RBG-43844, Radiological Environ Operating Rept for River Bend Station 960101-1231
| ML20138H836 | |
| Person / Time | |
|---|---|
| Site: | River Bend  |
| Issue date: | 12/31/1996 |
| From: | King R, Reed M, Wells A ENTERGY OPERATIONS, INC. |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| RBF1-97-0128, RBF1-97-128, RBG-43844, NUDOCS 9705070300 | |
| Download: ML20138H836 (60) | |
Text
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1 Ent rgy Operations,Inc.
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River Bend Station l
5485 U S Hghway 61 PO Box 220 y)ff) e St. Francisville, LA 70775 1 ( 0 L, Tef 504 336 6225 Fax 504 635 5068 Rick J. King Deector FJac! ear Safety & Regulatory Af' airs May 1,1997 U.S. Nuclear Regulatory Commission Document Control Desk Mail Stop PI-37 Washington, DC 20555-0001
Subject:
Radiological Environmental Operating Report for 1996 River Bend Station - Unit I License No. NPF-47 Docket No. 50-458 File Nos.:
G9.5, G10.6 RBG-43844 RBFI-97-0128 Ladies and Gentlemen:
Enclosed is the River Bend Station (RBS) Annual Radiological Environmental Operating Report for the period January 1,1996, through December 31,1996. This report is submitted in accordance with the RBS Technical Specifications, Section 5.6.2. Data used to develop this report is being maintained as permanent plant records and can be made available for review upon request.
Should you have any questions regarding the enclosed information, please contact Mr. David Lorfing of my staff at (504) 381-4157.
1 Sincerely, 1
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. Radiological Environmental Operating Report for 1996 l
May 1,1997 RBG-43844 RBFI-97-0128 Page 2 of 2 l
cc:
U.S. Nuclear Regulatory Commission Region IV 611 Ryan Plaza Drive, Suite 400 Arlington, TX 76011 NRC Resident inspector PO Box 1050 St. Francisville, LA 70775 Mr. David L. Wigginton U.S. Nuclear Regulatory Commission M/S OWFN 13-H-3 Washington,DC 20555 j
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> RADIOLOGICAll ENVIRONMENTARORERATINGlREP.ORTi m
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- RIV5R?BnNDiSTATiDNF FOR THE OPERATING PERIOD January 1,1996 - December 31,1996 McGehee Ree Specialist - Environmental, Sr.
Reviewed by:
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Arlie D. Wells Superintendent-Radiation Control Superi tendent - Chemistry (Acting) pproved by:
im General yanager - Plant Operations 1
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I RIVER BEND STATION RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT FOR 1996 l
Abstract During 1996, radiological environmental monitoring and a land use census were conducted in the vicinity of River Bend Station (RBS). As part of the monitoring program, the RBS Radiological Environmental Monitoring Program (REMP) laboratory participated in a performance evaluation environmental cross-check program with 95 percent of analytical results within controllimits. The land use census revealed two changes in receptor locations since 1995. Twelve monitoring exceptions, involving Technical Requirements Manual (TRM) required samples, occurred out of a total effort of 934 samples collected and 934 subsequent analyses performed. None of the exceptions had significant impact on program quality. Although well below the required detection limits, slightly elevated (relative to baseline data) levels of Cesium-137 were sporadically measured in both indicator and control media; these concentrations were presumably attributable to the 1986 incident at Chemobyl, Russia. The only measurable increases in radionuclide activity, or levels of radiation above baseline levels in the vicinity of RBS during 1996, which are attributed to plant operation, are the expected low levels in the liquid discharge line. The levels of activity measured in the liquid discharge were slightly above required levels of detection, but well below TRM reporting levels. The l
1996 Radiological Environmental Monitoring Program thus substantiated the adequacy of source control and effluent monitoring at River Bend Station, i
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l RIVER BEND STATION I
RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT FOR 1996 TABLE OF CONTENTS i
Page
1.0 INTRODUCTION
...................1 2.0 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM............. 1 2.1 P u rp o se/B a se s................................................................ 1 2.2 Environmental Radiation Exposure Pathways................................. 4 2.3 Land Use Census for 1996......................................................... 5 2.4 Environmental Cross-Check Program Results for 1996....................... 5 2.5 Prog ram Exceptions.............................................................. 5 3.0 INTERPRETATION OF REMP RESULTS...............
....................21 3.1 Summary of Operational REMP Results........
.........................21 3.2 Comparison of Operational and Baseline REMP Results.,................... 25 3.3 Comparison of REMP Results with Operational Controls.............
.. 26 APPENDICES j
A.
Listings of 1996 REMP Results B.
Summary of Preoperational REMP (Baseline) Results ii
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I RIVER BEND STATION i
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RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT FOR 1996 LIST OF FIGURES Page Figure 1.
Far-field Radiological Environmental Monitoring Locations............. 2 l
Figure 2.
Near-field Radiological Environmental Monitoring Locations....
.......3 i
Figure 3.
Environmental Cross-Check Program Results per Normalized Deviation Control Limits.......................................................... 18 I
Figure 4.
Liquid Discharge H-3 Activities (1.21 Report) versus REMP R e s u lts....................................................................... 2 8 LIST OF TABLES Table 1.
Radiological Environmental Monitoring Program.......................... 6 Table 2.
Results of Land Use Census................................................. 14 Table 3.
Environmental Cross-Check Program Participation Results..........................................................................15 Table 4.
Monitoring Program Exceptions...................
.........18 Table 5.
Radiological Environmental Monitoring Program Summary.............. 22 Table 6.
Summary Comparison of Liquid Effluent Quantities / Activities and REMP Discharge Line Monitoring Results........................... 27 i
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i RIVER BEND STATION l
RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT FOR 1996 i
1.0 INTRODUCTION
This Annual Radiological Environmental Operating Report for the period of January 1 through December 31,1996, is submitted in accordance with Technical Requirements Manual (TR 5.6.2) as required by Technical Specification (5.6.2) of Appendix A to River Bend Station License Number NPF-47.
River Bend Station (RBS) is a 936 MWe General Electric boiling water reactor located in West Feliciana Parish, Louisiana,4.1 km southeast of St. Francisville (Figure 1). Waste heat from RBS is dissipated via a system using five mechanical draft cooling towers which draw makeup water fror.; t,.e Mississippi River, 3.3 km to the west. Blowdown from the cooling tower system dilutes low-level liquid radioactive waste and is discharged to the Mississippi River through a 4.4 km buried pipe located downstream of the intake structure (Fig. 2). Gaseous radioactive effluents are released through the main plant exhaust duct, the fuel building exhaust duct, and the radwaste building exhaust duct.
The area within a 16-km radius of RBS includes substantial portions of West Feliciana, East Feliciana, and Pointe Coupee parishes, as well as small portions of East and West Baton Rouge parishes. Most of the land in this area is devoted, in about equal proportions, to forests and agriculture (pasture, various crops). Wetlands, streams / lakes, and urban / improved lands comprise the remainder of the immediate vicinity of the plant. Besides St. Francisville, (4.1 km northwest), human population centers near RBS are New Roads (10 km southwest) and Jackson (12 km northeast).
Industrial facilities in the immediate vicinity of RBS are Crown Vantage Paper Plant (5 km south); Big Cajun No. 2 Power Station (5 km southwest); and the Corps of Engineers concrete casting yard (5 km west).
The area within an 80-km radius of RBS contains all or portions of 19 Louisiana parishes and five Mississippi counties.
This area has generally the same makeup as that of the immediate vicinity of RBS, although wetlands, agricultural lands, and urban / improved lands are relatively more extensive (at the expense of forested lands) in the southwestern and southeastern quadrants. Baton Rouge, centered at about 38 km southeast, is the only large city in the general vicinity of RBS.
During 1996, radiological environmental monitoring in the vicinity of RBS was performed by the River Bend Station Environmental Services Group, a part of the plant Chemistry Department, with support from the plant Radiation Control Department in maintaining / calibrating air samplers. The processing of environmental dosimeters was performed by the Entergy Operations, Inc. (EOI) Central TLD Processing Facility located at Arkansas Nuclear One (ANO).
l 2.0 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM (REMP) 2.1 Purcose/ Bases The Radiological Environmental Monitoring Program (REMP) was established to provide representative measurements 4
of radiation and of radioactive materials, resulting from RBS operation, in those exposure pathways and for those radionuclides that lead to the highest potential exposures of members of the public.
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RIVER CEND STATION RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT FOR 1996 l
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Th3 REMP implementsSection IV.B.2 of Appendix 1 of 10CFR50 and thereby supplements the radioactive effluent t
l monitoring program by verifying that the measurable concentrations of radioactive materials and levels of radiation are not higher than expected on the basis of the effluent measurements and the modeling of the environmental exposure l
pathways.
v Tha REMP applies the concepts of indicator vs. control and preoperational vs. operational comparisons to verify the edequacy of source controls and resultant human radiation doses. In addition to 10CFR50, Appendix 1, the program is b sed on guidance provided in the Nuclear Regulatory Commission's Radiological Branch Technical Position, Revision 1 November 1979, as well as NRC Regulatory Guides 4.1 and 4.15.
2.2 Environmental Radiation Exoosure Pathways 4
Elements of the REMP monitor indications of the impacts of gaseous (airbome) and liquid effluents released from River Bend Station. The specific methods used in monitoring the pathways by which these effluents could lead to human exposure, based on existing demographic information, are:
HUMAN EXPOSURE PATHWAYS (A) Airborne Pathway Monitoring Media Inhalation Dose (internal)
Air Samples (Particulates and Radioiodines) i Ground Plane Dose (external)
Thermoluminescence Dosimetry (TLD)
Immersion Dose (extemal)
Thermoluminescence Dosimetry (TLD)
Ingestion Dose (internal)
Vegetation / Food Crop Samples I
(B) Direct Exoosure Pathway Monitorina Media External Dose Therm 3 luminescence Dosimetry (TLD)
(C) Waterborne Pathway Monitoring Media Ingestion Dose (internal)
Surface Water Samples Groundwater Samples Fish / invertebrate Samples Shoreline Sediment Samples immersion Dose (external)
Surface Water Samples Shoreline Sediment Samples j
Sit 3-related dispersion characteristics, demography, hydrology, land use, anticipated source terms, and the exposure pathways outlined above were considered in the selection of the sample media, sampling and analysis frequencies, sampling / measurement locations, and types of analyses. These criteria were used to establish both the preoperational and operational phases of the REMP.
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RIVER BEND STATION RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT FOR 1996 The program that evolved during the preoperational (baseline) monitoring phase incorporated all of the elements in the RBS Technical Specifications (3/4.12.1, 3/4.12.2, 3/4.12.3), now contained in the RBS Technical Requirements Manual, including special study criteria, and is illustrated in Table 1 and Figures 1 and 2.
2.3 Land Use Census for 1996 The annual land use census, which implementsSection IV.B.3 of Appendix I of 10CFR50, was con &.ted during the 1996 growing season in accordance with RBS Technical Requirements Manual (TR 3.12.2). Table 2 sum,Mrizes the results and notes changes in nearest receptor locations within 8 km from those identified in the Radubgical Environmental Operating Report for 1995.
The 1996 census identified residences within 8 km of the RBS reactor containment in all sectors except L (SW) and M (WSW). The two changes in the 1996 census involved nearest residents in sector C and D. The nearest resident in sector C (NE) was 1.4 km, compared to 1.5 km in 1995; and the nearest resident in sector D (ENE) was 1.4 km, compared to 1.6 km in 1995.
No dairy animals were found within 8 km of RBS during the 1996 census. Historically, there have never been enough dairy sites to accommodate the minimum RBS Technical Specification requirements for analysis of milk, so monitoring of broadleaf vegetation has been performed from two onsite gardens.
The garden census was discontinued in 1996, due to the note in the TRM (TRCO 3.12.2) that allows the routine sampling of broadleaf vegetation in two different sectors near site boundary in lieu of the annual garden census. Two site gardens have been maintained in sectors P (WNW) and Q (NW) for years, and a third garden was located in sector N (W)in December of 1996.
River Bend began a survey of meat animals within the 8 km radius of RBS during the 1990 census. The meat animal survey was discontinued in 1996, due to non-required activities.
2.4 Environmental Cross-Check Program Results for 1996 The RBS REMP Laboratory participated in an approved performance evaluation cross-check study program during 1996 in accordance with RBS Technical Requirements Manual (TR 3.12.3).
RBS results (Table 3) were viithin the control limits for the normalized range (precision) for all analyses, and within the "known" value (accuracy) for all but j
five nuclide analyses. The discrepancy for these analyses is discussed below.
The United States Environmental Protection Agency (USEPA) discontinued providing cross-check sample media to NRC licensees in December of 1995. RBS began purchasing environmental cross-check samples from Analytics, Inc.
in January of 1996. The statistical calculations provided by the USEPA in their study reports have been adopted and continued by RBS in evaluating the results of the cross-check samples provided by Analytics, Inc.
2.5 Program Exceotions l
l Certain samples and analyses were unavoidably omitted or altered during the 1996 operating period, out of a total effort of 934 samples collected and/or prepared, and 934 subsequent analyses performed. These exceptions and the reasons for the omissions / alterations are delineated in Table 4 in accordance with Technical Specification requirements. Corrective actions and impacts on program quality are discussed starting on page 12.
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l RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT FOR 1996 TABLE 1 l
RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM (Page 1 of 6)
Exposure Pathway Sample Point Description, Sampling and Type and Frequency of and/or Sample Distance, and Direction Collection Frequency Analysis Airbome Particulates and Radioivenes Samples from 6 Locations:
INDICATOR STATIONS AA1. River Bend Training Center; 1.7 km N.
Continuous air sampler with filter Charcoal cartndge:
collection weekly or as required by analysis weekly for AR1. River Bend Station North Access Road dust loading, whichever is more radiciodine.
across from plant entrance; O 8 km NNW.
frequent.
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P1 Nea River Bend Station Onsite Garden #1; beta AQS2, St. Francis Substation on U S. Hwy. (Bus )
61 in St. Francisville; 5 8 km NW (nearest Composite particulate filters:
community location),
analysis quarterly for gamma isotopic activity.
CONTROL AND SPECIAL INTEREST STATIONS' ALC. Parlange Power Center in Oscar; 20 km SW(Control).
AGS. GSU Service Center compound in Zachary; 17 km SE.8 Direct Radiation Measurements from 44 locations:
INDICATOR STATIONS 1
TA1. River Bend Training Center; 1.7 km N Thermoluminescence dosimeters Gamma exposure quarterly.
(TLDs); deployment / retreval quarterty.
TA2. WF 17 siren pole south of La. Hwy.10 and West Feliciana Pansh Road (WF) 2 in Elm Park; 8 km N.
TB1. River Bend Station cooling tower yard; 0.5 km NNE.
TB2. Stub pole at Jct. of La. Hwy. 965 and Audubon Lane (WF 17); 5 km NNE.
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1 RIVER BEND STATION RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT FOR 1996 TABLE 1 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM (Page 2 Of 6)
Exposure Pathway Sample Point Description.
