ML20151U104
| ML20151U104 | |
| Person / Time | |
|---|---|
| Site: | Brunswick  |
| Issue date: | 12/31/1987 |
| From: | Mays B, Shearin R, Wilkie W CAROLINA POWER & LIGHT CO. |
| To: | |
| Shared Package | |
| ML20151U093 | List: |
| References | |
| NUDOCS 8804290258 | |
| Download: ML20151U104 (58) | |
Text
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Environmenta SurVel anC.
1 Report January 1,1987 - December 31,1987 l
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STEAM ELECTRIC PLANT CAROLINA POWER & LIGHT COMPANY I
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Shearon Harris Energy & Environmental Center Carolina Power & Light Company New Hill, North Carolina ENVIRONMENTAL RADIOLOGICAL MONITORING REPORT FOR BRUNSWICK STEAM ELECTRIC PLANT JANUARY 1 THROUGH DECEMBER 31, 1987 i
Prepared by:
William H. Wilkie Senior Specialist - Environmental i
Reviewed by:
MA Mb$
Rona'd L. Shearin Project Specialist - Envirweental Approved by:
aMnA Ballard S. Mays
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Principal Specialist - Envirbbmental i
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I TABLE OF CONTENTS P_ age 1.0 I NTR00 0 CT I ON.......................................................
1-1 2.0 PROGRAM
SUMMARY
2-1 3.0 INTERPRETATIONS AND CONCLUSIONS....................................
3-1 3.1 Air Samples..................................................
3-1 3.2 Milk Samples.................................................
3-1 3.3 Vegetation--Food Crops.......................................
3-1 3.4 Soil--Shoreline Sediment.....................................
3-2 3.5 Bottom Sediment..............................................
3-2 3.6 Surface Water................................................
3-3 3.7 Fish and Invertebrates.......................................
3-3 3.8 Groundwater..................................................
3-3 3.9 External Radiation Oose (TL0)................................
3-3 3.10 Summary......................................................
3-4 4.0 ANNUAL LAND-USE CENSUS.............................................
4-1 5.0 MISSING SAMPLES AND ANALYSES.......................................
5-1 5.1 Air Cartridge and Air Particulate............................
5-1 5.2 Food Crops...................................................
5-1 5.3 M11k.........................................................
5-1 6.0 ANALYTICAL PROCEDURES..............................................
6-1 6.1 Gross Beta...................................................
6-1 6.2 Tritium......................................................
6-1 6.3 Iodine-131...................................................
6-1 6.4 Gamma Spectrometry Ge(Li)....................................
6-1 6.5 Thermoluminescent 0osimetry..................................
6-2 6.6 EPA Laboratory Intercomparison Program....
1.................
6-3 i
6.7 Lower Limits of Detection (LL0)..............................
6-4 l
7.0 INDEX TO TECHNICAL SPECIFICATION REQUIREMENTS......................
7-1 I
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LIST OF TABLES i
Tab',e Pa9f 2-1 Environmental Radiological Monitoring Program....................
2-3 2-2 Environmental Radiological Monitoring Program--Summary...........
2-11 3-1 Gross Beta Air Particulate Activity Averages Preoperation, 1984, 1985, 1986...................................
3-6 3-2 Historical TLD Results..........<................................
3-7 4-1 Land-Use Census Distances to Locations of Interest...............................
4-2 4-2 Land-Use Census Listings of Gardens Within Three M11es...........................
4-3 6-1 Typical Lower Limits of Detection (LLD) Ge(Li)
Gamma Spectrometry...............................................
6-5 t
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LIST OF FIGURES Figure Pag
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2-1 Locations of Radiological Environmental Direct Radiation Monitors (TL0s).......................................
2-6 2-2 Locations of Radiological Environmental Direct Radiation Monitors (TL0s).......................................
2-7 2-3 Locations of Radiological Environmental Direct Radiation Monitors (TL0s).......................................
2-8 2-4 Locations of Radiological Environmental Waterborne a.id Ingestion Pathway Stations..................................
2-9 2-5 Locations of Radiological Environmental Air Monitoring Stations.............................................
2-10
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3-1 Plot of Air Particulate Gross Beta Activity by Date at Location 200 Versus Control Location Activity................
3-8 3-2 Plot of Air Particulate Gross Beta Activity by Date at Location 201 Versus Control Location Activity................
3-9 3-3 Plot of Air Particulate Gross Beta Activity by Date at Location 202 Versus Control Location Activity................
3-10 34 Plot of Air Particulate Gross Beta Activity by Date dt location 203 Versus Control Location Activity................
3-11 3-5 Ploi of Air Particulate Gross Beta Activity by Date at Location 205 Versus Control Location Activity................
3-12 3-6 Plot of Air Particulate Gross Beta Activity by Date at Location 1200 Versus Control location Activity...............
3-13 3-7 Plot of Air Particulate Gross Beta Activity by Date at Location 1201 Versus Control Location Activity...............
