ML19007A036
| ML19007A036 | |
| Person / Time | |
|---|---|
| Site: | La Crosse File:Dairyland Power Cooperative icon.png |
| Issue date: | 04/28/2017 |
| From: | Hollenbeck P Energy Solutions |
| To: | Office of Nuclear Material Safety and Safeguards |
| M VAALER DUWP | |
| Shared Package | |
| ML19007A031 | List: |
| References | |
| LC-FS-TSD-001, Rev 0 | |
| Download: ML19007A036 (46) | |
Text
EnergySolutions, Inc.
Technical Support Document LC-FS-TSD-001 Use of ISOCS for FSS of End State Sub Structures at LACBWR Revision 0 Originator: __________________________________ Date: 4/28/17 Pete Hollenbeck Reviewer: ______________________________ Date: 4/28/17 David Fauver Reviewer: ____________ __________________ Date: 5/1/2017 Joe Jacobsen Approval: ____________________________________ Date: 5/1/2017 Robert Yetter
Summary of Changes in this Revision:
- Rev. 0 -Initial issuance.
TSD No: LC-FS-TSD-001 Rev 0 Page 2 of 46
Table of Contents
- 1.
PURPOSE.................................................................................................................................4
- 2.
DISCUSSION...........................................................................................................................4 2.1.
Application of ISOCS in the Final Status Survey.........................................................4 2.2.
ISOCS Geometry Composer Software..........................................................................6
- 3.
ISOCS GEOMETRIES FOR FINAL STATUS SURVEYS....................................................8 3.1.
Reactor Building Basement...........................................................................................8 3.2.
Waste Gas Tank Vault...................................................................................................8 3.3.
Remaining Structures....................................................................................................8 3.4.
Conclusion.....................................................................................................................8
- 4.
SENSITIVITY TO NON-UNIFORM AREAL CONTAMINATION.....................................8
- 5.
MINIMUM DETECTABLE CS-137 CONCENTRATION OF THE CIRCULAR PLANE MODEL..................................................................................................................................10
- 6.
CONCLUSIONS....................................................................................................................10
- 7.
REFERENCES.......................................................................................................................10
- 8.
ATTACHMENTS...................................................................................................................11 List of Tables Table 1 - Non-uniform Contamination Efficiency Results............................................................ 9 Table 2 - Comparison of the Circular Plane Model Cs-137 MDC to Sub Structure DCGLs....... 10 List of Figures Figure 1 - 90 Degree Collimator Field of View (FOV).................................................................. 6 Figure 2 - ISOCS Geometry Composer Circular Plane Template.................................................. 7 TSD No: LC-FS-TSD-001 Rev 0 Page 3 of 46
- 1.
PURPOSE The primary purpose of this Technical Support Document (TSD) is to describe the efficiency calibration methods and use of in-situ gamma spectroscopy to perform the Final Status Surveys (FSS) of the LaCrosse Boiling Water Reactor (LACBWR) end state sub-structures. This TSD also provides a general description of the in-situ gamma spectroscopy system application during FSS including nominal minimum detectable concentration (MDC) values.
As described in the LACBWR License Termination Plan (LTP) [Reference 1], the objective of the FSS is to demonstrate that the residual radioactivity in each end state sub-structure at the time of license termination is below the Derived Concentration Guideline Levels (DCGL) for the Radionuclides of Concern (ROC) using a Sum of Fractions (SOF) approach. The FSS will be performed with the Canberra In-Situ Object Counting System (ISOCS) gamma spectroscopy system.
The efficiency calibrations presented in this TSD are based on the initial characterization data and are expected to be applicable to the conditions at the time of the FSS. However, further characterization will be performed to validate and adjust, if necessary, the geometries. Final Status Survey measurements with the ISOCS can proceed before continuing characterization is completed using efficiency curves based on the initial characterization data. The release record will include a discussion of the basis for the efficiency curve selected and a review of applicable continuing characterization data completed after the ISOCS FSS measurements were performed.
The efficiency curve used for the final analysis of the ISOCS FSS data will be based upon the analysis of all the characterization data.
The efficiency calibrations are intended to be conservative. The efficiency calibrations assume a uniform areal distribution of residual radioactivity. The effects of non-uniform areal contamination is also evaluated to ensure that a conservative estimate of the ROC concentration over the ISOCS Field of View (FOV) will be calculated.
- 2.
DISCUSSION 2.1.
Application of ISOCS in the Final Status Survey As described in LACBWR LTP Chapter 6, the DCGLs in Table 5-3 in Chapter 5 of the LTP in each sub-structure is the metric that will be used to demonstrate compliance with the 25 mrem/yr dose criterion in 10 CFR 20.1402.
For survey planning purposes and the assessments provided in this TSD, the assumed configuration of the ISOCS system during FSS is a three-meter distance from the surface to be measured with a 90 degree, 50 mm lead collimator. This results in a 28.3 m2 field of view. This configuration may be changed as necessary depending on actual conditions encountered during FSS.
Consistent with the graded approach recommended in the Multi Agency Radiation Survey and Site Investigation Manual (MARSSIM) [Reference 2], the number of ISOCS measurements in each sub-structure is a function of the potential for residual radioactivity to be present (see LTP Chapter 5). The remaining substructures are designated as Class 1 and will have ISOCS measurements performed over 100% of the surface.
TSD No: LC-FS-TSD-001 Rev 0 Page 4 of 46
The source term geometry, i.e., concentration depth profile and areal distribution of the residual radioactivity in structures, is required to generate efficiency curves (i.e., efficiency as a function of energy) for the ISOCS gamma spectroscopy measurements. The concrete cores obtained during characterization, as described in LTP Chapter 2, provide information regarding the distribution of activity with depth for each structure. The areal distribution is assumed to be uniform for the efficiency calibration. The effect of non-uniform areal contamination is evaluated separately in Section 4.
