ML18036B024: Difference between revisions

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JOINT PERCENTAGE FREQUENCIES            D SPEED    BY WIND DIRECTION FOR STABILITY CLASS    G  (DELTA T  >  4.0 C/100  M)
JOINT PERCENTAGE FREQUENCIES            D SPEED    BY WIND DIRECTION FOR STABILITY CLASS    G  (DELTA T  >  4.0 C/100  M)
BROWNS FERRY NUCLEAR PLANT JUL  1,. 91  SEP 30, 91 WIND                                                WIND SPEED(MPH)
BROWNS FERRY NUCLEAR PLANT JUL  1,. 91  SEP 30, 91 WIND                                                WIND SPEED(MPH)
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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            0.0        0.0          0.0        0.0          0.0        0.0          0.076      0.0                    a.076 NNE-        0.0        0.0          0.0        0.0          0.0        0.0          0.0        0.0        0.0        0.0 NE          0.0        0~0          0.0        0.0          0.0        0.0          0.0        0.0        0.0        0.0 EHE          0.0        0.0          0.0        0.0          0.0        0.0          0.0        0.0        Q.Q        0.0 E            0.0        0.0          0.0        0.0          0.046      0.0          0.0        0.0        0.0        0.046 ESE          0.0        0.0          0.0        0.0          0.0        0.0          0.0        0.0        0.0        0.0 SE          0.0        0.0          0.0        0. 281        0.228      0.043        0.0        0.0        O.a        0.552 SSE          0.0        0.0          0.0        0.047        0.046      0.082        0.0        0.0        0.0        0.176 S            0.0        0 ~0        0.0        0  0  ~      0.0        0.0          0:0        0.0        o.a        0.0 SSW          0.0        0.0          0.047      0.047        0.046      0.043        0.0        0.0        0.0        0.183 SW WSW 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.140 0.0 0.0 0.0 0.092 0.0 0.0 0.0 0.0 0.0 0.0 0.0 a.o'.Q 0.0 Q.Q 0.0 o.a a.o 0.0 0.140 0.092 0.0 WHW          0.0        0.0          0.0        0.0          0.0        0.081        0.0        0.0        0.0        0.081 NW          0.0        0.0          0.0        0.0          0.0        0.0          0.039      0.0        0.0        0.039 HNW          0.0        0.0          0.0        0.0          0.0        0.0          0.0        Q.o        0.0        0.0 SUBTOTAL        0.0        0.0          0.047      Q. 515        0.459          '.249 0.115                  0.0        1.384 TOTAL HOURS OF VALID OBSERVATIONS                  2136.000 TOTAL HOURS OF ELEVATED RELEASES                    2025.449 TOTAI HOURS OF STABILITY CLASS C                      35.280 TOTAL HOURS OF ELEVATED STABILITY CLASS C              29.570 METEOROLOGICAL FACILITY:      MET FACILITY LOCATED 1 ~ 3 KM ESE OF BROWNS PERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 45.30 AND 89.60 METERS WIND DIRECTION MEASURED AT 45 ~ 67 METER IEVEL WIND SPEED MEASURED AT 45.67 METER IEVEL EFFLUENT VELOCITY ~ 12.60 M/S                                                                                                        %44C DATE PRINTED: 10/28/91    00 lD M 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 N            0.0        0.0          0.0        0.0          0.0        0.0          0.076      0.0                    a.076 NNE-        0.0        0.0          0.0        0.0          0.0        0.0          0.0        0.0        0.0        0.0 NE          0.0        0~0          0.0        0.0          0.0        0.0          0.0        0.0        0.0        0.0 EHE          0.0        0.0          0.0        0.0          0.0        0.0          0.0        0.0        Q.Q        0.0 E            0.0        0.0          0.0        0.0          0.046      0.0          0.0        0.0        0.0        0.046 ESE          0.0        0.0          0.0        0.0          0.0        0.0          0.0        0.0        0.0        0.0 SE          0.0        0.0          0.0        0. 281        0.228      0.043        0.0        0.0        O.a        0.552 SSE          0.0        0.0          0.0        0.047        0.046      0.082        0.0        0.0        0.0        0.176 S            0.0        0 ~0        0.0        0  0  ~      0.0        0.0          0:0        0.0        o.a        0.0 SSW          0.0        0.0          0.047      0.047        0.046      0.043        0.0        0.0        0.0        0.183 SW WSW 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.140 0.0 0.0 0.0 0.092 0.0 0.0 0.0 0.0 0.0 0.0 0.0 a.o'.Q 0.0 Q.Q 0.0 o.a a.o 0.0 0.140 0.092 0.0 WHW          0.0        0.0          0.0        0.0          0.0        0.081        0.0        0.0        0.0        0.081 NW          0.0        0.0          0.0        0.0          0.0        0.0          0.039      0.0        0.0        0.039 HNW          0.0        0.0          0.0        0.0          0.0        0.0          0.0        Q.o        0.0        0.0 SUBTOTAL        0.0        0.0          0.047      Q. 515        0.459          '.249 0.115                  0.0        1.384 TOTAL HOURS OF VALID OBSERVATIONS                  2136.000 TOTAL HOURS OF ELEVATED RELEASES                    2025.449 TOTAI HOURS OF STABILITY CLASS C                      35.280 TOTAL HOURS OF ELEVATED STABILITY CLASS C              29.570 METEOROLOGICAL FACILITY:      MET FACILITY LOCATED 1 ~ 3 KM ESE OF BROWNS PERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 45.30 AND 89.60 METERS WIND DIRECTION MEASURED AT 45 ~ 67 METER IEVEL WIND SPEED MEASURED AT 45.67 METER IEVEL EFFLUENT VELOCITY ~ 12.60 M/S                                                                                                        %44C DATE PRINTED: 10/28/91    00 lD M I
lA U  D>
lA U  D>
lA lD  D NOTE:  TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS                                                                        0 Q      H th w 9 M  'U
lA lD  D NOTE:  TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS                                                                        0 Q      H th w 9 M  'U h)t
                                                                                                                                        <
h)t
                                                                                                                                             '4  0 0
                                                                                                                                             '4  0 0


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JOINT PERCENTAGE FREQUENCIES STABILITY CLASS  D  (-1 ~ 5<
JOINT PERCENTAGE FREQUENCIES STABILITY CLASS  D  (-1 ~ 5<
D SPEED  BY WIND  DIRECTION FOR DELTA-T<~-0. 5 C/100 M) 0 BROWNS PERRY NUCLEAR PLANT OCT  1, 91  DEC 31, 91 WIND                                                WIND SPEED(MPH)
D SPEED  BY WIND  DIRECTION FOR DELTA-T<~-0. 5 C/100 M) 0 BROWNS PERRY NUCLEAR PLANT OCT  1, 91  DEC 31, 91 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        0.0        0.186      0.558      0.418        1.069        0.046      0.0        0.0        2.282 NNE          0.004        0.046      0.139      0.139      0.279        0.604        0.0        0.0        0.0        1.212 NE            0 '05        0.046      0.232      0.511      0.325        0.186        0.0        0.0        0.0        1.307 ENE          0.008        0.046      0.372      0.465      0.418        0.0          0.0        0.0        0.0        1. 310 E            0.010        0.139      0.372      0.604      0.139        0.0          0.0        0.0        0.0        1.265 ESE          0.021        0.0        1.116      0.837      0.139        0.046        0.0        0.0        0.0        2.160 SE            0.023        0.186      1.023      0.651      0.232        0.511        0.0        0.0        0.0        2.626 0.027        0.139      1.302
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        0.0        0.186      0.558      0.418        1.069        0.046      0.0        0.0        2.282 NNE          0.004        0.046      0.139      0.139      0.279        0.604        0.0        0.0        0.0        1.212 NE            0 '05        0.046      0.232      0.511      0.325        0.186        0.0        0.0        0.0        1.307 ENE          0.008        0.046      0.372      0.465      0.418        0.0          0.0        0.0        0.0        1. 310 E            0.010        0.139      0.372      0.604      0.139        0.0          0.0        0.0        0.0        1.265 ESE          0.021        0.0        1.116      0.837      0.139        0.046        0.0        0.0        0.0        2.160 SE            0.023        0.186      1.023      0.651      0.232        0.511        0.0        0.0        0.0        2.626 0.027        0.139      1.302 SSE                                                0.651      0.0          0.0          0.0        0.0        0.0        2.119 S            0.006        0.046      0.279      0.232      0.046        0.0          0.0        0.0'0.0 0.0        0. 611 SSW          0.006        0.046      0.279      0.093      0.046        0.0          0.0                    0.0        0.471 SW            0.007        0.186      0.186      0.139      0.0          0.0          0.0        0.0        0.0        0. 518 WSW          0.005        0.0        0.279      0.139      0.232        0.186        0.0        0.0        0.0        0.842 W            0.004        0.0        0. 186      0.372      0.790        0.976        0.139      0.0        0.0        2.467 WNW          0.004        0.046      0.186      0.279      0.139        0.883        0.744      0.0        0.0          2.282 HW            0.003        0.0        0.139      0.279      0.232        1.302        1.116      0.139      0.0          3.210 NNW          0.003        0.0        0. 139      0.418      0.604        1.302        0.372      0.0        0.0          2.839 SVBTOTAL          0.139        0.930      6.416      6.369      4.045        7.066        2. 417    0.139      0.0        27.522 TOTAl  HOURS OP VALID STABZLITY OBSERVATIONS                                  2183 TOTAl  HOVRS OP STABILITY CLASS D                                              593 TOTAL  HOURS OF VALID WIND DZRECTZON-WIND SPEED-STABILITY CLASS D              592 TOTAL  HOURS OF VALID WIND DIRECTZON-WZND SPEED-STABILITY OBSERVATIONS        2151 TOTAL  HOURS CALM                                                                  3 METEOROlOGICAL PACZLZTY: MET FACILITY LOCATED 1.3 KM ESE OP BROWNS FERRY NUCI,EAR PLANT STABILITY BASED ON LAPSE RATE MEASURED BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT THE 10.42 METER LEVEL DATE PRINTED:  01/22/92 MEAN WIND SPEED ~      6.4 MPH
                                                                                            ,
SSE                                                0.651      0.0          0.0          0.0        0.0        0.0        2.119 S            0.006        0.046      0.279      0.232      0.046        0.0          0.0        0.0'0.0 0.0        0. 611 SSW          0.006        0.046      0.279      0.093      0.046        0.0          0.0                    0.0        0.471 SW            0.007        0.186      0.186      0.139      0.0          0.0          0.0        0.0        0.0        0. 518 WSW          0.005        0.0        0.279      0.139      0.232        0.186        0.0        0.0        0.0        0.842 W            0.004        0.0        0. 186      0.372      0.790        0.976        0.139      0.0        0.0        2.467 WNW          0.004        0.046      0.186      0.279      0.139        0.883        0.744      0.0        0.0          2.282 HW            0.003        0.0        0.139      0.279      0.232        1.302        1.116      0.139      0.0          3.210 NNW          0.003        0.0        0. 139      0.418      0.604        1.302        0.372      0.0        0.0          2.839 SVBTOTAL          0.139        0.930      6.416      6.369      4.045        7.066        2. 417    0.139      0.0        27.522 TOTAl  HOURS OP VALID STABZLITY OBSERVATIONS                                  2183 TOTAl  HOVRS OP STABILITY CLASS D                                              593 TOTAL  HOURS OF VALID WIND DZRECTZON-WIND SPEED-STABILITY CLASS D              592 TOTAL  HOURS OF VALID WIND DIRECTZON-WZND SPEED-STABILITY OBSERVATIONS        2151 TOTAL  HOURS CALM                                                                  3 METEOROlOGICAL PACZLZTY: MET FACILITY LOCATED 1.3 KM ESE OP BROWNS FERRY NUCI,EAR PLANT STABILITY BASED ON LAPSE RATE MEASURED BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT THE 10.42 METER LEVEL DATE PRINTED:  01/22/92 MEAN WIND SPEED ~      6.4 MPH
                                                                                                                                         'U 4 NOTE: TOTALS AND SUBTOTALS ABOVE ARE OBTAINED PROM UNROVNDED NUMBERS                                                                    00 ID M
                                                                                                                                         'U 4 NOTE: TOTALS AND SUBTOTALS ABOVE ARE OBTAINED PROM UNROVNDED NUMBERS                                                                    00 ID M
                                                                                                                                         ~am  I Ooe a.
                                                                                                                                         ~am  I Ooe a.
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SPLIT JOINT PERCENTAGE FREQUENCI          WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS    D    (-1.5<  DELTA  T<~-0.5 C/100 M)
SPLIT JOINT PERCENTAGE FREQUENCI          WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS    D    (-1.5<  DELTA  T<~-0.5 C/100 M)
BROWNS FERRY NUCLEAR PLANT PART 2 OP 2 ELEVATED RELEASE MODE OCT  li 91    DEC 3li 91 WIND                                              WIND SPEED(MPH)
BROWNS FERRY NUCLEAR PLANT PART 2 OP 2 ELEVATED RELEASE MODE OCT  li 91    DEC 3li 91 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            0.003      0.0        0.143      0.380        0.411      1.787      0.774      0.0          0.0          3.498 NNE          0.003      0.0        0.143      0.095        0.363      1.285      0.506      0.0          0.0          2.395 NE          0.004      0.048      0.143      0.190        0.319      0.542      0.078      0.0          0.0          1.323
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      0.0        0.143      0.380        0.411      1.787      0.774      0.0          0.0          3.498 NNE          0.003      0.0        0.143      0.095        0.363      1.285      0.506      0.0          0.0          2.395 NE          0.004      0.048      0.143      0.190        0.319      0.542      0.078      0.0          0.0          1.323 ENE          0.002      0.0        0.095      0.238        0.319      0.296      0.0        0.0          0.0          0.950 E            0.005      0.0        0.238      0.095        0.408      0.418      0.0        0.0          0.0          1.165 ESE          0.012      0.0        0.571      0.808        0.598      0.719      0.0        0.0          0.0          2.708 SE          0.018      0.048      0.856      1.094        0.961      l. 547      0.542      0.227        0. 010      5.303 SSE          0.012      0.143      0.476      0.523        0.229      l. 279      0.964      0.115        0.032        3.772 S            0.011      0.048      0.476      0.380        0.320      0.868      0.849      0.358        0. 011      3.319 SSW          0.005      0.0        0.238      0.190        0.180      0.207      0.154      0.028        0.0          1. 001 SW          0.006      0.143      0.143      0.571        0.189      0.296      0.039      0.0          0.0          1.385 WSW          0.001      0.0        0.048      0.380        0.185      0.454      0.115      0.0        0.0          1.183 W            0.003 0.007 0.0 0.0 0.143 0.333 0.285 0.285 0.142 0.274
  -
ENE          0.002      0.0        0.095      0.238        0.319      0.296      0.0        0.0          0.0          0.950 E            0.005      0.0        0.238      0.095        0.408      0.418      0.0        0.0          0.0          1.165 ESE          0.012      0.0        0.571      0.808        0.598      0.719      0.0        0.0          0.0          2.708 SE          0.018      0.048      0.856      1.094        0.961      l. 547      0.542      0.227        0. 010      5.303 SSE          0.012      0.143      0.476      0.523        0.229      l. 279      0.964      0.115        0.032        3.772 S            0.011      0.048      0.476      0.380        0.320      0.868      0.849      0.358        0. 011      3.319 SSW          0.005      0.0        0.238      0.190        0.180      0.207      0.154      0.028        0.0          1. 001 SW          0.006      0.143      0.143      0.571        0.189      0.296      0.039      0.0          0.0          1.385 WSW          0.001      0.0        0.048      0.380        0.185      0.454      0.115      0.0        0.0          1.183 W            0.003 0.007 0.0 0.0 0.143 0.333 0.285 0.285 0.142 0.274
: l. 194 0.957 0.773 1.004 0.129      0.0          2.669 WNW                                                                                              0.320      0.010        3.191 NW          0.002      0.048      0.048      0.048        0.320      1.335      0.925      0. 461      0.003        3.189 NNW          0.003      0.0        0.143      0.048        0.454      1.495      0.698      0.122      0.0          2.962 SUBTOTAL          0.095      0.476      4.232      5.611        5.672      14.680      7.420      1.760      0.066      40.011 TOTAL HOURS OF VALID OBSERVATIONS                2103.000 TOTAL HOURS OP ELEVATED RELEASES                  1872.569 TOTAL HOURS OF STABILITY CLASS D                    904.770 TOTAL HOURS OF ELEVATED STABZI ITY CLASS D          841.450 METEOROLOGICAL FACILITY:    MET FACILITY LOCATED 1.3 KM ESE OF BROWNS PERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 45.30 AND 89.60 METERS WIND DZRECTZON MEASURED AT 45.67 METER LEVEL WIND SPEED MEASURED AT 45.67 METER LEVEI EPPLUENT VELOCITY ~ 12.60 M/S DATE PRINTED:  01/22/92      WW      ti>
: l. 194 0.957 0.773 1.004 0.129      0.0          2.669 WNW                                                                                              0.320      0.010        3.191 NW          0.002      0.048      0.048      0.048        0.320      1.335      0.925      0. 461      0.003        3.189 NNW          0.003      0.0        0.143      0.048        0.454      1.495      0.698      0.122      0.0          2.962 SUBTOTAL          0.095      0.476      4.232      5.611        5.672      14.680      7.420      1.760      0.066      40.011 TOTAL HOURS OF VALID OBSERVATIONS                2103.000 TOTAL HOURS OP ELEVATED RELEASES                  1872.569 TOTAL HOURS OF STABILITY CLASS D                    904.770 TOTAL HOURS OF ELEVATED STABZI ITY CLASS D          841.450 METEOROLOGICAL FACILITY:    MET FACILITY LOCATED 1.3 KM ESE OF BROWNS PERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 45.30 AND 89.60 METERS WIND DZRECTZON MEASURED AT 45.67 METER LEVEL WIND SPEED MEASURED AT 45.67 METER LEVEI EPPLUENT VELOCITY ~ 12.60 M/S DATE PRINTED:  01/22/92      WW      ti>
C 00 0  YI NOTE:  TOTALS AND SUBTOTALS ARE OBTAZNED PROM UNROUNDED NUMBERS (D  C O
C 00 0  YI NOTE:  TOTALS AND SUBTOTALS ARE OBTAZNED PROM UNROUNDED NUMBERS (D  C O
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ENCLOSURE 4 TENNESSEE VALLEY AUTHORITY SEMIANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT BROGANS FERRY NUCLEAR PLANT (BFN)
ENCLOSURE 4 TENNESSEE VALLEY AUTHORITY SEMIANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT BROGANS FERRY NUCLEAR PLANT (BFN)
CHANGES TO THE BFN OFFSITE DOSE CALCULATION MANUAL JULY THROUGH DECEMBER 1991
CHANGES TO THE BFN OFFSITE DOSE CALCULATION MANUAL JULY THROUGH DECEMBER 1991

Revision as of 15:35, 3 February 2020

Semiannual Radioactive Effluent Rept for Jul-Dec 1991. W/920228 Ltr
ML18036B024
Person / Time
Site: Browns Ferry  Tennessee Valley Authority icon.png
Issue date: 12/31/1991
From: Baron R
TENNESSEE VALLEY AUTHORITY
To:
NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
NUDOCS 9203060165
Download: ML18036B024 (145)
v • d • e


Text

ACCELERATED DIM3UBUTION DEMONSTPA.TION SYSTEM I

REGULAT% INFORMATION DISTRIBUTIOtYSTEM (RIDE)

ACCESSION NBR:9203060165 DOC.DATE: 91/12/31 NOTARIZED: NO DOCKET FACIL:50-259 Browns Ferry Nuclear Power Station, Unit 1, Tennessee 05000259 50-260 Browns Ferry Nuclear Power Station, Unit 2, Tennessee 05000260 50-296 Browns Ferry Nuclear Power Station, Unit 3, Tennessee 05000296 AUTH. NAME AUTHOR AFFILIATION BARON,R.R. Tennessee Valley Authority RECIP.NAME RECIPIENT AFFILIATION

SUBJECT:

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

W/920228 ltr.

DISTRIBUTION CODE: IE48D COPIES RECEIVED:LTR ENCL SIZE:

TITLE: 50.36a(a)(2) Semiannual Effluent Release Reports NOTES: 5&~ E<<ICDI1 RECIPIENT COPIES RECIPIENT COPIES ID CODE/NAME LTTR ENCL ID CODE/NAME LTTR ENCL SANDERS,M, 3 3 HEBDON,F 1 1 ROSS,T. 1 1 WILLIAMS,J. 1 1 INTERNAL: AC 1 1 NRR/DREP/PRPB11 2 2 Ol 1 1 RGN2 DRSS/RPB 2 2 RGN2 FILE 02 1 1 EXTERNAL: BNL TICHLER,J03 1 1 EGGG SIMPSONFF 2 2 NRC PDR 1 1 NOTE TO ALL "RIDS" RECIPIENTS'LEASE HELP US TO REDUCE WASTE! CONTACl'HE DOCUMENT CONTROL DESK, ROOM Pl-37 (EXT. 20079) TO ELIMINATEYOUR NAME FROM DISTRIBUTION LISTS FOR DOCUMENTS YOU DON'T NEED!

TOTAL NUMBER OF COPIES REQUIRED: LTTR 17 ENCL

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Tennessee Valley Authority, Post Office sox 2000. Decatur, Alabama 35609 FEB 28 >992 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, D.C. 20555 Gentlemen:

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

1. The Radiological Impact Assessment Report (Enclosure 1)
2. Effluent and Waste Disposal Semiannual Report (Enclosure 2)
3. The Inoperable Radioactive Effluent Instrumentation Report (Enclosure 3)
4. Changes to the offsite Dose Calculation Manual (Enclosure 4)

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

65OC52 92030b01b5 911231 I PDR ADOCK 05000259 R PDR

U.S. Nuclear Regulatory Commission FEB 28 >sw.

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

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

NRC Resident Inspector Browns Ferry Nuclear Plant Route 12, Box 637 Athens, Alabama 35611 Mr. Thierry M. Ross, Project Manager U.S. Nuclear Regulatory Commission One White Flint, North 11555 Rockville Pike Rockville, Maryland 20852 Mr. B. A. Wilson, Project Chief U.S. Nuclear Regulatory Commission Region II 101 Marietta Street, NW, Suite 2900 Atlanta, Georgia 30323 Mr. Paul Krippner American Nuclear Insurers The Exchange, Suite 245 270 Farmington Avenue Farmington, Connecticut 06032

ENCLOSURE 1 TENNESSEE VALLEY AUTHORITY SEMIANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT BROWNS'ERRY NUCLEAR PLANT (BFN)

"THE RADIOLOGICAL IMPACT ASSESSMENT REPORT"

, 9203060165

h BFN Rad Impact July-Dec 1991 Page 1 of 72

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

'Radiological Effluent Manual. Measured plant releases for the'eporting period are used to estimate these doses. Dispersion of radioactive effluents in the environment is estimated in accordance with the guidance provided by Regulatory Guides 1.109, l.ill and 1.113 using meteorological data and riverflow data measured during the period. Using dose calculation methodologies which are described in detail in the Browns Ferry Offsite Dose Calculation Manual, the doses are calculated and used to determine compliance with the dose limits contained in Browns Ferry's Operating License. In this report, the doses resulting from releases are described and compared to quarterly and annual limits established for Browns Ferry.

SUMMARY

OF LI UID AND GASEOUS EFFLUENT RELEASES SECOND HALF 1991 Although nuclear plants are designed to contain the radioactive material created by the fission process, small amounts of this material escape from the fuel rods. Also, very small amounts of the structures and components of the systems become activated through the bombardment of neutrons and are worn away. This radioactive material can be transported throughout plant systems and released to the environment.

Airborne Releases The noble gas fission products do not mix with water and are given off in a gaseous form. A very small amount of solid radioactivity is given off along with these noble gases. The most significant releases are processed so that the radioactive material is filtered and/or decayed prior to release through the plant vents. Sampling and monitoring methods are used to determine the amount of radioactive material released.

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

Li uid Releases Some small amounts of radioactive material migrate into the primary coolant water. The primary coolant water is routed through a purification system to remove most of these particles; however, not all are removed. Some of the radioactive liquids may leak from pipes or valves in the system. These liquids are collected in floor

BFN Rad Impact July-Dec 1991 Page 2 of 72 and equipment drains and sumps. The collected liquids are then processed through a clean-up system, composed of storage tanks, recycling systems, and demineralizers, to remove contaminants. The purified water is. then monitored to determine the amount of radioactive material remaining in the water prior to its release. Steps are taken to ensure that, the amount of radioactivity released to the environment is as low as reasonably achievable (ALARA). If the levels of radioactivity are above preset limits, the releases are circulated through the clean-up system again for additional processing. All radioactivity released from the plant into the Tennessee River is quantified prior to release.

Effluent Monitorin

'Plant paths through which radioactivity is released are monitored. These monitors record the radiation levels for each release. Monitors which are used for liquid releases will automatically alarm and stop any release which is above regulatory limits. Gaseous release monitors also provide alarming mechanisms to allow for the termination of any release above limits.

DOSE LIMITS The U.S. Nuclear Regulator Commission (NRC) requires nuclear power plants to be designed, built, and operated in such a way that the levels of radioactive material released into unrestricted areas is as low as reasonably achievable (ALARA). To ensure that this is done, the plant's operating license includes Technical Specifications which govern the release of radioactivity. These Technical Specifications specify limits for the release of radioactive effluents, as well as limits for doses to the general public from the release of these effluents. These limits are set well below the NRC 10CFR20 limits which govern the concentrations of radioactivity and exposures permissible in unrestricted areas. This ensures that radioactive effluent releases are ALARA.

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

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

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

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

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

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

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

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

DOSE CALCULATIONS Estimated doses to the public are determined using computer models (the Gaseous Effluent Licensing Code, GELC, and the Quarterly Water Dose Assessment Code, QWATA). These models are based on guidance provided by the NRC (in Regulatory Guides 1.109, 1.111 and 1.113) for determining the potential dose to individuals and populations living in the vicinity of the plant. The area around the plant is analyzed to determine the pathways through which the public may receive a dose. The doses calculated are a representation-of the dose to a "maximum exposed individual." Some of the factors used in these calculations (such as ingestion rates) are maximum values.

