ML19331E238

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Radiological Impact Assessment,Sequoyah Nuclear Plant, Jan-June 1980.
ML19331E238
Person / Time
Site: Sequoyah Tennessee Valley Authority icon.png
Issue date: 08/29/1980
From:
TENNESSEE VALLEY AUTHORITY
To:
Shared Package
ML19331E236 List:
References
RH-80-6-SQ1, NUDOCS 8009090418
Download: ML19331E238 (23)
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Text

l RH-80-6-SQ1 O

RADIOLOGICAL IMPACT ASSESSMENT SEQUOYAH NUCLEAR PLANT JANUARY-JUNE 1980 k

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RADIOLOGICAL IMPACT ASSESSMENT SEQUOYAH NUCLEAR PLANT JANUARY-JUNE 1980 Introduction Potential doses to individuals and populations have been calculated for the time period January 1 through June 30, 1980. The calculations have been made using the measured releases listed in tables 1-2 for radioactivity in both gaseous and liquid effluents. Dispersion of radioactive effluents in the environment has been calculated using meteorological data and river j flow data measured during this period.

Meteorological Data Meteorological data were measured, and average quarterly joint f*.aquency distributions (JFD's) for ground-level releases were calculated.

The ground-level JFD was derived from wind speeds and directions measured 10 meters above ground-level and from the vertical temperature gradient between 10 and 45 meters.

The wind speeds were divided into nine wind-speed ranges. For calculational purposes, calms were distributed into the lowest wind speed range (0-0.5 mph) according to the directional probabilities in the 0.6-1.4 mph range. The quarterly JFD's are listed in tables 3 and 4 for ground-level l l

l releasts.

j Gaseous Effluents Ground-level dispersion models were applied to all releases. l f Radionuclides in gaseous effluents were assumed to be released continuously.

.y j Dose estimates for external air exposures were made at the site boundary.

2 External doses to the skin and total body were estimated for the nearest residence in each sector. Internal doses were estimated for real receptors due to the ingestion, inhalation, and external exposure pathways. The milk ingestion doses were calculated for farms where milk is consumed without commercial preparation. Doses are given in tables 5 and 6 for these individual exposure pathways at the maximum exposure locat ans.

Population doses were calculated for an estimated 1,057,010 persons living within a 50-mile radius of the plant site. Population doses were calculated assuming that each individual consumes vegetables and meat produced within the sector annali in which he resides. Doses from milk ingestion were calculated fro'a data on milk production within 50 miles of the plant site. Doses from external pathways, inhalation, and beef and vegetable ingestion are based on the 50-mile human population distribution.

Population dose estimates for the gaseous effluents are presented in table

7. e Liquid Effluents Doses from liquid effluents were calculated using measured hydraulic data. The average river flows at the plant site were 33,830 cfs for the second quarter. Radioactivity concentrations in the Tennessee River were calculated assuming that releases in liquid effluents were continuous.

Doses were calculated for recreation, consumption of fish, and drinking water from public water supplies between the plant site and the mouth of the Tennessee River. The maximum individual dose from drinking water was assumed to be that calculated at the nearest downstream public water supply (C. F. Industries, Inc.). The maximum potential recreation 1

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3 dose was calculated for a location immediately downstream from the plant M outfall. Dose estimates for the liquid effluents are presented in tables 8 and 9.

Direct Radiation ,

External gamma radiation levels are measured by thermoluminescent dosimeters (TLD's) deployed around Sequoyah Nuclear Plant. During the preoperational period from August 1975 to January 1980, these levels averaged approximately 23 mR/ quarter at onsite stations and 19 mR/ quarter offsite. These data reflect a difference of 2-5 mR/ quarter (average approximately 4 mR/ quarter) between onsite and offsite radiation levels.

These higher values measured onsite may be attributable to natural variations e

in enviranmental radiation levels, earth moving activities onsite, the mass of concrete employed in the construction of the plant, or other influences.

4 Analysis of environmental TLD data for the reporting peried showed that cxtreme gamma radiation levels averaged 20.3 mR/ quarter at onsite stations and 15.1 mR/ quarter offsite. This indicates that there was no identifiable increase in dose rate levels attributable to direct radia-tion from plant equipment and/or gaseous effluents. Fluctuations in natural )

background dose rates and in TLD readings tend to mark any small increments which may be due to plant operations.

Dose Summary Doses calculated for this semiannual period result from the low-level effluent releases of unit 1. For gaseous effluents released in the first quarter, the maximum gamma and beta air doses were calculated to be o

4 0.0 and 0.0 mrad, respectively. During the second quarter, the nimma and beta air doses were 1.82E-ll and 1.84E-07 mrad, respectively. These quarterly doses are well below the annual air dose guidelines (as specified in Appenuix I to 10 CFR 50) of 10 and 20 mrad for gamma and beta radiation, respectively, for one reactor unit. (All doses and dose limits referred to will be for one reactor unit.) The maximum doses from external sources to the skin and total body during the first quarter were calculated to be 0.0 and 0.0 mrem.

During the second quarter, the skin and total body submersion doses were 0.0 atd 0.0 mrem, respectively. These compare with annual dose guidelines of 15 mrem to the skin and 5 mrem to the total body. Internal doses to the maximum exposed organ were estimated to be 0.0 and 1.90E-02 mrem for the first and second quarter. The maximum exposed individual was identified as a nearest resident without a milk cow. Therefore, these doses result from the ingestion of meat and vegetables, inhalation, and exposures to external sources of radiation. e For liquid effluents released in the first quarter, the maximum individual doses to the total body and the maximum exposed organ, i.e. , bone were calculated to be 0.00 and 0.00 mrem, respectively. Ir the second quarter, the maximum doses to the total body and bone were calculated to

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be 7x10 " and 3x10 s mrem, respectively. These compare with annual dose guidelines as specified in Appendix I to 10 CFR 50 of 3 and 10 mrem to the total body and maximum exposed organ (bone), respectively, for one unit.

