W3F1-2012-0036, Annual Radiological Environmental Operating Report-2011
| ML12122A016 | |
| Person / Time | |
|---|---|
| Site: | Waterford  |
| Issue date: | 04/30/2012 |
| From: | Steelman W Entergy Operations |
| To: | Office of Nuclear Reactor Regulation, Document Control Desk |
| References | |
| W3F1-2012-0036 | |
| Download: ML12122A016 (62) | |
Text
W3F1-2012-0036 April 30, 2012 U.S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, DC 20555-0001
Subject:
Annual Radiological Environmental Operating Report -2011 Waterford Steam Electric Station, Unit 3 (Waterford 3)
Docket No. 50-382 License No. NPF-38
Dear Sir or Madam:
Attached is the Annual Radiological Environmental Operating Report for the period of January 1 through December 31, 2011. This report is submitted pursuant to the requirements of Waterford 3 Technical Specification Section 6.9.1.7.
Please contact William J. Steelman, Licensing Manager, at (504) 739-6685, if you have questions regarding this information.
There are no new commitments contained in this submittal.
Sincerely, WJS/JDW
Attachment:
Annual Radiological Environmental Operating Report - 2011 Entergy Operations, Inc.
17265 River Road Killona, LA 70057-3093 Tel 504 739 6685 Fax 504 739 6698 wsteelm@entergy.com William J. Steelman Licensing Manager Waterford 3
W3F1-2012-0036 Page 2 cc:
Mr. Elmo E. Collins, Jr.
Regional Administrator U. S. Nuclear Regulatory Commission Region IV RidsRgn4MailCenter@nrc.gov NRC Senior Resident Inspector Waterford Steam Electric Station Unit 3 Marlone.Davis@nrc.gov NRC/NRR Project Manager for Waterford 3 Kaly.Kalyanam@nrc.gov Allyson Howie Entergy Legal, General Sr Councel AHowie@entergy.com
Attachment to W3F1-2012-0036 Annual Radiological Environmental Operating Report - 2011
Annual Radiological Environmental Operating Report January 1, 2011 - December 31, 2011 Waterford 3 Steam Electric Station Entergy Operations, Inc.
Docket Number 50-382 License Number NPF-38
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Annual Radiological 2011 Environmental Operating Report Waterford 3 Steam Electric Station
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TABLE OF CONTENTS
SUMMARY
1
1.0 INTRODUCTION
4 1.1 Radiological Environmental Monitoring Program 4
1.2 Pathways Monitored 4
1.3 Land Use Census 4
2.0 INTERPRETATION AND TRENDS OF RESULTS 19 2.1 Air Particulate and Radioiodine Sample Results 19 2.2 Thermoluminescent Dosimetry Sample Results 19 2.3 Water Sample Results 20 2.4 Sediment Sample Results 20 2.5 Milk Sample Results 21 2.6 Fish Sample Results 21 2.7 Broad Leaf Vegetation Sample Results 21 2.8 Land Use Census Results 21 2.9 Interlaboratory Comparison Results 21 3.0 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM
SUMMARY
24 3.1 2011 Program Results Summary 24
Annual Radiological 2011 Environmental Operating Report Waterford 3 Steam Electric Station
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LIST OF TABLES TABLE 1.1 RADIOLOGICAL ENVIRONMENTAL SAMPLING PROGRAM 5
TABLE 2.1 BIENNIAL LAND USE CENSUS RESULTS 22 TABLE 3.1 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM
SUMMARY
25
Annual Radiological 2011 Environmental Operating Report Waterford 3 Steam Electric Station
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LIST OF FIGURES FIGURE 1-1 REMP SAMPLES WITHIN 2 MILES OF WATERFORD 3 16 FIGURE 1-2 REMP SAMPLES WITHIN 10 MILES OF WATERFORD 3 17 FIGURE 1-3 REMP SAMPLES WITHIN 50 MILES OF WATERFORD 3 18 FIGURE 2-1 TLD RADIATION DOSE COMPARISON (BY YEAR) 23
Annual Radiological 2011 Environmental Operating Report Waterford 3 Steam Electric Station
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LIST OF ATTACHMENTS ATTACHMENT 1 2011 RADIOLOGICAL MONITORING REPORT
SUMMARY
OF MONITORING RESULTS 29 ATTACHMENT 2 STATISTICAL COMPARISONS 46
Annual Radiological 2011 Environmental Operating Report Waterford 3 Steam Electric Station 1
Summary The Annual Radiological Environmental Operating Report presents data obtained through analyses of environmental samples collected for Waterford 3s (W3) Radiological Environmental Monitoring Program (REMP) for the period January 1 through December 31, 2011. This report fulfills the requirements of W3 Technical Specification 6.9.1.7.
During 2011, gross beta radioactivity was detected in air and drinking/surface water locations. Results obtained at the indicator locations were similar to those obtained at the control location. Therefore, levels continue to remain at background.
Cesium-137 was detected during 2011 at control milk location MKA-31. This is consistent with results obtained from the preoperational program and previous years of operation. The level of Cesium-137 in the sample was below both the reporting level and the LLD level required by the W3 TRM.
REMP air samples collected on 04-04-11 identified detectable concentrations of Iodine-131. Given the following facts, the detectable concentrations are not a result of W3 operation.
The quantities of radioactive airborne effluents from W3 during 2011 did not increase significantly compared to year 2010.
Prior REMP sample results have not detected the presence of this isotope in air samples.
The concentrations being detected in the indicator samples were also identified in the control samples far from W3.
As such, the atypical detection of these radionuclides in both indicator and control samples is credibly attributed to the trans-Pacific transport of airborne releases from Dai-Ichi, Fukushima following the March 11, 2011 Tohoku earthquake and is not related to the operations of W3.
Radiological Environmental Monitoring Program W3 established the REMP prior to the station becoming operational (1985) to provide data on background radiation and radioactivity normally present in the area. W3 has continued to monitor the environment by sampling air, water, sediment, milk, fish and broad leaf vegetation, as well as measuring radiation directly.
The REMP includes sampling indicator and control locations within a 31-mile radius of the plant. The REMP utilizes indicator locations near the site to show any increases or buildup of radioactivity that might occur due to station operation, and control locations farther away from the site to indicate the presence of only naturally occurring radioactivity. W3 compares indicator results with control, preoperational, and previous years operational results to assess any impact W3 might have on the surrounding environment.
In 2011, W3 collected environmental samples for radiological analysis. Based on the comparison results of indicator locations with control locations and previous studies, it was concluded that overall W3 operations had no significant impact on plant environs. The review of 2011 data, in many cases, showed undetectable radiation levels in the environment and near background levels in significant pathways associated with W3.
Harmful Effects or Irreversible Damage The REMP did not detect any harmful effects or evidence of irreversible damage in 2011. Therefore, no analysis or planned course of action to alleviate problems was necessary.
Annual Radiological 2011 Environmental Operating Report Waterford 3 Steam Electric Station 2
Reporting Levels W3's review indicates that no samples equaled or exceeded reporting levels for radioactivity concentration in environmental samples, as outlined in Technical Requirements Manual (TRM)
Table 3.12-2 when averaged over any calendar quarter, due to W3 effluents. Therefore, 2011 results did not trigger any radiological monitoring program special reports.
Radioactivity Not Attributable to W3 The W3 REMP detected radioactivity attributable to other sources three times. These include the 25th Chinese nuclear test explosion in 1980, the radioactivity plume release due to reactor core degradation at the Chernobyl Nuclear Power Plant in 1986, and the airborne release from Dai-lchi, Fukushima following the Tohoku earthquake on March 11, 2011.
Comparison to State Program W3 compared REMP data to the monitoring program of the Environmental Radiological Laboratory -
Department of Environmental Quality Laboratory Services Division (ERL-DEQLSD). The ERL-DEQLSD and the W3 REMP entail similar radiological environmental monitoring program requirements. Both programs have obtained similar results over previous years.
Sample Deviations Milk Samples Since milk samples for indicator location MKE-3 were unavailable for all quarters of 2011, broad leaf vegetation sampling was performed as required by TRM Table 3.12-1. Broad leaf vegetation results are in section 2.7. Milk samples were collected from one control location and analyzed for Iodine-131 and gamma radionuclides. Results indicate that all measurements were below the calculated LLDs.
Therefore, W3 concluded that plant operations had no significant impact on this pathway during 2011.
Missed Samples TLDs located at stations G-4, G-8 and Q-5 were missing at the time of the first quarter exchange.
TLDs located at stations A-2, B-1, B-4, D-2, and G-8 were missing at the time of the second quarter exchange. TLDs located at stations A-5 and E-5 were missing at the time of the third quarter exchange. TLDs located at stations C-1 and G-8 were missing at the time of the fourth quarter exchange.
Required Lower Limit of Detection (LLD) Values All LLDs during this reporting period were within the acceptable limits required by the W3 TRM.
Unavailable Results W3 received analytical results in adequate time for inclusion in this report. In addition, W3s review identified no missing results.
Program Modifications No program modifications were made during 2011.
Annual Radiological 2011 Environmental Operating Report Waterford 3 Steam Electric Station 3
Attachments contains results of air, TLD, water, sediment, milk, fish and broad leaf vegetation collected in 2011. TLDs were analyzed by Stanford Dosimetry. All remaining samples were analyzed by the River Bend (RBS) Environmental Laboratory. Attachment 1 also contains River Bends participation in the interlaboratory comparison program during 2011.
contains statistical comparisons of:
TLD measurements from stations grouped by distance TLD radiation dose to historical data by location Gross beta activity measurements on air particulate filters Gross beta activity measurements in surface/drinking water samples
Annual Radiological 2011 Environmental Operating Report Waterford 3 Steam Electric Station 4
1.0 Introduction 1.1 Radiological Environmental Monitoring Program W3 established the REMP to ensure that plant operating controls properly function to minimize any associated radiation endangerment to human health or the environment. The REMP is designed for:
Analyzing important pathways for anticipated types and quantities of radionuclides released into the environment.