Many of these factors are obtained from NUREG/CR-1004. The values chosen will tend to overestimate the dose to this "maximum" person.

The expected dose to actual individuals is lower. The calculation methods and results of the calculations are presented in the following sections.

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

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

'he concentrations of radioactivity in the air and the soil are estimated by the computer model GELC which uses the actual meteorological conditions to determine the distribution of the effluents in the atmosphere. Again, as many of the parameters as possible are based on actual site specific data. The model that is used to estimate dose, as well as the parameters input to the model, is described in detail in Section 1.0 of the Browns Ferry Nuclear Plant Offsite Dose Calculation Manual.

Airborne Release Points and Meteorolo ical Data Meteorological variables at Browns Ferry are measured continuously.

Measurements collected include wind speed, wind direction, and temperature at heights of 10, 46 and 91 meters above the joint frequency distributions (JFDs) are calculated for ground.'uarterly each release point using the appropriate levels of meteorological data. A joint frequency distribution gives the percentage of the time in a quarter that the wind is blowing out of a particular upwind compass sector in a particular range of wind speeds for a given stability class A through G. The wind speeds are divided into nine wind speed ranges. Calms are distributed by direction in proportion to the distribution of noncalm wind directions less than 0.7 m/s (1.5 mph). Stability classes are determined from the vertical temperature difference between two measurement levels.

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

BFN Rad Impact July-Dec 1991 Page 5 of 72

, Releases from the turbine building are considered ground-level releases to determine the dispersion of the airborne effluents. The ground-level JFD is derived from windspeeds and directions measured 10 meters above ground and from the vertical temperature difference between 10 and 46 meters.

Releases from the radwaste and reactor buildings are considered split-level releases to determine the dispersion of the airborne effluents. This means that portions of the release are treated as elevated while other portions are considered ground-level depending on the ratio of the vertical exit velocity to the horizontal wind speed. The split-level dispersion approach is implemented using a model that requires two complete quarterly JFDs for each effluent vent, one for the elevated releases and one for the ground-level releases. The ground-level portion of the split-level JFD is based on wind speeds and directions measured 10 meters above ground-level and from the ve'rtical temperature difference between 10 and 46 meters. The elevated portion of the split-level JFD is based on wind speeds and direction measurements at the 46-meter level and the vertical temperature difference between 46 and 91 meters.

Releases from the stack are considered elevated-level releases to determine the dispersion of the airborne effluents. The JFDs for elevated releases are based on wind .directions and wind speeds measured at 91 meters and the vertical temperature difference between 46 and 91 meters.

The generally open terrain around BFN is not believed to cause any significant effects on the transport and dispersion of gaseous effluents from the plant, Within 30 kilometers of BFN, the terrain is mostly gently rolling hills (30-60 meters). Between 30 and 80 kilometers the hills become larger to the north and south, and mountainous to the east and northeast. The Tennessee River/Wheeler Lake may have a minor effect on transport and dispersion in the immediate vicinity of BFN during periods of winds with a.southerly component, overcast skies, and relatively high wind speeds. Then, the lower layer (10-46 meters) stability class tends to be more stable than would be expected.

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

BFN Rad Impact July-Dec 1991 Page 6 of 72 External Ex osure Dose Airborne Effluents Dose estimates for maximum external air exposures (gamma-air and beta-air doses) are made for points at and beyond the site boundary. The reported dose is chosen for the offsite location with the highest calculated exposure during the quarter. The doses calculated for Browns Ferry Nuclear Plant for each quarter are shown below.

Individual Doses from Airborne Effluents External Air Exposures (mrad)

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

0 BFN Rad Impact July-Dec 1991 Page 7 of 72 Submersion Dose Airborne Effluents External doses to the skin and total body, due to submersion in a cloud of noble gases, are estimated for the nearest residence in each sector. The highest of these exposures is chosen and is assumed to be the maximum individual dose. The submersion doses calculated for Browns Ferry Nuclear Plant for each quarter are shown below.

Individual Doses from Airborne Effluents Submersion Exposures (mrem)

Dose Location Third uarter 1 1 Total Body 8.1E-03 mrem NNW at 1524 meters Skin 1.8E-02 mrem NNW at 1524 meters Fourth uarter 1 Total Body 9.6E-04 mrem HW at 3658 meters Skin 1.4E-03 mrem NW at 3658 meters

BFN Rad Impact t

July-Dec 1991 Page 8 of 72 Or an Dose Airborne Effluents Internal doses to organs due to releases of airborne effluents are estimated for the inhalation, ground contamination, and ingestion pathways. The ingestion pathway is further divided into four possible contributing pathways:

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

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

To determine the maximum organ dose, the dose contribution from the three pathways are summed for each receptor. For the ingestion dose, however, only those pathways that exist for each receptor are considered in the sum, i.e.,

milk ingestion doses are included only for locations where milk is consumed without commercial preparation and vegetable ingestion is included only for those locations where a garden is identified. To conservatively account for beef ingestion, a beef ingestion dose equal to that for the highest site boundary location is added to each identified receptor. For ground contamination, the dose added to the organ dose being calculated is the total body dose calculated for that location, i.e., it is assumed that the dose to an individual organ is equal to the total body dose. The organ doses calculated for Browns Ferry Nuclear Plant for each quarter are shown below.

Individual Doses from Airborne Effluents Maximum Organ (mrem)

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

Vegetable Ingestion 1 1.2E-01 Beef Ingestion 4.0E-03 Inhalation 3.6E-04 Ground Contamination 1 1.5E-02 Milk Ingestion N/A Fourth uarter 1 1 Thyroid Child 1.2E-02 mrem Individual Pathway Contributions:

Vegetable Ingestion 5.5E-03 Beef Ingestion 2.9E-05 Inhalation3 5.9E-03 Ground Contamination 3 7.5E-04 Milk Ingestion N/A 1 Maximum real receptor is located at 1791 meters in the NNW sector.

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

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

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

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

Doses from Airborne Effluents Second Half 1991 Browns Ferry Nuclear Plant Quarterly Percent of Dose Pathway Quarter Dose Limit* Limit Airborne-Gamma air Dose 3 9.4E-03 mrad 5 mrad < 1 %

4 1.0E-03 mrad 1 %

Airborne-Beta air Dose 3 1.7E-02 mrad 10 mrad 1 %

4 4.5E-04 mrad 1 %

Airborne-Max Organ Dose 3 1.4E-Ol mrem 7.5 mrem 1.9  %

4 1.2E-02 mrem 1 %

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

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

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

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

BFN Rad Impact July-Dec 1991 Page 10 of 72 DOSES FROM LI UID EFFLUENTS For liquid effluents, the public can be exposed to radiation from three sources:

the ingestion of water from the Tennessee River, the ingestion of fish caught in the Tennessee River, and direct exposure from radioactive material deposited in the river sediment (recreation).

The concentrations of radioactivity in the Tennessee River are estimated by a computer model which uses measured hydraulic data downstream of Browns Ferry. Parameters used to determine the doses are based on guidance given by the NRC (in Regulatory Guides 1.109) for maximum ingestion rates, exposure times, etc. Wherever possible, parameters used in the dose calculation are site specific use factors determined by TVA. The models that are used to estimate doses, as well as the parameters input to the models, are described

~

in the Browns Ferry Nuclear Plant Offsite Dose Calculation Manual.

Li uid Release Points and River Data 0 Radioactivity concentrations in the Tennessee River are calculated assuming that releases in liquid effluents are continuous. All routine liquid releases from Browns Ferry, located at Tennessee River Mile 294, are made through diffusers which extend into the Tennessee River. It is assumed that releases to the river through these diffusers will initially be entrained in one-fifth of the water which flows past the plant. The QWATA code makes the assumption that this mixing condition holds true until the water is completely mixed at the first downstream dam, at Tennessee River Mile 283.0. The average river flows past the plant site were 34,926 ft /s for the third quarter of 1991 and 59,007 ft /s for the fourth quarter.

Dose Estimates Li uid Effluents Doses are calculated for recreation, consumption of fish, and drinking water for locations between the plant site and the mouth of the Tennessee River. The maximum potential recreation dose is calculated for a location immediately downstream from the plant outfall. The maximum individual dose from ingestion of fish is assumed to be that calculated for the consumption of fish caught anywhere between the plant and the first downstream dam (Wheeler Dam). The maximum individual dose from drinking water is assumed, to be that calculated at the nearest downstream public water supply

BFN Rad Impact July-Dec 1991 Page ll of 72 (Champion Paper Company). This could be interpreted as indicating that the maximum individual, as assumed for liquid releases from Browns Ferry, is an individual who obtains all of his drinking water at the Champion Paper Company, consumes 21 kg (6.9 kg for a child) per year of fish caught from the Tennessee River between BFN and Wheeler Dam, and spends 500 hours0.00579 days <br />0.139 hours <br />8.267196e-4 weeks <br />1.9025e-4 months <br /> per year standing on the shoreline just below the outfall from Browns Ferry. Dose estimates for the maximum individual due to liquid effluents for each quarter in the period are presented below.

Individual Doses from Liquid Effluents (mrem)

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

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

Water Ingestion 2.9E-04 Fish Ingestion '.1E-02 Recreation 3.4E-03 Fourth uarter 1 1 Total Body Adult 1.3E-02 mrem Individual Pathway Contributions:

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

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

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

Doses from Liquid Effluents Second Half 1991 Browns Ferry Nuclear Plant Percent of Quarterly Quarterly Dose Pathway Quarter Dose Limit* Limit Liquid-Total Body Dose 3 4.3E-02 mrem 1.5 mrem 2.9  %

4 1.3E-02 mrem < 1  %

Liquid-Max Organ Dose 3 6.5E-02 mrem 5 mrem 1.3  %

4 . 1.9E-02 mrem < 1  %

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

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

BFN Rad Impact July-Dec 1991 Page 13 of 72 P OPULATION DOSES Population doses for highest exposed organ due to airborne effluents are calculated for an estimated 627,000 persons living within a 50-mile radius of the plant site. Ingestion population doses are calculated assuming that each individual consumes milk, vegetables, and meat produced with the sector annulus in which he resides. Doses from'xternal pathways and inhalation are based on the 50-mile human population distribution.

Population doses for total body and the maximum exposed organ due to liquid effluents are calculated for the entire downstream Tennessee River Population. Water ingestion population doses are calculated using actual population figures for downstream public water supplies. Fish ingestion population doses are calculated assuming that all sport fish caught in the Tennessee River are consumed by the Tennessee River population. Recreation population doses are calculated using actual recreational data on the number of shoreline visits at downstream 'locations.

Population dose estimates for airborne and liquid effluents are presented below.

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

Third Quarter 1991 Liquid 3.8E-Ol man-rem 5.8E-01 man-rem (liver)

Airborne 1.6E-01 man-rem 2.2E-01 man-rem (bone)

Fourth Quarter 1991 Liquid 1.0E-01 man-rem 1.6E-Ol man-rem (liver)

Airborne 2.9E-02 man-rem 5.2E-02 man-rem (thyroid)

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

BFN Rad Impact July-Dec 1991 Page 14 of 72 DIRECT RADIATION External gamma r adiat'ion levels were measured by thermoluminescent dosimeters (TLDs) deployed around BFN.. The quarterly gamma radiation levels determined from these TLDs during this reporting period averaged approximately 15.8 mR/quarter at onsite stations and approximately 14.2 mR/quarter at offsite stations, or approximately 1.6 mR/quarter higher onsite than at offsite stations. This is consistent with levels reported at TVA's nonoperating nuclear power plant construction sites where the average radiation levels onsite are generally 2-6 mR/quarter higher than the levels offsite. This may be attributable to natural variations in environmental radiation levels, earth moving activities onsite, the mass of concrete employed in the construction of the plants, or other undetermined influences. Fluctuations in natural background dose rates and in'TLD readings tend to mask any small increments which may be due to plant operations. Thus, there was no identifiable increase in dose rate levels attributable to direct radiation from plant equipment and/or gaseous effluents.

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

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

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

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

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

BFN Rad Impact July-Dec 1991 Page 15 of 72 The annual thyroid dose to the maximum individual is conservatively estimated by summing the following doses:

the total body air submersion dose for each quarter, the thyroid dose from airborne effluents for each quarter, the total body dose from liquid effluents for each quarter, the thyroid dose from liquid effluents for each quarter, and any identifiable increase in direct radiation dose levels as measured by the environmental monitoring program.

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

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

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

(except thyroid)

Total body air submersion dose 2.2E-04 8.1E-03 9.6E-04 Maximum organ dose (airborne) 1.9E-03 1.4E-01 1.2E-02 Total body dose (liquid) 1.8E-02 4.3E-02 1.3E-02 Maximum organ dose (liquid) 2.6E-02 6.5E-02 1.9E-02 Direct radiation dose O.OE-OO 0.0E-OO O.OE-OO Total 1.5E-02 4.6E-02 2.6E-01 4 'E-02 Cumulative Total Dose (Total Body or other organ) mrem 3.7E-01 Total body air submersion dose O.OE-OO 2.2E-04 8.1E-03 9.6E-04 Thyroid dose (airborne) 6.1E-04 2.3E-04 3.4E-02 1.2E-02 Total body dose (liquid) 5.5E-03 1.8E-02 4.3E-02 1.3E-02 Thyroid dose (liquid) 4.4E-04 1.7E-03 3.4E-03 3.0E-03 Direct radiation dose O.OE-OO O.OE-OO O.OE-OO O.OE-OO Total (Thyroid) 6.6E-03 2.0E-02 8.9E-02 2.9E-02 Cumulative Total Dose (Thyroid) mrem 1.5E-01

BFN Rad Impact July-Dec 1991 Page 16 of 72 CONCLUSIO As a result of operation of Browns Ferry Nuclear Plant for the second half of 1991, radioactive effluents were released to the atmosphere and the Tennessee River. The released radioactivity, resulted in estimated potential doses to the public which are well below the Technical Specification Limits and Regulatory Guidance. Cumulative doses for the calendar year are given below along with a comparison to the respective annual limits for the doses.

Cumulative Doses from Effluents Calendar Year 1991 Browns Ferry Nuclear Plant Percent of Annual Dose Pathway Limit Airborne-Gamma air Dose 1.1E-02 mrad 10 mrad 1 %

Airborne-Beta air Dose 1.8E-02 mrad 20 mradl 1%

Airborne-Max Organ Dose 1.6E-Ol mrem 15 mreml 1.1  %

Liquid-Total Body Dose 8.0E-02 mrem 3 mrem 2.7  %

Liquid-Max Organ Dose 1.2E-Ol mrem 10 mrem2 1.2  %

Total Dose Thyroid 1.5E-Ol mrem 75 mrem < 1 %

Total Dose Total Body or Organ other than Thyroid 3.7E-01 mrem 25 mrem 1.5  %

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

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

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

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

ATTACHMENT 1 BROWNS FERRY NUCLEAR PLANT SECOND HALF 1991 METEOROLOGICAL DATA

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

BROWNS FERRY NUCLEAR PLANT JUL 1 I 91 SEP 30 i 91 WIND 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 0.0 0.0 0.0 0.0 0.186 0.743 0.093 0.0 0.0 1.021 NNE 0.0 0.0 0.0 0.0 0.279 1.068 0.093 0.0 0.0 1.439 NE 0.0 0.0 0.0 0.046 0.093 0. 186 0.046 0.0 0.0 0.371 ENE 0.0 0.0 0.0 0.0 0.046 a.o 0.0 0.0 0.0 0.046 E 0.0 0.0 0.0 0.0 o.a46 0.0 0.0 0.0 0.0 0.046 ESE 0.0 0.0 0.0 0.464 0.232 0.0 0.0 0.0 0.0 0.696 SE 0.0 0.0 0.464 1.300 0.279 0.0 0.0 0.0 0.0 2.043 SSE 0.0 Q.Q 1.300 0.975 0.046 0.0 0.0 0.0 0.0 2. 321 S 0.0 Q.Q 1.300 0.557 0.0 0.0 0.0 0.0 0.0 1.857 SSW 0.0 o.a 0.371 0.557 0.0 0.0 0.0 0.0 0.0 0.929 SW 0.0 0.0 0.232 0.929 0.0 0.0 0.0 0.0 0.0 1.161 WSW a.a 0.0 0.046 0.743 0. 139 0.0 0.0 0.0 0.0 0. 929 W 0.0 0.0 0.0 0. 511 0.139 0.0 0.0 0.0 0.0 0.650 WNW 0.0 0.0 0.0 0.279 0.279 0.325 0.0 0.0 0.0 0.882 NW 0.0 0.0 0.0 0.232 0.650 0.882 0.0 0.0 Q.a 1.764 NNW 0.0 0.0 0.0 0.046 0.093 0.464 0.0 Q.Q 0.0 0.604 SUBTOTAL 0.0 0.0 3.714 6.639 2.507 3.668 0.232 0.0 0.0 16.759, TOTAL HOURS OF VALZD STABILITY OBSERVATIONS 2199 TOTAL HOURS OF STABILITY CLASS A 362 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS A 361 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2154 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY- MET FACILITY LOCATED 1-3 KM ESE OF BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON LAPSE RATE MEASURED BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT THE 10.42 METER LEVEL DATE PRINTED: 10/'28/91 MEAN WIND SPEED ~ 5.6 MPH Q

OP I fD M I

NOTE: TOTALS AND SUBTOTALS ABOVE ARE OBTAINED FROM UNROUNDED NUMBERS w (D C4 O

0 H

% r 9 M 'O M%A 0

JOINT PERCENTAGE FREQUENCIES STABILITY CLASS B (-1. 9 <

D SPEED BY WIND DIRECTION POR DELTA-T<MM-I. 7 C/100 M) 0 BROWNS PERRY NVCLEAR PLANT JUL 1M 91 SEP 30M 91 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 0.0 0.0 0.0 0. 139 0.186 0.093 0.0 0.0 0.0 0.418 NNE 0.0 O.Q o.a 0.139 0.325 0.046 0.0 0.0 0.0 0.511 NE 0.0 0.0 0.0 0.139 0.139 0.139 0.0 0.0 0.0 0.418 ENE 0.0 0.0 0.046 0.046 0.0 ,0. 0 0.0 0.0 0.0 Q.093 E 0~0 0.0 0.046 0.046 0.093 0.0 0.0 0.0 0.0 0.186 ESE Q.o 0.0 0.093 0.046 0.0 0.0 0.0 0.0 0.0 0. 139 SE 0.0 0.0 0.279 0.0 0.046 0.0 0.0 0.0 0.0 0.325 SSE 0.0 0.0 0.929 0.046 0.0 0.0 0.0 0.0 Q.O 0.975 S 0.0 0.0 0.464 0.046 0.0 0.0 0.0 0.0 0.0 0.511 SSW 0.0 0.0 0.418 0.046 0.0 0.0 0.0 0.0 0.0 0.464 SW 0.0 0.0 "'Q.093 0.093 0.0 0.0 0.0 0.0 0.0 0.186 WSW 0.0 0.0 0.186 0.650 0.0 0.0 0.0 o.a 0.0 0.836 W 0.0 0.0 0.139 0.232 0.325 0.0 0.0 0.0 0.0 0.696 WNW 0.0 0.0 0.0 0.325 0.325 0.093 0.0 0.0 0.0 0.743 NW O.Q a.a 0.0 0.279 0.557 0.232 0.0 0.0 0.0 1.068 NNW 0.0 0.0 0.0 0.093 0.046 0.139 0.0 0.0 0.0 0.279 SUBTOTAL 0.0 0.0 2.693 2.368 2.043 0.743 0.0 0.0 0.0 7.846 TOTAL HOURS OF VAZID STABILITY OBSERVATIONS 2199 TOTAL HOVRS OP STABILITY CLASS B 170 TOTAL HOURS OF VALZD WIND DIRECTION-WIND SPEED-STABILITY CLASS B 169 TOTAL HOURS OF VALID WZND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2154 TOTAL HOURS CALM 0 METEOROLOGICAL PACZLITY: MET PACILITY LOCATED 1.3 KM ESE OF BROWNS PERRY NUCLEAR PZANT STABILITY BASED ON LAPSE RATE MEASURED BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT THE 10.42 METER IEVEL DATE PRINTED 1Q/28/91 MEAN WIND SPEED ~ 4.8 MPH C

00 Q 'LC,'

PS NOTE: TOTAZS AND SVBTOTALS ABOVE ARE OBTAZNED FROM UNROUNDED NUMBERS ~ U Q CO fb O O

tht~ 'dH 0

g h)r 0,

JOINT PERCENTAGE FREQUENCIES STABILITY CLASS C (-l. 7<

D SPEED BY WIND DIRECTION FOR DELTA-T<~-1 5 C/100 M) 0 BROWNS FERRY.NUCLEAR PLANT JUL 1, 91 SEP 30, 91 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.i TOTAL N 0.0 0.0 0.0 0.0 0.0 0.139 0.046 0.0 0.0 0.186 NNE 0.0 a.a 0.093 0.093 0.139 0.093 a.o 0.0 0.0 0.418 NE 0.0 0.0 0.046 0. 139 0.046 0.046 0.0 0.0 0.0 0.279 ENE 0.0 0.0 0.093 0.139 0.0 0.046 0.0 0.0 a.o 0.279 E 0.0 0.0 0.0 0.046 0.0 0.0 0.0 0.0 0.0 0.046 ESE 0.0 0.0 0.139 0.232 0.046 0.0 0.0 0.0 0.0 0.418 SE 0.0 0.0 0.232 0.093 0.0 0.0 0.0 0.0 0.0 0.325 SSE 0.0 0.0 0.464 0.0 0.0 0.0 0.0 0.0 0.0 0.464 S 0.0 0.0 0.511 0.0 0.0 0.0 0.0 0.0 0.0 0.511 SSW 0 ' 0.0 0.139 0.0 0.0 0.0 0.0 0.0 0.0 0.139 SW 0.0 0.0 0.139 0.046 0.0 a.o 0.0 0.0 0.0 0.186 WSW 0.0 0.0 0.371 0.046 0.093 0.0 0.0 0.0 0.0 0. 511 W 0.0 0.0 0.046 0.557 0.093 0.0 0.0 0.0 0.0 0.696 WNW 0.0 0.0 0.0 0. 418 0.464 0.093 0.0 '0.0 0.0 0.975 NW 0.0 0.0 0.0 0.464 0.325 0.232 0.0 0.0 0.0 1.021 NNW 0.0 0.0 0.0 0.093 0.0 0.0 0.046 0.0 0.0 0.139 SUBTOTAL 0 0 0.0 2.275 2.368 1.207 0. 650 0.093 0.0 0.0 6.592 TOTAL HOURS OF VALID STABZZITY OBSERVATIONS 2199 TOTAL HOURS OF STABILITY CLASS C 143 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS C 142 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2154 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: MET FACILZTY ZOCATED 1.3 KM ESE OF BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON LAPSE RATE MEASURED BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTZON MEASURED AT THE 10 42 METER LEVEL DATE PRINTED ~ 10/28/91 MEAN WIND SPEED ~ 4.7 MPH W W OS C

00 6 'C NOTE: TOTALS AND SUBTOTALS ABOVE ARE OBTAINED FROM UNROUNDED NUMBERS I

~ ID O

CL 0 M th ~ g h) wO

JOINT PERCENTAGE FREQUENCIES D SPEED BY WIND DIRECTION POR STABILZTY CLASS D (-1.5< DELTA-T<~-0.5 C/100 M)

BROWNS PERRY NUCLEAR PLANT JUL 1, 91 SEP 30, 91 WIND 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 0.006 0.0 0.279 0.325 0.232, 0.975 0.093 0.0 0.0 1.910 NNE 0. 015 0.0 0.650 0. 371 0.418 0.325 0.0 0.0 0.0 1.779 NE 0.007 0.046 0.279 0.279 0. 418 0.046 0.046 0.0 0.0 1.122 ENE 0.012 0.093 0.418 0.464 0.093 0.046 0.0 0.0 0.0 1.126 E 0.008 0.093 0.279 0.279 0.046 0.046 0.0 0.0 0.0 0.751 ESE 0.015 0.046 0.604 0.325 0.604 0.046 0.0 0.0 0.0 1;640 SE 0.017 0.093 0.650 0.557 0.604 0.0 0.0 0.0 0.0 1.920 SSE 0.026 0.232 0.929 0.093 0.0 0.0 0.0 0.0 0.0 1.280 S 0.033 0.186 1.253 0.093 0.0 0.0 0.0 0.0 0.0 1.565 SSW 0.055 0.557 1. 857 0.186 0.0 0.0 0.0 0.0 0.0 2.655 SW 0.025 0.325 0.789 0.139 0.0 0.0 0.0 0.0 0.0 1.279 WSW 0.025 0.186 0.929 0. 557 0.279 0.0 O.D 0.0 0.0 1.975

~W 0.020 0.046 0.836 1.161 0.511 0.139 0.0 0.0 0.0 2.713 WNW 0.005 Q.Q93 0.139 0.882 0.557 0.046 0.0 0.0 D.O 1.723 NW 0.004 0.0 0.186 0.139 0.279 0.046 0.0 0.0 0.0 0.654 NNW 0.004 0.0 Q.186 0.418 0.186 0.186 0.093 0.0 0.0 1.072 SUBTOTAL 0.279 1.996 10.260 6.267 4.225 1.903 0.232 0.0 0.0 25.162 TOTAL HOURS OF VALID STABILITY OBSERVATZONS 2199 TOTAL HOURS OF STABILITY CIASS D 547 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS D 542 TOTAL HOURS OP VALZD WZND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2154 TOTAL HOURS CALM 6 METEOROLOGICAL PACILZTY: MET PACILITY LOCATED 1.3 KM ESE OF BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON LAPSE RATE MEASURED BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT THE 10.42 METER LEVEL DATE PRINTED: 10/28/91 MEAN WIND SPEED ~ 4.1 MPH 00 tb M NOTE'OTALS AND SUBTOTALS ABOVE ARE OBTAINED PROM UNROUNDED NUMBERS hD I

H Ql O 8 0 0

0 M g

weQ MM 0

JOINT PERCENTAGE FREQUENCIES ND SPEED BY WZND DIRECTION FOR STABILITY CLASS E (-0.5< DELTA-T<~ 1.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT JUL 1, 91 - SEP 30, 91 WIND 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 0.092 0.279 0.975 0.975 0.232 0.232 0.0 0.0 0.0 2.784 NNE 0.075 0.279 0.743 Q.789 0.371 0.0 0.0 0.0 0.0 2.257 NE 0.054 0.232 0.511 0.371 Q.325 0.046 0.0 0.0, 0.0 1. 540 ENE 0.078 0.325 0.743 0.696 0.093 0.0 0.0 0.0 0.0 1.935 E 0.088 0.186 1.021 0.929 0.186 0.046 Q.a 0.0 0.0 2. 456 ESE 0.102 0.325 1. 068 0.789 0.0 0.0 0.0 Q.a 0.0 2.284 SE 0.082 0.511 0.604 0.371 0.046 0.0 0.0 0.0 Q.a 1.614 SSE 0.075 0.418 0.604 0.0 0.0 0.0 0.0 0.0 O.Q 1.096 S 0.075 0.371 0.650 0.0 0.0 0.0 0.0 0.0 0.0 1.096 SSW 0.051 0.371 0.325 0.0 0.0 0.0 0.0 0.0 0.0 0.747 SW 0.061 0.511 0.325 0.0 0.0 0.0 0.0 0.0 0.0 0.