Population doses from gaseous effluents during the first quarter were estimated to be 0.0 man-rem to the total body and 0.0 man-rem to the thyroid. For the second quarter, population doses were 2.27E-03 man-rem o to the total body and 1.17E-02 man-rem to the bone.

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From liquid releasec during the first quarter, the total popula-tion along the Tennessee River was estimated to recalve 0.0 man-rem to the total body and 0.0 man-rem to the maximum exposed organ (bone). For the second quarter, the Tennessee River population was estimated to receive 0.7 man-rem to the total body and 12 man-rem to the maximum exposed organ (bone).

In summary, all doses calculated were below the guidelines of Appendix I to 10 CFR 50 and below the limits specified in the Sequoyah Nuclear Plant technical specifications for plant operation.

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TABLE 1 SEQUOYA", NUCLEAR PLANT GASEOUS EFFLUENT RELEASES

  • First Quarter Second Quarter Nuclide 1980 (Ci) 1980 (Ci)

Kr-85 0.0 0.0 Kr-851-i 0.0 0.0 Kr-87 0.0 0.C

    • -88 0.0 0.0 5-133 0.0 0.0 Xe-135 0.0 0.0 Xe-135m 0.0 0.0 Xe-138 0.0 0.0 I-131 0.0 0.0 I-133 0.0 0.0 I-135 0.0 0.0 Sr-89 0.0 9.42E-05 Sr-90 0.0 5.24E-05 Cs-134 0.0 0.0 Cs-137 0.0 0.0 Ba-La-140 0.0 0.0 m
  • All releases are ground level e

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R TABLE 2 SEQUOYAH NUCLEAR PLANT LIQUID EFFLUENTS ACTIVITY (pCi) P Nuclide First Quarter Second Quarter H-3 0.0 3.77E+4 P-32 0.0 7.23E+3 Sr-89 0.0 2.92E+4 Sr-90 0.0 8.93E+3 Cs-137 0.0 1.45E+J t

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TABLE 3 SEQUOYAH NUCLEAR PLANT METEOROLOGICAL DATA GROUND LEVEL JOINT FREQUENCY DISTRIBC'GON IN PERCENT - FIRST QUARTER 1980

_. _- _ _ _ _ . _ _ _ . _ . ST 491LLU .CL A55..A . _

.WINQ_5PELOS _ltt ME TERS PEH._SECOND_EHOM_IEE._5LCTQftS_lhDICAIED SLLTOR 0.13 0.45 1.10 1.99 2.H0 4.45 6.91 9.59 13.00 TCTALS__

N 0.0 0.0 0.0 0.0 0.0 0.0 0.140 0.0 0.0 0.140

_ __P#N E ___ 0. 0 _ . 0 0 _ _ 0. 0 . 0.0 ._._ 0.140 0. 0 _ __ u . 0. __ 0. 0_0. 0_ ___. 0.14.0_

ht 0.0 0.0 0.409 0.409 1.087 0.818 0.0 0.0 0.0 2.723 FhE 0.0 00 0.0 0.a __.o.o 0.0 0. 0. 00 0.J1 0.0 E 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

___ E S E.._ 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

%SE__._.0.0 0.0. _ 0.0._._0.0._ .0.0. _ 0.0.__.__0.D._..0 0 0.0 0.0

. 5 0.0 0.0 0.0 0.0 0.0 0.0 0.0 00 0.0 0.0 "W 0.0 00 0. 26.9___ D .1.4_0_ 0. U_._0.1 AQ_ __0. 0 00 0o 0.549 Sw 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. .

g h 0.0 0.0 0.0 0.0 0.0 0.539 U.0 0.0 0.0 0.539 hhW 0.0 0.0 .0 .0 _._0 . 0__0. 0_ _0 . 0 ..._. 9 . Q___.0 0 0.0 0. 0 hw 0.0 0.0 0.0 0.0 0.0 0.140 0.0 0.0 0.0 0.140 NhW 0 . 0 _ . _ . 0 . 0_ _ _ D . Q__.__ _0 . a. _. _0 . Q. 0.1.40___Q4 18__0.0 0.0 0 818 tnt ALS._. 0. rL. _ 0. 0 _ _.0. 6 7 8 _0. 5 4 4 _ _l . 22L _1. 7 7.6_ 0. S i tt._.Q 0. _0. 0 h0A8

_ . . __ ______ _.S T A B ILID_CL ASS _t!

WIND.5PFE05 IN NETERS PEH SECOND F.H04. iHE 5F.C TOR $_ INUIC A TE D.. _ . _

SCCTOR 0.13 0.45 1.10 1.99 2.80 4.45 6.91 9.59 il3.00 TOTAL 5 N 0.0 0.0 0.0 0.0 0.0 0.0 0.140 0.0 0.0 0.140 NhF .0 0_..__ 0 . 0 0.0 0.140__Q.140__0.4Q9._U.0 00 0.0 0.688 NL 0.0 0.0 0.409 0.409 0.H18 1.357 U.0 0.0 0.0 2.993 LiiE_ _. 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 . ').

St 0.0 0.0 0.0 0.0 0.0 0.0 U.0 0.0 0.0 0.0 s %E 00 0.0 0.11 0 0.0 010 0.0 c a.0 0.0 0.0 0.140 5 0.0 0.0 0.0 0.0 0.0 0.140 0.0 0.0 0.0 0.140 55W .._ 0.0___.0.0 _ 0 . 0_ __ 0 . 0____ . .u . 0 0.269 U.0 .

