ML18052A568
| ML18052A568 | |
| Person / Time | |
|---|---|
| Site: | 07000036 (SNM-0033) |
| Issue date: | 05/29/2015 |
| From: | Evers W Westinghouse |
| To: | Jakub E, Barry Miller Westinghouse |
| References | |
| HEM-15-MEMO-044, HEM-18-7 | |
| Download: ML18052A568 (3) | |
Text
Westinghouse Non-Proprietary Class 3
© 2015 Westinghouse Electric Company LLC, All Rights Reserved INTER-OFFICE MEMORANDUM Date:
May 29, 2015 HEM-15-MEMO-044 To:
Brian Miller, FSS Manager Ellen Jakub, FSS Data Manager From:
W. Clark Evers, Radiation Safety Officer Cc:
Steven A. Grice
Subject:
WRS Test Background Data Set An evaluation of the appropriate data set for background reference areas was performed to assess the values utilized in various portions of the FSS program.
There are two different sets of background data. The first set was obtained for DO-08-003, the Hematite Radiological Characterization Report (HRCR). The samples were taken and analyzed in 2005; Paragon Analytics performed the analyses. The second set was obtained for HDP-RPT-FSS-301, Off-Site Borrow Soil Analysis 2112 Horine Road, Festus, Missouri. These samples were taken and analyzed in 2014; Test America St. Louis performed the analyses.
The Westinghouse HDP collected and analyzed soil samples from sites used to establish background soil concentrations for the HRCR. HDP collected new soil samples at 8 sample points at each of the two locations previously specified in the HRCR when HDP-RPT-FSS-301 was under development. Each sample location was sampled in 3 foot intervals to a depth of at least 6 feet, or until refusal was met. A total of 32 samples were taken from the two reference areas. This resulted in the second data set for the background reference areas.
The unknown ingrowth value of 0.9 pCi/g for Ra-226 will be retained from the HRCR data set, as this value is conservative compared to HDP-RPT-FSS-301 data set (0.99 pCi/g). The value for subtracting background for Th-232 (1.0 pCi/g) has also been retained from the HRCR, since the HDP-RPT-FSS-301 data set is very close to this value (1.02 pCi/g) and is also conservative.
HEM-15.MEMO-044 May 29,2015 Page 2 of3 For retrospective analysis and for utilization in the Wilcoxon Rank Sum (WRS) test, individual samples from HDP-RPT-FSS-301 have a lower sum of fraction (SOF) values than for samples analyzed in the HRCR. Performing the WRS statistical test is not necessaty when the difference between the maximum survey unit data set measurement SOF and the minimum background area measruement SOF was less than one. The HDP-RPT-FSS-301 data set was also created with the analyses performed at the same laboratory for FSS sample analysis. For these reasons, the data set from HDP-RPT-FSS-301 will be utilized for the performance of the WRS test as a conservative measure.
Attachments:
Table l - 2014 Reference Area Results Owner/Author:
W. Clark Evers RSO Reviewed & Approved By:
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Date Date n A. Grice FSS Task Manager
