ML20206F793
| ML20206F793 | |
| Person / Time | |
|---|---|
| Site: | Browns Ferry  |
| Issue date: | 12/31/1998 |
| From: | TENNESSEE VALLEY AUTHORITY |
| To: | |
| Shared Package | |
| ML18039A770 | List: |
| References | |
| NUDOCS 9905060241 | |
| Download: ML20206F793 (190) | |
Text
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ENCLOSURE 1 TENNESSEE VALLEY AUTHORITY BROWNS FERRY NUCLEAR PLANT (BFN)
' UNITS.1, 2, AND 3 RADIOLOGICAL IMPACT ASSESSMENT REPORT 1998 .
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TABLE OF CONTENTS I. Introduction El-2 II. Dose Limits El-2 III. Dose Calculations El-3 IV. Doses from Airborne Effluents El-3 V. Doses from Liquid Effluents El-5 VI. Population Doses El-5 VII. Offsite Direct Radiation Dose El-6 i VIII. Dose to a Member of the Public El-6 )
Inside the Site Boundary IX. Total Dose El-6 J
4 9905060241 990429 I El-1 PDR ADOCK 05000259:
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TABLE OF CONTENTS (Continued)
Listing of Tables
- Table 1 - Doses from-Airborne Effluents - First Quarter El-8 Table 2 - Doses _from Airborne Effluents - Second-Quarter El-9 Table 3 - Doses from Airborne Effluents - Third Quarter El-10
. Table 4 - Doses lfrom Airborne Effluents - Fourth Quarter El-11 -
Table 5 . Doses from Liquid Effluents - First Quarter El-12 Table 6 . Doses ~from Liquid Effluents - Second Quarter El-13
. Table 7 - Doses from Liquid Effluents - Third Quarter El-14 Table 8 - Doses from Liquid Effluents - Fourth Quarter El-15 Table 9 - Total Dose from Fuel Cycle El-16 Table 10 -Joint Frequency Distribution in Percent for E2 Ground Level Releases - First Quarter E2-9 l Table.11 -Joint Frequency Distribution in Percent for E2 Ground Level Releases - Second Quarter E2-17
. Table 12 -Joint Frequency Distribution in Percent for E2 Ground Level Releases - Third Quarter E2-25 Table 13.-Joint Frequency Distribution in Percent for E2 Ground' Level Releases - Fourth Quarter E2-33 Table 14 -Joint Frequency Distribution in Percent for E2 Split Level Releases (Ground Level E2-41 Portion) - First Quarter Table-15 -Joint Frequency. Distribution in Percent for E2-41 Split Level Releases (Ground Level E2-49
-Portion)'- Second Quarter
, Table 16 -Joint Frequency Distribution in Percent for E2 ' Split Level Releases (Ground Level E2-57
-Portion) - Third Quarter El-la
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l TNBLE . 0F CONTENTS (Continued)
Listing of Tables Table 17 -Joint Frequency Distribution in Percent E2 for Split Level Releases (Ground Level E2-65 Portion) - Fourth Quarter Table 18 -Joint Frequency Distribution in Percent for E2 Split Level Releases (Elevated Level E2-73 Portion)-'- First Quarter Table 119 -Joint Frequency Distribution in Percent for E2 Split Level Releases (Elevated Level E2-81 Portion) - Second-Quarter
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Table 20 -Joint Frequency Distribution in Percent for E2 )
Split Level Releases (Elevated Level E2-89 Portion) - Third Quarter Table 21 -Joint Frequency Distribution in Percent for E2 Split Level _ Releases (Elevated Level E2-97 Portion) - Fourth' Quarter Table'22 -Joint Frequency Distribution in Percent for E2 Elevated Releases - First Quarter E2-105
. Table 23 -Joint. Frequency Distribution in Percent for E2-106-Elevated' Releases - Second Quarter E2-113
-Table 24 -Joint Frequency Distribution in Percent for E2-114-Elevated Releases - Third Quarter E2-121 l
Table 25 -Joint Frequency Distribution in Percent for E2-122-Elevated-Releases - Fourth Quarter E2-129 i
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l Rrdiol:gicalImp:ct Assessment Br:wns F2rry Nucle:r Plant January - December 1998 L INTRODUCTION ,
Potential doses to the " maximum exposed individual" and the population around Browns Ferry are calculated for each quarter as required in Section 5.2 of the Offsite Dose Calculation Manual (ODCM). The methodology for determining plant releases for the reporting period used to estimate dose is specified in Sections 6 and 7 of the ODCM. Dispersion of radioactive effluents in the environment is estimated using meteorological data and river flow measured during the period. In this report, the doses resulting from releases are described and compared to limits established for Browns Ferry. j l
IL DOSE LIMITS The ODCM specifies limits for the release of radioactive effluents, as well as limits for doses to the general .
public from the release of radioactive effluents. These limits are set well below the Technical Specification l limits which govern the concentrations of radioactivity and doses prmissible in unrestricted areas. This ensures that radioactive effluent releases are As Low As Reasonably Achievable.
l The air dose limits in areas at and beyond the Site Boundary due to noble gases released in gaseous j efiluents per unit are:
$ 5 mrad per quarter and
$ 10 mrad per year for gamma radiation.
- and -
$ 10 mrad per quarter and
$ 20 mrad per year for beta radiation.
The dose limits to a Member of the Public in an unrestricted area from radioiodines, radioactive materials in particulate form, and radionuclides other than noble gases with half-lives > 8 days released in gaseous effluents for each unit are:
5 7.5 mrem per quarter and
$ 15 mrem per year to any organ. ,
1 The dose or dose commitment to a Member of the Public from radioactive material in liquid effluents released to unrestricted areas are:
$ 1.5 mrem per quarter and
$ 3 mrem per year to the total body,
- and -
$ 5 mrem per quarter and
$ 10 mrem per year to any organ.
The limit for the total effective dose equivalent to an individual Member of the Public inside the site boundaryis: l 100 mrem per year. I The EPA limits for total dose to any Member of the Public in the vicinity of a nuclear power plant, l established in the Emironmental Dose Standard of 40 CFR 190, are:
$ 25 mrem per year to the whole body,
$ 75 mrem per year to the thyroid,
- and -
$ 25 mrem per year to any other organ.
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p R:di:ligicd impact Assessenent Brzwzs Ferry Nucle r Plant Jarmary- December 1998 IIL RQ}XfALCULATIONS p Estimated doses to Members of the Public are determined using computer models (the Gaseous Effluent l 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 to ensure conservative reporting data. Mwy of these factors are obtain-d from NUREG/CR 1004. The values chosen will tend to overestimate the dose.
- The expected dose to actual individuals is lower. The calculated doses are presented in Tables 1,2, 3,4,5, 6, 7, 8, and 9.-
IV. DOSES FROM AIRBORNE EFFLUENTS For airborne effluents, Members of the Public can be exposed to radiation from several sources: direct l' radiation from the radioactivity in the air, direct radiation from radioactivity deposited on the ground, inhalation of airborne radioactivity, ingestion of vegetation which contains radioactivity deposited from the l, atmosphere, and ingestion of milk and beef which contains radioactivity deposited from the atmosphere onto l . vegetation and subsequently consumed by milk and beef animals.
Airborne Release Points There are four monitored release points from Browns Ferry Nuclear Plant: the turbine building, the radwaste building, the reactor building, and the stack.
l-j Releases from the turbine building are considered ground-level releases. The ground-level Joint Frequency
!' Distribution (JFD) is derived from windspeeds and directions measured 10 meters above ground and from the vertical temperature difference between 10 and 45 meters, and are presented for each quarter in Tables 10,11,12, and 13.
l- . Releases from the radwaste and reactor I;uildings are considered split-level releases. Portions of the release l are treated as ;round-letl while other portions are considered elevated depending on the ratio of the vertical exit velocity to the horizontal wind speed. The split-level dispersion approach is implemented urhg a m%:1 that requires two complete quarterly JFDs for each effluent vent, one for the ground-level releases and one for the elevated releases. The ground-level portion of the split-level JFD is based on wind speeds and directions measured 10 meters tbove ground-level and from the vertical temperature difference between I- 10 and 45 meters. The elevated portion of the split-level JFD is based on wind speeds and direction measurements at the 45 meter level and the vertical temperature difference between 45 and 91 meters. Both of these JFDs are given for each quarter in Tables 14,15,16,17,18,19,20, and 21.
Releases from the stack are considered to be elevated releases. The JFDs for elevated releases a.c based on l_ wind directions and wind speeds measured at 91 meters and the vertical temperature difference between 45 L and 91 ructers, and are given for each quarter in Tables 22,23,24, and 25.
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Radi:l:gicalImplet Assessment-Briw s Fzrry Nucle:r Plant -
l: , January - December 1998 l- m '
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Meteorolonical Data L.
- Meteorological variables at BFN are measured continuously. Measurements collected include wind speed,
- wind direction, and temperature at heights of 10, 45, and 91 meters above the ground. Quarterly 'oint Frequency Distributions (JFDs) are calculated for each release point using the appropriate levels J 7 meteorological data. A JFD 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 Gc 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 1.6 m/s (3.5 mph). Stability classes are
- determined from the vertical temperature difference between two measurement levels. ~
i The generally open terrain around BFN does not cause any significant effects on the transport and l . dispersion of gaseous efnuents 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
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transport and dispersion in the immediate vicinity of BFN during periods of winds with a southerly component, overcast skies, and relatively high wind speeds Also, the lower layer (10-45 meters) stability class tends to be more stable. However, during this infrequent condition, dose estimates will be conservative.
External Exnesure Dese Dose calculated for maximum external air dose (gamma-air and beta-air ) are made for points at and beyond the unrestricted area boundary as described in the BFN ODCM. The highest of these doses is then selected.
Submersion Dose External doses to the skin and total body, due to submersion in a cloud of noble gases, are calculated for the nearest residence in each sector. The residence with the highest dose is then selected from all sectors.
Orman Dose Dose to an organ due to releases of airborne efHuents are estimated for the inhalation, ground contamination, and ingestion pathways. The ingestion pathway is further divided into three possible
- contributing pathways: ingestion of cow / goat milk, ingestion of beef, and ingestion of vegetables. Doses
. from applicable pathways are calculated for each receptor location identified in the most recent land use survey, To determine the maximum organ dose, the doses from the pathways are summed for each receptor.
For the ingestion dose, however, only those pathways that exist for each receptor are considered in the sum, i.e., milk ingestion doses are included only for locations where milk was consumed without commercial
- preparation and vegetable ingestion is included only for those locations where a garden was identified. To conservatively account for beefingestion, a beefingestion dose equal to that for the highest unrestricted area boundary location is added to each identified receptor, For ground contamination, the dose added to the
, organ dose being calculated is the total body dose calculated for that location, i.e., it is assumed that the dose to an individual organ is equal to the total body dose.
The maximum organ dose, thyroid dose, and total body doc from airborne efnuents are presented in Tables I 1,2,3, and 4.-
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- R dirlogicalImpact Assessment .
L Erswns Fzrry Nuclear Plant January - December 1998
' V. DOSES FROM LIOUID EFFLUENTS
" For liquid emuents, the public can be exposed to radiation from three sources: the ingestion of water from the Tennessee River, the ingestion of fish caught in the Tennessee River, and direct exposure from radioactive material deposited on the river shoreline sediment (recreation).
The concentration of radionuclides in the Tennessee River are calculated by a computer model which uses ir.ca.mai hydraulic data downstream of BFN. 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. The models that are used to estimate doses, as well as the parameters input to the models, are described in detail in the BFN ODCM.
Lianid Release Points and Rives Data
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Radionuclide concentrations in the Tennessee River are calculated assuming that releases in liquid emuents -
are continuous. When necessary, liquid releases from BFN, located at Tennessee River Mile 294, are made through drifusers 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 tme until the water is completely mixed at the first downstream dam (Wheeler Dam), at Tennessee River Mile 283.0.
' Doses are calculated for locations within a 50 mile radius downstream of the plant site. The maximum potential recreation dose is calculated for a location immediately downstream from the plant's release point.
The maximum exposed 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. The maximum exposed individual dose from drinking water is assumed to be that calculated at the nearest downstream public water supply [ West Morgan - East Lawrence (WMEL)). This could be interpreted as indicating that the maximum exposed individual, as assumed for liquid releases from Browns Ferry, is an indisidual who -
obtains all of his drinking water at WMEL, consumes fish caught from the Tennessee River between BFN and Wheeler Dam, and spends 500 hours0.00579 days <br />0.139 hours <br />8.267196e-4 weeks <br />1.9025e-4 months <br /> per year on the shorelinejust downstream of the plant's release .
' point. Doses calculated for the maximum exposed individual due to liquid emuents for each quarter in the period are presented in Tables 5,6,7, and 8, along with the average river flows past the plant site for the -
periods.
' VI. POPULATION DOSES Population doses due to airborne emuents are calculated for an estimated 627,000 persons lising within a 50-mile radius of the plant site. Doses from external pathways and inhalation are based on the 50-mile human population distribution. Ingestion population doses are calculated assuming that each indisidual consume'd milk, vegetables, and meat produced within the sector in which the indisidual resides.
Population doses due to liquid emuents are calculated for the entire downtream Tennessee River population. Water ingestion population doses are calculated using actual population figures for downtream public water supplies. Fish ingestion population doses are calculated assuming that all sport fish caught in the Tennessee River are consumed by the Tennessee Piver population. Recreation population doses are calculated using historical recreational ~ data on the number of shoreline visits at downstream lodions.
Population doses calculated for airborne and liquid emuents are presented in Tables 1,2,3,4,5,6,7, and 8.
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Radi:l:gicalImpact Assessment L
Cr wns Fctry Nucle:r Plant L January - December 1998 t-l L
VIL OFFSITE DIRECT RADIATION DOSE External gamma radiation levels were measured by thermoluminescent dosimeters (TLDs) deployed
- around BFN as part of the offsite Radiological Environmental Monitoring Program (REMP). The quarterly gamma radiation levels determined from these TLDs during this reporting period averaged approximately 16.5 mrem / quarter at onsite (at or near the site boundary) stations and approximately
' 14.3 mrem / quarter at offsite stations or approximately 2.2 mrem / quarter higher onsite than at offsite stations. This difference is consistent with levels measured for pre-operation and construction phases of TVA nuclear plants where the average radiation levels onsite were generally 2-6 mrem / 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.
VIII. DOSE TO A MEMBER OF THE PUBLIC INSIDE THE SITE BOUNDARY Pursuant to ODCM section 7.7.5, a review was performed to determine the highest dose to a member of
' the public in the site boundary. This review assumed that onsite TVA employees engaged in work activities not associated with nuclear power electric generation were considered as members of the public. The dose to a member of the public consists of the sum of dose commitments from effluent releases as well as any direct radiation dose.
The dose from effluent releases consists ofinhalation, ingestion, and submersion doses. The inhalation dose commitment assumes that site occupancy factors are sufficiently low to compensate for the increase in the atmospheric dispersion above that for the site boundary. The ingestion dose commitments use the pathways and calculated values described presiously for beef, milk, and garden vegetable ingestion as well as the dose commitments from liquid effluents. The submersion dose is an external radiation dose commitment from gaseous effluents.
The direct radiation dose was determined from area TLDs located onsite. It consisted of gamma dose -
from the plume, ground contamination and from equipment sources (i.e., tanks, turbine shine, radioactive material storage areas, etc.). The highest direct radiation dose accounting for background and occupancy was 3.9 mrem during 1998.
The total annual dose is the sum of the direct radiation dose (3.9 mrem) and the effluent dose commitment (3.4E-02 mrem) or 3.93 mrem. It can be concluded that the dose limit for a member of the public inside the site boundary as specified in 10 CFR 20.1301 was not exceeded.
IX. 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 calculated 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 f_
- j. (for any organ other than the thyroid) from liquid effluents for each quarter, and any identifiable increase in i
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Radi:ligicalImp:ct Assessment-Browns Fzrry Nucle r Plant i January - December 1998 l: ' direct radiation dose levels as measured by the REMP. This dose is compared to the 40 CFR 190 limit for i~ - total body or any organ dose (other than thyroid) to determine compliance.
The annual thyroid dose to the maximum individual is conservatively estimated by summing the following doses: the total body air submersion dose for each quarter, the thyroid dose from airborne 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 REMP. This dose is compared to the 40 CFR 190 limit for thyroid dose to determine compliance.
Total dose from the fuel cycle is presented in Table 9.
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Radi:l;gicalImpact Assessment I Br:w:s Ferry Nucle r Pli.nt January - December 1998 Table 1 Doses from Airborne Effluents First Quarter Individual Doses Pathway Dose Quarterly Limit Percent of Limit Location j External '
Gamma Air 8.lE-04 mrad 5 mrad <1% SSE/6300 meters Beta Air 1.0E-03 m ad 10 mrad <1% SSE/6300 meters Suhmersion Total Body 1.2E-03 mrem NA NA WNW/5470 meters Skin 1.7E-03 mrem NA NA NNW/1639 meters Organ Doses Child / Bone 2.3E-02 mrem 7.5 mrem <1% NNW/1770 meters Childffhyroid 1.3E-0I mrem 7.5 mrem 1.7 % NNW/1770 meters Adultfrotal Body 7.9E-03 mrem 7.5 mrem <1% NNW/1770 meters Population Doses Total Body Dose 5.4E-02 man-rem l Maximum Organ Dose (organ) 4.6E-01 man-rem (thyroid)
Population doses can be compared to the natural background dosefor the entire 50-mile population of about $6,430 man-rem / year (based on 90 miemlyrfor natural background).
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RadiologicalImp:ct Assessment Br:wns Ferry Nucle:r Plant January - December 1998 Table 2 Doses from Airborne Effluents Second Quarter Individual Dong Pathway Dose Quarterly Limit Percent of Limit Location External Gamma Air 4.5E-04 mrad 5 mrad <1% NE/5300 meters Beta Air 8.7E-04 mrad 10 mrad <1% NE/5300 meters Submersion Total Body 1.6E-03 mrem NA NA N/2000 meters Skin 1.9E-03 mrem NA NA N/2000 meters Organ Doses Child / Liver 2.5E-02 mrem 7.5 mrem <1% N/2000 meters Child / Thyroid 1.3E-01 mrem 7.5 mrem 1.7 % N/2000 meters Adultfrotal Body 1.0E-02 mrem 7.5 mrem <1% N/2000 meters Population Doses Total Body Dose 3.9E-02 man-rere Maximum Organ Dose (organ) 5.3E-01 man-rem (th>Toid)
Population doses can be compared to the natura! background dosefor the entire 50-mile population of about 56,430 man-rem! year (based on 90 mremlyrfor natural background).
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, , - 3 Radi:ligicalImp:ct Assessment Br:wns F;.rry Nuclear Plant l
January - December 1998
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Table 3 Doses from Airborne Effluents Third Quarter ladividual Doses Pathway l Dose Quarterly Limit Percent of Limit Location External Gamma Air 1.7E-04 mrad 5 mrad <1 % NNW/6000 meters Beta Air 1.8E-04 mrad 10 mrad <l % NNWK3000 meters Submersion Total Body- 4.7E-04 mrem NA NA NNW/1639 meters Skin 5.6E-04 mrem NA NA NNW/1639 meters Organ Doses Child / Liver 8.3E-03 mrem 7.5 mrem <l % NNW/1770 meters ChildfThyroid 2.6E-02 miem 7.5 mrem <1 % NNW/1770 meters Childfrotal Body 5.0E-03 mrem 7.5 mrem <1 % NNW/1770 meters Population Doses Total Body Dose 2.9E-02 man-rem Maximum Organ Dose (crgan) 1.2E-01 man-rem (thyroid)
Population doses can be compared to the natural background dosefor the entire 30-mile population of about 36,.I30 man-rem & war (based on 90 mremhrfor natural background).
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Radirl:gicalImp;ct Assessment Crzwns F:rry Nucle:r Plant January- December 1998 Table 4 Doses from Airborne Emuents Fourth Quarter Individual Domes l
Pathway Dose Quarterly Limit Percent of Limit Location External Gamma Air 7.0E-05 mrad 5 mrad <1 % NNW/5630 meters Beta Air 3.5E-05 mrad 10 mrad <1 % NNW/5630 meters Submersion Total Body 7.8E-04 mrem NA NA NNW/1639 meters Skin 9.1E-04 mrem NA NA NNW/1639 meters Organ Doses Child / Liver 1.3E-02 mrem 7.5 mrem <1 % NNW/1770 meters ;
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- Childfrhyroid 1.2E-02 mrem 7.5 mrem <1 % NNW/1770 meters I Child frotal Body 8.5E-03 mrem 7.5 mrem <1 % NNW/1770 meters I
Population Doses Total Body Dose 2.0E-02 man-rem Maximum Organ Dose (organ) 2.2E-02 man-rem (liver)
Population doses can be compared to the natural backgroun. 'dosefor the entire SG-mile population of about $6,430 man-rendyear (based on 90 mrem /yrfor naturas background).
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R2di:l:gicalImp::ct Assessment -
Brzwns Ferry Nuclear Plant January - December 1998 Table 5 l Doses from Liquid Effluents First Qusrter*
Individual Doses (mrrm)
Age Group Organ Dose Pathway ' Dose Quarterly Percent of Limit Limit Total Body Fish Ingestion 0 Recreation 0 Water Ingestion 0 Total 0 1.5 mrem 0%
Liver Fish Ingestion 0 Recreation 0 .
Water Ingestion 0 d Total 0 5 mrem 0% -
Thyroid Fish Ingestion . O Recreation 0 Water Ingestion 0 Total 0 5 mrem 0%
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- No releases were made this quarter.
Average Riverflow past BFN (cubic feet per second): 84455 Population Domes Total Body Dose 0 man-rem Maximum Organ Dose (organ) 0 man-rem (organ)
Population doses can be campared to the natural background dosefor the entire 30-male population of about 36,430 man-rem / year (based on 90 miem'yrfor natural background).
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R-diol:gicalImp:ct Assessment i Br:wns F4rry Nucle:r Plant January - December 1998 Table 6.
Doses from Liquid Effluents Second Quarter
- Individual Doses (mrem)
Age Group Organ Dose Pathway Dose Quarterly Percent of Limit Limit Total Body Fish Ingestion 0 Recreation 0 Water Ingestion 0 Total 0 1.5 mrem 0%
Liver Fish Ingestion 0 Recreation 0 Water Ingestion 0 Total 0 5 mrem 0%
Thyroid Fish Ingestion 0 Recreation 0 Water Ingestion 0 Total 0 S mrem 0%
- No releases were made this quarter.
Average Riverflow past BFN (cubic feet per second): 67163 Population Doses Total Body Dose 0 man-rem i
Maximum Organ Dose (organ) 0 man-rem (organ)
Population doses can be compared to the natural background dosefor the entire 50-mile population of about 56,430 man-rem / year (based on 90 mrem)rfor natural background).
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Radiol gicalImpact Assessment Br wns Fcrry Nucle:r Plant January - December 1998 Table 7 Doses from Liquid Effluents i I
Third Quarter
- Individual Doses (mrem)
Age Group Organ Dose Pathway Dose Quarterly Percent of Limit Limit Total Body Fish Ingestion 0 Recreation 0 Water Ingestion 0 Total 0 1.5 mrem 0%
Liver Fish Ingestion 0 Recreation 0 Water Ingestion 0 Total 0 5 mrem 0%
Thyroid Fish Ingestion 0 Recreation 0 Water Ingestion 0 Total 0 5 mrem 0% 1
- No releases were made this quarter.
l Average Riverflow past BFN (cubic feet per second): 29797 Ponulation Doses Total Body Dose 0 man-rem Maximum Organ Dose (organ) O man-rem (organ)
Population doses can be compared to the natural background dosefor the entire 50-mile population of about $6,430 man-rem / year (based on 90 mremlyrfor natural background).
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Radiol:gicalImp:ct Assessment Brcwns Ftrry Nucle:r Plant January - December 1998 l
Table 8 Doses from Liquid Effluents Fourth Quarter
- Individual Doses (mrem) ,
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Age Group Organ Dose Pathway Dose Quarterly Percent of Limit Limit Infant Total Body Fish Ingestion 0 Recreation 6.5E-11 Water Ingestion 8.3E-10 Total 9.5E-10 1.5 mrem 6.3E-08%
Infant Kidney Fish Ingestion 0 Recreation 6.5E-11 Water Ingestio.t 6.5E-09 Total 6.6E-09 5 mrem 1.3 E-07%
Child Thyroid Fish Ingestion 6.2E-13 Recreation 6.5E-11 Water Ingestion 4.0E 11 Total 1.1 E-10 5 mrem 2.2E-09%
- No planned releases were made during this quarter. One abnormal release occurred during this i quarter, l Average Riverflow past BFN (cubic feet per second): 27111 Ponulation Doses Total Body Dose 5.lE-09 man-rem Maximum Organ Dose (organ) 4.4E-08 man-rem (kidney)
Population doses can be compared to the natural background dosefor the entire 50-mile population of about 56330 man-rem! year (based on 90 mrem!)rfor natural background).
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fL l R:.di:1:gicalImp:ct Assessment l Br:wns Frrry N:clea Plant January - December 1998 l
Table 9 1
Total Dose from Fuel Cycle l
. First Second Third Fourth Dose Quarter Quarter Quarter Quarter Total Body or any Organ (except thyroid)
Total body air submersion 1.2E-03 1.6E-03 4.7E-04 7.8E-04 Critical organ dose (air) 2.3E-02 2.5E-02 8.3 E-03 1.3E-02 i Total body dose (liquid) 0 0 0 9.5E-10 I Maximum organ dose (liquid) 0 0 0 6.6E-09 Direct Radiation Dose 0 0 0 0 Total 2.4 E-02 2.7E-02 8.8E-03 1.4E-02 Cumulative Total Dose 7.4 E-02 l (Tott.1 body or any other organ) mrem 2.5E+01 AnnualDose Limit (mrem)
<1% I Percent of Limit Thyroid Dose (mrem)
Total body air submersion 1.2E-03 1.6E-03 4.7E-04 7.8E-04 Thyroid dose (airborne) 1.3E-01 1.3E-01 2.6E-02 1.2E-02 Total body dose (liquid) 0 0 0 9.5E-10 Thyroid dose (liquid) 0 0 -0 1.lE-10 Direct Radiation Dose 0 0 0 0 Total 1.3E-01 1.3 E-01 2.6E-02 1.3E-02 Cumulative Total Dose 3.0E-01 (Thyroid) mrem 7.5 E+01 AnnualDose Limit (mrem)
<1%
Percent of Limit l
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ENCLOSURE 2
-TENNES:3EE VALLEY AUTHORITY BROWNS FERRY NUCLEAR PLANT (BFN) J UNITS 1, 2, AND 3 METEOROLOGICAL DATA TABLES 1998 i
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i See Attached:
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RadiologicalImpact Assessment Brzwas F.rry N: clear Plant j January- December 1998 Table 10 i
Joint Frequency Distribution in Percent for Ground Level Releases First Quarter i
1 E2-2
l JOINT PERCENTAGE FREQUENCIES OF WI N SPEED BY WI S DIRECTION FOR i
l STASILITY CLASS A (DELTA T o 1.9 C/100 M)
Browns Ferry sucteer Plant j JAN 1, 96 - MAR 31, 98 I
WIND WIM SPEED (MPH)
DIRECTION CALM 0.6 1.4 1.5 3.4 3.5 5.4 5.5 7.4 7.5-12.4 '12.5 18.4 18.5 24.4 >=24.5 TOTAL j N 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NNE 0.000 0.000 0.000 0.000 0.047 0.047 0.000 0.000 0.000 0.095 C 0.000 0.000 0.000 0.000 0.095 0.142 0.000 0.000 0.000 0.237 ENE 0.000 0.000' 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 .0.000 0.000 0.000. I ESE 0.000 0.000 0.000 0.047 0.142 0.095 0.000 0.000 0.000 0.285 SE 0.000 0.000 0.000 0.237 0.190 0.095 0.000 0.000 0.000 0.522 SSE 0.000 0.000 0.000 0.806 0.000 0.000 0.000 0.000 8.000 0.806 S- 0.000 0.000 0.095 0.427 0.000 0.000 0.000 0.000 0.000 0.522 SSW 0.000 0.000 0.000 0.190 0.095 0.000 0.000 0.000 0.000 0.285 SW 0.000 0.000 0.000 0.190 0.000 0.047 0.000 0.000 0.000 0.237 WsW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W 0.000 0.000 0.000 0.000 0.000 0.047 0.000 0.000 0.000 0.047 WNW 0.000 0.000 0.000 0.000 0.000 0.047 0.000 0.000 0.000 0.047 NW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NNW 0.000 0.000 0.000 0.000 0.000 0.047 0.000 0.000 0.000 0.047 SUBTOTAL 0.000 0.000 0.095 1.898 0.560 0.569 0.000 0.000 0.000 3.131 TOTAL HOURS OF VALID STABILITY OBSERVATIONS '2118 TOTAL NOURS OF STABILITY CLASS A 66 TOTAL HOURS OF VALID WI S DIRECTION WIND SPEED STABILITY CLAS$ A 66
]
TOTAL NOURS OF VALIO WI S DIRECTION-WIW SPEED STABILITY OBSERVATIONS 2108 ;
TOTAL HOURS CALM 0 I METEOROLOGICAL FACILITY: Browns Ferry Nucteer Plant i
STASILITY BASED ON DELTA T BETWEEN 10.03 AND 45.30 E TERS WIS SPEED AND DIRECTION MEASURED AT 10.42 METER LEVEL DATE PRINTED: 24-Apr 98 NEAN WIN SPEED = 5.42 NOTE: TOTALS A S SUBTOTALS ARE OBTAINED FROM UNROUNDED NUNSERS E2-3 ;
)
I JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR 1
STABILITY CLASS B ( 1.9< DELTA Tc= 1.7 C/100 M)
Browns Ferry Nuclear Plant JAN 1, 96 - MAR 31, 98 l
WIS - WIW SPEED (MPN) l DIRECTION CALM 0.6 1.4 1.5 3.4 3.5 5.4 5.5 7.4 7.5 12.4 12.5-18.4 18.5 24.4 >=24.5 TOTAL M 0.000 0.000 0.047 0.047 0.000 0.047 0.000 0.000 0.000 0.142 NME 0.000 ' O.000 0.000 0.000 0.095 0.047 0.000 0.000 0.000 0.142 NE 0.000 0.000 0.000 0.047 0.095 0.047 0.000 0.000 0.000 0.190 i ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.047 0.095 0.047 0.000 0.000 0.000 0.190 l ESE 0.000 0.000 0.000 0.047 0.000 0.095 0.000 0.000 0.000 0.142 SE 0.000 0.000 0.000 0.237 0.095 0.047 0.000 0.000 0.000 0.380 SSE 0.000 0.000 0.000 0.142 0.000 0.000 0.000 0.000 0.000 0.142 S 0.000 0.000 0.047 0.047 0.000 0.000 0.000 0.000 0.000 0.095 I SSW 0.000 0.000 0.000 0.095 0.000 0.000 0.000 0.000 0.000 0.095 l SW 0.000 0.000 0.095 0.000 0.000 0.000 0.000 0.000 0.000 0.095 I WSW 0.000 0.000 0.000 0.047 0.047 0.047 0.000 0.000 0.000 0.142 l W 0.000 0.000 0.000 0.000 0.000 0.142 0.000 0.000 0.000 0.142 WWW 0.000 0.000 0.000 0.000 0.000 0.237 0.047 0.000 0.000 0.285 NW 0.000 0.000 0.000 0.000 0.000 0.190 0.047 0.000 0.000 0.237 NNW 0.000 0.000 0.000 0.047 0.000 0.190 0.095 0.000 0.000 0.332 SUBT0TAL 0.000 0.000 0.190 0.806 0.427 1.139 0.190 0.000 0.000 2.751 l
l TOTAL NOURS OF VALID STABILITY CSSERVATIONS , 2118 VOTAL NOURS OF STABILITY CLASS B 58 TOTAL NOUR$ OF VALID WI W DIRECTION WI W SPEED STABILITY CLASS e 58 TOTAL NOURS OF VALID WI N DIRECTION WI S SPEED STABILITY OBSERVATIONS 2108 TOTAL NOUR$ CALM 0 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA T BETWEEN 10.03 AND 45.30 METERS WIN SPEED AND DIRECTION MEASURED AT 10.42 METER LEVEL DATE PRINTED: 24-Apr-98 MEAN WIN SPEED = 7.66 NOTE: TOTALS AND SUBTOTALS ARE OSTAINED FROM UNROUNDED MUMBERS E2-4
1 l
JOINT PERCENTAGE FREQUENCIES OF WIND SPEED SV WIND DIRECTION FOR STAstLITY CLASS C (-1.7< DELTA Tc= 1.5 C/100 m) l Browns Ferry Nuclear Plant l
l l
JAN 1, 96 - MAR 31, 98 WIW WIND SPEED (NPN)
DIRECTION CALM 0.61.4' 1.5 3.4 3.5 5.4 5.57.4 7.5 12.4 12.5 18.4 18.5 24.4 n24.5 TOTAL N 0.000 0.000 0.000 0.000 - 0.047 0.000 0.000 0.000 0.000 0.047 NME 0.000 0.000 0.000 0.095 0.047 0.142 0.000 0.000 0.000 0.285 l .C 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ENE 0.000 0.000 0.047 0.000 0.095 0.095 0.000 0.000 0.000 0.237 E 0.000 0.000 0.000 0.000 0.000 0.047 0.000 0.000 0.000 0.047 ESE 0.000 0.000 0.000 0.190 0.000 0.000 0.000 0.000 0.000 0.190 SE 0.000 0.000 0.142 0.190 0.000 0.000 0.000 0.000 0.000 0.332 SSE 0.000 0.000 0.000 0.047 0.000 0.000 0.000 0.000 0.000 0.047 8 0.000 0.000 0.047 0.000 0.000 0.000 0.000 0.000 0.000 0.047 SSW 0.000 0.000 0.000 0.095 0.000 0.000 0.000 0.000 0.000 0.095 SW 0.000 0.000 0.000 0.047 0.000 0.000 0.000 0.000 0.000 0.047 WSW 0.000 0.000 0.000 0.047 0.095 0.047 0.000 0.000 0.000 0.190 W 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.047 0.047 0.332 0.000 I WNW 0.000 0.000 0.427 l
NW 0.000 0.000 0.000 0.000- 0.000 0.332 0.190 0.000 0.000 0.522 l NNW 0.000 0.000 0.000 0.000 0.000 0.095 0.095 0.000 0.000 0.190 l
l SUBTOTAL 0.000 0.000 0.237 0.759 0.332 1.091 0.285 0.000 0.000 2.704 1
TOTAL NOURS OF VALID STASILITY OGSERVATIONS 2118 TOTAL NOURS OF STABILITY CLASS C 57 TOTAL NOURS OF VAll0 WI S DIRECTION WIS SPEED STABILITY CLASS C 57 l_
l TOTAL NOURS OF VAllD Wl W DIRECTION WI N SPEED STABILITY OBSERVATIONS 2108 l TOTAL NOURS CALM 0 l
l l
l METEOROLOGICAL FACILITY: Brouns Ferry i.ucteer Plant STABILITY BASED ON DELTA T BETWEEN 10.03 A W 45.30 METERS l WI S SPEED AND DIRECTION MEASURED AT 10.42 METER LEVEL DATE PRINTED: 24 Apr 96 MEAN WIND SPEED = 7.82 l
NOTE: TOTALS A S SUBTOTALS ARE 05fAINED FROM UNROUNDED WUMBERS i
1 l E2-5 a
C l'
l i.
I J0!NT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR
. STABILITY CLASS D (-1.5< DELTA T<= 0.5 C/100 N)
Browns Ferry Nuclear Plant
! JAN 1, 98 - MAR 31, 98 t
. WIS ' WIN SPEED (NPN) j DIRECTION CALM 0.6 1.4 1.5 3.4 3.5 5.4 5.5-7.4 7.5 12.4 12.5 18.4 18.5 24.4 >=24.5 TOTAL N 0.000 0.000 0.142 0.949 1.376 0.901 0.759 0.332 0.000 4.459 NME 0.000 0.000 0.237 0.854 0.617 0.901 0.047 0.000 0.000 2.657 M 0.000 0.000 0.047 0.474 0.617 0.901 0.047 0.000 0.000 2.087 1 EK 0.000 0.047 0.332 0.617 0.474 0.190 0.000 0.000 0.000 1.660 l E 0.000 0.047 0.23 7 - 0.854 0.332 0.427 0.047 0.000 0.000 1.945 ESE 0.000 0.047 0.285 1.423 1.044 0.712 0.142 0.000 0.000 3.653 SE 0.000 0.047 0.332 1.376 0.901 0.806 0.047 0.000 0.000 3.510 80 0.000 0.047 0.712 0.901 0.095 0.047 0.000 0.000 0.000 1.803 I' S 0.000 0.000 0.332 0.380 0.190 0.332 0.000 0.000 0.000 1.233 SSW 0.000 0.000 0.380 0.237 0.237 0.095 0.000 0.000 0.000 0.949
- SW 0.000 0.000 0.237 0.047 0.142 0.285 0.000 0.000 0.000 0.712 WSW 0.000 0.000 0.285 0.190 0.522 1.755 0.047 0.000 0.000 2.799 W 0.000 0.047 0.237 0.380 0.901 1.708 0.142 0.000 0.000 3.416 WNW 0.000 0.047 0.190 0.474 0.332 1.660 0.522 0.000 0.000 3.226 l 'W 0.000 0.000 .0.095 0.332 0.949 2.704 1.328 0.041 0.000 5.455 NNW 0.000 0.000 0.190 0.806 1.328 2.135 0.806 0.047 0.000 5.313 SUNTOTAL D 000 0.332 4.269 10.294 10.057 15.560 3.937 0.427 0.000 44.877 TOTAL NOURS OF VALID STABILITY OstERVATIONS 2118 l TOTAL NOUR$ OF STAS!LITY CLASS D 948 l
TOTAL NOURS OF VALID WIN DIRECTION WIN SPEED STABILITY CLASS D 946 /
TOTAL NOURS OF VALID Wim DIRECTIOM WIm SPEED STABILITY OSSERVATIONS 2108 TOTAL NOURS CALM 0 1
! C] TEOR 0 LOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA T BETWEEN 10.03 AND 45.30 NETERS WIS SPEED AND DIRECTION EASURED AT 10.42 HETER LEVEL DATE PRINTED: 24-Apr 98 MAN WIN SPEED = 7.54
'l NOTE: TOTALS AND SUBTOTALS ARE OSTAIMD FRON UNROUNDED NUMBERS I
E2-6
Q' p -
ff k JOINT PERCENTAGE FREQUENCIES OF WIW SPEED BY WIND DIRECTION FOR STA81LITY CLASS E ^ ( 0.5< DELTA T4= 1.5 C/100 M)
Brooms Ferry Nuclear Plant
.JAN 1, 98 - MAR 31, 98 WIN Wie SPEED (MPN)
-DIRECT 10W CALM. 0.6-1.4 1.5 3.4 3.5 5.4 5.57.4 7.5 12.4 12.5 18.4 18.5 24.4 >=24.5 TOTAL W 0.000 0.047 0.474 0.474 0.095 0.047 0.000 0.000 0.000 1.139 IFIE 0.000 0.000 0.332 0.427 0.142 0.000 d.095 0.000 0.000 0.996 M 0.000 0.142 0.285 0.806 0.047- 0.237 0.190 - 0.000 0.000 1.708 ENE '. 0.000 0.047 0.380 0.522 0.000 0.047 0.000 0.000 0.000 0.9,6 E 0.000 0.047 1.091 0.617 0.380 0.000 0.000 0.000 0.000 2.135 ESE 0.000 ' O.095 1.328 1.945 0.237 0.237 0.000 0.000 0.000 3.843 SE - 0.000 0.142 1.328 1.565 0.664 0.237 0.000 0.000 0.000 3.937 SSE .0.000 0.190 0.949 0.901 0.237 0.047 0.000 0.000 0.000 2.324
'S 0.000 0.190 0.759 0.759 0.806 0.901 0.000 0.000 0.000 3.416 SSW 0.000 0.190' O.285 0.095 0.047 0.047 0.000 0.000 0.000 0.664 SW 0.000 . 0.142 0.522 0.047 0.047 . 0.047 0.000 0.000 0.000 0.806 WSW 0.000 0.047 ' 0.332 0.095 0.095 0.047 0.047 0.000 0.000 0.664 W 0.000 - 0.000 0.474 0.205 0.047 0.000 0.047 0.000 0.000 0.854 WNW 0.000 ' O.095 0.190 0.190 0.095 0.000 0.000 0.000' O.000 0.569
.W' O.000 0.047 0.285. .0.280 0.380 0.427 0.000 0.000 0.000 1.423 INRd 0.000- 0.000 .0.569 0.759 0.332 0.190 0.000 0.000 0.000 1.850 t SUBY0TAL 0.000 1.423 9.583 9.772 3.653 2.514 0.380 0.000 0.000 27.324 TOTAL HOURS OF VALIO STABILITY OBSERVATIONS 2118 TOTAL NOURS OF STABILITY CLASS E 578 TOTAL NOURS OF VALIO Wim DIRECT 10N-Wim SPEG STABILITY CLASS E 576 TOTAL HOURS OF VALIO WIN DIRECTION WIN SPEED STABILITY OBSERVATIONS 2108
-TOTAL IIOURS CALM 0 i
IEETEOR0 LOGICAL FACILITT Brooms Ferry leuclear Plant STABILITY OASED CII DELTA T BETWEN 10.03 Ale 45.30 M TERS
.Wim SPEG AS DIRECTION MEASURED AT 10.42 MTER LEVEL DATE PRINTED: 24 Apr 98 IEAll Wim SPEED e 4.40.
