 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

)=24.5 TOTAL N

NNE NE ENE E

ESE SE SSE S

.SSW SW WSW W

WNW NW NNW SUBTOTAL 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0 ~ 0 0.0 0.0 0.0 0.0 0.012 0.005 0.0 0.005 0.0 0.0 0.0 0.0 0.0 0.022 0.000 0.001 0.0 0.0 0.0 0.006 0.015 0.0 0.019 0.0 0.0 0.006 0.0 0.0 0.0 0.0 0.048 0.005 0.0 0.003 0.0 0.0 0.0 0.006 0.0 0.0 0.0 0.0 0.0 0.005 0.014 0.005 0.0 0.039 0.044

0. 014 0.0 0.0 0.0 0.0 0.010 0.0 0.0 0.0 0.0 0.0 0.048 0.007 0.068 0.030 0.221 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.021 0.028 0.009 0.0 0.058 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

0. 050

0. 015 0.003 0.0 0.0 0.006 0.031 0.012 0.024 0.0 0.005 0.006 0.074 0.049 0.081 0.030 0.387 TOTAL HOURS OP VALID OBSERVATZONS 2103. 000 TOTAL HOURS OP GROUND LEVEL RELEASE 230 '30 TOTAL HOURS OP STABILITY CLASS B

11.960 TOTAL HOURS OP GROUND LEVEL STABZLITY CLASS B

8.130 METEOROLOGICAL PACZLITY:

MET PACILZTY LOCATED 1.3 KM ESE OF BROWNS PERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND DIRECTION MEASURED AT 10.42 METER JEVEL WIND SPEED MEASURED AT 10.42 METER LEVEL EFPLUENT VELOCITY ~ 12.60 M/S NOTE'OTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS DATE PRINTED: 01/22/92 C4 tlat C

00 k

lD &

I

'LA H f0 4P (D

CL O

0, g

M'0 t4 ~ 0

SPLIT JOINT PERCENTAGE FREQUENC WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS C

{-1.7< DELTA T<55-1.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 1

OF 2

GROUND LEVEL RELEASE MODE 0

OCT 1,

91 - DEC 31, 91 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 '-24.4 TOTAL N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0, 0.0 0.0 0 '

0.0 0.0 0 '

0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

0. 010 0.002 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.001 0.0 0.0 0.0 0.018

0. 019 0.009 0.008 0.0 0.0 0.0 0.0 0.0 0.000 0.0 0.005 0.005 0.0 0.003 0.003 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.013 0.008 0.013 0.002 0.015 0.009 0.0 0.0 0.0 0.009 0.0 0.0 0.0 0.0 0.0 0.0 0.009 0.044 0.030 0.007 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.010 0.0

0. 010 0.0 0.0 0.0 0.0 0.'0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.020 0.015 0.0 0.003 0.003 0.027 0.019 0.019 0.010 0.0 0.0 0.0 0.031 0.052 0.054 0.010 SUBTOTAL 0.0 0.0 0.012 0.055 0.052 0.124

0. 019 0.0 0.0 0.263 TOTAL HOURS OP VALID OBSERVATIONS 2103.000 TOTAL HOURS OP GROUND LEVEL RELEASE 230.430 TOTAI HOURS OP STABILITY CLASS C

13.000 TOTAL HOURS OP GROUND LEVEL STABZIITY CLASS C

5.530 METEOROIOGZCAL FACZLITY-MET FACILITY LOCATED 1.3 KM ESE OP BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 4S.30 METERS WIND DZRECTZON MEASURED AT 10.42 METER LEVEL WIND SPEED MEASURED AT 10.42 METER LEVEL EFFLUENT VELOCITY ~ 12.60 M/S NOTE TOTALS AND SUBTOTALS ARE OBTAZNED PROM UNROUNDED NUMBERS DATE PRINTED: 01/22/92

'U 4 C C

I lD M I

'Ln N 95 MG5 0 O

04 5

g 5O 'O W%l5 h)5 0

SPLIT JOINT PERCENTAGE FREQUENCZ WIND SPEED BY WIND DIRECTION FOR 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,

91 - DEC 31, 91 WIND DIRECTION 0.6-1.4 1.5-3.4 WIND SPEEDtMPH) 3 '-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 0.0 0.0 0.0 0.0 0 '

0.0 0.0 0.0 0.0 0.0 0.0 0.0 0 '

0 '

0 '

0 '

0.0 0.0 0 '

0.0 0.0 0.0 0.0 0.0 0.004 0 '

0.0 0.0 0.0 0.0 0.0 0.0 0.0

.0.004 0.0 0.0 0.0 0.0 0.000 0.003 0.022 0.058 0.014 0.009 0.0 0.002 0.0 0.0 0.0 0.0 0.109 0.015 0.007 0.022 0.019 0.029 0.058 0.094 0.055 0.039 0.007 0.005 0.007 0.006 0.003 0.008 0.019 0.390 0.045 0.032 0.028 0.039

0. 019 0.015 0.014 0.0 0.010 0.010 0.0 0.031 0.096

0. 010 0.026 0.062 0.435 0.176 0.106 0.029 0.0 0.0

- 0.0 0 '60 0.0 0.0 0.0 0.0 0.034 0.172 0.154 0.202 0.197 1.230 0.010 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.034 0.181 0.401 0.099 0.724 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.118 0.0 0.118 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0.

0.0 0.0 0.0 0.04 0.0 0.0 0.0 0.246 0.145 0.079 0.058 0.048 0.075 0.290 0.117 0.062 0.025 0.005 0.075 0.307 0.349 0.754 0.377 3.011 TOTAL HOURS OF VALID OBSERVATIONS 2103.000 TOTAL HOURS OF GROUND LEVEL RELEASE 230.430 TOTAL HOURS OF STABILITY CLASS D

904.770 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS D

63.320 METEOROLOGICAL FACZLZTY:

MET FACILITY LOCATED 1.3 KM ESE OF BROWNS FERRY NUCLEAR PLANT STABILZTY BASED ON DELTA-T BETWEEN 10-P3 AND 45.30 METERS WIND DIRECTION MEASURED AT 10.42 METER"LEVEL WIND SPEED HEASURED AT 10 '2 METER LEVEL EFFLUENT VEIOCZTY ~ 12 '0 M/S NOTE:

TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED HUMBERS DATE PRINTED. 01/22/92

'0 4 td C

00 tb ~

I MNQ Vl Ib CL n

0 Hg

'C) '0 N V> Qn

0

SPLIT JOINT PERCENTAGE FREQVENC WIND SPEED BY WIND DIRECTION POR STABILITY CLASS E

t-0.5<

DELTA T<

1.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 1

OP 2

GROUND LEVEL RELEASE MODE OCT 1,

91 - DEC 31, 91 WIND DIRECTION CALM 0.6-1.4 1.3-3.4 WIND SPEED(MPH) 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4

>=24.5 TOTAL N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW SUBTOTAL 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.000 0.0 0.0 0.0 0.006

0. 010 0.016 0.017 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.049

0. 011 0.014 0.013 0.038 0.030 0.088 0.161 0.198 0.072 0.020 0.020 0.019 0.017 0.004 0.0

0. 011 0.718 0.078 0.040 0.033 0.019 0 F 058

0. 197 0.300 0.501 0.083 0.027 0.0 0.006 0.011 0.014 0.035 0.065

l. 467 0.060 0.081 0.042 0.0 0.015 0.045 0.124

0. 164 0.095 0.0 0.009

0. 016 0.019 0.007 0.050 0.104 0.832 0.026 0.040 0.023 0.0 0.0 0.0

0. 019 0.076 0.076 0.0 0.010

0. 010 0.0 0.0 0.032 0.032 0.343 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

0. 010 0.010 0.020 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0;0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.175 0.176

'.111 0.058 0.104 0.337 0.614 0.954 0.342 0.047 0.039 0.051 0.048 0.025 0.127 0.222 3.429 TOTAL HOURS OF VALID OBSERVATZONS 2103.000 TOTAL HOURS OP GROUND LEVEL RELEASE 230.430 TOTAL HOURS OF STABILITY CLASS E

833.040 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS E

72.120 METEOROLOGICAL PACZLITYI MET FACZLZTY LOCATED 1.3 KM ESE OF BROWNS PERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45-30 METERS WIND DIRECTION MEASURED AT 10