The sub-structures that will remain at license termination include:
x The basements of the Reactor Building (612 and 621 foot elevations),
x Waste Gas Tank Vault (618 and 621 foot elevations), and x The Remaining Structures (including the Reactor/Generator Plant, the one foot thick portion of the Chimney Foundation, the Turbine sump and the Turbine Pit).
The characterization data is documented in LTP Chapter 2 and analyzed in the following TSDs:
x Technical Support Document RS-TD-313196-002, La Crosse End State Basement Concrete Surface Areas, Volumes, and Void Spaces, x Technical Support Document RS-TD-313196-004, LACBWR Soil DCGL and Basement Concrete DCGLs.
Characterization of the structural surfaces of basements that will remain at the end-state consisted primarily of the acquisition and radiological analysis of concrete core samples from the concrete foundation walls and basement floors of the Reactor Building, Waste Treatment Building (WTB) floor and the Piping Tunnel floor. In June and July of 2015, a series of concrete core samples were taken from the 615 foot elevation concrete floor and the concrete floor and east wall on the 621 foot elevation in the Reactor Building, the 630 foot elevation concrete floor of the Waste Treatment Building (WTB) and the 633 foot elevation concrete floor of the Piping Tunnel. The locations where the core samples were taken are presented in LTP Chapter 2. A total of twelve (12) concrete core samples were collected, six (6) in the Reactor Building, three (3) in the WTB and three (3) in the Piping Tunnel.
The locations selected for the concrete core sampling were biased toward locations where physical or observed radiological measurements indicated the presence of fixed and/or volumetric contamination of the concrete media. When possible, locations were determined based upon elevated observed contact dose rates or count rates. In addition, visual observations of floor and wall surfaces were used to identify potential locations of surface contamination, such as discoloration or standing water. The goal was to identify, to the extent possible, the locations that exhibited the highest potential of representing the worst case bounding radiological condition for concrete in each survey unit. This judgmental sampling approach also ensured there was sufficient source term in the cores to achieve the sensitivities required to determine the radionuclide fractions of gamma emitters.
TSD No: LC-FS-TSD-001 Rev 0 Page 5 of 46
2.2.
ISOCS Geometry Composer Software The ISOCS Geometry Composer Software contains two relevant geometry templates for the FSS that allow the physical parameters of the measurement to be entered to determine the efficiency curves; the Exponential Circular Plane (ECP) and Circular Plane (CP) templates. Based upon the data presented in LTP Chapters 2 and 5, only the Circular Plane template should be needed to perform measurements in end state sub-structures.
The circular plane template allows the radioactivity to be distributed in any manner in up to ten layers of sources/ absorbers (i.e., Items 2 through 11 in Figure 2). Item 1.1, wall thickness, is set to zero for end state sub-structure floors and walls. Item 1.2 is the circular plane diameter which will typically be set to 6.0 meters when the source to detector distance is set to 3.0 meters (Item 14.1).
A generic circular plane geometry is shown in Figure 1.
Figure 1 - 90 Degree Collimator Field of View (FOV)
Figure 2 shows the circular plane template input parameters.
TSD No: LC-FS-TSD-001 Rev 0 Page 6 of 46
Figure 2 - ISOCS Geometr y Composer Cir cular P lane Template TSD No: LC-FS-TSD-001 Rev 0 Page 7 of 46
- 3.
ISOCS GEOMETRIES FOR FINAL STATUS SURVEYS 3.1.
Reactor Building Basement Concrete cores were taken at six locations at the 615 foot and 621 foot elevations. Analysis of the 1/2 inch pucks show that contamination is limited to the top 1 inch.
3.2.
Waste Gas Tank Vault No samples were taken in the vault. However, process knowledge indicates minimal source term in the concrete. This assumption will be confirmed by continuing characterization or at the time of the FSS.
3.3.
Remaining Structures Concrete core samples were taken at three locations in the Piping and Ventilation Tunnel floor.
Analysis of the 1/2 inch pucks show that contamination is limited to the top 1/2 inch.
3.4.
Conclusion Based upon information presented in LTP Chapters 4 and 5, a Contamination Verification Survey (CVS) will be performed on all remaining sub-structural surfaces to ensure levels meet the open-air demolition limits and the DCGL as measured by ISOCS.
The entire source term in the Reactor Building basement will be removed. All concrete will be removed to expose the steel liner. In addition, the steel liner will also be removed. The only residual radioactivity that should remain in the Reactor Building basement is contaminated concrete dust remaining from the demolition process. In addition, it is anticipated that a layer of concrete will be removed from the Waste Treatment Building floor to remove non-radiological contaminants.
Therefore, a simple circular plane geometry with a single 1/2 inch layer of contamination could be used for most end state sub-structure Final Status Surveys. Final characterization data will be needed to verify these assumptions. An example of the 1/2 inch geometry is presented in.
- 4.
SENSITIVITY TO NON-UNIFORM AREAL CONTAMINATION The development and use of the circular plane geometry discussed above assumes that the residual radioactivity is uniformly distributed over the ISOCS FOV. This section evaluates the effect of non-uniform areal contamination on the calculation of total activity using ISOCS. This section replicates the evaluations performed in the Zion ISOCS TSD [Reference 3].