3-14 3-8 Plot of Air Particulate Gross Beta Activity by Date at Location 1202 Versus Control Location Activity...............
3-15 3-9 Bottom Sediment Activity at Stilling Pond......
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1.0 INTRODUCTION
The 1987 Annual Radiological Environmental Operating Report for the Brunswick Steam Electric Plant (BSEP) has beer, prepared in accordance with Technical Specification 6.9.1.7.
This report is being submitted in accordance with Techt.ical Specification 6.9.1.6 and applies to both BSEP Units 1 and 2 (License Hos.
DPR-071 and OPR-062, respectively).
The Brunswick Steam Electric Plant (ESEP) consists of two ooiling water reactors with a design rating of 821 MWe net each.
Corrrorcial production was initiated by Unit 2 on November 3, 1975, and by Unit 1 on March 18, 1977.
The BSEP is located approximately 2.5 miles north of Southport, North Carolina.
This location is near the mouth of the Cape Fear River, j
which is the source of condenser cooling water.
The cooling water is then discharged into the Atlentic Ocean, i
The plant site lies at sea level to 30 feet (MSL) surrounded by ex-tensive swamps and marsher Recreational beaches are located within 20 miles of the plant. Fishing and boating are popular activities in the area.
Within 50 miles of the plant, less than half of the land is used for agriculture.
The agricultural activities include smdll truck farms, cattle, and poultry farms as well as farms producing corn, soybeans, and tobacco.
Most of the industrial activity is in the Wilmington area, approximately 16 miles north of BSEP.
Sunny Point Military Ocean Terminal is located approximately 4.5 miles 4
north of BSEP.
Pfizer Chemical Company, located 1.5 miles southeast of BSEP, manufactures citric acid.
A shipping char.nel in the Cape Fear River intercepts the Atlantic Intracoastal Waterway near Southport.
1-1
j 2.0 PROGRAM SumARY 2.1 The purposes of the Environmental Radiological Monitoring Program are:
L To measure any accumulation of radioactivity in the anvironment and-to assess whether this radioactivity isKthe resul.t of the operation-l of the BSEP.
To provide an evaluation of the environmental' impact:of, operating-releases of radioactive materials from the BSEP.
2.2 Technical Specification Monitoring--The s cpling program developed during preoperational surveillance provided the basis for the environmental monitoring program required b.y the BSEP Technical Specifications.
De-tails of this sampling.progrm -including samoling typo, distance, and direction from the plant tite -are listed in Taole 2-1.
Haps, including the sampling locations with respect to the plant, are shown in Figures 2-1 through 2-5.
Types of samples collected include air car-tridge (iodine), air particulate, fish and' invertebrates, food crops, shoreline sediment, surface water, and direct radiation monitoring.
2.3 Nontechnical Specification Monitoring-io suppluent,.the environmental monitoring program, additional surveillance of air cartridge, air parti-culate, foed crops, bottom sediment, and groundwater' was performed.
Table 2-1 lists these sample locaticr.s with the samp1'e type, distance, and location from the plant site and is denoted by double asterisks (**).
Groundwater samples were collected frcin tha four BSEP landfill monitoring i
wells during each quarter of 1987. A total of 16 groundwater samples was collected for the year.
Bottom sediment samples were collected from the intake and discharge canals and the Cape Fear River in June 1987.
The results are reported in Table 2-2.
2-1
2.4 The following is a tabulation of the specific methods used in monitoring the gaseous effluent and liquid effluent pathways of exposure to man.
s Pathway of Exposure to Man Heata Sampled External Dose TLD Ingestion Pathway Food Crops Fish and Invertebrates Samples Surface Water Inhalation Air Samples Note: Shoreline sediments and bottom sediments are collected as indi-cator samples. There is no established model calculating doses to man from bottom sediment.
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IA8tE 2-1 LDefl5ENSENTAL HADIOLOGICAL 8EmilTGNtIIC PIEIIRAst 15ESIStel(X STEAss ELICIRIC PLA88T Sample Sampling Typical type Sampling Point and Descriptica frequency Sample Slie sample Analysis Air 200--1.0 mile SW Vis.cors Center Weekly 10,000 cu tt lodine Cartridge 201--0.6 mile K PMAC (300 cu m)
(AC) 202-1.0 mile S substatum--construction road 203--2.3 miles SSW Southport substation 204--23 miles NNE Sutton Plant
- 205--0.6 mile SSE Spoil Pond 1200 " - 4.9 miles SSW Caswell Beach at ocean discharge pumps 120t"--0.25 mile WSW discharge weir I202**--0.9 mile NW Bethel Church Cemetery 7
Air 200--1.0 mile SW visitors Center Weekly 10,000 cu tt Cross Beta--Weekly W
Particulate 20f--0.6 mile K PMAC (300 cu m)
Composite Gaimea--
(AP) 202-l.0 mile 5 substation--construction road Quarterly 203--2.3 miles SSW Southport substation 204--23 miles NNE Sutton Planta 205--0.6 mile SSE Spoil Pond 1200**--4.9 miles SSW CasweII Bu.ch at ocean discharge pumps 1201"--0.25 mile WSW discharge weir 1202**-4).9 mile NW Bethel Church Cemetery a
"Control Station.