WSW 0.071 0.186 0.789 0.232 0.046 0.0 0.0 0.0 0.0 897'.325 W Q.054 0.093 0.650 0. 511 0.046 0.0 0.0 0.0 0.0 1.354 WNW 0.037 Q.139 0.371 0.186 0.093 0.0 0.0 0.0 0.0 0.827-NW 0.014 0.093 Q.093 a.a 0.093 0.0 0.0 0.0'.0 0.0 0.292 NNW 0.058 0.093 0.696 0.279 0.186 0.279 0.0 0.0 1.590 SUBTOTAL 1.068 4.410 10.167 6.128 1.718 0.6Q4 0.0 0.0 0.0 24.095 TOTAL HOURS OF VALID STABILITY OBSERVATZONS 2199 TOTAL HOURS OF STABILITY CLASS E 538 TOTAL HOURS'F VALID WIND DIRECTION WIND SPEED STABILITY CLASS E 519 TOTAL HOURS OP VALID WIND DIRECTION-WIND SPEED-STABZLITY OBSERVATZONS 2154 TOTAL HOURS CALM 23 METEOROLOGICAL FACILITY: MET PACZLZTY LOCATED 1 3 KM ESE OP BROWNS PERRY NUCLEAR PLANT STABILITY BASED ON LAPSE RATE MEASURED BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT THE 10.42 METER LEVEL DATE PRINTED: 10/28/91 MEAN WIND SPEED = 3.0 MPH, C4WC QQ (D N I

NOTE: TOTALS AND SUBTOTALS ABOVE ARE OBTAINED PROM UNROUNDED NUMBERS to Cl 0) r lD C A

0

~g M 'U M~O

JOINT PERCENTAGE FREQUENCIES ND SPEED BY WIND DIRECTION FOR STABILITY CLASS F ( 1. 5 < DELTA-T< 4. 0 C/100 M)

BROWNS FERRY NUCLEAR PLANT JUL 1, 91 SEP 30, 91 WIND 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 12.5-18.4'8.5-24.4 >~24.5 ,TOTAL N 0.328 0.325 1.207 Q.41& 0.186 0.0 0.0 0.0 0.0 2.463 NNE 0.238 0.279 0.836 0.696 0.0 0.0 0.0 0.0 0.0 2.049 NE 0.179 0.279 0.557 0.139 0.046 0.0 0.0 0.0 0.0 1. 200 ENE 0. 218 0.232 0.789 0.279 0-;0 O.Q 0.0 0.0 = 0.0 1. 518 E 0.308 0.325 1. 114 0.325 0.0 0.0 0.0 0.0 0.0 2.072 ESE 0.119 0.279 0.279 0.046 0.0 0.0 O.Q 0.0 0.0 0.723 SE 0.050 0.232 0.0 0.0 0.0 0.0 O.Q 0.0 0.0 0.282 SSE 0.020 0.093 0.0 0.0 0.0 0.0 0.0 Q.O. 0.0 0.113 S 0.030 0.093 0.046 0.0 0.0 0.0 0.0 0.0 '.0

0. ).69 SSW 0.020 0.093 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.113 SW 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 WSW 0.030 0.139 0.0 0.0 0.046 0.0 0.0 0.0 0.0 0.-215 W 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 WNW 0.010 0.046 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.056 NW 0.020 0.046 0.046 0.0 0.0 0.0 0.0 0.0 0.0 0.113 NNW 0.149 0.232 0.464 0.325 0.093 0.0 0 ' 0.0 0.0 1.263 SUBTOTAL 1. 71.8 2.693 5.339 2.228 0.371 0.0 0.0 0.0 0.0 12.349 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2199 TOTAL HOURS OP STABILITY CLASS F 280 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS F 266 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2154 TOTAL HOURS CALM 37 METEOROLOGICAL PACILITY: MET FACILITY LOCATED 1 ~ 3 KM ESE OP BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON LAPSE RATE MEASURED BETWEEN 10. 03 AND 45. 30 METERS WIND SPEED AND DIRECTION MEASURED AT THE 10-42 METER LEVEZ DATE PRINTED: 10/28/91 MEAN WIND SPEED ~ 2.3 MPH 00 tD I

NOTE: TOTALS AND, SVBTOTALS ABOVE ARE OBTAINED PROM UNROUNDED NUMBERS et Q

A 0 H W r g M 'd V '%

h) w 0

JOINT PERCENTAGE FREQUENCIES D SPEED BY WIND DIRECTION FOR STABILITY CLASS G (DELTA T > 4.0 C/100 M)

BROWNS FERRY NUCLEAR PLANT JUL 1,. 91 SEP 30, 91 WIND 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 0.462 0.696 1.068 0.186 0.0 0.0 0.0 0.0 0.0 2.412 NNE 0.328 0.511 0.743 0.232 0.046 0.0 0.0 0.0 0.0 ~

1.860 NE 0.097 0.186 0.186 0.046 0.0 0.046 0.0 0.0 0.0 0.561 ENE 0.255 0.325 0.650 0.139 0.0 0.0 0.0 0.0 0.0 1.369 E 0.036 0.046 0.093 0.186 0.0 0.0 0.0 0.0 0.0 0.361 ESE 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 SE 0.0 0.0 0.0 0.046 0.0 0.0 0.0 0.0 0.0 0.046 SSE 0.024 0.093 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 ' 0.0 0.0 0.117 S 0 0.0 0.0 0.0 - 0.0 0.0 0.0 SSW 0. 012 0.0 0.046 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.059 SW 0.0 0.0 0.0 0.0 0.0 0.0 0.0 WSW 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 W 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 WNW 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 NW 0.012 0.046 0.0 0.0 0.0 0.0 0.0 0.0 0.0 NNW 0.073 0.186 0.093 0.0 0.0 0.059 0.0 0.0 0.0 0.0 0.351 SUBTOTAL 1.300 2.089 2.878 0 '36 0.046 0.046 0.0 0.0 0.0 7.196 TOTAL HOURS OF VALZD STABILITY OBSERVATIONS

  • 2199 TOTAL HOURS OF STABILITY CLASS G 159 TOTAL HOURS OF VAI ID WIND DZRECTZON-WIND SPEED-STABILITY CLASS G 155 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2154 TOTAL HOURS CALM 28 METEOROLOGICAL FACZLITY: MET FACILITY LOCATED 1.3 KM ESE OF BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON LAPSE RATE MEASURED BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT THE 10.42 METER LEVEL DATE PRINTED: 10/28/91 MEAN WIND SPEED ~ 1. 9 MPH M W OS C

OQ i NOTE: TOTALS AND SUBTOTALS ABOVE ARE OBTAINED FROM UNROUNDED NUMBERS 0 Y I

M(D 0 O

O H Hl w '0g V>

Nw0

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

BROWNS FERRY NUCLEAR PLANT PART 1 OF 2 GROUND LEVEL RELEASE MODE JUL 1< 91 - SEP 30, 91 WIND 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 ' 18.5-24.4 24.5 TOTAL N 0.0 0.0 0.0 0.0 0.018 0. 119 0.018 0.0 0.0 0.155 NNE 0.0 0.0 0.0 0.0 0.025 0.168 0.018 0.0 0.0 0.211 NE 0.0 0.0 0.0 0.002 0.009 0.029 0.009 0.0 0.0 0.049 ENE 0.0 0.0 0.0 0.0 o.oo4 0.0 0.0 0.0 0.0 0.004 E 0.0 0.0 0.0 0.0 0.006 0.0 0.0 0.0 Q.Q 0.006 ESE 0.0 0.0 0.0 0.017 0.032 0.0 0.0 0.0 a.o 0.049 SE a.o 0.0 0.009 0.042 0.042 0.0 0.0 0.0 0.0 0.092 SSE 0.0 0.0 0.017 0.013 0.004 0.0 0;0 0.0 0.0 0.035 S 0.0 0.0 0.012 0.022 0.0 a.o 0.0 0.0 0.0 0.034 SSW 0.0 0.0 0.002 0.012 0.0 0.0 0.0 0.0 0.0 0.014 SW 0.0 0.0 0.0 0.012 0.0 0.0 0.0 0.0 0.0 0.012 WSW 0.0 0.0 a.o 0.011 0.009 0.0 0.0 0.0 0.0 0.021 W 0.0 0.0 0.0 0.005 0.007 0.0 0.0 0.0 0.0 0.013 WNW 0.0 0.0 0.0 0.004 0.020 0.046 0.0 0.0 0.0 0. 0'70 NW a.o 0.0 0.0 0.002 0.049 0. 113 0.0 Q.a 0.0 0.164 NNW 0.0 0.0 0.0 0.0 0.008 0.079 a.a 0.0 0.0 0.087 SUBTOTAI 0.0 -0.0 0.041 0.141 0.235 0.554 0.045 0.0 0.0 1.016 TOTAL .HOURS OF VALID OBSERVATIONS 2136.000 TOTAL HOURS OF GROUND LEVEL RELEASE 110.550 TOTAL HOURS OF STABILITY CLASS A 22.670 TOTAL HOURS OF GROUND LEVEL STABII.ZTY CLASS A 21.700 METEOROLOGICAL FACZLITY: MET FACILITY LOCATED 1 '3 KM ESE OF BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND DIRECTION MEASURED AT 10.42 METER IEVEL WIND SPEED MEASURED AT 10.42 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S <U W Cd C

DATE PRINTED 10/28/91 00 W 'R 03 Y I

M lb C NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS O 0 H 3O '0g M 3O 83 fO ~ 0

,I

I SPLIT JOINT PERCENTAGE PREOUE F WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS B ( 1 9( DELTA T(= 1 7 C/100 M3 BROWNS FERRY NVCLEAR PLANT PART 1 OF 2 GROUND LEVEL RELEASE MODE JUL 1 6 91 SEP 30 6 91 WIND WIND SPEED'(MPH3 DIRECTION 6.6-1.6 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 0.0 0.0 0.0 0.0 0.013 0.016 0.0 0.0 0.0 0.029 NNE 0.0 0.0 0.0 0.002 0.028 0.009 0.0 0.0 0.0 0.039 NE 0.0 0.0 0.0 0.000 0.010 0.023 0.0 0.0 0.0 0.033 ENE 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 E 0.0 0.0 0 ' 0.001 0.011 0.0 0.0 0.0 0.0 0.012 ESE 0 ' 0.0 0.0 0.005 0.0 0.0 0,.0 0.0 0.0 0.005 SE 0.0 0.0 0.0 0.0 0.008 0.0 0.0 0.0 0.0 0.008 SSE 0.0 0.0 0.0 O.Q07 0.0 0.0 0.0 0.0 0.0 0.007 S 0.0 0.0 0.010 0.0 0.0 0.0 0.0 0.0 0.0 0.010 SSW 0.0 0.0 0.0 O.Q 0.0 0.0 0.0 0.0 0.0 0.0 SW 0.0 0.0 O.Q Q.O 0.0 0.0 0.0 0.0 0 ~ 0 0.0 WSW 0.0 0.0 0'. 0 0.014 0.0 0.0 0.0 0.0 0.0 0.014 W 0.0 0.0 0.0 0.0 0.017 0.0 0.0 0.0 0.0 0 '17 WNW 0.0 0.0 O.Q 0.002 0.017 0. 015 0.0 0.0 0.0 0.034 NW 0.0 , 0.0 0.0 0.002 0.042 0.026 . 0.0 0.0 0.0 0.069 NNW 0 ' 0.0 0.0 0.0 0.003 0.021 0.0 0.0 0.0 0-024 SUBTOTAL 0.0 0.0 0.010 0.034 0.148 0.110 0.0 0.0 0.0 0.302 TOTAL HOURS OP VALID OBSERVATIONS 2136.000 TOTAL HOURS OP GROVND LEVEL RELEASE 110.550 TOTAL HOURS OF STABILITY CLASS B 12.280 TOTAL HOURS OP GROUND LEVEL STABILITY CLASS B 6.450 METEOROLOGICAL PACZLITY MET FACILITY LOCATED 1 3 KM ESE OF BROWNS FERRY NUCLE R STABILITY BASED ON DELTA-T BETWEEN 10 '3 AND 45.30 METERS WIND DIRECTION MEASURED AT 10.42 METER LEVEL WIND SPEED MEASURED AT 10.42 METER LEVEL EPFLUENT VELOCITY = 12 . 60 M/S O 4 bS DATE PRINTED: 10/28/91 00 I

Cl

'LA 06 9 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROVNDED NUMBERS 0 0 M the1O '0g h)t 0

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

BROWNS FERRY NUCLEAR PLANT PART 1 OF 2 GROUND LEVEL RELEASE MODE JUL 1, 91 - SEP 30, 91 WIND WIND SPEED(MPH)

DIRECTION CALM 6.6-6.6 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 0.0 0.0 0.0 0.0 0.0 0.021 0.009 0.0 0.0 0.030 NNE 0.0 0.0 0.0 0.0 0.012 0.014 0.0 0.0 0.0 0.025 NE 0.0 0.0 0.0 0.000 0.003 0.007 0."0 0.0 0.0 0.010 ENE 0.0- 0.0 0.0 0.0 0.0 0.007 0.0 0.0 0.0 0.007 E 0.0 0.0 0.0 0.003 0.0 0.0 0.0 0.0 0.0 O.Q03 ESE 0.0 0.0 0.0 0.008 0.007 0.0 0.0 0.0 0.0 0.015 SE 0.0 0.0 0.0 0.007 0.0 0.0 0.0 0.0 0.0 0.007 SSE 0.0 0.0 0.007 0.0 0.0 0.0 0.0 0.0 0.0 0.007 S 0.0 0.0 0.013 0.0 0.0 0.0 0.0 0.0 0.0 0.013 SSW 0.0 0.0 0.007 0.0 0.0 0.0 0.0 0.0 0.0 0.007 SW 0.0 0.0 0.0 0.007 0.0 0.0 0.0 0.0 0.0 0.007 WSW 0.0 0.0 0.0 0.0 0.009 0.0 0.0 0.0 0.0 0.009 0.0 0.0 0.0 0.007 0.005 0 ' 0.0 0.0 0.0 0.012 WNW 0.0 0.0 0.0 0.003 0.027 0.016 0.0 Q.O 0.0 0.046 NW 0.0 0.0 0.0 0.002 0.026 0.030 0.0 0.0 0.0 0.059 NNW 0.0 0.0 0.0 0.000 0.0 0.0 0.01Q 0.0 0.0 0.010 SUBTOTAL 0.0 0.0 0.027 0.038 0.088 0.096 0.019 0.0 0.0 0.267 TOTAL HOURS OF VALID OBSERVATIONS 2136.000 TOTAL HOURS OF GROUND LEVEL RELEASE 110. 550 TOTAL HOURS OF STABILZTY CLASS C 35.2&0 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS C 5.710 METEOROLOGICAL FACILITY: MET PACZLZTY LOCATED 1.3 KM ESE OF BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND DIRECTION MEASURED AT 10.42 METER LEVEL WIND SPEED MEASURED AT 10.42 METER LEVEL EPPLUENT VELOCITY 12.60 M/S QU4 td C

DATE PRINTED: 10/28/91 QO l 'R lD QQ' MC>Q M(D 0 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED PROM UNROUNDED NUMBERS 0 O M g

QO 'd hJQ 0

SPLIT JOZNT PERCENTAGE PREGUEHC WIND SPEED BY WIND DIRECTION POR STABILITY CLASS D ( 1.5< DELTA T<~ 0.5 C/100 M)

BROWNS PERRY NUCLEAR PLANT PART 1 OF 2 GROUND LEVEL RELEASE MODE JVL 1, 91 SEP 30, 91 WIND 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 '2.5-18-4 18.5-24.4 >~24.5 TOTAL H 0.0 0.0 0.0 0.009 0.031 0.169 0.019 0.0 0.0 0.228 NNE 0.0 0.0 0.0 O.Q18 0.046 0.054 0.0 0.0 0.0 0.118 NE 0.0 0.0 0.001 0.009 0.042 0.007 0.032 0.0 0.0 0.091 ENE 0.0 0.0 0.0 0.011 0.008 0.007 0 ' 0.0 0.0 0.027 E 0.0 a.o 0.0 0.007 0.006 0.007 0.0 0.0 0.0 0.021 ESE 0.0 0.0 0.007 0.015 0.102 0.009 0.0 Q.Q 0.0 0. 132 SE 0.0 0.0 0.030 0.087 0.113 0.0 0.0 0.0 0.0 0.231 SSE 0.0 0.0 0.047 0.0 0.0 0.0 0.0 0.0 0.0 0.047 S 0.0 0.0 0.067 0.007 0.0 a.o 0.0 0.0 o.a 0.074 SSW 0.0 0.004 0.085 0.030 0.0 0.0 0.0 0.0 0.0 0.119 SW 0.0 0.0 0.006 0.008 0.0 0.0 0.0 0.0 0.0 0.015 WSW 0.0 0.002 0.005 0.041 0.038 0.0 0.0 0.0 0.0 0.085 W 0.0 0.0 0.010 0.035 0.053 0.007 0.0 0.0 0.0 0.105 WNW 0.0 0.002 0.0 0.018 0.038 0.008 0.0 0.0 0.0 0.066 NW o.a 0.0 0 ' 0.000 0.022 0.005 0.0 0.0 0.0 0.028 NHW 0.0 0.0 0.0 0. 011 0.011 0.032 0.031 o.a 0.0 0.085 SUBTOTAL 0.0 0.008 0.258 0.308 0.512 0.306 0.082 0.0 0.0 1.474 TOTAL HOURS OP VAZZD OBSERVATIONS 2136.000 TOTAL HOURS OF GROUND LEVEL RELEASE 110. 550 TOTAL HOURS OF STABILITY CLASS D 1107.570 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS D 31.480 METEOROLOGICAL FACILITY: MET FACILITY LOCATED 1.3 KM ESE OF BROWNS FERRY NVCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AHD 45.30 METERS WIND DIRECTION MEASURED AT 10.42 METER LEVEL WIND SPEED HEASURED AT 10.42 METER LEVEL EFFLUEHT VELOCITY I 12.60 M/S DATE PRINTED: 10/28/91 OQ tb M I

VO 9 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROVNDED NUMBERS 0 O M M e 8 M 'O V'Z 0>

A

N ERCEHTAGE RE UEN F WZ D S ED BY WIND DIRE TI N STABILITY CLASS E It 0 5< DELTA T<m 1 ~ 5 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 1 OF 2 GROUND LEVEL RELEASE MODE JVL 15 91 SEP 302 91 WIND 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 2=24.5 TOTAL N 0.001 0.0 0.030 0.122 0.034 0.038 0.0 0.0 Q.a 0.225 NNE 0.000 0.001 0.015 0.094 0.057 0.0 0.0 Q.Q 0.0 0.167 NE 0.000 0.0 0.011 0.031 0.040 0.0 0.0 a.o 0.0 0.082 ENE 0.001 0.0 0.028 0.055 0.013 0.0 0.0 0~0 0.0 0.096 E 0.001 0.0 0.029 0.091 0.013 0.00& 0.0 0.0 0.0 0.141 ESE 0.001 0.001 0.038 0. 103 0.0 0.0 0.0 '.0 0.0 0.143 SE 0.002 0.022 0.054 0.051 0.008 0.0 0.0 0.0 0.0 0.137 SSE 0.001 0.002 0.039 0.0 a.o 0.0 0.0 0.0 0.0 0.042 S 0.001 Q.015 a.049 0.0 0.0 0.0 0.0 0.0 0.0 0.065 SSW 0.000 o.oaa 0.0 0.0 0.0 . 0.0 0.0 0.0 0.0 0.000 SW 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

"'SW 0.000 0.002 0.005 0.015 0.006 0.0 0.0 0.0 0.0 0.028 W 0.000 0.0 0.006 0.021 0.005 0.0 0.0 0.0 a.o 0.032 WNW 0.000 0.0 0.000 0.018 0.012 0.0 0.0 0.0 0.0 0.030 NW 0.000 0.0 0.001 0.0 0.012 0.0, 0.0 0.0 0.0 0.014 NHW 0.000 0.0 0.013 0.026 0.027 0.049 0.0 0.0 0.0 0.115 SUBTOTAL 0.008 0.044 0.318 0.625 0.226 0.096 0.0 0.0 0.0 l. 317 TOTAL HOURS OP VALID OBSERVATIONS 2136.000 TOTAL HOURS OP GROUND LEVEL RELEASE 110.550 TOTAL HOURS OP STABILITY CLASS E 731. 270 TOTAL HOURS OF GROUND LEVEL STABZI ITY CLASS E 28.130 METEOROLOGZCAL FACILITY: MET FACILITY LOCATED 1.3 KM ESE OP BROWNS FERRY NUCLEAR PLANT STABILITY'ASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS 5 WIND DIRECTION MEASVRED AT 10. 42 METER LEVEL WIND SPEED MEASVRED AT 10.42 METER LEVEL EFPLUENT VELOCITY ~ 12.60 M/S 4c DATE PRINTED'0/28/91 00 O M I

Cl fD MS 0 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED PROM UNROUNDED NUMBERS 0 O M 9

M 5 0 rt

SPLIT JOINT PERCENTAGE FRE()UEN F WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS F ( 1 5( DELTA T<m 4.0 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 1 OF 2 GROUND LEVEL RELEASE MODE JUL 1, 91 SEP 30, 91 WIND WIND SPEED(MPH)

DIRECTION CALM 0.6-1.4 1. 3-3 ..3 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. 001 0.0 0.066 Q.Q59 0.032 0.0 0.0 0.0 0.0 0.157 NNE 0.000 0.0 O.Q40 0.096 0.0 0.0 0.0 0.0 0.0 0.136 NE 0.000 O.OQ4 a.o27 0.019 0.008 0.0 0.0 0.0 0.0 0.058 ENE Q.QQQ a.oo4 0.012 0.025 0.0 0.0 0.0 0.0 0.0 0.041 E O.oao 0.009 0.027 0.029 0.0 0.0 0.0 0.0 0.0 o.a65 ESE 0.000 0.006 0.008 0.004 0.0 0.0 0.0 0.0 0.0 0.018 SE 0.000 '0. 006 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.006 SSE 0.000 0. 00'7 0.0 0.0 0.0 0.0 0.0 Q.o 0.0 0.007 S 0.000 0.006 0.0 0.0 0.0 0.0 0.0 o.a 0.0 0.006 SSW 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 SW 0.0 0.0 0.0 0.0 0.0 0.0 o.a 0.0 0.0 0.0 WSW 0.0 0.0 0.0 0.0 0.006 0.0 0.0 0.0 0.0 0.006 W 0.0 0.0 0.0 0.0 Q.Q a.o 0.0 0.0 0.0 0.0 WNW 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 NW 0.0 0.0 0.0 Q.o 0.0 0.0 0.0 0.0 0.0 0.0 NNW 0.000 0.0 Q ~ 021 o.o44 0.015 0.0 0.0 0.0 0.0 0.080 SUBTOTAL 0.003 0.041 0.200 0.275 0.061 0.0 0.0 0.0 0.0 0.580 TOTAI HOURS OF VALID OBSERVATIONS 2136. 000 TOTAL HOURS OF GROUND LEVEL REIEASE 110.550 TOTAL HOURS OP STABILITY CLASS P 188.290 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS F 12.390 METEOROLOGICAL FACILITY: MET FACILITY LOCATED 1. 3 KM ESE OF BROWNS PERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND DIRECTION MEASURED AT 10.42 METER LEVEL WIND SPEED MEASURED AT 10.42 METER LEVEL EFFLUENT VELOCITY 3= 12 '0 M/S DATE PRINTED: 10/28/91 00 tD M I

~MKQtb CL NOTE. TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS 0 H AlllO '0g 0

SPLIT JOINT PERCENTAGE PREQVEN F WIND SPEED BY WIND DIRECTION POR STABILITY CLASS G t DELTA T > 4. 0 C/100 M)

BROWNS PERRY NUCLEAR PLANT PART 1 OF 2 GROUND LEVEL RELEASE MODE JUL 1, 91 - SEP 30, 91 WIND WIND SPEED(MPH)

DIRECTION 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 0.001 0.003 0.027 0.025 0.0 0.0 0.0 0.0 0.0 0.057 NNE 0.002 0.0 0.035 0.036 0.008 0.0 0.0 0.0 0.0 0.081 NE 0.000 0.001 0.001 O.QQ7 0.0 0.009 0.0 0.0 0.0 0.019 ENE 0.002 0.003 0.033 0.007 0.0 0.0 0.0 0.0 0.0 0.045 E 0.000 0.005 0.0 0.011 0.0 0.0 0.0 0.0 0.0 0. 016 ESE 0.,0 0.0 0.0 0.0 0.0 0.0 0.0 a.o 0.0 0.0 SE 0.0 0.0 0.0 0.002 0.0 0.0 0.0 0.0 0.0 0.002 SSE 0.000 0.000 0.0 0.0 0.0 0.0 .0.0 0.0 0.0 0.000 S O.D 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 SSW 0.0 D.o 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 SW 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 WSW 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 W 0.0 a.o 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 WNW 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0'.o 0.0 0.0 NW 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 NNW 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 SUBTOTAL 0.005 0.013 0.096 0.088 0.008 0.009 0.0 0.0 0.0 0.220 TOTAL HOURS OF VALID OBSERVATIONS 2136.000 TOTAL HOURS OP GROUND LEVEL RELEASE 110.550 TOTAL HOURS OF STABZIITY CLASS G 38.640 TOTAI HOURS OP GROUND LEVEL STABILITY CLASS G 4.690 METEOROLOGICAL PACILITY: MET FACILITY LOCATED 1.3 KM,ESE OP BROWNSBRO FERRY NVCIEAR PLANT STABILZTY 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 LEVEI.