IIOTE: TOTALS AS SUBTOTALS' ARE OBTAINED FRGI LAIRCUSED IIUMBERS E21
r l
JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS F ( 1.5< DELTA Tc= 4.0 C/100 M)
- Browns Ferry Nucteer Plant JAN 1, 98 MAR 31, 98 WlW WIND SPEED (MPN)
DIRECTION CALM 0.6 1.4 1.5 3.4 3.5 5.4 5.5 7.4 7.5 12.4 12.5 18.4 18.5 24.4 >=24.5 TOTAL M 0.007 0.047 0.474 0.190 0.047 0.000 0.000 0.000 0.000 0.766 NNE 0.004 0.095 0.237 0.095 0.142 0,000 0.000 0.000 0.000 0.574 NE 0.006 0.047 0.380 0.047 0.000 0.000 0.000 0.000 0.000 0.480 ENE 0.004 0.000 0.332 0.190 0.000 0.000 0.000 0.000 0.000 0.526 E 0.006 0.000 0.427 0.569 0.000 0.000 0.000 0.000 0.000 1.002 ESE 0.008 0.000 0.569 0.190 0.000 0.000 0.000 0.000 0.000 0.767 SE 0.015 0.142 0.949 0.712 0.190 0.047 0.000 0.000 0.000 2.054 SSE 0.020 0.332 1.186 0.522 0.285 0.047 0.000 0.000 0.000 2.392 S 0.004 0.095 0.237 0.664 0.474 0.237 0.000 0.000 0.000 1.712
$$W 0.004 0.190 0.095 0.000 0.000 0.000 0.000 0.000 0.000 0.288 SW 0.001 0.047 0.047 0.000 0.000 0.000 0.000 0.000 0.000 0.096 WSW 0.003 0.047 0.142 0.000 0.047 0.000 0.000 0.000 0.000 0.240 W 0.001 0.047 0.047 0.000 0.000 0.000 0.000 0.000 0.000 0.096 WNW 0.004 0.047 0.237 0.047 0.000 0.000 0.000 0.000 0.000 0.336 W 0.001 0.000 0.095 0.047 0.000 0.000 0.000 0.000 0.000 0.144 NW 0.006 0.000 0.474 0.332 0.142 0.000 0.000 0.000 0.000 0.955
$UBTOTAL 0.095 1.139 5.930 3.605 1.328 0.332 0.000 0.000 0.000 12.429 TOTAL NOURS Of VALIO STABILITY otSERVATIONS 2118 T3TAL NOURS OF STABILITY CLASS F 265 TOTAL NOURS OF VALID WI N DIRECTION Wi m SPEED STABILITY CLASS F 262 TOTAL NOURS OF VALID WIW DIRECTION WIN SPEED STABILITY JSERVATIONS 2108 TOTAL NOURS CAtJE 2 i
METEOROLOGICAL FACILITY: Browns Ferry Nucteer Plant STABILITY BASED ON DELTA T BETWEEN 10.03 AND 45.30 METERS WIN SPEED AND DIRECTION MEASURED AT 10.42 METER LEVEL DATE PRINTED: 24 Apr 98 MEAN WIN SPEED = 3.42 NOTE: TOTALS AS SUBTOTALS ARE osTAINED FROM UNROUNDED NUMBERS E2-8
JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS G (DELTA T > 4.0 C/100 M)
Browns Ferry Nuclear Plant JAN 1, 96 - MAR 31, 96 )
1 WIM WIND SPEiD(MPH)
DIRECTION CALM 0.6 1.4 1.5 3.4 3.5 5.4 5.57.4 7.5 12.4 12.5 18.4 18.5 24.4 n24.5 TOTAL M 0.000 0.142 0.285 0.237 0.000 0.000 0.000 0.000 0.000 0.664 NME 0.000 0.047 0.047 0.142 0.047 0.000 0.000 0.000 0.000 0.285 NE 0.000 0.047 0.190 0.000 0. a 'O 0.000 0.000 0.000 0.000 0.237 ENE 0.000 0.000 0.047 0.047 0.095 0.000 0.000 0.000 0.000 0.190 E 0.000 0.000 0.047 0.000 0.000 0.000 0.000 0.000 0.000 0.047 1 ESE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 I SE 0.000 0.000 0.427 0.285 0.047 0.000 0.000 0.000 0.000 0.759 I
$$E 0.000 0.237 1.471 0.759 0.047 0.000 0.000 0.000 0.000 2.514 S 0.000 0.000 0.569 0.569 0.190 0.095 0.000 0.000 0.000 1.423 l
$$W 0.000 0.047 0.047 0.000 0.000 0.000 0.000 0.000 0.000 0.095 SW 0.000 0.047 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.047 WSW 0.000 0.000 0.047 0.000 0.000 0.000 0.000 0.000 0.000 0.047 W 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WWW 0.000 0.190 0.047 0.000 0.000 0.000 0.000 0.000 0.000 0.237 MW 0.000 0.047 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.047 NNW 0.000 0.095 0.095 0.000 0.000 0.000 0.000 0.000 0.000 0.190 SUBTOTAL 0.000 0.901 . 3.321 2.040 0.427 0.095 0.000 0.000 0.000 6.784 TM AL HOURS OF VALID STABILITY OBSERVATIONS , 2118 TOTAL HOURS OF STA51LITY CLASS G 146 TOTAL NOURS OF VALID WIN DIRECTION-WI N SPEED STABILITY CLASS G 143 TOTAL HOURS Of VALID WIS DIRECTION-Wl m SPEED-STABILITY OSSERVAT!aNS 2106 TOTAL WOURS CALM 0 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WI W SPEED A W DIRECTION MEASURED AT 10.42 METER LEVEL DATE PRINTED: 24 Apr-98 j, MEAN WIW SPEED a 3.11 NOTE: TOTALS AND SUBTOTALS ARE OSTAINED FROM UNROUNDED NUMBERS E2-9
f' i l
Radiol gicalImpact Assesneent Cr:wns Fctry Nrclear Plant January- December 1998 Table 11 Joint Frequency Distribution in Percent l . for Ground LevelReleases !
l Second Quarter i
I l
i l
1 1
l l
E2-10 l
r~ 1
' i l
l I
J0lNT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR I 1
l I
STABILITY CLASS A (DELTA Tc= 1.9 C/100 M)
Browns Ferry Nuclear Plant APR 1, 1998 JL'N 30, 1998 WIND WIND SPEE0(MPH)
DIRECT!DN CALM 0.6 1.4 -1.5 3.4 3.5-5.4 5.5 7.4 7.5 12.4 12.5 18.4 18.5-24.4 >=24.5 TOTAL N 0.000 0.000- 0.000 0.000 0.000 0.139 0.000 0.000 0.000 0.139 I NNE 0.000 0.000 0.000 0.000 0.092 0.139 0.000 0.000 0.000 0.231 NE 0.000' O.000 0.000 0.000 0.000 0.185 0.000 0.000 0.000 0.185
' EWE 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.046 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ;
ESE 0.000 0.000 0.000 0.139 0.092 0.000 0.000 0.000 0.000 0.231 l SE 0.000 0.000 0.277 0.370 0.000 0.000 0.000 0.000 0.000 0.647 SSE 0.000 0.000 0.416 0.324 0.000 0.000 0.000 0.000 0.000 0.740 S 0.000 0.000 0.3 70 0.416 0.046 0.092 0.000- 0.000 0.000 0.9 25
- SSW 0.000 0.000 0.370 0.832 0.000 0.000 0.000 0.000 0.000 1.202 SW ' O.000 0.000 0.139 0.462 0.046 0.000 0.000 0.000 0.000 0.647 WSW' O.000 0.000 0.046 0.601 0.832 0.277 0.046 0.000 0.000 1.803 W 0.000 0.000 0.000 0.092 0.462 0.092 0.000 0.000 0.000 0.647 )
WWW 0.000 0.000 0.000 0.046 0.000 0.092 0.000 0.000 0.000 0.139 i NW ._ 0.000 ' O.000 0.000 0.000 0.000 0.277 0.092 0.000 0.000 C.370 NNW 0.000 0.000 0.000 0.000 0.000 0.139 0.000 0.000 0.000 0.139 i SUBT07AL 0.000 0.000 1.618 3.329 1.5 72 1.433 0.139 0.000 0.000 8.091
- TOTAL .1$0VR$ OF VAllD STABILITY OSSERVATIONS 2173 TOTAL HOURS OF STABILITY CLASS A 175 TOTAL HOURS OF VALID WIND DIRECT!DN WIND SPEED STABILITY CLASS A 1 75 TOTAL HOURS OF VALID WIND DIRECTION WIND SPEED STABILITY OSSERVAfl0NS 2163 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA T BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION P'EASURED AT 10.42 METER LEVEL DATE PRINTED: 19980720 MEAN WIND SPEED = 5.45
. NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-11
I 1
I l
l JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STASILITY CLASS B ( 1.9< DELTA Tc= 1.7 C/100 M)
Browns Ferry Nuclear Plant APR 1, 1998 - JUN 30, 1998 WINO WIND SPEED (MPH)
DIRECTION CALM 0.6 1.4 1.5-3.4 3.5 5.4 5.5-7.4 7.5 12.4 12.5-18.4 18.5-24.4 >=24.5 TOTAL N 0.000 0.000 0.000 0.000 0.231 0.092 0.000 0.000 0.000 0.324 NME 0.000 0.000 0.000 0.046 0.139 0.046 0.000 0.000 0.000 0.231 l NE 0.000 0.000 0.000 0.000 0.000 0.139 0.000 0.000 0.000 0.139 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.046 0.046 0.046 0.000 0.000 0.000 0.000 0.139 !
SE 0.000 0.000 0.185 0.231 0.000 0.000 0.000 0.000 0.000 0.416 -
SSE 0.000 0.000 0.231 0.092 0.000 0.000 0.000 0.000 0.000 0.324 .
S 0.000 0.000 0.277 0.231 0.000 0.000 0.000 0.000 0.000 0.509 ,
SSW 0.000 0.000 0.092 0.185 0.000 0.000 0.000 0.000 0.000 0.277 l SW 0.000 0.000 0.046 0.462 0.046 0.000 0.000 0.000 0.000 0.555 WSW 0.000 0.000 0.046 0.647 0.324 0.185 0.046 0.000 0.000 1.248 W 0.000 0.000 0.000 0.324 0.277 0.231 0.046 0.000 0.000 0.878 WNW 0.000 0.000 0.000 0.092 0.185 0.277 0.185 0.000 0.000 0.740 NW 0.000 0.000 0.000 0.046 0.185 0.185 0.139 0.000 0.000 0.555 NNW 0.000 0.000 0.000 0.000 0.139 0.185 0.092 0.000 0.000 0.416
$UBTOTAL 0.000 0.000 0.925 2.404 1.5 72 1.341 0.509 0.000 0.000 6.75 0 l
TOTAL HOURS OF VALID STABILITY 08SERVAfl0NS 2173 TOTAL HOURS OF STABILITY CLASS B 147 TOTAL HOURS OF VALID WINO DIRECTION WIND SPEED STABILITY CLASS B 146 TOTAL HOURS OF VALID WIND DIRECTION WIND SPEED-STABILITY OSSERVATIONS 2163 TOTAL HOURS CALM 0 1
I METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS i WINO GPEED AND DIRECTION MEASURED AT 10.42 METER LEVEL DATE PRINTED: 19980720 I MEAN WIND SPEED = 6.28 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E212 i !
t !
I l 1
JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR r
i STABILITY CLASS C ( 1.7< DELTA Tc= 1.5 C/100 M)
Browns Ferry Nuclear Plant APR 1, 1998 - JUN 30, 1998 WIND WIND SPEED (MPN)
I DIRECTION CALM 0.6-1.4 1.5 3.4 3.5 5.4 5.5 7.4 7.5 12.4 12.5 18.4 18.5 24.4 >=24.5 TOTAL i
N 0.000 0.000 0.000 0.000 0.092 0.139 0.000 0.000 0.000 0.231 NNE 0.000 0.000 0.046 0.139 0.092 0.000 0.000 0.000 0.000 0.277 NE 0.000 0.000 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.046 )
ENE 0.000 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.046 ]
E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 )
ESE 0.000 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.046 l SE 0.000 0.000 0.185 0.092 0.000 0.000 0.000 0.000 0.000 0.277 l SSE 0.000 0.000 0.462 0.139 0.000 0.000 0.000 0.000 0.000 0.601 S' O.000 0.000 0.231 0.092 0.046 0.000 0.000 0.000 0.000 0.370 SSW 0.000 0.000 0.277 0.139 0.000 0.000 0.000 0.000 0.000 0.416 SW 0.000 0.000 0.046 0.185 0.000 0.000 0.000 0.000 0.000 0.231 WSW 0.000 0.000 0.046 0.277 0.277 0.185 0.000 0.000 0.000 0.786 W 0.000 0.000 0.092 -0.462 0.231 0.185 0.000 0.000 0.000 0.971 l WNW 0.000 0.000 0.046 0.092 0.324 0.277 0.046 0.000 0.000 0.786 NW 0.000 0.000 0.000 0.370 0.231 0.231 0.324 0.000 0.000 1.156
.-NNW 0.000 0.000 0.000 0.046 0.046 0.185 0.046 0.R00 0.000 0.324
$UeTOTAL 0.000 0.000 1.433 2.034 1.433 1.248 0.416 0.000 0.000 6.565 TOTAL HOURS OF VAllD STABILITY OBSERVATIONS 2173 TOTAL HOURS OF STABILITY CLASS C 144 TOTAL HOURS OF VALID WIND DIRECTION WIND SPEED-STABILITY CLASS C 142 TOTAL HOURS OF VALID WIND DIRECTION WIND SPEED-STABILITY OBSERVATIONS 2163 ;
TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant
-STA41LITY BASED ON DELTA T BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT -10.42 METER LEVEL DATE PRINTED: 19980720 MEAN WIND SPEED = 6.07 NOTE: TOTALS AND SU5 TOTALS ARE OSTAINED FROM UNROUNDED NUMBERS I
I E2-13 L
~
J0lNT PERCENTAGE FREQUENCIES OF WINO SPEED BY WINO DIRECTION FOR 6TABILITY CLASS D ( 1.5< DELTA T<=-0.5 C/100 M)
Browns Ferry Nuclear Plant APA 1, 1998 - JUN 30, 1998 WIND WIND SPEE0(MPH)
DIRECT!DN CALM 0.6 1.4 1.5 3.4 3.5 5.4 5.5-7.4 7.5 12.4 12.5-18.4 18.5 24.4 >=24.5 TOTAL N 0.000 0.000 0.092 0.462 0.370 0.740 0.000 0.000 0.000 1.664 NNE 0.000 0.000 0.231 0.462 0.462 0.092 0.000 0.000 0.000 1.248 NE 0.000 0.000 0.046 0.647 0.092 0.277 0.000 0.000 0.000 1.063 ENE 0.000 0.000 0.046 0.139 0.092 0.000 0.000 0.000 0.000 0.2 77 E 0.000 0.000 0.092- 0.370 0.000 0.000 0.000 0.000 0.000 0.462 ESE 0.000 0.046 0.370 0.555 0.555 0.231 0.000 0.000 0.000 1. 75 7 SE 0.000 0.000 1.711 0.416 0.185 0.000 0.000 0.000 0.000 2.312 SSE 0.000 0.046 1.5 72 0.2 77 0.000 0.000 0.000 0.000 0.000 1.896 S 0.000 0.046 1.433 0.509 0.2 77 0.046 0.000 0.000 0.000 2.312 SSW 0.000 0.046 1.017 0.693 0.324 0.092 0.000 0.000 0.000 2.1 73 SW 0.000 0. 04 6 0.555 0.324 0.000 0.000 0.000 0.000 0.000 0.925 WSW 0.000 0.000 0.832 1.711 0.693 0.786 0.000 0.000 0.000 4.022 W 0.000 0.092 0.647 1.063 0.832 0.693 0.092 0.000 0.000 3.421 WNW 0.000 0.000 0.185 0.370 0.555 0.925 0.555 0.000 0.000 2.589 NW 0.000 0.000 0.185 0.555 0.832 1.248 0.693 0.000 0.000 3.514 NNW 0.000 0.000 0.092 0.601' O.277 0.509 0.324 0.000 0.000 1.803 1
SUBTOTAL 0.000 0.324 9.108 9.154 5.548 5.640 1.664 0.000 0.000 31.438 i TOTAL HOURS OF VALID STABILITY 00$ERVAtl0NS . 2173 TOTAL HOURS OF STABILITY CLASS 0 686 70TAL HOURS OF VALID WIND DIRECTION-WIND SPfED STABILITY CLASS D 680 TOTAL HOURS OF VALID WIND DIRECTION WIND SPEED STABILITY OBSERVATIONS 2163 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY 8ASED ON DELTA T BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECT!DN MEASURED AT 10.42 METER LEVEL DATE PRINTED: 19980720 MEAN WIND SPEED = 5.56 NOTE: TOTALS AND SUOTOTALS ARE OSTAINED FROM UNROUNDED NUM8ERS E2-14
T~ ,
I l
\ \
1 JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BV WIND DIRECTION FOR i
l STA51LITY CLASS E (-0.5< DELTA T<= 1.5 C/100 M)
Browns Ferry Nuclear Plant l
( APR 1, 1998 JUN 30, 1996 I
l WINO WIND SPEED (MPH)
DIRECTION CALM 0.6 1.4 1.5 3.4 3.5 5.4 5.5 7.4 7.5-12.4 12.5 18.4 18.5-24.4 >=24.5 TOTAL N 0.000 0.092 0.324 0.185 0.185 0.000 0.000 0.000 0.000 0.786 NNE .0.000 0.046 0.185 0.601 0.046 0.000 0.046 0.000 0.000 0.925 NE 0.000 0.277 0.277 0.185 0.231 0.000 0.000 0.000 0.000 0.971 ENE 0.000 0.046 0.231 0.092 0.277 0.000 0.000 0.000 0.000 0.647 E 0.000 0.370 0.601 0.462 0.092 0.000 0.000 0.000 0.000 1.526 ESE 0.000 0.416 1.572 0.462 0.324 0.000 0.000 0.000 0.000 2.774 SE 0.000 0.416 1.572 0.416 0.000 0.000 0.000 0.000 0.000 2.404 SSE 0.000 0.277 1.063 0.231 0.000 0.000 0.000 0.000 0.000 1.572 5 0.000 1.110 2.358 0.925 1.387 0.185 0.000 0.000 0.000 5.964 SSW 0.000 0.370 1.017 0.416 0.092 0.046 0.000 0.000 0.000 1.942 SW 0.000 0.139 0.740 0.000 0.000 0.092 0.000 0.000 0.000 0.971 WSW 0.000 0.092 1.372 0.231 0.185 0.185 0.000 0.000 0.000 2.265 W 0.000 0.185 1.017 0.693 0.046 0.046 0.046 0.000 0.000 2.034 WNW 0.000 0.092 0.416 0.370 0.324 0.092 0.000 0.000 0.000 1.294 NW 0.000 0.046 0.046 0.462 0.139 0.324 0.000 0.046 0.000 1.063 NNW 0.000 0.092 0.416 0.601 0.139 0.092 0.046 0.000 0.000 1.387 SUBTOTAL 0.000 4.068 13.407 6.334 3.467 1.063 0.139 0.046 0.000 28.525 TOTAL HOURS OF VAllD STASILITY OSSERVATIONS 2173 TOTAL HOURS OF STA81LITY CLASS E 618 VOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED STABILITY CLASS E 617 TOTAL HOUk$ OF VALID WIND DIRECTION WIND SPEED STABILITY 08 SERVAT 10NS 2163 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY:- Browns Ferry Nuclear Plant STABILITY BASED ON DELTA T BETWEEN 10.03 AND 45.30 METEM WIND SPEED AND DIRECTION MEASURED AT 10.42 METER LEVEL DATE PRINTED: 19980720 l MEAN WINO SPEED = 3.42 f
I I
NOTE: TOTALS AND SUOTOTALS ARE OSTAINED FROM UNROUNDED NUM8ERS E2-15
l l
h JolNT PERCENTAGE FREQUENCIES OF WIND SPEED BY WINO DIRECTION FOR STAstLITY CLASS F ( 1.5< DELTA Tc= 4.0 C/100 M)
Browns Ferry Nuclear Plant APR 1,1998 JUN 30,1998 WINO WIND SPEED (MPH)
DIRECTION CALM 0.6 1.4 1.5 3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5 18.4 18.5 24.4 > =24.5 - TOTAL N 0.003 0.092 0.509 0.231 0.000 0.000 0.000 0.000 0.000 0.835 NNE 0.003 0.524 0.324 0.139 0.000 0.000 0.000 0.000 0.000 0. 789 NE 0.003 0.231 0.324 0.000 0.000 0.000 0.000 0.000 0.000 0.557 ENE 0.003 0.231 0.324 0.139 0.000 0.000 0.000 0.000 0.000 0.696 E 0.006 0.416 0.786 0.370 0.000 0.000 0.000 0.000 0.000 1.578 ESE 0.006 0.509 0.832 0.000 0.000 0.000 0.000 0.000 0.000 1.347
' SE 0.004 0.324 0.462 0.000 0.000 0.000 0.000 0.000 0.000 0.790
$$E 0.005 0.416 0.647 0.046 0.000 0.000 0.000 0.000 0.000 1.115 S- 0.005 .0.277 0.786 0.231 0.000 0.000 0.000 0.000 0.000 1.299 SSW 0.004 0.185 0.601 0.000 0.000 0.000 0.000 0.000 0.000 0.790 SW 0.001 0.046 0.139 0.000 0.000 0.000 0.000 0.000 0.000 0.186 WSW 0.001 0.046 0.139 0.000 0.000 0.000 0.000 0.000 0.000 0.186
- W- 0.001 0.046 0.139 0.092 0.046 0.000 0.000 0.000 0.000 0.324 l WWW 0.000 0.000 0.092 0.000 0.000 0.000 0.000 0.000 0.000 0.093 I NW 0.001 0.185 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.232 NNW 0.002 0.231 0.185 0.139 0.000 0.000 0.000 0.000 0.000 0.557 SusT0TAL 0.046 3.560 6.334 1.387 0.046 0.000 0.000 0.000 0.000 11.373 I
TOTAL HOURS OF VALID STAtli. ~ OptERVATION$ 2173 j TOTAL HOURS OF STABILITY clash 246 l TOTAL HOURS OF Vf LID WIND DIRECTIOP. jib 6 iPEED STABILITY CLASS F 246 l TOTAL HOURS OF VALID WIND DIRECTION WIND SPEED STABILITY OBSERVATIONS 2163 l TOTAL HOURS CALM 1 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA T BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.42 METER LEVEL j DATE PRINTED: 19980720 MEAN WIND SPEED = 2.11 l
NOTE:" TOTALS AND SUOTOTALS ARE OBTAINED FROM UNROUNDED NUM9ERS E216
Q" l
l JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR l
STABILITY CLASS G (DELTA T > 4.'0 C/100 M)
Browns Ferry Nuclear Plant -
APR 1, 1998 - JUN 30, 1998 91ND WIND SPEED (MPH)
DIRECTION CALM 0.6-1.4 1.5-3.4 3.5 5.4 5.5 7.4 7.5 12.4 12.5-18.4 18.5 24.4 >=24.5 TOTAL i
N 0.052 0.555 0.878 0.092 0.046 0.000 0.000 0.000 0.000 1.624 NME .0.025 0.370 0.324 0.231 0.000 - 0.000 0.000 0.000 0.000 0.950 NE 0.022 0.416 0.185 0.000 0.000 0.000 0.000 0.000 0.000 0.623
' ENE 'O.023 0.231 0.416 0.092 0.000 0.000 0.000 0.000 0.000 0.763 E , 0.015 0.139 0.277 0.092 0.000 0.000 0.000 0.000 0.000 0.524
'ESE 0.003 0.092 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.096 SE 0.015 0.231 0.185 0.000 0.000 0.000 0.000 0.000 0.000 0.431 SSE 0.017 0.231 0.231 0.0W 0.000 0.000 0.000 0.000 0.000 0.479 S 0.012 -0.139 0.185 0.000 0.000 0.000 0.000 0.000 0.000 0.335 SSJ 0.003 0.092 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.096 SW 0.005 0.092 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.144
'WSW 0.000 - 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 1 l
W- 0.005 0.139 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.144 '
WNW 0.002 0.000 0.046 0.000 'O.000 0.000 0.000 0.000 0.000 0.048 )
NW 0.005 0.139 0.000 0.000 -0.00G 0.000 0.000 0.000 0.000 0.144 NNW' O.027 0.509 0.231 0.092 0.000 0.000 0.000 0.000 0.000 0.859 l
SU5 TOTAL 0.231 3.375- 3.005 0.601 0.046 0.000 0.000 0.000 0.000 7.258 l l
. TOTAL HOURS OF VAllo STABILITY OBSERVATIONS 2173 TOTAL HOURS OF STABILITY CLASS G' 157 j TOTAL HOURS OF VALID WIND DIRECTION WINO SPEED STASILITY CLASS G 157 TOTAL HOURS OF VALIO WIND DIRECTION WIND SPEED STA81LITT OBSERVATIONS 2163
. TOTAL HOURS CALM. 5 l
METEOROLOGICAL FACILITY: . Browns Ferry Nuclear Plant STABILITY BASED ON DELTA T BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.42 METER LEVEL -
DATE PRINTED: 19980720 MEAN WIND SPEED = 1.75 l NOTE: TOTALS AND SUBTOTALS ARE OSTAINED FROM UNROUNDED NUMBERS E217
RadiologicalImpact Assessment ,
L Browns FGrry Nuclect Plant '
January - December 1998 l
l- Table 12 i
! . Joint Frequency Distribution in Percent
! for Ground Level Releases Third Quarter l
1 i
i f
l E2-18
e JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS A (DELTA T<= 1.9 C/100 M)
Browns Ferry Nuclear Plant JUL 1. 1998 SEP 30, 1998 t11ND WIND SPEED (MPH)
DIRECTION CALM 0.6 1.4 1.5 3.4 3.5 5.4 5.5 7.4 7.5 12.4 12.5 18.4 18.5 24.4 ~24.5 TOTAL N 0.000 0.000 0.000 0.000 0.139 0.508 0.000 0.000 0.000 0.647 NNE 0.000 0.000 0.000 0.000 0.046 0.323 0.000 0.000 0.000 0.370 NE 0.000 0.000 0.000 0.000 0.000 0.277 0.000 0.000 0.000 0.277 j ENE' O.000 0.000 0.000 0.000 0.000 0.092 0.000 0.000 0.000 0.092 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000
)
l ESE 0.000 0.000 0.000 0.231 0.000 0.000 0.000 0.000 0.000 0.231 {
SE 0.000 0.000 0.092 0.924 0.046 0.000 0.000 0.000 0.000 1.063 l SSE 0.000 0.000 0.924 0.878 0.000 0.000 0.000 0.000 0.000 1.802 j S 0.000 0.000 0.832 0.647 0.000 0.000 0.000 0.000 0.(00 1.479 SSW 0.000 0.000 0.092 0.277 0.000 0.000 0.000 0.000 0.000 0.370 SW 0.000 0.000 0.000 0.277 0.000 0.000 0.000 0.000 0.000 0.277 WSW 0.000 0.000 0.046 0.231 0.046 0.000 0.000 0.000 0.000 0.323 W 0.000 0.000 0.000 0.000 0.046 0.092 0.000 0.000 0.000 0.139 WW 0.000 0.000 0.000 0.092 0.046 0.046 0.000 0.000 0.000 0.185 W 0.000 0.000 OJ00 0.000 0.046 0.277 0.000 0.000 0.000 0.323 NW 0.000 0.000 0.000 0.000 0.000 0.231 0.046 0.000 0.000 0.277
$U8 TOTAL 0.000 0.000 1.987 3.558 0.416 1.848 0.046 0.000 0.000 7.856 .
TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2164 TOTAL HOURS OF STA81LITY CLASS A 170 TOTAL HOURS OF VALID WIND DIRECTION WIND SPEED" STABILITY CLASS A 170 TOTAL HOURS OF VALIO WIND DIRECTION WIND SPEED. STABILITY OBSERVATIONS 2164 TOTAL HOURS CAIR 0 METEOROLOGICAL FAc!LITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA T BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.42 NETER LEVEL DATE PRINTED: 19981118 l MEAN WIND SPEED = 5.19 i NOTE: TOTALS AND SU5 TOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-19
E l
J0!NT PERCENTAGE FREQUENCIES OF WIND SPEED BY WINO DIRECTION FOR STABILITY CLASS B ( 1.9< DELTA T<= 1.7 C/100 M)
Browns Ferry Nuclear Plant JUL 1. 1998 SEP 30, 1998 WIND WIND SPEED (MPH)
DIRECTION CALM 0.6 1.4 1.5 3.4 3.5 5.4 5.5 7.4 7.5 12.4 12.5 18.4 18.5 24.4 >-24.5 TOTAL N 0.000 0.000 0.000 0.000 0.185 0.323 0.000 0.000 0.000 0.508 NME 0.000; 0.000 0.000 0.046 0.139 0.092 0.000 0.000 0.000 0.277 NE 0.000 0.000 0.000 0.046 0.046 0.092 0.000 0.000 0.000 0.185 ENE 0.000 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.046 E 0.000 0,000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.185 0.092 0.000 0.000 0.000 0.000 0.277 SE 0.000 0.000 0.416 0.139 0.000 0.000 0.000 0.000 0.000 0.555 SSE 0.000 0.000 0.555 0.092 0.000 0.000 0.000 0.000 0.000 0.647 5 0.000 0.000 0.462 0.000 0.000 0.000 0.000 0.000 0.000 0.462 SSW 0.000 0.000 0.231 0.139 0.000 0.000 0.000 0.000 0.000 0.370
- l. SW 0.000 0.000 0.231 0.231 0.000 0.000 0.000 0.000 0.000 0.462 WSW 0.000 0.000 0.000 0.462 0.092 0.000 0.000 0.000 0.000 0.555 W 0.000 0.000 0.046 0.231 0.139 0.000 0.000 0.000 0.000 0.416 WW 0.000 0.000 0.000 0.185 0.231 0.092 0.000 0.000 0.000 0.508 W~ 0.000 0.000 0.000 0.139 0.185 0.277 0.046 0.000 0.000 0.647 NNW 0.000 0.000 0.000 0.000 0.139 0.046 0.000 0.000 0.000 0.185
$U8 TOTAL 0.000 0.000 1.941 1.895 1.294 0.924 0.046 0.000 0.000 6.100 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2164 TOTAL HOURS OF STAdILITY CLASS 8 132 TOTAL HOURS OF VALID WIND DIRECTION WIND SPEED STABILITY CLASS 8 132 TOTAL HOURS OF VALID WIW OIRECTION WI W SPEED STABILITY OBSERVATIONS 2164 j TOTAL HOURS CALM 0 I
l !
METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant l
STABILITY BASED ON DELTA T BETWEEN 10.03 AND 45.30 METERS 1 WIND SPEED AND DIRECTION MEASURED AT 10.42 METER LEVEL l DATE PRINTED: 19981118 !
MEAN WIND SPEED = 5.15 I
NOTE: TOTALS AND SUBTUTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-20 t
1 l
l JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS C ( 1.7< DELTA T==.1.5 C/100 M)
Browns Ferry Nuclear Plant JUL 1. 1998 SEP 30. 1998 l
WIND- WIND SPEED (MPH)
DIRECTION CAut 0.6 1.4 1.5 3.4 3.5 5.4 5.5 7.4 7.5 12.4 12.5 18.4 18.5 24.4 ~24.5 TOTAL 1
N 0.000 0.000 0.000 0.046 0.231 0.370 0.000 0.000 0.000 0.647 NNE 0.000 0.000 0.000 0.139 0.231 0.000 0.000 0.000 0.000 0.370 NE 0.000 0.000 0.000 0.000 0.185 0.092 0.000 0.000 0.000 0.277 ENE 0.000 0.000 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.046 l E 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.046 ESE 0.000 0.000 0.092 0.139 0.046 0.000 0.000 0.000 0.000 0.277 l SE 0.000 0.000 0.693 0.139 0.000 0.000 0.000 0.000 0.000 0.832 SSE 0.000 0.000 0.693 0.092 0.000 0.000 0.000 0.000 0.000 0.786 l S 0.000 0.000 0.601 0.231 0.000 0.000 0.000 0.000 0.000 0.832 l SSW 0.000 0.000 0.323 0.046 0.000 0.000 0.000 0.000 0.000 0.370 SW 0,000 0.000 0.370 0.185 0.000 0.000 0.000 0.000 0.000 0.555 WSW 0.000 0.000 0.046 0.462 0.046 0.000 0.000 0.000 0.000 0.555 W 0.000 0.000 0.000 0.231 0.092 0.000 0.000 0.000 0.000 0.323 Wl8d 0.000 0.000 0.046 0.508 0.185 0.046 0.000 0.000 0.000 0.786 184 0.000 0.000 0.000 0.231 0.046 0.092 0.000 0.000 0.000 0.370 NI8l 0.000 0.000 0.000 0.046 0.185 0.139 0.000 0.000 0.000 0.370 SU8 TOTAL 0.000 0.000 2.865 2.542 1.248 0.786 0.000 0.000 0.000 7.440 i
TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2164 I TOTAL HOURS OF STABILITY CLASS C 161 TOTAL HOURS OF VALID WIND DIRECTION WIND SPEED STABILITY CLASS C 161 TOTAL HOURS OF VALID WIND DIRECTION. WIND SPEED STA81LITY OBSERVA.TIONS 2164 TOTAL HOURS Caul 0 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA.T BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.42 METER LEVEL DATE PRINTED: 19981118 MEAN WIND SPEED = 4.59 NOTE: TOTALS AND SUST0TALS ARE OSTAINED FROM UNROUNDED NUMBERS E2-21
JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS D ( 1.5< DELTA Tc= 0.5 C/100 M)
Browns Ferry Nuclear Plant JUL 1, 199(., SEP 30. 1998 l
l i
WIND WIND SPEED (MPH) l DIRECTION CALM 0.6 1.4 1.5 3.4 3.5 5.4 5.5 7.4 7.5 12.4 12.5 18.4 18.5 24.4 >-24.5 TOTAL N 0.000 0.046 0.508 1.109 0.508 0.185 0.000 0.000 0.000 2.357 NNE 0.000 0.000 0.370 0.462 0.370 0.092 0.000 0.000 0.000 1.294 NE 0.000 0.000 0.370 0.739 0.462 0.046 0.000 0.000 0.000 1.617 ENE 0.000 0.046 0.647 0.323 0.185 0.092 0.000 0.000 0.000 1.294 E 0.000 0.046 0.601 1.248 0.277 0.000 0.000 0.000 0.000 2.172 ESE 0.000 0.046 0.693 0.970 0.139 0.000 0.000 0.000 0.000 1.848 SE 0.000 0.000 1.017 0.231 0.046 0.000 0.000 0.000 0.000 1.294 SSE 0.000 0.000 1.386 0.185 0.000 0.000 0.000 0.000 0.000 1.571 5 0.000 0.231 1.802 0.139 0.000 0.000 0.000 0.000 0.000 2.172 SSW 0.000 0.092 1.155 0.092 0.000 0.000 0.000 0.000 0.000 1.340 SW 0.000 0.046 0.878 0.092 0.000 0.000 0.000 0.000 0.000 1.017 WSW 0.000 0.000 1.987 0.555 0.000 0.000 0.000 0.000 0.000 2.542 W 0.000 0.046 0.693 1.155 0.739 0.139 0.000 0.000 0.000 2.773 WW 0.003 0.000 0.139 0.416 0.462 0.185 0.000 0.000 0.000 1.201 W 0.000 0.046 0.416 0.647 0.555 0.185 0.000 0.000 0.000 1.848 NW 0.000 0.000 0.323 0.508 0.323 0.092 0.046 0.000 0.000 1.294 1
SU8 TOTAL 0.000 0.647 12.985 8.872. 4.067 1.017 0.046 0.000 0.000 27.634 !
1
)
TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2164 LTOTAL HOURS OF STABILITY CLASS O 598 TOTAL HOURS OF VALID WI N DIRECTION WIND SPEED. STABILITY CLASS D 598 I TOTAL HOURS OF VALID WIND DIRECTION.WI M $ PEED STABILITY OBSERVATIONS 2164 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA T SE1VEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTIOJ MEASURED AT 10.42 METER LEVEL DATE PRINTED: 19981118 MEAN WIND SPEED = 3.88 NOTE: TOTALS AND SU8 TOTALS ARE OSTAINED FROM UNROUNDED NUM8ERS E2-22
7 3 t
JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS E (.0.5< DELTA T== 1.5 C/100 M)
Browns Ferry Nuclear Plant JUL 1. 1998 SEP 30, 1998 WIND WIND SPEED (MPH)
DIRECTION ' CALM 0.6 1.4 1.5 3.4 3.5 5.4 5.5 7.4 7.5 12.4 12.5 18.4 18.5 24.4 >=24.5 TOTAL N 0.000 0.139 1.617 0.786 0.139 0.046 0.000 0.000 0.000 2.726 NNE 0.000 0.139 1.017 0.878 0.416 0.000 0.000 0.000 0.000 2.449 NE 0.000 - 0.508 0.832 0.416 0.370 0.231 0.000 0.000' O.000 2.357 ENE 0.000 0.231 1.155 0.601 0.000 0.000 0.000 0.000 0.000 1.987 E 0.000 0.185 1.756 1.848 0.139 0.000 0.000 0.000 0.000 3.928
-ESE 0.000 0.000 ' O.970 0.323 0.139 0.000 0.000 0.000 0.000 1.433 SE 0.000 0.323 1.155 0.139 0.000 0.000 0.000 0.000 0.000 1.617
$$E 0.000 0.462 0.786 0.046 0.000 0.000 0.000 0.000 0.000 1.294 S 0.000 0.370 0.508 0.000 0.000 0.000 0.000 0.000 0.000 0.878 SSW 0.000 0.185 0.555 0.000 0.000 0.000 0.000 0.000 0.000 0.739 SW 0.000 0.231 0.277 0.000 0.000 0.000 0.000 0.000 0.000 0.508 WSW 0.000 0.046 0.647 0.185 0.000 0.000 0.000 0.000 0.000 0.878 W 0.000 0.046 0.508 0.462 0.092 0.000 0.000 0.000 0.000 1.109 WW 0.000 0.046 0.139 0.046 0.000 0.046 0.000 0.000 0.000 0.277 W 0.000 0.139 0.231 0.046 0.000 0.000 0.000 0.000 0.000 0.416 NW 0.000 0.185 1.248 0.323 0.000 0.000 0.000 0.000 0.000 1.756
$U8 TOTAL 0.000 3.235 13.401 6.100 1.294 0.323 0.000 0.000 0.000 24.353 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2164 TOTAL H0URS OF STABILITY CLASS E 527 TOTAL HOURS OF VALID WI N DIRECTION.WI N SPEED. STABILITY CLASS E 527 TOTAL HOURS OF VALID WIND DIRECTION.WI M SPEED. STABILITY OBSERVATIONS 2164 TOTAL HOURS Caul 0 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STA81LITY BASED ON DELTA.T BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.42 METER LEVEL DATE PRINTED: 199t.1118 MEAN WI S SPEED = 2.99 NOTE: TOTALS AND SUOTUTALS ARE OSTAINED FROM UNROUNDED NUMBERS E2-23
3 J0!IfF PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS F ( 1.5< DELTA T = 4.0 C/100 N)
Browns Ferry Nuclear Plant JUL 1, 1998 SEP 30, 1998 WIND WIND SPEED (NPH)
DIRECTION CALN 0.5 1.4 1.5 3.4 3.5 5.4 5.5 7.4 7.5 12.4 '12.5 18.4 18.5 24.4 -24.5 TOTAL N 0.000 0.370 1.479 0.693 0.046 0.000 0.000 0.000 0.000 2.588 NNE 0.000 0.462 1.155 0.739 0.139 0.000 0.000 0.000 0.000 2.495 NE 0.000 0.185 0.508 0.555 0.139 0.092 0.000 0.000 0.000 1.479 ENE 0.000 0.092- 0.970 0.462 0.046 0.000 0.000 0.000 0.000 1.571 E
O.000 0.185 1.987 0.693 0.000 3.000 0.000 0.000 0.000 2.865 ESE 0.000 0.000 0.508 0.000 0.000 0.000 0.000 0.000 0.000 0.508 SE . 0.000 0.139 0.185 0.000 0.000 0.000 0.000 0.000 0.000 0.323 SSE 0.000 0.231 0.046 0.000 0.0% 0.000 0.000 0.000 0.000 0.277 5 0.000 0.092 0.046 0.000 0 '/00 0.000 0.000 0.000 0.000 0.139
$$W 0.000 0.139 0.092 0.000 J.000 0.000 0.000 0.000 0.000 0.231 SW 0.000 0.046 0.046 0.000 0.000 0.000 0.000 0.000 0.000 .0.092 k"W 0.000 0.139 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.185 W 0.000 0.092 0.000 0.ON 0.000 0.000 0.000 0.000 0.000 0.092 All 0.000 - 0.185 0.092 0. 0'. 0 0.000 0.000 0.000 0.000 0.000 0.277 W -0.000 0.185 0.139 0.0/ 0 0.000 0.000 0.000 0.000 0.000 0.323 NIti 0.000 0.508 0.601 0.fJ2 0.000 0.000 0.000 0.000 0.000 1.201 SUBTOTAL 0.000 3.050' 7.?2 L.235 0.370 0.092 0.000 0.000 0.000 14.649 TOTAL HOURS OF VALID STABILITY OBSERVATIONS ,
2164 TOTAL HOURS OF STABILITY CLASS F 317 TOTAL HOURS OF VALID WI M DIRECTION WI S SPEED STABILITY CLASS F 317 10TAL HOURS OF VAllD WIND DIRECTION. WIN SPEED STABILITY OBSERVATIONS 2164 TOTAL HOURS CAUi 0 3
NETEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA T BETWEEN 10.03 AND 45.30 NETERS i WIND SPEED AND DIRECTION NEASURED AT 10.42 NETER LEVEL l DATE PRINTED: 19981118 NEAN WIN SPEED =' 2.64 l NOTE: TOTALS AND SUOTOTALS ARE OSTAINED FRON UNROUNDED NUNDERS E2-24
I JOINT PERCENTMiE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS G (DELTA T = 4.0 C/100 M)
Browns Ferry Nuclear Plant JUL 1. 1998 SEP 30, 1998 WIND WIND SPEED (MPH)
DIRECTION CALM 0.6 1.4 1.5 3.4 3.5 5.4 5.5 7.4 7.5 12.4 12.5 18.4 18.5 24.4 >=24.5 TOTAL N 0.068 1.664 2.218 0.462 0.000 0.000 0.000 0.000 0.000 4.412 NNE 0.040 0.739 1.525 0.416 0.000 0.000 0.000 0.000 0.000 2.720 NE 0.015 0.231 0.693 0.139 0.000 0.000 0.000 0.000 0.000 1.079 ENE 0.016 0.139 0.786 0.165 0.000 0.000 0.000 0.000 0.000 1.125 E 0.005 0.092 0.185 0.000 0.000 0.000 0.000 0.000 0.000 0.282 ESE 0.002 0.046 0.046 0.000
- 0.000 0.000 0.000 0.000 0.000 0.094 SE 0.002 0.000 0.092 0.000 0.000 0.000 0.000 0.000 0.000 0.094 SSE 0.002 0.000 0.139 0.000 0.000 0.000 0.000 0.000 0.000 0.141 S 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SSW 0.002 0.092 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.094 SW 0.001 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.047 WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W 0.002 0.092 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.094 WW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W 0.004 0.231 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.235 NW 0.026 0.924 0.555 0.046 0.000 0.000 0.000 0.000 0.000 1.551 SU8 TOTAL 0.185 4.251 6.285 1.248 0.000 0.000 0.000 0.000 0.000 11.969 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2164 TOTAL HOURS OF STABILITY CIASS G 259 TOTAL HOURS OF VALID W12 DIRECTION.WIM SPEED STABILITY CLASS G 259 TOTAL HOURS OF VALID WIND DIRECTION W! E SPEED STABILITY OBSERVATIONS 2164 TOTAL HOURS CALM 4 METEOR 0 LOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA T BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.42 METER LEVEL DATE PRINTED: 19981118 MEAN Wi m SPEED = 2.04 NOTE: TOTALS AND SUBTUTALS ARE OBTAINED FROM UNROUNDED NUMBERS i
E2-25 L.. .
m-Radi:logicalImpact Assessment Browns F rry Nuclear Plant -
! January- December 1998 I .. <
\-
Table 13 Joint Frequency Distribution in Percent for Ground Level Releases Fourth Quarter l ..
t-E2-26
c.
l l
I JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS A (DELTA T<= 1.9 C/100 M)
Browns Ferry Nuclear Plant OCT 1, 1998 DEC 31, 1998 WIND WIND SPEED (MPH)
DIRECTION CALM 0.6-1.4 1.5 3.4 3.5 5.4 5.5 7.4 7.5 12.4 12.5 18.4 18.5 24.4 >=24.5 TOTAL N 0.000 0.000 0.000 0.000 0.096 0.527 0.048 0.000 0.000 0.671 NNE 0.000 0.000 0.000 0.000 0.048 0.959 0.192 0.000 0.000 1.198 NE 0.000 0.000 0.000 0.000 0.000 0.192 0.0% 0.000 0.000 0.288 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000-E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0,000 0.000 0.000 ESE 0.000 0.000 0.000 0.192 0.000 0.000 0.000 0.000 0.000 0.192 SE 0.000 0.000 0.096 0.479 0.000 0.000 0.000 0.000 0.000 0.575 CSE 0.000 0.000 0.240 0.6 71 0.000 0.000 0.000 0.000 0.000 0.911 S 0.000 0.000 0.192 0.431 0.048 0.000 0.000 0.000 0.000 0.671
$$W 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WNW. 0.000 0.0C0 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NNW 0.000 0.000 0.000 0.000 0.000 0.048 0.000 0.000 0.000 0.048
$USTOTAL 0.000 0.000 0.527 1.774 0.192 1.726 0.336 0.000 0.000 4.554
. TOTAL HOURS OF VALID STASILITY OBSERVATIONS 2189 TOTAL HOURS OF STASILITY CLASS A 95 TOTAL HOURS OF VALID WIND DIRECTION WIND SPEED-STASILITY CLASS A 95 TOTAL HOURS OF VALID WIND DIRECTION WIND SPEED STABILITY OBSERVATIONS 2086 -
TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant l STABILITY BASED ON DELTA T $ETWEEN 10.03 AND 45.30 METERS {
WIND SPEED AND DIRECTION MEASURED AT 10.42 METER LEVEL l.
