ML20150E913
| ML20150E913 | |
| Person / Time | |
|---|---|
| Site: | Pilgrim |
| Issue date: | 06/30/1975 |
| From: | Cehn J, Gina Davis, Larson J BOSTON EDISON CO. |
| To: | Office of Nuclear Reactor Regulation |
| References | |
| NUDOCS 8804040171 | |
| Download: ML20150E913 (50) | |
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PiLoRIM NucLcAR PowcR STATION ! RFD # 1 ROCKY HsLL RO AD I PLvwouTM. Mass ACHusETTs 02360
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September 9, 1975 l l Director, Division of Reactor Licensing Office of Nuclear Reactor Regulation
.: U. S. Nuclear Regulatory Commission '
Washington, D. C. 20555 Docket No. 50-293 License No. DPR-35 Semi-Annual Report No. 6
. Environmental Radiation Monitoring Program Gentlemen:
In accordance with Pilgrim Station, Technical Specification 6.6.D.l.h, we rtre hereby submitting our sixth Semi-Annual Report. A separate report covering Technical Specifications 6.6.D.l.a through 6.6.D.l.g and entitled, "Operating and Maintenance Report" has been sent under separate cover. Very truly yours, 5"
. E. Larson luclear Licensing Administrator -
Operations Courtesy copy to: Director Region I, Inspection and Enforcement U. S. Nuclear Regulatory Commission 631 Park Avenue
. King of Prussia, Pennsylvania 19406 l
l cc: M. J. Feldmann
- J. E. Howard W. F. Roche J. A. Smith i E. F. Kearney l
W. M. Sides D. G. Stoodley j J. E. Larson Boston Edison Company Reading Room 1
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1 DOSTON EDISON COMPANY PILGRIM NUCLEAR GENERATING STATION
.Nnvironmental Radiation Monitoring Program SEMIANNUAL REPOR'," NO. 6 JANUARY 1, 1975 THROUGH JUNE 30, 1975 Prepared By Joel I. Cehn Environmental Sciences Group Nuclear Engineering Department September 1975 1
t l Approved By: .- G. Jar s Davis, Manager Envi nmental Sciences Group l l 1 l J
TABLE OF CONTENTS Section Page I. IFTRODUCTION AND
SUMMARY
. . . . . . . . . . . . 1 II. DESCRIPTION OF MONITORING PROGRAM . . . . . . . 3 A. Atmospheric and Terrestrial Monitoring. . . 3 B. Marine Monitoring . . . . . . . . . . . . . 4 C. Radioactivity Analyses. . . . . . . . . . . 4 III. MONITORING DATA AND RESULTS . . . . . . . . . . 6 A. Air Surveillance. . . . . . . . . . . . . . 6 B. External Gamma Exposure Rates . . . . . . . 6 C. Milk. . . . . . . . . . . . . . . . . . . . 7 D. Crops . . . . . . . . . . . . . . . . . . . 7 E. Domestic and Recreational Water . . . . . . 7 i' . Precipitation . . . . . . . . . . . . . . . 8 G. Seawater. . . . . . . . . . . . . . . . . . 8 H. Marine Life . . . . . . . . . . . . . . . . 8 I. Bottom Sediment . . . . . . . . . . . . . . 10 IV. 1974 SEAFOOD INGESTION DOSES. . . . . . . . . . 11 APPENDIX A
SUMMARY
OF RADIOACTIVE EFFLUENTS. . . . . . . A-1 11
LIST OF ILLUSTRATIONS Figure Page
- 1. Location of Offsite Radiological Monitoring Stations. . . . . . . . . . . . . . . . . . . . . 12
- 2. Location of Onsite Radiological Monitoring Stations. . . . . . . . . . . . . . . . . . . . . 13
- 3. Aquatic and Terrestrial Surveillance Stations . . 14
- 4. Radioactivity in Air Particulates - East Weymouth (EW). . . . . . . . . . . . . . . . . . . . . . . 15
- 5. Radioactivity in Air Particulates - Overlook Area
('OA) . . . . . . . . . . . . . . . . . . . . . . . 16
- 6. Concentrations of Strontium-90 and Cesium-137 in Milk (Plymouth) . . . . . . . . . . . . . . . . 17 iii
LIST OF TABLES Table Page 1 AIR PARTICULATES AND GASEOUS RADIOIODINE SURVEILLANCE STATIONS. . . . . . . . . . . . . . . 18 2 EXTERNAL GAMMA EXPOSURE SURVEILLANCE STATIONS (TLD). . . . . . . . . . . . . . . . . . . . . . . 19 3 TERRESTRIAL AND AQUATIC SURVEILLANCE STATIONS. . . 20 4 TYPES AND FREQUENCIES OF ANALYSES. . . . . . . . . 21 5 ENVIRONMENTAL SAMPLE ANALYSIS PARAMETERS . . . . . 22 5A DETECTION SENSITIVITIES BY HIGH RESOLUTION Ge (Li) GAMMA SPECTROSCOPIC ANALYSIS OF ENVIRONMENTAL SAMPLES. . . . . . . . . . . . . . . . . . . . . . 23 6 AIR PARTICULATES - GROSS BETA CONCENTRATIONS IN WEEKLY SAMPLES (pCi/m3). . . . . . . . . . . . . . 24 7 AIR PARTICULATES - GROSS GAMMA CONCENTRATION IN MONTHLY COMPOSITES (cpm /m3 x lo-3) (a) 25 7A AIRPARTICULATES-GAMMAjSOTOPECONCENTRATIONIN MONTHLY COMPOSITES (pCi/m ). . . . . . . . . . . . 26 8 PARTICULATE IODINE-131 IN AIR SAMPLES (pCi/m ) . . 27 3 28 8A GASEOUS IODINE-131 IN AIR SAMPLES (oCi/m ) 9 EXTERNAL GAMMA EXPOSURE RATES, JANUARY-JUNE 1975 . 29 9A RADIGUARD TLD DATA AND COMPARISONS . . . . . . . . 30 10 RADIONUCLIDE CONCENTRATIONS IN MILK (pCi/1). . . . 31 11 RADIOACTIVITY IN CROPS . . . . . . . . . . . . . . 32 12 RADIOACTIVITY IN DOMESTIC AND RECREATIONI.L WATER . 33 13 RADIOACTIVITY IN PRECIPITATION - PLYMOUTH, MASSACHUSETTS. . . . . . . . . . . . . . . . . . . 34 14 RADIOACTIVITY IN SEAWATER. . . . . . . . . . . . . 35 15 RADIOACTIVITY IN MARINE LIFE . . . . . . . . . . . 36 iv
LIST OF TABLES - Continued Table Page 16 RADIONUCLIDES IN BOTTOM SEDIMENT (pci/g) . . . . . 39 17 1974 SEAFOOD PATHWAY DOSES TO MAN (mrem) . . . . . 40 A-1 SEMI-ANNUAL
SUMMARY
OF RADIOACTIVE LIQUID EFFLUENTS JANUARY - JUNE 1975. . . . . . . . . . . . . . . . A-2 A-2 SEMI-ANNUAL
SUMMARY
OF RADIOACTIVE GASEOUS EFFLUENTS JANUARY - JUNE 1975. . . . . . . . . . . . . . . . A-3 V
t I. INTRODUCTION AND
SUMMARY
Thit report describes the data accumulated in the Environmental Radiation Surveillance Program during the semiannual period January 1 through June 30, 1975. Plant operation during the reporting period is detailed in a separate report entitled "Operating and Maintenance Semiannual Report No. 6". Power levels during this period were limited, administratively, to 80 percent of full power from February through May and 70 percent of full power during June. These limits on power level were set by Boston Edison Company for reasons of operation and maintenance. Plant capacit'J factors (a measure of electrical output) during the reporting period were: January, 36 percent; February, 34 percent; March 76 percent; April, 42 percent; May, 55 percent; and June, 65 percent. The Environmental Radiation Surveillance Program was implemented during the reporting period as required by the Nuclear Regulatory Commission. Plant-related radioactivity levels decreased from 1974 levels in molluscs, algae, and sediment. The current levels of Mn-54, Co-60 and Cs-137 in these media are less than 1 picoeurie per gram. Weapons test fallout was detected in air particulates, specifically Nb-95, Ce-144 and Cs-137. These elements were also detected in variour other media. Gaseous radio-iodine was detected onsite at 1
levels less than 1 picoeurie per cubic meter. This I-131 was attributed to releases from the reactor building vent. Finally, marine media data from 1974 were reviewed and calcula-tions showed that the seafood ingestion dose to an individual was less than 1 millirem per year. 2 s-
i II. DESCRIPTION OF MONITORING PROGRAM The Environmental Radiation and Radioactivity Surveillance Program is being performed in accordance with the requirements cpecified in the Pilgrim Facility Operating License (DPR-35). Summaries of the sampling media, locations, frequencies of collection, analyses and detection sensitivity are given in Tables 1 through
- 5. Sampling locations are shown in Figures 1, 2, and 3. Semi-annual Report No. 2 (August 29, 1973) describes the program in detail; howcVer, the following discussion is provided to update that program description.