EFFI.VENT VELOCITY ~ 12.60 M/S U W Cd DATE PRINTED: 10/28/91 C 00 O M I P7 C>0 9 NOTE TOTALS AND SVBTOTALS ARE OBTAINED PROM UNROUNDED NVMBERS 0 0 H m~9 M '0 weQ h)i 0

SPLIT JOINT PERCENTAGE FREQUEN F WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS A ( DELTA T< -1. 9 Cf 100 M)

BROWNS FERRY NUCLEAR PLAHT PART 2 OF 2 ELEVATED RELEASE MODE JUL li 91 SEP 30i 91 WIND WIND SPEED(MPH)

DIRECTION 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 0.0 0 ~0 0.0 0~0 0.0 0.0 0.0 0.0 0.0 0.0 NNE 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 NE 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Q.a 0.0 0.0 ENE 0.0 0 ' 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 E 0.0 0.0 0.0 0.0 0.0 0.0 a.o 0.0 0.0 0.0 ESE 0.0 0.0 0.0 0.0 0.0 a.o 0.0 0.0 0.0 0.0 SE 0.0 0.0 0.0 0.0 0 ' 0.0 0.0 0.0 0.0 0.0 SSE 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 S 0.0 0.0 o.a 0.0 0.0 0.0 0.0 0.0 0.0 0.0 SSW Q.Q 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 o.a SW Q.a 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 WSW 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 a.o 0.0 W 0.0 0.0 0.0 0.0 0.045 0.0 0.0 o.a 0.0 a.o45 WNW 0.0 0.0 0.=0 0.0 0.0 0.0 0.0 0.0 0.0 0,0 NW 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 NNW 0.0 0.0 0 ' 0.0 0.0 0.0 0~0 0.0 0.0 0.0 SUBTOTAI 0.0 0.0 0.0 0.0 0.045 0.0 0.0 0.0 0.0 0.045 TOTAL HOURS OF VALID OBSERVATIONS 2136. 000 TOTAL HOURS OF ELEVATED RELEASES 2025.449 TOTAL HOURS OF STABILITY CLASS A 22.670 TOTAL HOURS OF ELEVATED STABII ZTY CLASS A 0.970 I

METEOROLOGICAL FACILZTY: MET FACZLITY LOCATED 1.3 KM ESE OF BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 45.30 AND 89.60 METERS WZND DIRECTION MEASURED AT 45.67 METER LEVEL WIND SPEED MEASURED AT 45.67 METER LEVEL EFFLUENT VELOCITY 12. 60 M/S &W&C DATE PRINTED: 10/28/91 M lD M l

CL NOTE: TOTALS AND SUBTOTAIS ARE OBTAINED FROM UNROUNDED NUMBERS 0 0

th~ g h)r 0

SPLIT JOINT PERCENTAGE FREQUEN P WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS B ( 1.9< DELTA T<= 1 7 C/100 M)

BROWNS FERRY NVCLEAR PLANT PART 2 OF 2 ELEVATED RELEASE MODE JUL 1, 91 - SEP 30, 91 WIND 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 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 NNE 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 NE 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 ENE 0.0 a.o 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 E 0.0 0.0 0.0 0.0 Q.O 0.0 I 0 0 0.0 0.0 0.0 ESE 0.0 0.0 0.0 0.0 0.0 0.0 0.0 a.o 0.0 0 0 SE 0.0 0.0 0.047 0.094 0.045 0.0 0.0 0.0 O.Q 0.1&5 SSE 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 ~ 0.0 S 0.0 0.0 0.0 0;0 0.0 0.0 0.0 0.0 0.0 0.0 SSW 0.0 0.0 0.0 0.047 0.0 0.0 0.0 0.0 0.0 0.047 SW 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0'. 0 WSW 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 W 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 WNW 0.0 0.0 0.0 0.0 0.0 0.041 0.0 0~0 0 ' 0.041 NW a.o 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 NNW 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 SUBTOTAL 0.0 0.0 0.047 0.140 0.045 0.041 0.0 O.Q 0.0 0. 273 TOTAL HOURS OP VALID OBSERVATIONS 2136.000 TOTAL HOVRS OP ELEVATED RELEASES 2025.449 TOTAL HOURS OF STABILITY CLASS B 12.280 TOTAL HOURS OF ELEVATED STABILITY CLASS B 5,830 METEOROLOGICAL FACILITY: MET FACILITY LOCATED 1.3 KM ESE OP BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 45 '0 AND 89.60 METERS WIND DIRECTION MEASURED AT 45.67 METER LEVEL WIND SPEED MEASVRED AT 45.67 METER LEVEI EFFLUENT VELOCITY = 12.60 M/S C4W DATE PRINTED: 10/28/91 00 I

(D P NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS O 0 M phr 9 Md M~A

PERCENTAGE PRE UE F WIND SPEED BY WIND DIR STABILITY CLASS C t-1-7< DELTA T<m-1.5 C/100 M)

BROWNS FERRY HUCIEAR PLANT PART 2 OF 2 ELEVATED RELEASE MODE JUL 1, 91 SEP 30, 91 WIND 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 0.0 0.0 0.0 0.0 0.0 0.0 0.076 0.0 a.076 NNE- 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 NE 0.0 0~0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 EHE 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Q.Q 0.0 E 0.0 0.0 0.0 0.0 0.046 0.0 0.0 0.0 0.0 0.046 ESE 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 SE 0.0 0.0 0.0 0. 281 0.228 0.043 0.0 0.0 O.a 0.552 SSE 0.0 0.0 0.0 0.047 0.046 0.082 0.0 0.0 0.0 0.176 S 0.0 0 ~0 0.0 0 0 ~ 0.0 0.0 0:0 0.0 o.a 0.0 SSW 0.0 0.0 0.047 0.047 0.046 0.043 0.0 0.0 0.0 0.183 SW WSW 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.140 0.0 0.0 0.0 0.092 0.0 0.0 0.0 0.0 0.0 0.0 0.0 a.o'.Q 0.0 Q.Q 0.0 o.a a.o 0.0 0.140 0.092 0.0 WHW 0.0 0.0 0.0 0.0 0.0 0.081 0.0 0.0 0.0 0.081 NW 0.0 0.0 0.0 0.0 0.0 0.0 0.039 0.0 0.0 0.039 HNW 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Q.o 0.0 0.0 SUBTOTAL 0.0 0.0 0.047 Q. 515 0.459 '.249 0.115 0.0 1.384 TOTAL HOURS OF VALID OBSERVATIONS 2136.000 TOTAL HOURS OF ELEVATED RELEASES 2025.449 TOTAI HOURS OF STABILITY CLASS C 35.280 TOTAL HOURS OF ELEVATED STABILITY CLASS C 29.570 METEOROLOGICAL FACILITY: MET FACILITY LOCATED 1 ~ 3 KM ESE OF BROWNS PERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 45.30 AND 89.60 METERS WIND DIRECTION MEASURED AT 45 ~ 67 METER IEVEL WIND SPEED MEASURED AT 45.67 METER IEVEL EFFLUENT VELOCITY ~ 12.60 M/S %44C DATE PRINTED: 10/28/91 00 lD M I

lA U D>

lA lD D NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS 0 Q H th w 9 M 'U h)t

'4 0 0

SPLIT JOINT PERCENTAGE FREQUENCZ WIND SPEED BY WIND DIRECTION FOR STABILZTY CLASS D (-1.5< DELTA T<=-0.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 2 OF 2 ELEVATED REZEASE MODE JUL 1, 91 - SEP 30, 91 WIND 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 0.001 0.0 0.094 0.375 0.136 1.495 0.880 0.0 0.0 2.981 NNE 0.001 0.0 0.187 0.562 0.627 1.640 0.802 0.0 0.0 3.820 NE 0.000 0.0 0.047 0.328 0.399 0.458 0.038 0.015 0.0 1.285 ENE 0.001 0.0 0.094 0.328 0.227 0.162 0 ' 0.0 0.0 0.811 E 0.001 0.0 0.140 0.375 0.089 0.209 0.0 0.0 0.0 0.814 ESE 0.003 0.0 0.421 0.890 0.540 0.654 0.039 0.0 0.0 2.547 SE 0.006 0.0 0.796 1.217 0.949 1.184 1.186 0.0 0.0 5.339 SSE 0.008 0.047 1.030 1.732 1.137 0.991 0 ~ 151 0.0 0.0 5.096 S 0.007 0.094 0.843 1.404 0.869, 0.951 0.116 0.0 0.0 4.283 SSW 0.005 0.047 0.609 1.873 0.910 0.411 0.0 0.0 0.0 3.854 SW 0.004 0.0 0.562 0.983 0.322 0.500 0.0 0.0 0.0 2.371 WSW 0.004 0.0 0.562 1.826 1.138 0.420 0.0 0.0 0.0 3.949 W 0.003 0.0 0.375 1.311 1.672 0.497 0.0 0.0 0.0 3.857 WNW 0.001 0.0 0.094 0.796 1.853 1.049 0.115 0.0 0.0 3.906 NW 0.001 0.0 0.140 0.890 0.996 1.759 0.154 0.0 0.0 3.941 NNW 0.001 0.0 0.094 0.140 0.364 0.288 0.539 0.099 0.0 1.525 SUBTOTAL 0.047 0.187 6.086 15.028 12.228 12.668 4.021 0.114 0.0 50.378 TOTAL HOURS OP VALID OBSERVATIONS 2136.000 TOTAL HOURS OP ELEVATED RELEASES 2025.449 TOTAL HOURS OP STABILITY CLASS D 1107.570 TOTAL HOURS OF ELEVATED STABILITY CLASS D 1076.090 METEOROLOGICAL PACZLZTY: MET FACILITY ZOCATED 1.3 KM ESE OF BROWNS FERRY NUCLEAR PZ,ANT STABILITY BASED ON DELTA-T BETWEEN 45.30 AND 89.60 METERS WIND DIRECTION MEASURED AT 45.67 METER LEVEL WIND SPEED MEASURED AT 45.67 METER LEVEL EFFLUENT VELOCITY Ie 12.60 M/S 44 C tsar DATE PRINTED: 10/28/91 OQ (D M

~am

~eo.

I NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS 0 0 M Ph ~g

'C> 'd 0

STABILITY CLASS E (-0. 5< DELTA T<~ 1. 5 C/100 M) 0 BROWNS FERRY NUCLEAR PLANT PART 2 OF 2 ELEVATED REIEASE MODE JUL li 91 SEP 302 91 WIND WIND SPEED(MPH)

DIRECTION 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 0.014 0 ~ 04'I 0.234 0. 515 0.362 0.982 0.078 0.0 0.0 2.232 NNE 0.009 0.0 0.187 0.421 0.409 1.353 0.077 0.0 0.0 2.457 NE 0.009 0.0 0.187 0.562 0.227 0.780 0.0 0.0 Q.Q 1.766 ENE 0.036 0.234 0.468 0.609 0.270 0.459 0.0 0.0 O.a 2.076

.E 0.026 0.140 0.375 0.468 0.633 0.917 0.039 Q.O 0.0 2.598 ESE 0.024 0.094 0.375 0.890 1 ~ 129 0.761 0.0 0.0 0.0 3.271 SE 0.031 0.0 0.609 0.936 0.408 0.378 o.a 0.0 0.0 2.362 SSE 0.017 0.047 0.281 0.702 0.320 0.623 0.0 0.0 0.0 1.989 S 0.026 0.0 0.515 '0. 562 0.402 0.736 0.0 0.0 0.0 2.241 SSW 0.047 0.094 0.843 0.655 Q.178 0.213 0.0 0.0 0.0 2.030 SW 0.043 0.0 0.843 0.843 0 ~ 181 0.208 0.0 0.0 0-0 2.117 WSW 0.021 0.047 0.375 0.562 0.270 0.124 0.0 0.0 0.0 1.398 W 0.036 0.140 a.562 0.749 0.726 0.292 0.039- 0.0 0.0 2.543 WNW 0.019 0.094 0.281 0.328 0.274 0.124 0.0 0.0 0.0 1 ~ 120 NW 0.005 0.0 0.094 0.375 0.181 0.243 0.0 0.0 0.0 0.897 NNW 0.012 0.0 0.234 0.421 0.589 0.373 0.155 0.037 0.0 1.821 SUBTOTAL 0.375 0.936 6.461 9.597 6.560 8.566 0.387 0.037 0.0 32.918 TOTAL HOURS OF VALID OBSERVATIONS 2136.000 TOTAL HOURS OP ELEVATED RELEASES 2025.449 TOTAL HOURS OP STABZI ITY CLASS E 731.270 TOTAL HOURS OF ELEVATED STABII ZTY CLASS E 703.140 METEOROLOGICAL FACZI ITY: MET PACILITY LOCATED 1. 3 KM ESE OP BROWNS PERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 45. 30 AND 89. 60 METERS WIND DIRECTION MEASURED AT 45.67 METER I EVEL WIND SPEED MEASURED AT 45. 67 METER LEVEL EFFLUENT VEI OCZTY ~ 12. 60 M/6 2U 44 DATE PRINTED: 10/28/91 CQ (D M I

'tJ2 (D 0 NOTE TOTALS AND SUBTOTAIS ARE OBTAINED PROM UNROUNDED NUMBERS 0 O

g W 2O Q w0

SPLIT JOINT PERCENTAGE FREQUEN STABILITY CLASS P (

P WIND'PEED BY WIND DIRECTION FOR

1. 56: DELTA T<= 4. 0 C/100 M) 0 BROWNS PERRY NUCLEAR PIANT PART 2 OP 2 ELEVATED RELEASE MODE JUL 1, 91 SEP 30, 91 WIND WIND SPEED(MPH)

DIRECTION CALM 0.6-1.6 1.5-3.4 3.5-5 ' 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4 >~24.5 TOTAL N 0.013 0.0 0. 187 0.094 0.268 0.577 0.039 0.0 0.0 1. 178 NNE 0.003 0.0 0.047 0.281 0.359 0. 452 0.117 0.0 0.0 1. 258 NE 0.007 0.0 0.094 0.375 0.225 0.538 0.038 0.0 0.0 1.276 ENE 0.003 0.047 0.0 0.375 0.270 Q.082 0 ~ 0 0.0 0.0 0.776 E 0.0 0.0 0.0 0.187 0.045 0.250 0.0 0.0 0.0 0.482 ESE 0.003 0.0 0.047 0.047 0.132 0.127 0.0 0.0 0.0 ~ 0.356 SE 0.007 0.'0 0.094 0.187 0.046 0.0 0.0 0.0 0.0 0.333 SSE 0.010 0.047 0.094 0.094 0.138 0.0 0.0 0.0 0.0 0.382 S 0.013 0.047 0.140 0.094 0.135 0.0 0.0 0..0 O.Q 0.430 5SW SW WSW 0.003 0.0 0.010

'.0 0.0 0.0 0.047 0.0 0.140 0.047 0.281 0.140 0.046 0.047 0.045 0.0 0.0 0.043 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.143 0.328 0.379 W 0.010 0.047 0.094 0.094 0.044 0.042 0.0 0.0 0.0 0.329 WNW O.QQ3 0.0 0.047 0.094 0.0 0.0 0.0 0.0 0.0 0.144 NW 0.0 0.0 0.0 0 ' 0.047 0.0 0.0 0.0 0.0 0.047 NNW 0.007- 0 ' 0.094 0.0 0.089 0.203 0.0 0.0 0.0 0.392 SUBTOTAL 0.094 0.187 1.124 2.388 1.937 2. 312 0.194 0.0 0.0 8.235 TOTAL HOURS OP VAIID OBSERVATIONS 2136.000 TOTAL HOURS OF ELEVATED RELEASES 2025.449 TOTAL HOURS OF STABILITY CLASS P 188.290 TOTAL HOURS OF ELEVATED STABILITY CLASS P 175.900 METEOROLOGZCAI PACILITY: MET PACZLZTY LOCATED 1.3 KM ESE OF BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 45.30 AND 89.60 METERS WIND DIRECTION MEASURED AT 45 '7 METER LEVEL WIND SPEED MEASURED AT 45.67 METER LEVEL EFFLUENT VELOCITY ~ 12.60 M/S e 4C es DATE PRINTED: 10/28/91 00 I

CL NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS O 0 H g

M 'O N 4) Ql 0

SPLIT JOINT PERCENTAGE FREQUEN WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS G (DELTA T > 4.0 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 2 OF 2 ELEVATED RELEASE MODE JUL li 91 SEP 30 i 91 WIND WIND SPEED(MPH)

DIRECTION CAZ M 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 0.0 0.0 0.0 0.0 0.089 0.124 0.0 0.0 0.0 0.213 NNE 0.0 0.0 0.0 0.094 0.133 0.159 0.039 o.a 0.0 O.425 NE 0.0 0.0 0.0 0.0 0.134 0. 412 0.038 0.0 a.o 0.584 ENE 0.0 0.0 0.0 0.047 0.089 0.0 0.0 0.0 O.Q 0.136 E 0.0 ~ 0~0 0.047 0.047 0.045 0.0 0.0 0.0 0.0 0.139 ESE 0.0 0.0 0 ' 0.0 0.0 0.0 0.0 0.0 0.0 O.Q SE 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 SSE 0.0 0.0 0.0 0.047 0.0 0.0 0.0 0.0 0.0 0.047 S a.a 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 SSW 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 SW 0.0 0.0 a.o 0.0 0.0 0.0 0.0 0.0 0.0 0.0 WSW 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 W 0.0 0.0 0.0'.0 0.0 0.0 0 ' 0.0 0.0 0.0 0.0 WNW 0.0 0.0 0.0 a.o 0.0 0.0 0.0 0.0 0.0 NW 0.0 0.0 0.0 0.0 O.Q 0.0 0.0 0.0 0.0 0.0 NNW 0.0 0.0 0.0 0.0 0.045 Q.Q 0.0 0.0 0.0 0.045 SUBTOTAL 0.0 0.0 0.047 0.234 0.537 0.694 0.077 a.o 0.0 1.589 TOTAZ HOURS OF VALID OBSERVATIONS 2136.000 TOTAL HOURS OF ELEVATED RELEASES 2025.449 TOTAL HOURS OF STABIIITY CLASS G 38.640 TOTAL HOURS OF ELEVATED STABILITY CLASS G 33.950 METEOROLOGICAL FACILITY: MET FACILITY LOCATED 1.3 KM ESE OF BROWNSBROWN FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 45.30 AND. 89.60 METERS WIND DIRECTION MEASURED AT 45.67 METER LEVEL WIND SPEED MEASURED AT 45.67 METER LEVEL EFFLUENT VELOCITY m 12.60 M/S Q

DATE PRINTED: 10/28/91 OQ 0 Y I

~O0 O.

NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS Q A I

'0g M

~ M F4 w 0 Qs

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

BROWNS FERRY NUCLEAR PLANT JUL 1, 91 - SEP 30, 91 WIND 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 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 NNE 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Q.O NE 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 ENE a.a 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 E 0.0 0.0 0.0 O.Q 0.0 0.0 0.0 0.0 0.0 0.0 ESE 0.0 0.0 0~0 0.0 0.0 0.0 O.Q 0.0 0.0 0.0 SE 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 SSE 0 ' 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 S 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 SSW 0.0 0.0 O.a 0.0 0.0 0.0 0.0 0.0 0.0 0.0 SW 0. 0. 0.0 0.0 0.0 O.Q 0.0 0.0 0.0 0.0 0.0 WSW 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Q.Q 0.0 0.0 W 0.0 0.0 0,. 0 0.0 0.046 0.0 0.0 0.0 0.0 Q.046 WNW 0.0 0 ' 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 NW 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 NNW 0.0 0 ' 0.0 0.0 a.a 0.0 0.0 0.0 0.0 0.0 SUBTOTAL 0.0 0.0 0.0 0.0 0.046 0.0 0.0 0.0. 0.0 0.046 TOTAL HOURS OF VALID STABILITY OBSERVATZONS 2181 TOTAL HOURS OF STABIZ ZTY CLASS A TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS A TOTAL HOURS OF VALID WIND DZRECTZON-WIND SPEED<<STABILZTY OBSERVATIONS 2174 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: MET FACILITY LOCATED 1.3 KM ESE OF BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON LAPSE RATE MEASURED BETWEEN 45.30 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT THE" 92.63 METER LEVEL DATE PRINTED: 10/28/91 MEAN WIND SPEED = 6 ~ 7 MPH IKI tD &

NOTE: TOTALS AND SUBTOTALS ABOVE ARE OBTAINED FROM UNROUNDED NUMBERS I WCIV (XI lb O O

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

JOINT PERCENTAGE FREQUENCIES ND SPEED BY WIND DIRECTION FOR STABILITY CLASS B (-1-9< DELTA-T<~-1.7 C/100 M)

BROWNS FERRY NVCLEAR PLANT JUL 1, 91 - SEP 30, 91 WIND WIND SPEED(MPH)

DIRECTION CALM 0.6-1.4 3.5-3.5 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4 >~24.5 TOTAL N 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 NNE 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 NE 0.0 0.0 0.0 a.o 0.0 0.0 0.0 0.0 0.0 0.0 ENE 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 E 0.0 Q.a 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 ESE 0.0 0.0 0.0 0.0 0.0 0.046 0.0 0.0 0.0 0.046 SE 0.0 0.0 0.0 0.046 o.o46 0.046 0.0 0.0 0.0 0. 138 SSE 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 S 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 o.a SSW 0.0 0.0 0.0 0.046 0.0 0.0 0.0 0.0 0.0 0.046 SW 0.0 0.0 0.0 0.0 0.0 0 ' 0.0 0.0 Q.a 0.0 WSW 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 a.o 0.0 W 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 WNW 0.0 0.0 0.0 0.0 0.0 0.046 0.0 a.a 0.0 0.046 NW 0.0 0.0 0.0 0.0 0.0 0.0 0.046 0.0 0.0 0.046 NNW 0.0 0.0 0.0 0.0 0.0 0.0 Q.O 0.0 0.0 0.0 SUBTOTAL 0.0 0.0 0.0 0.092 0.046 0.138 0.046 0.0 0.0 0.322 3

TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2181 TOTAL HOVRS OF STABILITY CLASS B 7 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS B 7 TOTAL HOURS OP VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2174 TOTAL HOVRS CALM 0 METEOROLOGICAL PACILITY: MET FACILITY LOCATED 1.3 KM ESE OF BROWNS PERRY NUCLEAR PLANT STABILITY BASED ON LAPSE RATE MEASURED BETWEEN 45.30 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT THE 92.63 METER LEVEL DATE PRINTED: 10/28/91 MEAN WIND SPEED ~ 8.3 MPH C

OQ I ID M NOTE: TOTALS AND SUBTOTALS ABOVE ARE OBTAINED FROM UNROUNDED NUMBERS ~as a.