HEM-15-MEMO-044 May 29, 2015 Page 3 of 3 Table 1 - 2014 Reference Area Results Sample ID Sample Date Result Error MDC Result Error MDC Result Error MDC Result Error MDC Result Error MDC Result Error MDC Result Error MDC Result Error MDC 9574-SS-140910-01-01 9/10/2014 0.06 0.0254 0.228 0.92 0.135 0.0648 1.15 0.164 0.0678 1.04 0.181 0.113 1.15 0.178 0.133 0.671 0.181 0.0502 0.0223 0.0395 0.0713 0.724 0.189 0.0501 9574-SS-140910-01-02 9/10/2014 0.0451 0.143 0.212 0.727 0.123 0.0676 0.719 0.103 0.0447 0.688 0.127 0.0802 0.749 0.12 0.0896 0.353 0.129 0.0505 0.0112 0.0281 0.0629 0.379 0.135 0.0676 9574-SS-140910-01-03 9/10/2014 0.0272 0.116 0.214 0.871 0.134 0.0656 1.04 0.166 0.0772 0.893 0.162 0.0986 0.936 0.183 0.145 0.518 0.164 0.0617 0.0148 0.0296 0.0444 0.723 0.195 0.0356 9574-SS-140910-01-04 9/10/2014 0.00489 0.161 0.222 0.863 0.123 0.0529 1.01 0.138 0.0513 0.853 0.134 0.0854 0.962 0.171 0.0901 0.39 0.138 0.0344 0.0143 0.0286 0.0428 0.591 0.172 0.0595 9574-SS-140910-01-05 9/10/2014 0.000801 0.00339 0.2 0.867 0.149 0.0853 0.995 0.16 0.0848 0.847 0.152 0.109 0.948 0.178 0.0908 0.345 0.163 0.0834 0
0.00855 0.0684 0.421 0.179 0.0549 9574-SS-140910-01-07 9/10/2014 0.0923 0.17 0.209 0.761 0.13 0.0682 0.858 0.133 0.0642 0.802 0.165 0.149 0.831 0.15 0.11 0.512 0.16 0.0349 0.038 0.0508 0.0752 0.453 0.15 0.0348 9574-SS-140910-01-08 9/10/2014 0.205 0.439 0.213 0.893 0.124 0.046 1.03 0.143 0.064 0.84 0.148 0.0802 0.979 0.139 0.0868 0.832 0.21 0.0748 0
0.00539 0.0431 0.632 0.179 0.0525 9574-SS-140910-01-09 9/10/2014 0.186 0.235 0.226 0.868 0.142 0.0713 1.08 0.169 0.0702 0.683 0.164 0.148 0.768 0.188 0.184 0.484 0.159 0.0554 0.0426 0.0529 0.0689 0.493 0.161 0.0631 9574-SS-140910-01-10 9/10/2014 0.0546 0.129 0.22 1.05 0.156 0.0793 1.17 0.174 0.0772 1.12 0.174 0.0618 1.16 0.191 0.143 0.571 0.169 0.0644 0.0343 0.0497 0.0801 0.757 0.196 0.0339 9574-SS-140910-01-11 9/10/2014 0.0506 0.165 0.22 0.972 0.145 0.0737 0.972 0.136 0.0838 1.1 0.163 0.0831 0.977 0.142 0.0792 0.606 0.174 0.0587 0.0281 0.0398 0.0422 0.575 0.168 0.0338 9574-SS-140910-01-12 9/10/2014 0.0186 0.0775 0.221 1.01 0.154 0.0667 1.22 0.184 0.0858 1.02 0.192 0.156 1.14 0.21 0.139 0.747 0.199 0.0541 0.0564 0.0596 0.0673 0.997 0.233 0.0356 9574-SS-140910-01-13 9/10/2014 0.196 0.214 0.228 0.955 0.136 0.0657 1.02 0.14 0.0759 1.03 0.157 0.0856 0.978 0.157 0.0959 0.724 0.198 0.0368 0.0458 0.053 0.0458 0.744 0.201 0.0557 9574-SS-140910-01-14 9/10/2014 0.0705 0.0929 0.214 0.928 0.143 0.07 1.05 0.146 0.0605 0.967 0.162 0.0738 0.889 0.156 0.0802 0.705 0.193 0.0614 0.0294 0.0417 0.0441 0.607 0.178 0.0671 9574-SS-140910-01-15 9/10/2014 0.0174 0.0329 0.226 0.711 0.122 0.0679 0.805 0.121 0.0579 0.559 0.129 0.0626 0.871 0.14 0.11 0.434 0.145 0.0583
-0.00262 0.00524 0.0636 0.594 0.171 0.0336 9574-SS-140910-01-16 9/10/2014 0.000929 0.0403 0.232 1.26 0.169 0.0636 1.32 0.201 0.0904 1.17 0.166 0.0964 1.07 0.189 0.153 0.513 0.152 0.0537 0.049 0.0518 0.0585 0.835 0.198 0.0309 9574-SS-140910-01-17 9/10/2014 0.00743 0.045 0.225 1.28 0.187 0.0818 1.19 0.165 0.0698 1.14 0.204 0.0868 1.1 0.179 0.129 0.639 0.183 0.0619 0.0241 0.0427 0.077 0.844 0.213 0.0357 9574-SS-140910-01-18 9/10/2014
-0.00742 0.0464 0.212 1.14 0.186 0.093 1.34 0.193 0.0845 1.21 0.206 0.117 1.19 0.2 0.117 0.808 0.2 0.0618 0.038 0.0472 0.0615 0.745 0.191 0.0493 9574-SS-140910-01-20 9/11/2014
