BSEP-85-0804, Environ Surveillance Rept,1984
| ML20127J827 | |
| Person / Time | |
|---|---|
| Site: | Brunswick  |
| Issue date: | 12/31/1984 |
| From: | Dietz C, Pasteur R CAROLINA POWER & LIGHT CO. |
| To: | Grace J NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| References | |
| BSEP-85-0804, BSEP-85-804, NUDOCS 8505210593 | |
| Download: ML20127J827 (45) | |
Text
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Surveillance Report January 1,1984 - December 31,1984 BRUNSWICK STEAM ELECTRIC PLANT CAROUNA POWER & UGHT COMPANY R
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. e Shearon Harris Energy & Environmental Center
. Carolina Power & Light Company
& L New Hill, North Carolina ENVIRONMENTAL RADIOLOGICAL MONITORING REPORT FOR BRUNSWICK STEAM ELECTRIC PLANT JANUARY 1,.1984, THROUGH DECEMBER 31, 1984 Prepared By:
DSm '
l ' R5gsr D. Pasteur j Senior Specialist - Environmental Reviewed By:
77L ~ -2d%MJ Rtfnald L. Shearin ~
Project Specialist - Environmental l
Approved By:
p .DrigIaal Signed By
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S CV[A.LkA H. WARRINER s
George H. Warriner Principal Specialist - Environmental
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TABLE OF CONTENTS
1.0 INTRODUCTION
................................................ 1-1 2.0 PROGRAM
SUMMARY
............................................. 2-1 3.0 INTEPRETATIONS AND CONCLUSIONS.............................. 3-1
- 3.1 Air Samples............................................ 3-1 3.2 Milk Samples........................................... 3-2 3.3 Vegetation............................................. 3-2 3.4 So11...................................................
3.5 Surface Water..........................................
3-3 3-3 $1 3.6 Fish and Invertebrates................................. 3-3 3.7 Groundwater............................................ 3-4 3.8 External Radiation Dose........................... .... 3-4 3.9 Summary........................................... .... 3-4 4.0 ANNUAL LAND-US E CENSUS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1 5.0 MISSED 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 5.4 External Radiation (TL0)............................... 5-1 6.0 AN A LYTICA L PROC E DU RES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 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 Dosimetry............................ 6-2 6.6 EPA Laboratory Intercomparison Program................. 6-3 6.7 Lower Limits of Detection.............................. 6-4 h
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1.0 INTRODUCTION
i The 1984 Annual Radiological Environmental Operating Report for the =,
Brunswick Steam Electric Plant (BSEP) has been prepared in accordance with Technical Specification 6.9.1.7. This report is being submitted 7
}
in accordance with Technical Specification 6.9.1.6 and applies to "
both BSEP Units 1 and 2 (Licenses DPR-071 and DPR-062, respectively).
-a .
The Brunswick Steam Electric Plant (BSEP) consists of two boiling ;
water reactors with a design rating of 1642 MWe net. Commercial production was initiated by Unit 2 on November 3, 1975, and by Unit 1 !
[
on March 18, 1977. i The BSEP is locited approximately 2.5 miles north of Southport, North Carolina. This location is near the mouth of the Cape Fear River, f
5 which is the source of condenser cooling water. The cooling water is Q then discharged into the Atlantic Ocean. y The plant site lies at sea level to 30 feet (MSL) surrounded by y
- extensive swamps and marshes. 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 I-of the land is used for agriculture. The agricultural activities include small 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, apprc::imately 16 miles north of .
BSEP. Sunny Point Military Ocean Terminal is located approximately 7 4.5 miles north of BSEP. Pfizer. Chemical Company, located 1.5 miles 2 southeast of BSEP, manufactures citric acid. A shipping channel in the Cape Fear River intercepts the Atlantic Intracoastal Waterway near Southport. ;
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h 2.0 PROGRAM SUMERY 2.1 The purposes of the Environmental Radiological Monitoring Program are:
e - To measure any accumulation of radioactivity in the environment and to assess whether this radioactivity is the result of the operation of the BSEP.
- To provide an evaluation of the environmental impact of operating-releases of. radioactive materials from the BSEP.
1 To compare population doses from environmental sample data with corresponding doses predicted in the Final Environmental Statement.
2.2 Technical Specification Monitoring--The sampling program developed during
- preoperational surveillance provided the basis for the environmental monitoring program. required by the BSEP Technical Specifications.
Details of this sampling program, including-sampling type, distance, and direction from the plant site, are listed in Table 2-1. Maps, including the sampling locations with respect to the plant, are shown in Figures 2- >
1 through 2-5. Types of samples collected include air cartridge
. (iodine), air particulate, fish and invertebrates, food crops, milk, shoreline sediment, surface water, and direct radiation monitoring..
' 2.3- Non-Technical Specification Monitoring--To supplement the environmental monitoring program, additional surveillance of bottom ' sediments .and
- groundwater was performed. Table 2-1 lists these sample locations with the . sample type, distance,-and location from the plant site and is denoted by double asterisks (**).
Beginning in the third quarter of 1980, groundwater samp1es have been taken from 17 wells at the Southport-Brunswick County Landfill to monitor for transport of radioactive material into the groundwater system.