A. Atmospheric and Terrestrial Monitoring Beginning this reporting period airborne radiciodine levels are computed for each sample. Previously, samples with activities less than one picocurie per cubic meter were reported as "less than". The gaseous radiciodine sampling filters currently in use are activated charcoal impregnated felt (Barnaby Cheney "VA"). During this reporting period, the environmental dosimeters (TLD's) were replaced with calcium sulphate (dysprosium) TLD's supplied by Teledyne Isotopes. The Teledyne "Radiguard" dosimeters provide four readout areas per location which are averaged after a one month exposure. The dosimeters are initially preselected by discarding those whien .le outside a designated range following controlled irradiation. They are also calibrated by controlled 3
irradiation each month. Typical accuracy is plus or minus three percent (90 percent confidence level) . Sample collection in the atmospheric and terrestrial areas continues to be performed by Boston Edison Company personnel. B. Marine Monitoring Since July of 1973, an additional seawater sample has been taken monthly at a control location in Duxbury (see Figure 3) . This is in addition to sampling of the intake and discharge canals and summer sampling of the area beaches. The sampling of marine life continues to focus on species repre-senting pathways to man. That is, the sampling is focused on edible species (by humans) including soft shelled clams, blue mussels, lobster, Irish moss and finfish. Shellfish, sediment and algaa are sampled at shoreline locations by Battelle-Clapp Laboratories, D1xbury, Mass. Lobsters are collected from commer-cial lobstermen at the time the traps are hauled. The lobsters taken weigh about 450 gms (age about 6 years). Finfish are caught in gill nets and otter traals in the vicinity of the station by the Massachusetts Division of Marine Fisheries. C. Radioactivity Analyses Laboratory analyses continue to be performed by Interex Corpora-tion, Natick, Mass, with analyses of selected media by Teledyne Isotopes, Westwood, N.J. Details of the laboratory procedures 4
.. - ____ -____ - - ____-_ __________________a
can be found in Section 6.1.5.2 of the Pilgrim 2 Environmental Report.( ' The following are modifications of these procedures. The analysis for gamma emitting isotopes (gamma spectrum) is done with a Ge(Li) spectrometer ( } rather than by the radiochemical methods used prior to July 1974. The spectrometer has the advantages of detecting nearly all the gamma emitting isotopes in a single analysis and doing it non-destructively. This analy-sis effectively replaces the gross gamma analysis. The radiochemical procedures used to measure strontium-89 and strontium-90 are those recommended in the NRC Regulatory Guide d 4.6. (1' Originally submitted to the AEC by Boston Edison Company in Juae 1973. (2)The spectrometer at Interex is a Nuclear Data 4420 with a Princeton Gamma-Tech detector. Teledyne utilizes the Princeton F,amma-Tech /Tracor Northern (NS636 and TNll) systems. 5 j
l l 6 l III. MONITORING DATA AND RESULTS A. Air Surveillance Weekly air surveillance samples were analyzed for gross beta activity and radiciodine activity. The results are presented in Tables 6, 8 and 8A. Variations in radiciodine levels correlate to plant releases from the building vent (see Appendix A). These levels have a computed dose equivalent of 0.9 millirem to a con-tinuous occupant at the "warehouse" onsite location. The offsite radiciodine inhalation dose is less than 0.5 millirem. Monthly gross gamma results and quarterly gamma spectra are presented in Tables 7 and 7A respectively. These data show the presence of Nb-95, Cs-137 and Ce-144, typical of weapons test fallout. The April samples from Plymouth Center, Manomet, and pedestrian bridge (onsite) were reanalyzed with greater sensitivity and all showed the presence of Ce-144 and Cs-137. Comparisons of beta radio-activity with preoperational levels are shown in Figures 4 and 5. B. External Gamma Exposure Rates During this reporting period Teledyne Radiguard TLD's were intro-duced into the program. Before phasing out the EGG TL-15 TLD's, overlapping data was obtained. Table 9 presents data taken with the TL-15 TLD's, Table 9A presents data taken with the Radiguard and also presents the ratios of the overlapping results. Ratios were also obtained at nine locations beginning July 1974. These 6
earlier ratios (Radiguard:TL-15) ranged from 0.60 to 0.86 and averaged 0.71. The combined January and February exposure reported in Table 9 was due to inclement weather which persisted for several weeks. C. Milk Milk was sampled from three locations and was analyzed monthly for Cs-137, Sr-90, Ba/La-140 and I-131. The results obtained during the reporting period are presented in Table 10. The levels of strontium and cesium measured in Plymouth milk do not exceed the levels measured prior to station operation, as shown in Figure 6. D. Crops Commercial produce was sampled subsequent to the end of the reporting period and the results will be reported in the next report. E. Domestic and Recreational Water Monthly composites of weekly water samples were analyzed for gross radioactivity and the isotopes H-3, Sr-90 and I-131. Re-sults are shown in Table 12. The May sample from Manomet Well was reanalyzed to check the anomolous tritium result and the result was verified. Although the activity remains unexplained, it is 1/100th of the level permitted by Federal Regulations (10CFR20 App. B). The next sample taken in June contained no detectable tritium. 7
I P. Precipitation A precipitation collection station in Plymouth, five miles from the plant, was sampled during the reporting period. The radio-activity found in the monthly samples is reported in Table 13. G. Seawater Monthly samples were taken from the intake channel, discharge channel, and a control location 7.5 miles NNW of the station. These were analyzed for fractional gross beta (explained in Table 14), gross gamma, tritium and iodine-131. The results of these analyses and of quarterly analyses of intake and discharge sea-water are presented in Table 14. H. Marine Life The results of Ge (Li) and Sr-89, 90 analyses of marine life samples are presented in Table 15. Missing values indicate incomplete analyses and will be reported in a later report. Several samples carried over from the previous reporting period showed plant-related radioactivity. Two Atlantic cod contained low levels of Mn-54, Co-60, Zn-65 and Cs-137. Out of a sampling of ten bluefish, one group of two contained Co-58 and Co-60 activity. This radiocobalt can probably be attributed to one cobalt particle ingested by one of the fish. (Plant discharges are filtered through a 107 filter.) 8 _________j
Finfish (pollock, flounder) from the reporting period showed no plant-produced radioactivity except low levels of Cs-137. This nuclide is present due to weapons test fallout (see Table 7A) and was detected in finfish before the plant began operation. Irish moss (Chondrus crispus) and rockweed (Ascophyllum nodosum) sampled in the vicinity of the station showed plant-related radio-activity (Mn, Co, Zn, Cs). No plant-related nuclides were detected at the control location, Ellisville, except Ce-144, which can be attributed to weapons test fallout (see Table 7A), and Be-7, a cosmic ray produced nuclide.(3) Plant-related activity was not found in clams (Mya arenaria) but was found in mussels (Mytulis edulis) taken from the area of the discharge breakwater only. These mussels contained low levels of Mn-54 and Co-60. Radiation doses to humans resulting from these levels of radio-activity will be discussed in the next report. The results of dose calculations using 1974 marine life data is presented in Section IV. ( }The reaction is C-14 (!!e- 3 , 2a) Be-7. 9
f I. Bottom Sediment Results of analyses of ocean bottom sediments in the vicinity of the plant are presented in Table 16. Sediment is sampled to approximately 1-2 cm depth, and is taken in shellfish bed areas, if possible. Potassium-40 is the predominant isotope and no plant-related isotopes were detected. 10
l IV. 1974 SEAFOOD INGESTION DOSES Estimation of doses to man from marine life ingestion pathways were made in Report No. 5 and presented in Table 18 of that report. These have been modified as follows, and are presented in Table 17. Samples taken in 1974, found to contain plant-related nuclides were grouped by species, and activities were averaged. These mean activities were converted to ingestion doses using Draft Regulatory Guide 1.AA. These doses were then averaged among all species within each of the four groups: fish, crustacea, molluscs and algae. The averaging is done to maintain consumption rates of 18 kg/yr for fish, 9 kg/yr for mollusc and crustacea, and 0.73 kg/yr for algae. Table 17 shows that seafood ingestion doses resulting from 1974 liquid releases totaling 4.2 curies were much less than 1 mrem / year to an average individual. 11
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a TABLE 1 AIR PARTICULATES AND GASEOUS RADIOIODINE SURVEILLANCE STATIONS ( 5 .; Surveillance Stations Station Location ** Req'd by Operating License Not Reg'd by Operating License 3 3 , Onsite Offsite Onsite Offsite Code Fig. No. Direction Distance Rocky Hill Road ER 2 21 SE 0.8 m Overlook Ared OA 2 9 W 0.03 m Rocky Hill Road WR 2 18 W-WNW 0.3 m i Cleft Rock Area CR 1 7 S 0.9 m East Weymouth* EW l 15 NW 23 m Manomet MS 1 10 SE 2.5 m Plymouth Center PC 1 14 W-WNW 4.5 m
+* East Breakwater EB 2 10 ESE 0.35 m 03 Pedestrian Bridge PB 2 8 N 0.14 m Property Line PL 2 24 NW 0.34 m warehouse WS 2 23 SSE 0.03 m Control Station.
