ML052140144
| ML052140144 | |
| Person / Time | |
|---|---|
| Site: | Saxton File:GPU Nuclear icon.png |
| Issue date: | 07/01/2004 |
| From: | Brosey B FirstEnergy Corp |
| To: | Office of Nuclear Reactor Regulation |
| References | |
| E900-04-012, Rev 0 | |
| Download: ML052140144 (62) | |
Text
Appendix B Chambers 2 and 3 area Survey Design
LtIk(Ri!NAL SNEC CALCULATION COVER SHEET CALCULATION DESCRIPTION Calculation Number Revision Number Effectivy Date Page Number E900-04-012 0 /30 1 1 of 10 Subject CV Tunnel & Top of Seal Chambers I & 2 Survey Design Question I - Is this calculation defined as 'in QA Scope'? Refer to definition 3.5. Yes ED No I Question 2-Is this calculation defined as a'Design Calculation'? Refer to definitions 3.2 and 3.3. Yes l No a Question 3 - Does the calculation have the potential to affect an SSC as described in the USAR? Yes I No l NOTES: Ifa '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. If a 'YES' answer is obtained for Question 3, SNEC Management approval is required to implement the calculation. Calculations that do not have the potential to affect SSCs may be implemented by the TR DESCRIPTION OF REVISION APPROVAL SIGNATURES Technical Reviewer Additional Review Additional Review SNEC Management Approval
q-t SNEC CALCULATION SHEET Calculation Number Revision Number Page Number E900-04-012 I 0 Page 2 of j° Subject CV Tunnel & Top of Seal Chambers I & 2 Survey Design 1.0 PURPOSE 1.1 The purpose of this calculation is to develop a survey design for the SNEC CV Steam Tunnel interior concrete surface and the top of Seal Chambers 1 and 2. Survey locations are shown on Attachment 1-1. Attachment 2-1 and 2-2 show the individual structures that are to be surveyed using this survey design.
2.0
SUMMARY
OF RESULTS 2.1 The following information should be used to develop a survey request for-this survey work:
2.1.1 Basic survey unit information is provided in the following Table.
Table 1, Basic Information Survey Survey Unit No. Area Description Classification Coverage Area (min)
SS22-1 CV Pipe Tunnel Floor 1 100% 20.6 SS22-2 CV Pipe Tunnel Walls 1 100% 47.8 SS22-3 CV Pipe Tunnel Ceiling 1 100% 16.2 SS17-2 Walls Around Top of Seal Chambers I & 2 2 50% 50.3 SS18-2 Top of Seal Chamber I & 2 1 100% 43.3 2.1.2 The effective DCGLw values for these survey units are provided below.
Table 2, DCGLw Values l Gross Surface DCGLw* (dpm/100 cm2) l Volumetric DCGLw* (pCllg) l Cs-137 Fraction l 20,609 4.74 (Cs-1 37) 0.992 Administrative limit (75% of DCGLw value) fromAttachment3-1 to 346.
2.2 Nal Scan Survey Work 2.2.1 Nal detector scanning parameters shall be 1AW MicroShield model(s) used to develop appolicable MDCscan values (see the following Table and Attachments 4-1 to 4-9).
Table 3,
SUMMARY
OF Nal SCANNING PARAMETERS Model Type Scan Speed Surface to Detector Face Calculated MDCscan Values Surface Deposition -2 per sec (5 cmi/sec) . 2 (5.1 cm) 4,128 - 5,838 dpm/100 cm2 (-100 -200 cpm bkgnd)_
Volumetric -2 per sec (5 cmi/sec) 2- (5.1 cm) 3.7 - 5.3 pCig Cs-1 37 (-100 -200 cpm bkgnd)
- NOTE: Values from Attachment 4-3 and 4-4 have been corrected to gross activity by dividing by the Cs-137 fraction from Table 2.
Ca SNEC CALCULATION SHEET Calculation Number Revision Number Page Number E900-04-012 0 l Page3of IC Subject CV Tunnel & Top of Seal Chambers 1 & 2 Survey Design 2.2.2 The Nal scan MDC calculation is determined based on a 5 cm/sec scan rate, a 1.38 index of sensitivity (95% correct detection probability and 60% false positive) and a detector sensitivity of at least 208 cpm/uR/h for Cs-137. Additionally, the detection system incorporates a Cs-137 window that lowers sensitivity to background in the survey unit. The resulting range of background values is about 100 cpm to -200 cpm. Thus the resulting MDCscan is about 3.7 to 5.3 pCi/g (see Attachment 4-1 to 4-9).
Table 4, Nal Scanning Instrumentation Parameters (Cont'd)
Scanning Width Required ConversionlEfficiency l 0.305 meters (12') > = 208 cpm'pR./h Minimum requirement See Attachment 5-1 for typical site instrument efficiencies as of 6-01-04.
2.2.3 All Nal detectors (2" by 2") shall employ a Cs-137 window setting (single channel analyzer). The window width should straddle the Cs-137 662 keV full peak (see Reference 3.1).
2.2.4 The following have been identified as the initial action levels for these survey units.
Table 5, Nal A"an Set-Point (in Gross CPM)
Material GCPM All Types 300 2.2.5 All survey personnel shall be trained to identify the action levels (alarm set-points are consdiered action levels) described above in Section 2.2.4 based on the audible instrument indicators.
