ML19350C189

Radiological Impact Assessment,Sequoyah Nuclear Plant, Jan-June 1980

ML19350C189
Person / Time
Site:	Sequoyah
Issue date:	03/24/1981
From:	TENNESSEE VALLEY AUTHORITY
To:
Shared Package
ML19350C185	List: ML19350C184 ML19350C187 ML19350C189 ML19350C190
References
RH-80-6-SQ1, NUDOCS 8103310486
Download: ML19350C189 (21)

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- RADIOLOGICAL IMPACT ASSESSMENT i

SEQUOYAH NUCLEAR PLANT JANUARY-JUNE 1980 e

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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 flow data measured during this period.

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

Ite 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.

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calculational purposes, calms were distributed into the lowest wind speed l

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-1.svel releases.

Caseous Effluents Ground-level dispersion models were applied to all releases.

Radionuclides in gaseous effluents were assumed to be released continuously.

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

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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 i

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 locations.

Population doses were calculated for an estimated 1,057,010 i

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 annuli in which he resides. Doses from milk ingestion were calculated from 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.

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,ccncentrations in the Tennessee River f

were calculated assuming that releases in liquid effluents wer( 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.).

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

Direct Radiation Esternal 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 in environmental radiation levels, earth moving activities onsite, the mass of concrete employed in the construction of the plant, or other influences.

Analysis of environmental TLD data for the reporting period showed that extreme gamma radiation levels averaged 20.3 mR/ quarter at onsite stations and 15.1 mR/ quarter offsite. This indicates that there was J

no identifiable increase in dose rate levels attributable to direct radia-(

tion from plant equipment and/or gaseous effluents. Fluctuations in natural i

-background dose rates and in TLD readings tend to mark any small increments

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which may be due to plant operations.

Dose Summarv 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

4 0.0 and 0.0 mrad, respectively. During the second quarter, the gamma 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 Appendix 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

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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 and 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.

For liquid effluents released in the first quarter, the tc.imum individual doses to the total body and the maximum exposnd organ, i.e., bone were calculated to be 0.00 and 0.00 mrem, respectively.

It the second quarter, the maximum doses to the total body and bone were calculated to be 7x10 " and' 3x105

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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 to the total body and 1.17E-02 man-rem to the bone.

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From liquid releases during the first quarter, the total popula-tion along the Tennessee River was estimated to receive 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 maximus' 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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l TABLE 1 SEQUOYAH NUCLEAR PLANT GASEOUS EFFLUENT RELEASES *

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First Quarter Second Quarter Nuclide 1980 (C1) 1980 (Ci)

Kr-85 0.0 0.0 Kr-85M 0.0 0.0 Kr-87 0.0 0.0 Kr-88 0.0 0.0 Xe-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.' O Cs-137-0.0 0.0

'Ba-La-140 0.0' O.0

• All releases are ground level 4

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TABLE 2 SEQUOYAH NUCLEAR PLANT LIQUID EFFLUENTS ACTIVITY (UCi)

Nuclide First Quarter Second Quarter H-3 0.0 3.77E+4 P-37 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+0 4

P00R DllGl NIL TABLE 3

. SEQUOYAH NUCLEAR PLANT METEOROLOGICAL DATA GROUND LEVEL JOINT FREQUENCY DISTRIBUTION IN PERCENT - FIRST QUARTER 1980 h

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. St a g ILLI.y _Ct asi_a u p 0_SSEEOUh. uE T EFS PEW _.1ECONu_f_00*_.T' E stITraS_EdllCAIE0 SELTCR 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 0.160 00 0.0 0.140 NAF.

0. 0 _

0. 0... C. 0.

0.409... 0.140.0.0.__ U.0. _ 0 0____0.0 0.140___

0.0 ht 0.0 0.0 0.409 1.0A7 0.810 0.0 00 0.0 2.723 F*#

9.0 10 2.0 2 d

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0a

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6.0 0.0 0.0 0.0 0.0 0.0

- 0. 0 0.0 0.0 0.0 f5F

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_0.0 _ 0 0 0.0 3.0 SE 0.0 0.0 0.0 0.0 0.0 0.0 0.0 00 0.0 0.0 15 EL _ 0. 0._ 0.0.._

0.0.__0 0.

