ML101970535

Gamma Spectrum Analysis, Oc

ML101970535
Person / Time
Site:	Oyster Creek
Issue date:	04/18/2009
From:	- No Known Affiliation
To:	Office of Information Services
References
FOIA/PA-2009-0214
Download: ML101970535 (5)

Text

~j &-.~ , 7 GAMMA SPECTRUM ANALYSIS OYSTER CREEK NUCLEAR GENERATING STATION CHEMISTRY DEPARTMENT Detector Name  : DET01 Report Generated On 4/18/09 1:36:19 PM Spectral Data File Name C: \PCNT2K\CAMFILES\1LSOLMDA

\2000056.CNF If.( t --

ea-0 es- (57- t"+(. .6-*?

Sample Title I-L Solid Releas Sample Description Soil near CST; 2' depth User ID kg 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 940.00 grams Sample Taken On 4./17/09 8:00:18 PM Acquisition Started 4/18/09 1:11:20 PM Decay Time 1.03E+003 Minutes Live Time 1796.0 Seconds Real Time 1797.1 Seconds Dead Time 0.06 %

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

Background Subtract Report 4/18/09 1:36:19 PM Page 2

• B

• • • • BA C KG R O UND S UB TR A CT RE P OR T Detector Name: DET01 Sample

Title:

I-L Solid Releas Peak Analysis Performed on: 4/18/09 1:36:19 PM Peak Energy Original Orig. Area Ambient Backgr. Subtracted Subtracted No. (keY) Area Uncert. Background Uncert. Area Uncert.

1 238.55 7. 17E+001 17.15 7.,17E+001 1.72E+001 2 582.92 1. 50E+001 8.71 1.50E+001 8.71E+000 3' 661.33 3. 15E+001 8.75 3.15E+001 8.75E+000 4 1172.72 1. 89E+002 16.16 1.89E+002 1.62E+001 5 1332.20 1 .38E+002 12.43 1.38E+002 1.24E+001 6 1460.20 3 .25E4001 6.03 3.25E+00i 6.03E+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 4/18/09 1:36:19 PM Page 3

N U C L I D E M D A R E P 0 R T Detector Name: DET01 Sample Geometry: 1-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 1.14E-006 1.14E-007 4.73E-007 569.32 15.43 8.02E-007 7.60E-008 604.70 97.60 1. 14E-007

5. 15E-008 795.84 85.40 2. 16E-007 8.11E-009 801.93 8.73 1. 96E-006

2. 08E-008 1365.15 3.04 3. 53E-006

7. 51E-007

+ CS-137 661.65* 85.12 1.57E-007 1.57E-007

1. 46E-007

+ = Nuclide identified during the nuclide identification

• =ýEnergy 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 4/18/09 1:36:19 PM Page 4

• • NI****EN*********** ******** *****F* ***********************************

• • • NU C L IDE ID ENT IFI C AT I ON R EP OR T Sample

Title:

1-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 K-40 0.942 1460.81* 10.67 2.46E-006 4.60E-007 CO-60 0.975 1173.22* 100.00 1. 25E-006 1.10E-007 1332.49* 100.00 1. 03E-006 9.48E-008 CS-137 0.984 661.65* 85.12 1.46E-007 4.07E-008 PB-212 0.709 87.20 6.30 89.80 1.75 238.63* 44.60 2 .30E-007 5.52E-008 300.09 3.41

• = 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 4/18/09 1:36:19 PM Page 5

S 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 K-40 0.942 2. 46E-006 4.60E-007 CO-60 0.975 1.13E-006 7.18E-008 CS-137 0.984 1.46E-007 4.07E-008 PB-212 0.709 2.30E-007 5.52E-008 Total Activity 3. 96E-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: 4/18/09 1:36:19 PM Peak Locate From Channel: 100 Peak Locate To Channel: 4096 Peak Energy Peak Size in Peak CPS No. (keY) Counts per Second  % Uncertainty 2 582.92 8.35E-003 58.07 M = First peak in a multiplet region m = Other peak in a multiplet region F = Fitted singlet Errors quoted at 1.000 sigma