- Not required by technical specifications.
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TAltli 2-1 (Comt Imuse)
Sample SampiIng Typical Type Sampling Ibint and Description Frequency Sample Slie Sample Amelysis Fish 700--5.5 miles SSW AtientIc Ocean (free swimmers)
SemiannualIy 500 grants Gamma (f I )
701-5.5 miles S$W Atlantic Ocean (bottom f eeders) when in season (met )
702--5.5 miles SSW Atlantic Ocean (invertebrates) 703--Atlantic Ocean; control; location not f
specified*
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l Food Crop 800--O.7 mile K intake canal suonthl y 500 grams 1-131, Gamma j
(F C) 801--0.5 mile SW discharge canal when available (met) 802--10 miles control; location not specified*
803-0.6 mile SSE Spoil Pond 1800**--0.9 mile NW Bethel Church Cemetery II I Ground.ater 1917-1920--O.5 to 0.4 mile NNE BSEP Landf ill Quarterly 4 liters c-a (GW ) *
- Shoreline 500--4.9 miles SSW discharge; beacn Semiannually 500 grams c====
Sediment ISS) to I
Surface 400--0.7 mile NE intak.e canal e Composite 4 Ilters Gamma water 401--4.9 miles S$w discharge Sample Tritium (SW) canal at stiIIing pond
' Control Station
- Not required by technical specifications.
TAIIEE 2-1 (Cont iound)
Semple Sampling Irpleal Type Sampling ibint and Description Frequenry Sampist S t r.s 5 y 3. Analysis-Direct i
1.1 miles E Refer to Figures 1-1 Quarterly loo? Applicadse
.ic Reedout Radiation 2
1.0 mile LSE l-2. 1-3. 1-4. an.i (TL )
3 0.9 mile SE l-5 4
1.1 miles $5E 5
1.1 miles S 6
1.0 mile S 7
1.0 mile SW 8
1.2 mile W 9
1.0 sele WNW 10 0.9 mile NW 11 0.9 mile NNW 12 1.0 mile N 13 1.2 mile NNE E4 0.5 mile NE 15 0.9 mile [NE 16 1.0 mile WSW 17 1.5 miles ESE 18 1.7 miles SE 19 2.0 miles SSE 20 2.1 m!les S 21 2.9 miles SSW 22 5.3 miles SW 23 4.6 miles WSW to 24 3.0 miles W 25 8.7 miles WMr 26 5.9 miles NW 27 5.0 miles NNW 28 2.3 miles N 29 2.0 miles NNE 30 2.0 miles NE 31 2.6 miles ENL 32 5.7 si nos E os F t. F isher AFB 33 4.3 aises C at Ferey Slip N.H. Co.
34 5.5 miles [NE at F t. F isher Museus 35 7.2 miles t hf at Eure Besch 16 9.3 miles NE at Carolina Beech 37 5.5 miles NW at Boiling Spring Lakes 38 11.0 miles W at Sunset Harbor 39 5.3 miles SW at Yaupon Beach 40 6.9 miles WSW at tong Beach 72 8.5 miles WSW at Ocean Crest Pier 73 10.9 miles WSW at long Beech Pier 74 12.0 miles WSW at Blue Water Point 75 4.5 miles 5 at Ft. Cas els Bapt. Assy.