~Q I

O 0 '

M 3 8 3O 'O t43 0

JOINT PERCENTAGE FREQUENCIES D SPEED BY WIND DIRECTION FOR STABILITY CLASS C (-1.7< DELTA-T<~-1.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT JUL 1, 91 SEP 30, 91 WIND WIND SPEED(MPH)

DIRECTION CALM 6.6-2.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4 2=24.6 TOTAL N 0.0 0.0 0.0 0.0 a.o 0.0 0.092 0.0 0.0 0.092 NNE 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 NE 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 ENE 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 E 0.0 0.0 0 ' 0.0 0.046 0.0 0.0 0.0 0.0 0.046 ESE 0.0 0.0 0.0 0.046 0.138 0.0 0.0 0.0 0.0 0.184 SE 0.0 0.0 0.046 0.0 0.138 0.230 0.0 0.0 0.0 0.414 SSE 0.0 0.0 0.0 0.0 0.046 0.046 0.046 0.0 a.o 0.138 S 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 SEW 0.0 0.0 0.0 0.0 o.o46 0.046 0.0 0.0 0.0 0.092 SW 0.0 0.0 0.046 0.092 0.0 0.0 0.0 0.0 0.0 0.138 WSW 0.0 0.0 0.0 0.092 0.092 0.0 0.0 0.0 0.0 0.184 W 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 WNW 0.0 0.0 0.0 0.0 0.0 0.092 0.0 0.0 0.0 0.092 NW 0.0 o.a 0.0 0.0 0.0 0.0 0.046 0.0 0.0 0.046 NNW 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 SUBTOTAL 0.0 0.0 0.092 0.230 0. 506 0. 414 0.184 0.0 0.0 1.426 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2181 TOTAL HOURS OF STABILITY CLASS C 31 TOTAL HOURS OF VALID WIND DIRECTZON-WIND SPEED-STABILITY CLASS C 31 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2174 TOTAL HOURS CALM 0 4 METEOROLOGICAL FACILITY: MET FACZLZTY LOCATED 1.3 KM ESE OF ROWNS BR WN FERRY NUCLEAR PLANT S TABZLITY B BASED ON LAPSE RATE MEASURED BETWEEN 92 ~ 63 45 '0 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT THE METER LEVEL DATE PRINTED. 10/28/91 MEAN WIND SPEED 8.2 MPH W W Cd Qs 4 00 lD M NOTE: TOTALS AND SUBTOTALS ABOVE ARE OBTAINED FROM UNROUNDED NUMBERS I o a2 0

0 AC2 '0g V Cl N 2 0

JOINT PERCENTAGE FREQUENCIES ND SPEED BY WIND DIRECTION FOR STABILITY CLASS D (-1. 5( DEZ TA-T(55-0. 5 C/100 M)

BROWNS FERRY NUCLEAR PLANT JUL 1, 91 SEP 30, 91 WIND WIND SPEED(MPH)

DIRECTION 0.6-1.4 1.5-3.4 3 ~ 5-5.4 5.5-7.4 7.5-12.4 12.5-1&.4 18.5-24.4 )=24.5 TOTAL-N 0.000 0.0 0.046 0.184 0.368 1.196 1.518 0.368 0.0 3.680 NNE 0.001 0.0 0.138 0.322 0.598 1.702 1.288 0.0 0.0 4.O49 NE Q.QQQ 0.0 0.046 0.230 0.184 0.552 0 ~ 138 0.0 0.0 1.150 ENE 0 ~ 000 0.046 0.0 0.. 276 0.092 0.322 0.092 0.0 0.046 .0.874 E 0.000 0.0 0.046 0.092 0.092 0.276 0.046 0.0 0.0 0.552 ESE 0.003 0.0 0.322 0.414 0.598 1.242 0.414 0.138 0.0 3.131 SE 0.006 0 ~ 046 0.598 1.380 0.644 1.196 1.334 1.104 0.046 6.354 SSE 0.009 0.092 0.874 a.69o 0.874 1.012 0.276 0.046 0.0 3.873 S 0.006 Q.a46 0 '44 0.782 0.828 1.150 0.230 0.0 0.0 3.686 SSW o.ao5 0.0 0.552 0.782 1.012 1.058 0.460 0.0 Q.Q 3.869 SW 0.004 0.046 0.368 0.828 0.368 0.414 0 ~ 276 a.o 0.0 2.304 WSW 0.004 0.0 0.460 1.748 0.598 0.966 0.092 0.0 0.0 3.868 W 0.003 0.0 0.368 1.242 1.932 1.472 0.184 0.0 0.0 5.201 WNW 0.002 0.0 0.184 0.782 1.610 1.748 0.184 0.046 0.0 4.555 NW 0.001 0.0 0.092 0.598 0.920 1.886 0.230 0.046 0.0 3.773 NNW Q.aal 0.0 0.092 0.046 0.276 0.414 0.782 0.046 0.046 1.703 SUBTOTAL 0.046 0.276 4.830 10.396 10.994 16.605 7.544 1.794 0.138 52.622 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2181 TOTAL HOURS OF STABILITY CLASS D 1147 TOTAZ HOURS OF VALID WIND DIRECTION-WZND SPEED-STABILITY CLASS D 1144 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILZTY OBSERVATIONS 2174 TOTAL HOURS CALM 1 METEOROLOGICAL FACILITY: MET FACILITY LOCATED 1 ~ 3 KM ESE OF BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON ZAPSE RATE MEASURED BETWEEN 45 30 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT THE 92.63 METER LEVEL DATE PRINTED: 10/28/91 MEAN WIND SPEED ~ 8.4 MPH 5U 4P 00 (D Y NOTE: TOTALS AND SUBTOTALS ABOVE ARE OBTAINED FROM UNROUNDED NUMBERS

~O3 A O

0 Hl W g 3C3 'U tO w0

JOINT PERCENTAGE FREQUENCIES ND SPEED BY WIND DIRECTION FOR STABILITY CLASS E ( 0 .5< DELTA-T<55 1.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT JUL 1, 91 SEP 30, 91 WIND WIND SPEEDtMPH)

DIRECTION CALM 5.6-1.4 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 0.0 Q.Q a.a92 0.184 0.138 0.644 1. 012 0.092 0.0 2.162 NNE 0.0 0.046 0.092 0.092 0. 184 0. 828 l. 196 0.092 0.0 2.530 NE 0.0 0.092 0.092 0.368 0.506 0.506 0.552 0.046 0.0 2.162 ENE 0.0 0.0 0.046 0.506 0.368 0.230 0.092 0.0 0.0 1.242 E 0.0 '.046 0.230 0.230 0.276 0.920 0.368 Q.Q 0.0 2.070 ESE 0.0 0.046 0.184 0.552 0.598 1.242 0.230 0.0 0.0 2.852 SE 0.0 0.0 0.322 0.414 0.828 1. 564 0.690 0.0. 0.0 3.818 SSE 0.0 0.0 0.414 0.598 0.552 0. 736 0.322 0.0 0.0 2.622 S 0.0 0.092 0.276 0.414 0.552 0. 552 0. 64'4 0.0 0.0 2.530 SSW 0.0 0.0 0.414 0.506 0.276 0.368 0.230 0.0 0.0 1.794 SW 0.0 0.0 0.322 0.276 0.506 0.598 0.322 0.0 0.0 2.024 WSW 0.0 0.0 0.322 0.5Q6 0.552 0.322 0.276 0.0 0.0 1.978 W 0.0 0.046 0.184 0.644 0.460 0.736 0.230 0.0 0.0 2.300 WNW 0.0 0.0 0.276 0.782 0.506 0.644 0.0 0.0" 0.0 2.208 NW 0.0 0.046 0.322 0.230 0.138 0.322 0.276 0.0 0.0 1.334 NNW 0.0 0.0 0.138 0.046 0.184 0.506 0.460 0.138 0.0 1.472 SUBTOTAL 0.0 0.414 3.726 6.348 6.624 10.718 6.900 0.368 0.0 35.096 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2181 TOTAL HOURS OF STABILITY CLASS E 767 TOTAL HOURS OF VAI ZD WIND DIRECTION-WIND SPEED-STABILITY CLASS E 763 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABZLITY OBSERVATIONS 2174 TOTAL HOURS CALM 0 METEOROLOGICAL FACZLITY: MET FACILITY LOCATED 1.3 KM ESE OF BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON LAPSE RATE MEASURED BETWEEN 45.30 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT THE 92.63 METER LEVEL DATE PRINTED: 10/28/91 MEAN WIND SPEED ~ 8.3 MPH 00 tD M I

NOTE: TOTALS AND SUBTOTALS ABOVE ARE OBTAINED FROM UNROUNDED NUMBERS ~am M Q3 C3 n

0

'C) g

'0

$0 h) ~ 0

JOINT PERCENTAGE FREQUENCIES ND SPEED BY WIND DIRECTION FOR STABILZTY CLASS F ( 1.5< DEI.TA-T< 4.0 C/100 M)

BROWNS FERRY NUCLEAR PLANT JUL li 91 SEP 30'1 WIND 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 0.0 0.0 0.0 0.0 0.046 0.184 0.368 0.092 0.0 0.690 NNE 0.0 Q.o o.a 0.0 0.138 0.414 0.460 0.322 0.0 1.334 NE 0.0 0.0 0.046 0.138 0.230 0.460 0.276 a.o46 0.0 1.196 ENE 0.0 0.046 0.046 0.0 0.092 0.322 0.230 0.0 0.0 0.736 E 0.0 0.0 0.046 0.138 0.230 0.322 0.0 0.0 0.0 0.736 ESE 0.0 0.0 0.230 0.092 0.138 0.276 0.092 0.0 0.0 0.828 SE 0.0 0.0 0.046 0.046 0.092 0.138 Q.Q 0.0 0.0 0.322 SSE 0.0 0.0 0.0 0.0 0.092 0.322 0.0 0.0 0.0 0.414 S 0.0 0.0 0.046 0.046 0.046 0.230 0.046 0.0 0.0 0.414 SSW 0.0 0.0 0.092 0.046 0.0 0.0 0.0 0.0 0.0 0.138 SW 0.0 0.0 0.046 0.0 0.0 0.092 0.138 0.0 0.0 0.276 WSW 0.0 0.0 0.046 0.046 0.138 0.0 0.046 0.0 0.0 0.276 W 0.0 0.0 0.046 0.138 0.184 0.0 0.046 0.0 0.0 0.414 WNW 0.0 0.0 0.046 0.046 0.184 0.046 0.0 0.0 0.0 0.322 NW 0.0 0.0 0.184 0.046 0.046 0.0 0.046 0.0 0.0 0.322 NNW 0.0 0.0 0.046 0.0 0.046 0.046 0.230 0.0 0.0 0 '68 SUBTOTAL 0.0 0.046 0.966 0.782 1.702 2.852 1.978 0.460 0.0 8.786 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2181 TOTAL HOURS OP STABILITY CLASS F 191 TOTAL HOURS OF VALZD WIND DIRECTION-WZND SPEED-STABII ITY CLASS F 191 TOTAL HOURS OF VALID WIND DIRECTZON-WIND SPEED-STABILITY OBSERVATIONS 2174 TOTAL HOURS CALM 0" METEOROLOGICAL FACILITY: MET FACILITY LOCATED 1.3 KM ESE OF BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON LAPSE RATE MEASURED BETWEEN 45.30 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT THE 92.63 METER LEVEL DATE PRINTED 10/2&/91 MEAN WIND SPEED ~ 9.7 MPH

'&WC' 00 I 0 M

.) Pcl NOTE: TOTALS AND SUBTOTALS ABOVE ARE OBTAINED FROM UNROUNDED NUMBERS ~NP)

~e p.

O 0 M the '0g W

Ql h)r 0

JOINT PERCENTAGE FREQUENCIES D SPEED BY WIND DIRECTION FOR STABILITY CLASS G (DELTA T > 4 0 C/100 M]

BROWNS PERRY NUCLEAR PLAHT JUL 1, 91 SEP 30, 91 WIND 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 0.0 O.Q Q.a 0.0 0.0 0.0 0.092 0.0 0.0 0.092 NNE 0.0 0.0 0.0 0.0 0.046 0.0 0.138 0.138 0.0 0.322 NE 0.0 0.0 0.0 0.0 0.0 0.138 0.184 0.046 0.0 0.368 ENE 0.0 0.0 0.0 0.0 0.046 0.138 0.092 0.092 0.0 0.368 E 0.0 0.0 0.0 0.0 0.046 0.276 0.0 0.0 0.0 0.322 ESE 0.0 0.0 0.0 0.0 0.046 0.0 0.0 0.0 0.0 0.046 SE 0.0 0.0 0.0 0.0 0.092 0 ' 0.0 0.0 0.0 0.092 SSE O.Q a.o 0.0 0.0 0.0 0.046 0.0 0.0 0.0 0.046 S 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 SSW 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 SW 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 WSW 0.0 0.0 O.Q o.a 0.0 0.0 0.0 0.0 0.0 0.0 W 0.0 0.0 0.0 0.0 0.0 0.0 0.0 O.Q a.o 0.0 WNW 0. 0- 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 NW 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 NNW 0.0 0.0 0.0 0.0 0.0 0.0 0.046 0.0 0.0 o.o46 SUBTOTAL 0.0 0.0 0.0 0.0 0.276 0.598 0.552 0.276 0.0 1.702 TOTAZ HOURS OF VALID STABILITY OBSERVATIONS 2181 TOTAL HOURS OF STABILITY CLASS G 37 TOTAL HOURS OF VALID WIND DIRECTZON-WIND SPEED-STABILITY CLASS G 37 TOTAL HOURS OP VALID WIND DIRECTION-WIHD SPEED-STABILITY OBSERVATIONS 2174 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: HET FACILITY LOCATED 1.3 KM ESE OF BROWNS FERRY NVCLEAR PLANT STABILITY BASED ON LAPSE RATE MEASURED BETWEEN 45.30 AND 89.59 METERS WIND SPEED AND DIRECTION MEASVRED AT THE 92.63 METER LEVEL DATE PRINTED 1Q/28/91 MEAN WIND SPEED ~ 12.2 MPH MW VS C

(A tD M NOTE: TOTALS AND SUBTOTALS ABOVE ARE OBTAINED PROM VNROUNDED NUMBERS I 4

MtD 9 O

0 H Ph w g N r 0 rt

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

BROWNS FERRY NUCLEAR PLANT OCT 1, 91 DEC 31, 91 WIND SPEED(MPH)

DIRECTION 0.6-1.4 1.5-3.4'IND 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4 >=24.5 TOTAL N 0.0 0.0 0.0 0.0 0.093 0.558 0.093 0.0 0.0 0.744 NNE 0 ' 0.0 0.0 0.0 0.046 0.279 0.0 0.0 0.0 0.325 NE 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 ENE 0.0 0.0 0.0 0.046 0.0 0.0 0.0 0.0 0.0 0.046 E 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 ESE 0.0 0.0 0.0 0.093 0.186 0.046 0.0 0.0 0.0 0.325 SE 0.0 0.0 0.232 1.534 0.232 0.046 0.0 0.0 0.0 2.046 SSE 0.0 0.0 0.418 0.604 0.0 0.0 0.0 0.0 0.0 1.023 S 0.0 0.0 0.418 0.372 0.0 0.0 0.0 0.0 0.0 0.790 SSW 0.0 0.0 0.046 0.046 0.0 0.0 0.0 0.0 0.0 0.093 SW 0.0 0.0 0.0 0.046 0.0 0.0 0.0 0.0 0.0 0.046 WSW 0.0 0.0 0.0 0.093 0.0 0.0 0.0 0.0 0.0 0.093 W 0.0 0.0 0.0 0.046 0.0 0.046 0.046 0.0 0.0 0.139 WNW 0.0 0.0 0.0 0.0 0.0 0.046 0.046 0.0 0.0 0.093 NW 0.0 0.0 0.0 0.0 0.046 0 ' 0.0 0.0 0.0 0.046 NNW 0.0 0.0 0.0 0.0 0.046 0.093 0.186 0.0 0.0 0.325 SUBTOTAL 0.0 0.0 1.116 2.882 0.651 1.116 0.372 0.0 0.0 6.137 TOTAL HOURS OF VALID STABZLZTY OBSERVATIONS 2183 TOTAL HOURS OF STABILITY CLASS A 133 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS A 132 TOTAZ HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2151 TOTAL HOURS CALM 0 METEOROLOGICAL FACZLITY: MET FACILITY LOCATED 1.3 KM ESE OF BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON LAPSE RATE MEASURED BETWEEN 10.03 AND 45.30 METERS WZND SPEED AND DIRECTION MEASURED AT THE 10.42 METER LEVEL DATE PRZNTED: 01/2 2/9 2 MEAN WIND SPEED ~ 5.7 MPH NOTE: TOTALS AND SUBTOTALS ABOVE ARE OBTAINED FROM UNROUNDED NUMBERS C N VR (D C I

mWQ M(D D O

0 M

'dg

'4 M

4) Q) h)r 0

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

BROWNS FERRY NUCLEAR PLANT OCT 1, 91 - DEC 31, 91 WZND SPEED(MPH)

DIRECTION 0.6-1.4 1.5-3.4'IND 3.5-5.4 5.5-7.4 7.5-12.4 '2.5-18.4 18.5-24.4 >=24.5 TOTAL N 0.0 0.0 0.0 0.046 0.093 0.418 0.0 0.0 0.0 0.558 NNE 0.0 0.0 0.0 0.046 0.0 0.093 0.0 0 .'0 0.0 0.139 NE 0.0 0.0 0.0 0.0 0.046 0.0 0.0 0.0 0.0 ~ 0.046 ENE 0.0 0.0 0.0 0.046 0.0 0.0 0.0 0.0 0.0 0.046 E 0.0 0.0. 0.0 0.0 0.0 0.0 0.0 0.0 0.0- 0.0 ESE 0.0 0.0 0.046 0.139 0.0 0.0 0.0 0.0 0.0 0.186 SE 0.0 0.0 0.325 0.186 0.093 0.046 0.0 0.0 0.0 0.651 SSE 0.0 0.0 0.325 0.186 0.0 0.0 0.0 0.0 0.0 0.511 S 0.0 0.0 0.093 0.139 0.0 0.0 0.0 0.0 0.0 0.232 SSW 0.0 0.0 0.093 0.093 0.0 0.0 0.0 0.0 0.0 0.186 SW 0.0 0.0 0.046 0. 186 0.0 0.0 0.0 0.0 0.0 0.232 WSW 0 ' 0.046 0.0 0.046 0.0 0.0 0.0 0.0 0.0 0.093 W 0.0 0.0 0.046 0.0 0.046 0.279 0.093 0.0 0.0 0.465 WNW 0.0 0.0 0.0 0.046 0. 186 0.046 0.093 0.0 0.0 0.372 NW 0.0 0.0 0.0 0.0 0.046 0.465 o.o46 0.0 0.0 0.558 NNW 0.0 0.0 0.0 0.0 0.0 0.232 0.0 0.0 0.0 0.232 SUBTOTAL 0.0 0.046 0.976 1.162 0.511 i 1.581 0.232 0.0 0.0 4.510 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2183 TOTAL HOURS OF STABILITY CLASS B 97 TOTAL HOURS OF VALID WIND DZRECTION-WIND SPEED-STABILITY CLASS B 97 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBS RVATZONS 2151 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: MET FACZLITY LOCATED 1.3 KM ESE OF BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON LAPSE RATE MEASURED BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT THE 10.42 METER LEVEL DATE PRINTED: 01/22/92 MEAN WIND SPEED ~ 6.5 MPH NOTE: TOTALS AND SUBTOTALS ABOVE ARE OBTAINED FROM UNROUNDED NUMBERS 00

~ac

~

I (D Ct A

0 H g

M 'd Nr 0

0 JOINT PERCENTAGE FREQUENCIES 0 STABZLITY CLASS C (-1. 7<

D SPEED BY WIND DZRECTZON FOR DELTA-T<~-1. 5 C/100 M) 0 BROWNS FERRY NUCLEAR PLANT OCT 1, 91 DEC 31, 91 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 )a24.5 TOTAL N 0.0 0.0 0.0 0.0 0.046 0.139 0.0 0.0 0.0 0.186 NNE 0.0 0.0 0.0 0.046 0.093 0.046 0.0 0.0 0.0 0.186 NE 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 ENE 0.0 0.0 0.0 0.0 0.046 0.0 0.0 0.0 0.0 0.046 E 0.0 0.0 0.0 0.0 0.046 0.0 0.0 0.0 0.0 0.046 ESE 0.0 0.0 0.046 0.186 0.0 0.046 0.0 0.0 0.0 0.279 SE 0.0 0.0 0.186 0.186 0.0 0.0 0.0 0.0 0.0 0.372 SSE 0.0 0.0 0.325 0.186 0.0 0.0 0.0 0.0 0.0 0. 511 S 0.0 0.0 0.139 0.046 0.0 0.0 0.0 0.0 0.0 0.186 SSW 0.0 0.0 0.046 0.046 0.0 0.0 0.0 0.0 0.0 0.093 SW 0.0 0.0 0.0 0.139 0.0 0.0 0.0 0.0 0.0 0.139 WSW 0.0 0.0 0.0 0.093 0.0 0.0 0.0 0.0 0.0 0.093 W 0.0 0.0 0.0 0.046 0.093 0.046 0.046 0.0 0.0 0.232 WNW 0.0 0.0 0.0 0.046 0.139 0.325 0.0 0.0 0.0 0.511 NW 0.0 0.0 0.0 0.046 0.139 0.232 0.046 0.0 0.0 0.465 NNW 0.0 0.0 0.0 0.0 0.046 0.093 0.0 0.0 0.0 0.139 SUBTOTAL 0.0 0.0 0.744 1.069 0.651 0.930 0.093 0.0 0.0 3.487 TOTAL HOURS OP VALID STABZI ITY OBSERVATZONS 2183 TOTAL HOURS OP STABILITY CLASS C 76 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS C 75 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABZI ITY OBS RVATIONS 2151 TOTAL HOURS CALM 0 METEOROI.OGICAL PACILITY: MET FACILITY LOCATED 1. 3 KM ESE OP BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON LAPSE RATE MEASURED BETWEEN 10.03 AND 45 '0 METERS WIND SPEED AND DIRECTION MEASURED AT THE 10.42 METER LEVEL DATE PRINTED: 01/22/92 MEAN WIND SPEED ~ 5.8 MPH C4W 00 I NOTE: TOTALS AND SUBTOTALS ABOVE ARE OBTAINED PROM UNROUNDED NUMBERS tD M

~a we I

v n

0 M g

M 'U

'4% D)

M A 0

JOINT PERCENTAGE FREQUENCIES STABILITY CLASS D (-1 ~ 5<

D SPEED BY WIND DIRECTION FOR DELTA-T<~-0. 5 C/100 M) 0 BROWNS PERRY NUCLEAR PLANT OCT 1, 91 DEC 31, 91 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 0.0 0.186 0.558 0.418 1.069 0.046 0.0 0.0 2.282 NNE 0.004 0.046 0.139 0.139 0.279 0.604 0.0 0.0 0.0 1.212 NE 0 '05 0.046 0.232 0.511 0.325 0.186 0.0 0.0 0.0 1.307 ENE 0.008 0.046 0.372 0.465 0.418 0.0 0.0 0.0 0.0 1. 310 E 0.010 0.139 0.372 0.604 0.139 0.0 0.0 0.0 0.0 1.265 ESE 0.021 0.0 1.116 0.837 0.139 0.046 0.0 0.0 0.0 2.160 SE 0.023 0.186 1.023 0.651 0.232 0.511 0.0 0.0 0.0 2.626 0.027 0.139 1.302 SSE 0.651 0.0 0.0 0.0 0.0 0.0 2.119 S 0.006 0.046 0.279 0.232 0.046 0.0 0.0 0.0'0.0 0.0 0. 611 SSW 0.006 0.046 0.279 0.093 0.046 0.0 0.0 0.0 0.471 SW 0.007 0.186 0.186 0.139 0.0 0.0 0.0 0.0 0.0 0. 518 WSW 0.005 0.0 0.279 0.139 0.232 0.186 0.0 0.0 0.0 0.842 W 0.004 0.0 0. 186 0.372 0.790 0.976 0.139 0.0 0.0 2.467 WNW 0.004 0.046 0.186 0.279 0.139 0.883 0.744 0.0 0.0 2.282 HW 0.003 0.0 0.139 0.279 0.232 1.302 1.116 0.139 0.0 3.210 NNW 0.003 0.0 0. 139 0.418 0.604 1.302 0.372 0.0 0.0 2.839 SVBTOTAL 0.139 0.930 6.416 6.369 4.045 7.066 2. 417 0.139 0.0 27.522 TOTAl HOURS OP VALID STABZLITY OBSERVATIONS 2183 TOTAl HOVRS OP STABILITY CLASS D 593 TOTAL HOURS OF VALID WIND DZRECTZON-WIND SPEED-STABILITY CLASS D 592 TOTAL HOURS OF VALID WIND DIRECTZON-WZND SPEED-STABILITY OBSERVATIONS 2151 TOTAL HOURS CALM 3 METEOROlOGICAL PACZLZTY: MET FACILITY LOCATED 1.3 KM ESE OP BROWNS FERRY NUCI,EAR PLANT STABILITY BASED ON LAPSE RATE MEASURED BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT THE 10.42 METER LEVEL DATE PRINTED: 01/22/92 MEAN WIND SPEED ~ 6.4 MPH

'U 4 NOTE: TOTALS AND SUBTOTALS ABOVE ARE OBTAINED PROM UNROVNDED NUMBERS 00 ID M

~am I Ooe a.

0 0

g W 'O

'V %

h)r 0

JOINT PERCENTAGE FREQUENCIES 0 SPEED BY WIND DIRECTION FOR STABILITY CLASS E t-0.5< DELTA-T<~ 1.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT OCT 1, 91 DEC 31, 91 WIND WIND SPEED(MPH)

DIRECTION CALM 0 . 6- 1 . '4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4'2.5-18.4 18.5-24.4 >=24.5 TOTAL N 0.030 0.093 0.465 0.930 0.604 0.139 0.0 0.0 0.0 2.262 NNE 0.033 0.186 0.418 0.511 0.558 0.232 0.0 0.0 0.0 1.939 NE 0.013 0.0 0.232 0.418 0.325 0.139 0.0 0.0 0.0 1.128 ENE 0.033 0.093 0.511 0.186 0.0 0.0 0.0 0.0 0.0 0.823 E 0.053 0.0 0.976 0.465 0.093 0.0 0.0 0.0 0.0 1.587 ESE 0.126 0.604 1.720 1.767 0.279 0.0 0.0 0.0 0.0 4.496 SE 0.124 0. 418 1.860 2.092 0. 511 0.093 0.0 0.0 0.0 5.098 SSE 0.111 0.418 1.627 1.674 0.232 0.093 0.0 0.0 0.0 4.156 S 0.066 0.232 0.976 0.465 0.325 0.232 0.0 0.0 0.0 2.297 SSW 0.013 0.046 0.186 0.186 0.0 0.0 0.0 0.0 0.0 0. 431 SW 0.015 0.093 0.186 0.0 0.046 0.046 0.0 0.0 0.0 0.387 WSW 0.020 0.0 0.372 0.046 0.093 0.046 0.0 0.0 0.0 0.578 W 0.013 0.046 0.186 0.093 0. 139 0.0 0.0 0.0 0.0 0.478 WNW 0.010 0.093 0.093 0.139 0.046 0.0 0.0 0.0 0.0 0.382 NW 0.015 0.093 0.186 0.372 0.372 0.186 0.046 0.0 0.0 1.270 NNW 0.023 0.093 0.325 0.790 0.790 0.186 0.046 0.0 0.0 2.254 SUBTOTAL 0.697 2.510 10.321 10.135 4. 417 1.395 0.093 0.0 0.0 29.568 TOTAL HOURS OF VALID STABILITY OBSERVATZONS 2183 TOTAL HOURS OF STABILITY CLASS E 645 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABIIZTY CLASS E 636 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2151 TOTAL HOURS CALM 15 METEOROLOGICAL FACILITY: MET FACILITY LOCATED 1.3 KM ESE OF BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON LAPSE RATE MEASURED BETWEEN 10-03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT THE 10 '2 METER LEVEL DATE PRINTED: 01/22/92 MEAN WIND SPEED ~ 3.8 MPH C4g Q C NOTE: TOTALS AND SUBTOTALS ABOVE ARE OBTAINED FROM UNROUNDED NUMBERS 00

~ tD M

~etI

~e P>

a.

