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       .                          a        m                        .
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y      p.
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                                           =s    H t! L P I N'G  U Li t L O A FR K A tV G A Q
                                           =s    H t! L P I N'G  U Li t L O A FR K A tV G A Q
'
                                   !<1 b                                                  8004300 D G ARK ANS AS POWER G LIGHT COMPANY DTH & LOUIS 8AN A DTHEETS LIT TLE ROC'K. AAK?"'5AS 722o3. (5 oil 372-4311 October 14, 1971
                                   !<1 b                                                  8004300 D G
              -
ARK ANS AS POWER G LIGHT COMPANY DTH & LOUIS 8AN A DTHEETS LIT TLE ROC'K. AAK?"'5AS 722o3. (5 oil 372-4311 October 14, 1971
                                                  .
                                                                                                   /#                  41 Ac.'&        , . ,
                                                                                                   /#                  41 Ac.'&        , . ,
ob
ob Mr. Lester Rogers, Director Division of Radiological and                                                -
                                                                                                                                    -
Mr. Lester Rogers, Director Division of Radiological and                                                -
                                                                                                $                      -
                                                                                                                                 -4
                                                                                                                                 -4
                                                                                                                                 ~
                                                                                                                                 ~
Environmental Protection                                                        DCT101971 -                -
Environmental Protection                                                        DCT101971 -                -
U. S. Atomic Energy Coc: mission                                              g. g. .,, f ..; .. n .,,
U. S. Atomic Energy Coc: mission                                              g. g. .,, f ..; .. n .,,
                                                                                                                                -
8 tu mg Washington, D. C.        205h5                                                        d?j;i[,
8
                                                                                                              ,
tu mg Washington, D. C.        205h5                                                        d?j;i[,


==SUBJECT:==
==SUBJECT:==
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releases: Tables C and D.                                                                                      l
releases: Tables C and D.                                                                                      l
: 9. Ci-Sec/M3  for all the above: Tables A, B, C and D.
: 9. Ci-Sec/M3  for all the above: Tables A, B, C and D.
                                                .
                  -
                                                                                                                              '
                                                        -
                                                                                                                          .
                                                                                                                             *bE0E TAX P AYING. INVE STOA OWNEO              MEMBER M890LE SOUTH UTILITIES SYSTEM
                                                                                                                             *bE0E TAX P AYING. INVE STOA OWNEO              MEMBER M890LE SOUTH UTILITIES SYSTEM
  .
        '.'
    .      .
      ,
: c.        .
: c.        .
                                                                  .
                                                          .    .
10.
10.
Maximum Unit        expected 1: Table    E. releases and maximum expected releases per event for      .
Maximum Unit        expected 1: Table    E. releases and maximum expected releases per event for      .
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Annual average and time of release at Exclusion Distance for expected releases of Unit 1: Table E.                                maximum 13.
Annual average and time of release at Exclusion Distance for expected releases of Unit 1: Table E.                                maximum 13.
Annual average and time of release at Exclusion Distance for expected releases of Unit 1. Table F.                                maximum Assumptions used for each table are listed below the Table. In addition to these, the follovipg general bases were used te evaluate the vacte volumes generated:
Annual average and time of release at Exclusion Distance for expected releases of Unit 1. Table F.                                maximum Assumptions used for each table are listed below the Table. In addition to these, the follovipg general bases were used te evaluate the vacte volumes generated:
                                      '
1.
1.
Maximum Design Releases for Unit 1 - Based on operating cycle listed in Unit 1 FSAR, Section ll, Page 11.1, the 625,36Dgallons of vaste produced prior to processing in the vaste system of Unit 1 is assumed to be at the maximum Table 11-5 1% failed fuel concentration listed in the Unit 1 FSAR, Page 11-27, 2.
Maximum Design Releases for Unit 1 - Based on operating cycle listed in Unit 1 FSAR, Section ll, Page 11.1, the 625,36Dgallons of vaste produced prior to processing in the vaste system of Unit 1 is assumed to be at the maximum Table 11-5 1% failed fuel concentration listed in the Unit 1 FSAR, Page 11-27, 2.
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Mnximum Expected Releases for Unit 1 - Assumes two cold startups from refueling 310 days. concentration The 3,70,000 per year and operation of plant at 2568 MWt for assumed to be at average 1% failed fuel concentrations.                  gallons of vaste These average concentrations were obtained by calculating average interval concentrations using Table 11-5 in the Unit 1 FSAR and then, using interval bleed rate data, averaging these concentrations over the vaste volumes generated as a result of reactor coolant system deboration.
Mnximum Expected Releases for Unit 1 - Assumes two cold startups from refueling 310 days. concentration The 3,70,000 per year and operation of plant at 2568 MWt for assumed to be at average 1% failed fuel concentrations.                  gallons of vaste These average concentrations were obtained by calculating average interval concentrations using Table 11-5 in the Unit 1 FSAR and then, using interval bleed rate data, averaging these concentrations over the vaste volumes generated as a result of reactor coolant system deboration.
h.
h.
Maximum on          Expected Releases the degasification  of 780,000  for Unit 2 - Gaseous vaste quantities are based D; 780,000 gallons is the                gallons of vaste stated in Tables B and ating data.                    expected volume of bleed vastes based on oper-This vaste in assumed to be at an average 1% failed fuel con-
Maximum on          Expected Releases the degasification  of 780,000  for Unit 2 - Gaseous vaste quantities are based D; 780,000 gallons is the                gallons of vaste stated in Tables B and ating data.                    expected volume of bleed vastes based on oper-This vaste in assumed to be at an average 1% failed fuel con-of the isotope removed from the reactor coolant system ac postulated    cycle discussed volume produced      in the cycle.in 2 above and dividing by the total vaste Although the methods used for calculating average coolant concentrations Kr85) from both units , as expected, agree quite vell. differ signif is postulated for evaluating expected releases, the quantities dischargedNo ma from two plants of similar power output and postulated fuel failure should be the same, since the core can only generate so much of an isotope in a T
            .
of the isotope removed from the reactor coolant system ac postulated    cycle discussed volume produced      in the cycle.in 2 above and dividing by the total vaste Although the methods used for calculating average coolant concentrations Kr85) from both units , as expected, agree quite vell. differ signif is postulated for evaluating expected releases, the quantities dischargedNo ma
-
from two plants of similar power output and postulated fuel failure should be the same, since the core can only generate so much of an isotope in a
                                                                                                              .
T
                                                                                                             '1
                                                                                                             '1