76 4.8 miles S$W at Caswell Beach 77 5.3 miles SSE at Bald Head Island 78 10.0 miles NNE Hwy. 133 at SR 1521 79 9.5 miles N SR 1539 at SR 1521 80 9.5 alles NNW Hwy. 87 at SR 1513 81 10.0 miles WNW Nidway Road at SR 1508 82 11.0 miles W Hwy. 2il at SR lil2 a
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LOCATISNS OF RADIOLOGICAL ENVIRONMENTAL DIRECT RADIATION MONITORS (TLD's)
FIGURE 2-3 WIWINGTON l
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LOCATIONS OF R ADIOLOGICAL ENVIRONMENTAL AIR MONITORING STATIONS (AC, AP)
FIGURE 2-6 87 133 9
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TABLE 3-2 LNVINOBet NTAL RADIOLOGICAL test TORilC PROGRAM SL2004RY Brunswick Steam Electric Plant Docket Numbers 324 and 325 Brunswick County, teorth Carolina Calendar Year 1987 Type and Lower All ladicator Location m/ Highest Annual tesan asedium or Pathway Total No. of Limit of locations (2)
- Name, Control Locations f>ampled or Measured Measurements Detection gesen Distance, and tesen lesen it)ni t of Measurement )
Performed LtD III Range Direction P r (2)
- n. 7 (2)
Cir Cartridge 1-13t I3I 2.500-2 All less than LLD All less than LtD All less than LLD tpCi/m5) 466 cir Particulate Gross Beta 3.80E-3 1.58E-2 (484/415)
Discharge canal at 1.68E-2 (52/52) 1.59E-2 (5t/52) ipC4/m3) 466 5.58E 2.82f-2 mear, 0.25 mi1es Wsw 7.80E 2.79E-2 7.ISE 2.69E-2 III GammaI8I N/A All less than LLD All less than LLD "
All less than LLD L
36 Broadleat Vegetation Gamma (83 1.60E-2 2.37E-2 (t/54)
Spois Pond Garden 2.37E-2 (1/54) 6.75E-2 (3/9)
(pC4/g, met) 63 (Single value) 0.6 mile SSE (Single value)
I.86E 1.12E-l Cs-137 rish and lavertebrates Gamma (8)
N/A All less than LLD All less than LLD All less than LLD ipC4 /g, met )
12 Groundwater Gamma (8)
N/A All less than LLD All less than LLD No control l
Ipci/I) 16(5)
Sediments -
GammaI8I N/A All less than LLD All less than LLD -
No control Shoreline 2
(pC3 /q, dry )
TMSLE 2-2 (contlaved)
ENVIR0884LNTAL RADIOLOGICAL NONITORING PROGlWe SupetARy Bruns =Ick Steam Electric Plant Docket Numbers 324 and 325 Brunswick County, North Carolina Calendar Year 1987 Type and Lower All Indicator Location whilghest Annual Besan seedium or Pathway Total No. of Limit of Locations (2)
- Name, Control Locations Sampled or seessured Measurements Detection stean i)istance, and Mean tesen (Unit of steasurement )
Performed 11D (II Range
. Direction Range Pm I2I I23 Hotton Sediment Gamma (8)(4) 0.201 4.27E-I (1/4)
Discharge casal at 4.2 ?E -1 (1/I)
All less than LLD (pC6 /g, dry )
5 Dutchman Creek Cr-SI Mn-$4 0.033 2.06E -1 (3/41 Discharge canel at 3.16E-1 (1/1)
All less than LLD 5.22E 3.16E-l Sttiling Pond Co-60 0.055 1.19E+0 (3/4)
Discharge canal at 3.64E*O (1/l)
All less than LLD 3.90E - 1.64E +0 Stilling Pond Cs-131 0.031 1.60E-l (4/4)
Discharge canal of 2.55E-l (1/l)
All less than LLD 6.76E 2.35C-t Dutchman Creek Surface Water GammaI0I N/A All less than LLD All less than LLD All less than LLD (pCe/t) 24 Tritium e.ni ~,
<*.! I less than LLD All less than LLD-All less than LLD 24 TLD TLD Roadout (6 )(7 )
9.20E-l Kure Beach 1.tSE+0 (4/4)
No Control (mistirem per eek) 204 7.00E-I - 1.40E+0 7.2 miles ENE 1.00E+0 - 3.40E+0
l FOOTNOTES TO TABLE 2-2 I
1.
Lower limit of detection (LLO) is calculated based on 4.66 standard deviations above background using typical sample size in a given counting time.
Due to counting statistics and varying volumes, occa-3 sionally lower LL0s are achieved.
See Table 6-1.
2.
Mean and range are based on detectable measurements only.
The frac-tions of detectable measurements at specific locations are indicated in parentheses.
~3.
Air particulate and charcoal cartridges were collected weekly. There were 52 weeks in 1987 times 9 air monitor stations for a total of 468 possible samples.
A total of 466 charcoal cartridges and 466 partic-ulate filters was analyzed.
The air samples collected at Location 205 on September 21, 1987, were not analyzed due to a low volume resulting from a damaged power supply.
The air samples col-lected at Location 204 on October 5, 1987, were not analyzed due to a low volume because a pump motor shorted out.
4.
Bottom sediment samples were collected in June 1987 from five loca-tions including the Cape Fear River (1), intake canal (1), and dis-charge canal (3).
5.
Four groundwater locations in the Brunswick Steam Electric Plant landfill were sampled each quarter in 1987.
A total of 16 ground-water samples was collected for the year, j
6.
Dependent on ambient background conditions.
3 7.
Minimum sensitivity is approximately 5 to 10 mR per measurement.
Refer to Section 6.5 for additional information.
8.
Sumary of gamma analysis results in this report does not include the following naturally occurring isotopes since most environmental sam -
ples contained some or all of these:
Be-7, K-40, T1-208. Pb-212 Bi-212,81-214, Pb-214 Ra-226, Ac-228, and Th-234.
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l 3.0 INTERPRETATIONS AND CONCLUSIONS 3.1 Air Samples The average of the gross beta results for air particulate samples collected during 1987 was 1.58E-2 picocuries per cubic meter 3
3 (pCi/m).
The 1986 average was 3.17E-2 pCi/m, and the preopera-3 tional average was 9.83E-02 pC1/m.