~ 42 METER ZEVEL WIND SPEED HEASVRED AT 10.42 METER LEVEL EPFLUENT VELOCITY ~ 12. 60 M/S NOTE:

TOTALS AND SUBTOTALS ARE OBTAINED PROH UNROUNDED NUMBERS DATE PRINTED: 01/22/92 fD C

00 I

(I3 I

MCI 9I Ch O C3 O

0 H

Ph3 g

3C3 '0

'V C> 0)

I@3 0

0 SPLIT JOINT PERCENTAGE PRE<)UENC WIND SPEED BY WIND DIRECTION 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,

91 DEC 31, 91 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

HNE 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 0.001 0.001 0.000 0.0 0.000 0.000 0.000 0.000 0.0 0.000 0.004 0.000 0.0 0.006 0.013 0.008 0.0 0.017 0.026 0.007 0.0 0.004 0.0 0.0 0.0 0.0 0.0 0.081 0.046 0.014 0.016 0.009 0.042 0.077 0.159 0.134 0.037 0.0 0.0 0.005 0.003 0.001 0.0 0.028 0 '70 0.108 0.085 0.019 0.047 0.075 0.006 0.093 0.229 0.127 0.0 0.0 0 '

0.0 0.0 0.013 0.071 0.873 0.050 0.060 0.0 0.016 0.0 0.0 0.0 0.148 0.166 0.0 0.0 0.0 0.0 0.0 0.0 0.100 0.541 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.056 0.487 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.544 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Q

Qu 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.205 0.159 0.041 0.085 0.125 0.083 0.270 0.594 0.824 0.0 0.004 0.005 0.003 0.001 0.013 0.200 2.611 TOTAL HOURS OF VALID OBSERVATIONS TOTAL HOURS OF GROUND LEVEL RELEASE TOTAL HOURS OF STABILITY CLASS P

TOTAL HOURS OP GROUND LEVEL STABILITY CLASS F

2103.000 230.430 262.250 54.920 METEOROLOGICAL FACILITY:

MET FACZZ ITY LOCATED 1

~ 3 KM ESE OF BROWNS PERRY NUCLEAR PLANT STABILITY BASED OH DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND DIRECTION MEASURED AT 10.42 METER QEVEL WZHD SPEED MEASURED AT 10.42 METER LEVEL EPPLUEHT VELOCITY ~ 12.60 M/S NOTE TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS DATE PRINTED: 01/22/92 W,4 td 00 I

S M I

lb CL 0

0 Ph w g M 'O wVQ M ~0

SPLIT JOINT PERCENTAGE FREQUENC WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS G

(DELTA T

> 4.0 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 1

OF 2

GROUND LEVEL RELEASE MODE OCT 1,

91 DEC 31, 91 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

>~24.5 TOTAL N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW SUBTOTAL 0.001 0.001 0.000 0.000 0.000 0.000 0.001 0.005 0.000 0.000 0.0 0.0 0.0 0.0 0.0 0.000 0.008 0.0 0.004 0.0 0.0 0.0 0.002 0.002 0.047 0 ~ 006 0.000 0.0 0.0 0.0 0;0 0.0 0.0 0.062 0.023 0.029 0.001 0.001 0.006 0.001 0.042 0.161 0.006 0.0 0.0 0.0 0.0 0.0 0.0 0.007 0.277 0 ~ 038 0 ~ 092 0.0 0.0 0.008 0.0 0.034 0.108 0.0 0.0 0.0 0.0

'0. 0 0.0 0.0 0.044 0.324 0.008 0.0 0.017 0.0 0.0 0.0 0.0 0.019 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.009 0 F 052 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

.0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 o.o 0.0 0.0 0.0 0.0 0.0 0.0

~0.0 0.0 0.0 0.0 0.069 0.125 0.018 0.001 0.014 0.003 0.079 0.340 0.012 0.000 0.0 0.0 0.0 0.0 0.0 0.059 0.723 TOTAL HOURS OF VALID OBSERVATIONS 2103.000 TOTAL HOURS OF GROUND LEVEL RELEASE 230.430 TOTAL HOURS OF STABZLZTY CLASS G

66.770 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS G

15.200 METEOROLOGICAL FACZLITY:

MET FACILITY LOCATED 1.3 KM ESE OF 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 LEVEE EFFLUENT VELOCITY ~ 12.60 M/S NOTE TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS DATE PRINTED: 01/22/92 00 tD Y I

En&A 0> 0 CL 0

0 H

I g

8>0

SPIZT JOINT PERCENTAGE FREQUENC WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS A (DELTA T<m-1.9 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 2

OF 2

ELEVATED RELEASE MODE OCT 1,

91 DEC 31, 91 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 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0 '0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0 '

0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0 '

0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

, 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

-0. 0 0.0 0.0 0.0 0.0 TOTAL HOURS OF VALZD OBSERVATIONS TOTAL HOURS OF ELEVATED RELEASES TOTAL HOURS OF STABZLITY CLASS A TOTAL HOURS OF EIEVATED STABILITY CLASS A

2103. 000 1872.569

11. 210 0.0 METEOROLOGICAL FACILITY:

MET FACILITY LOCATED 1.3 KM ESE OF BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 45.30 AND 89.60 METERS WZND DIRECTION MEASURED AT 45.67 METER LEVEL WIND SPEED MEASURED AT 45.67 METER LEVEL EFFLUENT VELOCITY ~ 12.60 M/S NOTE:

TOTALS AND SUBTOTALS ARE OBTAINED. FROM UNROUNDED NUMBERS DATE PRINTED: 01/22/92 4 4 tO C

00 lb 'C I

v av MO>

O 0

0 M

thr g

M '0 w e lo h) w 0

SPLIT JOINT PERCENTAGE FREQUENCI WZND SPEED BY WIND DIRECTION FOR STABILITY CLASS B

- i-1. 9 <

DELTA T<=-1. 7 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 2

OF 2

ELEVATED RELEASE MODE

~

OCT 1,

91 DEC 31, 91 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 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0

0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0, 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.095 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.095 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.046 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.046 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.041 0.0 0.0 0.0 0.041 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.095 0.0 0.046 0.0 0.0 0.0 0.041 0.0 0.0 0.0

0. 182 TOTAI HOURS OF VALID OBSERVATIONS TOTAL HOURS OF ELEVATED RELEASES TOTAL HOURS OF STABILITY CLASS B

TOTAL HOURS OF ELEVATED STABILITY CLASS B

2103. 000 1872.569 11.960 3.830 METEOROLOGICAL FACILITY-MET FACILITY LOCATED 1.3 KM ESE OF BROWNS FERRY NUCLEAR PLANT STABILZTY BASED ON DELTA-T BETWEEN 45.30 AND 89.60 METERS WZND DIRECTION MEASURED AT 45.67 METER.'LEVEL WIND SPEED MEASURED AT 45.67 METER LEVEL EFFLUENT VELOCITY ~ 12.60 M/S NOTE:

TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS DATE PRINTED 01/22/92 000 Y I

O 80 0

H Phr g

'C) 'O

% Ql0

SPLIT JOINT PERCENTAGE FREQUENCZ WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS C

(-1.7<

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

BROWNS PERRY NUCLEAR PLANT PART 2

OF 2

ELEVATED RELEASE MODE OCT 1,

91 DEC 31, 91 WZND 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 HW NNW 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0-. 0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.048 0.095 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.046 0.0 0.047 0.0 0.0 0.0 0.046 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.040 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.034 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.048 0.141 0.0 0.047 0.0 0.0 0.0 0.120 0.0 0.0 0.0 SUBTOTAL 0.0 0.0 0.0 0.143 0.138 0.040 0.0 0.034 0.0 0.355 TOTAL HOURS OP VALID OBSERVATIONS TOTAL HOURS OF ELEVATED RELEASES TOTAL HOURS OP STABILITY CLASS C

TOTAL HOURS OF ELEVATED STABILITY CLASS C

2103.000 1872.569 13.000 7.470 METEOROLOGICAL FACILITY:

MET FACILITY LOCATED 1. 3 KM ESE OP BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DEITA-T BETWEEN 45.30 AND 89.60 METERS WIND DIRECTION MEASURED AT 45.67 METER LEVEL WIND SPEED MEASURED AT 45.67 METER LEVEL EPPLUENT VELOCZTY ~ 12.60 M/S NOTE TOTALS AND SUBTOTALS ARE OBTAINED PROM UNROUNDED NUMBERS DATE PRINTED: 01/22/92 C

