ML20150E939
| ML20150E939 | |
| Person / Time | |
|---|---|
| Site: | Pilgrim |
| Issue date: | 12/31/1970 |
| From: | Fix R, Rich Smith BOSTON EDISON CO., INTERNATIONAL CHEMICAL & NUCLEAR CORP. |
| To: | |
| References | |
| NUDOCS 8804040195 | |
| Download: ML20150E939 (30) | |
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PILGRIM NUCLEAR POWER STATION - g r
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O ad R na:.' d ve.U t M3 - PRE 0PERATIONAL ENVIRONMENTAL RADIATION SURVEY PROGRAM PERIODIC REPORT September 1, 1970 - December 31, 1970 A
!,J BOSTON EDISON COMPANY BOSTON, MASSACHUSETTS
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Person responsible for ICN/TRACERLAB analyses of samples & review of data 0 J e i (l
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, Person responsible for BECo program ICN/TRACERLAB Chemical & Radioisotope Division International Chemical and Nuciaar Corp.
TS 1601 Trapelo Road, Walthm, Massachusetts 02154 s; 8804040195 701231 PDR ADOCK 050 g 3 1gg7 R
l DISCUSSION OF RESUI.TS O Air Surveillance Air particulate activity declined as anticipated from the peak in June 3 ! and July to levels of approximately 0.15 pCi/m in September and October. High i values were obtained for all locations for the week ending November 10 and to a lesser extent for the previous week. In addition, the samples collected during the last week of December were high at all locations. These increases are most likely due to a-distant atmospheric nuclear detonation which occurred on October 14 and which was seen on the first and second pass over the eastern United States. The agreement between the reference site and the other stations continues to be very good. The monthly average gaena dose rates as measured using thermoluminescent dosimeters shows somewhat more variability than desired. Recalibration and the replacement of older type dosimeters during the first quarter of 1970 should max-imize the precision attainabic and permit evaluation of gamma background variability between locations. Aquatic Surveillance Domestic and recreational waters show data comparable to that from previous periods. Well water continues lowest in gross beta activity and Great Pond remains omewhat higher than the other two ponds. I Seawater values are normal. l Marine life gross activities generally appear normal as compared to previous 90 Sr and 137 Cs in Irish moss and I' values. There appears to be a general decrease of i i rockweed es compared to earlier 1970 values. The reason for this is not known. ! t j The three available fish values and the lobster values are similar to previous data. There again appears to be a wide range in the lobster numbers. O !
Reanalysis is being performed on several samples due to previously un-()noticedpoorchemicalyields. This problem has been corrected. Terrestrial Surveillance ' Milk values are generally comparable to previous data. 137 i The Cs and ' 90 Sr values appear somewhat more constant at each location than observed in earlier samples. i Gross beta, gross gamma and 137 Cs data for potatoes is similar to the O i only sample analyzed previously. sr, seen in both samples from this quarter. l J was not found in the 1969 sample. Data from the two locations compare well. Crat. berry values show little difference between bogs except for the wide ,
, range observed in the 1 Cs numbers. Earlier data showed much closer agreement.
l Cross beta values compare well between bogs, but are approximately a factor of r two higher than observed in 1968 and 1969 samples. ; Jil % n R L O The pre-operational environmental radiation survey program appears to be yielding data which will provide a firm base for comparison of operational data, t i Where variability is seen such as in marine life, the present program should establish ; general limits on this variabiitty. L No changes in the program are recommended.
