ML051950498
| ML051950498 | |
| Person / Time | |
|---|---|
| Site: | Saxton File:GPU Nuclear icon.png |
| Issue date: | 04/08/2005 |
| From: | Brosey B FirstEnergy Corp |
| To: | Office of Nuclear Reactor Regulation |
| References | |
| E910-05-030 E900-05-021, Rev. 0 | |
| Download: ML051950498 (35) | |
Text
Appendix A-1 (pages 1 to 9)
CZp SNEC CALCULATION COVER SHEET CALCULATION DESCRIPTION:
Calculation Number Revision Number Effective Date Page Number E900-05-021 0
1 of 9
Subject OLII & Remaining OL12 Open Land Area - Survey Design Question 1 - Is this calculation defined as in QA Scope? Refer to definition 3.5. Yes 0 No El Question 2 - Is this calculation defined as a 'Design Calculation'? Refer to definitions 3.2 and 3.3. Yes 0 No [I NOTES: If a 'Yes-answer is obtained for Question 1, the calculation must meet the requirements of the SNEC Facility Decommissioning Quality Assurance Plan.
if a 'Yes' answer is obtained for Question 2, the Calculation Originator's immediate supervisor should not review the calculation as the Technical Reviewer.
DESCRIPTION OF REVISIUN APPROVAL SIGNATURES Calculation Originator I B. Brosey/
3' X
Date 3/0o Technical Reviewer R. Holme Date A7 tob Additional Review A. Paynterl
/
Date i r
, VLO Additional Review Date I
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Calculation Number Revision Number Page Number E900-05-021 I
0 Page 2 of 9 Subject OLII & Remaining OL12 Open Land Area - Survey Design 1.0 PURPOSE 1.1 The purpose of this calculation is to develop a survey design for the SNEC site area designated 'OL11" and a section of 0L12 which resides outside of the PENELEC Switch Yard. These areas are -13,352 square meters in total surface area, and are divided into three (3) - Class 2 survey units. This design applies only to open land areas. Additional designs may be developed for structural surfaces as deemed appropriate by SNEC management. These areas are shown on Attachment 1-1.
1.2 OL11 is sub-divided into two (2) survey units while the remaining section of OL12 (designated OL12-1) is one survey unit. These areas have the following individual surface areas:
- OL11-1, -5,000 square meters,
- OL11-2, -5,200 square meters, and OL12-1, -1,152 square meters 2.0
SUMMARY
OF RESULTS The following information should be used to develop a survey request for these survey units.
The effective DCGLw value is listed below for these survey units. The US NRC has reviewed and concurred with the methodology used to derive these values. See Attachment 2-1 through 2-3.
This mix is developed from samples taken from the OL11 area.
Table 1, DCGLw Values Survey Units Volumetric DCGLw(pCipg-Cs-137)
All 3.22 (2.41 A.L.)
NOTE: A.L. Is the site Administrative Limit (75% of effective DCGLw) 2.1 Survey Design 2.1.1 Scanning of soil (and fill materials) shall be performed using a 2" D bV 2" L Nat detector with a Cs-137 window setting (Reference 3.1). The window shall straddle the Cs-137 662 keV full energy peak width (see typical calibration information on -1).
2.1.2 The instrument conversion factor/efficiency shall not be less than 206 cpm/uRth -
2.1.3 Other instruments of the type specified in Section 2.1.1 above may be used during the final status survey (FSS), but must demonstrate detection efficiencies at or above the value listed in Section 2.1.2.
Table 2, Soil Scanning Parameters MDCscan (pCilg) - Cs-137 Scan Speed (cmlsec)
Maximum Distance from Surface Action Level
% Coverage 100% of 5.97 25 4- (gap between detector face & soil surface)
> 350 gcpm Designated
_ _ _ _ _ _ _ _ _ _ _ __e A_
t o h 3 o u aG rid s See Attachment 4-1 through 4-3 for actual calculations'
~
SNEC CALCULATIN SHEET :.
Calculation Number Revision Number Page Number E900-05-021 0
Page 3 of 9 Subject O11 & Remaining OL12 Open Land Area -Survey Design 2.1.4 If a count rate greater than the action level of Table 2 is encountered during the scanning process, the surveyor should stop and locate the boundary of the elevated area. The surveyor should then mark the elevated area with stakes and/or other appropriate marking methods. To complete the investigation, sample elevated areas(s) IAW SNEC procedure E900-IMP-4520.04 (Reference 3.2), and Section 2.2 of this calculation.
2.1.4.1 Class 2 soil should be scanned using a serpentine pattern that is -0.5 meters wide.
2.1.4.2 Scanning locations are randomly chosen on a per grid basis. Grids that can not be accessed should be clearly noted along with the reason for not completing the scan in that area. Scanning of partial grid areas is permitted with proper documentation.
2.1.4.3The minimum number of scan locations (-50% of each survey unit) are identified by the VSP computer program (Reference 3.3), and are listed in Table 3 (see Attachment 6-1). Additional randomly chosen grids are provided so that a 50% scanning goal can be reached even if some grid areas (or grid sections) are deemed inaccessible. There is no need to scan these extra grid areas if the minimum scanning goal is attained (i.e., -50% coverage).
Table 3, Randomly Located Grids for Scanning Survey Unit Number of Grids OLI 1-1 25 (29 provided)
OL11-2 26 (30 provided)
OL12-1
<6 (- 6 provided)
See Attachment 5-1.
2.1.5 The minimum number of randomly located sample points required for these survey units are listed in the following Table (see Compass output on Attachment 6-1 through 6-10). The surveyor should attempt to collect all samples listed below, but must collect the minimum values listed for each survey unit.