O 0 H th ~g M 'O h) ~ 0

JOINT PERCENTAGE FREQUENCIES SPEED BY WIND DIRECTION FOR STABILITY CLASS F ( 1. 5< DELTA-T<~ 4 .0 C/100 M)

BROWNS FERRY NUCLEAR PLANT OCT 1, 91 DEC 31, 91 WIND WIND SPEED{MPH)

DIRECTION CALH 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 )a24.5 TOTAL N 0.035 0.093 0.558 0.837 0.325 0.0 0.0 0.0 0.0 1.848 NNE 0.015 0.093 0.186 0. 651 0.372 0.0 0.0 0 ~ 0, 0.0 1.317 NE 0.013 0.046 0.186 0.139 0.0 0.0 0.0 0.0 0.0 0.384 ENE 0.025 0.186 0 279 0.372 0.093 0.0 0.0 0.0 ,0. 0.955 E 0.075 0.090 0.139 0.186 l.F 255 1.488 0.744 0.046 0.0 0.0 0.0 0.0 0.0 0

2.214 ESE 0.0 0.0 0.0 0.0 0.0 1. 810 SE 0. 110 0.651 1.395 0.511 0.0 0.0 0.0 0.0 0.0 2.667 SSE 0.063 0.372 0.790 0.558 0. 186 0.093 0.0 0.0 0.0 2.062 S 0.018 0.093 0.232 0.651 0.511 0.604 0.0 0.0 0.0 2. 110 SSW 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 SW 0.005 0.046 0.046 0.0 0.0 0.0 0.0 0.0 0.0 0.098 WSW 0.005 0.0 0.093 0.0 0.0 0.0 0.0 0.0 0.0 0.098 W 0.008 0.046 0.093 0.0 0.0 0.0 0.0 0.0 0.0 0.147 WNW 0.003 0.0 0.046 0.0 0.0 0.0 0.0 0.0 0.0 0.049 NW 0.013 0.093 0.139 0.093 0.0 0.0 0.0 0.0 0.0 0.338 HNW 0.035 0.046 0.604 0.604 0.651 0.0 0.0 0.0 0.0 1.941 SUBTOTAL 0. 511 2.092 7.392 5.207 2.139 0.697 0 ~ 0 0.0 0.0 18.038 TOTAL HOURS OP VALZD STABILITY OBSERVATIONS 2183 TOTAL HOURS OF STABILITY CLASS F 395 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS F 388 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2151 TOTAL HOURS CALM 11 METEOROLOGICAL PACZLITY: MET PACII ZTY LOCATED 1. 3 KM ESE OF BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON LAPSE RATE MEASURED BETWEEN 10.03 AND 45.30 METERS WZND SPEED AND DIRECTION MEASURED AT THE 10.42 METER LEVEL DATE PRINTED: 01/22/92 MEAN WIND SPEED ~ 3.5 HPH Dl C NOTE: TOTALS AND SUBTOTALS ABOVE ARE OBTAINED PROM UNROUNDED NUMBERS 00 I Q M I

~O(D a ro C

0 0

g

'Cl 'O 0

JOINT PERCENTAGE FREQUENCIES D SPEED BY WZND DIRECTION FOR STABILITY CLASS G tDELTA T > 4.0 C/100 M)

BROWNS FERRY NUCLEAR PLANT OCT 1, 91 - DEC 31, 91 WIND WIND SPEEDtHPH)

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 0.239 0.279 0.883 0. 511 0.046 0.0 0.0 0.0 0.0 1.959 NNE 0.258 0. 418 0.837 0.930 0.0 0.0 0.0 0.0 0.0 2.443 NE 0.105 0.372 0.139 0.0 0.093 0.0 0.0 0.0 0.0 0.709 ENE 0.182 0.139 0.744 0.0 0.0 0.0 0.0 0.0 0.0 1.065 E 0.096 0.232 0.232 0.093 0.0 0.0 0.0 0.0 0.0 0.653 ESE 0.029 0.046 0.093 0.0 0.0 0.0 0.0 0.0 0.0 0.168 SE 0.096 0.093 0.372 0.186 0.0 0.0 0.0 0.0 0.0 0.746 SSE 0.296 0.511 0.930 0.279 0.046 0.0 0.0 0.0 0.0 2.063 S 0.019 0.046 0.046 0.0 0.0 0.0 0.0 0.0 0.0 0.112 SSW 0. 010 0.046 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.056 SW 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 WSW 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 W 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 WNW 0.010 0.046 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.056 NW 0.0 0.0 0.0 0.0 . 0.0 0.0 0.0 0.0 0.0 0.0 NNW 0.057 0.093 0.186 0.325 0.046 0.0 0.0 0.0 0.0 0. 708 SUBTOTAL 1.395 2.324 4.463 2.324 0.232 0.0 0.0 0.0 ~

0.0 10.739 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2183 TOTAZ, HOURS OF STABILITY CLASS G 244 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS G 231 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2151 TOTAL HOURS CALM 30 METEOROLOGICAL FACILITY:. MET FACILITY lOCATED 1.3 KM ESE OF BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON LAPSE RATE MEASURED BETWEEN 10.03 AND 45;30 METERS WIND SPEED AND DIRECTION MEASURED AT THE 10.42 METER LEVEL DATE PRINTED: 01/22/92 MEAN WIND SPEED ~ 2.3 MPH NOTE TOTAlS AND SUBTOTALS ABOVE ARE OBTAINED FROM UNROUNDED NUMBERS 00 l (D M I

Ln Ct Q

~ (D 0

CL 0

th w g IO w0

0 SPLIT JOINT PERCENTAGE FREQVENC STABILITY CLASS A (DELTA WIND SPEED BY WIND T<~-1.9 C/100 M)

DIRECTION FOR BROWNS FERRY NUCLEAR PLANT PART 1 OF 2 GROUND LEVEL RELEASE MODE OCT 1, 91 - DEC 31, 91 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 0.0 0.0 0 ~ 0 0.0 0.009 0.081 0,0 0.0 0.0 0.090 NNE 0.0 0.0 0.0 0.0 0.005 0.039 0.0 0.0 0.0 0.043 NE 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 ENE 0.0 0.0 0.0 0.0 0 ' 0.0 0.0 0.0 0.0 0.0 E 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 ESE 0.0 0.0 0.0 0.007 0.018 0.007 0.0 0.0 0.0 0.032 SE 0.0 0.0 0.0 0.074 0.040 0.009 0.0 0.0 0.0 0.123 SSE 0.0 0.0 0.021 0.085 0 ' 0.0 0.0 0.0 0.0 0. 106 S 0.0 0.0 0.024 0.040 0.0 0.0 0.0 0.0 0.0 0.065 SSW 0.0 0.0 0.001 0.003 0.0 0.0 0.0 0.0 0.0 0.004 SW 0.0 0.0 0.0 0.001 0.0 0.0 0.0 0.0 0.0 0.001 WSW 0.0 0.0 0.0 ,0.0 0.0 0.0 0.0 0.0 0.0 0.0 W 0.0 0.0 0.0 0.002 0.0 0 '07 0.014 0.0 0.0 0.023 WNW 0.0 0.0 0.0 0 ' 0.0 0.007 0.018 0.0 0.0 0.025 NW 0.0 0.0 0.0 0.0 0.005 0.0 0.0 0.0 0.0 0.005 HNW 0.0 0.0 0 ' 0.0 0.003 0. 013 0.0 0.0 0.0 0.016 SVBTOTAI 0.0 0.0 0.047 0.212 0.080 0.163 0. 031 0.0 0.0 0.533 TOTAL HOURS OF VALID OBSERVATZONS 2103.000 TOTAL HOURS OP GROUND LEVEL RELEASE 230.430 TOTAl HOURS OP STABILITY CLASS A 11. 210 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS A 11.210 METEOROLOGICAL FACILITY: MET FACILITY LOCATED 1.3 KM ESE OF BROWNS FERRY NUCLEAR PLANT STABZLZTY BASED OH DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND SPEED MEASURED AT 10 '2 '2 WIND DZRECTZOH MEASURED AT 10 EPPLUENT VELOCITY ~ 12.60 M/S METER I,EVEL METER LEVEZ II DATE PRINTED: 01/22/92 C

OQ I

NOTE: TOTALS AND SVBTOTALS ARE OBTAINED PROM UNROUNDED NUMBERS Vl N Q M lD CL 0

0 AwgM 'U N Cl Ql 0

P I CE TAGE FREQUE WZN PEE BY STABILITY CLASS B (-1.9< DELTA T<~-1.7 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 1 OF 2 GROUND LEVEL RELEASE MODE OCT 1, 91 DEC 31, 91 WIND WIND SPEEDtMPH)

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 0.0 0.0 0.0 0.000 0.005 0.044 0.0 0.0 0.0 0. 050 NNE 0.0 0.0 0.0 0.001 0.0 0. 014 0.0 0.0 0.0 0. 015 NE 0.0 0.0 0 ~0 0.0 0.003 0.0 0.0 0.0 0.0 0.003 ENE 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 E 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 ESE 0.0 0.0 0.0 0.006 0.0 0.0 0.0 0.0 0.0 0.006 SE 0.0 0.0 0.0 0.015 0.006 0.010 0.0 0.0 0.0 0.031 SSE 0.0 0.0 0.012 0.0 0.0 0.0 0.0 0.0 0.0 0.012 S 0.0 0.0 0.005 0.019 0.0 0.0 0.0 0.0 0.0 0.024

.SSW 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 SW 0.0 0.0 0.005 0.0 0.0 0.0 0.0 0.0 0.0 0.005 WSW 0.0 0.0 0.0 0.006 0.0 0.0 0.0 0.0 0.0 0.006 W 0.0 0.0 0.0 0.0 0.005 0.048 0.021 0.0 0.0 0.074 WNW 0.0 0.0 0.0 0.0 0.014 0.007 0.028 0.0 0.0 0.049 NW 0.0 0.0 0.0 0.0 0.005 0.068 0.009 0.0 0.0 0.081 NNW 0.0 0.0 0.0 0.0 0.0 0.030 0.0 0.0 0.0 0.030 SUBTOTAL 0.0 0.0 0.022 0.048 0.039 0.221 0.058 0.0 0.0 0.387 TOTAL HOURS OP VALID OBSERVATZONS 2103. 000 TOTAL HOURS OP GROUND LEVEL RELEASE 230 '30 TOTAL HOURS OP STABILITY CLASS B 11.960 TOTAL HOURS OP GROUND LEVEL STABZLITY CLASS B 8.130 METEOROLOGICAL PACZLITY: MET PACILZTY LOCATED 1.3 KM ESE OF BROWNS PERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND DIRECTION MEASURED AT 10.42 METER JEVEL WIND SPEED MEASURED AT 10.42 METER LEVEL EFPLUENT VELOCITY ~ 12.60 M/S DATE PRINTED: 01/22/92 C4C tlat 00 k lD &

NOTE'OTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS 'LA H I

f0 4P (D CL O

0, g

M '0 t4 ~ 0

SPLIT JOINT PERCENTAGE STABILITY CLASS FREQUENC C {-1.7<

WIND SPEED BY WIND DIRECTION FOR DELTA T<55-1.5 C/100 M) 0 BROWNS FERRY NUCLEAR PLANT PART 1 OF 2 GROUND LEVEL RELEASE MODE OCT 1, 91 - DEC 31, 91 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 '-24.4 TOTAL N 0.0 0.0 0.0 0.0 0.005 0.015 0.0 0.0 0.0 0.020 NNE 0.0 0.0 0.0 0.001 0.005 0.009 0.0 0.0 0.0 0.015 NE 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 ENE 0.0 0.0 0.0 0.0 0.003 0.0 0.0 0 .'0 0.0 0.003 E 0.0 0.0 0.0 0.0 0.003 0.0 0.0 0.0 0.0 0.003 ESE 0.0 0.0 0.0 0.018 0.0 0.009 0.0 0.0 0.0 0.027 SE 0.0 0.0 0.0 0. 019 0.0 0.0 0.0 0.0 0.0 0.019 SSE 0.0 0.0, 0. 010 0.009 0.0 0.0 0.0 0.0 0.0 0.019 S 0.0 0.0 0.002 0.008 0.0 0.0 0.0 0.0 0.0 0.010 SSW 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 SW 0.0 0 ' 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 WSW 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 W 0.0 0.0 0.0 0.0 0.013 0.009 0.010 0.0 0.0 0.031 WNW 0.0 0 ' 0.0 0.0 0.008 0.044 0.0 0.0 0.0 0.052 NW 0.0 0.0 0.0 0.000 0.013 0.030 0. 010 0.0 0.0 0.054 NNW 0.0 0.0 0.0 0.0 '

0.002 0.007 0.0 0.0 0.0 0.010 SUBTOTAL 0.0 0.0 0.012 0.055 0.052 0.124 0. 019 0.0 0.0 0.263 TOTAL HOURS OP VALID OBSERVATIONS 2103.000 TOTAL HOURS OP GROUND LEVEL RELEASE 230.430 TOTAI HOURS OP STABILITY CLASS C 13.000 TOTAL HOURS OP GROUND LEVEL STABZI ITY CLASS C 5.530 METEOROIOGZCAL FACZLITY- MET FACILITY LOCATED 1.3 KM ESE OP BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 4S.30 METERS WIND DZRECTZON MEASURED AT 10.42 METER LEVEL WIND SPEED MEASURED AT 10.42 METER LEVEL EFFLUENT VELOCITY ~ 12.60 M/S DATE PRINTED: 01/22/92 'U 4 C

C I

lD M NOTE TOTALS AND SUBTOTALS ARE OBTAZNED PROM UNROUNDED NUMBERS I

'Ln N 95 MG5 0 O

0 4 5 5O g

'O W%l5 h)5 0

SPLIT JOINT PERCENTAGE FREQUENCZ WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS D (-1.5< DELTA T<~-0.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 1 OF 2 GROUND LEVEL RELEASE MODE OCT 1, 91 - DEC 31, 91 WIND WIND SPEEDtMPH)

DIRECTION 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 0.0 0.0 0.0 0.015 0.045 0.176 0.010 0.0 0.0 0.246 NNE 0.0 0 ' 0.0 0.007 0.032 0.106 0.0 0.0 0.0 0.145 NE 0.0 0.0 0.0 0.022 0.028 0.029 0.0 0.0 0.0 0.079 ENE 0.0 0.0 0.0 0.019 0.039 0.0 0.0 0.0 0.0 0.058 E 0 ' 0.0 0.000 0.029 0. 019 0.0 0.0 0.0 0.0 0.048 ESE 0.0 0.0 0.003 0.058 0.015 - 0.0 0.0 0.0 0.0 0.075 SE 0.0 0.0 0.022 0.094 0.014 0 '60 0.0 0.0 0.0 0.290 SSE 0.0 0.004 0.058 0.055 0.0 0.0 0.0 0.0 0.0 0.117 S 0.0 0 ' 0.014 0.039 0.010 0.0 0.0 0.0 0.0 0.062 SSW 0.0 0.0 0.009 0.007 0.010 0.0 0.0 0.0 0.0 . 0.025 SW 0.0 0.0 0.0 0.005 0.0 0.0 0.0 0.0 0.0 0.005 WSW 0.0 0.0 0.002 0.007 0.031 0.034 0.0 0.0 0.0 0.075 W 0 ' 0.0 0.0 0.006 0.096 0.172 0.034 0.0 0.0 0.307 WNW 0 ' 0.0 0.0 0.003 0. 010 0.154 0.181 0.0 0.04 0.349 NW 0' 0.0 0.0 0.008 0.026 0.202 0.401 0.118 0.0 0.754 NNW 0 ' 0.0 0.0 0.019 0.062 0.197 0.099 0.0 0.0 0.377 SUBTOTAL 0.0 .0.004 0.109 0.390 0.435 1.230 0.724 0.118 0.0 3.011 TOTAL HOURS OF VALID OBSERVATIONS 2103.000 TOTAL HOURS OF GROUND LEVEL RELEASE 230.430 TOTAL HOURS OF STABILITY CLASS D 904.770 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS D 63.320 METEOROLOGICAL FACZLZTY: MET FACILITY LOCATED 1.3 KM ESE OF BROWNS FERRY NUCLEAR PLANT STABILZTY BASED ON DELTA-T BETWEEN 10-P3 AND 45.30 METERS WIND DIRECTION MEASURED AT 10.42 METER"LEVEL

'0 '2 WIND SPEED HEASURED AT 10 EFFLUENT VEIOCZTY ~ 12 M/S METER LEVEL DATE PRINTED. 01/22/92 '0 4 td C

00 tb ~

I NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED HUMBERS MNQ Vl Ib CL n

0 H g

'C) '0 N V> Q n

0 SPLIT JOINT PERCENTAGE FREQVENC WIND SPEED BY WIND DIRECTION POR STABILITY CLASS E t-0.5< DELTA T< 1.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 1 OP 2 GROUND LEVEL RELEASE MODE OCT 1, 91 - DEC 31, 91 WIND WIND SPEED(MPH)

DIRECTION CALM 0.6-1.4 1.3-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4 >=24.5 TOTAL N 0.0 0.0 0. 011 0.078 0.060 0.026 0.0 0.0 0.0 0.175 NNE 0.0 0.000 0.014 0.040 0.081 0.040 0.0 0.0 0.0 0.176 NE 0.0 0.0 0.013 0.033 0.042 0.023 0.0 0.0 0.0 '.111 ENE 0.0 0.0 0.038 0.019 0.0 0.0 0.0 0.0 0.0 0.058 E 0.0 0.0 0.030 0 F 058 0.015 0.0 0.0 0.0 0.0 0.104 ESE 0.0 0.006 0.088 0. 197 0.045 0.0 0.0 0.0 0.0 0.337 SE 0.0 0. 010 0.161 0.300 0.124 0. 019 0.0 0.0 0.0 0.614 SSE 0.0 0.016 0.198 0.501 0. 164 0.076 0.0 0;0 0.0 0.954 S 0.0 0.017 0.072 0.083 0.095 0.076 0.0 0.0 0.0 0.342 SSW 0.0 0.0 0.020 0.027 0.0 0.0 0.0 0.0 0.0 0.047 SW 0.0 0.0 0.020 0.0 0.009 0.010 0.0 0.0 0.0 0.039 WSW 0.0 0.0 0.019 0.006 0. 016 0. 010 0.0 0.0 0.0 0.051 W 0.0 0.0 0.017 0.011 0.019 0.0 0.0 0.0 0.0 0.048 WNW 0.0 0.0 0.004 0.014 0.007 0.0 0.0 0.0 0.0 0.025 NW 0.0 0.0 0.0 0.035 0.050 0.032 0. 010 0.0 0.0 0.127 NNW 0.0 0.0 0. 011 0.065 0.104 0.032 0.010 0.0 0.0 0.222 SUBTOTAL 0.0 0.049 0.718 l. 467 0.832 0.343 0.020 0.0 0.0 3.429 TOTAL HOURS OF VALID OBSERVATZONS 2103.000 TOTAL HOURS OP GROUND LEVEL RELEASE 230.430 TOTAL HOURS OF STABILITY CLASS E 833.040 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS E 72.120 METEOROLOGICAL PACZLITYI MET FACZLZTY LOCATED 1.3 KM ESE OF BROWNS PERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45-30 METERS WIND DIRECTION MEASURED AT 10 ~ 42 METER ZEVEL WIND SPEED HEASVRED AT 10.42 METER LEVEL EPFLUENT VELOCITY ~ 12. 60 M/S DATE PRINTED: 01/22/92 fD C 00 I (I3 I

NOTE: TOTALS AND SUBTOTALS ARE OBTAINED PROH UNROUNDED NUMBERS MCI 9I Ch O C3 O

0 H Ph3 g 3C3 '0

'V C> 0)

I@3 0

0 SPLIT JOINT PERCENTAGE STABILITY CLASS BROWNS PRE<)UENC F (

FERRY NUCLEAR PLANT WIND SPEED BY WIND DIRECTION FOR

1. 5< DELTA T<= 4. 0 C/100 M)

PART 1 OF 2 GROUND LEVEL RELEASE MODE OCT 1, 91 DEC 31, 91 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 >a24.5 TOTAL N 0.000 0.000 0.046 0.108 0.050 0.0 0.0 0.0 0.0 0.205 HNE 0.000 0.0 0.014 0.085 0.060 0.0 0.0 0.0 0.0 0.159 NE 0.000 0.006 0.016 0.019 0.0 0.0 0.0 0.0 0.0 0.041 ENE 0.000 0.013 0.009 0.047 0.016 0.0 0.0 0.0 0.0 0.085 E 0.000 0.008 0.042 0.075 0.0 0.0 0.0 0.0 0.0 0.125 ESE 0.000 0.0 0.077 0.006 0.0 0.0 0.0 0.0 0.0 0.083 SE 0.001 0.017 0.159 0.093 0.0 0.0 0.0 0.0 0.0 0.270 SSE 0.001 0.026 0.134 0.229 0.148 0.056 0.0 0.0 0.0 0.594 S 0.000 0.007 0.037 0.127 0.166 0.487 0.0 0.0 0.0 0.824 SSW 0.0 0.0 0.0 0.0 0.0 0.0 Q Qu 0.0 0.0 0.0 SW 0.000 0.004 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.004 WSW 0.000 0.0 0.005 0 ' 0.0 0.0 0.0 0.0 0.0 0.005 W 0.000 0.0 0.003 0.0 0.0 0.0 0.0 0.0 0.0 0.003 WNW 0.000 0.0 0.001 0.0 0.0 0.0 0.0 0.0 0.0 0.001 NW 0.0 0.0 0.0 0.013 0.0 0.0 0.0 0.0 0.0 0.013 HNW 0.000 0.0 0.028 0.071 0.100 0.0 0.0 0.0 0.0 0.200 SUBTOTAL 0.004 0.081 0 '70 0.873 0.541 0.544 0.0 0.0 0.0 2.611 TOTAL HOURS OF VALID OBSERVATIONS 2103.000 TOTAL HOURS OF GROUND LEVEL RELEASE 230.430 TOTAL HOURS OF STABILITY CLASS P 262.250 TOTAL HOURS OP GROUND LEVEL STABILITY CLASS F 54.920 METEOROLOGICAL FACILITY: MET FACZZ ITY LOCATED 1 ~ 3 KM ESE OF BROWNS PERRY NUCLEAR PLANT STABILITY BASED OH DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND DIRECTION MEASURED AT 10.42 METER QEVEL WZHD SPEED MEASURED AT 10.42 METER LEVEL EPPLUEHT VELOCITY ~ 12.60 M/S DATE PRINTED: 01/22/92 W,4 td 00 I S M NOTE TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS I lb CL 0

0 Ph w 'Og M

wVQ M ~0

SPLIT JOINT PERCENTAGE FREQUENC WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS G (DELTA T > 4.0 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 1 OF 2 GROUND LEVEL RELEASE MODE OCT 1, 91 DEC 31, 91 WIND WIND SPEEDtMPH)

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 0.001 0.0 0.023 0 ~ 038 0.008 0.0 0.0 0.0 0.0 0.069 NNE 0.001 0.004 0.029 0 ~ 092 0.0 0.0 0.0 0.0 0.0 0.125 NE 0.000 0.0 0.001 0.0 0.017 0.0 0.0 0.0 0.0 0.018 ENE 0.000 0.0 0.001 0.0 0.0 0.0 0.0 0.0 0.0 0.001 E 0.000 0.0 0.006 0.008 0.0 0.0 0.0 0.0 0.0 0.014 ESE 0.000 0.002 0.001 0.0 0.0 0.0 0.0 0.0 0.0 0.003 SE 0.001 0.002 0.042 0.034 0.0 0.0 0.0 0.0 o.o 0.079 SSE 0.005 0.047 0.161 0.108 0.019 0.0 0.0 0.0 0.0 0.340 S 0.000 0 ~ 006 0.006 0.0 0.0 0.0 0.0 0.0 0.0 0.012 SSW 0.000 0.000 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.000 SW 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 WSW 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 W 0.0 0.0 0.0 '0. 0 0.0 0.0 0.0 0.0 0.0 0.0 WNW 0.0 0;0 0.0 0.0 0.0 0.0 .0.0 0.0 ~0.0 0.0 NW 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 NNW 0.000 0.0 0.007 0.044 0.009 0.0 0.0 0.0 0.0 0.059 SUBTOTAL 0.008 0.062 0.277 0.324 0 F 052 0.0 0.0 0.0 0.0 0.723 TOTAL HOURS OF VALID OBSERVATIONS 2103.000 TOTAL HOURS OF GROUND LEVEL RELEASE 230.430 TOTAL HOURS OF STABZLZTY CLASS G 66.770 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS G 15.200 METEOROLOGICAL FACZLITY: MET FACILITY LOCATED 1.3 KM ESE OF BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND DIRECTION MEASURED AT 10.42 METER LEVEL WIND SPEED MEASURED AT 10.42 METER LEVEE EFFLUENT VELOCITY ~ 12.60 M/S DATE PRINTED: 01/22/92 00 tD Y NOTE TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS I En&A 0> 0 CL 0