2.2.6 If a count rate of greater than 300 gross cpm is identified during the scanning process, stop -and locate the boundary of the elevated area. Mark the elevated area with a magic marker, chalk or other appropriate marking tool.
2.2.6.1 Sample any elevated areas(s) lAW applicable sections of SNEC procedure E900-IMP-4520.04 (Reference 3-2), and _Section 2.4 of this survey design.
2.3 GFPC Survey Work 2.3.1 A gas flow proportional counter (GFPC) shall be used in the beta detection mode for this survey work (Ludlum 2350-1 with a 43-68B probe).
2.3.2 The action level during first phase scanning is 1.100 gross cpm. If this level is reached, the surveyor should stop and perform a count of at least 1/2 minute duration to identify the actual count rate (second phase scanning).
2.3.3 Areas greater than the DCGLw (2,077 ncpm) (identified during second phase scanning), must be documented, marked, and bounded to include an area estimate.
2.3.4 Following remediation, a portion of the survey unit inspection reports for these areas are included in this calculation as Attachment 6-1 through 6-8. For the CV tunnel
- - area (excluding core bore holes and unistrut areas), the Surface Measurement Test
SNEC CALCULATION SHEET Calculation Number Revision Number Page Number E900-04-012 0 Page 4 of J{
Subject CV Tunnel & Top of Seal Chambers I & 2 Survey Design Area (SMTA) result indicated that a nominal deviation from a smooth surface characteristic was -0.2 cm with some trough areas reaching 2" in depth. On the top of Seal Chamber 1 and 2, the mean SMTA result was -0.84 mm with one cradle having a roughness of up to 1.75". Using the larger of these values (2") and Reference 3.3 data, an efficiency correction factor (CF) of 0.328 is assumed for these areas. See Attachment 7-1.
Table 6, GFPC Detection Efficiency Used for Planning Material Type El* Es et (as %) % Cs-1 37 Efficiency CF Resulting counts/disintegration l All 0.478 0.5 23.9% 0.9916 0.33 0.0776
- See Attachment 5-1 as an example of current typical detector efficiency factors used at the SNEC site (as of 6/1104).
NOTE 1: Instruments are changed out frequently due to fe-calibration requirements and failures in the field. The 23.9% value in Table 6 above, is from a previous instrument calibration check for an instrument not currently in service.
NOTE 2: Total efficiency shal not be less than et value for any instrument used during this survey effort.
2.3.5 The Compass computer program (Reference 3.4) is used to calculate the required number of random 8-1 to 8-15.
Table 7, Minilpnum Random Start-Systematic Measurements Survey Unit No. Area Description No. of Points SS22-1 CV Pipe Tunnel Floor 8 SS22-2 CV Pipe Tunnel Walls 8 SS22-3 CV Pipe Tunnel Ceiling 8 SS17-2 Walls Around Top of Seal Chambers I & 2 8 SS18-2 Top of Seal Chamber 1 & 2 8 See Attachment 114- to 11-5 for point locations as plotted by VSP.
2.3.6 VSP (Reference 3.5) is used to plot all measurement points on the included diagrams. The actual number of random start systematically spaced sample/measurement points may be greater than that required by the Compass computer code because of:
- placement of the initial random starting point (edge effects),
- odd shaped diagrams, and/or
- coverage concerns Some starting point locations may need to be adjusted to accommodate obstructions within a survey unit. -Contact the SR -coordinator. to report any difficulties encountered when laying out random start systematically spaced sampling points.
Table 8,
SUMMARY
4OF GFPC SCANNING PARAMETERS Structural Material Scan Speed Surface to Detector Face All Types 0.9 per sec (2.2 cm/sec) Contact
F3 Fro - --
- -SNECd CALCULATION SHEET Calculation Number Revision Number Page Number E900-04-012 0 Page S of /0 Subject CV Tunnel & Top of Seal Chambers I & 2 Survey Design 2.3.7 Scanning efforts shall be based on audible speaker output levels. Earphones are recommended.
2.3.8 When an obstruction is encountered during the static measurement phase that will not allow placement of a static survey point, contact the cognizant SR coordinator for permission to delete that survey point. Document the reason for the deletion. Note that up to two survey points in any survey unit, may be deleted without reducing survey design effectiveness.
2.3.9 A smear survey shall be performed in each survey unit at static measurement point locations. These smears shall be obtained after static measurements are acquired.
These smears shall be assayed for beta/gamma and alpha contamination. A composite gamma scan of each survey units smear group shall be performed and reported.
2.3.10 Other instruments of the type seciiedin 2.3.1 above may be used durin the FSS but they must demonstrate an efficiency at or above the value listed in Table 6 (23.9%).
2.4 Sampling 2.4.1 Whenever possible, sample concrete by extracting a 4" long core bore so that the depth of penetration can be identified. When a core bore cannot be taken because of the quality of the concrete, or because of limited access in an area, sampling should remove the first 1" of concrete and yield a volume of at least 200 cc to ensure an adequate counting MDA for Cs-137 (a 4" diameter area by 1" deep =
-200 cc).
2.4.2 For steel surfaces, scrape the surface to collect a sample for gamma scanning by removing as much material as possible overrin the suspect area. Document the approximate size of the area where the materials were removed. Whenever possible, obtain a volume of no less then 25 cc's (200 cc's is preferred).
2.4.3 In general, samples shall be collected at biased locations where measurements indicate elevated count rates exist, or where measurement capability is deemed inadequate due to poor geometry.