0.0 00 0.269 Sm 0.0 0.0 0.0 0.0 0.140 0.140 0.0 0.0 0.0 0.279 kbW.__ 0.0__.0.0 0.0 0.0 _ _.0.0 0.0 0.0 00 0.0 00 W 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 hNW Ota 0.0 00 00 0.0 0.140 0.0 0.0 0.0 0.140 i Nm 0.0 0.0 0.0 0.0 0.0 0.140 0.0 00 0.0 0.140 hhw_ _ 0.0____0 0._____0.0_ __0.0 0.0 0 5_39__0.0 00 0.0 0.539 TalALS__0 0 ___0 0_.____0.549 _ Q.549 110Y7 3 113__.0.140 00 0.0 S.467

TABLE 3 (CONTINUED) l t

- _ _ _ _ _ _ . .. ._ STABILITY CLASS.C_

. WlHD. SPEED 5 .lPL rdEIERS _RER_SECOND_ER0rd._Itif__5ECIOPS_ lhD LCAIED SEL10R 0.13 0.45 1.10 1.99 d.HO 4.45 6.91 9.59 13.00 TOTALS h 0.0 0.0 0.0 0.0 0.0 0.269 0.0 0.0 0.0 0.269 hhF 0.0 .0 0 0.0.__ 0.0. _ 0.0 0.0__ _0.140._0 0 0.0 .0.140 ht 0.0 00 0.678 0.409 0.539 0.539 0.0 00 0.0 2.165 FhF A.n D.0 0.0 0.H 0.0 0.0 0.0 00 0.0 0.0 E 0.0 00 0.0 0.0 0.0 0.0 0.0 00 0.0 0.0 65E.__.. 0.0._. 0.0 . 0 . 0 __ _ 0 . 0 . _0 . 0. 0 . 0_.__ .0 . 0 0 0_..__0.0 0.0 SL 00 00 0.r 0.0 0.0 0.0 0.0 00 0.0 0.0

%5E ___ 0.0 00. . O.O _ 0.0__._.0.0 _ 0.0___ U.0____0 0 0.0 0.0.

5 0.0 00 0.0 0.0 0.140 0.0 0.0 00 0.0 0.140 W D . fL _. 0. 0_. _._D . 0 0.0 0.140_D.h39. D .D 0.n 0.n n.6.7a ~

Sw 00 00 00 0.409 0.0 0.u u.0 0.0 0.0 0.409 h5W_. 0.0 _ _ 0 0 0.0 ._0.0 ___ 0.0 0.0 0 . 0 . __.__ 0 0 . _ __ 0 . 0 .0 . 0_ . _

W 0.0 00 0.0 0.0 0.0 0.140 0.0 00 0.0 0.140 khW 0.0 0'. 0 0.a. _ 0.0 0.0 0.0 0.0 00 0.0 0.0 0.0 0.0 0.0 00 0.0 0.0 d hw 0.0 00 0.0 0.0 0.0 _ 040____.__0.0 0.0 0.0 DA0 00 00 WW. 0.n D.0

_.TDI ALL. 0. Q._. _ _0. 0 . . 0. 6 f & ._0. 818 _. 0. 21 B_1. 4 8 6_._9.14 0 __0.s 0 ___. 0. D 11941

. ._ __Ji TA B IL I T Y CLASS 0 _

WIND _ SPEEDS.IN 'dETE95.PER_SECQND.EROM_THf._ SECTOR 1 INDI.CATt0 ..

SECTOR 0.13 0.45 1 10 1.99 2.80 4.45 ~6.91 9.59 *13.00 TOTALS N 0.0 00 0.409 0.67F 1 087 2.983 0.0 0.0 0.0 5.158 hhF 0.0 00 0 .5 3 L l .16 6.__1. tht5 __1. 691__0 . 0 0.0 0.0 6.0%

NL C.0 00 1.0t7 1.626 1 895 1.e26 0.0 0.0 0.0 6.235 ENE 00 0.0 0 140___0.140 0.0 0.0 Oto 0.9 0.u 0.2_79 E 0.0 00 0.269 0.0 0.0 0.0 0.0 0.0 0.0 0.269 00 0.0_._ _.0.0____.0,0 0.0 0.0 0.0 0.0 0,0 0.0 ESL SE 0.0 0.0 0.0 0.0 00 0.0 0.0 0.0 0.0 0.0 UF 0.Q 0.Q 0.4Q9._0.0 0.14O L .0.0 0.0 0.0 0.0 0.549 5 0.0 0.0 0 140 0.269 0.269 0.81d 0.0 0.0 0.0 1.496 55w 00 _00.. 0. 6 7 8L_. 0. 6 7 A__1. 7 6 6._.l . 7 66 0.140___0 0 0.0 5.029 SW 0.0 0 269 0.409 1.357 1 217 0.948 0.269 0.0 0.0 4.469 0.140__0.539___0.409 _u 0 0.0 1,357 nw 0.0 0.269_.0.0 00..