Sampling s,nd Type and Frequency of and/or Sample Distance, and Direction Collection Frequency Analysis Direct Radiation TC1. Stub pole at Jct. of U S. Hwy. 61 and Old Thermoluminescence dosimeters Gamma exposure quarterly.
(continued)
Highway 61; 1.7 km NE.
(TLDs); deployment /retneval quarterty.
TC2. Stub pole along La. Hwy. 966,0.6 km south of Jct. of La. Hwys. 966 and 965; 7 km NE.
TD1 Stub pole along WF 7,150 meters south of Jct. of WF 7 and U S. Hwy. 61; 1.6 km ENE.
TD2. Stub pole along La. Hwy. 966,4 km south of Jct. of La Hwys. 966 and 965; 6.3 km ENE.
TE1 Stub pole along WF 7,1 km south of Jct. of WF 7 and U.S. Hwy. 61; 1.3 km E.
TE2. Gravel Power Center on La. Hwy. 68,2 km north of Jct. of La. Hwys. 60 and 964; 10 km E.
TF1. Stub pole along WF 7,1.6 km south of Jct.
of WP 7 and U.S. Hwy. 61; 1.3 km ESE.
TF2. On La. Hwy. 954,0 6 km north of Jct. of La.
954 and U S. Hwy. 61; 6 km ESE.
TG1. Stub pole along WF 7,2 km south of Jct. of WF 7 and U S. Hwy. 61; 1.6 km SE.
TG2. Telephone pole at gate to Marathon Tank Farm on U.S. Hwy. 61, near Delombre; 7.5 km SE.
TH1 Stub pole at Ilhnois Central Gulf Railroad crossing of WF 7 (near Grants Bayou); 1.7 km SSE.
TH2. First telephone pole on La. Hwy. 964 north of the entrance to Crown Vantage Paper Plant; 5.5 km SSE.
TJ1. Stub pole near River Bend Station gate #23 on La. Hwy. 965; 1.5 km S.
TJ2. Large tree along River Road,100 meters north of Crown Vantage Paper Plant intake structure; 5.8 km S.
TK1. GSU utility pole #L10178 on La. Hwy 965, 20 meters south of RBS Rwer Access Road; 0.9 km SSW.
l TK2. Stub pole at Jct. of La. Hwys. 414 and 415; 8 km SSW.
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RIVER BEND STATION RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT FOR 1996 TABLE 1 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM (Page 3 of 6)
Exposure Pathway Sample Point Description, Sampling and Type and Frequency of and/or Sample Distance, and Direction Collection Frequency Analysis Direct Radiation TL1. Second utildy pole on La. Hwy. 965 south of Thermoluminescence dosimeters Gamma exposure quarterly.
(continued) former liknois Central Gulf Railroad crossing; 1.0 (TLDs); deployment / retrieval km SW.
quartetty.
TL2. Second utikty pole along La. Hwy. 415 east of Louisiana & Arkansas Railroad crossing (near Patin's Dike); 9 5 km SW.
TM1. First utility pole on La. Hwy. 965 north of former lihnois Central Gulf Railroad crossing; O 9 km WSW.
TM2. Utihty pole along La. Hwy. 981, about 3 km south of Jct. of La. Hwys. 981 and 10; 4.2 km WSW.
TN1. Utility pole along La. Hwy. 965, between RBS gates #13 and #14; 0.9 km W.
TN2. Utility pole with electrical meter near west bank ferry landing (La. Hwy.10); 6 km W.
TP1. Near RBS Onsite Garden #1; O 9 km WNW.
TP2. Stub pole about 1.5 km north of former ICG RR trestle on Tunica Street, westem outskirts of St. Francisville; 7.3 km WNW.
TQ1. GSU property sign along La. Hwy. 965 about i km north of RBS North Access Road; 1.4 km NW.
TQ2. GSU pole at Jct. of North Commerce and American Beauty Streets. St Franceville; 6.9 km NW.
TR1. RBS North Access Road across from plant entrance; O 8 km NNW TR2. Tree along north side of WF 2, past Jacock Road, about 1.8 km east of Jct. of WF 2 and U S.
Hwy. 61; 8 km NNW.
CONTROL AND SPECIAL INTEREST STATIONS' TAC. Telephone pole along U S. Hwy. 61 about 200 meters north of Hamilton Stat!on Water Tower, near Wakefield,18 km N.
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RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT FOR 1996 i
TABLE 1 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM (Page 4 of 6)
Exposure Pathway Sample Point Description, Sampling and Type and Frequency of and/or Sample Distance, and Direction Collection Frequency Analysis CONTROL AND SPECIAL INTEREST STATIONS' Direct Radiation TEC. Stub pole at Jct. of La. Hwy. 955 and Thermoluminescence dosimeters Gamma exposure quarterty.
(continued)
Midway Road,4 8 km north of Jct. of La Hwys. (TLDs); deploymentIretneval 955 and 964; 16 km E.2 quarterly.
TLC. Partange Power Center in Oscar; 20 km SW.
TCS. Utility pole at gate to East Louisiana State Hospitalin Jackson; 12 3 km NE.
TGS. GSU Service Center compound in Zachary; 17 km SE.
THS. Roof of GSU Office Building, North Boulevard, Beton Rouge; 40 km SSE.8 TKS. RBS River Access Road; 2 8 km SSW.2 TLS Uti!ity pole near False River Academy sign
)
at edge of New Roads; 9 9 km SW.
TQSt. Behind Pontecostal Church (opposite West Feliciana Hospital) near Jc' of U S. Hwy. 61 and Ferdinand Street; 4 km NW.
TQS2. St. Francis Substation on U S. Hwy.
(Business) 61 in St. Francisville; 5.8 km NW.
TQS3 Utility pole at Louisiana State Penitentiary dairy, near Angola; 35 km NW.
TRS. Stub pole at Jct. of WF 2 and U S Hwy 61, near Bains (West Feliciana High School); 9.2 km NNW.2 maammmama Waterbome*
SURFACE WATER $
SWU. Mississippi River about 4 km upstream Weekly grabs, composited over Monthly composite:
from the HBS liquid discharge, near La Hwy.10 monthly and quarterly penods.
gamma isotopic.
ferry crossing Quarterly composite; tntium analysis.
SWD. Mississippi River about 4 km downstream from the RBS liquid d:ccharga, near the Crown Vantage Paper Plant.
DL.
RBS liquid discharge line at the blowdown Flow-weighted hourly grabs, control structure along the R!ver Access Road.
composited monthly and quarter 1y.
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RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT FOR 1996 l
l TABLE 1 l
RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM (Page 5 of 6) i Exposure Pathway Sample Point Description, Sampling and Type and Frequency of and/or Sample Distance, and Direction Collection Frequency Analysis J
GROUNDWATER WD. Upland Terrace Aquifer well, downgredient Quarterly grab.
Gamma isotopic, and tritium from the plant, about 470 meters SW.
analyses quarterly.
WU.
Upland Terrace Aquifer well, upgradient from the plant, about 470 meters NNE (control).
SHORELINE SEDIMENT SEDD. East shore of the Mississippi River, about 4 Semiannual grab Gamma isotopic analysis km downstream from the plant, near the Crown semiannually, i
Vantage Corporation paper mill.
SEDU. East shore of the Mississippi River, about 4 km upstream from the plant, near the La. Hwy.10 ferry?
Ingestion FISH AND INVERTEBRATES FD One sample of each of three commercially Semiannually or seasonally, when Gamma isotopic analysis on and/or recreationally important species from the available.
edible portions semiannually downstreap area influenced by the RBS hquid or seasonally.
discharge.
FU One sample of each of three commercially and/or recreationally important species from the discharge (control).gnfluenced by the RBS liquid upstream area not PRODUCE' G1/G2. Two samples of each of three different Monthly dunng the growing season. Gamma isotopic and 1-131 types of leafy vegetables from onsite gardens near analyses monthly.
the site bounaary in areas of hphest calculated r
1k WNW and 1.1 g ground-level D/Q; GQC.
One sample of each of three different kinds of leafy vegetables from the Louisiana State Penitentiary at Angola; 35 km NW(control).
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RIVER BEND STATION RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT FOR 1996 l
TABLE 1 l
RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM (Page 6 of 6) l NOTES:
(1) For purposes of data summary, comparisons, and discussion, the sampling locations designated as "Special Interest" are treated as indicator stations if they are within 16 km of RBS and control stations if they are beyond 16 km.
(2) Sample / measurement location not required by RBS Technical Requirements Manual (not identified in ODCM).
(3) The upstream (control) sample is taken at a distance beyond influence of the plant discharge. The downstream (indicator) sample is taken in an area beyond but near the mixing zone.
(4) Drinking water sampling / analyses not required by RBS Technical Requirements Manual and ODCM. No drinking water pathway exists due to extreme distance to nearest intake.
(5) Preferred species are river shrimp (Macmbracium Ohione), blue catfish (lctalutus furcatus), and l
freshwater drum (Actodinotus grunniens); if these are unavailable, other edible species may be substituted.
l (6) No irrigation pathway exists due to the extreme distance of nearest domestic water intake ; leafy vegetables are sampled and analyzed because of limited availability of milk samples.
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1
RIVER BEND STATION RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT FOR 1996 6]r Particulates and Radiciodines Five program exceptions, with loss of sample / sample volume, occurred involving air particulate and radioiodine sampling. All were caused by power outages due to weather, equipment / electrical malfunctions, or malfunction / failure of sampling equipment. In spite of the power failures or equipment malfunctions, samples were collected and analyzed from all locations with adequate volumes to achieve all TRM required detection limits with the exception of station ALC (SW), a control location at the Parlange Sub-Station in the New Rcads area. Three air sampfer locations, AB1 (NNE),
AKS (SSW) and AHS (SSE), were discontinued at the end of 1995, due to reduction of non-required sampling rcquirements.
RBS is currently using methods for determining more precisely when, during the week-long sample period, power outages or equipment failures occur so that comparison with wind direction joint frequencies or windrose will document ths extent to which required sampling was achieved. Recorders are used at sampling locations to chart actual hours of power outages as they occur.
ALC (SW) control location was discontinued in April of 1996, when the sub-station in which the sampler was located and powered was decomissioned. The special-interest location at AGS (SE) was substituted since it had been considered a control location itself with years of data for comparison. AGS (SE) location meets the distance criteria and is also located in the closest populated area where it is also co located with a NRC/DEQ air sampler. Note "C" of the TRM Table 3.12.1-1 allows the placement of control location stations in sectors other than those meeting distance and wind direction criteria as long as they provide " valid" background data. Although AGS (SE) location does not meet the least prevalent wind direction criteria, it compares favorably in the wind direction frequencies (% of year) in USAR Table 2.3-32.
Only one air sample location (AP1-WNW) met the TRM requirement of location of three samples near site boundary, in different sectors, of the highest calculated annual average ground level D/Q. Two new air sampler locations, AQ1 (NW) and AN1 (W) have been established to meet the requirements of the TRM. These new air sampling locations agan operation in January of 1997. Current air sampling locations, AA1 (N) and AR1 (NNW), will continue in geration while baseline data for the two new locations is being collected so that a data comparison can later be performed.
Direct Radiation (TLD)
Data for the third quarter at locations TK2 (SSW) and TOS3 (NW) were lost when TLD badges were missing during quarterly collection. TK2 pole location was destroyed by heavy equipment traffic, and TOS3 badge was lost due to vandalism. The loss of TLD badges is a common occurrence when deploying TLD's in 44 locations over five parishes.
TK2, an outer ring indicator station, is being relocated in 1997. TOS3 is a control loca at the state prison dairy at Angola. TOS3 location is being discontinued in 1997 due to nonavailability of an indicator milk sample and to provide a more efficient deployment and collection schedule.
The Central TLD Processing Facility at ANO was found not to be on the RBS's Qualified Supplier List (OSL) for reading and annealing TLD badges. Corporate Policy PL-126 was issued to correct these findings with individual agreements to be prepared and signed between sites for the various functions involved.
A review of the results from the Central TLD Processing Facility located at ANO indicated elevated responses of element four, as compared to elements two and three, in numerous TLD baages. It was determined that the inappropriate generation of element correction factors (ECFs) accounted for most of the erratic TLD responses. An additional discrepancy was found in the calibration of the TLD readers at ANO which assumed that all TLDs processed would have been irra 1ated on a phantom used to simulate the human body, which is not the case with environmental TLDs. The calibration discrepancy was addressed and corrected ECFs were generated to read third and fourth quarter environmental TLDs. The first and second quarter TLD readings were calculated and updated on the average results of TLD badge elements two and three only. The results of all four quarters were further reviewed by RBS Dosimetry for
)
correctness.
12
RIVER BEND STATION RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT FOR 1996 l
The outer ring TLD locations had several stations in question concerning the TRM required distance from the site of 6 - 8 km. Most of the stations were origina!!y sighted considering accessibility for efficient deployment and collection, and centering the TLD station in the sector to achieve equal spacing in the outer ring. Several locations were found to be too near or too far, due to no accessible locations meeting the distance criteria of the TRM. These stations were sighted in sector locations that were physically available. TLD location changes made are delinated in the 1996 Regulatory Guide 1.21 Report as they affect the Off-Site Dose Calculation Manual (ODCM).
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RIVER BEND STATION RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT FOR 1996 4
TABLE 2 RESULTS OF LAND USE CENSUS 1
item #
Sector Direction Nearest Range Nearest Range Residence (km)
Milk (km)
~
Animal 1
A N
Jones 1.8 2
B NNE Dreher 1.6 3
C NE
'Bickham, J.
1.4 4
D ENE
- Goulette 1.4 5
E E
Bickham, S.
2.2
~
6 F
ESE Bickham, L.
3.4 7
G SE Mills 6.6 1
8 H
SSE Koffman 1.7 J
9 J
S Bliss 1.8 l
10 K
SSW Guillory 7.4 11 L
SW 3
12 M
WSW 13 N
W Lacost 6.1 i
14 P
WNW Hermann 3.4 15 O
NW Leet 1.4 16 R
NNW Young 1.7 Notes:
(1) Nearer resident at 1.4 km compared to 1.5 km in the 1995 census.
(2) Nearer resident at 1.4 km compared to 1.6 km in the 1995 census.