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0.0 0.0 0.0 0.0 0.0 0.0 J.0 00 0.0 0.0 ssw no 00 1.Le9 0.h 0_0 0 L L* 0 0.0 10 03 9.549 Se 0.0 0.0 0.0 0.0-0.0 0.0 0.0 00 0.0 0.0 kSt..

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0.0 0.0 0.d39 u.6 00 0.0 0.539

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0.0 0.0 0.0 0.0 0.140 0.0 0.0 0.0 0.140

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Om0 0.142 0 t12__1 0 0,0 e.ala TO I AL1_ 0. 0. _ 0. 0. _._ Q 0 71. 0.5

• C. _L.22 L._1,7 7h _.0. i da.L _3.9 ie STMILILY Ita9s a WIND.5PFEDs IN SETEd5 ped SECONO FFot tee. bECTOR$ INU1Ca TED SECToa 0.13 0.*5 1.10 1 99 2.80 4.45

-6.91 9.5v 13.00 TOTALS N

0.0 0.0 0.0 0.0 0.0 0.0 0.140 0 0-0.0 0.140 nr

0. 0.._ 0 0 2.0 3.L*Q__.Q.itQ 0 4GL _v.D a.0 to L9f a NL 0.0 0.0 0.409 0.404 0.415 1.J5T U.0 0.0 0.0 2.993 LN(_____0.0_

0 0 0.0___ 0.0 u.0 00 0.0 00 0.0 c_. 0 E

0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 ESE,.. n.0;.

0.0_..0.0 0. 0 _ _.0. 0. _ 0. 0 __._. 0. -7 00 0.0 0.0 5t 0.0 0.0 0.0 0.0 0.0 0.0 u.0 0.0 0.0 0.0

%%F 0.0 00 0.140 0.3 00 0.0 00 0.0 00 0.1**

5 0.0 0.0 0.0 0.0 0.0 0.160 v.0 0.0 0.0 0.160 S$w_ _. 0.0 0.0 0.0 0.0 0.l*0 0.140 0.0 0.0 0.0 0.279 0.0 0.0 _,0.0,_ 0.0 0.0 0.209 _U.0 0.o

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0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 mNm a.o 1.0 S.o 0.9 0.0 0.140 0.0 0.0 0.9 1.14n No 0.0 0.0 0.0.

0.0 0.0 0.1 0 u.0 0.0 0.0 0.140 Nhw 0.0_

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, g TABLE 3 (CONTINUED)

_ _.._STA91LITY CLASS.C

__W1hD.1P.EEub _1A. MElrRi_ FIR _SECOND_E808 ItE 5LCIOki INDLCATEC.

SEL104 0.13 0.45 1.10 1 99 d.H0 4.45 6.91 9.59 13.00 TOTALS h

0.0 00 0.0 0.0 0.0 0.269 0.0 00 0.0 0.269 hhr

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_0. 0 0. 0..__. 0. 0 0.0

0. 0_ _0. l t0

_.0 0_.0. 0 0.140 ht 0.0 0.0 0.678 0.409 U.539 0.53%

0.0 00 0.0 2.165 rnr n.n mo on n_n 0.0 0.o e,c o,n oc 0.o E

0.0 0.0 0.0 0.n 0.0 0.0 0.0 00 0.0 0.0 65E_..

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5 0.0 00 0.0 0.0 0.140 0.0 0.0 00 0.0 0.140 m

n.n 0.0 n.n 0.0 D.h o a.%%

0.4 n.n n.n n.g n Sw 00 00 0.0 0.409 0.0 0.U 90 00 0.0 0.400 h5W_. 0. 0. __ 0. 0 0.0.._C.0_. _0.0 0.0 9 0_ _ 0 0 _ 0.0

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0.0 00 0.0 0.0 0.0 0.140 0.0 00 0.0 0.140

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. 0. 6 f fL _.0 218 _.0. 218._ L. 4 2 6_W.140___0_ Q __0. 0 3 911 s1Agriity et ass n w!ND._ SPEEDS lef wETtui.ptq_SECQNQ _f.EQw_JtE_5ECTOR5 INDI.C ATED SECTOE 0.13 0.45 1 10 1 99 2.80 4.*5

'6.91 9.59 '13.00 TOTALS N'

O.0 0'. 0 0.4C9 0.67P 1.067 2.983 0.0 0.0 0.0 5.159 ANF o.o 00 0.539_ _1 765 1.t95 1.h95 0.0 0.D 0.0 6.096 Nt' O.0 00 1.0t7 1.626 1.895 1.e26 0.0 00 0.0 6.235 thE 00 0.0 0.14Q___0 190 0.0 0,. 0 00 0.0 0.0 0.279 E

00 00 0.269 0.0 0.0 0.0 0.0 0.0 0.0 0.269 E5L

'0 0 0.0_._.0.0 0. 0_.__ _0. 0 0.0 c.0 0.n 00 0.0 SE 00 0.0 0.0 0.0.