OQ Q ~

I Ch &

~O CL 0

0Phr g

M Cl h) ~ 0

SPLIT JOINT PERCENTAGE FREQUENCI WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS D

(-1.5<

DELTA T<~-0.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 2

OP 2

ELEVATED RELEASE MODE OCT li 91 DEC 3li 91 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 0.003 0.003 0.004 0.002 0.005 0.012 0.018 0.012 0.011 0.005 0.006 0.001 0.003 0.007 0.002 0.003 0.095 0.0 0.0 0.048 0.0 0.0 0.0 0.048 0.143 0.048 0.0 0.143 0.0 0.0 0.0 0.048 0.0 0.476 0.143 0.143 0.143 0.095 0.238 0.571 0.856 0.476 0.476 0.238 0.143 0.048 0.143 0.333 0.048 0.143 4.232 0.380 0.095 0.190 0.238 0.095 0.808 1.094 0.523 0.380 0.190 0.571 0.380 0.285 0.285 0.048 0.048 5.611 0.411 0.363 0.319 0.319 0.408 0.598 0.961 0.229 0.320 0.180 0.189 0.185 0.142 0.274 0.320 0.454 5.672 1.787 1.285 0.542 0.296 0.418 0.719

l. 547

l. 279 0.868 0.207 0.296 0.454

l. 194 0.957 1.335 1.495 14.680 0.774 0.506 0.078 0.0 0.0 0.0 0.542 0.964 0.849 0.154 0.039 0.115 0.773 1.004 0.925 0.698 7.420 0.0 0.0 0.0 0.0 0.0 0.0 0.227 0.115 0.358 0.028 0.0 0.0 0.129 0.320

0. 461 0.122 1.760 0.0 0.0 0.0 0.0 0.0 0.0

0. 010 0.032

0. 011 0.0 0.0 0.0 0.0 0.010 0.003 0.0 0.066 3.498 2.395 1.323 0.950 1.165 2.708 5.303 3.772 3.319

1. 001 1.385 1.183 2.669 3.191 3.189 2.962 40.011 TOTAL HOURS OF VALID OBSERVATIONS TOTAL HOURS OP ELEVATED RELEASES TOTAL HOURS OF STABILITY CLASS D

TOTAL HOURS OF ELEVATED STABZIITY CLASS D

2103.000 1872.569 904.770 841.450 METEOROLOGICAL FACILITY:

MET FACILITY LOCATED 1.3 KM ESE OF BROWNS PERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 45.30 AND 89.60 METERS WIND DZRECTZON MEASURED AT 45.67 METER LEVEL WIND SPEED MEASURED AT 45.67 METER LEVEI EPPLUENT VELOCITY ~ 12.60 M/S NOTE:

TOTALS AND SUBTOTALS ARE OBTAZNED PROM UNROUNDED NUMBERS DATE PRINTED: 01/22/92 WW ti>

C 000 Y I

(D C

O 0

Hg M'0

'4hJr 0

SPLIT JOINT PERCENTAGE FREQUENCI 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 li 91 DEC 31'1 WIND DIRECTION CALM 0.6-1.4 1.5-3 '

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 0.006 0.004 0.009 0.015 0.013 0.017 0.028 0.011 0.002 0.002 0.009 0.006 0.004 0.002 0.002 0.011 0.143 0.048 0.0 0.0 0.048 0.0 0.048 0.0 0.0 0.048 0.0 0.0 0.0 0.048 0.0 0.0 0.048 0.285 0.095 0.095 0.190 0.285 0.285 0.333 0.618 0.238 0.0 0.048 0.190 0.143 0.048 0.048 0.048 0.190 2.853 0.238 0.143 0.476 0.285 0.713 1.046 0.999 0.666 0.190 0.048 0.143 0.095 0.095 0.048 0.238 0.095 5.516 0.677 0.503 0.313 0.186 0.186 0.728 2.133 0.960 0.460 0.092 0.047 0.092 0.044 0.046

0. 137 0.324 6.930 1.470 1.536 0.547 0.378 0.506 1.529 3.428 1.498 0.709 0.205 0.505 0.214 0.421 0.127 0.373 1.534 14.980

0. 195 0.197 0.039 0.039 0.0 0.039

l. 155 1.501 0.501 0.234 0.0 0.038 0.0 0.0 0.077 0.354 4.369 0.0

'.0 0.0 0.0 0.0 0.0 0.245 0.637 0.097 0.036 0.038 0.0 0.0 0.0 0.0 0.0 1.053 0.0 0.0 0.0 0.0 0.0 0.0 0.004 0.018 0.032 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.054 2.729 2.478

l. 574 1.237 1.704 3.740 8.609 5.528 2.039 0.665 0.931 0.588 0.660

0. 271 0.875 2.556 36.182 TOTAL HOURS OF VALID OBSERVATZONS TOTAL HOURS OF ELEVATED RELEASES TOTAL HOURS OF STABILITY CLASS E

TOTAL HOURS OF ELEVATED STABZLZTY CLASS E

2103. 000 1872.569 833.040 760.920 METEOROLOGICAL FACILITY:

MET FACILITY LOCATED 1.3 KM ESE OF BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 45.30 AND 89.60 METERS WIND DIRECTION MEASURED AT 45.67 METER 4,EVEL WIND SPEED MEASURED AT 45.67 METER LEVEi EFFLUENT VELOCITY ~ 12. 60 M/S NOTE:

TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS DATE PRZNTED: 01/22/92 W W td 00 (D

C I

a AQ>

lA lD D

O 0

H g

'4 %

jO0

SPLIT JOINT PERCENTAGE PREQVENCI WIND SPEED BY WIND DZRECTZON POR STABZLZTY CLASS P

t 1.5<

DELTA T<~ 4.0 C/100 M)

BROWNS PERRY NUCLEAR PLANT PART 2

OP 2

ELEVATED RELEASE MODE OCT 1,

91 DEC 31, 91 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

>~24.5 TOTAL N

NNE NE ENE E

ESE SE SSE S

.SSW SW WSW W

WNW NW NNW SUBTOTAL 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0 ~ 143 0.0 0.0 0 '

0.048 0.0 0.0 0.048 0 '0.0 0.238 0.0 0.143 0.0 0.048 0.143 0.190 0.428 0.143 0.095 0.048 0.0 0.095 0.143 0.0 0.0 0.0 1.474 0.0 0.095 0.238 0.238 0.143 0.285

0. 713 0.190 0.095 0.095 0.0 0.048 0 '

0.0 0.0 0.0 2.140 0.047 0.141 0.275 0.138 0.047 0.413 0.590 0.413 0.136 0.0 0.0 0.045 0.092 0.0 0.0 0.048 2.382

0. 451 0.498 0.500 0.377 0.374 0.256 0.124 0.424 0.127 0.044 0.044 0.042 0.0 0.0 0.0 0.169 3.429 0.039 0.0 0.0 0.078 0.0 0.0 0.0 0.0 0.0 0.039 0.0 0.0 0.0 0.0 0.0 0.039 0.196 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

,0.0 0.0 0.0 0.0 0.0 0.0 0.537 0.876

1. 013 0.878

0. 706 1.145 1.997 1.170 0.453

,0. 225 0.091 0.230 0.235 0.048 0.0 0.256 9.859 TOTAL HOURS OP VALID OBSERVATIONS TOTAL HOURS OP ELEVATED RELEASES TOTAL HOURS OF STABILITY CLASS P

TOTAL HOURS OP ELEVATED STABILITY CLASS F

2103.000, 1872.569 262.250 207.330 METEOROLOGZCAL FACILITY-MET FACILZTY LOCATED 1.3 KM ESE OF BROWNS PERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 45 '0 AND 89 '0 METERS WIND DIRECTION MEASURED AT 45.67 METER LEVEL WIND SPEED MEASURED AT 45.67 METER LEVEL EPPLVENT VELOCITY ~ 12.60 M/S NOTE:

TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NVMBERS DATE PRINTED: 01/22/92

'V 4 X C

00 (D 'C I

o aafL A

0the g

M 'O h)r 0

SPLIT JOINT PERCENTAGE FREQUENCIE WIND SPEED BY WIND DIRECTION FOR STABZLZTY CLASS G

{DELTA T 4 ~ 0 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 2

OF 2

ELEVATED RELEASE MODE OCT 1,

91 - DEC 31, 91 MEND DIRECTION CALM 0.6-1.4 1.5-3.4 WIND SPEED[MPH) 3 '-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 NNW SUBTOTAL 0

~ 0 0.0 0 '

0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0 '0.0 0.0 0.0 0.0 0.048 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

'.0 O.O48 0.0 0.0 0.0 0.0 0.0 0.048 0 '43 0.095 0.095 0.048 0.048 0.0 0.048 0 '

0.0 0.0 0.523 0.095 0.0 0.048 0.0 0.0 0.048 0.333 0.285 0.143 0.0 0.048 0.0 0.0 0.0 0.