Considering the possibility of a buildup of long-lived radionuclides in the environment and identifying physical and biological accumulations that may contribute to human exposures.
Considering the potential radiation exposure to plant and animal life in the environment surrounding W3.
Correlating levels of radiation and radioactivity in the environment with radioactive releases from station operation.
1.2 Pathways Monitored The airborne, direct radiation, waterborne and ingestion pathways are monitored as required by W3 TRM Table 3.12-1. A description of the W3 REMP utilized to monitor the exposure pathways is described in Table 1.1 and shown in Figures 1-1, 1-2 and 1-3.
Section 2.0 of this report provides a discussion of 2011 sampling results with Section 3.0 providing a summary of results for the monitored exposure pathways.
1.3 Land Use Census W3 conducts a land use census biennially, as required by Section 3.12.2 of the TRM. The purpose of this census is to identify changes in uses of land within five miles of W3 that would require modifications to the REMP and the Offsite Dose Calculation Manual (ODCM). The most important criteria during this census are to determine the location in each sector of the nearest:
- 1) Residence
- 2) Animal milked for human consumption
- 3) Garden of greater than 50 m 2 (500 ft
- 2) producing broad leaf vegetation.
W3 conducts the land use census by:
Field surveys in each meteorological sector out to five miles in order to confirm:
Nearest permanent residence Nearest garden and approximate size Nearest beef cow Nearest food product Nearest milking animal Identifying locations on maps, measuring distances to W3 and recording results on data sheets.
Comparing current census results to previous results.
Annual Radiological 2011 Environmental Operating Report Waterford 3 Steam Electric Station 5
Table 1.1 Radiological Environmental Sampling Program Exposure Pathway Requirement Sample Point Description, Distance and Direction Sampling and Collection Frequency Type and Frequency Of Analyses Airborne Radioiodine and Particulates Three samples from close to the three SITE BOUNDARY locations, in different sectors, in or near sectors having the highest calculated annual average ground level D/Q.
APQ-1 (NW, 0.81 Miles) - (West bank)
Located in soybean/sugarcane field off LA 18 east of LA 18/3141 intersection.
APF-1 (ESE, 0.35 Miles) - (West bank)
Located on north side of Secondary Meteorological Tower.
APC-1 (NE, 0.67 Miles) - (East bank)
Located inside Little Gypsy Cooling Water Intake Structure fence.
Continuous sampler operation with sample collection bi-weekly, or more frequently if required by dust loading.
Radioiodine Canister - I-131 analysis bi-weekly.
Particulate Sampler - Gross beta radioactivity analysis following filter change. Gamma isotopic analysis of composite (by location) quarterly.
Radioiodine and Particulates One sample from the vicinity of a community having the highest calculated annual average ground level D/Q.
APP-1 (WNW, 0.84 Miles) - (West bank)
Located in soybean/sugarcane field on Short St. in Killona.
Radioiodine and Particulates One sample from a control location, as for example 15 -30 km distant and in the least prevalent wind direction.
APE-30 (E, 25.2 Miles) - (West bank)
Located on roof of Entergy Office building on Delaronde St. in Algiers. (Control)
Annual Radiological 2011 Environmental Operating Report Waterford 3 Steam Electric Station 6
Table 1.1 Radiological Environmental Sampling Program Exposure Pathway Requirement Sample Point Description, Distance and Direction Sampling and Collection Frequency Type and Frequency Of Analyses Direct Radiation TLDs An inner ring of stations, one in each meteorological sector in the general area of the SITE BOUNDARY.
A-2 (N, 1.27 Miles) - (East bank) Located on pole on LA 628 at Zephrin L. Perriloux Fire House.
B-1 (NNE, 0.75 Miles) - (East bank)
Located on fence west of Little Gypsy.
C-1 (NE, 0.67 Miles) - (East bank) Located on fence at Little Gypsy Cooling Water Intake structure.
D-2 (ENE, 1.24 Miles) - (East bank)
Located on pole on levee at west entrance to Bonnet Carre Spillway.
Quarterly Gamma dose quarterly.
Annual Radiological 2011 Environmental Operating Report Waterford 3 Steam Electric Station 7
Table 1.1 Radiological Environmental Sampling Program Exposure Pathway Requirement Sample Point Description, Distance and Direction Sampling and Collection Frequency Type and Frequency Of Analyses Direct Radiation TLDs An inner ring of stations, one in each meteorological sector in the general area of the SITE BOUNDARY.
E-1 (E, 0.41 Miles) - (West bank) Located on pole on LA 18 east of Waterford 3 plant entrance.
F-2 (ESE, 1.15 Miles) - (West bank) Located on fence on LA 3142 south of LA 18.
G-2 (SE, 1.26 Miles) - (West bank) Located on fence on LA 3142 north of railroad overpass.
H-2 (SSE, 1.54 Miles) - (West bank) Located on fence on LA 3142 north of LA 3127/3142 intersection.
Quarterly Gamma dose quarterly.
Annual Radiological 2011 Environmental Operating Report Waterford 3 Steam Electric Station 8
Table 1.1 Radiological Environmental Sampling Program Exposure Pathway Requirement Sample Point Description, Distance and Direction Sampling and Collection Frequency Type and Frequency Of Analyses Direct Radiation TLDs An inner ring of stations, one in each meteorological sector in the general area of the SITE BOUNDARY.
J-2 (S, 1.38 Miles) - (West bank) Located on fence south of LA 3127 west of LA 3127/3142 intersection.
K-1 (SSW, 1.06 Miles) - (West bank) Located on stop sign at entrance to Entergy Education Center on LA 3127.
L-1 (SW, 1.06 Miles) - (West bank) Located on gate on LA 3127 west of LA 3127/3142 intersection.
M-1 (WSW, 0.76 Miles) - (West bank)
Located on south gate of Waterford 1 and 2.
N-1 (W, 0.98 Miles) - (West bank) Located on pole at corner of Railroad Avenue and School House Road.
Quarterly Gamma dose quarterly.
Annual Radiological 2011 Environmental Operating Report Waterford 3 Steam Electric Station 9
Table 1.1 Radiological Environmental Sampling Program Exposure Pathway Requirement Sample Point Description, Distance and Direction Sampling and Collection Frequency Type and Frequency Of Analyses Direct Radiation TLDs An inner ring of stations, one in each meteorological sector in the general area of the SITE BOUNDARY.
P-1 (WNW, 0.84 Miles) - (West bank) Located on fence enclosing air sample station APP-1.
Q-1 (NW, 0.81 Miles) - (West bank) Located on fence enclosing air sample station APQ-1.
R-1 (NNW, 0.51 Miles) - (West bank) Located at Waterford 1 and 2 Cooling Water Intake Structure.
Quarterly Gamma dose quarterly.
TLDs An outer ring of stations, 1 in 10 of the meteorological sectors in the 6 to 8 km ranges from the site.
A-5 (N, 4.59 Miles) - (East bank) Located on pole at intersection of Oswald Avenue and US
- 61.
Annual Radiological 2011 Environmental Operating Report Waterford 3 Steam Electric Station 10 Table 1.1 Radiological Environmental Sampling Program Exposure Pathway Requirement Sample Point Description, Distance and Direction Sampling and Collection Frequency Type and Frequency Of Analyses Direct Radiation TLDs An outer ring of stations, 1 in 10 of the meteorological sectors in the 6 to 8 km ranges from the site.
B-4 (NNE, 3.75 Miles) - (East bank) Located on pole near weigh station on US 61.
D-5 (ENE, 4.09 Miles) - (East bank) Located on gate on shell road north of US61/LA48 intersection.
F-4 (ESE, 3.53 Miles) - (West bank) Located on pole behind house at 646 Aquarius St. in Hahnville.
Quarterly Gamma dose quarterly.
Annual Radiological 2011 Environmental Operating Report Waterford 3 Steam Electric Station 11 Table 1.1 Radiological Environmental Sampling Program Exposure Pathway Requirement Sample Point Description, Distance and Direction Sampling and Collection Frequency Type and Frequency Of Analyses Direct Radiation TLDs An outer ring of stations, 1 in 10 of the meteorological sectors in the 6 to 8 km ranges from the site.
E-5 (E, 4.08 Miles) - (East bank) Located on fence on Wesco Street off LA 48.
G-4 (SE, 3.30 Miles) - (West bank) Located on pole on LA 3160 north of railroad track.
H-8 (SSE, 8.13 Miles) - (West bank) Located on pole in front of Hahnville High School.
P-6 (WNW, 5.58 Miles) - (West bank) Located on fence at LA 640/railroad track intersection.
Q-5 (NW, 5.01 Miles) - (West bank) Located on pole on LA 18 across from Mississippi River marker 137.
Quarterly Gamma dose quarterly.
Annual Radiological 2011 Environmental Operating Report Waterford 3 Steam Electric Station 12 Table 1.1 Radiological Environmental Sampling Program Exposure Pathway Requirement Sample Point Description, Distance and Direction Sampling and Collection Frequency Type and Frequency Of Analyses Direct Radiation TLDs An outer ring of stations, 1 in 10 of the meteorological sectors in the 6 to 8 km ranges from the site.
R-6 (NNW, 5.52 Miles) - (East bank) Located on fence on LA 3223 near railroad crossing.
Quarterly Gamma dose quarterly.
TLDs The balance of the stations to be in special interest areas such as population centers, nearby residences, schools, and in 1 or 2 areas to serve as control stations.
F-9 (ESE, 8.18 Miles) - (East bank) Located on fence north of railroad tracks on Jonathan Street.
G-8 (SE, 7.74 Miles) - (West bank) Located on back fence of Luling Entergy Office.