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a $ TABLE IA-KEY FOR TABLES IB & IC f gg Distance and FSAR
Reference:
1 Direction From Sample Table 2.6.1-Sample Location Station DesRination Item # l i i East Weymouth 23 - miles NW EW 7 i T 4.5 - miles W-WNW PC 6 j Plymouth Center CR 4 Cleft Rock Area 0.9 - miles S i Manomet Substation 2.5 - miles SE MS 5 I WR 2 l Rocky Hill Rd. , WNW Onsite i Overlook Area Onsite OA 1 l ER 3 Rocky Hill Rd. , SE Onsite , l I i , G , 1 I 4 i i 1 l 4 4 i 1 l w
O O TABtf IB O COMPARATIVE MONTHLY VALUES FOR GROSS BETA RADI0 ACTIVITY (Concentrations in pC1/m3 ) Means Co11cetion Re ference Of f-Site On-Site Period (EW) (PC) (CR) (MS) (WR) (OA) (ER) Sept. 0.15 0.16 0.17 0.16 (a) 0.13 (a) Oct. 0.14 0.14 0.14 0.15 0.15 0.13 0.14 Nov. 0.16 0.15 0.13 0.17 0.18 0.15 0.17 Dec. 0.17 0.15 0.20 0.18 0.17 0.16 0.17 TABLE IC ! COMPARATIVE MONTHLY VALUES FOR GROSS BETA RADI0 ACTIVITY (Concentrations in pC1/m3) Ranges Collection Reference Off-Site On-Site Pe riod (EW) (PC) (CR) (MS) (WR) (OA) (ER) 1970 Min. Max. Min. Max. Min. Max. Min. Max. Min. Max. Min. Max. Min. Max. Sept. 0.11 0.21 0.12 0.21 0.11 0.23 0.13 0.20 (a) 0.12 0.14 (a) Oct. 0.11 0.19 0.11 0.17 0.12 0.17 0.12 0.17 0.12 0.18 0.09 0.16 0.10 0.16 Nov. 0.12 0.25 0.09 0.27 0.10 0.18 0.10 0.28 0.11 0.31 0.08 0.28 0.10 0.30 Dec. 0.11 0.32 0.10 0.29 0.10 0.31 0.11 0.34 0.10 0.30 0.11 0.28 0.11 0.30 (a) Not enough data to develop monthly average or composite
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I 1 1 , I I TABLE III AIR PARTICUlATES 1 Iodine-131 Activity
! (Concentrations in pCi/m 3) l Collection East Plyouuth Cleft Rcyc k Manomet Rocky 11111 Road Overlook Rocky Hill Ro.
l Period Weymouth Center Area Substation k'e s t Area East > 1 12.2 - 12.9 < 1(a) <1 <1 <1 <1 <1 <1 12.9 - 12.22 <1 <1 <1 <1 <1 <1 <1 { I i ' i l 1 i k 1 J l i (a) Fo r Ea s t k'eyr.out h 12.3 - 12 9.70 l l ) i, G G G l 1
TABLE IVA
) KEY FOR TABLE IVB Distance and FSAR
Reference:
Direction From Dosimeter Table 2.6.2-Dosimeter Location Station Designation Item # East Weymouth 23 - miles NW EW 19 Kingston 10 - miles WNW KS 17 Sagamore 10 - miles SSE-S CS 18 Plymouth Airport 8 - miles WSW SA 16 l Duxbury 6.25- miles NW SS - l l Plymouth 6.5 - miles SSW-SW CP - North Plymouth 5.5 - miles WNW NP 15 Plymouth Center 4.5 - miles W-WNW PC 14 South Plymouth 3 - miles WSW SP 13 Manomet 3.5 - miles SE-SSE MB - (x_)/ Manomet 2.5 - miles SSE MS 11 l ! Manomet 2.5 - miles SE ME 12 1 Manomet 2.25- miles ESE-S MP 10 Clef t Rock Area 0.9 - miles S CR 9 Rocky Hill Road 0.8 - miles SE ER 8 Bayshore Drive 0.7 - miles W-WNW BD - Rocky Hill Road 0.3 - miles W-WNW VR 7 l O U