Following the discovery of elevated activity levels in the discharge canal = sediments in September 1982, a monthly bottom sediment sampling 2-1
program was instituted. Bottom sediment samples were collected from the intake and discharge canals and the Atlantic Ocean. The - Technical Specifications requirements for discharge canal sediments sampling were deleted by a January 1984 amendment to BSEP Technical Specifications.
The expanded bottom sediment sampling program was discontinued at the end ~l l of January 1984. However, spot sampling was co~nducted in 1984 to ensure that conditions have not changed. The results are reported in Table 2-2. The results of future samplings will be reported if i significant increases in the discharge canal sediment activity are j observed.
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TABLE 2 ENVIR000 ENTAL RADIOLOGICAL NOMITORING PROGWI BitBI5WI(X STEAtt ELECTRIC PUWiT Sample SampiIng Type Sampling Point and Description Frequency Sample Sire Sample Analysis Air 64-1.0 mile SW Visitors Center Weekly 10,000 cu ft lodine
! Cartridge 65--0.6 mile NE PMAC (300 cu m)
(AC) 66--1.0 mile S substation--construction road i 67--2.3 miles SSW Southport substation l 68-23 miles NNE Sutton Plant *
- 69-4.9 miles SSW Caswell Beach at ocean
! discharge pumps 70--0.1 mile SW discharge weir 71--0.9 mile NW Bethel Church Cemetery 72--0.6 mile SE Spoll Pond Air 64-1.0 mile SW Visitors Center Weekly '10,000 cu ft Gross Beta--Weekly Particulate 65--0.6 mile NE PMAC (300 cu m) Composite Gamma--
y e (AP) 66--l.0 mile S substation--construction road Quarterly W 67-2.3 miles SSW Southport substation 68-23 miles NNE Sutton Plante i 69--4.9 railes SSW Caswell Beach at ocean -!
discharge pumps 70--0.1 mile SW discharge weir
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71--0.9 mile NW Bethel Church Cemetery 72--0.6 mile SE Spoli Pond
' Control Station
TABLE 2-1 (Continued)
Sample SampiIng Type Sampling Pbint and Description Freguoncy Sample Size Sample Analysis Botton 108-1.5 miles SE Intake canal control Sealannual 500 grams Gamma Sediment 109--0.1 mile SW discharge canal near plant (SD)** 110-5.0 miles S$w discharge canal at Caswell Beach pumping station 111-5.5 miles SSW Atlantic Ocean 0.5 mile E of plant discharge 112-5.5 miles SSW Atlantic Ocean near plant discharge 113-5.5 miles SW Atlantic Ocean 0.5 mile W of plant discharge Fish 78-5.5 miles SSW Atlantic Ocean Sealannually 500 grams Gamma (FI ) 79-5.5 miles SSW Atlantic Ocean when in season (wet) 80-5.5 miles $$W Atlantic Ocean 8I-Atlantic Ocean; control; location not specifled*
Food Crop 82--0.7 mile E Intake canal Monthly 500 grams 1-131, Gamma (FC) 83--0.6 mile SW discharge canal when available (wet) 84-10 miles control; location not specified*
85--0.9 mile NW Bethel Church Cemetery 7
4 86--0.6 mile SE Spoll Pond Groundwater 87-103 - 4.4 mIIes WSW Brunswick County Quarterly 2 liters Gamma (GW)** LandfIIi 104-107--0.3 to 0.4 miles NNE BSEP Landfill Milk 76--0.7 mile SE Stevens' Farm Semimonthly 2 gallons 1-131, Gamma (MS) 77-14.5 miles NNW Johnson's Fare
Surface 73--0.7 mile NE Intake canal
- Composite Monthly Gamma--Monthly Water 74-4.9 miles SSW discharge Sample (SW) Canal at stiiiing pond
' Control Station
- Not required by technical specifications.
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TABLE 2-1. (Coatinmed)
Sample' .
Sampiing
-Type Sampline Plaint and Description Frequency Sample Size Sample Analysis Direct 13 1.1 miles E Refer to Figures 1-1, Quarterly Not Applicable 'TLD Readout Radiation 14 1.0 mile ESE 1-2, 1-3, 1-4, and (TL) 15 0.9 mile SE 1-5
.16 1.1 miles SSE 17 1.1 mile S 18 1.0 mile S 19 1.0 mile SW
' 20 1.2 miles W 21 1.0 mile WNW 22 0.9 mile NW 23 0.9 mile NNW 24 1.0 mile N 25 1.2 mile NNE 26 0.5 mile NE 27 0.9 mile ENE 28 1.0 mile WSW 29 1.5 miles ESE 30 1.7 miles SE 31 2.0 miles SSE 32 2.1 miles S ,
33 2.9 miles SSW 34 5.3 miles SW 35 4.6 miles WSW 7
m 36 37 3.0 miles W 8.7 miles WNW 38 5.9 miles NW 39 3.8 miles NNW 40 2.3 miles N ,
41 2.0 miles NNE 42 2.0 miles NE 43 2.6 miles ENE 44 5.7 miles E near Kure Beach 45 4.3 miles E at Ferry Slip N.H. Co.
