RBG-41459, Radiological Environ Operating Rept River Bend Station for Operating Period Jan-Dec 1994
| ML20083A959 | |
| Person / Time | |
|---|---|
| Site: | River Bend  |
| Issue date: | 12/31/1994 |
| From: | James Fisicaro, Odell W, Reed M, Sellman M ENTERGY OPERATIONS, INC. |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| RBF1-95-0111, RBF1-95-111, RBG-41459, NUDOCS 9505110210 | |
| Download: ML20083A959 (53) | |
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Entergy Operations,Inc.
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= ENTERGY River Bend Station 5485 U.S. Highway 61
- e Se 22 y 70,75
]
l Tel 504 336 6?25 Fax 604 635 5068 l
James J. Fisicaro Director Nuclear Saiett April 27,1995 9
U.S. Nuclear Regulatory Commission !
Document Control Desk Mail Stop PI-37 ,
Washington, D.C. 20555
Subject:
Radiological Environmental Operating Report for 1994 River Bend Station - Unit I ;
Docket No. 50-458 File No.: G9.5, G9.25.1.5 RBF1-95-0111 RBG-41459 Gentlemen:
Attached is the River Bend Station (RBS) Annual Radiological Environmental Operating Report for 1994. This report is submitted in accordance with Subsection 6.9.1.7 of Appendix A (Technical Specification) to the RBS Operating License No. NPF-47. ;
Should you have any questions regarding the attached, please contact Ms. Jewel Summers at (504) 336-6345.
Sincerel-fdp/ W JJ / /km attachment i
~
9505110210 941231 8 PDR ADOCK 0500 R
- Radiological Environmental Operating Report for 1994 April 27,1995 RBFI-95-0111 RBG-41459 Page 2 of 2 xc: U.S. Nuclear Regulatory Commission 611 Ryan Plaza Drive, Suite 400 Arlington, TX 76011 NRC Resident Inspector P.O. Box 1051 St. Francisville, LA 70775 !
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RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT RIVER BEND STATION FOR THE OPERATING PERIOD January 1,1994 - December 31,1994 l
Compiled by:
- rn e J Mac Reed Specialist - Environmental i
Reviewed by:
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f William H. Odell '
Superintendent - Radiation Control Approved by:
Michael B. Sellman General Manager- Plant Operations l
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I RIVER BEND STATION RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT FOR 1994 I; Abstract uring 1994, a land use census and radiological environmental monitoring were conducted in the Dvicinity of River Bend Station (RBS). As part of the monitoring program, the RBS Enviro '
Services Group participated in an interlaboratory comparison program with 93.8 percent of analytical results within control limits. The land use census revealed 3 salient changes in receptor locations since 1993. Nineteen monitoring exceptions occurred out of a total effort of 1348 samples collected and 1428 subsequent analyses performed. Seventeen of these exceptions involved Technical Specification I requirements, but none had significant impact on program quality. Although well below the required analytical 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 attnbutable to the 1986 incident at Chernobyl, Russia. The only measurable increases in radionuclide activity, or levels of radiation above baseline levels in the vicinity of RBS during 1994, which are attributed to plant operation, are the expected low levels in the liquid discharge line. The levels of activity measured in environmental media and in the station liquid discharge were below the required analytical detection levels, and therefore substantially below Technical Specification reporting levels.
The 1994 Radiological Environmental Monitoring Program thus substantiated the adequacy of source control and effluent monitoring at River Bend Station during 1994, l
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RIVER BEND STATION RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT FOR 1994 TABLE OF CONTENTS Page
1.0 INTRODUCTION
. . . . . . . .. . . . .1 2.0 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM.... . . . . 1 2.1 Purpose / Bases.. . .. .1 2.2 Environmental Radiation Exposure Pathways.. . . . . . .4 2.3 Land Use Census for 1994.. . . .5 2.4 Interlaboratory Comparison Program Results for 1994.. .. .. . .5 2.5 Program Exceptions.. . . ... ......5 3.0 INTERPRETATION OF REMP RESULTS. . . .. ... .16 3.1 Summary of Operational REMP Results.. . . . .16 3.2 Comparison of Operational and Baseline REMP Results.. . . . . .. . 22 3.3 Comparison of REMP Results with Operational Controls. .23 APPENDICES A. Listings of 1994 REMP Results.. . . .. . .25 B. Summary of Preeperational REMP (Baseline) Results.. . . 43 11 l
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RIVER BEND STATION RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT FOR 1994 LIST OF FIGURES Page Figure 1. Far-field Radiological Environmental Monitoring Locations . ......2 Figure 2. Near-field Radiological Environmental Monitoring Locations.. . . 3 LIST OF TABLES Page Table 1. Radiological Environmental Monitoring Program. . .. . . . . . .6 Table 2. Results of Land Use Census . . . . . . . . . . . . . . .13 Table 3. USEPA Intercomparison (Cross-check) Program Participation Results for 1994. ... . .14 Table 4. Monitoring Program Exceptions in 1994.. . . .. ..15 Table 5. Radiological Environmental Monitoring Program Summary. . . .18 Table 6. Summary Comparison of Liquid Effluent Quantities / Concentrations and REMP Discharge Line Monitoring Results.. . .24 iii
RIVER BEND STATION RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT FOR 1994
1.0 INTRODUCTION
This Annual Radiological Environmental Operating Report for the period of January 1 through December 31,1994, is submitted in accordance with Technical Specification 6.9.1.7 of Appendix A to River Bend Station IJcense Number NPF-47.
River Bend Station (RBS) is a 965 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 five mechanical draft cooling towers which use makeup water from the Mississippi River,3.3 (air) 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 James River Corporation Paper Mill (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 southwestem and southeastem quadrants. Baton Rouge, centered at about 38 km southeast, is the only large city in the general vicinity of RBS.
During 1994, radiological environmental monitoring in the vicinity of RBS was performed by the River Bend Station Environmental Services Group with support from the plant Radiological Programs Department in maintain-ing/ calibrating air samplers and in reading / annealing thermoluminescence dosimeters. On December 31,1993, Gulf States Utilities completed a merger with Entergy, becoming a wholly-owned subsidiary of Entergy. Beginning January 1,1994, Entergy Operations Inc. (EOl), the Entergy business unit responsible for nuclear power operations, became the operator of River Bend Station. The radiological environmental monitoring in the vicinity of RBS will continue to be performed by the Environmental Services Group, now a part of the plant Chemistry Department, with continued support from the plant Radiological Programs Department.
2.0 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM (REMP) 2.1 Purpose / Bases The Radiological Environmental Monitoring Program (REMP) was established to provide representative measurements 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 BEND STATION RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT FOR 1994 The REMP implementsSection IV.B.2 of Appendix 1 of 10CFR50 and thereby supplements the radioactive effluent 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 pathways.
The REMP applies the concepts of indicator vs. control and preoperational vs. operational intercomparisons to verify the adequacy of source controls and resultant human radiation doses. In addition to 10CFR50, Appendix 1, the program is based 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 Exposure Pathways 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 Monitorina Media inhalation Dose (!ntemal) Air Samples (Particulates and Radioiodines)
Ground Plane Dose (external) Thermoluminescence Dosimetry (TLD)
Immersion Dose (external) Thermoluminescence Dosmetry (TLD)
Ingestion Dose (intemal) Vegetation / Food Crop Samples, (B) Direct 6;psure Pathway Monitorina Media Extemal Dose Thermoluminescence Dosimetry (TLD)
(C) Waterborne Pathway Monitorina Media ingestion Dose (intemal) Surface Water Samples Groundwater Sample Drinking Water Samples Fish / invertebrate Samples Shoreline Sediment Samples immersion Dose (extemal) Surface Water Samples Shoreline Sediment Samples Site-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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l RIVER BEND STATION RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT FOR 1994 The program that evolved during the preoperational (baseline) monitoring phase incorporates all of the elements in the RBS Technical Specifications (3/4.12.1, 3/4.12.2, 3/4.12.3) plus special study criteria, and is illustrated in Table 1 and Figures 1 and 2.
2.3 Land Use Census for 1994 The annual land use census, which implementsSection IV.B.3 of Appendix ! of 10CFR50, was conducted during the 1994 growing season in accordance with RBS Technical Specification 3/4.12.2. Table 2 summarizes the results and notes changes in nearest receptor locations within 8 km from those identified in the Radiological Environmental Operating Report for 1993.
The 1994 census identified residences within 8 km of the RBS reactor containment in all sectors except L (SW) and M (WSW). The nearest resident in sector P (WNW) was 3.4 km, unchanged from 1993. The gardens identified in sectors P (WNW) and Q (NW) are the onsite gardens established in the sectors with the highest calculated annual average ground level D/Q. These gardens are REMP indicator locations for broadleaf vegetation (Table 1, Fig. 2). Receptor gardens were found in sectors H (SSE) and K (SSW) at 1.7 km and 7.4 km compared to none in 1993 census. A farther resident was located in sector D (ENE) at 1.6 km, compared to 1.4 km in the 1993 census. No gardens were located in sectors L (SW), M (WSW), and N (W) during the 1994 census.
No dairy animals were found within 8 km of RBS during the 1993 census; milk goats were located at 9 km in sector A (N). Historically, there had never been enough dairy sites to accommodate the minimum RBS Technical Specification requirements for analysis of milk, hence monitoring of broadleaf vegetation has been performed from the outset.
River Bend began a survey of meat animals within the 8 km radius of RBS during the 1990 census. This initial survey identified beef herds in all sectors except L (SW). During the 1991 census, meat animals were located in sector L (SW) at 4.6 km. There were no changes reported in the meat animal survey for 1994 census.
2.4 Interlaboratorv Comparison Proaram Results for 1994 The Environmental Services Group participated in the U.S. Environmental Protection Agency (USEPA) Laboratory intercomparison Program during 1994 in accordance with RBS Technical Specification 3/4.12.3. RBS results (Table 3) were within the control limits for the normalized range (precision) for all analyses, and within the USEPA "known" value (accuracy) for all but two analyses. The discrepancy for these analyses is discussed below. The USEPA discontinued the cross-check media for " food" in 1989, and although milk sampling and analysis is not required of RBS at this time, the results for the cross-check media for " milk" are included as a gauge for the " food" sample analyses (i.e., vegetation and fish) performed.
2.5 Prooram Exceptions Certain samples and analyses were inadvertently omitted or unavoidably altered during the 1994 operating period, out of a total effort of 1348 samples collected and 1428 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 below.
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RIVER BEND STATION RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT FOR 1994 TABLE 1 t RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM (Page 1 of 6)
Exposure Pathway Sample Point Description, Sarnpling and Type and Frequency of and/or Sample Distance, and Direction Collection Frequency Analysis Airborne Particulates and Radioiodines Samples from 9 Locations:
INDICATOR STATIONS AA1. River Bend Training Center; 1.7 km N. Continuous mir sampler with filter Charcoal cartridge:
collection weekty or as required by anatysis weekly for AR1. River Bend Staten North Access Road dust loading, whichever is more radioiodine.
across from plant entrance; O 8 km NNW. frequent.
AP1 N iver Bend Staten Onsite Garden #1; , g ,
AQS2. St. Francis Substaten on US hwy. (Bus.)
61 in St. Francisville; 5.8 km NW (nearest Composite particulate filters:
communitylocaton). analysis quarterty for gamma isotopic actMty.
CONTROL AND SPEC,lAL INTEREST STATIONS' ALC. Parlange Power Center in Oscar; 20 km SW (Control).
AB1. River Bend Staten cooling tower yard; 0.5 km NNE.'
AKS. River Bend Station River Access Road; 2.8 km SSW.'
AGS. GSU Service Center compound in Zachary; i 17 km SE.8 AHS. Roof of GSU Office Building, North Blvd.,
Baton Rouge; 40 km SSE.'
Direct Radiation Measurements from 44 locations:
INDICATOR STATIONS TA1. River Bend Training Center; 1.7 km N. Thermoluminescence dosimeters Gamma exposure quarterly.'
(TLDs); deployment Iretrieval quarterly.
TA2. WF-17 siren pole south of La Hwy 10 and West Feliciana Parish Road (WF) 2 in Elm Park; 8 km N.
TB1. River Bend Staten coohng tower yard; O 5 km NNE.
TB2. Stub pole at Jct of La Hwy 965 and Audubon Lane (WF 17); 5 km NNE.
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RIVER BEND STATION !
RADIOLOGICAL ENV!RONMENTAL OPERATING REPORT FOR 1994 TABLE 1 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM (Page 2 of 6)
Exposure Pathway Sample Point Description, Sampling and Type and Frequency of and/or Sarnple Distarece, and Direction Collection Frequency Analysis Direct Radiation TC1. Stub pole at Jct of US Hwy 61 and Old Thermoluminescence dosimeters Gamma exposure quarterty.'
(continued) Highway 61; 1.7 km NE. (TLDs); eployment / retrieval quarterly 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 Jet of WF 7 and US 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 Jet of wf 7 and US Hwy 61; 1.3 km E.
TE2. Gravel Power Center on La Hwy 68,2 km north of Jct of La Hwys 68 and 964; 10 km E.
TF1. Stub pole along WF 7,1.6 km south of Jct of WF 7 and US Hwy 61; 1.3 km ESE.
TF2. On La Hwy 954,0.6 km north of Jct of La 954 and UG Hwy 61; 6 km ESE.
TG1. Stub pole along WF 7,2 km south of Jet of WF 7 and US Hwy 61; 1.6 km SE. l TG2. Telephone pole at gate to Marathon Tank Farm on US Hwy 61, near Delombre; 7.5 km SE.
TH1. Stub pole at Illinois 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 James River Corporation paper mill; 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 James River Corporation intake structure; 5 8 km S.
TK1. GSU utility pole #L10178 on La Hwy 965,20 rneters south of RBS River Access Road; 0.9 km SSW.