** Distances in miles, measured from Unit 1 Reactor Building.
i i 1 l 4 i 1 l 1 l ,__
TABLE 2 EXTERNAL GAMMA EXPOSURE SURVEILLANCE STATIONS (TLD) Surveillance Stations Station Location ** Reg'd by Operating License Not Reg'd by Operating License S o he Wm Onsite Offsite Onsite Offsite Code Pig. No. Direction Distance Microwave Tower MT 2 14 S 0.38 m Overlook Area OA 2 9 W O.03 m Property Line 11 2 6 SSW 0.21 m Property Line 1 2 3 W 0.14 m Public Parting Area PA 2 7 W-NNE 0.07 m l Rocky 11111 Road B 2 13 SSE 0.26 m Rocky 1till Road ER 2 21 SE 0.8 m Rocky 11111 Road WR 2 18 W-WNW 0.3 m Cleft Rock Area CR 1 7 S 0.9 m East Weymouth* EW L 15 NW 23 m Kingston KS 1 2 WNW 10 m Manomet ME 1 9 SE 2.5 m Manomet MP 1 8 ESE-S 2.25 m H Manomet MS 1 10 SSE 2.5 m
- North Plymouth NP 1 3 WNW 5.5 m Plymouth Airport SA 1 14 WSW 8 m Plymouth Center PC 1 4 W-WNW 4.5 m Sagamore CS 1 13 SSE-S 10 m South Plymouth SP 1 5 WSW 3 m East Breakwater EB 2 10 ESE 0.35 m Pedestrian Bridge PB 2 8 N 0.14 m Property Line C 2 11 SE 0.35 m Property Line D 2 1 NNW 0.37 m Property Line E 2 17 S 1.6 m Property Line F 2 2 NW 0.25 m Property Line G 2 4 W 0.4 m Property Line 11B 2 12 SE-SSE 0.35 m Property Line J 2 19 S-SSE 1.6 m Property Line K 2 20 S-SSE 1.7 m Property Line L 2 22 ESE-SE 0.35 m Property Line PL 2 24 NW 0.34 m Warehouse WS 2 23 SSE 0.03 m Bayshore Drive BD 1 6 WNW 0.8 m College Pond CP 1 12 SW 6.5 m Duxbury SS 1 1 NW 5.9 m Emerson Road EM 2 15 SSE 0.96 m Manomet Mn 1 11 SSE 3.5 m
- Control Station.
**Dastance in miles measured from Unit 1 Reactor Building.
i TABLE 3 i TERRESTRIAL AND AQUATIC SURVEILLANCE STATIONS i Refer to I t Distance and Direction Fig. 3, Sarple Location From Station Item No,_ ., Sarple Tyg i Milk Plymouth Count 3.$ miles W 13 , Local store (a)y Farm (CF) ... Bridgewater State Farm (Br) 20 miles W 16 Crenberries Beaver Dam Road Bog 2 miles S 7 Rebbins Bog (RB) 2 miles SSE 8 Bartlett Road Bog (BR) 2.75 miles SSE-S 10 j Crops (potatoes, Plyrouth County Farm (CF) 3.5 miles W 13 cabbage, lettuce Manomet (RT) 2 miles SSE 9 and hay) Bridgewater State Farm (BT) 20 miles W 16 Precipitation South PlymouthI *I 4.75 miles WSW-W 14 Do-estic and Deep Water Purping Station 4.75 miles W 12 i recreational water (Lout Pond Well and Little < i ' South Fond)--Plymouth (LW) Warner's Pond Purping Station 2.75 miles SSE 11 ; Manomet Well (MW) Great Pcnd Pu p4ng Station 24 miles WNW-NW 17 South Weymo (cp) CollegePendjtptb) a (CP) 6.5 miles SW l$ i Seawster Discharge cha5nel (DC) Onsite 1 Cooling water intake (IC) Onsite 2 ' Priscilla Beach (FFB) 0.4 to 1.6 miles ESE-SE $ White Hctse beach (WHE) 1.6 to 2.7 riles ESE-SE 6 flymouth Eeach (TLB) 3. 5 triles WNW 4 f Powder foint - Duxbury (IP) 7.5 miles NNW 3 i-Itartne life Marine waters in staticn Sartling ranges f ree (lctster, fish, vicinity 2.4 miles W WNW to l 2.9 riles ESE-EE collusks) Bottom sediment Area in vicinity of discharge channel octfall (a) Additional stattent ope ratc-d during a cterting Fcried although not required by . cretating license. 1 (b) Contral statten. i l l l 1 1 e i i F 20 i
TABLE 4 TYPES AND FREQUENCIES OF ANALYSES Planned Sample Type Prequency of and Nurber Analysis _ Analysis Collection Type Air Particulates (11) Gross beta Weekly Continuous Gross gamma on filter composites from each s ta tion Monthly Gamma spectrum (a) I-131 Week 1; Gaseous iodine (11) I-131 weekly continuous Carna exposure (39) Dosimeter reading Monthly Continuous Domestic water (5) Gross beta and gross gamma Monthly Grab Gamma spectrum (a) 1-131 Sr-90. H-3 Monthly Precipitation (1) Gross beta and gross gamma Monthly Continuous Ganma spectrum (a) I-131, St-90, H-3 Monthly Seawater (3) Fractional gross beta and gross gamma Monthly Continuous (DC)* Gamma spectrum I-131 Monthly Grab (others) Sr-90, Cs-137, H-3, Mn-54, In 65, co-58, and co-60 Ouarterly Marine life ICI Gross beta and gross gamma tach sample Gamma spectrum (b) I-131, St-90, Cs-137, Mn-54, In-65, co-58, and co-60 Each sample bottom sediment (2) Gross beta, gross gamma, and gamma spectrum Semiannually Grab Milk (3) 1-131, Sr-90, Cs-137 Ba/La-140 Mon thly Crops Gross beta, gross gamma, and gamna spectrum Annually Sr-90 Cs-137 Annually (a) Selective gamma analysis will t.e made based on gross ganna results, with at least one gamma spectrum analysis made each quarter. (b) A gamma spectrum analysis will be made at least enes during each sarpling period. (c) Sarples collected durang their commercial harvesting seascn,
- DC = discharge channel.