0.0 0.0 0.0 0.0 0.0 0.0

(%r o.n o.0 c.4c9 0.6 0,140 0.0 0.0 0.0 0.0 e.149 5

00 0.0 0.140 0.269 0.269

0. eld U.0 0.0 0.0 1.496 55" 00

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0.6 7 8L._ 0.67 P_1. 7 66_ ).166_ fl. l

• 0_0. 0 0.0 5.029 Sw 00 0.269 0.409 1.357 1.217 0.948 0.269 00 0.0 4.469 vbw 0.0 0 269_._0.0 0.14 Q._0. 5 3 9_, 0. 4 0 9.__,0. 0 00 0.0 1,357 h

0.0 0.0 0.0 0 140 0.140 0.67e U.*09 00 0.0 1.367 uw o.n 0.1

• W _ o o.0 0.409 a.269

'O.140 0.0 0.0 0.95d hw 0.0 0.140 0.0 0 269 0.140 0.539 U.0 00 U.0 1.087 htW Q.0 0,11.0_. Q s1.3 0 0.4._09 0 5J9 1.Rt2_._0. 0 0.0 0.0 2a.5 J

... _ T c T ALs 0.0 0 918 __4 22e 7.472 10 d h 13.559 0.95a 0.0 0.c 37.201

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TABLE 3 (CONTINUED)

.__ ___..._5TABILITf CLASS _E klND_ SPEEDS.lh_pE TE815_ PEA _iECQNQ_.EROM THE SECI0ni_IN0lIAThu SECT 0A 0.13 0.45 1.10 1.99 2.80 4.45 6.91 9.59 13.00 TOTats k

0.0 0 140 0.678 0.94H 0.409 1.087 0.0 0.0 0.0 3.262 htE

.0 0_ __0 0

2. 0 2 5_. 0. '! ! e._ 0. 5 3 9__J. 0 0.0 00 0.0 3.392 ht 0.0 0.0 0.Mla 0.539 0.140 0.0 0.0 0.0 0.0 1.496 w

nn n.14 0_._0.14 0.__0. n o.a o. 0__.. 00 00 0.n

_n. 27 0 E

0.0 0.269 0.249 0.0 0.0 0.0 U.0 0.0 0.0 0.539

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___0 0 _ 0 0._ 0.2t9 0.0

___0.0.

0 0._. 0 0 ___0 0

00 0.269

$t 0.0 0.0 0.0 0.0 0.0 0.0 0.0 00 0.0 0.0

_ 5SF

0. 0._0. 0_ 0. 5 3 9. 0. 0.._0. 6 7 8_. 0. 4 0 9___0. G ___. 0 0 0.0 1.626 5

0.0 0.0 0.678 1.087 0 269 0.539 0.0 00 0.0 2.574 MW 0.0 0.14 0

2. 0 3 5_2. 5 7 4J. 7 6 6 _0. 9 4 tL._ U. A o.Q a0 7.467 SW 0.0 0.*09 0.94A 1.Mv5 1.166 0.ce9 0.0 0.0 0.0 5 287

_Wh W.