46 5.5 miles ENE at Ft. Fisher AFB 47 7.2 miles ENE at Kure Beach 48 9.3 miles NE.at Carolina Beach 49 5.5 miles NW at Boliing Spring Lakes 50 11.0 miles W at Sunset Harbor '
51 5.3 miles SW at Yaupon Beach ,
52 6.9 miles WSW at Long Beach 53 8.5 miles WSW at Ocean Crest Pier '
54 10.9 miles WSW at Long Beach Pier 55 12.0 miles WSW at Blue Water Point 56 4.5 miles S at Ft. Caswell Bapt. Assy.
57 4.8 miles SSW at Caswell Beach 58 5.3 miles SSE at Bald Head Island 59 10.0 miles NNE Hwy. 133 at SR 1521 60 9.5 miles N SR 1539 at SR 1521 61 9.5 miles E Hwy. 87 at SR 1513 62 10.0 miles WNW Midway Road at SR 1508 63 11.0 miles W Hwy. 211 at SR 1112
Following is a tabulation of the specific methods used in monitoring the gaseous effluent and liquid effluent pathways of exposure to man.
Pathway of Exposure to Man Media Sampled External Dose TLD Ingestion Pathway Food Crops Milk Samples Fish and Invertebrates Samples Sediment (Shoreline and Bottom)
Groundwater Surface Water Inhalation Air Samples 2-6
LOCATIONS OF RADIOLOGICAL ENVIRONMENTAL CIRECT RADIATION MONITORS (TLD's)
FIGURE 2-1 3
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LOCATIONS OF RADIOLOGICAL ENVIRONMENTAL DIRECT RADIATION MONITORS (TLD's)
FIGURE 2-3 WILMINGTON
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LOCATIONS OF RADIOLOGICAL ENVIRONMENTAL WATERBORNE AND INGESTION PATHWAY STATIONS (SW, SS, MS, FI, FC )
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LOCATIONS OF RADIOLOGICAL ENVIRONMENTAL AIR MONITORING STATIONS (AC, AP)
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TABLE 2-2 ENVIRONMENTAL RADIOLOGICAL MONITORING PROGRAM
SUMMARY
Brunswick Steam Electric Plant Docket Numbers 324 and 325 Brunswick County, North Carolina Calendar Year 1984 Type and Lower All Indicator Location w/ Highest Annual Mean Medium or Pathway Total No. of Limit of Locations (2) Name, Control Locations Sampled or Measured Measurements Detection Mean Distance, and Mean Mean Performed LLD (1) Range Direction Range (2) Range (2)
(Unit of Measur - t)
Air Cartridge I-131 3.00E-2 All less than LLD All less than LLD All less than LLD 3 475 (pCl/m )
Air Particulate Gross Beta 4.00E-3 1.83E-2 (420/422) PMAC-intake Canal 1.97E-2 (51/53) 1.64E-2 (53/53) 3 475 I3I 5.97E 1.37E-l 0.6 mile NE 8.09E 3.62E-2 5.50E-3 - 3.36E-2 (pCl/m ) a Gamma (10) "2.00E-3 9.81E-3 (1/4) Spoll Pond 9.81E-3 (1/4) All less than LLD 36 (Single Value) 0.6 mile SE (Single value) .
L W Botton Sediment Gamma (10) 3.30E-2 5.98E+0 (6/15) Diset.arge Canal 1.10E+1 (3/3) All less than LLD 5.18E+0 - 1.70E +1 !
(pCl/g. dry) 18 I"I 2.19E 1.70E+1 at Stliling Pond Co-60 4.9 miles SSW .
l Cs-137 2.10E-2 4.14E-1 (5/15) Discharge Canal 5.68E-1 (3/3) 3.35E-1 (3/3).