          ' * ':
s                                                      .
s                                                      .
            ,    ,
                                                              -
3-
3-
         .              given~ operating cycle.      The values for Kr85 in the attached tables differ significantly due to differences in the values as umed for the escape rate coefficients (6.5 x 10-0 for Unit 2 vs. 1.0 x 10- for Unit 1), and in the time and operation that the postulated fuel failure occurs. Unit 1 estimates that the 1% fuel failure occurs at the beginning of the third core cycle in the remaining first cycle fuel, whereas Unit 2 assumes 1% fuel failure from
         .              given~ operating cycle.      The values for Kr85 in the attached tables differ significantly due to differences in the values as umed for the escape rate coefficients (6.5 x 10-0 for Unit 2 vs. 1.0 x 10- for Unit 1), and in the time and operation that the postulated fuel failure occurs. Unit 1 estimates that the 1% fuel failure occurs at the beginning of the third core cycle in the remaining first cycle fuel, whereas Unit 2 assumes 1% fuel failure from the start of operation.
                                                                                                        '
the start of operation.
5    Actual Expected Releases for Unit 1 - Similar to 3 above, except that .1%
5    Actual Expected Releases for Unit 1 - Similar to 3 above, except that .1%
failed fuel is postulated. Average .1% failed fuel concentrations were obtained by assuming that fuel failure is proportional to the average reactor coolant concentration, i.e. , .1% failed fuel concentration = 1/10 (1% failed fuel concentration.)
failed fuel is postulated. Average .1% failed fuel concentrations were obtained by assuming that fuel failure is proportional to the average reactor coolant concentration, i.e. , .1% failed fuel concentration = 1/10 (1% failed fuel concentration.)
: 6. Actual Expected Releases for Unit 2 - Similar to h, except that .1% failed fuel is postulated, where .1% concentration = 1/10 (1% failed fuel concen-tration.)      -
: 6. Actual Expected Releases for Unit 2 - Similar to h, except that .1% failed fuel is postulated, where .1% concentration = 1/10 (1% failed fuel concen-tration.)      -
                                                      .
All airborne concentrations were calculaged at ghe Exclusion Distance of 10h6 M using the annual average X/Q = 2.1 x 10- sec/m . This value is valid for calculation of time of release concentrations since sufficient flexibility is available for system operation to ensure that at least annual average meteoro-logical conditions exist prior to discharge. Concentrations of the restricted area boundary of Th6 M vere not calculated but may be easily determined by multiplying the Exclusion Distance concentrations by 1.190 to account for the difference in X/Q at the shorter distance.
All airborne concentrations were calculaged at ghe Exclusion Distance of 10h6 M using the annual average X/Q = 2.1 x 10- sec/m . This value is valid for calculation of time of release concentrations since sufficient flexibility is available for system operation to ensure that at least annual average meteoro-logical conditions exist prior to discharge. Concentrations of the restricted area boundary of Th6 M vere not calculated but may be easily determined by multiplying the Exclusion Distance concentrations by 1.190 to account for the difference in X/Q at the shorter distance.
If you have any questions concerning this information, please contact us.
If you have any questions concerning this information, please contact us.
* Very truly yours,
Very truly yours,
_
                                                       @l2N%
                                                       @l2N%
                                                     --.J. D. Phillips Vice President
                                                     --.J. D. Phillips Vice President O
                                                                  .
A        a l
O A        a l
                                              .
                                                                                                          .
4 e                                                .
4 e                                                .
  '
..
                                      -
i
i


__ -
STATE OF ARKANSAS COUNTY OF JEFFERSON SUBSCRIBED AND SWORN TO before me, a Notary Public in and for the County and State above named, this 18th day of            October  , 1971.
                  *
          .
                                                                *
                      '
                        <
                    .
      -        .                                                          . .
              ,
            .      .                                            ,
    ,                                                                                                      .
                                                                                                              .
                                                          .
                                                                    .
STATE OF ARKANSAS COUNTY OF JEFFERSON
                                                    ..
                                                                .
SUBSCRIBED AND SWORN TO before me, a Notary Public in and for the County and State above named, this 18th day of            October  , 1971.
v        Mr 3
v        Mr 3
                                                       -                          Notary Public
                                                       -                          Notary Public My Commission Expires:
                                                        .
_
                          .
                                                                            .          .
                                          ,
      -
My Commission Expires:
January 2, 1973                                        .
January 2, 1973                                        .
W h
W h
d e
d e
't
't a:
                                                          '
  .
a:
                            .                                                                              %
                                                                      *                                        '
                              .
* _ _ - .