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 1994 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 utility pole on La Hwy 965 south of Thermoluminescence dosimeters Gamma exposure quarterly.*
(continued) former llhnois Central Gulf Railroad crossing; 1.0 (TLDs); de km SW. quarterty.' ployment / retrievat TL2. Second utility pole along La Hwy 415 east of Louisiana & Arkansas Railroad crossing (near Patin's Dike); 9.5 km SW.
TMt. First utility pole on La Hwy 965 north of former Illinois Central Gulf Railroad crossing; 0.9 km WSW.
TM2. Utility 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 electncal meter near west bank ferry landing (La Hwy 10); 6 km W.
TP1. Near RBS Onsite Garden #1; 0.9 km WNW.
TP2 Stub pole about 1.5 km north of former ICG RR trestle on Tunica Street, western 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 Francisville; 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 US Hwy 61; 8 km NNW.
CONTROL AND SPECIAL INTEREST STATIONS' TAC. Telephone pole along US Hwy 61 about 200 meters north of Hamilton Staten Water Tower, near Wakefreid,18 km N.
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1 RIVER BEND STATION RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT FOR 1994 TABLE 1 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM (Page 4 of 6)
Exposure Pathway Sample Point Description, Sarnpling 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 Midway Thermoluminescence dosimeters Gamma exposure quarterly.'
(continued) Road,4 8 km north of Jct of La Hwys 955 and 964; (TLDs); deployment / retrieval 16 km E
- quarterty.'
TLC. Parlange 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, Baton Rouge; 40 km SSE.
TKS. RBS River Access Road; 2.8 km SSW.'
TLS. Utility pole near False River Academy sign at edge of New Roads; 9.9 km SW.
TQS1. Behind Pentecostal Church (opposite West Feliciana Hospital) near Jct of US Hwy 61 and Ferdinand Street; 4 km NW.
TQS2. St. Francis Substation on US 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 US Hwy 61, near Bains (West Feliciana High School); O 2 km N NW.*
d Watert>ome SURFACE WATER SWU. Mississippi River about 4 km upstream from Weekly grabs, composited over Monthlycomposite: gamma ,
the RBS liquid discharge, near La Hwy 10 ferry monthly and quarterty periods. isotopic, tritium
- and gross l crossing. beta analysis". j Quarterly composite: tritium )
analysis.
SWD. Mississippi River about 4 km downstream from the RBS liquid discharge, near the James Rrver Corporation paper mill.
DL. RBS liquid discharge line at the blowdown Flow-weighted hourty grabs, control structure along the River Access Road. composited monthly and quarterty.
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RIVER BEND STATION RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT FOR 1994 TABLE 1 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM (Page 5 of 6)
Exposure Pathway Sample Point Description, Sampling and Typt ad Frequency of and/or Sample Distance, and Direction Collection Frequency Analysis Waterbome DRINKING WATER 6 Nearest downstream water supply: W grabs, composMed over Monthly com ite: gamma lH-10 bridg. e in Baton Rouge,53 9 km downstream month and quarterty penods. isotopic, triti and gross from the RBS hquid discharge; or People's Water beta ana .
Service Company in Donaldsonville, 138 km Quarterly composite: tritium downstream from the RBS hquid discharge. anatysis.
GROUNDWATER WD. Upland Terrace Aquifer well, downgradent Quarterty grab. Gross beta, gamma isotopic, from the plant, about 470 meters SW. and tritiu analyses quart .
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 anafysis km downstream from the plant, near the James semlannually.
River 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 semiannual!y downstreapi area influenced by the RBS liquid or seasonally.
discharge.
FU. Or s sample of each of three commercialty and/or recreationally important species from the upstream area not, influenced by the RBS liquid discharge (control)
PRODUCE 8 G1/G2. Two samples of each of three different Monthly during the growing season. Gavima isotopic and 1-131 types of leafy vegetables from onsite gardens near e?g yses monthly.
tne site boundary 6n areas of highest calculated average ground-level D/Q; 1 km WNW and 1.1 km NW.
GQC. One sample of each of three different kinds of leafy vegetables from the Louisiana State Penitentiary at Angola, 35 km NW (contro!).
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1 RIVER BEND STATION RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT FOR 1994-TABLE 1 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM (Page 6 of 6)
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 Specifications (not identified in ODCM).
(3) Sampling and/or analysis frequency greater than required by RBS Technical Specifications and ODCM.
(4) 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.
(5) Gross beta analysis not required by RBS Technical Specifications and ODCM.
(6) Drinking water sampling / analyses not required by RBS Technical Specifications and ODCM.
(No drinking water pathway exists due to extreme distance to nearest intake). The upstream surface water sampling location (SWU) is used as a " control" for drinking water analyses comparisons.
(7) Preferred species are river shrimp (Macrobracium ohione), blue catfish (letalurus furcatus),
and freshwater drum (Aplodinotus arunniens); if these are unavailable, other edible species may be substituted. ,
(8) No irrigation pathway exists due to the extreme distance of nearest domestic water intake (see Note 6); leafy vegetables are sampled and analyzed because of limited availability of milk samples.
11 l
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I i
RIVER BEND STATION RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT FOR 1994 I
Air Particulates and Radioiodines Thirteen program exceptions, with loss of sample / sample volume, occurred involving air particulate and radioiodine sampling. Seven of these involved special interest location AHS, which were caused by a series of power outages due to the building remodeling at that location. The other six exceptions were a result of equipment problems / failures, which may have been weather related. In spite of the numerous power failures, samples were collected and analyzed from all locations with adequate volumes to achieve all required detection limits, except for indicator location AP1 (6/7/94 - 6/13/94), and special interest locations AKS (9/19/94 - 9/26/94), and AHS (8/16/94
- 8/31/94).
RBS is reviewing 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 will document the extent to which required sampling was achieved. Instruments have been purchased, for each sampling location to plot actual hours of outage when failures occur. This equipment should be fully operational by mid year 1995.
Direct Radiation (TLD)
Data for the first and second quarters at location TA2 was lost dJe to vandalism. The location for the TA2 was changed eventually to WF17 emergency siren pole, some 100 yards south of the original location. First Quarter data for TK2 was also lost due to a damaged dosimetry badge.
Water Sample Surface water samples composited during January and February failed to meet detection limits for certain nuclides, due to delay in analysis caused by problems experienced with the gamma spectroscopy system. Surface water sample up-stream (SWU), and drinking water (DW) samples (non-tech. spec) failed to meet LLD's for I-131, and La-140. First quarter groundwater samples also failed to meet LLD requirements for La-140. The reported activities and required LLD's are as follows:
Water Sample 1-131 LA-140 Location (15 pCi/l LLD) (15 pCi/l LLD)
SWU(1/94) <16.1 pCi/l DW(1/94) <31.4 pCill DW(2/94) <15.4 pCi/l <17.1 pCi/l WD(1stO) <16.1 pCi/l WU(1stQ) <16.0 pCi/l A weekly composite sample for the second week of January taken from the discharge line (DL) was lost due to breakage of the glass sample container. Thus, the January composite sample for the discharge line was short one weekly aliquot.
RBS began implementing gamma spectroscopy hardware and software upgrades during 1993. These upgrades update the spectroscopy technology and correct problems with computer interface reliability, which caused the analytical delays and missed LLDs during 1993 and 1994. The new hardware and software upgrades began j operation in October,1994.
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RIVER BEND STATION I RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT FOR 1994 l l
TABLE 2 l
l RESULTS OF LAND USE CENSUS Sector Nearest Range Nearest Range Nearest Range Nearest Range j Residence (km) Garden (km) Dairy (km) Meat Animal (km)
A (N) Jones 1.8 Jones 1.8 - -
Daniel, H. 3.0 B (NNE) Dreher 1.6 Harvey 1.8 - -
Harvey 1.8 C (NE) Magee 1.5 Magee 1.5 - - Daniel, H. 1.7 D (ENE) ' Daniel, E.1 1.6 Daniel, E.l. 1.6 - - Daniel, E.I. 1.2 E (E) Bickham 2.2 Bickham 2.2 - - Daniel, E.1. 1.2 F (ESE) Shelton 3.4 Eisworth 3.6 - - Daniel, E.1. 1.2 G (SE) Mills 6.6 Mills 6.6 - -
Bickham 3.5 2
H (SSE) Koffman 1.7 Koffman 1.7 - - Daniel, E.1. 3.9 J (S) Bliss 1.8 Bliss 1.8 - -
Daniel, E.I. 3.5 K (SSW) Guillory 7.4 'Guillory 7.4 - - Daniel, E.1. 3.5 L (SW) - - - - - - Bergeron 4.6 M (WSW) - - - - - -
Langols 5.0 N (W) Lacost 6.1 - - - -
Langols 5.0 P (WNW) Hermann 3.4 Site #1 0.96 - -
Hardovin 7.4 Q (NW) Davis 1.3 Site #2 1.07 - -
Cole 1.3 R (NNW) Young 1.7 Cummings 3.7 - -
Vessel 3.0 NOTES:
(1) Further resident at 1.6 km compared to 1.4 km in the 1993 census.
(2) Garden at 1.7 km, compared to no garden in the 1993 census.
(3) Garden at 7.4 km, compared to no garden in the 1993 census.
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RIVER BEND STATION RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT FOR 1994 TABLE 3 USEPA INTERCOMPARISON (CROSS-CHECK) PROGRAM PARTICIPATION RESULTS Sample Type Date Analysis USEPA RBS RBS RBS Averaoe (units) "Known" Value, Value N-DEV2 N-RANGE 3
ResuR' gFgg 08/26/94 Beta 56.00 t 17.3 61.0 +0.87 0.118 590827.23 Cs-137 15 0 t 8.7 13 00 -0.69 0.709 10.00 i 1.62 Milk' 09/30/94 l-131 75.00 t 13.9 75.67 0.14 0.443 74.89 i 5.58 Cs-137 59.0028.7 61.67 +0.92 0.354 62.39 i 3.72 K (nat) 1715.00 i 149 2 1853 0 +2.78 0.433 1700.90 i 109.0 gtg 01/28/94 Beta 62.00 2 17.3 26 33' -6.18' O.354 56.14 i 14.15 02/04/94 1-131 119 00 1 20.8 119.33 0 05 0246 120.99 1 10.18 03/04/94 H-3 4936 i 857.1 4372 -1.98 0.124 4844.97 i 477.67 04/19/94 Beta 117.00 i 31.2 120 33 0.32 0.263 106.86 t 15.47 Co-60 20 00 i 8.7 22.67 0.92 0.118 20.12 1 1.83 Cs-134 340018.7 35.00 0.35 0.000 31.45 1 2.72 Cs-137 29.00 t 8.7 34.33 1.85 0.236 31.17 i 2.40 06/10/94 Co-60 50.0018.7 49 67 -0.12 0.118 49.77 1 3.82 Zn-65 134.00 1 22.6 144.00 1.33 0.273 140.62 i 9.58 Ru-106 252.00 1 43.4 189.00' -4 36' O.165 216.56 i 28.52 Ba-133 98.00 i 17.3 86.67 -1 96 0.059 86.46 i 8.31 Co-134 40.00 i 8.7 35.67 -1.50 0.118 36.99 i 3.14 Cs-137 49.00 i 8.7 51.33 0.81 0.354 52.38 i 3.61 07/22/94 Beta 10.00 i 8.7 14 00 1.39 0.473 14.90 t 3.70 08/05/94 H-3 9951 1 1726.3 8547.6 -2.44 0.129 9651.86 i 696.62 10/07/94 1-131 79001139 78.00 -0.22 0.148 79 89 i 6.79 10/18/94 Beta 142 i 36 4 125.57 -2.01 0.113 125.57 113.92 Co-60 40.00 t 8.7 41.67 0.58 0.236 39 43 12.65 Cs-134 20 00 i 8.7 18.33 -0.58 0.118 18.45 11.78 Cs-137 390028.7 45.00 2.08 0236 41.73 12.66 10/28/94 Beta 2300i87 24.33 0.46 0.591 27.16 2 5.23 11/04/94 CcMK) 59 00 i 8.7 57.00 -O 69 0 000 58.87 i 4.59 Zn-65 100.00 i 17.3 102 67 0.46 0 059 104.68 i 7.95 Ru-106 deleted from study Ba-133 l 73 00 12.1 71.00 -0.49 0.169 70 81 i 6.13 {
Cs-134 24.00 i 8.7 21.00 -1.04 0 236 22.95 1 2.27 1 Cs-137 4900287 52.00 1.04 0.709 51.92 1 3.61 NOTES.
USEPA "known" values are listed with a range reflecting control (3 sigma) timits. ,
(1) The normaltzed deviation from the "known"value is computed (2) by USEPA from the de i t v a ion and the standard error of the mean; 2.000 is the I
waming hmit and 23 000 is the control hmit.
(3)warning The normahzed range hmdt and +3 000 is computed is 'he control hmit, by USEPA from the mean range, the control kmft, and the standard error of the range; (4
(5) The grand average of all parocipants' resutts (excludi.Tg outliers) is hsted with the expenmental (calculated) sigma for all laboratories
) USEPA discontinued the cross < heck media Food"in 1989. Although milk samphng and analysis by RBS is not performed the ,
' units for the nuchdes 1 131 and Cs-137 are pCi/ liter, and for natural potassium is mg'lsamples of (6) The resutts reported to USEPA were out of the control hmits; refer to the discussion on program exceptions.
14
RIVER BEND STATION RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT FOR 1994 TABLE 4 MONITORING PROGRAM EXCEPTIONS SAMPLE TYPE PERIOD LOCATION EXCEPTION / REASON Air Particulate 2/22-3/2/94 AR1 About 2% of weekly sample volume lost due to power outage of unknown reason.
and Radioiodine 6/7-6/13/94 AP1 100% weekly sample volume lost due to equipment malfunction.