7.08E 6.18E-1 at Stilling Pond 4.82E 6.18E-1 2.13E-l - 4.70E-1 4.9 miles SSW Mn-54 1.80E-2 8.97E-1 (5/15) Discharge Canal 1.40E+0 (3/3) All less than LLD 7.03E 2.61E+0 at Stilling Pond 6.77E-l - 2.61E+0 l
4.9 miles SSW Fish and Gamma (10) 7.24E-2 (1/6) Atlantic Ocean 7.24E-2 (1/2) 3.32E-2 (1/6) latvertebrates 12 (Single value) at Discharge (Single Value) (Single Value)
(pCI/g. dry) Cs-137 2.30E-2 5.0 miles SSW
TABLE 2-2 ENVIHolGENTAL RADIOLOGICAL MONITORING Pfl0lRAM SUB01ARY Brunswick Steam Electric Plant Docket Numbers 324 and 325
-Brunswicit County, North Carolina Calender Year 1984 Type and Lower All Indicator Location wA41ghest Annual Mean tiedium or Pathway Total No. of Limit of Locations (2) Name, Control Locations Sampled or Measured Measurements Detection Mean Distance, and Mean Mean Periormed LLD (1) Range Directlon Range'(2)' Range (2) :
(Unit of Measurement)
Broadleaf Vegetation Gamma 8.00E-3 9.65E-3 (1/48) - Bethel Church Road 9.65E-3 (1/12) 4.41E-2 (1/2) -
(pCI/g, wet) 50 ($1ngle Value) 0.9 mile NW (Single Value)~ (Single' Value) ;
I Cs-137 Groundwater Gamma (10) N/A All less than LLD -All less than LLD No Control (pCl/l) 84 (5)
Nilk 1-131 3.00E-1 Not-Sampled II Not Sampled (6) All less than LLD (pCi/l) 4 (6) to N/A Not Sampled (6) Not Sampled (6) All less than LLD h Gamma (10)
Sediments - Gamma (10) N/A All less than LLD All less than LLD No Control i Shoreline 2 (pCI/g, dry)
Surface Water Gamma (10) N/A All less than LLD All less than LLD All less than LLD (pCi/1 ) 24 Tritium 5.20E+2 All less than LLD All less than LLD All less than LLD 8
TLD TLD Readout I mR I8I III 9.82E-1 (199/199) PMAC - Intake Canal 3.15E+0 (4/4) No Control (2illires per week) 199 III 6.00E 1.50E+0 0.5 mile E 1.0E+0 - 1.3E+0
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N FOOTNOTES TO TABLE 2-2 q
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- 1. Lower limit of detection (LLD) is calculated based on 4.66 standard devi- ,
ations above background using typical sample size in a given counting =.-
time. Due to counting statistics and varying volumes, occasionally lower _
LLDs are achieved. See Table 6-1. c -
- 2. Mean and range are based on detectable measurements only. The fractions _
of detectable measurements at specific locations are indicated in paren- e thesis. =
- 3. Air particulate and charcoal cartridges were collected weekly. There -
were 53 weeks in 1984 times 9 air monitor stations for a total of 477 samples. Listed below are the two samples that were collected but not s used for this report due to low volumes.
(
- a. Location 64 (February 6, 1984)--motor failure. k
- b. Location 64 (October 29, 1984)--blown fuse. _
- 4. Bottom sediment samples are required semiannually at six locations for a l' total of 12 samples. However, due to increased concentrations of radio- i nuclides, additional sampling was performed for a total of 18 samples. ,
Gamma analyses were performed on the samples, j 1
- 5. Seventeen groundwater stations at the Brunswick County landfill require '
quarterly gamma analysis for a total of 68 samples. Four stations at the -
Brunswick Steam Electric Plant landfill require gamma analysis quarterly ,--
for a total of 16 samples.
- 6. Milk samples were not available after January 1984 from Locations 76 and
- 77. The cow at Location 76, Stevens' Farm, was dry. In August 1984 the f cow was sold to Mr. Fred Smith, who maintains beef cattle only. Location 77, Johnson's Farm, was sold in January 1984. Four samples were -
collected in January 1984 prior to the sale of the dairy.
- 7. Fifty-one environmental TLD locations are sampled quarterly for a $
possible total of 204 samples. Five TLDs were missing in 1984 and are .
discussed in Section 5.4. This yields a total of 199 environmental TLD samples for 1984.
- 8. Dependent on ambient background conditions. ?
- 9. Minimum sensitivity is approximately 1 mR. Refer to Section 6.5 for .
additional information.
- 10. Summary of gamma analysis results in this report does not include the following naturally occurring isotopes since most environmental samples contained some or all of these: Be-7, K-40. T1-208, Pb-212, Bi-212, Bi-214, Pb-214, Ra-226, Ac-228, and Th-234. -
A 2-14 -
3.0 INTERPRETATIONS AND CONCLUSIONS
-3.1-~ Air Samples The gross beta results for air particulate samples collected during the year of 1984 are below the preoperational levels. All indicator
-station -activities averaged 1.77E-2 pCi/m 3 compared to 3
9.83E-2 pC1/m over the entire preoperational monitoring period.
-The 1984 average activity of. control station samples was 3
1.64E-2 pCi/m , The gross beta plots in Figures 3-1 through 3-8 show each indicator station in comparison to the control station.
'They verify no significant changes in the indicator location activities in comparison to data from previous years as shown in Table 3-1.
The -particulate sample collected for the week of September 10-16, 1984, from Location 72, 0.6 mile SE, Spoil Pond, revealed cobalt-60 at .a concentration of 9.81E-3 picocuries per cubic meter. Due to gusting winds and high wind velocities associated with Hurricane Diana which entered the.Southport area on September 12, 1984, some slightly contaminated particulate matter became airborne and was subsequently collected on the filter. The deposition was an isolated incident and was not seen again at this location or any other. location. Given below are the dose calculations associated with this sample calculated as per Regulatory Guide 1.109 for the maximum exposed individual:
3 Annual organ dose (mrem /yr) = intake (m/yr) x annual average 3
concentration (pCi/m ) x inhalation
, dose factor (mrem /pC1)
Adult lung dose = 8,000 x 9.81E-3 4 52 x 7.46E-4 = 1.13E-3 mrem /yr Teen lung dose = 8,000 x 9.81E-3 4 52 x 1.09E-3 = 1.65E-3 mrem /yr Child lung dose = 3,700 x 9.81E-3 4 52 x 1.91E-3 = 1.33E-3 mrem /yr Infant lung dose = 1,400 x 9.81E-3 4 52 x 3.22E-3 = 8.50E-4 mrem /yr 3-1
As the calculations indicate, the maximum dose received is 1.65E-3 mrem /yr, which is not a significant contribution to the annual dose.