Table 4, Randomly Located Sample Points Survey Unit No. of Samples OL 1-1 14 min. (17 provided)
OLI 1-2 14 min. (17 provided)
OL12-1 14 min. (17 provided)
See Attachment 7.1 to 7-2.
2.1.6 Sampling depth should be lAW Seotion 2.2.
SNEC CALCULmlhON SHEET Calculation Number Revision Number Page Number E900-05-021 0
Page 4 of 9 Subject OLI I & Remaining OLI 2 Open Land Area - Survey Design 2.1.7 Because the MDCscan (soil) is above the DCGLwc>,37, these Class 2 survey units are assumed to be Class I areas for purposes of data entry into the Compass computer program, thus forcing Compass to evaluate the number of samples based on the 'Hot Spot" design criteria (see Attachment 6-4 and 6-10).
2.1.8 VSP (Reference 3.3) is used to plot all scan and sample point locations in the included diagrams.
The actual number of random start systematically spaced measurement points may be greater than that required by the Compass computer code because of any or all of the following:
placement of the initial random starting point (edge effects),
- odd shaped diagrams, and/or coverage concerns/Hot Spot design requirements 2.1.11 The starting points for physically locating sample sites in the survey unit are based on measurements from selected site grid pins (see Attachment 7-1 diagram).
Remaining soil sampling points are positioned using coordinates/measurements developed from these markers and the current she grid map.
2.1.12 Some sampling points may need to be adjusted to accommodate obstructions within these survey units. Contact the SR coordinator to report any difficulties encountered when laying out sampling points.
2.1.13 When an obstruction is encountered that will not allow collection of a sample, contact the cognizant SR coordinatorfor permission to delete the sampling point.
NOTE If remediation actions are taken as a result of this survey, this survey design must be revised or re-written entirely.
2.2 Sample elevated areas(s) IAW SNEC procedure E900-IMP-4520.04 (Reference 3.2) and the following.
2.2.1 Collect a one meter deep sample at all locations.
NOTE Since the site surface dose model is 1 meter in depth, 1 meter deep samples must be collected to satisfy the initial sampling requirements of Section 2.1.5 (of this design).
Sections 4.2.3, 4.2.6 or 4.2.7 of site procedure E900-IMP-4520.04 are applicable when satisfying sampling requirements of this calculation.
2.2.2 Clearly mark, identify and document all sample locations.
2.3.1 As a part of the investigation process, sample any location that is above the action level cited is Table 2.
SNEC CALCULATION SHEET Calculation Number Revision Number Page Number E900-05-021 0
Page 5 of 9 Subject OLI1 & Remaining OL12 Open Land Area - Survey Design
3.0 REFERENCES
3.1 SNEC Calculation No. E900-03-018, uOptimize Window and Threshold Settings for the Detection of Cs-1 37 Using the Ludlum 2350-1 and a 44/10 Nal Detector, 817103.
3.2 SNEC Procedure E900-IMP-4520.04, 'Survey Methodology to Support SNEC License Termination'.
3.3 Visual Sample Plan, Version 2.0 (or greater), Copyright 2002, Battelle Memorial Institute.
3.4 Compass Computer Program, Version 1.0.0, Oak Ridge Institute for Science and Education.
3.5 Plan SNEC Facility License Termination Plan.
3.6 SNEC Procedure E900-IMP-4500.59, 'Final Site Survey Planning and DQA'.
3.7 SNEC Survey Request No. SR-1 35, MA6 and MA7 Areas (now OL11), 6-10-04.
3.8 GPU Nuclear, SNEC Facility, 'Site Area Grid Map', SNECRM-020, Sheet 1, Rev 2,1129/03.
3.9 SNEC Calculation No. E900-03-012, Effective DCGL Worksheet Verification.
3.10 SNEC Procedure E900-IMP-4520.06, 'Survey Unit Inspection in Support of FSS Design'.
3.11 NUREG-1575, 'Multi-Agency Radiation Survey and Site Investigation Manual', August, 2000.
3.12 Microsoft Excel 97, Microsoft Corporation Inc., SR-2, 1985-1997.
4.0 ASSUMPTIONS AND BASIC DATA 4.1 The Compass computer program is used to calculate the required number of random start systematic samples to be taken in the survey unit (Reference 3.4).
4.2 Characterization soil samples from this area are used as the initial estimate of variability.
These results are shown on Attachment 8-1. The grid locations where these samples were taken are also shown (Reference 3.7).
4.3 The MARSSIM Sign Test will be applicable for this survey design. No background subtraction will be performed underthis criteria during the application of the DQA.
4.4 The number of points chosen by Compass are located on the survey map for the survey unit by the Visual Sample Plan (VSP) computer code (Reference 3.4).
4.5 Reference 3.5 and 3.6 were used as guidance during the survey design development phase.
4.6 Background in the OL1 1 area is less than 300 cpm (Reference 3.7). For purposes of calculating the MDCscan value used for planning purposes, background is assumed to be approximately 200 cpm.
4.7 The site area drawing used to determine the physical extent of the area is listed as Reference 3.8.
SNEC CALCULATION SHEET.
Calculation Number Revision Number Page Number E900-05-021 0
Page 6 of 9 Subject O11 & Remaining OLI 2 Open Land Area - Survey Design 4.8 Remediation History No significant remediation has occurred in the OL11 or OL12 areas with respect to open land area. Miscellaneous concrete structures in these survey areas will be addressed in a separate survey designs as deemed appropriate by SNEC management.
