ML18036A842

Semiannual Radioactive Effluent Release Rept,Browns Ferry Nuclear Plant,Jan-June 1992

ML18036A842
Person / Time
Site:	Browns Ferry
Issue date:	06/30/1992
From:	TENNESSEE VALLEY AUTHORITY
To:
Shared Package
ML18036A840	List: ML18036A839 ML18036A842 ML18036A844
References
NUDOCS 9209020222
Download: ML18036A842 (157)

Text

BROWNS FERRY NUCLEAR PLANT SEMIANNUALRADIOACTIVEEFFLUENT RELEASE REPORT JANUARY THROUGH JUNE 1992

~, -4voqoaoma eaosas PDR ADOCK 05000259 R

PDR'

r 5

f

ENCLOSURE I TENNESSEE VALLEY AUTHORITY SEMIANNUAL RADIOACTIVE EFFLUENT'ELEASE REPORT BROWNS FERRY NUCLEAR PLANT (BFN)

"THE RADIOLOGICAL IMPACT ASSESSMENT REPORT"

BFN Rad Impact Jan-June 1992 Page 1 of 72 Radiological Impact Assessment Browns Ferry Nuclear Plant January-June 1992 INTRODUCTIO Potential doses to individuals and the populatibn around Browns Ferry are calculated for each quarter as required in Section F.2 of the Radiological Effluent Manual.

Measured plant releases for the reporting 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, 1.111 and 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 FIRST HALF 1 2

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 Jan-June 1992 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.

BFN Rad Impact Jan-June 1992 Page 3 of 72.

e 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 orequal 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 Jan-June 1992 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 grounds 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.

The 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.

Quarterly joint frequency distributions (JFDs) are calculated for each release point using the appropriate levels of meteorological data.

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

BFN Rad Impact Jan-June 1992 Page 5 of 72 0

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 vertical temperature difference between 10 and 46 meters.

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

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 Jan-June 1992 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 First uarter 1

2 Gamma Air dose Beta Air dose 8.2E-04 mrad 3.3E-04 mrad SE at 5600 meters SE at 5600 meters Second uarter 1

2 Gamma Air dose 2.3E-03 mrad Beta Air dose 3.9E-03 mrad NNW at 1650 meters NHW at 1650 meters

BFN Rad Impact Jan-June 1992 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)

First uarter 19 2

Dose Location Total Body Skin 1.2E-03 mrem 1.7E-03 mrem SSE at 6706 meters SSE at 6706 meters Second uarter 1

2 Skin 6.4E-03 mrem 1.7E-02 mrem NNW at 1524 meters NNW at 1524 meters

BFN Rad Impact Jan-June 1992 Page 8 of 72 Or an Dose Airborne Effluents Internal doses to organs due to releases of airborne effluents are estimated for the inhalation, ground contamin'ation, 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 particulate 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)

First uarter 1 92 Organ Thyroid Age Group Child Dose

,6.0E-03 mrem Individual Pathway Contributions:

Vegetable Ingestion 2.7E-03 1

Beef Ingestion 2 6.1E-06 Inhalation 3.0E-03 Ground Contamination 3.1E-04 1

Milk Ingestion N/A Second uarter 19 2

Thyroid Child 1.7E-02 mrem Individual Pathway Contributions:

Vegetable Ingestion 8.3E-03 3

Beef Ingestion 7.6E-05 Inhalation3 7.8E-03 Ground Contamination 8.3E-04 3

Milk Ingestion N/A Maximum real receptor is located at 1829 meters in the NNW sector.

Calculated for the site boundary at 5600 meters in the SE sector.

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

Calculated for the site boundary at 1650 meters in the NNW sector.

BFN Rad Impact Jan-June 1992 Page 9 of 16 Dose Summa Airborne Effluents The table below gives a comparison of the calculated, quarterly doses to their respective limits.

Doses from Airborne Effluents First Half 1992 Browns Ferry Nuclear Plant Dose Pathway Airborne-Gamma Air Dose Quarter Dose 1

8.2E-04 mrad 2

2.3E-03 mrad Quarterly Limit*

5 mrad Percent of Limit 1

< 1%

Airborne-Beta Air Dose 1

3.3E-04 mrad 2

3.9E-03 mrad 10 mrad 1

1 Airborne-Max Organ Dose 1

6.0E-03 mrem 2

1.7E-02 mrem 7.5 mrem 1

< 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 p'ortion 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 Jan-June 1992 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,'he 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 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 55,387 ft /s for the first quarter of 1992 and 25,320 ft /s for the second 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 Jan-June 1992 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 ~ater 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)

First uarter 1 92 Organ Total Body Age Group Adult Dose 1.2E-02 mrem Individual Pathway Contributions:

Water Ingestion 8.8E-05 Fish Ingestion 8.8E-03 Recreation 2.7E-03 Liver Adult 1.7E-02 mrem Individual Pathway Contributions:

Water Ingestion 8.1E-05 Fish Ingestion 1.4E-02 Recreation 2.7E-03 Second uarter 19 2

Total Body Adult 4.7E-02 mrem Individual Pathway Contributions:

Water Ingestion 4.1E-04 Fish Ingestion 4.2E-02 Recreation 4.5E-03 Liver Teen 6.8E-02 mrem Individual Pathway Contributions:

Water Ingestion 3.2E-04 Fish Ingestion 6.4E-02 Recreation 4.5E-03

BFN Rad Impact Jan-June 1992 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 First Half 1992 Browns Ferry Nuclear Plant Dose Pathway Quarter Dose Quarterly Limit*

Percent of Quarterly Limit Liquid-Total Body Dose 1

1.2E-02 mrem 2

4.7E-02 mrem 1.5 mrem 1

3.1 Liquid-Max Organ Dose 1

1.7E-02 mrem 2

6.8E-02 mrem 5 mrem 1

1.4

%%d 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 Jan-June 1992 Page 13 of 72 POPULATION DOSES Population doses for highest exposed or'gan due to airborne effluents are calculated for an estimated 627,000 persons living within a 50-mile radius of the plant site.

Ingestion population doses are calculated assuming that each individual consumes milk, vegetables, and meat produced with the sector annulus in which he resides.

Doses from external pathways and inhalation are based on the 50-mile human population distribution.

Population doses for total body and the maximum exposed organ due to liquid 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 First Half 19 2

Total Body Dose Maximum Organ Dose (organ)

Liquid Airborne 8.3E-02 man-rem 4.6E-02 man-rem 1.3E-Ol man-rem (liver) 6.6E-02 man-rem (thyroid)

Second Quarter 1992 Liquid Airborne 4.0E-Ol man-rem 9.2E-02 man-rem 6.0E-01 man-rem (liver) 1.3E-01 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 Jan-June 1992 Page 14 of 72 DIRECT RADIATION O

External gamma radiation levels were me'asured by thermoluminescent dosimeters (TLDs) deployed around BFN.

The quarterly gamma radiation levels determined from these TLDs during this reporting period averaged approximately 18.4 mR/quarter at onsite stations and approximately 16.3 mR/quarter at offsite stations, or approximately 2.0 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.

e 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 any organ other than thyroid for the maximum individual is conservatively estimated by summing the following doses:

the total body air submersion dose for each quarter, the critical organ dose (for any organ other than the thyroid) from airborne 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 Jan-June 1992 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 1992 Browns Ferry Nuclear Plant Dose First Quarter Total Bod or an Or an Dose (mrem)

(except thyroid)

Total body air submersion dose 1.2E-03 Maximum organ dose (airborne) 6.0E-03 Total body dose (liquid) 1.2E-02 Maximum organ dose (liquid) 1.7E-02 Direct radiation dose O.OE-OO 6.4E-03 1.7E-02 4.7E-02 6.8E-02 O.OE-OO O.OE-OO O.OE-OO O.OE-OO O.OE-OO O.OE-OO Second Third Quarter Quarter Fourth Quarter O.OE-OO O..OE-OO O.OE-OO O.OE-OO O.OE-OO Total 3.6E-02 1.4E-01 O.OE-OO O.OE-OO Cumulative Total Dose (Total Body or other organ) mrem 1.8E-01 Total body air submersion dose Thyroid dose (airborne)

Total body dose (liquid)

Thyroid dose (liquid)

Direct radiation dose 1.2E-03 6.0E-03 1.2E-02 3.9E-03 O.OE-OO 6.4E-03 1.7E-02 4.7E-02 4.9E-03 O.OE-OO O.OE-OO O.OE-OO O.OE-OO O.OE-OO O.OE-OO O.OE-OO O.OE-OO O.OE-OO O.OE-OO O.OE-OO Total (Thyroid) 2.3E-02 7.5E-02 O.OE-OO O.OE-OO Cumulative Total Dose (Thyroid) mrem 9.8E-02

BFN Rad Impact Jan-June 1992 Page 16 of 72 CONCLUSION As a result of operation of Browns Ferry Nuclear Plant for the first half of 1992, 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'uidance'.

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 1992 Browns Ferry Nuclear Plant Liquid-Max Total Dose Organ Dose Thyroid Dose Pathway Airborne-Gamma air Dose Airborne-Beta air Dose Airborne-Max Organ Dose Liquid-Total Body Dose Dose 3.1E-03 mrad 4.2E-03 mrad 2.3E-02 mrem 5.9E-02 mrem 8.5E-02 mrem 9.8E-02 mrem Annual Limit 10 mrad 20 mradl 15 mrem 3 mrem 10 mrem2 75 mrem Percent of Annual Limit

< 1%

1

< 1%

2 1

< 1%

Total Dose Total Body or Organ other than Thyroid 1.8E-01 mrem 25 mrem 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.

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

BROWNS FERRY NUCLEAR PLANT FIRST HALF 1992 METEOROLOGICAL DATA

E Y I D DIRECTION FOR STABILITY CLASS A (DELTA T( -1.9 C/100 M)

BROWNS FERRY NUCLEAR PLANT JAN 1,

92 - MAR 31, 92 BFN Rad Imp Jan-June 19 Page 17 of 72 WIND DIRECTION CALM 0.6-1.4 1.5-3.4 WZND SPEED{MPH) 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4

>=24.5 TOTAI 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 0.051 0.204 0.0 0.051 0.051 0.0 0.0 0.0 0 ~ 0 0.357 0.0 0.051 0.0 0 '0.0 0.153 0.408 0.459 0.408 0.153 0.051 0.0 0.051 0.0 0.0 0.0 1.734 0.0 0.0 0.0 0.0 0.0 0.0 0.204

0. 051

0. 0.

0.102 0.051 0.0 0.051 0.0 0.0 0.0 0.459 0.510 0.408 0.051 0.0 0.0 0.0 0.0 0.0 0.0 0.051 0.051 0.0 0.0 0.051 0.153 0.153 1.428 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.051 0.0 0.051 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.510 0.459 0 '51 0.0 0.0 0.153

0. 612 0.561 0.612 0.306 0.204 0.051 0.102 0 '51 0.204 0.153 4.029 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 1994 TOTAL HOURS OF STABZLZTY CLASS A 79 TOTAL HOURS OF VALZD WIND DIRECTZON-WIND SPEED-STABILITY CLASS A 79 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 1961 TOTAL HOURS CALM 0

METEOROLOGICAL FACILITY: MET FACZLZTY 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

~

6.7 MPH DATE PRZNTED 04/30/92 NOTE: TOTALS AND SUBTOTALS ABOVE ARE OBTAINED FROM UNROUNDED NUMBERS

STABZLITY CLASS B

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

BROWNS FERRY NUCLEAR PLANT BFN Rad Im Jan-June 19 Page 18 of 72 JAN 1,

92 - MAR 31, 92 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 TOTAI N

HNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW HW 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 0.051 0.204 0.102 0.051 0.051 0.0 0.0 0.0 0.0 0.0 0.459 0.0 0.102 0.0 0.0 0.102 0.102 0.204 0.102 0.153 0.0 0.051 0.153 0.051 0.051 0.0 0.051 1.122 0.051 0.153 0.0 0.0 0.102 0.051 0.0 0.0 0.0 0.0 0.0 0.0 0.102 0.102 0.051 0.051 0.663 0.051 0.204 0.051 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.051 0.0 0.0 0.306 0.357 0.102 1 ~ 122 0.0 0.051 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.204 0.0 0.255 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0 '

0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.102 0.510 0.051 0.0 0.204 0.153 0.255 0.306 0.255 0.051 0.153 0.153 0.153 0.459 0.612 0.204 3.621 TOTAL HOURS OF VALID STABILITY OBSERVATZOHS 1994 TOTAL HOURS OF STABILITY CLASS B

72 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABII ITY CLASS B

71 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 1961 TOTAL HOURS CALM 0

METEOROLOGICAL FACILITY: MET FACZLZTY LOCATED 1.3 KM ESE OF BROWNS PERRY NUCLEAR PLANT STABILITY BASED ON LAPSE RATE MEASURED BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DZRECTION MEASURED AT THE 10.42 METER LEVEL DATE PRINTED: 04/30/92 MEAN WIND SPEED M

7. 1 MPH NOTE:

TOTALS AND SUBTOTALS ABOVE ARE OBTAINED PROM UNROUNDED NUMBERS

STABILITY Cr.ASS C

(-1.7(

DELTA-T< -1.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT BFN Rad Im Jan-June 19 Page 19 of 72 JAN 1,

92 - MAR 31, 92 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 SUBTOTAI 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.204 0.051 0.153 0.051 0.0 0.0 0.0 0.0 0.0 0.459 0.051 0.0 0.051 0.0 0.051 0.051 0.102 0.102 0.051 0.102 0.0 0.0 0.051 0.0 0.0 0.0 0.612 0.0

0. 051 0.0 0.0 0.0

0. 051 0.051 0.0 0.0 0.0 0.0 0.051 0.051 0.204 0.102 0.051 0.612 0.051 0.255 0.0

0. 051 0.0 0.102 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.357 0.306 0.204 1.326 0.0

0. 051 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.153 0.0 0.204 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.051 0.0 0.0 0.051 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.102 0.357 0.051 0.051 0.051 0.204 0.153 0.306 0.102 0.255 0.051 0.051 0.102 0.612 0.561 0.255 3.264 TOTAL HOURS OF VALID STABZLITY OBSERVATIONS TOTAL HOURS OP STABILITY CLASS C

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

TOTAL HOURS OF VALZD WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS TOTAL HOURS CALM 1994 64 64 1961 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 7.5 MPH DATE PRZNTED: 04/30/92 NOTE:

TOTALS AND SUBTOTALS ABOVE ARE OBTAINED FROM UNROUNDED NUMBERS

STABILITY CLASS D

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

BROWNS FERRY NUCLEAR PLANT BFN Rad Im Jan-June 1

Page 20 of 72 JAN 1,

92 MAR 31, 92 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

>~24.5 TOTAL H

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW SUBTOTAL 0.000

0. 001 0.001 0.002 0.002 0.005 0.010 0.005 0.007 0.004 0.002 0.005 0.002 0.002 0.001 0.001 0.051 0.0 0.051 0.051 0.051 0.0 0.051 0.102 0.0 0.051 0.051 0.0 0.051 0.0 0.0 0.0 0.0 0.459 0.051 0.102 0.051 0.204 0.255 0.510 0.969 0.510 0.663 0.357 0.255 0.459 0.255 0.204 0.102 0.153 5.099 0.561 0.459 0.459 0.102 0.408 0 '61 0.663 0.510 0.612 0.408 0.255 0.459 0.969 0.102 0.306 0.306 7.139 0.663 0.357 0.357 0.357

0. 102 0.153 0.306 0.102 0.204 0.0 0.051 0.153 0.612 0.765 0.408 0.255 4.844

1. 479 0.969 0.561 0.102 0.0 0.102 0.051 0.051 0.102 0.0 0.051 0.255 0.255 1.020 1.938 1.887 8.822