1.367 h 0.0 0.0 0.0 0.140 0 140 0.678 0.409 0.0 0.0 wNw n.n 0 1.g.0__, Q . 0 0.0 0.409 0.269 '0.140 0.0 0 ._0 0.95M NW 00 0.140 0.0 0.269 0 140 0.539 0.0 0.0 0.0 1.087 PNW t 00 0,1dt0__0tlaP _taiO9 0 5J2_._.L tiL6____0. . i 0 Q19 0,0 2d5J T RIALS __.0. 0 0. 910___4 J 2 0 7.472 10m.010_1 M 5.0._ 0.958 0.0 0.0 37.10.1

1 TABLE 3 (CONTINUED)  !

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_ _____ _.STABILITL CLASS _E. _. _

SECTOR WINQ_

0.13 SPEEDS . IN SE T ERS _PEH_SECONQ_ER0!LIBE_5ECIORS_INulCAitD 0.45 1.10 1.99 2.80 4.45 6.91 9.59 13.00 TOTALS h 0.0 0 140 0.678 0.94H 0.409 ht# _0 1.087 00 00 0.0 3.262 hl 0.0 0_.0. 0.0 0_2. 0 35_ 0. 918_ 0. 539_D. 0 00 00 0.0 3.392 0.Hl8 0.539 0.140 0.0 0.0 00 0.0 1.496 N D.Q 0 14 0_.0.14 0.__0. (L 0. f1 0 . 0____L Q nno n.n n . p_7 9 E 0.0 0.269 0.2e9 0.0 0.0 0.0

_ ESE _ 0 0 ___ 0.0 0.0 00 0.0 0.539

_ 0.2t9 0.0 ___0.0.__ 0 0 ._.0.0._ _0 0.___.0 0.

St 0.0 0.0 0.0 0.0 0.269 0.0 0.0 0.0 00 0.0 0.0

  • _5 5 E___._ 0 0 _ 0. 0._ .0. 5 3 9 . 0. 0 .._0 . 6 7 8__ . 0 . 4 0 9.__0 0 __._ _ 0 0 0.0 1.626 5 0.0 0.0 0.678 1.087 0.269 0.539 0.0 (SW 00 00 0.0 2.574 0 14 0_._2. 0 3 $ _._2. 5 7 4__ 1. 7 6 6__0. 9 4 tL u . A Sw 0.0 0.409 0.94R 1.M95 1.766 0 269 0.0 o.0 0.0 7.467

_W h W . _ 0. 0 .___ 0 0 ._ 0.140.. 0.409. 0.269._ 0.539 _ 0 140_ 0000_____0.0 0.0 5.287 4 W 0.0 0.0 0.269 0.409 0.539 0.539 0.0 1 496 khW 0.0 .020____.0.539_ 0.0 0.0 0.0 1.756 hw 0.0 02140__0.140_ _0.0 0.0 020 0.618 0.0 0.140 0.409 0.140 0.140 0.0 00 Nhw 0.0 0.0 0.0 0.828 0.14 0_._0.2t 9_ Q.i.19 _ D.110 0.0 0.0 0.0 1.087 YOIALS__0.0.

1. 0 9 7 _ . 9. 6 3 7__9. 3 5 9 __ hl.9 3.__4 . M 9___0. L4 0___ A . 00,0 32.173 STABIL11J_ CLASS F SECTOR.0.13 _ _ _ WIND0.45 _5PEEDS_.!N1.10 1.99 PETFR$ 2.80 4.45PER.5ECOND_EROM.JHE_

6.91 SECTORS INDICATE

~ ~

~ ~

9.59 13.00 TOTats

'0.54 I 0.818~0.269

~

N 0.0 0.0 0.0 0.0 00 0.0 1.227

_ hNE 0.n' O .14 0__2. 4 H_0.14.0_Q . 0 0.0 0.0 ht 0.0 0.0 2.165 0.140 0.0 00 0.0 2.72.1 0.0 0.0 0.0 0.0 2.304 JC 0.0 00 0.0 0.0 0.0 0.0 0.0 00 9.0 0.0 E 0.0 0.0 0.0 0.0 0.0 0.0 0.0 00 0.0 0.0

_ E 5 E _._ 0 . 0 ___ 0 . 0 . _

SL 0.0 _

0.0.__0.0 __0.0.__0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 00 0.0 0.0 shE 0.0 00 0.14 0__.0 t0 0.140 5 0.0 0.0 0.0 0.0 0.0 0.0 0.779 0.539 0.539 0.0 0.140 0.0 0.0 0.0 1.217

__ $wSSW __0.0 0.n _ _0.0 _ 0.404._ 0.769_ 0.0_____.0.o_ 0.0 0.Q 0.0 0.674 0.0 0.539 0.539 0.0 0.0 0.0 00 0.0 1.077

___W5W_ __ ._ 0 0._____ 0. 0. _ __ 0 . 0 _ _ __0 . 0_ __._ 0 .14 0_ 0 . 0 0.0 W 0.0 0.0 0.0 0.0 0.0 0.0 q.0 0.140 0.0 0.0 0.0 0.0 0.0 whW 020 Oto 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____ 0 140_0. 140 0,4 0 9,_0.. ._Q 0,0 0.0 00 0.0 0.688 o

_lul AL S___0. 0 A 419__1.153 2.304 0.279 0 14_.9__ 0.0 0.0 0.0 10.335

)

TABLE 3 ? CONTINUED)

_ . ._ STAe!LITY CLASS _G ._.

WIND _.SEEEDS. IfLMETERS.EEB SECOND FROM THF SECIDf15. IrdDICAT ED SECTOR 0.13 0.45 1.10 1 99 2.H0 4.45 6.91 9.59 13.00 TOTALS N 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 NNE.___ 0.0 _ 0.140_. l.486 _0.269 _0.0 00 0.0 0.0 0.0 1.895 NL 0.0 0.269 0.948 0.0 0.0 0.0 0.0 00 0.0 1.217 F_ h r n.n n.Q 0.14n o.n 0.n n.o 0.0 0. 0. 0.0 n.lgo E 0.0 0.0 0.0 0.0 0.0 00 0.0 0.0 0.0 0.0

_ E S E_ . 0. 0 __ 0 . 0 _ 0.269_.0.0__ 0.0 00 0.0 _ _0 0 0.0 0.269 St 0.0 0.269 0.140 0.0 0.0 00 0.0 00 0.0 0.409