4.9 This survey design uses Cs-137 as a surrogate to bound the average concentration for all SNEC facility related radionuclides in the survey unit. The effective DCGLw is just the permitted Cs-137 concentration (6.6 pCVg) lowered to compensate for the presence (or potential presence) of other SNEC related radionuclides. In addition, an administrative limit (75%) has been set that further lowers the permissible Cs-137 concentration to an effective DCGLw for this radionuclide.
4.10 The sample database used to determine the effective radionuclide mix for the OL11 area has been drawn from samples that were assayed at off-site laboratories. This list is shown on Attachment 2-2. The data shows Cs-137 to be the predominant radioactive contaminant found in these areas.
The decayed set of sample results were input to the spreadsheet titled 'Effective DCGL Calculator for Cs-137' (Reference 3.9) to determine the effective volumetric DCGLw values. The output of this spreadsheet is shown on Attachment 2-3.
4.11 The Nal scan MDC calculation is determined based on a 25 cm/sec scan rate, a 1.38 index of sensitivity (95% correct detection probability and 60% false positive) and a detector sensitivity of 206 cpm/uRlh for Cs-137. Additionally, the detection system incorporates a Cs-1 37 window that lowers sensitivity to background in the survey unit.
4.12 The survey units described in this survey design were inspected by site personnel. A copy of portions of the SNEC facility post-remediation inspection report (Reference 3.10), is included as Attachment 9-1 to 9-Z.
4.13 No special area characteristics including any additional residual radioactivity (not previously noted during characterization) have been identified in this survey area.
4.14 The decision error for this survey design is 0.05 for the a value and 0.1 for the C value.
4.15
'Special measurements" (as described in the SNEC LTP) are not included in this survey design.
4.16 No additional sampling will be performed lAW this survey design beyond that described herein.
4.17 SNEC site radionuclides and their individual DCGLw values are listed on Exhibit I of this calculation.
4.18 The survey design checklist is listed in Exhibit 2.
4.19 Area factors are shown as part of Compass output (see Attachment 6-1).
5.0 CALCULATIONS 5.1 All calculations are performed internal to applicable computer codes or within an Excel spreadsheet.
E--
SNEC CALCULATION SHEET..->..:
Calculation Number Revision Number Page Number E90D-05-021 0
Page 7 of 9 Subject OL1I & Remaining OL12 Open Land Area - Survey Design 6.0 APPENDICES 6.1 -1, is a diagram of survey area 1L11 & OL12-1 areas (in northwest quadrant of SNEC site).
6.2 -1 to 2-10 is the sample results from the OL11 site area including. In addition, the DCGL calculation sheets have been included.
6.3 -1, is a copy of calibration data from typical Nal radiation detection instrumentation that may be used in this survey area (LAW Section 2.1.2).
6.4 -1 through 4-3, is the MDCscan calculation and supporting MicroShield output for volumetric materials.
6.5 -1, is the scan locations for the CL11 survey units.
6.6 -1 through 6-10, are Compass output for the CL11, and the OL12-1 areas showing the number of required sampling points for these survey units.
6.7 -1, is the sample point locations with dimensions for each survey unit.
6.8 -1, is the soil variability results for selected soil samples from the 1L11 area.
6.9 -1 to 9-Z'..
, is a copy of selected portions of the inspection reports for these areas.
SNEC CALCULAllON SHEET Calculation Number Revision Number Page Number E900-05-021 0
Page 8 of 9 Subject C11 & Remaining 0L12 Open Land Area - Survey Design Exhibit I SNEC Facility Individual Radionuclide DCGL Values (a) 25 mremly Limit 4 mrernly Goal 25 mremly Limit (All Pathways)
(Drinking Water)
Radionuclide Surface Area Open Land Areas Open Land Areas (
(dpmlO00cm 2)
(Surface & Subsurface)
(Surface & Subsurface)
(pCilg)
(pCug)
Am-241 2.7E+01 9.9 2.3 C-14 3.7E+06 2
5.4 Co-60 7.1E+03 3.5 67 CS-1 37 2.8E+04 6.6 397 Eu-152 1.3E+04 10.1 1440 H-3 1.2E+08 132 31.1 Ni-63 1.8E+06 747 1.9E+04 Pu-238 3.OE+01 1.8 0.41 Pu-239 2.8E+01 1.6 0.37 Pu-241 8.8E+02 86 19.8 Sr-90 8.7E+03 1.2 0.61 NOTES:
(a) While drinking water DCGLs will be used by SNEC to meet the drinking water 4 mrem/y goal, only the DCGL values that constitute the 25 mrem/y regulatory limit will be controlled under this LTP and the NRC's approving license amendment.
(b) Listed values are from the subsurface model. These values are the most conservative values between the two models (i.e..
surface & subsurface).
Exhibit 2 Survey Design Checklist Calculateon No.
n ardes E900-05-02i OU1i & OL12-1 Outride the PENELEC Switch Yard r Status Reviewer ITEM REVIEW FOCUS (Circle One) Inrtials & Date Has ta survey d
esign calculation number been assigned and i
s a survey design summary Ye N/A
't,4
~~d es cripti on provided ?
a 2
Are drawvings/diagrams adequate for the subject area (drawings should have compass N/A ~
s q7 headings)?
171er {-
3 Are boundaries properly identified and is the survey area class'fication clearly indicated?
17/IA Vi
/
4 H as the survey area (s) been property divided into survey units IAW EXHIBIT I N/04h 5
Are physical characteristics of the areallocation or system documented?
Ye N/A 6
Is a remediation effectiveness discussion Included?
- Yes, 7
Have characterization survey and/or sampling results been converted to units that are Yes, N/A comparable to applicable DCGL values?