0. 357 0.357 0.051 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.357 0.051 1.122 1.785 0.510 4.589 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.102 0.306 0.0 0.408 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 3.111 2.296 1.531 0.818 0.767 1.382 2.101 1.178 1.638 0.820 0.614 1.738 2.144 3.317 4.845 3.112 31.412 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 1994 TOTAL HOURS OF STABILZTY CLASS D

639 TOTAL HOURS OF VALID WIND DZRECTZON-WIND SPEED-STABILZTY CLASS D

616 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 1961 TOTAL HOURS CALM 1

METEOROLOGICAL FACZLITY: MET FACILITY LOCATED 1.3 KM ESE OF BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON LAPSE RATE MEASURED BETWEEN 10 '3 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT THE 10 '2 METER LEVEL DATE PRINTED: 04/30/92 MEAN WZND SPEED

~

7.6 MPH NOTE: TOTALS AND SUBTOTALS ABOVE ARE OBTAINED FROM UNROUNDED NUMBERS

JOINT PERCENTAGE FREQUENCIES OF SPEED BY ZN DZRECTZ N F R

STABZLZTY CLASS E

(-0.5<

DELTA-T<~ 1.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT BFN Rad Im Jan-June 1

Page 21 of 72 JAN 1,

92 MAR 31, 92 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 0.009 0.007 0.005 0.005 0.011 0.013 0.015 0.022 0.013 0.010 0.011 0.005 0.006 o.oo4 0.007 0.009 0.153 0.102 0.051 0.102 0.204 0.153 0.102 0.357 0.714 0.255 0.255 0.510 0.204 0.102 0.051 0.153 0.153 3.468 0.867 0.714 0.459 0.357 0.969 1.224 1.275 1.632 1.122 0.816 0.612 0.357 0.561 0.357 0.612 0.765 12.698 0.612 0.765 0.714 0.204 0.816 0.867 1.428 1.326 1.020 0.255 0.357 0.561 0.612 0.306 0.306 0.765 10.913

0. 459 0.714 0.204 0.102 0.204 0.255 0.204 0.255 0.102 0.0 0.051 0.051 0.255 0.306 0.357 0.918 4.437 0.306 0.306 0.255

0. 051 0.0 0.0 0.0 0.255 0 ~ 255 0.051 0.102 0.102 0.102 0.510 0.357 0.459 3.111 0.0 0.051 0.0 0.0 0.0 0.0 0.0 0.051 0.0

0. 051 0.051 0.051 0.0 0.0 0.0 0.0 0.255 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0 ~ 0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0 '

0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 2.355 2.608 1.739 0 ~ 923 2.152 2.460 3.279 4.255 2.767

1. 438 1.693 1.331 1.638 1.534 1.792 3.068 35.033 TOTAL HOURS OF VALID STABZLZTY OBSERVATIONS 1994 TOTAL HOURS OF STABZIITY CLASS E

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

687 TOTAL HOURS OF VALID WIND DZRECTZON-WIND SPEED-STABILITY OBSERVATIONS 1961 TOTAL HOURS CALM 3

METEOROLOGICAL FACZIITY: MET FACILITY LOCATED 1.3 KM ESE OF BROWNS FERRY NUCLEAR PLANT STABZLITY 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: 04/30/92 MEAN WIND SPEED

~

4.1 MPH NOTE:

TOTALS AND SUBTOTALS ABOVE ARE OBTAINED FROM UNROUNDED NUMBERS

STABZLITY CLASS F

( 1. 5<

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

BROWNS FERRY NUCLEAR PLANT BFN Rad Im Jan-June 19 Page 22 of 72 JAN 1,

92 MAR 31, 92 WIND DIRECTION 0.6-1.4 1.5-3.4 WZND SPEED[MPH) 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4

>a24.5 TOTAL H

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW SUBTOTAL 0.030 0.035 0.006 0.011 0.039 0.050 0.046 0.068 0.028 0.006 0.0 0.006 0.0 0.006 0.018 0.009 0.357 0.102 0.204 0.051 0.051 0.102 0.153 0.255 0 '08 0.102

0. 051 0.0 0.0 0.0 0.0 0.051 0.0 1.530 0.714 0.765 0.102 0.255 0 '69 1.224 1.020 1.479 0.663 0.102 0.0 0 '53 0.0 0.153 0.459 0.255 8.312 0.510 0.867 0.306 0.459 0.714 0.102 0.051 0.306 0.306 0.0 0.051 0.051 0.102 0.102 0.153 0.714 4.793 0.204 0.102 0.102 0.0 0.0 0.0 0.051 0.153 0.153 0.0 0.0 0.0 0.0 0.0 0.102 0.510 1.377 0.102 0.051 0.051 0.0 0.0 0.051 0.0 0.0 0.0 0.0 0.051 0.0 0.0

0. 051 0 F 051 0.0 0.408 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0 '

0.0 0.0 0.0 0.0 0.0 0.0 1.661 2 '24 0.617 0.776 1.824 1.580 1.423 2.414 1.252 0.159 0.102 0.210 0.102 0.312 0.834 1.488 16.777 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 1994 TOTAL HOURS OF STABILZTY CLASS F

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

329 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 1961 TOTAL HOURS CALM 7

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 DATE PRZHTED: 04/30/92 MEAN WIND SPEED

~

3.2 MPH NOTE:

TOTALS AND SUBTOTALS ABOVE ARE OBTAINED FROM UNROUNDED NUMBERS

STABILITY CLASS G

(DELTA T

> 4.0 C/100 M)

BROWNS FERRY NUCLEAR PLANT JAN 1i 92 MAR 31'2 BFN Rad Im Jan-June 1

Page 23 of 72 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 '-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 0.019

0. 071 0.011 0.015 0.022 0.033 0.037 0.071 0.026 0.007 0.0 0.007 0.007 0.007 0.011 0.011 0.357 0.051 0.306 0.102 0.0 0.051 0.102 0.153 0.153 0.255 0.102 0.0 0.102 0.051 0.051

0. 153

0. 051 1.683 0.204 0.663 0.051 0.204 0.255 0.357 0.357 0.816 0.102 0.0 0.0 0.0 0.051 0.051 0.0 0.102 3.213 0.102 0.153 0.051 0.0 0.051 0.0 0.0

0. 051 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.153 0.561 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.051 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.051 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0 '

0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.376 1.193 0.215 0.219 0.379 0.492 0.547 1.091 0.434

0. 109 0.0 0.109 0.109 0.109

0. 164

0. 317 5.864 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 1994 TOTAL HOURS OF STABILITY CLASS G

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

115 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 1961 TOTAL HOURS CALM 7

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 WZND SPEED AND DIRECTION MEASURED AT THE 10.42 METER LEVEL DATE PRINTED: 04/30/92 MEAN WIND SPEED

~

2.0 MPH NOTE:

TOTALS AND SUBTOTALS ABOVE ARE OBTAINED FROM UNROUNDED NUMBERS

SPI IT JOINT STABILITY CLASS A

(DE A T<~-1.9 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 1

OF 2

GROUND LEVEL RELEASE MODE JAH 1,

92 - MAR 31, 92 BFN Rad Im Jan-June 1

Page 24 of 72 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 0.003 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.003 0.0 0.0 0.0 0.0 0.0 0.009 0.022 0.024 0.008 0.006 0.006 0.0 0.001 0.0 0.0 0.0 0.076 0.0 0.0 0.0 0.0 0.0 0.0 0.021 0.011 0.0 0.019 0.010 0.0 0.002 0.0 0.0 0.0 0.063 0.082 0.059 0.009 0.0 0.0 0.0 0.0 0.0 0.0 0.022 0.034 0.0 0.0 0.008 0.026 0.026 0.266 0.0 0.0 0.0 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 0.0 0.082 0.059 0.009 0.0 0.0 0.009 0.043 0.035 0.011 0.047 0.050 0.0 0.003 0.008 0.037 0.026 0.418 TOTAL HOURS OF VALID OBSERVATIONS 1966.000 TOTAL HOURS OF GROUND LEVEL RELEASE 212.240 TOTAL HOURS OF STABILITY CLASS A 8.210 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS A 8.210 METEOROLOGICAL FACILITY:

MET FACILITY LOCATED 1.3 KM ESE OF BROWNS FERRY NUCLEAR PLANT STABZLITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WZND DIRECTION MEASURED AT 10.42 METER LEVEL WIND SPEED MEASURED AT 10.42 METER LEVEL EFFLUENT VELOCITY ~ 12.60 M/S DATE PRINTED: 04/30/92 NOTE:

TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS

SPLIT JOZNT PERCENTAGE FREQUENCZE ND SPEED BY WIND DIRECTION FOR STABILITY CLASS B

(-1.9<

DELTA T<~-1.7 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 1

OF 2

GROUND LEVEL RELEASE MODE JAN 1,

92 - MAR 31, 92 BFN mpact Jan-1992 Page 25 of 72 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 '

>=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 0.004 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.004 0.0 0.001 0.0 0.0 0.0 0.004 0.013 0.0 0.0 0.0 0.001 0.003 0.001 0.0 0.0 0.0 0.021 0.005 0.013 0.0 0.0 0.006 0.008 0.0 0.0 0.0 0.0 0.0 0.0 0.011 0.007 0.003 0.003 0.055 0.009 0.033 0.006 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.010 0.0 0.0 0.051 0.053 0.014 0.176 0.0 0 '10 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.044 0.0 0.054 0.0 0.0 0.0 0.0 0.0 0.0 0 '

0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 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 0.056 0.006 0.0 0.006 0.012 0.013 0.004 0.0 0.0 0.011 0.003 0.011 0.058 0.101 0.016 0.310 TOTAL HOURS OF VALID OBSERVATIONS 1966.000 TOTAL HOURS OF GROUND LEVEL RELEASE 212.240 TOTAL HOURS OF STABILITY CLASS B

6.100 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS B

6.100, METEOROLOGICAL FACZLZTY:

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 LEVEL EFFLUENT VELOCITY ~ 12.60 M/S DATE PRZNTED: 04/30/92 NOTE:

TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS

SPLIT JOINT PERCENTAGE FRE UENCIE IND SPEED BY WIND DIRECTION FOR STABILITY CLASS C

(-1.

DELTA T<~-1.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 1

OF 2

GROUND LEVEL RELEASE MODE JAN 1,

92 MAR 31, 92 BFN Rad Im Jan-June 1

Page 26 of 7

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

>~24.5 TOTAL N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW 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 0.005 0.0 0.0 0.0 0.0 0.0 0.0 0.005 0.0 0.0 0.001 0.0 0.0 0.0 0.004 0.0 0.0 0.0 0.0 0.0 0.002 0.0 0.0 0.0 0.007 0.0 0.006 0.0 0.0 0.0 0.007 0.011 0.0 0.0 0.0 0.0 0.006 0.006 0.011 0.005 0.005 0.054

0. 010 0.040 0.0 0.006 0.0 0.018 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.048 0.047 0.027 0.196 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 0.030 0.0 0 '40 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.038 0.0 0.0 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 0.0 0.0 0.0 0.010 0.055 0.001 0.006 0.0 0.025 0.015 0.0 0.0 0.005 0.0 0.006 0.008 0.097 0.082 0.032 0.339 TOTAL HOURS OF VALID OBSERVATIONS 1966.000 TOTAL HOURS OF GROUND LEVEL RELEASE 212.240 TOTAL HOURS OF STABILITY CLASS C

9.550 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS C

6.670 METEOROLOGICAL FACILITY:

MET FACZLITY 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 EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 04/30/92 NOTE:

TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS

IN PERCENTAGE FREQUENCZE IND DI BFN Rad Imp Jan-June 19 STABZLITY CLASS D

(-1. 5(

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

BROWNS FERRY NUCLEAR PLANT PART 1

OF 2

GROUND LEVEL RELEASE MODE JAN 1,

92 MAR 31, 92 Page 27 of 72 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 0.003 0.008 0.020 0.023 0.015 0.015 0.012 0.005 0.001 0.0 0.0 0.0 0.102 0.008 0.012 0.008 0.003 0.015 0.041 0.060 0.076 0.056 0.041 0.024 0.033 0.052 0.002 0.008 0.004 0.444 0.063 0.040 0.028 0.031 0.013 0.022 0.055 0.030 0.035 0.007 0.008 0.023 0.071 0.062 0.024 0.028 0.538 0.252 0.161 0.093 0.013 0.0 0.019 0.009 0.009 0.046 0.0 0.009 0.066 0.044 0.167 0.325 0.323 1.536 0.074 0.100 0.010 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.314 0.037 0.339 0.537 0.105

1. 515 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.071 0.244 0.0

0. 315 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.398 0.313 0.139 0.047 0.031 0.090 0.143 0.138 0.152 0.063 0.053 0.440 0.205 0.641 1.138 0.460

4. 450 TOTAL HOURS OF VALID OBSERVATIONS 1966.000 TOTAL HOURS OF GROUND LEVEL RELEASE 212. 240 TOTAI HOURS OF STABILITY CLASS D

917.700 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS D

87.480 METEOROLOGICAL FACILITY:

MET FACZLZTY 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 EFFLUENT VELOCITY ~ 12. 60 M/S DATE PRINTED: 04/30/92 NOTE:

TOTALS AND SUBTOTALS ARE OBTAZNED FROM UNROUNDED NUMBERS

STABZLZTY CLASS E

(-0.5<

DELTA T<~ 1.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 1

OF 2

GROUND LEVEL RELEASE MODE JAN 1,

92 MAR 31, 92 BFN Rad Im Jan-June 19 Page 28 of 72 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 0.001 0.0 0.0 0.001 0.004 0.004 0.003 0.010 0.0 0.0 0.0 0.0 0.0 0.021 0.013 0.015 0.013 0.012 0.033 0.042 0.083 0.130 0.053 0.035 0.029 0.001 0.025 0.010 0.003 0.007 0.503 0.044 0.061 0.072 0.022 0.097 0.103

0. 188 0.243 0.145 0.038 0.043 0.056 0.057 0.029 0.021 0.050 1.270 0.065 0.097 0.028 0.016 0.030 0.037 0.034 0.055 0.021 0.0 0.015 0.009 0.040 0.039 0.047 0.132 0.664 0.053 0.054 0.045 0.009 0.0 0.0 0.0 0.153 0.203 0.016 0.020 0.019 0.020 0.085 0.066 0.079 0.823 0.0 0.017 0.0 0.0 0.0 0.0 0.0 0.008 0.0 0.051 0.051 0.044 0.0 0.0 0.0 0.0 0.171 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0 '74 0.244 0.157 0.060 0.160 0.182 0.306 0.593 0.426 0.143 0.168 0 '30 0.143 0.163 0.136 0.268 3.452 TOTAL HOURS OF VALID OBSERVATIONS 1966.000 TOTAL HOURS OF GROUND LEVEL RELEASE 212.240 TOTAL HOURS OF STABZLITY CLASS E

776.500 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS E

67.870 METEOROLOGICAL FACILITY:

MET FACZLZTY 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 EFFLUENT VELOCITY = 12.60 M/S DATE PRZNTED: 04/30/92 NOTE:

TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS

STABILITY CLASS F

( 1-5<

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

BROWNS FERRY NUCLEAR PLANT PART 1

OF 2

GROUND LEVEL RELEASE MODE JAN 1,

92 MAR 31, 92 BFN Rad Imp Jan-June 19 Page 29 of 72 WIND DIRECTION CALM 0.6-1.4 1.5-3.4 WIND SPEED(MPH) 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4

>~24.5 TOTAL N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW SUBTOTAL 0.000 0.000 0.000 0.000 0.000 0.001 0.001 0.004 0.002 0.000 0.0 0.000 0.0 0.000 0.000 0.000 0.010 0.0 0.0 0.0 0.0 0.0 0.0 0.001 0.009 0.007

~ 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.017 0.016 0.021 0.004 0.014 0.021 0.066 0.068 0.180 0.072 0.006 0.0 0.017 0.0 0.003 0.012 0.006 0.505