6/13-6/20S4 AB1*,AKS*,AP1, About 11%,69%,14%, and 3% respective sample volumes lost due to weather related AHS* power outages.
6/20-6/29/94 AB1*, AKS* About 2% sample volume lost due to power outage of unknown reason.
7/5 -7/12S4 AA1, AB1*, AR1, About 1% sample volume lost due to power outage of unknown reason.
AKS*, API 9/19 - 9/26/94 AKS* 100% weekly sample volume lost due to ground fault receptacle / weather related.
8/B - 12/5/94 AHS* Sample volume losses due to a series of power outages caused during the remodeling of the building on North Blvd (sampler located on roof of building)
TLD's 1st & 2nd Qtr. TA2 No data for these penods at this location: TLD badge was missing / stolen.
1st Otr. TK2 Badge #537 element slide housing severty damaged-removed from service.
Water Samples 1!94 DL, DW*, SWU Sample analysrs failed to meet all required LLDs; Delay in sample counting due to counting instrument and computer system problems.
2/94 DW* Sample analysis failed to rneet all required LLD's ; delay in sample counting due to counting instrument and computer system problems.
1st Qtr 94 GU Sample analysis failed to meet all required LLD's ; delay in sample counting due to counting instrument and computer system problems.
EPA Cross 1/28S4 Gross Beta in Results exceeded control limits of study; believed to be caused by loss of sample during Checks Water Study final stages of preparation.
7/22/94 Gross Beta in Samples not analyzed in time to be included in study publication due to equipment Water Study problems with model 2404 alpha-beta analyzer, 6/10/94 Gamma in Water Ru-106 results exceeded controllimits of study; USEPA is evaluating Ru-106 standard Study (Ru-106) used for cross-check samples Note:
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RIVER BEND STATION RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT FOR 1994 USEPA Cross-check:
The RBS results of the USEPA gross beta-in-water study of 1/28/94 were outside the control limits of the study.
RBS reported results averaging 26.3 pCi/l, while the control INits were 44.7 to 79.3 pCi/l, with a known value of 62.0 pCi/l. Instrument quality control data and worksheet calculations e. tere reviewed with no indication of a problem. Five other beta-in-water studies were prepared and analyzed during the year with all results within the control limits for the respective study; only one result was biased low. RBS wil; implement microwave digestion for water samples during 1995, but the cause of the low bias results is thought to be due from the loss of sample during the later stages of sample preparation.
Due to problems with the gross beta analyzer, the gross beta-in-water study of 7/22/94 sample results were not submitted in time to be included in the study publication. The sample was analyzed on 8/26/94 and results were within all controllimits. Statistical calculations were performed in house and included in the intercomparison study program result records.
The Ru-106 results of the USEPA gamma-in-water study of 6/10/94 was below the controllimits of the study.
RBS expenenced the same problems with the gamma-in-water studies in 1993, and contacted the Radioanalysis Branch, EPA EMSL-LV to find that many participants in the program had been bias low over the last three gamma-in-water studies in the Ru-106 analysis. The standard used to prepare the study samples was under investigation.
Until problems with the standard are satisfactorily resolved, the Ru-106 will be deleted from future studies.
3.0 INTERPRETATION OF REMP RESULTS 3.1 Summary of Operational REMP Results Monitoring results for the exposure pathwap 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 Exposure Pathway - Measurements u? sadioiodine and other gamma-emitters were all below their respective LLDs -- that is, " undetectable" at the required analytical sensitivities. Noble gases (Xe-133, Xe-135) were detected in air samples periodically throughout the year. Cs-137 was measured in charcoal cartridges at indicator and control locations, presumably traces of Chernobyl fallout. Gross beta activities averaged 0.019 1 pCi/m' at indicator locations and 0.018 pCi/m at control locations.
3.1.2 Direct Exposure Pathway - Quarterly exposures averaged 12.5 mR total at indicator locations and 12.5 mR total at control locations. j i
16
RIVER BEND STATION RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT FOR 1994 3.1.3 Watert>ome Exposure Pathway - No gamma-emitters were measured in surface water or in drinking water at 1:vels approaching the Technical Specification LLDs. The gamma emitters Mn-54, Co-58, Fe-59, Co-60, Cr-51, Zn-65, La-140, Nb-95, Zr-95, Ba-140, and 1-131 were measured in monthly composite samples from the CWS discharge line at concentrations between 1.67 and 586 picocuries per liter. Gross beta activities in surface water averaged 106 pCill in the discharge line and from 2.48 to 9.05 pCi/l at all other stations. Tritium (H-3) activities in surface water averaged 10,236 pCi/l in the discharge line and were below detection limits at all other locations.
Gross beta activities averaged 3.92 pCl/l in the downgradient WD (indicator), and 4.51 pCi/l in upgradient WU (control) groundwater. Besides naturally-occurring gamma emitters, Cs-137 was measured in Mississippi River shoreline up-stream sediment at 21.6 pCi/kg dry; and not measured in down-stream sediment. As in the case of the airborne Cs-137 activity, this slightly elevated level (relative to baseline conditions) is probably attributable to the 1986 incident at Chemobyl, Russia.
3.1.4 incestion Exposure Pathway - Specific activities for radiciodine were below the required LLD in the ingestion pathway monitoring media during 1994. Only naturally-occurring gamma emitters was measured in broadleaf vegetation and fish in 1994.
17
RIVER BEND STATION 1 RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT FOR 1994 I l
l TABLE 5 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM
SUMMARY
(Page 1 of 4)
River Bend Station Docket Number: 50-458 West Feliciana Parish, Louisiana Reporting Period 1/1/94 tD 12/31/94 l
j Medium or Type and Totaf Lower M Indicator Location with Highest Control Number of Pathway Number of Limn of Statipns Mean Annual Mean Locationg Nonroutine Sampled (Unit Anatyses Optaction (f) Range Mean (f) Reported of Measure) Performed (LLD) Ran9e Results Name Mean (f)*
Distance / Direction Range 1 i Aar Parte ate Gross Deta 0.01 0 019 AR1 0.020 0.018 0 1 (pCi/m (464) (310/310) 0 8 km NNW (52/52) (154/154) i O.0001- 0 041 0 004 - 0.007- 0.042 l O.030
]
K-40' None 0401 AHS 1.040 0.368 0 l' (464) Required (310/310) 40 km SSE (50/50) (154/154)
O.230 0.974 0.212 - 0.208 1.040 1.160 Cs-134 0.05 All < LLD f 1 M<RD 0 (36)
{
Cs-137 0.06 M < LLD All < LLD 0 (36)
+ +
Air Radioi me L131 0.07 M < LLD M < LLD 0 (pCl m (464)
Direct (TLD)* Gamma 12 45 TB2 14.75 (4/4) 12.48 (24/24) 0 Quartetty l (149/149) 5.0 km NNE 13.25- 10.07 16.28 (mR total) (173) I 8.80 16.83 16 83 Surface Water H-3 3000 10236(4/8) DL 10236(4/4) M < LLD 0 (pCilliter) (24) 4306 - 17192 4306 -
17192 Mn-54 15 93.2 (12/24) DL 93.2 M < LLD 0 (36) 19.3 418 (12/12) 19.3-418
- v. .,
Co-58 15 13.4 (12/24) DL 13 4 M < LLD 0 (36) 2.69 -57.5 (12/12) 2.69 57.5
+ +
Fe-59 30 26.1 (11/24) DL 26.1 M < LLD 0 (36) 7.85 76.2 (11/12) 7.85 - 76.2 Co-60 15 153 (13.*24) DL 153 0.59 (1/12) 0 (36) 0.57 586 12/1 suu m 2n-65 30 7.38 (8/24) DL 7.38 (8/12) All < LLD 0 (36) 1.67-16 5 1.67-16 5 Nb-95 15 6.38(914) DL 6.38 (9/12) M < LLD 0 (36) 2.09 15.9 2.09-15 9
+ .
Zr 95 30 5 12 (2/24) DL 5.12 (2/12) M < LLD 0 (36) 3.74-6.50 3.74 4.50 F131 15 16 8(6/24) DL f 16 8 (6/12) M < LLD 0 (36) i 11.7-29 7 11.7- 29.7
{
, Cs-134 15 ALL=LLD M < LLD 0 l l ( *)
+ 4 4 l i Cs-137 18 1.55 (2/24) DL 1 55 (2/12) M < LLD 0
( (36) 1.03-2 06 1.03- 2.06 1
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I RIVER BEND STATION !
RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT FOR 1994 l TABLE S RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM
SUMMARY
(Page 2 of 4)
River Bend Station Docket Number: 50-458 West Feliciana Parish, Louisiana Reporting Period 1/1/94 to 12/31/94 Medium or Type and Total Lower All Indicator Location with Highest Control Number of Pathway Number of Limit of Statipns Mean Annual Mean Locationy Nonroutine Sampled (Unit Analyses Dytection (f) Range Mean (f) Reported of Measure) Performed (LLD) Range Results Name Mean (f)*
Distance /Directum Range Surface Water Da-140 60 33.3 (2/24) DL 33.3 (2/12) All e LLD 0 (pCi/ider) (36) 25.7-40.9 25.7-40.9
+ V +
La-140 15 20 4 (5/24) DL All
- LLD 0 (36) 7.94 - 36 6 20.4 (5/12) l 7.94 - 36.6 Gross Beta 4 55 8(20/24) DL 3.98 (7/12) 0 (36) j 3.03 384 2.48- 7.58 Groundwater H-3 3000 173 (1/8) WU 336 (1/4) 336 (1/4) 0 (pCs/lder) (8) 470 m NNE
+ + +
Mn-54 l 15 All < LLD All
- LLD 0 (8)
]
Co-58 15 All < LLD All < LLD 0 (8) 7 Fe-59 30 i All
- L D All < LLD 0 (8) l
+- 4 +
Co40 15 All < LLD All e LLD 0 (8)
Zn-65 30 All < LLO All < LLD 0 (8)
+ +-
Nb-95 15 All < LLD All < LLD 0 (8)
, 4 , ,
Zr-95 30 All < LLD All < LLD 0 (8) l y
1-131 15 All < LLD All < LLD 0 (8)
+- + +
Cs-134 15 All < LLD All < LLD 0 (8)
Cs-137 18 ALL<LLD) All < LLD 0 (8)
Ba-140 60 All < LLD
('
f All < LLD 0 7
La-140 15 ] All < LLD All < LLD 0 (8) l Gross Beta 4 3 92 (2/4) WU 4 51 (1/4) 4.51 (1/4) 0 (8) l 3.19 4.64 470 m NNE
+ 4... .- +
Dr6nking Water' 43 3000 176 (1/4) DW 176 (1/4) All < LLD 0 (pCvitter) (4) 53 9 km dnstream Mn-54 15 I All < LLD All a LLD 0
' +. .
Co-58 15 All < LLD All < LLD 0
(' ' ,. 4 , +
Fe-59 30 All < LLD All < LLD 0 (12) 19 i
I
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RIVER BEND STATION RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT FOR 1994 TABLE 5 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM
SUMMARY
(Page 3 of 4)
River Bend Station Docket Number 50-458 West Feliciana Parish, Louisiana Reporting Period 1/1/94 to 12/31/94 Medium or Type and Total Lower Allindlcator Location with Highest Control Number of Pathway Number of Limit of Statipns Mean Annual Mean Locationy Nonroutin Sampled (Unit Analyses Detection' (f) Range Mean (f) e Reported of Measure) Performed (LLD) Range Results Name Mean (f)*
Distance / Direction Range r Z 5 30 All < LLD All < LLD 0
+- + + +
Co40 15 0 50 (1/12) SWU 4 0.59 (1/4) 0.59 (1/4) 0 (12) km upstream
+ +
y Nb-95 15 M =LLD l All < LLD 0 (12) ! }
Zr-95 l 30 M =LLD M < LLD 0
<'2) t .-. . .
B-131 15 M < LLD All < LLD 0 (12)
Cs-134 15 M < LLD M < LLD 0 (12)
+.
Cs-137 18 All < LLD M < LLD 0 (12)
+- +- + + +
Ba-140 60 M < LLD M < LLD 0 (12)
T~
La-140 15 M < LLD i M < LLD 0 (12) l
+ + + + y Gross Beta 4 5 30(10/12) DW 3.98 (7/12) l 0 (12) 264 905 53 9 km dnstream 5.30905 2.64 (10/2) l 2.48 - 7.58 l Sediment
- K40' None 11962 (2/2) km ream 12968 (2/2) l 12968(2/2) 0 (pCi/kg dry) (4) Required 11640-12283 1148014456 l 11480-14456 Cs-134 150 M < LLD M < LLD 0 (4)
-+ +- + +
Cs-137 180 ALL = LLD SEDO 21 6 (1/2) 21.6 (1/2) 0 (4) 4 km upstream F6sMnvertebrate K-40' None 3443 (E1D 3443 (6/6) 3083(6/6) 0 (pCilkg wet) (12) Required 1887 3575 4 km dnstream 1887 3575 1758- 4506
& +
Mn-54 130 M =LLD M < LLD 0 (12)
+ + + +-
Co-58 130 All < LLD All < LLD 0 (12)
Fe-59 260 M < LLD M < LLD 0 (12)
+- +- + +
CM4 130 M < LLD M < LLD 0 (12)
+ y p-Zn-65 260 M = LLD All < LLD 0 (12) l, Cs-134 130 All < LLD M < LLO O (12)
+ +- + + 4-Cs 137 160 All < LLO M < LLD 0 (12) 20 l
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1 RIVER BEND STATION RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT FOR 1994 1
1 1
TABLE 5 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM
SUMMARY
(Page 4 of 4)
River Bend Station Docket Number 50-458 West Feliciana Parish, Louisiana Reporting Period 1/1/94 to 12/31/94 Medium or Type and Total Lower i All indicator Locat'on wtth Highest Control Number of Pathway Number of Limit of Statipns Mean Annual Mean Locat6ony Nonroutine Sampled (unit Analyses Optection (f) Range Mean (f) Reported of Measure) Performed (LLD) Range Results Name Mean (f)*
Distance / Direction Range 8
Broadleaf Be-7 None 322 (46/72) OOC 395 395(24/36) N/A Vegetaten (108) Required 87-2842 35 km NW (24/36) 122-1730 (pCvkg wet) 122 1730 K-40' None 3978 (71/72) G2 3996 3878 (36/36) N/A (108) Required 255 - 9031 1.1 km NW (35/36) 653 - 9184 255 - 9031
, l131 60 All < LLD All < LLD 0
('o") . t . .