4
4 TABLE A MAXIMUM DESIGN AND ACTUAL EXPECTED YEARLY AVERAGE EXCLUSION DISTANCE CONCENTRATIONS FOR UNIT 1 (3)                (h)                                      (6)
                                      .
                                                                                                                            .
_
                                                                                                                                '
                                                                                                                                  .
                                                                                                                                            -
                                                                                                                      .
                                                                                                                                      ,
                                                                                                                                        '
                                                    .
      -
TABLE A MAXIMUM DESIGN AND ACTUAL EXPECTED YEARLY AVERAGE EXCLUSION DISTANCE CONCENTRATIONS FOR UNIT 1 (3)                (h)                                      (6)
(1)                                                      Actual            (5)                      Actual Max Design          (2)                  Max Design          Expected        Actual                    Expected-Reactor    , Max Design                  Exclusion        Reactor        Expected                    Exclusion Coolant Cone      Annual C1  Ci-See      Distance Cone      Coolant Conc  ; Annual Ci      Ci-See  Distence C ""
(1)                                                      Actual            (5)                      Actual Max Design          (2)                  Max Design          Expected        Actual                    Expected-Reactor    , Max Design                  Exclusion        Reactor        Expected                    Exclusion Coolant Cone      Annual C1  Ci-See      Distance Cone      Coolant Conc  ; Annual Ci      Ci-See  Distence C ""
In";t+pe      (uCi M )        Released    MJ            (uCi/M3 )        (uCi/ml )      Released          M3              3 (uCi/M-)
In";t+pe      (uCi M )        Released    MJ            (uCi/M3 )        (uCi/ml )      Released          M3              3 (uCi/M-)
* Kr 85          98            2.30no k  h.83no-2        1.55no-3              .h91        68h        1.h 36no-3    4.62no-5
Kr 85          98            2.30no k  h.83no-2        1.55no-3              .h91        68h        1.h 36no-3    4.62no-5 Xa 131m        2.0            835      1.75no 3        5.6hno-5              .1ho  ,      33.9    7.12 no-5      2.28no-6 Xe 133m        2 70              . 765 1.61no -6      5.15no-8              .232              .039 8.19 no-8      2.62no-9 Xa 133      2h3              1.09n00  2.29no-2        7.36n0-4          19.12            509        1.06 no-3      3.h2no-5 (1) Maximum 1% failed fuel. concentration.
                                                      '
Xa 131m        2.0            835      1.75no 3        5.6hno-5              .1ho  ,      33.9    7.12 no-5      2.28no-6 Xe 133m        2 70              . 765 1.61no -6      5.15no-8              .232              .039 8.19 no-8      2.62no-9 Xa 133      2h3              1.09n00  2.29no-2        7.36n0-4          19.12            509        1.06 no-3      3.h2no-5
                                                                                                                                    .
                                                                                                      .
(1) Maximum 1% failed fuel. concentration.
(2) Based on complete degasification of 625,360 ganons of bleed vastes and 30 day decay in vaste gas decay tanks.
(2) Based on complete degasification of 625,360 ganons of bleed vastes and 30 day decay in vaste gas decay tanks.
(3) Yearly average concentration based on X/Q = 2.1no-6 sec/M3 ,
(3) Yearly average concentration based on X/Q = 2.1no-6 sec/M3 ,
Line 190: Line 98:
o e
o e


q
q g..
                                                                                                                          .        - -
g..
                                                                                                                                        -
                                                                                                                                  .
                                                                                                                                    .
        .
                                                                          '
L                                                                ~
L                                                                ~
TABLE B
TABLE B
                                                                                                                                           )
                                                                                                                                           )
MAXIMUM DESIGN AND ACTUAL EXPECTED YEARLY AVERAGE, EXCLUSION DISTANCE CONCENTRATIONS FOR UNIT 2
MAXIMUM DESIGN AND ACTUAL EXPECTED YEARLY AVERAGE, EXCLUSION DISTANCE CONCENTRATIONS FOR UNIT 2 (1)                                                      (4)                                      (6)
                                                                                              '                                          .
(1)                                                      (4)                                      (6)
                                      .                  .
(3)            Actual        (5)
(3)            Actual        (5)
Max Design        .(2)                  Max Design          Expected Actual-
Max Design        .(2)                  Max Design          Expected Actual-Reactor    . Max Design                                                  Actual                    Expected-
              -
Reactor    . Max Design                                                  Actual                    Expected-
                                                       ,    Exclusion          Reactor      Expected Coolant Cone    Annual C1    Ci-See  '
                                                       ,    Exclusion          Reactor      Expected Coolant Cone    Annual C1    Ci-See  '
Distance Cone                                                Exclusion Inntope      (uCi/nl)                                          3        Coolant Cone
Distance Cone                                                Exclusion Inntope      (uCi/nl)                                          3        Coolant Cone
Line 222: Line 118:
e
e