0. 051 0.101 0.041 0.057 0.071 0.011 0.009 0.081 0.054 0.0 0 '10 0.007 0.013 0.010 0.019 0.085 0.621 0.032 0.016 0.017 0.0 0.0 0.0 0.021 0.067 0.036 0.0 0.0 0.0 0.0 0.0 0.014 0.082 0.283 0.020 0.010 0.009 0.0 0.0 0.010 0.0 0.0 0.0 0.0 0.026 0.0 0.0 0.009 0.009 0.0 0.094 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.119 0.148 0.071 0.071 0.093 0.088 0.100 0.340 0.170 0.006 0.036 0.025 0.013 0.022 0.054 0.173 1.529 TOTAL HOURS OF VALID OBSERVATIONS 1966.000 TOTAL HOURS OF GROUND LEVEL RELEASE 212.240 TOTAL HOURS OF STABILITY CLASS F

178.660 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS F

30.060 METEOROLOGICAL FACILITY:

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 DZRECTZON MEASURED AT 10.42 METER LEVEL WIND SPEED MEASURED AT 10.42 METER LEVEL EFFLUENT VELOCITY ~ 12.60 M/S DATE PRINTED: 04/30/92 NOTE:

TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUHBERS

STABILITY CLASS G

(DELTA T

> 4. 0 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 1

OF 2

GROUND LEVEL RELEASE MODE JAN 1,

92 MAR 31, 92 BFN Rad Im Jan-June 1

Page 30 of 72 WIND DIRECTION CALM 0.6-1.4

l. 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 0.003 0.0 0.0 0.0 0.0 0.0 0.012 0.005 0.004 0.0 0.0 0.004 0.0 0.0 0.003 0.0 0.031 0.009 0.0 0.0 0.0 0.004 0.010 0.022 0.110 0.009 0.0 0.0 0.0 0.004 0.0 0.0 0.0 0.167 0.007 0.019 0.007 0.0 0.008 0.0 0.0 0.011 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.021 0.073 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.027 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.027 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.019 0.019 0.007 0.0 0.012 0.010 0.034 0.126 0.040 0.0 0.0 0.004 0.004 0.0 0.003 0.021 0.298 TOTAL HOURS OF VALID OBSERVATIONS 1966.000 TOTAL HOURS OF GROUND LEVEL RELEASE 212.240 TOTAL HOURS OF STABZLZTY CLASS G

69.280 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS G

5.850 METEOROLOGICAL FACILITY:

MET FACILITY LOCATED 1.3 KM ESE OF BROWNS FERRY NUCIEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND DIRECTION MEASURED AT

10. 42 METER LEVEL WIND SPEED MEASURED AT 10.42 METER LEVEL EFFLUENT VELOCITY ~ 12.60 M/S DATE PRZNTED: 04/30/92 NOTE:

TOTALS AND SUBTOTALS ARE OBTAZNED FROM UNROUNDED NUMBERS

STABILITY CLASS A (DE T<~-1.9 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 2

OF 2

ELEVATED RELEASE MODE JAN 1,

92 MAR 31, 92 BFN Rad Im Jan-June 1

Page 31 of 72 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 0.0 TOTAL HOURS OF VALID OBSERVATIONS TOTAL HOURS OF ELEVATED RELEASES TOTAL HOURS OF STABILITY CLASS A TOTAL HOURS OF ELEVATED STABZLZTY CLASS A 1966.000 1753.760 8.210 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 WIND DIRECTION MEASURED AT 45.67 METER LEVEL WZND SPEED MEASURED AT 45.67 METER LEVEL EFFLUENT VEIOCITY = 12.60 M/S DATE PRINTED: 04/30/92 NOTE:

TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS

IN DZR TZ N FOR STABILITY CLASS B

(-1.

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

BROWNS FERRY NUCLEAR PLANT PART 2

OF 2

ELEVATED RELEASE MODE JAN 1 i 92 MAR 31 g 92 BFN Rad Em Jan-June 1

Page 32 of 7

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

0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 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 OBSERVATIONS TOTAL HOURS OF ELEVATED RELEASES TOTAL HOURS OF STABIIITY CLASS B

TOTAL HOURS OF ELEVATED STABILITY CLASS B

1966.000 1753.760 6.100 0.0 METEOROLOGICAL FACILITY:

MET FACILITY LOCATED 1.3 KM ESE OF BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 45 '0 AND 89.60 METERS WIND DZRECTZON MEASURED AT 45.67 METER LEVEL WIND SPEED MEASURED AT 45.67 METER LEVEL EFFLUENT VELOCITY ~ 12.60 M/S DATE PRINTED: 04/30/92 NOTE:

TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS

0

)

f

STABILITY CLASS C

(-1.

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

BROWNS FERRY NUCLEAR PLANT PART 2

OF 2

ELEVATED RELEASE MODE JAN 1,

92 - MAR 31, 92 BFN Rad Im Jan-June j.

Page 33 of 7

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 0.051 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.051 0.0 0.0 0.0 0.0 0.0 0.0 0.051 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.051 0.0 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 0.045 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 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.102 0.0 0.0 0.0 0.0 0.0 0.045 0.0 0.0 0.0 0.146 TOTAL HOURS OF VALID OBSERVATIONS TOTAL HOURS OF ELEVATED RELEASES TOTAL HOURS OF STABILITY CLASS C

TOTAL HOURS OF ELEVATED STABILITY CLASS C

1966.000 1753.760 9.550 2.880 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 LEVEL WIND SPEED MEASURED AT 45.67 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 04/30/92 NOTE:

TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS

SPLZT JOZNT PERCENTAGE FRE UEN IND EE BFN Rad I Jan-June 1

Page 34 of STABZZ ITY CLASS D

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

BROWNS FERRY NUCLEAR PLANT PART 2

OF 2

ELEVATED RELEASE MODE JAN 1,

92 MAR 31, 92 WIND DIRECTION CALM 0.6-1.4 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

SSW SW WSW W

WNW NW NNW SUBTOTAL 0.001 0.002 0.002 0.002 0.0 0.006 0.002 0.008 0.007 0.005 0.003 0.001 0.003 0.0 0.003 0.003 0.051 0.0 0.0 0.0 0.051 0.0 0.0 0.0 0.102 0.0 0.0 0.0 0.0 0.0 0.0 0.051 0.0 0.203 0.051 0.102 0.102 0.051 0.0 0.254 0.102 0.254 0.305 0.203 0.153 0.051 0.153 0.0 0.102 0.153 2.035 0.509 0.458 0.203 0.102 0.102 0.509 0.712 0.254 0.356 0.153 0.458 0.203 0.203 0.102 0.102 0.407 4.832 0.341 0.886 0.445 0.193 0.488 0.736 0.392 0.292 0.490 0.191 0.244 0.881 0.643 0.777 0.489 0.391 7.879 1.378 2.188 0.355 0.364 0.089 0.678 0.942 0.357 0.534 0.940 0.668 0.493 0.949 1.554 0.967 1.630 14.086 1.368 1.371 0.334 0.0 0.0 0.166 0.662 1.033 0.417 0.250 0.165 0.247 0.082 1.325 2.191 1.739 11.350 0.040 0.166 0.0 0.0 0.0 0.0 0.072 0.162 0.032 0.099 0.081 0.040 0.014 0.466 0.489 0.039 1.701 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.005 0.007 0.0 0.049 0.0 0.016 0.015 0.0 0.091 3.689 5.173 1.441 0.763 0.679 2.348 2.885 2.462 2.144 1.847 1.773 1.966 2.048 4.241 4.409 4.362 42.228 TOTAL HOURS OF VALID OBSERVATZONS TOTAL HOURS OF ELEVATED RELEASES TOTAL HOURS OF STABILITY CLASS D

TOTAL HOURS OF ELEVATED STABILITY CI ASS D

1966.000 1753.760 917.700 830.220 METEOROLOGICAL FACZLZTY:

MET FACILITY LOCATED 1. 3 KM ESE OF BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 45.30 AND 89 '0 METERS WIND DIRECTION MEASURED AT 45.67 METER LEVEL WIND SPEED MEASURED AT 45.67 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 04/30/92 NOTE:

TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS

0

SPLIT JOINT PERCENTAGE FREQUENCIE ND SPEED BY WIND DIRECTION FOR STABILZTY CLASS E

(-0.

DELTA T<~ 1.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 2

OF 2

ELEVATED RELEASE MODE JAN 1,

92 MAR 31, 92 BFN Rad Im Jan-June 1

Page 35 of 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 0.002 0.005 0.003 0.001 0.004 0.001 0.003 0.006 0.004 0.004 0.004 0.002 0.004 0.001 0.001 0.004 0.051 0.051 0.0 0.153 0.0 0.051 0.0 0.0 0.0 0.051 0.0 0.051 0.051 0.0 0.0 0.0 0.153 0.560 0.102 0.356 0.051 0.051 0.254 0.102 0.203 0.407 0.203 0.305 0.203 0.102 0.254 0.102 0.102 0.153 2.950 0.712 0.305 0.407 0.102 0.407 0.509 1.017 0.560 0.509 0.661 0.458 0.305 0.356 0.153 0.203 0.203 6.867 0.340

0. 585 0.837 0.295 0.342 0.932 1.313 0.692 0.635 0.394 0.533 0.344 0.194 0.199 0.148 0.336 8.117 0.620 1.019 1.257 0.409 0.754 1.260 1.700 0.932 1.025 0 '49 0.357 0.359 0.859 0.724 0.627 1.363 13.716 0.124 0.082 0.168 0.042 0.0 0.0 0.418 0.989 0.374 0.123 0.082 0.206 0.292 0.082 0 '33 0.210 3.526 0.0 0.0 0.0 0.0 0.0 0.0 0.058 0.093 0.040 0.0 0.025 0.025 0.0 0.0 0.0 0.0 0.241 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.017 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.017 1.951 2.352 2.875 0.899 1.813 2.804 4.713 3.695 2.841 1.937 1.713 1.394 1.960 1.261 1.414 2.422 36.044 TOTAL HOURS OF VALID OBSERVATIONS TOTAL HOURS OF ELEVATED RELEASES TOTAL HOURS OF STABILITY CLASS E

TOTAL HOURS OF ELEVATED STABZI,ZTY CLASS E

1966.000 1753.760 776 '00 708.630 METEOROLOGICAL FACIIITY:

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 DZRECTZON MEASURED AT 45 67 METER LEVEL WIND SPEED MEASURED AT 45.67 METER LEVEL EFFLUENT VELOCITY = 12-60 M/S DATE PRINTED: 04/30/92 NOTE TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS

IT JO ERCENTAGE FRE UENCZE STABILITY CLASS F

( 1.

DELTA T<=

4

~ 0 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 2

OF 2

ELEVATED RELEASE MODE JAN 1,

92 MAR 31 ~

92 BFN Rad Im Jan-June 1

Page 36 of 7

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 SUBTOTAI 0.0 0.0 0.0 0.007 0.003 0.007 0.007 0.010 0.0 0.0 0.007 0.0 0.0 0.0 0.003 0.007 0.051 0.0 0.0 0.0 0.051 0.0 0.0 0.051 0.0 0.0 0.0 0.102 0.0 0.0 0.0 0.0 0.0 0.203 0.0 0.0 0.0 0.051 0.051 0.102 0.051 0.153 0.0 0.0 0.0 0.0 0.0 0.0 0.051 0.102 0.560 0.051 0.0 0.051 0.102 0.153 0.153 0.407 0.153 0.203 0.102 0.305 0.0 0.0 0.051 0.0 0.102 1.831 0.150 0.051 0.145 0.049 0.047 0.147 0.636 0.096 0.0 0.148 0.197 0.145 0.0 0.049 0.0 0.051

1. 912 0.224 0.085 0.269 0.130 0.264 0.774 0.321 0.270 0.043 0 '91 0.090 0.0 0.095 0.045 0.0

0. 176 2.876 0.0 0.0 0.083 0.042 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.125 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0 '25 0.136 0.549 0.430 0.519 1 ~ 182

1. 473 0.681 0.246 0.340 0 ~ 701 0.145 0.095 0.144 0.054 0.437

7. 558 TOTAL HOURS OF VALID OBSERVATIONS TOTAL HOURS OF ELEVATED RELEASES TOTAL HOURS OF STABILITY CLASS F

TOTAL HOURS OF ELEVATED STABILITY CLASS F

1966.000 1753.760 178.660 148.600 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 WIND DIRECTION MEASURED AT 45.67 METER LEVEL WIND SPEED MEASURED AT 45.67 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRZNTED: 04/30/92 NOTE:

TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS

STABILITY CLASS G

(DE T

> 4.0 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 2

OF 2

ELEVATED RELEASE MODE JAN 1,

92 - MAR 31, 92 BFN Rad Imp Jan-June 19 Page 37 of 7

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

>R24.5 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 0.051 0.051 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.102 0.102 0.0 0.0 0.0 0.102 0.153 0.153 0.305 0.051 0.051 0.102 0.0 0.051 0.051 0.051 0.0 1.170 0.0 0.0 0.0 0.051 0.0 0.203 0.356 0.051 0.203 0.051 0.0 0.0 0.051 0.0 0.0 0.0 0.966 0.0 0.0 0.051 0.049 0.0 0.098 0.194 0.0 0.0 0.0 0.099 0.0 0.0 0.048 0.0 0.0 0.539 0 '

0.0 0.045 0.225 0.044 0.0 0.0 0.093 0.0 0.0 0.0 0 '

0.0 0.0 0.0 0.0 0.407 0.0 0.0 0.0 0.042 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.042 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.102 0.0 0.147

0. 418 0.145 0.454 0.703 0.449 0.254 0.102 0.200 0.0 0.102 0.099 0.051 0.0 3.226 TOTAL HOURS OF VAZID OBSERVATIONS TOTAL HOURS OF ELEVATED RELEASES TOTAL HOURS OF STABILITY CLASS G

TOTAL HOURS OF ELEVATED STABILITY CLASS G

1966.000 1753.760 69.280 63 '30 METEOROLOGICAL FACILITY:

MET FACILITY LOCATED 1.3 KM ESE OF BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 45.30 AND 89 '0 METERS WIND DIRECTION MEASURED AT 45 '7 METER LEVEZ WIND SPEED MEASURED AT 45.67 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 04/30/92 NOTE:

TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS

STABILITY CLASS A

( DELT

<=-1. 9 C/100 M)

BROWNS FERRY NUCLEAR PLANT JAN 1,

92 MAR 31, 92 BFN Rad Imp Jan-June 1

Page 38 of 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 0.0 TOTAL HOURS OF VALID STABILITY OBSERVATZONS 1995 TOTAL HOURS OF STABILITY CLASS A 0

TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS A 0

TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABZLZTY OBSERVATIONS 1979 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 45.30 AND 89.59 METERS WIND SPEED AND DZRECTION MEASURED AT THE 92.63 METER LEVEZ DATE PRINTED: 04/30/92 MEAN WIND SPEED

~

0.0 MPH NOTE TOTALS AND SUBTOTALS ABOVE ARE OBTAINED FROM UNROUNDED NUMBERS

STABZIITY CLASS B

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

BROWNS FERRY NUCLEAR PLANT BFN Rad Imp Jan-June 1

Page 39 of 7

JAN 1, 92>>

MAR 31, 92 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 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 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 VALID STABILITY OBSERVATIONS TOTAL HOURS OF STABILITY CLASS B

TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABZLITY CLASS B

TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS TOTAL HOURS CALM 1995 0

0 1979 0

METEOROLOGICAL FACILITY: MET FACILITY LOCATED 1.3 KM ESE OF BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON IAPSE RATE MEASURED BETWEEN 45.30 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT THE 92.63 METER LEVEL DATE PRINTED: 04/30/92 MEAN WIND SPEED M

0.0 MPH NOTE:

TOTALS AND SUBTOTALS ABOVE ARE OBTAINED FROM UNROUNDED NUMBERS

STABZLZTY CLASS C

t-1.7 ELTA-T<~-1.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT BFN Rad Imp Jan-June 1