21
TABLE 5 ENVIRONMENTAL SAMPLE ANALYSIS PARAMETERS Sample Tyre Analysis Detection Limit Aliquot t Error Air Particulate Cross beta 4 x 10' pC1/m 10,080 ft 3 /
~3 110 Cross ganna 2 x 10 epm /m 3I*I 10,080 ft 3 +10 I" 2 x 10
-2 peij,3 10,080 ft 3 10 /
Nonsaline Water Gross beta 1 pCi/ liter 1,000 ml +10 V
; Cross garra 5 rpm /11ter ICI 4,000 ml 10 Garca spectrum (d) 4,000 ml 90 Sr 0.5 pC1/ liter 1,000 ml 3
+15 /
H- 2.5 pC1/mi 1580f k 4 ml 10 -E Crops and Cross beta Marine Life 0.2 pCi/9 20 g +10 - Cross gamma 0.01 epm /g ICI 1,000 g 10
- Ca.v.a spectrum (d) 1,000 g 90 Sr 0.005 pC1/g 100 g 110 -
Seawater Fractional gross beta 5 pCi/ liter 500 ml +20 - Gross gamma 5 epm / liter ICI 4,000 ml 110 - Camea spectrum (d) 4,000 ml 3 " H 2.5 pCi/ml 4 ml +10- ,Y 90 Sr 0.5 pC1/11ter 15,000 ml 15 / 1 I'Mn Cs 0.05 pC1/11ter 5 pCi/ liter 15,000 ml 1,000 ml [15 e ( 58 -+20-Co 5 pCi/ liter 1,000 ml +20 60 Co 5 pCi/ liter 1,000 ml 20 - In 5 pCi/ liter 1,000 ml 20 131 I $ pCi/ liter 1,000 ml [15 . Milk 90 Sr 2 pCi/ liter 1,000 ml 115 13 Cs 1 pCi/ liter 1,000 ml 140 Ba 115 . 131 I 5 pCi/ liter 1,000 ml 15 1 2 pCi/ liter 2,000 ml +25 Bottom Sediment Cross beta 2 pCi/g 1g +15 Garna Spectrum (d) 1,000 g 90 Sr 0.005 scs/g 100 g 120 Background Cava exposure 1 *R/hr 1-month ~+10 Radiation ra te (s) exposure ; NO*Et Provided by Interex Corp., Natick, Massachusetts , (a) Measured with thermoluminescent dosimeter. (b) In the counter used. 1 epm corresponds to 2.2 pCi of 737 Ca. ; (c) In the counter used, 1 epm corresponds to 9 pCi of 137C s. (d) Ge(Li) detection sensattvattes are given an Table 5A. ; t 22
TABLE SA DETECTION SENSITIVITIES BY HIGH RESOLUTION Ge(Li) GAMMA SPECTROSCOPIC ANALYSIS OF ENVIRONMENTAL SAMPLES Water (1 liter) Soil & Vegetation Filters Nuclide pCi/I _ (400 gm) pCi/gm pCi/ total filter Be-7 8E+01 2E-01 2E+01 K-40 2E+02 SE-01 SE+01 Cr-51 8E+01 2E-01 8E+01 Mn-54 8 2E-02 2 Co-58 8 2E-02 2 Fe-59 lE+01 4E-02 3 Co-60 8 2E-02 2 Zr-95 lE+01 4L-02 3 Ru-103 8 2E-02 2 Ru-106 8E+01 2E-01 8E+01 I-131 lE+01 3E-02 2 Cs-134 9 2E-02 2 Cs-137 9 2E-02 2 Ba-140 3E+01 8E-02 6 La-140 2E+01 4E-02 2E+01 Ce-141 2E+01 4E-02 3 Ce-144 8E+01 2E-01 2E+01 Ra-226 6E+01 lE-01 lE+01 Th-228 lE+01 2E-02 lE+01 Zn-65 2E+01 3E-02 3 23
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LLD a. coa-TABLE 7 AIR PARTICULATES - GROSS GAMMA CONCENTRATION IN MONTIILY COMPOSITES (cpm /m x 10-3)(a) Control Offsite Onsite Collection East Plymouth Cleft Manomet Rocky Hill Property Overlook Pedestrian East Rocky Hill Period (1975) Weymouth Center Rock Area Substation Road (West) Line Area Bridge Breakwater Road (East) Warehouse Jan 5 6 < 3 3 9 3 4 10 6 4 7 Feb 19 19 17 14 23 7 14 8 16 12 32 Mar 21 15 17 14 28 20 25 19 19 8 12 Apr 15 26 15 22 26 22 30 25 28 36 22 g May 12 15 16 14 12 11 11 15 16 9 8 June 20 13 14 15 18 16 6 14 21 9 20 (a) Error is +2 or 104, whichever is larger.
TABLE 7A AIR PARTICULATES - GAMMA ISOTOPE CONCENTRATION IN MONTHLY COMPOSITES (pCi/m3 )("I I Conerol Offeiee oneite 7 Rocky 5111 Collectica East Plymouth Cleft Manomet pocky Mill Property Overlook Pedestrian Emot Period (1975) weyerwt h Center anck Area substation no 4 fuest)
, Line Area priose preakwater mond (East) warehowee January ab-+5 e.e13 +o.co7 e.ote .o.oo7 (b) s.e22 .o.co? o.e2s .o.cor o.o24 1o.007 0.013 +e.007 ',b ) o. ele 10.007 e.els 10.007 c.e15 10.007 ac'11_
ud-s5 e.o11 *e.cos e.o11 +e.coe (b) (b) e.oo, o.cos e.o u go.coe (b) (b) (b) (b) (b) (b) (e) 0.004 +0.002 (b) (b) (b) Co-137 (b) 8.003 +0.002 (b) 0.004 +0.002 (b) C*-144 (b) 0.051 +0.021 (b) 9.044 +0.017 (b) (b) (b) 0.035 10.o12 (b) (b) (b) PO m (a) seesite of Ce(Lil spectrometry. Analysis required quarterly. Nominal MDA*e (siminen detectable activities) y f or t hese tentopes ares I WW 95 - 0.006 pC6/m Co-144- 0.03 Co-137- 8.007 (b) Isom t han MDA. I 1 i a i 1
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28
TABLE 9 EXTERNAL GAMMA EXPOSURE RATES, JANUARY-JUNE 1975 (pR/hr)
- f l Onsite Monitoring
( Locations Jan/Peb March April My June overlook Area (OA) 19.J 19.3 18.9 27.7 32.4 Public Parking Area (PA) 15.1 15.0 14.3 16.9 15.6 Pedestrian Bridge (PB) 17.0 17. 8 (b) 14.9 21.4(b) 17.4 Rocky Hill Road (A) (c) 14.3 (c) 15.1 (c) Rocky Hill Road (B) 16.1 15.2 15.7 16.4 15.9 East Breakwater (ES) 15.5 15.5 14.9 17.6 16.2 Microwave Tower (MT) 15.7 14.6 15.1 16.5 16.5 Property Line (C) (c) (c) (c) (c) (c) Property Line (HB) 15.3 14.4 (c) (c) (c) Property Line (WH) 14.0 13.8 13.3 15.9 14.3 Property Line (EM) 14.4 (c) 14.9 (c) 15.7 Property Line (E) (c) 12.4 (c) 14.5 (c) Property Line (H) 15.5 15.7 15.8 17.2 17.4 Prope-ty Line (G) 12.1 14.5 (d) 14.5 10.8 Property Line (I) 15.8 14.4 15.3 17.0 16.1 Property Line (P) 14.1 14.2 14.7 17.7 15.5 Property Line (D) 13.0 15.0 11.8 16.3 13.3 Property Line (J) (c) 13.6 (c) 17.0 (c) Property Line (K) 14.2 12.7 13.9 15.8 14.8 Property Line (PL) 15.2 13.1(b) 15.2 16. 0 (b) 16.1 Warehouse (WS) 14.3 13. 7 (b) 15.3 19.7(b) 19.3 Average Onsite Dose Rates pe r Month 16.0 14.7 14.9 17.4 16.7 offsite Monitoring Locations East Weymouth (EW) 11.9 14.1 10.4 16.2 10.6 Eingston (KS) (d) 13.3 (c) 15.9 (c) Sagamore (CS) 14.5 15.4 14.3 17.2 14.9 Plymouth Airport (SA) 12.3 13.7 11.5 13.8 12.3 Duxbury (SS) 12.5 14.2 12.7 15.0 13.3 Plymouth (CP) (c) 14.5 (c) 18.2 (c) North Plymouth (NP) 15.9 14.6 14.9 16.5 15.7 Plymouth Center (PC) (c) 13.4 (c) 12.7 (c) South Plymouth (SP) 14.1 14.7 14.1 16.2 15.3 Manomet (MB) 14.2 12.5 14.6 15.2 14.7 Manomet (MS) 14.8 14.8 14.8 17.0 15.3 i Manomet (ME) 16.7 15.2 16.1 18.0 17.0 f Manomet (MP) 12.3 13.1 10.5 16.0 12.8 . Cleft Rock Area (CR) 14.3 (e) 14.8 (e) 15.3 l Rocky Hill Road (ER) 15.8 15.3 15.1 17.7 16.5 Bayshore Drive (BD) 15.7 15.2 15.9 18.3 16.8 Rocky Hill Road (WR) 16.4 15.3 15.9 16.0 17.9 l Average Offsite Dose Rates i per Month 14.4 14.3 14.0 16.2 14.9 l f (a) Gross Exposure Rates which include inherent dosimeter background dose rates. Measured with cap (Mn) dosimeters (EG6G TL-15). (b) New Desimeter n$t normalized. (c) Dosimeter stolen. f (d) Reading lost in readout. ( ( i l \ i l 29 l L