E-15 (E, 11.7 Miles) - (East bank) Located on fence on Alliance Avenue.
Annual Radiological 2011 Environmental Operating Report Waterford 3 Steam Electric Station 13 Table 1.1 Radiological Environmental Sampling Program Exposure Pathway Requirement Sample Point Description, Distance and Direction Sampling and Collection Frequency Type and Frequency Of Analyses Direct Radiation TLDs The balance of the stations to be in special interest areas such as population centers, nearby residences, schools, and in 1 or 2 areas to serve as control stations.
J-15 (S, 11.7 Miles) - (West bank) Located on pole near LA 631/Hwy 90 intersection in Des Allemands.
E-30 (E, 25.2 Miles) - (West bank) Located at entrance to Entergy office on Delaronde St. in Algiers.
(Control)
Quarterly Gamma dose quarterly.
Waterborne Surface Water One sample upstream One sample downstream SWP-7 (WNW, 7.37 Miles) - (West bank) Located at St. John Parish Waterworks in Edgard. (Control)
SWF-2 (ESE, 1.51 Miles) - (West bank) Located at Dow Chemical Plant drinking water canal.
SWE-5 (E, 4.59 Miles) - (East bank) Located at St.
Charles Parish Waterworks in New Sarpy.
SWK-1 (SSW, 0.49 Miles) - (West bank) Located at 40 Arpent Canal south of the plant.
Composite sample over one quarter period.
Gamma isotopic analysis quarterly.
Composite for tritium analysis quarterly.
Annual Radiological 2011 Environmental Operating Report Waterford 3 Steam Electric Station 14 Table 1.1 Radiological Environmental Sampling Program Exposure Pathway Requirement Sample Point Description, Distance and Direction Sampling and Collection Frequency Type and Frequency Of Analyses Waterborne Drinking Water One sample upstream One sample downstream DWP-7 (WNW, 7.37 Miles) - (West bank) Located at St. John Parish Waterworks in Edgard. (Control)
DWF-2 (ESE, 1.51 Miles) - (West bank) Located at Dow Chemical Plant drinking water canal.
DWE-5 (E, 4.59 Miles) - (East bank) Located at St.
Charles Parish Waterworks in New Sarpy.
Composite sample over one month period when I-131 analysis is performed, quarterly composite otherwise.
I-131 analysis on each composite when the dose calculated for the consumption of the water is greater than one mrem per year. Composite for gross beta and gamma isotopic analyses quarterly. Composite for tritium analysis quarterly.
Sediment from Shoreline One sample upstream One sample downstream SHWQ-6 (NW, 5.99 Miles) - (East bank) Located on LA 628 east of Reserve ferry landing. (Control)
SHWE-3 (E, 2.99 Miles) - (West bank) Located at Foot Ferry landing on LA 18.
SHWK-1 (SSW, 0.49 Miles) - (West bank) Located at 40 Arpent Canal south of plant.
Annually Gamma isotopic analysis annually.
Ingestion Milk Samples from milking animals in the three locations within 5 km distance having the highest dose potential. If there are none, then, one sample from milking animals in each of the three areas between 5 to 8 km distant where doses are calculated to be greater than 1 mrem per year.
MKE-3 (E, 2.35 Miles) - (West bank) Located at the Zeringues house on LA 18 in Taft.
Quarterly Gamma isotopic and I-131 analysis quarterly.
Annual Radiological 2011 Environmental Operating Report Waterford 3 Steam Electric Station 15 Table 1.1 Radiological Environmental Sampling Program Exposure Pathway Requirement Sample Point Description, Distance and Direction Sampling and Collection Frequency Type and Frequency Of Analyses Ingestion Milk One sample from milking animals at a control location 15 - 30 km distant and in the least prevalent wind direction.
MKR-38 (NNW, 38.0 Miles) - (East bank) Located at 30300 Cleveland Road, Albany. La. (Control)
MKA-31 (N, 31.2 Miles) - (East bank) Located at 18736 Sisters Road, Ponchatoula, LA.
Quarterly Gamma isotopic and I-131 analysis quarterly.
Fish and Invertebrates One sample of each commercially and recreational important species in vicinity of plant discharge area.
One sample of same species in area not influenced by plant discharge.
FH-2 (Distance/Direction Not Applicable) -
Downstream of the plant discharge structure.
FH-3 (Distance/Direction Not Applicable) -
(Westbank) Waterways downstream of plant discharge directed to 40 Arpent Canal.
FH-1 (Distance/Direction Not Applicable) -
Upstream of the plant intake structure. (Control)
Sample in season, or annually if they are not seasonal Gamma isotopic analysis on edible portion.
Broadleaf Samples of one to three different kinds of broadleaf vegetation grown nearest each of two different off-site locations of highest predicted annual average ground level D/Q if milk sampling is not performed.
One sample of each of the similar broadleaf vegetation grown 15 - 30 km distant in the least prevalent wind direction if milk sampling is not performed.
BLQ-1 (NW, 0.83 Miles) - (West bank) Located near air sample station APQ-1.
BLB-1 (NNE, 0.81 Miles) - (East bank) Located west of Little Gypsy on LA 628.
BLE-20 (E, 19.7 Miles) - (West bank) Located on property of Nine Mile Point in Westwego. (Control)
Quarterly Gamma isotopic and I-131 analysis.
Annual Radiological 2011 Environmental Operating Report Waterford 3 Steam Electric Station 16 FIGURE 1-1
Annual Radiological 2011 Environmental Operating Report Waterford 3 Steam Electric Station 17 FIGURE 1-2
Annual Radiological 2011 Environmental Operating Report Waterford 3 Steam Electric Station 18 FIGURE 1-3
Annual Radiological 2011 Environmental Operating Report Waterford 3 Steam Electric Station 19 2.0 Interpretation and Trends of Results 2.1 Air Particulate and Radioiodine Sample Results Samples of airborne particulate and radioiodine were collected at four indicator locations and one control location and analyzed for gross beta radionuclides, Iodine-131 and gamma radionuclides (quarterly air particulate filter composites only). W3 did not detect any gamma radionuclides in the quarterly air particulate composites as has been the case in previous years. Iodine-131 was detected in air samples collected on 04-04-11 due to releases from Dai-lchi, Fukushima as explained in the summary on page 1. Indicator gross beta air particulate results for 2011 were similar to those background levels obtained in previous years of the operational REMP and well below preoperational levels as seen below. Results are reported as annual average pCi/m
- 3.
Monitoring Period Result Preoperational 0.080 1983 - 2010 0.020 2011 0.026 Table 3.1, which includes gross beta concentrations for 2011, provides a comparison of the indicator and control means further emphasizes that the airborne pathway continues to remain at background levels. In addition, as shown in Attachment 2, the standard "t" test was used to compare average gross beta activity from each indicator station to the average gross beta activity at the control station. The results from this test show the average activity detected at all indicator stations is statistically the same as the average activity detected at the control station. Therefore, W3 concluded that plant operations had no significant impact on this pathway during 2011.
2.2 Thermoluminescent Dosimetry Sample Results The average exposure rates during 2011 are consistent with those from the preoperational program and the previous five years of operation as seen in Figure 2-1. In particular, the preoperational survey indicates that exposure rates ranged between 11 and 33 mrem/standard quarter with an average of 20 mrem/standard quarter. The range during the previous five years of operation was 8 to 15 mrem/standard quarter with an average exposure rate of 12 mrem/standard quarter.
A comparison of the indicator results to the control results, as seen in Table 3.1, shows that the average indicator is slightly higher than that of the control. As shown in Attachment 1, Table 2.1, several indicator locations are higher than the control by a few mrem with a maximum difference of six mrem.
As shown in Attachment 2, Table 2.1, the standard t test was used to compare average exposure rates for TLD stations located in groups 0-2 miles and 2-5 miles from the plant to those
> 5 miles. The results indicate that the average exposure rates 0-2 miles from the plant are statistically the same as >5 miles while those 2-5 miles are statistically higher.
The differences between indicator locations and the control, and TLD stations grouped by distance from the plant are expected due to a variety of factors not related to W3 plant operations that can affect background radiation in the vicinity of each TLD station. Direct radiation measurements at each TLD station have remained statistically the same in 2011 as previous years of operation as evidenced on Attachment 2, Table 2.2. In addition, Radiological Gaseous Effluents for 2011 were only a small fraction of the limits and are not expected to have any impact on environmental TLD measurements.
Annual Radiological 2011 Environmental Operating Report Waterford 3 Steam Electric Station 20 2.3 Water Sample Results Analytical results for 2011 drinking/surface water samples were similar to those reported in previous years.
Drinking/Surface Water Drinking water samples also serve as surface water samples for W3. Therefore, monthly and quarterly gamma spectroscopy and tritium analyses of drinking water also satisfy the surface water sampling requirement.
Composite drinking/surface water samples were collected from two indicators and one control location and analyzed for Iodine-131, gamma radionuclides and tritium. Results indicate that all measurements were below the calculated LLDs.
Although gross beta was detected in the drinking/surface water samples, results for the indicator locations were below previous operational and preoperational years as seen below. Results are reported as annual average pCi/l.
Monitoring Period Result Preoperational 7.0 1983 - 2010 4.6 2011 4.7 Table 3.1, which includes gross beta concentrations for 2011, provides a comparison of the indicator and control means shows that the waterborne pathway continues to remain at background levels. In addition, as shown in Attachment 2, the standard "t" test was used to compare average gross beta activity from indicator stations to the average gross beta activity from the control station. The results from the test show the average activity detected at one indicator station is statistically the same as the average activity detected at the control station and one indicator station is statistically higher than the mean for the control location. Results obtained are consistent with historical data stated above. Therefore, W3 concluded that plant operations had no significant impact on this pathway during 2011.