Elevated concentrations of radionuclides observed in samples collected during May and June 1986 were attributed to the accident at the Chernobyl Nuclear Power Station.
The average for the 1986 data adjusted for the Chernobyl effects was 1.6E-2, which is comparable to the 1987 average.
Gama scans performed on the particulate filters indicated activi-ties less than LLD.
Table 3-1 provides historical results of gross beta air particulate activity for 1973 and 1974 (preoperational) and for 1985, 1986, and 1987.
Analyses of air cartridges determined that concentrations of I-131 for all indicator and control locations were less than LLD.
3.2 Milk Samples No milk sampling locations are currently identified.
3.3 Vegetation--Food Crops The technical specifications require vegetation sampling from two sectors with historically higher D/Q values and at one location
> 15 km to serve as a control location to estimate a potential milk pathway.
Four gardens are maintained on the site boundary to satisfy the first requirement. One sample of twelve total from the SSE site-boundary garden contained detectable Cs-137 (2.37E-2pCi/g).
Three samples of nine total from the control location contained Cs-137 (mean 6.75E-2; maximum
=
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3-1
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1.12E-1pCi/g).
The source of 'the cesium is probably residual tallout radioactivity from weapons testing rather than from the l
Brunswick Plant effluent.
3.4 Soil--Shoreline Sediment The technical specifications require semiannual samples to be col-
- lected from a downstream location with existing or potential recre-ational value.
The samples for Brunswick are collected from the beach near the ocean discharge location of the Caswell Beach pump-ing station.
All samples revealed concentrations were less than LLD, A control location for shoreline sediment is not required.
3.5 Botton Sediment i
Supplemental sediment sampling was performed on the bottom sedi-ntnts in the Cape Fear River, the intake canal, and the discharge canal.
Similar sampling has been performed in previous years.
Samples were collected in June.
Radioisotopes found in the bottom i
Sediment that may be attributed to plant operations are Cr-51, Co-60 Mn-54, and Cs-137. The Cape Fear River sample served as the
]
control sample.
All radionuclides of potential plant origin were j
in concentrations less than LLD in the control sample.
I In 198/ concentrations of radioactivity in bottom sediments from 4
i the discharge canal were found to be comparable to those measured l
in recent years.
Cr-51 was found in the discharge canal at Dutch-man Creek but had not been observed previously.
The highest con-I centration of detectable radioactivity of possible Brunswick Plant l-origin was 1.64 pC1/g of Co-60 found in the discharge canal at the Caswell Beach pumping station stilling pond.
No Cs-137 was detected in sediment from the intake canal as it had been in pre-vious years, l
i Deposition / retention of radioactivity from plant effluent on bottom j
)
sediment in the discharge canal appears to be in equilibrium.
l Continued sampling will be performed in the future.
5 3-2
3.6 Surface Water Serface water is sampled monthly from the intake canal and at the Caswell Beach pumping station stilling pond.
The samples are ana-lyzed for tritium and gamma-emitting radionuclides.
In all sam-ples, the activities were less than LLO.
i 3.7 Fish and Invertebrates Fish and invertebrate samples are collected semiannually when in season from two locations:
(1) near the ocean discharge pipe at i
Caswell Beach and (2) as a control location in an area not in-fluenced by plant operations in the Atlantic Ocean.
In all sam-ples, activities were less than LLD.
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3.8 Groundwater Groundwater samples are collected and analyzed quarterly for gamma-emitting radionuclides from four wells in the BSEP landfill.
All samples revealed activities less than LLD.
3.9 External Radiation Dose (TLD)
Environmental dosimetry data did not show any significant changes from measurements in previous years.
The average dose rate for 1987 was 0.92 mrem / week compared to the 1986 average of 0.89 mrem /
week and 1.02 mrem / week during the preoperational period (fourth quarter 1972--second quarter 1975).
The location with the highest average was at Kure Beach with an average of 1.2 mrem / week.
All values ><ere within an expected deviation range.
Table 3-2 provides historical average TLD results from 1972 (fourth quarter) through 1987.
3-3
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3.10 Summary l
All samples analyzed met the LLO requirements as estabitshed by Technical Specification 6.9.1.7.h and Table 4.12.1-1.
In sumary.
the analyses from the environmental media surrounding the Brunswick Plant confirm that the environmental impact of the plant during 1987 was minimal.