0. 0 _ 0. 0.-

0.140 0.409 0.269._ 0.539_ 0.140__.0 0___._Q.0 1.496 W

0.0 0.0 0.249 0.409 0.539 0.539 0.0 00 0.0 1.756

__kNW 0.n 020

_A.529.__D.0 L140 9.L40 9ta Oto bo 0.818 hw 0.0 0.0 0.140 0.409 0.140 0.140 0.0 00 0.0 0.828

,,,_ jshu 00 0.0 0.140 0.2.19 0.539 0.140 0.0 0.0 0.0 1.097

.. Ta f ALS___0. 0 1.091._ L 637__9.259.__1.d 93 4,749 0.l40 LD 0_. 0 32.173 S T.A e lt.,II.L.CL A S S F 1

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____ lND_ SPEEDS _.IN METFRS REW SECONQ F00" TN_C_ SECTORS INQl3AIED w

SECTOR 0.13 0.45 1.10 1.99 2.80 4.45 6.91 9.59 13.00 TOT 4LS l

.......0.618_ _

.0.269 0.0 0.0 0.0 0.0 0.0 1.227

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N 0.n 0 140 MF 0 0*

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• 0 _2. 9 41__0. L* Q_ _Q. 0 00 Os0 00 00

2. 7D ht-0.0 0.0 2.145 0 140 0.0 0.0 0.0 00 0.0 2.304 ENE 0.0 00 0.0 0.0 0.0 0.0 0.0 0.0 9.0 0.0 E

0.0 00 0.0 0.0 0.0 0.0 0.0 00 9.0 0.0

_ E5E._. 0.0 0.0.

0.0 0.0 0.0 U.0 0.0 00 0.0 0.0 U.0

_. 0. 0 _ 0.0_. _ 0.0. _,0.0 0.0 0.0 0.0 5t 0.0 0.0

%F 0.0 g.0 0.13Q__Q.0 0,140 0.0 0.0 0.9 0.0 0.779 5

0.0 00 0.539 0.539 0.0 0.140 0.0 00 0.0 1.217

_5sw._ _0.8__ 0 0___ 0.404_0.769 0.0

_0. 0 0.0 00 0.0 0.874 Sw 0.0 0.0 0.539 0.539 0.0 0.0 0.0 0.0 0.0 1.077

,,, __w S W,___0.0 _ 0 0___.0.0. _ 0.0_ _ 0.140_ 0.0 0.0 00 0.0 0.140 W

0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 whw 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 4.0 hm 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. 14.0__0,409 0.0 0.0 0.0 00 0.0 0.688

.,_1DJALS J.0

.Ds419_ l l.13.2;304 0.279

0. L4_.9._ 0. 0 0.0 0.0 10.335 t-

TABLE 3 (CONTINUED)

,STaeILITT CLASS G WIND _SSEE05_1h FE.TEPS.PIR_SICONS Fao" M SEEIDiti.1ADICATED SECTOR 0.13 0.45

.l.10 1.99 2.80 4.*5 o.91 9.55 13.00 TOTAL 5 N

0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 hhE._

0.0 _ 0.140___1.426.0.269__ 0.0 0.0 v.0

.00 0.0 1.e9b ht 0.0 0.269 0.94A 0.0 0.0 0.0 0.0 00 0.0 1.217 sur D.o 00 c.160 0n o,n n.u 0, c c, a c.c e, ten E

00 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

_ ESE_._

0.0 _.0 0

0.2t9_.C.0 0.0 0.0 0.0 00 0.0 0.269 _._

5t 00 0.269 0.140 0.0 0.0 0.0 0.0 00 0.0 0.409 nr

.0.0 0.269_ 0.269 J.o 0.Q _ 8.0 0.0 0o 0.0 6 M9 4

5 0.0 0.1*0 0.269 0.0 0.0 0.0 0.0 00 0.0 0.609 m

n.n c_o 0.4_ L O.n n_n nc c.e nc n.n n ina 5m 00 0.269 0.140

0. 0 '

O.0 J.0 0.0 00 0.0 0.409 WSW 0.0.____0.0 0.0___

0.0 0.0 0.0 0.0 00 0.0 0.0 W

G.0 0.0 0.0 0.0 00 0.0 0.0 00 0.0 0.0 httw 0.0 0.0

0. 0 ed 0.0 00 00 0.o 0.0 00 4

hw-0.0 0.0 0.0 0.0 0.0 0.0 U.0 00 0.0 0.0

_._.hb W no o-a c 1*0 oo 00 00 0c oo 00 0 140

. Y OIA L5_._ D. 0

1. 357_4. 210_.0.2tL9._0d 0 0 0.0 O t0__ 2. 0 Le36 1

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j TABLE 4 SEQUOYAH NUCLEAR PLANT METEOROLOGICAL DATA GROUND LEVEL JOINT FREQUENCY DISTRIBUTION IN PERCENT - SECOND QUARTER 1980 STAPILITY CLa55 A WIND SPEEDS IN l'F TERS PER SECOND Flet: fut SirtuAs Ite0!CATED SECTOR 0 13 0 45 1.10 1.99 2.80

• .45 6.91 9.59 13 00 TOTAL 5 N.