Surface Water Surface water samples were collected from one indicator location and analyzed for gamma radionuclides and tritium. Results indicate that all measurements were below the calculated LLDs. Therefore, W3 concluded that plant operations had no significant impact on this pathway during 2011.
2.4 Sediment Sample Results Sediment samples were collected from two indicator locations and one control location and analyzed for gamma radionuclides. Results indicate that all measurements were below the calculated LLDs. Therefore, W3 concluded that plant operations had no significant impact on this pathway during 2011.
Annual Radiological 2011 Environmental Operating Report Waterford 3 Steam Electric Station 21 2.5 Milk Sample Results Since milk samples for indicator location MKE-3 were unavailable for all quarters of 2011, broad leaf vegetation sampling was performed as required by TRM Table 3.12-1. Broad leaf vegetation results are in section 2.7. Milk samples were collected from one control location and analyzed for Iodine-131 and gamma radionuclides. Results from Iodine-131 analyses indicate that all measurements were below the calculated LLDs. Cesium-137 was detected in one control sample MKA-31 on 06-16-11 at a concentration of 6.05 pCi/l. The sample was recounted on 06-16-11 with results of 5.88 pCi/l. Another sample was collected on 06-23-11 and analyzed. Cesium-137 was detected at a concentration of 4.03 pCi/l. The levels of Cesium-137 in these samples are below both the reporting level and the LLD level required by Waterford 3 TRM. Therefore, W3 concluded that plant operations had no significant impact on this pathway during 2011.
2.6 Fish Sample Results Fish samples were collected from two indicators and one control location and analyzed for gamma radionuclides. Results indicate that all measurements were below the calculated LLDs.
Therefore, W3 concluded that plant operations had no significant impact on this pathway during 2011.
2.7 Broadleaf Vegetation Sample Results Broadleaf vegetation samples were collected from two indicators and one control location and analyzed for Iodine-131 and gamma radionuclides. Results indicate that all measurements were below the calculated LLDs. Therefore, W3 concluded that plant operations had no significant impact on this pathway during 2011.
2.8 Land Use Census Results In compliance with the Waterford 3 ODCM and TRM, the land use census was conducted September 28 - September 30, 2010. The nearest residence, garden, beef cow, food product and milk animal in each sector within a five mile radius of the plant was located by visual inspection and verbal inquiry.
One new residence location (sector P) and four new garden locations (sectors C, N, P, and Q) were identified in 2010. One milk cow location (sector A), one goat location (sector Q) and four beef cow locations (sectors P and Q) were removed. Food product locations remained unchanged for 2010. Based upon the locations identified in this survey, the locations identified in previous surveys and the locations currently being used to calculate dose commitments from liquid and gaseous effluents released from W3, no REMP sampling location changes are necessary. Results of the 2010 biennial census are shown in Table 2.1.
2.9 Interlaboratory Comparison Results The River Bend Station Environmental Laboratory analyzed interlaboratory comparison samples for W3 to fulfill the requirements of Section 5.7.2 of the ODCM. Attachment 1 contains these results.
Annual Radiological 2011 Environmental Operating Report Waterford 3 Steam Electric Station 22 TABLE 2.1 Biennial Land Use Census Results Sector Direction Distance from Plant in Miles Milk Beef Food Residence Garden Cows Cows Goats Products A
N 1.3 1.7
^
4.8
^
4.1 B
NNE 1.1 1.3
^
^
^
1.3 C
NE 0.9 1.0
^
^
^
^
D ENE 0.9 0.9
^
^
^
^
E E
2.2 2.2
- 2.3 2.3
- 3.2 0.3 F
ESE 3.1 2.2
^
2.3
^
0.3 G
SE 4.0 4.1
^
2.4
^
0.3 H
^
^
^
^
^
0.3 J
S
^
^
^
^
^
0.5 K
^
^
^
^
^
0.5 L
^
^
^
^
^
0.5 M
WSW
^
1.4
^
1.2
^
0.5 N
W 1.0 1.1
^
1.0
^
0.6 P
WNW 0.9 0.9
^
^
^
0.6 Q
NW 0.9 1.0
^
^
^
0.6 R
NNW 3.0 3.0
^
4.9
^
2.6
^ Indicates that nothing was found in the sector within a five mile radius of Waterford 3
- Animals were located at this distance from Waterford 3, but the milk is not currently used for human consumption
- Samples are being obtained from animals at this location (MKE-3) for REMP
Annual Radiological 2011 Environmental Operating Report Waterford 3 Steam Electric Station 23 FIGURE 2-1
Annual Radiological 2011 Environmental Operating Report Waterford 3 Steam Electric Station 24 3.0 Radiological Environmental Monitoring Program Summary 3.1 2011 Program Results Summary Table 3.1 summarizes the 2011 REMP results. W3 did not use values reported as less than the lower limit of detection (< LLD) when determining ranges and means for indicator and control locations.
Annual Radiological 2011 Environmental Operating Report Waterford 3 Steam Electric Station 25 TABLE 3.1 Radiological Environmental Monitoring Program Summary Name of Facility: Waterford 3 SES Docket No: 50-382 Location of Facility: St. Charles, Louisiana Reporting Period: January - December 2011 Sample Type
( Units )
Type & Number Of Analyses a LLD b Indicator Locations Mean ( F ) c
[ Range ]
Location with Highest Annual Mean Control Locations Mean ( F ) c
[ Range ]
Number of Nonroutine Results e Location d Mean ( F ) c
[ Range ]
Airborne Particulates
( pCi/m3 )
GB 130 GS 20 Cs-134 Cs-137 0.01 0.05 0.06 0.026 ( 104 / 104 )
[ 0.013 - 0.039 ]
<LLD
<LLD APQ-1 (NW, 0.81 mi.)
N/A N/A 0.026 ( 26 / 26 )
[ 0.013 - 0.039 ]
N/A N/A 0.027 ( 26 / 26 )
[ 0.015 - 0.038 ]
<LLD
<LLD 0
0 0
Airborne Iodine
( pCi/m3 )
I-131 130 0.07 0.092 (4/104)
[0.087 - 0.101]
APF-1 (ESE, 0.35 mi.)
0.101 (1/26) 0.1165 (1/26) 0 Indicator TLDs
( mrem/Std. Qtr )
Control TLDs
( mrem/Std. Qtr )
Gamma 120 Gamma 4 (f)
(f) 12 ( 108 / 120 )
[ 9.2 - 16.3 ]
N/A F-4 (ESE, 3.53 mi.)
N/A 15 ( 4 / 4 )
[ 14.0 - 15.6 ]
N/A N/A 10 ( 4 / 4 )
[ 10.1 - 10.7]
0 0
Annual Radiological 2011 Environmental Operating Report Waterford 3 Steam Electric Station 26 TABLE 3.1 Radiological Environmental Monitoring Program Summary Name of Facility: Waterford 3 SES Docket No: 50-382 Location of Facility: St. Charles, Louisiana Reporting Period: January - December 2011 Sample Type
( Units )
Type & Number of Analyses a LLD b Indicator Location Mean ( F ) c
[ Range ]
Location with Highest Annual Mean Control Locations Mean ( F ) c
[ Range ]
Number of Nonroutine Results e Location d Mean ( F ) c
[ Range ]
Surface Water &
Drinking Water
( pCi/l )
Gross Beta 12 I-131 40 H-3 12 GS 12 Mn-54 Fe-59 Co-58 Co-60 Zn-65 Zr-95 Nb-95 Cs-134 Cs-137 Ba-140 La-140 4
1 2000 15 30 15 15 30 15 15 15 18 15 15 4.7 ( 7 / 8 )
[ 1.8 - 8.6 ]
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD DWF/SWF-2 (ESE, 1.51 mi.)
N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A 6.4 ( 4 / 4 )
[4.9 - 8.6]
N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A 2.9 ( 3 / 4 )
[ 1.7 - 3.5 ]
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD 0
0 0
0 0
0 0
0 0
0 0
0 0
0
Annual Radiological 2011 Environmental Operating Report Waterford 3 Steam Electric Station 27 TABLE 3.1 Radiological Environmental Monitoring Program Summary Name of Facility: Waterford 3 SES Docket No: 50-382 Location of Facility: St. Charles, Louisiana Reporting Period: January - December 2011 Sample Type
( Units )
Type &
Number of Analyses a LLD b Indicator Locations Mean ( F ) c
[ Range ]
Location with Highest Annual Mean Control Locations Mean ( F ) c
[ Range ]
Number of Nonroutine Results e Location d Mean ( F ) c
[ Range ]
Surface Water
( pCi/l )
H-3 4 GS 13 Mn-54 Fe-59 Co-58 Co-60 Zn-65 Zr-95 Nb-95 Cs-134 Cs-137 Ba-140 La-140 I-131 3000 15 30 15 15 30 15 15 15 18 15 15 15
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A 0
0 0
0 0
0 0
0 0
0 0
0 0
Shoreline Sediment
( pCi/kg dry)
GS 3 Cs-134 Cs-137 150 180
<LLD
<LLD N/A N/A N/A N/A
<LLD
<LLD 0
0
Annual Radiological 2011 Environmental Operating Report Waterford 3 Steam Electric Station 28 TABLE 3.1 Radiological Environmental Monitoring Program Summary Name of Facility: Waterford 3 SES Docket No: 50-382 Location of Facility: St. Charles, Louisiana Reporting Period: January - December 2011 Sample Type
( Units )
Type & Number of Analyses a LLD b Indicator Location Mean ( F ) c
[ Range ]
Location with Highest Annual Mean Control Locations Mean ( F ) c
[ Range ]
Number of Nonroutine Results e Location d Mean ( F ) c
[ Range ]
Milk
( pCi/l )
I-131 5 GS 5 Cs-134 Cs-137 Ba-140 La-140 1
15 18 15 15
< LLD
< LLD
< LLD
< LLD
< LLD N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A
<LLD
<LLD 5.04 (2/5)
[4.03 - 6.05]
<LLD
<LLD 0
0 0
0 0
Fish
( pCi/kg wet )
GS 12 Mn-54 Fe-59 Co-58 Co-60 Zn-65 Cs-134 Cs-137 130 260 130 130 260 130 150
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD 0
0 0
0 0
0 0
Broadleaf Vegetation
( pCi/kg wet )
I-131 12 GS 12 Cs-134 Cs-137 60 60 80
<LLD
<LLD
<LLD N/A N/A N/A N/A N/A N/A
<LLD
<LLD
<LLD 0
0 0
a GB = Gross beta; I-131 = Iodine-131; H-3 = Tritium; GS = Gamma scan.
b LLD = required lower limit of detection based on Waterford 3 TRM.
c Mean and range based upon detectable measurements only. Fraction of detectable measurements at specified locations is indicated in parenthesis (F).
d Locations are specified (1) by name and (2) degrees relative to reactor site.
e Non-routine results are those which exceed ten times the control station value. If no control station value is available, the result is considered non-routine if it exceeds ten times the preoperational value for the location.
f LLD is not defined in Waterford 3 TRM.