0 H I g 8>

0

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

BROWNS FERRY NUCLEAR PLANT PART 2 OF 2 ELEVATED RELEASE MODE OCT 1, 91 DEC 31, 91 WIND 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 0.0 0.0 0 ' 0.0 0.0 0.0 0.0 0.0 0.0 0.0 NNE 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 NE 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 ENE 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 E 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 ESE 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 SE 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 SSE 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 S 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 SSW 0.0 0.0 0.0 0.0 0 ' 0.0 0.0 0.0 0.0 0.0 SW 0 ' 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 WSW 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 W 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 -0. 0 WNW 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 NW 0.0 0.0 0.0 0.0 0.0 0.0 , 0.0 0.0 0.0 0.0 NNW 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 SUBTOTAL 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 TOTAL HOURS OF VALZD OBSERVATIONS 2103. 000 TOTAL HOURS OF ELEVATED RELEASES 1872.569 TOTAL HOURS OF STABZLITY CLASS A 11. 210 TOTAL HOURS OF EIEVATED STABILITY CLASS A 0.0 METEOROLOGICAL FACILITY: MET FACILITY LOCATED 1.3 KM ESE OF BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 45.30 AND 89.60 METERS WZND DIRECTION MEASURED AT 45.67 METER LEVEL WIND SPEED MEASURED AT 45.67 METER LEVEL EFFLUENT VELOCITY ~ 12.60 M/S DATE PRINTED: 01/22/92 44 tO C

00 lb 'C NOTE: TOTALS AND SUBTOTALS ARE OBTAINED. FROM UNROUNDED NUMBERS vMO> av I

O 0

0 M thr g M '0 w e lo h) w 0

SPLIT JOINT PERCENTAGE FREQUENCI WZND SPEED BY WIND DIRECTION FOR STABILITY CLASS B - i-1. 9 < DELTA T<=-1. 7 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 2 OF 2 ELEVATED RELEASE MODE

~ OCT 1, 91 DEC 31, 91 WIND 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 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 NNE 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 NE 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 ENE 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 E 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 ESE 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 SE 0.0 0.0 0.0 0.095 0.0 0.0 0.0 0.0 0.0 0.095 SSE 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 S 0.0 0.0 0.0 0.0 0.046 0.0 0.0 0.0 0.0 0.046 SSW 0.0 0.0 0.0, 0.0 0.0 0.0 0.0 0.0 0.0 0.0 SW 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 WSW 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 W 0.0 0.0 0.0 0.0 0.0 0.041 0.0 0.0 0.0 0.041 WNW 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 NW 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 NNW 0.0 0 0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 SUBTOTAL 0.0 0.0 0.0 0.095 0.046 0.041 0.0 0.0 0.0 0. 182 TOTAI HOURS OF VALID OBSERVATIONS 2103. 000 TOTAL HOURS OF ELEVATED RELEASES 1872.569 TOTAL HOURS OF STABILITY CLASS B 11.960 TOTAL HOURS OF ELEVATED STABILITY CLASS B 3.830 METEOROLOGICAL FACILITY- MET FACILITY LOCATED 1.3 KM ESE OF BROWNS FERRY NUCLEAR PLANT STABILZTY BASED ON DELTA-T BETWEEN 45.30 AND 89.60 METERS WZND DIRECTION MEASURED AT 45.67 METER.'LEVEL WIND SPEED MEASURED AT 45.67 METER LEVEL EFFLUENT VELOCITY ~ 12.60 M/S DATE PRINTED 01/22/92 00 0 Y I

NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS O 8 0

0 Phr g H

'C) 'O

% Ql 0

SPLIT JOINT PERCENTAGE FREQUENCZ WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS C (-1.7< DELTA T<=-1 ~ 5 C/100 M)

BROWNS PERRY NUCLEAR PLANT PART 2 OF 2 ELEVATED RELEASE MODE OCT 1, 91 DEC 31, 91 WZND 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 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 NNE 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 NE 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 ENE 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 E 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 ESE 0.0 0.0 0.0 0.048 0.0 0.0 0.0 0.0 0.0 0.048 SE 0.0 0.0 0.0 0.095 0.046 0.0 0.0 0.0 0.0 0.141 SSE 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 S 0.0 0.0 0.0 0.0 0.047 0.0 0.0 0.0 0.0 0.047 SSW 0.0 0-. 0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 SW 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 WSW 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 W 0.0 0.0 0.0 0.0 0.046 0.040 0.0 0.034 0.0 0.120 WNW 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 HW 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 NNW 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 SUBTOTAL 0.0 0.0 0.0 0.143 0.138 0.040 0.0 0.034 0.0 0.355 TOTAL HOURS OP VALID OBSERVATIONS 2103.000 TOTAL HOURS OF ELEVATED RELEASES 1872.569 TOTAL HOURS OP STABILITY CLASS C 13.000 TOTAL HOURS OF ELEVATED STABILITY CLASS C 7.470 METEOROLOGICAL FACILITY: MET FACILITY LOCATED 1. 3 KM ESE OP BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DEITA-T BETWEEN 45.30 AND 89.60 METERS WIND DIRECTION MEASURED AT 45.67 METER LEVEL WIND SPEED MEASURED AT 45.67 METER LEVEL EPPLUENT VELOCZTY ~ 12.60 M/S DATE PRINTED: 01/22/92 C

OQ Q ~I NOTE TOTALS AND SUBTOTALS ARE OBTAINED PROM UNROUNDED NUMBERS Ch &

~O0 CL 0

Phr g M Cl h) ~ 0

SPLIT JOINT PERCENTAGE FREQUENCI WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS D (-1.5< DELTA T<~-0.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 2 OP 2 ELEVATED RELEASE MODE OCT li 91 DEC 3li 91 WIND 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 0.0 0.143 0.380 0.411 1.787 0.774 0.0 0.0 3.498 NNE 0.003 0.0 0.143 0.095 0.363 1.285 0.506 0.0 0.0 2.395 NE 0.004 0.048 0.143 0.190 0.319 0.542 0.078 0.0 0.0 1.323 ENE 0.002 0.0 0.095 0.238 0.319 0.296 0.0 0.0 0.0 0.950 E 0.005 0.0 0.238 0.095 0.408 0.418 0.0 0.0 0.0 1.165 ESE 0.012 0.0 0.571 0.808 0.598 0.719 0.0 0.0 0.0 2.708 SE 0.018 0.048 0.856 1.094 0.961 l. 547 0.542 0.227 0. 010 5.303 SSE 0.012 0.143 0.476 0.523 0.229 l. 279 0.964 0.115 0.032 3.772 S 0.011 0.048 0.476 0.380 0.320 0.868 0.849 0.358 0. 011 3.319 SSW 0.005 0.0 0.238 0.190 0.180 0.207 0.154 0.028 0.0 1. 001 SW 0.006 0.143 0.143 0.571 0.189 0.296 0.039 0.0 0.0 1.385 WSW 0.001 0.0 0.048 0.380 0.185 0.454 0.115 0.0 0.0 1.183 W 0.003 0.007 0.0 0.0 0.143 0.333 0.285 0.285 0.142 0.274

l. 194 0.957 0.773 1.004 0.129 0.0 2.669 WNW 0.320 0.010 3.191 NW 0.002 0.048 0.048 0.048 0.320 1.335 0.925 0. 461 0.003 3.189 NNW 0.003 0.0 0.143 0.048 0.454 1.495 0.698 0.122 0.0 2.962 SUBTOTAL 0.095 0.476 4.232 5.611 5.672 14.680 7.420 1.760 0.066 40.011 TOTAL HOURS OF VALID OBSERVATIONS 2103.000 TOTAL HOURS OP ELEVATED RELEASES 1872.569 TOTAL HOURS OF STABILITY CLASS D 904.770 TOTAL HOURS OF ELEVATED STABZI ITY CLASS D 841.450 METEOROLOGICAL FACILITY: MET FACILITY LOCATED 1.3 KM ESE OF BROWNS PERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 45.30 AND 89.60 METERS WIND DZRECTZON MEASURED AT 45.67 METER LEVEL WIND SPEED MEASURED AT 45.67 METER LEVEI EPPLUENT VELOCITY ~ 12.60 M/S DATE PRINTED: 01/22/92 WW ti>

C 00 0 YI NOTE: TOTALS AND SUBTOTALS ARE OBTAZNED PROM UNROUNDED NUMBERS (D C O

0 H M '0g

'4 hJr 0

SPLIT JOINT PERCENTAGE FREQUENCI WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS E (-0.5< DELTA T<= 1.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 2 OF 2 ELEVATED RELEASE MODE OCT li 91 DEC 31'1 WIND WIND SPEED(MPH)

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 0.677 1.470 0. 195 0.0 0.0 2.729 N

NNE 0.006 0.004 0.048 0.0 0.095 0.095 0.238 0.143 0.503 1.536 0.547 0.197 0.039

'.0 0.0 0.0 0.0 2.478

l. 574 NE 0.009 0.0 0.190 0.476 0.313 ENE 0.015 0.048 0.285 0.285 0.186 0.378 0.039 0.0 0.0 1.237 E 0.013 0.0 0.285 0.713 0.186 0.506 0.0 0.0 0.0 1.704 ESE 0.017 0.048 0.333 1.046 0.728 1.529 0.039 0.0 0.0 3.740 SE 0.028 0.0 0.618 0.999 2.133 3.428 l. 155 0.245 0.004 8.609 SSE 0.011 0.0 0.238 0.666 0.960 1.498 1.501 0.637 0.018 5.528 S 0.002 0.048 0.0 0.190 0.460 0.709 0.501 0.097 0.032 2.039 SSW 0.002 0.0 0.048 0.048 0.092 0.205 0.234 0.036 0.0 0.665 SW 0.009 0.0 0.190 0.143 0.047 0.505 0.0 0.038 0.0 0.931 WSW 0.006 0.0 0.143 0.095 0.092 0.214 0.038 0.0 0.0 0.588 W 0.004 0.048 0.048 0.095 0.044 0.421 0.0 0.0 0.0 0.660 WNW 0.002 0.0 0.048 0.048 0.046 0.127 0.0 0.0 0.0 0. 271 NW 0.002 0.0 0.048 0.238 0. 137 0.373 0.077 0.0 0.0 0.875 NNW 0.011 0.048 0.190 0.095 0.324 1.534 0.354 0.0 0.0 2.556 SUBTOTAL 0.143 0.285 2.853 5.516 6.930 14.980 4.369 1.053 0.054 36.182 TOTAL HOURS OF VALID OBSERVATZONS 2103. 000 TOTAL HOURS OF ELEVATED RELEASES 1872.569 TOTAL HOURS OF STABILITY CLASS E 833.040 TOTAL HOURS OF ELEVATED STABZLZTY CLASS E 760.920 METEOROLOGICAL FACILITY: MET FACILITY LOCATED 1.3 KM ESE OF BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 45.30 AND 89.60 METERS WIND DIRECTION MEASURED AT 45.67 METER 4,EVEL WIND SPEED MEASURED AT 45.67 METER LEVEi EFFLUENT VELOCITY ~ 12. 60 M/S DATE PRZNTED: 01/22/92 W W td 00 (D C I

NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS a AQ>

lA lD D O

0 H g

'4 % jO 0

SPLIT JOINT PERCENTAGE PREQVENCI WIND SPEED BY WIND DZRECTZON POR STABZLZTY CLASS P t 1.5< DELTA T<~ 4.0 C/100 M)

BROWNS PERRY NUCLEAR PLANT PART 2 OP 2 ELEVATED RELEASE MODE OCT 1, 91 DEC 31, 91 WIND WIND SPEEDtMPH)

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 0.0 0.0 0.0 0.0 0.047 0. 451 0.039 0.0 0.0 0.537 NNE 0.0 0.0 0.143 0.095 0.141 0.498 0.0 0.0 0.0 0.876 NE 0.0 0.0 0.0 0.238 0.275 0.500 0.0 0.0 0.0 1. 013 ENE 0.0 0.0 0.048 0.238 0.138 0.377 0.078 0.0 0.0 0.878 E 0.0 0.0 0.143 0.143 0.047 0.374 0.0 0.0 0.0 0. 706 ESE 0.0 0.0 0.190 0.285 0.413 0.256 0.0 0.0 0.0 1.145 SE 0.0 0 ~ 143 0.428 0. 713 0.590 0.124 0.0 0.0 0.0 1.997 .

SSE 0.0 0.0 0.143 0.190 0.413 0.424 0.0 0.0 0.0 1.170 S 0.0 0.0 0.095 0.095 0.136 0.127 0.0 0.0 0.0 0.453

.SSW 0.0 0 ' 0.048 0.095 0.0 0.044 0.039 0.0 0.0 ,0. 225 SW 0.0 0.048 0.0 0.0 0.0 0.044 0.0 0.0 0.0 0.091 WSW 0.0 0.0 0.095 0.048 0.045 0.042 0.0 0.0 ,0.0 0.230 W 0.0 0.0 0.143 0 ' 0.092 0.0 0.0 0.0 0.0 0.235 WNW 0.0 0.048 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.048 NW 0.0 0 ' 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 NNW 0.0 0.0 0.0 0.0 0.048 0.169 0.039 0.0 0.0 0.256 SUBTOTAL 0.0 0.238 1.474 2.140 2.382 3.429 0.196 0.0 0.0 9.859 TOTAL HOURS OP VALID OBSERVATIONS 2103.000, TOTAL HOURS OP ELEVATED RELEASES 1872.569 TOTAL HOURS OF STABILITY CLASS P 262.250 TOTAL HOURS OP ELEVATED STABILITY CLASS F 207.330 METEOROLOGZCAL FACILITY- MET FACILZTY LOCATED 1.3 KM ESE OF BROWNS PERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 45 '0 WIND DIRECTION MEASURED AT 45.67 METER LEVEL AND 89 '0 METERS WIND SPEED MEASURED AT 45.67 METER LEVEL EPPLVENT VELOCITY ~ 12.60 M/S DATE PRINTED: 01/22/92 'V 4 X C

00 (D 'C NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NVMBERS o aafL I

A 0

the 'Og M

h)r 0

SPLIT JOINT PERCENTAGE FREQUENCIE WIND SPEED BY WIND DIRECTION FOR STABZLZTY CLASS G {DELTA T > 4 ~ 0 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 2 OF 2 ELEVATED RELEASE MODE OCT 1, 91 - DEC 31, 91 MEND 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 ~ 0 0.0 0.0 0.095 0.0 0.0 0.0 0.0 0.0 0.095 NNE 0.0 0 ' 0.0 0.0 0.046 0.081 0.0 0.0 0.0 0.127 NE 0 ' 0.0 0.0 0.048 0.0 0.043 0.0 0.0 0.0 0.090 ENE 0.0 0.0 0.0 0.0 0.0 0.086 0.0 0 ~ 0 0.0 0.086 E 0.0 0.0 0.0 0.0 0.092 0.083 0~0 0.0 0.0 0.175 ESE 0.0 0.0 0.048 0.048 0.0 0. 131 0.0 0.0 0.0 0.226 SE 0.0 0.048 0 '43 0.333 0.137 0.0 0.0 0.0- 0.0 0.660 SSE 0.0 0.0 0.095 0.285 0.091 0.0 0.0 0.0 0.0 0.471 S 0.0 0.0 0.095 0.143 0.0 0.0 0.0 0.0 0.0 0.238 SSW 0.0 0.0 0.048 0.0 o.o46 0.0 0.0 0.0 0.0 0.093 SW 0.0 0.0 0.048 0.048 0.047 0.0 0.0 0.0 0.0 0.142 WSW 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 W 0.0 0.0 0.048 0.0 0.0 0.0 0.0 0.0 0.0 0.048 WNW 0.0 0.0 0 ' 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0. 0.0 0.0 0' 0.0 0.0 0.0 NNW 0.0 '.0 0.0 0'.0 0.0 0.0 0.0 0.0 0.0 0.0 SUBTOTAL 0.0 O.O48 0.523 0.999 0.459 0.424 0.0 0.0 0.0 2.452 TOTAL HOURS OF VALID OBSERVATIONS 2103.000 TOTAL HOURS OF ELEVATED RELEASES METERS 1872.569 TOTAL HOURS OF STABILITY CLASS G 66.770 TOTAL HOURS OF ELEVATED STABILITY CLASS G 51. 570 METEOROLOGICAL FACILITY: MET FACILITY. LOCATED 1.3 KM ESE OF BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 45 ~ 30 AND 89.60 METERS WIND DIRECTION MEASURED AT 45.67 'LEVEL WZND SPEED MEASURED AT 45.67 METER LEVEL EFFLUENT VELOCITY ~ 12.60 M/S DATE PRINTED: 01/22/92 C

ot>

(D ~II NOTE TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS Ch C>

0 A

0 th w H g h) w O

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

BROWNS FERRY NUCLEAR PLANT OCT 1, 91 - DEC 31, 91'IND WIND SPEED(HPH)

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 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 NNE 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 NE 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 ENE 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0, 0.0 0.0 E 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 ESE 0.0 0.0 0.0 0.0 0 ' 0.0 0.0 0.0 0.0 0.0 SE 0.0 0 ' 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 SSE 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 S 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 SSW 0.0 0 ' 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 SW 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 WSW 0.0 0 ' 0.0 0.0 0.0 0'. 0 0.0 0.0 0.0 0.0 W 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 WNW 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 NW 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 NNW 0.0 0 ' 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 SUBTOTAL 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 TOTAL HOURS OF VALID STABZI ITY OBSERVATIONS 2119 TOTAL HOURS OF STABILITY CLASS A 0 TOTAL HOURS OF VALID WIND DZRECTION-WIND SPEED-STABILITY CLASS A 0 TOTAL HOURS OF VALID WIND DIRECTION.-WIND SPEED-STABILITY OBSERVATIONS 2116 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: MET FACILITY LOCATED 1.3 KM ESE OF BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON LAPSE RATE MEASURED BETWEEN 45.30 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT THE 92.63 METER LEVEL DATE PRINTED: 01/22/92 MEAN WIND SPEED ~ 0.0 MPH C

NOTE: TOTALS AND SUBTOTALS ABOVE ARE OBTAZNED FROM UNROUNDED NUMBERS 00 tD M I

ch& Ol Ch lD O 0

0 H th w g

'C) '0

'4 % fD h) w 0

JOINT PERCENTAGE FREQUENCIES 0 D SPEED BY WIND DIRECTION FOR STABILITY CLASS B (-1 ~ 9< DELTA-T<~-1 7 C/100 M)

BROWNS PERRY NUCLEAR PLANT OCT 1, 91 - DEC 31, 91 WIND 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 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 NNE 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 NE 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 ENE 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 E 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 ESE 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 SE 0.0 0.0 0.0 0.047 0.047 0.0 0.0 0.0 0.0 0.095 SSE 0.0 0.0 0.0 0.0 0.047 0.0. 0.0 0.0 0.0 0.047 S 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 SSW 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 SW 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 WSW 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.047 0.0 0.0 0.047 WNW 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 NW 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 NNW 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 SUBTOTAL 0.0 0.0 0.0 0.047 0.095 0.0 0.047 0.0 0.0 0.189 TOTAL HOURS OP VALID STABILITY OBSERVATIONS 2119 TOTAL HOURS OP STABILITY CLASS B 4 TOTAI HOURS OP VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS B 4 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABZLZTY OBSERVATIONS 2116 TOTAL HOURS CALM 0 METEOROLOGICAL PACILZTY: MET PACILITY LOCATED 1.3 KM ESE OF BROWNS PERRY NUCLEAR PLANT STABILITY BASED ON LAPSE RATE MEASURED BETWEEN 45 '0 WIND SPEED AND DIRECTION MEASURED AT THE 92.63 METER LEVEL AND 89.59 METERS DATE PRINTED: 01/22/92 MEAN WIND SPEED ~ 7.9 MPH NOTE: TOTALS AND SUBTOTALS ABOVE ARE OBTAINED FROM UNROUNDED NUMBERS C 00 tb M I

ChCt Q (D

0 Ph w gH M 'U jll h) w 0

JOINT PERCENTAGE FREQUENCIES 0 SPEED BY WIND DIRECTION FOR STABILITY CLASS C (-1.7< DELTA-T<~-1.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT OCT 1, 91 DEC 31, 91 WIND WIND SPEED(MPH)

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 N 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 NNE 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 NE 0.0 0.0 0.0 0.0 0 ~ 0 0.0 0.0 0.0 0.0 0.0 ENE 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0'.0 E 0.0 0.0 0 ' I 0.0 0.0 0.0 0.0 0.0 0.0 ESE 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.047 SE 0.0 0.0 0.0 0.095 0.047 0.0 0.0 0.0 0.0 0.142 SSE 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 S 0 ' 0.0 0.0 0.0 0.047 0.0 0.0 0.0 0.0 0.047 SSW 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 SW 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 WSW 0.0 0 ' 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 W 0.0 0.0 0.0 0.0 0.047 0.0 0.047 0.0 0.047 0.142 WNW 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 NW 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 NNW 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 SUBTOTAL 0.0 0.0 0.0 0.095 0.142 0.047 0.047 0.0- 0.047 0.378 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2119 TOTAL HOURS OF STABILITY CLASS C 8 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS C 8 TOTAL HOURS OF VALID WIND DZRECTZON-WIND SPEED-STABZLZTY OBSERVATIONS 2116 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: MET FACILITY LOCATED 1.3 KM ESE OF BROWNS FERRY NUCLEAR PLANT STABII ITY BASED ON LAPSE RATE MEASURED BETWEEN 45.30 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT THE 92.63 METER LEVEL DATE PRINTED: 01/22/92 MEAN WIND SPEED sa 9.7 MPH aU 0s 4 W NOTE: TOTALS AND SUBTOTALS ABOVE ARE OBTAZNED FROM UNROUNDED NUMBERS I ID ss,'

ch& Qs O> (D <>

0 0

A sO '<>9 s

'4 'C)

Nr 0

JOINT PERCENTAGE FREQUENCIES D SPEED BY WIND DIRECTION FOR STABILITY CLASS D (-1.5< DELTA-T< -0.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT OCT 1, 91 - DEC 31, 91 WIND WIND SPEED(MPH)

DIRECTION 0. 6-1. 4 1.5-3.4 3.5-5.4 5.5-7.4 7.. 5-12. 4'2. 5-18. 4 18. 5-24. 4 >~24.5 TOTAL N 0.003 0.0 0.047 0.142 0.331 1. 465 1.371 0.378 0.0 3.736 NNE 0.011 0.095 0.095 0.142 0.236 0.992 0.945 0.095 0.0 2.610 NE 0.003 0.0 0.047 0.142 0.236 0.473 0.473 0.0 0.0 1.373 ENE 0.005 0.0 0.095 0.095 0.189 0.425 0.142 0.0 0.0 0.951 E 0.008 0.0 0 ~ 142 0.047 0.142 0.378' 0.189 0.0 0.0 0.906 ESE 0.019 0.095 0.236 0.567 0.473 1.371 0.425 0.095 0.047 3.327 SE 0.038 0.047 0.614 0.851 0.284 1.276 1.560 0.520 0.567 5.756 SSE 0.008 0.047 0;095 0.331 0.284 1.087 1.087 0.331 0.236 3.505 .