Cs-134 60 All e LLD All < LLD 0
(' o') l 1 . - +
Cs.137 80 AJt
(1) Lower Limit of Detection (LLD) as defined in RBS Technical Specifications (NUREG-1172).
(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 reaGy distinguished, naturally occurring nuclides are included 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 identification. l (4) Quarterly gamma exposure estimdes are " normalized" to a 90-day quarter.
(5) The upstream surface water sampliig location, though not required, is used as a " control" for drinking water comparisons.
(6) An upstream sediment sampling location, though not required, is used as a " control" for shoreline sediment comparisons. Cesium-137 was detected at both locations, presumably as a consequence of runoff from areas affected by fallout from the accident at Chernobyl, Russia, in 1986.
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1 RIVER BEND STATION RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT FOR 1994 3.20cmparison of Operational and Baseline REMP Results Radiciodine and other gamma emitters in the airborne exposure pathway were not measured at levels above the required LLDs during 1994. Gross beta activities on air particulate filters averaged 0.019 pCl/m at indicator and 0.018 pCi/m at control locations in 1994, 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 1994 net average readings for quarterly TLDs from both indicator and control locations 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 waterbome exposure pathway, average activities analyzed for required gamma-emitting nuclides were measured below the RBS Technical Specification LLDs during 1994 as had been the case during the preoperational phase (Appendix B). Gross beta and tritium levels in water are compared below:
WATERBORNE AVERAGE GROSS BETA (pCi/l)
Location Pre-Operatvanal 1989 1990 1991 1992 1993 1994 surface Water, Upstream (4 km) 7.80 7.79 9.75 4 55 5.15 6.52 3 98 RBs Discharge Line N/A 32 05 40.39 33.90 143.55 45.60 106 surface Water, Downstream (4 km) 810 7.41 9 52 5 23 5 59 7.6o 5 37 Dnnking Water (Baton Rouge, lH-10 bndge) 6 80 8 23 9 47 5 05 5 01 5 65 5.30 Upgradient groundwater 6 00 3 61 6 03 <2 91 <3 02 2 31 4 51 Downgradient groundwater 4 00 3 44 4.73 3.17 3 04 2.78 3.92 WATERBORNE AVERAGE TRITIUM (pCi/l)
Location Pre-Operational 1989 1990 1991 1992 1993 1994 surface Water, Upstream (4 km) <3000 <554 <209 <371 <355 <362 <324 RBS Discharge Line N/A 3469 20452 7047 5744 4962 10236 surface Water, Downstream (4 km) <3000 <554 <209 <374 <364 <362 158 Dnnking Water (Baton Rouge. IH-10 bndge) <3000 <557 <210 188 <360 <373 176 Upgradient groundwater <3000 <881 <211 <366 <352 <372 336 Downgradient groundwater <3000 <872 <207 <363 <348 <373 173 Gross beta activities in the discharge line samples returned to normal in 1993 after the elevated levels of 1992 due to outage decontamination activities. As observed in previous years, the annual average gross beta activity for the control location (SWU) averaged the same as that for the indicator location (SWD). The gross beta activity levels in the discharge line sample (DL) seemingly reflect the normal cycles of concentration at which the station cooling towers are operated.
22 1
RIVER BEND STATION RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT FOR 1994 Tritium activities in the discharge line increased on average from 1993, reflecting the releases already noted in the 1994 Annual Radioactive Effluent Release Report (see also Table 6). These tritium levels reflect a decrease from 1990 due to removal of failed fuel, but represent an increase compared to years prior to 1990, due to more efficient radioactive wastewater treatment and reuse (e.g., boiler makeup). In the RBS boiler-reactor, tritium is produced by temary fission of the reactor fuel (*U), although only a small fraction of that tritium would diffuse 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 - boron). The particulates (metals and salts) are removed in this treatment leaving the tritium behind as water (e.g., [3H-O 'H]). When this water is reused as boiler makeup, the tritium concentration in the water increases.
In the ingestion exposure pathway, no gamma emitting nuclides were measured above LLDs during 1994, and there appear to have been no increases in radionuclide concentrations attributable to RBS operation in food / forage media over baseline levels (Appendix B). Naturally-occurring K-40 was measured at an average of 3978 pCi/kg in indicator vegetation and at an average of 3878 pCi/kg in control vegetation in 1994, roughly the same levels encountered prior to RBS operation (Appendix B). Another natural nuclide, Be-7, averaged 322 and 395 pCi/kg in indicator and control vegetation samples, respectively, during 1994. Although presumably present, Be-7 was not quantified during the preoperational phase for comparison.
3.3 Comparison of REMP Results with Operatina Controls The only measurable increases in concentrations of radionuclides or levels of radiation, attributable to plant operation, in the vicinity of RBS during 1994 appear to have been the expected low levels in the liquid Discharge Line. The indicator vs. control comparisons for airbome gross beta activity (Section 3.1.1; Table 5 and Appendix A) corroborate the reports of limited or no releases of particulates or radiciodine in 1994. The 1994 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 are listed in Table 6 along with the corresponding Discharge Line analytical data for those nuclides which were measured by the REMP during 1994. 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.
23
RIVER BEND STATION RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT FOR 1994 TABLE 6
SUMMARY
COMPARISON OF LIQUID EFFLUENT QUANTITIESIACTIVITIES' AND REMP DISCHARGE LINE MONITORING RESULTS Quantities Released 1st Quarter 1994 2nd Quarter 1994 3rd Quarter 1994 4th Quarter 1994 Total for 1994 Liters of Effluent 5.10E+6 1.09E+7 7.13E+6 6.90E+6 3.00E+7 Liters of Dilution 1.02E+9 1.08E+9 9.71 E+8 8.33E+8 3.90E+9 Curies of H-3 167E+1 3.54E+1 7.18E+0 5.60E+0 1.62E+1 Curies of Cr-51 1.03E-1 6.16E-2 5.95E-2 1.33E-1 3.57E-1 Curies of Mn-54 2.70E-2 9.79E-2 6.43E-2 2.49E-1 4.38E-1 Curies of Co-58 5.03E-3 1.44E-2 6.87E-3 3.52E-2 6.15E-2 Curies of Fe-59 1.17E-2 4.07E-2 1.28E-2 5.20E 2 1.17E-1 Curies of Co-60 4.42E-2 1.88E-1 1.05E-1 3.51 E-1 6.88E-1 Cunes of Zn45 2.62E-3 8 66E-3 4 32E-3 1.42E-2 2.98E-2 Curies of Nb-95 2.13E-3 5 52E-3 2.00E-3 5.78E-3 1.54E-2 Cunes of l-131 9.75E-3 5.87E-3 4 41 E-3 6.65E-3 2.67E-2 Curies of La-140 1.32E-1 2.74E-2 6.46E-2 8.97E-2 3.14E-1 Predicted (Extrapolated) Specific Activities (pCill) versus 1994 REMP Measured Nuclide 1st Quarter 1994 2nd Quarter 1994 3rd Quarter 1994 4th Quarter 1994 Mean for 1994 1994 REMP Mean (Range)
H-3 16291 32450 7341 6668 15688 10236(3995-17192)
Cr-51 101 56 5 60.8 158 94.1 101(10.9 252)
Mn-54 26.3 89 7 65.7 296 119 93.2(19.3-418)
Co-58 4 91 13 2 7.02 41.9 16.8 13.4 (2.69 - 57.5)
Fe-59 11 4 37.3 13.1 61.9 30.9 26.1 (7.85- 76.2)
CW 43 1 172 107 418 185 153 (30.7 - 586)
Zn-65 2.56 7.94 4 42 16.9 7.96 7.38(1.67-16.5)
Nb-95 2.08 5.06 2.04 6.88 4 02 6.38(2.09-15.9) 1-131 9 51 5 38 4 51 7.92 6.83 16 8(11.7-29.7)
La-140 129 25.1 66.0 107 81.8 20.4 (7.94 -36.6) 1 l
NOTES:
(1) Efnuent quantities and nuclide actmties excerpted from the 1994 Annual Radcactive Effluent Release report.
l 24
[
RIVER BEND STATION RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT FOR 1994 !
P APPENDIX A Listinos of 1994 REMP Results The following tabtes list individual analytical results and direct measurements of radiation (TLD exposures) recorded by the Radiological Environmental Monitoring Program (REMP) during 1994. Concentrations measured for certain 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 because of the complexities and uncertainties of specific identifications.
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25
t RIVER BEND STATION RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT FOR 1994 Air Particulate Filter Gross Beta Activity (E-2 pCi/m 8)
WEEK INDICATOR LOCATIONS CONTROL LOCATIONS ENDING AA1 AB1 AR1 AKS AP1 AQS2 ALC AHS AGS 01/04/94 1.50 2.03 2.30 1.67 1.33 1.47 2.05 2.13 2.12 01/11/94 2.03 2.26 2.65 2.47 1.67 1.90 2.86 2.30 2.55 01/17/94 1.64 2.31 2.16 1.78 1.44 1.57 2.00 2.27 2.34 01/26/94 2.16 2.14 2.42 2.23 1.72 1.51 2.68 2.44 2.48 02/01/94 1.85 1.90 2.31 1.75 1.29 1.26 2.17 2.26 2.03 02/08/94 1.92 1.97 2.12 2.46 1.62 1.38 1.93 2.54 2.15 02/14/94 0.90 1.01 1.12 1.00 0.80 0.78 1.08 0.97 1.17 02/22/94 0.84 0.01 1.23 0.99 0.67 0.80 0.88 1.16 1.25 03/02/94 1.49 1.94 1.96 1.53 1.34 1.42 1.77 2.06 2.05 03/07/94 2.04 2.00 1.99 2.17 1.34 1.47 1.73 2.15 2.04 03/14/94 1.64 1.92 1.80 1.58 1.12 1.39 1.70 2.07 1.92 03/22/94 1.40 1.74 1.79 1.50 0.99 0.98 1.58 1.67 1.61 03/31/94 1.60 1.73 1.96 2.27 2.07 2.18 1.74 1.92 1.72 04/05/94 1.81 1.96 2.29 2.70 2.37 1.67 1.66 2.06 1.96 04/12/94 1.41 1.45 1.64 1.74 2.00 1.75 1.12 1.77 1.48 04/18/94 1.23 1.10 1.35 1.83 1.47 1.60 0.98 1.52 1.13 04/25/94 1.07 1.29 1.49 1.65 1.78 1.91 1.00 1.72 1.16 05/02/94 1.11 1.20 1.26 1.32 1.42 1.25 0.82 1.22 0.90 05/10/94 1.38 1.48 1.77 1.78 1.69 1.57 1.09 1.81 1.43 05/16/94 2.26 1.81 2.31 2.61 2.58 2.42 1.47 2.38 1.99 05/23/94 1.37 1.56 1.79 1.78 1.97 1.60 0.95 1.65 1.26 06/01/94 1.16 1.33 1.74 1.79 1.74 1.84 0.95 1.64 1.27 06/07/94 0.82 0.85 1.21 1.24 0.95 1.06 0.65 1.37 0.82 06/13/94 0.94 1.18 1.27 1.71 1.68 0.86 1.67 1.05 06/20/94 1.26 1.32 1.63 2.64 1.37 1.54 0.94 1.71 1.23 ,
06/29/94 1.91 1.94 2.44 2.43 2.33 2.45 1.18 2.43 1.61 07/05/94 1.91 1.84 2.02 2.02 1.91 1.79 1.14 1.81 1.39 07/12/94 1.14 1.19 1.19 1.19 1.09 1.01 0.68 1.09 0.71 07/19/94 1.45 1.49 0.35 1.65 1.72 1.71 1.10 1.71 1.28 07/26/94 1.83 2.n2 1.88 1.90 2.20 2.00 1.24 2.07 1.49 08/01/94 2.31 2.09 2.31 2.42 2.58 2.37 1.46 2.14 1.64 08/08/94 1.72 1.22 1.38 1.80 1.60 1.81 1.15 1.68 1.20 08/16/94 2.52 2.32 2.57 2.71 2.38 2.45 1.77 2.92 1.62 08/23/94 2.48 2.58 2.62 2.92 2.84 2.62 1.43 1.85 08/31/94 1.96 1.54 1.92 1.93 1.95 1.61 1.21 1.50 09/07/94 1.97 2.36 2.45 2.22 2.53 2.45 1.36 1.73 1.60 09/13/94 2.25 2.10 2.19 2.21 2.54 2.29 1.40 2.00 1.83 09/19/94 2.10 2.53 2.41 2.37 2.78 2.30 1,55 1.96 1.92 09/26/94 2.20 2.98 2.60 3.12 3.07 2.16 2.20 2.26 10/04/94 3.18 3.63 3.13 3.06 3.48 4.08 2.34 2.20 3.63 10/11/94 3.22 2.79 2.70 2.85 2.91 2.94 2.75 3.42 2.96 10/17/94 0.09 1.04 1.06 1.12 1.20 1.22 1.18 0.93 1.20 10/24/94 1.68 1.51 1.39 1.45 1.86 1.60 1.29 1.40 1.67 10/31/94 2.53 2.72 2.33 2.61 3.27 2.56 2.33 4.16 2.84 11/07/94 2.04 2.07 2.24 1.80 2.12 2.20 1.71 2.00 1.98 11/14/94 1.40 1.52 1.71 1.41 1.45 1.66 1.36 1.70 1.74 .