_ SSF 0.0 0.269._0.269.__0.0 0 . 0 __ 0.0 0.0 0.0 3.0 0.539 ,

S 0.0 0.140 0.269 0.0 0.0 00 0.0 00 0.0 0.409 uw n.Q A D. 0.4a9_0.n n.n n.n c.Q n.n nn n ana Sw 0.0 0.269 0.140 0.0 0.0 00 0.0 00 0.0 0.409

____h5W. _ 0.0.__. 0.0 _. 0.0.__ 0.0 0.0 00 0.0 00 0.0 0.0 g w 00 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 kNW_ _ 0.0 0. 0 _ __0. 0 0.0 0 . 0_ _._.0 . 0 00 0.0 0.0 0.o Nw 0.0 0.0 0.0 0.0 0.0 00 0.0 0.0 0.0 0.0 htaW 0.n n.g o.140 0.0 0.0 0.0 00 0.0 0.0 0.140 701 ALS _0. 0_1. 35 L . 4.210. _0. 26.9 _0. 4 0.0 90 Ot0_ _0.0 5t026 r

TABLE 4 SEQUOYAH NUCLEAR PLANT METEOROLOGICAL DATA r CROUND LEVEL JOINT FREQUENCY DISTRIBUTION IN PERCENT - SECOND QUARTER 1980 STAPILITY CLASS A WIND SPEE05 IN l'ETERS PER SECOHO FRnN THE SECTORS IN01CATED SECTOR 0 13 0 45 1.10 1.99 2.80 4.45 6.91 9.59 13.00 TOTALS N 0.0 0.0 0.050 0.0 0.093 0.129 0.0 00 0.0 0.369 NNE 0.0 0.0 0 140 0.508 0.608 0.419 0.0 0.0 0.0 1.675 NE o.0 0.0 0 189 1.4u5 0.508 0.469 0.0 00 00 2.652 ENE 0.0 0.0 0.0 0.090 0.0 0.0 0.0 0.0 0.0 0.099 E 0.0 0.0 0.140 0.140 0.0 0.0 0.0 0.0 0.0 0.279 ESE 0.0 0.0 0.0 0.0 0.0 v.0 0.0 0.0 0. 0, 0.0 SE o.0 0.0 0.0 0.0 0.0 0.0 00 00 0.0 0.0 SSE o.0 00 0 050 0.0 0.189 0 369 00 00 00 0 60e S

55W 00 o.0 00 0 189 0 050 0.229 a.220 00 00 00 0 698 0.0 0 279 0.608 1.625 1.435 0.6 0.0 00 3.947 SW o.o 0.0 0 050 0.469 0.837 0 600 0 229 00 00 2 103 W5W 0.0 0.0 0.090 0.0 0.05J 6.199 0.050 00 00 0.379 J W 0 050 0.0 0.0 0.0 0.140 9.2 T9 0.050 0.0 00 u.518 WNW 0.0 0.0 0.0 0.0 0.0 0.229 0.0 0.0 0.0 c.229 NW 00 00 0.0 0.050 0.093 0.189 0.050 0.0 0.0 0.379 NNW 0.0 0.0 0.050 0.0 0.279 0.5J8 0.0 0.0 0.0 0.837 TOTALS 0.0 0.0 1 276 3.399 4.645 5.154 0.379 0.0 0.0 14.853 STARILITY CLASS t.

WING SPEEDS IN HLTFR$ PER SECOND FROM T+1E SECTORS INDICATED SECTOR 0 13 0 45 1.10 1.99 2 80 4 45 6.91 9.59 13.00 TOTALS N 0.0 0.0 0.050 0.050 0.050 0.0 00 0.0 0.0 0.150 NUE HE u.0 0.0 0 140 0.369 0.140 0.0 0.0 0.0 0.0 0.64J 0.0 0.0 0.698 0.$48 0.279 0.0 kHE 0.0 0.0 0,0 1.625 o.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.o c.o E 0.0 0.0 0.0 0.050 0.0 0.0 0.0 0.0 e.0 0.05o ESE O.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.c SE o.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 55E u.0 0.0 0 140 0.090 0.050 0. 'J 9 0 0.0 0.0 v.0 0.359 5 0.0 0.0 0 140 0.la? 0.229 0.050 00 0.0 a.0 0.60s S5W 0.0 0.0 00 0.837 0.329 0.189 0.0 0.0 0.0 1.356 Sw o.0 0.0 0.0 0.279 0.50b 0 .1 '. 0 0.0$0 0.0 0.0 0.977 WSW o.o 0.0 0.050 0.050 0.0 0.090 00 0.0 n.0 0.189 W 0.0 0.0 0.0 0.0 0.093 0.0 0.0 0.0 0.0 0.090 o.o Wow 0.0 0.0 0.050 0.050 0.0 0.0 0.0 0.0 0.100 I

N61 0.0 0.0 C.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 limW o.0 0.0 0.0 0.050 0.09J 0.050 0.0 0.0 0.0 0.189 TOTALS 0.0 0.0 1.216 2.662 1.814 0.606 0.050 0.0 0.0 6.350

r-TABLE 4 (CONTINUED) i 1

STA91LITY CLASS C d!ND SPEEDS IN METERS PER SECOND FRD'l T"L SECTURS IN01C A TED SECTOR 0 13 0 45 1.10 1.99 2.63 4 45 6.91 v.59 13.00 TOTALS N 0.0 0.0 0.050 0.0 0.093 v.0 0.0 0.0 0.0 0.140 NUE 0.0 0.0 0 279 0.329 0.140 0.0 0.0 0.0 00 0.740 NE 00 00 0 787 0.229 0.140 c.o 0.0 0.0 n.0 1.156 ENE 0.0 0.0 0.0 0.050 0.0 e.o 0.0 0.0 0.0 0.05c E o.0 0.0 0.090 0.0 0.0 0.0 0.0 0.0 9.0 u.090 ESE 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 ^o.0 0.0 SE 0.0 0.0 0.0 SSE 0.0 0.0 0.n 0.0 0.0 0.0 0.0 00 0.0 0 140 0 140 0.093 0.107 00 0.0 00 0.555 5 0.0 0.0 0.050 0.090 0.09a n.o 00 0.0 0.0 0.229 =