TABLE IVB (~~'g M0hTHLY AVERAGE DOSE RATE ("} (/ uR/hr Off-Site Station Sept. Oct. Nov. Dec. East Weymouth (EW) 7.5 6.6 9.1 7.0 Kingston (KS) 8.9 7.1 7.1 6.7 Sagamore (CS) 7.1 8.4 10.5 7.9 Plymouth Airport (SA) 7.0 8.9 7.4 6.0 Duxbury (SS) 6.4 8.6 8.9 7.5 Plymouth (CP) 7.3 7.6 7.6 7.3 North Plymouth (NP) 8.0 9.6 10.8 10.0 Plymouth Center (PC) 6.6 5.3 9.7 6.5 South Plymouth (SP) (b) (b) 10.9 6.9 Manomet (MB) 5.3 (c) 8.6 5.3 Manomet (MS) 7.4 8.0 9.7 8.3 Manomet (ME) 9.6 11.9 9.9 9.6 /N Manomet (MP) 6.1 6.8 7.4 6.0 O Clef t Rock Area (CR) 7.1 9.4 9.6 6.8 Rocky Hill Rd.-SE (ER) 7.1 7.4 13.1 7.8 Bayshore Drive (BD) 7.5 9.7 11.2 7.1 i Rocky Hill Rd.-WNW (WR) 7.0 8.6 9.2 9,3 l l l (a) Net dose rate after subtraction of 6.6 uR/hr dose rate inherent in dosimeter. (b) No dosimeter during period. 3 (c) Dosimeter destroyed. 4 i l l (
TABLE IVC ( KEY FOR TABLE IVD Distance and FSAR
Reference:
Direction From Dosimeter Table 2.6.2-Dosimeter Location Station Designation Item # Overlook Area 0.03 - miles S OA 2 Public Parking Area 0.07 - miles N-NNE PA 3 Rocky Hill Rd. , SW 0.12 - miles SW A Rocky Hill Rd. , SSE 0.26 - mi}es SSE B 5 East Breakwater 0.26 - miles ESE EB Microwave Tower 0.38 - miles S MT 6 Property Line 0.33 - miles ESE-SE C l l Property Line 0.34 - miles SE HB ! Property Line 0.89 - miles SE-SSE WH Property Line 0.68 - miles SE-SSE EM Property Line 0.75 - miles SSE-S E Property Line 0.21 - miles SSW H 4 Property Line 0.20 - miles WSW G Property Line 0.14 - miles W I 1 i Prop rty Lire 0.12 - miles NW F l I Property Line 0.17 - miles NNW D 1 O
e TABLE IVD MONTHLY AVERAGE DOSE RATE (a) uR/hr On-Site Station Sept. Oct. Nov. Dec. Overlook Area (OA) 7.0 5.8 7.5 6.7 Public Parking Area (PA) 7,4 9,1 7,7 8,1 Rocky Hill Road (A) 7,2 (d) 11,7 7.9 Rocky Hill Road (B) 8.8 (d) 9.8 9.4 East Breakwater (EB) 9.1 9.7 9.5 8.0 Microwave Tower (MI) 7.4 63 9.5 7.0 Property Line (C) 8.2 10.1 10.0 7.3 Property Line (HB) (b' (b) 11.6 6.8 Property Line (WH) (.7 (c) (e) (e) Property Line (EM) /.1 8.8 7.8 8.2 Property Line (E) 6.4 5.4 7.1 6.5 Property Line (H) 8.3 8.2 10.7 7.8 Property Line (G) 6.6 10.3 8.8 9.4 Property Line (I) 6.5 11.4 8.4 8.2 Property Line (F) 11.8 (d) 11.8 8.1 Property Line (D) 11.4 (d) 11.8 10.5 I (a) Net dose rate after subtraction of 6.6 uR/hr dose rate inherent in dosimeter. (b) No dosimeter during period. (c) Dosimeter destroyed. (d) Dosimeter stolen. (e) Awaiting approval for new location, j l l l l