Page 40 of JAN 1,

92 - MAR 31, 92 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 D.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 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.051 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.051 0.0 0.0 0.0 0.0 0.0 0.0 0.051 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.051 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.051 0.0 0.0 0.0

0. 051 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0 '

0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 O.D 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.101 0.0 0.0 0.0 0.0 0.0 0.051 0.0 0.0 0.0 0.152 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 1995 TOTAL HOURS OF STABILITY CLASS C

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

3 TOTAL HOURS OF VALID WIND DZRECTZON-WIND SPEED-STABILITY OBSERVATZONS 1979 TOTAL HOURS CALM 0

METEOROLOGICAL FACZLZTY: MET FACZLITY LOCATED 1.3 KM ESE OF BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON IAPSE RATE MEASURED BETWEEN 45-30 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT THE 92.63 METER LEVEL DATE PRINTED: 04/30/92 MEAN WIND SPEED

~

7.9 MPH NOTE:

TOTALS AND SUBTOTALS ABOVE ARE OBTAINED FROM UNROUNDED NUMBERS

INT ERCE TAG REQUENCIES OF PEED BY WIND DIRECTION FOR STABILITY CLASS D

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

BROWNS FERRY NUCLEAR PLANT JAN 1,

92 MAR 31, 92 BFN Rad Emp Jan-June 19 Page 41 of WIND DIRECTION CALM 0 '-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 0.051 0.0 0.051 0.0 0.051 0.0 0.0 0.0 0.0 0.051 0.0 0.0 0.051 0.253 0.0 0.051 0.0 0.051 0.051 0.101 0.152 0.152 0.202 0.152 0.101 0.202 0.152 0.051 0.101 0.152 1.668 0.404 0.152 0.303 0.051 0.152 0.505 o.4o4 0.253 0.051 0.253 0.152 0.202 0.051 0.101 0.101 0.202 3.335 0.303 0.556 0.303 0.152 0.303 0.202 0.253 0.354 0.101 0.101 0.152 0.404 0.404 0.556 0.152 0.303 4.598 1.314

1. 971 0.758 0.404 0.303

l. 011 0.556 0.202 0.556 1.112 0.657 0.960 1.364 1.263 0.657 1.213 14.300 2.021 1.769 0.455 0.0 0.051 0.404 0.910 1.011 0.657 o.4ss 0.758 0.505 0.303 1.971 2.577 2.425 16.271 0.505 0.455 0.0 0.0 0.0 0.152 0.707 0.707 0.051 0.101 0.253 0.202 0.202 1.213 1.566 0.910 7.024 0.0 0.051 0.0 0.0 0.0 0.101 0.051 0.0 0.0 0.202 0.152 0.404 0.051 0.606 0.657 0.0 2.274 4.548 5.003 1.819 0.707 0.859 2.527 3.032 2.729

l. 617 2.375 2.223 2.880 2.577 5.760 5.811 5.255 49.722 TOTAL HOURS OF VALID STABILZTY OBSERVATIONS 1995 TOTAL HOURS OF STABILITY CLASS D

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

984 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 1979 TOTAL HOURS CALM 0

METEOROLOGICAL FACILITY: MET FACZLZTY 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- 04/30/92 MEAN WIND SPEED

~

13.1 MPH NOTE:

TOTALS AND SUBTOTALS ABOVE ARE OBTAINED FROM UNROUNDED NUMBERS

JOINT PERCENTAGE F

PEED BY WIND DIRECTION FOR STABZLITY CLASS E

(-0.5<

ELTA-T<~ 1.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT BFN Rad Imp Jan-June 1

Page 42 of JAN 1,

92 MAR 31, 92 WIND DIRECTION CALM 0.6-1.4 1.5-3.4 WIND SPEED(MPH) 3.5-5.4 5.5-7 '

7 '-12 '

12 '-18.4 18.5-24 '

)~24.5 TOTAL N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW SUBTOTAL 0.002 0.005 0.0 0.005 0.010 0.007 0.015 0.010 0.005 0.010 0.007 0.002 0.005 0.012 0.0 0.005 0.101 0.051 0.051, 0.0 0.051 0.051 0.101 0.051 0.0 0.0 0.0 0.051 0.0 0.0 0.051 0.0 0.051 0.505 0.0 0.051 0.0 0.051 0.152 0.051 0.253 0.202 0.101 0.202 0.101

0. 051 0.101 0.202 0.0 0.051 1.566 0.101 0.051 0.152 0.101 0.152 0.303 0.505 0.303 0.202 0.0 0.253 0.051 0.101 0.101 0.202 0.0 2.577 0.253 0.202 0.556 0.101 0.101 0.101 0.253 0.354 0.051 0.202 0.152 0.303 0.101 0.152 0.152 0.0 3.032 0.758 0.859 0.960 0.910 0.606 0.859 1.263 1.566 0.859 1.061 1.112 0.808 0.303 0.303 0.859 0.202 13.290 0.707 0.910 1.162 0.505 0.202 1.061

l. 769 1.870 1.162 0.556 0.505 0.404 0.960 0.556 0.707 1.263 14.300 0.101 0.101 0.202 0.101 0.0 0.253 0.202 0.606 0.253 0.152 0.051 0.303 0.152 0.101 0.303 0.051 2.931 0 '

0.0 0.0 0.0 0.0 0.0 0.152

0. 051 0.101 0.0 0.051 0.051 0.051 0.0 0.0 0.0 0.455 1.973 2.228 3.032 1.824 1.273 2.736 4.461 4.962 2.734 2.183 2.281 1.973 1.773 1.478 2.223 1.622 38.757 TOTAL HOURS OF VALID STABILZTY OBSERVATIONS 1995 TOTAL HOURS OF STABILITY CLASS E

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

767 TOTAL HOURS OF VALZD WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 1979 TOTAL HOURS CALM 2

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: 04/30/92 MEAN WIND SPEED

~

11.9 MPH NOTE:

TOTALS AND SUBTOTALS ABOVE ARE OBTAINED FROM UNROUNDED NUMBERS

JOI T PERCENTAGE F

UE ES STABILITY CLASS F

( 1.5 BROWNS FERRY NUCLEAR PLANT LTA-T<~ 4.0 C/100 M)

BFN Rad Em Jan-June 1

Page 43 of JAN 1,

92 - MAR 31, 92 WIND DIRECTION CAIM 0

~ 6-1.4 1.5-3.4 WZND SPEED(MPH) 3.5-5.4 5.5 7.-4 7.5-12.4 12.5-18.4 18.5-24.4

)5524,5 TOTAZ 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 0.101 0.101 0.0 0.101 0.0 0.0 0.051 0.051 0.0 0.0 0.0 0.0 0.0 0.051 0.0 0.455 0.0 0.0 0.0 0.051 0.051 0.0 0.0 0.0 0.051 0.051 0.0 0.0 0.0 0.0 0.0 0.0 0.202 0.101 0.051 0.0 0.0 0.051 0.0 0.101 0.253 0.101 0.101 0.101 0.0 0.0 0.0 0.0 0.0 0.859 0.101 0.051 0.101 0.202 0.101 0.354 0.505 0.253 0.303 0.051 0.051 0.303

0. 101 0.152 0.152 0.051 2.830 0.303 0.051 0.202 0.051 0.101 0.253 0.910 0.404 0.303 0.0 0.354 0.152 0.051 0.0 0.051 0.051 3.234 0.0 0.0 0.253 0.152 0.0 0.0 0.051 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.051 0 F 505 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0 '

0.0 0.0 0.0 0.505 0.253 0.657 0.455 0.404 0.606 1.566 0.960 0.808 0.202 0.505 0.4SS 0.152 0.152

0. 253 0.152 8.085 TOTAL HOURS OF VALID STABILITY OBSERVATIONS TOTAL HOURS OF STABZLZTY CLASS F

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

TOTAL HOURS OF VALID WIND DIRECTION-WZND SPEED-STABILITY OBSERVATIONS TOTAL HOURS CALM 1995 160 160 1979 0

METEOROLOGICAL FACILITY: MET FACILITY LOCATED 1 '

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: 04/30/92 MEAN WIND SPEED

=

11.7 MPH NOTE:

TOTALS AND SUBTOTALS ABOVE ARE OBTAINED FROM UNROUNDED NUMBERS

STABILITY CLASS G

( DELT

> 4. 0 C/100 M)

BROWNS PERRY NUCLEAR PLANT JAN 1,

92 - MAR 31, 92 BFN Rad Im Jan-June 1

Page 44 of 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 '-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 0.0 0.003 0.0 0.003 0.0 0.0 0.006 0.0 0.009

0. 018 0.006 0.003 0.0 0.0 0.0 0.051 0.051 0.0 0.051 0.0 0.0 0.0 0.0 0.051 0.0 0.101 0.051 0.0 0.0 0.0 0.0 0.0 0.303 0.0 0.0 0.0 0.0 0.051 0.0 0.0 0.051 0.0 0.051 0.253

0. 101 0.051 0.0 0.0 0.0 0.556 0.0 0.0 0.051 0.0 0.101 0.051 0.0 0.0 0.0 0.051 0.253 0.051 0.0 0.0 0.0 0.0 0.556 0.0 0.0 0.0 0.0 0.101 0.0 0.0 0.0 0.051 0.0 0.101 0.0 0.0 0.0 0.0 0.0 0.253 0.0 0.0 0.0 0.051 0.051 0.0 0.101 0.101 0.101 0.0 0.202 0.101 0.0 0.051 0.101 0.051 0.910 0.0 0.0 0.0 0.0 0.202 0.101 0.051 0.202 0.101 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.657 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

0. 054 0.0 0.104 0.051 0.508 0.152 0.152

0. 410 0.253 0.211 0.877 0.259 0.054 0.051 0.101 0.051 3.284 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 1995 TOTAL HOURS OF STABILITY CLASS G

65 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABZLITY CLASS G

65 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 1979 TOTAL HOURS CALM 1

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 HETERS WIND SPEED AND DIRECTION MEASURED AT THE 92.63 METER LEVEL DATE PRINTED: 04/30/92 MEAN WIND SPEED

~

7.5 MPH NOTE:

TOTALS AND SUBTOTALS ABOVE ARE OBTAINED FROM UNROUNDED NUMBERS

STABILITY CLASS A

tDEL BROWNS FERRY NUCLEAR PLANT

-1.9 C/100 M)

JOINT PERCENTAGE FREQUENCIES OF SPEED BY WIND DIRECTION FOR BFN Rad Impa Jan-June 19 Page 45 of APR 1,

92 - JUN 30, 92 WIND DIRECTION CALM 6. 6-1. 6 1.5-3.4 WIND SPEED t MPH) 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4

>=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 0.328 0.516 0.234 0.047 0.094 0.0 0

~ 0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0 '

0.328 0.563 0.656

-0. 703 0.094 0.141 0.047 0.0 0.0 0.0 0.0 0.047 0.0 0.0 0.0 0.0 0.188 0.0 0.047 0.094 0.047 0.0 0.094 0.0 0.0 0.047 0.0 0.703 0.563 0.188 0.0 0.0

0. 047 0.0 0.0 0.0 0.0 0.0 0.188 0.094 0.047 0.703 0.469 0.422 0.516 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.141 0.563 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.172 1.078 0.188 0.0 0.0 0.563 0.891 1

~ 219 1.031 0.188 0.234 0.328 0.094 0.188 1.313 0.469 SUBTOTAL 0.0 0.0 1.219 2.532 0.563 3.000 1.641 0.0 0.0 8.955 TOTAL HOURS OF VAIZD STABZLITY OBSERVATIONS TOTAI HOURS Of STABIIITY CLASS A

TOTAL HOURS OF VALZD WIND DIRECTION-WZND SPEED-STABILITY CLASS A

TOTAI HOURS OF VALID WIND DIRECTION-WIND SPEED-STABZI ZTY OBSERVATIONS TOTAL HOURS CALM 2182 194 191 2133 0

METEOROLOGZCAL 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 DATE PRZNTED: 07/23/92 MEAN WIND SPEED

=

8.1 MPH NOTE:

TOTALS AND SUBTOTALS ABOVE ARE OBTAINED FROM UNROUNDED NUMBERS

STABILITY CLASS B

(-1 ~

BROWNS FERRY NUCLEAR PZANT TA-T<a 1. 7 C/100 M)

APR 1 ~

92 JUN 30 i 92 JOINT PERCENTAGE FREQUENCIES OF SPEED BY WIND DIRECTION FOR BFN Rad Imp Jan-June 19 Page 46 of 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 '

>>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 0.422 0.375 0.047 0.094 0.094 0.047 0.0 0.0 0.0 0.0 1.078 0.047 0.094 0.0 0.0 0.0 0.188 0.141 0.188 0.141 0.141 0.141 0.469 0.047 0.047 0.0 0.0 1.641 0.0 0.094 0.0 0.047 0.047 0.094 0.047 0.0 0.047 0.0 0.0 0.141 0.047 0.047 0.094 0.094 0.797 0.234 0.047 0.094 0.0 0.047 0

~ 0 0.0 0.0 0.0 0.0 0.0 0.0 0.188 0.188 0.656 0.281 1.735

0. 047 0 '94 0 '94 0.0 0.0 0 '

0.0 0 '

0.0 0 '

0

~ 0 0.0 0.0 0.094 0.141 0.047 0.516 0.0 0 '

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 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0

~ 0 0.0 0.0 0

~ 0 0.328 0.328 0.188 0.047 0.094 0.281 0.609 0.563 0.234 0.234 0.234 0.656 0.281 0.375 0.938 0.422 5.813 TOTAL HOURS OF VALZD STABILITY OBSERVATIONS 2182 TOTAL HOURS OF STABILITY CLASS B

TOTAL HOURS OF VAZID WIND DIRECTION-WIND SPEED-STABILITY CLASS B

124 TOTAL HOURS OF VALID WIND DIRECTION-MIND SPEED-STABILITY OBSERVATIONS 2133 TOTAL HOURS CALM METEOROLOGICAL FACILITY: MET FACILITY LOCATED 1.3 KM ESE OF BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON LAPSE RATE MEASURED BETWEEN 10.03 AND'5.30 METERS WIND SPEED AND DIRECTION MEASURED AT THE

10. 42 METER LEVEL DATE PRINTED: 07/23/92 MEAN WIND SPEED

~

6.8 MPH NOTE:

TOTALS AND SUBTOTALS ABOVE ARE OBTAINED FROM UNROUNDED NUMBERS

JOINT PERCENTAGE FREQUENCIES OF SPEED BY WIND DIRECTION FOR TA-T<m-I 5 C/100 M)

STABILITY CLASS C

(-1.

BROWNS FERRY NUCLEAR PLANT BFN Rad imp Jan-June 19 Page 47 of APR 1,

92 JUN 30, 92 WIND DIRECTION CALM 0.6-1.4 1.5>>3.4 WZND SPEED(MPH) 3.5-5.4 5.5-7.4 7.5-12 '

12 '-18 '

18 '-24 '

>~24.5 TOTAL N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW SVBTOTAI 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0

~ 0 0.0 0

~ 0 0.0 0 '

0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.047 0.938 0.469 0.328 0.141 0.188 0.0 0.0 0.0 0.0 0.0 2.110 0.0 0.0 0.047 0.0 0.0 0.094 0.094 0.047 0.234 0.188 0.188 0.234 0.234 0.047 0.094 0.047 1.547 0.0 0.188 0.094 0.0 0.0 0.047 0.0 0.0 0.0 0.0 0 ~ 0 0.047 0.234 0.328 0.563 0.047 1.547 0.188 0.047 0.141 0.094 0.0 0.0 0 '

0.0 0 '

0 '

0 '

0 '94 0.094 0.094 0.422 0.422 1.594 0.047 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 0.188 0.0 0.281 0.0 0.0 0.0 0.0 0 '

0.0 0.0 0.0 0.0 0 '

0.0 0.0 0.0 0.0 0.0 0 '

0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.234 0.234 0.328 0.094 0 '

0.188 1.031 0.516 0.563 0.328

0. 375 0.375 0.563 0.469 1.266

0. 516 7.079 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2182 TOTAL HOURS OF STABILITY CLASS C

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

151 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2133 TOTAL HOURS CAIM 0

METEOROLOGICAL FACILITY: MET FACIIITY 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: 07/23/92 MEAN WIND SPEED

~

5.8 MPH NOTE:

TOTALS AND SVBTOTALS ABOVE ARE OBTAINED FROM UNROUNDED NUMBERS

0

JOINT PERCENTAGE FREQUENCIES OF STABILITY CLASS D

(-1.