14
RIVER BEND STATION RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT FOR 1996 TABLE 3 ENVIRONMENTAL (CROSS-CHECK) PROGRAM PARTICIPATION RESULTS Sa p T pe Study Date Analysis
,'Known" Value Va ue N DEV" N
G E' ggr E0800-125 09/26/96 Beta 57.0 17.3 56.97
-0.01 0.230 E0884-125 12/12/96 '
Beta f
87.6117.3 89.07 O.25 0.071 Charcoal Cartridge E0640-125 3/12/96 1-131 66.0 i 11.4 63.03
-0.78 0.161 (pCi/ cartridge)
E0699-125 6/19/96 ]
l-131 84.01 14.5 81.17
-0.58 0.162 E0801-125 9/26/96 1-131 60.0 i 10 4 59.77
-0.07 0.305 E0885-125 12/12/96 l-131 79.71 13.8
) 82.37 )
~
0.58 0.141 gtg E0637-125 3/12/96 Beta 98.01 17.3 110.13 2.10 1.394 E0638-125 3/12/96 H-3 2982 1 621.1 2600.0
-1.85 0.212 E0639-125 3/12/96 Cr-51 322 1 27.9 295.67
-283 2 018 Mn-54 }
31.01 8.7 31.87
}
0.30 0.721 f
j,
-0 64 Co-58 48 0 i 8.7 46.17 0.295 Fe-59 l
83.01 8.7 86.97 l 1.37 2.871 Co40 }
76.018.7
} 78.47 )
0.85 0.343 Zn-65 }
97.0 i 16.8 94.43
[
-0.46 0 079 l-131 3601 10.4 34.53 l
-0.42 0.620
) I.19 Cs-134 58 0 i 8.7 51.67 2
0.272 Cs-137 64.01 8.7
) 60.27 l
-1.29 0.874 Ce-14. i 88.01 8.7 82.77
)
-1.81 0.721 f
Beta
[
j E0696-125 6/19/96 174 i 45.2 193.0 1.26 0.521 E0697-125 6/19/96 l H-3 l
4915 851.3 4521.33 l
-1.39 0.111
~
E0698-125 6/19/96 Cr-51
)
995 t 86.2 932.0 )
-2.19 0.427 Mn-54 }
530 1 45.9 528.33 [
-0.11 0.223 Co-58 f 164 i 14.2 156.33 l
-1.62 1.008 f _
1371 11.9 l
-2.02 Fe-59 129.0 1.207 Co-60 148 i 12.8 149.67 l 0.39 0.639 Zn-65 102 t 17.7 95 83
'l
-1.05 0.208 l-131 20.0 i 10.4
)
23.3
)
0.95 2.461 Cs-134 294 1 25.5
[ 263.67
)~-3.57' O 241 Cs-137 }
724 1 62.7 706.67 0 83 0.359
~
Ce-141 }
379 1 32.8 345.67
-3.05' O.779 1
E0769-125 6/19/96 Cr 51
}
995 1 86.2 h 938.0 [
-1.98 0.404 (duplicate)
Mn-54 530 1 45.9 543.67 0.89 0201 Co-58 164 1 14.2 161.67
-0.49 0.504 Fe-59 137 1 11.9 l 148.0 )
2.78 0.517
[
}
1.48 Co-60 148 1 12.8 154 33 0.718 Zn-65 {
}
102 i 17.7 103 33 013 0.290 1-131 l
2001 10.4 l 21.63 i 0.47 0.098 Cs-134 }'
294 1 25.5
} 262.0 b-3.77' O.522 Cs-137 724 i 62.7
) 729.33 }
0.26 0.082 Ce-141 }
379 i 32.8 l 361.33 }
-1.61 0.249 15
l RIVER BEND STATION RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT FOR 1996 l
TABLE 3 I
ENVIRONMENTAL (CROSS-CHECK) PROGRAM PARTICIPATION RESULTS Sa p T pe Study Date Analysis "Known" Value' Va ue N DEV N-GE' 6
[
Beta f 0.230 Water (pCi/ liter)
E0800-125 9/26/96 57.0 i 17.3 56.97
-0.01 E0798-125 9/26/96 Cr-51 646 i 55.9 641.33
-0.25 l
0.731 f
239120.7 l 251.67 f
- 0. 97 Mn-54 1.84 2
Co-58 174 1 15.1 l 175.67 0.33 0.611 Fe-59 50.01 8.7 I 47.43
-0.89 0.721 Co40 151 1 13.1 161.67 0.15 0.548 Zn-65 93.01 16.1 103.43 1.94 0.553 j
l-131 f
50.01 10.4 l 53.27 l
0.94 1.319 Cs-134 295 d 25.5 309.33 [
1.68 l
0.200 f
1.33
}
0.263 Cs-137 225 i 19.5 233.67
[ Ce-141 [
[ -0.46
}
0.251 423 1 36.6 417.33 E0802-125 9/26/96 Cr-51 646 i 55.9 644.67 j_ -0.07 0914 (duplicate)
Mn-54 239 i 20.7 251.67 l 1.84 0.148 Co-58 f 174 i 15.1 174 33 f
0.07 O.543 Fe-59
[
50.01 8.7
}_ 48.90 f
-0.38 0.213 I Co40 f f 157.67 151 1 13.1 1.53 O.313 Zn-65 f
93.01 16.1 101.30 1.55 0.769 l-131
[
50.01 104 43.67
-1.83 0.788 Cs-134 295 1 25.5 l 305.33 [ 1.21 O.200 f
225i 19.5 f 231.33 Cs-137 0.98 0.053 l,
0.391 Ce-141 {
{ 416.67 423 1 36.6
-0.52 E0882-125 12/' /96 Cr-51 209 i 36.2 187.33
-3.59' 1.272 f Mn-54 202 1 17.5 211.67 1.66 0.351 I
Co-58 f 119 1 10.3 113.33 f
-1.65 O.199 f
48.0 t 8.7 l 48.00 0.00 0 685 Fe-59 Co40 j 108 i 9.4 109 33 0.43
}
0.875 Zn45 f 91.01 15.8 87.5
-0.67
}
0.448 f
I-131 39.01 10.4
{ 36.07
-0.85 0 807 l Cs-134 172 1 14.9 l 170.67
-0.27 0.137 f Cs-137 191 1 16.5 l 189.33 f
-0.30 0.371 r
Ce-141 l 272 1 23.6 i 265 33 f
-0.85 0.608 l
[
f 205.67 f
-0.55 [
2.035
[
209 1 36.2 E0886-125 12/12/96 Cr 51 (duplicate)
Mn-54 202 i 17.5 217.67 [
2.69 j
0.468 Co-58 119 10.3 119.33 }
0.10 l
0.397 f
48.018.7 f 3 66' f
1.524 Fe-59 58 57 Co40 {
108 i 9 4 113.67 1.82 0.547 Zn-65 91.01 15.8 100.10 1.73 0.227
'l
)
-1.91 I
0.847 l-131 39.01 10.4 32.37 Cs 134 [
172 1 14.9
} 175.00 f 0.60
}
0.343 f Cs-137 f 191 1 16.5
} 194.33 f 0.60 }
0.618 f Ce-145 f 272 1 23.6
} 271.33 f -008
}
0.261 J
i 16
RIVER BEND STATION RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT FOR 1996 TABLE 3 ENVIRONMENTAL (CROSS-CHECK) PROGRAM PARTICIPATION RESULTS a
Sa p T pe-Study Date Analysis "Known" Value' Va ue N DE NR BE' ggg E0799-125 9/26/96 Cr-51 608 i 52.7 575.67
-1.84 350 Mn-54 l 22561 19.5 231.33 1 0.88 0.367 t
t Co-58 l 1631 141 161.67
-0.28 0.507 Fe-59 I" 46.01 8.7 f 41.00
-1.73 1.170 Co-60 142 1 12.3 148.33 1.54 1.664 Zn-65 88.0115.2 89.50 0.30 0.638 i
Cs-134 277t 24 266.67 f
-1.29 0.512 i
[ -2.60 Cs-137 430 1 37.2 397.67 0.467 Ce-141 [
398 i 34.5 l 396.33 l
-0.15 0.178
~
f 2.578 E0883-125 12/12/96 Cr-51 756 i 65.5 729.00
-1.24 Mn-54 728 i 63.0 751.33 1.11 l
0.097 i
Co-58 430 37.2 l 407.00 f
-1.85 0.549
] 176.00 [
0.40 Fe-59 [
174 1 15.1 2.512
[
389 1 33.7 i 390.67 0.15 0.334 Co-60 4
Zn-65 327 i 56.6 l 345.00 0.95 0.434 Cs-134 620 1 53.7 l _ 588.00
-1.79 0.076 Cs-137 873 1 75.6 f 830.00 f
-1.71 f
0.149 Ce-141 f 979 i 84.8 f 960.33 f
-0.66
}
0.338 NOTES.
(a) The "known" values are hated with a range reflecting control (3 sigma) hmits.
(b) The normalized deviation from the "known" value is computed from the deviation and the standard error of the mean; 12 000 is the waming hmit and 13.000 is the control hmit.
(c) The normalized range is computed from the mean range, the control hmit, and the standard error of the range. +2.000 is the waming hmit and +3 000 is the control hmit.
l (d) Statistical calculations performed using methods given in EPA 400/4 80-044.
(e) The results reported were out of the control hmits; refer to the discussion on program exceptions.
l 17
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RIVER BEND STATION j
RADIOLOGiOAL ENVIRONMENTAL OPERATING REPORT FOR 1996 i
FIGURE 3 i
i j
Analytics Environmental Cross Check Program j
Results per Normalized Deviation Control Limits 1996 i
1 4
5%
]
8%
i i
E1<
j E1>2 j
D2>3
(
53>
53%
34%
i l
4 1
EPA intertabatory Companson Program Results per Normalized Deviation Control Umtts 1990-1595 l
1 l
5%
9%
t n
E1<
E1>2 D2>3 i
53>
3%
61 %
l i
1 i
l 1
l l
1 j
18
)
~ - -
RIVER BEND STATION RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT FOR 1996 4
TABLE 4 1
MONITORING PROGRAM EXCEPTIONS
{
i SAMPLE TYPE PERIOD LOCATION EXCEPTION / REASON A Pa ate &
2/21 - 2/26/96 ALC Loss of 20.5 hours5.787037e-5 days <br />0.00139 hours <br />8.267196e-6 weeks <br />1.9025e-6 months <br /> /17% volume for the period due to failure / malfunction of l
R, motor / pump, 4/3-4/10/96 ALC Loss of 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> for the period due to lack of power to sampler.
4/10-4/16/96 ALC Loss of 100% volume for period due to lack of power to auxiliary equipment in sub-station. Shut-down of sub-station in progress, leaving controllocation sampler inactive. AGS location becomes the controllocation.
6/10-6/17/96 AA1 AR1,AP1 Loss of 1.3 hours3.472222e-5 days <br />8.333333e-4 hours <br />4.960317e-6 weeks <br />1.1415e-6 months <br /> /1% volume due to power outage.
10/14 10/21/9 AQS2 Loss of 50% of volume for the period due to malfunction of motor / pump.
TLD's 3rd Quarter TK2 Loss of data for the quarter due to TLD badge lost when location pole was run over by heavy equipment traffic.
3rd Quarter TOS3 Loss of data for the quarter when the TLD badge was lost due to vandalism.
1st & 2nd Alllocations Review of data indicated elevated reponses in element 4 in a majority of the Quarter TLD badges.
1996 Alllocations The Central TLD Processing Facility at ANO was not on RBS's OSL for reading and annealing TLD badges.
I Vegetation 1/96 - 5/96 G1 & G2 Less than three broadleaf vegetation samples per month collected due to inclement weather /hard freezes experienced.
Cross Checks 2nd Quarter Gamma-in-Water sample Cs-134 analysis result out of N4eviation control limits for E0698-125 and E0698-125 and duplicate E0769-125 due to coincidence-summing.
6/19/96 sample E0769-125 2nd Quarter Gamma-in-Water sample Ce-141 result out of N-deviation controllimits for E0698-125 due to E0698-125 nondertermined reason.
6/19/96 4th Quarter Gamma-in-Water sample Cr-51 average result out of N-deviation controllimit for E0882-125 due to E0882-125 presence of outlier in results composing the average.
4th Quarter Gamma-in-Water duplicate Fe-59 results out of N-deviation controllimits for duplicate sample E0886-125 sample E0886-125 due to presence of outlier in results composing the average.
Air, TLD's, Since pre-All locations During QA 96-061-ENV/RE sudit several sampling locations were Vegetation operational identified as not meeting requnements of the RBS TRM.
monitoring 19
RIVER BEND STATION RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT FOR 1996 Vegetation SamplRE Due to the inclement weather and hard freezes experienced during December of 1995 and into the first three months of 1996, the vegetation sample collections were inadequate from the onsite indicator gardens. The TRM Table 3.12.1-1 f
indicates sampling and collection frequency as " Monthly during the growing season". A new garden contract was awarded in January of 1996 to a more reliable contractor, whose sole responsibility will include maintaining the onsite gardens.
The locations of the two on-site gardens (sector-Q,NW and sector-P,WNW) were identified as not meeting the TRM requirement of location in the highest D/O sector. They are located in two of the three highest predicted annual average ground level D/O sectors, but not in the highest sector, N (W). A new garden location is presently being i
established in sector N (W), and sample collections will begin in 1997 as vegetation is available, during the growing s:ason. All three gardens will remain in cultivation for some period of time so baseline data can be established in the new location. After sufficient data has been collected, a data comparison can be performed and evaluated due to the incorrect siting.
TRM Table 3.12.1-1 (4.c.) also requires three similar broad leaf vegetation samples grown 15-30 km distance near the least prevalent wind direction, if milk sampling is not performed. The RBS REMP has used the state farm at Angola, sector O (NW), since pre-operation (1983), as a control location for vegetation sampling. Although not located in the least prevalent wind direction, the farm is 32 km. in distance, and it is the only permanent source of vrgetation that has been found at the required distance. As discussed in the location of the air sample control location, the TRM allows the placement of control locations in sectors other than those meeting the wind direction criteria as long as valid background data is obtained. The historical data obtained from control samples from Angola since 1983 is considered valid data and essential to the radiclogical environmental program at RBS.
i Environmental Cross-Check Results Cs-134 result in 6/19/96 gamma-in-water sample E0698-125 and duplicate sample E0769-125 were outside the control limits as defined in note "b" of Table 3. Review of the previous data indicated a low bias for Cs-134 existed due to cascade (coincidence) summing effects. A summing correction factor was calculated and applied to the Cs-134 yields in the software nuclide library for water. Re-analysis of the spectrum data with corrected yields produced results within acceptable limits. Cs-134 results for 9/26/96 and 12/12/96 gamma-in-water samples were all within the warning limits.
The Ce-141 result for the 6/19/96 gamma-in-water sample E0698-125 was slightly outside (-3.05) the control limit.
Review of the three analysis results did not indicate an outlier. The Ce-141 result of the duplicate 6/19/96 gamma-1 in-water sample E0769-125 was within control limits. No reason was determined for the out-of-control limit result of Co-141 in the second quarter study. Results for Ce-141 in all other gamma-in-water studies for 1996 were within i
I the warning limits. No corrective actions were taken due to the single out of control limit result for Ce-141 in the second quarter study.
The Cr-51 result for the 12/12/96 gamma-in-weer sample E0882-125 was outside (-3.59) the control limit. Review of the three results used for the average indicated an outlier result caused the low average. The percent coefficients of variance calculation will be csed in the future as a criteria to determine the presence of an outlier.
Outlier results will be discarded, using jus' *wo results, or the sample will be analyzed a fourth time, if possible.
The Fe-53 result for the 12/12/96 gammaJn-water sample E0886-125 was outside (+3.66) the control limit. Review of the three results used for the averagi indicated an wilier result caused the high average. The percent coefficients of variation calculation will be used in the future as a criteria to determine the presence of an outlier.