Determination of I-131 in air via charcoal was made using gamma spectrometry. No iodine-131 was detected for the entire year.
3.2 Milk Samples The current milk sampling program requires semimonthly sampling from two locations. They are Stevens' farm, location 76, and Johnson's dairy, Location 77. The single cow located at the Stevens' farm produced no milk in 1984. As of August 1984, the cow was sold to Mr. Fred Smith who maintains the herd of beef cattle for Pfizer Chemical Company. Discussions with Mr. Smith indicated that he had no plans to use the cow for milking in the future.
In January 1984 four milk samples were collected from the Johnson's dairy. The sampling program in effect through January 1984 required weekly samples to be collected. The dairy was sold in late January 1984 and is no longer a functional dairy. The iodine-131 and gamma analyses revealed all values were less than LLD.
3.3 Vegetation--Food Crop 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. Four gardens are maintained on the site boundary to satisfy the first requirement. Of the 48 samples from these gardens, only one location, Bethel Church Road.
0.9 mile NW, revealed activity, cesium-137, at a concentration of 9.65E-3 pCi/ gram, wet. This value may be compared to the single value of Cs-137 seen at a control location of 4.41E-2 pCi/ gram, wet. Note that the control activity was approximately four times greater than the indicator location. Therefore, this measurable activity was not attributed to BSEP plant operations.
3-2
- 3.4' Soil--Shoreline Sediment The Technical' Specifications- require one sample location for shoreline sediment located on the beach of the' Atlantic Ocean near
- the' ocean discharge location of the Caswell Beach pumping station..
All values from the gamma isotopic analyses were less than LLD.
Additional' sampling on bottom sediments from the intake and discharge canals- has _ been performed in a manner similar to the programs' in 1982 and 1983.- _The isotopes found in the bottom sediment that may be attributed to plant operations are cobalt-60 (Co-60), manganese-54. (Mn-54), and cesium-137 (Cs-137). The location with the highest concentration is at the stilling pond at the. Caswell Beach pumping station.- The stilling pond .has consistently- had .the highest concentrations since expanded
- surveillance has been performed on the canal system. Although the.
highest concentration of Co-60 (17 pCi/ gram) was measured in 1984,
, no trend indicating a significant buildup of activity in the canal system is-indicated. The Co-.60 activity appears to be consistent with sampling deviation seen in previous samplings. As shown by -
- Figure 3-9, the average Co-60 concentration is 5-8 pCi/ gram for the period from 1982 through 1984. The activity of the bottom sediment in the discharge canal is not seen as a health hazard.
. 3.5 Surface Water Surface water is sampled monthly from two locations and analyzed for tritium and gamma-emitting radionuclides. In all samples, activities were less than LLD.
3.6 Fish and~ Invertebrates
- Fish and invertebrata samples are collected semiannually when in season and analyzed for gamma-emitting radionuclides. Fish are collected as (1) free swimmers and (2) bottom feeders. Inverte-brates may include shrimp, oysters, and crabs.
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The gamma analyses for fish collected in the Atlantic Ocean nehr the b discharge of the Caswell Beach pumping station revealed a single p
incident of Cs-137 with a concentration of 7.24E-2 pCi/g, dry. This
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[ may be compared to samples obtained during preoperational testing m
) when Cs-137 was detected in 5 of 23 samples with an average T h concentration of 1.7E-1 pCi/ gram. Table 3-2 provides dose 2
{ assignments from the Cs-137 in the fish sample. The Cs-137 ]
concentration of 7.24E-2 pCi/g, dry, corresponds to 1.68E-2 pCi/g, wet. As indicated, the or5an doses are less than 0.04 mrem /yr; and y the total body dose is 0.025. The limits for organ and total body :~
doses are 20 mrem /yr and 6 mrem /yr, respectively, as per 10CFR50, i Appendix I.
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m 3.7 Groundwater
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( Groundwater samples are collected and analyzed quarterly for gamma- $
ft emitting radionuclides. All were found to be less than LLD. _--
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3.8 External Radiation Dose (TLD)
Environmental dosimetry data did not show any significant changes i from previous years' data. Location 26, PMAC (0.5 mile NE), showed the highest average dose as indicated in Table 2-2.
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3.9 Sumary
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l All samples analyzed met the LLD requirements as established by -
Technical Specification 6.9.1.7.h and Table 4.12.1-1. In summary. -
the analyses from the environmental media surrounding the Brunswick .