DATE PRINTED: 19990209 i MEAN WIND SPEED = 7.02 i l
NOTE: TOTALS AND SUST0TALS ARE OSTAINED FROM UNROUNDED WUMBERS l
E2-27 m
JolNT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS B (-1.9< DELTA T<= 1.7 C/100 M)
Browns. Ferry Nuclear Plant OCT 1, 1998 DEC 31, 1998 WINO WIND SPEED (MPH)
DIRECTION CALM 0.6-1.4 1.5 3.4 3.5 5.4 5.5-7.4 7.5-12.4 12.5 18.4 18.5-24.4 >=24.5 TOTAL N 0.000 0.000 .0.000 0.000 0.144 0.192 0.000 0.000 0.000 0.336 NNE 0.U.3 0.000 0.000 0.000 0.096. 0.144 0.000 0.000 0.000 0.240 NE 0.000 0.000 0.000 0.000 0.000 0.192 0.048 0.000 0.000 0.240 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.096 0.000 0.000 0.000 0.000 0.000 0.096 SE 0.000 0.000 0.048 0.240 0.000 0.000 0.000 0.000 0.000 0.288 SSE 0.000 0.000 0.048 0.192 0.000 0.000 0.000 0.000 0.000 0.240 S 0.000 0.000 0.048 0.144 0.048 0.000 0.000 0.000 0.000 0.240
$$W 0.000 0.000 0.096 0.096 0.000 0.000 0.000 0.000 0.000 0.192 SW 0.000 0.000 0.000 0.096 0.000 0.000 0.000 0.000 0.000 0.096 WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W 0.000 0.000 - 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WNW C.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NW 0.000 0.000 0.000 0.000 0.048 0.096 0.000 0.000 0.000 0.144 NNW 0.000 0.000 0.000 0.000 0.000 0.048 0.000 0.000 0.000 0.048 SUST0TAL 0.000 0.000 0.240 0.863 0.336 0.671 0.048 0.000 0.000 2.157 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2189 TOTAL HOURS OF STASILITY CLASS B- 45 TOTAL HOURS OF VALID WIND DIRECTION WIWD SPEED STABILITY CLASS 5 45 TOTAL HOURS OF VALID WIND DIRECTION WIND SPEED STASILITY OSSERVATIONS 2086 -
TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA T SETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.42 METER LEVEL DATE PRINTED: 19990209 MEAN WIND SPEED = 6.07
' NOTE: TOTALS AND SUBTOTALS ARE OSTAINED FROM UNROUNDED NUMBERS l
E2-28
........v.. . . . . . _ _ . -. ____________.j
I 1
, l l
l JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WINO DIRECTION FOR STABILITY CLASS C ( 1.7< DELTA T<= 1.5 C/100 M)
Browns Ferry Nuclear Plant OCT 1. 1998 DEC 31, 1998
=
1 i
WIND WIND SPEED (MPN), i I
DIRECTION CALM 0.6 1.4 1.5 3.4 3.5 5.4 5.5 7.4 7.5 12.4 12.5 18.4 18.5 24.4 >=24.5 TOTAL i
N 0.000 0.000 0.000 0.000 0.096 0.192 0.000 0.000 0.000 0.28' NNE 0.000 0.000 0.000 0.096 0.192 0.096 0.000 0.000 0.000 0.384 NE 0.000 0.000 0.000 0.000 0.240 0.048 0.000 0.000 0.000 0.288 ENE 0.000 0.000 0.000 0.048 0.000 0.000 0.000 0.000 0.000 0.048 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.192 0.000 0.000 0.000 0.000 0.000 0.192 q
SE 0.000 0.000 0.144 0.000 0.000 0.000 0.000 0.000 0.000 0.144 l
SSE 0.000 0.000 0.144 0.240 0.000 0.000 0.000 0.000 0.000 0.384 5 0.000 0.000 0.144 0.144 0.048 0.000 0.000 0.000 0.000 0.336 SSW 0.000 0.000 0.000 0.048 0.000 0.000 0.000 0.000 0.000 0.048 SW 0.000 0.000 0.000 0.096 0.000 0.000 0.000 0.000 0.000 0.096 WSW 0.000 0.000 0.048 0.000 0.096 0.000 0.000 0.000 0.000 0.144 W 0.000 0.000 0.000 0.048 0.000 0.000 0.000 0.000 0.000 0.048 l WNW 0.000 0.000 0.000 0.048 0.000 0.000 0.000 0.000 0.000 0.048 I NW 0.000 0.000 0.000 0.000 0.048 0.288 0.048 0.000 0.000 0.384 NNW 0.000 0.000 0.000 0.000 0.240 0.288 0.000 0.000 0.000 0.527 SU8 TOTAL 0.000 0.000 0.479 0.959 0.959 0.911 0.048 0.000 0.000 3.356 1
l TOTAL HOURS OF VALID STABILITY OSSERVAT!0Ns , 2189 TOTAL HOURS OF STABILITY CLASS C 70 l TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED STABILITY CLASS C 70 l TOTAL HOURS OF VALID WIND DIRECTION WIND SPEED STABILITY OBSERVATIONS 2086 -
l TOTAL HOURS CALM 0 ,
i l
METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant <
STABILITY BASED ON DELTA T BETWEEN 10.03 AND 45.30 METERS I WIND SPEED AND DIRECTION MEASURED AT 10.42 METER LEVEL DATE PRINTED: 19990209 MEAN WIND SPEED = 6.30 NOTE: TOTALS AND SUST0TALS ARE OBTAINED FROM UWROUNDED NUMBERS E2-29
JOINT PERCENTAGE FREQUENCIES OF WIND SPEED SY WIND DIRECTION FOR STASILITY CLASS D (-1.5< DELTA T<= 0.5 C/100 M)
Sro ms Ferry Nuclear Plant DCT 1, 1998 - DEC 31, 1998 WIND WIND $ PEED (MPH)
. DIRECTION CALM 0.6 1.4 1.5 3.4 3.5 5.4 5 .5 - 7. 4 7.5 12.4 12.5 18.4 18.5 24.4 >=24.5 TOTAL N 0.000 0.048 0.288 0.911 1.390 1.486 0.144 0.000 0.000 4.267 NME 0.000 0.096 0.288 0.671 1.007 0.719 0.000 0.000 0.000 2.780 NE 0.000 0.000 0.815 0.719 0.479 0.431 0.000 0.000 0.000 2.445 ENE 0.000 0.000 0.575 0.479 0.240 0.000 0.000 0.000 0.000 1.294 E 0.000 0.000 0.336 0.288 0.240 0.000 0.000 0.000 0.000 0.863 ESE 0.000 0.048 0.527 0.575 0.096 0.000 0.000 0.000 0.000 1.246 SE 0.000 0.048 1.534 1.103 0.192 0.000 0.000 0.000 0.000 2.876 SSE 0.000 0.048 1.678 1.965 0.000 0.000 0.000 0.000 0.000 3.691 S 0.000 0.048 1.342 0.623 0.048 0.000 0.000 0.000 0.000 2.061 SSW 0.000 0.096 0.479 0.288 0.000 0.000 0.000 0.000 0.000 0.863 SW 0.000 0.000 0.144 0.479 0.000 0.000 0.000 0.000 0.000 0.623 WSW 0.000 0.000 0.431 0.431 0.144 0.096 0.000 0.000 0.000 1.103 W 0.000 0.000 -0.288 0.479 0.575 0.192 0.000 0.000 0.000 1.534 WWW 0.000 - 0.000 0.096 0.288 0.144 0.527 0.048 0.000 0.000 1.103 NW 0.000 0.000 0.240 0.575 0.575 1.390 0.240 0.048 0.000 3.068 NNW 'O.000 0.000 0.240 0.671 0.575 1.630 0.431 0.048 0.000 3.595 SUS 70TAL. 0.000 0.431 9.300 10.547 5.705 6.472 0.863 0.0% 0.000 33.413 TOTAL HOURS OF VALID STABILITY OSSERVATIONS 2189 TOTAL HOURS OF STASILITY CLASS D 752 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED STABILITY CLASS D 697 TOTAL HOURS OF VALID WIND DIRECTION WIND SPEED STABILITY OSSERVATIONS 2006 .
- TOTAL HOURS CALM 0 METEOROLOGICAL FACILITT Sroms Ferry Nuclear Plant STABILITY BASED ON DELTA-T SETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.42 METER LEVEL DATE PRINTED: 19990209 MEAN WIN 0 SPEED = 5.41 NOTE: TOTALS AND SUST0TALS ARE OSTAINED FROM UNROUNDED NUMBERS l
E2-30 !
]
p t.
JOINT PERCENTAGE FREQUENCIES OF WIhD SPEED BY WINO DIRECTION FOR l
STABILITY CLASS E . ( 0.5< DELTA T<= 1.5 C/100 M)
Browns Ferry Nuclear Plant OCT 1, 1998 DEC 31, 1998 WIND WIND SPEED (MPH)
DIRECTION CALM ~ 0.6 1.4 1.5 3.4 3.5 5.4 5.5-7.4 7.5-12.4 12.5 18.4 18.5 24.4 n24.5 TOTAL i
N 0.006 0.336 0.575 0.911 0.384 0.144 0.000 0.000 0.000 2.355 NNE 0.006 0.096 0.719 0.384 0.384 0.192 0.000 0.000 0.000 1.779 NE 0.003 0.000 0.479 0.479 0.336 0.096 0.000 0.000 0.000 1.394 ENE 0.006 0.144 0.767 0.048 0.096 0.096 0.000 0.000 0.000 1.157 l E 0.008 0.288 0.863 0.384 0.096 0.048 0.000 0.000 0.000 1.686
)
ESE 0.013 0.384 1.438 0.767 0.000 0.000 0.000 0.000 0.000 2.601 SE 0.013 0.479 1.390 0.815 0.144 0.000 0.000 0.000 0.000 2.841 SSE 0.017 0.384 2.013 0.863 0.431 0.048 0.000 0.000 0.000 3.756 S 0.006 0.144 0.719 1.198 1.390 0.192 0.000 0.000 0.000 3.649 l SSW 0.002 - 0.048 0.288 0.288 0.000 0.000 0.000 0.000 0.000 0.626 SW 0.003 0.000 0.431 0.144 0.000 0.000 0.000 0.000 0.000 0.578 l WSW 0.002 0.048 0.288 0.192 0.096 0.000 0.000 0.000 0.000 0.626 W 0.003 0.000- 0.384 0.096 0.000 0.000 0.000 0.000 0.000 0.482 WNW 0.003 0.096 0.288 0.096 0.144 0.048 0.000 0.000 0.000 0.674 NW 0.001 0.048 0.144 0.240 0.048 0.192 0.048 0.000 0.000 0.720 NNW 0.003 0.144 0.336 0.815 0.527 0.144 0.048 0.000 0.000 2.017 SUBTOTAL 0.0% 2.637 11.122 7.718 4.075 1.198 0.096 0.000 0.000 26.942 TOTAL HOURS OF VALID STABILITY OBSERVAT!0NS 2189 TOTAL HOURS OF STABILITY CLASS E 579 TOTAL HOURS OF VALID WIND DIRECTION-WIS SPEED STABILITY CLASS E 562 TOTAL HOURS OF VALID WIND DIRECTION WI N SPEED STA81LITY OBSERVATIONS 2086 TOTAL HOURS CALM 2 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STASILITY BASED ON DELTA T BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.42 METER LEVEL DATE PRINTED: 19990209 MEAN WIND SPEED = 3.73 NOTE: TOTALS A W SUOTOTALS ARE OSTAINED FROM UNROUNDED NUMSERS E2-31 m
p JOINT PERCENTAGE FREQUENCIES OF WINO SPEED BY WIND DIRECTION f &
STA81LITY CLASS F ( 1.5< DELTA Tc= 4.0 C/100 M)
Browns Ferry Nuclear Plant OCT 1, 1998 - DEC 31, 1998 WIND WIND SPEED (H9H)
DIRECTION CALM 0.6 1.4 1.5 3.4 3.5 5.4 5.5 7.4 7.5 12.4 12.5 18.4 18.5 24.4 >=24.5 TOTAL
-N 0.020 0.096 1.198 1.007 0.240 0.048 0.000 0.000 0.000 2.608 NNE 0.007 0.096 0.384 1.198 0.527 0.000 0.000 0.000 0.000 2.212 NE 0.006 0.096 0.288 0.144 0.096 0.000 0.000 0.000 0.000 0.629 ENE 0.010 0.240 0.431 0.336 0.000 0.000 0.000 0.000 0.000 1.017 E 0.017 0.144 1.007 0.431 0.000 0.000 0.000 0.000 0.000 1.599 ESE 0.017 0.096 1.055 0.048 0.000 0.000 0.000 0.000 0.000 1.216 SE 0.015 0.575 0.431 0.096 0.000 0.000 0.000 0.000 0.000 1.118 SSE 0.017 0.384 0.767 0.144 0.048 0.000 0.000 0.000 0.000 1.360 S 0.007 0.144 0.336 0.336 0.431 0.048 0.000 0.000 0.000 1.302 SSW 0.001 0.000 'O.048 0.000 0.000 0.048 0.000 0.000 0.000 0.097 SW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WSW 0.001 0.048 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.049 W 0.001 0.096 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.097 WWW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NW 0.007 0.336 0.144 0.048 0.000 0.000 0.000 0.000 0.000 0.535 NNW 0.017 0.240 0.863 -0.336 0.048 0.000 0.000 0.000 0.000 1.503 SUS 70TAL 0.144 2.589 6.951 4.123 1.390 0.144 0.000 0.000 0.000 15.340 TOTAL HOURS OF VALID STA8!LITT OBSERVATIONS 2189 TOTAL HOURS OF STABILITY CLASS F 328 TOTAL HOURS OF VALID WIND O! RECT!nN-WIND SPEED STABILITY CLASS F 320 TOTAL HOURS OF VALID WIND O!RECTION WIND SPEED STASILITY 00 SERVAT!0NS 2086 -
TOTAL HOURS CALM 3 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA T BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.42 METER LEVEL DATE PRINTED: 19990209 MEAN WIND SPEED e 3.03 NOTE: TOTALS AND SU5 TOTALS ARE OSTAINED FROM UNROUNDED NUMBERS E2-32
J0!NT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS G (DELTA T > 4.0 C/100 M)
Browns Ferry Nuclear Plant OCT 1, 1998 - DEC 31, 1998 WIND WIND SPEED (MPH)
DIRECTION -CALM 0.6-1.4 1.5 3.4 3.5 5.4 5.5 7.4 7.5 12.4 12.5-18.4 18.5 24.4 >=24.5 TOTAL N 0.135 0.959 2.061 0.336 0.000 0.000 0.000 0.000 0.000 3.491 NCE 0.045 0.336 0.671 0.623 0.000 0.000 0.000 0.000 0.000 1.675 NE 0.066 0.431 1.055 0.096 0.000 0.000 0.000 0.000 0.000 1.648 ENE 0.051 0.288 0.863 0.384 0.000 0.000 0.000 0.000 0.000 1.585 E 0.030 0.192 0.479 0.096 0.000 0.000 0.000 0.000 0.000 0.797 ESE 0.015 0.192 0.144 0.000 0.000 0.000 0.000 0.000 0.000 0.351 SE 0.009 0.048 0.144 0.048 0.000 0.000 0.000 0.000 0.000 0.248 SSE 0.086 0.575 1.342 0.0% 0.000 0.000 0.000 0.000 0.000 2.099
$ 0.011 0.144 0.0% 0.144 0.000 0.000 0.000 0.000 0.000 0.394 SSW 0.006 0.096 0.048 0.000 0.000 0.000 0.000 0.000 0.000 0.150 SW 0.002 0.048 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.050 WSU 0.004 0.048 0.048 0.000 0.000 0.000 0.000 0.000 0.000 0.100 W 0.002 0.048 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.050 WN3 0.009 0.192 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.200 N3 0.013 0.240 0.048 0.000 0.000 0.000 0.000 0.000 0.000 0.300 00W 0.043 0.479 0.479 0.096 0.000 0.000 0.000 0.000 0.000 1.098 SUB707AL 0.527 4.314 7.478 1.918 0.000 0.000 0.000 0.000 0.000 14.238 TOTAL HOURS OF VALID STABILITY OGSERVATIONS 2189 TOTAL HOURS OF STABILITY CLASS G 320 TOTAL HOURS OF VALID WIND DIRECTION WIND SPEED STABILITY CLASS G 297 TOTAL HOURS OF VALID WIND DIRECTION WIND SPEED STABILITY OBSERVATIONS 2086 .
T07AL HOURS CALM 11 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA T BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.42 METER LEVEL DATE PRINTED: 19990209 MEAD WIND SPEED = 2.07 N07E TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-33
RadiologicalImpact Assessment i
Br:wns Rrry Nzclear Plant January - December 1998 Table 14 Joint Frequency Distribution in Percent for Split Level Releases -
(Ground Level Portion)
First Quarter o
e E2-34
r.
SPLIT JotNT PERCENTAGE FREQUENCIEE OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS A (DELTA T<= 1.9 C/100 M)
Browns Ferry Nuclear Plant PART 1 0F 2 GROUND LEVEL RELEASE MODE JAN 1, 98 MAR 31, 98 WIS WIN SPEED (MPN)
DIRECTION CALM 0.6 1.4 1.5 3.4 3.5 5.4 5.57.4 7.5 12.4 12.5 18.4 18.5 24.4 >=24.5 TOTAL N 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NME 0.000 0.000 0.000 0.000 0.003 0.005 0.000 0.000 0.000 0.006 NE 0.000 0.000 0.000 0.000 0.006 0.018 0.000 0.000 0.000 0.026 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.003 0.017 0.014 0.000 0.000 0.000 0.034
- SE 0.000 0.000 0.000 0.009 0.024 0.018 0.000 0.000 0.000 0.051 SSE 0.000 0.000 0.000 0.093 0.000 0.000 0.000 0.000 0.000 0.093
$ 0.000 0.000- 0.000 0.032 0.000 0.000 0.000 0.000 0.000 0.032 SSW 0.000 0.000 0.000 0.009 0.016 0.000 0.000 0.000 0.000 0.025 SW 0.000 0.000 0.000 0.015 0.000 0.009 0.000 0.000 0.000 0.024 WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W 0.000 0.000 0.000 0.000 0.000 0.008 0.000 0.000 0.000 0.008 WWW 0.000 0.000 0.000 0.000 0.000 0.009 0.000 0.000 0.000 0.009 .
NW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NNW 0.000 0.000 0.000 0.000 0.000 0.008 0.000 0.000 0.000 0.008 SUBTOTAL 0.000 0.000 0.000 0.160 0.067 0.090 0.000 0.000 0.000 0.317 TOTAL HOURS OF VALID OBSERVATIONS 2115.000 TOTAL HOURS OF GROU W LEVEL RELEASE 300.630 TOTAL HOURS OF STA51LITY CLASS A 6.710 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS A 6.710 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA T BETWEEN 10.03 AND 45.30 METERS l l
WIND DIRECTION IEASURED AT 10.42 METER LEVEL
' WIND SPEED MEASURED AT 10.42 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 24 Apr 98 NOTE: TOTALS AW SUITOTALS ARE OSTAINED FROM UNROUNDED NUMBERS E2 35 j
l SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS B ( 1.9< DELTA T o 1.7 C/100 M)
Browns Ferry Nuclear Plant PART 1 0F 2 GROUND LEVEL RELEASE MODE JAN 1, 98 - MAR 31, 98 WIS WI W SPEED (MPN)
- DIRECTION CALM 0.6-1.4 1.5-3.4 3.5 5.4 5.5 7.4 7.5 12.4 12.5 18.4 18.5 24.4 p24.5 TOTAL N 0.000 0.000 0.000 0.000 0.000 0.006 0.000 0.000 0.000 0.006 NME 0.000 0.000 0.000 0.000 0.006 0.009 0.000 0.000 0.000 0.015 NE 0.000 0.000 0.000 0.001 0.008 0.005 0.000 0.000 0.000 0.014 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.001 0.009 0.009 0.000 0.000 0.000 0.018 ESE 0.000 0.000 0.000 0.002 0.000 0.018 0.000 0.000 0.000 0.020 SE 0.000 0.000 0.000 0.015 0.015 0.009 0.000 0.000 0.000 0.038 SSE 0.000 0.000 0.000 0.020 0.000 0.000 0.000 0.000 0.000 0.020 S 0.000 0.000 0.000 0.008 0.000 0.000 0.000 0.000 0.000 0.008 SSW 0.000 0.000 0.000 0.007 0.000 0.000 0.000 0.000 0.000 0.007 SW 0.000 0.000 0.008 0.000 0.000 0.000 0.000 0.000 0.000 0.008 WSW 0.000 0.000 0.000 0.000 0.008 0.009 0.000 0.000 0.000 0.017 W 0.006 0.000 0.000 0.000 0.000 0.022 0.000 0.000 0.000 0.022 WNW 0.000 0.000 0.000 0.000 0.000 0.038 0.009 0.000 0.000 0.047 NW 0.000 0.000 0.000 0.000 0.000 0.032 0.009 0.000 0.000 0.042 NNW 0.000 0.000 0.000 0.000 0.000 0.033 0.026 0.000 0.000 0.058 SUBTOTAL 0.000 0.000 0.008 0.054 0.044 0.190 0.044 0.000 0.000 0.341 TOTAL HOURS OF VALID OBSERVATIONS 2115.000 TOTAL NOURS OF GROU W LEVEL RELEASE 300.630 TOTAL NOURS OF STABILITY CLAts B 11.530 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS B 7.210 l METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant l STASILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS l WIND DIRECTION MEASURED AT 10.42 NETER LEVEL WIND SPEED MEASURED AT 10.42 METER LEVEL EFFLUENT YELOCITY = 12.60 N/S j 0 ATE PRINTED: 24-Apr 98 l
NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FR058 UNROUNDED NUMBERS E2-36
- 7. . -
i SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIM DIRECTION FOR STABILITY CLASS C ( 1.7< DELTA Tc= 1.5 C/100 M) 1 Browns Ferry Nuclear Plant l PART 1 0F 2 GROUND LEVEL RELEASE MODE JAN 1, 98 MAR 31, 98 WIND WIND SPEED (MPN)
DIRECTION CALM 0.6 1.4 1.5 3.4 3.5 5.4 5.5 7.4 7.5 12.4 12.5 18.4 18.5 24.4 >=24.5 TOTAL M 0.000 0.000 0.000 0.000 0.003 0.000 0.000 0.000 0.000 0.003 NM 0.000 0.000 0.000 0.001 0.005 0.024 0.000 0.000 0.000 0.031 NE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ENE 0.000 0.000 0.000 0.000 0.006 0.011 0.000 0.000 0.000 0.019 E 0.000 0.000 0.000 0.000 0.000 0.006 0.000 0.000 0.000 0.008 ESE 0.000 0.000 0.000 0.013 0.000 0.000 0.000 0.000 0.000 0.013 SE 0.000 0.000 0.000 0.008 0.000 0.000 0.000 0.000 0.000 0.008 SSE 0.000 0.000 0.000 0.009 0.000 0.000 0.000 0.000 0.000 0.009 8 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000
$$W 0.000 0.000 0.000 0.005 0.000 0.000 0.000 0.000 0.000 0.005 !
SW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WSW . 0.000 0.000 0.000 0.005 0.015 0.010 0.000 0.000 0.000 0.030 W 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WNW 0.000 0.000 0.000 0.000 0.004 0.050 0.000 0.000 0.000 0.054 NW 0.000 0.000 0.000 0.000 0.000 0.049 0.038 0.000 0.000 0.087 NNW 0.000 0.000 0.000 0.000 0.000 0.015 0.030 0.000 0.000 0.044 SU, A 0.000 0.000 0.000 0.040 0.035 0.167 0.068 0.000 0.000 0.310 i
l TOTAL HOURS OF VALID CSSERVATIONS 2115.000 TOTAL NOURS OF GROU W LEVEL RELEASE 300.630 1 TOTAL NOURS OF STABILITY CLASS C 19.280 TOTAL NOURS OF GROUW LEVEL STABILITY CLASS C 6.560 l
METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant j STABILITY BASED ON DELTA T BETWEEN 10.03 AW 45.30 METERS ]
WIW DIRECTION MASURED AT 10.42 M TER LEVEL j
Wi m SPEED MEASURED AT 10.42 METER LEVEL i
EFFLUENT VELOCITY = 12.60 N/S i . DATE PRINTED: 24 Apr-98 ,
I {
l NOTE: TOTALS Am SUBT0TALS ARE OSTAINED FRON UNROUNDED NUMBERS l l
E2-37
SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR 3TABILITY CLASS 0 (-1.5< DELTA T<=-0.5 C/100 M)
Browns Ferry Nucteer Plant PART 1 0F 2 GROUND LEVEL RELEASE MODE JAN 1, 98 - MAR 31, 98 WIS WI N SPEED (MPN)
DIRECTION CALM 0.6 1.4 1.5 3.4 3.5 5.4 5.5 7.4 7.5 12.4 12.5 18.4 18.5 24.4 n24.5 TOTAL N 0.000 0.000 0.000 0.037 0.136 0.147 0.478 0.296 0.000 1.095 NNE 0.000 0.000 0.001 0.037 0.079 0.166 0.025 0.000 0.000 0.309 NE 0.000 0.000 0.000 0.011 0.059 0.151 0.009 0.000 0.000 0.230 ENE 0.000 0.000 0.000 0.026 0.050 0.028 0.000 0.000 0.000 0.104 E 0.000 0.000 0.000 0.043 0.041 0.089 0.020 0.000 0.000 0.193 ESE 0.000 0.000 0.004 0.123 0.152 0.159 0.101 0.000 0.000 0.539 SE 0.000 0.000 0.008 0.167 0.166 0.237 0.033 0.000 0.000 0.611 SSE 0.000 0.000 0.030 0.138 0.038 0.047 0.000 0.000 0.000 0.253 S 0.000 0.000 0.008 0.048 0.035 0.214 0.000 0.000 0.000 0.305 SSW 0.000 0.000 0.006 0.036 0.047 0.024 0.000 0.000 0.000 0.113 SW 0.000 0.000 0.001 0.000 0.028 0.181 0.000 0.000 0.000 0.210 WSW 0.000 0.000 0.002 0.011 0.082 0.426 0.033 0.000 0.000 0.555 W 0.000 0.000 0.000 0.022 0.093 0.340 0.064 0.000 0.000 0.520 WNW 0.000 0.000 0.0@ 0.009 0.030 0.249 0.138 0.000 0.000 0.426 NW 0.000 0.000 0.000 0.001 0.071 0.451 0.357 0.032 0.000 0.911 NNW 0.000 0.000 0.000 0.033 0.146 0.357 0.258 0.042 0.000 0.836 SUBTOTAL 0.000 0.000 0.059 0.743 1.252 3.268 1.517 0.370 0.000 7.209 TOTAL N3URS OF VALID OBSERVATIONS 2115.000 TOTAL NOURS OF GROUW LEVEL RELEASE 300.630 TOTAL NOURS OF STABILITY CLASS D 1278.490 TOTAL NOURS OF GROUND LEVEL STASILITY CLASS 0 152.480 METEOROLOGICAL FACILITY: Browns Ferry Nucteer Plant STABILITY BASED ON DELTA T BETWEN 10.03 AND 45.30 METERS WIND DIRECTION MEASURED AT 10.42 METER LEVEL WI W SPEED MEASURED AT 10.42 METER LEVEL EFFLUENT VELOCITY = 12.60 N/S DATE PRINTED: 24 Apr-98 NOTE: TOTALS Am SUBTOTALS ARE OSTAINED FROM UNROUNDED NUMBERS E2-38
l SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED SY Wie DIRECTION FOR STA51LITY CLASS E ( 0.5< DELTA Tc= 1.5 C/100 m)
Brouns Ferry Nucteer Plant PART 1 0F 2 GROUND LEVEL RELEASE MODE JAN 1, 96 - MAR 31, 96 WIm Wim SPEED (MPH)
DIRECTION CALM 0.6 1.4 1.5 3.4 3.5 5.4 5.5 7.4 7.5 12.4 12.5 18.4 13.5 24.4 n24.5 TOTAL N 0.000 0.000 0.010 0.036 0.014 0.006 0.000 0.000 0.000 0.069 NME 0.000 0.000 0.006 0.038 0.022 0.000 0.026 0.000 0.000 0.092 NE 0.000 0.000 0.005 0.068 0.006 0.046 0.039 0.000 0.000 0.164 ENE 0.000 0.000 0.004 0.035 0.000 0.009 0.000 0.000 0.000 0.049 E 0.000 0.000 0.034 0.061 0.059 0.000 0.000 0.000 0.000 0.154 ESE 0.000 0.000 0.043 0.230 0.038 0.046 0.000 0.000 0.000 0.357 SE 0.000 0.000 0.074 0.190 0.113 0.066 0.000 0.060 0.000 0.443 SSE 0.000 0.002 0.109 0.165 0.128 0.047 0.000 0.000 0.000 0.452 S 0.000 0.000 0.046 0.110 0.214 0.531 0.000 0.000 0.000 0.902 SSW 0.000 0.000 0.011 0.015 0.009 0.027 0.000 0.000 0.000 0.062 SW 0.000 0.000 0.015 0.007 0.009 0.023 0.000 0.000 0.000 0.053 WSW 0.000 0.000 0.009 0.009 0.017 0.009 0.033 0.000 0.000 0.077 W 0.000 0.000 0.011 0.027 0.006 0.000 0.026 0.000 0.000 0.070 WNW 0.000 0.000 0.010 0.017 0.015 0.000 0.000 0.000 0.000 0.042 NW 0.000 0.000 0.004 0.028 0.055 0.073 0.000 0.000 0.000 0.159 NNW 0.000 0.000 0.016 0.075 0.046 0.035 0.000 0.000 0.000 0.172 SUOT0fAL 0.000 0.003 0.407 1.112 0.750 0.920 0.123 0.000 0.000 3.316 TOTAL HOURS OF VALID OSSERVATIONS 2115.000 TOTAL HOURS 0? GROUS LEVEL RELEASE 300.630 ;
TOTAL HOURS OF STASILITY CLASS E 659.300 TOTAL NOURS OF GROUW LEVEL STA8XLITY CLASS E 70.130 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STASILITY BASED ON DELTA-T BEinEEN 10.03 A m 45.30 METERS WI W DIRECTION MEASURED AT 10.42 METER LEVEL WIND SPEED MEASURED AT 10.42 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 24 Apr-96 NOTE: TOTALS A m SUBTOTALS ARE OSTA!NED FROM UNROU SED NUMBERS E2-39 ;
I
1 l
SPLIT J0!NT PERCENTAGE FREQUENCIES OF WIND SPEED ST WIND DIRECTION FOR STABILITY CLASS F ( 1.5< DELTA Ta 4.0 C/100 M)
Browns Ferry Nuclear Plant PART 1 0F 2 GROUND LEVEL RELEASE MODE-JAN 1, 96 MAR 31, 98 i
WIND WIND SPEED (MPH)
DIRECTION CALM 0.6 1.4 1.5 3.4 3.5-5.4 5.5 7.4 7.5-12.4 12.5 18.4 18.5 24.4 p24.5 TOTAL N 0.000 0.000 0.017 0.019 0.009 0.000 0.000 0.000 0.000 0.045 NNE 0.000 . 0.000 0.002 0.011 0.024 0.000 0.000 0.000 0.000 0.037 NE 0.000 0.000 0.024 0.006 0.000 0.000 0.000 0.000 0.000 0.030 ENE 0.000 0.000 0.009 0.017 0.000 0.000 0.000 0.000 0.000 0.026 E 0.000 0.000 0.026 0.072 0.000 0.000 0.000 0.000 0.000 0.096 ESE 0.000 0.000 0.032 0.017 0.000 0.000 0.000 0.000 0.000 0.049 G 0.000 0.017 0.090 0.096 0.049 0.009 0.000 0.000 0.000 0.261
$$E 0.000 0.014 0.153 0.097 0.200 0.042 0.000 0.000 0.000 0.506 j S 0.000 0.007 0.029 0.114 0.137 0.189 0.000 0.000 0.000 0.476 I SSW 0.000 0.001 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.001 I
SW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 l WSW 0.000 0.000 0.003 0.000 0.009 0.000 0.000 0.000 0.000 0.012 l W 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 )
WNW 0.000 0.000 0.007 0.005 0.000 0.000 0.000 0.000 0.000 0.012 )
W 0.000 0.000 0.001 0.005 0.000 0.000 0.000 0.000 0.000 0.006 l NW 0.000 0.000 0.017 0.039 0.025 0.000 0.000 0.000 0.000 0.081 SUBTOTAL 0.000 0.039 0.409 0.500 0.452 0.240 0.000 0.000 0.000 1.641 l
TOTAL HOURS OF VALID OBSERVATIONS 2115.000 ;
TOTAL NOUES OF GROLAS LEVEL RELEASE 300.630 TOTAL NOURS OF STABILITY CLASS P 107.440 TOTAL NOURS OF ORCANS LEVEL STABILITT CLASS F 34.700 METEOROLOGICAL FACILITY: Srowns Ferry Nuclear Plant STABILITT 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 e 12.60 N/S
- DATE PRINTED: 24-Apr-98 NOTE: TOTALS AND SUBT0TALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-40
L I
i I
i
} SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BT WIND DIRECTION FOR l
STABILITY CLASS G (DELTA T > 4.0 C/100 M) 1 Browns Ferry Nuclear Plant PART 1 0F 2 GROUND LEVEL RELEASE MODE l
I l JAN 1, 96 MAR 31, 98 i
! WIS WI E SPEED (MPN)
DIRECTION CALM 0.6 1.4 1.5 3.4 3.5 5.4 5.5 7.4 7.5-12.4 12.5 18.4 18.5 24.4 >=24.5 TOTAL W 0.000 0.000 0.005 0.020 0.000 0.000 0.000 0.000 0.000 0.025 NNE 0.000 0.000 0.000 0.018- 0.006 0.000 0.000 0.000 0.000 0.026 NE 0.000 0.000 0.011 0.000 0.000 0.000 0.000 0.000 0.000 0.011 ENE 0.000 0.000 0.001 0.005 'O.017 0.000 0.000 0.000 0.000 0.022 l E 0.000 0.000 0.004 0.000 0.000 0.000 0.000 0.000 0.000 0.004 ESE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SE 0.000 0.000 0.059 0.051 0.009 0.000 0.000 0.000 0.000 0.118
$$E . 0.000 0.024 0.225 0.186 0.037 0.000 0.000 0.000 0.000 0.471 S 0.000 0.000 0.091 0.133 0.100 0.075 0.000 0.000 0.000 0.399 SSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 l WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 l W 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WWW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NW 0.000 0.000 0.004 0.000 0.000 0.000 0.000 0.000 0.000 0.004 l . SUBTOTAL 0.000 0.024 0.400 0.412 0.169 0.05 0.000 0.000 0.000 1.080 TOTAL HOURS OF VALID OBSERVATIONS 2115.000 TOTAL HOURS OF GROUW LEVEL RELEASE 300.630 TOTAL HOURS OF STABILITY CLASS G 32.250 TOTAL NOURS OF GROUW LEVEL STABILITY CLASS G 22.840 l
METEOROLOGICAL FACILITT Browns Ferry Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS j WI W DIRECTION MEASURED AT 10.42 METER LEVEL WIND SPEED MEASURED AT 10.42 METER LEVEL EFFLUENT VELOCITY . 12.60 N/S
- DATE PRINTED: 24-Apr 98 NOTE: TOTALS AW SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-41
F- .j e
RadiologicalImpact Assessment Br was F;rry N cle:r Plant
' January - December 1998 Table 15 j 1
Joint Frequency Distribution in Percent for Split Level Releases (Ground Level Portion)
Second Quarter l
1
(
(
if E2-42
h L
l' SPLIT JOINT PERCENTAGE FREQUENCIES'0F WIS SPEED BY WIND DIRECTION FOR
{
!?
STABILITY CLASS A '(DELTA T<= 1.9 C/100 M)
Browns Ferry huclear Plant PART 1 0F 2 GROUW LEVEL RELEASE MODE APR 1, 1998 JUN 30, 1998 L
l WINO WIND SPEED (MPN)
DIRECTION CALM 0.6 1.4 1.5 3.4 3.5 5.4 5.57.4 7.5 12.4 12.5 18.4 18.5 24.4 >=24.5 TOTAL N- 0.000- 0.000 0.000 0.000 0.000 0.023 0.000 0.000 0.000 0.023 NME. 0.000 0.000 0.000 0.000 0.010 0.024 0.000 0.000 0.000 0.034 NE 0.000 0.000 0.000 0.000 0.000 0.031 0.000 0.000 0.000 0.031 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 .0.000 0.000 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000
- ESE= 0.000 0.000 0.000 0.009 0.014 0.000 0.000 0.000 0.000 0.023
~ SE 0.000 0.000 0.014 0.008 0.000 0.000 0.000 0.000 0.000 0.022 SSE -O.000 0.000 0.015 0.031 0.000 0.000 0.000 0.000 0.000 0.046 S- 0.000 0.000 0.021 0.015 0.012 0.0 72 0.000 0.000 0.000 0.119 SSW 0.000 0.000 0.022 0.084 0.000 0.000 0.000 0.000 0.000 'O.106 SW 0.000 0.000 0.000 0.031 0.009 0.000 0.000 0.000 0.000 0.040 WSW 0.000 0.000 0.000 0.027 0.122 0.054 0.034 0.000 0.000 0.237 W 0.000 0.000 0.000 0.004 0.051 0.019 0.000 0.000 0.000 0.074 WNW- 0.000 0.000 0.000 0.002 0.000 0.015 0.000 0.000 0.000 0.017 NW 0.000 0.000 0.000 0.000 0.000 0.048 0.018 0.000 0.000 0.066
~ NNW - 0.000- 0.000 0.000 0.000 0.000 0.020 0.000 0.000 0.000 0.020 SUBTOTAL .0.000 0.000 0.071 0.210 0.217 0.306 0.053 0.000 0.000 0.858 TOTAL HOURS OF VALIO CBSERVATIONS 2029.000 TOTAL HOURS OF GROUND LEVEL RELEASE- 191.260 TOTAL HOURS OF STA8tLITY CLASS A- 17.400 TOTAL HOURS OF GROUND LEVEL STABILITY CLASC A 17.400 METEOROLOGICAL FACILITY:- Browns Ferry Nuclear Plant
-STASILITY BASED ON DELTA T BETWEEN 10.03 AND 45.30 METERS WIS DIRECTION MEASURED AT 10.42 METER LEVEL' j ; WIN SPEE0 MEASURED AT 10.42 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 19980720 i
NOTE: TOTALS AND SUBT0TALS ARE OSTAINED FROM UNROUNDED NUMBERS L E2-43 l
i:
7:
SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR I
STABILITY CLASS B. ( 1.9< DELTA T5= 1.7 C/100 M)
{
Browns Ferry NucLeer Plant l
PART 1 0F 2 GROUND LEVEL RELEASE MODE l
APR 1, 1998 - JUN 30, 1998 1 1
l WIND WIND SPEED (MPH)
DIRECTION CALM 0.6 1.4 1.5 3.4 3.5 5.4 5.57.4 7.5 12.4 12.5 18.4 18.5 24.4 >=24.5 bial l
N 0.000 0.000 0.000 0.000 0.013 0.018 0.000 0.000 0.000 0.031 NME 0.000 0.000 0.000 0.002 0.008 0.005 0.000 0.000 0.000 0.015 CJ 0.000 0.000 0.000 0.000 0.000 0.020 0.000 0.000 0.000 0.020 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 j E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.004 0.000 0.008 0.000 0.00C 0.000 0.000 0.012 i SE 0.000 0.000 0.000 0.002 0.000 0.000 0.000 0.000 0.000 0.002
$$E 0.000 0.000 0.006 0.009 0.000 0.000 0.000 0.000 0.000 0.017 5 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SSW 0.000 0.000 0.002 0.000 0.000 0.000 0.000 0.000 0.000 0.002 )
SW 0.000 0.000 0.000 0.020 0.010 0.000 0.000 0.000 0.000 0.030 WSW 0.000 0.000 0.000 0.041 0.051 0.036 0.040 0.000 0.000 0.169 W- 0.000 0.000 0.000 0.013 0.027 0.066 0.031 0.000 0.000 0.136 WWW 0.000 0.000 0.000 0.002 0.013 0.040 0.039 0.000 0.000 0.095 NW 0.000 0.000 0.000 0.000 0.010 0.022 0.030 0.000 0.000 0.061 NNW 0.000 0.000 0.000 0.000 0.006 0.029 0.019 0.000 0.000 0.054 SUBTOTAL 0.000 0.000 0.014 0.089 0.146 0.236 0.158 0.000 0.000 0.643 TOTAL HOURS OF VALID OBSERVAT!0NS 2029.000 TOTAL HOURS OF GROUND LEVEL RELEASE 191.260 TOTAL HOURS OF STABILITY CLASS B 13.980 TOTAL nduRS OF GROUND LEVEL STA8!LITY CLASS B 13.050 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA T BETWEEN 10.03 AND 45.30 METERS WINO DIRECTION MEASURED AT 10.42 METER LEVEL WIND SPEE0 MEASURED AT 10.42 METFR LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 19980720 NOTE: TOTALS AND SUBTOTALS ART OBTAINED FROM UNROUNDED NUMBERS E2-44
r SPLif JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WINO DIRECTION FOR STABILITY CLASS C ( 1.7< DELTA Tc= 1.5 C/100 M)
Browns Ferry Nuclear Plant PANT 10F 2 GROUND LEVEL RELEASE MODE APR 1, 1998 - JUN 30, 1998 WIND WIND SPEED (MPM)
DIRECTION CALM 0.6 1.4 1.5 3.4 3.5 5.4 5.5 7.4 7.5-12.4 12.5 18.4 18.5 24.4 >=24.5 TOTAL l
i N 0.000 0.000 0.000 0.000 0.004 0.016 0.000 0.000 0.000 0.020 NNE 0.000 0.000 0.000 0.003 0.007 0.000 0.000 0.000 0.000 0.010 NE 0.000 0.000 0.000 0.000 0.000 0.007 0.000 0.000 0.000 0.007 ENE 0.000 0.000 0.000 0.000 0.004 0.000 0.000 0.000 0.000 0.004 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.000 0.009 0.000 0.000 0.000 0.000 0.009 SE 0.000 0.000 0.000 0.002 0.000 0.000 0.000 0.000 0.000 0.002 SSE- 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 5 0.000 0.000 0.009 0.009 0.017 0.000 0.000 0.000 0.000 0.035 SSW 0.000 0.000 0.007 0.017 0.000 0.000 0.000 0.000 0.000 0.025 SW 0.000 0.000 0.003 0.019 0.000 0.000 0.000 0.000 0.000 0.022 WSW 0.000 0.000 0.000 0.014 0.039 0.038 0.000 0.000 0.000 0.091 W 0.000 0.000 0.000 0.015 0.017 0.033 0.000 0.000 0.000 0.065 WWW 0.000 0.000 0.000 0.002 0.019 0.036 0.019 0.000 0.000 0.076 i NW 0.000 0.000 0.000 0.001 0.010 0.027 0.068 0.000 0.000- 0.107 NNW 0.000 0.000 0.000 0.002 0.005 0.025 0.010 0.000 0.000 0.041 SueTOTAL 0.000 0.000 0.020 0.086 0.132 0.181 0.097 0.000 0.000 0.515 I
l TOTAL HOURS OF VALID OBSERVATIONS 2029.000 TOTAL HOURS OF GROUND LEVEL RELEASE 191.260 TOTAL HOURS OF STASILITY CLASS C 17.720 TOTAL HOURS OF GROUND LEVEL STASILITY CLASS C 10.450 J
-METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITT BASED ON DELTA T BETWEEN 10.03 AND 45.30 METERS l WIND DIRECTION MEASURED AT 10.42 METER LEVEL WIND SPEED MEASURED AT 10.42 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 19980720 .