NOTE If remediation actions are taken as a result of this survey effort, this survey design must be revised or re-written entirely.
3.0 REFERENCES
3.1 SNEC Calculation No. E900-03-018, uOptimized Window and Threshold Settings for the Detection of Cs-1 37 Using the Ludlum 2350-1 and a 44/10 Nal Detector", 817/03.
3.2 SNEC Procedure E900-IMP-4520.04, "Survey Methodology to Support SNEC License Termination".
3.3 SNEC Calculation No. 6900-02-028, OGFPC Instrument Efficiency Loss Study".
3.4 Compass Computer Program, Version 1.0.0, Oak Ridge Institute for Science and Education.
3.5 Visual Sample Plan, Version 2.0 (or greater), Copyright 2002, Battelle Memorial Institute.
CA_ SNEC CALCULATION SHEET Calculation Number Revision Number Page Number E900-04-012 l0 Page 6 of 10 Subject CV Tunnel & Top of Seal Chambers I & 2 Survey Design 3.6 SNEC Facility License Termination Plan.
3.7 SNEC Procedure E900-IMP-4500.59, "Final Site Survey Planning and DQA.
3.8 SNEC Facility Historical Site Assessment, Rev 0, March, 2000.
3.9 1994 Saxton Soil Remediation Project Report, GPU Nuclear Inc., May 11, 1995.
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.
3.13 SNEC Calculation No. E900-03-012, "Effective DCGL Worksheet Verification.
4.0 ASSUMPTIONS AND BASIC DATA 4.1 Remediation History The below grade CV Pipe Tunnel originally extended around the base of the CV approximately 270 degrees and connected to the old Radioactive Waste Disposal Facility (RWDF), Control and Auxiliary building the Saxton Steam Generating Station (SSGS)
Footprint buildings. The only remaining section still in tact extends from the SSGS footprint East approximately 36 feet toward the CV area. The remaining CV Tunnel section diagram is shown on Attachment 1-1.
Piping systems originally installed in the CV Tunnel, were removed from about 1972 to 1974. These early remediation efforts were not specifically documented. In the late 80's an isolation wall was erected at the far eastern end. Since the CV Tunnel collected seasonal rain and ground water seepage, this wag served to isolate water accumulation to only -a portion of the remaining structure.
In the spring of 1994, SNEC personnel entered the tunnel through a hole installed in the ceiling to complte characterization surveys for this structure. No evidence of abrasive remediation of the interior surface of the tunnel was noted. A thorough characterization survey was performed in late 1994. Areas indicating elevated activity were core bored to determine the depth of the contamination.
Most of the CV Tunnel has now been removed, leaving only about a 36' section remaining as shown on Attachment 2-1. In the summer of 2003, Shonka Research Associates (SRA) surveyed the remaining section of tunnel area using a large area GFPC detector array.
Remediation was then performed to reduce the residual volumetric concentration of Cs-137 and lower the general area exposure rate before a final round of FSS work.
The Seal Chambers are located in the Discharge Tunnel, but the tops are exposed in the SSGS footprint area. The tops of Seal Chamber 1 and 2 are not extensively contaminated, and in August of 2003 the concrete surfaces were cleared of sediment and debris in preparation for FSS work by SRA (see Attachment 2-2). After the initial survey work was performed, several small locations were identified that required further remediation. A final round of survey work was then planned.
4.2 The MARSSIM WRS Test will be applicable for this survey design.
C__ SNEC CALCULATION SHEET Calculation Number Revision Number Page Number E900-04-012 I0 Page 7 of 10 Subjed CV Tunnel & Top of Seal Chambers I & 2 Survey Design 4.3 Variability in these survey units includes both steel and concrete surface measurements.
However, steel surfaces represent only -10% of the surface area in only one (1) survey unit. The remainder of these survey units have little or no steel surface area present.
Therefore, true variability within these survey units is driven by one main material type (concrete). Yariability for these two (2) survey units is shown in Attachment 9-1 to 9-2.
4.4 Backgrounds for these survey units are taken from the Williamsburg background materials study (see Attachment 10-1).
4.5 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 3.5). VSP is used to plot random start systematically spaced sampling points. The coordinates of the survey points are provided for each survey unit referenced to an existing survey area landmark (key point measurement location). Because of edge effects and a desire to error on the conservative side, additional measurement points have been forced by increasing the -MARSSIM overage above the required 20%.
4.6 Reference 3.6 and 3.7 was used as guidance during the survey design development phase.
4.7 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 volumetric DCGLw is just the permitted Cs-1 37 concentration (6.6 pCi/g) lowered to compensate for the presence (or potential presence) of other SNEC related radionuclides. The surface DCGLw is a gross activity values that includes all relevant radionuclides. For both DCGLw values, an administrative limit has been set that further lowers the permissible Cs-1 37 concentration to an effective DCGLw for this radionuclide. The sample data base used to determine the effective radionyclide mix for the CV Tunnel and Seal Chambers has been drawn from samples that were assayed at off-site laboratories. This list is shown as Attachment 3-1 and 3-6. Review of the data points out that only three radionuclides have been positively identified (Co-60, Cs-137 & Sr-90). Inspection of the data also shows that Cs-137 is by far the predominant -radioactive contaminant found in this area (>99%). Both Sr-90 and Co-60 combined are < 1% of the mix.