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INDEX FOR PLOTS GROSS BETA ACTIVITIES AIR PARTICULATE SAMPLES Figure 3-1 Location 200 Figure 3-2 Location 201 Figure 3-3 Location 202 Figure 3-4 Location 203 Figure 3-5 Location 205 Figure 3-6 Location 1200 Figure 3-7 Location 1201 Figure 3-8 Location 1202 BOTTON SEDIMENT ACTIVITY Figure 3-9 Discharge Canal at Stilling Pond 3-5
TABLE 3-1 GROSS BETA AIR PARTICULATE ACTIVITY AVERAGES FOR SIX-8eNTH PERI (BS 3
C(MPARISON OF DATA 1973, 1974 (PREOPERATIONAL), 1985,1986. Als 1987 (pC1/im }
Location 1st/73 2M/73 1st/74 2M/74 1st/85 2M/85 1st/86 2M/86 1st/87 2M/87 AP-200 1.5E-2 2.9E-2 1.7E-1 1.1E-1 1.6E-2 1.7E-2 4.5E-2 1.7E-2 1.3E-2 1.7E-2 AP-201 3.1E-2 1.6E-1 1.2E-1 1.9E-2 1.6E-2 4.5E-2 1.8E-2 1.5E-2 1.8E-2 AP-202 3.4E-2 1.7E-1 1.1E-1 1.7E-2 1.6E-2 4.8E-2 1.7E-2 1.3E-2 1.6E-2 a
AP-203 1.6E-2 3.2E-2 1.5E-1 1.1E-1 1.8E-2 1.9E-2 4.4E-2 1.8E-2 1.5E-2 1.8E-2 AP-204 1.7E-2 3.2E-2 1.6E-1 1.0E-1 1.7E-2 1.7E-2 4.6E-2 1.8E-2 1.4E-2 1.7E-2 AP-1200 1.5E-2 2.8E-2 1.6E-1 1.1E-1 1.5E-2 1.4E-2 4.4E-2 1.6E-2 1.3E-2 1.7E-2 AP-1201 1.6E-2 3.1E-2 1.8E-1 1.1E-1 1.8E-2 1.6E-2 4.8E-2 1.7E-2 1.5E-2 1.9E-2 AP-1202 1.6E-2 1.5E-2 4.6E-2 1.7E-2 1.5E-2 1.8E-2 AP-205 1.7E-2 1.6E-2 4.6E-2 1.6E-2 1.4E-2 1.7E-2
TABLE 3-2 HISTORICALTLDRESULTS(1972-1987)
Average Dose of All TLD Year Monitoring Locations (mrem / week) 1972(FourthQuarter) 0.8 1973 1.25 1974 0.97 1975 (First and Second Quarters) 0.8 1976 0.98 1977 1.32 1978 1.24 1979 0.93 1980 O.90 1981 0.96 1982 1.18 1983 1.21 1984 0.98 1985 1.03 1986 0.89 1987 0.92 3-7
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4.0 ANNUAL LAND-USE CENSUS i
Technical specifications require that a land-use census sh611 De con-ducted and shall identify within a distance of 8 km (5 miles) the loca-tion in each of the 16 meteorological sectors of the nearest milk animal, Z
the nearest resident, and the nearest garden of greater than 50 square i
meters (500 square feet) producing broadleaf vegetation.
The land-use census shall also identify within a distance of 5 km (3 miles) the loca-tion in each of the 16 meteorological sectors of all milk animals and all gardens of greater than 50 square meters producing broadleaf vegetation.
l Sampling of at least three different kinds of broadleaf vegetation may be performed at the site boundary in each of two different direction sectors with the highest 0/Qs in lieu of the garden census.
The land-use census shall be conducted during the growing season at least once per 12 months using information that will provide the best results such as by door-to-door survey, aerial survey, or by consulting local i
agricultural authorities.
The 1987 BSEP land-use census was performed using aerial photographs of the area and by performing a visual inspection from all roads within the five-mile area excluding those within the Sunny Point Military Ocean Terminal. Additional informaticn was obtained from residents, the county extension agents, and farm supply businesses.
The census was performed by the BSEP environmental staff during May 1-June 1, 1987.
Forty-two gardens of greater than fif ty square meters were found to be
'ocated within three miles.
No milk animals were found.
(Six beef cattle and thirteen goats not kept for milk production were identi-fied.)
Table 4-1 summarizes the locations of the nearest meat animal, residence, and garden in each of the 16 compass sectors.
Table 4-2 summarizes the locations of gardens greater than 50 square meters in size which are located within a three-mile radius of the plant.
4-1 D
l e
TABLE 4-1 DISTANCE TO THE NEAREST SPECIAL LOCATIONS FOR THE BRUNSWICK STEAM ELECTRIC PLANT (MILES) l Milk Milk Meat Sector Residence (Miles)
Cow Goat Animal Garden N
NNE 1.2 1.3 1.2 NE ENE E
l ESE 1.6 1.6 i
1.5 1.7 SSW 1.4 1.4 SW 1.0 1.0 WSW 1.1 2.0 1.0 W
0.8 0.9 WNW 0.9 0.9 NW 0.9 NNW 0.9 1.0 Distances are estimates from composite map--approximate error 0.1 mile.
4-2
l l
TABLE 4-2 i
LISTING OF GARDENS WITHIN THREE MILES Sector Distance i
N NME 1.2 NE ENE E
1.7 1.7 1.8 1.9 1.9 1.9 2.0 2.3 2.4 SSW 1.5 1.5 1.7 1.8 1.8 1.9 1.9 2.0 2.1 2.2 2.4 2.7 2.8 SW 1.0 1.0 1.0 WSW 1.1 1.5 1.9 2.7 2.7 4
W 0.8 1.1 1.2 2.4 2.6 2.7 WNW 0.9 1.0 1.1 NW NNW 0.9 Distances are estimates from composite map--approximate error 1 0.1 mile.