11/21/94 2.22 2.40 2.19 1.99 2.39 1,91 1.92 1.94 1.95 !
11/28/94 2.47 3.04 2.48 2.39 3.27 2.81 2.58 2.81 2.92 i 12/05/94 2.40 2.60 2.28 1.97 2.67 2.43 2.08 2.39 2.90 '
12/12/94 1.60 1.65 1.50 1.54 1.90 1.60 1.30 1.43 1.78 12/19/94 2.24 2.18 2.82 2.39 3.30 3.29 2.57 2.97 2.90 12/27/94 2.55 2.20 3.03 2.78 2.09 4.13 3.17 3.37 3.84 Note: Actrvtties shown are values actually measured 26
l RIVER BEND STATION RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT FOR 1994 Ii Air Particulate Filter Composite Activity (E-2 pCi/m3)
LOCATION COLLECTION DATE PERIOD CS-134 CS-137 AA1 02/15/94 1ST QTR < 0.29 <0.25 AB1 02/15/94 < 0.28 < 0.14 AR1 02/15/94 < 0.29 < 0.25 AKS 02/15/94 < 0.25 <0.28 AP1 02/15/94 < 0.24 < 0.24 AQS2 02/15/94 < 0.26 <0.23 AHS 02/15/94 < 0.27 <0.27 AGS 02/15/94 < 0.28 < 0.25 ALC 02/15/94 < 0.21 < 0.25 AA1 05/14/94 2ND QTR < 0.25 < 0.31 AB1 05/14/94 < 0.27 <0.23 AR1 05/14/94 < 0.43 <0.47 AKS 05/14/94 < 0.30 < 0.31 AP1 05/14/94 <0.49 <0.40 AQS2 05/14/94 <0.28 <0.28 ALC 05/14/94 < 0.25 < 0.34 AHS 05/14/94 < 0.26 < 0.31 AGS 05/14/94 < 0.25 <0.30 AA1 08/12/94 3RD QTR < 0.36 < 0.26 AB1 08/12/94 < 0.38 <0.40 AR1 08/12/94 < 0.26 <0.46 AKS 08/12/94 <0.43 < 0.34 AP1 08/12/94 < 0.41 < 0.31 AQS2 08/12/94 < 011 < 0.48 ALC 08/12/94 <0.33 < 0.31 AHS 08/12/94 <0.38 < 0.44 AGS 08/12/94 < 0.47 <0.37 AA1 11/11/94 4TH QTR < 0.42 < 0.32 AB1 11/11/94 < 0.26 <0.37 AR1 11/11/94 < 0.33 < 0.49 AKS 11/11/94 < 0.52 <0.29 AP1 11/11/94 <0.49 <0.46 AQS2 11/11/94 < 0.37 < 0.12 ALC 11/11/94 < 0.11 <0.42 AHS 11/11/94 < 0.43 <0.49 AGS 11/11/94 < 0.29 < 0.41 Note: ActMties indicated are minimum detectible activities (MDA) under the particular conditions of analyses.
Samples counted are composed of thirteen filters from each location composited each quarter.
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RIVER BEND STATION l l
RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT FOR 1994 )
Charcoal Cartridge Potassium-40 Activity (E-2 pC1/m') by Location WEEK INDICATOR LOCATIONS CONTROL LOCATIONS ENDING AA1 ABl AR1 AKS APl AQS2 ALC AHS AGS 01/04/94 46.40 43.80 47.50 46.00 75.30 33.70 54.80 29.60 67.60 01/11/94 33.60 27.20 60.10 42.90 50.60 36.40 77.50 01/17/94 67.20 53.90 64.50 55.10 58.50 47.70 38.80 47.70 52.60 01/26/94 38.40 31.00 30.00 36.00 41.70 30.30 30.50 39.30 41.40 02/01/94 62.90 68.00 45.00 43.50 55.30 59.50 41.30 31.20 58.20 02/08/94 63.50 53.20 41.70 64.80 42.20 35.90 35.70 44.20 02/14/94 40.80 64.50 66.10 55.70 42.70 63.60 64.40 50.40 92.30 02/22/94 33.60 44.20 42.90 4.33 30.50 39.80 29.20 30.80 03/02/94 37.00 51.40 32.40 52.00 36.90 36.20 27.10 50.30 03/07/94 67.70 66.10 53.10 55.60 42.90 59.40 49.30 61.30 71.20 03/14/94 65.90 40.20 48.40 69.80 38.00 40.80 54.00 73.70 03/22/94 43.30 45.60 44.90 45.20 33.80 30.90 53.20 I
03/31/94 34.60 34.60 21.40 41.40 28.00 24.40 21.00 47.60 04/05/94 56.40 66.70 66.90 59.30 64.50 45.40 42.60 60.70 04/12/94 42.70 47.00 31.50 41.90 31.30 50.70 45.10 41.30 04/18/94 61.90 44.60 59.10 66.20 45.20 48.40 75.00 04/25/94 70.20 32.00 66.20 45.30 53.10 48.30 39.40 05/02/94 64.50 64.00 59.50 39.40 64.90 46.10 49.20 36.80 05/10/94 48.00 42.00 36.50 51.20 35.30 55.90 36.50 40.50 39".90 05/16/94 53.40 44.40 95.80 48.00 85.20 67.10 29.10 62.60 68.00 05/23/94 48.60 53.80 47.60 39.00 39.80 42.90 56.20 26.40 49.50 06/01/94 57.90 49.50 29.10 48.60 42.80 23.20 41.50 21.80 06/07/94 34.60 42.70 61.50 69.40 45.40 63.50 35.40 58.90 06/13/94 48.80 55.30 63.90 51.40 46.80 80.60 59.80 06/20/94 58.10 31.70 38.60 66.60 62.20 31.00 47.20 45.80 06/29/94 27.30 64.40 62.20 32.30 34.40 40.00 27.90 26.80 32.40 !
07/05/94 38.80 37.70 38.40 63.10 57.20 54.00 30.30 44.70 37.80 07/12/94 48.30 30.10 30.70 50.30 33.30 37.00 48.70 30.30 07/19/94 40.60 40.90 28.40 64.00 31.30 41.10 41.20 45.00 07/26/94 43.20 66.90 36.90 55.70 55.30 44.50 36.70 48.80 24.70 08/01/94 55.60 27.90 36.50 53.60 69.80 62.10 37.80 50.30 36.30 08/08/94 45.00 48.50 66.40 57.10 97.40 48.80 08/16/94 53.50 48.00 48.90 40.40 43.30 45.30 30.10 44.00 20.80 08/23/94 38.80 35.10 66.10 58.90 30.50 58.70 08/31/94 40.00 35.80 30.50 46.90 29.90 30.50 46.00 32.70 09/07/94 48.20 48.00 35.69 33.90 38.80 39.20 09/13/94 58.30 54.60 65.40 31.70 54.50 50.60 29.60 55.10 26.20 09/19/94 52.80 47.30 32.00 53.90 48.50 43.40 52.50 89.80 58.30 09/26/94 38.30 36.80 38.00 45.80 48.10 41.20 43.40 10/04/94 61.40 47.40 10/11/94 44.40 57.20 48.30 48.10 33.90 58.10 61.20 85.40 10/17/94 71.50 23.00 43.70 58.20 10/24/94 10/31/94 11/07/94 42.90 48.30 83.90 47.90 49.80 23.40 58.30 38.90 11/14/94 61.70 56.10 61.80 71.90 28.90 11/21/94 58.60 61.70 50.10 27.70 66.50 34.20 40.70 11/28/94 29.80 74.50 58.00 64.40 36.60 i 12/05/94 55.20 58.90 46.90 41.70 50.00 12/12/94 49.90 57.40 29.70 28.10 39.20 50.40 64.90 12/19/94 46.60 61.40 50.90 53.80 48.60 61.80 52.00 61.50 ,
12/27/94 45.50 44.10 58.90 36.00 62.80 l NOTE: Activibes shown are values actually measured.
I 28 l l
4
l RIVER BEND STATION l RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT FOR 1994 :
I Charcoal Cartridge Iodine-131 Activity (E-2 pCi/m')
WEEK INDICATOR LOCATION CONTROL TACATION ENDING AA1 AB1 AR1 AKS AP1 AQS2 ALC AHS AGS 01/04/94 (1.59 <1.79 <1.34 <1.60 <1.72 <1.95 <1.48 <1.80 <2.50 01/11/94 <2.63 <2.01 <3.88 <3.08 <3.19 <2.71 <2.98 <2.64 <2.06 01/17/94 <2.04 <1,88 <2.06 <1.61 <1.85 <2.12 <1.86 <1.76 <2.07 01/26/94 <1.12 <1.12 <1.43 <1.15 <1.38 <1.48 <1.15 <1.19 <1.55 02/01/94 <1.91 <1.82 <1.69 <1.87 <1.62 <1.26 <1.68 <1.83 <2.17 02/08/94 <1.71 <1.62 <1.67 <1.86 <1.45 <2.80 <2.74 <2.54 <3.46 02/14/94 <2.46 <1.94 <3.37 <2.85 <3.11 <2.74 <2.81 <2.82 <3.79 02/22/94 <2.11 <2.15 <2.36 <2.03 <1.78 <1.87 <1.48 <1.50 <2.13 03/02/94 <1.34 <1.44 <1.59 <1.48 <1.49 <1.39 <1.36 <1.17 <1.75 03/07/94 <2.33 <2.36 <2.08 <1.88 <3.55 <3.50 <3.45 <3.45 <2.69 03/14/94 <2.54 <2.98 <1.97 <2.37 <1.95 <2.25 <2.21 <2.04 <2.83 03/22/94 <2.05 <2.30 <2.10 <2.40 <1.76 <2.11 <2.10 <1.72 <1.61 03/31/94 <1.79 <1.99 <2.08 <1.05 <1.28 <1.50 <2.08 <1.35 <2.26 04/05/94 <4.52 <3.80 <2.68 <2,74 <3.06 <2.88 <2.46 <2.19 <3.53 04/12/94 <2.19 <2.12 <1.96 <2.16 <2.71 <1.85 <2.08 <2.27 <2.10 04/18/94 <2.06 <2.72 <1.41 <2.50 <3.20 <2.60 <2.27 <2.55 <2.40 04/25/94 <2.09 <2.57 <2.25 <1.90 <2.12 <1.67 <2.03 <2.73 <1.77 05/02/94 <2.27 <1.92 <2.16 <1.76 <2.63 <1.96 <2.29 <2.47 <2.11 05/10/94 <1.78 <3.46 <2.89 <1.89 <2.11 <1.88 <1.37 <1.94 <1.48 05/16/94 <2.71 <2.64 <3.47 <2.44 <2.52 <2.65 <2.10 <2.36 <2.03 05/23/94 <2.18 <1.77 <1.66 <2.08 <2.52 <2.28 <2.07 <2.64 <1.91 06/01/94 <1.98 <3.39 <2.91 <1.53 <1.72 <1.72 <1.61 <1.70 <1.40 06/07/94 <2.91 <2.77 <2.87 <2.25 <3.05 <2.75 <2.52 <2.97 <1.98 06/13/94 <3.03 <2.30 <1.76 <2.71 <2.59 <1.62 <2.50 <2.16 06/20/94 <2.07 <1.60 <2.62 <4.97 <2.40 <2.59 <2.11 <2.79 <2.13 06/29/94 <2.14 <2.01 <2.94 <1.76 <1.97 <1.52 <1.35 <1.72 <1.24 07/05/94 <1.78 <2.06 <2.44 <2.42 <3.05 <2.56 <2.22 <2.34 <1.79 07/12/94 <1.72 <2.01 <1.86 <2.53 <2.12 <2.45 <1.69 <2.60 <1.92 07/19/94 <2.17 <2.31 <2.07 <2.39 <2.38 <2.49 <1.93 <1.87 <1.05 07/26/94 <2.05 <3.03 <1.66 <2.41 <2.61 <2.22 <2.47 <1.94 <1.73 08/01/94 <2.39 <1.85 <1.47 <2.92 <2.74 <2.74 <2.25 <2.62 <2.06 08/08/94 <2.17 <2.50 <2.21 <2.74 <4.28 <3.83 <3.88 <4.27 <2.53 08/16/94 <2.17 <2.93 <2.26 <2.44 <2.36 <2.20 <2.21 <3.09 <1.84 08/23/94 <2.51 <1.46 <3.34 <2.76 <3.46 <1.97 <2.83 <2.18 08/31/94 <2.20 <2.01 <2.33 <1.54 <1.96 <2.08 <1.85 <1.52 09/07/94 <2.02 ,2.50 <2.67 <1.72 <1.79 (2.60 <2.31 '<2.66 <2.12 09/13/94 <2.29 <2.22 <2.02 <2.42 <2.75 <2.74 <2.51 <3.16 <1.98 09/19/94 <2.29 <2.03 <2.25 <2.60 <3.05 <2.90 <2.47 <1.98 <2.23 09/26/94 <2.17 <2.30 <2.38 <2.68 <2.64 <1.86 <2.00 <2.32 10/04/94 <2.56 <2.30 <2.91 <2.37 <3.68 <2.46 <2.65 <2.98 <4.01 10/11/94 <1.47 <2.02 <1.95 <1.98 <2.48 <2.07 <2.52 <3.69 <2.58 $
10/17/94 <1.90 <2.15 <1.81 <1.92 <1.56 <2.34 <1.76 <2.68 <2.73 10/24/94 <1.71 <1.34 <1.77 <1.87 <2.03 <1.62 <2.71 <1.91 <1.79 10/31/94 <1.00 <1.28 <1.93 <2.26 <2.12 <1.62 <2.37 <4.02 <2.30 11/07/94 <2.57 <1.50 <1.65 <1.98 <1.58 <1.57 <2.11 <2.40 <2.34 11/14/94 <1.74 <2.12 <1.63 <2.35 <1.38 <1.77 <1.91 <1.88 <2.46 11/21/94 <1.93 <1.42 <1.62 <1.83 <2.26 <1.43 <2.20 <1.43 <1.71 11/28/94 <1.93 <1.42 <2.51 <2.32 <1.06 <1.50 <1.79 <1.58 <1.90 12/05/94 <1.73 <1.54 <1.57 <2.01 <1.96 <2.21 <2.51 <1.96 <2.43 12/12/94 <2.26 <2.42 <2.27 <2.36 <2.09 <2.11 <2.19 <1.74 <2.48 12/19/94 <1.66 <1.76 <2.02 <1.93 <1.50 <2.17 <1.45 <1.30 <1.34 12/27/94 <1.49 <1.45 <1.86 <2.12 <2.04 <2.38 <1.71 <1.96 <1.88 NOTE: ActMttes shown are values actuaDy measured, whereas those indcated as "<" are minimum detectable actMties (MDAs) under the particular conditons of analysis of nuclides for which analyses are required by RBS Technical Specifcat ons.