SSW 0.0 0.0 0 279 0.648 0.229 e.140 0 050 0.0 00 1 346 Sw 0.0 0.0 0 229 0.2 19 0.140 0./79 0.050 0.0 0.0 c.977 W5W o.0 0.0 0.0 0.650 0.0 0.050 0.0 0.0 00 0.100 W 0.0 0.0 0.0 0.050 0.189 0.430 0.0 0.0 0.0 0.289 Witw 0.0 4 0.0 0.050 0.050 0.0 C.650 0.0 0.0 0.0 0.150 Nd 0.n 0.0 0.0 0.0 0.050 0.r50 0.0 0.0 0.0 0.100 N4W 0.0 0.0 0.0 0.0 0.0 0.090 0.0 0.0 0.0 0.090 TOTALS o.0 0.050 1 954 1.864 1.156 0.697 0 100 0.0 0.0 6.021 STA31LITY CLASS o d!No SPEEDS IN PLTERS PER SECO:lD FRO:t THE SECTURS INDICATED SECTOR 0 13 0 45 1.10 1.99 2.80 4.45 6.91 9.59 13.00 TOTALS N 0.003 0.050 0.329 0.279 0.140 0.189 0.0 0.0 0.0 0.990 NUE 0.n06 0.090 0.977 1.206 1.48S 0.189 0.0 0.0 0.0 4.043 NE 0 012 0.189 0.977 0.698 0.608 0.097 0.0 00 0.0 2.574 E r.E 0.on3 0.050 0.090 0.0$0 0.0 0.e 0.0 0.0 0.0 v.192 E 0.003 n.950 0.n50 0.0 0.0 0.0 0.0 0.0 0.0 9.103 ESE 0.0 0.0 0.n90 0.0 0.0 0.0 0.0 0.0 0.0 0.090 SE o.0 0.0 0.050 0.0 0.0 0.0 0.0 0.0 0.0 0.050 55E 0.006 0.090 0.279 0.0 0.09J 0.329 0.229 0.0 0.0 1.023 5 0.003 0.050 0.419 0.419 0.27) 0.459 0.0 0.0 0.0 1.e 3 8 Shw c.9 0.0 1.256 2.083 0.927 0.696 0.189 0.0 0.0 3.154 SW 0 003 0.050 0.608 1.435 0.229 0.649 0 140 0.0 00 3.113 WSW 0.003 0.050 0.229 0.090 0.189 0.279 0.0 0.0 0.Q 0.840 W 0.0 0.0 0.090 0.329 0.229 0.050 0.0 0.0 0.0 0.696 WNW 0 006 0.090 0 050 0.0 0.050 0.050 0.0 0.0 00 0.24S NW 0.0 0.0 0.050 0.050 0.093 0.3 0.0 0.0 0.0 0.189 NNW 0.0 0.0 0 050 0.189 0.229 0.279 0.0 0.0 0.0 0.74d L

TOTALS 0.048 0.758 5 592 6.918 4.546 3.27C 0 558 0.0 00 21.689

TABLE 4 (CONTINUED) i p

STAp!LITY CL455 L WINn SPrEDS IN HETEPS p[H 5tCo l0 F81:o toc SECTIMS ItIDIC ATE n SECTUR 0 13 0 45 1 10 1 99 2 F; 9 4% 6.91 9.%9 13.00 Tnit,L 5 N U.003 9.229 0 767 0.55R o.321 6.9 0.3 7.0 0.0 1.907 NNE 0.005 0.369 1.814 1.954 n.277 n.oSc 0.3 0.0 0.0 4.471 NE 0.005 ti.419 0 738 U.419 0.169 i.i 0.o 0.9 0.0 1.167 ENE o.001 0.050 0.090 0.0 0.0 0.L o.a 0.0 o.o J.141 E 0.005 9.419 0.c50 n.0 0.6 r .o 0.0 0.0 o.0 0.*73 ESE 'J.002 r.140 0.000 0.0 0.o v.i 0 . .' u.0 . o.O o.c31 SE o.0t3 v.721 0.o90 0.n o.a ...o a,:3 o.O o.o a.374 55E o.001 0 050 0.419 0.090 0.14a s.144 0.050 00 00 0.93a 5 0.004 0.329 1 485 0.558 0.09J o.329 0.obo 00 v.o 2.t4) 55W o.004 0.270 2.741 1.764 0.559 ".149 0.050 0.0 0.0 5.586 Sd n.on2 n.119 2 133 1.706 o.46> q.139 o.i 09 n.0 4.23h 4 W5W u . o'. 3 o.229 0.73u n.558 0.107 1.140 0.0 00 0.0 1.r57 W 0,JO? 9.190 0.558 0.229 0.13) ".050 0.0 00 0.0 1.16e WNW r.002 0.1J9 0.329 0.0 0.053 e.o 0.0 0.0 0.0 o.57v NW o.003 0.229 0.419 0.189 0.050 0.4 0.0 0.0 0.0 0.690 NNW o.002 0.189 0.690 0.229 0.229 v.090 0.3 00 00 1.*37 TOTALS 0.047 3.67a 13.228 7.755 2.761 1.226 0 150 0.0 0.0 28.d45 5TAHILITY CLASS F WINn SPFF05 Its '?tTEPS PFR SEtu'3D F 4f M T* SECTORS INo!CATED SECTOR 0'.13 0 45 1.10 1 99 2 63 9.45 6.91 9.59 13.00 TOTALS N 0.007 0.169 0.500 0.189 0.053 " . '? 0.0 0.0 o.o r.v4, NME u.o74 1.60a 2.t91 0.3o9 0.0 n.o u.o 0.0 o.0 3.692 NE o.016 o.4t? 1.*?5 0.279 c.0 *.o 0.0 0.0 9.0 2.149 ENE o.004 0.090 0.t 50 0.n 0.0 e.o u.4 0.0 0.0 .I,.14*