0.0 0.0 0.050 0.0 0.090 0./29 0.0 0.0 0.0 0.369 Nt f 0.0 0.0 0 140 0.508 0.60$

0.414 0.0 0.0 0.0 1.675 NE 0.0 0.0 0 189 1.485 0.509 c.469 0.0 00 00 2 652 E tie 0.0 0.0 0.0 0.090 0.0 0.0 0.0 0.0_

o.0

,.099 E

0.0 0.0 0.140 0.140 0.0 0.0 0.0 0.0 u.u o.279 ESE 0.0 0.0 c.c 0.0 0.0 e.0 0.a 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 55E o.0 00 0.n30 0.0 0.159 0.369 00 00 u.0 9 608 5

00 0.0 0 189 0 050 0.229 0.22' u.0 00 p.o 0 60e SSW o.o 0.0 0 279 0.608 1.625 1.439 09 0.0 00 3.947 Sw o.o c.0 0 950 0.469 0.837 0.60e o.229 00 00 2 1'3 wnd.

00 0.0 0.390 0.0 0.0$J S.149 0.05J 0.0 00 0.379 W

0.n 0.0 0 050 0.0 0.140 t.479 0.050 0.0-u.o 0.519 WtiW 0.0 0.0 0.0 0.0 0.0 0.229 0.0 0.0 0.0 c.229 NW 0.0 00 00 0.050 0.090 0.189 0.050 0.0 00 0.J79 NNW 0.0 0.0 0.050 0.0 0.279 0.5JR 0.0 0.0 0.0 0.837 TOTALS 0.0 0.0 1 276 3.399 6.645 5.154 0.379 0.0 0.0 14.653 STARILITY CLAS$ b WING SPEEDS IN HLTFR$ PEE S E CU'40 F 40's THE SECfop5 ItDICATED SECTOR 0 13 0 45 1.10 1.99 2 80 4.45 6.91 9.59 13.00 TOTALS N

o.0 0.0 0.050 0.050 0.050 0.0 0.0 0.0 0.0 U.150 t

hue u.o 0.0 0 160 0.369 0.140 S.J 0.0 0.0 a.0 0.66J NE 0.0 0.0 0.o98 0.$*8

0. 2 7 ">

C.9 0.0 0.0 0.0 1.625 l

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c.0 0.0 0.u c.0 0.0 3.9 c.e 1

E 0.0 0.0 0.0 0.950 0.0 0.0 0.0 0.0 e.0 0.950 ESE o.O 0.0 0.0 0.0 0.0 c.0 0.0 0.0 0.0 0.c SE o.O 0.0 0.0 0.0 0.0 0.o 0.0 0.0 9.0 0.0 S5E u.o 0.0 0 140 0.090 0.053 0.J90 0.0 0.0 0.0 6.J$9 5

0.0 0.0 0 140 0.189 0.229 0.J50 00 0.0 J.0 0.005 l

55W 0.0 0.0 0.0 0.437 0.329 0.199 0.0 0.J 0.0 1.356 Sw o.n 0.0 0.0 0.279 0.500 0.1 0.

o.050 0.0 o.o u.977 W5W 0.0.

0.0 0.o$0 0.050 0.0 0.090 00 0.0 n.0 0.199 W

0.6 0.0 0.0 0.0 0.090 0.0 0.0 0.0 0.0 0.090 WNw n.o' O.0 00 0.n50 0.050 0.0 00 0.0 n.0 0.100 Nu o.0 0.0 0.0 0.0 0.0 J0 0.0 0.0 J.0 0.0 timW

' O.o n.0 0.0 0.050 0.09J 0.050 0.0 0.0 J.0 0.189 TOTALS 0.0 0.0 1.216 2.662 1.81 0.oJ6- 0.o$0 0.0 0.0 6.350 a _-