                                                                                                                              .
                                                                                                                                        '
                                    ,
                                    .
                                                                                                                                          .
      .                                                                                                                            .
TABLE C UNIT 1 MAXIMUM DESIGN AND ACTUAL EXPECTED EXCLUSION  _
TABLE C UNIT 1 MAXIMUM DESIGN AND ACTUAL EXPECTED EXCLUSION  _
DISTANCE CONCENTRATIONS AT TIME OF RELEASE OF SINGLE GAS TANK CONTENTS
DISTANCE CONCENTRATIONS AT TIME OF RELEASE OF SINGLE GAS TANK CONTENTS (1)                                                              (5)
                                                                                                '
(1)                                                              (5)
Max Design                                          (h)          Actual                                      (8)
Max Design                                          (h)          Actual                                      (8)
(2)                        Max Design
(2)                        Max Design (6)                        Actual Reactor      Max Design Expected    Actual Coolant Cone (3)          Exclusion        Reactor                                Expected Ci/ Tank        Ci-Sec                                        Expected        (7)
                                                                              .
(6)                        Actual Reactor      Max Design
                                                            .
Expected    Actual
* Coolant Cone (3)          Exclusion        Reactor                                Expected Ci/ Tank        Ci-Sec                                        Expected        (7)
Icotope          (uCi/ml)      Discharged                    Distance, Cone    Coolant Cone                              Exclusion M3-                                          Ci/ Tank      C 4 -ht (uC1/M3 )        (uCi/ml)    Discharge                Distance Con M3        (uCi/f43 )
Icotope          (uCi/ml)      Discharged                    Distance, Cone    Coolant Cone                              Exclusion M3-                                          Ci/ Tank      C 4 -ht (uC1/M3 )        (uCi/ml)    Discharge                Distance Con M3        (uCi/f43 )
Kr 85              9.8              2875      6.0hno-3        2.33no-2            .491        136.8    2.87X10 h    9 97X10-3 Xa 131m            2.0              104      2.18no-h        8.42x10-h          .1ho            6.78  1.h2X10-5    h.93n0-U X2 133m            2 70                  .095 1 99n0-I        7.71no-7            .232 Xe 133
Kr 85              9.8              2875      6.0hno-3        2.33no-2            .491        136.8    2.87X10 h    9 97X10-3 Xa 131m            2.0              104      2.18no-h        8.42x10-h          .1ho            6.78  1.h2X10-5    h.93n0-U X2 133m            2 70                  .095 1 99n0-I        7.71no-7            .232 Xe 133
                                                                 '                                      .0078 1.6hno-8    5.69X10-7 2h3                1362 5      2.86X10-3        1.10no-2        '19 12          101.8      2.1hX10-h    7.hino-3
                                                                 '                                      .0078 1.6hno-8    5.69X10-7 2h3                1362 5      2.86X10-3        1.10no-2        '19 12          101.8      2.1hX10-h    7.hino-3 (1) Maximum 1% failed fuel concentration.
_
(1) Maximum 1% failed fuel concentration.
(2) Based on generation of 19,h00 Ft.3 of gas per cycle, 8 tank releases per year, 30-day decay.
(2) Based on generation of 19,h00 Ft.3 of gas per cycle, 8 tank releases per year, 30-day decay.
(3) Based on annual average K/Q = 2.1X10-6              3 conditions.                                sec/M , since tank releases may be scheduled to conform with average (h) Based on 3-day tank release & X/Q = 2.1X10-6          sec/M 3, (5)    .1% failed fuel average cycle concentration.
(3) Based on annual average K/Q = 2.1X10-6              3 conditions.                                sec/M , since tank releases may be scheduled to conform with average (h) Based on 3-day tank release & X/Q = 2.1X10-6          sec/M 3, (5)    .1% failed fuel average cycle concentration.
(6) Based on generation of 12,270 Ft.3                                                                                  -
(6) Based on generation of 12,270 Ft.3                                                                                  -
of gas per cycle, 5 tank releases per year, 30-day decay.
of gas per cycle, 5 tank releases per year, 30-day decay.
(T)    Based on annual average X/q = 2.1X10-6 sec/M3
(T)    Based on annual average X/q = 2.1X10-6 sec/M3 (8) Based _on_8_.ho_ua Smrah                                                                                                        _
                                                                                                            .
(8) Based _on_8_.ho_ua Smrah                                                                                                        _


.                          . -              ..    -
TABLE D UNIT 2 MAXIMUM DESIGN AND NORMAL EXCLUSION DISTANCE CONCENTRATIONS AT TIFE OF RELEASE OF SINGI' GAS TANK CONTENTS                                                        ,
                                                    -
                                                              ,          .  -  .
          ,,
                                                                                                                          .
                                                                                                      .
                                                                                                                                    < . .
                                                                                                                      '
                                                                                                                                '      "
                                                                                                                                          -
TABLE D UNIT 2 MAXIMUM DESIGN AND NORMAL EXCLUSION
* DISTANCE CONCENTRATIONS AT TIFE OF RELEASE OF SINGI' GAS TANK CONTENTS                                                        ,
(5)                                      (8).
(5)                                      (8).
(1)                                        (h)            Actual      (6)                  '
(1)                                        (h)            Actual      (6)                  '
Actual Max Design          (2)'                    Max Design          Expected  Actual                      Expected Reactor      Max Design    (3)            Exclusion          Reactor    Expected        (7)          Exclusion Ci-See                                          Ci/ Tank      Ci-See      Distance        c Coolant Cone      Ci/ Tank              "  Distancegone        Coolantgonci                  M3          (uCi/M )  3 Irotope          (uCi/ml)      Discharged      M3              (uCi/M )        (uCi/M )    Discharge
Actual Max Design          (2)'                    Max Design          Expected  Actual                      Expected Reactor      Max Design    (3)            Exclusion          Reactor    Expected        (7)          Exclusion Ci-See                                          Ci/ Tank      Ci-See      Distance        c Coolant Cone      Ci/ Tank              "  Distancegone        Coolantgonci                  M3          (uCi/M )  3 Irotope          (uCi/ml)      Discharged      M3              (uCi/M )        (uCi/M )    Discharge
                                                          ,
.Kr 85 4.80            1030    2.16X10-3  ,
.Kr 85
3.3hX10-3            .097        103      2.16X10 4    8.3hX10-X2 131m            3.23              120  2.52X10-b        9.72X10 h            .12          12      2 52no-5 '    9.72X10-5 Xe 133          322                1360  2.86no-3          1.10no-2          20              136      2.85X10-h    1.10no-3 (1) Maximum 1% failed fuel concentration @ 700F.
* 4.80            1030    2.16X10-3  ,
3.3hX10-3            .097        103      2.16X10 4    8.3hX10-
                                                                                          '
X2 131m            3.23              120  2.52X10-b        9.72X10 h            .12          12      2 52no-5 '    9.72X10-5 Xe 133          322                1360  2.86no-3          1.10no-2          20              136      2.85X10-h    1.10no-3
                                                                                                                                    .
(1) Maximum 1% failed fuel concentration @ 700F.
(2) Based on one complete Rx coolant system degasification 8 90% of core life with 1% failed fuel and 30-day decay.
(2) Based on one complete Rx coolant system degasification 8 90% of core life with 1% failed fuel and 30-day decay.
(3) Based on annual average X/Q = 2.1X10-6 sec/M3 since tank releases may be scheduled to conform with average meteorological conditions.
(3) Based on annual average X/Q = 2.1X10-6 sec/M3 since tank releases may be scheduled to conform with average meteorological conditions.
(h) Based on 3-day tank release and X/Q = 2.1X10-6 sec/M3,
(h) Based on 3-day tank release and X/Q = 2.1X10-6 sec/M3, (5)    .1% failed fuel average concentration.
                                                                                                                                  -
(5)    .1% failed fuel average concentration.
(6) Based on one complete Rx coolant system degasification 8 90% of core life with .1% failed fuel and 30-day decay.
(6) Based on one complete Rx coolant system degasification 8 90% of core life with .1% failed fuel and 30-day decay.
(7) Based on annual average X/Q = 2.1X10-6 sec/M3 ,
(7) Based on annual average X/Q = 2.1X10-6 sec/M3 ,
                                                                                                                            ,
(8)'' Based on 3-day tank release and X/Q = 2.1n o-6 sec/M3, e
(8)'' Based on 3-day tank release and X/Q = 2.1n o-6 sec/M3,
                                                                                                                .
e