S Is survey and/or sampling data that was used for determining survey unit variance included?
eYs NIA 1
iA
/7 Is a description of the background reference areas (or materials) and their survey and/or Yes,/
sampling results included along with a justification for their selection?
Y esY' 10 Are applicable survey and/or sampling data that was used to determine variability included?
lI N/A/
11 Will the condition of the survey area have an impact on the survey design, and has the Yes(d' probable imoact been considered in the desion?
Has any special area characteristic including any additional residual radioactivity (not 12 previously noted during characterization) been identified along with Its Impact on survey Yes Idesion?
I 13 Are all necessary supporting calculations and/or sie procedures referenced or included?
WA 14 Has an effective DCGLw been identified for the survey unit(s)?
Was the appropriate DCGLeUC included in the survey design calculation?
N/A,
16 Has the statistical tests that ll be used to evaluate the data been Identified?
(
NA 17 Has an elevated measurement comparison been performed (Class I Area)?
- Yes, 9
/?
18 Has the decision error levels been identified and are the necessary justifications provided?
NIA t g C 19 Has scan instrumentation been identified along with the assigned scanning methodology?
G N/A 20 Has the scan rate been identified, and is the MDCscan adequate for the survey design?
NIA 21 Are special measurements e.g., in-shu gamma-ray spectroscopy required under this design,
- Yes, and is the survey methodology, and evaluation methods described?
_>6 t
22 Is survey instrumentation calibration data included and are detection sensitivities adequate?
W/A 23 Have the assigned sample and/or measurement locations been dearly identified on a diagram A
or CAD drawing of the survey area(s) along with their coordinates?
NA___
24 Are investigation levels and administrative limits adequate, and are any associated actions 7105
_____clearly indicated?
25 For sample analysis, have the required MDA values been determined.?
- Yes, 26 Has any special sampling methodology been identified other than provided In Reference 6.3?
Yes.
g NOTE: a copy of this completed form or equivalent, shall be Included within the survey design calcu.tion.
Appendix A-1 (afttchments 1-1 to 4-3)
,>,141 147 146 145 144 143 140 139 138 137 136 135 134 133 132 131 130 129 128 A
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DCGL Calculation Logic - SNEC Facility Open Land Area OLI I Survey Units: SNEC Site survey unit named OL11 II.
==
Description:==
The purpose of this calculation is to determine a representative isotopic mix from available sample analyses for the OL11 (and a section of the OL12) survey areas of the SNEC Facility site. The effective volumetric DCGLWs are then determined from the mean percent of applicable samples.
Ill.
Data Selection Logic Tables: The radionuclide selection logic and subsequent DCGL calculations are provided in five (5) tables. These tables were developed using Microsoft Excel. Table explanation is as follows.
Table 1: Raw Data Listing - This table provides a list of three (3) representative sample analysis results. Results are from scoping, and characterization survey activities of the OL11 site area. The samples consist of soil and sediment samples that were taken in support of the aforementioned activities. As applicable, a sample number, sample location/description, radionuclide concentration, and analysis date are provided for each sample. Positive nuclide concentrations are noted with yellow shaded background fields while MDA values are noted in the gray shaded fields.
Table 2: Reduced Data Listing of Positive Results, MDAs Removed - This table provides the best overall representation of the raw data from table 1. Non-positive nuclide columns have been removed as well as all the MDA values leaving three (3) sample results. Thus, eleven (11) nuclides have been reduced to four (4) in this table.
Table 3: Decayed Sample List of Positive Results - This table decays the data from Table 2. Half-life values (in days) are listed above each respective nuclide column. Samples are decayed from their respective analysis date to March 15, 2005. Only positive results were decayed.
Table 4: Ratio to Cs-1 37 for Positive Sample Data - This table provides the calculation methodology for determining the surrogate ratio to Cs-137 for each radionuclide. From this information the mean, and mean % of total are calculated. The mean % of total values (normalized to 100%) are then used to calculate the effective volumetric DCGLW per MARSSIM equation 1-14.
See Table 5. Note that the mean percent values were averaged using only the positive sample results in each column. In some cases only a single nuclide value (e.g. Sr-90) had a positive result. This value is listed as the mean value in the tabulation. Therefore, this treatment results in a higher 'mean percent of total" value for the mix, which is considered a conservative approach.
Table 5: Effective DCGL Calculator for Cs-137 (in pCilg) - This table provides the surrogate volumetric modified Cs-137 DCGLW calculation results from data derived from Table 4.
IV.
Summary - The OL11 site area is largely soils and or rock material thus the release limit is based on a volumetric DCGLW. Using the above data selection logic tables the calculated Cs-137 surrogate volumetric DCGLW is 3.22 pCi/g. This value is reduced by 25% as part of SNEC's commitment to apply an administrative limit as discussed in the License Termination Plan (LTP). Since positive sample result concentrations for Cs-137 are low in these open land areas, any ratios developed are influenced by background levels of other radionuclides such as C-14. Thus this methodology is considered a conservative approach.
1 Ar1rA4wmeti 2.-I
f TABLE 1 -RAW DA-TA LISTING SIIEC Sample Ho LAB No.