Annual Radiological 2011 Environmental Operating Report Waterford 3 Steam Electric Station 29 2011 Radiological Monitoring Report Summary of Monitoring Results
Annual Radiological 2011 Environmental Operating Report Waterford 3 Steam Electric Station 30 TABLE OF CONTENTS TABLE 1.1 AIR PARTICULATE FILTER 31 TABLE 1.2 RADIOIODINE CARTRIDGE 32 TABLE 1.3 AIR PARTICULATE FILTER 33 TABLE 2.1 THERMOLUMINESCENT DOSIMETERS 34 TABLE 3.1 DRINKING/SURFACE WATER 35 TABLE 3.2 DRINKING/SURFACE WATER 36 TABLE 3.3 DRINKING/SURFACE WATER 37 TABLE 3.4 DRINKING/SURFACE WATER 38 TABLE 3.5 SURFACE WATER 39 TABLE 4.1 SEDIMENT 40 TABLE 5.1 MILK 41 TABLE 6.1 FISH 42 TABLE 7.1 BROADLEAF VEGETATION 43 TABLE 8.1 INTERLABORATORY COMPARISON 44
Annual Radiological 2011 Environmental Operating Report Waterford 3 Steam Electric Station 31 Table 1.1 Sample Type: Air Particulate Filter Analysis: Gross Beta Units: pCi/m3 End Date APF-1 APQ-1 APP-1 APC-1 APE-30 (Indicator)
(Indicator)
(Indicator)
(Indicator)
(Control)
Required LLD 0.01 0.01 0.01 0.01 0.01 01-10-11 01-24-11 02-07-11 02-21-11 03-07-11 03-21-11 04-04-11 04-19-11 05-03-11 05-17-11 05-31-11 06-13-11 06-27-11 07-11-11 07-25-11 08-08-11 08-22-11 09-06-11 09-19-11 10-03-11 10-17-11 11-01-11 11-14-11 11-28-11 12-12-11 12-28-11 0.031 0.034 0.028 0.026 0.020 0.023 0.032 0.021 0.020 0.024 0.022 0.029 0.019 0.020 0.014 0.015 0.026 0.029 0.033 0.025 0.033 0.035 0.027 0.022 0.030 0.025 0.033 0.034 0.028 0.026 0.022 0.024 0.033 0.021 0.020 0.022 0.023 0.032 0.020 0.020 0.013 0.015 0.027 0.031 0.034 0.027 0.032 0.039 0.029 0.020 0.030 0.027 0.032 0.034 0.029 0.025 0.022 0.023 0.036 0.023 0.019 0.023 0.025 0.030 0.020 0.021 0.013 0.016 0.029 0.029 0.034 0.026 0.032 0.035 0.027 0.020 0.028 0.026 0.031 0.032 0.027 0.024 0.021 0.023 0.035 0.021 0.018 0.023 0.021 0.030 0.016 0.020 0.014 0.016 0.028 0.030 0.033 0.027 0.032 0.035 0.026 0.021 0.030 0.025 0.034 0.035 0.029 0.024 0.022 0.024 0.037 0.023 0.020 0.024 0.024 0.031 0.023 0.022 0.015 0.018 0.029 0.029 0.034 0.026 0.034 0.038 0.026 0.020 0.034 0.026
Annual Radiological 2011 Environmental Operating Report Waterford 3 Steam Electric Station 32 Table 1.2 Sample Type: Radioiodine Cartridge Analysis: Iodine-131 Units: pCi/m3 End Date APF-1 APQ-1 APP-1 APC-1 APE-30 (Indicator)
(Indicator)
(Indicator)
(Indicator)
(Control)
Required LLD 0.07 0.07 0.07 0.07 0.07 01-10-11 01-24-11 02-07-11 02-21-11 03-07-11 03-21-11
- 04-04-11 04-19-11 05-03-11 05-17-11 05-31-11 06-13-11 06-27-11 07-11-11 07-25-11 08-08-11 08-22-11 09-06-11 09-19-11 10-03-11 10-17-11 11-01-11 11-14-11 11-28-11 12-12-11 12-28-11
< 0.014
< 0.019
< 0.015
< 0.014
< 0.018
< 0.016 0.1010
< 0.018
< 0.017
< 0.015
< 0.018
< 0.020
< 0.016
< 0.012
< 0.014
< 0.017
< 0.014
< 0.013
< 0.012
< 0.015
< 0.013
< 0.012
< 0.016
< 0.016
< 0.011
< 0.013
< 0.017
< 0.017
< 0.013
< 0.026
< 0.014
< 0.016 0.0898
< 0.016
< 0.017
< 0.015
< 0.013
< 0.015
< 0.012
< 0.018
< 0.010
< 0.012
< 0.013
< 0.012
< 0.013
< 0.011
< 0.012
< 0.010
< 0.014
< 0.012
< 0.015
< 0.012
< 0.015
< 0.017
< 0.013
< 0.026
< 0.014
< 0.016 0.0898
< 0.016
< 0.017
< 0.015
< 0.013
< 0.015
< 0.012
< 0.018
< 0.010
< 0.012
< 0.013
< 0.012
< 0.013
< 0.011
< 0.012
< 0.010
< 0.014
< 0.012
< 0.015
< 0.012
< 0.013
< 0.011
< 0.013
< 0.009
< 0.012
< 0.016 0.0867
< 0.018
< 0.014
< 0.013
< 0.014
< 0.011
< 0.011
< 0.015
< 0.014
< 0.014
< 0.011
< 0.012
< 0.011
< 0.012
< 0.011
< 0.010
< 0.015
< 0.014
< 0.015
< 0.013
< 0.014
< 0.012
< 0.019
< 0.014
< 0.028
< 0.019 0.1165
< 0.017
< 0.017
< 0.012
< 0.012
< 0.016
< 0.009
< 0.014
< 0.014
< 0.015
< 0.015
< 0.014
< 0.018
< 0.013
< 0.014
< 0.013
< 0.017
< 0.015
< 0.013
< 0.015
- Dai-Ichi, Fukushima (see page 1)
Annual Radiological 2011 Environmental Operating Report Waterford 3 Steam Electric Station 33 Table 1.3 Sample Type: Air Particulate Filter Analysis: Gamma Isotopic Units: pCi/m3 Location Quarterly Cs-134 Cs-137 Composite Required LLD 0.05 0.06 APF-1 (Indicator) 1st
< 0.003
< 0.002 APQ-1 (Indicator) 1st
< 0.002
< 0.002 APP-1 (Indicator) 1st
< 0.002
< 0.003 APC-1 (Indicator) 1st
< 0.003
< 0.002 APE-30 (Control) 1st
< 0.002
< 0.003 APF-1 (Indicator) 2nd
< 0.003
< 0.002 APQ-1 (Indicator) 2nd
< 0.002
< 0.002 APP-1 (Indicator) 2nd
< 0.003
< 0.002 APC-1 (Indicator) 2nd
< 0.003
< 0.002 APE-30 (Control) 2nd
< 0.003
< 0.003 APF-1 (Indicator) 3rd
< 0.001
< 0.002 APQ-1 (Indicator) 3rd
< 0.002
< 0.002 APP-1 (Indicator) 3rd
< 0.001
< 0.002 APC-1 (Indicator) 3rd
< 0.001
< 0.001 APE-30 (Control) 3rd
< 0.001
< 0.001 APF-1 (Indicator) 4th
< 0.002
< 0.002 APQ-1 (Indicator) 4th
< 0.001
< 0.002 APP-1 (Indicator) 4th
< 0.001
< 0.002 APC-1 (Indicator) 4th
< 0.002
< 0.002 APE-30 (Control) 4th
< 0.001
< 0. 002
Annual Radiological 2011 Environmental Operating Report Waterford 3 Steam Electric Station 34 Table 2.1 Sample Type: Thermoluminescent Dosimeters Analysis: Gamma Dose Units: mrem/Std. Qtr.