a TABLE 9A RADIGUARD TLD DATA AND COMPARISONS April May June Radiguard/ Radiguard/ Radiguard/ Onsite Locations pR/hr TL-15 pR/hr TL-15 PRfhr TL-15 Overlook Area (OA) 11.2 0.59 26.4 0.95 31.3 0.97 Public Parking Area (PA) 7.2 0.50 5.6 0.33 9.9 0.63 Pedestrian Bridge (PB) 10.3 0.69 10.1 0.47 13.9 0.80 Rocky Hill Road (A) 7.4 - 4.6 0.30 10.2 - Rocky Hill Road (B) 8.6 0.55 6.5 0.40 9.6 0.60 East Breakwater (EB) - - 5.1 0.30 9.6 0.59 Microwave Tower (MT) 7.1 0.47 5.0 0.30 8.4 0.51 roperty Line (C) - - 5.0 - 9.0 - aroperty Line (HB) - - - - 10.2 - Property Line (WH) 6.6 0.50 4.6 0.29 7.5 0.52 Property Line (EM) 6.6 0.44 4.2 - 9.2 0.59 Property Line (E) 6.3 - 4.2 0.29 8.0 - Property Line (H) 9.1 0.58 6.3 0.31 10.6 0.61 Property Line (G) 8.6 - 6.0 0.41 9.7 0.90 Property Line (I) 7.7 0.50 4.8 0.28 8.6 0.53 Property Line (F) 8.4 0.57 6.5 0.37 10.0 0.65 Property Line (D) 7.5 0.64 5.6 0.34 9.7 0.73 Property Line (J) 6.5 - 3.4 0.20 7.2 - Property Line (K) 5.4 0.39 3.6 0.23 7.4 0.50 Property Line (L) 7.7 0.54 6.0 0.37 9.9 0.66 Property Line (PL) 7.7 0.51 5.8 0.36 9.0 0.56 Warehouse (WS) 9.6 0.63 12.3 0.62 16.9 0.88 Average Onsite Dose Rates per Month 7.9 0.54 6.7 0.37 10.7 0.66 Of f site Locations East Weymouth (EW) - - 3.4 0.21 9.0 0.85 Kingston (KS) - - 2.0 0.13 8.0 - Sagamore (CS) - - 5.0 0.29 9.9 0.66 Plymouth Airport (SL) 5.9 0.51 3.8 0.28 7.7 0.63 Duxbury (SS) 5.7 0.45 3.6 0.24 7.7 0.58 Plymouth (CP) - - 3.2 0.18 7.8 - North Plymouth (NP) 8.0 0.50 5.2 0.32 8.0 0.51 Plymouth Center (PC) 5.7 - 3.2 0.25 7.4 - South Plymouth (SP) 7.2 0.51 5.0 0.3? 7.8 0.51 Manome t (MB) - - 2.4 0.16 7.2 0.49 Manome t (MS) 7.5 0.51 5.8 0.34 8.6 0.56 Manomet (ME) - - 5.0 0.28 10.9 0.64 Manomet (MP) 5.7 0.54 3.8 0.24 8.4 0.66 Cleft Rock Area (CR) - - 4.2 - 9.0 0.59 Rocky Hill Road (ER) - - 4.6 0.26 9.9 0.60 Bayshore Drive (BD) - - 7.1 0.39 9.6 0.57 Rocky Hill Read (WR) 7.5 0.47 5.4 0.34 8.9 0.50 Aver:ge Offsite Dose Rates per Month 6,7 0.50 4.3 0.26 8.6 0.60 30
- , .- . . - .. ._ _ - - ~ . _ _ - .
9 5 TABLE'10 RADIONUCLIDE CONCENTRATIONS IN. MILK (pCi/1) Collection Plymouth Analysis Period (County Farm) Bridgewater Local Store Cs-137 Nov (a) 15 + 2 12 + 1 5+1 Dec 1974 (a) 14 T 1 11 T 1 6T1 Jan 1975 14 T 1 13 T 2 16 7 2 Feb 9I1 31 7 3 29 I 3 Mar 11 T 1 13 T 1 9T1 Apr 20 { 2 7+1 9{l 14 7+1 {l May 12 + 1 - June 16 { l 13 + 1 7{l Sr-90 Oct (a) 17 + 3 2' + 1 2+1 Nov (a) 6I1 <2 4I1 ; Dec 1974 (a) 8T1 4+1 3T1 Jan 1975 15 T 2 3I1 26 T 3 - Feb 271 571 7I1 Mar 871 671 6T1 Apr (5) (E) 10 8+1 {l May 8+1 9+1 June 7{1 14 { l 13 { 2 - I-131 Jan lo75 <2 <2 <2 Feb <2 <2 <2 > Mar <2 <2 <2 Apr <2 <2 <2 May <2 <2 <2 June <2 <2 <2 Ba/La-140 Jan <5 <5 <5 Feb <5 <5 <5 ( Mar <5 <5 <5 l Apr <5 <5 <5 May <5 <5 <5 l June <5 <5 <5 i (a) Data reported as incomplete in previous report. (b) Missing data indicates analysis incomplete, results will , appear in a later report. I 31
TABLE 11 RADIOACTIVITY IN CROPS (No data was obtained during this reporting period.) l I l 32
TABLE 12 RADIOACTIVITY IN DOMESTIC AND RECREATIONAL WATER Collection Great Little College Lout Pond Manomet Analysis Date (1975) Pond South Pond Pond Well Well Gross Beta Jan 2.8 +1.0 <l.0 2.6 +1.0 2.3 +1.0 13 +1 (pCi/1) Feb 5.1 71.0 1.8 +1.0 2.2 71.0 1.0 T1.0 4.1 71.0 Mar 6.0 71.0 2.5 71.0 2.2 71.0 <170 5.2 T1.0 Apr 5.5 71.0 1.8 71.0 2.5 71.0 <l.0 1.9 71.0 May 3.6 T1.0 2.2 71.0 4.4 71.0 <l.0 1.0 71.0 June 4.3 [1.0 2.0 [1.0 1.0 [1.0 <l.0 1.1 [1.0 Gross Gamma Jan <5 <5 <5 <5 8+5 (cpm /1) Feb 6+5 <5 <5 8+5 13 75 Mar <5 <5 <5 22 75 10 75 Apr <5 <5 <5 <5- <5 May <5 <5 <5 17 +5 15 +5 June <5 <5 <5 9 [5 <5 Strontium-90 Jan <0.5 <0.7 <0.5 <0.5 <0.5 (pci/1) Feb 0.7 +0.5 <0.5 <0.5 <0.5 <0,5 Mar <075 <0.7 0.5 +0.5 <0.5 <0.5 Apr <0.5 <0.5 <075 <0.5 <0.6 May <0.5 <0.5 <0.5 <0.5 <0.5 June 1.0 10.5 <0.5 <0.5 <0.5 <0.5 Tritium Jan <2.5 <2.5 <2.5 <2.5 <2.5 (pCi/ml) Feb <2.5 <2.5 <2.5 <2.5 <2.5 Mar <2.5 <2.5 <2.5 <2.5 <2.5 Apr <2.5 <2.5 <2.5 <2.5 <2.5 May <2.5 <2.5 <2.5 <2.5 20 12 June <2.5 <2.5 <2.5 <2.5 <2.5 Iodine-131 Jan <5 <5 <S <5 <S (pCi/1) Feb <5 <5 <5 <5 <5 Mar <5 <5 <5 <5 <5 Apr <5 <5 <5 <5 <5 May <5 <5 <5 <5 <5 June <5 <5 <5 <5 <5 33
TABLE 13 RADIOACTIVITY IN PRECIPITATION - PLYMOUTH MASSACHUSETTS ( } Gross Gross Beta Gamma Sr-90 H-3 Collection Period (pCi/m ) -(cpm /m ) (pCi/m ) (pCi/m 2) October 1974 70 150 160 1120 80 120 (b) <l50 November 690 170 <120 <40 (b) <110-December 670 1190 <400 <10 (b) <220 January 1975 910 1110 <190 <120 <440 February 1240 1180 <120 <30 <210 March 1030 1200 <l20 <130 <210 April 440 1130 <120 230 140 <190 (a) Analysis not required by operating license. (b) Results listed as incomplete in previous report. ] l l 34 l
TABLE 14 RADIOACTIVITY IN SEAWATER JANUARY - JUNE 1975 Fractional Gross Beta (pCi/1)
- Concentration Collection Gross Gamma Location Date Frac I Frac II Frac III Frac IV (cpm /1) 11 - 3 (pci/ml) I-131 (pci/1)
Intake Jan <5 <5 <5 <5 <5 <2.5 <5 Channel Feb <5 <5 <5 <5 <5 <2.5 <5 Mar <5 <5 <5 <5 <5 <2.5 <5 Apr <5 <5 <5 <5 <5 <2.5 <S May - - - - 7 +5 <2.5 <5 June - - - - 9 +5_
<2.5 <5 Discharge Jan <5 <5 <5 <5 <5 <2.5 <5 Channel Feb <5 <5 <5 <5 5 +5 <2.5 <5 Mar <S <5 <S <5 5 75 <2.5 <5 Apr <5 <5 <5 <5 6 T5 <2.5 <5 May 14 ~+5 <2.5 <5 l June 9 +5 <2.5 <5 W Powder Jan <5 <5 <5 <5 6 +5 <2.5 <5 '" Point Feb <5 <5 <5 <5 5 75 <2.5 <5 (Control) Mar <5 <5 <5 <S 7 75 <2.5 <5 Apr <5 <5 <5 <5 <5 <2.5 <5 May - - - -
9 +5 <2.5 <5 June - - - - 11 + 5 <2.5 <5 Priscilla Beach June 2 - - - - 7 +5 <2.5 - White !!orse Beach June 2 - - - - 9 15 <2.5 - j QUARTERLY ANALYSIS OF RADIONUCLIDES (pCi/1 ) (b) Location Collection Date Co-58 Co-60 Zn-65 Sr-90 Cs-137 Mn-54 Intake 4th quarter (1974) <14 <16 <30 <.09 (c) <l5
- j. Channel 1st quarter (1975) - -
<22 0.18 +0.11 0.60 +0.07 <11 r 2nd quarter (1975) - - - - - -
Discharge 4th quarter (1974) <14 <16 <30 <.06 0.72 +0.27 (15 Channel 1st quarter (1975) - -
<30 0.47 +0.42 0.25 10.08 <17 2nd quarter (1975) - - - - - -
(a) The four fractions contain essentially:
- 1. Insolubles 2. Ru, Cr, Co. Zn 3. Ra, Sr, Ba 4. Cs (b) Incorporates data listed as incomplete in previous report.