To determine the effect of non-uniform contamination, two sets of three circular plane geometry templates (all with a contamination depth of 1.27cm) were developed. The first set assumed that the contaminated area was limited to a 1 m2 circular area as opposed to the full 28.3 m2 field of view. The location of the 1 m2 areas were defined by three offset distances from the detector centerline which were 0cm, 122cm, and 244cm. The 244cm offset places the 1m2 area at the edge of the 28.3 m2 field of view (i.e., the furthest distance from the detector). The second set of non-uniform distributions evaluated assumed that the contaminated area was a 0.5 m2 circular area with offset distances from the centerline of 0cm, 130cm and 260cm.
TSD No: LC-FS-TSD-001 Rev 0 Page 8 of 46
Efficiency files were generated for each configuration. The relevant excerpts from the geometry composer model report and results reports are provided in Attachment 2 and summarized in Table 1.
Inspection of Table 1 data shows that the Cs-137 efficiencies for single 1.0 m2 areas of contamination exceed the uniform circular plane efficiency by a factor of 2.43 and 1.59 at offset distances of 0 cm and 122cm, respectively. At a distance of 187cm, the efficiencies of the uniform and 1 m2 area are equal. At offset distances greater than 187cm, the 1 m2 area efficiencies are less than the uniform. In summary, a 1 m2 area with a center that is offset less than 187cm would result in overestimating the total activity when using the uniform circular plane efficiency and 1 m2 spots with offsets greater than 187cm would result in an underestimate.
The same general analysis applies to the 0.5 m2 area spots. The 0.5 m2 spot efficiency equals the uniform circular plane efficiency at the same offset distance of 187cm.
Table 1 - Non-uniform Contamination Efficiency Results Energy (KeV)
Uniform Efficiency 1 m2 0 cm Offset 1 m2 122 cm Offset 1 m2 244 cm Offset 0.5 m2 0 cm Offset 0.5 m2 130 cm Offset 0.5 m2 260 cm Offset 661.6 2.24E-06 5.43E-06 3.57E-06 1.39E-06 5.58E-06 3.42E-06 1.20E-06 Ratio to Uniform 1.00 2.43 1.59 0.62 2.49 1.53 0.54 Area-Weighted Average 1.2 1.1 The area weighting was performed by calculating the circular areas inside and outside of the offset distance where the uniform efficiencies and the spot efficiencies are equal, i.e., 187cm.
The ratios for offset distances less than the equal distance were averaged and applied to the inside circular area. The single ratio with an offset greater than the equal distance was applied to the circular area outside of the equal distance.
Calculating an area-weighted average 1 m2 spot efficiency from the ratio data in Table 1 shows that if several 1 m2 spots were randomly distributed in the ISOCS measurement FOV, the effective efficiency would be a factor of 1.2 times higher than the uniform circular plane efficiency. This would result in an overestimate of total activity if the ISOCS spectrums were analyzed with the uniform circular plane efficiency. The area-weighted average 0.5 m2 spot efficiency of randomly distributed 0.5 m2 spots is a factor of 1.1 times higher than the uniform circular plane efficiency and would also result in an overestimate of total activity if the ISOCS spectrums were analyzed with the uniform circular plane efficiency.
The analyses above assume that there is no contamination present in the FOV other than a single hot spot at the distances shown. Any increase in the number and areal extent of contamination beyond the single 1 m2 and 0.5 m2 areas assumed in Table 1, up to full uniform contamination over the entire 28 m2 FOV would result in a convergence between non-uniform and uniform efficiencies.
The distribution and location of non-uniform elevated areas are expected to be randomly located with equal probability of being at any distance from the detector centerline. In addition, the sub TSD No: LC-FS-TSD-001 Rev 0 Page 9 of 46
structures are expected to contain very low levels of residual radioactivity at license termination.
Therefore, based upon the evaluations presented in this section, no efficiency adjustment for potential non-uniform areal contamination is considered necessary.
- 5.
MINIMUM DETECTABLE CS-137 CONCENTRATION OF THE CIRCULAR PLANE MODEL A 600 second spectrum of clean concrete (G1 North Wall) was collected with the 90-degree collimator in place at a distance of 3 meters from the surface of the wall. The spectrum was analyzed using the uniform contamination geometry presented in Attachment 1. The ISOCS MDC report of the analyzed spectrum is provided in Attachment 3.
The calculated MDC was then compared to the sub structure DCGLs, presented in Table 5-3 of the LTP. Table 2 provides the results of the calculations which show that the MDC ranges from 0.03% to 0.08% of the limits.
Table 2 - Comparison of the Circular Plane Model Cs-137 MDC to Sub Structure DCGLs Structure Cs-137 DCGLB (pCi/m2)
% of DCGLB Reactor Building 1.05E+08 2.76E+04 0.03%
WGTV 3.29E+07 2.76E+04 0.08%
Remaining Basements 4.60E+07 2.76E+04 0.06%
- 6.
CONCLUSIONS
- 1.
The ISOCS gamma spectroscopy hardware and software can be used to perform the FSS of the LACBWR end state sub-structures.
- 2.
Evaluation of a 600 second spectrum of clean concrete, assuming uniform contamination at a depth of 1.27cm in the concrete, show that the MDC of the analysis is less than 1%
of the corresponding DCGL.
- 3.
No adjustment to the ISOCS efficiency calibrations are necessary to account for isolated spots of contamination.
- 4.
Additional concrete core samples should be collected after end state sub-structure remediation or in end state sub-structures that have not been previously evaluated, to provide validation to the final FSS ISOCS geometries.
- 7.
REFERENCES
- 1. LaCrosse Boiling Water Reactor License Termination Plan Revision 0.