Outlier results will be discarded, using just tivo results, or the sample will be analyzed a fourth time, if possible.
20
- -=-
RIVER ' BEND STATION RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT FOR 1996 l
There is no impact on past data indicated by these cross-check program exceptions. Environmental samples are analyzed and reported with a 95% confidence level that the analytical result with its associated error encompasses the "true" value. As seen in Figure 3 (page 18) for 1996, and past years, 95% of the RBS environmental cross-check results are within controllimits.
3.0 INTERPRETATION OF REMP RESULTS 3.1 Summarv of Ooerational REMP Results l
Monitoring results for the exposure pathways are itemized in Appendix A and summarized in Table 5, from which measured activities of the naturally-occurring daughters of uranium and thorium are excluded. For purposes of data summary, comparison, and discussion, the sampling locations designated "Special Interest" in Table 1 are treated as indicator stations if they are within 16 km of RBS and control stations if they are beyond 16 km.
3.1.1 Airborne Exoosure Pathway - Measurements of radiciodine and other gamma-emitters were all below their respective LLDs - that is, " undetectable" at the required analytical sensitivities. Gross beta activities averaged 0.027pCi/m' at indicator locations and 0.026 pCi/m* at control locations. A Cs-137 peak was quantified on a location AA1 (N) charcoal cartridge collected for the period ending 6/3/96. The activity was below LLD level for air particulates, and was not measured at any other location during the year.
3.1.2 Direct Exoosure Pathway - Quarterly exposures averaged 14.58 mR total at indicator locations and 15.05 mR total at control locations normalized over a ninety day period. Exposures measured in 1996 were slightly higher than previous years and can be attributed to the processing of TLD badges at ANO. Little difference is noticed l
between exposure averages of indicator and control locations.
3.1.3 Waterborne Exoosure Pathway - No gamma-emitters were measured in surface waters (up and down stream) or groundwater ( up and down gradient) during 1996. A Cs-137 peak was quantified at 55.1 pCi/kg in an up-stream river sediment. The gamma emitters Mn-54, Co-58, Fe-59, Co-60, Nb-95, Zn-65, Cs-137, and Cr-51 were measured in some monthly composite samples from the CWS discharge line at concentrations between 4.41 and 283 pCi/l. Tritium (H-3) activities averaged 1699 pCi/l in the discharge line and were below detection limits at all other locations. The reduction of liquid radwaste discharges during the first quarter of 1996 decreased the amount of low-level activity usually measured in the discharge line monthly composites. Naturally-occurring gamma-emitters, such as K-40, were measured in Mississippi River shoreline up-stream and down-stream sediments.
3.1.4 Ingestion Exoosure Pathway - TRM required nuclides were all below the required LLD in the ingestion pathway monitoring media consisting of vegetation and fish during 1996. On!y naturally-occurring gamma-emitters, such as K-40 and Be-7, were measured in fish and vegetation samples.
l f
21 l
1
RIVER BEND STATION RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT FOR 1996 i
TABLE 5 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM
SUMMARY
(Page 1 of 3)
River Bend Station Docket Number: 50-458 West FeliCiana Parish, Louisiana Reporting Period 1/1/96 to 12/31/96 l
Medium or Type and Total Lower AllIndicator Location with Highest Control Number at Pathway Number of Limit of Statipns Mean Annual Mean Locationy Nonroutine Sampled (Unit of Analyses Detection' (f) Range Mean (f)
Reported i
Measure)
Performed (LLD)
Range Results Name Mean (f)*
Distance / Direction Range Air Particy) late Gross Beta 0 01 0 027 (208/208)
AA1 0 028 0 026 (66/66) 0 (pCi/m (274) 0 012 0 101 1.7 Km N (52/52) 0 013 0 083 0.012 -
0 101
+
8 K-40 None 0.464 (208/208)
AR1 0 485 0 443(66/66) 0 (274)
Required 0.177 0 916 0.8 Km NNW (52/52) 0.189 0.716 0.177 4
0.736 I
Cs-134 0.05 All < LLD All < LLD 0
(21) j 4
4 Cs-137 0 06 All < LLD All < LLD 0
(21)
J Air Radio ine I-131 0.07 All < LLD All < LLD 0
(pClim (274)
Direct (TLD)*
Gamma 14 58(151/151)
THS 17.98 (4/4) 15 05(23/23)
O O
10 48 18 72 40 km SSE 17 /1 -
12.09 18.20
{
tM hrterly Surface Water H-3 3000 926(6/8)
DL All < LLD 0
(pCilllter)
(12) 144 -2097 99 4 Mn-54 15 139 (3/24)
DL 139(3/12)
All < LLD 0
(36) 10.7 -305 10.7 - 305 4
Co-58 15 49.1(2/24)
DL 49 1 (2/12)
All < LLD 0
(36) 26.5-71 6 26 5 -71.6 Fe 59 30 96 4 (2/24)
DL 96 4 (2/12)
All < LLD 0
(36) 28 7-164 28.7-164 I
s 1-76.7 (6/12) l Co 60 15 76 7(6/24)
DL All < LLD 0
(36) 4 41-283 4 41-283 4
4-4 Zn-65 30 0 06(1/24)
DL 9 06(1/12)
All < LLD 0
(36) single value single value 7
9 Nb-95 i
15 11.5 (1/24)
DL 11.5 (1/12)
All < LLD '
0 (36)
{
single value single value 4
4-4 Zr 95 30 All < LLD All < LLD 0
(36) 1-131 15 All < LLD All < LLD 0
(36)
]
Cs-134 15 All < LLD All < LLD 0
(36) 4 4
4 Cs-137 18 4 53(1/24)
DL 4 53(1/12)
All < LLD 0
(36) single value single value 1
An <
0 All < LLD L10 15 All < LLD 0
Cr-51 None 237 (1/24)
DL 237(1/12)
All < LLD 0
(36)
Required single value single value 22
RIVER BEND STATION RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT FOR 1996 1
k TABLE 5 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM
SUMMARY
(Page 2 of 3)
River Bend Station Docket Number: 50-458 West Feliciana Parish, Louisiana Reporting Period 1/1/96 to 12/31/96 Medium or Type and Total Lower Limit All Indicator Location with Highest Control Numbe Pathway Number of of Statipns Mean Annual Mean Locationy Mean Nonrou Sampled (Unit of Analyses Detection, (f) Range (f)
Report 5
Measure)
Performed (LLD)
Range Resui Name Mean (f)8 Distance / Direction Range Groundwater H-3 3000 All < LLD ALL < LLD 0
(pCi/ liter)
(8) e t-7
+
+-
Mn-54 15 l
(8) l l
Co-58 15 All < LLD All < LLD 0
(8) f t
t-Fe-59 30 All < LLD 1
All < LLD 0
(B)
+
Co-60 15 All < LLD All < LLD 0
(8) 7 Zn45 30 All < LLD All < LLD 0
(8) l l
l Nb-95 15 All < LLD All < LLD 0
(*)
i f
Zr-95 30 All < LLD All < LLD 0
(8) 1
+
l-131 15 l
0 (8) l
}
Cs 134 15 AA < LLD All < LLD 0
(8)
Cs137 18 All < LLD All < LLD 0
Ba-140 60 l
(8) l 4-4
+.
+
-4 La-140 15 Ali c LLD Ali c LLD 0
(8) sediment
- K-40' None 12630(2/2) 13710(2/2) 13710(2/2 0
(pCAg dry)
(4)
Hequired 12150-13110 4 km upstream 13000-14420 13000-14420
+
+
+.
Cs-134 150 All < LLO All < LLD 0
(4) l gy Cs 137 180 Ali c LLD 55.1(1/2) 55'.it/2) 0 sinole value single value Fish!!nvertebrate K-40' None 2554 (6/6) 3245(4/6) 3245(4/6) 0 (pCAg wet)
(12)
Required 666 3384 4 km upstream 2683-3898 2683-3898 i
.I j
e
+
+
Mn-54 130 All < LLD All < LLD 0
1 I
(12) t Co-58 l
(12) i Fe-59 260 AII < LLD l
l All < LLD 0
02) l 1
j Co-60 130 All < LLD All < LLD 3
(12) 23
RIVER BEND STATION RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT FOR 1996 l
TABLE 5 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM
SUMMARY
(Page 3 of 3)
I
- River Bend Station Docket Number 50-458 West Feliciana Parish, Louisiana Reporting Period 1/1/96 to 12/31/96 Medium or Type and Total Lower Allindicator Location with Highest Control Number of Pathway Number of Limit of Statipns Mean Annual Mean Locationp Nonroutine Sampled (Unit of Anaiyses De'ection' (f) Range Mean (f)
Reported Measure)
Performed (LLD)
Range Results Mean (f)'
l l
Distance / Direction Range Fishinvertebrate Zn-65 260 All < LLD l All < LLD 0
(pCa/kg wet)
(12) l Cs-134 130 All < LLD I
All < LLD 0
(12) f l
Cs-137 160 All < LLD All < LLD 0
(
(12) l Broadlea' Be-7' None 789 (16/56)
G1 878 (9/29) 522 (10/35)
N/A Vegetation (91)
Requned 195-2302 1 km WNW 321 2302 211 915 (pCi/kg wet)
K-40' None 3892 (56/56) goc 4191 (35/35) 4191 (35/35)
N/A (91)
Requwed 1635-6433 35 km NW 1553 -11160 1553-i 11160
- 3. -
y 4
.e.
1-131 l
60 All < LLD l
All < LLD 0
(91) l l
s.
y
+
Cs 134 60 Ali c LLD i
All < LLD 0
(91)
All < LLD 0
(91)
NOTES:
(1) Lower Limit of Detection (LLD) as defined in RBS Technical Requirements Manual (Table 3.12.1-3).
(2) Mean and range based on detectable measurements only. The fraction of detectable measurements at specified locations is indicated in parentheses (f).
(3) Specific activities found for certain common and readily distinguished, naturally-occurring nuclides are included j
to provide perspective. It should also be noted that other gamma-emitting, naturally-occurring nuclides (e.g.,
primordial series) are often detected but not reported because of the complexities and uncertainties of specific j
identification.
j (4) Quarterly gamma exposure estimates are " normalized" to a 90-day quarter.
(5) An upstream sediment sampling location, though not required, is used as a " control" for shoreline sediment comparisons.
l l
l 24 i
RIVER BEND STATION RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT FOR 1996 i
I 3.2Comoarison of Ooerational and Baseline REMP Results Radioiodine and other gamma-emitters in the airbome exposure pathway were not measured at levels above the required LLDs during 1996. Gross beta activities on air particulate filters averaged 0.027 pCi/m at indicator and 0.026 pCi/m' at control locations in 1996, compared to 0.03 pCi/m' at both indicator and control locations during the preoperational phase of the REMP (Appendix B).
In the direct exposure pathway, the 1996 net average normalized readings for quarterly TLDs from both indicator and l
control locaiions were slightly lower than the corresponding values for the baseline period. Thus far. no appreciable differences have been observed in TLD exposures between indicator and control locations or between the same locations from one year to the next.
In the waterborne exposure pathway, activities for required gamma-emitting nuclides were measured at levels below the RBS Technical Requirements Manual LLDs during 1996 as had been the case during the preoperational phase l
(Appendix B), except in the CWS discharge line. The low-level activity usually measured in the discharge line monthly composites has decreased in 1996 due to the reduction in frequency of liquid radwaste discharges. As in preoperational period, required gamma-emitting nuclides in shoreline sediments were all below LLDs; although a Cs-137 peak, 55.1 pCi/kg (below detection limit), was measured in a up-steam sediment. Naturally-occurring K-40 averaged 12,630 pCi/kg in indicator and 13,710 pCi/kg in control samples in 1996; approximately the same as measured during preoperational period. Tritium levels in water are compared below:
WATERBORNE AVERAGE TRITIUM (pCi/l)
LQGat!Qn Eft-09ttatl20Al 1D1 M
iSH 12M M
1H i
surface Water, Upstream (4 km)
<3000
<371
<355
<362
<324
<249
<26 RBS Disch:rge Line N/A 7047 5744 4962 10236 3873 169 Surface Water, Downstream (4 km)
<3000
<374
<364
<362 158 235 15 Upgradient Groundwater
<3000
<366
<352
<372 336
<244
<26 Downgradient Groundwater s3000
<363
<348
<373 173
<251
<26 Tritium activities in the discharge line have decreased on an average since 1990, reflecting the releases noted in the comparison of tritium activities measured in the liquid discharge line (Figure 4, page 28). These tritium levels reflect a decrease from 1990 due to removal of fa# 'Jel, but represent an increase compared to years prior to 1990, due to more efficient radioactive wastewater tre ament and reuse (e.g., boiler makeup). In the RBS boile:-reactor, tritium is produced by ternary fission of the reactor fuel (23s ), although only a small fraction of that tritium would diffuse U
through the fuel's cladding. Tritium is also produced by neutron reactions with certain isotopes of boron, deuterium and lithium when present in the boiler (e.g. as control rod material - boronp ]The partic removed in this treatment leaving the tritium behind as water (e.g., ['H-O-H ). When this water is reused as boiler l
makeup, the tritium concentration in the water increases. During the first quarter of 1996 the number of liquid radwaste discharges were decreased significantly, due to the TOC removal in the post process sample, allowing recycle of liquid radwaste to the condensate storage tank for reuse. This reduction in radwaste discharges has decreased the amount of tritium and gamma-emitting nuclides measured in discharge line monthly composites.
In the ingestion exposure pathway, no gamma-emitting nuclides were measured above LLDs during 1996. There appears to have been no increase in radionuclide concentrations attributable to RBS operation in food / forage media i
over baseline levels (Appendix B). Naturally-occurring K-40 was measured at an average of 3892 pCi/kg in indicator vegetation and at an average of 4191 pCi/kg in control vegetation in 1996, roughly the same levels encountered prior i
to RBS operation (Appendix B). Another natural nuclide, Be-7, averaged 789 and 522 pCi/kg in indicator and control vegetation samples, respectively, during 1996. Although presumably present, Be-7 was not quantified during the l
preoperational phase for comparison.