I l
NOTE: TOTALS AND susT0TALS ARE 00TAINED FROM UNROUNDED NUMBERS E2-45
f:b SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED ST WINO DIRECTION FOR t
STABILITY CLASS D ( 1.5< DELTA T<= 0.5 C/100 M)
Browns Ferry Nuclear Plant PART 1 0F 2 GROUND LEVEL RELEASE MODE APR 1, 1998 JUN 30, 1998 l
1 WINO WIND SPEED (MPN)
DIRECTION CALM 0.6 1.4 1.5 3.4 3.5-5.4 5.57.4 7.5 12.4 12.5 18.4 18.5 24.4 >=24.5 TOTAL N- 0.000 0.000 0.000 0.021 0.040 0.129 0.000 0.000 0.000 0.190 NNE 0.000 0.000 ').000 0.014 0.048 0.017 0.000 0.000 0.000 0.079 NE 0.000 0.000 0.000 0.034 0.006 0.044 0.000 0.000 0.000 0.086 i ENE 0.000 ' O 000 0.000 0.011 0.008 0.000 0.000 0.000 0.000 0.019 I E 0.000 0.000 0.002 0.028 0.000 0.000 0.000 0.000 0.000 0.030-ESE 0.000 0.000 0.009 0.061 0.107 0.048 0.000 0.000 0.000 0.225 SE 0.000 0.000 0.040 0.039 0.037 0.000 0.000 0.000 0.000- 0.117 SSE 0.000 -0.000 0.061 0.035 0.000 0.000 0.000 0.000 0.000 0.096 5 0.000 0.000 0.107 0.082 0.092 0.048 0.000 0.000 0.000 0.329 SSW 0.000 0.000 0.064 0.120 0.076. 0.059 0.000 0.000 0.000 0.319 SW - 0.000 0.000 0.039 0.03V 0.000 0.000 0.000 0.000 0.000 0.078 WSW 0.000 0.000 0.015 0.148 0.117 0.168 0.000 0.000 0.000 0.448 W 0.000 0.000 0.021 0.070 0.116 0.151 0.039 0.000 0.000 0.398 WWW 0.000 0.000 0.000 0.019 0.035 0.140 0.138 0.000 0.000 0.332 NW 0.000 0.000 0.003 0.003 0.062 0.132 0.237 0.000 0.000 0.437 NWW 0.000 0.000 0.000 0.003 0.024 0.086 0.079 0.000 0.000 0.192 SUBTOTAL 0.000 0.000 0.360 0.731 0.771 1.021 0.493 0.000 0.000 3.376 l l
TOTAL HOURS OF VALID OBSERVAT!0NS 2029.000 TOTAL HOURS OF GROUND LEVEL RELEASE 191.260 TOTAL HOURS OF STABILITY CLASE D 1122.960 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS D 68.490 METEOROLOGICAL. FACILITY: 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 l EFFLUENT VELOCITY = 12.60 M/S f DATE PRINTED: 19980720 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-46
F l
SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR j
{
STABILITY class E ( 0.5< DELTA Tc= 1.5 C/100 M)
L Browns Ferry Nuclear Plant PART 1 0F 2 GROUND LEVEL RELEASE MODE APR 1, 1998 JUN 30, 1998 .
WIND WIND SPEE0(MPM)
DIRECTION CALM 0.6 1.4 1.5-3.4 3.5-5.4 5.57.4 7.5 12.4 12.5 18.4 16.5 24.4 >=24.5 TOTAL
.N ,0.000 0.003 0.005 0.012 0.028 0.000 0.000 0.000 0.000 0.049 NNE 0.000 0.000 0.009 0.042 0.000 0.000 0.020 0.000 0.000 0.071 NE 0.000 0.002 0.002 0,016 0.034 0.000 0.000 0.000 0.000 0.054 ENE 0.000 0.003 0.000 0.008 0.042 0.00 0.000 0.000 0.000 0.053 E 0.000 0.003 0.023 0.041 0.014 0.000 0.000 0.000 0.000 0.081 ESE 0.000 0.002 0.052 0.065 0.067 0.000 0.000 0.000 0.000 0.186 SE 0.000 0.001 0.129 0.067 0.000 0.000 0.000 0.000 0.000 0.197 SSE 0.000 0.007 0.094 0.069 .j 0.000 0.000 0.000 0.000 'O.000 0.170
$ 0.000 0.023 0.220 0.174 0.678 0.147 0.000 0.000 0.000 1.242
$$W 0.000 0.000 0.094 0.070 0.019 0.049 0.000 0.000 0.000 0.233 SW 0.000 0.000 0.016 0.000 0.000 0.049 0.000 0.000 0.000 0.065 WSW 0.000- 0.002 0.069 0.027 0.033 0.054 0.000 0.000 0.000 0.185 W 0.000 0.000 0.037 0.050 0.007 0.009 0.048 0.000 0.000
]
0.151
)
WWW 0.000 0.002 0.011 0.024 0.032 0.018 0.000 0.000 0.000 0.087 j W 0.000 0.000 0.003 0.017 0.017 0.042 0.000 0.049 0.000 0.129 l NW 0.000 0.000 0.023 0.048 0.023' O.017 0.023 0,000 0.000 0.133 l SUBTOTAL- 0.000 0.049 0.757 0.730 0.994 0.385 0.091 0.049 0.000 3.085 I
TOTAL HOURS OF VALID OBSERVATIONS 2029.000 TOTAL HOURS OF GROUND LEVEL RELEASE 191.260 TOTAL HOURS OF STASILITY CLASS E 644.010 TOTAL HOURS OF GROUND LEVEL STASILITY CLASS E 62.590 l
1 I
METEOROLOGICAL FACILITY: Browns Ferry Nucteer Plant-STASILITY SASED ON DELTA T BETWEEN 10.03 AND 45.30 METERS l
WINO DIRECTION MEASURED AT 10.42 METER LEVEL l
WIND SPEE0 MEASURED AT 10.42 METER LEVEL f
EFFLUENT VELOCITY = 12.60 M/S 1 DATE PRINTED: 19980720 NOTE: 10TALS AND SUOT0TALS ARE OBTAINED FROM UNROUNDED NUMBERS l
E2-47 1
g I
l l
SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS F ( 1.5< DELTA Tc= 4.0 C/100 M)
Browns Ferry Nuclear Plant l l
PART.1 0F 2 GROUND LEVEL RELEASE MODE APR 1, 1998 - JUN 30, 1998 WIND- WIND SPEED (MPM) ,
DIRECTION CALM 0.6-1.4 1.5 3.4 3.5 5.4 5.5-7.4 7.5 12.4 12.5 18.4 18.5 24.4 >=24.5 TOTAL N 0.000 0.000 0.034 0.034 0.000 0. uw 0.000 0.000 0.000 0.068 NNE 0.000 0.006 0.023 C.025 0.000 0.000 0.000 0.000 0.000 0.054 NE 0.000 0.005 0.004 0.000 0.000 0.000 0.000 0.000 0.000 0.009 ENE 0.000 0.007 0.008 0.020 0.000 0.000 0.000 0.000 0.000 0.035 E 0.000 0.024 0.018 0.032 0.000 0.000 0.000 0.000 0.000 0.074 ESE 0.000 ' O 018 0.043 0.000 0.000 0.000 0.000 0.000 0.000 0.061 SE 0.000 0.006 0.017 0.000 0.000 0.000 0.000 0.000 0.000 0.024
$$E 0.000 0.020 0.072 0.010 0.000 0.000 0.000 0.000 0.000 0.103
$ 0.000 0.026 0.078 0.047 0.000 0.000 0.000 0.000 0.000 0.151 SSW 0.000 0.007 0.010 0.000 0.000 0.000 0.000 0.000 0.000 0.017 SW 0.000 0.003 0.013 0.000 0.000 0.000 0.000 0.000 0.000 0.016 WSW 0.000 0.000 0.002 0.000 0.000 0.000 0.000 0.000 0.000 0.002
'O. 0.000 0.000 0.003 0.009 0.007 0.000 0.000 0.000 0.000 0.019 WNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NW 0.006 0.003 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.003 NNW 0.000 0.000 0.009 0.018 0.000 0.000 0.000 0.000 0.000 0.027 SUBTOTAL 0.000 0.127 0.336 0.194 0.007 0.000 0.000 0.000 0.000 0.664 TOTAL HOURS OF VALID 00SERVATIONS .
2029.000 TOTAL HOURS OF GROUND LEVEL RELEASE 191.260 TOTAL HOURS OF STABILITY CLASS F 178.620 TOTAL HOURS OF GROUND LEVEL STASILITY CLASS F 13.470 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA T BETWEEN 10.03 AND 45.30 METERS WIND DIRdCTION MEASURED AT 10.42 METER LEVEL l WIND SPEED MEASURED AT 10.42 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 19980720 j NOTE: TOTALS AND SUETOTALS ARE OSTAINED FROM UNROUNDED NUMBERS E2-48
l
[
L l l
SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STASILITY CLASS G (DELTA T > 4.0 C/100 M) l Browns Ferry Nuclear Plant PART 10F 2 GROUND LEVEL RELEASE MODE APR 1, 1998 - JUN 30, 1998 l WIND WIND SPEED (MPH)
DIRECTION CALM 0.6-1.4 1.5 3.4 3.5 5.4 5.5 7.4 7.5 12.4 12.5 18.4 18.5 24.4 >=24.5 TOTAL N 0.000 0.001 0.043 0.014 0.006 0.000 0.000 0.000 0.000 0.067 NNE 0.000 0.000 0.014 0.032 0.000 0.000 0.000 0.000 0.000 0.046 NE 0.000 0.003 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.003 ENE 0.000 0.000 0.007 0.015 0.000 0.000 0.000 0.000 0.000 0.022 E 0.000 0.022 0.001 0.005 0.000 0.000 0.000 0.000 0.000 0.029 ESE 0.000 0.014 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.014 SE 0.000 0.021 0.002 0.000 0.000 0.000 0.000 0.000 0.000 0.023
$$E 0.000 0.025 0.027 0.000 0.000 0.000 0.000 0.000 0.000 0.052 S 0.000 0.000 0.009 0.000 0.000 0.000 0.000 0.000 0.000 0.009
' SSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WSW .0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W 0.000 0.001 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.001 WNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NNW 0.000 0.000 0.006 0.014 0.000 0.000 0.000 0.000 0.000 0.020 SUsTOTAL 0.000 0.088 0.110 0.079 0.008 0.000 0.000 0.000 0.000 0.286 TOTAL HOURS OF VALID OBSERVATIONS 2029.000 TOTAL HOURS OF GROUNO LEVEL RELEASE 191.260 TOTAL HOURS OF STABILITY CLASS G 34.310 TOTAL HOURS OF GROUND LEVEL STASILITY CLASS G 5.810 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA T BETWEEN 10.03 ANO 45.30 METERS WIND DIRECTION MEASURED AT 10.42 METEk LEVEL i WIND SPEED MEASURED AT 10.42 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S f DATE PRINTEO: 19980720 NOTE: TOTALS AND SU5 TOTALS ARE osTA!NED FROM UNROUNDED NUMBERS E2-49
- m. q RadiologicalImpact Assessment Br wns Ferry Nrclear Plant January - December 1998 Table 16 Joint Frequency Distribution in Percent for Split Level Releases (Ground Level Portion)
Third Quarter 1
E2-50
p.
l l
SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND O!RECTION FOR STABILITY CLASS A (DELTA T<=.1.9 C/100 M)
Browns Ferry Nuclear Plant PART 1 0F 2 GROUND LEVEL RELEASE MODE JUL 1. 1998 SEP 30, 1998 WI'3 WINO SPEED (MPH)-
DIRECTION CALM 0.6 1.4 1.5 3.4 3.5 5.4 5.5 7.4 7.5 12.4 12.5 18.4 18.5 24.4 =24.5 TOTAL ,
l N 0.000 0.000 0.000 0.000 0.014 0.077 0.000 0.000 0.000 0.091 NNE 0.000 0.000 - 0.000 0.000 0.005 0.043 0.000 0.000 0.000 0.049 WE 0.000 0.000 0.000 0.000 0.000 0.041 0.000 0.000 0.000 0.041 ENE 0.000 0.000 0.000 0.000 0.000 0.015 0.000 0.000 0.000 0.015 E 0.000 0.000 0.000 0.000 0.000 0.000 ' 0.000 0.000 0.000 0.000 i ESE 0.000 0.000 0.000 0.014 0.000 0.000 0.000 0.000 0.000 0.014 I SE 0.000 0.000 0.007 0.062 0.006 0.000 0.000 0.000 0.000 0.075 l
SSE 0.000 0.000 0.030 0.018 0.000 0.000 0.000 0.000 0.000 0.049 S 0.000 0.000 0.018 0.040 0.000 0.000 0.000 0.000 0.000 0.058 SSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ;
SW 0.000 0.000 0.000 0.001 0.000 0.000 0.000 0.000 0.000 0.001 WSW 0.000 0.000 0.000 0.001 0.004 0.000 0.000 0.000 0.000 0.005 W 0.000 0.000 0.000 0.000 0,004 0.010 0.000 0.000 0.000 0.013 WNW 0.000 0.000 0.000 0.001 0.002 0.006 0.000 0.000 0.000 0.009 0 0.000 0.000 0.000 0.000 0.004 0.045 0.000 0.000 0.000 0.049 N18l 0.000 0.000 0.000 0.000 0.000 0.036 0.010 0.000 0.000 0.046 SU8 TOTAL ~ 0.000 0.000 0.055 0.138 0.038 0.273 0.010 0.000 0.000 0.514 TOTAL HOURS OF VALID OBSERVATIONS 2164.000 TOTAL HOURS OF GROUIC LEVEL RELEASE 98.820 TOTAL HOURS OF STABILI1Y CLASS A 13.040 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS A 11.120 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STCILITY BASED ON DELTA T BETWEEN 10.03 AND 45.30 METERS WI3 DIRECTION MEASURED AT 10.42 METER LEVEL WI:3 SPEED MEASURED AT 10.42 METER LEVEL EFFUENT VELOCITY - 12.60 M/S DATE PRINTED: 19981118 NOTE: TOTALS AND SU8 TOTALS ARE 08TAINED FROM UNROUNDED MUN8ERS E2-51 L .&
i-l.
1 SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS B ( 1.9* DELTA T<= 1.7 C/100 M) l l
Browns Ferry Nuclear Plant l l
PART 1 0F 2 GROUND LEVEL RELEASE MODE l
)
l JUL 1. 1998 SEP 30, 1998 l
l l
WIG WIND SPEED (MPH)
DIRECTION CALM 0.6 1.4 1.5 3.4 3.5 5.4 5.5 7.4 7.5 12.4 -12.5 18.4 18.5 24.4 ~24.5 TOTAL N 0.000 0.000 0.000 0.000 0.020 0.047 0.000 0.000 0.000 0.067 NNE 0.000 0.000 0.000 0.001 0.014 0.012 0.000 0.000 0.000 0.028 NE 0.000 0.000 L.000 0.000 0.005 0.016 0.000 0.000 0.000 0.021
'ENE 0.000 0.000 0.000 .0.000 0.004 0.000 0.000 0.000 0.000 0.004 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000
.ESE 0.000 '0.000 0.000 0.012 0.011 0.000 0.000 '0.000 0.000 0.022 SE 0.000 0.000 0.000 0.005 0.000 0.000 0.000 0.000 0.000 0.005
$$E 0.000 0.000 0.001 0.005 0.000 0.000 0.000 0.000 0.000 0.006 1 5* 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 l SSW 0.000 0.000 0.000 0.003 0.000 0.000 0.000 0.000 0.000 0.004 SW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WSW 0.000 0.000 0.000 0.007 0.010 0.000 0.000 0.000 0.000 0.017 W 0.000 0.000 0.000 0.006 0.012 0.000 0.000 0.000 0.000 0.018 WW 0.000 0.000 0.000 0.000 0.013 0.013 0.000 0.000 0.000 0.026 NW 0.000 0.000 0.000 0.000 0.013 0.038 0.009 0.000 0.000 0.061 NNW 0.000 0.000 0.000 0.000 0.010 0.006 0.000 0.000 0.000 0.016
$UBTOTAL 0.000 0.000 0.001 0.039 0.111 0.133 0.009 0.000 0.000 0.293 l
l TOTAL HOURS OF VALID OBSERVATIONS 2164,000 TOTAL HOURS OF GROUND LEVEL RELEASE 98.820 l 1
TOTAL HOURS OF STABILITY CLASS 8 8.100 TOTAL HOURS OF GROU W LEVEL STABILITY CtASS 8 6.350 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA T KTWEEN 10.03 AND 45.30 METERS j WIND DIRECTION MEASURED AT 10.42 METER LEVEL l WIND SPEED MEASURED AT 10.42 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S - l DATE PRINED: 19981118 l
NOTE: TOTALS AND SUBTOTALS ARE DETAINED FRGH UNROUNDED NUMBERS l E2-52
lI l I
i
(- SPLIT JOINT PERCENTA0E FREQUENCIES OF WIND SPEED BY WINO DIRECTION FOR STABILITY CLASS C (.1.7< DELTA T = 1.5 C/100 M)
- l. Browns Ferry Nuclear Plant PART 1 0F 2 GROUNO LEVEL RELEASE MODE JUL 1. 1998 SEP 30. 1998 WIG ~ WIND SPEED (MPH)
DIRECTION CALM 0.6 1.4 1.5 3.4 3.5 5.4 5.5 7.4 7.5 12.4 12.5 18.4 18.5 24.4 =24.5 TOTAL l
N 0.000 0.000: 0.000 0.001 0.029 0.059 0.000 0.000 0.000 0.080 NNE 0.000 0.000 0.000 0.001 0.022 0.000 0.000 0.000 0.000 0.024 NE 0.000 - 0.000 0.000 0.000 0.018 0.013 0.000 0.000 0.000 0.031 ENE 0.000 0.000 0.000 0.000 0.000 0.006 0.000 0.000 0.000 0.006 l E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.005 0.008 0.000 0.000 0.000 0.00'0 0.013 SE 0.000 0.000 0.007 0.022 0.000 0.000 0.000 0.000 0.000 0.029
.SSE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.003 S 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SSW - 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SW 0.000: 0.000 0.000 . 0.003 0.000 0.000 0.000 0.000 0.000 0.003 WSW 0.000 0.000 0.000 0.007 0.006 0.000' O.000 0.000 0.000 0.012 W 0.000 0.000 0.000 0.005 0.007 0.000 0.000 0.000 0.000 0.012 WW 0.000 0.000 0.000 0.003 0.012 0.008 ~0.000 0.000 0.000 0.023 W 0.000 0.000 0.000 0.003 0.003 0.012 0.000 0.000 0.000 0.018 NW 0.000 0.000 0.000 0.000 0.014 0.020 0.000 0.000 0.000 0.034 ,
SU8 TOTAL 0.000 0.000 0.007 0.050 0.110 0.119 0.000 0.000 0.000 0.286 l
TOTAL HOURS OF VALID OBSERVATIONS .7164,000 l TOTAL HOURS OF GROUND LEVEL RELEASE '98.820 :
TO'TAL HOURS OF STABILITY CLASS C 33.890 TOTAL HOURS OF GROU W LEVEL STABILITY CLASS C 6.180 NETEOROLOGICAL FACILITY: Brauns Ferry Nuclear Plant STABILITY BASED ON DELTA.T GETWEEN 10.03 AND 45.30 METERS WIND DIRECTION MEASURED AT. 10.42 METER LEVEL WIND SPEED NEASURED AT 10.42 METER LEVEL EFFLUENT VELOCI1Y = 12.60 N/S DATE PRIKTED: 19981118 l l l . NOTE: TOTALS AND SU8 TOTALS ARE 08TAllED FROM UNROUNDED NUMBERS E2-53 1 i
l
SPLIT J0! E PERCE NAGE FREQUENCIES OF WI M $ PEED BY WIND DIRECTION FOR STABILITY CLASS D ( 1.54 DELTA T= 0.5 C/100 M)
Browns Ferry Nuclear Plant PART 10F 2 GROUND LEVEL RELEASE MODE JUL 1. 1998 SEP 30.-1998 Wi"3 WIN SPEED (MFh)
DIRECTION' CALM 0.6 1.4 1.5 3.4 3.5 5.4 5.5 7.4 7.5 12.4 12.5 18.4 18.5 24.4 =24.5 TOTAL
'N 0.000 0.000 0.000. 0.014 0.052 0,027 0.000 0.000 0.000 0.093 a NNE 0.000 0.000 0.000 0.013 0.032 0.014 0.000 0.000 0.000 0.060 E 0.000 0.000 0.000 -0.018 0.049 0.006 0.000 0.000 0.000 0.073
{
EE 0.000 0.000- 0.000 0.004 0.019 0.013 0.000 0.000 0.000 0.036 I E 0.000 0.000 0.000- 0.074 0.036 0.000 0.000 0.000 0.000 0.110.
ESE 0.000 - 0.000 0.001 0.133 0.025 0.000' O.000 0.000 -0.000 0.129 ~ )
- SE 0.000 0.000' O.022 0.006- 0.009 0.000 0.000 0.000 0.000 0.037 l SSE 0.000 0.000 0.007 0.000 0.000 0.000 0.000 0.000 0.000 0.007 5 0.000 0.001 0.041 0.003 0.000 D.000 0.000 0.000 0.000 0.045 -
$$W 0.000 0.000 0.002 0.000 0.000 0.000 0.000- 0.000 0.000 0.002 I SW 0.000 0.000 0.014 0.006 0.000 0.000 0.000 0.000 0.000 .0.019 WSW 0.000 0.000 0.010 0.018 ~0.000 0.000 0.000 0.000 0.000 0.028 W 0.000 0.000. 0.001 0.039 0.082 0.020 0.000 0.000 0.000 0.142 WIAd 0.000 0.000 0.002 0.012 0.041 0.028 0.000 -0.000 0.000 0.083 led 0.000 0.000 0.000' O.005 0.039 0.028 0.000 0.000 0.000 0.073 lati ,0.00G 0.000 0.000 0.006 ~0.031 0.015 0.024 0.000 0.000 0.076 ,
SU5 TOTAL 0.000 0.001 0.101 0.320 0.415 0.152 0.024 0.000 0.000 1.014 I
l TOTAL HOURS OF VALID OBSERVATIONS 2164.000 TOTAL HOURS OF GROU W LEVEL RELEASE 98.820 TOTAL HOURS OF STABILITY CLASS D 1136.220 TOTAL HOURS OF W OU W LEVEL STABILITY CLASS D 21.940 METEOROLOGICAL FACILITY: Brauns Ferry lluclear Plant STABILITY BASED ON DELTA T BETWEEN 10.03 Ale 45.30 ETER$
. WIM DIRECT 10ll IEASURED AT 10.42 ETER LEVEL Wi e SPEED E ASURED AT 10.42 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 19981118 NOTE: TOTALS AND SUBT0TALS ARE OBTAIED FRON UNROUWED NUMBERS E2-54
m ;1 1
i b {
1
!' SPLIT JOINT PERCENTAGE FREQUENCIES OF WI S SPELO SY WIND DIRECTION FOR l-t i.
L- STASILITY CLASS E (.0.5< DELTA T*= 1.5 C/100 M) l.
Srowns Ferry Nuclear Plant PART 1 0F 2 GROUND LEVEL RELEASE N00E l JUL' 1, 1998 SEP 30. 1998
-WIND- ,WI N SPEED (NPH)
! DIRECTION' CALM 'O.6 1.4 1.5 3.4' 3.5 5.4- 5.5 7.4 7.5 12.4 12.5 18.4 18.5 24.4 ==24.5 TOTAL
'N 0.000 0.000 0.029 0.091 0.020 :0.008 0.000 0.000 0.000 9.149 NNE 0.000 0.000 0.016 0.098 0.060 0.000 0.000 -0.000 'O.000 0.173 NE 0.000 0.000. 0.006 0.037 0.052 0.034 0.000 0.000 0.000 0.134 q ENE 0.000 0.000 0.021 0.067 0.000 0.000 0.000 0.000 0.000 ~ 0.008 l 1- E 0.000 0.000 - 0.056 - 0.172 0.019 0.000 -0.000 0.000 0.000 0.244 I ESE' O.000 0.000 , 0.050 0.038 0.023' 0'.000 0.000 0.000' O.000 0.111 !
i SE- 0.000 0.000 0.117 0,020 0.000 0.000 0.000 0.000 0.000 0.138 SSE 0.000 0.000 0.057 0.000 0.000 0.000 0.000 0.000 0.000 0.057 l
5 0.000 0.001 0.023 0.000 0.000 0.000 0.000 0.000 0.000 0.024 l SSW 0.000 0.000 0.026 0.000 .0.000 ; 0.000 0.000 ' O.000 - 0.000 0.026 l' 1 SW - 0.000 0.000 .0.002 0.000 0.000 0.000 0.000- 0.000 0.000 0.002 WSW 0.000 0.000 0.021 9.018 ' O.000 - 0.000 0.000 0.000 0.000 0.039
- W -~ 0.000 0.000 0.001 'O.025 0.011 0.000 0.000 0.000 0.000 0.037 IA8d 0.000 0.000 0.000 -0.003 'O.000 0 008 0.000 0.000 - 0.000. 0.012
, . lei . 0.000 _0.000 0.001 0.002 0.000 .0.000 0.000 0.000 0.000. 0.003 IN8f 0.000 0.000 0,023 0.027 -~0.000 0.000 0.000 0.000 0.000 0.049 .
SUBTUTAL 0.000 0.001. 0.444 0.599 0.184 0.055 0.000 0.000 '0.000 1.288 l
l TOTAL HOURS OF VALID OSSERVATIONS 2164.000 TOTAL HOURS OF GROUS LEVEL ELEASE 98.420 j l' - TUTAL HOURS OF STASILITY L1 ASS E 707.000 l- TOTAL HOURS OF WOUW LEVEL STASILITY CLASS E 27.870 !
\,
MTEOROLOSICAL FACILITY: 'Growns Ferry Nuclear Plant STASILITY GASED ON DELTA T GETWEN 10.03 AS 45.30 ETERS WID DIRECTION IEASUREJ AT 10.42 ETER LEVEL
- WI O SPEED E ASURED AT 10.42 Ig!TER LEVEL EFFLUENT VELOCITY = 12.60 M/S '
DATE PRINTED: 19981118 NOTE: ' TOTALS AS SUBTUTALS ARE OSTAIES FROM UNROUNDEO NUNGERS E2-55
+-
[U
7 SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS F ( 1.54 DELTA T<= 4.0 C/100 M)
Browns Ferry Nuclear Plant PART 1 0F 2 GROUND LEVEL RELEASE MODE
-JUL 1, 1998 SEP 30. 1998 WIO WIND SPEED (MPH)
DIRECTION CALM 0.6 1.4 1.5 3.4 3.5 5.4 5.5 7.4 7.5 12.4 12.5 18.4 18.5 24.4 ~24.5 TOTAL N 0.000 0.000 0.083 0.093 0.008 0.000 0.000 0.000 0.000 0.184 NNE 0.000 0.000 0.063 0.109 0.024 0.000 0.000 0.000 0.000 0.196 NE 0.000 0.000 0.021 0.072 'O.024 0.018 0.000 0.000 0.000 0.135 ,
ENE 0.000 0.000 0.027 0.047 0.005 0.000 0.000 0.000 0.000 0.079 E 0.000 0.000 0.049 0.057 0.000 0.000 0.000 0.000 0.000 0.106 i ESE 0.000 0.000 0.027 0.000 0.000 0.000 0.000 0.000 0.000 0.027 SE - 0.000 0.000 0.005 0.000 0.000 0.000 0.000 ' O.000 0.000 0.005 SSE 0.000 0.006 0.008 0.000 0.000 0.000 0.000 0.000 0.000 0.014 5 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SW 0.000 0.000 0.001 0.000 0.000 0.000 0.000 0.000 0.000 0.001 WSW 0.000 0.000_ 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 l
W 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 i M 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 C! 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 )
M 0.000 0.000 0.019 0.012 0.000 0.000 0.000 0.000 0.000 0.031 SUBTDTAL 0.000 0.006 0.304 0.390 0.061 0.018 0.000 0.000 0.000 0.780 1
I l
TOTAL HOURS OF VALID OBSERVATIONS 2164.000 TOTAL HOURS OF GROUND LEVEL RELEASE 98.820 TOTAL HOURS OF STABILITY CLASS F 210.810 i TOTAL HOURS OF GROUND LEVEL STABILITY CLASS F 16.870 l
METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA T BETWEEN 10.03 AND '45.30 METERS WIND OIRECTION MEASURED AT 10.42 METER LEVEL WIND SPEED MEASURED AT 10.42 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 19981118 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-56
1=
SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS G (DELTA T = 4.0 C/100 M)
Browns Ferry Nuclear Plant PART 1 0F 2 GROUND LEVEL RELEASE M0DE JUL 1. 1998 . SEP 30, 1998 WINO WIND SPEED (NPH)
DIRfCTION CALM 0.6 1.4 1.5 3.4' 3.5 5.4 5.5 7.4 7.5 12.4 12.5 18.4 18.5 24.4 >=24.5 TOTAL
~
l N 0.000 0.000 - 0.107 0.057 0.000 0.000 0.000 0.000 0.000 0.164 NNE 0.000 0.000 0.089 0.064 0.000 0.000 0.000 0.000 0.000 0.153 NE 0.000 0.000 0.018 0.018 0.000 0.000 0.000 0.000 0.000 0.035 ENE 0.000 0.000 0.009 0.010 0.000 0.000 0.000 0.000 0.000 0.019 E 0.000 0.000 0.002 0.000 0.000 0.000 0.000 0.000 0.000 0.002 ESE- --0.000 0.000 ' O.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SSE 0.000 0.000 0.002 0.000 0.000 0.000 0.000 0.000 0.000 0.002
' S' O.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SW 0.000 0.000 0.000 0.000 ' O 000 0.000 0.000 0.000 0.000 0.000 WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000
'W- 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W18f 0.000 0.000 0.000 0.000 0.000 0.000- 0.000 0.000- - 0.000 0.000 0 0.000 - 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 N18i 0.000 0.000 0.011 0.006 0.000 0.000 0.000 0.000 0.000 0.017 SUBTOTAL 0.000 0.000 0.237 0.155 0.000 0.000 0.000 0.000 0.000 0.392 TOTAL HOURS OF VALID OBSERVATIONS 2164.000 TOTAL HOURS OF GROUND LEVEL RELEASE 9f.820 TOTAL HOURS OF STABILITY CLASS S 54.860 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS 6 8.490 METEOR 0LO3ICAL FACILITY: - Browns Ferry Nuclear Plant STABILITY BASED ON DELTA.T BE1 WEEN 10.03 AND 45.30 METERS WIND DIRECTION MEASURED AT 10.42 E TER LEVEL
. WIND SPEED MEASURED AT 10.42 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 19981118 NOTE: TOTALS AND SUOTOTALS ARE OSTAINED FROM UNROUNDED NUNDERS E2-57
F- 1 Radi:logicalImpact Assessment Br:wns Ferry Nuclear Plant l
. January - December 1998 l l
Table 17 Joint Frequency Distribution in Percent -
for Split Level Releases (Ground Level Portion)
Fourth Quarter i
1 l
1 i
0 1
1 E2 58 l
. SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS A (DELTA T<= 1.9 C/100 M)
Brtwns Ferry Nuclear Plant PART 1 0F 2 GROUND LEVEL RELEASE MODE
'OCT 1, 1998 DEC 31, 1998 !
WIND - WIND SPEED (MPH)
DIRECTION- CALM 0.6 1.4 1.5 3.4 3.5 5.4 5.5 7.4 7.5 12.4 12.5 18.4 18.5 24.4 >=24.5 TOTAL N 0.000 0.000 0.000 0.000 0.009 0.085 0.010 0.000 0.000 0.104 NNE 0.000 0.000 0.000 0.000 0.003 0.164 0.039 0.000 0.000 0.207 G. 0.000 0.000 0.000 0.000 0.000 0.030 0.018 0.000 0.000 0.048 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.014 0.000 0.000 0.000 0.000 0.000 0.014 SE 0.000 0.000' O.001 0.067 0.000 0.000 0.000 0.000 0.000 0.068 SSE- 0.000 0.000 0.015 0.095 0.000 0.000 0.000 0.000 0.000 0.110 5 0.000 0.000 0.002 0.046 0.009 0.000 0.000 0.000 0.000 0.057 SSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000.
SW 'O.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000
'W - 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WWW .- 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NWW 0.000 0.000 0.000 0.000 0.000 0.007 0.000 0.000 0.000 0.007 0.018 0.020 0.286 0.067 0.000 0.000 0.614
-SUBTOTAL 0.000 0.000 0.223 TOTAL HOURS OF VALID OBSERVATIONS 2105.000 TOTAL HOURS OF GROUND LEVEL RELEASE 201.400 TOTAL HOURS OF STABILITY CLASS A 12.930 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS A 12.930
-METEOROLOGICAL FACILITY: Browns Ferry Nucteer Plant STABILITY BASED ON DELTA T BETWEEN 10.03 AND 45.30 METERS WIND DIRECTION MASURED AT 10.42 METER LEVEL WIND SPEED MEASURED AT 10.42 METER LEVEL
. EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 19990209 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2 59 1
7 r
SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS S ( 1.9< DELTA T<= 1.7 C/100 M)
Browns Ferry Nucteer Plant PART 1 0F 2 GROUND LEVEL RELEASE MODE OCT 1, 1998 - DEC 31, 1974 WINO WIND SPEED (MPH)
DIRECTION CALM 0.6 1.4 1.5 3.4 3.5 5.4 5.5 7.4 7.5 12.4 12.5 18.4 18.5 24.4 >=24.5 TOTAL N 0.000 0.000 0.000 0.000 0.015 0.028 0.000 0.000 0.000 0.043 NME 0.000' O.000 0.000 0.000 0.008 0.023 0.000 0.000 0.000 0.031
. NE 0.000 0.000 0.000 0.000 0.000 0.029 0.009 0.000 0.000 0.038 ENE 1000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 )
ESE 0.000 0.000 0.000 0.005 0.000 0.000 0.000 0.000 0.000 0.005 i SE 0.000 0.000 0.008 0.001 0.000 0.000 0.000 0.000 0.000 0.009 SSE 0.000 0.000 0.007 0.019 0.000 0.000 0.000 0.000 0.000 0.026 I S -0.000 - 0.000 0.000 0.010 0.009 0.000 0.000 0.000 0.000 0.019 SSW C.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 >
SW 0.000 0.000 0.000 0.006 0.000 0.000 0.000 0.000 0.000 0.006 WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W ' O.000 - 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WWW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NW 0.000 0.000 0.000 0.000 0.005 0.012 0.000 0.000 0.000 0.017 NNW 0.000 0.000- 0.000 0.000 0.000 0.006 0.000 0.000 0.000 0.006 SUOTOTAL 0.000 0.000 0.015 0.041 0.037 0.097 0.009 0.000 0.000 0.199 1
TOTAL HOURS OF VALID OBSERVATIONS 2105.000 TOTAL HOURS OF GROUND LEVEL RELEASE 201.400 TOTAL HOURS OF STABILITY CLASS B 7.090 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS B 4.180 .
METEOROLOGICAL FACILITY: Browns Ferry Nucteer 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: 19990209 WOTE:' TOTALS AND SUBTOTALS ARE OSTAINED FROM UNROUNDED NUMBERS E2-60
SPLIT JOINT. PERCENTAGE FREQUENCIES OF WI S SPEED BY W!niD DIREC710N FOR STABILITY CLASS C '( 1.7< DELTA T<= 1.5 C/100 M)
Brtwns Ferry Nuclear Plant t
PART 1 0F 2 GROUND LEVEL RELEASE MODE OCT 1, 1998 DEC 31, 1998 WIN WI W SPEED (MPN)
DIRECTION CALM- 0.6-1.4 1.5 3.4 3.5 5.4 5.5 7.4 7.5 12.4 12.5 18.4 18.5 24.4 >=24.5 TOTAL N 0.000 0.000 0.000 0.000 0.008 0.030 0.000 0.000 0.000 0.038 NNE 0.000 0.000 0.000 0.001 0.023 0.016 0.000 0.000 0.000 0.040 NE - 0.000 0.000 0.000 0.000 0.025 0.009 0.000 0.000 0.000 0.034 ENE 0.000 0.000 0.000 0.001 0.000- 0.000 0.000 0.000 0.000 0.001 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.006 0.000 0.000 0.000 0.000 '0.000 0.006
. SE U.000 ^ 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SSE 0.000 0.000 0.000 0.024 0.000 0.000 0.000 0.000 0.000 0.024 S 0.000 0.000 0.000 0.008 0.009 0.000 0.000 0.000 0.000- 0.017 i SSW 0.000 'O.000 0.000 0.000- 0.000 0.000 0.000 0.000 0.000 0.000 SW 0.000 .0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WSW 0.000 'O.000 0.000 0.000 0.009 0.000 0.000 0.000- 0.000 0.009 W 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WNW 0.000 0.000 -0.000 0.000- 0.000 0.000 0.000 0.000 0.000 0.000 MW 0.000 0.000 0.000 0.000 0.003 0.040 0.011 0.000 0.000 0.055 NNW- 0.000 0.000 0.000 0.000 0.023 0.043 0.000 0.000 0.000 0.066 SUBTOTAL 0.000 0.000 0.000 0.040 0.100 0.138 0.011 0.000 0.000 0.290
- TOTAL NOURS OF VALID OBSERVATIONS 2105.000-TOTAL HOURS OF GROUND LEVEL RELEASE '201.400
. TOTAL NOURS OF STABILITY CLASS C 18.470 TOTAL NOURE OF GROUND, LEVEL STASILITY CLASS C 6.110 .
METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA T BETWEEN 10.03 Am 45.30 METERS Wi m DIRECTION M ASURED AT 10.42 METER LEVEL W!W SPEED MEASURED AT : 10.42 MTER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 19990209 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-61
l SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WINO DIRECTION FOR STAE!LITY CLASS D (*1.54 DELTA T<= 0.5 C/100 M)
Browns Ferry Nuclear Plant PART 1 0F 2 GROUND LEVEL RELEASE MODE OCT 1, 1998 DEC 31, 1998 WINO WIND SPEED (MPH)
DIRECTION CALM 0.6 1.4 1.5 3.4 3.5 5.4 5.5 7.4 7.5 12.4 12.5 18.4 18.5 24.4 . >=24.5 TOTAL N 0.000 0.000 0.000 0.047 0.172 0.246 0.054 0.000 0.000 0.519 NNE 0.000 0.000 0.000 0.019 0.105 0.119 0.000 0.000 0.000 0.244 NE 0.000 0.000 0.000 0.015 0,043 0.062 0.000 0.000 0.000 0.120 ENE 0.000 0.000 0.000 0.019 0.017 0.000 0.000 0.000 0.000 0.035 E 0.000 0.000 0.004 0.019 0.033 0.000 0.000 0.000 0.000 0.057 ESE 0.000 0.000 0.007 0.048 0.015 0.000 0.000 0.000 0.000 0.069 SE 0.000 0.000' O.041 0.171 0.051 0.000 0.000 0.000 0.000 0.264 SSE 0.000 0.000 0.0 73 0.362 0.000 0.000 0.000 0.000 ,0.000 0.435 S 0.000 0.000 0.090 0.107 0.010 0.000 0.000 0.000 0.000 0.207 SSW 0.000 0.000 0.000 0.048 0.000 0.000 0.000 0.000 0.000 0.048 SW 0.000 0.000 0.000 0.032 0.000 0.000 0.000 0.000 0.000 0.032 WSW 0.000 0.000 0.006 0.034 0.021 0.019 0.000 0.000 0.000 0.079 W 0.000 0.000 0.000 0.030 0.059 0.029 0.000 0.000 0.000 0.119 WNW 0.000 0.000 0.000 0.006 0.006 0.078 0.010 0.000 0.000 0.099 NW 0.000 0.000 0.000 0.007 0.046 0.208 0.088 0.033 0.000 0.381 NNW 0.000 0.000 0.000 0.036 0.062 0.267 0.123 0.038 0.000 0.526 SUBTOTAL 0.000 0.000 0.222 1.001 0.640 1.028 0.274 0.0 72 0.000 3.236 TOTAL HOURS OF VALID OBSERVATIONS 2105.000 TOTAL HOURS OF GROUND LEVEL RELEASE 201.400 TOTAL HOURS OF STABILITY CLASS D 1060.780 TOTAL HOURS OF GROUND LEVEL STASILITY CLASS D 68.120 .
METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY SASED ON DELTA T BETWEEN 10.03 AND 45.30 METERS WIND DIRECi!0N MEASURED AT 10.42 METER LEVEL
- WIND SPEED MEASURED AT 10.42 METER LEVEL EFFLUENT VELOCITV = 12.60 M/S DATE PRINTED: 19990209 NOTE: TOTALS AND SUST0TALS ARE OBTAINED FROM UNROUNDED NUMBERS E2 62
l l ' SPLif JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR l
l STABILITY CLASS E ( 0.5< DELTA T<= 1.5 C/100 M) l l
Browns Ferry Nuclear Plant PART 1 0F 2 GROUNO LEVEL RELEASE MODE OCT 1, 1998 DEC 31, 1998 t
WIND WIND SPEED (MPM)
DIRECTION CALM- 0.6 1.4 1.5 3.4 3.5 5.4 5.57.4 7.5 12.4 '12.5 18.4 18.5 24.4 >=24.5 TOTAL l
l' N 0.000 0.000 0.018 0.093 0.060 0.029 0.000 0.000 0.000- 0.200 l NNE 0.000 0.000 0.010 0.037 0.056 0.046 0.000 0.000 0.000 0.148 l NE 0.000 0.000 0.006 0.044 0.044 0.016 0.000 0.000 0.000 0.109 l ENE 0.000 0.000 0.012 0.005 0.014 0.006 0.000 0.000 0.000 0.039 E 0.000 0.006 0.006 0.040 0.013 0.000 0.000 0.000 0.000 0.066-ESE 0.000 0.001 0.061 0.091 0.000 'O.000 0.000 0.000 0.000 0.152
- SE . 0.000 0.001 0.114 0.124 0.054 0.000 0.000 0.000 0.000 0.293 l l
SSE 0.000 0.008 0.180 0.225 0.250 0.048 0.000 0.000 0.000 0.709 l S 0.000 . 0.000 0.063 0.200 0.428 0.133 0.000 0.000 0.000 0.824 SSW 0.000 0.000- b.019 0.048 0.000 0.000 0.000 0.000 0.000 0.067 SW 0.000 0.000 0.019 0.019 0.000 0.000 0.000 0.000 0.000 0.03G WSW 0.000 0.000 0.001 0.023 0.016 .0.000 0.000 0.000 0.000 0.040 W 0.000 0.000 0.004 0.004 0.000 0.000 0.000 0.000 0.000 0.008 WNW 0.000 0.000 0.001 0.005 0.018 0.008 0.000 0.000 0.000 0.032 NW 0.000 0.000 0.001 0.015 0.006 0.034 0.032 0.000 0.000 0.088 NNW 0.000 0.000 0.005 0.066 0.075 0.026 0.010 0.000 0.000 0.181 SUBTOTAL 0.000.- 0.016 0.518 1.038 1.033 0.347 0.042 0.000 0.000 2.995 TOTAL NOURS OF VALID 00$ERVAfl0NS ,
2105.000 TOTAL HOURS OF GROUND LEVEL RELEASE 201.400 TOTAL HOURS OF STASILITY CLASS E 625.640 TOTAL NOURS OF GROUND LEVEL STABILITY CLASS E 63.050 -
METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STASILITY BASED ON DELTA T DETWEEN 10.03 AND 45.30 METERS WIND DIRECTION MEASURED AT .10.42 METER LEVEL j WIND SPEED MEASURED AT 10.42 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 19990209 NOTE: TOTALS AIC SUST0TALS ARE OSTAINED FROM UNROUNDED NUMBERS
( E2 63
SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECVION FOR STA81LITY CLASS F '( 1.5< DELTA T<= 4.0 C/100 M)
Browns Ferry Nuclear Plant PART 1 0F 2 GROUND LEVEL RELEASE MODE OCT 1, 1998 - DEC 31, 1998 WIND WIND SPEED (MPN)
DIRECTION CALM 0.6-1.4- 1.5 3.4 - 3.5 5.4 5.5 7 '. 7.5 12.4 12.5 18.4 18.5 24.4 >=24.5 TOTAL N 0.000 0.000 0.088 0.140 0.038 0.010 0.000 0.000 0.000 0.276 NNE 0.000 . 0.000 0.026 0.171 0.091 0.000 0.000 0.000 0.000 0.288 NE 0.000 0.000 0.011 0.019 0.016 0.000 0.000 0.000 0.000 0.046 ENE 0.000 0.001 0.019 0.031 0.000 0.000 0.000 0.000 0.000 0.051 E 0.000 0.003 0.033 0.032 0.000 0.000 0.000 0.000 0.000 0.068 ESE 0.000 0.000 0.048 0.005 0.000 0.000 0.000 0.000 0.000 0.053 SE 0.000 0.015 0.047 0.015 0.000 0.000 0.000 0.000 0.000 0.077
$$E 0.000 0.029 0.101 0.031 0.015 0.000 0.000 0.000 0.000 0.177 3 0.000 0.014 0.047 0.061 0.086 0.019 0.000 0.000 0.000 0.227 SSW 0.000 0.000 0.005 0.000 0.000 0.010 0.000 0.000 0.000 0.015 SW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WSW 0.000 0.001 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.001 W 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NW 0.000 0.000 0.007 0.006 0.000 0.000 0.000 0.000 0.000 0.012 NNW 0.000 0.000 0.035 0.045 0.008 0.000 0.000 0.000 0.000 0.088
$USTOTAL 0.000 0.064 0.467 0.556 0.254 0.038 0.000 0.000 0.000 1.380 TOTAL HOURS OF VALID OBSERVATIONS 2105.000 TOTAL HOURS OF GROUND LEVEL RELEASE 201.400
TOTAL HOURS OF STA51LITY CLASS F 231.550 TOTAL HOURS OF GROUND LEVEL STASILITY CLASS F 29.040 -
METEOROLOGICAL FACILITY:. Browns Ferry Nuclear Plant STABILITY BASED ON DELTA T SETWEEN 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: 19990209 NOTE: TOTALS AND SUBTOTALS ARE OSTAINED FROM UNROUNDED NUMBERS E2-64
x r
. SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WINO DIRECTION FOR STABILITY CLASS G . (DELTA T > 4.0 C/100 M)
Browns Ferry Nuclear Plant PART 1 0F 2 GROUND LEVEL RELEASE MODE
- q. OCT 1, 1996 DEC 31, 1998 WIN
- WIND SPEED (MPN)
DIRECTION CALM . 0.6 1.4' 1.5 3.4 3.5 5.4 5.5 7.4 ~7.5 12.4 12.5 18.4 18.5 24.4 .-24. 5 TOTAL N 0.000 0.004 0.115 0.047' O.000 0.000 0.000 0.000 0.000 0.166
~ NNE 0.000 0.004 0.038 0.092 0.000 0.000 0.000 0.000 0.000 0.134
' NE ' O.000 ' O.000 0.039 0.013 0.000 0.000 0.000 0.000 0.000 0.052 ENE 'O.000 0.017 0.021~ 0.041 0.000 0.000 0.000 0.000 0.000 0.079
-E 0.000 0.000 0.014 0.009 0.000 0.000 0.000 0.000 0.000 0.022
' E8E 0.000 0.007 0.013 0.000 0.000 0.000 0.000 0.000 0.000 0.019
.SE 0.000 0.000 0.018 0.010 0.000- 0.000 0.000 0.000 0.000 0.028 0.047 SSE 0.000 0.190 . 0.018 0.000 0.000 0.000 0.000 0.000 0.255 s 0.000 0.000 0.014 0.026 0.000: 0.000 0.000 0.000 0.000 0.048 SSW 0.000 0.000- 0.001 0.000 0.000 0.000 0.000 0.000 0.000 0.001
' SW O.000 0.000 0.000 0.000 0.000 0.000' O.000 0.000 0.000 0.000
- WsW 0.000 0.000 0.000 0.000 0.000' O.000 0.000 0.000 0.000 0.000
'W 0.000 - 0.000 0.000 0.000 0.000 0.000 0.000 'O.000 0.000 0.000 WNW 0.000 0.000- 0.000 0.000 0.000 'O.000 0.000 0.000 0.000 0.000 MW 0.000 0.000 0.000 . 0.000 = 0.000 .0.000 0.000 0.000 0.000 0.000 NNW 0.000 0.005 0.032 0.012 0.000 0.000 <0.000 0.000 0.000 0.050 i' ~
- - SUBTOTAL [0.000 0.092 0.495 0.267 0.000 0.000 0.000 0.000 0.000 0.854 TOTAL'MOUR$ OF VALID OBSERVATIOut 2105.000
, TOTAL NOURS OF GROUND LEVEL RELEASE 201.400
, TOTAL- NOURS OF STABILITY class G - 148.540 TOTAL' HOURS OF 0ROUND LEVEL' STABILITY class G 17.970 -
METEOROLOGICAL FACILITY: Browns Ferry Nucteer Plant ,
l l ~ STABILITY EASED ON DELTA T BETWEEN. 10.03 AND 45.30 METERS j WIND DIRECTION MEASURED AT' 10.42 METER LEVEL
' WIND SPEED MEASURED AT 10.42 METER LEVEL nEFFLUENT VELOCITY = 12.60 N/s DATE PRINTED: 19990209
. NOTE: TOTALS AND SUBTOTALS ARE OSTA!NED FROM UNROUNDED NUMBERS 6 E2-65 t
FE RadiologicalImpact Assessment l
Br:wns Ferry Nuclear Plant January - December 1998 Table 18 Joint Frequency Distnhtion in Percent for Split Level Releases (Elevated LevelPortion)
First Quarter l
O i
E2-66
SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WINO DIRECTION FOR STA51LITY CLASS A (DELTA T<= 1.9 C/100 M)
Brouns Ferry Nucteer Plant PART 2 0F 2 ELEVATED RELEASE MODE JAN 1, 96 - MAR 31, 96 WIND WIND SPEED (MPN)
DIRECTION CALM 0.6-1.4 1.5 3.4 3.5 5.4 5.5 7.4 7.5 12.4 12.5 18.4 18.5 24.4 >=24.5 TOTAL N 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NME 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SSE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 S 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SUBTOTAL 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 TOTAL HOURS OF VALIO OBSERVAT!0NS 2115.000 TOTAL NOURS OF ELEVATED RELEASES 1814.370 TOTAL HOURS OF STABILITY CLAS$ A 6.710 TOTAL HOURS OF ELEVATED STABILITY CLAS$ A 0.000 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA T SETWEEN 45.30 AND 89.59 METERS WIND DIRECTION MEASURED AT 45.67 METER LEVEL WIND SPEED MEASURED AT 45.67 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 24 Apr 98 NOTE: TOTALS AND SL4 TOTALS ARE QSTAINED FROM UNROUNDED NUMBERS E2-67
SPLIT JOINT PERCENTAGE FREQUENCIES OF WIW SPEED BY WIW DIRECTION FOR l STABILITY CLASS B' (*1.9< DELTA T<= 1.7 C/100 M)
Browns Ferry Nucteer Plant PART 2 0F 2 ELEVATED RELEASE NIBE J
JAN 1, 98 - MAR 31, 98 WIN WIND SPEED (MPM) l DIRECTION CALM 0.6 1.4 1.5 3.4 3.5 5.4 5.5 7.4 7.5 12.4 12.5 18.4 18.5-24.4 >=24.5 TOTAL M 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 -
ME 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000-NE 0.000 0.000 0.Lv0 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000
$$E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000
$ 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SSW 0.000~ 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SW 0.000 0.000 0.000' O.000 0.045 0.000 0.000 0.000 0.000 0.045 WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 )
W 0.000 0.000 0.000 0.000 0.000 0.000 0.039 0.000 0.000 0.120
>WNW 0.000 0.000 0.000 0.000 0.000 0.000 0.039 0.000 0.000 0.039 MW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 MWW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 !
' SUBTOTAL 0.000 0.000 0.000 0.000 0.045 0.000 0.078 0.000 0.000 0.204 TOTAL NOURS OF VALID OSSERVATIONS 2115.000 TOTAL lMURS OF ELEVATED RELEASES 1814.370 TOTAL NOURS OF STABILITY CLASS B 11.530 TOTAL NOURS OF ELEVATED STABILITY CLASS B 4.320 G TEOR 0 LOGICAL FACILITY: Browns Ferry Nucteer Plant STABILITY BASED ON DELTA 7 BETWEEN 45.30 AND 89.59 METERS Wi m 0!RECTION MEASURED AT 45.67 METER LEVEL Wi m SPEED MEASURED AT 45.67 METER LEVEL EFFLUENT VELOCITY = 12.60 N/S DATE PRINTEOs 24 Apr 98 NOTE: TOTALS AW SUBTOTALS ARE OBTAINED FROM UNROUSED NLMBERS E2-68
SPLif JOINT PERCENTAGE FREQUENCIES OF Wim SPEED BY Wim DIRECTION FOR STASILITY CLASS C -( 1.74 DELTA T<= 1.5 C/100 N)
Browns Ferry Nuclear Plant PART 2 0F 2 ELEVATED RELEASE MODE 4
JAN 1, 96 MAR 31, 98 WlW WIND SPEED (NPN)
DIRECTION CALM 0.6-1.4 1.5 3.4 .3.5 5.4 5.5 7.4 7.5 12.4 12.5 18.4 18.5 24.4 >=24.5 TOTAL N 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000- 0.000 NNE 0.000 0.000 0.000 0.000 0.000> 0.000 0.000 0.000 0.000 0.000 NE - 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 EM O.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.000 0.000 0.043 0.000 0.000 0.000 0.043 SE 0.000 0.000 0.047 0.047 0.000 0.000 0.000 0.000 0.000 0.095 SSE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 8 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SsW 0.000 0.000 0.000 0.095 0.000 0.000 .0.000 0.000 0.000 0.095 SW 0.000 0.000 ,0.000 'O.000 0.046 0.000 0.000 0.000 0.000 0.046 WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W- 0.000 0.000 0.000 0.000 0.044 0.082 0.039 0.000 0.000 0.165 WNW . 0.000 0.000 0.000 0.000 0.000 0.120 0.039 0.000 0.000 0.159
.W 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 MW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SUBTOTAL. 0.000 0.000 0.047 0.142 0.090 0.244 0.078 0.000 0.000 0.601 i i
TOTAL NOURS OF VALID OBSERVAfl0NS .2115.000 TOTAL NOUR$ OF ELEVATS RELEASES 1814.370 TOTAL NOUR$ OF STASILITY CLASS C 19.200 TOTAL NOUR$ OF ELEVATO STABILITY CLASS C 12.720 l I
NETEOROLOGICAL' FACILITY: Brouns Ferry Nucteer Plant STABILITY BASED ON DELTA T BETWEN . 45.30 Am 89.59 IETERS WIS DIRECTION IEASURED AT 45.67 NETER LEVEL Wie SPEED IEASURED AT 45.67 NETER LEVEL' !
EFFLUENT VELOCITY 12.60 N/S DATE PRINTED: 24 Apr 98 s
NOTE: TOTALS Am SUBTOTALS ARE OBTAINED FR(31 UNROUNDED NUMBERS E2-69 !
1 i
SPLIT JOINT PERCENTAGE FREQUENCIES OF WIW SPEED BY WI W DIRECTION FOR STABILITY CLASS D (-1.5< DELTA T<= 0.5 C/100 M)
Browns Ferry Nuclear Plant
\
PART 2 0F 2 ELEVATED RELEASE MODE JAN 1, 98 - MAR 31, 98 i
WIN WIND SPEED (MPM)
DIRECTION CALM 0.6 1.4 1.5 3.4 3.5 5.4 5.5 7.4 7.5 12.4 12.5 18.4 18.5-24.4 p24.5 TOTAL M 0.000 0.000 0.000 0.378 0.954 1.752 0.386 0.187 0.057 3.714 NNE 0.000 0.000 0.142 0.567 0.859 1.335 0.657 0.127 0.000 3.687 NE 0.000 0.000 0.142 0.047 0.536 1.043 0.652 0.037 0.000 2.458 EME 0.000 -0.000 0.284 0.426 0.453 0.714 0.077 0.000 0.000 1.954 E 0.000 0.000 0.189 0.426 0.547 0.798 0.307 0.094 0.000 2.361 ESE 0.000 0.000 0.047 0.236 0.952 2.877 0.766 0.220 0.019 5.117 {
SE 0.000 0.000 0.236 0.520 0.229 1.885 0.847 0.212 0.000 3.930 SSE 0.000 0.095 0.236 0.378 0.412 1.277 0.770 0.118 0.000 3.286 5 0.000 0.000 0.189 0.142 0.224 0.990 0.846 0.684 0.012 3.087 SSW 0.000 0.000 0.189 0.236 0.184 0.400 0.533 0.148 0.000 1.699 l SW 0.000 0.000 0.189 0.378 0.228 0.408 0.577 0.209 0.023 2.013 I WSW 0.000 0.047 0.047 0.331 0.044 0.752 1.339 0.295 0.000 2.855 W 0.000 0.000 0.095 0.284 0.407 1.398 0.841 0.249 0.000 3.273 WNW 0.000 0.000 0.095 0.331 0.319 1.491 1.002 0.312 0.000 3.549 NW 0.000 0.000 0.047 0.236 0.455 1.852 2.195 0.446 0.000 5.232 NNW 0.000 0.000 0.142 0.378 0.950 2.033 1.230 0.278 0.015 5.025 ~
SUBTOTAL 0.000 0.142 2.270 5.296 7.753 21.012 13.025 3.617 0.126 53.239 :
l l
l TOTAL HOURS OF VALID OBSERVATIONS 2115.000 TOTAL HOURS OF ELEVATED RELEASES 1814.370 TOTAL HOURS OF STABILITY CLASS D 1278.490 l TOTAL HOURS OF ELEVATED STABILITY CLASS 0 1126.010 l
NETEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant
! STASILITY BASED ON DELTA T BETWEEN 45.30 A m 89.59 METERS
! WIND DIRECTION NEASURED AT 45.67 METER LEVEL I
WIW SPEED MEASURED AT 45.67 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 24 Apr 98 l
l NOTE: TOTALS Am SUBTOTALS ARE OBTAINED FROM UNROUNDED NLMBERS E2-70 L
SPLif JOINT PERCENTAGE FREQUENCIES OF WI S SPEED BY WIW DIRECTION FOR STASILITY CLASS E -( 0.5< DELTA Tc= 1.5 C/100 M)
Brooms Ferry Nucteer Plant PART 2 0F 2 ELEVATED RELEASE NODE JAN 1, 98 - MAR 31, 98 WIS WIND SPEED (NPN)
DIRECTION CALM 0.6-1.4 1.5 3.4 3.5 5.4 5.5 7.4 7.5 12.4 12.5 18.4 18.5-24.4 >=24.5 TOTAL N 0.000 -0.000 0.000 0.095 0.321 0.339 0.039 0.012 0.000 0.805 WE 0.000 0.000 0.142 0.189 0.227 0.496 0.078 0.000 0.000 1.132 NE 0.000 0.000 0.000 0.236 0.364 0.337 0.038 0.000 0.000 0.974 ENE 0.000 0.000 0.095 0.095 0.453 0.168 0.038 0.000 0.000 0.848 E 0.000 0.000 0.095 0.142 0.231 0.796 0.077 0.000 0.000 1.340 ESE 0.000 0.000 0.047 0.4 73 1.226 2.001 0.308 0.047 0.000 4.103 SE 0.000 0.000 0.047 0.520 0.855 2.539 1.620 0.004 0.002 5.668
$$E 0.000 0.000 'O.047 0.331 0.322 1.141 1.617 0.250 0.029 3.739
$ 0.000 0.047 0.095 0.095 0.138 0.735 0.846 0.144 0.006 2.105 SSW 0.000 0.000 0.047 0.142 0.275 0.287 0.076 0.000 0.000 0.827 l SW' O.000 0.047 0.189 0.142 0.373 0.168 0.077 0.000 0.000 0.996 l WSW 0.000 0.000 0.142 0.142 0.184 0.043 0.039 0.000 0.000 0.549 )
W 0.000 0.000 0.142, 0.378 0.092 0.255 0.000 0.000 0.000 0.867 l WNW 0.000 0.000 0.189 0.331 0.318 0.129 0.000 3.000 0.000 0.966 NW 0.000 0.000 0.236 0.142 0.317 0.950 0.311 0.000 0.000 1.957 MNW 0.000 0.000 0.047 0.017 0.183 0.507 0.195 0.000 0.000 0.900
' SUBTOTAL 0.000 0.095 1.560 3.499 5.877 10.892 5.359 0.537 0.038 27.857 TOTAL NOURS OF VALIO OBSERVATIONS 2115.000 TOTAL NOURS OF ELEVAT B RELEASES 1814.370 TOTAL NOURS OF STABILITY CLASS E 659.300 1 TOTAL NOURS OF ELEVATB STABILITY CLASS E 589.170 ETEOR0 LOGICAL FACILITY: Brooms Ferry Nucteer Plant STASILITY BASED ON DELTA 7 BETIEEN 45.30 A m 89.59 E TERS
- Wim DIRECTION psamassa AT 45.67 E TER LEVEL WIN SPEED psamismen AT 45.67 IETER LEVEL EFFLUENT VELOCITY e 12.e0 M/S DATE PRINTED: 24 Apr 98 NOTE: TOTALS A m St270TALS ARE OBTAINED FRtBI UNROU WED 1A21BERS E2-71
SPLIT J0!NT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS F ( 1.5< DELT A Tc= 4.0 C/100 N)
Browns Ferry Nucteer Plant PART 2 0F 2 ELEVATED RELEASE MODE JAN 1, 96 - MAR 31, 98 WIND WIND SPEED (MPN)
DIRECT!001 CALM 0.6 1.4 1.5 3.4 3.5 5.4 5.5-7.4 7.5 12.4 12.5-18.4 18.5-24.4 >=24.5 TOTAL N 0.000 0.000 0.000 0.000 0.000 0.082 0.000 0.000 0.000 0.082 NME 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NE 0.000 0.000 0.000 0.000 0.000 0.042 0.000 0.000 0.000 0.042 ENE 0.000 0.000 0.000 0.000 0.045 0.124 0.000 9.000 0.000 0.169 E 0.000 0.000 0.000 0.000 0.000 0.490 0.039 0.000 0.000 0.529 l ESE 0.000 0.000 0.000 0.000 0.230 0.293 0.000 0.000 0.000 0.523 l
!,d 0.000 0.000 0.000 0.000 0.093 0.294 0.000 0.000 0.000 0.387 sSE 0.000 0.000 0.000 0.095 0.000 0.040 0.000 0.000 0.000 0.135 !
S 0.000 0.000 0.047 0.095 0.000 0.043 0.000 0.000 0.000 0.185 S$W 0.000 0.000 0.095 0.047 0.137 0.043 0.000 0.000 0.000 0.322 SW 0.000 0.000 0.095 0.047 0.045 0.043 0.000 0.000 0.000 0.230 ,
WSW 0.000 0.000 0.000 0.047 0.000 0.000 0.000 0.000 0.000 0.047 W 0,000 0.000 0.095 0.095 0.044 0.000 0.000 0.000 0.000 0.234 WNW 'O.000 0.000 0.095 0.095 0.091 0.000 0.000 0.000 0.000 0.280 MW 0.000 0.000 0.047 0.095 0.047 0.000 0.000 0.000 0.000 0.189 NNW 0.000 0.000 0.000 0.000 0.000 0.085 0.000 0.000 0.000 0.085 SUBTOTAL 0.000 0.000 0.473 0.615 0.733 1.580 0.039 0.000 0.000 3.439 TOTAL NOURS OF VALID OBSERVATIONS 2115.000 TOTAL NOURS OF ELEVATED RELEASES 1814.370 TOTAL NGJR$ OF STABILITY CLASS F 107.440 TOTAL NOURS OF ELEVATED STABILITY CLASS F 72.740 METEOROLOGICAL FACILITY: Browns Ferry Nucteer Plant STABILITY BASED 04 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 a 12.60 M/S
- DATE PRINTED: 24-Apr-98 NOTE: TOTALS Als SUBTOTALS ARE OBTAINED FRA UNROUNDEO NUMBERS F.2 72
r SPLif JOINT PERCENTAGE FREQUENCIES OF WIN SPEED BY 'Jte DIRECTION FOR STABILITY CLASS G (DELTA T > 4.0 C/100 M)
Browns Ferry Nuclear Plant PART 2 of 2 ELEVATED RELEASE MODE JAN. 1, 98
- MAR 31, 98
. WIN WI N SPEED (MPM)
DIRECTION CALM 0.6 1.4 1.5 3.4- 3.5 5.4 5.5 7.4 7.5 12.4 12.5 18.4 18.5 24.4 >=24.5 TOTAL N 0.000 0.000 0.000 0.000 0.000 0.083 0.000 0.000 0.000 0.083 NME 0.000 0.000 0.000 0.000 - 0.000 0.000 0.000 0.000 0.000 0.000 NE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 'O.000 'O.000 0.000
-ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 .0.000 0.000 0.000 l E 0.000 0.000 0.000 'O.000 0.000 0.043 0.000 0.000 0.000 0.043 ESE 0.000 0.000 0.000 0.047 0.044 0.043 0.000 0.000 0.000 0.134 SE 0.000 0.000 0.047 0.000 0.000- 0.000 0.000 0.00C 0.000 0.047 SSE 0.000 0.000 0.000 0.000- 0.000 0.000 0.000 0.000 0.000 0.000 5 0.000 0.000 0.000 0.000 - 0.000 0.000 0.000 0.000 0.000 0.000 SSW 0.000 0.000 0.000 0.000 0.091 0.000 0.000 0.000 0.000 0.091 SW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WSW 0.000 0.000 ~ 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W -0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 land 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 MW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NNW ' 0.000 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.046
' SUBTOTAL 0.000 0.000 0.047 0.047 0.182 0.169 0.000 0.000 -0.000 0.445 TOTAL NOURS OF VALIO OBSERVATIONS 2115.000 TOTAL NOURS OF ELEVATED RELEASES 1814.370 TOTAL NGJRS OF STABILITY CLASS 6 32.250 TOTAL NOURS OF ELEVATS STABILITY CLASS 8 9.410 METEGR0 LOGICAL FACILITY: Sreams F'erry Nuclear Plant STA51LITY BASED ON DELTA T BETINEN 45.30 Am 89.59 METERS WI N DIRECTION P8am m8m AT 45.67 METER LEVEL 4 WIN SPEED IEASURED AT 45.67 IETER LEVEL -
EFFLUENT VELOCITY = 12.60 N/S.
DATE PRINTED: 24 Apr 98 NOTE: TOTALS Am EST0TALS ARE OBTAINED FRGI UNROUNDED IRSIBERS E2-73
RadiologicalImpact Assessaient i
Br:wns Ferry Nuclear Plant l January- December 1998 Table 19 Joint Frequency Distnbution in Percent for Split Level Releases (Elevated Portion)
Second Quarter 9
E2-74
l SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STASILITY CLASS A (DELTA Tc= 1.9 C/100 M) l Browns Ferry Nuclear Plant l PART 2 0F 2 ELEVATED RELEASE MODE l
APR 1, 1998 - JUN 30, 1998 l
l 1
WIND WIND SPEED (MPM)
DIRECTION CALM 0.6 1.4 1.5 3.4 3.5 5.4 5.57.4 7.5 12.4 12.5-18.4 18.5 24.4 >=24.5 TOTAL l
l N 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NNE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 l ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000
.E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000
$$E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000
$ 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000
$$W 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 C.000 NW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SUsT0TAL 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000
~
TOTAL HOURS OF VALIO OSSERVATIONS 2029.000 TOTAL HOURS OF ELEVATED RELEASES 1837.740 TOTAL HOURS OF STASILITY CLASS A 17.400 TOTAL HOURS OF ELEVATED STABILITY CLASS A 0.000 METEOROLOGICAL FACILITY: 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: 19980720
. NOTE: TOTALS AND SUETOTALS ARE osTAINED FROM UNROUNDED NUMBERS E2-75 .
p S* LIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS B ( 1.9< DELTA T<= 1.7 C/100 M)
Browns Ferry Nuclear Plant PART 2 0F 2 ELEVATED RELEASE MODE APR 1, 1998 JUN 30, 1998 l
l WIND WIMD SPEED (MPN)
I l
DIRECTION CALM 0.6 1.4 1.5 3.4 3.5 5.4 5.5 7.4 7.5 12.4 12.5 18.4 18.5-24.4 >=24.5 TOTAL 1 l
0 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 {'
NNE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 i E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000
$$E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 'O.000 0.00')
5 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SSW 0.000 - 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SW - 0.000 0.000 0.000 'O.000 0.000 0.000 0.000 0.000 0.000 0.000 WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 l W 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WWW 0.000 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.046 NW 0.000 - 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NNW 0.000 0.000 0.000 0.000- 0.000 0.000 0.000 0.000 0.000 0.000 SUST0TAL -0.000 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.046 l
TOTAL HOURS OF VALID OSSERVATIONS 2029.000 TOTAL HOURS OF ELEVATED RELEASES 1837.740 TOTAL HOURS OF STABILITY CLASS S 13.980 TOTAL HOURS OF ELEVATED STASILITY CLASS 8 0.930 l
i
! METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA T SETWEEN 45.30 AND 89.59 METERS WIND DIRECTION MEASURED AT 45.67 METER LEVEL WIND SPEED MEASURED AT 45.67 METER LEVEL
-EFFLUENT VELOC:TY = 12.60 M/S DATE PRINTED: 19980720 NOTE: TOTALS AND SUBTOTALS ARE osTAINED FROM UNkOUNDED NUMBERS
- E2-76 l-
SPLif JOINT PERCENTAGE FREQUENCIES OF WINO SPEED ST WINO DIRECTION FOR STAslLITY CLASS C ( 1.7< DELTA T<= 1.5 C/100 M)
,, Browns Ferry Nuclear Plant PART 2 0F 2 ELEVATED RELEASE MCr .
APR 1, 1998 JUN 30, 1998 WIND WIN 0 SPEED (MPM)
DIRECTION CALM 0.6 1.4 1.5 3.4 3.5 5.4 5.57.4 7.5 12.4 12.5 18.4 18.5 24.4 >=24.5 TOTAL N 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NME 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NE 0.000' O.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.000 0.000 0.083 0.000 0.000 0.000 0.083 SE 0.000 0.000 0.000 0.049 0.000 0.043 0.000 0.000 0.000 0.093
$$E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 5 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000
$$W 0.000 0.000 0.000 0.000 0.000 0.043 0.000 0.000 0.000 0.043
. TW 0.000 0.000 0.000 0.049 0.000 0.000 0.000 0.000 0.000 0.049 WSW 0.000 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.046 W 0.000 0.000 0.000 0.000 0.000 0.045 0.000 0.000 0.000 0.045 WNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SUBTOTAL 0.000 0.000 0.000 0.099 0.046 0.214 0.000 0.000 0.000 0.358 TOTAL HOURS OF VALID OBSERVATIONS -
2029.000 TOTAL HOURS OF ELEVATED RELEASES 1837.740 TOTAL HOURS OF STASILITY CLASS C 17.720 TOTAL HOURS OF ELEVATED STA8!LITY CLASS C 7.270 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA *T BETWEEN 45.30 AND 89.59 METERS WINO DIRECTION MEASURED AT 45.67 METER LEVEL l
WIND SPEED MEASURED AT 45.67 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 19980720 3
NOTE: TOTALS AND SUST0TALS ARE OSTAINED FROM UNROUNDED NUMBERS E2-77
Is SPLIT JOINT PERCENTAGE FREQUENCIES OF WINO SPEED BY WIND DIRECTION FOR STABILITY CLASS D ( 1.5< DELTA Tc= 0.5 C/100 M)
Broene Ferry Nuclear Plant PART 2 0F 2 ELEVATED RELEASE MODE APR 1, 1998 JUN 30, 1998 WIND WIND SPEED (MPN)-
DIRECTION . CALM 0.6 1.4 1.5 3.4 3.5 5.4 5.5-7.4 7.5 12.4 12.5 18.4 18.5 24.4 >=24.5 TOTAL M 0.000 0.000 0.148 0.148 0.328 1.069 0.366 0.000 0.000 2.059 NNE 0.000- 0.000 0.099 0.2% -0.569 0.744 0.205 0.000 0.000 1.912 NE 0.000 - 0.000 0.000 0.246 0.475 0.775 0.081 0.000 0.000 1.578 EME 0.000 0.000 0.049 0.148 0.139 0.181 0.000 0.000 0.000 0.517 E 0.000 0.000 0.148 0.148 0.047 0.129 0.000 0.000 0.000 0.472 ESE 0.000 0.000 0.296 0.246 0.668 0.387 0.164 0.000 0.000 1.761 SE 0.000 0.000 1.331 0.887 0.476 0.658 0.919 0.074 0.000 4.345 SSE 0.000 0.000 0.641 0.591 0.423 1.244 0.726 0.039 0.000 3.665 S 0.000 0.049 0.739 0.591 0.814 1.172 1.083 0.639 0.043 5.131 SSW 0.000 0.000 0.296 0.591 0.864 1.629 1.360 0.296 0.000 5.036 SW 0.000 0.000 0.246 1.035 1.230 2.250 0.845 0.075 0.000 5.682 WSW 0.000 0.000 0.197 1.528 0.286 2.112 1.044 0.182 0.009 5.359 W 0.000 0.000 0.099 0.739 1.232 1.431 0.684 0.097 0.001 4.282 WWW 0.000 0.000 0.246 0.394 0.660 1.126 1.118 0.209 0.000 3.754 WW 0.000 0.000 0.099 0.296 0.953 1.697 1.316 0.226 0.000 4.587 NNW 0.000 0.000 0.099 0.345 0.287 0.471 0.559 0.070 0.000 1.831 l l SUBTOTAL 0.000- 0.049 4.731 8.231 9.451 17.076 10.470 1.907 0.054 51.970 TOTAL HOURS OF VALID OBSERVATIONS 2029.000 TOTAL HOURS OF ELEVATED RELEASES 1837.740
. TOTAL NOURS OF STASILITY CLASS 0 1122.960 TOTAL HOURS OF ELEVATED STABILITY CLASS D 1054.470 NETEOROLOGICAL FACILITY: Browne Ferry Nuclear Plant STASILITY BASED ON DELTA T BETWEEN 45.30 Am 89.59 METERS WINO DIRECTION MEASURED AT 45.67 METER LEVEL WIND SPEED MEASURED AT 45.67 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTE0: 19980720 NOTE: TOTALS AND SUST0TALS ARE osTAINED FROM UNROUNDED NUN 8ERS E2-78 L.
SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED 8Y WINO DIRECTION FOR STASILITY CLASS E ( 0.5< DELTA T<= 1.5 C/100 M)
Browns Ferry Nuclear Plant PART 2 0F 2 ELEVATED RELEASE MODE APR 1, 1998 JUN 30, 1998
-WIND WIND SPEED (MPN)
DIRECTION CALM 0.6 1.4 1.5 3.4 3.5-5.4 5.57.4 7.5-12.4 12.5 18.4 18.5-24.4 >=24.5 TOTAL N 0.001 0.000 0.049 0.049 0.334 0.656 0.000 0.000 0.000 1.089 NME 0.002 0.000 0.197 0.148 0.189 0.085 0.000 0.030 0.000 0.651 NE 0.001 0.000 0.099 0.099 0.189 0.434 0.000 0.000 0.000 0.822 ENE 0.001 0.000 0.049 0.099 0.049 0.306 0.000 0.000 0.000 0.503 E 0.001 0.000 0.099 0.197 0.142 0.219 0.000 0.000 0.000 0.658 ESE 0.005 0.049 0.345 0.197 0.282 0.348 0.000 0.000 0.000 1.226 SE 0.006 - 0.099 0.444 1.183 0.807 0.615 0.164 0.000 0.000 3.316
$$E 0.009 0.000 0.789 0.296 0.626 0.338 0.762 0.050 0.000 2.869 S 0.006 0.090 0.394 0.591 0.857 1.563 0.319 0.023 0.000 3.852 SSW 0.003 0.000 0.2% 0.936 0.522 0.916 0.122 0.000 0.000 2.796 SW 0.003 0.049 0.246 1.281 0.848 1.499 0.161 0.050 0.000 4.138 4-WSW 0.003 0.049 0.246 0.591 0.718 0.564 0.160 0.028 0.000 2.361 W 0.002 0.000 0.148 0.838 0.712 0.397 0.000 0.000 0.000 2.097 WWW 0.005 0.049 0.345 0.049 0.143. 0.089 0.000 0.000 0.000 0.680 NW 0.001 0.000 0.099 0.148 0.236 0.086 0.041 0.000 0.000 0.610 WNW 0.000 0.000 0.000 0.296 0.282 0.340 0.041 0.027 0.000 0.985 SUOT0TAL 0.049 0.394 3.844 6.999 6.936 8.456 1.770 0.207 0.000 28.655 TOTAL HOURS OF VALID 00$ERVAT!0NS 2029.000 TOTAL HOURS OF ELEVATED RELEASES 1837.740 TOTAL NOUR$ OF STABILITT CLASS E 644.010 TOTAL HOURS 0F ELEVATED STABILITY CLASS E 581.420 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STASILITY BASED ON DELTA T SETWEEN 45.30 AND 89.59 METERS WIND DIRECTION MEASURED AT 45.67 METER LEVEL
' WIND SPEED MEASURED AT 45.6/ METER LEVEL
!FFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 19Y80723 NOTE: TOTALS AND SUBTOTALS ARE OSTAINED FROM UNROUNDED NUMBERS I
E2-79 m, .-. . .
- p. 1 l
l
. SPLif JOINT PERCENTAGE FREQUENCIES OF WIND SPEED SY WINO DIRECTION FOR STABILITY CLASS F ( 1.5< DELTA T<= 4.0 C/100 M)
Browns Ferry Nuclear Plant PART 2 0F 2 ELEVATED RELEASE MODE APR 1, 1998 - JUN 30, 1998 W'IND WIND SPEE0(MPM)
DIRECTION CALM 0.6 1.4 1.5 3.4 3.5 5.4 5.5 7.4 7.5 12.4 '12.5 18.4 18.5 24.4 >=24.5 TOTAL )
)
I N 0.000 0.049 0.000 0.049 0 M9 0.392 0.000 0.000 0.0% 0.540 NNE- 'O.000 0.000 0.000 0.049 0.046 0.298 0.041 0.000 0.000 0.434 NE 0.000 0.000 0.000 0.000 0.047 0.000 0.000 0.000 0.000 0.047 ENE 0.000 0.000 0.049 0.000 0.000 0.084 0.000 0.000 0.000 0.133 1 E 0.000 0.000 0.04 9 0.000 0.243 0.087 0.082 0.000 0.000 0.461 l
ESE 0.000 0.000 0.049 0.148 0.284 0.175 0.000 0.000 0.000 0.656 j SE 0.000 0.099 0.246 0.394 0.433 0.000 0.000 0.000 0.000 1.172
$$E 0.000 'O.000 0.197 0.2% 0.190 0.042 0.041 0.000 0.000 0.766 S 0.000 0.000 0.099 0.148 0.187 0.179 0.000 0.000 0.000 0.613 SSW 0.000 0.148 0.049 0.345 0.332 0.264 0.000 0.000 0.000 1.138 SW -0.000 0.000 0.099 0.345 0.471 0.224 0.000 0.000 0.000 1.138 WSW 0.000 0.000 0.049 0.148 0.000 0.000 0.000 0.000 0.000 0.197 W 0.000 0.000 0.197 0.099 0.048 0.000 0.000 0.000 0.000 0.344 I WWW 0.000 0.000 0.000 0.000 0.047 0.000 0.000 0.000 0.000 0.047 l NW 0.000 0.000 0.049 0.000 0.048 0.000 0.000 0.000 0.000 0.098 NNW 0.000 0.000 0.049 0.000 0.047 0.259 0.000 0.000 0.000 0.355
$UBTOTAL 0.000 0.296 1.183 2.021 2.473 2.003 0.164 0.000 0.000 8.139 )
TOTAL HOURS OF VALIO 08SERVATIONS 2029.000 TOTAL HOURS OF ELEVATED RELEASES 1837.740 TOTAL HOURS OF STABILITY CLASS F 178.620 TOTAL HOURS OF ELEVATED STASILITY CLASS F 165.150 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY SASED ON DELTA T SETWEEN 45.30 AND 89.59 METERS WINO DIRECTION MEASURED AT 45.67 METER LEVEL WIND SFEED MEASURED AT 45.67 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 19980720 NOTE: TOTALS AND SUST0TALS ARE OSTAINED FROM UNROUNDED NUMBERS E2-80
SPLl? JOINT PERCENTAGE FREQUENCIES OF WIND SPEED ST WINO O!RECTION FOR STASILITY CLASS G (DELTA T > 4.0 C/100 M)
Browns Ferry Nucteer Plant PART 2 0F 2 ELEVATED RELEASE MODE APR 1, 1998 JUN 30, 1998 WINO WIN 0 SPEED (MPN)
DIRECTION CALM 0.6 1.4 1.5 3.4 3.5-5.4 5.5 7.4 7.5 12.4 12.5 18.4 18.5 24.4 >=24.5 TOTAL
, N 0.000 0.000- 0.000 0.000 0.000 0.130 0.000 0.000 0.000 0.130 NNE 0.000 0.049 0.000 0.000 0.000 0.253 0.041 0.000 0.000 0.343 NE 0.000 0.000 0.049 0.000 0.000 0.000 0.000 0.000 0.000 0.049 ENE 0.000 0.000' O.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SE 0.000 0.000 0.099 0.197 0.000 0.000 0.000 0.000 0.000 0.296
$$E 0.000 0.049 0.049 0.049 0.000 0.000 0.000 0.000 0.000 0.148 5 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000
$$W 0.000 0.000 0.000 0.049 0.047 0.000 0.000 0.000 0.000 0.096 SW 0.000 0.000 0.049 0.000 0.097 0.000 0.000 0.000 -0.000 0.146 WSW 0.000 0.000' O 049 0.000 0.000 0.000 0.000 0.000 0.000 0.049
.W 0.000 0.000. 0.000 0.000 0.000. 0.000 0.000 0.000 0.000 0.000 WWW 0.000 0.049 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.049 NW '0.000 0.000 0.049 0.000 0.000 C.000 0.000 0.000 0.000 0.049 NNW 0.000 0.000 0.000 0.049 0.000 0.000 0.000 0.000 0.000 0.049 SueTOTAL 0.000 0.148 0.345 0.345' O.143 0.382 0.041 0.000 0.000 1.405 TOTAL' HOURS OF VALID OBSERVATIONS 2029.000 TOTAL HOURS OF ELEVATED RELEASES 1837.740 TOTAL HOURS OF STABILITY CLASS G 34.310 TOTAL NOURS OF ELEVATED STASILITY class G 28.500 METEOROLOGICAL FACILITY:.. Browns Ferry Nuclear Plant STASILITY BASED ON DELTA T BETWEEN. 45.30 AND 89.59 METERS WIND DIRECTION MEASURED AT 45.67 METER LEVEL b!ND SPEED MEASURED AT 45.67 METER LEVEL EFFLUENT VELOCITT = 12.60 M/S DATE PRINTED: 19980720 NOTE: TOTALS AND SUST0TALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-81
RadiologicalImpact Assessment Cr:wns Ferry Nuclear Plant January - December 1998 Table 20 Joint Frequency Distribution in Percent for Split Level Releases (Elevated Portion)
Third Quarter 4
w E2-82
l SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR l
STABILITY CLASS A (DELTA T<=.1.9 C/100 M)
Browns Ferry Nuclear Plant l
PART 2 0F 2 ELEVATED RELEASE MODE l
JUL 1. 1998 - SEP 30, 1998 l
WINO WINO SPEED (MPH)
. DIRECTION CALM 0.6 1.4 1.5 3.4 3.5 5.4 5.5 7.4 7.5 12.4 12.5 18.4 18.5 24.4 ~24.5 TOTAL N 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NNE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NE- 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E- 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE' ' O.000 0.000 0.000 0.000 0.000 'O.043 0.000 0.000 0.000 0.043 SE 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.046 SSE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 5 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SSW 0.000 .0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 i WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 Witi 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 16f 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 Nial 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 l
SU8 TOTAL 0.000 0.000 0.000 0.046 0.000 ?.043 0.000 0.000 0.000 0.089 )
TOTAL HOURS OF VALID OBSERVATIONS 2164.000 1 TOTAL HOURS OF ELEVATED RELEASES 2065.180
{
TOTAL HOURS OF STABILITY CLASS A 13.040 l TOTAL HOURS OF ELEVATED STABILITY CLASS A 1.920 METEOROLOGICAL FACILITY: Browns Ferry Nucleur Plant !