Location.Desci iption H-3 S.-9" Co-6 Cs-37 Am-24l Pu1-238 Pu-239 Pu3-241 C-14 11i-63 Ett-152 Analysis Date SXSL7483 TeledyneL25070-1-3 Soil,SR-164,BO-138,SP2,011 <0.748 0.0771
< 0.0246 1.57
< 0.0174
< 0.0297
< 0.0407 < 3.17 0.362 1.9
<0.095 September 15,2004 SXSLOO87
_Teledlpe;L2144I-48 12198-1 BF-143, SURFA01, OLI1
< 2.04
< 0.0333
< 0.0165 2.34
< 0.01471 < 0.00651
< 0.0653 1< 2.11 < 0.1391 < 18.41< 0.345 October6, 1999 SXSL0089 Tele(dye;L21441-5 BE-140 SURFA01 OL11
< 2.05
< 0.0355
< 0.0121 1121
<0.01361 <0.0326
<0.023 <c142 <0.114 <16.2 <0.028 October6 1999 KEY Yeliov, Shaded Backgrounld = Positive Resull lGray Shaded Background = MDA TABLE 2 - REDUCED DATA LISTING OF POSITIVE RESULTS, MDAs REMOVED SIIEC Sample llo LAB llo.
LocationDesciiption Si -90 Cs-37 C-14 lli-63 Analysis Date SXSLOO87 Teledyne; 121441-4 & L21898-I E
BF-1 43, SURFA01, 11 2.34 October 6, 1999 SXSLOO89 Teledyne: L21441-5 BE-140, SURFA01 OL1 1.21 l
October6, 1999 SXSL7483 TelledyneL25070-1-3 Soil, SR-164,EBG-138,SP2,OLII 0.0771 1.57 0.362 1.9 September 16, 2004 TABLE 3 - DECAYED SAMPLE LIST OF POSITIVE RESULTS T1.2 ()I) 1 10446.165 11019.59251 2092882.51 36561.5251 1
3/15 :2005 SIIEC Sample llo LAB llo.
Location.Desciilption Si-90 Cs-1 37 C-14 lli-63 Elapsed id)
Analysis Date SXSLOO87 Teledyne; L21441-48 L21898-l BF-143, SURFAO1, 011 l
2,065 1987 October 6, 1999 SXSLOO89 Teledyne; L2144*-5 BE-1 40, SURFA01,O111
[
1.068 1987 October 6, 1999 SXSL7483 Teledyne, L25070-i-3 Soil, SR-164,BG-138,SP2, O111 0.076 1.552 0.362 1.893 181 September 15, 2004 TABLE 4 - RATIO TO CS-i 37 FOR POSITIVE SAMPLE DATA SIIEC Saumple llo LAB llo.
Location~iesci iltion SI-90 Cs-137 C-14 lli-63 Analysis Date SXSLOO87 Teledyne; 121441-4 & L21898-1 l F-1 43, SURFA01, OL11 lIl 1
l l
l October 6, 1999 SXSLOO89 Teledyne; L21441-5 BE-1 40, SURFA0111 lLI I
1 October 6, 1999 SXSL7483 Teledyne, L25070-1-3 Soil, SR-1 64, BG-1 38, SP2, O11 0.049 1
0.233 1.220 September 15, 2004 Ave rage =>
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1 0.233 1.220 2.502 Normalized to 100%=>
1.96%
39.97%
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l 100.00%
2 co [
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_75°fe Effective DC)GL Calculator for Cs-137 (in pCilg) 1 8.06 IpCi!9 I 6.04 II)C G9 I
SAMPLE HIUMBERIsI1IOL11 Open Land At ec I
31.06%
25.0 322 2.41 CI
mu emnj TEDE Limit I
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4 5
6 7
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Sample Input lpCiig, tlCi.
25 mi em.n TED Isotope etc. I of Total Limits (pCiiWg AI1m-241 0.000%
9.9 C-14 0.23 9.312%
2.0 Co-60 0.000%
3.5 Cs-I37 1.00 39.966%
6.6 Eu-152 0.000%
10.1 H-3 0.000%
132 Ni1;3 1.22 43.759%
747 Pui-238 0.000%
1.8 Pu-239 0.000%
1.6 Pu-241 0.000%
86 S,-90 0.019 1.963%
1.2 A - Allowed pCiig fo.
25 n. em.9 TEDE 0.00 075 0.00 3.22 0.00 0.00 3.93 0.00 0.00 0.00 0.16 8.06 This SampleI un em.e TEDE 0.04 2.91 0.00 0.00 1.02 7.764 Am-241 C-14 Co-60 Cs-I 37 Eu-152 H-3 NI-63 Ptu-238 Ptu-239 Ptu-241 Si -90 I 2.50E+00
/100.000%
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2350 INSTRUMENT AND PROBE EFFICIENCY CHART 02/22/05 Added 2350-1 #126218 with 43-68 #095080 and 2350-l
- 126188 with 43-68 #099186. Returned from DURATEK following calibration. Typical - 2" by 2" Nat (w) Inst. Response'I Inst.#
Cal Due AP #
Probe #
-Cal Due cpmlmRfh 95361 6/25/05 P&W 25686 Pk 6/28/05 211,799 98620 120/S GW196022 Pk 12/01/05 204,609 98642 9/28/05 B&W 85844 Pk 9/28/05 209,771 98647 1/02/05 G &Y 211667 Pk 1/02/05 213,180 117566 01/05/06 ROR 402PK 01/13/06 205411 117573 5/18/05 O &Y 211674 Pk 5/18/05 212,173 129407
.2/17/05 White 206280 12117/05 222,724 129423 5/18/05 P &Y 211687 Pk 5/18/05 213,539 129440 11/01/05 O&W 210938 Pk 11/01/05 196,636 126198 11/22/05 R&W 196021 11/22/05 210398
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AITACWAMENT 3.I1,
MicroShield v5.05 (5.U5-UU1Z1)
GPU Nuclear
- 1 e: SOIL.MS5 te: March 29, 2005 ie: 3:38:06 PM
- 00:00:03 File Ref:
Date:
By:
Checked:
Case
Title:
Soil