Remediation has further impacted the radionuclide concentration levels in this area.
Remediation efforts have been shown to be effective in the CV Tunnel -and Seal Chamber areas. Therefore, the impact of remediation must be considered in determining the effective Cs-137 DCGLw surrogate value. The final sample listing was decayed to January 15, 2004.
4.8 No special area characteristics including any additional residual radioactivity (not previously noted during characterization) have been identified in this survey area.
4.9 The decision error for this survey design is 0.05 for the a value and 0.1 for the 13 value.
4.10 Special measurements including gamma-ray spectroscopy are not included in this survey design.
4.11 No additional sampling will be performed IAW this survey design beyond that described herein.
4.12 The applicable SNEC site radionuclides and their associated DCGLw values are listed on Exhibit 1 of this calculation.
SNEC CALCULATION SHEET Calculaton Number Revision Number Page Number E90-04-012 0 l Page 8 of A 1
Subject CV Tunnel & Top of Seal Chambers I & 2 Survey Design 4.13 The survey design checklist is listed in Exhibit 2.
4.14 Area factors for structural surfaces are shown below. These values are for Co-60 which is a constituent of the mix. However, Cs-137 and Co-60 area factors are very similar and therefore there is little impact from using the more conservative Co-60 values. The lower limit area factor;for areas less than 1 square meter is 10.1. Area factors for values between the values listed in the following table, are interpolated from the data by Compass.
AREA (m=) AREA FACTOR 1 10.1 4 3.4 9 2 16 1.5 25 1.2 36 1 5.0 CALCULATIONS 5.1 All calculations are performed internal to applicable computer codes or within an Excel spreadsheet.
6.0 APPENDICES 6.1 Attachment 1-1, is a diagram of the SNEC site area showing the CV Tunnel.
6.2 Attachmert 2 6.2.1 Attachment 2-1, is a diagram of the remaining CV Tunnel remnant.
6.2.2 Attachment 2-2, is a diagram of the top of Seal Chamber 1 & 2.
6.3 Attachment 3-1 to 3-6, is the final list of sample results decayed to January 15, 2004 and the fEffective DCGLw Calculator" spreadsheet file used to determine the effective Cs-137 concentration for the CV Tunnel and Seal Chamber 1 & 2 areas.
6.4 Attachment 4-1 to 4-9, are MicroShield models of surface and volumetric concentrations used to determine the MDCscan values for various scanning conditions in these survey units.
6.5 Attachment 5-1, is a listing of typical detection efficiencies for Nal and GFPC instrumentation at the SNEC site.
6.6 Attachment 6-1 to -8,are copies of inspection reports for these two survey areas.
6.7 Attachment 7-1, is a graph of efficiency loss results with increasing distance from a source of Cs-137 for the GFPC instrument.
6.8 Attachment 8-1 to 8-15, are the Compass output reports for these survey units.
6.9 Attachment 9-1 and 9-2, are the variability results for these two survey areas.
6.10 Attachment 10-1, is the Williamsburg background measurements of concrete materials made with the GFPC instrument.
6.11 Attachment 11-1 to 11-5, are fixed point measurement locations determined by the VSP computer code.
SNEC CALCULATION SHEET Calculation Number Revision Number Page Number E900-04-012 0 Page 9 of I' Subject CV Tunnel & Top of Seal Chambers I & 2 Survey Design Exhibit I SNEC Facility DCGL Values (a) 25 mremly Limit 4 mremly Goal 25 mrem/y Limit (All Pathways) (Drinking Water)
Radionuclide Surface Area Open Land Areas Open Land Areas (b)
(dpm/100cm 2 ) (Surface & Subsurface) (Surface & Subsurface)
(pCilg) (pCilg)
Am-241 2.7E+01 9.9 2.3 C-14 3.7E+06 2 5.4 Co-60 7.1 E+03 3.5 67 Cs-137 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 3.0E+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 mremty 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).
SNEC CALCULATION SHEET Calculation Number Revision Number Page Number E900-04-012 0 Page 10 of 10 Subject CV Tunnel & Top of Seal Chambers I & 2 Survey Design Exhibit 2 Survey Design Checklist Calculation No. Location Codes E900-04-012 SS22-1, SS22-2. SS22-3, SS17-2 and SS18-2 Status Reviewer iTEM REVIEW FOCUS (Circle One) Initials & Date Has a survey design calculation number been assigned and is a survey design summ ary r eQN/A description provided? N r1 2 Are drawings/diagrams adequate for the subject area (drawings should have compass YesN/A 6 /