25
RIVER BEND STATION RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT FOR 1996 3.3 Comoarison of REMP Results with Ooerotina Controls i
The only measurable concentrations of radionuclides, or levels of radiation above normal environmental background, attributable to plant operation, in the vicinity of RBS during 1996 appear to have been the expected low levels in the liquid discharge line. The indicator vs. control comparisons for airborne gross beta activity (Section 3.1.1; Table 5 1
and Appendix A) corroborate the reports of limited or no releases of particulates or radioiodine in 1996. The 1996 TLD data (Section 3.1.2; Table 5 and Appendix A) showed no appreciable differences in direct radiation exposures between indicator and control locations. Excerpted liquid effluent data from the Annual Radioactive Effluent Release Report (1.21) are listed in Table 6 along with the corresponding Discharge Line analytical data for those nuclides which were measured by the REMP during 1996. Comparisons for 1996 are not as favorable as past years due to j
the reduction in frequency of radwaste discharges. These nuclide activities were well below the NRC reporting levels, but are listed here for comparison to substantiate the adequacy of source control and effluent monitoring at River Bend Station. A graphical comparison of the 1.21 report data and the REMP results for tritium activities over i
4 j
the past years is illustrated in Figure 4, page 28.
i j
1 l
l 3
4 1
i l
l 26
RIVER BEND STATION RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT FOR 1996 l
TABLE 6 i
SUMMARY
COMPARISON OF LIQUID EFFLUENT QUANTITIES / ACTIVITIES AND REMP DISCHARGE LINE MONITORING RESULTS Quantities Released 1st Quarter 2nd Quarter 3rd Quarter 4th Quarter Totals Liters of Effluent 4.79E+06 4.42E+05 1.91 E+06 8.07E+05 7.95E+06 Liters of Dilution 1.02E+09 1.26E+09 1.35E+09 1.44E+09 5.08E+09 Curies of H-3 1.92E+00 4.22E-01 2.02E+00 1.09E+00 5.45E+00 f
Curies of Cr-51 4.28E-02 4.74E-04 3.06E-03 3.65E-03 5.00E-02 i
Curies of Mn-54 7.29E-02 3.74E-04 3.32E-03 4.68E-03 8.13E-02 Curies of Co-58 2.21 E-02 6.51 E-05 1.02E-03 8.05E-04 2.40E-02 Curies of Fe-59 3.15E-02 4.91 E-05 9.91 E-04 6.72E-04 3.32E-02 Curies of Co-60 9.11 E-02 6.28E-04 4.77E-03 8.18E-03 1.05E-01 Curies of Cs-137 5.79E-05 0.00E+00 7.61E-06 3.01E-05 9.56E-05 Curies of Zn-65 4.39E-03 1.88E-05 2.39E-04 4.26E-04 5.07E-03 Curies of Nb-95 2.03E-03 0.00E+00 5.69E-05 4.09E-05 2.13E-03 Predicted (Extrapolated) Specific Activities (pCill) versus 1996 REMP Measured Nuclide 1st Qtr 2nd Qtr 3rd Qtr 4th Qtr Mean REMP H-3 1875.00 334.39 1496.30 755.89 1115 1699 Cr-51 41.80 0.38 2.27 2.53 11.74 237 Mn-54 71.19 0.30 2.46 3.25 19.30 139 1
Co-58 21.58 0.05 0.76 0.56 5.74 49.1 Fe-59 30.76 0.04 0.73 0.47 8.00 96.4 Co-60 88.96 0.50 3.53 5.67 24.67 76.7 Cs-137 0.06 0.00 0.01 0.02 0.02 4.53 Zn-65 4.29 0.01 0.18 0.30 1.19 9.06 Nb-95 1.98 0.00 0.04 0.03 0.51 11.5 l
1 27
RIVER BEND STATION RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT COR 1996
. FIGURE 4 Liquid Discharge H-3 Activities (1.21 Report) Versus REMP Results 25000 I
20000 T
15000 i
5
-+- 1.21
-+-REMP 10000 5000 O
1987 1988 1989 1990 1991 1992 1S93 1994 1995 1996 Years 28
._~
,. -,,. ~.,,,,..,,,.,
c,,.-
r.-_.-
,e
, ~
i
RIVER BEND STATION RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT FOR 1996 APPENDIX A Listings of 1996 REMP Results The following tables list individual analytical results and direct measurements of radiation (TLD exposures) recorded by the Radiological Environmental Monitoring Program (REMP) during 1996. Concentrations measured for certain l
common and readily-distinguished, naturally-occurring nuclides are included to provide perspective. It should be noted that other gamma-emitting, naturally-occurring nuclides (e.g., primordial series) were often detected but are not listed l
because of the complexities and uncertainties of specific identifications. Tables listing analytical results for non-TRM required samples for 1996 are also included.
l I
I l
l 29
i RIVER BEND STATION RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT FOR 1996 1
Tritium Activities (pCl/ liter)in Water (LLD = 3000 pCl/L)
INDICATORS CONTROLS PERIOD SWD DL WD SWU WU 1:t Quarter 144 2097.
< 167
< 166
< 168 2nd Quader
< 251
< 251
< 252
< 252
<253 3rd Quarter 161 2045
< 263
< 263
< 263 4th Quarter 150 956
< 257
< 256
< 257 MAX 161 2097
< LLD
< LLD
< LLD AVG 152 1699 MIN 144 956 Surface Water: Indicator Control MAX 2097
< LLD AVG 926
< LLD MIN 144
< LLD i
30
~.
...... ~ _ - --
RIVER BEND STATION RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT FOR 1996
?
Gamma-Emitting Nuclide Activity (pCl/ liter)in Water CESIUM 134 (LLD = 15 pCill)
INDICATORS CONTROLS PERIOD SWD DL WD SWU WU JAN
< 3.10
< 4.42
< 2.45 FEB
< 4.29
< 6.40
< 7.34
< 5.51
< 7.79 MAR
< 3.97
< 3.73
< 3.34 APR
< 6.35
< 7.60
< 4.70 MAY
< 5.11
< 3.84
< 7.47
< 4.68
< 12.60 JUN-
< 4.05
< 3.48
< 4.48 JUL
< 3.32
< 4.49
< 3.42 AUG
< 3.79
< 5.20
< 5.88
< 4.51
< 5.69 SEP
< 4.66
< 4.98
< 4.62 OCT
< 3.84
< 3.53
< 2.82 l
< 4.44
< 5.03
< 6.08
< 5.33
< 6.20 DEC
< 3.62
< 5 43
< 4.58 l
MAX
< LLD
< LLD
< LLD
<LLD
< LLD AVG MIN CESIUM 137 (LLD = 18 pCL/l)
INDICATORS CONTROLS PERIOD SWD DL WD SWU WU l
JAN
< 3.87 4.53
< 2.71 FEB
< 3.67
< 6.82
< 9.71
< 7.13
< 7.81 MAR
< 3.63
< 3.73
< 3.45 APR
< 8.03
< 8.68
< 4 87 MAY
< 4.83
< 4.55
< 9.42
< 5.78
< 14 60 JUN
< 4.21
< 4.07
< 5.37 JUL
< 4.02
< 4.65
< 5.15 AUG
< 5.90
< 574
< 7.30
< 7.35
< 12 40 SEP
< 6.85
< 5.97
< 4.63 OCT
< 3.53
< 4.09
< 3.80 NOV
< 4.26
< 4.14
< 4.74
< 5.00
< 7.54 DEC
< 4.66
< 5.74
< 3.82 l
I
{
MAX
<LLD 4.53
< LLD
< LLD
< LLD AVG 4.53 MIN 4.53 i
31 1
RIVER BEND STATION RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT FOR 1996 Gamma-Emitting Nucilde Activity (pCl/ liter)in Water l
INDICATORS CONTROLS j
PERIOD SWD DL WD SWU Wu JAN
< 14.8
< 14.9 14.8 FEB
< 14.2
< 14.5
< 11.8
< 14.9
< 7.39 MAR
< 14.9
< 14.8
< 14 9 APR
< 14.6
< 14.8
< 14.7
-MAY
< 14.8
< 11.3
< 9.07
< 14.5
< 12.5 JUN
< 14.9
< 14.9
< 14.7 JUL
< 14.6
< 14.9
< 14.4 AUG
< 12.8
< 14.8
< 6.57
< 14.6
< 8.28 SEP
< 11.5
< 14.9
< 13.4 OCT
< 14.1
< 13 8
< 13.3 NOV
< 11.3
< 14 9
< 5.66
< 12.9
< 6.74 DEC
< 13.0
< 12.0
< 14.0 MAX
< LLD
< LLD
< LLD
< LLD
< LLD AVG t
MIN 1
INDICATORS CONTROLS PERIOD SWD DL WD SWU WU
)
i JAN
< 29.1
< 33.3
< 25.8 FEB
< 29.2
< 39.4
< 31.4
< 37.0
< 27.4 MAR
< 32.6
< 32.6
< 28.4 APR
< 42.8
< 47.1
< 34.1 MAY
< 33.4
< 29.9
< 33 8
< 33.8
< 30.8 JUN
< 35.3
< 28.8
< 30.0 JUL
< 33.7
< 34.2
< 31.1 AUG
< 22.2
< 34.6
< 21.1
< 28.1
< 29.9 SEP
< 33.6
< 32.8
< 32.3 OCT
< 31.1
< 29.2
< 35.2 NOV
< 29 4
< 35.9
< 21.8
< 29.9
< 23.7 DEC
< 32.6
< 37.3
< 23.2 MAX
<LLD
<LLD
<LLD
<LLD
<LLD AVG MIN 32
RIVER BEND STATION
=
RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT FOR 1996 l
1 l
Gamma-Emitting Nuclide Activity (pCl/ liter)in Water l
LANTHANUM.140 (LLD=15 pCi/L)
INDICATORS CONTROLS PERIOD SWD DL WD SWU WU JAN
< 8.68
< 8.52
< 8.76 FEB
< 12.5
< 13.0
< 12.7
< 11.8
< 13.0 MAR
< 11.5
< 10.7
< 10.3 APR
< 10.4
< 13 6
< 9.58 MAY
< 11.7
< 10.8
< 13.5
< 13.1
< 14.6 JUN
< 9.44
< 10.5
< 10.6 JUL
< 10.3
< 12.7
< 11.9 AUG
< 11.5
< 12.9
< 9.55
< 6.48
< 12.9 SEP
< 13.1
< 7.76
< 11.4 OCT
< 11.4
< 10.8
< 9.46 NOV
< 7.15
< 9.09
< 8.30
< 13.4
< 9.93 DEC
< 6.88
< 13.5
< 12.8 MAX
<LLD
<LLD
< LLD
<LLD
< LLD l
AVG MIN MANGANESE. 54 ( LLD=15 pCi/L)
INDICATORS CONTROLS PERIOD SWD DL WD MU WU JAN
< 3 62 305
< 2.75 1
FEB
< 4.76 102
< 14.1
< 5.85
< 7.07 MAR
< 4 40
< 4.60
< 3.50 APR
< 5.85
< 7.60
< 5.23 MAY
< 5.23
< 4.53
< 9.87
< 5.08
< 12.3 JUN
< 5.27
< 4 45
< 4.43 JUL
< 3.50
< 5.54
< 3.89 AUG
< 4.46
< 8.21
< 6.17
< 4.10
< 6.77 SEP
< 4 69
< 7.39
< 7.30 OCT
< 4.28 10.7
< 4.08 NOV
< 4 61
< 5.18
< 5.74
< 4.48
< 5.95 DEC
< 5 69
< 5.99
< 3.09 MAX
< LLD 305
< LLD LLD
< LLD AVG 139 MIN 10.7 33
~.
RIVER BEND STATION RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT FOR 1996 Gamma-Emitting Nuclide Activity (pCl/ liter)in Water IRON 59 (LLD = 30 pC1/L)
INDICATORS CONTROLS PERIOD SWD DL
.WD SWU WU JAN 8.55 164.00 6.21 1
1 FEB 9.68 28.70 < 21.20
< 12.10 < 16.40 MAR 8.85 < 10.10 9.46 APR 17.50 < 18.70
< 12.10 MAY 11.20 < 10.10 < 17.00
< 10.80 < 20.70
)
JUN.
7.96 <
8.25
< 11.60
]
JUL 8.37 < 10,80
< 11.50 1
AUG 10.40 < 15.20 < 13.10
< 14.80 < 13.20 SEP~
4.40 < 10.50 6.60 OCT 9.49 < 10.30 8.82 NOV 5.80 < 13.50 < 11.90
< 11.30 < 15.00 DEC 9.02 < 12.50 9.21 MAX LLD 164.00 <
LLD LLD <
LLD AVG 96.35 MIN 28.70 l
INDICATORS CONTROLS PERIOD SWD DL WD SWU WU JAN 3.47 71.60 2.94 FEB 4.45 26.50 <
7.52 5 44 <
7.90 MAR 4.64 4,09 3.46 APR 7.77 <
9.06 4.56 MAY 4.53 <
4.32 <
9.27.
4.73 < 11.50 JUN 5.72 <
4.29 4.71 JUL 4.18 <
5.37 4.86 i
AUG 3.56 <
6.65 <
5.54 4.25 <
7.71 SEP 3.18 <
6.23 5.49 OCT 3.64 <
5.01 4.02 NOV 2.91 6.06 <
6.68 4.32 <
6.30 DEC 2.70 <
4 96 4.83 MAX LLD 71.60 <
LLD LLD <
LLD AVG 49.05 MIN 26.50 i
34
RIVER BEND STATION RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT FOR 1996 Gamma-Emitting Nuclide Activity (pCl/ liter)in Water
+
L COBALT - 60 (LLD = 15 pCi/L)
INDICATORS CONTROLS PERIOD SWD DL WD SWU WU i.