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l
RIVER BEND STATION RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT FOR 1994 Normalized Gamma-Ray Exposure Sunrnary (mR) ,
Quarterly Thermoluminescence Dosimeter Results l INDICATOR STATION IST QTR 2ND QTR 3RD QTR 4TH QTR TA1 13.13 12.36 12.41 12.42 TA2 11.31 14.11 TB1 14.40 12.76 13.91 15.24 TB2 14.49 13.25 14.41 16.83 TC1 13.23 12.86 13.31 15.42 TC2 10.73 10.82 11.51 12.42 TCS 12.12 11.02 11.71 13.36 TD1 13.42 13.15 13.11 15.14 TD2 11.72 11.70 11.91 13.55 TE1 12.25 11.47 12.41 14.67 TE2 9.94 10.72 10.01 11.58 TF1 12.74 12.36 12.71 14.02 TF2 13.10 12.68 13.21 15.89 TG1 13.81 13.15 12.91 15.05 TG2 13.50 11.70 12.61 13.92 TH1 10.29 9.79 10.11 12.05 TH2 11.72 10.92 11.41 13.08 TJ1 11.76 11.27 11.61 12.99 TJ2 10.58 10.09 10.01 11.95 -
TK1 12.54 12.26 12.11 14.20 TK2 12.36 12.54 14.60 TKS 11.56 10.58 10.41 13.08 TL1 13.03 11.57 12.41 14.49 TL2 11.03 9.99 10.46 11.93 TLS 13.30 13.02 12.84 14.60 TM1 11.86 10.38 10.21 12.52 TM2 13.80 13.55 13.63 16.38 TN1 13.23 12.46 12.21 14.49 TN2 10.18 10.09 10.07 12.33 TP1 12.44 12.76 12.71 15.52 TP2 12.25 11.47 12.31 14.49 TQ1 12.44 11.57 11.91 13.55 TQ2 12.05 11.47 11.91 13.74 TQS1 12.93 12.46 12.61 14.58 TOS2 11.56 11.18 10.71 12.70 TR1 9.12 8.80 9.21 10.45 TR2 13.13 12.36 13.21 14.67 TRS 12.93 12.07 12.61 14.67 CONTROL STATIONS TAC 12.44 11.67 11.91 14.11 TEC 11.92 11.31 12.21 13.83 TGS 12.21 11.97 11.65 13.51 THS 13.80 13.45 13.04 16.28 TLC 11.13 10.29 10.07 11.83 TQS3 12.61 11.70 12.31 14.28 30
RIVER BEND STATION RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT FOR 1994 Gross Beta Activities (pC1/ liter) in Water Samples INDICATOR LOCATIONS CONTROL LOCATIONS SAMPLING PERIOD SWD DW DL WD SWU WU BLANK1 JAN 3.18 < 2.48 82.80 2.48 < 1.98 FEB 3.03 3.33 73.20 < 2.59 < 2.57 < 2.57 < 2.05 MAR <6.76 < 6.76 45.60 < 6.76 < 1.35 l APR < 7.03 4.55 44.10 < 7.03 < 1.41 MAY < 7.30 5.61 37.50 4.64 < 7.30 < 7.30 < 1.46 JUN 7.90 8.21 198.00 < 5.38 < 1.42 JUL 7.11 5.03 92.30 3.19 2.77 4.51 <1.39 AUG 8.20 9.05 81.60 7.58 < 1.17 SEP 3.61 2.64 38.10 4.18 < 1.51 OCT 4.31 5.47 137.20 2.66 <1.43 NOV 5.64 6.22 59.60 < 3.96 3.19 < 3.96 < 1.59 DEC < 3.56 2.85 384.00 5.00 < 1.42 Notes: (1)Distil;ed, deionized well water (laboratory reagent water)is used for the anatytical blank.
Samples from SWD, DW, and SWU are composites of weekly grabs; samples from DL are composites of flow-weighted grabs. Samples from WU and WD are quarterly grabs. ActMties shown are values actually measured, wtiereas those indicated as "<" are minimum detectable activities (MDAs) under the par icular conditions of analysis.
1 F
i l
31
1 I
RIVER BEND STATION l
/
RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT FOR 1994 Tritium Activities (pci/ liter) in Quarterly Water samples INDICATOR LOCATIONS CONTROL LOCATIONS PERIOD SWD DW DL WD SWU WU BLANK I QTR1 <296 <297 17192 <292 <296 <296 <285 QTR2 <311 <311 15449 <312 <310 <311 <310 QTR3 <186 <297 3995 <297 <221 <300 <298 QTR4 158 176 4306 173 <324 336 <326 NOTES: (1) Distilled, deiontzed well water (laboratory reagert water)is used for the analytcal blank.
Samples from SWD, DW, and SWU are composites of weekty grabs; samples from DL are composites of floweigtted grabs; the samples from WD and WU are monthly grabs.
Activities shown are values actually measured, whereas those indicated as "<" are minimum detectable actMties (MDAs) under the partcular conditions of analysis.
l 32
RIVER BEND STATION RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT FOR 1994 Gansna-Emitting Nuclide Activity (pCi/ liter) in Water by Location BERYLLIUM-7 INDICATOR LOCATIONS CONTROL LOCATIONS PERIOD SWD DW DL WD SWU WU FEB 11.90 POTASSIUM-40 INDICATOR LOCATIONS CONTROL LOCATIONS PERIOD SWD DW DL WD SWU WU JAN 15.00 15.40 48.50 13.70 FEB 12.20 10.20 51.51 11.50 12.70 12.10 MAR 10.20 12.40 56.30 14.80 APR 12.00 10.50 32.95 10.90 MAY 16.50 11.90 37.10 34.60 29.00 JUN 14.70 15.00 16.50 15.40 JUL 15.50 15.70 15.90 33.90 13.50 44.40 AUG 15.60 18.20 23.20 15.80 SEP 10.60 41.45 j OCT 56.80 NOV 25.30 54.30 55.00 DEC 72.20 CHROMIUM-51 INDICATOR LOCATIONS CONTROL LOCATIONS PERIOD SWD DW DL W9 SWU WU JAN 145.00 FEB 125.00 FAR 56.20 APR 128.00 MAY 25.40 JUN 19,90 JUL 10.90 AUG 135.00 SEP 60.40 OCT 148.00 NOV DEC 252.00 NOTE: Actrvities shown are values actually measured, whereas those indicated as "<" are minimum detectable activities under the particular conditions of analysis of nuchdes for which anaWes are required by RBS Technical Specifications.
33
,,-w 7
RIVER BEND STATION RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT FOR 1994 Gamma-Emitting Nuclide Activity (pci/ liter) in Water by Location '
MANGANESE-54 INDICATOR LOCATIONS CONTROL LOCATIONS PERIOD SWD DW DL WD SWU WU JAN < 1.52 < 1.47 38.30 < 1.48 FEB < 1.27 <11.60 60.10 < 1.23 < 1.19 < 1.28 MAR < 1.18 < 1.25 19.30 < 1.19 APR < 1.24 < 1.19 58.50 < 1.14 MAY < 1.41 < 1.32 39.60 < 4.57 < 1.32 < 4.50 JUN < 1.40 < 1.40 57.90 < 1.36 JUL < 1.11 < 1.15 63.40 < 4.25 < 1.29 < 4.44 AUG < 1.42 < 1.54 81.20 < 1.46 SEP < 1.20 1.08 34.80 < 1.50 OCT < 4.33 . 4.36 211.00 < 4.22 NOV < 2.38 < 2.23 36.30 <12.30 < 2.54 < 9.49 DEC < 4.59 < 5.06 418.00 < 5.90 COBALT-58 INDICATOR LOCATIONS CONTROL LOCATIONS PERIOD SWD DW DL WD SWU WU JAN < 1.84 < 1.80 5.70 < 1.88 FEB < 1.49 < 1.79 9.93 < 1.65 < 1.46 < 1.53 MAR < 1.45 < 1.48 2.69 < 1.44 APR < 1.32 < 1.36 8.05 < 1.32 MAY < 1.62 < 1.63 5.59 < 3.95 < 1.52 < 4.51 JUN < 1.63 < 1.84 8.12 < 1.61 JUL < 1.33 < 1,54 7.66 < 4.09 < 1.59 < 4.17 AUG < 1.74 < 1.81 5.81 < 1.86 SEP < 1.26 < 1.29 8.05 < 2.15 OCT < 4.85 < 3.52 37.20 < 4.03 NOV < 2.44 < 2.65 4.98 < 8.75 < 2.87 < 8.73 DEC < 3.95 < 5.36 57.50 < 6.02 IRON-59 INDICATOR LOCATIONS CONTROL LOCATIONS PERIOD SWD DW DL WD SWU WU JAN < 5.03 < 4.94 14.50 < 4.67 FEB < 3.71 < 4.42 19.90 < 3.94 < 3.72 < 4.31 MAR < 3.49 < 3.68 8.44 < 3.36 APR < 2.99 < 3.44 29.00 < 3.28 MAY < 3.42 < 3.99 24.90 < 7.89 < 3.87 < 8.80 JUN < 3.98 < 3.99 19.60 < 4.38 JUL < 3.31 < 3.47 15.20 < 8.22 < 3.78 < 8.97 AUG < 3.92 < 4.04 13.80 < 4.02 SEP < 3.15 < 2.93 7.85 < 4.50 OCT < 8.94 <10.70 57.80 < 9.24 NOV < 5.73 < 6.37 < 7.29 <20.90 < 6.13 <16.20 DEC < 9.23 <11.70 76.20 <12.90 NOTE: Activities shown are values a ct u all y measured, whereas those indicated as
"<" are minimum detectable activities (MDAs) under the particular conditions of analysis of nuclides for which analyses are required by RDS Technical Speci fi ca t i ons .
I 34 1
RIVER BEND STATION RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT FOR 1994 Ganana-Emitting Nuclide Activity (pci/ liter) in Water by Location COBALT-60 INDICATOR LOCATIONS CONTROL LOCATIONS PERIOD SWD DW DL WD SWU WU JAN < 1.50 < 1,48 58.50 < 1.47 FEB < 1.22 < 1.18 95.60 < 1.28 < 1.32 < 1.28 MAR < 1.32 < 1.19 30.70 < 1.22 APR 0.57 < 1.21 73.40 0.59 MAY < 1.43 < 1.44 59.40 < 4.43 < 3.28 < 5.24 JUN < 1,42 < 1.51 151.00 < 1.46 JUL < 1.28 0.50 211.00 < 4.36 < 1.32 < 5.13 AUG <14.90 < 1.47 189.00 < 1.49 SEP < 1.00 < 1.08 51.60 < 1.33 OCT < 5.15 < 4.75 272.00 < 4.23 NOV < 2.35 < 2.53 57.50 <13.90 < 2.48 <11.80 DEC < 4.82 < 5.15 586.00 < 6.09 ZINC-65 INDICATOR LOCATIONS CONTROL LOCATIONS PERIOD SWD DW DL WD SWU WU l
JAN 3.39 < 3.16 <12.30 < 3.36 FEB < 2.48 < 2.65 4.95 < 2.90 < 2.63 < 2.93 MAR < 2.56 < 2.60 1.67 < 2.73 APR < 2.42 < 2.60 4.15 < 2.56 MAY < 2.89 < 3.26 4.93 <11.6 < 2.03 <11.80 JUN < 3.09 < 3.24 9.83 < 3.16 JUL < 2.65 < 2.53 8.87 <11.0 < 2.98 <12.90 AUG < 3.06 < 3.31 8.16 < 3.12 '
SEP < 2.09 < 2.07 < 4.52 < 3.05 OCT < 7.61 < B.08 <15.30 < 8.48 NOV < 4.72 < 4.83 < 5.93 <20.2 < 4.44 <29.70 DEC <29.90 < 8.95 16.50 <11.80 NIOBIUM-95 INDICATOR LOCATIONS CONTROL LOCATIONS PERIOD SWD DW DL WD SkU WU JAN < 2.92 < 2.99 3.52 < 2.81 FEB < 2.15 < 2.65 8.38 < 2.57 < 2.20 < 2.48 MAR < 1.97 < 2.05 2.09 < 2.12 APR < 1.75 < 1.80 4.13 < 1.77 MAY < 2.00 < 2.14 3.65 < 4.35 < 3.04 < 5.19 JUN < 2.18 < 2.48 8.23 < 2.44 JUL < 1.84 < 2.21 6.94 < 4.48 < 2.15 < 5.30 AUG < 2.31 < 2.45 4.59 < 2.42 SEP < 1.93 < 1.72 < 2.90 < 2.56 OCT < 5.71 < 5.76 < 7.96 < 5.47 NOV < 3.48 < 3.58 < 3.56 <12.80 < 3.86 <12.10 DEC < 5.26 < 5.62 15.90 < 7.23 NOTE:Activitleri shown are values act ually ineasured, whereas those indicated as "<" are minimum detectable act i vit ies (MDAs) under the parLcular conditions of a nal ysis of nuclides for which analyses are required by RBS Technical Specifications.