BROWNS FERRY NUCLEAR PLANT SPEED BY WIND DIRECTION FOR TA-T<=-0. 5 C/100 M)

BFN Rad Im Jan-June 1

Page 48 of 7

APR 1,

92 - JUN 30, 92 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 0.002 0.001 0.001 0.002 0.004 0.003 0.007 0.007 0.005 0.003 0.003 0.004

0. 001 0.001 0.001 0.001 0.047 0.094 0.047 0.0 0.047 0.094 0.047 0.047 0.094 0.188 0.047 0.047 0.0 0.0 0.0 0.0 0.0 0.750 0.281 0.281 0.328 0.422 0.797 0.703 1.594 1.594 0.985 0.563 0.609 0.938 0.234 0.141 0.141 0.328 9.939 0.469 0.141 0.328 0.234 1.313 1.078 0.844 0.891 0.797 0.188 0.234 0.891 0.985 0.844 0.328 0.563 10.127 0.985 0.422 0.422 0.328 0.563 0.609 0.375 0.094 0.0 0.047 0.047 0.234 0.844 0.375 0.656 0.469 6.470 1.031 0.656 0.422 0.141 0.047 0.234 0.047 0.094 0.0 0.0 0.0

0. 141 0.188 0.328 0 '50 1.125 5.204 0.094 0.234 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.094 0.234 0.656 0.047 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 0.094 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 3.002 1.830 1.502 1.174 2.817 2.676 2.914 2.773 1.974 0.847 0.941 2.208 2.251 1.688 1.970 2 '21 33.286 TOTAL HOURS OF VAIZD STABILITY OBSERVATZONS 2182 TOTAL HOURS OF STABILITY CLASS D

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

710 TOTAI HOURS OF VALID WZND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2133 TOTAI HOURS CALM 1

METEOROLOGZCAL FACILITY: MET FACILITY LOCATED 1.3 KM ESE OF BROWNS FERRY NUCLEAR PIANT STABILITY BASED ON IAPSE RATE MEASURED BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT THE 10.42 METER LEVEL MEAN WIND SPEED

=

5.1 MPH DATE PRINTED 07/23/92 NOTE:

TOTALS AND SUBTOTALS ABOVE ARE OBTAINED FROM UNROUNDED NUMBERS

JOINT PERCENTAGE FREQUENCIES OF W

SPEED BY WIND DIRECTION POR STABILITY CLASS E

(-0

~

BROWNS PERRY NUCLEAR PLANT TA-T<55 1.S C/100 M)

BFN Rad Im Jan-June 19 Page 49 of 72 APR 1 3 92 JVN 305 92 WIND DIRECTION CAIM 0.6-1.4 1.5-3.4 WIND SPEED(MPH) 3.5-5.4 5'-7 '

7.5-12.4 12.5-18.4 18.5-24.4

>~24.5 TOTAL N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW SUBTOTAL 0.010 0.008 0.008 0.009

0. 018-0.024 0.022 0.019 0.015 0.007 0.010 0.015 0.006 0.001 0.004 0.010 0.188 0.141 0.047 0.094 0.047 0.141 0.516 0.422 0.563 0.469 0.0 0.188 0.141 0.047 0.047 0.094

0. 141 3.094 0.563 0.516 0.516 0.609 1.172 1.266

1. 219 0.844 0.656 0.516 0.563 0.985 0.422 0.047 0.234 0.563 10.689 0.703 0.375 0.469 0.281 1.360 1.453 1.172 0.563 0.609 0.094 0.0 0.328 0.141 0.188 0.188 0.516 8.439 0.656

0. 656 0.047 0.0 0.094 0.141 0.094 O.O94 0.0 0.0 0.0 0.094 0.0 0.094 0.094 0.469

2. 532 0.234 0.422 0.141 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.047 0.0 0.047 0.094 0.281 1.266 0.047 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 0.094 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0 ~ 0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 2.354 2.070 1 ~ 274 0.947 2.784 3.400 2.929 2.082 1.750 0.616 0.760 1

~ 609 0.616 0.423 0.708 1.979 26.301 TOTAL HOURS OF VALID STABZLITY OBSERVATIONS TOTAL HOURS OF STABZLZTY CLASS E

TOTAL HOURS OF VALID WIND DIRECTZON-WIND SPEED-STABII ITY CLASS E

TOTAI HOURS OF VALID WIND DIRECTION-WIND SPEED-STABZIZTY OBSERVATIONS TOTAL HOURS CALM 2182 581 561 2133 4

METEOROLOGZCAL FACILITY: MET FACILITY LOCATED 1 ~ 3 KM ESE OF 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 DATE PRINTED: 07/23/92 MEAN WIND SPEED

=

3.6 MPH NOTE: TOTAIS AND SVBTOTALS ABOVE ARE OBTAINED FROM UNROVNDED NVMBERS

~

J

JOINT PERCENTAGE FREQUENCIES OF

'PEED BY WIND DIRECTION FOR STABILITY CLASS F

(

1 LTAT<m 4.0 C/100 M)

BROWNS FERRY NUCLEAR PLANT APR 1

~

92 JUN 30'2 BFN Rad Im Jan-June 1992 Page 50 of 72 WIND DIRECTION CALM 0.6-1.4 1.5-3.4 WIND SPEED(MPH) 5.5-5.4 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 0.024 0.007 0.022 0.020 0.044 0.035 0.035 0.029 0.027 0.005 0.002 0.0 0.0 0.002 0.0 0.029 0.281 0.047 0.047 0.094 0.094 0.234 0.375 0.375 0.328 0.234 0.0 0.0 0.0 0.0 0.0 0.0 0.094 1.922 0.563 0.141 0.469 0.422 0.891 0.516 0.516 0.422 0.469 0.141 0.047 0.0 0.0 0.047 0.0 0.656 5.298 0.703 0.516 0.141 0.188 0.375 0.0 0.047 0.094 0.328 0.0 0.047 0.0 0.0 0.047 0.0 0.094 2.579 0.047 0.141 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 0.047 0.328 0.0 0.094 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 0.141 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0

~ 0 1.383 0.945 0.819 0.723 1.544 0.925 0.972 0.873 1.059 0.146 0.096 0.0 0.047 0.096 0.0 0.920 10.549 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2182 TOTAL HOURS OF STABILITY CZASS F

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

225 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABZLITY OBSERVATIONS 2133 TOTAL HOURS CALM 6

METEOROLOGZCAZ FACILITY: MET FACILITY LOCATED 1-3 KM ESE OF BROWNS FERRY NUCLEAR PZANT STABZZ ZTY BASED ON LAPSE RATE MEASURED BETWEEN 10.03 AND 45 '0 METERS WIND SPEED AND DIRECTION MEASURED AT THE 10.42 METER LEVEL DATE PRINTED: 07/23/92 MEAN WIND SPEED

~

2 '

MPH NOTE:

TOTALS AND SUBTOTALS ABOVE ARE OBTAINED FROM UNROUNDED NUMBERS 4

'f

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

(DE BROWNS FERRY NUCLEAR PLANT 4

0 C/100 M)

BFN Rad 1'an-Junel Page Sl of 72 APR 1,

92 - JUN 30, 92 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 0.178 0.058 0.029 0.054 0.029 0.025 0.021 0.058 0.012 0.008 0.004 0.008 0.0 0.004 0.017 0.058 0.563 0.750 0.188 0.188 0.234 0.094 0.141 0.094 0.469 0.0 0.047 0.0 0.047 0.0 0.047 0.188 0.328 2.813 1.266 0.469 0.141 0.375 0.234 0.141 0.141 0.188 0.141 0.047 0.047 0.047 0.0 0.0 0.0 0.328 3.563 0.422 0.328 0.0 0.141 0.0 0

~ 0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0

0 0.0

0. 141 1.031 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.047 0.047 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 '

0.0 0.0 0 '

0.0 0.0 0.0 0,0 0

~ 0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 2.616 1.042 0.357 0.804 0.357 0.306 0.255 0.714 0.153 0.102 0.051 0.102 0.0

0. 051 0.204 0.902 8.017 TOTAL HOURS OF VALID STABILITY OBSERVATIONS TOTAL HOURS OF STABILITY CLASS G

TOTAL HOURS OF VAIZD WIND DIRECTION-WIND SPEED-STABILITY CI ASS G

TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS TOTAL HOURS CALM 2182 175 171 2133 12 METEOROLOGICAL FACILITY: MET FACILITY LOCATED 1.3 KM ESE OF BROWNS FERRY NUCIEAR PIANT 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: 07/23/'92 MEAN WIND SPEED

~

2.0 MPH NOTE:

TOTALS AND SUBTOTALS ABOVE ARE OBTAINED FROM UNROUNDED NUMBERS

~

e

STABILITY CLASS A

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

BROWNS FERRY NUCLEAR PLANT PART 1

OF 2

GROUND LEVEL RELEASE MODE IRE TZ N FOR BFN Rad Imp Jan-June 1

Page 52 of APR 1,

92 JUN 30, 92 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

>424.5 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 0.013 0.022 0.009 0.001 0.0 0.0 0.0 0.0 0.0 0.0 0.045 0.0 0.0 0.0 0.0 0.0 0.019 0.035 0.058 0.044 0.007 0.014 0.007 0.0 0 '

0.0 0.0 0.185 0.002 0.0 0.0 0.0 0.0 0.028 0.0 0.020 0.037 0.009 0.0 0.011 0.0 0.0 0.004 0.0 0.112 0.113 0.097 0.029 0.0 0.0 0.007 0.0 0.0 0.0 0 ~ 0 0.0 0.034 0.016 0.006 0.110 0.081 0.493 0.114 0.226 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.033 0.156 0.0 0.529 0.0 0.0 0.0 0 ~ 0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.229 0.323 0.029 0.0 0.0 0.055 0.047 0.101 0.091 0.018

0. 014 0.052 0.016 0.039 0.271 0.081 1.365 TOTAL HOURS OF VALID OBSERVATIONS 2138. 000 TOTAL HOURS OF GROUND LEVEL RELEASE 182.490 TOTAL HOURS OF STABILITY CLASS A 29.190 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS A 29.190 METEOROLOGICAL FACILITY:

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 WZND SPEED MEASURED AT 10.42 METER LEVEL EFFLUENT VELOCITY ~ 12.60 M/S DATE PRINTED: 07/23/92 NOTE:

TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS

0

L J

ZNT E

EN G

R EN IES N

STABILITY CLASS B

(-1'<

DELTA T<=-1.7 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 1

OF 2

GROUND LEVEL RELEASE MODE APR 1,

92 JVN 30, 92 BFN Rad Imp Jan-June 19 Page 53 of 7

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.S 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 O.D 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.010 0.019 0.002 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.031 0.0 0.000 0.0 0.0 0.0 0.024 0.008 0.007 0.001 0.004 0.006 0.008 0.002 0.000 0.0 0 '

0.061 0.0 0.009 0.0 0.004 0.003 0.018 0.007 0.0 0.009 0.0 0.0 0.014 o.oo4 0.003 0.007 0.007 O.DSS 0.036 0.009 0.017 0.0 0.006 0.0 0.0 0.0 0.0 0.0 0.0 0.0

0. 030 0.024 0.089 0.042 0.254 0.009 0.026 0.018 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.024 0.045 0.009 0.131 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 0.0 0.030 0.0 0.030 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.045 0.044 0.035 0.004 0.009 0.042 0.025 0.027 0.012 0.004 0.006 0.022 0.036 0.052 0.172 0.057 0.591 TOTAL HOURS OF VALID OBSERVATIONS 2138.000 TOTAL HOURS OF GROUND LEVEL RELEASE 182.490 TOTAL HOURS OF STABILITY CLASS B

12.640 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS B

12.640'ETEOROLOGICAL FACILITY:

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 DZRECTZON MEASURED AT 10 '2 METER LEVEL WIND SPEED MEASURED AT 10.42 METER LEVEL EFFLUENT VELOCITY 12.60 M/S DATE PRINTED: 07/23/92 NOTE:

TOTALS AND SUBTOTALS ARE OBTAINED FROM VNROVNDED NUMBERS

STABZLITY CLASS C

(-1.

DELTA T< -1.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 1

OF 2

GROUND LEVEL RELEASE MODE APR 1,

92 - JUN 30, 92 BFN Rad Imp Jan-June 19 Page 54 of 72 WIND DIRECTION CALM 0.6-1.4 3. 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 0.009 0.001 0.0 0.0 0.002 0 '

0.0 0.0 0.0 0.0 0.012 0.0 0.0 0.0 0.0 0.0 0.003 0.007 0.008 0.022 0.007 0.006 0.005 0.000 0.0 0.000 0.0 0.060 0.0 0.013 0.006 0.0 0.0 0.007 0.0 0.0 0.0 0.0 0.0 0.005 0.020 0.021 0.035 0.002 0.109 0.029 0.007 0.020 0.012 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.016 0.016 0.013 0.062 0.068 0.242 0.022 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 0.041 0.0 0.072 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0 F 051 0.019 0.034 0.012 0.0 0.010 0.016 0.009 0.022 0.007 0.008 0.027 0.037 0.034 0.138 0.070 0.495 TOTAL HOURS OF VALID OBSERVATIONS 2138.000 TOTAL HOURS OF GROUND LEVEL RELEASE 182.490 TOTAL HOURS OF STABILITY CLASS C

13.250 TOTAL HOURS OF GROUND LEVEL STABZLITY CLASS C

10.590 METEOROLOGICAL FACILITY:

MET FACILZTY LOCATED 1

~ 3 KM ESE OF BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DEZTA-T BETWEEN 10.03 AND 45.30 METERS WIND DIRECTION MEASURED AT 10.42 METER LEVEL WIND SPEED MEASURED AT 10.42 METER LEVEL EFFLUENT VELOCITY ~ 12.60 M/S DATE PRINTED: 07/23/92 NOTE:

TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS

e

SPLIT JOINT PERCENTAGE FREQUENCIES ND SPEED BY WIND DIRECTION FOR BROWNS FERRY NUCLEAR PLANT PART 1

OF 2

GROUND LEVEL RELEASE MODE STABILITY CLASS D

t-DELTA T<~-0.5 C/100 M)

BFN Rad Imp Jan-June 1

Page 55 of APR 1

~

92 JUN 30 i 92 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 '-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 0.001 0 '

0.000 0.007 0.005 0.036 0.062 0.029 0.020 0.006 0.013 0.0 0.0 0 '

0.0 0 ~ 180 0.007 0.006 0.007 0.006 0.090 0.105 0.097 0.146

0. 119 0.014 0.014 0.038 0.029 0.008 0.001 0.017 0.708 0.104 0.046 0.042 0.035 0.067 0.099 0.094 0.046 0.0 0.009 0.008 0.036 0.087 0.029 0.044 0.050 0.797 0.174 0.112 0.064 0.021 0.008 0.043 0.009 0.078 0.0 0.0 0.0 0.024 0.029 0.044 0.115 0.186 0.906 0.019 0.063 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

0. 019 0.050 0.151 0.035 0.043 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.078 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.340 0.270 0.113 0.062 0.173 0.253 0.237 0.333 0.148 0.044 0.029 0.111 0.145 0.081 0.179 0.302 2.819 TOTAL HOURS OF VALID OBSERVATIONS 2138.000 TOTAL HOURS OF GROUND LEVEL RELEASE 182.490 TOTAL HOURS OF STABZLZTY CLASS D

1178.160 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS D

60.260 METEOROLOGICAL FACILITY:

MET FACILITY LOCATED 1.3 KM ESE OF BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WZND DZRECTION MEASURED AT 10.42 METER LEVEL WZND SPEED MEASURED AT 10.42 METER LEVEL EFFLUENT VELOCITY ~ 12.60 M/S DATE PRINTED: 07/23/92 NOTE:

TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS

STABILITY CLASS E

(-0.