(c) Aliquot lost in analysis.
TABLE 15 . RADIOACTIVITY IN MARINE LIFE JANUARY - JUNE 1975 Date Gross Beta Sr-89 Sr-90 Mn-54 Co-58 Co-60 Zn-65 Cs-137 Sample Type Location (1975) (pci/g) (pCi/g - wet weight) Other 31ue f ish (2) Rocky Point Oct 1 5.2+0.2 (a) <0.007 <0.02 <0.02 <0.02 <0.03 <0.02 (b) Bluefish (2) Rocky Point Oct 1 6.4+0.2 (a) <0.007 <0.02 <0.02 <0.02 <0.03 <0.02 (b) Bluefish (2) Rocky Point Oct 1 1.6+0.1 (a) <0.007 <0.02 13.6+1.4 0.49+0.10 <0.03 <0.02 (b) Bluefish (2) Rocky Point Oct 1 4.5+0.2 (a) <0.007 <0.02 <0.02 <0.02 <0.03 0.09+0.07 (b) Blue f ish (2 ) Rocky Point Oct 1 1.6+0.1 (a) <0.007 <0.02 <0.02 <0.02 <0.03 <0.02
, (b)
Clams (Mya) Plymouth Harbor Apr 8 0.41+0.06 <0.09 <0.007 <0.02 <0.02 <0.02 <0.03 <0.02 Clams Kingston Apr 17 1.0+0.1 <0.06 <0.007 <0.02 <0.02 <0.02 <0.03 <0.02 Clams Warren Cove Apr 21 0.9I+0.08 <0.08 <0.007 <0.02 <0.02 <0.02 <0.03 <0.02 Clams Duxbury Bay Apr 30 0.7370.07 <0.07 <0.007 <0.02 <0.0 2 - <0.02 <0.03 <0.02 Clams Warren Cove June 19 I - -
<0.01 <0.009 <0.01 <0.02 <0.01 Clams Plymouth Harbor June 19 - - -
<0.02 <0.02 <0.02 <0.04 <0.02
[( Clams Clams Kingston Duxbury Bay June June 20 1.1 +0.2 20 1.4 +0.2
<0.01
<0.01
<0.01
<0.01
<0.01
<0.01
<0.03
<0.02
<0.01
<0.01 Clams Warren Cove May 15 1.5 70.2 - -
<0.01 <0.01 <0.01 <0.02 <0.01 Clams Plymouth Harbor May 20 1.0 70.2 - -
<0.01 <0.01 <0.01 <0.02 <0.01 l
Clams Kingston May 28 1.3 70.2 - -
<0.01 <0.01 <0.01 <0.02 <0.01 Clams Duxbury Bay May 28 1.2 [0.2 - -
<0.01 <0.01 <0.01 <0.02 <0.01 (b)
Cod Rocky Point Oct 2 3.9 +0.4 (a) <0.005 0.011+0.004 <0.01 0.024+0.005 0.01+0.01 0.013+0.004 Cod Rocky Point Oct 2 4.3 +0.4 (a) 0.005+0.005 0.011+0.005 <0.01 0.018+0.005 0.02+0.01 <0.01 (b) Flounder Rocky Point Nov 1 3.6 +0.4 ~ (a) <0.005 (0.01 <0.01 <0.01 <0.02 <0.01 (winter) (b) Flounder Rocky Pcint Dec 6 4.8 +0.5 - (a) <0.005 <0.01 <0.01 <0.01 <0.02 <0.01 (winter) (b) Flounder Rocky Point May 8 4.4 +0.4 - -
<0.01 <0.01 <0.02 <0.04 <0.02 (winter)
Flounder Rocky Point May 8 4.6 +0.5 - -
<0.009 <0.01 <0.01 <0.02 <0.01 (winter)
Irish Moss Manomet Point Mar 18 27 +1 <2.0 <0.07 <0.02 <0.02 <0.02 <0.03 <0.02 Irish Moss Manomet Point Mar 29 25 72 <2.0 <0.09 <0.02 <0.02 <0.02 <0.03 <0.02 (c) Irish Moss Manomet Point Apr 16 19 Il <0.7 <0.06 <0.02 <0.02 <0.02 <0.03 0.06+0.04 (d) Irish Moss Manone t Point Apr 29 18 [1 <0.7 <0.06 <0.02 <0.02 <0.02 <0.03 0.09[0.05 (e) Irish Moss Manomet Point Mar 18 33 +2 <2.0 <0.08 <0.02 <0.02 <0.02 <0.03 <0.02 Irish Moss Manomet Point Mar 29 15 71 ~
<2.0 <0.01 <0.02 <0.02 <0. 0. <0.03 0.20+0.12 Irish Moss Manomet Point Apr 16 33 +1 <0.8 <0.06 <0.02 <0.02 <0.02 <0.03 0.15[0.11
TABLE 15 - Continued Date Gross Beta Sr-89 Sr-90 Mn~54 Co-58 Co-60 Zn-65 Cs-137 Sample Type Location (1975) (pCi/q) (pCi/g - wet weight) Other Irish Moss Manomet Point Apr 29 25 +1 <0.6 <0.06 <0.02 <0.02 <0.02 <0.03 <0.02 (f) Irish Moss Rocky Point Mar 21 24 [1 <2.0 <0.07 20.02 <0.02 <0.02 <0.03 <0.02 Irish Moss Rocky Point Mar 31 33 +1 <1.0 <0.06 0.33+0.13 <0.02 0.61+0.15 <0.03 <0.02 Irish Moss Rocky Point Apr 15 29 Il <0.8 <0.06 0.2370.12 <0.02 0.4070.14 <0.03 0.14 +0.09 Irish Moss Rocky Point Apr 23 22 Il <l.0 <0.08 0.13T0.09 <0.02 0.4870.11 <0.03 <0.62 White Horse Beach Mar 21 13 T1 Irish Moss <2.0 <0.07 0.32 +0.13 <0.02 0.47TO.17 <0.03 <0.02 Irish Moss White Horse Beach Mar 29 23 Il <2.0 <0.07 <0.02- <0.02 <6.02 <0.03 <0.02 (g) Irish Moss White Horse Beach Apr 14 21 Il <l.0 <0.08 <0.02 <0.02 <0.C2 <0.03 <0.02 (h) Irish Moss White Horse Beach Apr 24 23 Il <1.0 <0.08 <0.02 <0.02 0.27 +0.10 <0.03 <0.02 Irish Moss Ellisville Mat 19 37 T2 <2.0 <0.08 <0.02 <0.02 <0702 <0.03 <0.02 (i) Irish Moss Ellisville Mar 25 29 T1 <1.0 <0.06 <0.02 <0.02 <0.02 <0.03 <0.02 (j) Irish Moss Ellisville Apr 18 13 Il <2.0 <0.01 <0.02 <0.02 <G.02 <0.03 <0.02 (k) Irish Moss Ellisville Apr 22 31 T2 -
<0.8 <0.08 <0.02 <0.02 <0.02 <0.03 <0.02 Irish Moss Ellisville June 17 - - -
<0.04 <0.05 <0.04 <0.01 <0.04 Irish Moss Manomet Point June 18 - - -
<0.04 <0.04 <0.04 <0.09 <0.03 Irish Moss Manomet Point June 18 - - -
<0.05 <0.05 <0.05 <0.1 0.07 +0.04 Irish Moss White Horse Beach June 18 - - -
<0.03 <0.03 <0.03 <0.07 so.63 Irish Moss Rocky Point June 18 - - -
0.13 10.04 <0.05 0.31 10.06 0.25+0.09 <0.04 W
%J Mussbls Plymouth Harbcr Apr 8 1.0+0.1 <0.05 <0.004 <0.02 <0.02 0.1+0.03 <0.03 <0.02 Mussels Rocky Point Apr 18 0.8 +0.06 <0.05 <0.004 <0.02 <0.02 20.02 <0.03 <0.02 Mussels Discharge June 18 0.3+0.2 - -
<0.2 <0.02 0.0410.01 <0.04 <0.02 Breakwater Mussels Plymouth Harbor June 19 - - -
<0.004 <0.005 <0.005 <0.01 <0.004 Mussels Discharge May 21 0.510.2 - -
0.024+0.009 <0.01 0.04+0.01 <0.02 <0.01 Breakwater Mussels Plymouth Harbor May 21 0.7+0.2 - -
<0.01 <0.02 <0.01 <0.03 <0.01 Pollock Rocky Point Oct 2 4.4+0.4 (a) 0.0110.005 <0.01 <0.01 <0.01 <0.02 <0.01 (b) .