Plant confirm that the environmental impact of the plant during 1984 ;
was nominal. 2 a
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TABLE 3-1 GROSS BETA AIR PARTICULATE ACTIVITY AVERAGES FOR SIX-MONTH PERIODS COMPARISON OF PREOPERATIONAL DATA,1983 DATA, AND 1984' DATA (pCi/m3 )
l Location 1st/73 2nd/73 1st/74 2nd/74 1st/83 2nd/83 1st/84 2nd/84 AP-64 1.5E-2 2.9E-2 1.7E-1 1.1E-1 1.9E-2 2.2E-2 1.7E-2 2.1E-2 AP-65 --
3.1E-2 1.6E-1 1.2E-1 1.8E-2 2.2E-2 1.7E-2 2.2E-2 AP-66 --
3.4E-2 1.7E-1 1.1E-1 1.7E-2 2.0E-2 1.7E-2 1.9E-2 4'
AP-67 1.6E-2 3.2E-2 1.5E-1 .1.1E-1 1.7E-2 2.3E-2 1.7E-2 2.0E-2 '
AP-68 1.7E-2 3.2E-2 1.6E-1 1.0E-1 1.6E-2 1.9E-2 1.5E-2 1.8E-2 AP-69 1.5E-2 2.8E-2 1.6E-1 1.1E-1 1.2E-2 1.8E-2 1.5E-2 1.9E-2 l AP-70 1.6E-2 3.1E-2 1.8E-1 1.1E-1 1.9E-2 1.9E-2 1.8E-2 2.0E-2 AP-71 -- -- -- --
1.7E-2 1.8E-2 1.6E-2 2.3E-2 AP-72 -- -- -- --
1.7E-2 1.9E 1.6E-2 1.9E-2 l
l l
L TABLE 3-2 DOSE COMITMENTS FROM FISH AND INVERTEBRATES Assumptions are based on the maximum exposed individual. Calculations are modeled from Regulatory Guide 1.109. The Cs-137 concentration is 7.24E-2
-pCi/g, dry, and 1.68E-2 pC1/g, wet.
Child Teen Adult Consumption (kg/yr) ' 6.9 - 16 21 Ingestion factors (mrem /pCi) -- -- --
Bone 3.27E-4 1.12E-4 7.97E-5 Liver 3.13E-4 1.49E-4 1.09E-4 Total Body 4.62E-5 5.19E-5 7.14E-5 Limits 10CFR50 App. I (mrem /yr)
Dose (mrem /yr)
Bone 0.038 0.030 0.028 20 Liver 0.036 0.040 0.038 20 Total Body 0.005 0.014 0.025 6 3-6
GROSS BETA ACTIVITIES AIR PARTICULATE SAMPLES Figure 3-1 Location 64 Figure 3-2 Location 65 Figure 3-3 Location 66 Figure 3-4 Location 67 Figure 3-5 Location 69 Figure 3 Location 70 Figure 3-7 Location 71 Figure 3-8 Location 72 BOTTOM SEDIMENT ACTIVITY Figure 3-9 Discharge Canal at Stilling Pond L-
~ ;
3-7
CP&L ENVIRONMENTAL SURVEILLANCE GROSS BETA ACTMTf FOR AIR PARTICULATE SAMPLES
- FOR SAMPLE STATION O FOR CONTROL STATION PLANT SAMPLE COLLECTED FOR=BSEP POINT SAMPLE COLLECTED FROW =0064 0.0800-P :
C 0.07002 1 :
0.06002 P :
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CP&L ENVIRONMENTAL SURVEILLANCE GROSS BETA ACTMTY-FOR -
AIR PARTICULATE SAMPLES
- FOR SAMPLE STATION O FOR CONTROL STATION PLANT SAMPLE COLLECTED FOR=BSEP POINT. SAMPLE COLLECTED FROM=0065 0.0800-P :
C 0.0700-I :
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f CP&L' ENVIRONMENTAL SURVEILLANCE-GROSS BETA ACTMTY FOR AIR PARTICULATE SAMPLES
.* FOR SAMPLE STATION '
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- FOR SAMPLE STATION O FOR CONTROL STATION PLANT SAMPLE COLLECTED FOR=BSEP POlHT SAMPLE COLLECTED FROM=0069 0.0800- -
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CP&L ENVIRONMENTAL SURVE!LLANCE GROSS BETA ACTMTY FOR AIR PARTICULATE SAMPLES
- FOR SAMPLE STATION O FOR CONTROL STATION PLANT SAMPLE COLLECTED FOR=BSEP P0lNT SAMPLE-COLLECTED FROM=0071 0.0800- '
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x 4.0 ANNUAL LAND-USE CENSUS The 1984 land-use census was performed in accordance with Technical Specification 3.12.2. The door-to-door method was used in conjunction with U.S. geological survey maps, state road maps, city of Southport maps, and personal knowledge of the area. The intent of the survey was to locate the nearest resident, garden, milk animal (cow or goat), and meat animal (beef, hog, or fowl) in each of the 16 compass sectors.
l Table 4-1 summarizes the locations of the nearest milk cow, milk goat, 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.