                                                                                  .
4 TABLE E MAXIMUM EXPECTED YEARLY AVERAGE AND TIME OF RELEASE                                -
                                                                                                                              .
4 TABLE E
                ,
MAXIMUM EXPECTED YEARLY AVERAGE AND TIME OF RELEASE                                -
0F SINGLE TANK CONTENTS CONCENTRATIONS AT EXCLUSION DISTANCE FOR UNIT 1 (1)          (2)                                                                                (5)
0F SINGLE TANK CONTENTS CONCENTRATIONS AT EXCLUSION DISTANCE FOR UNIT 1 (1)          (2)                                                                                (5)
Max Expected                                                      (3)        (4)                  Actual Max                                        Max Expected    Max                  Expected Reactor      Expected                                      Exclusion    Expected                Exclusion Coolant Cone    Annual C1                  Ci-Sec sotons            (uCi/ml)                                                  Distancegonc    Ci/ Tank      Ci-Sec Distance Conc Released                    M 3 (uCi/M )    Discharge        M3    (uCi/M3 )
Max Expected                                                      (3)        (4)                  Actual Max                                        Max Expected    Max                  Expected Reactor      Expected                                      Exclusion    Expected                Exclusion Coolant Cone    Annual C1                  Ci-Sec sotons            (uCi/ml)                                                  Distancegonc    Ci/ Tank      Ci-Sec Distance Conc Released                    M 3 (uCi/M )    Discharge        M3    (uCi/M3 )
:r    ,
:r    ,
4.91          7190                  1.51no
4.91          7190                  1.51no 4.87no        1h38      3.02no-3  1.16no-2
                                                                  -
                                                                                        -
4.87no        1h38      3.02no-3  1.16no-2
:e 131m              1.4            392                8.23no-k              2.64no-5          78.4    1.6hno-k  6. 34no-
:e 131m              1.4            392                8.23no-k              2.64no-5          78.4    1.6hno-k  6. 34no-
'c 133:n              2.32                .476            Ino-6              ,
'c 133:n              2.32                .476            Ino-6              ,
3.21no-0            .095 2.on0-7    7 71n0-7 e133'            191.2            6025                  1.26no-2              4.04X10
3.21no-0            .095 2.on0-7    7 71n0-7 e133'            191.2            6025                  1.26no-2              4.04X10 1205      2 53no-3    9 76no-3
                                                                                        -
1205      2 53no-3    9 76no-3
                                                                                                                                    ,
: 1) 1% failed fuel average cycle concentratio'n.
: 1) 1% failed fuel average cycle concentratio'n.
                                                                                                                          .
: 2) Based on complete degasification of 370,000 gallons of bleedwaste and 30-day decay.
: 2) Based on complete degasification of 370,000 gallons of bleedwaste and 30-day decay.
: 3) Yearly average concentration based on X = 2.1X10      -
: 3) Yearly average concentration based on X = 2.1X10      -
sec/M3, Q
sec/M3, Q
  .)    Based on generation of 12,270 cubic' feet of gas per cycle, 5 tank releases per year and 30-day decay.
  .)    Based on generation of 12,270 cubic' feet of gas per cycle, 5 tank releases per year and 30-day decay.
                                                                                                                                  ,
: 3) Based on 3-day tank releases and X = 2.1X10-6 sec/M3, Q
: 3) Based on 3-day tank releases and X = 2.1X10-6 sec/M3, Q
                                                                                                        .
                                                                                                                                     .s 9
                                                                                                                                     .s 9
                                                                        .
W
* W


_ _ _ _
                                                                                    ,
                                                                                                                                    -
               , -                                                    TABLE F                                  -
               , -                                                    TABLE F                                  -
                                                                                                                                        ,
MAXIMUM EXPECTED YEARLY AVERAGE AND TIME OF RELEASE                                          '
MAXIMUM EXPECTED YEARLY AVERAGE AND TIME OF RELEASE                                          '
0F SINGLE TANK CONTENTS CONCENTRATIONS AT EXCLUSION DISTANCE FOR UNIT 2 (5)
0F SINGLE TANK CONTENTS CONCENTRATIONS AT EXCLUSION DISTANCE FOR UNIT 2 (5)
(1)        (2)                                              (3)                (4)                  Actual Max Expected    Max                                        Max Expected            Max                  Expected Reactor
(1)        (2)                                              (3)                (4)                  Actual Max Expected    Max                                        Max Expected            Max                  Expected Reactor Expected                                        Exclusion          Expected                Exclusion Coolant Cone  Annual Ci                    Ci-See                                  Ci/ Tank-    Ci-Sec Distance Cone Isotopa            (uCi/ml)-    Released                                      Distancegone MJ                (uCi/M )          Discharged      MJ    (uCi/M3 )
                                                                                                  .
6.05n0 -3 Kr 85                97          2880                                          1.93X10-              1030      2.16no-3  8.3hno-3 Xe 131m            1.2            620                      1.3no -3            4.16no-5              120      2.52no-h  9 72n0-4 Xe 133  ,
Expected                                        Exclusion          Expected                Exclusion Coolant Cone  Annual Ci                    Ci-See                                  Ci/ Tank-    Ci-Sec Distance Cone Isotopa            (uCi/ml)-    Released                                      Distancegone MJ                (uCi/M )          Discharged      MJ    (uCi/M3 )
6.05n0 -3
    '
Kr 85                97          2880                                          1.93X10-              1030      2.16no-3  8.3hno-3 Xe 131m            1.2            620                      1.3no -3            4.16no-5              120      2.52no-h  9 72n0-4 Xe 133  ,
200            1.15n0 4                    2.42no-2        . 7 73X10-0            1360      2.86no-3  1.10no-2 (1)' 15 Failed fuel average cycle concentration.
200            1.15n0 4                    2.42no-2        . 7 73X10-0            1360      2.86no-3  1.10no-2 (1)' 15 Failed fuel average cycle concentration.
(2) Based on complete _ degasification of 780,000 gallons, degasification DF of 10, and 30-day decay.                          '
(2) Based on complete _ degasification of 780,000 gallons, degasification DF of 10, and 30-day decay.                          '
(31 Yearly average concentration based on X = 2.1x10-6 sec/M3 ,
(31 Yearly average concentration based on X = 2.1x10-6 sec/M3 ,
(4)- Based on one complete reactor coolant ystem degasific              on at 90% of core life with 1% failed fuel and 30-day decay.
(4)- Based on one complete reactor coolant ystem degasific              on at 90% of core life with 1% failed fuel and 30-day decay.
                                                                                                                                          '
(5) Based on 3-day tank releases and X_ = 2.1X10-6 sec/M3, Q
(5) Based on 3-day tank releases and X_ = 2.1X10-6 sec/M3,
                                                                                                                                          '
Q
                                                                                                                                          #
          .
6                                                                                                                        O e
6                                                                                                                        O e
      *
   ,        .}}
   ,        .}}