JAN 3.23 283.00 2.86 FEB 5.17 138.00 <
11.9 7.04 <
8.01 MAR 3.60 7.35 3,97 APR 7.31
< 10.30 4.50 MAY 4.13 <
5.95 <
9.59 5.23 < 11.80 JUN 2.55 9.79 3.90 JUL 3.31 4.41 4.11 AUG 3.67 <
6.79 <
7.28 5.60 <
7.35 SEP 4.63 <
7.67 4.69 I
OCT 4.77 17.40 3.68 NOV 2.09 <
5.91 6.87 5.19 <
5.48 DEC 3.62 <
5.35 2.30 i
MAX LLD 283.00 <
LLD LLD <
LLD AVG 78.66 MIN 4.41 ZINC - 65 (LLD = 30 pCl/L)
INDICATORS CONTROLS PERIOD SWD DL WD SWU WU JAN 2.93 9.06 5.04 FEB 10.40 <
14.20 < 20.60
< 12.70 < 16.30 MAR 8.14 8.13 7.15 APR 11.90 <
14.10 9.52 MAY 9.01 7.73 < 16.70
< 11.20 < 24.50 JUN 11.50 <
7A9
< 10.30 l
JUL 7.52 <
8.75 6.57 AUG 13.10 < 11.80 < 12.10
< 12.80 < 22.00 SEP 8.76 < 10.90 7.40 OCT 8.77 <
8.47 9 46 NOV 9.34 14.10 < 14.30
< 12.10 < 14.10 l
DEC 11.60 < 14.80 9.08 l
LLD AVG 9.06 MIN 9.06 l
i 35 i
v
.=_
RIVER BEND STATION RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT FOR 1996 Gamma-Emitting Nuclide Activity (pCl/ liter)in Water NIOBlUM - 95 (LLD = 15 pCi/L)
INDICATORS CONTROLS i
PERIOD SWD DL WD SWU WU JAN 4.84 11.50 4.04 FEB 6.23 <
7.89 < 12.90 7.40 <
8.19
-MAR 5.44 5.03 5.07 APR 7.29 <
8.87 5.99 MAY 6.73 <
4.67 10.40 6.24 < 14.30 JUN 6.95 <
4.68 5 68 JUL 6.10 <
5.60 4.57 AUG 7.39 <
9.12 <
8.10 4.47 6.34 SEP 5.66 <
6.74 5.28 OCT 5.72 <
5.35 4.57 l
NOV 6.52 <
6.90 <
7.96 5.57 <
7.80 DEC 4.86 <
7.43 4.27 MAX LLD 11.50 <
LLD LLD <
LLD AVG 11.50 MIN 11.50 ZlRCONIUM - 95 (LLD = 30 pCi/L)
INDICATORS CONTROLS PERIOD SWD DL WD SWU WU J
i JAN 6.62 <
7.85 5.92 FEB 9.55 < 11.60 < 19.50
< 12.60 < 11.40 MAR 7.91 7.07 6.81 APR 14.20 <
14.60 9.31 MAY 9.44 <
8,90 < 17.50 8.56 < 15.80 JUN 8.79 <
7.45 9.32-JUL 8.12 <
8 42 6.23 j
AUG 7.36 <
- 19. 90 < 11.90 6.38 < 16.50 SEP 10.50 <
9.80 6.93 OCT 8.59 <
6.71 7.25 NOV 10.90 <
9.49 <
9.01 9.53 < 11.40 DEC 6.87 < 10.60 7.41 MAX LLD <
LLD <
LLD LLD <
LLD AVG MIN l
36
RIVER BEND STATION
]
RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT FOR 1996 1
l
)
Gamma-Emitting Nuclide Activity (pCl/ liter)in Water POTASSIUM.40 (No LLD, Natural )
INDICATORS CONTROLS i
PERIOD SWD DL WD SWU WU JAN 49.1 39.3 60.7 FEB 53.5 l
MAR 36.1 37.3 APR i
MAY JUN j
JUL AUG SEP OCT NOV DEC MAX 49.1 53.5 60.7 AVG 42.6 46.4 49.0 MIN 36.1 39.3 37.3 CHROMlUM 51(No LLD)
COLLECTION CONTROLS j
DATE SWD DL WD SWU WU i
JAN 237 FEB MAR APR MAY JUN JUL I
AUG SEP OCT NOV DEC MAY 237 AVG 237 MIN 237 37
~
_. - _ ~ _
RIVER BEND STATION RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT FOR 1996 l
l Normalized Gamma-Ray Exposure Summary (mR)
Quarterly Thermoluminescence Dosimeter Results INDICATOR LOCATION LQCAT!ONS 1ST QTR 2ND QTR 3RD OTR 4TH QIR MEAN TA1 10.70 10.48 1?12 12.49 11.70 l
TA2 13.83 14.58 16.68 16.30 15.35 i
TB1 14.76 14.76 17.84 17.04 16.10 TB2 15.77 16.48 18.72 16.96 16.98 TC1 14.26 16.28 17.24 16.24 16.01 I
TC2 13.35 13.48 15.01 13.30 13.79 TCS 12.87 14.08 14.92 14.33 14.05 l
TD1 15.05 17.28 16.40 18.12 16.71 TD2 14.70 17.48 15.47 14.90 15.64 l
TE1 13.77 15.08 15.09 15.16 14.77 TE2 12.19 12.48 12.04 13.11 12.45 TF1 14.66 15.18 15.27 14.86 14.99 TF2 15.48 15.88 15.47 15.74 15.64 TG1 15.65 15.58 15.46 17.23 15.98 i
TG2 14.76 13.94 15.84 14.97 14.88 TH1 12.48 12.08 13.96 13.38 12.97 t
TH2 13.25 13.58 12.69 14.33 13.46 TJ1 13.57 13.68 12.93 13.28 13.36 TJ2 11.79 12.27 13.04 13.93 12.76 TK1 13.87 13.98 14.90 16.05 14.70 i
TK2 14.68 13.96 15.92 14.85 TKS 15.55 13.33 13.61 13.33 13.95 TL1 13.47 14.78 15.84 14.76 14.71 TL2 13.12 15.84 14.91 15.37 14.81 TLS 15.46 15.55 16.87 16.47 16.09 TM1 12.28 12.78 12.46 13.87 12.85 TM2 18.20 16.77 17.55 16.93 17.36 TN1 15.25 15.98 15.65 14.86 15.43 TN2 12.53 12.55 12.66 13.53 12.82 TP1 15.94 14.98 15.46 16.24 15.66 TP2 13.64 14.00 15.69 15.46 14.70 TQ1 13.87 13.52 14.62 14.96 14.24 TQ2 13.93 12.56 14.13 14.25-13.72 TQS1 14.68 14.48 16.08 15.83 15.27 TQS2 13.31 12.66 13.19 15.36 13.63 TR1 11.20 10.65 10.70 11.40 10.99 TR2 14.51 15.28 15.29 15.55 15.16 TRS 15.19 15.08 15.57 15.83 15.42 i
MAX 18.20 17.48 18 72 18.12 17.36 AVG 14.04 14.30 14.93 15.04 14.58 MIN 10.70 10.48 10.70 11.40 10.99 f
l 38
RIVER BEND STATION RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT FOR 1996 Normalized Gamma-Ray Exposure Summary (mR)
Quarterly Thermoluminescence Dosimeter Results CONTROL LOCATION LQCAILONS 1ST QTR 2ND_QIB 3RD QTR 4TH QTR MEAN i
TAC 14.49 13.98 15.66 13.99 14.53 TEC 13.74 15.78 15.38 15.75 15.16 i
TGS 14.58 14.90 16.19 15.06 15.18 THS 18.20 17.98 18.03 17.71 17.98 TLC 12.63 12.09 13.34 12.71 12.69 TQS3 14.29 13.46 15.55 14.43 i
t MAX 18.20 17.98 18.03 17.71 17.98 i
AVG 14.65 14.70 15.72 15.13 15.00 MIN 12.63 12.09 13.34 12.71 12.69
- data lost 1
INDICATOR CONTROL MAX 18.72 18.20 j
AVG 14.58 15.05 MIN 10.48 12.09
)
39
RIVER BEND STATION RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT FOR 1996 Charcoal Cartridge icdine-131 Activity (E-2 pC1/m*3)(LLD = 0.07 pCi/m^3)
Earted l
Indicators l
l controls l
Endlos AA1 Afl1 AE1 A2S2 ALG AGS 01/09/96
< 2.16
< 2.48
< 2.62
< 2 57
< 2.25
< 2.37 01/16/96
< 1.45
< 2.10
< 2.33
< 2.03
< 2.63
< 1.87 01/23/96
< 1.97
< 2.99
< 2.56
< 2.52
< 1.77
< 1.48 01/30/96
< 2.22
< 3.07
< 1.99
< 1.71
< 2.43
< 2.14 02/06/96
< 1.69
< 1.83
< 1.26
< 1.99
< 1.31
< 2.06 02/13/96
< 1.78
< 161
< 2.59
< 1.97
< 1.93
< 1.49 02/21/96
< 1.63
< 1.83
< 1.82
< 1.67
< 1.35
< 1.59 02/26/96
< 2.48
< 2.85
< 2.34
< 2.56
< 3.31
< 2.11 03/05/96
< 1.61
< 1.62
< 1.99
< 1.88
< t80
< 1.62 03/12/96
< 1.22
< 2.13
< 1.96
< 1.61
< 1.54
< 165 03/18/96
< 1.89
< 1.90
< 2.65
< 1.52
< 1.70
< 2.00 03/25/96
< 2.11
< 2.10
< 1.67
< 1.86
< 1.48
< 1.49 04/03/96
< 1.78
< 1,42
< 1.37
< 1.72
< 1.86
< 1.67 04/09/96
< 2.34
< 1.42
< 2.17
< 193
< 2.18
< 2.25 04/16/96
< 2.13
< 1.81
< 109
< 2.14
< 1.92 04/23/96
< 2.18
< 1.89
< 1.89
< 1.99
< 2.09 04/29/96
< 1.86
< 1.95
< 1.45
< 1.69
< 2.14 05/06/96
< 182
< 1.45
< 2.41
< 1.35
< 2.15 05/13/96
< 1.73
< 2.41
< 1.78
< 1.86
< 1.89 05/20/96
< 1.78
< 1.68
< 2.47
< 1.54
< 2.02 05/28/96
< 099
< 1.81
< 2.01
< 1.69
< 2 07 06/03/96
< 1.99
< 3.15
< 3.00
< 2.01
< 1.79 03/10/96
< 2.32
< 2.80
< 2.02
< 2.36
< 2.71 06/17/96
< 1.64
< 2.88
< 2.32
< 3.64
< 2.19
{
06/24/96
< 2.08
< 2.44
< 1.79
< 3 88
< 1.88 07/01/96
< 1.06
< 2.82
< 1.24
< 1.92
< 2.27 07/08/96
< 1.97
< 2.58
< 2.31
< 2.41
< 1.76 07/15/96
< 1.86
< 2.16
< 1.17
< 3.20
< 1.75 07/22/96
< 2.12
< 2.66
< 1.34
< 2.49
< 1.82 07/29/96
< 1.75
< 1.20
< 1.75
< 2.81
< 2.56 08/05/96
< 1.58
< 1.83
< 2.00
< 1.53
< 2 65 08/12/96
< 1,82
< 2.30
< 2.48
< 1.80
< 2.53 08/19/96
< 1.45
< 2.14
< 1.36
< 2.03
< 1.25 08/26/96
< 1.94
< 2.44
< 2.40
< 2.62
< 2.31 09/03/96
< 1.43
< 1.61
< 1.25
< 1.20
< 2.11 09/09/96
< 1.62
< 2.09
< 2.04
< 3.16
< 1.47 09/16/96
< 1.10
< 1.47
< 1.24
< 1.26
< 1.08 09/23/96
< 1.14
< 096
< 1.13
< 1.35
< 1.03 09/30/96
< 1.27
< 1,43
< 0.96
< 1.49
< 1.15 10/07/96
< 1.29
< 1.57
< 1.56
< 1.10
< 1.40 10/14/96
< 1.28
< 1.33
< 1.36
< 1.34
< 1.17 10/21/96
< 1.12
< 1.36
< 1.28
< 2.89
< 1.12 10/28/96
< 0.93
< 1.25
< 1.27
< 1.44
< 1.26 11/04/96
< 1.01
< 1.24
< 1.40
< 1.07
< 1.15 11/11/96
< 1.26
< 1.46
< 1.12
< 1.39
< 1.14
]
11/18/96
< 1.48
< 1.38
< 1.29
< 1.16
< 1.28 l
11/25/i 3
< 1.20
< 1.35
< 1.21
< 1.43
< e.09 12/02/96
< 1.20
< 1.21
< 1.33
< 1.63
< 1.15 12/09/96
< 1.49
< 1.29
< 1.55
< 1.40
< 1.37 12/16/96
< 1.51
< 1.57
< 1.36
< 1.35
< 1.50 12/23/96
< 1.15
< 1.20
< 1.60
< 1.13
< 1.13 l
12/30/96
< 1.24
< 1.10
< 1.48
< 1.38
< 093 MAX
<LLD
<LLD
<LLD
<LLD
<LLD
<LLO AVG
- see note MIN page d*s 40
RIVER BEND STATION RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT FOR 1996 Air Particulate Filter Gross Beta Activity (E-2 pCi/m^3)(LLD = 0.01 pCl/m^3)
Period l
Indicators l
l Controls l
3 Ending AA1 AR1 AP_1 AQS2 ALG AQ3 01/09/96 3.94 3.69 3.82 3.60 4.08 3.24 01/16/96 2.23 2.53 2.31 2.17 2.26 2.10
{
01/23/96 2.65 2 40 2.65 2.34 2.72 2.44 01/30/96 2.36 2.49 2.25 2.17 2.48 2.12 02/06/96 2.82 2.39 2.91 2.48 2.68 2.34 02/13/96 1.66 1.40 1.62 1.39 1.78 1.34 02/21/96 3.04 3.07 3 64 2.44 2.81 2.37 02/26/96 3.97 3 82 3.88 3.49 4 67 3.44 03/05/96 2.86 2.61 2.52 2.58 2.59 2.52 03/12/96 2.12 2.10 2.07 2.20 2.17 1.58 03/18/96 1.18 1.77 1.59 1.67 1.37 1.62 03/25/96 2.39 2.64 2.22 2.25 2.28 2.33 04/03/96 2.12 2.22 1.96 2.02 2.01 1.96 04/09/96 2.92 2.73 2.74 3.07 2.75 2.78 04/16/96 2.32 2.26 2.30 2.12 2.42 04/23/96 2.64 1.63 2.46 2.34 2.34 04/29/96 1.97 1.93 2.00 1.80 2.11 05/06/96 5.71 5.35 5.38 5.47 5.76 05/13/96 5.71 4.01 3.70 4.61 4 31 05/20/96 3.75 3.64 4 00 3.88 3.94 05/2E/96 5 53 5.21 5.23 4.96 4.35 06/03/96 10.10 7.40 6.71 6.19 8.34 06/10/96 2.23 2.28 2.21 1.98 2.47 06/17/96 1.69 1.75 1.69 1.90 1.83 06/24/96 1.46 1.70 1.66 1.56 1.38 i
07/01/96 2.02 1.97 1.92 1.93 1.81 07/08/96 3.31 3.51 3.31 2.97 3.10 07/15/96 2.15 2.53 2.24 2.15 2.23 07/22/96 1.59 1 66 1.57 1.45 1.55 07/29/96 1.46 1.80 1.49 1.38 1.60 OS/05/96 1.99 2.13 2.14 2.26 1.99 08/12/96 1.55 1.67 1.54 1 48 1.58 08/19/96 3.20 3 47 3.13 3.28 3.34 08/26/96 2.60 2.82 2.72 2.73 2.82 09/03/96 1.63 1.51 1.54 1.63 1.60 09/09/96 2.39 2.75 2.53 2.74 2.61 09/16/96 3.98 4 05 4.15 4.55 4.07 09/23/96 2.22 2.17 2.46 2.25 2.27 09/30/96 3.39 3.12 3.25 3.28 3 41 10/07/96 1.93 1.97 1.92 2.03 1.83 10/14/96 3.17 3.25 3.26 3.46 3.44 10/21/96 2.60 2.80 2.64 4.11 2.69 10/28/96 1.85 1.78 1.57 1.76 1.86 11/04/96 2.33 2.26 2.38 2.00 2 31 11/11/96 2.68 2.58 2.47 2.40 2.33 11/18/96 2.96 2.86 2.87 2.58 2.63 11/25/96 2.27 2.00 2.00 2.16 1.98 12/02/96 2.88 2.54 2.71 2.84 2.77 12/09/96 3.41 3.40 3.16 3.12 3 20 12/16/96 2.19 1.91 1.89 2.00 1.75 12/23/96 2.26 2.11 1.91 2.04
- see note 2.07 12/30/96 1.81 1.82 1.70 1.89 page 43 1.63 MIN 1.18 1.40 1.49 1.38 1.37 1.34 MAX 10.10 7.40 6 71 6.19 4 67 8.34 AVG 2.79 2 68 2 65 2 64 2.62 2 61 INDICATOR:
MIN: 1.18 MAX: 10.10 AVG: 2.69 CONTROL:
MIN: 1.34 MAX: 8.34 AVG: 2 62 41
RIVER BEND STATION RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT FOR 1996 i
Air Particulate Filter Composite Cs-134 Activity (E-2 pCl/m^3) by location (LLD = 0.05 pCl/m^3)
PERIOD AA1 AB1 AE1 AQ$2 AL.q.