TABLE 4 (CONTINUED) h STA91LITY CL455 C d!40 SPEE05 IN METERS PER SECOND FRDS THL SECTua5 IN11C ATED SECTOR 0.13 0.45 1.10 1.99 2 63 4.45 6.91 v.59 13.00 Tv7Ath N

u.0 0.0 0.050 0.0 0.093 0.0 0.0 0.0 0.0 0.140 NUE o.0 0.0 0 279 0.329 0.140 0.0 0.0 0.0 0.0 u.740 NE o.O 0.0 0.787 0.229 0.140 c.o 0.0 0.0 o.0 1.15e E9E 0.0 0.0 0.0 0.050 0.0 0.0 0.0 0.0 p.0 0.05r E

o.0 0.0 0.000 0.0 0.6 0.6 0.0 0.0

'i.0 v.o90 ESE o.0 L.D 00 0.0 0.0 0.0 0.0 0.0

'o. 0 0.0 SL

-u0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 u0 0.0 SSE 00 0.0 0 140 0.140 0.o93 0.181 u.0 0.0 00 0.S58 5

0.0 0.0 0.c50 0.000 0.093 n.o u.0 0.0 0.0 c.229 55d 0.0 0.0 0 279 0.668 0.227 0.140 0 050 0.0 0.0 1 34h

$w 0.0 0.0 0.229 0.219 0.140 0.270 0.050 0.0 0.0 c.97t W5W o.0 0.0 0.0 0.050 0.0 0.'50 0.0 0.0 0.0 0.100 W

o.0 0.0 0.0 0.050 0.189 0.4So 00 0.0 0.0 0.289 WOW u.0 0.050 0 050 0.0 0.0 C.i 5o 0.0 0.0 0.0 0.150 Nn o.0 0.0 0.0 0.0 0.053 0.050 0.0 0.0 0.0 c.100 Nud 0.0 0.0 0.0 0.0 0.0 0.070 0.0 0.0 0.0 0.090 TOTALS 0.0 0.050 1 954 1.864 1.15s 0.-97 0 10J 0.0 u.0 6.021 STA91LITY Cla55 u ethe SPEEDS IN :*1TLR5 PFR SEC01D F AT1 THE SECTup5 luo!CATED SECTOR 0 13 0 45

.1.10 1.99 2.8J 4.49 6.91 v.59 13.00 TnTAL5 N

0.003 0.050 0.329 0.279 0.140 0.181 0.0 0.0 0.0 0.990 NUE G.n06 0.090 0.977 1.246 1.47S 0.199 00 0.0 00 4.043 NE 0.012 0.189 0.977 0.698 0.608 0.091 0.0 00 00 2.574 FNE o.003 0.050 0.090 0.0$0 0.0 0.c o.o 0.0 0.0 o.192 E

0.003 0.050 o.a50 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 Sb v.0 0.0 0.050 0.0 0.0 0.0 0.0 0.0 0.0 0.050 SSE o.006 0.090 0.279 0.0 0.09J 0.329 0.229 0.0 0.0 1.L23 5

e.003 0.050 0.41Y 0.419 0.277 0.469 0.0 0.0 0.0 1.t 3 e Shw

'c.9

.0.0 1.256 2.083 0.927 0.n?6 c.189 0.0 0.0 3.154 SW o.003 0.050 0.60s 1.435 0.229 0.$49 0 140 0.0 00 3.113 W5W o.003 0.050 0.229 0.090 0.18) 0.279 0.0 0.0 0.Q 0.P40 W-00 0.0 0.090 0.329 0.229 0.050 -0.0 0.0 0.0 9.696 WNW 0.006 0.090 0 050 0.0 0.050 0.059 0.0 0.0 00 0.245 NW 0.0 0.0 0.e50 0.050 0.093 0.3 0.0 00 0.0 0.169 NNW 0.0 0.0 0 050 0.189 0.227 0.279 0.0 0.0 0.0 4.76e TOTALS o.048 0.758 5.592 6.918 4.546~ 3.27c 0 558 0.0 0.0 21.689

P00R Dmegy TABLE 4 (CONTIWED)

S T ai' ! L I T Y CLt.55 t WIND SprEDS IN hETEPS ped SECO n sei:9 f"C St C Tne Itu'1C ATEi?

5ECTUR 0 13 0 45 1 10 1 97 2.f;

• .4%

• .91 9.90 13,00 7"T.L5 N

r).003 n.229 0 767 0.554 0.32) 0.;

7.0

a..)