+
4-3
5.0 MISSED SAMPLES AND ANALYSES 5.1 Air Cartridge and Air Particulate Air particulate and charcoal cartridges are collected weekly.
There were 52 weeks in 1987 times 9 air monitor stations for a possible total of 468 samples.
Listed below are the samples that were not available for analysis:
Location 205--September 21, 1987--power supply was cut.
Location 204 Control--October 5,
1987--low volume; pump motor shorted out.
5.2 Food Crops Samples were not available from Location 802, Control, in February, July, August, September, October, November, and December.
Samples were not available from any of the sample gardens (Locations 800, 801, 803, and 1800) durirg September, October, November, and December.
Drought conditions existed in North Carolina during 1987 resulting in limited availability.
S.3 Milk No sampling locations are currently identified.
5-1
6.0 ANALYTICAL PROCEDURES 6.1 Gross Beta Gross beta radioactivity measurements are made utilizing a Tennelec Low-Background Alpha / Beta Counting System.
The LLD for air par-3 ticulates is approximately 0.004 pCi/m,
Air particulate samples are mounted in 2-inch stainless steel plan-chets and counted directly.
6.2 Tritius Liquid samples requiring tritium analysis are first distilled.
Five milliliters of the distillate are mixed with ten milliliters of liquid scintillation cocktail and counted on a liquid scintillation counter for 50 minutes. The LLD is approximately 1200 pCi/1.
6.3 Iodine-131 Iodine-131 airborne concentrations are quantified by the Ge(L1) gamma spectrometry systems. The cartridges are placed on the detec-tor and each charcoal cartridge is counted individually with an 3
approximate LLD of IE-2 pC1/m,
Iodine-131 in milk is analyzed by use of anion-exchange resin, sodium hypochlorite leach, and organic extraction.
Iodine is pre-cipitated as silver iodide, collected on a tared filter, dried, and counted on a beta-gamma coincidence system or by low-background beta counter.
The LLO is approximately 0.3 pCi/ liter.
6.4 Gamma Spectrometry Ge(Li)
Gama spectrum analysis utilizes germanium or Ge(Li) detectors with thin aluminum windows housed in steel and lead shields.
The 6-1
j c
analyzer systems are Nuclear Data 4420 and 6685.
Table 6-1 summa-rizes LLO values derived from instrument sensitivity based upon a blank sample background.
Air particulate composites are placed in a Petri dish and analyzed directly.
Liquid samples, except milk, are boiled down to a small volume, transferred to a 250-m1 polypropylene beaker with lid, and analyzed directly.
Shoreline sediments are dried, weighed, and then analyzed in a Marinelli beaker.
Food products and broadleaf vegetation samples are weighed wet and analyzed in a Marinelli beaker.
Fish samples are cleaned, dressed, and placed in a Marinelli beaker for analysis.
6.5 Thermoluminescent Dosimetry Each area monitoring station includes a TLD packet, which is a polyethylene bag containing three calcium sulf ate phosphors con-tained in a Panasonic U0-814 badge.
The TLD is lighttight, and the bag is weather-resistant.
Dosimeters are machine annealed before field placernent.
Following exposure in the field, each dosimeter is read utilizing a Panasonic TLD reader.
This instrument integrates the light photons emitted from traps deexcited above 150'C.
The lower-energy traps are auto-matically eliminated through a preheat cycle.
Calibration is checked regularly using dosimeters irradiated to known doses.
Prior to the measurement of each dosimeter, the instrument is checked through use of an internal constant light source as a secondary standard. The minimum sensitivity of the dosimeters used is approx-imately 1 mR.
6-2
The exposure reported is corrected for exposure received in transit and during storage through the use of control dosimeters.
6.6 EPA Laboratory Intercomparison Program The Radiological Envirorraental Laboratory at the Harris Energy &
Environmental Center in New Hill, North Carolina, provides radio-analytical services for CP&L's nuclear plant environmental surveil-lance programs.
The laboratory is a participant in the EPA cross-check program and uses its performance in this program as a major determinant of the accuracy and precision of its analytical results.
During 1987, 21 samples representing 3 major environmental media (water, milk, and air filters) were analyzed.
Data on the known activities and the normalized standard deviations, using the known value, for these 50 analyses have been received from the EPA.
A comparison of the average of our reported values with the EPA known activity and its standard deviation can be summarized as follows:
Standard Deviation (sigma) c.
From Known Activity Percent of Analyses 5 I standard deviation 58
$ 2 standard deviation 86 1
5 3 standard deviation 94 Of the 50 determinations, 3 (6 percent) fell outside the 3 sigma control limit.