Pollock Rocky Point Dec 12 2.7 +0.3 (a) <0.005 <0.01 <0.01 <0.01 <0.02 <0.01 (b) Pollock Rocky Point May 8 3.2+0.3 - -
<0.01 <0.01 <0.01 <0.03 0.C2+0.01 Pollock Rocky Point May 8 4.310.4 - -
<0.02 <0.02 <0.02 <0.03 0.03+0.01 Pollock Rocky Point May 8 4.7 10.5 - -
<0.02 <0.02 <0.02 <0.04 <0.02 Rockweed Rocky Point June 2 8.6+0.9 - -
0.04+0.01 <0.01 0.62+0.06 0.10+0.03 <0.01 Rockweed Discharge June 2 7.5[0.8 - - 0.05[0.01 <0.01 0.41[0.02 0.05[0.02 <0.01 Breakwater Rockweed East Breakwater June 2 6.7+0.7 - -
<0.01 <0.01 0.32+0.02 <0.04 0.027+0.007 Rockweed Manomet Point June 2 7.5[0.8 - -
<0.01 <0.01 0.02[0.01 <0.02 <0.01
TABLE 15 - Continued Legend: (a) Not analyzed for this isotope. (b) Sample listed as incomplete in previous report (1974). (c) Cc-144 detected at 0.64 +0.43 pCi/g. (d) Ce-144 detected at 1.1 16 6 pCi/g and Ru-106 at 0.57 +0.31 pCi/g. (e) Ce-144 detected at 1.4 +0.5 pCi/g and Ru-106 at 0.68 +0.48 pC1/g. (f) Be-7 detected at 0.56 +6.35 pCi/g, Ru-106 at 0.41 +0.76 pCi/g, and Ce-144 at 0.76 +0.32 pCi/g. (g) Cc-144 detected at 0.62 +0.2* pCi/g. (h) Th-228 detected at 0.22 10.02 pCi/q. (i) Be-7 detected at 2.89 +2.2 pCi/q. (j) Cc-144 detected at 1.23 +0.61 pCi/g. (k) Ce-144 detected at 0.58 +0.35 pCi/g. Notes Missing values indicate incomplete analyses, results will appear in a later report. W CD
TABLE 16 RADIONUCLIDES IN BOTTOM SEDIMENT (pCi/g) " Date Location (1975) K-40 2n-65 Mn-54 Co-58 Co-60 Cs-137 Ra-226 Sr-89 Sr-90 Intake Canal Apr 23 11 +1 <0.2 <0.05 <0.05 4 .06 4 .06 0.2 10.1 <0.04 <0.006 Intake Canal Apr 23 14 + 1 49.1 <
<0.05 <9.05 <0.04 0.3 10.1 <0.01 (0.002 East Breakwater Apr 23 15 11 <0.1 <0.05 <0.06 <0.05 0.3 10.1 <0.08 <0.003 Discharge Breakwater Apr 23 12 11 <0.1 -
<0.05 <0.06 <0.05 0.15 10.06 <0.01 <0.010 Manomet Point Mar 21 12 11 <0.1 <G.05 <0.05 <0.06 <0.05 0.27 +0.07 - -
Warren Cove Mar 21 12 11 <0.1 <0.05 <0.05 <0.06 <0.05 0.25 19.06 -
<0.003 g Discharge Breakwater Mar 21 18 12 <D.1 <0.05 <0.05 <0.06 4.05 0.33 10.05 -
<0.009 Discharge Breakwater Jtme 18 19 +2 <0.2 <0.06 <D.07 <D.07 <D.06 0.4' +0.1 4 .08 0.08 +0.02 Manomet Point June 17 10 +1 <D.1 <D.04 <0.05 <D.04 <D.04 0.18 10.08 <0.01 0.003 10.003 Warren Cove June 17 10 +1 <D.08 <0.03 <0.04 <D.03 <0.03 0.21 +0.07 0.01 +0.01 <0.002 4
I (a) Results of Ge (Li) Opectroscopy. Missing values indicate incort;slete analyses, results will appear in a later report. I i [ l
TABLE 17 1974 SEAFOOD PATHWAY DOSES TO MAN (mrem) Ingestion of("}: Dose to: Fish Crustacea Mollusc Algae (b) Totals Whole Body 0.11 0.002 0.023 0.001 0.14 GI Tract 0.22 0.033 0.17 0.007 0.43 Bone 0.006 - 0.004 0.0003 0.01 (a) Ingestion rates and computacion methods described in text. (b) Includes 1/20 processing dilation. l l 40
7 mm - APPENDIX A
SUMMARY
OF RADIOACTIVE EFFLUENTS JANUARY - JUNE 1975 l A-1
4 P TABLE A-1 SEMI-ANNUAL
SUMMARY
OF RADIOACTIVE LIQUID EFFLUENTS ' JANUARY - JUNE 1975 i Jan Feb Mar Apr Ma{ June Tata'
- 1. Gross Radioactivity (a) Total Released (Cl) 4.89 E-1 4.34 E-2 4.33 E-2 5.32 E-3 3.70 E-2 4.32 E-2 Gd,l F-1 (b) Avg. Conc. Released (uci/ml) 1.78 E-7 5.17 E-8 3.26 E-8 1.41 E-8 2.61 E-8 3 75 E-8 7.41 5-3 6.14 E-8 5.84 E-9 6.70 E-8 8,27 E-8 5.88 E-7 (c) Max. Conc. Released (uCi/ml) 5.88 E-7 9.76 E-8 E
- 2. Tritium (a) Total Released (Ci) 5.29 E-2 1.88 E-4 3.02 E-4 3.76 E-5 1.98 E-2 8.23 E-3 6.10 E-2 (b) Avg. Conc. Released (uci/ml) 1.9 3 E-8 2.24 E-10 2.27 E-10 9.94 E-ll 1.36 E-8 3.77 E-9 S.Cd E-T
- 3. Dissolved Noble Cases '
(a) Total Released (Ci) (a) (a) (a) (a) (a) (a) (b) Avg. Conc. Released (uCi/ml)
- 4. Gross Alpha Radioactivity (a) Total Released (Ci) 1.15 E-7 1.25 E-5 9.25 E-5 <1.09 E-7 <6.96 E-7 <2.18 E-6 <1.08 E-4 Avg. Conc. Released (uCi/ml) 4.18 E-14 1.89 E-ll 6.95 E-Il <2.88 E-13 <4.90 E-13 <9.86 E-13 <1.1; E-li (b)
- 5. Volume of Liquid Waste to Dischar9e Canal (Liters) 1.91 F+4 8.95 E+3 1.36 E+4 5.45 E+3 1.74 E+4 1.09 E+4 7.54 E+4 ,
- 6. Volume of Dilution Water (Liters) 2.74 E+9 8.39 E+8 1.33 E+9 3.78 E+8 1.42 E+9 2.21 E+9 f.9c E+9 f 7. Isotopes Released Chromium-51 (Cl) 6.37 E-3 4.38 E-4 4.72 E-3 1.35 E-4 9.05 E-4 1.26 E-2 '