_______headings)?
3 Are boundaries properly identified and is the survey area classification clearly indicated? Y IA 4 Has the survey area(s) been properly divided into survey units LAW EXHIBIT 10 (i)NIN/A 5 Are physical characteristics of the areallocation or system documented? es N/A l /10/ov 6 Is a remediation effectiveness discussion Induded? N/A C 7 Have characterization survey and/or sampling results been converted to units that are r NT/
comparable to applicable DCGL values? vi CN/A /a 8 Is survey and/or sampling data thatwas used for determining survey unit variance included? N/A -o o/o 9 Is a description of the background reference areas (or materials) and their survey and/or sampling results included along with a justification for their selection? NME__/____
10 Are applicable survey and/or sampling data that was used to determine variability included? es)N/A Agl 11I Will the condition of the survey area have an Impact on the survey design, and has the Yes, probable impact been considered in the design? __________
Has any special area characteristic induding any additional residual radioactivity (not 12 previously noted during characterization) been identified along with its impact on survey Yes N design? _ _ _ _ _ _
13 Are all necessary supporting calculations and/or site procedures referenced or included? N/A N/A ds 14 Has an effective DCGLw been identified for the survey unit(s)? Ye N/A 15 Was the appropriate DCGLEwc included in the survey design calculation? Yo NM )i/ho~w 16 Has the statistical tests that will be used to evaluate the data been identified? NIA/A 17 Has an elevated measurement comparison been performed (Class 1 Area)? Ye , N/ d 0//
18 Has the decision error levels been identified and are the necessary justifications provided? T 19 Has scan instrumentation been identified along with the assigned scanning methodology? _Yes) N/A 20 Has the scan rate been identified, and is the MDCscan adequate for the survey design? (SY3) N/A 6 21 Are special measurements e.g., in-situ gamma-ray spectroscopy required under this design, YesLN/D and is the survey methodology, and evaluation methods described? sA/I 4/i/
22 Is survey instrumentation calibration data included and are detection sensitivities adequate? V 23 Have the assigned sample and/or measurement locations been clearly identified on a diagram N/A,/
or CAD drawing of the survey area(s) along with their coordinates? N/Ay , 4LJ 24 Are investigation levels and administrative limits adequate, and are any associated actions 4 clearly Indicated? _g_
__ __AS 25 For sample analysis, have the required MDA values been determined.? Yes)9 N P 26 Has any special sampling methodology been identified other than provided in Reference 6.3? Yes,(9NM/,D lI. ___.__ L-____LsX_ _ __.:_@_^_L@eL_ __ ......................... J_
L
.:^1_)/I __
_4:
=_
NOTE: a copy of this completed ormn or equivalent, snal De included witnhin me survey design calculation. v
SUBSTATION aATE -.
-(REMOVED)
(REMOVED)
PENELEC CONTROL & LINE AUXILIARY SHACK Seaf Chambers I & 2 BUILDING
~'-SSGS tocFmiVr (REMOVED)
SSGS Footprint TRAILER FILLED DRUM STORAGE GATE AREA (REMOVED)
PAV\vJIA t F ATTACHMENT
- 3-
South Wall:
S ..
I.
. ' .1
. .. 7
. . ... I ..... 1 68.5" I
SS22-2 73"1 S . . .
V
. .. .. . a .1 East Wall (Metal Plate) Section of Tunnel May be Removed XI, i24"I Floor SS22-1 D Opening
- CV Tunnel Remnant
-- Opening Missing Roof Section 488" F I ,Il I
--- I Opening - 73" SS22-2 . . .
I . .
. 68.5" I. .
. . . I V
North Wall ATTACHMENT ai.
- TOP OF SEAL CHAMBER 1 & 2 North Wall SS17-2 SS17-2 SS18-2 West Wall I; H H \
Saddles
]I m\L B] ]w B] ]i B] ]
H H H A1TACHMENT 2- L..
DCGL Calculation Logic-CV Steam Tunnel/Seal Chamber Roof Survey Unit: SNEC Containment Vessel (CV) Steam Tunnel & Top of Seal Chamber I & 2 Roof
- 11.
Description:
The purpose of this calculation is to determine a representative isotopic mix for the CV Steam Tunnel and top of the Seal Chamber I & 2 roof from available sample analyses.
The effective surface area and 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 six (6) tables. These tables were developed using Microsoft Excel. Table explanation is as follows.
Table 1: Data Listing - This table, which has been extracted from a larger database, provides a list of the most representative sample analyses for the CV Steam Tunnel and top of the Seal Chamber 1 & 2 roof. These results are from scoping, characterization, and pre/post remediation surveys. The samples consist of various sediments, scrapings and concrete cores that were taken in support of the aforementioned surveys. As applicable, a sample number, sample location/description, radionuclide concentration, analysis date are provided for each sample. Positive nuclide concentrations are noted with yellow/shaded background fields while MDAs are noted in the gray shaded fields.
Table 2: Decayed Listing of Positive Nuclides & MDAs Removed -This table provides the best overall representation of data selected from Table 1. Half-life values (days) are listed above each respective nuclide column. Samples are decayed to the date noted above Table 1 (e.g. January 15, 2004). Positive results are denoted in a yellow background while the MDA values, which were listed in Table 1, have been stripped out.
Table 3: Mean Percent of Total for Positive Nuclides - This table provides the calculation methodology for determining the relative fractions of the total activity contributed by each radionuclide. From this information the mean, sigma, and mean % of total are calculated.
The mean % of total values is used to calculate the surface gross activity DCGLW per MARSSIM equation 4-4. See Table 5. Note that the Co-60 mean percent values were averaged using only samples 1 & 5. In addition, the mean percent calculated from sample 1 for Sr-90 was not averaged throughout the spreadsheet, since this sample was the only one where this respective nuclide was positive. This results in higher mean percent of total' values in the mix, which is conservative.
Table 4: Ratio to Cs-1 37 for Positive Nuclides -This table provides the calculation methodology for determining the surrogate rato to Cs-137 for each radionuclide. From this information the mean, sigma, and mean % of total are calculated. The mean % of total values is used to calculate the volumetric DCGLW per MARSSIM equation 1-14. See Table 6. Note that the Co-60 ratios were averaged using only samples 1 & 5. In addition, the ratio value calculated from sample I for Sr-90 was not averaged throughout the spreadsheet, since this sample was the only one where this respective nuclide was positive. This resMlts in higher *mean percent of total' values in the mix, which are conservative.