1.:107 NNE 0.On5 0.369 1.h14 1.154 n.277

.. 50 0.1 0.0 0.0 4.471 NE o.095 ti.419 0.738 o.419 0.157

t. :

a...

o.o v.o 1./62 ENE o.001 0.050 0.094 0.5 0.9 e'.'

O.i o.0

..o a.141 E

0.005

's.419

o. 50 n.0 0.a 0.0 ti. 0 o.o 0.*73 ESE 3.002 c.1*n 0.c90 n.o o...

v.*

u..'

u.o.

o.o 0.43t SE u. o ra j 9.229 o.e90 0.n a.a

..a

.1. 1 n.n a.o 7.372 55E o.001 0 050 0.41'8 6.090 0.16a

".119 d..$ 5 a 00

-i.o c.?Ji 5

0.004 0.329 1 485 0.538 0.oGJ n. 3 2 *J o.o50 0.0 v.0

2. t. 4 3 55W o.004 0.279 2.741 1.766 0.559

'.149 0.o50 00 0.0 5.580 Sd n.nn2

'1 119 2 133 1.706 0.447 9.139 09 09 00 4.23h W5W u 003 'o.229 0.730 0.550 0.1:# d 5.140 0.9 0.0 0.0 1.c57 W

0.002 0.1*o 0.555 0.229 0.141

".oic 0.0 0.0 0.0 1 16e WNW 0.0n2 U.1.19 0.J29 0.0 0.053 o.D 0.0 0.0 a.0 n.57v Nw 0.003 0.229 0.419 0.189 0.0$J

0. fi O.0 0.0 p.0 3.190 hNW J.002 0.199 0.690 0.229 0.229 v.090 00 0.0 00 1.*37 TOTALS 0.047 3.678 13 228 7.755 2.7ol 1.226 0 150 0.0 0.0 28.o*5 i

l S T A54 t L I T Y CL451 F N!ND SrsF05 Its "t TEPS OFR SELO'4D F4f? T* SFCTdRS INDICATED SECTOR 0 13 n.*5 1.10" 1.99 2.c3

• .*S

$.V1

'*. 5 9 13.00 TUTALS N

0.007 0.169 0 508 n.189 c.053 "."

0.g 0.0 ti e r 95, NME u.np4 1.6om

.2.

91 0.3o9 0.0 e..'.

u.a ti. 0 se.o 3. *> 9 7 I'

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0.r.

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• .o u.ra 0.0 0.0 r.

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's.011 0.279 0 229 0.0 0.0

• .o c.o 0.0 it. 0

f.. > 1 2 l

ESE 9.or7 9.189 0.o 0.0 o.o e..o 0.0 0.0 u.o 1.19 5E 9.005 c.140 0.050 0.0 0.0 0.0 0..'

O.0 a.n r. l i e.

SSE o.013 =0.329 0 229 0.0 0.0

'.4 0.0 0.0 0.0 t'.371 5

0.013 t'.329 u.469 0.6 0.0 n. r' -

0.c 0.0 u.o

o. ole i

SSW u.nla

r. 4t,9 1.764 0.010. 0.0 0.0 0.c 0.0 o.0 2.s41 SW u.on7 o.18 8 1.396 0.729 o.4

. r' O. r, 0.0

.i. o 1.121 WSW u.005 0.140 0 279 0.229 0.05J i.1 0.0 0.0 0.0 0.703

-W 0.004 0.090 '0.050 '0.0 0.0 ti. 0 0.0 0.0 0.0 0.146 WNW 0.0 0.0 0.0 0.0 0.0 e.0 00 0.0 0.0 0.0 Nd 0.004- 0.090 0 329 0.n50

.0.0 c.6 0.0 0.0 0.0 0.472 N4W 0.0 0.0 0 140 0.140 0.0.

o.0 0.9 0.0 0.0 0 279

' TOTALS 0 130 '3.549 9.619 1.575 0.103

".0

0. 0 '

O.0 0.0 16.980

.~ TABLE 4 (CONTINUD) g g ( M jgll m

4 STAT!LITY CLASS G d!ic SPEEDS !*. f'iTE45 PFR SFLD:43 ' d'N TwE 5FCT08.5 INSICATED S E C TD8t 0.13 p.65 1.10 1 99 2 83 6.65

^.91

. 5 9 11.30 TufAL5 N

u.001 0.050 0.050 0.0 0.0

~ >. "

