ML19319C616
| ML19319C616 | |
| Person / Time | |
|---|---|
| Site: | Davis Besse  |
| Issue date: | 08/09/1978 |
| From: | Cohen L NRC OFFICE OF INSPECTION & ENFORCEMENT (IE) |
| To: | Drage D AFFILIATION NOT ASSIGNED |
| Shared Package | |
| ML19319C617 | List: |
| References | |
| NUDOCS 8002191060 | |
| Download: ML19319C616 (15) | |
Text
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AUG B 1978 D
M vW Mrs. Devid J. 3 race 605 Main Street E' ne F g M-D f
Mones, IL 50449 1
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Dear Mrs. Drage:
In reference to your letter dated August 4th requesting infort.:ation on airborne radioactivity neasurcents near Davis-Bassa, I am enclosing the appropriate secticns of the 1977 Annual Repcrt for the Davis-Sessa
- ucicar Portar Station. The 1977 hin.;al ?.eport contains the most current published data.
Davis-Bessa Unit 1 tras lo: dad wita fuel in.bril 1977.
It achieved initial criticality on Auaust 8,1977 and reachea fifty percent opera-tional capacity on December 1977.
Therafora, the saclosad data, covering January to Decer,ber 1977, are essentially background reasure-acn ts.
Unforten:tely, I cannot provida you uith the. rau dta. Uadcr tnc conditions of thair license, the Utility is req.Aico to sun arize tia:
data in the famat presented in Table 5 of tne enclosur2. To V:la you understand the results. I have also enclosed the license's discos-sion of the results of the airborne ocasure ents and sa!@ ling loc.itions and mcps.
I hope this infomation will be of help to you.
Sincerely, (5 /
Lawrence K. Conen, Ph.D.
Haalth Physicist Division of Fuel Facilities and Matarials Safety Inspection Office of Insoection and Enforcement
Enclosures:
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Table 5.
(continued).
Hamo of f acility Davin-penso Nuclear Power Station.
Indicator Location with liighest Control Gnmple Typo and Inca t.lon a Annual Itcan Locations Number of Typo Htumber of i
!!can (r)"
Hean (l')
Henn(F) non-routine 3
D C
(Units)
Analynon LLD flange Incationd llange Itange Ito s ul t s' Airborno I-131 542h 0.02 0.02'(4/295)
T-4 0.8 S 0.05 (1/48) 0.02 (1/246) 0 todine Tr.D casuna 156 2
15.8 (81/04)
T-24 24.9 SE 21.9 (12/12) 18.4 (72/72) 0 nmthly (mren)
(9. 7-2 3.1 )
(19.3-24.2)
(12.8-24.2) quarters TI.u canuna 52 2
15.1 (28/28)
T-24 24.9 SE 21.6 (4/4) 17.9 (24/24) 0 I
Quarterly (10.1-22.6)
(16.4-24.1)
(12.3-24.1)
(inre#quartor) 1 Milk I-131 58 0.5 2.55 (4/19)
T-24 24.9 SE
- 11. 3 (5/19) 7.6 (9/39) 0 (giCl/1)
(0.5-4.1)
(1. 6-2 3.9 )
(1.4-23.9)
Sr-89 53k 1.4 2.57 (6/17)
T-24 24.9 SE 3.4 (6/18) 3.01 (9/36) 0 (1.44-3.7)
(1. 6-9. 3)
(1.6-9.3)
I Sr-90 49 1.2 1.76 (14/17)
T-24 24,9 St!
2.34 (15/18) 2.13 (23/32) 0 (1.25-2.47)
(1.51-4.0)
(1.28-4.0) y scan 54 K-40 35 1291 (18/18)
T-B 2.7 WSW 1291 (18/18) 12G6 (36/36) 0 (1166-1359)
(1166-1359)
(1014-1404)
Ca-137 3.8 5.1 (3/10)
T-24 24.9 SE 5.5 (1/10) 5.01 (7/36) 0 (4. 5-5. 7)
(3.9-6.5)
Ba-140 3.7
< Lt.D
<LLD 0
(g/1)
Ca 54 0.01 1.23 (18/18)
T-8 2.7 WSW 1.23 (10/18) 1.22 (36/36) 0 (1.08-1.54)
(1.08-1.54)
(0.96-1.54) 9 9
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Table 5.
(continued)
Hamo of facility Davis-Dcoso fluclear Power Station.
CS = grous beta, SS = susponded polids, DS = dissolved solido, Tit = total teelduo.
I*
LLD = nominal lower 11 mitt of detection baned on 3 sigan counting error for background samplo.