na 3.73 E-4 9,7d E-3 Manganese-54 5.93 *4-3 1.07 E-3 1.38 E-3 1.54 E-4 1.77 E-3 ' Cobalt-58 1.69 E-3 4.39 E-4 6.39 E-4 5.19 E-5 3.11 E-4 1.38 E-4 3.27 E-! Iron-59 1.39 E-3 3.51 E-4 2.89 E-4 3.97 E-5 3.76 E-4 2.59 E-5 2.47 E-3 Cobalt-60 7.90 E-3 1.81 E-3 2.44 E-3 3.85 E-4 2.54 E-3 1.00 E-3 1.61 E-2 Zine-65 3.63 E-4 1.27 E-4 3.40 E-4 3.48 E-5 2.88 E-4 1.56 E-4 1.31 E-3 , Zirconium-Niobium-95 2.12 E-4 1.31 E-4 1.02 E-4 3.44 E-5 1.12 E-4 1.94 E-5 6.11 E-4 Molybdenum-99/Technecium-99m 1.10 E-3 - 1.25 E-3 3.22 E-5 1.92 E-6 - 2.38 E-3 Silver-llom 1.49 E-5 - - - - - 1.49 E-5 i Iodine-131 1.95 E-1 1.06 E-2 7.62 E-3 8.88 E-4 1.17 E-3 4.49 E-4 2.16 E-1 Iodine-133 3.79 E-4 - 1.14 E-4 6.54 E-6 8.25 E-6 - 5.08 E-4 Cesium-134 6.60 E-2 7.50 E-3 5.92 E-3 8.27 E-4 5.81 E-3 7.16 E-3 9.32 E-2 Cesium-137 1.60 E-1 1.86 E-2 1.45 E-2 2.11 E-3 1.47 E-2 2.84 E-2 2.38 E-1 Ba rium-Lan t hanum-140 2.85 E-3 8.79 E-5 1.45 E-3 5.31 E-5 2.21 E-4 7.26 E-6 4.67 E-3 < Cerium-141 9. 79 E- 5 5.46 E-5 8.02 E-5 3.85 E-5 1.35 E-4 4.39 E-7 4.07 E-4 Cerium-144 - - - - 1.19 E-5 - 1.19 E-5 Neptunium-239 6.05 E-5 - 5.84 E-4 - 2.43 E-5 - 6.69 E-4 Strontium-89 1.60 E-3 1.79 E-4 6.80 E-4 4.85 E-5 8.35 E-4 1.96 E-4 3.54 E-3 Strontium-90 3,25 E-4 4.56 E-5 9.25 E-3 1.04 E-5 2.09 E-4 6.98 E-5 7.52 E-4 Unidentified 3.83 E-2 1.97 E-3 1.10 E-3 4.69 E-4 7.53 E-3 5.10 E-3 5.45 E-2
- 8. Percent cf Tech. Spec. Limit - - 5.76 - . 0.86 3.31 For Total Activity Released (b)
(a) No detectable activity. (b) Based on 10 Ci/ quarter limits. o
TABLE A-2 SEMI-ANNUAL
SUMMARY
OF RADIOACTIVE GASEOUS EFFLUENTS JANUARY - JUNE 1975 Jan Feb Mar Agr Mgr June Total
- 1. Total Noble Cases (C1)
(a) Main Stack 9.87 E+3 5.37 E+3 9.13 E+2 2.30 E+3 (b) Reactor Building Vent 3.38 E+3 4.03 E+3 2.59 E+4 2.06 E+3 1.15 E+3 3.27 E+3 3.97 E+3 4.37 E+3 5.30 E+3
- 2. Total Haloqens (a) 2.01 E+4 (a) Main Stack 3.35 E-1 3.12 E-2 1.88 E-2 7.95 E-2 (b) Reactor Building Vent 4.31 E-2 3.27 E-2 5.40 E-1 1.09 E-1 5.54 E-2 6.62 E-2 1.26 E-1 1.63 1-1 1.13 E-1
- 3. Total Particulates (a) (Ci) 6.33 E-1 (a) Main Stack 4.01 E-4 4.61 E-4 5.94 E-4 1.04 E-3 (b) Reactor Building Vent 1.82 E-3 4.24 E-3 8.56 E-3 1.10 E-3 1.72 E-3 2.62 E-3 3.37 E-3 3.81 E-3 5.21 E-3 4 Total Pirticulate Gross 1.78 E-2 Alpha Radioactivity (Ci)
(a) Main Stack (b) (b) 2.16 E-8 (b) Reactor Building Vent (b) 1.51 E-7 (b) (b) (b) <6.59 E-8 (b) <1.75 E-8 (b)
- 5. Total Tritium (Ci)
(a) Main Stack 5.6C E-1 5.70 E-1 8.30 E-1 5.10 E-1 1.21 E+0 (b) Reactor Building Vent 1.34 E+0 5.02 E+0 3.40 E+0 3.81 E+0 5.91 E+0 5.75 E+0 4.11 E+0 8.53 E+0 3.15 E+1
- 6. Maximum 24-hr Noble Gas (Date) 1-26 2-17 3-26 4-10 5-3 6-30 Release 2.35 E+3 1.15 E+3 5.03 E+2 1.08 E+3
' 4.57 E+2 5.26 E+2
- 7. Percent of Applicable Limit 9, for Noble Cases 2.24 1.37 1.89
- 8. Percent of Applicable Limit 1.23 2.12 2.64 1.95 for Halogens and Particulates 77.46 39.76
- 9. Isotopes Released 42.69 84.23 (c) 12.82 (Ci)
A. Halogens Iodine-131 4.44 E-1 8.66 E-2 8.50 E-2 2.06 E-1 2.06 E-1 1.46 E-1 1.17 E+0 lodine-133 (b) 7.75 E-2 (b) Iodine-135 1.96 E-1 (b) (b) (b) 1.35 E-1 (b) 2.39 E-1 (b) (b) D. Particulates Chromium-51 2.88 E-5 Manganese-54 2.88 E-5 3.66 E-5 2.19 E-5 1.39 E-5 1.40 E-5 7.51 E-6 5.48 E-6 9.93 E-5 Cobalt-58 6.1R E-5 7.56 E-6 5.06 E-7 1.37 E-6 Iron-59 6.15 E-6 7.74 E-5 1.17 E-5 - - - - - 1.17 E-5 Cobalt-60 6.45 E-5 4.80 E-5 2.89 E-5 3.51 E-5 2.95 E-5 8.57 E-6 1.74 E-4 Zirc/Niob-95 2.24 E-6 1.61 E-7 - 5.84 E-7 6.22 E-6 Silver-110m - - 9.21 E-6 Cesium-134 1.13 E-4 1.13 E-4 5.79 E-5 2.96 E-5 5.17 E-6 2.47 E-5 3.59 E-5 2.87 E-5 1.94 E-4 Cesium-136 - 2.63 E-6 Cesium-137 2.63 E-6 1.54 E-4 1.61 E-4 4.71 E-5 8.99 E-5 1.19 E-4 1.03 E-4 6.73 E-4 Barium-Lanth.-140 1.06 E-3 1.87 E-3 2.99 E-3 4.08 E-3 5.23 E-3 8.96 E-3 2.42 E-2 Cerium-141 2.27 E-5 3.59 E-5 1.31 E-4 1.56 E-4 2.09 E-4 2.19 E-4 7.74 E-4 Cerium-144 - - - - 2.40 E-5 - 2.40 E-5 Strontium-89 (b) (b) 1.58 E-3 (b) 2.04 E-3 - - Strontium-90 (b) (b) 7.37 E-6 (b) 1.17 E-5 - - C. Gases (d) (a) with lalf-lives greater than 8 days. (b) Quarterly analysis - Tech. Specs. (c) Tech. Spec. change to quarterl/ limit. (d) Unable to predict due to Augmented Of f-Gas System.}}