Latest revision as of 00:14, 1 February 2020

Responds to AEC 710907 Info Request.Forwards Facility Unit 1 & 2 Max Design,Max Expected & Actual Expected Gaseous Release Summary
ML19326D002
Person / Time
Site: Arkansas Nuclear  Entergy icon.png
Issue date: 10/14/1971
From: Phillips J
ARKANSAS POWER & LIGHT CO.
To: Rogers L
US ATOMIC ENERGY COMMISSION (AEC)
References
NUDOCS 8004300630
Download: ML19326D002 (11)
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=s H t! L P I N'G U Li t L O A FR K A tV G A Q

!<1 b 8004300 D G ARK ANS AS POWER G LIGHT COMPANY DTH & LOUIS 8AN A DTHEETS LIT TLE ROC'K. AAK?"'5AS 722o3. (5 oil 372-4311 October 14, 1971

/# 41 Ac.'& , . ,

ob Mr. Lester Rogers, Director Division of Radiological and -

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Environmental Protection DCT101971 - -

U. S. Atomic Energy Coc: mission g. g. .,, f ..; .. n .,,

8 tu mg Washington, D. C. 205h5 d?j;i[,

SUBJECT:

ARKNISAS POWER & LIGHT COMPANY ARKNISAS NUCLEAR ONE-UNITS 1 NID 2 DOCKET NUMBERS 50-313 AND 50-368

Dear Mr. Rogers:

In response to your letter of September 7,1971, a summary of maximum design, maximum expected, and actual expected gaseous releases from Arkansas Nuclear One-Units 1 and 2 is attached in Tables A through F. Shown below is a list of the information requested by that letter with the appropriate tables refer-enced in reply:

1. Maximum design yearly releases of each gaseous isotope: Tables A and B.

s 2. Actual expected yegrly releases of each gaseous isotope: Tables A and B.

3. Maximum design releases of each gaseous isotope per event: Tables C and D.
h. Actual expected releases of each gaseous isotope per event: Tables C and D.
5. Annual average concentrations at the Exclusion Dist'ance for maximum design releases: Tables A and B.
6. Annual average concentrations at the Exclusion Distance for actual expected re-leases : Tables A and B.
7. Time-of-release concentrations at the Exclusion Distance for maximum design releases : Tables C and D.
8. Time-of-release concentrations at the Exclusion Distance for actual expected i

releases: Tables C and D. l

9. Ci-Sec/M3 for all the above: Tables A, B, C and D.
  • bE0E TAX P AYING. INVE STOA OWNEO MEMBER M890LE SOUTH UTILITIES SYSTEM
c. .

10.

Maximum Unit expected 1: Table E. releases and maximum expected releases per event for .

11.. Maximum expected Unit 2: Table F. releases and maximum expected releases per event for 12.

Annual average and time of release at Exclusion Distance for expected releases of Unit 1: Table E. maximum 13.

Annual average and time of release at Exclusion Distance for expected releases of Unit 1. Table F. maximum Assumptions used for each table are listed below the Table. In addition to these, the follovipg general bases were used te evaluate the vacte volumes generated:

1.

Maximum Design Releases for Unit 1 - Based on operating cycle listed in Unit 1 FSAR, Section ll, Page 11.1, the 625,36Dgallons of vaste produced prior to processing in the vaste system of Unit 1 is assumed to be at the maximum Table 11-5 1% failed fuel concentration listed in the Unit 1 FSAR, Page 11-27, 2.

Maximum Design Release Cvele for Unit 2 - Same as for Unit 1 with addition of twothe above hot780,000 shutdowns and deletion of draining requirement As in Item 1 gallons of vaste produced prior to processing in the vaste system of Unit 2 is assumed to be at the maximum 1% failed fuel con-centration listed in the Unit 2 PSAR, Table 11.1-2.

3.

Mnximum Expected Releases for Unit 1 - Assumes two cold startups from refueling 310 days. concentration The 3,70,000 per year and operation of plant at 2568 MWt for assumed to be at average 1% failed fuel concentrations. gallons of vaste These average concentrations were obtained by calculating average interval concentrations using Table 11-5 in the Unit 1 FSAR and then, using interval bleed rate data, averaging these concentrations over the vaste volumes generated as a result of reactor coolant system deboration.

h.

Maximum on Expected Releases the degasification of 780,000 for Unit 2 - Gaseous vaste quantities are based D; 780,000 gallons is the gallons of vaste stated in Tables B and ating data. expected volume of bleed vastes based on oper-This vaste in assumed to be at an average 1% failed fuel con-of the isotope removed from the reactor coolant system ac postulated cycle discussed volume produced in the cycle.in 2 above and dividing by the total vaste Although the methods used for calculating average coolant concentrations Kr85) from both units , as expected, agree quite vell. differ signif is postulated for evaluating expected releases, the quantities dischargedNo ma from two plants of similar power output and postulated fuel failure should be the same, since the core can only generate so much of an isotope in a T

'1

s .