E o.011 0.279 0.229 0.0 n.0 o.o 0.0 0.0 o.O r. 319 ESE 3.or7 0.189 0.0 0.0 0.0 '.o 0.0 0.0 u.o 0.190 SE 9.005 0.140 0.o50 n.0 0.0 o.o 0.0 c.0 a.o t: .17 4 SSE o.013 n.329 0 229 0.0 0.0 a.0 0.0 0.0 0.0 n.371 5 0.013 0.3/4 U.469 0.^ 0.0 o . t' O.c 0.0 0.0 0.olo l SSW u.018 6.469 1.764 0.070 0.0 0.0 0.c 0.0 p.o 2.341 SW o.007 0.100 1.396 0.?29 0.0 C.o 0.te o.0 0.0 1.121 4 WSW

  • u.005 0 .1 ',0 0 279 0.229 0.05a t..o 0.0 0.t o.O 0.703

! W o.004 0.090 0.050 0.0 0.0 8) . 0 0.0 0.0 .o.0 0.144 .

j WNW o.O 0.0 0.0 0.0 0.0 e.0 00 0.0 0.0 0.0 l Nd 0.004 0.090 0 329 0.n50 0.0 0.0 0.0 0.0 0.0 0.472 '

N4W 0.0 0.0 0.140 0.140 0.0 0.0 0.0 0.0 0.0 0.279 TOTALS 0 130 3.549 9.619 1.575 0.103 ".0 0.0 0.0 0.0 14.980 l

l

TABLE 4 (CONTINUED) i

.I STARILITY CLASS b WIND SPEEDS IN PETERS #FR SFC040 F4 N THE $FCTORS INDICATED SECTDR o.13 0 45 1.10 1.99 2ed3 4.45 6.91 9.59 1.4.10 TI) T A L s N U.001 0.050 0 050 0.0 0.0 'e . (' O.0 0.0 00 0.101 NNE u.on) 0.140 0.837 0.0 0.0 i.9 00 0.0 0.0 0.95u NE 0.006 0.279 0 648 0.0 0.a '.o 0.0 0.0 00 c.933 ENE 0.no4 0.189 0 189 0.0 0.9 a.o 00 0.a o.O o.39s E o.005 0.229 0.n50 0.0 0.0 a.o o.o 0.0 a.o e,. 2 9 4 ESE u.002 0.090 0 050 0.0 0.0 u.o 0.0 0.0 u.0 0.144 SE 0.002 0.090 0.050 0.0 0.0 s.o 00 0,0 0.0 0.142 SSE 0.007 0.329 0 1R9 0.0 0.0 8. . o 0.0 0.0 0.0 0.323 5 0.012 0.558 0.500 0.0 0.0 0.0 0.0 0.0 00 1.079 .

SSW o.001 0.050 0.n98 0.090. o.0 o.o o.0 0.0 o.o n.h3a SW o.0 0.0 0.698 0.508 o.0 a.n 0.0 0.0 a0 1.too WSW u.001 0.050 0 279 0.090 0.0 0.0 0. t- 0.0 o.0 0.37o W 0.002 0.090 0.050 0.6 0.0 0.0 0.0 0.0 0.0 0.142 L WNW o.O o.O 0.0 0.0 0.0 n.C 0.0 0.0 0.0 0.0 NW 0.0 0.0 0 050 0.0 0.0 0.0 0.0 0.0 0.0 0.050 NNW u 002 0.090 0.0 0.0 0.0 0.0 0.0 n.0 0.0 0.092 TOTALS o.048 2.233 4.296 0.688 0.0 o.o 00 0.0 0.0 7.265

/

h

TABLE 5 SEQUOYAH NUCLEAR PLANT - INDIVIDUAL DOSES FROM GASEOUS EFFLUENTS - FIRST QUARTE 1

Effluent Pathway Guideline

  • Point Dose Noble gases y Air dose 10 Max.'Exp.I 0.0 mrad B Air dose 20 Max. Exp.I 0.0 mrad 2

Total body 5 Residence 8 0.0 mrem 8

Skin 15 Residence 8 0.0 mrem 1

Iodines /Particulates Thyroid 15 Real (critical organ) Pathway 8 0.0 mrem Breakdown of Iodine / Particulate Exposures (mrem) 4*

Child Adult j Vegetable Ingestion 0.0 0.0 Beef Inyestion 1 0.0 0.0 Inhalation 0.0 0.0 Ground Contamination 0.0 0.0 TOTAL 0.0 0.0 4

eThese are the annual guidelines per unit defined by Appendix I to 10 CFR 50.

1. Maximum exposure point is at 730 meters in the NNW sector.

2.- Dose from air submersion.