Indicator Locations Station 1st Qtr '11 2nd Qtr '11 3rd Qtr '11 4th Qtr '11 Annual Mean '11 A-2 13 (2) 14 16 14 A-5 12 15 (2) 12 13 B-1 13 (2) 13 14 13 B-4 13 (2) 15 15 14 C-1 10 9
10 (2) 10 D-2 10 (2) 10 10 10 D-5 12 13 13 12 13 E-1 11 12 13 11 12 E-5 13 13 (2) 13 13 E-15 10 11 11 11 11 F-2 12 13 13 13 13 (1) F-4 14 16 15 15 15 F-9 12 13 13 12 13 G-2 13 15 14 14 14 G-4 (2) 12 12 12 12 G-8 (2)
(2) 11 (2) 11 H-2 13 14 12 12 13 H-8 12 12 12 12 12 J-2 12 13 12 11 12 J-15 12 14 13 12 13 K-1 10 11 12 11 11 L-1 14 14 15 14 14 M-1 11 11 11 10 11 N-1 13 15 14 13 14 P-1 10 11 10 10 10 P-6 14 15 14 14 14 Q-1 13 14 14 13 13 Q-5 (2) 13 13 13 13 R-1 10 10 9
10 10 R-6 10 11 11 10 10 Control Location Station 1st Qtr '11 2nd Qtr '11 3rd Qtr '11 4th Qtr '11 Annual Mean '11 E-30 10 11 11 10 10 (1) Location with highest annual mean (2) No data - TLDs missing at time of exchange
Annual Radiological 2011 Environmental Operating Report Waterford 3 Steam Electric Station 35 Table 3.1 Sample Type: Drinking/Surface Water Analysis: Gross Beta Units: pCi/l Quarterly DWF/SWF-2 DWE/SWE-5 DWP/SWP-7 Composite (Indicator)
(Indicator)
(Control)
Required LLD 4
4 4
1st`
8.57 2.83 3.52 2nd 6.01
<1.75
<1.75 3rd 6.00 2.95 3.46 4th 4.93 1.75
< 0.99
Annual Radiological 2011 Environmental Operating Report Waterford 3 Steam Electric Station 36 Table 3.2 Sample Type: Drinking/Surface Water Analysis: Iodine-131 Units: pCi/l Collection SWK-1 DWF/SWF-2 DWE/SWE-5 DWP/SWP-7 Date (Indicator)
(Indicator)
(Indicator)
(Control)
LLD 15 1
1 1
(1) 01-05-11 02-02-11 03-01-11 03-29-11 04-26-11 05-25-11 06-22-11 07-20-11 08-17-11 09-14-11 10-12-11 11-09-11 12-06-11 01-04-12
< 4.70
< 4.59
< 5.33
< 5.15
< 4.85
< 5.13
< 5.46
< 4.80
< 5.02
< 4.79
< 5.09
< 4.75
< 3.50
< 0.90
< 0.90
< 0.84
< 0.81
< 0.84
< 0.90
< 0.83
< 0.84
< 0.89
< 0.75
< 0.99
< 0.85
< 0.46
< 0.73
< 0.82
< 0.89
< 0.89
< 0.78
< 0.89
< 0.90
< 0.86
< 0.97
< 0.75
< 0.96
< 0.71
< 0.57
< 0.78
< 0.90
< 0.90
< 0.89
< 0.89
< 0.86
< 0.81
< 0.81
< 0.83
< 0.99
< 0.67
< 0.99
< 0.93
< 0.55 (1) Duplicate sample
Annual Radiological 2011 Environmental Operating Report Waterford 3 Steam Electric Station 37 Table 3.3 Sample Type: Drinking/Surface Water Analysis: Gamma Isotopic Units: pCi/l Location Collection Mn-54 Co-58 Fe-59 Co-60 Zn-65 Nb-95 Zr-95 Cs-134 Cs-137 Ba-140 La-140 Date Required LLD 15 15 30 15 30 15 15 15 18 15 15 DWF/SWF-2 (Indicator) 1st
< 2.64
< 2.42
< 5.60
< 2.18
< 4.84
< 3.26
< 4.55
< 2.56
< 2.45
< 14.95
< 6.17 DWE/SWE-5 (Indicator) 1st
< 1.97
< 2.06
< 5.09
< 1.93
< 3.90
< 2.52
< 3.60
< 2.10
< 2.05
< 14.04
< 4.78 DWP/SWP-7 (Control) 1st
< 2.80
< 2.59
< 6.04
< 2.50
< 4.35
< 3.19
< 4.79
< 2.79
< 2.55
< 14.96
< 6.64 DWF/SWF-2 (Indicator) 2nd
< 4.46
< 4.18
< 8.95
< 5.31
< 9.27
< 5.81
< 6.41
< 3.87
< 3.89
< 14.88
< 8.55 DWE/SWE-5 (Indicator) 2nd
< 2.57
< 2.35
< 5.31
< 2.57
< 5.79
< 3.25
< 4.77
< 2.82
< 2.71
< 12.75
< 4.34 DWP/SWP-7 (Control) 2nd
< 3.22
< 2.88
< 5.39
< 3.37
< 5.37
< 4.30
< 6.11
< 3.34
< 3.05
< 14.60
< 5.76 DWF/SWF-2 (Indicator) 3rd
< 2.82
<2.95
< 5.20
< 2.74
< 6.12
< 3.41
< 5.07
< 2.63
< 3.24
< 14.70
< 5.57 DWE/SWE-5 (Indicator) 3rd
< 4.75
< 3.93
< 7.30
< 4.61
< 9.95
< 4.89
< 9.30
< 5.47
< 4.80
< 14.97
< 5.26 DWP/SWP-7 (Control) 3rd
< 3.53
< 3.43
< 9.05
< 3.70
< 8.64
< 4.52
<6.97
< 2.98
< 4.77
< 14.96
< 6.70 DWF/SWF-2 (Indicator) 4th
< 3.26
< 3.02
< 6.12
< 3.39
< 6.51
< 3.69
< 5.27
< 3.23
< 3.46
< 13.20
< 5.88 DWE/SWE-5 (Indicator) 4th
< 2.22
< 2.70
< 5.38
< 2.35
< 5.20
< 3.52
< 5.01
< 2.63
< 2.65
< 13.74
< 5.15 DWP/SWP-7 (Control) 4th
< 2.73
< 2.79
< 3.95
< 1.97
< 5.79
< 2.87
< 4.72
< 2.91
< 2.99
< 13.00
< 4.29
Annual Radiological 2011 Environmental Operating Report Waterford 3 Steam Electric Station 38 Table 3.4 Sample Type: Drinking/Surface Water Analysis: Tritium Units: pCi/l Quarter DWF/SWF-2 DWE/SWE-5 SWK-1 DWP/SWP-7 (Indicator)
(Indicator)
(Indicator)
(Control)
Required LLD 2000 2000 3000 2000 1st 2nd 3rd 4th
< 441.26
< 415.74
< 629.71
< 647.28
< 407.59
< 431.00
< 634.91
< 655.76
< 425.70
< 446.73
< 634.37
< 652.44
< 456.77
< 395.55
< 668.46
< 692.83
Annual Radiological 2011 Environmental Operating Report Waterford 3 Steam Electric Station 39 Table 3.5 Sample Type: Surface Water Analysis: Gamma Isotopic Units: pCi/l Location Collection Mn-54 Co-58 Fe-59 Co-60 Zn-65 Nb-95 Zr-95 Cs-134 Cs-137 Ba-140 La-140 Date Required LLD 15 15 30 15 30 15 15 15 18 15 15 SWK-1 (Indicator) 02-02-11 03-01-11 03-29-11 04-26-11 05-25-11 06-22-11 07-20-11 08-17-11 09-14-11 10-12-11 11-09-11 12-06-11 01-04-12
< 2.67
< 3.25
< 4.71
< 5.52
< 3.45
< 2.98
< 2.87
< 4.02
< 3.84
< 3.18
< 4.70
< 3.74
< 3.72
< 2.69
< 2.85
< 3.74
< 4.35
< 4.14
< 2.90
< 3.46
< 3.92
< 4.01
< 2.69
< 4.95
< 3.62
< 2.94
< 5.50
< 7.80
< 6.59
< 9.53
< 5.79
< 5.25
< 6.64
< 7.76
< 8.88
< 5.38
< 12.40
< 4.60
< 5.76
< 2.73
< 3.58
< 5.01
< 4.78
< 4.00
< 3.02
< 3.13
< 4.37
< 4.07
< 4.34
< 5.16
< 3.24
< 4.28
< 7.17
< 7.52
< 9.49
<11.34
< 7.58
< 6.31
< 8.41
<11.18
< 7.76
< 9.60
< 8.90
< 7.45
< 6.41
< 3.95
< 3.09
< 4.58
< 5.36
< 4.35
< 3.74
< 4.30
< 4.24
< 4.23
< 3.44
< 5.04
< 3.89
< 4.55
< 5.64
< 4.44
< 6.22
< 6.86
< 6.14
< 5.45
< 6.02
< 6.93
< 7.31
< 7.08
< 9.08
< 6.52
< 5.94
< 2.69
< 3.60
< 4.18
< 4.35
< 3.76
< 3.09
< 3.51
< 4.02
< 3.26
< 3.67
< 4.99
< 3.57
< 3.76
< 3.33
< 3.33
< 4.56
< 4.19
< 4.34
< 3.20
< 3.71
< 5.45
< 4.35
< 3.54
< 3.91
< 3.57
< 3.93
< 13.89
< 13.60
< 14.57
< 14.65
< 14.91
< 13.89
< 14.59
< 14.36
< 13.40
< 14.40
< 14.50
< 14.97
< 14.10
< 5.50
< 4.60
< 6.19
< 3.98
< 5.06
< 5.95
< 5.21
< 4.38
< 4.08
< 4.39
< 5.65
< 5.45
< 6.12
Annual Radiological 2011 Environmental Operating Report Waterford 3 Steam Electric Station 40 Table 4.1 Sample Type: Sediment Analysis: Gamma Isotopic Units: pCi/kg (dry)
Location Collection Cs-134 Cs-137 Date Required LLD 150 180 SHWK-1 (Indicator) 03-07-11
< 21.1
< 22.0 SHWE-3 (Indicator) 03-07-11
< 27.1
< 34.4 SHWQ-6 (Control) 03-07-11
< 21.0
< 19.6
Annual Radiological 2011 Environmental Operating Report Waterford 3 Steam Electric Station 41 Table 5.1 Sample Type: Milk Analysis: Iodine-131 and Gamma Isotopic Units: pCi/l Location Collection I-131 Cs-134 Cs-137 Ba-140 La-140 Date Required LLD 1
15 18 15 15 MKE-3 (Indicator)
MKA-31 (Control)
(1) 03-17-11 (1) 06-16-11 (1) 09-15-11 (1) 12-15-11 03-17-11 06-16-11 (2) 06-16-11 (3) 06-23-11 09-15-11 12-15-11 n/a n/a n/a n/a
< 0.79
< 0.89
<0.90
< 0.92
< 0.81 n/a n/a n/a n/a
< 3.56
< 3.69
< 2.86
< 2.74
< 3.42
< 3.78 n/a n/a n/a n/a
<4.00 6.05 5.88 4.03
< 4.23
< 5.14 n/a n/a n/a n/a
< 13.89
< 14.90
< 11.55
< 13.91
< 14.80
< 14.10 n/a n/a n/a n/a
< 4.96
< 4.14
< 3.19
< 4.01
< 5.06
< 4.12 (1) Sample not available. Cows not producing enough milk. See page 2 for details.