DELTA T<m 1.5 C/100 M)

BROW)IS FERRY NUCLEAR PLANT PART 1

OF 2

GROUND LEVEL RELEASE MODE APR 1,

92 - JUN 30, 92 BFN Rad Em Jan-June 1

Page 56 of WIND DIRECTZON CALM 0.6-1.4 1.5-3.4 WIHD SPEED(MPH) 3.5-5.4 5.5 'l.-4 7.5-12.4 12.5-18.4 18.5-24.4

>~24.5 TOTAL N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW 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 0.003 0.0 0.0 0.0 0.003 0.004 0.0 0.007 0.019 0.0 0.000 0.0 0.002 0.0 0.0 0.0 0.038 0.007 0.001

0. 012 0.023 0.029 0.056 0.099 0.065 0.046 0.040 0.012 0.032 0.009 0.0 0.003 0.008 0.442 0.077 0.035 0.044 0.029 0.139 0.156 0.203 0.129 0.105 0.015 0.0

0. 041 0.010 0.013 0.006

0. 051 1.053 0.097 0.094 0.007 0.0 0.014 0.020 0.012 0.059 0.0 0.0 0.0 0.015 0.0 0.012 0.013 0.069 0.413 0.041 0.075 0.023 0.0 0.0 0.0 0.0 0 '

0.0 0.0 0

~ 0 0.008 0.0 0.008 0 '14 0

F 050 0.220 0.014 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 0.023 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.239 0.215 0.087 0.052 0.184 0.236 0.314 0.260 0.169 0.055 0.013 0.096 0.021 0.033 0.036 0.178 2.189 TOTAL HOURS OF VALID OBSERVATZONS 2138.000 TOTAL HOURS OF GROUND LEVEL RELEASE 182.490 TOTAL HOURS OF STABILITY CLASS E

647.730 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS E

46.800 METEOROLOGICAL FACILITY:

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 LEVEL EFFLUENT VELOCITY 55 12.60 M/S DATE PRINTED: 07/23/92 NOTE:

TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS

SPLIT JOZNT PERCENTAGE FREQUENCIES ND SPEED BY WIND DIRECTION FOR BFN Rad Zm Jan-June 19 STABILITY CLASS F

t 1. 5<

DELTA T<~

4 ~ 0 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 1

OF 2

GROUND LEVEL RELEASE MODE APR 1,

92 JUN 30, 92 Page 57 of 72 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 0.012 0.010 0.019 0.005 0.017 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.063 0.036 0.0 0.022 0.021 0.021 0.014 0.023 0.035 0.038 0.004 0.0 0.0 0.0 0.0 0.0 0.041 0.255 0.086 0.055

0. 017 0.017 0.033 0.0 0.009 0.018 0.059 0.0 0.005 0.0 0.0 0 F 005 0.0 0.012 0.316 0.008 0.022 0.007 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.006 0.0 0.0 0.007 0.051 0.0 0.017 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 0.026 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.130 0.095 0.055 0.038 0.065 0.024 0.051 0.058 0.115 0.004 0.005 0.0 0.006 0.005 0.0 0.061

0. 711 TOTAL HOURS OF VALID OBSERVATIONS 2138.000 TOTAL HOURS OF GROUND LEVEL RELEASE 182.490 TOTAL HOURS OF STABILITY CLASS F

196.400 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS F

15.210 METEOROLOGICAL FACILITY:

MET FACIIITY LOCATED 1

~ 3 KM ESE OF BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10 '3 AND 45 '0 METERS WIND DIRECTION MEASURED AT 10.42 METER LEVEL WIND SPEED MEASURED AT 10.42 METER LEVEL EFFLUENT VELOCZTY = 12.60 M/S DATE PRINTED: 07/23/92 NOTE:

TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS

QUE E

N PEE B

IND DI T

N FOR STABILITY CLASS G

{DEL T

> 4.0 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 1

OF 2

GROUND LEVEL RELEASE MODE APR 1,

92 JUN 30, 92 BFN Rad Imp Jan-June 19 Page 58 of 72 WIND DIRECTION CALM 0 '-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 0.002 0.000 0.001 0.000 0.001 0.001 0.005 0.001

0. 001 0.0 0.000 0.0 0.0 0.0 0.000 0.016 0.0 0.0 0.0 0.0 0.0 0.008 0.011 0.034 0.0 0.005 0.0 0.0 0.0 0.0 0.0 0.0 0.058 0.039 0.021 0.002 0.007 0.004 0.005 0.006 0 '30 0.015 0.004 0.0 0.005 0.0 0.0 0.0 0.002 0.139 0.056 0.049 0.0

0. 017 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0 '

0.022 0.144 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.008 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 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.098 0.071 0.003 0.024 0.005 0.014 0.018 0.069 0.016 0.009 0.0 0.005 0.0 0.0 0.0 0.032 0.365 TOTAL HOURS OF VALID OBSERVATIONS 2138. 000 TOTAL HOURS OF GROUND LEVEL RELEASE 182.490 TOTAL HOURS OF STABILITY CLASS G

60.630 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS G

7.800 METEOROLOGICAL FACILITY:

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 WZND SPEED MEASURED AT 10.42 METER LEVEL EFFLUENT VELOCITY 12.60 M/S DATE PRINTED: 07/23/92 NOTE:

TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS

SPLIT JOINT PERCENTAGE FREQUENCIES STABILITY CLASS A

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

BROWHS FERRY NUCLEAR PLANT PART 2

OF 2

ELEVATED RELEASE MODE APR 1,

92 JUN 30, 92 D DIRECTION FOR BFN Rad Im Jan-June 1

Page 59 of 72 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 VALID OBSERVATIONS TOTAL HOURS OF ELEVATED RELEASES TOTAL HOURS OF STABILITY CLASS A TOTAL HOURS OF ELEVATED STABZl ITY CLASS A 2138.000 1955.510 29.190 0.0 METEOROLOGICAL FACZLITY:

MET FACILITY LOCATED 1.3 KM ESE OF BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 45430 AND 89.59 METERS WIND DIRECTION MEASURED AT 45.67 METER LEVEL WIND SPEED MEASURED AT 45.67 METER LEVEL EFFLUENT VELOCITY = 12460 M/S DATE PRINTED: 07/23/92 NOTE:

TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS

SPLIT JOINT PERCENTAGE PREQUENCZE IND SPEED BY WIND DIRECTION FOR STABILITY CLASS B

(-

DELTA T<~-1.7 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 2

OF 2

ELEVATED RELEASE MODE APR 1,

92 - JUN 30, 92 BFN Rad Im Jan-June 1

Page 60 of WIND DZRECTZON N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW CALM 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0 '-1.4 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.5-3.4 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0-0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 WIND SPEED(MPH) 3.5-5.4 5.5-7.4 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0.

0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 7.5-12.4 12.5-18.4 18.5-24.4

>>24.5 0.0 0.0 0.0 0.0 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 0.0 0.0 0.0 0.0 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 VALZD OBSERVATIONS TOTAL HOURS OF ELEVATED RELEASES TOTAL HOURS OF STABILITY CLASS B

TOTAL HOURS OF ELEVATED STABILITY CLASS B

2138.000 1955. 510 12.640 0.0 METEOROLOGICAL FACILITY:

MET FACZLZTY LOCATED 1.3 KM ESE OF BROWNS PERRY NUCZ EAR PLANT STABILITY BASED ON DELTA-T BETWEEN 45.30 AND 89.59 METERS WIND DIRECTION MEASURED AT 45.67 METER LEVEL WIND SPEED MEASURED AT 45.67 METER LEVEL EPFLVENT VELOCITY ~ 12.60 M/S DATE PRZNTED'7/23/92 NOTE:

TOTALS AND SUBTOTAZS ARE OBTAINED PROM UNROUNDED NUMBERS

SPLIT JOINT PERCENTAGE FREQUENCIES ND SPEED BY WIND DIRECTION FOR BFN Rad Im Jan-June 1

STABILITY CLASS C

( <

DELTA T<~-1.5 C/100 M)

BPOWNS FERRY NUCLEAR PLANT PART 2

OF 2

ELEVATED RELEASE MODE APR 1,

92 - JUN 30, 92 Page 61 of 72 WIND DIRECTION CALM 0.6-1.4 X.i-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 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 0.047 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 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.039 0.0 0.0 0.0 0.0 0.039 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.038 0.0 0.0 0.0 0.0 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 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.047 0.078 0.0 0.0 0.0 0.0 0.124 TOTAL HOURS OF VALID OBSERVATIONS TOTAL HOURS OF ELEVATED RELEASES TOTAL HOURS OF STABILITY CLASS C

TOTAL HOURS OF ELEVATED STABILZTY CLASS C

2138.000 1955.510 13.250 2.660 METEOROLOGICAL FACILITY:

MET FACZLITY LOCATED 1 '

KM ESE OF BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 45.30 AND 89.59 METERS WIND DZRECTION MEASURED AT 45.67 METER LEVEL WIND SPEED MEASURED AT 45.67 METER LEVEL EFFLUENT VELOCITY ~ 12.60 M/S DATE PRZNTED: 07/23/92 NOTE:

TOTALS AND SUBTOTALS ARE OBTAZNED FROM UNROUNDED NUMBERS

SPLIT JOINT PERCENTAGE FREQUENCIES ND SPEED BY WZND ZRECTZON F

R BFN Rad Im Jan-June 1

STABILZTY CLASS D

(-1.5(

DELTA T( -0.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 2

OF 2

ELEVATED RELEASE MODE APR 1,

92 JUN 30, 92 Page 62 of 72 WIND DIRECTION CALM 0.6-1.4 1.6-3.'4 WIND SPEED(MPH) 3.5-5.4 5.5-7.4 7.5 12.4 12.5-18-4 18-5-24 '

>~24.5 TOTAL N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW SUBTOTAL 0.004 0.004 0.003 0.003 0.004 0.006 0.022

0. 011

0. 010 0.007 0.005 0.006 0.001 0.002 0.002 0.004 0.094 0.094 0.0 0.0 0.047 0.0 0.047 0.094 0.094 0.0 0.047 0.094 0.047 0.0 0.0 0 '47 0.047 0.655 0.187 0.281 0.234

0. 187 0.327 0.421 1.590 0.795 0.748 0.514 0.327 0.421 0.094 0.140 0.094 0.234 6.595 0.421 0.374 0.281 0.140 0

F 234 0.795 1.029 0.795 0.187 0 ~ 421 0.608 0.982 0 '95 0.655 0.374 0.187 8.279 0.493 0.401 0.271 0.046 0.493 1.080 0.539 0.453 0.546 0.229 0.585 0.812 0.677 0.719

l. 079 0.359 8.782 1.702 1.222 0.697 0.455 0.543 1.856 1.625 0.928 0.485 0.657 0.495 0.577 1.288 0.997 1.919 1.215

16. 660 1.143 1.184 0.422 0.0 0.0 0.0 1.253 1.216 0.954 0.191

0. 114 0.425 0.228 0.076 1.412 1.302 9.920 0.151 0.414 0.0 0.0 0.0 0.0 0.187 0.200

0. 019 0.0 0.0 0.0 0.033 0.032

0. 212 0.036 1.283 0.0 0.004 0.0 0.0 0.0 0.0 0.0 0.015 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.020 4.193 3.885 1.908 0.879 1.601 4.205 6.339 4.507 2.949 2.066 2.229 3.270 3.116 2.621 5.138 3.382 52.286 TOTAL HOURS OF VALID OBSERVATIONS TOTAL HOURS OF ELEVATED RELEASES TOTAL HOURS OF STABILITY CLASS D

TOTAL HOURS OF ELEVATED STABILITY CLASS D

2138.000 1955.510 1178.160 1117.900 METEOROLOGICAL FACILITY:

MET FACZLZTY ZOCATED 1.3 KM ESE OF BROWNS FERRY NUCIEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 45.30 AND 89.59 METERS WIND DIRECTION MEASURED AT 45.67 METER LEVEL WIND SPEED MEASURED AT 45.67 METER ZEVEL EFFLUENT VELOCITY ~ 12.60 M/S DATE PRINTED 07/23/92 NOTE:

TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS

I P

E Y

ZND DIRECTION FOR STABILITY CLASS E

t-0 ~

DELTA T<= 1.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 2

OF 2 ELEVATED RELEASE MODE APR 1,

92 - JUN 30, 92 BFN Rad imp Jan-June 1

Page 63 of 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 0.002 0.002 0.001 0.001 0.002 0.003 0.009 0.004 0.006 0.004 0.002 0.002 0.003 0.002 0.002 0.002 0.047 0.0 0.0 0.0 0.0 0.0 0.0 0.047 0.0 0.047 0.047 0.0 0.0 0.047 0.0 0.047 0.0 0.234 0.187 0.140 0.094 0.047 0.187 0.234 0.702 0.281 0.468 0.234 0.187 0.140 0.187 0.140 0.140 0.140 3.508 0.374 0.281 0.094 0.234 0.608 0.374 0.889 0.748

0. 561 0.281 0.655 0.374 0.327 0.140 0.140 0.234 6.314 0.637 0.410 0.226 0.501 0.635 0.890 0.904 0.412

0. 310 0.224 0.179 0.227 0.180 0.044 0.0

0. '227 6.005 1.442

1. 159 0.576 0.417 0.666 1.333 0.750 0.664 0.333 0.696 0.585 0.290 0.084 0.124 0.164 0.822 10.105 0.232

0. 153 0.155 0.0 0.039 0.0 0.190 0.528 0.192 0.076 0.077 0.0 0.0 0.0 0.039 0.154 1.836 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.058 0.0 0.0 0.0 0.0 0.0 0.0 0.0 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 2.875 2.146 1.145 1.199 2.137 2.834 3.490 2.695 1.917 1.561 1.685 1.034 0.828 0.450 0.533 1.578 28.107 TOTAL HOURS OF VALZD OBSERVATIONS TOTAL HOURS OF ELEVATED RELEASES TOTAL HOURS OF STABILITY CLASS E

TOTAL HOURS OF ELEVATED STABILITY CLASS E

2138.000 1955.510 647.730 600.930 METEOROLOGICAL FACILITY:

MET FACILITY LOCATED 1.3 KM ESE OF BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 45.30 AND 89.59 METERS WIND DIRECTION MEASURED AT 45.67 METER LEVEL WZND SPEED MEASURED AT 45.67 METER LEVEL EFFLUENT VELOCITY & 12 '0 M/S DATE PRINTED: 07/23/92 NOTE:

TOTALS AND SUBTOTALS ARE OBTAZNED FROM UNROUNDED NUMBERS

STABILITY CLASS F

( 1.