3-

. given~ operating cycle. The values for Kr85 in the attached tables differ significantly due to differences in the values as umed for the escape rate coefficients (6.5 x 10-0 for Unit 2 vs. 1.0 x 10- for Unit 1), and in the time and operation that the postulated fuel failure occurs. Unit 1 estimates that the 1% fuel failure occurs at the beginning of the third core cycle in the remaining first cycle fuel, whereas Unit 2 assumes 1% fuel failure from the start of operation.

5 Actual Expected Releases for Unit 1 - Similar to 3 above, except that .1%

failed fuel is postulated. Average .1% failed fuel concentrations were obtained by assuming that fuel failure is proportional to the average reactor coolant concentration, i.e. , .1% failed fuel concentration = 1/10 (1% failed fuel concentration.)

6. Actual Expected Releases for Unit 2 - Similar to h, except that .1% failed fuel is postulated, where .1% concentration = 1/10 (1% failed fuel concen-tration.) -

All airborne concentrations were calculaged at ghe Exclusion Distance of 10h6 M using the annual average X/Q = 2.1 x 10- sec/m . This value is valid for calculation of time of release concentrations since sufficient flexibility is available for system operation to ensure that at least annual average meteoro-logical conditions exist prior to discharge. Concentrations of the restricted area boundary of Th6 M vere not calculated but may be easily determined by multiplying the Exclusion Distance concentrations by 1.190 to account for the difference in X/Q at the shorter distance.

If you have any questions concerning this information, please contact us.

Very truly yours,

@l2N%

--.J. D. Phillips Vice President O

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i

STATE OF ARKANSAS COUNTY OF JEFFERSON SUBSCRIBED AND SWORN TO before me, a Notary Public in and for the County and State above named, this 18th day of October , 1971.

v Mr 3

- Notary Public My Commission Expires:

January 2, 1973 .

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4 TABLE A MAXIMUM DESIGN AND ACTUAL EXPECTED YEARLY AVERAGE EXCLUSION DISTANCE CONCENTRATIONS FOR UNIT 1 (3) (h) (6)

(1) Actual (5) Actual Max Design (2) Max Design Expected Actual Expected-Reactor , Max Design Exclusion Reactor Expected Exclusion Coolant Cone Annual C1 Ci-See Distance Cone Coolant Conc  ; Annual Ci Ci-See Distence C ""

In";t+pe (uCi M ) Released MJ (uCi/M3 ) (uCi/ml ) Released M3 3 (uCi/M-)

Kr 85 98 2.30no k h.83no-2 1.55no-3 .h91 68h 1.h 36no-3 4.62no-5 Xa 131m 2.0 835 1.75no 3 5.6hno-5 .1ho , 33.9 7.12 no-5 2.28no-6 Xe 133m 2 70 . 765 1.61no -6 5.15no-8 .232 .039 8.19 no-8 2.62no-9 Xa 133 2h3 1.09n00 2.29no-2 7.36n0-4 19.12 509 1.06 no-3 3.h2no-5 (1) Maximum 1% failed fuel. concentration.

(2) Based on complete degasification of 625,360 ganons of bleed vastes and 30 day decay in vaste gas decay tanks.

(3) Yearly average concentration based on X/Q = 2.1no-6 sec/M3 ,

(h) .1% failed fuel average coolant concentration. '

(5) Based on complete degasification of 370,000 gallons of bleed vastes and 30 day decay in vaste gas decay tanks.

(6) Yearly average concentration based on N/Q = 2.1n0-6 sec/M3, J . ,

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TABLE B

)

MAXIMUM DESIGN AND ACTUAL EXPECTED YEARLY AVERAGE, EXCLUSION DISTANCE CONCENTRATIONS FOR UNIT 2 (1) (4) (6)

(3) Actual (5)

Max Design .(2) Max Design Expected Actual-Reactor . Max Design Actual Expected-

, Exclusion Reactor Expected Coolant Cone Annual C1 Ci-See '

Distance Cone Exclusion Inntope (uCi/nl) 3 Coolant Cone

  • Annual Ci ni Raa_ ii.tance Cone Released M# (uCi/M ) (uCi/ml) Released M3 (uCi/M3)

Kr 85 h.80 1.hlX10 2 96X10-2 9,39xyo h .097 260 5.h6X10- 1.75X10 Xm 131'n - 3.23 1.68X103 3.53X10-3 1.13X10-0 .12 56 1.18X10-4 3.78X10- '

Xe 133. 322 h 1.81X10 3. 80X10-2 1.22X10-3 20 1030 2.16X10-3 6.9hX10-3 (1) Maximum 1% failed fuel concentration @ 700F.

(2) Based on complete degasification of 780,000 gallons of bleed wastes and 30 day decay in gas decay tanks.

-(3) Yearly average concentration based on annual X/Q = 2.1X10-6 sec/M3.

(h) .1% failed fuel average coolant concentration.

(5) Based on degasification of 780,000 gallons of bleed wastes, degasification df = 10, and 30 day decay.