35
RIVER BEND STATION '
RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT FOR 1994 Gamma-Emitt.ing Nuclide Activity (pci/ liter) in Water by Location ZIRCONIUM-95 INDICATOR LOCATIONS CONTROL LOCATIONS PERIOD SWD DW DL WD SWU WU JAN < 3.56 < 3.46 < 9.63 < 3.47 FEB < 2.63 < 3.07 6.50 < 3.03 < 2.76 < 2.96 MAR < 2.61 < 2.52 < 9.98 < 2.66 APR < 2.61 < 2.35 < 9.57 < 2.49 MAY < 2.77 < 2.92 < 9.56 < 6.74 < 3.04 < 7.48 JUN < 3.10 < 3.36 3.74 < 3.10 JUL < 2.46 < 2.77 < 4.96 < 6.89 < 2.83 < 7.65 AUG < 2.90 < 2.98 <11.70 < 3.14 SEP < 2.15 < 2.13 < 3.98 < 3.78 OCT < 8.23 < 8.42 <11.20 < 7.85 NOV < 4.41 < 4.68 < 5.20 <24.80 < 5.18 <18.20 DEC < 7.89 <10.50 <11.40 <10.20 IODINE-131 INDICATOR LOCATIONS CONTROL LOCATIONS PERIOD SWD DW DL WD SWU WU JAN <10.20 <31.40 13.10 < 7.29 <13.70 FEB < 9.23 <15.40 < 9.56 <12.50 < 9.69 MAR <13.90 <12.50 29.70 < 7.91 APR <10.70 <12.10 15.40 < 4.79 MAY <10.10 < 7.10 < 8.81 < 4.03 < 5.99 < 4.24 JUN < 8.29 < 9.33 <13.50 < 9.01 JUL <10.40 <11.10 < 2.76 < 3.98 <10.40 < 4.17 AUG <13.90 < 0.04 14.60 < 5.93 SEP <14.80 <14.90 16.50 <14.90 OCT <14.90 <14.90 <14.90 <14.80 NOV <14.90 <14.90 <14.90 < 9.87 <14.90 < 8.99 DEC <13.90 <14.90 11.70 <14.90 CESIUM-134 INDICATOR LOCATIONS CONTROL LOCATIONS PERIOD SWD DW DL WD SWU WU JAN < 1.43 < 1.32 < 5.04 < 1.30 FEB < 1.13 < 1.16 < 5.52 < 1.26 < 1.15 < 1.21 MAR < 1.18 < 1.10 < 4.56 < 1.09 APR < 1.14 < 1.10 < 4.92 < 1.19 MAY < 1.29 < 1.31 < 4.85 < 4.75 < 1.31 < 8.87 JUN < 1.26 < 1.42 < 2.10 < 1.43 JUL < 1.22 < 1.09 < 2.25 < 4.56 < 1.29 < 5.16 AUG < 1.25 < 1.36 < 5.58 < 1.43 SEP < 1.00 < 1.04 < 1.85 < 1.36 OCT < 4.16 < 4.13 < 6.34 < 3.86 NOV < 2.24 < 2.08 < 2.53 <12.60 < 2.32 <10.80 DEC < 4.43 < 5.45 < 6.06 < 5.85
, NOTE: Activities shown are values actually rneasured, whereas those indicated as "<" are minimum detectable l
activities (MDAs ) under the particular conditions of analysis of nuclides f or which analyses are required by RI3S Technical Specifications.
36
RIVER BEND STATION RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT FOR 1994 Garuna-Emitting Nuclide Activity (pC1/ liter) in Water by Location C2SIUM-137 INDICATOR LOCATIONS CONTROL LOCATIONS PERIOD SWD DW DL WD SWU WU JAN < 1.41 < 1.38 < 5.33 < 1.42 FEB < 1.20 < 1.17 2.06 < 1.18 < 1.20 < 1.19 i MAR < 1.25 < 1.16 1.03 < 1.10 j APR < 1.13 < 1.11 < 5.23 < 1.25
> MAY < 1.37 < 1.22 < 4.74 < 4.30 < 1.35 < 4.76 l JUN < 1.20 < 1,38 < 2.21 < 1.38 l JUL < 1.17 < 1.14 < 2.12 < 4.23 < 1.23 < 4.99 I AUG < 1.37 < 1.44 < 5.99 < 1.44 SEP < 1.02 < 0.98 < 1.95 < 1.43 OCT < 4.41 < 4.13 < 6.04 < 4.23 NOV < 2.18 < 2.29 < 2.43 <13.40 < 2.65 <13.00 DEC < 4.66 < 4.97 < 6.22 < 5.62 BARIUM-140 INDICATOR LOC 7TlsNS CONTROL LOCATIONS PERIOD SWD DW DL WD SWU WU JAN <34.50 <45.00 40.90 <39.00 l FEB <25.60 <41.60 <41.50 <37.40 <26.90 <35.00 i MAR <18.80 <26.90 <29.70 <21.40 APR <15.80 <16.30 <41.10 <15.20 MAY <15.60 <20.30 <37.50 <13.70 <18.40 <14.70 JUN <20.80 <28.80 <41.10 <26.40 JUL <15.10 <23.10 <28.90 <13.40 <23.70 <14.90 AUG <19.70 <21.60 <48.40 <21.70 SEP <18.50 <17.00 <22.50 <34.30 OCT <30.20 <28.80 <37.40 <31.10 NOV <28.80 <28.90 25.70 <34.10 <27.70 <28.60 DEC <33.40 <33.70 <39.10 <33.70 LANTHANUM-140 INDICATOR LOCATIONS CONTROL LOCATIONS PERIOD SWD DW DL WD SWU WU JAN <15.30 <19.60 36.60 <16.10 FEB < 9.86 <17.10 10.90 <16.10 <11.40 <16.00 MAR < 7.71 <10.50 11.80 < 9.12 APR < 5.67 < 6.41 7.94 < 6.56 MAY < 6.02 < 8.15 <14.50 < 5.55 < 7.82 < 6.23 JUN < 8.78 <12.00 <11.60 <11.50 JUL < 6.60 < 9.30 < 7.17 < 5.29 < 9.46 < 6.56 AUG < 7.72 < 9.78 34.70 < 8.09 SEP < 6.81 < 6.21 < 7.34 < 8.80 OCT <11.70 <12.80 < 9.89 <10.70 NOV < 9.99 < 9.95 < 9.52 <14.40 < 8.39 <14.40 DEC <12.20 <11.70 <11.50 <11.40 s
WOTE: Act ivit les shown are values actually measured, whereas thcae indicated as "(* are minimum detectable activities (MDAs) under the particular conditions of analysis of nuclides for which analyses are i required by RBS Technical Specifications, i
l 37
7..
- RIVER BEND STATION RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT FOR 1994 l
l Ganna-Emitting Nuclides in Sedimant (pC1/kg dry) by Location POTASSIUH-40 BERTI1IUM-7 PERIOD DOWNSTREAM UPSTREAM DOWNSTREAM UPSTREAM
~8JtT ' ~T275T.~60~ TTT3TTD3 DEC 11640.00 11480.00 CESIUM-134 CESIUM-137 PERIOD DOWNSTREAM UPSTREAM DOWNSTREAM UPSTREAM JUN <19.40 <27.20 <21.40 21.60 DEC <27.30 <25.70 <31.20 <29.00 I
Gamma-Emitting Nuclides in Fish (pci/kg wet) by Location POTASSIUH-40 DOWNSTREAM UPSTREAM PERIOL #1 f2 #3 #1 #2 #3 JUN 1887 3065 2789 1158 1782 2577 DEC 3575 3521 2822 3459 4417 4506 MANGANESE-54 DOWNSTREAM UPSTREAM PERIOD #1 - 72 #3 #1 #2 #3 JUN <11.9 <65.1 <21.3 <54.7 (59.5 (57.5 DEC <62.2 <65.8 <46.7 <90.1 <81.0 <105 IRON-59 DOWNSTREAM UPSTREAM PERIOD #1 IT #3 #1 #2 #3 JUN <39.8 <173 (60.2 <234 <196 <195 j DEC <258 (248 <251 <245 <255 <243 l
COBALT-58 DOWNSTREAM U PSTREAM PERIOD #1 -~~T) #3 #1 12 #3 JUN <19.8 (82.2 (19.3 <?1.2 <61.1 <78.0 '
DEC <119 <81.4 <11.8 <118 <99.5 <112 )
I NOTE: Activities shown are values actually measured, whereas those indicated as "<* are minimum detectable activities (MDAs) under the particular conditions of analysis of nuclides for which analyses are required by RBS Technical Specifications.
4 38
l, RIVER BEND STATION
. RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT FOR 1994 -
Gamma-Emitting Nuclides in Fish (pci/kg wet) by Location l
COBALT-60 DOWNSTREAM UPSTREAM PERIOD #1 #2 #3 #1 #2 #3 JUN <26.8 <93.1 <26.7 <59.4 <55.3 <57.4 DEC <111 <82.0 <72.7 <85.0 <117 <B8.0 ZINC-65 DOWNSTREAM UPSTREAM PERIOD #1 #2 #3 #1 #2 #3 JUN <53.2 <156 <61.7 <136 <137 <122 DEC <106 <157 <220 <140 <168 <247 CESIUM-134 ,
DOWNSTREAM UPSTREAM PERIOD #1 #2 #3 #1 #2 #3 JUN <18.7 <62.3 <20.0 <52.2 <49.9 <52.3 DEC <83.1 <54.2 <58.3 <70.4 <76.3 <69.9 CESIUM-137 DOWNSTREAM UPSTREAM PERIOD #1 #2 #3 #1 #2 #3 JUN <16.8 <70.7 <19.8 <58.6 <46.6 <53.2 DEC <84.9 <59.0 <66.2 <79.7 <76.9 <63.1 NOTE: Activities shown are values actually measured, whereas those indicated as "<" are minimum detectable activities (MDAs) under t he particular conditioris of analysis of nuclides for which analyses are required by RBS Technical Fpecifications.
l I
l l
39
RIVER BEND STATION I RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT FOR 1994 )
Gamma-Emitting Nuclide Activity (pCi/kg wet) in Broadleaf Vegetation l Site Garden #1 (Indicator) ;
COLLECTION DATE CS-134 CS-137 I-131 BE-7 K-40 01/31/94 <36.80 <33.00 <42.50 3745 01/31/94 <35.40 <43.70 <37.10 147 4053 01/31/94 <35.70 <38.50 <40.20 264 3875 02/16/94 <50.40 <68.30 <45.40 663 2894 02/16/94 <33.40 <36.30 <31.00 211 4871 02/16/94 <25.90 <26.30 <46.10 253 1993 03/24/94 <27.30 <29.10 <45.10 2792 03/24/94 <27.00 <32.70 <50.00 174 2146 03/24/94 <34.00 <35.00 <56.90 385 3924 04/29/94 <28.40 <35.20 <42.10 340 04/29/94 <35.40 <34.90 <42.60 281 5809 04/29/94 <27.10 <32.40 <44.90 434 3390 05/23/94 <48.70 <46.40 <44.90 327 6024 05/23/94 <43.50 <51.30 <49.00 306 8946 05/23/94 <52.00 <46.80 <48.40 2770 06/27/94 <31.10 <33.60 <32.30 450 6157 06/27/94 <48.70 <58.30 <59.30 299 4713 06/27/94 <34.10 <38.40 <45.80 242 3414 07/22/94 <32.30 <31.30 <29.10 614 4602 07/22/94 <38.40 <35.60 <33.20 1525 5031 07/22/94 <38.20 <44.30 <35.80 248 3635 08/31/94 <35.70 <59.90 <42.20 1099 4402 08/31/94 <27.80 <29.90 <29.90 2755 08/31/94 <30.40 <34.60 <28.30 4969 09/21/94 <19.20 <22.90 <19.90 87 3591 09/21/94 <23.70 <29.60 <26.60 748 3757 09/21/94 <27.70 <30.60 <29.50 156 5531 10/27/94 <55.10 <50.30 <44.10 3149 10/27/94 <55.00 <76.30 <47.50 4042 10/27/94 <58.80 <38.90 <41.80 2382 3033 11/30/94 <57.10 <20.20 <45.30 373 5801 11/30/94 <45.00 <54.70 <57.50 737 4615 11/30/94 <49.90 <20.10 <12.70 3576 12/30/94 <33.90 <44.40 <58.30 158 525 12/30/94 <38.50 <42.60 <56.90 2942 12/30/94 <30.50 <31.50 <55.50 372 4749 NOTE: sampling requirement for vegetation is one sample of each of three different types from each location per month. Activities shown are values actually measured, whereas those indicated as *<" are minimum detectable activities (MDAs) under the particular conditions of analysis of nuclides for which analyses are required by RDS Technical Specifications.