- 2. NUREG-1575, Rev.1, Multi-Agency Radiation Survey and Site Investigation Manual (MARSSIM), August 2000.
- 3. Zion TSD 14-022, Use of In-Situ Gamma Spectroscopy for Source Term Survey of End State Structures, Revision 0.
TSD No: LC-FS-TSD-001 Rev 0 Page 10 of 46
- 8.
ATTACHMENTS - Example of the Circular Plane Geometry - Non-uniform Hot Spot Efficiencies - Minimum Detectable Concentrations TSD No: LC-FS-TSD-001 Rev 0 Page 11 of 46
Atta chment 1 Ex ample of the Circular P lane Geometry TSD No: LC-FS-TSD-001 Rev 0 Page 12 of 46
Geometry Composer Report Page 1 of 2 Date:
Thursday, December 08, 2016 - 15:40:26
==
Description:==
LaCrosse STS concrete example.
Comment:
Detector at 3 meters from surface with 90 degree collimator.
File Name:
C:\\GENIE2K\\isocs\\data\\GEOMETRY\\In-Situ\\CIRCULAR_PLANE\\LaCrosse STS of concrete example.geo Software:
ISOCS Template:
CIRCULAR_PLANE, Version: (default)
Detector:
3844f Collimator:
50mm-90d new (newISOCS 50mm side 90deg collimation [large hole collimator])
Environment:
Temperature = 22 °C, Pressure = 760 mm Hg, Relative Humidity = 30%
Integration:
Convergence = 1.00%, MDRPN = 24 (16), CRPN = 24 (16)
Dimensions (cm)
No.
Description d.1 d.2 d.3 d.4 d.5 d.6 Material Density Rel. Conc.
1 Side Walls 0
600 none 2
Layer 1 1.27 concrete 2.3 1.00 3
Layer 2 0
none 4
Layer 3 0
<none>
5 Layer 4 0
<none>
6 Layer 5 0
<none>
7 Layer 6 0
<none>
8 Layer 7 0
<none>
9 Layer 8 0
<none>
10 Layer 9 0
<none>
11 Layer 10 0
<none>
12 Absorber1 0.3 hpolyeth 0.95 13 Absorber2 14 Source-Detector 300 0
0 0
0 List of energies for efficiency curve generation 59.5 88.0 122.1 200.0 400.0 661.7 900.0 1000.0 1173.2 1332.5 1836.0 TSD No: LC-FS-TSD-001 Rev 0 Page 13 of 46
Geometry Composer Report Page 2 of 2 Date:
Thursday, December 08, 2016 - 15:40:26
==
Description:==
LaCrosse STS concrete example.
Comment:
Detector at 3 meters from surface with 90 degree collimator.
File Name:
C:\\GENIE2K\\isocs\\data\\GEOMETRY\\In-Situ\\CIRCULAR_PLANE\\LaCrosse STS of concrete example.geo Software:
ISOCS Template:
CIRCULAR_PLANE, Version: (default)
TSD No: LC-FS-TSD-001 Rev 0 Page 14 of 46
Non-uniform Hot Spot Efficiencies TSD No: LC-FS-TSD-001 Rev 0 Page 15 of 46
Geometry Composer Report Page 1 of 2 Date:
Friday, December 09, 2016 - 16:17:46
==
Description:==
1 square meter hot spot at 0cm offset Comment:
for testing non-uniform contamination File Name:
C:\\GENIE2K\\isocs\\data\\GEOMETRY\\In-Situ\\CIRCULAR_PLANE\\1 sq meter - 0 offset.geo Software:
ISOCS Template:
CIRCULAR_PLANE, Version: (default)
Detector:
3844f Collimator:
50mm-90d new (newISOCS 50mm side 90deg collimation [large hole collimator])
Environment:
Temperature = 22 °C, Pressure = 760 mm Hg, Relative Humidity = 30%
Integration:
Convergence = 1.00%, MDRPN = 24 (16), CRPN = 24 (16)
Dimensions (cm)
No.
Description d.1 d.2 d.3 d.4 d.5 d.6 Material Density Rel. Conc.
1 Side Walls 0
113 none 2
Layer 1 1.27 concrete 2.3 1.00 3
Layer 2 0
<none>
4 Layer 3 0
<none>
5 Layer 4 0
<none>
6 Layer 5 0
<none>
7 Layer 6 0
<none>
8 Layer 7 0
<none>
9 Layer 8 0
<none>
10 Layer 9 0
<none>
11 Layer 10 0
<none>
12 Absorber1 0.3 hpolyeth 0.95 13 Absorber2 14 Source-Detector 300 0
0 0
0 List of energies for efficiency curve generation 59.5 88.0 122.1 165.9 391.7 661.7 898.0 1173.2 1332.5 1836.0 TSD No: LC-FS-TSD-001 Rev 0 Page 16 of 46
Geometry Composer Report Page 2 of 2 Date:
Friday, December 09, 2016 - 16:17:46
==
Description:==
1 square meter hot spot at 0cm offset Comment:
for testing non-uniform contamination File Name:
C:\\GENIE2K\\isocs\\data\\GEOMETRY\\In-Situ\\CIRCULAR_PLANE\\1 sq meter - 0 offset.geo Software:
ISOCS Template:
CIRCULAR_PLANE, Version: (default)
TSD No: LC-FS-TSD-001 Rev 0 Page 17 of 46
Geometry Composer Report Page 1 of 2 Date:
Friday, December 09, 2016 - 16:19:06
==
Description:==
1 square meter hot spot at 122cm offset Comment:
for testing non-uniform contamination File Name:
C:\\GENIE2K\\isocs\\data\\GEOMETRY\\In-Situ\\CIRCULAR_PLANE\\1 sq meter - 122cm offset.geo Software:
ISOCS Template:
CIRCULAR_PLANE, Version: (default)
Detector:
3844f Collimator:
50mm-90d new (newISOCS 50mm side 90deg collimation [large hole collimator])
Environment:
Temperature = 22 °C, Pressure = 760 mm Hg, Relative Humidity = 30%
Integration:
Convergence = 1.00%, MDRPN = 24 (16), CRPN = 24 (16)
Dimensions (cm)
No.