(2) Recount of sample taken on 06-16-11 to verify Cs-137 result.
(3) Resample of location to verify Cs-137 result.
Annual Radiological 2011 Environmental Operating Report Waterford 3 Steam Electric Station 42 Table 6.1 Sample Type: Fish Analysis: Gamma Isotopic Units: pCi/kg (wet)
Location Collection Species Mn-54 Co-58 Fe-59 Co-60 Zn-65 Cs-134 Cs-137 Date Required LLD 130 130 260 130 260 130 150 FH-1 (Control) 12-07-11 Buffalo Carp Catfish Drum
< 10.60
< 11.50
< 7.06
< 9.47
< 11.60
< 13.50
< 8.98
< 9.66
< 38.30
< 34.30
< 23.70
< 32.10
< 13.60
< 12.90
< 9.58
< 8.62
< 24.80
< 24.10
< 22.60
< 28.60
< 9.68
< 7.70
< 5.96
< 7.73
< 6.11
< 5.97
< 7.77
< 6.38 FH-2 (Indicator) 11-22-11 Buffalo Carp Catfish Shad
< 10.20
< 10.60
< 7.87
< 10.90
< 13.40
< 13.50
< 9.61
< 14.30
< 36.30
< 34.90
< 25.70
< 40.90
< 9.41
< 11.30
< 8.24
< 9.64
< 26.90
< 21.40
< 15.70
< 27.50
< 8.90
< 8.12
< 4.70
< 9.45
< 8.49
< 8.23
< 6.42
< 7.56 FH-3 (Indicator) 12-05-11 Buffalo Carp Catfish Mullet
< 9.14
< 10.20
< 8.50
< 9.07
< 11.70
< 12.90
< 10.20
< 14.20
< 28.50
< 38.30
< 34.30
< 40.10
< 8.36
< 11.30
< 7.42
< 10.40
< 28.40
< 20.90
< 24.30
< 25.60
< 7.52
< 9.49
< 4.57
< 7.16
< 9.85
< 10.50
< 7.59
< 10.10
Annual Radiological 2011 Environmental Operating Report Waterford 3 Steam Electric Station 43 Table 7.1 Sample Type: Broad Leaf Vegetation Analysis: Iodine-131 and Gamma Isotopic Units: pCi/kg (wet)
Location Collection I-131 Cs-134 Cs-137 Date Required LLD 60 60 80 BLQ-1 (Indicator) 03-16-11
< 57.28
< 36.11
< 41.65 BLQ-1 (Indicator) 06-15-11
< 54.04
< 41.87
< 41.15 BLQ-1 (Indicator) 09-12-11
< 41.00
< 25.30
< 32.90 BLQ-1 (Indicator) 12-14-11
< 26.50
< 30.20
< 32.40 BLB-1 (Indicator) 03-16-11
< 58.17
< 50.83
< 40.53 BLB-1 (Indicator) 06-15-11
< 55.08
< 58.12
< 62.16 BLB-1 (Indicator) 09-12-11
< 56.90
< 26.00
< 36.50 BLB-1 (Indicator) 12-14-11
< 29.00
< 36.40
< 33.60 BLE-20 (Control) 03-16-11
< 59.46
< 44.03
< 49.84 BLE-20 (Control) 06-15-11
< 59.43
< 59.08
< 31.48 BLE-20 (Control) 09-12-11
< 36.50
< 22.40
< 34.10 BLE-20 (Control) 12-14-11
< 22.90
< 17.00
< 21.00
Annual Radiological 2011 Environmental Operating Report Waterford 3 Steam Electric Station 44 Table 8.1 Sample Type: Interlaboratory Comparison Analysis: Gross Beta, Iodine-131, Tritium and Gamma Isotopic Units: pCi/kg (wet)
Calendar Year: 2011 1
st Quarter dated Mar 17, 2011 Analytics E7481-125 Gross Beta in Water Range of 0.80 to 1.25 Nuclide RBS Mean pCi/L RBS 1-s pCi/L Ref Lab Value pCi/L Ref Lab uncertainty pCi/L Resolution RBS/Ref Lab Ratio Pass/
Fail Cs-137 199 19 247 4.13 59.8 0.80 Pass 3
rd Quarter dated Sept. 15, 2011 Analytics E8137-125 Gross Beta filter Range of 0.80 to 1.25 Nuclide RBS Mean pCi/filter RBS 1-s pCi/filter Ref Lab Value pCi/filter Ref Lab uncertainty pCi/filter Resolution RBS/Ref Lab Ratio Pass/
Fail Cs-137 84.2 1.41 82.1 1.37 59.9 1.03 Pass Analytics E8136-125 H-3 in water Range of 0.80 to 1.25 Nuclide RBS Mean pCi/L RBS 1-s pCi/L Ref Lab Value pCi/L Ref Lab uncertainty pCi/L Resolution RBS/Ref Lab Ratio Pass/
Fail H-3 9060 419 9010 151 59.7 1.01 Pass Analytics E8138-125 Gamma Filter Range of 0.80 to 1.25 Nuclide RBS Mean pCi/filter RBS 1-s pCi/filter Ref Lab Value pCi/filter Ref Lab Uncertainty pCi/filter Resolution RBS/Ref Lab Ratio Pass/
Fail Ce-141 58.2 2.80 59.6 0.995 59.7 0.98 Pass Cr-51 188 11.9 202 3.38 59.8 0.93 Pass Cs-134 94.3 4.20 115 1.91 60.2 0.82 Pass Cs-137 101 4.20 102 1.70 60 0.99 Pass Co-58 83.9 3.90 87.1 1.45 60.1 0.96 Pass Mn-54 134 4.00 135 2.25 60 0.99 Pass Fe-59 52.1 2.60 49.0 0.818 59.9 1.06 Pass Zn-65 157 6.40 161 2.69 59.9 0.97 Pass Co-60 134 4.50 140 2.34 59.8 0.95 Pass Analytics E8139-125 Gamma Soil Range of 0.80 to 1.25 Nuclide RBS Mean pCi/g RBS 1-s pCi/g Ref Lab Value pCi/g Ref Lab Uncertainty pCi/g Resolution RBS/Ref Lab Ratio Pass/
Fail Ce-141 0.174
.0110 0.168
.00280 60 1.04 Pass Cr-51 0.556
.0450 0.569
.00950 59.9 0.98 Pass Cs-134 0.271
.0110 0.322
.00580 55.5 0.84 Pass Cs-137 0.347
.0170 0.375
.00625 60 0.93 Pass Co-58 0.221
.0110 0.245
.00409 59.9 0.90 Pass Mn-54 0.357
.0100 0.379
.00633 59.9 0.94 Pass Fe-59 0.142
.00100 0.138
.00230 60 1.03 Pass Zn-65 0.423
.0350 0.454
.00758 59.9 0.93 Pass Co-60 0.361
.0180 0.395
.00659 59.9 0.91 Pass
Annual Radiological 2011 Environmental Operating Report Waterford 3 Steam Electric Station 45 Table 8.1 Sample Type: Interlaboratory Comparison Analysis: Gross Beta, Iodine-131, Tritium and Gamma Isotopic Units: pCi/kg (wet) 4 th Quarter dated Dec. 8, 2011 Analytics E7480-125 Gamma in Water Range of 0.80 to 1.25 Nuclide RBS Mean pCi/L RBS 1-s pCi/L Ref Lab Value pCi/L Ref Lab Uncertainty pCi/L Resolution RBS/Ref Lab Ratio Pass/
Fail I-131 94.0 17.0 88.7 1.48 59.9 1.06 Pass Ce-141 n/a n/a n/a n/a n/a n/a n/a (1)
Cr-51 599 91.0 566 9.45 59.9 1.06 Pass Cs-134 164 11.0 171 2.86 59.8 0.96 Pass Cs-137 223 17.0 210 3.50 60 1.06 Pass Co-58 216 15.0 221 3.69 59.9 0.98 Pass Mn-54 255 13.0 241 4.02 60.0 1.06 Pass Fe-59 188 20.0 183 3.06 59.8 1.03 Pass Zn-65 309 29.0 291 4.87 59.8 1.06 Pass Co-60 284 16.0 270 4.51 59.9 1.05 Pass Analytics E7483-125 Gamma in Milk Range of 0.80 to 1.25 Nuclide RBS Mean pCi/L RBS 1-s pCi/L Ref Lab Value pCi/L Ref Lab uncertainty pCi/L Resolution RBS/Ref Lab Ratio Pass/
Fail I-131 91.0 16.0 90.2 1.51 59.7 1.01 Pass Ce-141 n/a n/a n/a n/a n/a n/a n/a (1)
Cr-51 532 76.0 566 9.45 59.9 0.94 Pass Cs-134 160 11.0 171 2.86 59.8 0.93 Pass Cs-137 216 10.0 210 3.50 60 1.03 Pass Co-58 206 13.0 221 3.69 59.9 0.93 Pass Mn-54 237 12.0 241 4.02 60.0 0.98 Pass Fe-59 192 18.0 183 3.06 59.8 1.05 Pass Zn-65 304 22.0 291 4.87 59.8 1.04 Pass Co-60 265 16.0 270 4.51 59.9 0.98 Pass Analytics E7482-125 I-131 cartridge Range of 0.80 to 1.25 Nuclide RBS Mean pCi/each RBS 1-s pCi/each Ref Lab Value pCi/each Ref Lab uncertainty pCi/each Resolution RBS/Ref Lab Ratio Pass/
Fail I-131 90.0 8.00 89.7 1.50 59.8 1.00 Pass
- 1)
Ce-141 was unavailable at the reference lab for the mixed gamma matrix for the 4th quarter milk and water.