0'.0 0.999 0.0 0.046 0.0 0.0 0.092 0.0 0.137 0.091 0.0 o.o46 0.047 0.0 0.0 0.0 0.0 0.0 0.459 0.0 0.081 0.043 0.086 0.083

0. 131 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.424 0.0 0.0 0.0 0.0 0 ~ 0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0 '

0.0 0.0 0.0 0.0 0.0 0

~ 0 0.0 0.0 0.0-0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.095 0.127 0.090 0.086 0.175 0.226 0.660 0.471 0.238 0.093 0.142 0.0 0.048 0.0 0.0 0.0 2.452 TOTAL HOURS OF VALID OBSERVATIONS TOTAL HOURS OF ELEVATED RELEASES TOTAL HOURS OF STABILITY CLASS G

TOTAL HOURS OF ELEVATED STABILITY CLASS G

2103.000 1872.569 66.770

51. 570 METEOROLOGICAL FACILITY:

MET FACILITY.LOCATED 1.3 KM ESE OF BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 45 ~ 30 AND 89.60 METERS WIND DIRECTION MEASURED AT 45.67 METERS

'LEVEL WZND SPEED MEASURED AT 45.67 METER LEVEL EFFLUENT VELOCITY ~ 12.60 M/S NOTE TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS DATE PRINTED: 01/22/92 C

ot>

I (D ~

I Ch C>0A 0

H th w g h) w O

JOINT PERCENTAGE FREQUENCIES D SPEED BY WIND DIRECTION FOR STABILITY CLASS A (DELTA TC~-1. 9 C/100 M)

BROWNS FERRY NUCLEAR PLANT OCT 1,

91 -

DEC 31, 91'IND DIRECTION CALM

0. 6-1. 4 1.5-3.4 WIND SPEED(HPH) 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 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0 '

0.0 0.0 0 '0.0 0 '

0.0 0.0 0.0 0 '

0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0 '

0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0'. 0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0, 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 SUBTOTAL 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 TOTAL HOURS OF VALID STABZIITY OBSERVATIONS TOTAL HOURS OF STABILITY CLASS A TOTAL HOURS OF VALID WIND DZRECTION-WIND SPEED-STABILITY CLASS A

TOTAL HOURS OF VALID WIND DIRECTION.-WIND SPEED-STABILITY OBSERVATIONS TOTAL HOURS CALM 2119 0

0 2116 0

METEOROLOGICAL FACILITY: MET FACILITY LOCATED 1.3 KM ESE OF BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON LAPSE RATE MEASURED BETWEEN 45.30 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT THE 92.63 METER LEVEL DATE PRINTED: 01/22/92 MEAN WIND SPEED

~

0.0 MPH NOTE:

TOTALS AND SUBTOTALS ABOVE ARE OBTAZNED FROM UNROUNDED NUMBERS C

00 tD M I

ch& Ol Ch lD O

0 0

H th w g

'C) '0

'4 %

fD h) w 0

JOINT PERCENTAGE FREQUENCIES 0

D SPEED BY WIND DIRECTION FOR STABILITY CLASS B

(-1 ~ 9< DELTA-T<~-1 7 C/100 M)

BROWNS PERRY NUCLEAR PLANT OCT 1,

91 -

DEC 31, 91 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 WNW NW NNW SUBTOTAL 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.047 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.047 0.0 0.0 0.0 0.0 0.0 0.0 0.047 0.047 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.095 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0.

0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.047 0.0 0.0 0.0 0.047 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.095 0.047 0.0 0.0 0.0 0.0 0.047 0.0 0.0 0.0 0.189 TOTAL HOURS OP VALID STABILITY OBSERVATIONS 2119 TOTAL HOURS OP STABILITY CLASS B

4 TOTAI HOURS OP VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS B

4 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABZLZTY OBSERVATIONS 2116 TOTAL HOURS CALM 0

METEOROLOGICAL PACILZTY: MET PACILITY LOCATED 1.3 KM ESE OF BROWNS PERRY NUCLEAR PLANT STABILITY BASED ON LAPSE RATE MEASURED BETWEEN 45 '0 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT THE 92.63 METER LEVEL DATE PRINTED: 01/22/92 MEAN WIND SPEED

~

7.9 MPH NOTE:

TOTALS AND SUBTOTALS ABOVE ARE OBTAINED FROM UNROUNDED NUMBERS C

00 tb M I

ChCt Q (D

0 H

Ph w g M 'U jll h) w 0

JOINT PERCENTAGE FREQUENCIES 0

SPEED BY WIND DIRECTION FOR STABILITY CLASS C

(-1.7< DELTA-T<~-1.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT OCT 1,

91 DEC 31, 91 WIND DIRECTION CALM 0.6-1.4 1.5-3 '

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 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0 '0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0 '

0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0 '

I 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.095 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.095 0.0 0.0 0 ~ 0 0.0 0.0 0.0 0.047 0.0 0.047 0.0 0.0 0.0 0.047 0.0 0.0 0.0 0.142 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.047 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.047 0.0 0.0 0.0 0.047 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0-0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.047 0.0 0.0 0.0 0.047 0.0 0.0 0.0 0.0'.0 0.047 0.142 0.0 0.047 0.0 0.0 0.0 0.142 0.0 0.0 0.0 0.378 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 DZRECTZON-WIND SPEED-STABZLZTY OBSERVATIONS TOTAL HOURS CALM 2119 8

8 2116 0

METEOROLOGICAL FACILITY: MET FACILITY LOCATED 1.3 KM ESE OF BROWNS FERRY NUCLEAR PLANT STABIIITY BASED ON LAPSE RATE MEASURED BETWEEN 45.30 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT THE 92.63 METER LEVEL DATE PRINTED: 01/22/92 MEAN WIND SPEED sa 9.7 MPH NOTE:

TOTALS AND SUBTOTALS ABOVE ARE OBTAZNED FROM UNROUNDED NUMBERS aU 4 W 0s I

ID ss,'

ch&

Qs O>

(D 0

0A s

9 sO '<>

'4 'C)

N r 0

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

(-1.5<

DELTA-T< -0.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT OCT 1,

91 - DEC 31, 91 WIND DIRECTION

0. 6-1. 4 1.5-3.4 WIND SPEED(MPH) 3.5-5.4 5.5-7.4 7.. 5-12. 4'2. 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 0.003 0.011 0.003 0.005 0.008 0.019 0.038 0.008 0.014 0.003 0.024 0.011 0.008 0.014 0.008 0.014 0.0 0.095 0.0 0.0 0.0 0.095 0.047 0.047 0 '

0.0 0.095 0.047 0.0 0.047 0.0 0.047 0.047 0.095 0.047 0.095 0 ~ 142 0.236 0.614 0;095 0.236 0.047 0.331 0.142 0.142 0.189 0.142 0.189 0.142 0.142 0.142 0.095 0.047 0.567 0.851 0.331 0.236 0.236 0.236 0.189 0.189 0.284 0.142 0 '47 0.331 0.236 0.236 0.189 0.142 0.473 0.284 0.284 0.189 0.236 0.236