Description d.1 d.2 d.3 d.4 d.5 d.6 Material Density Rel. Conc.
1 Side Walls 0
113 none 2
Layer 1 1.27 concrete 2.3 1.00 3
Layer 2 0
<none>
4 Layer 3 0
<none>
5 Layer 4 0
<none>
6 Layer 5 0
<none>
7 Layer 6 0
<none>
8 Layer 7 0
<none>
9 Layer 8 0
<none>
10 Layer 9 0
<none>
11 Layer 10 0
<none>
12 Absorber1 0.3 hpolyeth 0.95 13 Absorber2 14 Source-Detector 300 122 0
122 0
List of energies for efficiency curve generation 59.5 88.0 122.1 165.9 391.7 661.7 898.0 1173.2 1332.5 1836.0 TSD No: LC-FS-TSD-001 Rev 0 Page 18 of 46
Geometry Composer Report Page 2 of 2 Date:
Friday, December 09, 2016 - 16:19:06
==
Description:==
1 square meter hot spot at 122cm offset Comment:
for testing non-uniform contamination File Name:
C:\\GENIE2K\\isocs\\data\\GEOMETRY\\In-Situ\\CIRCULAR_PLANE\\1 sq meter - 122cm offset.geo Software:
ISOCS Template:
CIRCULAR_PLANE, Version: (default)
TSD No: LC-FS-TSD-001 Rev 0 Page 19 of 46
Geometry Composer Report Page 1 of 2 Date:
Saturday, December 10, 2016 - 08:02:11
==
Description:==
1 square meter hot spot at 187cm offset Comment:
for testing non-uniform contamination File Name:
C:\\GENIE2K\\isocs\\data\\GEOMETRY\\In-Situ\\CIRCULAR_PLANE\\1 sq meter - 187cm offset.geo Software:
ISOCS Template:
CIRCULAR_PLANE, Version: (default)
Detector:
3844f Collimator:
50mm-90d new (newISOCS 50mm side 90deg collimation [large hole collimator])
Environment:
Temperature = 22 °C, Pressure = 760 mm Hg, Relative Humidity = 30%
Integration:
Convergence = 1.00%, MDRPN = 24 (16), CRPN = 24 (16)
Dimensions (cm)
No.
Description d.1 d.2 d.3 d.4 d.5 d.6 Material Density Rel. Conc.
1 Side Walls 0
113 none 2
Layer 1 1.27 concrete 2.3 1.00 3
Layer 2 0
<none>
4 Layer 3 0
<none>
5 Layer 4 0
<none>
6 Layer 5 0
<none>
7 Layer 6 0
<none>
8 Layer 7 0
<none>
9 Layer 8 0
<none>
10 Layer 9 0
<none>
11 Layer 10 0
<none>
12 Absorber1 0.3 hpolyeth 0.95 13 Absorber2 14 Source-Detector 300 187 0
187 0
List of energies for efficiency curve generation 59.5 88.0 122.1 165.9 391.7 661.7 898.0 1173.2 1332.5 1836.0 TSD No: LC-FS-TSD-001 Rev 0 Page 20 of 46
Geometry Composer Report Page 2 of 2 Date:
Saturday, December 10, 2016 - 08:02:11
==
Description:==
1 square meter hot spot at 187cm offset Comment:
for testing non-uniform contamination File Name:
C:\\GENIE2K\\isocs\\data\\GEOMETRY\\In-Situ\\CIRCULAR_PLANE\\1 sq meter - 187cm offset.geo Software:
ISOCS Template:
CIRCULAR_PLANE, Version: (default)
TSD No: LC-FS-TSD-001 Rev 0 Page 21 of 46
Geometry Composer Report Page 1 of 2 Date:
Friday, December 09, 2016 - 16:20:18
==
Description:==
1 square meter hot spot at 244cm offset Comment:
for testing non-uniform contamination File Name:
C:\\GENIE2K\\isocs\\data\\GEOMETRY\\In-Situ\\CIRCULAR_PLANE\\1 sq meter - 244cm offset.geo Software:
ISOCS Template:
CIRCULAR_PLANE, Version: (default)
Detector:
3844f Collimator:
50mm-90d new (newISOCS 50mm side 90deg collimation [large hole collimator])
Environment:
Temperature = 22 °C, Pressure = 760 mm Hg, Relative Humidity = 30%
Integration:
Convergence = 1.00%, MDRPN = 24 (16), CRPN = 24 (16)
Dimensions (cm)
No.
Description d.1 d.2 d.3 d.4 d.5 d.6 Material Density Rel. Conc.