==
Description:==
Soil Density 1.45 glcc, 6" Deep Cylinder @ 4" from Surface t Geometry: 8 - Cylinder Volume - End Shields 4
Height Radius Source Dimensions 15.24 cm 28.21 cm 6.0 in 11.1 in X
- 1 0cm 0.0 in Shield Name Source Air Gap Dose Points Y
27.94 cm 11.0 in z
0cm 0.0 in Shields Dimension 3.81e+04 cm3 Material Concrete Air Density 1.45 0.00122 Nuclide Ba-1 37m Cs-1 37 Source Input Grouping Method : Actual Photon Energies curies becquerels uCicm3 5.2264e-008 1.9338e+003 1.3717e-006 5.5247e-008 2.0441 e+003 1.4500e-006 Bq/cm3 5.0753e-002 5.3650e-002 Buildup The material reference is : Source Integration Parameters Radial Circumferential Y Direction (axial) 60 60 60
- 9 ActivitV V
photons/sec 18 4.003e+01 22 7.386e+01 64 2.688e+01 16 1.740e+03
.LS:
1.881e+03 Fluence Rate MeV/cm2 lsec No Buildup 6.785e-06 1.305e-05 7.222e-06 5.968e-02 5.971 e-02 Results Fluence Rate MeV/cm 2/sec With Buildup 8.211 e-06 1.589e-05 9.428e-06 1.023e-01 1.023e-01 Exposure Rate mR/hr No Buildup 5.652e-08 1.050e-07 4.103e-08 1.1 57e-04 1.159e-04 Exposure Rate mR/hr With Buildup 6.840e-08 1.278e-07 5.357e-08 1.983e-04 1.986e-04 Ai-rAc.'A4;FNT
Nal Scan MDC Calculation-CV Soil.mcd Nal Scan MDC Calculation b := 200 p := 0.5 HS d := 56.42 SR:=25 d:=1.38 Conv := 206 MS output := 1.157-10-4 HS d
2.257 SR Observation Interval (seconds) b* :
60 60 oi*
HS d HSR b i = 7.523 Observation Interval (seconds)
Counts MCRi :=
MDCR i = 100.629 net counts per minute MDCR i surveyor :=
MDCRsurveyor = 142.311 net counts per minute MDCR surveyor MDERC Conv MDER = 0.691
[LR/h MDC scan :=
MDER MS output 1 10 MDC scan = 5.971 pCilg 312712005 4 of 5 A1TAHMENT
'-I
Nal Scan MDC Calculation-CV Soil.mcd where:
b = background in counts per minute bi background counts in observation interval Conv = Nal manufacturers reported response to energy of contaminant (cpm/uR/h) d = index ofsensitivity (Table 6.5 MARSSIM), 1.38 = 95% of correct detection's, 60% false positives HSd = hot spot diameter (in centimeters)
MDC5¢0n = Minimum Detectable Concentration for scanning (pCi/g)
MDCR, = Minimum Detectable Count Rate (ncpm)
MDCR,,wr = MDCRj corrected by human performance factor (ncpm)
MDER = Minimum Detectable Exposure Rate (uRAh)
MSo,,,p,,, = MicroShield output exposure rate for I pC11g of contaminant (mR/h) 0j = obervation Interval (seconds) p = human performance factor SR = scan rate in centimeters per second NOTE This is an example of an MDCscan calculation that is valid for a specific set of site conditions, and assumptions. These variables include the computer model used, soil density, soil moisture content, surveyor efficiency, ground cover, soil background radionuclide content and other variables that influence calculated results. However, this scan MDC has been deemed appropriate for initial survey planning purposes at this site location.
3127/2005 5 of 5 ATTACGWA2NT Z-_.
Appendix A-1 (attachments 5-1 to 9-2)
147 146 145 144 143 142 '141 140 139 138 137 136 135 134 133 132 131 130 129 128
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ATTACHMENT 5 -1
Site Report Site Summary Site Name:
OL 1, Open Land Area Planner(s):
BHB Contaminant Summary NOTE:
Surface soil DCGLw units are pCilg.
Building surface DCGLw units are dpm/100 Cn'.
Screening Value Used?
Cont Cs-1:
aminant TvDe DCGLw Area (ml)
Area Factor I I- -
z 37 Surface Soil 2.41 No 10,000 2,500 400 100 25 1
1 2.3 3
3.6 4.7 28.7 COMPASS v,4 n n A_
U.S WZI9zUU5 ATTACWniENM
- 4.
1-Page I
Surface Soil Survey Plan Survey Plan Summary Site:
OL Planner(s):
B-Survey Unit Name:
OL Comments:
Ch Area (M2):
5,C Selected Test:
Sic DCGL (pCig):
2.d LBGR (pCi/g):
1.2 Alpha
0.(
Beta:
0.1 Scanning Instrumentation:
.11, Open Land Area lB
.11-1, Open Land Area lss 2 Area Entered as Class
)00 ign 41 050 100 Classification:
Estimated Sigma (pCi/g):
Sample Size (N):
Estimated Conc. (pClg):
Estimated Power EMC Sample Size (N):
1 0.468 14 0.6 1
14 2" by 2" Nal (w)
Prospective Power Curve
_ 1 os V..
_ 0.8 A
-F 0.7 Cs
- 0.6
- 2 05
_ 0.4 A- 0.3 09 S..