Note: From Tables 3 and 4 only the "mean % of total" values are used as Input to the 'Effective DCGL Calculation Spreadsheet" as illustrated in Tables 5 and 6.
Table 5: Effective DCGL Calculator for Cs-1 37 (dpml1 00 cmA2) - This table provides the surface gross activity DCGLW calculation results from data derived from Table 3.
1 ATTACHMENT E 3 I
Table 6: Effective DCGL Calculator for Cs-137 (in pCig) - This table provides the surrogate volumetric concentration for the Cs-137 DCGLW calculation results from data derived from Table 4.
IV. Summary - Since the CV Steam Tunnel is a concrete structure the release limit is primarily based on the surface area DCGLW. However, some CV Tunnel walls contain unistrut, which are treated as volumetric contamination. Therefore, a volumetric DCGLW is also determined.
The Seal Chamber 1 & 2 roof release limit will be based on the surface area DCGL, only.
Using the above data selection logic tables, the calculated gross activity DCGLW for surface area is 27,479 dpm/100 cm2 . The Cs-137 volumetric DCGLW is 6.32 pCilg. These values would be reduced by 25% as part of SNEC's requirement to apply an administrative limit as discussed in the License Termination Plan (LTP).
2 ATTACHMENT >3
- Z
TABLE I -Data LIstng (pC~g)
Decay Date J'anuary 15 2004
_ SEC N Sample No Location;Description H-3 Sr-90 Co4o Cs-137 Am-241 Pu-238 Pu-239 Pu-241 C-14 Ni-63 Eu-152 Analysis Date I CV-unnel CV7unnelSeliment Composte. OL1 < 9.4 9.67 1 26 1250 < 0.18 c0 55 <0.22 < 44.69 < 9.34 4.02 <0.13 February 14. 2001 2 SxSDtCS CVSteamTunnel Vac-Pac Debris < 0.808 < 0.0382 < 0.0251 926 < 0.0221 < 0.0348 <0.00279 c 2.6 <0.147 < 0322 c0H099 December 10 2003 3 SXSDi53.1AS22 153 CVSteel ShellScrapings- Exterior Below GradeCar <0.04 <00331 0177 < 0.0246 <00517 < 0.0231 < 3.99 October 112001 4 SXSC1552. 1'!. CVSeel Shell Scraprngs - Exterior Below Grade ar) < 0.04 < 0.0305 0 297 < 0.0113 < 0.0372 < 0.0131 < 2.36 October 11 2001 S SXSD744 SSGS liezzanine. East.Pipe SR-CCC4 < 123 Internats. < 0.18 226 39 6 < 0709 < 0.33 <0.33 < 50.8 < 37.9 < 82.6 < t46 March 21 2001
_ _. _. _TA LE 2 Decayed .,hing of Positive NucIldes & MDAs Removed (pC g _ _
_ T112 T112 T112 T1112 T1 2 TI2 T112 T112 l T112 T112 1T112 4485 27 10446.15 1925.23275 11019 5925 157861.05 320506875 8813847 75 52596 12092882.5 36561525 49674 SEC Sample
_ So Location'Description H-3 Sr-90 Co-40 Cs-137 Am-241 Pu.238 Pu.239 Pu-241 I C-14 ID-43 Eu-152 Total (pCilg) 1 CVTunnel CV7urnelSediment Composie, Ot1 901E+00 859E-01 1 17E+03 i 1178,89 2 SXSDlOS CV Steam Tunnel Vac-Pac Debris 9 24E+00 i 9,24 3 SXSD1 53115Z 1t33 CV SteelShetScrapings - ExteriorBelow Graceirar, 1.68E-01 _ 017 4 SXSC15'21'53 CV SteelSheilScrapings -Exterior Below GradeTar _ 2.82E-01 _ 0,28 S SXSD744 SSGS l'ezzanine. East.PipeInternals,SR-G004 _ 1 56E+00 3.71Ei01 3868 leiar 901E+00 8 59E-01 I2.95EiO2 .
304 55 r qR7 T . -.
. . 417 I.
SigmaI lean%of%Tta1 12.96% 1 0 28% 1 ;N o 1 i i i i i i i....
- p.. I.;nO KEY I Iy'ellow Shaded Background Positive Resut I I lIGray Shaded Background = MIDA 3
co/
TABLE 3 - Mean Percent of Total for Positive Nuclides SIJEC Sample No LocationDescription Sr-90 Co-60 Cs-137 Total 1 CVTunnel CVTunnei Sediment Compcsite. OLI 076% 007% 99.16% 100.00%
2 SXSD1 C CV Steam Tunnel. Vac-Pac Debris _ 100.00% 100 00%
3 SXSW31531.1322. 1533 CV Steel Shell Scrapings - Extericr Belovw Grade 7iar) 100.00% 100 00%
4 SXSD15 2. 1 53 CV Steel Shell Scrapings - Exterior Belcw Grade JIar __ 100.00% 100.00%
5 SXSD744 SSGS Mezzanine. East. Pipe Internals. SR-0004 4.03% 95.97% 100.00%
mean=* 7.64E-03 7.28E-04 9.98E-01 1.01 Sigma=* 0 004185775 .........