40
- RIVER BEND STATION -
RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT FOR 1994 Ganmaa-Emitting Nuclide Activity (pci/kg wet) in Broadleaf Vegetation Site Garden #2 (Indicator)
COLLECTION DATE CS-134 CS-137 I-131 BE-7 K-40 01/31/94 <25.60 <26.70 <29.20 149 2895 01/31/94 <21.40 <23.00 <23.00 425 2827 01/31/94 <27.20 <37.90 <54.50 461 8628 02/18/94 <28.50 <33.10 <41.80 477 4055 02/18/94 <32.60 <27.90 <35.40 3193 02/18/94 <34.60 <37.20 <53.90 871 8371 03/24/94 <26.40 <36.80 <53.90 270 9031 03/24/94 <24.30 <31.90 <47.10 239 4048 03/24/94 <27.80 <29.40 <45.30 2257 04/29/94 <34.10 <41.80 <46.60 3862 04/29/94 <34.00 <39.30 <48.40 217 7063 04/29/94 <30.50 <28.90 <38.20 2480 05/23/94 <56.10 <61.90 <45.30 2716 05/23/94 <49.00 <45.90 <53.90 257 5710 05/23/94 <33.00 <38.50 <36.30 246 3569 06/27/94 <33.20 <42.20 <41.80 397 5270 06/27/94 <29.70 <31.30 <35.90 394 3725 06/27/94 <21.40 <20.40 <46.90 260 2399 07/29/94 <38.60 <37.40 <30.20 262 3497 07/29/94 <32.40 <29.00 <32.60 1278 4180 07/29/94 <30.90 <25.10 <22.30 112 2249 08/30/94 <56.20 <50.60 <46.40 3627 08/30/94 <43.70 <35.80 <45.70 2756 08/30/94 <40.90 <50.70 <38.80 4167 09/21/94 <25.00 <30.70 <28.40 547 2593 09/21/94 <22.60 <23.90 <23.00 219 4707 09/21/94 <23.30 <25.40 <25.80 4725 10/28/94 <53.80 <51.10 <57.80 3437 10/28/94 <39.70 <32.70 <43.50 334 3999 10/28/94 <57.40 <64.40 <56.20 2842 3072 11/30/94 <48.20 <65.10 <48.30 7170 11/30/94 <59.30 <79.80 <43.80 4368 11/30/94 <59.80 <70.50 <59.80 3883 12/30/94 (17.30 <18.50 <27.40 255 12/30/94 <27.80 <32.30 <58.40 3080 12/30/94 <35.80 <39.70 <59.60 NOTE: sampling requirement for vegetation is one sample of each of three different types from each location per month. Activities shown are values actually measured, whereas those indicated as "<" are minimum detectabl activities (MDAs) under the particular conditions of analysis of nuclides for which analyses are required by RBS Technical Specifications.
41
1 I
RIVER BEND STATION RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT FOR 1994 I;I i Gamma-Emitting Nuclide Activity (pC1/kg wet) in Broadleaf Vegetation Control Location-Angola COLI.ECTION DATE CS-134 CS-137 I-131 BE-7 K-40 01/04/94 <26.00 <30.00 <45.30 227 3924 01/0e/94 <22.80 <28.20 <48.00 160 3519 01/04/94 <32.90 <38.30 <54.80 3990 01/04/94 <19.80 <22.60 <26.90 454 2278 02/25/94 <20.80 <24.30 <28.50 122 1880 02/25/94 <19.40 <25.00 <28.40 3194 02/25/94 <25.90 <28.60 <40.90 253 3177 03/31/94 <25.60 <28.40 <45.40 232 2698 03/31/94 <26.70 <27.00 <44.60 447 4022 03/31/94 <48.90 <44.40 <58.20 982 3107 04/07/94 <30.20 <29.10 <36.20 182 2690 04/07/94 <30.90 <33.10 <36.70 653 04/07/94 <38.10 <46.00 <41.00 316 5518 05/24/94 <38.90 <46.90 <44.20 284 9027 05/24/94 <17.80 <19.00 <22.90 325 2468 05/24/94 <20.40 <24.20 <28.90 1021 5073 06/30/94 <17.20 <19.20 <27.00 1169 9184 06/30/94 <21.20 <23.10 <29.90 821 5310 06/30/94 <32.30 <35.80 <50.30 1050 3388 07/08/94 <27.30 <26.40 <42.10 1060 7787 07/08/94 <21.70 <24.20 <36.30 616 4040 07/08/94 <37.20 <37.60 <42.40 1730 3978 08/25/94 <30.30 <32.40 <31.40 1661 2208 08/25/94 <24.50 <27.90 <28.20 538 6337 08/25/94 <29.00 <26.70 <29.40 3871 09/28/94 <26.00 <27.10 <31.90 398 3554 09/28/94 <25.00 <25.60 <24.60 3500 09/28/94 <48.20 <58.60 <57.20 3045 10/06/94 <38.40 <40.50 <49.10 324 4125 10/06/94 <47.10 <58.40 <59.60 5075 10/06/94 <36.80 <56.20 <52.10 4324 11/10/94 < 9.47 <52.10 <57.80 2072 11/18/94 <46.50 <72.60 <20.00 4981 11/18/94 <31.30 <29.30 <57.60 1974 12/21/94 <27.80 <35.40 <58.50 2396 12/21/94 <21.60 <28.50 <49.10 228 4329 12/21/94 <31.30 <29.30 <57.60 1974 NOTE: Sampling requirement for vegetation is one sample of each of three different types from each location per month. Activities shown are values actually measured, whereas those indicated as "<" are minimum detectable activities (MCAs) under the particular conditions of analysis of nuclides for which analyses ate required by RBS Technical Specifications. I l
I 1
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RIVER BEND STATION .
RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT FOR 1994 I
APPENDIX B l
Sumrnary of Preoperational 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).
I 43
l RIVER BEND STATION RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT FOR 1994 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 tD 10/31/85 Medium or Type and Total Lower Limit All Indicator Locatbn with Highest Control Number of Pathway Sampled Number of of Stations Mean (f), Annual Mean Locationy Mean Nonroutine (Unit of Measure) Analyses Detection, Range (f) Reported Performed (LLD) Range Results Name Mean (f)'
Distance / Direction Range
+- +. e.
Air Particylate Gross Data 0 01 0.03 (752/759) AQS2 0 03 (146/158) 0.03 (326/327) N/A (pCl/m") (1086) 001 0.09 5.8 km NW 0.01- 0.09 0.01 0.08 Cs-134 0.05 M < LLD M < LLD MA i .. .
Cs-137 0.06 M < LLD M <LLD N/A (95) e-Air Radnu ine 6-131 0.07 M = LLD M < LLD N/A (pCi m (1086)
Direct (TLD)" Gamma Monthly 6 8(1018/1064) TM2 7.8 G7/28) 6.7(139/150) N/A (mR total) (1214) 0.7 19.3 4.2 km WSW 3.2 16.2 0 27.8 4* +- 4- 4-8 Gamma Quarterly 19 0'(404/418) TG1 27.5 (11/11) 18 9'(51/54) N/A (472) 6 8 - 32.1 1.6 km SE 12.2 -27.6 6.5-23.5 Surface Water H-3 2000 All
Mn-54 15 All < LLO M < LLD N/A (68)
+ 1- p Co-58 15 All < LLD l M < LLD l N/A (68) {
Fe-59 30 M < LLD M < LLD N/A (58)
Co40 15 All < LLD M =LLD N/A (68)
T Zn-65 30 M <LLD N/A (68)
Ntr95 15 i M < LLD N/A
(") 4 1 .
Zr-95 30 All < LLD M <LLD N/A (68) 6-131 15 M <LLD AH < LLD N/A (68)
Cs-134 15 M =LLD M < LLD N/A (68)
Cs 137 18 M <LLD ALL=LLO N/A (68)
Ba 140 60 All < LLD ALL<LLD N/A
=> .- _ i . . . !
) La-140 15 All
(52) f 4 -12 4 km downstream 4 - 12 }
5-13 44
}
RIVER BEND STATION RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT FOR 1994 TABLE B.1 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 Medium or Type and Total Lower Limit All Indicator Location with Highest Control Number of Pathwa Sampled Number of of Stations Mean (f), Annual Mean Nonroutine Analyses Locationy Mean (Unit Measure) Detection' Range (f) Reported Performed (LLD) Range Results Narne Mean (f)'
Distance / Direction Range Groundwater
{
Mn-54 I 15 All < LLD All < LLD N/A (22) l Co-58 15 M = LLD M < LLD N/A (22)
T* 7 '
Fe-59 i 30 All
- d. 4 p
Co-60 15 All < LLD M < LLD N/A (22)
+ + +
Zn-65 2 All < LLD All < LLD N/A (22)
Nb-95 15 All < LLD All < LLD N/A
. 4 a.
Zr-95 l 30 All < LLD M < LLD N/A (22)
J 4-131 15 M < LLD M < LLD N/A (22) 7_. A Cs-134 l 15 All < LLD All
Ba-140 60 All < LLD All < LLD N/A (22)
La 140 15 All < LLD All < LLD N/A (22)
+. + + + ,
Gross Beta 4 4 (5/12) WD 4 (5/12) 6 (2/3) N/A l (15) 2-8 470 m SW 28 3-9 l Drmking Water
- LLD N/A (pCvister) (18)
Mn-54 15 All < LLD All < LLD N/A (40)
Co-58 15 All < LLD M <LLD N/A (40)
Fe-59 30 All < LLD M < LLD N/A l (40)
.... .+. ...
Co40 15 M = LLD All < LLD N/A (40) t 2n-65 30 All
Nts95 15 All < LLD M = LLD N,A (40) 45
RIVER BEND STATION !
RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT FOR 1994 l
l 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 1
Medium or Type and Total Lower Limit M Ind6cator Location with Highest Control Number of Pathway Sampled Number of of Stations Mean (f)' Annual Mean Locationy Mean Nonroutine (Unit of Measure) Analyses Detection' Range (f) Reported Performed (LLD) Range Results Name Mean (f)'
Distance / Direction Range
)
Zr- 5 30 All a LLD M < LLD N/A k131 15 M = LLD M < LLD N/A (40)
+ .
I Cs-134 15 All < LLD All
- LLD N/A (40) I
.,. ,.-- . 1 Cs 137 18 M <LLD M <LLD N/A (40)
Ba-140 60 All < LLD M < LLD N/A (40) 4 +
La 140 15 M < LLD M < LLD N/A (40)
Gross Beta 4 68(28,78) Donaldsonville 6.8 (28/28) 7.8 Q4/26) N/A (54) 3-12 138 km downstream 3 12 5-13 Shoreline 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)
Cs-137 180 M < LLD M < LLD N/A (4)
Milk K-40' I None 1313 (8/9) MF2 N/A 1313(8/9) 1318 (7/9)
(pCalliter) (18) l Required 1179-1475 6 km ESE 1170-1475 1196- 1409 4- ,
L131 1 All
- LLD l M <LLD' N/A i
(81) l l 4 4.-... 4 I Cs-134 15 M = LLD All < LLD' N/A (82)
+ t 4-Cv137 18 All < LLD All
- LLD' N/A (82)
Ba-140 60 All
- LLD M = LLD' N/A (82) 4 -4.-- 4 4-La.140 15 M <LLD M < LLD N/A (82) t FisMnvertebratos K-40' None 9037 (2/2) FD 9037 (2/2) 7b40 (4/4) N/A (pCvkg wet) (6) Required 4 km downstream 6320-11754 4177-11438 Mn-54 130 All e LLD All < LLD N/A (15) 4 6.- + 4 4 &
Co-58 130 All < LLD All
- L.D N/A (15)
, + r -,. v Fe-59 260 All < LLD* l M < LLD' l N/A (15) l l l 130 M < LLD All < LLD N/A 46
RIVER BEND STATION RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT FOR 1994 TABLE B.1 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 10/31/85 Medium or Type and Total Lower Limit All indicator Pathway sampled Number of of stations Mean (f), Location l Annual with Highest Mean Control Locationy Mean Number of Nonroutine (unft of Measure) Analyses Detection, Range Reported (f)
Performed (LLD) Range Results Name Mean (f)*
Distance / Direction Range Fish / invertebrates Zn-65 260 All
(conimuod)
Co-134 130 All < LLD All < LLD N/A (15)
Cs.137 160 All < LLD All < LLD N/A (15)
K-40' None 3368 (6/10) G2 3368 (6/10) 3768 N/A (11) Required 1398 -5389 1.3 km NW 1398 - 5389 single value L131 60 f All < LLD' All < LLD N/A (75)
{
Cs-134 60 All < LLD All < LLD N/A (76)
Ca-137 80 97 (4/43) G1 97(4/43) All < LLD N/A (76) l f 59 120 1 km WNW 59 -120 NOTES:
(1) Lower Limit of Detection (LLD) as defined in RBS Technical Specifications (NUREG-1172).
(2)Mean and range based on detectable ineasurements only. The fraction of detectable measurements at specified locations is indicated in parentheses (f).
(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" measurement for October,1985.
(4)Beginning in January,1985, groundwater was sampled from one upgradient (WU - control) and one downgradient (WD - indicator) well; previously, groundwater was sampled from construction dewatering (well-point) wells.
(5)The upstream surface water sampling iocation (SWU) is used as a " control" for drinking water comparisons.
(6)The values listed for K-40 were derived from the incipient in-house analytical program.
(7)The values listed for the controllocation for milk were derived from the incipient in-house analytical program. Training of personnelin calibration and anatytical 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; I 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 regiaired LLD for 1-131 in broadleaf vegetation was not met in 1 out of 11 analyses. (See discussion of i Program Exceptions in the Preoperational Radiological Environmental Monitoring Repoft for 1985.)
(8)The LLD for one downstream fish sample (catfish, analyzed in-house) was 265 pCi/kg (wet). The LLD for one ,
upstream fish sample (largemouth bass, analyzed in-house) was 263 pCi/kg (wet). l 47 l
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