8 Non based uguan. dotectable ancasurenuntu only.
Fraction of dotectable peasurements at specified locations is indicated in parentheoca (r).
d locations are epocified by station codo (Tablo 1) and distanco (miles) and direction relativo to reactor site.
IJon-routino renults are those which exceed ten times the control station value.
I f Two collection purlod with lot's results (0.001 pci/m3 and 0.090) havo been excleaded in the datormination of the means and rangen of ytoss bota in al'c particulates. Thoue results were unrollablo due to apparent pump analf unction.
9 Quarterly compoultes at all saq>ples f rom ludicator locations and control locations woto gamma scannod acparately.
Thus, the location wi th tho highest annual unan cannot bo lisent i fied.
h l
.ru n results (aeven of (0.03 pC1/m ; two of (0.04, and one of (0.29) have bqen excluded in tho determination of the moano and s anges of al thorno lodino-131. These results have been excluded duo to apparent pump snalfunction.
1
.ggo lodino-131 soautta ( < 0. 8, <!.3 pCl/1) have been excluded. Thenu hlyh values aro duo to low chemical recoveries, k
Ono atsontium-09 ausult (<5.0 pcl/1) has been excluded. This high valuo is duo to a low chemical recovery.
1 Flvo otsuntium-90 results
(<4.0,
( 3. 7, (1.9,.(1.4, (2.4 pcl/1) havo been excluded.
'lhese high values are due to low chemical secovetico.
88 Flvo uttontium-90/Ca ratloa (<3.20, (3.46, (1.64, (0.91, (2.20 pC1/g) have boon excluded. 'llacso ratios are not tellablo duo to low chomical tocovorico in the attontium-90 analyaos of these samples.
sn The Co-137 tesulta havo been d'.lded into two groupa.
The first conalsts of aanples f rom the first semi-annual collection period, wlilla thn second 9 oup conslato of samples from the second semi-annual period. Thlo div!alon was mado becauso wolghts of camplos f rom the second group were approximately ono-third those of tJia first group.
O Tho bottom cediment aappio collected on 27 Octcher 1977 conslated almost entirely of rocks and the results obtained are not rollable. Ilepoated samplings yle1ded only rocks.
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. NALCO CNVI ACNMENTAL CCIENCE3 B.
Census of Milch Animals In ce=pliance with the Environmental Technical Specifi-cations for the Davis-Besse Nuclear Power Station, the annual census of milch animals was conducted on 18 Decerber 19 77 by' plant person-nel.
There were no known goats within a 15 mile radius of the station.
Cow herds counted were :
Moore Farm, 2.7 miles WSW of the station, 40 cows; Daup Farm, 5.4 miles SGE of the station, 25 cows ;
and Gaetes Farm, 5.5 miles WSW of the station, 30 cows.
The ". core and Daup farms are indicator location T-8 and control 1; cat.icn T-20, respectively.
C.
The Air Environment 1.
Airborne Particulates Gross beta measurements yielded annual means that were slightly higher at the five control locations (0.161 pCi/m )
3 than at the six indicator locations (O.151 pCi/m3).
The location with the highest annual mean (0.176 pCi/m ) was control location 3
T-12, 23.5 miles M;W of the station.
Gross beta activities at all locations were also statistically analyzed by mcnths and quarters.
The highest aver-ages were for the month of June and the second quE.*. er.
Tr.ese results are censistent with the occurrence of che usual world-wide
" spring peak" in gross beta activity which, is believed to be due to radioactive debris in the stratosphere (Gold et al,1964; Wilson et al, 1969).
This spring peak was observed at monitoring locations throughout the United States (U. S. Environmental Drotection Agency, 19 77a).
Its pronounced size in 1977 is probably due to radioactive 13 e
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==
debris injected into the stratolpPlere by the Chinese atmospheric nuclear test conducted un 17 November 1976.
Debris from this test are expected to influence ground level air particulate activi-ties for several years (U. S. ' Environmental Protection Agency,1977b).
Gross beta activity attributable to the Chinese atmospheric nuclear test conducted on 17 Septerter 1977 was ob-served at all locations and reached its maximum level during the week of 26 September to 3 Octcber 1977.
The maximum gross beta activities were slightly lower than those observed during the spring peak.
Gamma spectroscopic analysis of quarterly.:cmposites of air particulate filters yielded nearly identical results for 2.ndicator and centrol locations.
The predominant gamma-emitting isotope was beryllium-7 which is produced ccatinuously in the upper atn., sphere by cosmic radiation ( Arnold and Al-Salih,1955).