t a
e I
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i W
4-1
TABLE 4-1 DISTANCE TO THE NEAREST SPECIAL LOCATIONS FOR THE BRUNSWICK STEAM ELECTRIC PLANT (MILES)
Milk Milk Meat Sector Residence (Miles) Cow Goat Animal Garden N 0.9 -- -- --
1.0 NNE 1.4 -- --
1.4 1.4 NE -- -- -- -- --
ENE -- -- -- -- --
E 1.3 -- --
1.1 --
ESE 1.6 -- --
0.9 1.6 SE 1.0 -- --
1.0 -
SSE 0.9 -- --
0.9 0.9 S 1.4 -- -- --
1.8 SSW 1.4 -- --
1.5 1.5 SW 1.0 -- --
1.0 1.0 WSW 1.1 -- --
1.8 1.1 W 0.9 -- -- --
0.9 WNW 0.9 -- -- --
0.9 NW 0.9 -- -- --
0.9 NNW 0.9 -- -- --
0.9 Distances are estimates from composite map--approximate crror 0.1 miles.
4-2
6 TABLE 4-2 LISTING OF GARDENS WITHIN THREE MILES Sector Distance N 1.0 NNE 1.4 ESE 1.6 SSE 0.9 S 1.8**
SSW 1.5**
SSW' 1.6 SSW 1.7 SSW 1.9 SSW 2.0**
SSW 2.1**
SSW 2.5 SW 1.0 WSW 1.1 WSW 1.5 WSW 2.8 W 0.9 W 1.0 W 1.1 W 2.3 WNW 0.9 WNW 1.1**
NW 0.9 NNW 0.9
- Mu lti lp e gardens located at this location.
4-3
5.0 MISSED SAMPLES AND ANALYSES 5.1 Air Cartridge and Air Particulate The samples collected from the stations listed below with their respective dates were collected but not analyzed due to the reasons stated. _
Location 64--February 6, 1984--low volume; sampler motor failure Location 64--October 29,.M84--low volume; blown fuse 5.2 Food Crops
, Samples were not available from Location 84, Control, from July ,
j through December i
l 5.3 Milk
- Milk samples were not available from Location 76, Stevens' farm.
l The cow was dry for the entire year and was sold in August 1984 to
?
Mr. Fred Smith who operates the Pfizer Chemical Company beef herd.
Milk samples were not available from location 77 after January 1984. The farm was sold and is no longer an operational dairy.
5.4 TLD Location 22--Second quarter--missing in field l
Locations 51, 52--Third quarter--missing in field i
Locations 19, 48--Fourth quarter--missing in field 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 is approximately 3
0.004 pC1/m for air particulates.
Air particulate samples are mounted in 2-inch stainless steel plan-chets and counted directly.
6.2 Tritium Liquid samples requiring tritium analysis are first distilled. Five milliliters of the distillate are mixed with 10 milliliters of liquid scintillation cocktail and counted on a liquid scintillation counter for up to 300 minutes. The LLD is approximately 520 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 detector and each charcoal cartridge is counted individually.
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 LLD is approximately 0.3 pCi/ liter.
6.4 Gama Nectrometry Ge(L1)
Gamma spectrum analysis utilizes germanium or Ge(Li) detectors with thin aluminum windows housed in steel and lead shields. The analyzer systems are Nuclear Data 4420 and 6685. Table 5-1 l
6-1
- k. , &,
summarizes LLD values derived from instrument sensitivity, based upon a blank sample background.
Air particulate composites are fitted into a petri dish and analyzed directly.
Liquid samples, except milk, are boiled down to a small volume, transferred to a polyethylene beaker, and analyzed directly.
Bottom and shoreline sediments are dried, weighed, and then analyzed in a marinelli beaker.
Food crops are weighed wet and analyzed in a marinelli beaker.
Fish samples are cleaned and dressed similar to meal preparation.
These samples are then dried at 100*C and ground to produce a L homogeneous mixture. These are placed in a polyethylene beaker and analyzed.
Qc 6.5 Thermoluminescent Dosimetry .3 pt gq _8 Each area monitoring station includes a polyethylene packet, which Q_ _ .;
4,,, ,
is an polyethylene bag containing three calcium sulfate phosphors p?
contained in a Panasonic UD-814 badge. The packet is light-tight -
and the bag is weather resistant. RB-(N?
..;n >
Dosimeters are machine annealed before field . placement.
Following pf
receipt from the field, each dosimeter is read utilizing Panasonic . .; - .. .u TLD readers. This instrument integrates the light photons emitted ((f.[
from traps deexcited above 150*C.
The lower-energy traps are auto- 7,"y. ,..
matica11y eliminated through a preheat cycle. Calibration is f :.. ;
checked regularly using dosimeters irradiated to known doses. Prior 7,::
to the measurement of each dosimeter, the instrument is checked .y through use of an internal constant light source as a secondary Js l.T.
. .t -
standard. The minimum sensitivity of the dosimeters used is approx- 3.'J .,
imately 1 mR. -
? ?,. _ " '
6-2
i The exposure reported is corrected for exposure received in transit and storage through the use of control dosimeters.