Mean % of Tota0-0.76% 0 07% 99.17% 100.00%
TABLE 4 - Ratio To Cs-I 37 for Positive Nuclides SHEC Sample No LocationlDescription Sr-90 Co-60 Cs-137 Total I CV Tunnel CV T unnel Sediment Composite. OL1 0.008 0.001 1.000 1 008 2 SXSD105 CV Steam unnel. Vac-Pac Debris 1.000 1.000 3 SXSD1531.132.2 1522 CV Steel Shell Scrapings - Exterior Below Grade Jar) 1.000 .000 4 SXSD1 552. 1553 CV Steel Shell Scrapings - Exterior Below Grade J7ar I 1.000 1.000 5 SXSD744 SSGS Mezzanine. East. Pipe Internals. SR-0004 ; 0 042 1 000 1.04 MeanI7 71 E-031 7.35E-04 1.OOE+00 1.01 Sigma=* i 0 OOE+00 :.
Mean % of ThtaOI 076% 0.07% 99 16% 100.00%
4 COZ
Table 5 Effective DCGL Calculator for Cs- 137 (dpml100 cmA2) l: 7Gross Activity MDCGLw 2 Actvt1 Adminlstratlve L0It l Gros's 27479 ldpm~lOO cmA21 20609 ldpm;100O cm^2 r25.0 mremty TEDE Limit l -, Cs137,Llmlt.¢I<.-:g. , l Cs.137 AdministratIve L Imit SAMPLE 11O(s)=ICV Tunnel I 27250 .dpml OD cm^A2 20438 ldpmlri00 cm^2 l SNEC ALU' 75%D Individual Sample Input Limits Allowed Beta dpmt1O0 Alpha dpm;100 Isotope (pCilg, uCI, etc.) .. of Total (dpm1iO0 cmA2) dpm110 cmA2 mremiVy TEDE cmA2 cmA2 i Arn.241 0.000l%s 27 0.00 0 00 0 00 Amn.241 C) 2 C-14 0.000%1 3,700,000 0.00 0.00 0.00 C.14 m 3 Co.60 7.28E.04 0 072%'s 7,100 19.88 0.07 19.88 Co.60 4 Cs.137 . 9.98E-01 99.168% 28,000 27250.22 24.33 27250.2 .- s ' s Cs.137 5 Eu.152 0 000%,o 13,000 0.00 0 00 0 00 itlX Eu.152 6 H.3 0 000% 120,000,000 0 00 0.00 llot Detectable 3 :,:'. : H.3 W 7 111-63 0 000%1O 1,800,000 0 00 0.00 llot Detectable ,- tii63 8 Pu.238 0 000%,O 30 0.00 0 00 T 0 00 Pu.238 9 Pu-239 0.000% 28 0.00 0 00 0 00 Pu.239 Ie 10 Pu-241 0.000%O 880 0 00 0 00 llot Detectable Pu-241 ii Sr.90 7.64E.03 0.759% 8,700 208.61 0 60 208 61 ::1 Sr.90 100000,; 27479 25.0 27479 0 Maximum Permissible dpml1D0 cm^2 5
Table 6 l SNEC AL- *ts. l 75% l TotalAetMty LimitOCGLw ... ,Adminlitrative LmKt.
Effective DCGL Calculator for Cs.137 (In pClIg) 1 6.38 lpCilg 1 4.78 1pCiIg SAMAPLE IIUMBER~s)-IVTne I
.32 Umit iClC13AdmintrativeLimit;l 4 .- 4, 15.82% 1 25.01 mremty TEDE Limit 1 6.32 IpCI/g 1 4.74 IpCI~q I 1.52%4 1"7~-': 4.I irLem 'v DtinkInn V IaterfDW) Limit P Ch~eck for 25 mremly Sample Input , . -uEi, (pC"O, uCI,'. 25 mrem.y TEDE7.4 mremrj MYitI Ar.Allo fpCI'g edpC Value Checked from This Sample Isotope of Totial. etc.) of Total Limits (pCIg) .LImitilPCIg)e 25 mrem:y TEDE jfor4rmrem DY1 Column A or B mrem'y TEDE 11mrem'iy DWOI Am-241 0 000% 9.9 2.3 0 00 O.
000 ., 0 00 O00 , f.0 00,. Am-241 C.14 0 000% 2.0 ' 5-r4
- 0000 .- 0 00 .Z 0 00 0 00 0 ro-. C-14 Co.60 0.0007 0 073% 3.5 5'-67.0 .5i 0 00 , 0 0S 0 0 00 0 01 0.0 00 tt Co.60 Cs.137 1.0000 99.163% 6.6 ' 397.: 6 32 @ '65.92 %, 6.32 3 79 1 Cs137 Eu-152 0 000%o 10.1 -1440. 0 00 , 0 00. ;- 0 00 0 00 ;AO00.0f Eu.152 H.3 0 000%; 132 31 000 000 0 00 0 00 , 0.00 .- H-3 C.-i 111-63 0 000%; 747 t:,A.19000`:.; 0 00 " 0 0o2~'2 000 0 00 0 11163
.0.