Ag3 1ST QTR
< 0.26
< 0.48
< 0.48
< 0.47
< 0.28
< 0.39 2ND QTR
< 0.44
< 0.28
< 0.17
< 0.1
< 0.33 3RD QTR
< 0.14
< 0.14
< 0.12
< 0.16
< 0.12 4TH QTR
< 0.12
< 0.11
< 0.16
< 0.15 see
< 0.14 note MAX.
< LLD
< LLD
<LLD
< LLD
< LLD
< LLD AVG MIN l
Air Particulate Filter Composite Cs-137 Activity (E-2 pCi/m^3) by location (LLD = 0.06 pCl/m^3)
DAIE AA1 AR1 AE1 AQS2 ALC AGs 1ST QTR
< 0.52.
< 0.43
< 0.72
< 0.42
< 0.33
< 0.68 2ND QTR
< 0.34
< 0.49
< 0.27
< 042
< 0.31 3RD QTR
< 0.11
< 0.14
< 0.14
< 0.08
< 0.11 4TH QTR
< 0.16
< 0.13
< 0.13
< 0.09 see
<008 note MAX
<LLD
<LLD
<LLD
< LLD CLLD
< LLD AVG MIN
)
Note: Acivitaties indicated are minimum detectible activities (MDA). Samples counted are composed of thirteen filters from eIch location composited each quarter. Location ALC was discontinued. See program exceptiens.
J h
42
RIVER BEND STATION
{
i RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT FOR 1996 Charcoal Cartridge Potassium-40 Activity (E 2 pCi/m^3) by location Period l
Indicators l
l Controts l
Endina AA1 AR1 AP1 AQS2 ALC AGS 01/09/96 53.60 42.00 01/16/96 60.00 56.50 74.50 62.00 l
01/23/96 28 20
$5.90 42.90 44.80 01/30/96 49.80 29.70 36.50 02/06/96 29.90 71.30 62.10 28.90 02/13/96 26.50 44.20 48.50 31.50 47.80 02/21/96 56.30 58.00 43.90 19.30 53.00 02/26/96 73.60 73 60 74.30 03/05/96 46.80 44.20 55.30 44.20 03/12/96 28.40 58.70 46.90 47.20 53.10 18.90 03/18/96 79 60 52.00 60.30 71.60 03/25/96 41.50 31.20 53.60 71.70 50.80 48.80 04/03/96 38.20 43.30 31.60 32.80 32.60 04/09/96 56.30 72.90 63.20 55.90 04/16/96 38.10 29.80 49.90 71.50 04/23/96 41.10 27.70 36.10 J
04/29/96 64.40 38.90 38.40 05/06/96 56.40 41.40 29.30 05/13/96 72.40 f 5.40 47.70 25.60 25.60 05/20/96 27.00 43.90 41.30 05/28/96 17.70 31.10 28.80 26.10 06/03/96 54.10 06/10/96 32.80 49.80 43.10 06/17/96 06/24/96 47.50 07/01/96 64.70 35.90 07/08/96 60.90 61.60 37.50 07/15/96 36.80 45.40 07/22/96 32.70 58.30 47.60 07/29/96 55.10 64.80 66.10 08/05/96 29.00 51.50 30.40 08/12/96 55.90 67.50 47.20 45.10 08/19/96 36.00 38.50 41.70 37.40 08/26/96 24.20 38.20 09/03/96 31.30 09/09/96 59 00 45.00 57.80 09/16i96 34.00 52.50 35.10 09/23/96 37.00 29.70 36.10 09/30/96 31.80 10/07/96 33.10 10/14/96 49.00 25.70 30.10 l
10/21/96 45.40 36.60 91.60 10/28/96 31.30 11/04/96 43.20 30.00 31.00 11/11/96 51.90 11/18/96 42.40 11/25/96 30 40 46.20 37.40 12/02/96 27.90 46.90 49 80 39.80 12/09/96 27.50 57.30 4950 38.00 l
i 43
i RIVER BEND STATION j
RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT FOR 1996 1
Charcoal Cartridge Potassium 40 Activity (E-2 pCi/m^3) by location Egdgd l
Indicators l
l Controls l
Ending AA1 AR1 AE1 AQE2 ALG AGS 12/16/96 12/23/96 41.50 12/30/96 47.20 52.00 41.40 MIN 24.20 17.70 29 70 25.60 19.30 18.90 MAX 72.40 73.60 79.60 91.60 63.20 71.60 AVG 40.51 48.49 48 33 48.33 47.73 40.96 INDICATOR:
MIN: 17.70 MAX: 91.60 AVG: 46.42 CONTROL:
MIN: 18.90 MAX: 71.60 AVG: 44.34 i
j 44
RIVER BEND STATION RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT FOR 1996 t
I
]
Gamma-Emitting Nuclide Activity (pCl/kg wet)in Upstream Fish LLD's (pci/kg, wet)
COLLECTION 130 150 130 260 130 130 260 DATE CS 134 CS-137 MN-54 F E-59 CO-58 CO-60 ZN-65 K-40 07/08/96
< 69.70
< 84.30
< 103.00
< 248.00
< 109 00
< 123.00
< 203.00 07/08/96
< 21.00
< 32.90
< 16.60
< 71.50
< 20.00
< 39.70
< 18.00 2683 07/08/96
< 83.40
< $2.00
< 76.90
< 133.00
< 115 00
< 33.20
< 233.00 3506 12/28/96
< 67.00
< 73.50
< 74.80
< 97.20
< 91.50
< 26.00
< 184.00 2891 12/28/96
< 75.30
< 67.80
< 75.50
< 251.00
< 71.30
< 96.70
< 159.00 12/28/96
< 71.70
< 95.00
< 75.30
< 208.00
< 129.00
< 77.30
< 217.00 3898 MAX
< LLD
< LLD
< LLD
< LLD
< LLD
< LLD
< LLD 3898 AVG 3245 MIN 2683 Gamma-Emitting Nuclide Activity (pCi/kg wet)in Downstream Fish j
COLLECTION DATE CS 134 CS-137 MN 54 FE-59 CO-58 CO-60 ZN-65 K-40 07/08/96
< 60.5
< 83.80
< 64.00
< 219 00
< 59.70
< 76.40
< 219,00 666 07/08/96
< 26.9
< 26.70
< 29.70
< 27.00
< 44.00
< 42.70
< 108.00 2627 07/08/96
< 64.1
< 80.70
< 69 40
< 139 00
< 56.20
< 108.00
< 215 00 2272 i
12/20/96
< 48.2
< 52.00
< 81.90
< 2?100
< 88.20
< 90.90
< 162.00 3384 1
12/28/96
< 64.1
< 64.50
< 68.90
< 180.00
< 94.10
< 114.00
< 170.00 3032 12/28/96
< 62.0
< 38.30
< 52.10
< 222.00
< 57.30
< 70.30
< 158.00 3341 MAX
< LLD
< LLD
< LLD
< LLO
< !.LD
< LLD
< LLD 3384 AVG 2554 MIN 666 i
Gamma-Emitting Nuclide Activity (pCi/kg dry)in Shoreline Sedlinent LLD's (pCl/kg): Cs 134=150; Cs-137=180 COLLECTION UPSTREAM DOWNSTREAM DATE CS-134 CS-137 K-40 CS-134 CS-137 K-40 DATE 6/20/96
< 25.7
< 36.4 13000
< 28.1
< 30.4 12150
]
11/26/96
< 36.0 55.1 14420
< 23.7
< 29.7 13110 MAX
< LLD 55.1 14420
< LLD
< LLD 13110 l
AVG
$5.1 13710 12630 MIN 55.1 13000 12150 4
NOTE:
Activities indicated as "<* are minimum detectable activities (MDAs). The upstream sediment sample is not required in the TRM.
45
RIVER BEND STATION RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT FOR 1996 Gamma-Ernitting Nuclide Activity (pCl/kg, wet)in Broadleaf Vegetation Site Garden #1 (Indicator) l LLD's (pCi/kg, wet)
COLLECTION 60 80 60 DATE CS 134 CS-137 l131 BE 7 K-40 01/31/96
< 33.1
< 39 8
< 51.6 692 6433 01/31/96
< 34.4
< 36.7
< 52.2 3209 02/29/96
< 47.4
< 52.2
< 33 6 3163 03/08/96
< 26.9
< 43 0
< 25.2 623 2384 03/29/96
< 22.1
< 30.2
< 45.7 321 2160 03/29/96
< 29.8
< 33.1
< 50.5 521 1997 04/29/96
< 24.9
< 45.4
< 26.2 368 1635 05/24/96
< 25.0
< 36.5
< 28.1 4628 C3/19/96
< 32.9
< 13 9
< 34.1 3085 06/19/96
< 25.3
< 37.5
< 25.0 2911 C3/19/96
< 33 8
< 36.7
< 43.2 3354 07/26/96
< 38.4
< 58.9
< 35.7 3779 07/26/96
< 31.2
< 50.5
< 45.2 1095 3879 07/26/96
< 36.1
< 40 4
< 37.5 3430 08/20/96
< 49.5
< 36.4
< 49 2 1416 4606 08/20/96
< 45.6
< 41.5
< 44 0 5688 08/20/96
< 40.2
< 67.2
< 46.3 3515 09!10/96
< 42.4
< 40 9
< 32.4 2302 3074 09/10/96
< 28.2
< 38.9
< 22 9 5553 09/10/96
< 23.2
< 21.1
< 28.7 3603 10/28/96
< 23 2
< 22.7
< 31.5 567 5257 1
10/28/96
< 15.1
< 26.9
< 31.3 3908 10/28/96
< 27.2
< 30.4
< 38 9 4494 11/21/96
< 34.2
< 45.8
< 31.1 5324 11/21/96
< 37.4
< 33.5
< 26.1 3093 11/21/96
< 43.3
< 22.8
< 36.7 6132 12/19/96
< 24.5
< 36.5
< 35.7 3878 12/19/96
< 18.2
< 24 4
< 22.2 5322 12/19/96
< 22.5
< 25.3
< 23.5 6131 MAX
< LLD
< LLD
< LLD 2302 6433 AVG 878 3987 MIN 321 1635 NOTE:
Acimties indicated as *<" are minimum detectable activities (MDAs).
l l
46 l
RIVER BEND STATION l
RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT FOR 1996 l
Gamma-Emitting Nuclide Activity (pCilkg wet)in Broadleaf Vegetation Site Garden #2 (Indicator)
LLC's (pC1/kg, wet)
Ct. LLECTION 60 80 60 DATE CS-134 CS 137 l-131 BE-7 K 40 i
4/29/96
< 21.4
< 31.0
< 27.4 195 2758 4/29/96
<564
< 68.4
< 56.2 2797 4/29/96
< 41.3
< 40.9
< 38.2 763 4948 5/30/96
< 45.4
< 37.4
< 42.6 3624 l
5/30/96
< 29.8
< 37.4
< 28.6 4057 5/30/96
< 24.5
< 24.6
< 34.1 3369 6/19/96
< 19.9
< 20.4
< 25.7 3125 6/19/96
< 20.6
< 24.1
< 23.1 3367 6/19/96
< 22.0
< 31.4
< 25.9 4297 7/26/96
< 25.1
< 26.8
< 35.1 3635 7/26/96
< 47.9
< 35.0
< 46.6 1102 4073 7/26/96
< 46.2
< 48 2
< 45.8 3380 8/20/96
< 36.0
< 26.8
< 32.1 888 5157 8/20/96
< 27.1
< 43 0
< 30.5 3879 8/20/96
< 35.7
< 48.9
< 37.2 4228 9/10/96
< 46.1
< 38.9
< 50.0 3804 l
9/10/96
< 33 8
< 40.0
< 22.5 1275 4286 I
9/10/96
< 30.3
< 36.6
< 23.8 5750 10/28/96
< 21.1
< 17.7
< 24.6 2400 10/28/96
< 23.0
< 27.2
< 25.7 3188 10/28/96
< 28.7
< 22.6
< 35.1 3821 11/21/96
< 19.7
< 24 4
< 18.3 5051 11/21/96
< 31.4
< 19.0
< 27.3 3214 11/21/96
< 24.4
< 30.3
< 13.3 2355 12/19/96
< 25.5
< 32.2
< 26.3 368 4191 l
12/19196
< 25.4
< 30.7
< 37.3 3241 i
12/19/96
< 20.4
< 24.5
< 19.8 299 4528 l
MAX
< LLD
< LLD
< LLD 1275 5750 AVG 699 3797 l
MIN 195 2355 l
NOTE:
Activities indicated as "<* are minimum detectable actnnties (MDAs).
l 1
1 47
{
i r
l RIVER BEND STATION RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT FOR 1996 l
J Gamma-Emitting Nuclide Activity (pCl/kg wet)in Broadleaf Vegetation Angola Location (control) i LLD's (pCllkg, wet)
COLLECTION 60 80 60 DATE CS-134 CS-137 l-131 BE7 K-40 1/11/96
< 22.8
< 24.9
< 52.5 3321 1/11/96
< 23,7
< 25.5
< 58.5 4412 1/11/96
< 21.0
< 18 8
< 58.2 2500 2/27/96
< 24.6
< 37.7
< 38.2 6427
{
2/27/96
< 58.6
< 68.5
< 59.2 11160 1
2/27/96
< 23.2
< 37.0
< 28.8 4059 3/27/96
< 38.2
< 43.2
< 34.7 3426 3/27/96
< 47.4
< 60.8
< 39.9 5859
)
3/27/96
< 26.4
< 37.1
< 45 6 3542 l
4/12/96
< 17.6
< 17.9
< 43.9 2726 4/12/96
< 22.7
< 32.4
< 56.8 6017 5/23/96
< 19.5
< 26.1
< 27.4 3215 j
5/23/96
< 30.3
< 34.9
< 28.6 4258
{
5/23/96
< 40.8
< 51.1
< 34.8 3916 6/21/96
< 25.4
< 23.1
< 46.0 3069 6/21/96
< 35.0
< 45 4
< 45.3 4802 6/21/96
< 37,7
< 39.2
< 41.7 4057 7/16/96
< 39 4
< 36.6
< 41.2 264 3881 7/16/96
< 46.0
< 48 4
< 34 4 915 2053 7/16/96
< 36.4
< 38.1
< 36.3 904 3292 8/13/96
< 33.3
< 44.4
< 51.7 430 5796 8/13/96
< 34.4
< 31.7
< 34.5 333 3773 8/13/96
< 37.6
< 54.0
< 33.2 6487 9/17/96
< 21.8
< 29.0
< 56.0 629 6898
]
9/17/96
< 26.4
< 31.9
< 40.8 793 3492 9/17/96
< 18.7
< 27.8
< 35.6 4807 10/16/96
< 30.8
< 32.8
< 42.3 5390 10/16/96
< 19.0
< 32.6
< 37.5 4916 10/16/96
< 26.7
< 33.6
< 41.9 480 3426 11/19/96
< 25.9
< 32.6
< 26.7 3553 11/19/96
< 19 8
< 35.1
< 26.7 263 1553 11/19/96
< 22.5
< 26.5
< 25.2 2881 12/17/96
< 21.4
< 24.3
< 29 9 2540 12/17/96
< 24.7
< 218
< 29.6 2243 12/17/96
< 25.7
< 18 8
< 29.4 211 2935 MAX
< LLD
< LLD
< LLD 915 11160 AVG 522 4191 MIN 211 1553 NOTE:
Activities indicated as "<" are minimum detectable activities (MDAs).