RBS Environmental Laboratory analyzed interlaboratory comparison samples to fulfill the requirements of the ODCM.
Environmental samples are analyzed and reported with a 95% confidence level. The interlaboratory comparison results indicated that 100% of the sample results for accuracy and precision were within the acceptable control limits for 2011 following a recount of the gross beta in water (CR-RBS-2012-01845). A known gross beta in water standard is run with each group of samples and falls within 10% of the decay corrected activity.
Annual Radiological 2011 Environmental Operating Report Waterford 3 Steam Electric Station 46 ATTACHMENT 2 Statistical Comparisons
Annual Radiological 2011 Environmental Operating Report Waterford 3 Steam Electric Station 47 TABLE OF CONTENTS TABLE 2.1 STATISTICAL COMPARISON OF 2011 TLD MEASUREMENTS FROM STATIONS GROUPED BY DISTANCE 50 TABLE 2.2 STATISTICAL COMPARISON OF 2011 TLD RADIATION DOSE TO HISTORICAL DATA BY LOCATION 51 TABLE 2.3 STATISTICAL COMPARISON OF 2011 GROSS BETA ACTIVITY MEASUREMENTS ON AIR PARTICULATE FILTERS 52 TABLE 2.4 STATISTICAL COMPARISON OF 2011 GROSS BETA ACTIVITY MEASUREMENTS IN DRINKING/SURFACE WATER SAMPLES 53
Annual Radiological 2011 Environmental Operating Report Waterford 3 Steam Electric Station 48 Statistical Analyses Calculation of the Mean and Standard Deviation The mean and standard deviation for different groups of analyses are calculated using the following equations:
and where:
X = mean of sample population, S = standard deviation of sample population, n = number of samples in sample population, and Xi = value of the i'th sample.
n X
=
X i
n
=1 i
1 S =
( X - X )
(n -1) 0.5 i=1 n
i 2
2
Annual Radiological 2011 Environmental Operating Report Waterford 3 Steam Electric Station 49 Comparing Two Sample Population Means The means of two sample populations are compared for statistical difference using the standard "t" test. The use of the test requires the assumption that the data within the populations are normally distributed and that the true standard deviations of the mean are equal for both populations. The standard "t" test tests the hypothesis that the true means of both populations are equal. The "t" value can be calculated from the equation below (obtained from the CRC Standard Mathematical Tables, 26th Edition (1981)):
5.0 5.0 2
2 1
1 2
1 1
n n
n n
s n
s n
y x
y x
y y
x x
Y X
t where:
t = calculated "t" value, X = mean of first data set, Y = mean of second data set, x = number of variables in first data set, S x = standard deviation of first data set, y = number of variables in second data set, and S y = standard deviation of second data set.
The calculated "t" value is used to test the hypothesis that the true mean of the first population (m x) is equal to the true mean of the second population (m y) assuming that the true standard deviation of both populations are equal (m x = m y). The calculated "t" value is compared to a tabular "t" value such that:
a if t > t µ,n then reject the hypothesis when m x > m y,
- b.
if t < -t µ,n then reject the hypothesis when m x < m y,
- c.
if t > t µ/2,n then reject the hypothesis when m x = m y, where t µ/2,n and t µ,n are the tabular "t" values, with a preselected error (5%), confidence level (1 -
µ) or (1- µ/2), and degrees of freedom n = nx + ny - 2. Tabular values of the "t" were obtained from the CRC Standard Mathematical Tables, 26th Edition (1981).
Annual Radiological 2011 Environmental Operating Report Waterford 3 Steam Electric Station 50 TABLE 2.1 STATISTICAL COMPARISON OF 2011 TLD MEASUREMENTS FROM STATIONS GROUPED BY DISTANCE Stations Located 0-2 Miles from the Plant Stations Located 2-5 Miles from the Plant Stations Located more than 5 Miles from the Plant Mean (mRem/std.qtr.)
12 13 12 Standard Deviation (mRem/std. qtr.)
1.73 1.19 1.32 Number in Sample 60 23 25 Calculated t Value (comparison of stations 0-2 and 2-5 miles from the plant to stations >5 miles from the plant) 0.46 3.35 NA*
Tabular t Value at 95% Confidence(t0.025,n) 1.992(a) 2.015(b)
NA*
(a) Results indicate the mean for stations located 0-2 miles from the plant are statistically identical to the mean for stations located more than 5 miles from the plant.
(b) Although the TLD stations located 2-5 miles from the plant are statistically higher than those located more than 5 miles from the plant, the quarterly doses measured in 2011 are consistent with historical data at each location as shown in Table 2.2.
- Not Applicable
Annual Radiological 2011 Environmental Operating Report Waterford 3 Steam Electric Station 51 TABLE 2.2 STATISTICAL COMPARISON OF 2011 TLD RADIATION DOSE TO HISTORICAL DATA BY LOCATION Units: mrem/Std. Qtr.
Station 1990 - 2010 Avg**
1990 - 2010 Std Dev** 1990 - 2010 Range**
2011 Avg**
2011 Std Dev**
2011 Range**
A-2 13 1.4 10 18 14 1.2 13 16 A-5 13 1.4 10 17 13 1.4 12 15 B-1 13 1.4 10 19 13 0.5 13 14 B-4 13 1.2 11 17 14 0.9 13 15 C-1 9
1.3 7
13 10 0.5 9
10 D-2 12 2.0 8
19 10 0.0 10 10 D-5 12 1.5 9
18 13 0.5 12 13 E-1 11 1.2 9
16 12 0.8 11 13 E-5 12 1.7 9
17 13 0.0 13 13 E-15 11 1.7 8
16 11 0.4 10 11 E-30*
11 1.6 8
17 11 0.5 10 11 F-2 12 1.2 10 17 13 0.4 12 13 F-4 14 1.5 11 19 15 0.7 14 16 F-9 12 1.4 7
17 13 0.5 12 13 G-2 15 1.5 11 19 14 0.7 13 15 G-4 11 1.3 9
16 12 0.0 12 12 G-8 12 2.0 8
19 11 0.0 11 11 H-2 13 1.3 10 18 13 0.8 12 14 H-8 12 1.2 9
17 12 0.0 12 12 J-2 13 1.4 10 17 12 0.7 11 13 J-15 13 1.3 11 17 13 0.8 12 14 K-1 11 1.3 9
16 11 0.7 10 12 L-1 13 1.4 10 16 14 0.4 14 15 M-1 12 1.5 9
18 11 0.4 10 11 N-1 13 1.5 8
18 14 0.8 13 15 P-1 10 1.3 7
15 10 0.4 10 11 P-6 14 1.4 10 19 14 0.4 14 15 Q-1 12 1.2 10 16 14 0.5 13 14 Q-5 13 2.2 9
18 13 0.0 13 13 R-1 10 2.1 6
15 10 0.4 9
10 R-6 12 2.5 8
18 11 0.5 10 11
- Control Location
- Significant outliers were removed from data sets.
PERS data indicates an average of 20 mrem for all indicator locations with a range of 11 to 33 and an average control of 18 mrem.
Annual Radiological 2011 Environmental Operating Report Waterford 3 Steam Electric Station 52 TABLE 2.3 STATISTICAL COMPARISON OF 2011 GROSS BETA ACTIVITY MEASUREMENTS ON AIR PARTICULATE FILTERS SAMPLE STATION APF-1 APQ-1 APP-1 APC-1 APE-30 Mean (10-3pCi/m3) 26 26 26 25 27 Standard Deviation (10-3pCi/m3) 5.25 6.28 5.85 5.94 6.05 Number in Sample 26 26 26 26 26 Calculated t Value (comparison of the indicator stations to the control station) 0.90 0.43 0.56 0.97 NA*
Tabular t Value at 95% Confidence(t0.025,n) 2.011(a) 2.011(a) 2.011(a) 2.011(a)
NA*
(a) Results indicate the mean for the indicator stations is statistically identical to the mean for the control station.
- Not Applicable
Annual Radiological 2011 Environmental Operating Report Waterford 3 Steam Electric Station 53 TABLE 2.4 STATISTICAL COMPARISON OF 2011 GROSS BETA ACTIVITY MEASUREMENTS IN DRINKING/SURFACE WATER SAMPLES DWF/SWF-2 DWE/SWE-5 DWP/SWP-7 Mean (pCi/liter) 6.4 2.5 2.9 Standard Deviation (pCi/liter) 1.34 0.54 0.85 Number in Sample 4
3 3
Calculated t Value (comparison of the indicator stations to the control station) 4.26 0.65 NA*
Tabular t Value at 95% Confidence(t0.025,n) 2.571(b) 2.776(a)
NA*
(a) Results indicate the mean for the indicator station is statistically identical to the mean for the control station.
(b) Results indicate the mean for the indicator station is statistically higher than the mean for the control location. Results obtained in 2011 are consistent with historical data as stated in section 2.3.
- Not Applicable