3. Receptor is at 1980. meters in the SSW sector, s

(

4

TABLE 6 ,

SEQUOYAH NUCLEAR PLANT ' INDIVIDUAL DOSES FROM CASE 0US EFFLUENTS - SECOND QUARTER 1980 I

t Effluent Pathway Guideline

  • Point Dose Noble gases y Air dose. 10 Max. Exp.I 1.82E-ll mrad 6 Air dose '20 Max. Exp.I 1.84E-07 mrad 2

Total body 5 Residence a 0.0 mrem Skin 2 15 Residence 8 0.0 mrem Iodines /Particulates-Bone 15 Real 1.90E-02 mrem (critical organ) Pathway 3 Breakdown of Iodine / Particulate Exposures (mrem)

Chilu Adult Vegetable Ingestion 1.87E-02 8.71E-03 e

Beef Ingestion

  • 1.64E-04 1.86E-04 Inhalation 1.21E-04 5.02E-04 Ground Contamination 6.63E-10 6.63E-10 TOTAL 1.90E-02 9.40E-03 CThese are the annual guidelines per unit defined by Appendix I to 10 CFR 50.
1. Maximum exposure point is at 950 meters in the N sector.
2. Dose from air submersion.

3.- Receptor is at 1980 meters in the SSW sector.

? 4 i

l l

s. .. .r e. , 1 GA TABLE 7 CASE 0US EFFLUENT POPULATION DOSES FIRST QUARTER 1980 THYROID TOTAL BODY Infant Ch ild Teen Adult Totals Infant Child Teen Adults Tota?-

Submersion 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ground 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Inhalation 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Cow Milk 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Beef Ingestion 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Veg. Ingestion 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 C.0 0.0 TOTAL MAN-REM 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 SECOND QUARTER 1980 -

BONE _ TOTAL BODY Infant Child Teen fdult Totals Infant Child Teen Adults Totals submersion 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ground 6.45E-11 4.02E-10 2.56E 10 1.19E-09 1.91E-09 6.45E-11 4.02E-10 2.56E-10 1.19E-09 1.91E-09 Inhalation 2.28E-05 2.61E-04 8.10E-05 3.21E-03 3.57E-03 1.40E-06 1.60E-05 4.97E-06 1.97E-04 2.19E-04 Cow Milk 7.56E-05 3.20E-04 1.19E-04 3.98E-04 9.14E-04 1.92E-05 8.11E-05 3.02E-05 1.01E-04 2.32E-04 Beef Ingestion 0.0 1.11E-04 6.62E-05 3.57E-04 5.36E-04 0.0 2.82E-05 1.68E-05 9.06E-05 1.36E-04 Veg. Ingestion 0.0 1.41E-03 8.55E-04 4. 3 7E-03 6. 66 E-03 0.0 3.60E-04 2.17E-04 1.11E-03 1.69E-03 TOTAL MAN-REM 9.84E-05 2.10E-03 1.12E-03 8.34E-03 1.17E-02 2.06E-05 4.85E-04 2.69E-04 1.50E-03 2.27E-03

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== n e .e n n a o ou e is

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TABLE 9 LIOUID EFtLUENT DOSE 5 SEQUDYAH HUCLEAR PLAN 1 P00 TINE RELEASES-?ND ou8kTk8 1980

.eeseeeeese.eeeeeeeeeeeee.e eeeeeeeeeeeeeeeeeeeeeeeeeeeeeseos SDNE GI TRACT THYRUID TOTAL 800Y SKIN I. WATER I'tGEST I0rd A. HAXIMUN INDIVIDUAL DOSF (MREMI 3.4E-03 1.7E-04 7.0E-04 7.4E-04 7.4E-04 R. TOTAL POPULATION D056 (HAN-RE9)

TENNE 55Le RIVER 7.3E-01 3.7E-02 1.5E-01 1.6E-01 1.6E-01 II. FISH CONSU9PTION 4 HAXIMUM IPUIVIOUAL 005L (NREM)

CHICKAMAUGA LAKE BELOW SQN 5.1E-01 5 7t-o2 2.1E-02 2.1E-02 2.1E-02

~

R. TOTAL POPULATION 005E (NAN-RE18 TENNESSEE RIVER 1.1E+01 1.3E+00 5.0E-01 5.0E-01 5.0E-01

!!I. RFCREATION IN-WATER -.0VE-WATER 5HORELINE TOTAL BODY SKIN TOTAL BODY $<!N TOTAL SUDY SKIN A. HAXIMUN INDIVIDUAL DOSE (NREMI CHICKAPAUGA LAKE BELOW SQN 7.7E-09 1 2E-05 1 1E-09 3 1E-05 1.3E-06 1 6E-06 R. TOTAL F3PULATION 005E (HAN-REM)

TENNESSEE RIVER 1.8E-08 2.8E-05 2 6E-09 7.4E-c5 3.2E-06 3 7E-06 IV. TOTAL BUNE GI TRACT THYR 0!D TOTAL BODY SKIN A. HAXIMUN INDIVIOUAL DOSE (MREM) 5.2E-01 5.7E-02 2.2E-02 2.2E-02 2.2E-02 R. POPULATION DOSE (MAN-REH)

TENNESSEE RIVER 1.2E+01 1 3E+00 6.5E-01 6.6E-01 6.6E-01

~ s W -: wo

ERRATA SHEET f

FOR 4 RADIOLOGICAL IMPACT AS'SESSMENT - SEQUOYAH NUCLEAR PLANT

  • JANUARY-JUNE 1980
1. Page 3, Direct Radiation, paragraph 2, line 2 " Extreme" should read

" external."

2. Page 3, Direct Radiation, paragraph 2, line 6 " Mark" should read " mask."

s mrem"

] 3. Page 4, Dose SummaryI paragraph 1, line 5 "7x10 ' and 3x10

should read "2.2x10 and 5.2x10-8 mrem." P l, 4. Table 6, Effluent--Eliminate the words " Noble gases." The listed ,

doses result from releases of radiostrontium.

6 i

N I

i l

6

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