48
RIVER BEND STATION RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT FOR 1996 Gamma Emitting Nuclide Activity (pCl/kg dry)in East and West Creek Sediments 4
LLD's (pCilkg): Cs 134=150; Cs-137=180 l
COLLECTION East Creek West Creek DATE CS-134 CS-137 K-40 CS 134 CS 137 K-40 l
2/28!96
< 14 8
< 17.0 1234
< 19.7
< 22.5 1142 5/21/96
< 13.2
< 10.9 572
< 13.2
< 19 0 1248 a
8/6/96
< 18.5
< 29.7 1978
< 16.5
< 30.8 1122 11/7/96
< 12.2
< 12.8 1076
< 10.7
< 13.1 658 MAX
< LLD
< LLD 1234
< LLD
< LLD 1248 AVG 903 1195 MIN 572 1142 Gamma-Emitting Nuclide Acitivity (pCi/L)in Waste Treatment Plant Effluent LLD's (pCl/L) 15 15 30 15 30 15 30 15 15 COLLECTION DATE MN-54 CO-58 FE-59 CO-60 ZN 65 NB 95 ZR-95 l-131 CS-134 1/16/96
< 2.65
< 3.04
< 6.75
< 2.55
< 5.59
< 3.65
< 5.40
< 14.9 2.55 2/15/96
< 3.27
< 3.12
< 7.66
< 3.17
< 5.57
< 4.53
< 6.43
< 14.9 2.84 3/16/96
< 3.14
< 3.42
< 8.92
< 3.77
< 6.32
< 4.48
< 6.15
< 15.0 3 06 4/15/96
< 4.19
< 5.04
< 10.90
< 4.76
< 9.14
< 5.58
< 9.29
< 14.7 4.85 5/16/96
< 4 07
< 5.37
< 11.20
< 4.73
< 10.60
< 5.36
< 8.30
< 14.3 4 49 I
6/15/96
< 4.43
< 4.08
< 9 53
< 4.62
< 7.78
< 5.87
< 7.69
< 14.7 2.85 7/15/96
< 3.35
< 3.85
< 8.14
< 2.90
< 7.89
< 5.01
< 6.56
< 14.9 3.17 8/16/96
< 4.11
< 6 33
< 11.70
( 5.40
< 14.70
< 6.81
< 12.20
< 14.9 4.14 9/15/96
< 4.75
< 5.14
< 12.40
< 5.05
< 13.70
< 5.06
< 7.28
< 14.9 6.11 10/16/96
< 3.21
< 4.20
< 4.80
< 2.81
< 8.10
< 4.56
< 7.43
< 14.5 3.75 d
11/15/96
< 4.53
< 6.01
< 11.90
< 4.66
< 12.90
< 7.21
< 10.30
< 13.8 4.28 12/16/96
< 3.27
< 4.41
< 9.78
< 4.70
< 4.38
< 4.74
< 8.54
< 12.3 2.79 LLD's (pCi/L) 18 60 15 (none) i COLLECTION DATE CS-137 BA-140 LA-140 K-40 1/16/96
< 2.81
< 28.90
< 10.70 52.50 2/15/96
< 2 91
< 26.60
< 12.00 63.80 3/16/96
< 3.63
< 27.80
< 10.50 74.20 4/15/96
< 5.28
< 35.50
< 14.80 5/16/96
< 5.31
< 30.20
< 12.90 i
G/15/96
< 3.48
< 31.00
< 9.95 7/15/96
< 4.10
< 27.50
< 12.10 8/16/96
< 3.24
< 36.80
< 11.80 9/15/96
< 5.77
< 28.80
< 11.40 10/16/96
< 3.41
< 25.10
< 3.61 11/15/96
< 4 65
< 31.90
< 13.00 12/16/96
< 3.80
< 27.90
< 14.10 Note: Activities indicated as "<" are minimum detectable activities (MDAs). East and West Creek, and Waste Treatment Plant sampies are not required by the TRM. East and West Creek samples are collected and analyzed per U.S. NRC I & E Bulletin B80-10. Waste Treatment Plant samples are monitored at the request of the Radiation Control Department.
49
(
RIVER BEND STATION RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT FOR 1996 l
l APPENDIX B Summarv of Precoerational REMP (Baseline) Results Table B.1 summarizes the results of preoperational radiological environmental monitoring from January,1983, through October,1985. Further details are available in the respective annual reports (1983,1984, and 1985).
l l
i i
50
RIVER BEND STATION RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT FOR 1996 TABLE B.1 PREOPERATIONAL RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM
SUMMARY
(Page 1 of 4)
River Bend Station Docket Number: 50-458 West Feliciana Parish, Louisiana Reporting Period 1/1/83 to 10/31/85 Medium or Type and Total Lower Limit Allindicator Location with Highest Control Number of Pathway Sampled Number of of Detection' Stations Mean (f)8 Annual Mean Locationy Mean Nonroutine 4
(Unit of Measure)
Analyses (LLD)
Range (f)
Reported Performed Range Results Name Mean (f)8 Distance / Direction Range Air Particg) fate Gross Beta 0 01 0 03(752/759)
AQS2 0.03 (146/158) 0.03 (326/327)
N/A (pCi/m (1086) 0.01 009 5.8 km NW D 01 - 0.09 0 01-0.08 5
t Cs-134 0 05 All < LLD All < LLD N/A (95) l 4
Cs 137 0 06 All < LLD All < LLD N/A 7
1 a
Air Radio gdine tt 0 07 All < LLD All < LLD N/A (pCi )
(16-I Direct (TLD)*
Gamma Monthly 6 8 (1018/1064)
TM2 7.8 (27/28) 6.7(139/150)
N/A l
(mR total)
(1214) 0.7 -19.3 4.2 km WSW 32-162 0-27 8 i
Gamma ouarterly 19 0'(404/418)
TG1 27.5 (11/11) 18 9 (51/54)
N/A 8
3 1
(472) 6 8 -32.1 1.8 km SE 12.2 276 6 5-23.5 1
Surface Water H-3 2000 All < LLD All < LLD N/A (pCi/ liter)
(24)
Mn-54 15 All e LLD All < LLD N/A (68) l t
t Co-58 15 All < LLD All < LLD N/A 4
j (68) j Fe-59 30 All < LLD All < LLD N/A (68) g-
]
i Co-60 15 All < LLD All < LLD N/A i
[
(68) l p
j-4 I
Zn-66 30 i
All < LLD N/A (68) l
)
5 Nb-95 15 All < LLD N/A (68) l
+
Zr 95 30 All < LLD l
All < LLD N/A (68) l 5-131 15 All < LLD l
All < LLD N/A
)
Cs-134 15 All < LLD All < LLD N/A i
(68)
Cs-137 18 All < LLD ALL=LLD N/A (68) t --
Ba 140 60 All < LLD ALL < LLD N/A (68) t f
a La 140 J
15 All < LLD 1
All < LLD N/A (68) l I
Gross Beta 4
i 8.1 (23/26)
SWD 8.1 (23/26) 7.8 (24/26)
N/A (52) l 4 -12 4 km downstream 4 12 5-13 51
RIVER BEND STATION l
RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT FOR 1996 l
I TABLE B.1 i
RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM
SUMMARY
(Page 2 of 4)
River Bend Station Docket Number 50-458 West Feliciana Parish, Louisiana Reporting Period 1/1/83 to 10/31/85 l
Medium or Type and Total LowerLimit I All Indicator Location with Highest Control Locations Number of I
Pathway Sampled Number of of stations Mean (f)'
Annual Mean Mean (f)*
Nonroutine (Unitof Measure)
Analyses Detection' Range Range Reported Performed (LLD)
Results Name Mean (f)*
DistanceJDirection Range Groundwater
(24) t 4
+
i Mn-54 15 All < LLD All < LLD N/A I
(22)
L Co-58 l
15 All < LLD All < LLD N/A (22) l y
.s Fe-59 l
30 l
{
l 4
Co 60 15 All c LLD Ali c LLD N/A (22) 2n-65 30 All < LLD All < LLD N/A (22)
Nb-95
(
i (22) i Zr 95 30 All < LLD All < LLD N/A l
(22) 5-131 15 All < LLD All < LLD N/A l
(22)
Cs 134 15 All < LLD All < LLD N/A (22) i p-I Cs-13?
(22)
Ba-140 60 Ali c LLD All c LLD N/A (22)
La-140 15 AI < LLO Ali c LLD N/A (22)
Gross Beta 4
4(5/12)
WD 4 (5/12) 6 (2/3)
N/A (15) 2-8 470 m SW 2-8 39 l
1 t
Dnnking Water
N/A (pCi/ titer).
(18) 7 Mn 54 15 All < LLD All < LLD N/A (40) l t
f I
Co-58 15 All < LLD All < LLD N/A (40)
Fe-59 30 All < LLD All < LLD N,A (40) 4 Co-60 15 All < LLD All < LLD N/A (40)
Zn 65 30 All < LLD All < LLD N/A l
(40) 4 --
t-t l
Nb-95 l
15 All < LLD I
All < LLD N/A (40) j j
j i
I I
52 l
RIVER BEND STATION e'
RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT FOR 1996 TABLE B.1 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM
SUMMARY
(Page 3 of 4)
River Bend Station Docket Number 50-458 West Feliciana Parish, Louisiana Reporting Period 1/1/83 to 10/31/85 Medium or Type and Total Lower Limit All Indicator Location with Highest Control Locations Number of Pathway Sampled Number of of Stations Mean (f)'
Annual Mean Mean (f)'
Nonroutine i
(Unit of Measure)
Analyses Detection' Range Range Reported Performed (LLD)
Results Name Mean (f)*
Distance / Direction Range
~~%"kTiiyi7"{
1 (pCeter) 2'- 5 30 All < LLD All < LLD N/A 4
1-131 15 All e LLD All < LLO N/A (40)
Cs-134 15 All < LLD All < LLD N/A (40) l Cs-137 18 All < LLD All < LLD N/A (40)
Ba-140 60 All < LLD All < LLD N/A (40)
La-140 15 All < LLD All < LLO N/A (40)
Gross Deta 4
6 8(28/28)
Donaldsonville 6 8 (28/28) 7.8 (24/26)
N/A (54) 3 12 138 km downstream 3 12 5-13 Shorehne Sediment
- K-40' None 13700(2/2)
SED 13700 (2/2)
Not N/A (pCvkg dry)
(2)
Required 11400 15900 4 km downstream 11400 -15900 Required Cs-134 150 All < LLD N/A (4) i Cs 137 180 All < LLD All e LLD N/A l
(4)
Milk K 40' None 1313(8/9) l MF2 1313(8/9) 1318(7/9)
N/A (pCs/l ter)
(18)
Required 1170-1475 i
3 km ESE 1179 1475 1196-1409 l-131 1
N/A (81) l l
4 i
Cs-134 15 All<LLD All < LLD' N/A (82) a Cs 137 18 All < LLD l
All < LLD' N/A (82) l Ba 140 60 All < LLD All < LLD' N/A (82)
La-140 15 All < LLD All < LLD N/A (82) 9 Fish / invertebrates K-40" i
None 9037 (2/2)
FD 9037 (2/2) 7840(4/4)
N/A (pCi/kg wet)
(6) l Required 4 km downstream 6320 11754 4177 -11438 t
i Mn-54 1
130 All < LLD I
All < LLD 1
N/A (15) l l
1 p.
Co-58 130 All < LLD l
All < LLD N/A (15)
{
Fe-59 260 All < LLD' All < LLD' l
N/A (15)
I CliG66' 130 All < LLD All < LLD l
N/A 53
1 RIVER BEND STATION RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT FOR 1996 i
4 TABLE B.1 l
RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM
SUMMARY
(Page 4 of 4)
River Bend Station Docket Number: 50-458 West FeliCiana Parish, Louisiana Reporting Period 1/1/83 to 1G'31/85 i
Medium or Type and Total Lower All Indicator Location with Highest Control Locations Number of Pathway Sampled Number of Limit of Stations Mean (f)'
Annual Mean Mean (f)'
Nonroutine (Untt of Measure)
Analy ses Detection' Range Range Reported 4
Performed (LLD)
Results i
Name Mean (r)'
Distarice/ Direction Range Fich/invertebiates Zn-85 260 All < LLD All
- LLD N/A (pCa/k0 wet)
(15) l (co itinued)
)
f Cs-134 130 All < LLD Ali c LLD N/A (15) l Cs-137 160 All < LLD All < LLD N/A (15) i Vegetation K t 0' None 3368(6/10)
G2 3368(6/10) 3768 N/A (pCi/kg wet)
(11)
Required 1398-5389 1.3 km NW 1398 - 5389 single value l'
1-131 60 All < LLD' All < LLD N/A
[
(75)
Cs-134 60 All < LLD All < LLD N/A (76)
Cs 137 60 97 (4/43)
G1 97 (4/43)
All < LLD N/A (76) 59 120 1 km WNW 59-120 NOTES:
(1) Lower Limit of Detection (LLD) as defined in RBS Technical Specifications (NUREG-1172), now TRM.
(2) Mean and range based on detectable measurem,nts only. The fraction of detectable rneasurements at specified locations is indicated in parentheses (f).
J (3) For each of the TLD locations in 1985, a value equal to one-third of its 4th Quarter gamma exposure is used to simulate a " quarterly" rneasurement for October,1985.
(4) 3eginning in January,1985, groundwater was sampled from one upgradient (WU - control) and one downgradent (WD - indicator) well, previously, groundriater was sampled from construction dewatering (well-point) we.lk.
(5) The upstream surface water sampling location (SWU) is used as a " control" for drinking water comparisons.
(6) The values listed for K-40 were derived from the ;nitial in-house analytical program.
(7) The values listed for the control location for milk were denved from the initial in-house analytical program. Training of personnel in calibration and analytical methods delayed sample preparation and counting. As a result, the required LLDs were not met (by the in-house analytical program during this training period)in 2 out of 8 l-131 analyses; 1 out of 9 Cs-134 analyses; 1 out of 9 of Cs-137 analyses; 2 out of 9 Ba-140 analyses; and 4 out of 9 La-140 analyses. Similarly, the required LLD for l-131 in broadleaf vegetation was not met in 1 out of 11 analyses.
j i
(See discussion of Program Exceptions in the Preoperational Radiological Environmental Monitonng Report for 1985.)
(8) The LLD for one downstream fish sample (catfrsh, analyzed in-house) was 265 pCi/kg (wet). The LLD for one upstream fish sample (largemouth bass, analyzed in-house) was 263 pCilkg (wet).
54