STABILITY BASED ON DELTA T BETWEEN 45.30 AND 89.59 METERS l WIND DIRECTION MEASURED AT 45.67 METER LEVEL l WIND SPEED MEASURED AT 45.67 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PR!IffED: 19981118 NOTE: TOTALS AND SU8 TOTALS ARE OSTAINED FROM UNROUNDED NUMBERS ,
l E2-83
)
i i
l l
l 5PLIT J0!NT PERCEKTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR l
STABILITY CLASS B ( 1.9< DELTA T==.1.7 C/100 M)
Browns Ferry Nuclear Plant PART 2 0F 2 ELEVATED RELEASE MODE JUL 1. 1998 . SEP 30, 1998 WIND WIND SPEED (MPH)'
, DIRECTION CALM 0.61.4- 1.5 3.4 3.5 5.4 5.5 7.4 7.5 12.4 12.5 18.4 18.5 24.4 =24.5 TOTAL
( N 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NME 0.000 0.000 0.000 0.000 C.000 0.000 0.000 0.000 0.000 0.000 NE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ENE 0.000 0.000 0.C00 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.000 0.000 0.039 0.000 0.000 0.000 0.039 3
[ ESE 0.000 0[000 0.000 0.000 0.000 0.000 0.000 0.'000 0.000 0.000 l SE 0.000 0.000 0.000 0.000 0.000 0.042 0.000 0.000 0.000 0.042 SSE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 l
S 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 i SSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 I SW 0.000 - 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 l WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 l
18Ad 0.000 0.000 0.000 0.000 0.000 0.000 0.000 .0.000 0.000 0.000 El 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NBAd 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 l
l 0.000 0.000 0.000 0.000 0.000 0.081 0.000 0.000 SUBTOTAL 0.000 0.081 l
l ~ TOTAL HOURS OF VALID OBSERVATIONS 2164.000 TOTAL HOURS OF ELEVATED RELEASES 2065.180 ;
TOTAL HOURS OF STABILITY CLASS B 8.100 l TOTAL HOURS OF ELEVATED STABILITY CLASS B 1.750 l
METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STi'!LITY BASED ON DELTA.T BETJEEN 45.30 AND 89.59 METERS WITJ DIRECTION MEASURED AT 45.67 METER LEVEL WID SPEED NEASURED AT 45.67 METER LEVEL EFFLUENT VELOCITY = 12.60 N S DATE PRINTED: 19981118 NOTE: TOTALS AND SU5 TOTALS ARE 08TAINED FROM UNROUNDED NUMBERS E2-84 f
u
I l
SPLIT JOINT PERCENTAGE FREQUENCIES OF WINO SPEED BY WINO DIRECTION FOR STABILITY CLASS C (.1.7< DELTA T<= 1.5 C/100 M)
Browns Ferry Nuclear Plant PART 2 0F 2 ELEVATED RELEASE MODE l l
JUL 1. 1998 SEP 30. 1998 1
21 3 WIND SPEED (MPH) i l DIRECTION CALM 0.6 1.4 1.5 3.4 3.5 5.4 5.5 7.4 7.5 12.4 12.5 18.4 18.5 24.4 ~24.5 TOTAL N 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NNE 0.000 0.000 0.000 0.000 0.000 0.000 0.038 0.000 0.000 0.038 NE 0.000 0.000 0.000 0.000 0.000 0.079 0.000 0.000 0.000 0.079 ENE 0.000 0.000 0.000 0.046 0.000 0.039 0.000 0.000 0.000 0.085 E 0.000 0.000 0.000 0.000 0.000 0.040 0.000 0.000 0.000 0.040 ESE 0.000 0.000 0.000 ' O.000 0.181 0.000 0.000 0.000 0.000 0.181 j SE 0.000 0.000 0.000 0.370 0.000 0.082 0.000 0.000 0.000 0.452
$$E 0.000 0.000 0.046 0.139 0.135 0.040 0.000 0.000 0.000 0.360 3 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.046 l SSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WSW 0.000 0.000 0 000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 U 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 M 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000
{
M 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 _
SUOTOTAL 0.000 0.000 S.046 0.601 0.316 0.280 0.038 0.000 0.000 1.280 l* TOTAL HOURS OF VALID OBSERVATIONS 2164.000 TOTAL HOURS OF ELEVATED RELEASES 2065.130 TOTAL HOURS OF STABILITY CLASS C 33.890 TOTAL HOURS OF ELEVATED STABILITY CtASS C 27.710 l
l METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant ST'SILITY BASED ON DELTA T OETWEEN 45.30 AND 89.59 METERS WI D DIRECTION MEASURED AT 45.67 METER LEVEL Wl3 SPEED MEASURED AT 45.67 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 19981118 NOTE: TOTALS AND SUOTOTALS ARE 08TAINED FROM UNR0UNDED NLMOERS f E2-85 L
p SPLIT JOINT PERCENTAGE FREOUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS D ( 1.54 DELTA T== 0.5 C/100 N) l Browns Ferry Nuclear Plant PART 2 0F 2 ELEVATED RELEASE MODE l
l JUL 1. 1998 SEP 30. 1998 l
.'IU WIND SPEED (MPH)
DIRECTION CALM 0.6 1.4 1.5 3.4 3.5 5.4 5.5 7.4 7.5 12.4 12.5 18.4 18.5 24.4 =24.5 TOTAL l
N 0.000 0.000 0.508 0.739 0.854 1.775 0.382 0.000 0.000 4.259 NNE 0.000 0.000 0.185 0.601 0.534 1.194 0.038 0.000 0.000 2.552 NE 0.000 0.000 0.139 0.462 0.537 0.898 0.076 0.000 0.000 2.112 ENE 0.000 0.000 0.323 0.370 0.225 0.248 0.038 0.000 0.000 1.204 E 0.000 0.046 0.370 'O.508 0.130 0.246 0.000 0.000 0.000 1.300 ESE 0.000 0.000 0.416 0.370 0.624 0.908 0.000 0.000 0.000 2.317 i SE 0.000 0.000 1.201 1.248 0.720 1.351 0.341 0.000 0.000 4.860 SSE 0.000 0.092 1.617 1.479 0.934 1.159 0.229 0.000 0.000 5.511 S' O.000 0.000 1.386 1.895 1.160 0.448 0.114 0.000 0.000 5.003 SSW 0.000 0.046 1.386 1.664 0.451 0.288 0.000 0.0t0 0.000 3.835 SW 0.000 0.000 0.739 1.848 0.353 0.249 0.000 0.000 0.000 3.189 WSW 0.000 0.092 0.555 2.033 0.536 0.208 0.000 0.000 0.000 3.424 W 0.000 0.000 0.277 1.109 1.026 0.783 0.000 0.000 0.000 3.196 WW 0.000 0.000 0.277 0.647 1.341 0.779 0.113 0.000 0.000 3.158 0 0.000 0.000 0.139 0.786 1.074 0.732 0.266 0.000 0.000 2.996 NW 0.000 0.000 0.508 0.970 0.30s 0.615 0.151 0.023 0.000 2.575
$U8 TOTAL 0.000 0.277 10.028 16.728 10.106 11.882 1.748 0.023 0.000 51.492 TOTAL HOURS OF VALID OBSERVATIONS 2164.000 TOTAL HOURS OF ELEVATED RELEASES 2065.180 TOTAL HOURS OF STA81LITY CLASS D 1136.220 TOTAL HOURS OF ELEVATED STABILITY CLASS 0 1114.280 l
1 METEOROLOGICAL FACILITY: 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: 19981118 NOTE: TOTALS AND SU8TUTALS ARE O8TAINED FRON UNROUNDED NUMBERS l
E:2-86 !
I l
7 I
I 1
( SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS E (.0.5* DELTA T<= 1.5 C/100 M) l Browns Ferry Nuclear Plant PART 2 0F 2 ELEVATED RELEASE MODE l JUL 1. 1998 SEP 30. 1998 l
WIND WIND SPEED (MPH)
DIRECTION CALM- 0.6 1.4 1.5 3.4 3.5 5.4 5.5 7.. 7.5 12.4 12.5 18.4 18.5 24.4 ~24.5 TOTAL N 0.003 0.000 0.508 0.508 0.751 1.105 0.000- 0.000 0.000 2.875 l
. NNE 0.002 0.046 0.370 0.601 0.623 1.146 0.115 0.000 0.000 2.903 NE 0.002 0.092 0.277 0.416 0.671 1.462 0.190 0.000 0.000 3.111
- ENE 0.002 0.000 0.277 0.462 0.181 0.532 0.038 0.000 0.000 1.492 E 0.002 0.000 0.370 0.878 0.402 0.867 0.000 0.000 0.000 2.519 ESE ' 0.005 0.046 0.878 1.063 1.070 1.5'90 0.000 0.000 0.000 4.652 SE 0.006 0.185 0.832 1.017 0.761 0.411 - 0.038 0.000 0.000 3.249 SSE 0.007 0.139 1.017 0.370 0.177 0.447 0.115 0.000 0.000 2.270 l
5 0.003 0.139 0.462 0.462 0.139 0.163 0.038 0.000 0.000 1.406 l SSW . 0.002 0.046 0.323 0.416 0.358 0.000 0.000 0.000 0.000 1.145 SW 0.003 0.092 0.462 0.231 0.225 0.000 0.000 0.000 0.000 1.013 l
WSW 0.001 0.046 0.185 0.323 0.222 0.207 0.000 0.000 0.000 0.985 W 0.002 0.000 0.416 0.323 0.222 0.289 0.000 0.000 0.000 1.253 i#8i 0.001 0.000 0.231 0.092 0.089 0.000 0.000 0.000 0.000 0.414 YJ 0.001 0.092 0.139 0.462 0.136 0.000 0.000 0.000 0.000 0.830 N18d 0.002 - 0.000 0.370 0.323 0.450 0.122 0.000 0.000 0.000 1.268 SU8 TOTAL 0.046 0.924 7.116 7.948 6.476 8.341 0.534 0.000 0.000 31.387 l
l f
I TOTAL HOURS OF VALID OBSERVATIONS 2164.000 l . TOTAL HOURS OF ELEVATED RELEASES 2065.180 TOTAL HOURS OF STABILITY CLASS E 707.080 TOTAL HOURS OF ELEVATED STABILITY CLASS E 679.210 l
METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA T BETWEEN 45.30 AND 89.59 METERS
. WID DIRECTION MEASURED AT 45.67 METER LEVEL l WID SPEED MEASURED AT 45.67 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 19981118 NOTE: -TOTALS AND SUBTUTALS ARE 08TAINED FROM UNROUNDED NUMBERS E2-87 i-
SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR 1
STA81LITY CLASS F ( 1.5* DELTA T= 4.0 C/100 M)
Browns Ferry Nuclear Plant PART 2 0F 2 ELEVATED RELEASE MODE JUL 1. 1998 SEP 30, 1998 WIO ' WIND SPEED (MPH)
DIRECTION CALM 0.6 1.4 1.5 3.4' 3.5 5.4 5.5 7.4 7.5 12.4 12.5 18.4 18.5 24.4 ~24.5 TOTAL N. 0.000' O.000 0.046 0.092 0.223 0.369 0.000 0.000 0.000 0.730 NNE 0.000 0.000 0.000 0.231 0.223 1.116 0.190 0.000 0.000 1.761 NE 0.000 0.000 0.092 0.231 0.404 0.813 0.115 0.000 0.C90 1.655 ENE 0.000 0.000 0.046 0.231 0.130 0.447 0.037 0.000 0.000 0.892 3 E 0.000 0.000 0.046 0.000 0.087 0.244 0.000 0.000 0.000 0.377 ESE '0.000 ' O.000 0.139 0.139 0.179 0.207 0.000 0.000 0.000 0.663 SE 0.000 0.000 0.231 0.231 0.091 0.085 0.000- 0.000 0.000 0.638 ]
SSE 0.000 0.000 0.139 0.000 0.000 0.000 0.000 0.000 0.000 0.139 5 0.000 0.046 0.092 0.046 0.000 0.000 0.000 0.000 0.000 0.185 j l
SSW 0.000 0.000 0.185 0.139 0.000 0.000 0.000 0.000 0.000 0.323 SW ' O.000 - 0.046 0.185 0.092 0.000 0.043 0.000 0.000 0.000 0.366 )
WSW : 0.000 0.000 0.231 0.000 ~0.046 0.000 0.000 0.000 0.000 0.277 W 0.000 0.000 0.092 0.092 0.000 0.043 0.000 0.000 0.000 0.228 Witi 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.000~ 0.046 0 0.000 0.000 0.139 0.092 0.000 0.000 0.000 0.000 0.000 0.231 NIed 0.000 0.000 0.139 0.139 0.092 0.082 0.000 0.000 0.000 0.451 SU8 TOTAL 0.000 0.092 1.848 1.756 1.474 3.449 0.342 0.000 0.000 8.962 l
TOTAL HOURS OF VALID 08 SERVAT 10ltS 2164.000 l!
TOTAL HOURS OF ELEVATED RELEASES 2065.180 TOTAL HOURS OF STABILITY CLASS F 210.810 TOTAL HOURS OF ELEVATED STA81LITY CLASS F 193.940 "
I i
METEOROLOGICAL FACILITY: Browns Ferry 11uclear Plant STABILITY BASED Oli DELTA T BETWEEN 45.30 AND 89.59 METERS WI D DIRECTION MEASURED AT 45.67 METER LEVEL !
I WI O SPEED MEASURED AT -45.67 METER LEVEL EFFLUEffT VELOCITY = 12.60 M/S DATE PRINTED: 19981118 NOTE: TOTALS Ale SUOTOTALS ARE 08TAINED FROM UNROUNDED NUNBERS E2-88
SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEE0 BY WIND O!RECTION FOR STABILITY CLASS G (DELTA T = 4.0 C/100 M)
Browns Ferry Nuclear Plant PART 2 0F 2 ELEVATED RELEASE MODE JUL 1. 1998 SEP 30, 1998 WID WIND SPEED (MPH)
DIRECTION CALM 0.6 1.4 1.5 3.4 3.5 5.4 5.5 7.4 7.5 12.4 12.5 18.4 18.5 24.4 >-24.5 TOTAL M 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.046 NNE 0.000 0.000 0.046 0.139 0.087 0.320 0.038 0.000 0.000 0.631 NE 0.000 0.000 0.000 0.046 0.089 0.576 0.038 0.000 0.000 0.750 ENE 0.000 - 0.000 0.000 0.000 0.134 0.079 0.000 0.000 0.000 0.213 E 0.000 0.000 0.046 0.000 . 0.000 0.041 0.000 0.000 0.000 0.087 ESE 0.000 0.000 '0.000 0.000 0.000 0.000 0.000 0.000 '0.000 0.000 SE 0.000. 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.046 SSE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 5 0.000 0.092 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.092 SSW 0.000- 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.046 SW . 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.046 Witi 0.000 0.000 0.139 0.046 0.000 0.000 0.000 0.000 0.000 0.185 iW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 IN8i 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ,
SL'BTOTAL 0.000 0.139. 0.323 0.277 0.311 1.016 0.077 0.000 0.000 2.143 TOTAL HOURS OF VALID OBSERVATIONS 2164.000 TOTAL HOURS OF ELEVATED RELEASES 2065.100 TOTAL HOURS OF STABILITY CLASS 6 54.860 TOTAL HOURS OF ELEVATED STABILITY CLASS G 46.370 NETEOR0 LOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA.T BETWEEN 45.30 AND 89.59 METERS WIND DIRECTION MEASURED AT 45.67 METER LEVEL
- l. WIND SPEED MEASURED AT 45.67 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 19981118 NOTE: TOTALS AND SU8 TOTALS ARE OSTAINED FROM UNROUNDED NLMBERS l E2-89 l
L.
RadiologicalImpact Assessinent Br:wns F:rry Nrclear Plant January - December 1998 Table 21 Joint Frequency Distribution in Percent for Split Level Releases (Elevated Portion)
Fourth Quarter E2 90
fl l
h.
l SPLIT JOINT PfRCENTAGE FREQUENCIES OF Wim SPEED BY WIND DIRECTION FOR I
STABILITY CLASS A' '(DELTA T<= 1.9 C/100 M)
Browns Ferry Nuclear Plant
- PART 2 0F 2 ELEVATED RELEASE MODE OCT 1, 1998 DEC 31, 1998 L~
t i
WIND Wi m SPEED (MPN)
DIRECTION CALM 0.6 1.4 1.5 3.4- 3.5 5.4 5.57.4 .7.5 12.4 12.5 18.4 18.5 24.4 >=24.5 TOTAL N 0.000~ 0.000- 0.000 0.000 - 0.000 0.000 0.000 'O.000 0.000 0.000 WNE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ENE .0.000 0.000 'O.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 l . SE 0.000 - 0.000 'O.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000
~SSE 0.000- 0.000 ' O.000 0.000 0.000 0.000 0.000 0.000 .0.000 0.000 A 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SW - 0.000 0.000 0.000 0.000 0.000 0.000 . 0.000 0.000 0.000 0.000
, WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000
! W 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WNW - 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000
.W 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 l
WW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SUOTOTAL'. 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 TOTAL MOURS OF VALIO OBSERVATIONS = 2105.000 TOTAL HOURS OF ELEVATED RELEASES 1903.600 TOTAL NOURS OF STASILITY CLASS A 12.930 TOTAL HOURS OF ELEVATED STASILITY CLASS A 0.000 -
l METEOROLOGICAL FACILITY: Brouns Ferry Nuclear Plant .
STASILITY BASED ON DELTA T BETWEEN 45.30 AND 89.59 METERS Wim DIRECTION MEASURED AT. 45.67 METER LEVEL l
L Wim SPEED MEASURED AT 45.67 NETER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 19990209 NOTE : TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS U
. E2-91 l
o
SPLif JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECT!ON FOR STABILITY CLASS B ( 1.9< DELTA Tc= 1.7 C/100 M)
Brouns Ferry Nuclear Plant PART 2 0F 2 ELEVATED RELEASE MODE OCT, 1, 1998 DEC 31, 1998 WIND _
WIND SPEED (MPN)
-DIRECTION CALM 0.6-1.4 . 1.5 3.4 3.5 5.4 5.5 7.4 7.5 12.4 12.5-18.4 18.5 24.4 >=24.5 TOTAL M 0.000 :0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NNE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NE 0.000 0,000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ENE 0.000' O.000 ' O.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000- 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.000 0.000 0.0f ') 0.000 0.000 0.000 0.000 SE 0.000 - 0.000 ' O.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SSE 0.000 0.000 0.000' O.000 0.047 - 0.000 0.000 0.000 0.000 0.047 s 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SSW - .0.000 0.000 0.000 0.000 0.000 0.000- 0.000 0.000 0.000 0.000 SW 0.000 0.000' O.000 0.048 0.000 0.000 0.000 0.000 0.000 0.048 WSW 0.000 0.000 0.000 0.000 0.000 0.044 0.000 0.000 0.000 0.044 W 0.000 .0.000 0.000 0.000 0.000- 0.000 0.000 0.000 0.000 0.000 WWW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NW 0.000 0.000 .0.000 0.000. 0.000 0.000 - 0.000 0.000 0.000 0.000 NNW 0.000 'O.000 0.000 'O.000 0.000 0.000 0.000 0.000 0.000 0.000
' SUBTOTAL 0.000 0.000 0.000 0.048 0.047 0.044 0.000 0.000 0.000 0.138 TOTAL HOURS OF VALID OBSERVATIONS . 2105.000 TOTAL NOURS OF ELEVATED RELEASES 1903.600 TOTAL NOURS OF STABILITY CLASS B- 7.090 TOTAL HOURS OF ELEVATED STABILITY CLASS B 2.910
- METEOROLOGICAL FACILITY: Scouns Ferry Nuclear Plant STA5tLITY BASED ON DELTA T BETWEEN 45.30 AND 89.59 METERS WIND DIRECTION MEASURED AT 45.67 N!TER LEVEL WIND SPEED MEASURED AT 45.67 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 19990209 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-92 L
SPLIT J0!NT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIREC710N FOR STABILITY CLASS C'-( 1.7< DELTA T<= 1.5 C/100 M) e Browns Ferry Nuclear Plant PART 2 of 2 ELEVATED RELEASE NODE OCT 1,~ 1996 DEC 31, 1996' WIND WIND SPEED (MPN)
DIRECT!0NJ CALM 0.6 1.4 1.5 3.4 3.5 5.4 5.5 7.4 7.5 12.4 12.5 18.4 18.5-24.4 >=24.5' TOTAL
.N 0.000 0.000 - 0.000' O.000 0.000 0.040 0.079 0.000 0.000 0.119 NNE 0.000 0.000 0.000 0.000 0.000 0.081 0.038 0.038 0.000 0.157 NE ~ 0.000 0.000 0.000 0.000 0.000 0.000 0.000 .0.000 0.000 0.000 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000
-E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 -0.000 0.000 ESE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ,
. SE 0.000 0.000 0.000 0.000 0.000 -0.000 0.000 0.000 0.000 0.000 .
SSE 0.000 0.000 0.000 0.000 0.000 0.000 0.038 0.000 0.000 0.038
.5- 0.000 0.000 0.000 0.000 0.000' O.000 0.000 0.000 0.000 0.000
$$W 0.000 0.000 0.000 0.000 0.000 - 0.000 0.000 0.000 0.000 0.000 SW 0.000 - 0.000 0.000 0.143 0.000 0.041 0.000 0.000 0.000 0.184 WSW 0.000 ~0.000 0.000 0.048 ' O.000 0.000 0.000 0.000 0.000 0.048 W 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000
'WWW ~ 0.000 0.000 0.000 0.000 0.000 0.042 0.000 0.000 . 0.000 0.042
. NW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NNW 0.000 0.000 0.000 'O.000 0.000 0.000 0.000 0.000 0.000 0.000 SUBTOTAL 0.000 0.000 0.000 0.190 0.000 0.204 0.156 0.038 0.000 0.587 l
I l
TOTAL HOURS OF VALID OBSERVATIONS 2105.000 l 70TAL HOURS OF ELEVATED RELEASES 1903.600 TOTAL HOURS OF. STABILITY CLASS C 18.470 TOTAL NOURS OF ELEVATED STASILITY CLASS C 12.360 -
METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant l STABILITY BASED ON DELTA T SETWEEN 45.30 AND 89.59 METERS !
< WIND DIRECTION MEASURED AT 45.67 METER LEVEL WIND SPEED MEASURED AT 45.67 METER LEVEL j EFFLUENT VELOCITY = 12.60 N/s -
DATE PRINTED: 19990209 l
NOTE: ~ TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2 93 -
W i% ,
SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR i'- '
I
. j i ' STABILITY CLASS D ~ '(*1.5< DELTA T<= 0.5 C/100 M)-
o '
Browns Ferry Nuclear Plant PART 2 of 2 ELEVATED RELEASE MODE l t
OCT 1, 1998 - DEC 31, 1998 3
Wie ' Wi m SPEED (MPN)
DIRECTION CALM 0.6 1.4 1.5 3.4 3.5 5.4 - 5.5 7.4 7.5 12.4 12.5 18.4 18.5 24.4 n24.5 TOTAL N r 10.000 0.000 0.095 0.380 0.590 -2.639 0.895 0.051' O.000 4.649 NNE .0.000 0.095 0.095 0.238. 1.046 2.357. 1.276 0.066 0.000 5.171 NE . 0.000 0.000 0.285 0.665 0.501 1.129. 0.155 0.000 0.000 2.734 ENE 0.000 0.000 .0.238 0.428 0.415 0.251 'O.039 0.000 0.000 1.371 E 0.000 0.000 0.190 0.285 0.185 0.335 0.000 0.000 0.000 0.995 ESE 0.000 0.048 0.333- 0.523 0.600 0.166 0.000 0.000 0.000 1.668
- SE - 0.000 0.048 0.760 :0.808 0.502 1.077 0.657 0.318 0.000 4.169
$$E 0.000 0.048 0.713' O.380 0.554 1.571 2.503 0.362 0.011 6.341 S 0.000 0.000 0.570 0.570 0.227 1.073 2.042 0.329 0.003 4.814 SSW - 0.000 0.048 0.285 0.238 0.047 0.408 0.542 0.092 0.000 1.658 i SW 0.000 0.000 0.190 0.475 0.000 'O.454 0.116 0.000 0.000 1.235 i
WSW 0.000- 0.000 0.333 0.333 0.045 0.246 0.116 -0.000 0.000 1.0 72 l
W' O.000 0.000 0.143 0.285 0.413 0.716 0.078 0.000 0.000 1.634 WNW '0.000 0.000 -0.380 0.238 0.415 0.538 0.155 0.016 0.000 1.742 i
,.t - NW 0.000 O.000 0.095 0.523 0.498 1.505 0.772 0.216 0.000 3.609 )
NNW .0.000 0.048 0.190 0.380 0.547 2.090 0.930 0.100 0.009 4.294 l
!- I L SueTOTAL 0.000- 0.333 4.893 . 6.746 6.583 16.554 10.275 1.750 0.023 47.157 i'
i l
l TOTAL MOURS OF VALID OBSERVAT!0NS 2105.000 l ' TOTAL HOURS OF ELEVATED RELEASEE- 1903.600 I- TOTAL HOUk$ OF STABILITY CLASS D 1060.780 l TOTAL HOURS OF ELEVATED STABILITY CLASS D 992.660 l
METEOROLOGICAL FACILITY:' Browns Ferry Nuclear Plant I
STABILITY BASED ON DELTA *T BETWEEN 45.30 AND' 89.59 METERS WIN DIRECTION psamisasn AT 45.67 METER LEVEL WIS SPEED MEASURED AT 45.67 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 19990209 NOTE:' TOTALS AND SUBTOTi.LS ARE OSTAINED FROM UNROUNDED NUMBERS E2-94
SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WINO DIRECTION FOR STABILITY CLASS E (-0.5< DELTA Tc= 1.5 C/100 M)
Browns Ferry Nuclear Plant PART 2 0F 2 ELEVATED RELEASE MODE OCT 1, 1998 - DEC 31, 1998 i
WIND WIND SPEED (MPH) l DIRECTION CALM 0.6 1.4 1.5-3.? 3.5-5.4 5.5 7.4 7.5 12.4 12.5-18.4 18.5-24.4 >=24.5 TOTAL ]
l N 0.000 0.000 0.048 0.190 0.229 1.405 0.117 0.000 0.000 1.988 NNE 0.000 0.048 0.190 0.238 0.274 1.171 0.2 73 0.000 0.000 2.193 NE 0.000 0.000 0.380 0.618 0.452 0.884 0.U39 0.000 0.000 2.3 73 ENE 0.000 0.000 0.190 0.143 0.183 0.497 0.000 0.000 0.000 1.013
]
E 0.000 0.000 0.238 0.428 0.545 0.124 0.000 0.000 0.000 1.334 4 ESE 0.000 0.095 0.190 0.808 0.919 0.419 0.000 0.000 0.000 2.430 SE 0.000 0.000 0.475 1.140 0.968 1.440 0.156 0.038 0.000 4.218 l SSE 0.000 0.095 0.428 0.475 0.510 0.947 0.739 0.166 0.000 3.359 8 0.000 0.000 0.285 0.190 0.370 1.232 0.270 0.000 0.000 2.347 SSW 0.000 0.048 0.095 0.095 0.048 0.209 0.079 0.000 0.000 0.5 73 j SW 0.000 0.048 0.095 0.048 0.000 0.327 0.000 0.000 0.000 0.517 l WSW 0.000 0.048 0.095 0.143 0.137 0.042 0.000 0.000 0.000 0.464 l W 0.000~ O.000 0.048 0.238 0.141 0.000 0.000 0.000 0.000 0.426 WWW 0.000 0.000 0.143 0.285 0.141 0.043 0.000 0.000 0.000 0.611 NW 0.000 0.000 0.190 0.333 0.185 0.380 0.039 0.000 0.000 1.126 NNW 0.000 0.000 0.238 0.143 0.461 0.834 0.079 0.000 0.000 1.754
$UST07AL 0.000 0.380 3.325 5.511 5.562 9.953 1.791 0.203 0.000 26.726 i
TOTAL HOURS OF VAL!O 00 SERVAT!0NS 2105.000 TOTAL HOURS OF ELEVATED RELEASES 1903.600 TOTAL HOURS OF STABILITY CLASS E 625.640 TOTAL HOURS OF ELEVATED STASILITY CLASS E 562.590 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STASILITY 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: 19990209 1
l NOTE: TOTALS AND SUBTOTALS ARE OSTAINED FROM UNROUNDED NUMBERS E2-95
l
{
SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WINO DIRECTION FOR f
STASILITY CLASS F ( 1.5< DELTA T< 4.0 C/100 M)
- l. Browns Ferry Nuclear Plant PART 2 0F 2 ELEVATED RELEASE MODE OCT 1, 1998 - DEC 31, 1998 1
i WINO WIND SPEED (MPN)
DIRECT!0N . CALM 0.6-1.4 1.5 3.4 3.5-5.4 5.5 7.4 7.5 12.4 12.5 18.4 18.5 24.4 >=24.5 TOTAL i
N 0.000 0.000- 0.048 0.048 0.139 0.455 0.039 0.000 0.000 0.728 NNE 0.000 0.000 0.048 0.000 0.046 0.831 0.197 0.000 0.000 1.122
'NE 0.000 0.000 0.048 0.190 0.182 0.498 0.157 0.000 0.000 1.075 ENE 0.000 0.048 0.048- 0.095 0.047 0.248 0.000 0.000 0.000 0.485 E- 0.000 0.048 0.143 0.238 0.093 0.422 0.000 0.000 0.000 0.943 ESE 0.000 0.048 0.238 0.238 0.454 0.427 0.000 0.000 0.000 1.404 SE 0.000 0.048 0.238 0.238 0.232 0.044 0.000 0.000 0.000 0.799 SSE 0.000 0.000 0.048 0.333 0.046 0.000 0.000 0.000 0.000 0.426 S. 0.000~ 0.000 0.190 0.285 0.092 0.334 0.000 0.000 0.000 0.901 SSW 0.000 0.048 'O.143 0.143 0.046 0.043 0.000 0.000 0.000 0.421 SW 0.000 0.000 0.095 0.000 0.046 0.000 0.000 0.000 0.000 0.141 WSW 0.000 0.000 0.095 0.000 0.000 0.000 0.000 0.000 0.000 0.095 W 0.000 0.000 0.143 0.143 0.000 0.000 0.000 0.000 0.000 0.285 WNW 0.000 0.048 0.190 0.190 0.000 0.000 0.000 0.000 0.000 0.428 NW 0.000 0.000 0.048 0.095 0.047 0.000 0. 2 0.000 0.000 0.190 NNW 0.000 0.000 0.000 0.095 0.045 0.040 0.000 0.000 0.000 0.180 l
SU5 TOTAL 0.000 0.285 1.758 2.328 1.515 3.342 0.393 0.000 0.000 9.620 TOTAL HOURS OF VALID OBSERVATIONS 2105.000 TOTAL HOURS OF ELEVATED RELEASES 1903.600 TOTAL MOURS OF STABILITY CLASS F 231.550 TOTAL HO'AS OF ELEVATED STABILITY CLASS F 202.510 -
l l
METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITT BASED ON DELTA T BETWEEN 45.30 AND 89.59 METERS l WIND DIRECTION MEASURED AT 45.67 METER LEVEL WIND SPEED MEASURED AT 45.67 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S' DATE PRINTED: 19990209 t-l-
NOTE: TOTALS AND SUST0TALS ARE 00TAINED FROM UNROUNDED NUMBERS E2-96
l l
3 i SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED SY WIW DIRECTION FOR 1 l
STABILITY CLASS G (DELTA T > 4.0 C/100 M)
Browns Ferry Nucteer Plant PART 2 0F 2 ELEVATED RELEASE MODE f l
OCT 1, 1998 - DEC 31, 1998 t .
Wim WIW SPEED (MPM)
DIRECTION CALM 0.61.4' 1.5 3.4 3.5 5.4 5.5 7.4 7.5-12.4 12.5 18.4 18.5 24.4 >=24.5 TOTAL N 0.000 0.000 0.000 0.048 0.046 0.086 0.000 0.000 0.000 4.180 NNE 0.000 ;0.000 0.048 0.095 0.000 0.453 0.078 0.000 0.000 0.674 NE 0.000 0.048 0.000 0.048 0.455 0.458 0.039 0.000 0.000 1.048 ENE 0.000 0.000- 0.000 0.143 0.091 0.165 0.000 0.000 0.000 0.399 E 0.000 0.048 0.048 0.048 0.046 0.128 0.000 0.000 0.000 0.317 ESE 0.000 0.048 0.238 0.095 0.139 0.043 0.000 0.000 0.000 0.562 i SE 0.000 0.143 0.855 0.618 0.139 0.000 0.000 0.000 0.000 1.754
$$E 0.000 0.000 0.285 0.143 0.046 0.041 0.000 0.000 0.000 0.514 j S 0.000 0.000 0.095 0.143 0.000 0.043 0.000 0.000 0.000 0.281 j SSW 0.000 0.000 0.000' - 0.048 0.047 0.000 0.000 0.000 0.000 0.094 .
SW 0.000 - 0.000 0.095 0.000 0.000 0.000 0.000 0.000 0.000 0.095 ;
WSW 0.000 0.000 0.095 0.000 0.000 0.000 0.000 0.000 0.000 0.095 W 0.000 0.000 0.048 0.095 0.048 0.000 0.000 0.000- 0.000 0.190 WNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NW 0.'000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SUBTOTAL 0.000 0.285 1.805 1.520 1.056 1.419 0.117 0.000 0.000 6.203 TOTAL MOURP OF VALID OBSERVATIONS 2105.000 TOTAL HOURS OF ELEVATED RELEASES 1903.600 TOTAL HOURS OF STASILITY CLASS G 148.540 TOTAL NOUR$ OF ELEVATED STABILITY CLASS G 130.570 .
1 METEOROLOGICAL FACILITY: Browns Ferry Nucteer Plant STABILITY BASED ON DELTA T SETnEEN 45.30 A m 89.59 METERS WI W O!RECTION MEASURED AT 45.67 METER LEVEL W!W SPEED MEASURED AT 45.67 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 19990209 NOTE: TOTALS AND SUBTOTALS ARE OSTA!NED FROM UNROUNDED NUMBERS E2-97
p RrdiologicalImpact Assessment.
Br:wns Ferry Nuclear Plant January - December 1998 Table 22
' Joint Frequency Distribution in Percent for Elevated Releases First Quarter I
1 1
1
.1
'1 1
c .
L E2-98
l JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS A (DELTA T<= 1.9 C/100 M)
Browns Ferry Nuclear Plant JAN 1, 96 MAR 31, 96 WIN Wim SPEED (MPN)
DIRECTION CALM 0.6-1.4 1.5 3.4 3.5-5.4 5.5 7.4 7.5 12.4 12.5 18.4 18.5 24.4 n24.5 TOTAL N 0.000 0.000 0.000 0.000 -0.000 0.000 0.000 0.000 0.000 0.000 NME 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ENE - 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E' O.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 1 SE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SSE 0.000 0.000- 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 S 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WWW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000
'NW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SUBTOTAL 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 TOTAL HOURS OF VALIO STABILITY OBSERVAT10NS TOTAL NOURS OF STABILITY CLASS A 2118 0
)
1 TOTAL HOURS OF VALID WI S DIRECTION WI S SPEED-STABILITY CLASS A 0 j TOTAL NOURS OF VALID WI N DIRECTION-WI N SPEED STABILITY OBSERVATIONS 2114 1 TOTAL HOURS CALM 0 I l
I METEOROLOGICAL FACILITY: Browns Ferry Nucteer Plant STABILITY BASED ON DELTA T BETWEEN 45.30 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT 92.63 METER LEVEL DATE PRINTED: 24 Apr 98 MEAN WIND SPEED = 0.00 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-99
V l I
l J0!NT PERCEWTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR 1
STABILITY CLASS B (-1.9< DELTA T<= 1.7 C/100 M) l Browns Ferry Nuclear Plant JAN 1, 98 - MAR 31, 98 WIW WIND SPEED (MPH)
DIRECTION CALM 0.6 1.4 1.5 3.4 3.5 5.4 5.5 7.4 7.5-12.4 12.5 18.4 18.5-24.4 >=24.5 TOTAL M 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NNE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ENE 0.000 0.000 0.000 0.000 0,000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 l
ESE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SSE - 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 S 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SW 0.000 0.000 0.000 0.000 0.000 0.047 0.000 0.000 0.000 0.047 WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W 0.000 0.000 0.000 0.000 0.000 0.000 0.095 0.000 0.000 0.095 WNW 0.000 0.000 0.000 0.000 0.000 0.000 0.095 0.000 0.000 0.095 W 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SUBTOTAL 0.000 0.000 0.000 0.000 0.000 0.047 0.189 0.000 0.000 0.237 TOTAL NOURS OF VALID STABILITY CBSERVATIONS 2118 TOTAL NOURS OF STASILITY CLASS B 5 TOTAL NOURS OF VALID Wim DIRECTION-WI S SPEED STABILITY CLASS B 5 TOTAL NOURS OF VALID WIS DIRECTION WIN SPEED-STABILITY OBSERV4TIONS 2114 TOTAL NOURS CALM 0 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY SASED ON DELTA-T SETWEEN 45.30 AW 89.59 METERS WIW SPEED AND DIRECTION MEASURED AT 92.63 METER LEVTL DATE PRINTED: 24 Apr 98 MEAN WIN SPEED = 13.18 NOTE: TOTALS A W SUIT 0TALS ARE OSTAINED FROM UNROUNDEO NUMBERS E2-100
l I
JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WI M DIRECTION FOR STABILITY CLASS C (-1.74 DELTA Tc= 1.5 C/100 M)
Browns Ferry Nuclear Plant j JAN 1, 96 - MAR 31, 98 Wim WIND SPElep M )
DIRECTION - CALM 0.6 1.4 f.5 3.4 3.5 5.4 5.5 1.4 7.5 12.4 1?.5 18.4 18.5 24.4 >=24.5 TOTAL N 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NME 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 )
ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.000 0.000 0.047 0.000 0.000 0.000 0.047 SE 0.000 0.000 0.000 0.095 0.000 0.000 0.000 0.000 0.000 0.09$ i SO 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 l
5 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 l 0.000 0.000 0.000 0.000 0.000 SSW 0.000 0.000 0.000 0.000 0.000 )
SW 0.000 0.000 0.000 0.095 0.047 0.000 0.000 0.000 0.000 0.142
{
WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W 0.000 0.000 0.000 0.000 0.000 0.095 0.095 0.000 0.000 0.189 WWW - 0.000 0.000 0.000 0.000 0.000 0.047 0.142 0.000 0.000 0.189 l WW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SU5 TOTAL 0.000 0.000 0.000 0.189 0.047 0.189 0.237 0.000 0.000 0.662 TOTAL NOURS OF VALID STABILITY OBSERVATIONS 2118 TOTAL NOURS OF STABILITY CLASS C 14 l
TOTAL NOURS OF VALIO WI S DIRECTION-W!m SPEED STA81LITY CLASS C 14 1 TOTAL NOURS OF VALID WI N DIRECTION W!n SPEED STABILITY OBSERVATIONS 2114 TOTAL HOURS CALM. 0 l
t l
NETEOR0 LOGICAL FACILITY: Brouns Ferry Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 45.30 AND 89.59 METERS WIN SPEED AND DIRECTION MEASURED AT 92.63 METER LEVEL DATE PRINTED: 24 Apr-98 j MEAR W1m SPEED = 10.22 NOTE: TOTALS AND SUBTOTALS ARE OSTAINED FROM UNROUNDED NUMBERS l
E2-101
JOINT PERCENTAGE FREGUENCIES OF WI M SPEED BY Wie DIRECTION FOR STASILITY CLASS D ( 1.5< DELTA T<= 0.5 C/100 N)
Browns Ferry Nucteer Plant JAN 1, 98 MAR 31, 98 WIS WIN SPEED (NPN)
DIRECTION CALN 0.61.4- 1.5 3.4 3.5 5.4 5.5 7.4 7.5 12.4 12.5 18.4 18.5 24.4 >=24.5 TOTAL N 0.000 0.000- 0.095 0.095 0.710 2.176 0.757 0.189 0.615 4.636 NME 0.000 0.047 0.142 0.237 0.520 1.419 0.993 0.331 0.047 3.73 7 NE 0.000 0.000 0.047 0.095 0.142 1.561 0.615 0.804 0.000 -3.264 ENE 0.000 0.000- 0.237 0.095 0.189 0.804 0.142 0.095 0.000 1.561 E 0.000 0.000 0.142 0.378 0.378 0.851 0.673 0.095 0.047 2.365 ESE 0.000 0.000 0.900 0.142 0.189 1.230 2.365 0.662 0.710 5.298 SE 0.000 0.000 0.142 0.331 0.331 0.520 1.703 1.372 1.230 5.629 SSE 0.000 0.000* 0.189 0.189 0.237 1.325 1.372 0.237 0.047 3.595 8 0.000 0.000 0.095 ' O.142 0.189 0.899 1.088 1.005 0.520 4.021 SW - 0.000 0.047 0.000 0.331 0.095 0.237 0.946 0.426 0.095 2.176 sW 0.000 0.047 0.095 0.142 0.189 0.284 0.331 0.473 0.284 1.845 4 WsW 0.000 0.047 0.142 0.331 0.237 0.473 1.514 0.993 0.378 4.115 W 0.000 0.000 0.000 0.142 0.237 1.135 1.135 0.899 0.378 3.926 WNW' O.000 0.000 0.047 0.331 0.237 1.798 1.466 0.851 0.000 4.730 NW 0.000 0.000 0.095 0.189 0.331 1.372 2.744 1.183 0.047 5.960 NNW 0.000 0.000 0.047 0.189 0.473 2.2 71 2.034 0.710 0.520 6.244
'susT0TAL 0.000 0.189 1.514 3.359 4.683 18.354 19.678 10.407 4.920 63.103 TOTAL NOUR$ OF VALID STABILITY 08SERVATIONS , 2118 TOTAL NOURS OF STABILITY CLASS O 1336 TOTAL NOURS OF VALID WI N DIRECTION Wi m SPEED STABILITY CLASS D 1334 TOTAL NOURS OF VALID WIS DIRECTION WIN SPEED STABILITY OBSERVATIONS 2114 TOTAL NOUR$ CALN O METEOROLOGICAL FACILITY: Srouns Ferry Nuclear Plant STABILITY OASED ON DELTA T BETWEN 45.30 AM 89.59 NETERS WIND SPEED AND DIRECT 10N NEASURED AT 92.63 NETER LEVEL DATE PRINTED: 24 Apr 98 NEAN WIN SPEED = 14.24 NOTE: TOTALS AW SUBTOTALS ARE OBTAINED FR(31 UNROUWED IRSIBER$
E2-102 L. ..