0. 331 0.331 0.284 0.142 0.236

1. 465 0.992 0.473 0.425 0.378' 1.371 1.276 1.087

,1.040 0.378 0.284 0.236 0.378

l. 371 1.087 1.654 1.371 0.945 0.473 0.142 0.189 0.425 1.560 1.087 1.087 0.189 0.189 0.425

l. 418 0.945 1.229 0.992 0.378 0.095 0.0 0.0 0.0 0.095 0.520 0.331 0.898 0.236 0.0 0.095 0.614 0.992 1.'040 0.331 0.0 0.0 0.0 0.0 0.0 0.047 0.567 0.236 0.142 0.047 0.0 0.0 0.189 0.189 0.189 0.047 3.736 2.610 1.373 0.951 0.906 3.327 5.756 3.505 3.841 1.373 1.395 1.476 3.269 4.314 3.978 3.558 SUBTOTAL 0.189 0.520 2.788 3.875 4.159 13.894 12.665 5.624 1.654 45.369 TOTAL HOURS OF VALID STABZLZTY 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-STABZLZTY OBSERVATIONS TOTAL HOURS CALM 2119 962 960 2116 4

METEOROIOGZCAZ FACZLZTY: MET PACILZTY LOCATED 1.3 KH ESE OF BROWNS PERRY NUCLEAR PLANT STABZLZTY BASED ON LAPSE RATE MEASURED BETWEEN 45 '0 AND 89-59 HETERS WIND SPEED AND DIRECTION HEASURED AT THE 92.63 HETER LEVEL DATE PRINTED: 01/22/92 MEAN WIND SPEED

~

12.0 MPH NOTE:

TOTALS AND SUBTOTALS ABOVE ARE OBTAINED PROM UNROUNDED NUMBERS U4%

00 (D Y I

MCtQ M lD CL O

0, Hg M '<)

M 'C7 Q)

M~O

0 JOINT PERCENTAGE FREQUENCIES SPEED BY WIND DIRECTION FOR STABZLITY CLASS E

t-0.5<

DELTA-T<~ 1.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT OCT 1,

91 DEC 31, 91 WIND DIRECTION 0.6-1.4 1.5-3.4'IND 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.

006'.009 0.003 0.003 0.003 0.030 0.009 0.012 0.0 0.003 0.009 0.0 0.003 0.0 0.003 0.095 0.0 0.095 0.047 0.0 0.047 0.0 0.095 0.095 0.047 0.0 0.047 0.0 0.0 0.047 0.0 0.0 0.520 0.047 0.0 0.095 0.047 0.0 0.047 0.378 0.047 0.142 0.0 0.0 0.142 0.0 0.0 0.0 0.047 0 '92 0.047 0.047 0.095 0.142 0 F 236 0.236 0.331 0.236 0.142 0.189 0.095 0.095 0.047 0.0 0.047 0.095 2.079 0.095 0.425 0.095 0.189 0.189 0.236 0.473 0.473 0.378 0.189 0.142 0.047 0.142 0.047 0.047 0.142 3.308 0.992 0.709 0.898 0.756 0.473 1.040 1.701 1.134

l. 512 0.567 0.236 0.284 0.095 0.142 0.331 0.567

11. 437 1.323 1.134 0.520 0.378 0.095 0.803 4.442 2.741 0.851 0.662 0.473 0.189 0.331 0.142 0.189 1.418 15.690 0.189 0.236 0.0 0.0 0.0 0.095 1.654 2.268 0.425 0.236 0.047 0.047 0.0 0.0 0.095 0.425

5. 718 0.0 0.0 0.0 0.0 0.0 0.0 0.142 0.567 0.520 0.0 0.0 0.0 0.0 0.0 0.0 0.0

l. 229 2.697 2.652 1.757 1.515 1.043 2.460 9.245 7.570 4.029 1.843 1.043 0.812 0.614 0.381 0.709 2.697 41.068 TOTAL HOURS OF VALID STABILITY OBSERVATIONS TOTAL HOURS OF STABILITY CLASS 'E TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS E

TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABZLZTY OBSERVATIONS TOTAL HOURS CALM 2119 870 869 2116 2

METEOROLOGICAL FACILITY: MET FACILITY LOCATED 1.3 KM ESE OF BROWNS FERRY NUCLEAR PLANT STABZLITY BASED ON LAPSE RATE MEASURED BETWEEN 45.30 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT THE 92.63 METER LEVEL DATE PRINTED: 01/22/92 MEAN WIND SPEED

~

13.1 MPH NOTE:

TOTALS AND SUBTOTAIS ABOVE ARE OBTAINED FROM UNROUNDED NUMBERS 044 C

OQ5 Y I

fO O(D C

0 0

Hg M 'O

'V % 0 M~O

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

( 1.5<

DELTA-T<~ 4.0 C/100 M)

BROWNS FERRY NUCLEAR PLANT OCT 1,

91 DEC 31, 91 WIND DIRECTION CALM 0.6-1.4 1.5-3.4 WIND SPEEDtMPH) 3.5-5.4 5.5-7.4

7. 5-12. 4'2.5-18.

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 0.004 0.0 0.004 0.0 0.020 0.008 0.004 0.0 0.0 0.0 0.004 0.0 0.0 0.004 0.0 0 '

0.047 0

0 0.0 0.0 0.0 0.047 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.047 0.047 0.0 0.047 0.0 0.189 0.095 0.047 0.0 0.0 0.0 0.047 0.0 0.0 0.047 0.0 0.0 0.520 0.0 0.0 0.047 0.047 0.142 0.095 0.236 0.0 0.095 0.095 0.047 0.0 0.0 0.047 0.0 0.047 0.898 0.0 0.0 0.0 0.095 0.0 0.142 0.236 0.189 0.189 0.189 0.047 0.0 0.0 0.047 0.0 0.0 1.134 0.0 0.236 0.236 0.473 0.236 0.331 0.614 0.378 0.662 0.095 0.142 0.0 0.095 0.0 0.095 0.0 3.592 0.378 0.284 0.331 0.756 0.142 0.378 0.425 0.331 0.425 0.142 0.047 0.095 0.0 0.0 0.0 0.047 3.781 0.0 0.095 0.095 0.0 0.0 0.0 0.047 0:0 0.047 0.047 0.0 0.047 0.0 0.0 0.0 0.095 0.473 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0.

0.0 0.0 0.0 0.0 0.0 0.0 0.429 0.614 0.760 1.371 0.776 1.048 1.611 0.898 1.418 0.567 0.335 0.142 0.095 0.146 0.095 0.189 10.491 TOTAL HOURS OF VALID STABILITY OBSERVATZONS TOTAL HOURS OF STABILITY CLASS F

TOTAL HOURS OF VALID WIND DIRECTION-WZND SPEED-STABZLZTY CLASS F

TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS TOTAL HOURS CALM 2119 222 222.

2116 1

METEOROLOGICAL FACILITY: MET FACZLITY LOCATED 1.3 KM ESE OF BROWNS FERRY NUCLEAR PLANT STABZLITY BASED ON LAPSE RATE MEASURED BETWEEN 45.30 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT THE 92 ~ 63 METER LEVEL DATE PRINTED: 01/22/92 MEAN WIND SPEED

~

10.9 MPH NOTE:

TOTALS AND SUBTOTALS ABOVE ARE OBTAZNED FROM UNROUNDED NUMBERS C

CO tD Y I

~

tD D-0 Oth W g M'0 t4 w 0

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

l DELTA T 4. 0 C/100 M)

BROWNS FERRY NUCLEAR PLANT OCT 1,

91 DEC 31, 91 WIND DIRECTION 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 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0 '

0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.047 0.0 0.047 0.0

-0.0 0.0 0.0 0.0 0.0 0.095 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.047 0.0 0.0 0.047 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.047 0.0 0.0 0.047 0.0 0.0 0.095 0.0 0.0 0.047 0.0 0.047 0.0 0.047 0.0 0.047 0.142 0.0 0.0 0.0 0.047 0.0 0.0 0.378 0.0 0.047 0.0 0.047 0.0 0.095 0.095 0.236 0.284 0.095 0.142 0.047 0.0 0.0 0.0 0.0 1.087 0.0 0.095 0.0 0.142 0.095 0.0 0.189 0.047 0.0 0.047 0.047 0.095 0.0 0

0 0.0 0.0 0.756 0.0 0.047 0.0 0.0 0.0 0.0

0. 0" 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.047 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.189 0.047 0.189 0.142 0.095 0.331 0.331 0.331 0.331 0.236 0.142 0.0 0.142 0.0 0.0 0.0 2.505 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2119 TOTAL HOURS OF STABILITY CLASS G

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

53 TOTAL HOURS OF VALID WZND DIRECTION-WIND SPEED-STABZLZTY OBSERVATIONS 2116 TOTAL HOURS CALM 0

METEOROLOGICAL FACILITY: MET FACILITY LOCATED 1.3 KM ESE OF BROWNS FERRY NUCLEAR PLANT STABZLZTY BASED ON LAPSE RATE MEASURED BETWEEN 45.30 AND 89.59 METERS WIND SPEED AND DZRECTZON MEASURED AT THE 92.63 METER LEVEL DATE PRINTED: 01/22/92 MEAN WIND SPEED

~

10.4 MPH NOTE:

TOTALS AND SUBTOTALS ABOVE ARE OBTAINED FROM UNROUNDED NUMBERS C

OQ I

wUQ M (D C4 0

0 9

M'0 h)r 0

ENCLOSURE 2 TENNESSEE VALLEY AUTHORITY SEMIANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT BROWNS FERRY NUCLEAR PLANT (BFN)

EFFLUENT AND WASTE DISPOSAL SEMIANNUAL REPORT

EFFLUENT AND WASTE DISPOSAL SEMIANNUAL REPORT

SUMMARY

SECOND HALF 1991 The radioactive effluents for the second half of 1991 were normal for a three unit boiling water reactor plant with one unit operating and the other two in extended outage.