1 Side Walls 0
113 none 2
Layer 1 1.27 concrete 2.3 1.00 3
Layer 2 0
<none>
4 Layer 3 0
<none>
5 Layer 4 0
<none>
6 Layer 5 0
<none>
7 Layer 6 0
<none>
8 Layer 7 0
<none>
9 Layer 8 0
<none>
10 Layer 9 0
<none>
11 Layer 10 0
<none>
12 Absorber1 0.3 hpolyeth 0.95 13 Absorber2 14 Source-Detector 300 244 0
244 0
List of energies for efficiency curve generation 59.5 88.0 122.1 165.9 391.7 661.7 898.0 1173.2 1332.5 1836.0 TSD No: LC-FS-TSD-001 Rev 0 Page 22 of 46
Geometry Composer Report Page 2 of 2 Date:
Friday, December 09, 2016 - 16:20:18
==
Description:==
1 square meter hot spot at 244cm offset Comment:
for testing non-uniform contamination File Name:
C:\\GENIE2K\\isocs\\data\\GEOMETRY\\In-Situ\\CIRCULAR_PLANE\\1 sq meter - 244cm offset.geo Software:
ISOCS Template:
CIRCULAR_PLANE, Version: (default)
TSD No: LC-FS-TSD-001 Rev 0 Page 23 of 46
Geometry Composer Report Page 1 of 2 Date:
Saturday, December 10, 2016 - 08:30:46
==
Description:==
0.5 square meter hot spot at 0cm offset Comment:
for testing non-uniform contamination File Name:
C:\\GENIE2K\\isocs\\data\\GEOMETRY\\In-Situ\\CIRCULAR_PLANE\\0.5 sq meter - 0cm offset.geo Software:
ISOCS Template:
CIRCULAR_PLANE, Version: (default)
Detector:
3844f Collimator:
50mm-90d new (newISOCS 50mm side 90deg collimation [large hole collimator])
Environment:
Temperature = 22 °C, Pressure = 760 mm Hg, Relative Humidity = 30%
Integration:
Convergence = 1.00%, MDRPN = 24 (16), CRPN = 24 (16)
Dimensions (cm)
No.
Description d.1 d.2 d.3 d.4 d.5 d.6 Material Density Rel. Conc.
1 Side Walls 0
80 none 2
Layer 1 1.27 concrete 2.3 1.00 3
Layer 2 0
<none>
4 Layer 3 0
<none>
5 Layer 4 0
<none>
6 Layer 5 0
<none>
7 Layer 6 0
<none>
8 Layer 7 0
<none>
9 Layer 8 0
<none>
10 Layer 9 0
<none>
11 Layer 10 0
<none>
12 Absorber1 0.3 hpolyeth 0.95 13 Absorber2 14 Source-Detector 300 0
0 0
0 List of energies for efficiency curve generation 59.5 88.0 122.1 165.9 391.7 661.7 898.0 1173.2 1332.5 1836.0 TSD No: LC-FS-TSD-001 Rev 0 Page 24 of 46
Geometry Composer Report Page 2 of 2 Date:
Saturday, December 10, 2016 - 08:30:46
==
Description:==
0.5 square meter hot spot at 0cm offset Comment:
for testing non-uniform contamination File Name:
C:\\GENIE2K\\isocs\\data\\GEOMETRY\\In-Situ\\CIRCULAR_PLANE\\0.5 sq meter - 0cm offset.geo Software:
ISOCS Template:
CIRCULAR_PLANE, Version: (default)
TSD No: LC-FS-TSD-001 Rev 0 Page 25 of 46
Geometry Composer Report Page 1 of 2 Date:
Saturday, December 10, 2016 - 08:29:37
==
Description:==
0.5 square meter hot spot at 130cm offset Comment:
for testing non-uniform contamination File Name:
C:\\GENIE2K\\isocs\\data\\GEOMETRY\\In-Situ\\CIRCULAR_PLANE\\0.5 sq meter - 130cm offset.geo Software:
ISOCS Template:
CIRCULAR_PLANE, Version: (default)
Detector:
3844f Collimator:
50mm-90d new (newISOCS 50mm side 90deg collimation [large hole collimator])
Environment:
Temperature = 22 °C, Pressure = 760 mm Hg, Relative Humidity = 30%
Integration:
Convergence = 1.00%, MDRPN = 24 (16), CRPN = 24 (16)
Dimensions (cm)
No.
Description d.1 d.2 d.3 d.4 d.5 d.6 Material Density Rel. Conc.
1 Side Walls 0
80 none 2
Layer 1 1.27 concrete 2.3 1.00 3
Layer 2 0
<none>
4 Layer 3 0
<none>
5 Layer 4 0
<none>
6 Layer 5 0
<none>
7 Layer 6 0
<none>
8 Layer 7 0
<none>
9 Layer 8 0
<none>
10 Layer 9 0
<none>
11 Layer 10 0
<none>
12 Absorber1 0.3 hpolyeth 0.95 13 Absorber2 14 Source-Detector 300 130 0
130 0
List of energies for efficiency curve generation 59.5 88.0 122.1 165.9 391.7 661.7 898.0 1173.2 1332.5 1836.0 TSD No: LC-FS-TSD-001 Rev 0 Page 26 of 46
Geometry Composer Report Page 2 of 2 Date:
Saturday, December 10, 2016 - 08:29:37
==
Description:==
0.5 square meter hot spot at 130cm offset Comment:
for testing non-uniform contamination File Name:
C:\\GENIE2K\\isocs\\data\\GEOMETRY\\In-Situ\\CIRCULAR_PLANE\\0.5 sq meter - 130cm offset.geo Software:
ISOCS Template:
CIRCULAR_PLANE, Version: (default)
TSD No: LC-FS-TSD-001 Rev 0 Page 27 of 46
Geometry Composer Report Page 1 of 2 Date:
Monday, December 12, 2016 - 16:30:46
==
Description:==
0.5 square meter hot spot at 187cm offset Comment:
for testing non-uniform contamination File Name:
C:\\GENIE2K\\isocs\\data\\GEOMETRY\\In-Situ\\CIRCULAR_PLANE\\0.5 sq meter - 187cm offset.geo Software:
ISOCS Template:
CIRCULAR_PLANE, Version: (default)
Detector:
3844f Collimator:
50mm-90d new (newISOCS 50mm side 90deg collimation [large hole collimator])
Environment:
Temperature = 22 °C, Pressure = 760 mm Hg, Relative Humidity = 30%
Integration:
Convergence = 1.00%, MDRPN = 24 (16), CRPN = 24 (16)
Dimensions (cm)
No.