0.0 0.0 a.o J.101 NhE o.003 n.160 0.437 0.0 0.0 c.0 n.3 v.0

c. m NE 0.006 0.279 0.648 0.0 n.3

'.o 0.3 0.0 0.0 e. 'J 3 3 ENE 3.no4 0.189 0 169 0.3 c.9 o.o 00 0.0 00 u.J9s E

v. t>05 0.249

0. 5 0 0.0 0.n a.o G. to D.n

.10

• • . 4 6s

'ESE u.co2 0.090 0.050 0.6 0.o o.h c.J 0.0 0.0

0. lu SE 0.002 0.090 C. o S t.

0.0 0.0 J.o n.3 0.0 a.0 v.162 SSE 0.007 0.329 C.189 0.0 0.0 8.y 0.0 0.0 st.0

';. 3 2 2 5

u.012 c.558 0.508 0.0 0.0

... r c.o n.o o.0

1. t,7 9 55w o.001 0.050 0.r 98 0.090. o.0 o."

0. t.

0.0 u.o o.b3n Sw o.O c.0 0.698 c.508 0.0

• n 0.0 0.0

-i.0

1. 4 9 e-w5m o.001 0.050 0.i79 0.o00 0.0 a. :.

0. t-0.0 u.0 0.37o W

0.002 0.090

0. t:50 0.6 0.0 o.'r c.o 0.0 u.o 0.164 WNW o.O n.0 0.0 0.0 0.0 a.c 0.0 0.0 0.0 v.o NW 0.0 0.0 0.050 0.0 0.0 0.0 0.0 0.0 0.0 0.054 NNW u.002 n.090 0.0 0.0 -

0.0 e.e 0.0 0.0 0.0 0.097' TOTALS t,. 04 u 2.233 4.296 0.682 0.0 o.*

0.a 0.0 o.0 7.263 O

v -.

y r--

w

-w

-r

TABLE 5 SEQUOYAH NUCLEAR PL,

- INDIVIDUAL DOSES FROM GASEOUS EFFLUENTS - FIRST QUARTER 1980 i

Effluent Pathway Guideline

• Po int Dose Noble gases y Air dose 10 Max.'Emm.1 0.0 mrad 8 Air dose 20 Max. Exp.1 0.0 mrad 2

8 Total body 5

Residence 0.0 mrem z

8 Skin 15 Residence 0.0 mrem Iodines /Particulates Thyroid 15 Real (critical organ)

Pathway 0.0 mrem 8

Breakdown of Iodine / Particulate Exposures (mrem)

Child Adult Vegetable Ingestion 0.0 0.0 Beef Ingestion!

0.0 0.0 Inhalation 0.0 0.0 Ground Contamination 0.0 0.0 TOTt.L 0.0 0.0

• These 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 f rom air submersion.

-3.

Receptor is at 1980 meters in the SSW sector.

TABLE 6 SEQUOYAH NUCLEAR PLANT - INDIVIDUAL DOSES FROM CASEOUS EFFLUENTS - SECOND QUARTER 1980 Effluent Pathway Guideline

• Point Dose Noble gases y Air dose 10 Max. Exp.*

1.82F-ll mrad 6 Air dose 20 Max. Exp.3 1.34E-07 trad Total body

• 5 Residence 0.0 mrem 8

2 8

Skin 15 Residence 0.0 mrem Iodines /Particulates Bone 15 Real 1.90E-02 tree 8

(critical organ)

Pathway Breakdown of Iodine / Particulate Exposures (arem)

Child Adult Vegetable Ingestion 1.87E-02 8.71E-03 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 SThese are-the annual guidelines per unit defined by Appendix 1 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.

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I

ERRATA SHEET FOR RADIOLOGICAL IMPACT ASSESShT;T - SEQUOYAH ';UCLEAR PLANT JANUARY-JU';E 1980 1.

Page 3, Direct Radiation, paragraph 2, line 2 ' c.xtre:m" should read

" external."

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

~

3.

Page 4, Dose Sum =ary paragraph 1, line 5 "7x10 " and 3x10 s srem" should read "2.2x10 g and 5.2x10-1 mres."

4.

Table 6, Effluent-Eliminate the words " Noble gases." The listed doses result from releases of radiostrontium.