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TABLE VA O KEY FOR TABLE VB Sample Distance and Direction Sample Location Designation from Station Great Pond
- GP 24 - miles WNW-NW Little South Pond
- SP 4.75 - miles W College Pond CP 6.5 - miles SSW-SW Lout Pond Well* LW 4.75 - miles W Manomet Well* MW 2.75 - miles SSE f
- Designated in FSAR, Sect ion 2.6.3.1 O
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TABLE VB O DOMESTIC" D RECREATION WATER Collection Analysis Period CP SP CP LW %* Cross Bets Sept. 6.721.0 4.7 1 1.0 4.4 ! 1.0 < 1. 0 < 1.0 (pCi/L) Oct. 5.6 2 1.0 4.0 1 1.0 4.0 ! 1.0 < 1. 0 < 1.0 Nov. 6.5 ! 1.0 5.8 t 1.0 4.3 ! 1.0 < 1. 0 < 1.0 Dec. 5.9 1 1.0 3.4 2 1.0 (b) < 1.0 < 1.0 Gross Camma Sept. < 10 < 10 < 10 < 10 < 10 (cpm /L) Oct. 11110 12 1 10 < 10 < 10 < 10 Nov. < 10 < 10 < 10 < 10 < 10 Dec. < 10 < 10 (b) < 10 < 10 Sr-90 Sept. 1.5 2 0.5 2.3 1 0.5 1.6 1 0.5 < 0. 5 < 0.5 (PC1/L) Oct. 1.4 i 0.5 2.0 1 0.5 1.6 ! 0.5 < 0.5 < 0.5 Nov. 1.2 2 0.5 1.5 0.5 0.7 1 0.5 < 0. 5 < 0.5 Dec. (c) (b) (c) (c) (c) H-3 Sept. < 2.5 < 2.5 < 2.5 <?5 < 2.5 (pci/mi) Oct. < 2.5 < 2.5 < 2.5 < z.5 < 2.5 Nov. < 2.5 < 2.5 < 2.5 < 2.5 < 2.5 Dec. < 2.5 < 2.5 (b) < 2.5 < 2.5 I-131 Sept. (a) (a) (a) (a) (a) ) IP I (a) (a) Oct. (a) (a) (a) Nov. <5 <5 <5 <5 <5 Dec. <5 <5 (b) <5 <5
- One (1) cpm is equivalent to 4.5 pCi if activity is assumed due to Cs.
(a) Sample not analyzed for this radionuclide. (b} 1ake frozen ; sample unobtainable (c) Analysis in process
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. / s O '/
/
0.01
- I 8 68 11-69 5-70 6-70 9 70 9 70 11 70
- Below detection limit of 0.005 pCi/gm l
\
,,,,,_..._,,_,,,____,___.,_,______-! l
FIG. 5B : RADI0 ACTIVITY IN MARINE LIFE (IRISH MOSS) 0 Gross Beta (pCi/gm) use right ordirmte to read . O are 6t-e e Gross Gamma-(cpm /gm)
*---e Strontium.90 (pCi/gs): use left ordinate to read gross gamma and Sr-90
_10.0 9 3 O i 0.1 _1.0 ; l b l \\
/ \
/ \
/
\
I
\ l
/
O l - 0.01
- 9-68 10-69 6-70 6-70 10-70 11-70 11-70
*Belowdetectionlimitof0.005pci/gm
FIG SC : RADIOACTIVITY IN MARINE LIFE (FLC'JNDER) e : Gross Beta (pCi./gm) O 1.0 r k)/ 0.1 e 3 Gross Gamma (cpm /gm) l l 1 l l O l 0.01 9-6P -69 4-70 7 70 9 70 10-70 11-70 11-70 , l l
_ _ _ _ _ . . . . . . _ _ . - . _ . .- . - _ _ . _ _ _ _ . _ . . . _ . _ . . _ . . . _ . ~ . - . . _ . _ - . _ ._ . . _ _ _ .__ . . . . ._ FIG. 5D t RADIOACTIVITY IN MARINE LIFE (COD & MACKEREL) COD MACKEREL T
- ? : Gross Beta (pCi/gm)-
1.0 4 i !O l I l i 1 0.1 0 0 . Gross Gamma (cpm /gm) c * .l 4 l 1 1 0 4 3 0.01
- 8.68 8 68 9 70 11 70 8.68 9 70 11 70 i
*Below detection limit of 0.01 epm /gm
R) ( (G)
?