The release of radioactive material to the environment from Browns Ferry has been a small fraction of the 10CFR20 Appendix B and 10CFR50 Appendix I limits.

Page 1 of 17

EFFLUENT AND WASTE DISPOSAL SEMIANNUAL REPORT SUPPLEMENTAL INFORMATION SECOND HALF 1991 I.

Re ulato Limits A.

Fission and Activation Gases in Gaseous Effluent:

The release of fission and activation gases is regulated by the dose limits of 10 CFR 50 Appendix I.

The air dose; to areas at and beyond the site boundary due to noble gases released in gaseous effluents per unit, shall be limited during any calendar quarter to g 5 millirad (mrad) for gamma radiation and g 10 mrad for beta radiation; and during any calendar year to g 10 mrad for gamma radiation and g 20 mrad for beta radiation.

B and C.

Iodines and Particulates with Half-Lives Greater than Eight Days in Gaseous Effluents.

The release of iodines and particulates in gaseous effluent is regulated by 'the dose limits of 10 CFR 50 Appendix I.

The dose to a member of the public from radioiodines, radioactive materials in particulate form, and radionuclides other than noble gases with half-lives greater than eight days in gaseous effluent released per unit to areas at and beyond the site boundary shall be limited to any organ during any calendar quarter to g 7.5 millirem (mrem),

and during any calendar year to g 15 mrem.

D.

Liquid Effluents The release of radioactive liquid effluents is regulated by the dose limits of 10 CFR 50 Appendix I.

The doses or dose commitment to a member of the public from radioactive materials in liquid effluents released from each unit to unrestricted areas shall be limited during any calendar quarter to g 1.5 mrem to the total body and 5 mrem to any organ and during any calendar year to 3 mrem to the total body and

< 10 mrem to any organ.

Page 2 of 17

'FFLUENT 'AND WASTE DISPOSAL SEMIANNUAL REPORT SUPPLEMENTAL INFORMATION SECOND HALF 1991 II.

Maximum Permissible Concentrations A.

Fission and Activation Gases in Gaseous Effluent:

1.

The instantaneous release rate of fission and activation gases is regulated by the dose rate limit of 10 CFR 20 Appendix B.

The dose rate at any time to areas at and beyond the site boundary due to noble gases released in gaseous effluents from the site shall be limited to

< 500 mrem per year to the total body and

< 3000 mrem per year to the skin.

2.

The BFN Offsite Dose Calculation Manual (ODCM) determines the

'maximum noble gas release rate based upon the dose rate limits in II.A.l.

The instantaneous noble gas release rates are limited by the following equation:

gl

+

g2 <'1 0.15 14.4 Ql = The release rate from the building exhaust vents in Ci per second.

Q2 = The release rate from the main stack in Ci per second.

B. and C. Iodines and Particulates with Half-Lives Greater than Eight Days in Gaseous Effluents 1.

The instantaneous release rate of particulates and iodines is regulated by the dose rate limit of 10 CFR 20 Appendix B.

The dose rate at any time to areas at and beyond the site boundary, due to I-131, H-3 and particulates with greater than eight days half-lives released in gaseous effluents from the site, shall be limited to

< 1500 mrem per year to any organ.

2.

The BFN ODCM determines the maximum particulate and iodine release rate based upon the dose rate limit of II. B and C.l.

The instantaneous iodine and particulate release rates are limited by the following equation:

+

g4<1 2.19 35.7 Q3 =

Q4 The release rate from the building exhaust vents in pCi per second.

The release rate from the main stack in pCi'per second.

Page 3 of 17

EFFLUENT AND WASTE DISPOSAL SEMIANNUAL REPORT SUPPLEMENTAL INFORMATION SECOND HALF 1991 II.

Maximum Permissible Concentrations (Continued)

D.

Liquid Effluents 1.

The concentration of radionuclides in liquid effluents released at any time from the site to unrestricted areas shall be limited to the concentrations specified in 10 CFR 20, Appendix B, Table II, Column 2 for radionuclides other than dissolved or entrained noble gases.

2.

For dissolved or entrained noble gases, the concentration shall be limited to 2E-4 pCi per milliliter (ml) total activity.

III.

Avera e Ener Not a licable IV.

Measurements and A

roximations of Total Radioactivit A.

Fission and Activation Gases:

1.

Noble gases in the building vent and stack gaseous effluent are continuously monitored.

The flow rate of the stack is continuously monitored and the building vent effluent flow rates are calculated once a shift based on the configuration of operating exhaust fans.

The flow rate data -is consolidated weekly to determine the volume of airborne effluent released from the plant.

The noble gas monitor data is consolidated monthly to determine the total curies of noble gases released during the month.

2.

Gas grab samples are taken and analyzed monthly to determine the relative noble gas activity concentrations.

This information is used to apportion the total curies.of noble gases released among different noble gas radionuclides.

3.

The tritium concentration is determined by the analysis of a monthly grab sample for each release point.

B. and C. Iodines and Particulates l.

Iodines and particulates are continuously sampled on impregnated charcoal filters and particulate filters, respectively.

The charcoal and particulate samples are replaced at, least weekly and analyzed to determine specific activity concentrations.

The specific activity concentrations and vent flow rate data are used weekly to verify that release rate limits were not exceeded.

The specific activity concentrations and total volume of gaseous effluent are used on a monthly basis to determine the total curies of each particulate and iodine released during the month.

Page 4 of 17

EFFLUENT AND WASTE DISPOSAL SEMIANNUAL REPORT SUPPLEMENTAL INFORMATION SECOND HALF 1991 IV.

Measurements and A

roximations of Total Radioactivit Continued 2.

The gross alpha concentration is determined by analysis of a monthly

. particulate filter composite sample and strontium -89 and -90 are determined by analysis of a quarterly particulate filter composite sample for each release point.

D.

Liquid Effluents 1.

The gamma ray emitting radionuclide concentrations are determined for ieach batch by gamma ray spectroscopy analysis of a grab sample.

The allowable release rate is calculated for each batch based upon the known dilution flow.

The flow rate of the liquid effluent is continuously monitored and the total volume released in each batch

, is determined.

The total gamma activity released in each batch is determined by multiplying the radionuclide concentrations by the total volume discharged.

The total gamma activity released during the month is then determined by summing the gamma activity content of each batch discharged during the month.

2.

The gross alpha and tritium concentrations are measured on a monthly composite sample.

The strontium -89 and -90 and iron -55 are measured on a quarterly composite sample.

V.

Batch Third guerter Fourth Quarter Unite 92 26503 345 288 35 A.

Liquid 1.

Number of batches released 2.

Total time period for batch releases 3.

Maximum time period for a batch release 4.

Average time period for batch releases 5.

Minimum time period for a batch release 6.

Average stream flow during period of release of effluent into a flowing stream 34926 68 19908 530 293 5

Each Minutes Minutes Minutes Minutes 59007 ft 3/S B.

Gaseous None Page 5 of 17

EFFLUENT AND WASTE DISPOSAL SEMIANNUAL REPORT SECOND HALF 1991 LIQUID EFFLUENTS SUMMATION OF ALL RELEASES A.