In June 1987, analyses for gross alpha in water was 3.10 standard deviations above the known value.
The self-absorption curve was redone, and the analysis then yielded a value of 34 pCi/1 as com-pared with the known value of 30 pCi/1.
This is equivalent to a value of 0.79 standard deviation above the known value.
There appeared to have been a
shift in the curve developed in January 1987.
6-3
In July 1987, Cr-51 in a gamma analysis of water was 4.15 standard deviations above the known value.
The value for the other 5 nuclides were all equal to or less than 1.5 standard deviations from the known values.
Cr-51 is determined using the 9.83 percent abundance peak at 320.08 kev.
Subsequent analyses for Cr-51 were within limits.
l 1
In October 1987, a gross beta in water was 5.54 standard deviations above the known value. An EPA sample run after this sample with the same parameters was 0.38 standard deviations below the known value. Sr-89 and Cs-137 were among the beta emitters in the sample.
6.7 Lower Limits of Detection All samples analyzed met the LLD required by Technical Specification 6.9.1.7 and Table 4.12.1-1.
Typical "a priori" LLO values for the samples analyzed are listed in Table 6-1.
6-4
Table 6-1 Typical Lower Limits of Detection (a priori LLD)
Ge(Li)GannaSpectrometry Surface Water Samples
- presnwater)
Isotope (LLD)
Cr-51 18 pC1/1 Mn-54 3
Co-SP 3
Co-60 4
Zn-65 9
Hb-95 4
Zr-95 8
I-131 3
Cs-134 4
Cs-137 4
Ba-140 12 La-140 5
Other Expected Gama Emitters 2 to 60 Surface Water Samples *
(Saline Water)
Isotope (LLD)
Cr-51 25 pC1/1 l
Mn-54 4
Co-58 4
Co-60 7
I-131 4
Cs-134 5
Ct 137 5
Ba-140 17 La-140 6
Other expected Gama Emitters 2 to 90
- The sample activities were decayed from the middle of the sampling period rather than from the end of the sampling period.
This resulted in LLO values that appear higher than values calculated from the end of the period.
6-5
Table 6-1(continued)
Air Particulates*
(Quarterly Composite)
Isotope (LLD)
Cs-134 0.002 pCi/cubicmeter Cs-137 0.001 Ba-140 0.004<
La-140 0.002 Other Expected Gama Emitters 0.001 to 0.042 Groundwater Samples (ShorelineorBottom)
Isotope (LLD)
Cr-51 18 pCi/l Mn-54 3
Co-58 3
Co-60 4
Cs-134 4
Cs-137 4
Ba-140 12 La-140 5
Other Expected Gama Emitters 2 to 56
)
)
- The sample activities were decayed from the middle of the sampling period rather than from the end of the sampling period.
This resulted in LLD values that appear higher than values calculated from the end of the period.
6-6
Table 6-1(continued)
Milk (gama scan)
Isotope (LLO)
Cr-51 33 pCi/1 Mn-54 5
Co-58 6
Co-60 7
I-131 4
Cs-134 6
Cs-137 5
Ba-140 21 La-140 7
Other Expected Gama Emitters 2 to 43 Sediments Isotope (LLD)
Cr-51 200 pCi/kg Mn-54 33 Co-58 33 Co-60 55 Cs-134 50 Cs-137 31 Other Expected Gama Emitters 18 to 590 e
6-7
iTable 6-1 (continued)
Fish Isotope (LLD)
Cr-51 250 pCi/kg Mn-54 46 Co-58 36 Co-60 20 Zn-65 83 I-131 24 Cs-134 54 Cs-137 41 Other Expected Gamma Emitters 4 to 690 Food Products and Vegetation Isotope (LLD)
Cr-51 110 pCi/kg Mn-54 18 Co-58 19 Co-60 19 I-131 14 Cs-134 19 Cs-137 16 Other Expected Gamma' Emitters 10 to 300 0
6-8
i 7.0 INDEX TO TECHNICAL SPECIFICATION REQUIREMENTS This page provides correlation between this report and the Brunswick Technical Specifications.
SPECIFICATION REPORT SECTION 6.9.1.7 a 3.0 INTERPRETATIONS AND CONCLUSIONS 6.9.1.7 b 4.0 ANNUAL LAND-USE CENSUS 6.9.1.7 c Table 2-2(ResultsofAnalysisofEnv. Samples) 6.9.1.7 d 2.0 PROGRAM
SUMMARY
6.9.1.7 e Figures 2-1, 2-2, 2-3, 2-4, and 2-5 6.9.1.7 f 6.6 EPA Laboratory Intercomparison Program 6.9.1.7 g 5.0 MISSING SAMPLES AND ANALYSES 6.9.1.7 h 6.1 Gross Beta 6.2 Tritium 6.3 Iodine-131 6.7 Lower Limits of Detection Table 6-1 Typical Lower Licits of Detection Ge(Li) Gamma Spectrometry f
7-1
_ _ _ _ _