Description d.1 d.2 d.3 d.4 d.5 d.6 Material Density Rel. Conc.
1 Side Walls 0
80 none 2
Layer 1 1.27 concrete 2.3 1.00 3
Layer 2 0
<none>
4 Layer 3 0
<none>
5 Layer 4 0
<none>
6 Layer 5 0
<none>
7 Layer 6 0
<none>
8 Layer 7 0
<none>
9 Layer 8 0
<none>
10 Layer 9 0
<none>
11 Layer 10 0
<none>
12 Absorber1 0.3 hpolyeth 0.95 13 Absorber2 14 Source-Detector 300 187 0
187 0
List of energies for efficiency curve generation 59.5 88.0 122.1 165.9 391.7 661.7 898.0 1173.2 1332.5 1836.0 TSD No: LC-FS-TSD-001 Rev 0 Page 28 of 46
Geometry Composer Report Page 2 of 2 Date:
Monday, December 12, 2016 - 16:30:46
==
Description:==
0.5 square meter hot spot at 187cm offset Comment:
for testing non-uniform contamination File Name:
C:\\GENIE2K\\isocs\\data\\GEOMETRY\\In-Situ\\CIRCULAR_PLANE\\0.5 sq meter - 187cm offset.geo Software:
ISOCS Template:
CIRCULAR_PLANE, Version: (default)
TSD No: LC-FS-TSD-001 Rev 0 Page 29 of 46
Geometry Composer Report Page 1 of 2 Date:
Saturday, December 10, 2016 - 08:28:06
==
Description:==
0.5 square meter hot spot at 260cm offset Comment:
for testing non-uniform contamination File Name:
C:\\GENIE2K\\isocs\\data\\GEOMETRY\\In-Situ\\CIRCULAR_PLANE\\0.5 sq meter - 260cm offset.geo Software:
ISOCS Template:
CIRCULAR_PLANE, Version: (default)
Detector:
3844f Collimator:
50mm-90d new (newISOCS 50mm side 90deg collimation [large hole collimator])
Environment:
Temperature = 22 °C, Pressure = 760 mm Hg, Relative Humidity = 30%
Integration:
Convergence = 1.00%, MDRPN = 24 (16), CRPN = 24 (16)
Dimensions (cm)
No.
Description d.1 d.2 d.3 d.4 d.5 d.6 Material Density Rel. Conc.
1 Side Walls 0
80 none 2
Layer 1 1.27 concrete 2.3 1.00 3
Layer 2 0
<none>
4 Layer 3 0
<none>
5 Layer 4 0
<none>
6 Layer 5 0
<none>
7 Layer 6 0
<none>
8 Layer 7 0
<none>
9 Layer 8 0
<none>
10 Layer 9 0
<none>
11 Layer 10 0
<none>
12 Absorber1 0.3 hpolyeth 0.95 13 Absorber2 14 Source-Detector 300 260 0
260 0
List of energies for efficiency curve generation 59.5 88.0 122.1 165.9 391.7 661.7 898.0 1173.2 1332.5 1836.0 TSD No: LC-FS-TSD-001 Rev 0 Page 30 of 46
Geometry Composer Report Page 2 of 2 Date:
Saturday, December 10, 2016 - 08:28:06
==
Description:==
0.5 square meter hot spot at 260cm offset Comment:
for testing non-uniform contamination File Name:
C:\\GENIE2K\\isocs\\data\\GEOMETRY\\In-Situ\\CIRCULAR_PLANE\\0.5 sq meter - 260cm offset.geo Software:
ISOCS Template:
CIRCULAR_PLANE, Version: (default)
TSD No: LC-FS-TSD-001 Rev 0 Page 31 of 46
TSD No: LC-FS-TSD-001 Rev 0 Page 32 of 46
TSD No: LC-FS-TSD-001 Rev 0 Page 33 of 46
TSD No: LC-FS-TSD-001 Rev 0 Page 34 of 46
TSD No: LC-FS-TSD-001 Rev 0 Page 35 of 46
TSD No: LC-FS-TSD-001 Rev 0 Page 36 of 46
TSD No: LC-FS-TSD-001 Rev 0 Page 37 of 46
TSD No: LC-FS-TSD-001 Rev 0 Page 38 of 46
TSD No: LC-FS-TSD-001 Rev 0 Page 39 of 46
TSD No: LC-FS-TSD-001 Rev 0 Page 40 of 46
Attachm ent 3 Min imum Detectab le Concentr ation s TSD No: LC-FS-TSD-001 Rev 0 Page 41 of 46
- G A M M A S P E C T R U M A N A L Y S I S *****
Filename: C:\\Pete's Current Stuff\\LaCrosse\\ISOCS stuff\\G1 North Wall 90 Report Generated On : 12/8/2016 4:08:36 PM Sample Title : G1 North wall 12/07/16 Sample Description : 3 meter 90 degree collimation Sample Identification :
Sample Type : Clean concrete Sample Geometry :
Peak Locate Threshold : 3.00 Peak Locate Range (in channels) : 1 - 65535 Peak Area Range (in channels) : 1 - 8192 Identification Energy Tolerance : 1.500 keV Sample Size : 1.000E+000 sq meter Sample Taken On : 11/3/2016 3:49:00 PM Acquisition Started : 12/7/2016 1:11:01 PM Live Time : 600.0 seconds Real Time : 600.2 seconds Dead Time : 0.03 %
Energy Calibration Used Done On : 10/12/2016 Efficiency Calibration Used Done On : 12/8/2016 Efficiency ID : LACBWR STS TSD No: LC-FS-TSD-001 Rev 0 Page 42 of 46