(6) Yearly average concentration based on annual X/Q = 2.1X10- sec/M3 ,

a e

e

TABLE C UNIT 1 MAXIMUM DESIGN AND ACTUAL EXPECTED EXCLUSION _

DISTANCE CONCENTRATIONS AT TIME OF RELEASE OF SINGLE GAS TANK CONTENTS (1) (5)

Max Design (h) Actual (8)

(2) Max Design (6) Actual Reactor Max Design Expected Actual Coolant Cone (3) Exclusion Reactor Expected Ci/ Tank Ci-Sec Expected (7)

Icotope (uCi/ml) Discharged Distance, Cone Coolant Cone Exclusion M3- Ci/ Tank C 4 -ht (uC1/M3 ) (uCi/ml) Discharge Distance Con M3 (uCi/f43 )

Kr 85 9.8 2875 6.0hno-3 2.33no-2 .491 136.8 2.87X10 h 9 97X10-3 Xa 131m 2.0 104 2.18no-h 8.42x10-h .1ho 6.78 1.h2X10-5 h.93n0-U X2 133m 2 70 .095 1 99n0-I 7.71no-7 .232 Xe 133

' .0078 1.6hno-8 5.69X10-7 2h3 1362 5 2.86X10-3 1.10no-2 '19 12 101.8 2.1hX10-h 7.hino-3 (1) Maximum 1% failed fuel concentration.

(2) Based on generation of 19,h00 Ft.3 of gas per cycle, 8 tank releases per year, 30-day decay.

(3) Based on annual average K/Q = 2.1X10-6 3 conditions. sec/M , since tank releases may be scheduled to conform with average (h) Based on 3-day tank release & X/Q = 2.1X10-6 sec/M 3, (5) .1% failed fuel average cycle concentration.

(6) Based on generation of 12,270 Ft.3 -

of gas per cycle, 5 tank releases per year, 30-day decay.

(T) Based on annual average X/q = 2.1X10-6 sec/M3 (8) Based _on_8_.ho_ua Smrah _

TABLE D UNIT 2 MAXIMUM DESIGN AND NORMAL EXCLUSION DISTANCE CONCENTRATIONS AT TIFE OF RELEASE OF SINGI' GAS TANK CONTENTS ,

(5) (8).

(1) (h) Actual (6) '

Actual Max Design (2)' Max Design Expected Actual Expected Reactor Max Design (3) Exclusion Reactor Expected (7) Exclusion Ci-See Ci/ Tank Ci-See Distance c Coolant Cone Ci/ Tank " Distancegone Coolantgonci M3 (uCi/M ) 3 Irotope (uCi/ml) Discharged M3 (uCi/M ) (uCi/M ) Discharge

.Kr 85 4.80 1030 2.16X10-3 ,

3.3hX10-3 .097 103 2.16X10 4 8.3hX10-X2 131m 3.23 120 2.52X10-b 9.72X10 h .12 12 2 52no-5 ' 9.72X10-5 Xe 133 322 1360 2.86no-3 1.10no-2 20 136 2.85X10-h 1.10no-3 (1) Maximum 1% failed fuel concentration @ 700F.

(2) Based on one complete Rx coolant system degasification 8 90% of core life with 1% failed fuel and 30-day decay.

(3) Based on annual average X/Q = 2.1X10-6 sec/M3 since tank releases may be scheduled to conform with average meteorological conditions.

(h) Based on 3-day tank release and X/Q = 2.1X10-6 sec/M3, (5) .1% failed fuel average concentration.

(6) Based on one complete Rx coolant system degasification 8 90% of core life with .1% failed fuel and 30-day decay.

(7) Based on annual average X/Q = 2.1X10-6 sec/M3 ,

(8) Based on 3-day tank release and X/Q = 2.1n o-6 sec/M3, e

4 TABLE E MAXIMUM EXPECTED YEARLY AVERAGE AND TIME OF RELEASE -

0F SINGLE TANK CONTENTS CONCENTRATIONS AT EXCLUSION DISTANCE FOR UNIT 1 (1) (2) (5)

Max Expected (3) (4) Actual Max Max Expected Max Expected Reactor Expected Exclusion Expected Exclusion Coolant Cone Annual C1 Ci-Sec sotons (uCi/ml) Distancegonc Ci/ Tank Ci-Sec Distance Conc Released M 3 (uCi/M ) Discharge M3 (uCi/M3 )

r ,

4.91 7190 1.51no 4.87no 1h38 3.02no-3 1.16no-2

e 131m 1.4 392 8.23no-k 2.64no-5 78.4 1.6hno-k 6. 34no-

'c 133:n 2.32 .476 Ino-6 ,

3.21no-0 .095 2.on0-7 7 71n0-7 e133' 191.2 6025 1.26no-2 4.04X10 1205 2 53no-3 9 76no-3

1) 1% failed fuel average cycle concentratio'n.
2) Based on complete degasification of 370,000 gallons of bleedwaste and 30-day decay.
3) Yearly average concentration based on X = 2.1X10 -

sec/M3, Q

.) Based on generation of 12,270 cubic' feet of gas per cycle, 5 tank releases per year and 30-day decay.

3) Based on 3-day tank releases and X = 2.1X10-6 sec/M3, Q

.s 9

W

, - TABLE F -

MAXIMUM EXPECTED YEARLY AVERAGE AND TIME OF RELEASE '

0F SINGLE TANK CONTENTS CONCENTRATIONS AT EXCLUSION DISTANCE FOR UNIT 2 (5)

(1) (2) (3) (4) Actual Max Expected Max Max Expected Max Expected Reactor Expected Exclusion Expected Exclusion Coolant Cone Annual Ci Ci-See Ci/ Tank- Ci-Sec Distance Cone Isotopa (uCi/ml)- Released Distancegone MJ (uCi/M ) Discharged MJ (uCi/M3 )

6.05n0 -3 Kr 85 97 2880 1.93X10- 1030 2.16no-3 8.3hno-3 Xe 131m 1.2 620 1.3no -3 4.16no-5 120 2.52no-h 9 72n0-4 Xe 133 ,

200 1.15n0 4 2.42no-2 . 7 73X10-0 1360 2.86no-3 1.10no-2 (1)' 15 Failed fuel average cycle concentration.

(2) Based on complete _ degasification of 780,000 gallons, degasification DF of 10, and 30-day decay. '

(31 Yearly average concentration based on X = 2.1x10-6 sec/M3 ,

(4)- Based on one complete reactor coolant ystem degasific on at 90% of core life with 1% failed fuel and 30-day decay.

(5) Based on 3-day tank releases and X_ = 2.1X10-6 sec/M3, Q

6 O e

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