6.6 EPA Laboratory Intercomparison Program The Radiological Environmental 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 1984, 32 samples representing 4 major environmental media (water, milk, food, and air filters) and urine were analyzed. Data on the known activities and the 3e control limits for 30 of the samples have been received from EPA. These 30 samples required triplicate determinations of the activity of 86 radionuclides. 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 (a)
From Known Activity Percent of Analyses
< 1a 40
< 2a 65
< 3a 85 Of the 86 analyses, 13 (15 percent) fell outside the 3a control j limit.. However, 6 of the 13 values involved strontium-90 analyses
! for which EPA reports an unusually tight 3a value (i.e., 2.6 j pC1/ unit versus 8.7 pCi/ unit for comparable activities of strontium-l 89, chromium-51, cobalt-60, cesium-137, zinc-65, ruthenium-106, cesium-134, cesium-137, gross alpha and gross beta, and 10.4 pC1/ unit for iodine-131). If a larger 3a value of 8.7 pC1/ unit is applied to the Sr-90 activities, all 6 of the results fall within the EPA control limits. Because of the exceptionally narrow limits 6-3
for Sr-90, no corrective action toward the HE&EC analytical methods is considered necessary for a total of 92 percent of the labora-tory's analyses.
The remaining 7 results which were beyond the control limits were randomly distributed in time and among nuclides. No trend developed -
and no corrective actions were deemed necessary. For example:
One gross beta result on an April water sample was lower than the known activity by 18 percent, but subsequent analysis in May, July, September, and October were within limits. --
The Cs-137 activity reported for the June milk sample was 28 percent high. Subsequent Cs-137 analyses including the October milk sample was within control limits. -
A natural potassium value for a food sample was only 12 percent high but still outside the control limit.
The Zn-65, Ru-106, and Cr-51 values in the October mixed gamma samples were 16 percent, 34 percent, and 38 percent high, respectively, while the other 3 components of the mixture Co-60, Cs-134, and Cs-137 were within 1-2o of the known values.
A. single Cr-51 value in the January mixed gamma was 75 percent high. Cr-51 analyses are difficult because of the low gamma
, abundance (9.8 percent), low energy (320 kev), and the short 4
half-life (27.8 days). The June sample activity was within limits, but as cited above, the October sample value was out of the control limit.
6.7 Lower Limits of Detection All samples analyzed met the Lower Limits of Detection (LLD) required by Technical Specification 6.9.1.7.h and Table 4.12.1-1.
Typical LLD values for the samples analyzed are listed in Table 6-1.
6-4
Table 6-1 Typical 1,ower Limits of Detection (LLD)
Ge(L1) Gamma Spectrometry Air Samples (LLD)
Cs-134 2.0E-3 pC1/m3 Cs-137 1.0E-3 Ba-140 4.0E-3 La-140 1.0E-3 Other Expected 1.0E-3 to Gamma Emitters 2.0E-2 Water Samples (LLD)
Cr-51 16 pC1/1 Co-58 3 0 Co-60 4 Mn-54 2 Cs-134 3 Cs-137 3 Ba-140 7 La-140 3 Other Expected 3 to Gamma Emitters 50 Soil and Bottom Sediments (LLD)
Cs-134 2.4E-2pCi/g(dry)
Cs-137 2.1E-2 Cr-51 9.1E-2 Co-58 1.8E-2 Co-60 3.3E-2 Mn-54 1.8E-2 Other Expected 1.0E-3 to Gamma Emitters 9.0E-2 L
6-5
t Table 6-1 (Continued)
Fish and Vegetation (LLD)
I-131 7.0E-3 pCi/g (wet)
Cs-134 8.0E-3 Cs-137 8.0E-3 Cr-51 5.0E-3 Co-58 7.0E-3 Co-60 1.0E-2 Mn-54 7.0E-3 Other Expected 7.0E-3 to Gamma Emitters 7.0E-2 Shrimp, Benthos, and Oysters (LLD)
I-131 9.0E-3 pCi/g (wet)
Cs-134 1.0E-2 Cs-137 1.0E-2 .
Cr-51 6.0E-2 Co-58 1.0E-2 Co-60 1.0E-2 Mn-54 1.0E-2 Other Expected 8.0E-3 to Gamma Emitters 1.0E-1 6-6
7 Cp&L Carohna Power & Light Company
, -. .-+ r.
Brunswick Steam Electric Plant P. O. Box 10429 Southport, NC 28461-0429 April 26, 1985 FILE: B09-13510C SERIAL: BSEP/85-0804 Dr. J. Nelson Grace, Administrator U.S. Nuclear Regulatory Commission Suite 2900 101 Marietta Street NW Atlanta, GA 30323 BRUNSWICK STEAM ELECTRIC PLBT UNITS 1 AND 2 DOCKET NO. 50-325 AND 50-324 LICENSE NO. DPR-71 AND DPR-62 1 ANNUAL ENVIRONMENTAL RADIOLOGICAL MONITORING REPORT
Dear Dr. Grace:
Enclosed are two copies of the Annual Environmental Radiological Monitoring Report for Brunswick Steam Electric Plant covering the period from January 1, 1984, through December 31, 1984. -
This report is submitted in accordance with Brunswick Technical Specifications 6.9.1.6 and 6.9.1.7.
Very truly yours, C. R. Dietz, General Manager Brunswick Steam Electric Plant -
KWP/ag Enclosure cc: NRC Document Control Desk s
,