Trace amounts of zirconium-95, niobium-95, ruthenium-10 3, ruthenium-196, ces>um-137, and cerium-144 were also detected in some sa.Tples.
Activities of these isotcpes reached their highest levels during the second quarter and then decreased for the remainder of the year in-diceting that residual f'allout from nuclear detonations in 1976 was brought down during the annual spring peak.
Both strontium-89 and strontium-90 activities were nearly identical for quarterly composites for cont ol and indicator locati y.s.
Neither was detected in the first quarter composites.
Activ ties of both strontium-89 and stronts um-90 reached their
' maxima in the second quarter and gradually decreased during the b
14
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s e
remaining two quarters.
2.
Airborne Iodine Weekly levels of airborne iodine-131 were equal to or below the lower limit of detection (LLD) o f 0. 02 p'Ci/m3 throughout 1977.
Only five of 542 samples yielded detectable results 3
of 0.0210. 01 pCi/m, which, when compared with the LLD of 0.02 pCi/m3, are not concidered to be significant.
3.
Ambient Gamma Radiation Monthly TLD's at the indicator locations measured a mean equivalent dose of 15.8 3.8 rzem/91 days at indicator locations and a mean of 18.4 2.9 mrem /91 days at control locations.
These results were in agreement with the values obtained by quarterly TLD's.
The highest annual.means for monthly TLD's (21.9 mrem / 91 days) and for quarterly TLD's (21.6 mrem /91 days) cccurred at centrol location T-24.
The annual mean dose equivalent for all locations measured by monthly and quarterly TLD's was 16.8 rzem/91 days.
D.
The Terrestrial Environment 1..
Milk A total of 60 analyses for iodine-121 in milk were performed during the reporting period.
All samples collected before October (42) contained less than 0.5 pCi/1 of iodine-131 with the exception cf two samples with elevated minimud sensitivities
(<l.3 and <0.8 pCi/1).
The elevated minimum sensitivities were caused by poor chemical recoveries.
Fallout from the most recent Chinese weapons test first appeared in sa=ples ecliected en 3 Cetober 1977.
Iodine-131 levels ranged from 2.2 to 9.0 pCi/l and exceeded the I
15
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I N A t.CO ENVIRONMENTAL SCIEt4CES DIVISION NORTHonOOK, ILtlNOIS 60062 eV
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Sampling locations on the si te periphery of tlie Davin-Desse Nuclear Power Station.
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NALCO CNVIRONMENTAL GCIENC2E3
^
Table 1.
Sampling locations., Davis-Besse Nuclear Power Station, Unit No. 1 Type or.
Code Incationa Iccation T-1 I.
Site boundary, 0.6 miles NE of station, near intake canal.
T-2 I
_ Site boundary, 0.9 miles E of station.
T-3 I
Site boundary,1.4 miles SE of station, near Toussaint River and storm drain.
T-4 I
Site boundary, 0. 8 miles S of station, near Iccust Point and Toussaint Pive r.
T-5 I
Main entrance to site, 0.25 miles W of station.
T-7 I
Sand Beach, 0.9 miles N:M of site.
T-8 I
Earl Moore Farm, 2.7 miles WSW of site.
T-9 C
Oak Harbor, 6.8 miles SW of site.
T-ll C
Port Clinton 9.5 miles SE of site.
T-12 C
. Toledo, 23.5 miles W:M of site.
T-17 I
Irv Fick's well onsite, 0.7 miles SW of site.
T-20 C
Daup Farm, 5.4 miles SSE of site.
T-23 C
Put-In-Bay Lighthouse, 14. 3 riles ENE o f site.
T-24 C
Sandusky, 24.9 miles SE of sire.
T-25 I
Miller Farm, 3.7 miles S of site.
T-27 C
Magee Marsh, 5. 3 miles WNW of site T-28 I
Unit 1 treated water supply, onsite.
T-29 I
Lake Erie, intake area, 1.5 riles NE of site.
T-30 I
Lake Erie, discharge area, 0.9 miles ENE of site.
T-31 I
Onsite.
T-32 I
Land, within 5 miles radius of site.
~26
~,
s Table 1.
(continued)
Type of Code Locationa Location T-33 I
Lake Erie, within 5 miles radia of site.
T-34 C
Land, greater than 10 miles radius of site.
T-35 C
Lake Erie, greater than 10 miles radius of si'r, T-36 I
Miller Farm, 3.7 miles S of ' site.
T-37 C
Fruit Stand, 12.0 miles SW of site.
I = Indicator locations ; C = Control locations.
o 27 e
m.