JCINT PEkCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FCt STASILITY CLASS E ( 0.5< DELTA T<= 1.5 C/100 M)
Browns Ferry Nuclear Plant JAN 1, 98 - MAR 31, 98 e
WIND WIN SPEED (MPN)
DIRECTION CALM 0.6 1.4 1.5 3.4 3.5 5.4 5.5-7.4 7.5 12.4 12.5 18.4 18.5 24.4 >=24.5 TOTAL N 0.000 0.000 0.000 0.237 0.095 0.757 0.284 0.047 0.047 1.466 NNE 0.000 0.000 0.047 0.142 0.095 0.426 0.378 0.000 0.000 1.088 NE 0.000 0.000 0.047 0.095 0.095 0.473 0.142 0.095 0.000 0.946 ENE 0.000 0.000 0.047 0.189 0.142 0.520 0.237 0.000 0.000 1.135 E 0.000 0.000 0.047 0.095 0.047 0.331 0.284 0.000 0.000 0.804 ESE 0.000 0.000 0.000 0.142 0.237 0.662 0.804 0.4 73 0.284 2.602 SE 0.000 0.047 0.000 0.095 0.284 1.135 2.696 1.372 0.946 6.575 SSE 0.000 0.000 0.189 0.142 0.284 1.135 2.602 1.041 0.4 73 5.866 3 0.000 0.000 0.047 0.047 0.000 0.615 2.129 0.993 0.142 3.974 SSW 0.000 0.000 0.000 0.000 0.047 0.284 0.473 0.095 0.047 0.946 SW 0.000 0.000 0.000 0.095 0.095 0.284 0.378 0.047 0.000 0.899 WSW 0.000 0.047 0.000 0.142 0.047 0.662 0.095 0.000 0.000 0.993 W 0.000 0.000 0.047 0.047 0.095 0.237 0.142 0.000 0.000 0.568 WNW 0.000 0.000 0.000 0.189 0.142 0.426 0.047 0.000 0.000 0.804 w 0.000 0.000 0.000 0.047 0.189 0.804 0.804 0.047 0.000 1.892 NW 0.000 0.000 0.047 0.189 0.000 0.378 0.473 0.189 0.000 1.277 SUBTOTAL 0.000 0.095 0.520 1.892 1.892 9.130 11.968 4.399 1.939 31.835 TOTAL NOURS OF VALID STABILITY OBSERVATIONS 2118 TOTAL HOURS OF STABILITY CLASS E 675 TOTAL NOURS OF VALIO WI M DIRECTION WI M SPEED-STABILITY CLASS E 673
' TOTAL NOURS OF VALID WI N CIRECTION WI N SPEED STABILITY OBSERVATIONS 2114 TOTAL NOURS CALM 0 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA T BETWEN 45.30 AND 89.59 METERS WIN SPEED AW DIRECTION MASURED AT 92.63 METER LEVEL DATE PRINTED: 24 Apr 98 MEAN WIN SPEED = 14.02 NOTE: TOTALS AND SUBT0TALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-103
b r
l JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR l STABILITY CLASS F ( 1.5< DELTA T<= 4.0 C/100 M)
! Browns Ferry Nuclear Plant JAN 1, 96 MAR 31, 96 WIM WIND SPEED (MPH)
DIRECTION CALM 0.6-1.4 1.5-3.4 3.$ 5.4 5.5 7.4 7.5 12.4 12.5 18.4 18.5 24.4 >=24.5 TOTAL N 0.000 0.000 0.000 0.047 0.000 0.095 0.000 0.000 0.000 0.142 l ME 0.000 0.000 0.000 0.000 0.000 0.000 0.095 0.000 0.000 0.095 I NE 0.000 0.000 0.047 0.000 0.000 0.000 0.000 0.000 0.000 0.047 ENE 0.000 0.000 0.000 0.000 0.000 0.047 0.000 0.000 0.000 0.047 E 0.000 0.000 0.000 0.000 0.047 0.095 0.142 0.095 0.000 0.378 l ESE 0.000 0.000 0.000 0.000 0.047 0.142 0.331 0.142 0.000 0.662 SE 0.000 0.000 0.047 0.000 0.000 0.047 0.23 7 0.047 0.000 0.378 SJ 0.000 0.000 0.047 0.000 0.047 0.000 0.473 0.000 0.000 0.568 5 0.000 0.000 0.000 0.047 0.047 0.047 0.000 0.000 0.000 0.142 SSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SW 0.000 0.000 0.000 0.000 0.095 0.095 0.237 0.000 0.000 0.426 WSW 0.000 0.000 0.000 0.047 0.047 0.000 0.000 0.000 0.000 0.095 I W 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WWW 0.00C 0.000 0.000 0.095 0.047 0.047 0.000 0.000 0.000 0.189 W 0.000 0.000 0.000 0.047 0.095 0.047 0.000 0.000 0.000 0.189 NW 0.000 0.047 0.000 0.095 0.095 0.095 0.000 0.000 0.000 0.331 l
SUBTOTAL 0.000 0.047 0.142 0.378 0.568 0.75 7 1.514 0.284 0.000 3.690 TOTAL HOURS OF VALID STABILITY OSSERVAT!cNS 2118 TOTAL N0JRS OF STABILITY CLASS F 78 TOTAL HOURS OF VALID WIND DIRECTION WIN SPEED STABILITY CLASS F 78 TOTAL NOURS OF VALID WIND DIRECTION-WIND SPEED STABILITY OSSERVATIONS 2114 i TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: Browns Ferry Nucteer Plant STABILITY BASED ON DELTA T BETWEEN 45.30 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT 92.63 METER LEVEL DATE PRINTED: 24-Apr 98 MEAN Wi m SPEED = 11.42 l
NOTE: TOTALS Am SUBTOTALS ARE 0 STAINED FROM UNROUNDED NUMBERS E2-104
JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS G (DELTA T > 4.0 C/100 M)
Browns Ferry Nuclear Plant l
JAN 1, 98 MAR 31, 98 i l
l l
l WIN WIND SPEED (MPM) l DIRECTION CALM 0.6-1.4 1.5 3.4 3.5-5.4 5.57.4 7.5-12.4 12.5 18.4 18.5 24.4 >=24.5 TOTAL l
l N 0.000 0.000 0.000 0.000 0.000 0.000 0.047 0.000 0.000 0.047 l 1
NNE 0.000 0.000 0.000 0.000 0.000 0.000 0.047 0.000 0.000 0.047 l NE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.095 0.000 0.000 0.000 0.000 0.000 0.095 l ESE 0.000 0.000 0.000 0.000 0.000 0.047 0.000 0.000 0.000 0.047 SE 0.000 0.000 0.000 0.000 0.000 0.047 0.047 0.000 0.000 0.095 SSE- 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 S' O.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000. 0.000 l SW 0.000 0.000 0.000 0.000 0.000 0.000 0.095 0.000 0.000 0.095 WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 I WNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NNW 0.000 0.000 0.000 0.000 0.047 0.000 0.000 0.000 0.000 0.047 SUBTOTAL 0.000 0.000 0.000 0.095 0.047 0.095 0.237 0.000 0.000 0.4 73 TOTAL HOUR $ OF VALID STABILITY OBSERVATIONS 2118 TOTAL HOURS OF STABILITY CLASS G 10 TOTAL HOURS OF VALID WI S DIRECTION WIN SPEED STASILITY CLASS G 10 TOTAL NOUR$ OF VALID WI N DIRECTION-WIND SPEED STASILITY OBSERVATIONS 2114 TOTAL NOURS CALM 0 METEOROLOGICAL FACILITY: Browns Ferry Nucteer Plant STABILITY BASED tm DELTA T SETWEEN 45.30 AM 89.59 METERS W12 SPEED AND DIRECTION MEASURED AT 92.63 METER LEVEL DATE PRINTED: 24 Apr 98 MEAN Wim SPEED = 11.42 NOTE: TOTALS AW SUBTOTALS ARE osTAINED FROM UNROUNDED NUMBERS E2-105
n.
i Rcdiol:gicalImp:ct Assessment Brtwas F:rry N: clear Plant j January - December 1998 l
Table 23 Joint Frequency Distribution in Percent for Elevated Releases Second Quaner 1
I l
I i
E2-106 i
l JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR
! STA51LITY CLAS$ A (DELTA T<= 1.9 C/100 N)
Browns Ferry Nuclear Plant I. APR 1,"1998 - JUN 30, 1998 WIND WIND SPEED (MPH) i DIRECTION- CALM 0.6 1.4 1.5 3.4 3.5 5.4 5.5 7.4 7.5 12.4 12.5 18.4 18.5 24.4 >=24.5 TOTAL l
]
N 0.000 0.000 0.000' O.000 0.000 0.000 0.000 0.000 0.000 0.000 l
]
NNE 0.000 .0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 I
'O.000 0.000 0.000 I
NE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 '
ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 1 ESE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000
! SE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 .-
$$E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 S 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000
$$W 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SW 0.000 0.000' O.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 )'
WSW- 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WWW 0.000 0.000 0.000 .0.000 0.000 0.000 0.000 0.000 0.000 0.000 NW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 l SUBTOTAL 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 TOTAL HOURS OF VALID STA81LITY OSSERVATIONS 2038 TOTAL HOURS OF STA81LITY CLASS A 0 l
)
l TOTAL HOURS Of VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS A 0 l TOTAL HOURS OF VAllD WIND DIRECTION WIND SPEED STABILITY OSSERVATIONS 1846 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA T BETWEEN 45.30 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT 92.63 METER LEVEL DATE PRINTED: 19980720 MEAN WIND SPEED = 0.00 NOTE: TOTALS AND SueTOTALS ARE OSTAINED FROM UNROUNDED NUMBERS E2-107
JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BT WIND DIRECTION FOR STASILITV' CLASS B ( 1.9< DELTA' T=24.5 TOTAL iN- 0.000 'O.000 0.000 0.000 0.000 0.000 0.000' O.000 0.000 0.000 NNE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ,
NE- 'O.000 0.000 - 0.000 0.000 0.000- 0.000 0.000 0.000 0.000 0.000 ENE . 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E, 0.000 0.000 ~0.000 0.000 0.C00 0.000 0.000 0.000 0.000 0.000
- ESE 0.000' O.000 0.000- 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SE ' O.000 0.000 0.000 0.000 0.000 0.000 'O.000 0.000 0.000 .0.000
$$E 0.000 0.000 .0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000
~S 0.000 0.000. 0.000 0.000 'O.000 0.000 0.000 0.000 0.000 0.000 SSW 0.000 ' O.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SW 0.000 0.000 0.000 0.000 0.000- 0.000 0.000 0.000 0.000 0.000 WSW. 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 )
W- 0.000 - 0.000 0.000 0.000 0.000 0.000 'O.000 0.000 0.000 0.000 WWW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000
. NW 0.000 0.000 0.000 0.000 0.000 0.000 0.001 0.000 0.000 0.000 i NNW 0.000 . 0.000 ' .0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000
-]
SUBTOTAL; 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 TOTAL HOURS OF VALID STABILITY OBSERVAfloNS 2038 i
. TOTAL HOURS OF STABILITY CLASS B 1 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED STASILITY C1 ASS B 0 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED STASILITY OSSERVATIONS 1846 TOTAL HOURS CALM 0 METEOROLOGICAL' FACILITY: Browns Ferry Nuclear Plant
- STABILITY BASED ON DELTA-T BETWEEN 45.30 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT 92.63 METER LEVEL DATE PRINTED: 19980720 MEAN WIND SPEED = 8.50 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNRouNDED NUMBERS E2-108
J0lNT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR j l
STABILITY CLASS C (-1.7< DELTA Tc=-1.5 C/100 M)
Browns Ferry Nuclear Plant APR 1, 1998 - JUN 30, 1998 WIND WIND SPEED (MPH)
DIRECTION CALM 0.6 1.4 1.5 3.4 3.5-5.4 5.5 7.4 7.5 12.4 12.5-18.4 18.5 24.4 >=24.5 TOTAL N 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NNE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE ' 0.000 0.000 0.000 0.000 0.054 0.000 0.108 0.054 0.000 0.217 )
SE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SSE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000
$ 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 l SW 0.000 0.000 0.000 0.000 0.054 0.000 0.054 0.000 0.000 0.108 I
.WSW 0.000 0.000 0.000 0.000 0.000 0.054 0.000 0.000 0.000 0.054 W 0.000 0.000 0.000 0.000 0.000 0.054 0.000 0.000 0.000 0.054 WNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 MW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SueTOTAL 0.000 0.000 0.000 0.000 0.108 0.108 0.163 0.054 0.000 0.433 TOTAL HOURS OF VALID STASILITY OBSERVATIONS 2038 l TOTAL HOURS OF STABILITY CLASS C 8 l TOTAL HOURS OF VALID WI M DIRECTION WIND SPEED-STABILITY CLASS C 8 70TAL HOURS OF VALID WIND DIRECTION WIND SPEED STABILITY OBSERVATIONS 1846 TOTAL HOURS CALM 0 l l
-METEOROLOGICAL FACILITY: Browns Ferry Nucteer Plant l STABILITY BASED ON DCLTA T BETWEEN 45.30 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT 92.63 METER LEVEL DATE PRINTED: 19980720 MEAN WIND SPEED = 12.16 NOTE: TOTALS AND SUBTOTALS ARE osTAINED FROM UNROUNDED WUMSERS E2-109
m 1
.I
'J0lWT PERCENTAGE FREQUENCIES OF WIND SPEED SV WIND DIRECTION FOR STABILITY CLASS D ( 1.5< DELTA Tc= 0.5 C/100 N)
Browns Ferry Nuclear Plant-APR 1, 1998 JUN 30l 1998
- WIND Wim SPEED (MPN)
- DIRECTION CALM. 0.6 1.4 -1.5 3.4 3.5 5.4 5.5 7.4 7.5 12.4 12.5-18.4 18.5 24.4 n24.5 TOTAL
.N 0.000 0.000 0.108 0.054 0.271 0.867 1.246 0.000 0.000 2.546 NNE 0.000 0.000 0.054 0.217 0.433 '1.083 0.542 0.054 0.000 2.384 NE 0.000 0.000 0.000 0.271 0.163 - 0.650 .0.379 0.000 0.000 1.463 ENE 0.000 0.000 0.108 0.217 0.054 0.379 0.163 0.000 0.000 0.921 E 0.000 0.000 0.000 0.108 0.000 0.054 .0.163 - 0.000 0.000 0.325 ESE 'O.000 0.000 0.000 0.108 0.054 0.813 0.325 0.271 0.000 1.571 SE 0.000 0.000 0.704 0.542 0.325 0.542 0.704 0.758 0.433 4.009 SSE 0.000 0.000 0.379 0.325 0.163 0.758 1.463 0.163 0.000' 3.250 S. 'O.000 .0.000 0.271 0.271 0.488 0.921 1.463 1.192 0.704 5.309 SSW 0.000 0.000 0.217 0.163 0.542 0.975 2.059 1.625 0.163 5.742 ,
SW 0.000 0.000 0.379 0.433 0.217 1.896 2.817 1.083 0.000 6.826 WSW 0.000 0.000 0.108 ~0.975 .0.433 1.463 2.221- 1.083 0.488 6.771 W 0.000 0.000 0.000 1.192 0.704 1.8% 1.300 0.758 0.2 71 6.121 WNW 0.000 0.000 0.271' O.433 0.650 1.192 1.192- 1.083 0.108 4.930 W 0.000 0.000 0.054 0.488 0.650 1,842 1.138 1.246 0.163 5.580 MW 0.000 0.000 0.000 0.108 0.379 0.596 0.704 0.217 0.000 2.004
. i SusT0TAL 0.000 ' O.000 2.654 5.905 5.525 15.926 17.876 9.534 2.329 59.751 1 I
l TOTAL HOURS OF VALID STASILITY OBSERVATIONS 2038 TOTAL HOURS OF STASILITY CLASS D 1203 TOTAL HOURS OF VALID WIN DIRECTION WIND SPEED STAtiLITY CLASS D 1103 TOTAL HOURS OF, VALID WIND DIRECTION-WIND SPEED STASILITY OBSERVATIONS 1846 TOTAL HOURS CALM 0 METEOROLOGICAL' FACILITY:- Browns Ferry Nucteer Plant S7ASILITY BASED ON DELTA T BETWEEN 45.30 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT 92.63 METER LEVEL DATE PRINTED: 19980720 MEAN WIND SPEED = 12.26 I
' NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2110
I J
! l i
l-JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WINO DIRECTION FOR STASILITY CLASS E ( 0.5< DELTA T<= 1.5 C/100 M) .
i Browns Ferry Nuclear Plant l APR 1, 1998 - JUN 30, 1998 WIND WIND SPEED (MPH)
DIRECTION CALM 0.6 1.4 1.5 3.4 3.5 5.4 5.57.4 7.5 12.4 12.5 18.4 18.5 24.4 >=24.5 TOTAL N 0.000 0.000 0.163 0.217 0.325 0.433 0.542 0.000 0.000 1.679 l NME 0.000 0.000 0.000 0.000 0.108 0.108 0.108 0.000 0.054 0.379 WE 0.000 0.000 0.054 0.054 0.163 0.325 0.325 0.000 0.000 0.921 ENE 0.000 0.000 0.108 0.000 0.000 0.433 0.163 0.000 0.000 0.704 .
E 0.000 0.000 0.217 0,108 0.108 0.271 0.054 0.000 0.000 0.758 ESE 0.000 0.054 0.163 0.108 0.000 0.542 0.433 0.000 0.000 1.300 l SE 0.000 0.054 0.054 0.217 0.054 0.271 0.596 0.163 0.000 1.408 SSE 0.000 0.000 0.054 0.108 0.379 1.083 0.704 0.488 0.054 2.871 S 0.000 0.000 0.108 0.217 0.217 1.246 0.975 0.488 0.000 3.250 SSW 0.000 0.000 0.108 0.054 0.163 1.354 0.975 0.054 0.000 2.709
! SW 0.000 0.000 0.108 0.054 0.163 2.059 2.221 0.054 0.108 4.767 WSW 0.000 0.000 0.108 0.108 0.217 1.192 0.867 0.325 0.054 2.871 W 0.000 0.000 0.379 0.217 0.650 1.517 0.325 0.000 0.000 3.088 )
WNW 0.000 0.000 0.108 0.271 0.217 0.325 0.163 0.000 0.000 1.083 j NW 0.000 0.000 0.054 0.108 0.108 0.379 0.054 0.000 0.000 0.704 l NNW 0.000 0.000 0.054 0.108 0.054 0.325 0.379 0.054 0.000 0.975
$UBTOTAL 0.000 0.108 1.842 1.950. 2.925 11.863 8.884 1.625 0.271 29.469 1
TOTAL HOURS OF VALIO STABILITY OBSERVAfl0NS . 2038 TOTAL HOURS OF STABILITY CLASS E 623 TOTAL HOURS OF VALID WIND DIRECTION WIND SPEED STABILITY CLASS E 544 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVt.fl0NS 1846
! TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA T BETWEEN 45.30 AND 89.59 METERS r WTND SPEED AND DIRECTION MEASURED AT 92.63 METER LEVEL DATE PRINTED: 19980720 MEAN WINO SPEED e 10.62 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS j E2-Ill L
F i l
JOINT PERCENTAGE FREQUENCIES O'F WIND SPEED BY WIND DIRECTION FOR l
STABILITY CLASS F ( 1.5< DELTA Tc= 4.0 C/100 M)
Browns Ferry Nuclear Plant APR 1, 1998 - JUN 30, 1998 l
WIND WIND SPEED (MPH) l DIRECTION CALM 0.6 1.4 . 1.5 3.4 3.5 5.4 5.5 7.4 7.5 12.4 12.5 18.4 18.5 24.4 >=24.5 TOTAL l
N 0.000 0.000 0.054 0.054 0.000 0.108 0.596 0.054 0.000 0.867 NME 0.000 0.000 0.000 0.054 0.000 0.054 0.325 0.163 0.000 0.596 ;
NE 'O.000 0.000 0.054 0.000 0.054 0.000 0.163 0.000 0.000 0.271 ENE 0.000
- 000
. 0.054- 0.000 0.000 0.000 0.000 0.000 0.000 0.054 E 0.000 0.000- ,0.054 0.054 0.000 0.000 0.217 0.000 0.000 0.325 l ESE 0.000 . 0.000 0.000 0.108 0.163 0.325 0.108 0.000 0.000 0.704 SE 0.000 0.000 0.054 0.000 0.163 0.325 0.217 0.000 0.000 0.758 SSE 0.000 0.000 0.054 0.163 0.163 0.2 71 0.108 0.000 0.000 0.758 5 0.000 0.000 0.054. 0.054 0.108 0.325 0.163 0.000 0.000 0.704 SSWs 0.000 0.000 0.054 0.217 0.163 0.271 0.325 0.000 0.000 1.029 l ' SW 0.000 0.000 0.000 0.000 0.054 0.217 0.975 0.054 0.000 1.300 WSW 0.000 0.000 0.108 0.054 0.108 0.108 0.325 0.000 0.000 0.704 l
W 0.000 0.000 0.000 0.108 0.000 0.271 0.000 0.000 0.000 0.379 WNW 0.000 0.000 0.108 0.000 0.000 0.108 0.000 0.000 0.000 0.217 i i NW ~0.000 0,000 0.054 0.000 0.000 0.000 0.000 0.000 0.000 0.054 WNW 0.000' O.000 0.054 0.000 0.000 0.000 0.000 0.000 0.000 0.054 '
i l
-SUBTOTAL 0.000 0.000 0.758 0.867 0.9 75 2.384 3.521 0.271 0.000 8.776 i
i i TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2038
, TOTAL HOURS OF STABILITY CLASS F 1 73
! TOTAL HOURS OF VALID WIND DIRECTION WIND SPEED-STABILITY CLASS F 162 TOTAL HOURS OF VALID WIND DIRECTION WIND SPEED STABILITY OBSERVATIONS 1846 70TAL HOURS CALM 0 l
i l
METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA T BETWEEN 45.30 AND 89.59 METERS :
WIND SPEED AND DIRECTION MEASURED AT 92.63 NETER LEVEL DATE PRINTED: 19980720 MEAN WIND SPEED = 10.62 l
) I NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2112 L.
Fl i I
JOINT PERCEPTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS G (DELTA T > 4.0 C/100 M)
Browns Ferry Nuclear Plant APR 1, 1998 JUN 30, 1998 WIND WIND SPEED (MPN)
DIRECTION CALM 0.6 1.4 1.5 3.4 3.5 5.4 5.5 7.4 7.5 12.4 12.5 18.4 18.5 24.4 >=24.5 TOTAL l N 0.000 0.000 0.000 0.000 0.054 0.000 0.000 0.000 0.000 0.054 l NNE 0.000 0.000 0.000 0.000 0.054 0.000 0.217 0.108 0.000 0.379
)
NE 0.000 0.000 0.000 0.163 0.000 0.000 0.108 0.108 0.000 0.379 l ENE C.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 l E 0.000 0.000 0.000 0.108 0.000 0.000 0.000 0.000 0.000 0.108
-ESE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 )
SE , 0.000 0.000 0.000 0.054 0.000 0.000 0.000 0.000 0.000 0.054 {
SSE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 l I
S 0.000 0.000 '0.000 0.'000 0.163 0.000 0.000 0.000 0.000 0.163 S$W 0.000 0.000 0.000 0.000 0.108 0.000 0.000 0.000 0.000 0.108 SW 0.000 0.000 0.000 0.000 0.108 0.000 0.108 0.000 0.000 0.217 ;
l Wsw ' O.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W 0.000 0.000 0.000 0.054 0.000 0.000 0.000 0.000 0.000 0.054 WWW 0.000 0.000 0.000 0.000 0.054 0.000 0.000 0.000 0.000 0.054 .l NW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 j NNW 0.000 0.000 0.000~ 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ,
l SUBTOTAL 0.000 0.000 0.000 0.379 0.542 0.000 0.433 0.217 0.000 1.571 TOTAL HOURS OF VALID STAT!LITY OBSERVATIONS 2038 TOTAL HOURS OF STABILITY CLASS G 30 70TAL HOURS OF VALID WIND DIRECTION WIND SPEED STABILITY CLASS G 29 TOTAL HOURS OF VALID WIND DIRECTION WIND SPEED STABILITY OBSERVATIONS 1846 TOTAL HOURS CALM' 0 METEOR 0LOGILAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA T BETWEEN 45.30 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT 92.63 METER LEVEL DATE PRINTED: 19980720 MEAN WIND SPEED = 10.27 NOTE: TOTALS AND SUBTOTALS ARE OSTAINED FROM UNROUNDED NUMBERS E2-Il3
RadiologicalImpact Assessment:
- l. Br wns Ferry Nuclear Plant l
January - December 1998 Table 24 Joint Frequency Distribution in Percent for Elevated Releases Third Quarter l
i I
7 I e i 1 I
~!
r I
i E2-114 l
1 1
l
).
FE I ':
l~
JOINT PERCENTAE FREQUENCIES OF WIW SPEED BY WIND DIRECTION FOR STABILITY CLASS A (DELTA T = 1.9 C/100 N) 1 J
l Browns Ferry Nuclear Plant
.JUL 1. 1998 SEP 30, 1998
, WIG ' Wi e SPEED (NPH)
DIRECTION- CALN 0.6 1.4 1.5 3.4 3.5 5.4 5.5 7.4 7.5 12.4' 12.5 18.4 18.5 24.4 =24.5 TUTAL N 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000' O.000 ME 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000
- NE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ENE- 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.046 SE 0.000 ' O.000 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.046 SSE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ' O.000
.S' O.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SW - 0.000 ' O.000 .0.000 0.000- 0.000 0.000 0.000 0.000 0.000 0.000 WSW 0.000 0.000 0.000 0.000 0.000 -0.000 0.000 0.000 0.000 0.000 W 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 '0.000 0.000 l WW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000. 0.000 W 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NIAd 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SUOTOTAL 0.000 0.000 0.000 0.000 0.046 0.046 0.000 0.000 0.000 0.092 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2164 TOTAL HOURS OF STABILITY CLASS A 2 TOTAL HOURS OF VALID WI S DIRECTION WI S SPEED STABILITY CLASS A 2 TOTAL HOURS OF VALIO WIS DIRECTION WIS SPEED.STASILITY OBSERVATIONS 2164 TOTAL HOURS CAIJi 0 NETEOR0 LOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA T BETWEEN 45.30 A M 89.59 NETERS WIM SPEED AW DIRECTION EASURED AT 92.63 ETER LEVEL DATE PRINTED: 19981118 NEAN WI M SPEED = 8.65 i
i NOTE: TUTALS AS SUBTUTALS ARE OBTAIED FRON UWOUMED IRIGERS E2-115
p.
l I
' JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS B ( 1.9< DELTA T*= 1.7 C/100 M)
Browns Ferry Nuclear Plant JUL 1. 1998 SEP 30. 1998 e
WID WIND SPEED (MPH) !
DIRECTION CALM 0.6 1.4 1.5 3.4 3.5 5.4 5.5 7.4 7.5 12.4 12.5 18.4 18.5 24.4 =24.5 TOTAL N 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 i NNE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 i NE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.000 0.000 0.000 0.046 0.000 0.000 0.046 i ESE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 i SE 0.000 0.000 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.046 .
SSE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 5 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 .
1 WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 l
W 0.000 -0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 l WW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SUBTOTAL 0.000 0.000 0.000 0.000 0.000 0.046 0.046 0.000 0.000 0.092 l
TOTAL HOURS OF VALID STABILITY OBSERVATIONS ,
2164
- TOTAL HOURS OF STABILITY CLASS B 2
! TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED STABILITY CLASS B 2 TOTAL HOURS OF VALID WIND DIRECTION WIND SPEED STABILITY OBSERVATIONS 2164 TOTAL HOURS CALM 0 l METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant
! STJ0!LITY BASED ON DELTA T BETWEEN 45.30 AND 89.59 METERS WI D SPEED AND DIRECTION MEASURED AT 92.63 METER LEVEL DATE PRINTED: 19981118 MEAN WIND SPEED = 12.85 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUNDERS E2-116 1-
l l
JOINT PERCENTAdE FREQUENCIES OF WIND SPEED 8Y WIND DIRECTION FOR STABILITY CLASS C (.1.74 DELTA T== 1.5 C/100 M)
Browns Ferry Nuclear Plant JUL 1, 1998 SEP 30, 1998 WIND WIND SPEED (MPH)
DIRECTION CALM 0.6 1.4 1.5 3.4 ' 3.5 5.4 5.5 7.4 7.5-12.4 12.5 18.4 18.5 24.4 ==24.5 TOTAL N 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NNE 0.000 0.000 0.000 0.000 0.000 0.000 0.046 0.000 0.000 0.046 NE 0.000 0.000 0.000 0.000 0.000 0.046 0.046 0.000 0.000 0.092 ENE 0.000 0.000 0.000 0.046 0.000 0.000 0.046 0.000 0.000 0.092 E 0.000 0.000 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.046 ESE 0.000 0.000 0.000 0.046 0.139 0.139 0.000 0.000 0.000 0.323 SE 0.000 0.000 0.000 0.231 0.139 0.000 0.092 0.000 0.000 0.462 SSE 0.000 0.000 0.000 0.092 0.092 0.046 0.046 0.000 0.000 0.277 5 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000
'SW. 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 MW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SUBTOTAL 0.000 0.000 0.000 0.416 0.370 0.277 0.277 0.000 0.000 1.340 J
l i
i TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2164 TOTAL HOURS OF STABILITY CLASS C 29 TOTAL HOURS OF VALID WI W DIRECTION WI S SPEED STABILITY CLASS C 29 ;
TOTAL HOURS OF VALID WI M DIRECTION WI S SPEED. STABILITY OBSERVATIONS 2164 TOTAL HOURS CALM 0 1
METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant l STABILITY BASED ON DELTA T KTWEEN 45.30 AND 89.59 METERS l WIND SPEED AND DIRECTION MEASURED AT 92.63 METER LEVEL' l
DATE PRINTED: 19981118 f MEAN WIND SPEED = 8.06 1
l l
NOTE: TOTALS AND SU8 TOTALS ARE OSTAIED FROM tammerD NUMBERS I
E2-117
g
. JOINT PERCENAE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR =
l l STASILITY CLASS D (.1.5< DELTA T=.0.5 C/100 M) l l Browns Ferry Nuclear Plant l
JUL 1. 1998 SEP 30. 1998 WIU WIND SPEED (NPH)
DIRECTION CALM 0.6 1.4 1.5 3.4 3.5 5.4 5.5 7.4 7.5 12.4 12.5 18.4 18.5 24.4 ==24.5 TOTAL N 0.000 0.000 0.277 0.601 0.832 1.987 0.970 0.000 0.000 4.667 NNE : 0.000 0.000 0.231 0.370 0.370 1.617 0.139 0.000 0.000 2.726 NE 0.000 0.000 0.231 0.277 0.555 0.693 0.139 0.000 0.000 1.895 ENE 0.000 0.000 0.231. 0.139 0.323 0.508 0.092 0.000 0.000 1.294 E 0.000 0.000 0.231 0.416 0.139 0.370 0.000 0.000 0.000 1.155 ESE 0.000 0.000 0.046 0.508 0.739 0.924 0.647 0.000 0.000 2.865 SE 0.000 0.000 0.832 1.386 0.739 0.878 1.433 0.277 0.000 5.545 i
SSE 0.000 0.000 0.970 0.970 0.786 1.017 1.017 0.000 0.000 4.760 S 0.000 0.000 0.832 1.109 1.017 0.878 0.231 0.000 0.000 4.067 SSW 0.000 0.046 0.786 1.201 0.693 0.508 0.092 0.000 0.000 3.327
- SW 0.000 0.000 0.647 1.617 0.647 0.739 0.277 0.000 0.000 3.928 i WSW 0.000 0.000 0.693 1.340 1.063 0.555 0.092 0.000 0.000 3.743 W 0.000 0.046 0.231 1.201 1.017 1.479 0.139 0.000 0.000 4.113 I WNW 0.000 0.000 0.323 0.555 1.294 1.340 0.231 0.046 0.000 3.789 0 0.000 0.000 0.139 0.508 0.970 0.924 0.508 0.000 0.000 3.050 Nied 0.000 0.046 0.555 0.739 0.508 0.693 0.277 0.046 0.046 2.911
, SU8 TOTAL 0.000 0.139 7.255 12.939 11.691 15.111 6.285 0.370 0.046 53.835 l
l TOTAL HOURS OF VALID STA81LITY OBSERVATIONS ,
2164 TOTAL HOURS OF STABILITY CLASS D 1165 TOTAL HOURS OF VALID WIND DIRECTION WIND SPEED STABILITY CLASS D 1165 TOTAL HOURS OF VALID WIND DIRECTION WIND SPEED STABILITY OBSERVATIONS 2164 TOTAL HOURS CALM 0 l
l METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant ST:CILITY BASED ON DELTA T BETWEEN 45.30 AND 89.59 METERS WID SPEED AND DIRECTION MEASURED AT 92.63 METER LIVEL l DATE PRINTED: 19981118 MEAN WIND SPEED = 7.39 NOTE: TOTALS AND SU8 TOTALS ARE 08TAINED FROM UNROUNDED NUNBERS E2-118 i
p i
l-i- i l
l 1
JOINT PERCENTAE FREQUENCIES OF WING SPEED BY WIND OIRECTION FOR STABILITY CLASS E ( 0.54 OELTA T = 1.5 C/100 M)
Browns Ferry Nuclear Plant JUL 1, 1998 SEP 30. 1998 l
WIW WI W SPEED (MPH)
DIRECTION CALM 0.6 1.4 1.5 3.4 3.5 5.4 5.5 7.4 7.5 12.4 12.5 18.4 18.5 24.4 =24.5 TOTAL
- - 1 1
N 0.006 0.092 0.277 0.231 0.555 1.201 0.786 0.000 0.000 3.149 NNE 0.004 0.000 0.231 0.277 0.323 1.340 0.832 0.092 0.000 3.100 NE 0.001 0.000 0.046 0.139 0.323 0.970 1.340 0.000 0.000 2.820 ENE 0.004 0.046 0.185 0.185 0.323 0.462 0.370 0.092 0.000 1.668 E O.002 0.092 0.046 0.231 0.277 0.647 0.277 0.000 0.000 1.574 ESE 0.009 0.046 0.462 0.185 0.462 0.832 0.786 0.046 0.000 2.828 SE 0.013 0.046 0.693 0.786 0.508 2.079 1.479 0.046 0.000- 5.650 SSE 0.011 0.046 0.601 0.370 0.693 0.647 0.462 0.000 0.000 2.830 5 0.004 0.092 0.139 0.323 0.231 0.277 0.139 0.046 0.000 1.252 SSW 0.006 0.092 0.370 0.185 0.370 0.323 0.046 0.000 0.000 1.394 I SW 0.006 0.046 0.323 0.277 0.000 0.277 0.139 0.000 0.000 1.069 WSW 0.003 0.000 0.186 0.323 0.139 0.277 0.231 0.000 0.000 1.158 W 0.006 0.000 0.370 0.277 0.231 0.416 0.231 0.000 0.000 1.531 W18d 0.006 0.092 0.277 0.370 0.092 0.185 0.000 0.000 0.000 1.023 l
'80i 0.006 0.000 0.323 0.323 0.185 0.139 0.000 0.000 0.000 0.976 l
- NNW 0.002 0.000 0.139 0.139 0.323 0.092 0.046 0.000 0.000 0.742 SU8 TOTAL- 0.092 0.693 4.667 4.621 5.037 10.166 7.163 0.323 0.000 32.763 TAL HOURS OF VALID STABILITY OBSERVATIONS 2164
% HOURS OF STABILITY CLASS E 709 10URS OF VALID WIND DIRECTION.WIM SPEED STABILITY CLASS E 709
- a)URS OF VALID WIW DIRECTION WIS SPEED. STABILITY OBSERVATIONS 2164
. oral HOURS CALM 2 METEOROLOGICAL FACILITY: Browns Ferrf Nuclear Plant STA81LITY BASED ON DELTA T KTWEEN 45.30 AND 89.59 METERS WIW SPEED AND DIRECTION MEASURED AT 92.63 METER LEVEL DATE PRINTED: 19981118 MEAN WI N SPEED = 8.43 NOTE: TOTALS A W SU8TUTALS ARE OSTAINED FRON UNROUWED NUMBERS E2-119
fM JOINT PERCENTAdE FREQUENCIES OF WIND SPEEC BY WINO DIRECTION FOR l
STABILITY CLASS F ( 1.5= DELTA T*= 4.0 C/100 M) '
Browns Ferry Nuclear Plant JUL 1. 1998 SEP 30. 1998 WIND WIND SPEED (MPH)
O!RECTION- CALM 0.6 1.4 1.5 3.4 3.5 5.4 5.5 7.4 7.5 12.4 12.5 18.4 18.5 24.4 =24.5 TOTAL N 0.000 0.000 0.000 0.046 0.185 0.277 0.370 0.000 0.000 0.878 NNE 0.004 0.046 0.000 0.139 0.000 0.416 0.555 0.416 0.000 1.575 NE 0.004 0.046 0.000 0.000 0.046 0.647 0.739 0.370 0.000 1.853 ENE 0.004 0.000 0.046 0.046 0.046 0.231 0.185 0.092 0.000 0.651 E 0.013 0.046 0.092 0.231 0.139 0.555 0.139 0.000 0.000 1.214 ESE 0.006 0.000 0.092 0.092 0.046 0.323 0.185 0.000 0.000 0.748 SE 0.004 0.000 0.046 0.046 0.046 0.185 0.231 0.000 0.000 0.559 SSE 0.013 0.046 0.092 0.000 0.000 0.323 0.000 0.000 0.000
- 0.475 S' O 006 0.C46 0.046 0.092 0.092 0.000 0.000 0.000 0.000 0.286 SSW 0.006 0.000 0.092 0.000 0.000 0.000 0.000 0.000 0.000 0.101 SW 0.006 0.300 0.092 0.139 0.046 0.046 0.000 0.000 0.000 0.332 WSW 0.000 0.000 0.000 0.185 0.000 0.000 0.046 0.000 0.000. 0.231 W 0.004 0.000 0.046 0.000 0.046 0.000 0.000 0.000 0.000 0.097 WW 0.004 0.000 0.046 0.092 0.046 0.046 f,.000 0.000 0.000 0.235 18i 0.004 0.000 0.046 0.046 0.000 0.000 0.000 0.000 0.000 0.097
'INel 0.004 0.000 0.046 0.000 0.092 0.092 0.000 0.000 0.000 0.235 SUBTOTAL 0.092 0.231 0.786 1.155 0.832 3.142 2.449 0.878 0.000 9.566 TOTAL HOURS OF VALID STABILITY OBSF.RVATIONS 2164 TOTAL HOURS (T STABILITY CLASS F 207 TOTAL HOURS OF VALID WIN DIRECTION WIND SPEED.5TABILITY CLASS F 207 TOTAL HOURS OF VALID WIW DIRECTION WIS SPEED. STABILITY 00SERVATIONS 2164 TOTAL HOURS CALM 2 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA.T BETWEEN 45.30 A m 89.59 METERS WIND SPEED AND DIRECTION lEASURED AT 92.13 METER LEVEL DATE PRIlffED: 19981118 MEAN WI m SPEED = 10.41 NOTE: TOTALS AND SUBTUTALS ARE 08TAINED FROM UNROUNDED NUN 8ERS E2-120
r l
l JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS G (DELTA T
- 4.0 C/100 M)
Browns Ferry Nuclear Plant JUL 1. 1998 SEP 30. 1998 WINO WIND SPEED (MPH)
DIRECTION CALM 0.6 1.4 1.5 3.4 3.5 5.4 5.5 7.4 7.5 12.4 12.5 18.4 18.5 24.4 ==24.5 TOTAL j
- l N 0.000 - 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.046 NME 0.000 0.000 0.046 0.000 0.000 0.000 0a39 0.046 0.000 0.231 NE 0.000 0.000 0.000 0.000 0.046 0.277 0.370 0.092 0.000 0.786 ENE 0.000 0.000 0.000 0.000 0.000 0.185 0.277 0.092 0.000 0.555 E 0.000 0.000 0.000 0.000 0.046 0.092 0.046 0.046 0.000 0.231 ESE 0.000 0.000 0.046- 0.000 0.000 0.092 0.000 0.000 0.000 0.139 SE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SSE 0.000 0.000 0.092 0.000 0.000 0.000 0.000 0.000 0.000 0.092 5 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 U 00 W 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 C) 0.000 0.000 0.000 0.092 0.046 0.000 0.000 0.000 0.000 0.139 NNW 0.000 0.046 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.092 SU8 TOTAL 0.000 0.046 0.231 0.139 0.139 0.647 0.832 0.277 0.000 2.311 TOTAL HOURS OF VALID STABILITY OBSERVATIONS , 2164 TOTAL HOURS OF STABILITY CLASS G 50 TOTAL HJURS OF VALID WIND DIRECTION WIND SPEED STABILITY CLASS G 50 TOTAL HOURS OF VALID WIND DIRECTION WIND SPEED STABILITY OBSERVATIONS 2164 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant
- STABILITY UASED ON DELTA T BE1 WEEN 45.30 AND 89.59 ME1ERS WIND SPEED MD DIRECTION EASURED AT 92.63 METER LEVEL l
DATE PRINTED: 19981118 MEAN WIND SPEED = 11.76 NOTE: TOTALS AND SUBTUTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-121 l
RadklogicalImpact Assessment '
Br:wns Firry Nuclear Plant January - December 1998 l Table 25 Joint Frequency Distribution in Percent l for Elevated Releases Fourth Quarter l
4 1
I l
l l
l I
E2-122
1 1
I l
l
)
JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND OIRECTION FOR STABILITY' CLASS A (DELTA Tcs-1.9 C/100 M) l Browns Ferry Nuclear Plant
!! OCT 1, 1998 - DEC 31, 1998
.; )
.: r WIND WIND SPEED (MPN) l ;DIREC710N- ~0.6 1.4 -1.5 3.4 :3.5 5.4 7.5 12.4 12.5-18.4 18.5 24.4 CALM ~ 5.5 T.4 >=24.5 TOTAL-
! j N "0.000 0.000 0.000~ 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NNE- 0.000 0.000 0.000 0.000 0.000 .0.000- 0.000 0.000 0.000 0.000
- NE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE' O.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SE 0.000 ' O.000 0.000 0.000 0.000 0.000 0.000. 0.000 0.000 0.000 SSE 0.000 0.000 0.000 0.000- 0.000 0.000 0.000 0.000 0.000 0.000
$: 0.000 ' O.000 0.000 0.000' O.000 0.000 0.000 0.000 0.000 0.000
$$W 0.000 0.000 0.000 0.000 0.000' O.000 0.000 0.000 0.000 0.000
.SW 0.000- 0.000 . 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000
- - . WSW 0.000< 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W~ 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ' O.000 WNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 MW ' O.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NNW 0.000' O.000 0.000 0.000 0.000 0.000 0.000. 0.000 0.U00 0.000 SLOVOTAL' .0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 i
TOTAL NOURS OF VALID STASILITY OBSERVATIONS 2185'
' TOTAL NOUR$ OF STASILITY CLASS A 0 TOTAL NOURS OF VALIO WIND DIRECTION-WIND SPEED STA8!LITY CLASS A 0 ;
TOTAL NOUR$ OF VALID WIND DIRECTION WIND SPEED STASILITY OBSERVAT10NS 1988
- TOTAL NOUR$ CALM. O I -ME7EOROLOGICAL FACILITY: 'trowns Ferry Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 45.30 AND 89.59 METERS
. WIND SPEED AND DIRECTION MEASURED AT 92.63 METER LEVEL-DATE PRINTED: 19990209 MEAN WINO SPEED = 0.00
' NOTE: -TOTALS AND SUBTOTALS ARE OSTAINED FROM UNROUNDED NUMBERS E2123
l l
l JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS B ( 1.9< DELTA T<= 1.7 C/100 M)
Browns Ferry Nuclear Plant ,
1 OCT '1, 1998 DEC 31, 1998 WINO . WIND SPEED (MPH)
DIRECTION CALM 0.6 1.4 1.5 3.4 3.5-5.4 5.5 7.4 7.5 12.4 12.5 18.4 18.5 24.4 >=24.5 TOTAL N 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NNE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NE- 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ;
ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 l E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 l ESE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000
. SE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 l SSE 0.000 0.000 0.000 0.000 0.050 0.000 0.000 0.000 0.000 0.050 S 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 S$W 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WSW 0.000 0.000 0.000 0.050 0.000 0.000 0.000 0.000 0,000 0.050 W 0.000 0.000 0.000 0.000 0.000 0.050 0.000 0.000 0.000 0.050 WNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 l NNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SUBTOTAL 0.000 0.000 0.000 0.050 0.050 0.050 0.000 0.000 0.000 0.151 TOTAL HOURS OF VALID STABILITY OBSERVATIObs 2185 TOTAL HOURS OF STABILITY CLASS B 3 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS B 3 l
TOTAL HOURS OF VALID WIND DIRECTION WIND SPEED STABILITY OBSERVATIONS 1988 -
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METEOROI.0GICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA T SETWEEN 45.30 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT 92.63 METER LEVEL DATE PRINTED: 19990209 MEAN WIND SPEED = 7.03 i l
NOTE: TOTALS AND SUBT0fALS ARE OBTAINED FROM UNROUNDED NUMBERS i E2-124
N JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECT 10W FOR STABILITY CLASS C ( 1.7< DELTA T<= 1.5 C/100 M) 8rcuns Ferry Nuclear Plant ,
1 OCT 1, 1998 - DEC 31, 1998 WIND WIND SPEED (MPH) l DIRECTION CALM 0.6-1.4 1.5 3.4 3.5 5.4 5.5 7.4 7.5 12.4 12.5 18.4 18.5-24.4 >=24.5 TOTAL N 0.000 0.000 0.000 0.000 0.000 0.000 0.151 0.000 0.000 0.151 NNE 0.000 0.000 0.000 0.000 0.000 0.000 0.151 0.050 0.000 0.201 l NE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 !