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Power LBGR 1.0 15 2.0 25 Soil Concentration p Cifg), including backgrund DCGL Esimated Power I-beta 3.0 Be
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312912005 A TACHiAENT-L -
2-a Page 1
Surface Soil Survey Plan Contaminant Summary DCGLw Inferred Modified DCGLw Scan MDC Contaminant (pCilg)
Contaminant Ratio (pC g)
(pC g)
Cs-1 37 2.41 N/A N/A N/A 5.971 Survey Unit Estimate (Mean +/- 1-Sigma)
(pC[lg)
Reference Area Estimate (Mean +/- 1-Sigma)
(pCi1g)
Contaminant Cs-1 37 0.641 +/- 0.468 0.28 i 0.39 COMPASS v1 fA nfl
__PwlW row
- lxV.V ATT ACRMENTT 1C 3
Page 2
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No additional samples are reqdred because the actual scan MDC is less than the requred scan MDC son (EMC) ing instrumentation used.Then enterascan MDCforeeach ALCULATE buttonto viewthe integrated survey design scan MDC and DCGL units are in pCi/g.
OK I
r Scanning Instrumentation
Description:
12' by 2" Nal (w) l Contaminant I Scan MDC I
-Enter Scan h4DC
{ Cs-1 37 5.971
- S -;.
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Statistical Design Hot Spot Design N: l 14 Actual Scan MDC r 5.971 Bounded Area (m): I 357.1 Area Factor l N/A Area Factor l 3.09 Bounded Area(m):
N/A DCrGLwl 2.41 Post-EMC N: l 14 l Scan MDCRequired: l 7.4 F Enable Training Card Help VI (1 0 BACl NEXT i
ATrACHMENr
Surface Soil Survey Plan Survey Plan Summary Site:
Planner(s):
Survey Unit Name:
Comments:
Area (m2):
Selected Test:
DCGL (pCilg):
LBGR (pCilg):
Alpha:
Beta:
OL11, Open Land Area BHB OL11-2, Open Land Area 5,200 Sign 2.41 1.7 0.050 0.100 Classification:
Estimated Sigma (pCi/g):
Sample Size (N):
Estimated Conc. (pCiig):
Estimated Power 2
0.468 14 0.6 1
Prospective Power Curve o1 ZP.
_ 0.8
~- 0.7 t 0.6 0.5
_ 0.4 0.3 V' 0.2
= 0.1
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05 1.0 15 20 25 Soil Cozncentration (pCi/g),ichdigbackg xd
-DCGL
-- nEstknated Power u
l-beta 3.0 Power LBGR AMUAQQ.4 n n A
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Page 1
Surface Soil Survey Plan Contaminant Summary DCGLw Inferred Modified DCGLw Scan MDC Contaminant (pCUg)
Contaminant Ratio (pC11g)
(pCUg)
Cs-1 37 2.41 N/A NIA NIA N/A Contaminant Cs-137 Survey Unit Estimate (Mean 1 1-Sigma)
(pC11g) 0.641 i 0.468 Reference Area Estimate (Mean +/- 1-Sigma)
(pC/g) 0.28 +/- 0.39 t1n.a.aa A I% ft wwm j v l.u.w A1TAC+GENT 4
- 4 Page 2
Site Report Site Summary Site Name:
Planner(s):
OL12, Open Land Area (OL12-1)
BHB Contaminant Summary NOTE:
Surface soil DCGLw units are pCilg.
Building surface DCGLw units are dprnl100 n2.
Contaminant Cs-1 37 Type Surface Soil DCGLw 2.41 Screening Value Used?
No Area (m')
10,000 2,500 400 100 25 1
Area Factor 1
2.3 3
3.6 4.7 28.7
- ICMPASS,
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. s.v.v 312912005 A7 Page 1
Surface Soil Survey Plan Survey Plan Summary Site:
0L12, Open Land Area (0L12-1)
Planner(s):
BHB Survey Unit Name:
aL1 2-1 Comments:
Class 2 Area Entered as Class 1 Area (M2):
1,152 Classification:
1 Selected Test:
Sign Estimated Sigma (pCig):
0.468 DCGL (pCi/g):
2.41 Sample Size (N):
14 LBGR (pCig):
1.7 Estimated Conc. (pCilg):
0.6 Alpha
0.050 Estimated Power 1
Beta:
0.100 EMC Sample Size (N):
14 Scanning Instrumentation:
2" by 2" Nal (w)
Prospective Power Curve
_ 1
,0.8 0.7 -1 nc0.6 0.5
'0.4 e03
~0.2 0.1 1
C 0S
- 1.
15 2.0 25 3.0 Soil Coicenxtmion 15 Cifg), indndinq tackground Power DCGL Estmated Power LBGR 1-beta COMPASS v1.0.0 312912005 Page 1 A,-AC4NEET 4
- 8
Surface Soil Survey Plan Contaminant Summary Contaminant Cs-I 37 DCGLw Inferred (pCUg)
Contaminant Ratio 2.41 NIA NIA Modified DCGLw Scan MDC (pCI/g)
(pClIg)
N/A 5.971 Reference Area Estimate (Mean +/- I-Sigma)
(pC0ig) 0.28 i 0.39 Survey Unit Estimate (Mean +/- I-Sigma)
(pC1101 Contaminant Cs-1 37 0.641 +/- 0.468 COMPASS vi fl f w
vv C 31YTItUOU AA-.GrnfiNt to 7
Page 2
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Nolddtional samples are requred because I)he t
ctual scan MDC is less than the required scan MDC I 1 OK i1
- m.
3-7
-I ison (EMC) j_-j.:fjI
ing instrumentation used. Then enter a scan MDCfor each
,ALCULATE button to viewthe integrated survey design scan MDC and DCGL units are in pCi/g.