TABLE VIII SILT
~
Collection Gross Beta Cross Camma Location Date pCi/gm cpm /gm Pilgrim Site 11.30.70 7!2 0.82 0.01 Gamma Spectrum Analysis Naturally occurring K constituted the majority of the activity. Peaks seen aad the probable nuclides present are as follows: Camma Energv(MeV) Probable Nuclides 0.22 Pb 0.35 Ac, 'Pb 0.58 08T1,214 3i . 228 0.94 Ac 1.15 I'Bi Og 1.46
'14 1.77 Bi = One (1) cpm is equivalent to 4.5 pCi if activity is assumed due to Cs.
O e. 4-ww
O O O . TABLE IX 1 ! MILK ' l (Concentrations in pCi/L) Collection Sampling Locations Analysis Period Hingham Plymouth Bridgewaty l Cs-137 Sept. 16 1 17 1 15 1 1 Oct. 12 1 17 1 13 i 1 f Nov. 17 1 1 20 1 (a) Dec. 20 1 1 17 1 1 10 1 S r-90 Sept. (a) 6.1 ! 0.5 (a), ' Oct. 6.8 10.4 1 0.5 0.5 10.7 0.5 j Nov. 8.1 1 0.5 6.0 1 0.4 11.4 0.5 ; j Dec. (b) (b) (b) i ? I I-131 Sept. <5 <5 <5 f Oct. <5 <5 <5 i Nov. <5 <5 c5 j Dec. <5 <5 <5 i i
,! Ba/La-140 Sept. <5 <5 <5 l Oct. <5 <5 <5 i
i; Nov. <5 <5 <5 Dec. <5 <5 <5 f i
- (a) Re-analysis in process .
(b) Analysis in process
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( ) (" TABld'X CROP _S l Sample Collection Cross Beta Gross Gamma
- SO Sr 137 Cs Type Location Date pC1/gm cpm /gm pCi/gm pCi/gm Potatoes Plymouth 9.9.70 5.3 ! 0.2 0.05 0.01 0.011 0.005 < 0.05 1
Potatoes Bridgewater 9.11.70 6.4 2 0.2 0.04 2 0.01 0.013 0.005 <0.05 Cranberries Bog A 9.11.70 2.2 0.2 0.04 ! 0.01 0.060 0.005 0.07 ! 0.05 C ranberries Bog B 9.9.70 2.1 ! 0.2 0.05 ! 0.01 0.093 1 0.005 0.18 ! 0.05 C ranberries Bog C 10.6.70 1.7 0.2 0.04 0.01 (a) 0.20 0.05 Crange rries Bog D 9.11.70 1.7 2 0.2 0.03 0.01 0.063 0.005 0.11 ! 0.05 Cranberries Bog E 9.17.70 2.0 0.2 0.07 2 0.01 0.071 ! 0.005 0.37 ! 0.05 Cranberries Bog F 9.17.70 2.1 0.2 0.05 ! 0.01 0.087 ! 0.005 0.40 ! 0.05 Cranbe rries Bog C 9.22.70 1.6 ! 0.2 0.04 ! 0.01 0.075 ! 0.005 0.19 ! 0.05 (a) Re-analysis in process
- One (1) cpm is equivalent to 4.5 pCi if activity is assumed due to Cs.