Peak Analysis Report 12/8/2016 4:08:36 PM Page 2
- P E A K A N A L Y S I S R E P O R T *****
Detector Name: 3844 Sample
Title:
G1 North wall 12/07/16 Peak Analysis Performed on: 12/8/2016 4:08:36 PM Peak Analysis From Channel: 1 Peak Analysis To Channel: 8192 Peak ROI ROI Peak Energy FWHM Net Peak Net Area Continuum No. start end centroid (keV) (keV) Area Uncert. Counts 1 1618-1627 1622.50 405.73 0.74 1.09E+001 5.32 7.06E+000 2 5830- 5859 5844.49 1460.85 1.80 1.78E+002 14.04 3.88E+000 M = First peak in a multiplet region m = Other peak in a multiplet region F = Fitted singlet Errors quoted at 1.000 sigma TSD No: LC-FS-TSD-001 Rev 0 Page 43 of 46
Interference Corrected Activity Report 12/8/2016 4:08:37 PM Page 3
- N U C L I D E I D E N T I F I C A T I O N R E P O R T *****
Sample
Title:
G1 North wall 12/07/16 Nuclide Library Used: C:\\GENIE2K\\CAMFILES\\ESClearance-refined.
.................... IDENTIFIED NUCLIDES....................
Nuclide Id Energy Yield Activity Activity Name Confidence (keV) (%) (pCi/sq m) Uncertainty K-40 1.000 1460.81* 10.67 1.84876E+006 1.64540E+005
- = Energy line found in the spectrum.
@ = Energy line not used for Weighted Mean Activity Energy Tolerance : 1.500 keV Nuclide confidence index threshold = 0.30 Errors quoted at 1.000 sigma TSD No: LC-FS-TSD-001 Rev 0 Page 44 of 46
Interference Corrected Activity Report 12/8/2016 4:08:37 PM Page 4
- I N T E R F E R E N C E C O R R E C T E D R E P O R T *****
Nuclide Wt mean Wt mean Nuclide Id Activity Activity Name Confidence (pCi/sq m) Uncertainty K-40 1.000 1.848757E+006 1.645401E+005
? = nuclide is part of an undetermined solution X = nuclide rejected by the interference analysis
@ = nuclide contains energy lines not used in Weighted Mean Activity Errors quoted at 1.000 sigma
- U N I D E N T I F I E D P E A K S **********
Peak Locate Performed on: 12/8/2016 4:08:36 PM Peak Locate From Channel: 1 Peak Locate To Channel: 8192 Peak Energy Peak Size in Peak CPS Peak Tol.
No. (keV) Counts per Second % Uncertainty Type Nuclide 1 405.73 1.8241E-002 48.60 M = First peak in a multiplet region m = Other peak in a multiplet region F = Fitted singlet Errors quoted at 1.000 sigma TSD No: LC-FS-TSD-001 Rev 0 Page 45 of 46
Nuclide MDA Report 12/8/2016 4:08:37 PM Page 5
- N U C L I D E M D A R E P O R T *****
Detector Name: 3844 Sample Geometry:
Sample
Title:
G1 North wall 12/07/16 Nuclide Library Used: C:\\GENIE2K\\CAMFILES\\ESClearance-refined.
Nuclide Energy Yield Line MDA Nuclide MDA Activity Name (keV) (%) (pCi/sq m) (pCi/sq m) (pCi/sq m)
Th+dau 77.11 16.80 3.2335E+005 7.15E+004 -1.2918E+003 87.30 6.05 6.6071E+005 -3.4324E+005 238.63 41.40 7.1466E+004 1.3404E+005 338.32 11.70 2.0806E+005 3.6803E+004 583.19 29.70 9.9025E+004 1.4529E+004 727.18 11.30 2.4931E+005 -2.0169E+003 911.07 28.20 1.0549E+005 6.7926E+004 966.60 27.10 1.1112E+005 6.6413E+004
> 2614.50 34.51 0.0000E+000 0.0000E+000 CO-60 1173.22 100.00 2.5101E+004 2.36E+004 3.2710E+003 1332.49 100.00 2.3581E+004 1.8911E+004 CS-134 604.70 97.60 3.1911E+004 2.92E+004 3.1349E+003 795.84 85.40 2.9210E+004 2.8080E+004 CS-137 661.65 85.12 2.7551E+004 2.76E+004 -1.2662E+004 EU-154 123.07 40.40 7.0693E+004 7.07E+004 -3.1907E+004 1274.51 34.40 7.5767E+004 8.0472E+003 AM-241 59.54 36.30 2.2485E+005 2.25E+005 2.4760E+004
+ = Nuclide identified during the nuclide identification
- = Energy line found in the spectrum
> = Calculated MDA is zero due to zero counts in the region, or the region is outside the spectrum, or has not been calculated
@ = Half-life too short to be able to perform the decay correction TSD No: LC-FS-TSD-001 Rev 0 Page 46 of 46 2.76E+004 CS-137