Scanning Instrumentation
Description:
12 by 2N Nal (w)
Contaminant l
Sc Cs-1 37
.~
NUREG-1507 JEh Statistical Design Hot Spot Design N: l 14 Actual Scan MDC:
5.971 Bounded Area (mr: l 82.3 Area Factor l N/A Area Factor l 3.86 Bounded Area (m5): l N/A DCGLw:
2.41 Post-EMC N: l 14 Scan MDC Required: l 93!
A1/N
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I AY-137 ATTACHMENT
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I MLA -1
ORIGINAL ExWbtt I SurvAv Unit Insoccl~or Check Shber1 SECTION 1 - SURVEY UNIT INSPECTION DESCRIPTION Survey Unil #
OL1 1 Survey Unit Lccation NCrmwevt e
Open Laina Area Date 41/105 Time - 1230 l Insoecion Te3m Members !
D.Sargc SECTION 2 -SURVEY UNIT INSPECTION SCOPE I
Inspection Requirements (Check thle appropriate Yes/No ans-wer.)
i Yes No N/A I
1Yave sumfclerit sluveys (i e. pos rsnedwatien. tharacrtahaLmn. etc )jbeen obtained for the survoy una7 A
i
- 2.
Do the surveys (from Question 1) demonstrate that the survey unit wit most lly paiett the FS67S X I physcal work (i.e.. remediAtion e houseketoing) in or ground tho slarvy Un4 Complte?
ix 4I Have ali toos, nonr-ermanenl oquvipment, 2nd reocnwi noc needed to perfefm ve rsc fen rernovco' X
S Amr the survey 1surefee relatively frc: cf t ce rt-s (f a dirt. ccrrcre e au$ mteiw rrergs etc)?
iX X e
Are the strvey urfaces retatively free of hqui:ds (i.e., water, molature. of. etc.)7 lXI
- 7.
Arte Ms sveoy surfacoi 'roe o! aZ patrt. which has the potenttai to s&K d radiabon7 4x_
5 Iftaye tle Surtcc Sessurerent 'est Areas (SMAl been eetattiuhcVd (Recer to Exhiba 2 fcr Instructions)
X 9
Have the Surface Measurament Test Ateac (SMTA) data been collectea7 (Reter to ExrNbtt 2 for Inaruetions)
X e te survey surfacer. easwiy acceissole) (No scaffolding. hrgh reach etc. is needec to perform tme FSS) lX fr1.
icg.-Irng adequate to peniorm tte F SS' x
12 fr. the area induvinarlyucem to perform thc FSS2 (Evealute pccfnt'&l fi & trpD harards. Conrned spaces. etc.)
X 13 Have ohotogranzls been taken shewing the overall cond!2ton of the area?
x X
Have a-unaJUItfaclory conddieno bean rer Ived7 I
-__-_.___,1_
1 NOTE: If a 'Nd answer Is obtained above. the Inspector should Irmtedlatety correct the prottem or ihvfte corrective soctions through tse rnsponsibl ste department, as applicable Document acttons taken andhor jusilcations in the Comments sectlon below Attach additkonal asaats as sec;nry.
Comments l Survey Unit Inspector fprinVsign) IDate I
16105 Survey Designer (print/'sign)
- 0. Sre L6
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(At¢ iG;IN 8urvav Unit Ininedion Cher Sheet
- SECTION 1 - SURVEY UNITiNSPECTION DESCRIPTION OL12 Survey Unit LoCation Nonhwest Open Land Area-SwitchyarW Date 4/6/05 Time l 1245 Inspection Team Members D.Sarge SECTION 2 - SURVEY UNIT INSPECTION SCOPE Inspction Rcquircrnnts (Check the appropriate Yes/No answer.)
lYes'j No l N/A 1
Have suticiant surveys Co
- 6. post sernediation. charcderftallon. etc.) been obtained tor the survey l
Xu__
2 Do the survays t(from Question 1) demonsmale thet the survey uni wdil most lkely peas the FSS?
I X 3
ba the physical work (i.e.. resediabien & hOusekeepIng) in or around tre survey unit compistet 4
Have oil tools. ron-permanent equipment, and minerlai rnot neeode to p*1tfiM the FSS boun rurnoq t"?
I S.
Are the survey surfevc, W!t-iirefy free or loese dabrsz i e. di. T carcrcfe due.. metan m
~hp, er-,?
Are t"t survey cwrhces relatively free r liquitee ( e. waler. mosture. oil, t )?
- 7.
Are the survey suuracaa tr&. of aC paint, hich has thr potential to hleld radlation?
a Have ":e Surfece Metass.rment Test Areas (SMTAs been &Oablshedl jR{!e! to Exantt 2 r^- Mesuccns)
X 9
Have the Surface Measurernent Test Areas (SITA) dittao ben colleded? (Rafer to Exhlbk 2 tor irmtructions) l x
t0. Ate tme survey aurfaces easily acceseble" (No scatfolding, high reach. et is needed to pwform the FSS) 1X il.
lIs drgi.g aateuate to pertcrmr teF'7 iX
- 12.
to the arem induotnraty safe to ecrtcrrr the FS? (Ev2e!uee pecantlal fan & trlp ha1ards. een!ne t aces etc )
X
- 13.
Have phctocramhs been taken showing the overall cendlicin of the as a?
X 14 Have al; unsatisaoory conalions been resoved?
X NOTIF: It a tNo anewek ts oataned eaove. the insector shcutd nmmedistehy cceie-the tobern or inrtate corrective actcons through the rcpvnsiba sie departmet, as applie e Qccurnent actcins laean indtor lueftcstlonr in the Comert secton below. Attach additiorn sheets as nseesary Commrents:
Survey Unit Inspector (print/sign)
- 0. Sarge I Date 4WO5 j S Survey Designer (printlsign) l 3
te fle>CS sMDate