Fission and Activation Products 1.

Total Releases Third Fourth Unit Quarter Quarter

/ Error.

Curies 3.08E-01 5.34E-Ol 2.

Average Diluted Concentration Released During Period 3.

Percent of Applicable Limit (1.00E-07 pCi/ml)

B.

Tritium 1.

Total Releases pCi/ml 5.81E-09 1.18E-OS 5.81E+00 1.18E+01 Curies 1.51E+00 4.16E+00 2.

Average Diluted Concentration Released During Period 3.

Percent of Applicable Limit (3E-03 NCi/ml)

, pCi/ml 2.85E-OS 9.18E-08 9.50E-04 3.06E-03 t

C.

Dissolved and Entrained Noble Gases 1.

Total Releases Curies 6.50E-02 8.52E-02 2.

Average Diluted Concentration Released During Period 3.

Percent of Applicable Limit (2.00E-04 pCi/ml)

D.

Gross Alpha Radioactivity 1.

Total Releases pCi/ml 1.23E-09 1.88E-09 6.13E-04 9.40E-04 Curies 2.

Average Diluted Concentration Released During Period pCi/ml ND ND E.

Volume of Liquid Waste to Discharge Canal (Before dilution)

Liters 1.05E+07 F.

Volume of Dilution Water for Period Liters 5.30E+10 G.

Total CCW flow for Six Months 500.9 gigagallons 7.98E+06 3

4.53E+10 10 Includes Xe-133, Xe-135, and others Page 6 of 17

EFFLUENT AND WASTE DISPOSAL SEMIANNUAL REPORT LIQUID RELEASES FOR SECOND HALF 1991 BATCH MODE

~isoto e

(Required by Regulation (REG) Guide 1.21) 1.

Cr-51 2.

Mn-54 3.

Co-58 4.

Fe-59 5.

Co-60 6.

Zn-65 7.

Nb-95 8.

Zr-95 9.

Mo-Tc-99m 10.

I-131 ll.

Xe-133 12.

Cs-134 13.

Xe-135 14.

Cs-137 15.

Ba-140 16.

La-140 17.

Ce-141 18.

Sr-89 19.

Sr-90 Third Quarter Unit Curies 1.61E-03 1.50E-03 2.25E-03 1.75E-02 8.55E-03 8.77E-03 4.65E-02 1.20E-02 1.77E-02 1.10E-01 2.93E-04 Fourth Quarter Unit Curies 4.02E-02 1.26E-02 2.10E-02 ND 3.31E-02 2.14E-02 3.62E-02 1.17E-02 4.95E-02 3.44E-03 3.47E-02 5.58E-02 4.19E-03 9.15E-04 ND ND Page 7 of 17

EFFLUENT AND WASTE DISPOSAL SEMIANNUAL REPORT LIQUID RELEASES FOR SECOND HALF 1991 BATCH MODE

~Isoto e

Third Quarter Fourth Quarter (Not Required by Regulation (REG) Guide 1.21)

Unit Curies Unit Curies 1.

Fe-55 2.

Na-24 3.

I-133 4.

Xe-133m 5.

I-135 6.

Y-91m 7.

Sb-125 8.

I-132 9.

Xe-135m 10.

Mn-56 11.

Sr-91 12.

Sr-92 13.

I-133 14.

Np-239 5.90E-02 1.99E-02 9.63E-04 1.45E-03 5.20E-06 5.99E-05 7.34E-06 5.85E-08 ND 1.69E-01 ND 1.07E-03 4.41E-03 2.64E-05 ND 3.28E-05 3.75E-09 3.05E-04 1.57E-03 1.30E-04 3.21E-02 3.66E-04 Page 8 of 17

EFFLUENT AND WASTE DISPOSAL SEMIANNUAL REPORT SECOND HALF 19911 GASEOUS EFFLUENTS SUMMATION OF ALL RELEASES Summation of All Releases A.

Fission and Activation Gases Unit Third Fourth Quarter Quarter

% Error 1.

Total Releases 2.

Average Release Rate for Period 3.

Percent of Technical Specification (TS) limit2 B.

Iodines 1.

Total Iodine-131 2.

Average Release Rate for Period 3.

Percent of TS limit Curies 1.28E+03 7.73E+02 1.88E-02 1.00E-02 Ci 4.00E-02 2.69E-03 pCi/sec 5.09E-03 3.42E-04 1.83E-01 6.52E-03 pCi/sec 1.63E+02 9.83E+01 45 36 C.

Particulates 1.

Particulates with half-lives

> eight days Ci 1.68E-02 2.01E-03 35 2.

Average release rate for period 3.

Percent of TS limit 4.

Gross alpha radioactivity D.

Tritium 1.

Total release 2.

Average release rate for period 3.

Percent of TS limit 4.

Ground level release 5.

Elevated release Ci 9.43E-02 7.80E-03 2.12E-06 Ci 8.09E-01 1.76E+00 pCi/sec 1.03E-Ol 2.24E-Ol Ci Ci 4.39E+00 9.73E+00 7.52E-01 1.09E+00 5.70E-02 9.10E-02 pCi/sec 2.14E-03 2.56E-04 21 Reporting period 189 days.

The dose rate limit for Noble gases shall be

< 500 mrem per year to the total body and

< 3000 mrem per year to the skin and the dose rate limit for I-131, H-3, and particulates with g eight day half-lives shall be

< 1500 mrem per year to any organ.

Page 9 of 17

EFFLUENT AND WASTE DISPOSAL SEMIANNUAL REPORT SECOND HALF 1991 GASEOUS EFFLUENTS ELEVATED RELEASE 1.

Fission Gases Unit Third Fourth guarter guarter Krypton-85m Ci 2.60E+02 2.32E+02 Krypton-85 Krypton-87 Ci Ci 7.04E+01 ND ND Krypton-88 Xenon-133 Xenon-135m Xenon-135 Xenon-138 Others (specify)

Ar-41 Total for Period Ci Ci Ci Ci Ci Ci Ci 2.91E+02 2.10E+02 2.31E+02 3.19E+02 1.41E+02 6.72E+00 ND 7.70E+01 ND 1.07E+03 7.68E+02 2.

Iodines Iodine-131 Iodine-132 Iodine-133 Iodine-134 Iodine-135 Total for Period Ci Ci Ci Ci Ci Ci 4.95E-03 ND 1.30E-02 5.64E-03 2.77E-02 1.32E-02 1.86E-03 1.67E-03 9.21E-04 2.63E-03 7.01E-03 3.30E-03 Page 10 of 17

EFFLUENT AND WASTE DISPOSAL SEMIANNUAL REPORT SECOND HALF 1991 GASEOUS EFFLUENTS ELEVATED RELEASE Unit Third Fourth Quarter guarter 3.

Particulates Sr-89 1 Sr-90 1 Cs-134 Cs-137 Ba-140 La-140 Others (specify)

Cr-51 Cs-138 Ba-139 Zn-69m Sr-91 Total for Period 4.

Tritium Ci Ci Ci Ci Ci Ci Ci Ci Ci Ci Ci Ci Ci ND 3.72E-05 ND 1.11E-07 ND 5.02E-05 4.24E-04 3.09E-04 2.17E-04 2.99E-04 7.60E-05 2.45E-01 3.40E-01 1.00E-04 4.94E-03 6.41E-04 5.91E-01 5.70E-02 9.10E-02 Predicted estimation of releases.

Include all particulate nuclides (even those with half-lives 8 days)

Page ll of 17

EFFLUENT AND WASTE DISPOSAL SEMIANNUAL REPORT SECOND HALF1991 GASEOUS EFFLUENTS GROUND LEVEL RELEASE Unit Third Fourth Quarter t}uarter 1.

Fission Gases Krypton-85m Krypton=85 Krypton-87 Krypton-88 Xenon-133 Xenon-135m Xenon-135 Xenon-138 Others (specify)

Ci Ci Ci Ci Ci Ci Ci ND ND 7.64E+01 4.89E+00 1.34E+02 ND Total for Period Ci 2.10E+02 4.89E+00 2.

Iodines Iodine-131 Iodine-132 Iodine-133 Indine-134 Iodine-135 Total for Period Ci Ci Ci Ci Ci 3.56E-03 1.32E-03 2.75E-02 1.33E-02 ND ND ND 8.62E-03 3.11E-02 2.32E-02 Page 12 of 17

EFFLUENT AND WASTE DISPOSAL SEMIANNUAL REPORT SECOND HALF 1991 GASEOUS EFFLUENTS GROUND LEVEL RELEASE e

Unit Third Fourth guarter guarder 3.