DELTA T<55 4. 0 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 2

OF 2

ELEVATED RELEASE MODE APR 1,

92 JUN 30, 92 BFN Rad Im Jan-June 1

Page 64 of WIND DIRECTION CALM

6. 6-1. 4 1. 5-3. 4 WIND SPEED(MPH) 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4

>3524. 5 TOTAL N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW SUBTOTAL 0.002 0.002 0.002 0.004 0.002 0.021 0.010 0.013 0.006 0.004 0.004 0.008 0.004 0.0 0.006 0.008 0.094 0.047 0.047 0.0 0.0 0.0 0.047 0.0 0.0 0.0 0.0 0.0 0.094 0.047 0.0 0.0 0.0 0.281 0.0 0.0 0.047 0.094 0.047 0.468 0.234 0.327 0.140 0.094 0.094 0.094 0.047 0 '

0.140 0.187 2.011 0.140 0.094 0.094 0.094 0.0 0.140 0.281 0.094 0.327 0.140 0.187 0.140 0.0 0.047 0.0 0.094

1. 871 0.0 0.0 0.046 0.0 0.134 0.045 0.224 0.362 0.087 0.135 0.317 0.0 0.0 0.0 0.0 0.179 1.529 0.246 0.400 0.205 0.123 0.326 0.126 0.084 0.210 0.085 0.243 0.128 0.043 0.042 0.0 0.0 0.082 2.345 0.0 0.039 0.038 0.0 0.0 0.0 0.0 0.0 0.077 0.077 0.0 0.0 0.0 0.0 0.0 0.078 0.308 0.0 0.037 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.037 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.435 0.618 0.432 0.314 0.508 0.847 0.832 1.007 0 F 723 0.692 0.729 0.379 0.139 0.047 0.146 0.627 8.475 TOTAL HOURS OF VALID OBSERVATIONS TOTAL HOURS OF ELEVATED RELEASES TOTAL HOURS OF STABILITY CLASS F

TOTAL HOURS OF ELEVATED STABZLITY CLASS F

2138. 000 1955.510 196.400 181.190 METEOROLOGICAL FACILITY:

MET FACILITY LOCATED 1. 3 KM ESE OF BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 45.30 AND 89.59 METERS WIND DIRECTION MEASURED AT 45.67 METER LEVEL WIND SPEED MEASURED AT 45.67 METER LEVEL EFFLUENT VELOCITY ~ 12.60 M/S DATE PRINTED: 07/23/92 NOTE:

TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS

STABILITY CLASS G

(DEL T

> 4.0 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 2

OF 2

ELEVATED RELEASE MODE APR 1,

92 - JUN 30, 92 BFN Rad Im Jan-June 1

Page 65 of WIND DIRECTION CALM 6.6-1.4 1.5-3.4 WIND SPEED(MPH) 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4

)~24.5 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 0.047 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.047 0.094 0.0 0.0 0.0 0.0 0.0 0.140 0.047 0.0 0.047 0.0 0.0 0.0 0.0 0.094 0.0 0.0 0.327 0.0 0.047 0.047 0.0 0.0 0.047 0.561 0.0 0.094 0.0 0.0 0.0 0.094 0.047 0.0 0.047 0.982 0.044 0.045 0.0 0.0 0.0 0.045 0.225 0.0 0.0 0.093 0.043 0.0 0.0 0.0 0.0 0.044 0.540 0.161 0.164 0.0 0.0 0.0 0.0 0.043 0.0 0.0 0.0 0.043 0.0 0.0 0.0 0.0 0.0

0. 411 0.0 0.116 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0 '

0.116 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.205 0.372 0.047 0.0 0.047 0.232 0.876 0.0 0.140 0.093 0.087 0.0 0.094 0.140 0.0 0.138 2.471 TOTAL HOURS OF VALZD OBSERVATZONS TOTAL HOURS OF ELEVATED RELEASES TOTAL HOURS OF STABILITY CLASS G

TOTAL HOURS OF ELEVATED STABILITY CLASS G

2138.000 1955.510 60.630 52.830 METEOROLOGICAL FACILITY:

MET FACILITY LOCATED 1.3 KM ESE OF BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 45.30 AND 89.59 METERS WIND DIRECTION MEASURED AT 45.67 METER LEVEL WIND SPEED HEASURED AT 45.67 METER LEVEL EFFLUENT VELOCITY 55 12.60 M/S DATE PRINTED: 07/23/92 NOTE:

TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS

TA FR UEN I STABILITY CLASS A (DELTA T<~-1.9 C/100 M)

BROWNS FERRY NUCLEAR PLANT APR 1,

92 JUN 30, 92 BFN Rad Imp Jan-June 1

Page 66 of WIND DIRECTION N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW CALM 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.6>>1.4 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0

~ 0 0.0 0.0 0.0 0.0 0.0 0.0 1.5-3.4 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 WIND SPEED(HPH) 3.5-5.4 5.5-7.4 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0,0 0.0 0.0 0.0 0.0 0.0 0 '

0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0, 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 7.5-12.4 12.5-18.4 18.5-24.4

>~24.5 0.0 0.0 0.0 0.0 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 0.0 0.0 0.0 0.0 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 STABILITY OBSERVATIONS TOTAL HOURS OF STABILITY CLASS A

TOTAL HOURS OF VALID WIND DZRECTZON-WIND SPEED-STABILITY CLASS A TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS TOTAL HOURS CALM 2182 0

0 2158 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 MEAN WIND SPEED

~

0.0 MPH DATE PRZNTED: 07/23/92 NOTE:

TOTALS AND SUBTOTALS ABOVE ARE OBTAINED FROM UNROUNDED NUMBERS

R Q

I ED Y

IN D RECTION FOR STABILITY CLASS B

{-1.9<

'LTA T<~-1.7 C/100 M)

BROWNS FERRY NUCLEAR PLANT BFN Rad Im Jan-June 1

Page 67 of 7

APR 1,

92 - JUN 30, 92 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 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0 '

0 '

0.0 0.0 0.0 0

~ 0 0 '

0.0 0

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

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

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

0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 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'ALID STABILITY OBSERVATIONS 2182 TOTAL HOURS OF STABILITY CLASS B

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

0 TOTAL HOURS OF VALZD WZND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2158 TOTAL HOURS CALM 0

METEOROLOGICAL FACILITY: MET FACILITY LOCATED 1 '

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: 07/23/92 MEAN WIND SPEED

~

0.0 MPH NOTE:

TOTALS AND SUBTOTALS ABOVE ARE OBTAINED FROM UNROUNDED NUMBERS

STABILITY CLASS C

(-1 ~ 7<

LTA-T<~-1 ~ 5 C/100 M)

BROWNS FERRY NUCLEAR PLANT BPN Rad Imp Jan-June 1

Page 68 of APR 1,

92 JUN 30, 92 WIND DIRECTION N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW CALM 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.6-1.4 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.5-3.4 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0 '

0.0 0.0 0.0 0.0 0.0 0.0 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 WIND SPEED(MPH) 3.5-5.4 5.5-7.4 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0 '

0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0 '

0.0 0.0 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 0.046 0.0 0.0 0.0 0.0 7.5-12.4 12.5-18.4 18.5 24.4

>~24.5 0.0 0.0 0.0 0.0 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 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 0.0 0.0 0.0 SUBTOTAL 0.0 0.0 0.0 0.046 0.0 0.0 0.046 0.046 0.0 0.139 TOTAL HOURS OF VALID STABILITY OBSERVATZOHS 2182 TOTAL HOURS OF STABZLZTY CLASS C

~

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

3 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2158 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 '3 METER LEVEL DATE PRINTED: 07/23/92 MEAN WIND SPEED

?E 12.9 MPH NOTE:

TOTALS AND SUBTOTALS ABOVE ARE OBTAINED FROM UNROUNDED NUMBERS

JOINT PERCENTAGE FREQUENCZE OF PEED BY WEND DIRECTION FOR STABILITY CLASS D

t-1.5<

ELTA-T< -0.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT BFN Rad Im Jan-June 1

Page 69 of APR 1,

92 JUN 30, 92 WIND DZRECTION N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW CALM 0.0 0.0 0.0 0.0 0 '

0.0 0.0 0 '0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.6-1.4 0.0 0.0 0.0 0.046 0.0 0.046 0.093 0.0 0.046 0 '

0.093 0.0 0.0 0.0 0.046 0.093 1.5-3.4 0.046 0.232 0.232 0.139 0.324 0.278 0.927 0.324 0.463 0.371 0.556 0.510 0.232 0.046 0.093 0.0 WIND SPEED(MPH) 3.5-5.4 5.5-7.4 0.463 0.278 0.232 0.185 0.232 0.510 0.602 0.417 0.278 0.185 0.046 0.417 0.741 0.510 0.834 0.185 1.622 1.019 0.556 0.371 0.278 1.854 0.649 0.602 0.880 0.463 0.695 1.066

1. 668 1.483 1.900 0.695

2. 085 1.344 0.741 0.139 0.093 1.807 1.946 1.483 1.576 0.741 0.741 0.834 0.649 0.278 2.039

1. 761 0.695 0.788 0.046 0.0 0.0 0.0 1.158 1.019 0.185 0.046 0.371 0.046 0.278 0.139 0.695 0.324 7 '-12.4 12.5-18.4 18.5-24.4

>~24.5 0.139 0.093 0.0 0.0 0.0 0.0 0.093 0.185 0.0 0.0 0.0 0.0 0.0 0.046 0.093 0.0 TOTAL 5.097 4.124, 1.946 0.973

1. 019 5.051 6.673 4.449 3.753 2.178 2.919 3.383 4.124 3.105 6.024 3.197 SUBTOTAL 0.0 0.463 4.773 6.163 6.117 15.802 18.258 5.792 0.649 58.017 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2182 TOTAL HOURS OF STABILITY CLASS D

1268 TOTAL HOURS OF VALID WZND DIRECTION-WIND SPEED-STABILITY CLASS D

1252 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATZONS 2158 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 WZND SPEED AND DIRECTION MEASURED AT THE 92.63 METER LEVEL DATE PRINTED: 07/23/92 MEAN WIND SPEED

~

11.2 MPH NOTE:

TOTALS AND SUBTOTALS ABOVE ARE OBTAINED FROM UNROUNDED NUMBERS

J INT PER ENTAGE E

STABILITY CLASS E

(-0.5<

LTA-T<~ 1.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT BFN Rad Im Jan-June 1

Page 70 of APR 1,

92 JUN 30, 92 WIND DIRECTION N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW CALM 0.0 0.010 0.003 0.006 0.013 0.019 0.010 0.013 0.003 0.013 0.019 0.003 0.003 0.006 0.010 0.006 0.6-1.4 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.046 0.139 0.046 0.0 O.D 0.046 0.0 1.5-3.4 0.0 0.139 0.046 0.093 0.185 0.278 0.139 0.185 0.046 0.139 0.139 0.0 o.o46 D.D93 0.093 0.093 WIND SPEED(MPH) 3.5-5.4 5.5-7.4 0.232 0.185 0.139 0.278

0. 417 0.417 0.463 0.556 0.232 0.185 0.185 0.185 0.139 0.185 0.093 0.046

0. 695 0.880 0.602 0.093 0.556

1. 112 1.066 0.834 0.649 0.510 0.834 0.324 0.463 0.093 0.139 0.278 1.437 0.880 0.602 0.417 0.093 1.251 1.437 0.463 0.602 0.834 1.158 0.371 0.139 0.139 0.278 0.695 0.093 0.093 0.093 0.046 0.046 0.046 0.232 0.556 0.0 0.232 0.093 0.0 0.0 0.0 0.0 0.093 7.5-12.4 12.5-18.4 18.5 24.4

>%24.5 0.0 0.0 0.0 0.0 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 2.641 2.373, 1.486 1.119 1.357 3.309 3.949 3.118 1.625 2.145

2. 614 1.115 0.884 0.748 0.658 1.258 SUBTOTAL 0.139 0.278 1.715 2.780 3.939 9.129 10.797 1.622 0.0 30.398 TOTAL HOURS OF VALID STABZLITY OBSERVATZONS 2182 TOTAL HOURS OF STABILITY CLASS E

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

656 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2158 TOTAL HOURS CALM 3

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: 07/23/92 MEAN WIND SPEED

~

10.8 MPH NOTE:

TOTALS AND SUBTOTALS ABOVE ARE OBTAINED FROM UNROUNDED NUMBERS

OZ P

R PEED BY IND DIRECTION FOR STABILITY CLASS F

{ 1.5<

LTA-T<~ 4.0 C/100 M)

BFN Rad Im Jan-June 1

Page 71 of BROWNS FERRY NUCLEAR PLANT APR 1,

92 - JUN 30, 92 WIND DIRECTION N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW CALM 0.014 0.0 0.0 0.005 0

~ 0 0.005 0.014 0.005 0.014 0.005 0.009 0.0 0.009 0.005 0.0 0.009 0.6-1.4 0.046 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 3.5-3.4 0.093 0 '

0.0 0.046 0.0 0.046 0.139 0.0 0.139 0.046 0.046 0.0 0.093 0.046 0.0 0.093 WIND SPEED{MPH) 3.5-5.4 5.5-2.4 0.046 0.0 0.0 0.046 0.0 0.046 0.0 0.093 0.046 0.046 0.0 0.185 0.278 0.185 0.139 0.093 0.0 0.0 0.0 0.046 0.046 0.185 0.046 0.046 0.046 0.046 0.185 0.0 0.0 0.046 0.0 0.0 0.093 0.046 0.232 0.046 0.185 0.139 0.232 0.463 0.371 0.278 0.139 0.232 0.046 0.0 0.093 0.0 0.232 0.232 0.185 0.0

0. 139 0.232 0.093 0.093 0.278 0.232 0.602 0.093 0.046 0.0 0.0 0.046 0.093 0.232 0.093 0.0 0.0 0.046 0.0 0.0 0.093 0.232 0.0 0.0 0.0 0.0 0.0 0.093

7. 5-12. 4

'12. 5-18. 4 18.5-24. 4 24.5 0.0 0.0 0.0 0.0 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 0.616 0.556, 0.556 0.190 0.417 0.653 0.941 0.839 0.894 0.839 1.075 0.417 0.287 0.236 0.139 0.241 SUBTOTAL 0.093 0.139 0.788 0.834 1.066 2.595 2.502 0.880 0.0 8.897 TOTAL HOURS OF VALID STABIIITY OBSERVATZONS 2182 TOTAL HOURS OF STABILITY CLASS F

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

192 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED STABILITY OBSERVATIONS 2158 TOTAL HOURS CALM 2

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: 07/23/92 MEAN WIND SPEED

~

10.6 MPH NOTE:

TOTALS AND SUBTOTALS ABOVE ARE OBTAINED FROM UNROUNDED NUMBERS

JOINT PERCEN A E U

STABILITY CLASS G

(DELTA

> 4.0 C/100 M)

BROWNS FERRY NUCLEAR PLANT APR 1,

92 - JUN 30, 92 BFN Rad Im Jan-June 1

Page 72 of WZND DIRECTION N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW CALM 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.6-1.4 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 1.5-3.4 0.0 0.0 0.0 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 WIND SPEED(MPH) 3.5-5.4 5.5-7 '

0.0 0.0 0.0 0.0 0.046 0.046 0.0 0.093 0.0 0.0 0.046 0.0 0.0 0.046 0.093 0.0 0.0 0.0 0.046 0.046 0.0 0.046 0.093 0.371 0.093 0.0 0.139 0.0 0.0 0.0 0.093 0.0 0.046 0.093 0.093 0.0 0.0 0.0 0.046 0.093 0.0 0.046 0.046 0.0 0.0 0.0 0.0 0.0 0.139 0.139 0.093 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 7.5-12.4 12.5-18.4 18.5-24.4

>~24.5 0.0 0.0 0.0 0.0 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 0.185 0.278 a

0.232 0.046 0.046 0.093 0.185 0.602 0.185 0.046 0.278 0.046 0.0 0.046 0.278 0.0 SUBTOTAL 0.0 0.046 0.046 0.278 0.371 0.927 0.463 0.417 0.0 2.549 TOTAL HOURS OF VALID STABIZZTY OBSERVATZONS 2182 TOTAL HOURS OF STABILITY CLASS G

55 TOTAL HOURS OF VALID WIND DZRECTZON-WIND SPEED-STABILITY CLASS G

55 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2158 TOTAL HOURS CALM 0

METEOROLOGICAL FACILITY: MET FACZLITY 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 DIRECTION MEASURED AT THE 92.63 METER LEVEL MEAN WIND SPEED

~

11.0 MPH DATE PRINTED: 07/23/92 NOTE:

TOTALS AND SUBTOTALS ABOVE ARE OBTAINED FROM UNROUNDED NUMBERS

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

EFFLUENT AND WASTE DISPOSAL SEMIANNUAL REPORT 5208

EFFLUENT AND WASTE DISPOSAL SEMIANNUAL REPORT

SUMMARY

FIRST HALF 1992 The radioactive effluents for the first half of 1992 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 10 CFR 20 Appendix B and 10 CFR 50 Appendix I limits.