-0.0141 0.0477 0.205 1.24 0.172 0.0706 1.26 0.206 0.109 1.21 0.197 0.116 1.01 0.197 0.176 1.12 0.241 0.0571 0.0683 0.0614 0.041 0.71 0.187 0.0499 9574-SS-140910-01-21 9/11/2014 0.0192 0.0727 0.234 1.1 0.155 0.0549 1.07 0.156 0.0738 1.02 0.176 0.106 0.982 0.153 0.124 1.04 0.232 0.0504 0.0276 0.039 0.0413 0.705 0.187 0.0503 9574-SS-140910-01-22 9/11/2014 0.0451 0.0593 0.229 0.89 0.153 0.0861 0.922 0.131 0.0573 1.16 0.221 0.127 1.21 0.17 0.106 0.829 0.215 0.0646 0.0126 0.0315 0.0705 0.981 0.236 0.0372 9574-SS-140910-01-23 9/11/2014 0.0064 0.0542 0.229 1.04 0.175 0.0934 1.13 0.17 0.0835 1.29 0.244 0.149 1.37 0.229 0.115 1.14 0.254 0.0553 0.0728 0.0681 0.0688 0.994 0.235 0.0364 9574-SS-140910-01-24 9/11/2014 0.112 0.132 0.231 1.18 0.195 0.0964 1.2 0.165 0.0649 1.33 0.223 0.167 1.39 0.221 0.131 1.09 0.247 0.0546 0.0243 0.043 0.0776 0.992 0.234 0.0545 9574-SS-140910-01-25 9/11/2014 0.0568 0.11 0.242 1.21 0.181 0.084 1.23 0.164 0.0653 1.24 0.184 0.0936 0.99 0.156 0.126 0.887 0.216 0.0526 0.0691 0.0647 0.0654 0.959 0.226 0.0703 9574-SS-140910-01-26 9/11/2014 0.0376 0.147 0.228 1.03 0.144 0.0618 1.08 0.159 0.079 1.12 0.159 0.097 1.21 0.179 0.106 0.73 0.219 0.078 0.0187 0.0374 0.056 0.764 0.223 0.0449 9574-SS-140910-01-27 9/11/2014 0.00356 0.0663 0.237 1.07 0.159 0.0779 1.31 0.185 0.0818 1.04 0.179 0.136 1.05 0.163 0.11 1.16 0.255 0.0357 0.0592 0.0594 0.0444 0.956 0.228 0.0616 9574-SS-140910-01-28 9/11/2014 0.00967 0.0958 0.23 1.2 0.184 0.0878 1.28 0.188 0.089 1.22 0.236 0.11 1.39 0.201 0.131 0.871 0.217 0.0545 0.0595 0.0597 0.0447 0.895 0.22 0.0358 9574-SS-140910-01-29 9/11/2014 0.0735 0.0242 0.245 1.17 0.198 0.104 1.08 0.154 0.0808 0.995 0.189 0.159 0.955 0.16 0.146 0.842 0.208 0.0587 0.0114 0.0286 0.064 0.708 0.189 0.0513 9574-SS-140910-01-30 9/11/2014 0.0154 0.0133 0.23 1.01 0.154 0.0734 0.96 0.161 0.0864 0.996 0.17 0.0893 0.851 0.166 0.156 0.744 0.196 0.0349 0.0723 0.065 0.0434 0.787 0.203 0.0528 9574-SS-140910-01-31 9/11/2014
-0.00068 0.0573 0.225 0.857 0.126 0.0594 1.06 0.146 0.0498 1.1 0.159 0.0886 1.1 0.159 0.089 0.572 0.17 0.0695 0.0992 0.0754 0.0425 0.986 0.228 0.0517 9574-SS-140910-01-32 9/11/2014 0.000231 0.0252 0.231 0.952 0.169 0.0991 1.06 0.157 0.0709 0.359 0.239 0.371 1.17 0.177 0.0776 0.598 0.174 0.0602 0.0576 0.0578 0.0432 0.758 0.198 0.06 9574-SS-140910-01-33 9/11/2014 0.007 0.0391 0.233 1.01 0.165 0.0758 1.03 0.147 0.0689 0.933 0.178 0.137 0.954 0.153 0.119 0.772 0.196 0.0504 0.0138 0.0276 0.0413 0.828 0.203 0.0331 9574-SS-140910-01-34 9/11/2014 0.00142 0.0793 0.202 0.491 0.076 0.0333 0.618 0.0993 0.04 0.33 0.0648 0.0345 0.225 0.0848 0.0991 0.389 0.138 0.0524 0.0143 0.0287 0.043 0.494 0.156 0.0345 Average Average Average Average Average Average Average Average 0.044 0.985 1.071 0.978 1.017 0.707 0.035 0.738 St Dev St Dev St Dev St Dev St Dev St Dev St Dev St Dev 0.058 0.178 0.168 0.246 0.219 0.235 0.025 0.180 Min Min Min Min Min Min Min Min
-0.014 0.491 0.618 0.330 0.225 0.345
-0.003 0.379 Max Max Max Max Max Max Max Max 0.205 1.280 1.340 1.330 1.390 1.160 0.099 0.997 Reference Area Results Technetium-99 (pCi/g)
Radium-226 (pCi/g) Unknown Ingrowth Radium-226 (pCi/g) 21 Day Ingrowth Thorium-232 (pCi/g) (Ac-228)
Initial Count Thorium-232 (pCi/g) (Ac-228)
Final Count Uranium-234 (pCi/g) Alpha Spec Uranium-235 (pCi/g) Alpha Spec Uranium-238 (pCi/g) Alpha Spec