ML102000461

Gamma Spectrum Analysis Oyster Creek

ML102000461
Person / Time
Site:	Oyster Creek
Issue date:	04/25/2009
From:	- No Known Affiliation
To:	Office of Information Services
References
FOIA/PA-2009-0214
Download: ML102000461 (5)

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GAMMA SPECTRUM ANALYSIS

• OCGS OYSTER CREEK NUCLEAR GENERATING STATION CHEMISTRY DEPARTMENT Detector Name  : DET01 Report Generated On  : 4/25/09 4:07:58 AM Spectral Data File Name  : C:\PCNT2K\CAMFILES\ILSOLMDA

\2000077.CNF s-co 4 Sample Title 1-L Solid Releas Sample Description  : soil n of cst 3

User ID nc226 Sample Type 20 Sample Geometry 1-L Marinelli Peak Locate Threshold 3.00 Peak Locate Range (in channels) 1 - 4096 Peak Area Range (in channels) 100 - 4096

.Identification Energy Tolerance 1.000 keV Sample Size 1547.00 grams Sample Taken On 4/25/09 3:45:47 AM Acquisition Started 4/25/09 3:50:49 AM Decay Time 5.04E+000 Minutes Live Time 1327.0 Seconds Real Time 1327.7 Seconds Dead Time 0.05 %

Energy Calibration Used Done On 1/8/09 Efficiency Calibration Used Done On 1/8/09

Background Subtract Report 4/25/09 4:07:58 AM Page 2

B*

• • • • B AC K GR OU ND S UB TR A CT R EP OR T Detector Name: DET01 Sample

Title:

I-L Solid Releas Peak Analysis Performed on: 4/25/09 4:07:58 AM Peak Energy Original Orig. Area Ambient Backgr. Subtracted Subtracted No. (keV) Area Uncert. Background Uncert. Area Uncert.

1 238.65 7. 99E+001 15.97 7.99E+001 1.60E+001 2 351.65 3 .61E+001 10. 11 3.61E+001 1.01E+001 3 582.61 3. 19E+001 7.15 3.19E+001 7.15E+000 4 609.11 2 .77E+001 7.67 2.77E+001 7.67E+000 5 661.01 1. 83E+001 7.07 1.83E+001 7.07E+000 6 1172.79 6 . 73E+001 8.92 6.73E+001 8.92E+000 7 -1332.21 5. 25E+001 7.89 5.25E+001 7.89E+000 M = First peak in a multiplet region m = Other peak in a multiplet region F = Fitted singlet Errors quoted at 1.000 sigma

Nuclide MDA Report 4/25/09 4:07:58 AM Page 3

N U C L I D E M D A R E P 0 R T

• • WW Detector Name: DETO0 Sample Geometry: I-L Marinelli Sample

Title:

1-L Solid Releas Nuclide Library Used: C: \GENIE2K\CAMFILES\AnSolMDA.NLB Nuclide Energy Yield Line MDA Nuclide MDA Activity Name (keV)  %) (uCi/gram) (uCi/gram)

(uCi/gram]

CS-134 563.23 8.38 7. 44E-007 8.85E-008

8. 59E-009 569.32 15.43 3. 42E-007

2. 42E-008 604.70 97.60 8. 85E-008

1. 70E-008 795 . 84 85.40 9. 63E-008 1.19E-008 801.93 8.73 9 99E-007 3.21E-008 1365.15 3.04 1. 91E-006

2. 06E-007

+ CS-137 661.65* 85.12 1. IOE-007 1.10E-007

6. 98E-008

+ = Nuclide identified during the nuclide identification

• = Energy line found in the spectrum

>= MDA value not calculated

@ = Half-life too short to be able to perform the decay correction

Interference Corrected Activity Report 4/25/09 4:07:58 AM Page 4

"** *** N U C L I D E IDENTIFICATION REPORT Sample

Title:

I-L Solid Releas Nuclide Library Used: C:\GENIE2K\CAMFILES\AnSolMDA.NLB IDENTIFIED NUCLIDES Nuclide Id Energy Yield Activity Activity Name Confidence (keV) (%) (uCi/gram) Uncertainty CO-60 0.979 1173.22* 100.00 3. 68E-007 4.92E-008 1332.49* 100.00 3.21E-007 4.87E-008 CS-137 0.937 661.65* 85. 12 6. 98E-008 2.70E-008 BI-211 0.583 351.10* 12.20 5. 07E-007 1.43E-007 404.80 4.10 PB-212 0.709 87.20 6.30 89.80 1.75 238.63* 44. 60 2.11E-007 4.24E-008 300.09 3 .41 BI-214 0.657 609.31* 46.30 1.79E-007 4.98E-008 934.06 3.21 1764.49 15.80

• = Energy line found in the spectrum.

@ = Energy line not used for Weighted Mean Activity Energy Tolerance : 1.000 keV Nuclide confidence index threshold 0.30 Errors quoted at 1.000 sigma

Interference Corrected Activity Report 4/25/09 4:07:58 AM Page 5

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 (uCi/gram) Uncertainty CO-60 0.979 3. 44E-007 3.46E-008 CS-137 0.937 6.,98E-008 2.70E-008 BI-211 0.583 5. 07E-007 1.43E-007 PB-212 0.709 2. 11E-007 4.24E-008 BI-214 0.657 1.79E-007 4.98E-008 Total Activity 1.31E-006

? = 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: 4/25/09 4:07:58 AM Peak Locate From Channel: 100 Peak Locate To Channel: 4096 Peak Energy Peak Size in Peak CPS No. (keY) Counts per Second  % Uncertainty 3 582.61 2 .40E-002 22.44 M = First peak in a multiplet region m = Other peak in a multiplet region F = Fitted singlet Errors quoted at 1.000 sigma