Table 2.
Type and frequency of collection.
Sampling Location Type Weekly Monthly Quarterly Semi-annually Annually 1
I TI.D TLD 2
7 I
AP AI
8 I
9 C
E 11 C
17 I
ini j
20 C
M
/
f 23 C
TLD TLD g
25 C
VE l
27 C
AP AI TLD TLD WW BS SO ji 20 I
SWU SWT 2
29 I
BS f
30 I
BS 31 I
WL SMW D
32 I
ME r
33 I
F WF Sa g
34 C
ME VE AF
. 2 35 C
P i r d
36 I
GLV 8
37 C
GLVd 0
Once overy three years.
b Semi-monthly during the grazing season, May through October.
Cattle feed collected during the 1st quarter, grass collected during 3rd quarter.
d Monthly during harvest.
I
s Table 3.
Sample codes used in Table 2.
Cdde Description AP Airborne Particulate;.
Thermoluminescent Dosimeter - Monthly TLD (Q)
Thermoluminescent Dosimeter - Quarterly SWU Surface water - Untreated SWT Surface water - Treated (tap)
WW Well water (Ground Water)
BS Bottom Sediments SO Soil M
Milk ME Domestic Meat s
WL Wildlife Fish
?
l 1
VE Fruits and Vegetables I
SMW Smartweed AF Animal Feed (silage, grain, grass)
WF Waterfowl ST Snapping Turtle GLV Green Leafy Vegetables
.l 29
w Table 4.
Sanpling summary.
Collection thinber of tiunJ>e r o f Sample Type and Nunber of Sangelen Sonples Typo Fre<1unneya locations Collected Mluned Remarks Air Divironneset ATiboine particulates C/w 11 564 19 See text p. S Alstorno lodino C/w 11 552 31 See text p. 3 ;
TLD's C/H 13 15 t>
0 C/0 13 52 0
Torre strial Divironment I
MilGEtFnoct.)
G/SM 3
36
+6 Six extra sampics, j
(flov. - Ap r. )
C/M 3
18 0
See text p. 15 Gr otuidwate r C/0 3
12 0
R Edible n: cat 2
- a. lxnnestic meat G/SA 2
4 0
- b. Wildt!fo G/SA 1
2 O
33 (uno species) y
- c. Hatertowl C/A 1
1 0
2
- d. Snapping turtle C/A 1
1 0
g Fruito and Vegetables G/SA 3
13 41 1 extra (two varlotics from M
- 8 variety cacti location) 2 D
f G men I.cafy Vogotables C/M 2
6 0
(< luring harvest scaoon) f-An tmal-wi Id11 to feed g
- a. Cattlo feed C/A 2
2 0
Collected 1st Q g
- b. Grass C/A 2
2 0
Collected 3rd0
- c. Smartweed C/A 1
1 0
N Soll C/3Y 11 11 0
2 fl kluat ic Environnent M
Treated sierfaco water G/WH 3
154b 2
See text p.
10 b
Unitreated surf ace water G/HH 3
139 17 See text p.
9 b
~
G/itM 1
51 g
Flah (two specteel C/SA 2
8 0
Dottom aedinenta G/SA 3
6 0
Type of collection is coded as followse C/ = continuouss C/ = grab.
Faciguency la coded as follows: /HM = hourly grab composited nunthlys /WM = weekly grab composited monthlys /W = weeklys /SH = semi-monthly /H = monthlys /Q = quarterlys /SA = semi-annuallys /A = annuallys /3Y = onco overy thico yeatn.
I2 Samples are sent to laboratory weekly.
s Maximum Permiss.:.ble Concentration of Radio' activity in Air and Watera Air Water Gross alpha 3 pCi/m3 Strontium-89 3,000 pCi/l Gross beta 100 pCi/m3 Strontium-90 300 pCi/l D
Iodine-131 0.l'4 pCi/m3 Cesium-137 20,000 pCi/1 Barium-140 20,000 pCi/1 Iodine-131 300 pCi/l Potassium-40c 3,000 pCi/l Gross alpha 30 pCi/l Gross beta 100 pCi/l Gross betad 1,000 pCi/l Tritium 3x106 pCi/l Taken from Code of Federal Regulations Title 10, Par-20, Table II and accrocriate footnotes.
b From 10 C'FR 20 but adjusted by a factor of 700 to. reduce the dose
~
resulting from the air grass-cow-milk-child pathway.
c.A natural radionuclide, 30 FR 15 801, in footnotes 10 CF2 Part 20, Table II.
d Federal drinking water 1962, U. S. Public Health Service.
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