Page 1 of 17

EFFLUENT AND WASTE DISPOSAL SEMIANNUAL REPORT SUPPLEMENTAL INFORMATION FIRST HALF 1992 I.

Re ulator 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

0

EFFLUENT AND WASTE DISPOSAL SEMIANNUAL REPORT SUPPLEMENTAL INFORMATION FIRST HALF 1992 II.

aximum 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 Section III.

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 in Section III.

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

g3

+

g4 1

2.19 35.7 Q3 = The release rate from the building exhaust vents in pCi per second.

Q4 = The release rate from the main stack in pCi per second.

Page 3 of 17

0

EFFLUENT AND WASTE DISPOSAL SEMIANNUAL REPORT SUPPLEMENTAL INFORMATION FIRST HALF 1992 II.

Maximum Permissible Concentrations (Continued)

D.

Liquid Effluents 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:

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 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 FIRST'ALF 1992 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 each 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.

First Second guarter Quarter Units 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 47 13226 550 281 160 55387 47 12019 345 256 60 Each Minutes Minutes Minutes Minutes 25320 cfs B.

Gaseous None VI.

ABNORMAL/UNPLANNED RELEASES (1)

A.

Liquid B.

Gaseous NUMBER OF RELEASES None None TOTAL ACTIVITY None None (1)

All abnormal/unplanned releases shall be discussed in the summary.

Page 5 of 17

EFFLUENT AND WASTE DISPOSAL SEMIANNUAL REPORT FIRST HALF 1992 LIQUID EFFLUENTS SUMMATION OF ALL RELEASES A.

Fission and Activation Products First Second Unit guarter Quarter

% Error 1.

Total Releases Curies 6.65E-01 2.12E-01 2.

Average Diluted Concentration Released During Period 3.

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

B.

Tritium pCi/ml 2.27E-08 7.90E-09 2.27E+01 7.90E+00 1.

Total Releases Curies 5.97E+00 5.21E+00 2.

Average Diluted Concentration Released During Period 3.

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

C.

Dissolved and Entrained Noble Gases pCi/ml 2.04E-07 1.94E-07 6.81E-03 6.46E-03 1.

Total Releases Curies 5.78E-02 8.56E-03 2.

Average Diluted Concentration Released During Period 3.

Percent of Applicable Limit (2E-04 pCi/ml)

D.

Gross Alpha Radioactivity pCi/ml 1.98E-09 3.18E-10 9.88E-04 1.59E-04 1.

Total Releases Curies ND 2.13E-04 48 2.

Average Diluted Concentration Released During Period pCi/ml ND 7.92E-12 E.

Volume of Liquid Waste to Discharge Canal (Before dilution)

Liters 5.50E+06 5.25E+06 3

F.

Volume of Dilution Water for Period Liters 2.92E+10 2.69E+10 10 G.

Total CCW flow for Six Months gigagallons 150.1 Includes Xe-133, Xe-135, and others 1

Page 6 of 17

EFFLUENT AND WASTE DISPOSAL SEMIANNUAL REPORT LIQUID RELEASES FOR FIRST HALF 1992 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 First Quar'ter Unit Curies 6.90E-02 2.43E-02 3.38E-02 ND 7.21E-02 E

7.69E-02 Second Quarter Unit Curies 3.15E-03 5.21E-03 2.74E-03 2.72E-02 7.51E-03 9.

Mo-Te-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 7.04E-02 9.87E-03 1.70E-02 1.06E-03 1.88E-02 3.64E-02 4.25E-03 2.49E-04 ND 3.77E-03 1.30E-03 6.21E-03 1.96E-03 5.54E-03 6.72E-03 2.89E-03 8.69E-02 1.99E-02 3.03E-03 Page 7 of 17

EFFLUENT AND WASTE DISPOSAL SEMIANNUAL REPORT LIQUID RELEASES FOR FIRST HALF 1992 BATCH MODE

~Isoto e

(Not Required by Regulation (REG) Guide 1.21)

First Quarter Second Quarter 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.

Sr-91 ll.

Sr-92 12.

Ru-103 13.

Kr-85 2.25E-01 2.78E-02 4.01E-03 4.09E-05 4.25E-04 3.30E-05 1.62E-08 3.85E-03 3.95E-05 2.87E-04 2.19-02 6.25E-04 3.74E-02 3.87E-03 1.33E-04 ND 1.42E-12 ND ND Page 8 of 17

EFFLUENT AND HASTE DISPOSAL SEMIANNUAL REPORT FIRST HALF 19921 GASEOUS EFFLUENTS SUMMATION OF ALL RELEASES Summation of All Releases A.

Fission and Activation Gases Unit First quarter Second guarter

% Error 1.

Total Releases 2.

Average Release Rate for Period 3.

Percent of Technical Specification (TS) limitl B.

Iodines Curies 8.84E+02 1.60E+03 7.82E-04 1.38E-02 pCi/sec 1.12E+02 2.04E+02 1.

Total Iodine-131 6 I-133 Ci 1.99E-02 2.95E-02 36 2.

Average Release Rate for Period 3.

Percent of TS limit pCi/sec e/

2.54E-03 9.29E-02 3.75E-03 1.42E-01 C.

Particulates 1.

Particulates with half-lives

> eight days Ci 6.52E-03 2.83E-03 35 2.

Average release rate for period 3.

Percent of TS limit 4.

Gross alpha radioactivity D.

Tritium pCi/sec 8.29E-04 3.61E-04 2.99E-02 1.52E-02 Ci 1.91E-06 ND 1.

Total release Ci 2.21E+00 4.95E+00 21 2.

Average release rate for period 3.

Ground level release 4.

Elevated release pCi/sec 2.81E-Ol 6.92E-Ol Ci 2.10E+00 4.82E+00 Ci 1.03E-01 1.23E-01 Reporting period 182 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, I-133, 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 FIRST HALF 19921 GASEOUS EFFLUENTS ELEVATED RELEASE 1.

Fission Gases Unit First Second Quarter Quarter Kr-85m Kr-85 Kr-87 Kr-88 Xe-133 Xe-135m Xe-135 Xe-138 Others (specify)

Ar-41 Total for Period Ci Ci Cj Ci Ci Ci Ci Ci 2.54E+02 3.37E+02 ND ND 3.76E+01 8.12E+Ol 2.95E+02 5.01E+02 2.65E+02 4.88E+02 ND ND 5.33E+02 7.99E+00 ND ND 2.60E+Ol 4.16E+Ol 8.84E+02 1.46E+03 2.

Iodines I-131 I-132 I-133 I-134 I-135 Total for Period Cj Cj Ci Ci Ci Ci 1.05E-03 1.18E-03 2.42E-03 5.03E-03 3.16E-03 4.17E-03 ND ND 5.31E-03 7.82E-03 1.19E-02 1.82E-02 Page 10 of 17

EFFLUENT AND HASTE DISPOSAL SEMIANNUAL REPORT FIRST HALF 1992 GASEOUS EFFLUENTS ELEVATED RELEASE Unit First guarder Second Quarter 3.

Particulates Sr-89 1 Sr-90 1 Cs-134 Cs-137 Ba-140 La-140 Cj Ci Ci Cj Cj Ci 9.67E-05 1.51E-05 2.88E-07 ND ND ND ND 7.10E-06 1.16E-04 1.05E-04 7.10E-05 2.96E-05 Others (specjfy)

Cr-51 Ba-139 Ag-110M Ce-141 Co-58 Co-60 Mn-54 Mn-56 MoTc-99m Na-24 Zn-65 Ci Ci Ci Ci Cj Ci Ci Ci Cj Ci Ci ND ND ND ND ND ND ND 1.17E-03 ND ND ND ND 6.66E-02 ND ND ND ND ND ND ND ND ND Total for Period 4.

Tritium Predicted estimation of releases.

Ci Ci 1.46E-03 6.68E-02 1.03E-01 1.23E-01 Include all particulate nucljdes (even those with half-lives 8 days)

Page ll of 17

II 0

EFFLUENT AND WASTE DISPOSAL SEMIANNUAL REPORT FIRST HALF 1992 GASEOUS EFFLUENTS -'ROUND LEVEL RELEASE Unit First Second guarder Quarter 1.

Fission Gases Kr-85m Kr-85 Kr-87 Kr-88 Xe-133 Xe-135m Xe-135 Xe-138 Ci Cj Ci Cj Ci Ci Ci Cj ND ND ND ND ND ND 3.50E+01 ND ND 9.16E-03 8.41E+01 ND ND 9.43E-03 2.81E+01 Others (specify)

Ar-41 Total for Period Ci Cj ND ND 1.90E-02 1.47E+02 2.

Iodines I-131 I-132 I-133 I-134 I-135 Total for Period Ci Ci Ci Ci Ci lt 1.38E-03 2.43E-03 4.53E-03 6.42E-02 1.44E-02 2.17E-02 4.81E-02 ND 1.05E-02 2.70E-02 7.89E-02 1.15E-Ol Predicted estimation of releases.

Page 12 of 17

V

EFFLUENT AND WASTE DISPOSAL SEMIANNUAL REPORT FIRST HALF 1992 GASEOUS EFFLUENTS GROUND LEVEL RELEASE 3.

Particulates2 Sr-89 1 Sr-90 1 Cs-134 Cs-137 Ba-140 La-140 Others (specify)

Unit Ci Ci Ci Ci Ci First Second guarter guarter 1.22E-05 2.40E-04 ND 2.33E-07 1.38E-04 ND 5.47E-05 2.32E-04 3.05E-04 2.02E-04 Ag-110m Ba-139 Ce-141 Co-58 Co-60 Cr-51 Mn-54 Mn-56 MoTc-99m Na-24 Zn-65 Ci Ci Ci Ci Ci Ci Ci Ci Ci Ci Ci ND ND 1.94E-05 ND 1.55E-04 2.26E-04 ND 4.15E-03 ND ND ND 1.01E-04 2.60E-01 1.99E-05 9.63E-05 1.97E-04 1.15E-03 1.38E-04 8.72E-02 4.22E-04 2.04E-02 3.06E-04 Total for Period 4.

Tritium Ci Ci 5.06E-03 3.70E-01 2.12E+00 5.21E+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 FIRST HALF 1992 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.

• b, C ~

Spent resins, filter

sludges, evaporator bottoms, etc.

Dry compressible waste contaminated equip., etc.

Irradiated components, control rods, etc.

m3 Ci m3 Ci m3 Ci 9.56E+01 1.47E+02 6.46E+01 1.08E+03 7.00E+00 3.41E+04 1.50E+01 1.50E+01 1.50E+01 d.

Other m3 Ci O.OOE+00 O.OOE+00 N/A Dry compressible waste shipped from processor to the burial ground:

~4E~1 m3, ~114E 01 Ci.

1hese numbers are included in b.

2.

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

Spent resins, filter sludge, evaporator bottoms, etc.

Nuclide Percenta e

Ci l.

Iron 55 (2) 2.

Cobalt-60 (1) 3.

Cesium-134 (1) 4.

Cesium-137 (1) 5.

Nickel-63 (1) 6.

Manganese-54 (1) 7.

Iodine-131 (1) 3.51E+00 2.75E+01 5.10E+00 3.30E+Ol 1.93E+01 2.51E+00 1.00E+00 9.

Zinc-65 (1) 10.

Other nuclides (2)

(1) Measured (2) Calculated 5.90E+00 1%

8.

Barium/Lanthanum-140 (1) 1.15E+00

, 5.15E+00 4.03E+01 7.45E+00 4.83E+01 2.82E+01 3.68E+00 1.48E+00 1.69E+00 8.70E+00 1.57E+00 Page 14 of 17

0 0,

EFFLUENT AND WASTE DISPOSAL SEMIANNUAL REPORT FIRST HALF 1992, SOLID WASTE AND IRRADIATED FUEL SHIPMENTS (Continued)

A.

Solid Waste Shipped Offsite For Burial Or Disposal

{Not Irradiated Fuel) (Continued) 2.

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

Dry compressible

waste, contaminated equipment, etc.

Nuclide Percenta e

Ci 1.

Iron-55 (2) 2.

Cobalt-60 (2) 3.

Nickel-63 (2) 4.

Antimony-125 (2)

(1) Measured (2) Calculated 2.64E+01 3.10E+Ol 3.93E+01 3.16E+00 2.85E+02 3.35E+02 4.24E+02 3.40E+Ol c.

Irradiated components, control rods, etc.

Nuclide Percenta e

Ci 1.

Iron-55 (2) 2.

Colbalt-60 (2) 3.

Nickel-63 {2)

(1)

Measured (2)

Calculated 3.

Solid Waste Disposition 1.62E+Ol 7.91E+01 4.30E+00 5.53E+03 2.70E+04 1.48E+03 Number of

~Shi ments 29 36 Mode of Trans ortation Sole Use Truck Sole Use Truck Sole Truck Destination

Barnwell, SC

Quadrex, Oak Ridge, TN

SEG, Oak Ridge, TN Page 15 of 17

0

EFFLUENT AND WASTE DISPOSAL SEMIANNUAL REPORT FIRST HALF 1992 SOLID WASTE AND IRRADIATED FUEL SHIPMENTS'Continued)

B.

Irradiated Fuel Disposition Number of

~shi ments None C.

Description of Shipments Mode of Trans ortation N/A Destination N/A Number of

~Shi ments Type Type Number of Container

~nantit Containers Container Volume Type Waste 41 Strong Tight Container (STC)

A-LSA See Note See Note DAW 13 High Integrity Container (HIC)

A-LSA 13 5.83m3 Dewatered Resin HIC A-LSA 4.84m3 Dewatered Resin HIC A-LSA 3.75m3 Dewatered Resin HIC B-LSA 3.75m3 Dewatered Resin HIC IICII 3.4lm3 DAW fuel pool filters Steel Liner IIC II 1.6m3 Irradiated Hardware Steel Liner IIC II

.2lm3 Irradiated Hardware Solidification agents used:

None Absorbents used:

None Page 16 of 17

0

EFFLUENT AND WASTE DISPOSAL SEMIANNUAL REPORT FIRST HALF 1992 SOLID WASTE AND IRRADIATED FUEL SHIPMENTS'Continued)

C.

Description of Shipments (Continued)

NOTE:

41 shipments to waste processor contained the following:

Type of P~aeka e

40'ealand (STC) 20'ealand (ST)

"FR" Box (STC)

"B" Box (STC)

"Fuel Channel" Box (STC)

Number of

'Packa ea 19 Volume Each Packa e

m3 72.50 36.25 06.40 02.66 01.90 "7A/55 Gallon" Drums STC)

Leaded Shroud Head Bolt Box 1832 00.21 12.90 Page 17 of 17

0,

ENCLOSURE 3

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

INOPERABLE RADIOLOGICAL EFFLUENT INSTRUMENTATION REPORT

INOPERABLE RADIOLOGICAL EFFLUENT INSTRUMENTATION REPORT This report is to comply with Browns Ferry Nuclear Plant Technical Specifications (TSs), Sections 3.2.D.2, 3.2.K.2 Offsite Dose Calculation Manual (ODCM), section III of 1/2.1.1 and 1/2.1.2.

The BFN TS sections and ODCM section 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 During the reporting period, January 1 through June 30, 1992, 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 BROWNS FERRY NUCLEAR PLANT (BFN)

CHANGES TO THE BFN OFFSITE DOSE CALCULATION MANUAL JANUARY THROUGH JUNE 1992

CHANGES TO THE ODCM BFN Techanical 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 betwee'n January through June 1992.

During this period, three revisions have been made to the ODCM.

Revision 9

was a general revision and is submitted in its entirety.

In Revisions 10 and 11, only the pages affected by the changes are submitted.

Reference the attached notebook which contains the above changes.

0 Page 1 of 1

0