S 0.014 0 ' 0.236 0.236 0.189 ,1.040 1.087 0.898 0.142 3.841 SSW 0.003 0.0 0.047 0.236 0.236 0.378 0.189 0.236 0.047 1.373 SW 0.024 0.095 0.331 0.236 0.236 0.284 0.189 0.0 0.0 1.395 WSW 0.011 0.047 0.142 0.189 0. 331 0.236 0.425 0.095 0.0 1.476 W 0.008 0.0 0.142 0.189 0.331 0.378 l. 418 0.614 0.189 3.269 WNW 0.014 0.008 0.047 0.0 0.189 0.142 0.284 0.142 0.284 l. 371 0.945 0.992 0.189 4.314 NW 0.142 1.087 1.229 1.'040 0.189 3.978 NNW 0.014 0.047 0.189 0 '47 0.236 1.654 0.992 0.331 0.047 3.558 SUBTOTAL 0.189 0.520 2.788 3.875 4.159 13.894 12.665 5.624 1.654 45.369 TOTAL HOURS OF VALID STABZLZTY OBSERVATIONS 2119 TOTAL HOURS OF STABILITY CLASS D 962 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS D 960 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABZLZTY OBSERVATIONS 2116 TOTAL HOURS CALM 4 METEOROIOGZCAZ FACZLZTY: MET PACILZTY LOCATED 1.3 KH ESE OF BROWNS PERRY NUCLEAR PLANT STABZLZTY BASED ON LAPSE RATE MEASURED BETWEEN 45 '0 WIND SPEED AND DIRECTION HEASURED AT THE 92.63 HETER LEVEL AND 89-59 HETERS DATE PRINTED: 01/22/92 MEAN WIND SPEED ~ 12.0 MPH U4%

NOTE: TOTALS AND SUBTOTALS ABOVE ARE OBTAINED PROM UNROUNDED NUMBERS 00 (D Y I

MCtQ M lD CL 0, O H

g M '<)

M 'C7 M~O Q)

0 JOINT PERCENTAGE FREQUENCIES STABZLITY CLASS BROWNS E t-0.5<

FERRY NUCLEAR PLANT SPEED BY WIND DIRECTION FOR DELTA-T<~ 1.5 C/100 M)

OCT 1, 91 DEC 31, 91 WI ND SPEED(MPH)

DIRECTION 0.6-1.4 1.5-3.4'IND 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 0.0 0.047 0.047 0.095 0.992 1.323 0.189 0.0 2.697 NNE 0. 0.095 0.0 0.047 0.425 0.709 1.134 0.236 0.0 2.652 NE 006'.009 0.047 0.095 0.095 0.095 0.898 0.520 0.0 0.0 1.757 ENE 0.003 0.0 0.047 0.142 0.189 0.756 0.378 0.0 0.0 1.515 E 0.003 0.047 0.0 0 F 236 0.189 0.473 0.095 0.0 0.0 1.043 ESE 0.003 0.0 0.047 0.236 0.236 1.040 0.803 0.095 0.0 2.460 SE 0.030 0.095 0.378 0.331 0.473 1.701 4.442 1.654 0.142 9.245 SSE 0.009 0.095 0.047 0.236 0.473 1.134 2.741 2.268 0.567 7.570 S 0.012 0.047 0.142 0.142 0.378 l. 512 0.851 0.425 0.520 4.029 SSW 0.0 0.0 0.0 0.189 0.189 0.567 0.662 0.236 0.0 1.843 SW 0.003 0.047 0.0 0.095 0.142 0.236 0.473 0.047 0.0 1.043 WSW 0.009 0.0 0.142 0.095 0.047 0.284 0.189 0.047 0.0 0.812 W 0.0 0.0 0.0 0.047 0.142 0.095 0.331 0.0 0.0 0.614 WNW 0.003 0.047 0.0 0.0 0.047 0.142 0.142 0.0 0.0 0.381 NW 0.0 0.0 0.0 0.047 0.047 0.331 0.189 0.095 0.0 0.709 NNW 0.003 0.0 0.047 0.095 0.142 0.567 1.418 0.425 0.0 2.697 SUBTOTAL 0.095 0.520 0 '92 2.079 3.308 11. 437 15.690 5. 718 l. 229 41.068 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2119 TOTAL HOURS OF STABILITY CLASS 'E 870 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS E 869 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABZLZTY OBSERVATIONS 2116 TOTAL HOURS CALM 2 METEOROLOGICAL FACILITY: MET FACILITY LOCATED 1.3 KM ESE OF BROWNS FERRY NUCLEAR PLANT STABZLITY BASED ON LAPSE RATE MEASURED BETWEEN 45.30 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT THE 92.63 METER LEVEL DATE PRINTED: 01/22/92 MEAN WIND SPEED ~ 13.1 MPH 044 C

NOTE: TOTALS AND SUBTOTAIS ABOVE ARE OBTAINED FROM UNROUNDED NUMBERS OQ 5 Y I

fO O(D C 0

0 H g

M 'O

'V % 0 M~O

JOINT PERCENTAGE FREQUENCIES D SPEED BY WIND DIRECTION FOR STABZLITY CLASS F ( 1.5< DELTA-T<~ 4.0 C/100 M)

BROWNS FERRY NUCLEAR PLANT OCT 1, 91 DEC 31, 91 WIND WIND SPEEDtMPH)

DIRECTION CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7. 5-12. 4'2.5-18. 4 18. 5-24. 4 )~24.5 TOTAL N 0.004 0 0 0.047 0.0 0.0 0.0 0.378 0.0 0.0 0.429 NNE 0.0 0.0 0.0 0.0 0.0 0.236 0.284 0.095 0.0 0.614 NE 0.004 0.0 0.047 0.047 0.0 0.236 0.331 0.095 0.0 0.760 ENE 0.0 0.0 0.0 0.047 0.095 0.473 0.756 0.0 0.0 1.371 E 0.020 0.047 0.189 0.142 0.0 0.236 0.142 0.0 0.0 0.776 ESE 0.008 0.0 0.095 0.095 0.142 0.331 0.378 0.0 0.0 1.048 SE 0.004 0.0 0.047 0.236 0.236 0.614 0.425 0.047 0.0 1.611 SSE 0.0 0.0 0.0 0.0 0.189 0.378 0.331 0:0 0.0 0.898 S 0.0 0.0 0.0 0.095 0.189 0.662 0.425 0.047 0.0 1.418 SSW 0.0 0.0 0.0 0.095 0.189 0.095 0.142 0.047 0.0 0.567 SW 0.004 0.0 0.047 0.047 0.047 0.142 0.047 0.0 0.0 . 0.335 WSW 0.0 0.0 0.0 0.0 0.0 0.0 0.095 0.047 0.0 0.142 W 0.0 0.0 0.0 0.0 0.0 0.095 0.0 0.0 0.0 0.095 WNW 0.004 0.0 0.047 0.047 0.047 0.0 0.0 0.0 0.0 0.146 NW 0.0 0.0 0.0 0.0 0.0 0.095 0.0 0.0 0.0 0.095 NNW 0 ' 0.0 0.0 0.047 0.0 0.0 0.047 0.095 0.0 0.189 SUBTOTAL 0.047 0.047 0.520 0.898 1.134 3.592 3.781 0.473 0.0 10.491 TOTAL HOURS OF VALID STABILITY OBSERVATZONS 2119 TOTAL HOURS OF STABILITY CLASS F 222 TOTAL HOURS OF VALID WIND DIRECTION-WZND SPEED-STABZLZTY CLASS F 222.

TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2116 TOTAL HOURS CALM 1 METEOROLOGICAL FACILITY: MET FACZLITY LOCATED 1.3 KM ESE OF BROWNS FERRY NUCLEAR PLANT STABZLITY BASED ON LAPSE RATE MEASURED BETWEEN 45.30 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT THE 92 ~ 63 METER LEVEL DATE PRINTED: 01/22/92 MEAN WIND SPEED ~ 10.9 MPH C

NOTE: TOTALS AND SUBTOTALS ABOVE ARE OBTAZNED FROM UNROUNDED NUMBERS CO tD YI

~ tD D-0 O

th W g M '0 t4 w 0

JOINT PERCENTAGE FREQUENCIES D SPEED BY WIND DIRECTION FOR STABILITY CLASS G l DELTA T > 4 .0 C/100 M)

BROWNS FERRY NUCLEAR PLANT OCT 1, 91 DEC 31, 91 WIND WIND SPEED(MPH)

DIRECTION 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 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 NNE 0.0 0.0 0.0 0.0 0.0 0.047 0.095 0.047 0.0 0.189 NE 0.0 0.0 0.0 0.0 0.047 0.0 0.0 0.0 0.0 0.047 ENE 0.0 0.0 0.0 0.0 0.0 0.047 0.142 0.0 0.0 0.189 E 0.0 0.0 0.0 0.0 0.047 0.0 0.095 0.0 0.0 0.142 .

ESE 0.0 0.0 0.0 0.0 0.0 0.095 0.0 0.0 0.0 0.095 SE 0.0 0.0 0.0 0.0 0.047 0.095 0.189 0. 0" 0.0 0.331 SSE 0.0 0.047 0.0 0.0 0.0 0.236 0.047 0.0 0.0 0.331 S 0.0 0.0 0.0 0.0 0.047 0.284 0.0 0.0 0.0 0.331 SSW 0.0 0.047 0.0 0.0 0.142 0.095 0.047 0.0 0.0 0.331 SW 0.0 0.0 0.0 0.047 0.0 0.142 0.047 0.0 0.0 0.236 WSW 0.0 -0.0 0.0 0.0 0.0 0.047 0.095 0.0 0.0 0.142 W 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 WNW 0.0 0.0 0.047 0.047 0.047 0.0 0 0 0.0 0.0 0.142 NW 0 ' 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 NNW 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 SUBTOTAL 0.0 0.095 0.047 0.095 0.378 1.087 0.756 0.047 0.0 2.505 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2119 TOTAL HOURS OF STABILITY CLASS G 53 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS G 53 TOTAL HOURS OF VALID WZND DIRECTION-WIND SPEED-STABZLZTY OBSERVATIONS 2116 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: MET FACILITY LOCATED 1.3 KM ESE OF BROWNS FERRY NUCLEAR PLANT STABZLZTY BASED ON LAPSE RATE MEASURED BETWEEN 45.30 AND 89.59 METERS WIND SPEED AND DZRECTZON MEASURED AT THE 92.63 METER LEVEL DATE PRINTED: 01/22/92 MEAN WIND SPEED ~ 10.4 MPH C

NOTE: TOTALS AND SUBTOTALS ABOVE ARE OBTAINED FROM UNROUNDED NUMBERS OQ I

wUQ M (D C4 0

0 9

M '0 h)r 0

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

EFFLUENT AND WASTE DISPOSAL SEMIANNUAL REPORT

EFFLUENT AND WASTE DISPOSAL SEMIANNUAL REPORT

SUMMARY

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

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

Page 1 of 17

EFFLUENT AND WASTE DISPOSAL SEMIANNUAL REPORT SUPPLEMENTAL INFORMATION SECOND HALF 1991 I. Re ulato Limits A. Fission and Activation Gases in Gaseous Effluent:

The release of fission and activation gases is regulated by the dose limits of 10 CFR 50 Appendix I. The air dose; to areas at and beyond the site boundary due to noble gases released in gaseous effluents per unit, shall be limited during any calendar quarter to g 5 millirad (mrad) for gamma radiation and g 10 mrad for beta radiation; and during any calendar year to g 10 mrad for gamma radiation and g 20 mrad for beta radiation.

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

The release of iodines and particulates in gaseous effluent is regulated by 'the dose limits of 10 CFR 50 Appendix I. The dose to a member of the public from radioiodines, radioactive materials in particulate form, and radionuclides other than noble gases with half-lives greater than eight days in gaseous effluent released per unit to areas at and beyond the site boundary shall be limited to any organ during any calendar quarter to g 7.5 millirem (mrem), and during any calendar year to g 15 mrem.

D. Liquid Effluents The release of radioactive liquid effluents is regulated by the dose limits of 10 CFR 50 Appendix I. The doses or dose commitment to a member of the public from radioactive materials in liquid effluents released from each unit to unrestricted areas shall be limited during any calendar quarter to g 1.5 mrem to the total body and < 5 mrem to any organ and during any calendar year to < 3 mrem to the total body and < 10 mrem to any organ.

Page 2 of 17

'FFLUENT 'AND WASTE DISPOSAL SEMIANNUAL REPORT SUPPLEMENTAL INFORMATION SECOND HALF 1991 II. Maximum Permissible Concentrations A. Fission and Activation Gases in Gaseous Effluent:

1. The instantaneous release rate of fission and activation gases is regulated by the dose rate limit of 10 CFR 20 Appendix B. The dose rate at any time to areas at and beyond the site boundary due to noble gases released in gaseous effluents from the site shall be limited to < 500 mrem per year to the total body and

< 3000 mrem per year to the skin.

2. The BFN Offsite Dose Calculation Manual (ODCM) determines the

'maximum noble gas release rate based upon the dose rate limits in II.A.l. The instantaneous noble gas release rates are limited by the following equation:

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

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

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

1. The instantaneous release rate of particulates and iodines is regulated by the dose rate limit of 10 CFR 20 Appendix B. The dose rate at any time to areas at and beyond the site boundary, due to I-131, H-3 and particulates with greater than eight days half-lives released in gaseous effluents from the site, shall be limited to < 1500 mrem per year to any organ.
2. The BFN ODCM determines the maximum particulate and iodine release rate based upon the dose rate limit of II. B and C.l.

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

+ g4<1 2.19 35.7 Q3 = The release rate from the building exhaust vents in pCi per second.

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

Page 3 of 17

EFFLUENT AND WASTE DISPOSAL SEMIANNUAL REPORT SUPPLEMENTAL INFORMATION SECOND HALF 1991 II. Maximum Permissible Concentrations (Continued)

D. Liquid Effluents

1. The concentration of radionuclides in liquid effluents released at any time from the site to unrestricted areas shall be limited to the concentrations specified in 10 CFR 20, Appendix B, Table II, Column 2 for radionuclides other than dissolved or entrained noble gases.
2. For dissolved or entrained noble gases, the concentration shall be limited to 2E-4 pCi per milliliter (ml) total activity.

III. Avera e Ener Not a licable IV. Measurements and A roximations of Total Radioactivit A. Fission and Activation Gases:

1. Noble gases in the building vent and stack gaseous effluent are continuously monitored. The flow rate of the stack is continuously monitored and the building vent effluent flow rates are calculated once a shift based on the configuration of operating exhaust fans. The flow rate data -is consolidated weekly to determine the volume of airborne effluent released from the plant. The noble gas monitor data is consolidated monthly to determine the total curies of noble gases released during the month.
2. Gas grab samples are taken and analyzed monthly to determine the relative noble gas activity concentrations. This information is used to apportion the total curies.of noble gases released among different noble gas radionuclides.
3. The tritium concentration is determined by the analysis of a monthly grab sample for each release point.

B. and C. Iodines and Particulates

l. Iodines and particulates are continuously sampled on impregnated charcoal filters and particulate filters, respectively. The charcoal and particulate samples are replaced at, least weekly and analyzed to determine specific activity concentrations. The specific activity concentrations and vent flow rate data are used weekly to verify that release rate limits were not exceeded. The specific activity concentrations and total volume of gaseous effluent are used on a monthly basis to determine the total curies of each particulate and iodine released during the month.

Page 4 of 17

EFFLUENT AND WASTE DISPOSAL SEMIANNUAL REPORT SUPPLEMENTAL INFORMATION SECOND HALF 1991 IV. Measurements and A roximations of Total Radioactivit Continued

2. The gross alpha concentration is determined by analysis of a monthly

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

D. Liquid Effluents

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

The allowable release rate is calculated for each batch based upon the known dilution flow. The flow rate of the liquid effluent is continuously monitored and the total volume released in each batch

, is determined. The total gamma activity released in each batch is determined by multiplying the radionuclide concentrations by the total volume discharged. The total gamma activity released during the month is then determined by summing the gamma activity content of each batch discharged during the month.

2. The gross alpha and tritium concentrations are measured on a monthly composite sample. The strontium -89 and -90 and iron -55 are measured on a quarterly composite sample.

V. Batch Thi rd Fourth guerter Quarter Unite A. Liquid

1. Number of batches released 92 68 Each
2. Total time period for batch releases 26503 19908 Minutes
3. Maximum time period for a batch release 345 530 Minutes
4. Average time period for batch releases 288 293 Minutes
5. Minimum time period for a batch release 35 5 Minutes
6. Average stream flow during period of release of effluent into a flowing stream 34926 59007 ft 3/S B. Gaseous None Page 5 of 17

EFFLUENT AND WASTE DISPOSAL SEMIANNUAL REPORT SECOND HALF 1991 LIQUID EFFLUENTS SUMMATION OF ALL RELEASES Third Fourth Unit Quarter Quarter / Error.

A. Fission and Activation Products

1. Total Releases Curies 3.08E-01 5.34E-Ol
2. Average Diluted Concentration Released During Period pCi/ml 5.81E-09 1.18E-OS
3. Percent of Applicable Limit (1.00E-07 pCi/ml) 5.81E+00 1.18E+01 B. Tritium
1. Total Releases Curies 1.51E+00 4.16E+00
2. Average Diluted Concentration Released During Period , pCi/ml 2.85E-OS 9.18E-08 t
3. Percent of Applicable Limit (3E-03 NCi/ml) 9.50E-04 3.06E-03 C. Dissolved and Entrained Noble Gases
1. Total Releases Curies 6.50E-02 8.52E-02
2. Average Diluted Concentration Released During Period pCi/ml 1.23E-09 1.88E-09
3. Percent of Applicable Limit (2.00E-04 pCi/ml) 6.13E-04 9.40E-04 D. Gross Alpha Radioactivity
1. Total Releases Curies
2. Average Diluted Concentration Released During Period pCi/ml ND ND E. Volume of Liquid Waste to Discharge Canal (Before dilution) Liters 1.05E+07 7.98E+06 3 F. Volume of Dilution Water for Period Liters 5.30E+10 4.53E+10 10 G. Total CCW flow for Six Months 500.9 gigagallons Includes Xe-133, Xe-135, and others Page 6 of 17

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

~isoto e Third Quarter Fourth Quarter (Required by Regulation (REG) Guide 1.21) Unit Curies Unit Curies

1. Cr-51 1.61E-03 4.02E-02
2. Mn-54 1.50E-03 1.26E-02
3. Co-58 2.25E-03 2.10E-02
4. Fe-59 ND
5. Co-60 1.75E-02 3.31E-02
6. Zn-65 2.14E-02
7. Nb-95
8. Zr-95
9. Mo-Tc-99m 8.55E-03 3.62E-02
10. I-131 8.77E-03 1.17E-02 ll. Xe-133 4.65E-02 4.95E-02
12. Cs-134 1.20E-02 3.44E-03
13. Xe-135 1.77E-02 3.47E-02
14. Cs-137 1.10E-01 5.58E-02
15. Ba-140 2.93E-04 4.19E-03
16. La-140 9.15E-04
17. Ce-141 ND
18. Sr-89 ND
19. Sr-90 Page 7 of 17

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

~Isoto e Third Quarter Fourth Quarter (Not Required by Regulation (REG) Guide 1.21) Unit Curies Unit Curies

1. Fe-55 ND
2. Na-24 5.90E-02 1.69E-01
3. I-133 1.99E-02 ND
4. Xe-133m 9.63E-04 1.07E-03
5. I-135 1.45E-03 4.41E-03
6. Y-91m 5.20E-06 2.64E-05
7. Sb-125 5.99E-05 ND
8. I-132 7.34E-06 3.28E-05
9. Xe-135m 5.85E-08 3.75E-09
10. Mn-56 3.05E-04
11. Sr-91 1.57E-03
12. Sr-92 1.30E-04
13. I-133 3.21E-02
14. Np-239 3.66E-04 Page 8 of 17

EFFLUENT AND WASTE DISPOSAL SEMIANNUAL REPORT SECOND HALF 19911 GASEOUS EFFLUENTS SUMMATION OF ALL RELEASES Third Fourth Summation of All Releases Unit Quarter Quarter  % Error A. Fission and Activation Gases

1. Total Releases Curies 1.28E+03 7.73E+02 45
2. Average Release Rate for Period pCi/sec 1.63E+02 9.83E+01
3. Percent of Technical Specification (TS) limit2 1.88E-02 1.00E-02 B. Iodines
1. Total Iodine-131 Ci 4.00E-02 2.69E-03 36
2. Average Release Rate for Period pCi/sec 5.09E-03 3.42E-04
3. Percent of TS limit 1.83E-01 6.52E-03 C. Particulates
1. Particulates with half-lives

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

2. Average release rate for period pCi/sec 2.14E-03 2.56E-04
3. Percent of TS limit 9.43E-02 7.80E-03
4. Gross alpha radioactivity Ci 2.12E-06 D. Tritium
1. Total release Ci 8.09E-01 1.76E+00 21
2. Average release rate for period pCi/sec 1.03E-Ol 2.24E-Ol
3. Percent of TS limit 4.39E+00 9.73E+00
4. Ground level release Ci 7.52E-01 1.09E+00
5. Elevated release Ci 5.70E-02 9.10E-02 Reporting period 189 days.

The dose rate limit for Noble gases shall be < 500 mrem per year to the total body and < 3000 mrem per year to the skin and the dose rate limit for I-131, H-3, and particulates with g eight day half-lives shall be

< 1500 mrem per year to any organ.

Page 9 of 17

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

1. Fission Gases Krypton-85m Ci 2.60E+02 2.32E+02 Krypton-85 Ci ND Krypton-87 Ci 7.04E+01 ND Krypton-88 Ci 2.91E+02 2.10E+02 Xenon-133 Ci 2.31E+02 3.19E+02 Xenon-135m Ci Xenon-135 Ci 1.41E+02 6.72E+00 Xenon-138 Ci ND Others (specify)

Ar-41 Ci 7.70E+01 ND Total for Period Ci 1.07E+03 7.68E+02

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

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

3. Particulates Sr-89 1 Ci ND 3.72E-05 Sr-90 1 Ci ND 1.11E-07 Cs-134 Ci Cs-137 Ci ND 5.02E-05 Ba-140 Ci 4.24E-04 3.09E-04 La-140 Ci 2.17E-04 2.99E-04 Others (specify)

Cr-51 Ci 7.60E-05 Cs-138 Ci 2.45E-01 Ba-139 Ci 3.40E-01 Zn-69m Ci 1.00E-04 Sr-91 Ci 4.94E-03 Total for Period Ci 6.41E-04 5.91E-01

4. Tritium Ci 5.70E-02 9.10E-02 Predicted estimation of releases.

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

Page ll of 17

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

1. Fission Gases Krypton-85m Ci ND Krypton=85 Ci ND Krypton-87 Ci Krypton-88 Ci Xenon-133 7.64E+01 4.89E+00 Xenon-135m Ci Xenon-135 Ci 1.34E+02 ND Xenon-138 Ci Others (specify)

Total for Period Ci 2.10E+02 4.89E+00

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

EFFLUENT AND WASTE DISPOSAL SEMIANNUAL REPORT SECOND HALF 1991 e

GASEOUS EFFLUENTS GROUND LEVEL RELEASE Third Fourth Unit guarter guarder

3. Particulates Sr-89 1 Ci ND 4. 80E-06 Sr-90 1 Ci ND ND Cs-134 Ci 7.89E-05 Cs-137 Ci 1.25E-02 7.15E-05 Ba-140 Ci 1.02E-03 1.20E-04 La-140 Ci 7.24E-04 Others (specify)

Cr-51 Ci 8.25E-04 5.55E-04 Co-58 Ci 7.34E-05 5.40E-05 Co-60 Ci 9.98E-04 2.35E-04 Mo/Tc-99m Ci ND 5.20E-04 Ce-144 Ci ND 2.87E-05 Zn-65 Ci ND 1.42E-04 Mn-54 Ci ND 2.82E-05 Ba-139 Ci ND 8.97E-03 Na-24 Ci ND 1.12E-02 Total for Period Ci 1.62E-02 2.19E-02

4. Tritium Ci 7.52E-01 1.09E+00 Predicted estimation of releases.

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

Page 13 of 17

EFFLUENT AND WASTE DISPOSAL SEMIANNUAL REPORT SECOND HALF 1991 SOLID WASTE AND IRRADIATED FUEL SHIPMENTS A. Solid Waste Shipped Offsite For Burial Or Disposal (Not Irradiated Fuel)

1. Type of Waste Units Amount Error  %
a. Spent resins, filter m3 8.17E+01 sludges, evaporator Ci 1.00E+02 1.50E+Ol bottoms, etc.
  • b. Dry compressible waste m3 6.42E+Ol contaminated equip., etc. Ci 5.43E+00 1.50E+01
c. Irradiated components, m3 4.85E+00 control rods,'etc. Ci 3.34E+04 1.50E+01
d. Other m3 O.OOE+00 Ci O.OOE+00 N/A Dry compressible waste shipped from processor to the burial ground:

~~E )1 m3, ~13E 00 Gi. These numbers are included in b.

2 ~ Estimate of major nuclide composition (by waste type)

a. Spent resins, filter sludge, evaporator bottoms, etc.

Nuclide Percenta e Ci

l. Iron 55 (2) 3.09E+00 3.10E+00
2. Cobalt-60 (1) 2.61E+01 2.60E+01
3. Cesium-134 (1) 6.39E+00 6.40E+00
4. Cesium-137 (1) 4.90E+Ol 4.91E+Ol
5. Nickel-63 (1) 1.51E+Ol 1.51E+01
6. Other Nuclides (2) 3.00E-01 (1) Measured (2) Calculated Page 14 of 17

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

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

2. Estimate of mijor nuclide composition (by waste type) (Continued)
b. Dry compressible waste, contaminated equipment, etc.

Nuclide Percenta e

1. Iron-55 (2) 3.10E+Ol 1.68E+00
2. Cobalt-, 60 (2) 3.60E+01 1.91E+00
3. Nickel-63 (2) 8.26E+00 4.39E-01
4. Zinc-65 (2) 2.39E+00 1.27E-01
5. Silver-110M (2) 1.05E+00 5.58E-02
6. Carbon-14 (2) 1.21E+00 6.41E-02
7. Zirconium-95 (2) 7.45E-Ol 4.01E-02
8. Cesium-134 (2) 1.28E+00 6.82E-02
9. Cesium-137 (2) 8.29E+00 4.41E-01
10. Cerium-141 (2) 1.53E+00 8.15E-02 ll. Strontium-89 (2) 1.45E+00 7.69E-02
12. Tritium-3 (2) 2.82E+00 1.50E-01
13. Antimony-125 (2) 1.53E-01 8.16E-03
14. Other Nuclides (2) 3.31E+00 1.76E-01 (1) Measured (2) Calculated Page 15 of 17

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

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

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

(Continued) c~ Irradiated components, control rods, etc.

Nuclide Percenta e Ci

1. Iron-55 (2) 2.67E+Ol 8.95E+03
2. Cobalt-60 (2) 6.42E+01 2.15E+04
3. Nickel-63 (2), 8.75E+00 2.93E+03
4. Other Nuclides (2) 1.20E+02 (1) Measured (2) Calculated 0 3. Solid waste disposition Number of Mode of

~Shi ments Trans ortation Destination 18 Sole Use Truck Barnwell, SC 14 Sole Use Truck Quadrex, Oakridge, TN B. Irradiated Fuel Disposition Number of Mode of

~Shi ments Trans ortation Destination NONE N/A N/A Page 16 of 17

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

C. Description of Shipments Number o' Type Type Number of Container Type

~Shi ments Container ~uantft Containers Volume Waste 14 Strong A-LSA See Note See Note DAW Tight Container (STC)

High A-LSA 5.83m3 Dewatered Integrity Resin Container (HIC)

High B-LSA 5.83m3 Dewatered Integrity Resin Contianer (HIC)

Steel llBll 1.6m3 Irradiated Liner Hardware Strong A-LSA 7.9m3 DAW Tight Container (STC)

Solidification agents used: None Absorbents used: None NOTE: 14 shipments to waste processor contained the following:

Type of Number of Volume Each

~Packa e ~Packs es 40'ealand (STC) 72.50 "FR" Box (STC) 10 06.40 "B" Box (STC). 02.66 "Jackson Jordan" 02.66 Box (STC)

"7A/55 Gallon" 40 00.21 Drums (STC)

Page 17 of 17

ENCLOSURE 3 TENNESSEE VALLEY AUTHORITY SEMIANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT BROWNS FERRY NUCLEAR PLANT (BFN)

INOPERABLE RADIOLOGICAL EFFLUENT INSTRUMENTATION REPORT

ENCLOSURE 3 INOPERABLE RADIOLOGICAL EFFLUENT INSTRUMENTATION REPORT This report is to comply with Browns Ferry Nuclear Plant Technical Specifications (TSs), Section 3.2.D.2 and 3.2.K.2. TS Sections 3.2.D.2 and 3.2.K.2 require the exertion of best efforts to return inoperable radiological effluent monitoring instrumentation to an operable status within 30 days.

Failure to return the inoperable instruments to an operable status requires a description in the next Semiannual Radioactive Effluent Release Report.

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

The Effluent Monitors, which have been placed in "out-of-service" status with their effluent streams isolated, are not applicable for this report.

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

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

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

I e

ENCLOSURE 4 e BFN Technical Specification 6.12.2 requires that changes to the Offsite Dose Calculation Manual (ODCM) be submitted to the commission with the semiannual Radioactive Effluent Release Report for the period in which the changes were made. This report covers the period between July through December 1991.

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

. ~

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