Particulates Sr-89 1 Sr-90 1 Cs-134 Cs-137 Ba-140 La-140 Ci Ci Ci Ci Ci Ci ND

4. 80E-06 ND ND 7.89E-05 7.24E-04 1.25E-02 7.15E-05 1.02E-03 1.20E-04 Others (specify)

Cr-51 Co-58 Co-60 Mo/Tc-99m Ce-144 Zn-65 Mn-54 Ba-139 Na-24 Total for Period 4.

Tritium Ci Ci Ci Ci Ci Ci Ci Ci Ci Ci Ci 8.25E-04 7.34E-05 9.98E-04 ND ND ND ND ND ND 5.55E-04 5.40E-05 2.35E-04 5.20E-04 2.87E-05 1.42E-04 2.82E-05 8.97E-03 1.12E-02 1.62E-02 2.19E-02 7.52E-01 1.09E+00 Predicted estimation of releases.

Include all particulate nuclides (even those with half-lives 8 days)

Page 13 of 17

EFFLUENT AND WASTE DISPOSAL SEMIANNUAL REPORT SECOND HALF 1991 SOLID WASTE AND IRRADIATED FUEL SHIPMENTS A.

Solid Waste Shipped Offsite For Burial Or Disposal (Not Irradiated Fuel) 1.

Type of Waste Units Amount Error a.

Spent resins, filter

sludges, evaporator

bottoms, etc.

m3 Ci 8.17E+01 1.00E+02 1.50E+Ol

• b.

Dry compressible waste m3 contaminated equip., etc.

Ci 6.42E+Ol 5.43E+00 1.50E+01 c.

Irradiated components, control rods,'etc.

m3 Ci 4.85E+00 3.34E+04 1.50E+01 d.

Other m3 Ci O.OOE+00 O.OOE+00 N/A 2 ~

Dry compressible waste shipped from processor to the burial ground:

~~E

)1 m3, ~13E 00 Gi.

These numbers are included in b.

Estimate of major nuclide composition (by waste type) a.

Spent resins, filter sludge, evaporator

bottoms, etc.

Nuclide l.

Iron 55 (2) 2.

Cobalt-60 (1) 3.

Cesium-134 (1) 4.

Cesium-137 (1) 5.

Nickel-63 (1) 6.

Other Nuclides (2)

(1) Measured (2) Calculated Percenta e

3.09E+00 2.61E+01 6.39E+00 4.90E+Ol 1.51E+Ol Ci 3.10E+00 2.60E+01 6.40E+00 4.91E+Ol 1.51E+01 3.00E-01 Page 14 of 17

EFFLUENT AND WASTE DISPOSAL SEMIANNUAL REPORT SECOND HALF 1991 SOLID WASTE AND IRRADIATED FUEL SHIPMENTS (Continued)

Solid Waste Shipped Offsite For Burial Or Disposal (Not Irradiated Fuel) (Continued) 2.

Estimate of mijor nuclide composition (by waste type) (Continued) b.

Dry compressible

waste, contaminated equipment, etc.

Nuclide 1.

Iron-55 (2) 2.

Cobalt-, 60 (2) 3.

Nickel-63 (2) 4.

Zinc-65 (2) 5.

Silver-110M (2) 6.

Carbon-14 (2) 7.

Zirconium-95 (2) 8.

Cesium-134 (2) 9.

Cesium-137 (2) 10.

Cerium-141 (2) ll.

Strontium-89 (2) 12.

Tritium-3 (2) 13.

Antimony-125 (2) 14.

Other Nuclides (2)

(1) Measured (2) Calculated Percenta e

3.10E+Ol 3.60E+01 8.26E+00 2.39E+00 1.05E+00 1.21E+00 7.45E-Ol 1.28E+00 8.29E+00 1.53E+00 1.45E+00 2.82E+00 1.53E-01 3.31E+00 1.68E+00 1.91E+00 4.39E-01 1.27E-01 5.58E-02 6.41E-02 4.01E-02 6.82E-02 4.41E-01 8.15E-02 7.69E-02 1.50E-01 8.16E-03 1.76E-01 Page 15 of 17

EFFLUENT AND WASTE DISPOSAL SEMIANNUAL REPORT SECOND HALF 1991 SOLID WASTE AND IRRADIATED FUEL SHIPMENTS (Continued)

A.

Solid Waste Shipped Offsite for Burial or Disposal (Not Irradiated Fuel) (Continued) 2.

c ~

Estimate of Ma)or Nuclide Composition (By Waste Type)

(Continued)

Irradiated components, control rods, etc.

Nuclide 1.

Iron-55 (2) 2.

Cobalt-60 (2) 3.

Nickel-63 (2),

4.

Other Nuclides (2)

Percenta e

2.67E+Ol 6.42E+01 8.75E+00 Ci 8.95E+03 2.15E+04 2.93E+03 1.20E+02 0

(1) Measured (2) Calculated 3.

Solid waste disposition Number of

~Shi ments 18 14 B.

Irradiated Fuel Disposition Number of

~Shi ments NONE Mode of Trans ortation Sole Use Truck Sole Use Truck Mode of Trans ortation N/A Destination

Barnwell, SC

Quadrex, Oakridge, TN Destination N/A Page 16 of 17

EFFLUENT AND WASTE DISPOSAL SEMIANNUAL REPORT SECOND HALF 1991 SOLID WASTE AND IRRADIATED,FUEL SHIPMENTS (Continued)

C.

Description of Shipments Number o'

Type Type Number of

~Shi ments Container

~uantft Containers Container Volume Type Waste 14 Strong A-LSA Tight Container (STC)

See Note See Note DAW High Integrity Container (HIC)

High Integrity Contianer (HIC)

A-LSA B-LSA 5.83m3 5.83m3 Dewatered Resin Dewatered Resin Steel Liner Strong Tight Container (STC) llBll A-LSA 1.6m3 7.9m3 Irradiated Hardware DAW Solidification agents used:

None Absorbents used:

None NOTE:

14 shipments to waste processor contained the following:

Type of

~Packa e

Number of

~Packs es Volume Each 40'ealand (STC)

"FR" Box (STC)

"B" Box (STC).

"Jackson Jordan" Box (STC) 10 72.50 06.40 02.66 02.66 "7A/55 Gallon" Drums (STC) 40 00.21 Page 17 of 17

ENCLOSURE 3

TENNESSEE VALLEY AUTHORITY SEMIANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT BROWNS FERRY NUCLEAR PLANT (BFN)

INOPERABLE RADIOLOGICAL EFFLUENT INSTRUMENTATION REPORT

ENCLOSURE 3

INOPERABLE RADIOLOGICAL EFFLUENT INSTRUMENTATION REPORT This report is to comply with Browns Ferry Nuclear Plant Technical Specifications (TSs), Section 3.2.D.2 and 3.2.K.2.

TS Sections 3.2.D.2 and 3.2.K.2 require the exertion of best efforts to return inoperable radiological effluent monitoring instrumentation to an operable status within 30 days.

Failure to return the inoperable instruments to an operable status requires a

description in the next Semiannual Radioactive Effluent Release Report.

During the reporting period, July 1 through December 31, 1991; there was no airborne or liquid radiological effluent instrumentation inoperable for periods greater than 30 days.

The Effluent Monitors, which have been placed in "out-of-service" status with their effluent streams

isolated, are not applicable for this report.

During this period, Units 1 and 3 were defueled and Unit 2 operating.

Page 1 of 1

ENCLOSURE 4 TENNESSEE VALLEY AUTHORITY SEMIANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT BROGANS FERRY NUCLEAR PLANT (BFN)

CHANGES TO THE BFN OFFSITE DOSE CALCULATION MANUAL JULY THROUGH DECEMBER 1991

I e

ENCLOSURE 4 e

BFN Technical Specification 6.12.2 requires that changes to the Offsite Dose Calculation Manual (ODCM) be submitted to the commission with the semiannual Radioactive Effluent Release Report for the period in which the changes were made.

This report covers the period between July through December 1991.

During this period, no changes have been made to the ODCM.

.~

Page 1 of 1