E.. 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SSE 0.000 0.000 0.000 0.000 0.000 0.000 0.050 0.000 ,0.000 0.050 j S 0.000 0.000 0.000 0.000 0.000 0.000 0.000. 0.000 0.000 0.000 !
SSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SW 0.000 0.000 0.000 0.050 0.000 0.050 0.000 0.000 0.000 0.101 WSW 0.000 0.000 0.000 0.050 0.050 0.000 0.000 0.000 0.000 0.101 W 0.000 0.000 0.000 0.000 0.050 0.000 0.000 0.000 0.000 0.050 WNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 :
NW 0.000 0.000 0.000 0.000 0.000 0.050 0.000 0.000 0.000 0.050 j I
NNW 0.000 .0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SUBTOTAL 0.000 0.000 0.000 0.101 0.101 0.101 0.352 0.050 0.000 0.704 I
TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2185 TOTAL HOURS OF STABILITY CLASS C 14 TOTAL HOURS OF VALID WIND DIRECTION WIND SPEED STABILITY CLASS C 14 l TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED STABILITY OBSERVATIONS 1988 .
l TOTAL HOURS CALM 0 l
METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant l STABILITY BASED ON DELTA T BETWEEN 45.30 AND 89.59 METERS WINO SPEED AND DIRECTION MEASURED AT 92.63 METER LEVEL DATE PRINTED: 19990209 MEAN WIND SPEED = 12.09 NOTE: TOTALS AND SUOT0TALS ARE OBTAINED FROM UNROUNDED NUMBERS l
E2125
n JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WINO DIRECTION FOR STABILITY CLASS D ( 1.5< DELTA Tc= 0.5 C/100 M)
Browns Ferry Nuclear Plant OCT 1, 1998 - DEC 31, 1998 WINO. WIND SPEED (MPM)
DIRECTION CALM 0.6 1.4 1.5 3.4 3.5 5.4 5.5 7.4 7.5 12.4 12.5 18.4 18.5 24.4 >=24.5 TOTAL N 0.000 0.000 0.050 0.201 0.252 2.716 1.%2 0.302 0.050 5.533 NME 0.000 0.000 0.101 0.151 0.201 2.163 2.565 0.352 0.000 5.533 NE 0.000 0.000 0.151 0.402 0.503 1.710 .1.107 0.000 0.000 3.873 ENE. 0.000 0.050 0.101 0.151 0.402 0.553 0.050 0.000 0.000 1.308 E 0.000 0.050 0.050 0.302 0.050 0.151 0.201 0.050 0.000 0.855 l ESE 0.000 0.000 0.201 0.352 0.352 0.453 0.352 0.000 0.000 1.710 SE 0.000 0.000 0.704 0.302 0.402 1.056 0.553 0.654 0.151 3.823 SSE 0.000 0.000 0.453 0.453 0.453 0.704 2.264 2.314 0.302 6.942 S 0.000 0.000 0.252 0.201 0.101 0.755 1.459 0.956 0.503 4.225 SSW 0.000 0.000 0.352 0.553 0.101 0.402 1.811 1.006 0.000 4.225 SW 0.000 0.050 0.151 0.302 0.050 0.151 0.654 0.151 0.000 1.509 WSW 0.000 0.000 0.252 0.302 0.050 0.101 0.252 0.050 0.000 1.006 V 0.000 0.000 0.402 0.201 0.050 0.503 0.101 0.101 0.000 1.358 WWW 0.000 0.000 0.101 0.352 0.503 0.604 0.553 0.101 0.000 2.213 )
NW 0.000 0.000 0.201 0.352 0.151 1.559 0.805 0.402 0.101 3.571 NWW . 0.000 0.050 0.050 0.302 0.302 1.710 1.157 0.201 0.050 3.823 l l
SUBTOTAL 0.000 0.201 3.571 4.879 3.924 15.292 15.845 6.640 1.157 51.509 'I
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TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2185 TOTAL HOURS OF STABILITY CLASS D 1188 TOTAL HOURS OF VALID WIND DIRECTION WIND SPEED STABILITY CLASS D 1024 TOTAL HOURS OF VALID WINO DIRECTION-WIND SPEED STABILITY OBSERVATIONS 1988 .
TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant
. STABILITY BASED ON DELTA T BETWEEN 45.30 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT 92.63 METER LEVEL DATE PRINTED: 19990209 MEAN WIND SPEED = 11.92 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-126 i
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l J0!NT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS E ( 0.5< DELTA Tc= 1.5 C/100 M)
Browns Ferry Nuclear Plant OCT 1, 1998 DEC 31, 1998 i
l WIND WIND SPEED (MPH)
DIRECTION CALM 0.6 1.4 1.5 3.4 3.5 5.4 5.5 7.4 7.5 12.4 12.5 18.4 18.5 24.4 >=24.5 TOTAL N 0.004 0.050 0.101 0.151 0.201 0.704 1.157 0.201 0.000 2.569 NME 0.003 0.050 0.050 0.101 0.352 0.453 1.056 0.453 0.000 2.518 NE 0.003 0.050 0.050 0.000 0.000 0.654 1.006 0.151 0.000 1.914 ENE 0.003 0.050 0.050 0.201 0.352 0.654 0.553 0.050 0.000 1.914 E. 0.003 0.000 0.101 0.201 0.101 0.352 0.201 0.000 0.000 0.958 ESE 0.006 0.050 0.201 0.101 0.352 0.604 0.000 0.050 0.000 1.365 SE 0.004 0.000 0.151 0.553 0.453 1.056 1.056 0.101 0.000 3.374 i $$E 0.004 0.000 0.151 0.252 0.402 1.610 1.861 0.855 0.000 5.135 l S 0.003 0.050 0.050 0.151 0.553 0.704 1.358 h352 0.000 3.222 SSW 0.003 0.000 0.101 0.151 0.252 0.453 1.157 0.050 0.000 2.166 SW 0.001 - 0.050 0.000 0.252 0.050 0.050 0.302 0.050 0.000 0.756 Wsw 0.003 0.000 0.101 0.151 0.050 0.050 0.201 0.000 0.000 0.556 W 0.001 0.050 0.000 0.101 0.000 0.302 0.000 0.000 0.000 0.454 WWW 0.006 0.050 0.201 0.151 0.201 0.050 0.000 0.000 0.000 0.660 NW 0.003 0.050 0.050 0.101 0.302 0.604 0.101 0.000 0.000 1.210 NNW 0.003 0.000 0.101 0.101 0.201 0.252 0.503 0.050 0.000 1.210 l SU8 TOTAL 0.050 0.503 1.459 2.716 3.823 8.551 10.513 2.364 0.000 29.980 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2185 TOTAL HOURS 0F STASILITY CLASS E 629 TOTAL HOURS OF VALID WIND DIRECTION WIND SPEED STABILITY CLASS E 5%
TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED STABILITY OBSERVATIONS 1988 -
TOTAL HOURS CALM i METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA T BETWEEN 45.30 AND 89.59 METERS l
j WIND SPEED AND DIRECTION MEASURED AT 92.63 METER LEVEL DATE PRINTED: 19990209 MEAN WIND SPEED = 11.01 NOTE: TOTALS AND SU5 TOTALS ARE OBTAINED FROM UNROUNDED NUNBERS I
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( JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIM DIRECTION FOR l
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-STABILITY CLASS F ( 1.5< DELTA T<= 4.0 C/100 M) l Brooms Ferry Nuclear Plant OCT 1, 1998 - DEC 31, 1998 L
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. WIN WIND SPEED (WH)
- DIRECTION. . CALM :0.6-1.4 1.5 3.4 3.5 5.4 5.5 7.4 7.5 12.4 12.5 18.4 18.5 24.4 >=24.5 TOTAL l l f~ N 0.004 0.000 0.101 0.000 0.000- 'O.252 0.101 0.050 0.000 0.507 l NE 0.002 0.000 0.050 0.000 0.000 0.201 0.604 0.604 0.000 1.461 NE 0.004 0.000 0.101 0.050 0.000 0.000 0.654 0.553 0.000 1.362 ENE 0.004- 0.101 0.000 0.000- 0.000 0.201 0.553 0.000 0.000 0.859 1
'E 0.004 0.000 0.101 0.050 0.000 0.252 0.050 0.000 0.000 0.457 l ESE: 0.002- 0.000 0.050 0.050 0.101 0.151 0.151 0.000 0.000 0.505 ;
SE 0.008 0.000 0.201 0.151 0.553 0.604 0.453 0.000 0.000 1.970 l SSE 0.000 -0.000 0.000 0.050 0.050 0.352 0.201 0.000 0.000 0.654 5 0.002 0.050. 0.000 'O.050 0.000 0.101 0.050 0.000 0.000 0.253 SSW 0.004 0.050 0.050 0.050 0.000 0.352 0.604 'O.000 -0.000 1.111 SW ' O.000 - 0.000 0.000 0.000 0.000 0.050 0.050 0.000 0.000 0.101 WSW - 0.004L 0.050 0.050 0.151 0.101 0.101 0.000 0.000 0.000 0.457
! W 0.000 0.000 -0.000 0.050 0.201 0.050 0.000 0.000 0.000 0.302 WNW 0.002 c 0.000 0.050 0.101 0.000 0.000 0.000 0.000- 0.000 0.153 l NW 0.002 0.000 0.050 0.000 0.101 0.151 0.000 0.000- 0.000 0.304 1 iMW 0.010 0.000 0.252 0.050- 0.050 0.000 0.000 0.000 0.000 0.362 SUsTOTAL 0.050 - 0.252 1.056 0.805 1.157 2.817 3.471 1.207 0.000 10.815 l I TOTAL'NOUR$ OF VALID STABILITY OBSERVATIONS 2185 TOTAL NOURS OF STABILITY CLASS F 215 TOTAL NOURS OF VALID WIND DIRECTION-WIM SPEED STABILITY CLASS F 215 f(
TOTAL NOURS OF VALID W! m DIRECTION Wi m SPEED STASILITY OBSERVATIONS 1988 -
TOTAL NOURS CALM i i
r METEOROLOGICAL FACILITY:. Brotes Ferry Nuclear Plant STABILITY BASED ON DELTA T BETWEEN 45.30 Am 89.59 METERS
. WIND SPEED Am DIRECTION MEASURED AT 92.63 METER LEVEL DATE PRINTED: 19990209 MEAN WI W SPEED = 11.00 NOTE:' TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2128
JOINT PERCENTAGE FREQUENCIES M V!:*.* SPEED BY WIND DIRECTION FOR STABILITY CLASS G (DELTA T > 4.0 C/100 M)
Browns Ferry Nuclear Plant DCT .1, 1998 - DEC 31, 1998 WIND WINO SPEED (MPH)
DIRECTION CALM 0.6 1.4 1.5-3.4 3.5 5.4 5.5 7.4 7.5 12.4 12.5 18.4 18.5 24.4 >=24.5 TOTAL N 0.000 0.000 0.050 0.000 0.000 0.000 0.101 0.000 0.000 0.151 NNE 0.000 0.000 0.000 0.000 0.000 0.050 0.151 0.201 0.000 0.402 NE 0.000 0.000 0.000 0.000 0.000 0.000 0.553 0.101 0.000 0.654 ENE 0.000 0.000 0.050 0.000 0.050 0.151 0.755 0.000 0.000 1.006 E 0.000 0.000 0.050 0.101 0.151 0.201 0.050 0.000 0.000 0.553 ESE 0.000 0.050 0.000 0.151 0.101 0.302 0.000 0.000 0.000 0.604 SE 0.000 0.000 0.101 0.151 0.050 0.151 0.000 0.000 0.000 0.453 SSE 0.000 0.000 0.000 0.151 0.101 0.050 0.151 0.000 0.000 0.453 s 0.000 0.050 0.101 0.000 0.000 0.302 0.050 0.000 0.000 0.503 SSW 0.000 0.000 0.101 0.201 0.050 0.151 0.101 0.000 0.000 0.604 SW 0.000 0.101 0.252 0.151 0.000 0.050 0.050 0.000 0.000 0.604 WSW 0.000 0.000 0.151 0.101 0.000 0.101 0.000 0.000 0.000 0.352 W 0.000 0.050 0.050 0.050 0.000 0.050 0.000 0.000 0.000 0.201 WWW 0.000 0.000 0.050 0.050 0.050 0.050 0.000 0.000 0.000 0.201 NW 0.000 0.000 0.050 0.000 0.000 0.050 0.000 0.000 0.000 0.101 NNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SUST0TAL 0.000 0.252 1.006 1.107 0.553 1.660 1.962 0.302 0.000 6.841
. TOTAL HOURS OF VALIO STABILITY OBSERVATIONS.. 2185 TOTAL HOURS OF STA81LITY CLASS G 136 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED STASILITY CLASS G 136 TOTAL HOURS OF VALID WIND DIRECT!0N WIND SPEED-STABILITY OSSERVATIONS 1988 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant
! 'STARILITY BASED ON DELTA T BCTWEEN 45.30 AND 89.59 METERS WIND SPEED AND DIRECT 10W MEASURED AT 92.63 METER LEVEL DATE PRINTED: 19990209 MEAN WIND SPEED = 9.40 t
NOTE: TOTALS AND Suet 0TALS ARE OBTA!hED FROM UNROUNDED NUMBERS l
E2-129 i
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ENCLOSURE 3 l
TENNESSEE VALLEY AUTHORITY l BROWNS FERRY NUCLEAR PLANT (BFN) l UNITS 1, 2, AND 3 EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT 1998 l
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EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT YEAR 1998 - i
- I. ' Regulatory and BFN ODCM Limits A. . Fission and Activation Gases in Gaseous Efiluent: 1 The release of fis'sion and activation gases is regulated by the dose limits of 10 CFR 50 Appendix 1 and BFN Offsite Dose Calculation Manual (ODCM). 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 l calendar quarter to s 5 millirad (mrad) for gamma radiation and s 10 mrad for beta radiation; and I during any calendar year to s 10 mrad for gamma radiation and 5 20 mrad for beta radiation. l i
B. Iodines and Particulates with Half-Lives Greater than Eight Days in Gaseous Effluents.
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' The release ofiodines and particulates in gaseous effluent is regulated by the dose limits of 10 CFR 50_ Appendix I and the BFN ODCM. 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 5 7.5 millirem (mrem), and during any ;
calendar year to s 15 mrem.
C. Liquid Effluents The release of radioactive liquid effluents is regulated by the dose limits of 10 CFR 50 Appendix I and the BFN ODCM. 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 s 1.5 mrem to the total body and 55 mrem to any organ and during any calendar year to 5 3 mrem to the total body and s 10 mrem to any organ.
II. Limitation on Dose Rate A. Fission and Activation Gases in Gaseous Efiluent:
.1. The instantaneous release rate of fission and activation gases is based on the dose rate limits of 10 CFR 20.1301 and the BFN ODCM. 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 5 500 mrem per year to the total body and 5 3000 mrem per year to the skin.
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i EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT YEAR 1998 II. . Limitations on Dose Rate (Continued)
B. . Iodines and Particulates with Half-Lives Greater than Eight Days in gaseous emuents.
- 1. The instantaneous release rate of particulates and iodines is regulated by the dose rate limits l _ of the BFN ODCM. The dose rate at any time to areas at and beyond the site boundary, due to I-131, I-133, H-3 and particulates with greater than eight days half-lives released in gaseous emuents from the site, shall be limited to < 1500 mrem per year to any organ.
C. Liquid Emuents
- 1. The concentration of radionuclides in liquid effluents released at any time from the site to unrestricted areas shall be limited to the concentrations specified in 10 CFR 20.1001 -
20.2402, Appendix B, Table 2, 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 Ci per
. milliliter (ml) total activity III. Measurements and Aoproximations of Total Radioactivity l
A. Fission and Activation Gases:
- 1. Noble gases in the building vent and stack (elevated) gaseous effluents 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
. vent flow is calculated for each release. Gas grab samples ofinput streams to_the stack are taken and analyzed weekly. Gas grab samples ofin-service vents are taken and analyzed monthly. The specific noble' gas activity concentrations and total volume of the gases are used to calculate the total curies and noble gases released.
- 2. The tritium concentration is determined by the analysis of a monthly grab sample for each release point.
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7 EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT YEAR 1998
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- III. Measurements and Anproximations ofTotal Radioactivity (continued)
B. lodines and Particulates
- 1. 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 % 7te data are used weekly to verify that relvase rate limits were I not exceeded. The specL 7tivity concentrations and total volume of gaseous effluent are used on a monthly basis av determine the total curies of each particulate and iodine released during the month.
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- 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.
C. Liquid Efiluents ,
- 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 monthc I
. 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.
D. The Radioactive Gaseous and Liquid Waste Monitoring Sampling and Analysis Program is specified in ODCM Sections 1/2.2.1 and 1/2.2.2.
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EFFLUENT AND WASTE DISPOSAI. ANNUAL REPORT SUPPLEMENTAL INFORMATION 1998
!. IV.' Batch
! Cuarter Gmt.n Bann ouarter A, Liquid lloiti 1 2- 1 4
- 1. Number of batches released Each- 0 0 0 0
- 2. Total time for batch released Minutes 0 0 0 0
- 3. Maximum time period for a batch release ' Minutes 0 0 0 0 4.' Average time period for. a batch release Minutes 0 0- 0 0
- 5. Minimum time period for a batch release Minutes 0 0 0 0
- 6. Average stream flow during period of releaseinto a flovdng stream Cubic feet per second 0 0 0 0 B. Gaseous None C. _ Abnormal / Unplanned Releases U)
Type Number of Total Activity Releases Releases (Curies)
Liquid 1 1.39E-05 Gaseous None None
(" An explanation of any liquid or gaseous abnormal / unexplained release shall be documented in the summary. One liquid release is described.
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EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT LIQUID EFFLUENTS - SUMMATION OF ALL RELEASES YEAR 1998 ILnits Ouarter Quarter Ouarter Ouarter % Error A. Fission and Activation Products . p* p* p+ p**
(Does not include tritium, gases, Alpha) -
- 1. Total Release Curies 0.00E+00 0.00E+00 0.00E+00 1.11E-05 9
- 2. Average Diluted Concentration Released During Period Ci/ml 0.00E+00 0.00E+00 0.00E+00 1.67E-08 L
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- 3. Percent of Applicable Limit % * * *
- B. Tritium
- 1. Total Releases Curies 0.00E+00 0.00E+00 0.00E+00 2.75E-06 6 ,
- 2. Average Diluted Concentration Released During Period pCi/ml 0.00E+00 0.00E+00 0.00E+00 4.13E-09
- 3. Percent of Applicable Limit % * * *
- C. Dissolved and Entrained Noble Gases
! 1. Total Releases Curies 0.00E+00 0.00E+00. 0.00E+00 1.76E-08 8
- 2. Average Diluted Concentration Released During Period pCi/ml 0.00E+00 0.00E+00 0.00E+00 2.64E-11
, 3. - Percent of Applicable Limit - % * * *
- D. Gross Alpha Radioactivity
- 1. Total Releases Curies ND ND ND ND 48
- 2. Average Diluted Concentration Released During Period pCi/ml ND ND ND ND E. Volume of Liquid Waste to Discharge Canal (Prior to dilution) Liters 0.00E400 0.00E+00 0.00E+00 1.63E+05 . 3 F. Volume of Dilution Water for Period Liters 0.00E+00 0.00E+00 0.00E+00 3.86E+10 10 G. Total CCW . gigagallons 0.00E+00 0.00E+00 0.00E+00 1.89E+02
- The applicable limit is expressed in terms of dose. See Enclosure 1, Tables 5 through 8.
- No liquid releases were made in the 1",2"d, or 3'd quarters.
- One abnormal release was made in the 4* quarter.
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! EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT j LIQUID RELEASES FOR YEAR 1998 - BATCH MODE I CURIES isotope Ouarter Qqmler Ouarter Ouarter ,
(Required by Regulatory (REG) Guide 1.21) 1 2 3 4
- l. Ba-140 -NR* NR NR ND
- 2. Ce-141 NR NR NR ND
- 3. Co-58. NR NR NR ND
- 4. Co-60 NR NR NR ND
- 5. Cr-51 NR NR NR ND
- 6. Cs-134 NR NR NR ND
- 7. Cs-137 NR NR NR ND
- 8. Fe-59 NR NR NR ND
- 9. 1-131 NR NR NR ND
- 10. La-140 NR NR NR ND 1
- 11. Mn-54 NR NR NR ND 4
- 12. Mo-99 NR NR NR 5.53E-06
- 13. Nb-95 NR NR NR ND
- 14. Sr-89 ' NR NR NR ND
- 17. Xe-133 NR NR NR ND l
. 18. Xe-135 NR NR NR 1.76E-08 19.- Zn-65 NR NR NR ND
- 20. Zr-95 NR NR NR ND
- NR - No liquid releases were made during the 1",2"d, or 3'd quarters. 1 E3-7
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EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT LIQUID RELEASES FOR YEAR 1998 - BATCH MODE CURIES halops . .
ouarter ouarter ouarter Ouarter Others (Not Required by REG Guide 1.21) 1 2 1 4
- 1. Na-24 NR* NR NR 4.88E-08
- NR -- No liquid releases were made during the 1",2"d, or 3'd quarters.
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l EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT GASEOUS EFFLUENTS - SUMMATION OF ALL RELEASES YEAR 1998 Units Qu_a net Ouarter Ouarter Ouarter % Error 1 2 3 4 A. Fission and Activation Gases 1.- Total Releases Ci 2.60E+03 1.21E+03 2.27E+02 2.79E+01 45
- 2. Average Release Rate for Period Ci/sec 3.35E+02 1.54E+02 2.85E+01 3.51E+00
- 3. Percent of Applicable limit % * * *
- B. Iodines
- 1. Total lodine-131 Ci 3.29E-02 4.31E-02 6.21E-03 9.83E-04 36
- 2. Average Release Rate for Period Ci/sec 4.23E-03 5.48E-03 7.82E-04 1.24E-04
- 3. Percent of Applicable Limit % * * *
- 1 C. Particulates
- 1. Particulates with half-lives
>leight days Ci 3.10E-03 2.38E-03 1.04E-03 1.27E-03 35
- 2. Average release rate for period pCi/sec 3.99E-04 3.03E-04 1.31E-04 1.59E-04
- 3. Percent of Applicable limit % * * * *
- 4. - Gross alpha radioactivity Ci ND ND ND ND D. .. Tritium
- 1. Total release Ci 1.66E+01 1.48E+01 2.39E+01 1.83E+01 21
- 2. Average release rate for period Ci/sec 2.14E+00 1,88E+00 3.01E+00 2.30E+00
- 3. Percent of Applicable Limit * * * *
- Applicable Limits are expressed in terms of dose. See Enclosure 1, Tables I through 4.-
l E3-9 i
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l EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT YEAR 1998 GASEOUS EFFLUENTS - ELEVATED RELEASE CURIES Quarter Ouarter Guarter Ouarter 1 2 3 4
- 1. Fission Gases Kr-85M 1.40E+02 1.72E+01 2.13E+01 3.44E+00 Kr-85 2.37E+01 3.03E+00 ND ND Kr-87 3.15E+01 1.05E+00 5.94E-01 2.46E+00 Kr-88 7.01E+01 1.33E+01 1.33E+01 5.30E+00 Xe-133 2.00E+03 1.13E+03 1.84E+02 3.66E+00 Xe-135M 6.07E+01 2.96E+00 3.30E-01 4.57E-01 Xe-135 y 1.1lE+02 1.05E+01 3.48E+00 1.56E+00 Xe-138 1.09E+02 9.39E+00 ND 2.13 E+00 Others (specify)
N-13 1.83E+01 1.08E+01 1.76E+00 7.56E+00 !
Ar-41 2.66E-01 2.71E-01 3.58E-01 1.30E%0 Xe-133M 7.50E+00 1.64E-K)1 1.86E+00 ND Xe-137 3.45E+01 2.33E%0 ND ND I. otal for Period 2.58E+03 1.21 E+03 2.26E+02 2.79E+01
I-135 ND ND ND ND Total for Period' 6.99E-03 1.11 E-02 1.66E-03 8.51 E-04 l
i E3-10
~1 1-EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT
.Y' EAR 1998 GASEOUS EFFLUENTS - ELEVATED RELEASE l 4
l CURIES Ouarter Ouarter Ouarter Ouarter i 1 2- 3 4
- 3. Particulates")
i Sr-89 3.19E-04 8.00E-05 2.93 E-05 3.21E-05 Sr-90 ND ND .ND ND' Cs-134 ~ ND 2.77E-06 ND ND I
. Cs-137 1.09E 1.73E-06 ND ND-Cs-138 3.19E-01 - 5.21E-02 ND ND Ba-140 1.58E-04 7.87E-05 2.65E-05 4.61 E-05
- La-140 8.90E-05 2.46E-05 2.35E-06 1.15E-05 . !
Others (specify)
Zn-69M 1.31 E-05 ND ND ND Rb-89 1.66E-01 3.28E-02 ND ND Sr-91 1.15E-03 2.46E-04 ND 9.85E-05 Y-91M 8.70E-04 3.93E-04 2.00E-04 3.86E-04 Ba-139 1.51E-01 4.47E-02 2.69E-03 1.99E-02
- Total for . Period") 6.39E-01 J.30E-01 2.94E-03 2.05E-02
- 4. Tritium 9.37E-01 7.58E-01 1.88E+00 9.63E-01
") Includes all nuclides, even those with less than an eight day half-life.
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EFFLUENT AND WASTE DISPOSAL' ANNUAL REPORT YEAR 1998 GASEOUS EFFLUENTS - GROUND RELEASE
' CURIES Ouarter Ouarter Guarter Ouarter 1 2 1 4
- 1. Fission Gases
' Kr-85M ND ND ND ND Kr-85 ND ND ND ND Kr-87 ND ND ND ND
- Kr-88 ND ND ND ND q i
Xe-133 2.89E-03 ND ND ND i l
Xe-135M ND ND ND ND Xe-135 ND ND ND ND Xe-138 ND ND ND ND Total for Period 2.89E-03 E @ @
- 2. Iodines !
I-131 6.81E-03 . 4.22E-03 2.97E-03 1.20E-04 I-132 5.63E-04 ND ND ND I-133 6.59E-03 5.48E-03 5.79E-03 4.79E-04 I-134 ND ND ND ND I-135 1.49E-04 ND ND ND Total for Period 1.41E-02 9.70E-03 8.76E-03 5.99E-04 i
E3-12 L.
EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT YEAR 1998 GASEOUS EFFLUENTS - GROUND RELEASE CURIES Qua_r_tgr Ouarter Ouaner Ouarter
Others (specify)
Cr-51 ND ND 4.15E-05 2.51E-06 l i Co-57 2.30E-06 ND ND ND Rb-89 . 2.99E-02 ND ND ND Sr-91 6.00E-04 ND ND ND Y-91M 2.27E-04 9.60E-06 ND ND l l Mo-99 ND 3.51E-06 ND ND Tc-99M ND 3.51E-06 ND ND l
Cs-138 1.35E-01 2.37E-02 ND ND i Ba-139 1.52E-02 6.14E-03 ND ND Total for Period") 1.81 E-01 2.99E-02 4.26E-05 2.51 E-06
- 4. - Tritium 1.84E+00 3.50E+00 5,75E+00 4.75E+00 (1) Include all nuclides even those with less than an eight day half-life.
1 E3-13
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[ EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT YEAR 1998
(-
l GASEOUS EFFLUENTS - MIXED MODE RELEASE ("
CURIES Ouarter Ouarter Ouarter Ouarter l _ 1 2 3 4 l 1. Fission Gases Kr-85M ND 7.82E-04 ND ND l
Kr-85 ND ND ND ND Kr-87 ND ND ND ND Kr-88 ND 2.50E-03 ND ND Xe-133 ND 2.82E-02 1.27E-02 ND Xe-135M ND 5.73E-03 ND ND Xe-135 ND 1.87E-02 1.02E-02 ND Xe-138 ND ND ND ND l J
Others(specify) -
NONE Total for Period E 5.59E-02 2.29E-02 @
l The Reactor Building and Radwaste Building are treated as split-level releases.
E3-14
E EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT YEAR 1998 GASEOUS EFFLUENTS - MIXED MODE RELEASEU)
CURIES
, Ouarter Ouarter Ouarter Ouarter
' 1 2 3 4
- 3. ParticulatesG)
Sr-89 2.57E-04 6.23E-05 2.05E-06 ND Sr-90 ND ND ND ND Cs-134 5.26E-04 6.63E-04 1.76E-04 1.llE-04 Cs-137 4.12E-04 5.57E-04 1.93E-04 1.57E-04 Ba-140 2.11E-04 1.41E-04 ND ND La-140 1.73E-04 2.56E-05 ND ND Others (specify)
Na-24 1.35E-03 4.23 E-04 1.06E-04 2.34E-04 Cr-51 8.61 E-04 6.15E-04 4.33 E-04 6.70E-04 Mn-54 3.26E-05 7.59E-06 1.06E-05 7.44E-06 Co-57 ND ND 2.79E-07 ND Co-58 1.63E-05 ND 7.67E-06 ND Co-60 6.46E-05 4.52E-05 6.77E-05 6.90E-05 Zn-65 1.23E-05 1.08E-05 3.59E-05 1.37E-04 Sr-91 3.91 E-03 3.51E-04 ND ND Sr-92 5.97E-04 ND ND ND
(" The Reactor Building and Radwaste Building are treated as split-level releases.
G) Includes all nuclides, even those with less than an eight day half-life.
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EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT YEAR 1998 GASEOUS EFFLUENTS - MIXED MODE RELEASE ("
CURIES Ouarter Ouarter Ouarter - Ouarter 1 2 3 4 G
Particulates ) (Continued) -
Others (specify) l Y-91M 2.46E-03 2.68E-04 7.94E-05 ND 1
Mo-99 3.44E-04 3.38E-04 5.56E-05 2.79E-05 Tc-99M 3.44E-04 2.59E-04 5.56E-05 2.79E-05 Ag-110M 8.93E-05 5.18E-05 1.52E-05 3.26E-05 Cs-136 - 3.48E-05 2.83 E-05 ND ND l Cs-138 2.43E-02 ND ND ND Ba-139 1.57E-02 3.07E-03 ND ND Np-239 6.91E-05 ND ND ND Total for PeriodG) 5.17E-02 6.92E-03 1.24E-03 1.47E-03
- 4. Tritium 1.38E+01 1.05E+01 1.63EMI 1.25E+01
(" The Reactor Building and Radwaste Building are treated as split-level releases.
(2) Includes all nuclides, even those with less than an eight day half-life.
l E3-16
n BROWNS FERRY NUCLEAR PLANT ANNUAL EFFLUENT AND WASTE DISPOSAL REPORT F
1998 SOLID WASTE AND IRRADIATED FUEL A. Solid Waste Shipped Off-site for Burial or Disposal (Not Irradiated Fuel) l 1. Tvoe of Waste Units Amount Error %
- a. Spent resins, filter sludge m3 1.45E+02 evaporator bottoms, etc. Ci 1.55+03 +/-25.0
- b. Dry compressible waste, contaminated m3 i,47E+01 equipment, etc. Ci 2.56E-01 +/-25.0
- c. Irradiated components, controlrod m3 0.00E+00 i- blades, etc. Ci 0.00E+00
- d. Cartridge filters m3 5.83E+00 Ci 5.30E+00 +/-25.0
- 2. Estimate of Major Nuclide Composition by Waste Type
- a. Spent resins, filter sludge, evaporator bottoms, etc.
Nuclide Percentane Activity (Curies)
- 1. Cobalt 60 (g) - 2.95E+01 4.57E+02
- 2. 2inc65 (1) 2.31 E+01 3.58E+02
- 3. . Cesium 137 (1) .1.54 E+01 2.38E+02
- 4. Cesiuml34 (1) 1.48E+01 2.29E+02
- 5. Iron 55 (2) 7.43E+00 1.15 E+02 ;
6 Manganese 54 (1) 4.45E+00 6.90E+01
- 7. . Silver 110m (1) 3.05E+00 4.73E+01
- 8. ' Nickel 63 (2) 9.55E-01 1.48E+01
- 9. Cobalt 58 (g) 4.89E-01 7.58E+00
- 10. lodinel31 (1) 4.22E-01 6.54E+00 l
- 11. Chromium 51 (1) 2.58E-01 4.00E+00
- 12. . Technetium 99 (2) 7.20E-02 1.12E+00
- 13. Ceriuml44 (2) 5.20E-02 8.10E-01
- 14. CarbonI4 (2) 2.40E-02 3.70E-01
- 15. Bariuml40
~
(1) 1.80E-02 2.80E-01 16.- ' Other <l.0E-01 <l .44E+00 E3-17
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BROWNS FERRY NUCLEAR PLANT ANNUAL EFFLUENT AND WASTE DISPOSAL REPORT 1998 SOLID WASTE AND 1RRADIATED FUEL l A. Solid Waste Shipped Off-site for Burial or Disposal (Not Irradiated Fuel) l (Continued)
- 2. Estimate of Major Nuclide Composition by Waste Type (Continued)
- b. Dry compressible waste, contaminated equipment, etc.
Nuclide Percentare Activity (Curies)
- 1. Cobalt 60 (2)-- 3.04E+01 7.76E-02
- 2. Iron 55 (2) 2.39E+01 6.10E-02
- 3. Cesium 134. (2) 1.01E+01 2.58E-02
- 4. Cesium 137 (2) 9.44E+00 2.41 E-02
- 5. Zinc 65 (2) 9.01E+00 2.30E-02
- 6. Manganese54 (2) 8.86E+00 2.27E-02
- 7. Silverl10m (2) 5.61E+00 1.44E-02 8- Chromium 51 (2) 1.89E+00 4.82E-03
- 9. Nickel 63 (2) 3.75E-01 9.59E 04
- 10. Other <l.0E-01 <l .34-03
- c. Irradiated components (control rod blades), etc.
NONE t
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1 E3-18
7 CROWNS FERRY NUCLEAR PLANT ANNUAL EFFLUENT AND WASTE DISPOSAL REPORT 1 1998 SOLID WASTE AND IRRADIATED FUEL
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A. Solid Waste Shipped Ofr-site for Burial or Disposal (Not Irradiated Fuel)
(Coi.tinued) 1
- 2. Estimate of Major Nuclide Composition by Waste Type (Continued) i
- d. Cartridge filters Nuclide . Eetcentage e Activity (Curies)
- 1. Zinc 65 (2) 5.62E+01 2.98E+00
. 2. Cobalt 60 (2) 1.52E+01 8.06E-01
- 3. Cesitt.nl37 (2) 8.13E+00 4.31E-01
- 4. Cesium 134 (2) 6.30E+00 3.34E-01
- 5. Iron 55 (2) 5.15E+00 2.73E-01
- 6. Silverl10m (2) 4.74E+00 2.51E-01 ,
- 7. Manganese 54 (2) 2.83EM)0 - 1.50E-01
- 8. Nickel 63 (2) 6.20E-01 3.30E-02 i
- 9. Cobalts 8 (2) 5.50E-01 2.90E-02 l
- 10. OJicr (2) <l .00E+00 <l.30E-02 i
(1) Measured (2) Calculated
- 3. Solid Waste Disposition Number of Shipments Mode of Transnortation Destination 1 Sole Use Truck Chem Nuclear Systems, Inc, Disposal Site, Barnwell, SC 2 Sole Use Truck Scientific Ecology Group, Oak Ridge, TN 1 Sole Use Truck American Ecology Recycle Center Oak Ridge, TN 5 Sole Use Truck GTS Duratec Oak Ridge,TN l
36 Sole Use Truck Chem Nuclear Systems, Inc.,
Processing Facility,
, Barnwell, SC E3-19 l
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i CROWNS FERRY NUCLEAR PLANT ANNUAL EFFLUENT AND WASTE DISPOSAL REPORT 1998 SOLID WASTE AND IRRADIATED FUEL B.~ Irradiated Fuel Disposition Number of Shioments Mode of Transportation Destination None N/A N/A l C. Description of Shipments l
Number of Type Type ' Number of Container Waste Shioments Containqr Ouantity Containe-s Volume La 8 Strong Tight A-LSA II 20 See Note DAW Container (STC) 1 HIC / Cask A-LSA II 1 5.83 Dewatered Filters 2 HIC / Cask >A-LSA 11 2 5.83 Dewatered Resin 8 HlC/ Cask >A-LSA 11 8 4.84 Dewatered Resin 4' HIC / Cask A-LSA 11 '4 4.84 Dewatered Resin 7 HIC / Cask A-LSA 11 7 3.41 Dewatered Resin 15 HIC / Cask >A-LSA 11 15 3.41 Dewatered Resin Solidification Agents Used: None
' Absorbents Used: None NOTE: The 8 shipments of waste packaged in strong tight containers consisted of the following:
Number of Packaces Volume Each Packace (m 3 )
hoe of STC 40' "Sealand" 5 72.5 20' "Seaiend" 4 36.3 M etal B a 11 2.66 E3-20
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- EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT l
SUMMARY
OF ABNORMAL / UNPLANNED RELEASES 1998 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. There were no limits exceeded as specified in 10 CFR 20 Appendix B and 10 CFR 50 Appendix I. No planned liquid releases were made in 1998 from the Browns Ferry radwaste system.
l One abnormalliquid release occurred in November,1998. This release was a result of contamination of the plant's demineralized (DI) water. The DI water contamination was caused by a failure of the reactor water 4
cleanup sample pump's packing. Prompt measures were taken to terminate the release and prevent further i recurrence. Minimal activity (14 pCi) was released resulting in a dose of <2E-07% of the individual quarterly I dose limits. The total ECL fraction of the release was 3.64E-05. The liquid effluent and dose summary is in the l main body of this report (See Liquid Effluents Tables for the fourth quarter for a detailed listing of radionuclides and Table 8; Doses from Liquid Effluents Fourth Quarter for a summary of dose values.).
1 During the reporting period, January 1 through December 31,1998, there was one missed compensatory
]
measure. A required ODCM compensatory sample for the 2-RM-90-132 monitor was not counted within the . i required 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br />. The samples were obtained within the required time and one of the two samples was counted
. within the required time. The second sample analyses was initiated one minute beyond the required 8 hour9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> analysis period. The data was evaluated and the data showed normal trends. A thorough analysis of the event I and corrective actions is given in BFPER98-010663.
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ENCLOSURE 4 TENNESSEE VALLEY AUTHORITY BROWNS FERRY NUCLEAR PLANT (BFN)
UNITS 1, 2, AND 3 I INOPERABLE RADIOLOGICAL EFFLUENT INSTRUMENTATION REPORT l 1998 l
See Attached:
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INOPERABLE RADIOLOGICAL EFFLUENT INSTRUMENTATION REPORT
- This report is to comply with Browns Ferry Nuclear Plant Offsite Dose Calculation Manual (Offsite Dose Calculation Manual (ODCM)), Sections 1/2.1.1 and 1/2.1.2. The ODCM requires the exertion of best I efforts to retum operable status within 30 days. Failure to retum the inoperable instruments to an operable status requires a description in the Annual Radioactive Effluent Release Report.
During the reporting period, January 1 through December 31,1998, there were no airbome or liquid radiation monitors inoperable for periods greater than 30 days.
Some effluent monitors were placed in "out-of-service" status because these monitors' effluent streams were .
isolated. Therefore, these monitors are not included in this report. !
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1 ENCLOSURE 5. j TENNESSEE-VALLEY AUTHORITY l BROWNS FERRY NUCLEAR PLANT (BFN) I UNITS 1, 2, AND 3 CHANGES TO THE OFFSITE DOSE CALCULATION MANUAL 1998 l
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1 See Attached:
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CHANGES TO THE OFFSITE DOSE CALCULATION MANUAL (ODCM)
This report covers the period from January 1 through December 31, 1998. During this time,-two' revisions of the ODCM were issued. ;
Revision 11 became effective July 27, 1998. Revision 12 became ]
effective on December 3, 1998. See the attached Revision 12 for j ODCM Revision 11 and 12 markups. I REVISION 11 Revised references to comply with Section 6, Administrative Controls (TS-372 and ITS (TS-362) amendments.
Section 6.9.1.4 was deleted from the' Technical Specifications (TS-362); therefore, the reporting requirements was changed to report deviations in the next Annual Radioactive Effluent Release Report.
Add a definition of RATED POWER and a table for mode consistent I with Power Uprate Operation amendment (TS 384). I Deleted sentences in section 6.1.1 and 7.3.1 which allowed the use of-precious composite sample concentrations for calculating and reporting purposes.
Updated Table of Content page numbers.
REVISION 12
- Revised Radiological Environmental Monitoring Program sample collection details.
Removed clams from the aquatic sample list.
Changed sediment sample locations.
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