i l 0 - l i l l 1 ERRATA Gross gar:ma values for fish from 1968 were incorrectly reported in Table VII of the "Su= mary Report through August 31, 1970". Table VII in that report should be replaced with the attached table. l 1 O l 1 l
m 1 1 1 1 1 1 1 ) 1 1 1 1 1 ng 1 1 1 1 Z/ a i 0 0 0 0 0 0 0 0 0 0 0 ( 0 0 0 0 0 C < < < < < < < < < < < < < < < < p
,j f\
o C mg 1 1 1 1 1 1 1 1 1 1 1 ) 1 1 1 1 1
/ a
- i 0 0 0 0 0 0 0 0 0 0 0 ( 0 0 0 0 0 C < < < < < < < < < < < < < < < <
p ng m ) ) ) ) 1 1 1 ) 1 1 1 1 1
) 1 1 1 M/ a a a( a( a ( a 1 ( 0 0 0 ( 0 0 0 ( 0 0 0 0 0 C < < < < < < < < < < <
p 8 5 5 6 1 0 0 0 1 1 sg m 5 5 5 5 5 0 5 0 O 5 0 0 5 5 5 5 ) 0 C/ 0 0 0 0 0 0 0 0 0 0 i 2 a ! i ! 1 0 0 0 0 0 0 ( 0 C 0 0 0 0 0 9 9 < 3 4 p < < < < < < < < < < 0 0 3 7 6 0 0 0 0 0 5 5 5 5 5 5 5 5 5 _ 0 0 0 0 0 0 0 0 0 _ 0 0 0 0 0 0 0 0 0 _ m 5 0 0 0 5 5 5 5 0 5 0 5 0 0 0 0 rg 0 0 0 0 0 0 ) 0 S/ 0 1 2 ! 0 0 0 0 0 1 a 0 1 1 1 1 i ( C 0 8 9 21 0 0 0 0 6 0 5 0 3 7 8 2 3 < 60 10 1 1 p < 2 3 < < < < 0 0
< 0 0 0 .
0 0 2 s . 0 0 0 0 0 0 0 0 0 C _ E I F - I I L
- o a 3 1 0 0 0 0 1 1 3 3 3 3 1 0 0 0 0 0 0 0 1 1 3 1 0 0 0 0 1 1 1 1 0 0 t
DevN B L I m m am 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 d e u A R Gg _
! ! 2 t 1 1 ! ! 1 2 ! 2 T A / t 2 1 d
M sm sp 2 1 3 4 4 7 7 6 0 7 4 4 9 6 5 7 6 e oc 0 0 0 0 0 0 0 0 1 0 0 1 0 7 1 0 0 m _ r u G 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 s _ s a s 6 i a 8 2 4 2 2 t 1 2 2 2 2 3 2 3 7 2 5 y em B g 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 t _
! i _
/
si 1 1 2 2 2 1 2 ! 1 2 1 ! ! 1 2 i v _ sC 0 t oP 4 3 7 1 3 2 2 5 0 2 1 5 2 9 2 0 . r 1 c G 0 4 1 2 3 3 6 2 4 2 4 8 6 6 1 4 4 a _ f - i n i e _ o 9 C d _ 6 0 0 p i i 8 9 0 0 8 8 8 8 9 t e 6 6 7 7 6 6 6 6 6 0 0 8 7 7 0 0 l ct 7 7 6 1 7 7 5 c u ea 7 7 5 9 7 7 9 0 7 2 9 9 _ n l D 2 1 1 2 2 2 1 1 1 2 1 2 1 1 4 _ l 1 1 . 0 o 8 1 5 6 8 8 8 9 1 4 7 9 1 6 6 4 4 o si . t - C h t t n e r t t t t t t l o n et n n n n e t e te e e n e et a f i t t i i i i t t t t i t v n o i n n o o o o i i i i i n o i i i d o P S i i P P P P S S S S S i P S S u q z e o o o i t t m P P t t t t mmm m m P t mm e y a e i e e e e i i i i i e i i l r r y m r r s a c o o o o g g rg r r m m m m m r y y g g o o g k k g g k o i n a L n l c c n n n n l l l l l c n l i i l m a i o o a a a a i i i i i o a p M P R R M M M M P P P P P R M P P t c o n
)
(Q s s s s s s s s ( 1 e m l e p e o o o o d k e e n a l e r r r r M M M M e e O S pp my t e et e t e t h h h h w w aT s s s s h h h h h h h s s s s k k S b b b b s s s s s s s i i i i c c ) o o o o i i i i i i i r r r r o o * ( a L L L L F F F F F F F I I I I R R
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