Pu-238 0 000% 1.8 0 0 00 *P 0 00 m Pu-239 0 000%,; 1.6 000 0 00 0 00 000
° ° Pu.238 Pu-239 Pu.241 0 000 86
- 198 - 0 00 , 000,- V* 0 00 0 00 0. 00 ;AO Pu-241 Sr.90 0.0077 0 765%,o 1.2 ; 061 000 i 061 00 05 0.16 f 0.05ia Sr.90 1.01E400 100.000",S 6.38 +
66.48 6.38 3.954_._ _ 0.061 Maximum Permissible Maximum To Use This Information, pCIlg Permissible pCI:g Sample Input Units Mvas Bo In 125mremtv)--
- 1.
(4 mremly) pCI/g not % of Total, L . _ _
6
mVicroom1IUI vu.IJu IU.%U-Du% I&. 'I GPU Nuclear Page :1 File Ref:
DOS File: SURFC.MS5 Date:
Run Date: June 24, 2004 By:
Run Time: 8:55:39 AM Checked:
Duration : 00:00:00 Case
Title:
Steel Surface
Description:
12" Diameter Model - FeO Geometry: 3 - Disk Source Dimensions Radius 15.24 cm 6.0 in Dose Points x Y z
- 1 7.72 cm 0 cm 0 cm 3.0 in 0.0 in 0.0 in Shields Shield Name Dimension Material Density Shield 1 .1 cm Iron Oxide 5.1 Air Gap Air 0.00122 Source Input Grouping Method: Actual Photon Energies Nuclide curies beoquerels uCi/cm 2 Ba/c~m2 Ba-137m 6.9026e-010 2.5540e+001 9.4600e-007 3.5002e-002 Cs-137 7.2966e-01 0 2.6997e+001 1.OOOOe-006 3.7000e-002 Buildup The material reference is : Air Gap Integration Parameters Radial 40 Circumferential 40 Results Energy Activity Fluence Rate Fluence Rate Exposure Rate Exposure Rate MeV photons/sec MeV/cm 2 /sec MeV/cm 2/sec mR/hr mR/hr No Buildup With Buildup No Buildup With Buildup 0.0318 5.287e-01 3.025e-07 1.444e-06 2.520e-09 1.203e-08 0.0322 9.755e-01 6.265e-07 3.026e-06 5.042e-09 2.435e-08 0.0364 3.550e-01 6.443e-07 3.392e-06 3.661e-09 1.927e-08 0.6616 2.298e+01 7.805e-03 8.209e-03 1.513e-05 1.591e-05 TOTALS: 2.484e+01 7.806e-03 8.217e-03 1.514e-05 1.597e-05 ATrACHMENT 9 - I
micronliewa va.uo j.uo-uu ic a, GPU Nuclear Page :1 File Ref:
DOS File: SURFC.MS5 Date:
Run Date: June 24, 2004 By:
Run Time: 8:49:11 AM' Checked:
Duration : 00:00:00 Case
Title:
Concretel Surface
Description:
12" Diameter Model - Paint Geometry: 3 - Disk Source Dimensions Radius 15.24 cm 6.0 in Dose Points x Y z
- 1 7.6708 cm 0cm 0 cm 3.0 in 0.0 in 0.0 in Shields Shield Name Dimension Material Densitv Shield 1 .051 cm Concrete 2.35 Air Gap Air 0.00122 Source Inpi Grouping Method: Actual Photon Energies Nuclide curies becquerels yCi/cm2 Bq/cm 2 Ba-137m 6.9026e-010 2.5540e+001 9.4600e-007 3.5002e-002 Cs-1 37 7.2966e-010 2.6997e+001 1.00OOe-006 3.7000e-002 Buildup The material reference is: Air Gap Integration Parameters Radial 40 Circumferential 40 Results Enerqy Activity Fluence Rate Fluence Rate Exposure Rate Exposure Rate MeV photons/sec MeV/cm 2 /sec MeV/cm 2 /sec mR/hr mR/hr No Buildup -With Buildup No Buildup With Buildup 0.0318 5.287e-01 7.676e-06 9.614e-06 6.394e-08 8.008e-08 0.0322 9.755e-01 1.441e-05 1.799e-05 1.159e-07 1.448e-07 0.0364 3.550e-01 6.203e-06 7.507e-06 3.524e-08 4.265e-08 0.6616 2.298e+01 8.203e-03
- 8.312e-03 I1.590e-05 1.61 1e-05 TOTALS: 2.484e+01 8.232e-03 8.347e-03 1.612e-05 1.638e-05 ATTACHMEET +/-. __?
Nal Scan MDC Calculation - Surface Nat Scan MDC Calculation - Surface Deposition b:= 100 p := 0.5 HSd := 30.48 SR:= 5 d := 1.38
. ... HSd Conv := 208.705 MS output 1.5911065 O*':=-
'* SR
° i = 6.096 ObservationInterval (seconds)
_ (b-O i) 60 MDCR i = (d-r) 0 MDCR i = 43.294 net counts per minute MDCR i MDCR surveyor = r IDCR surveyor = 61-228 net counts per minute MIDCR surveyor MDER:=
Conv MDER - 0.293 R/h MDC sMDER scnMS output l 103 MDC scan- 18439 PCi/CM2 MDC scan-2 2 2 = 4093.522 dpm/100 cm2 1624/2004 ATTACHMEN L2
- 3 4 of 5
Nal Scan MDC Calculation - Surface Nal Scan MDC Calculation - Surface Deposition b := 200 p := 0.5 HS d := 30.48 SR := 5 d := 1.38 Conv := 208.705 MS output :159110 5 0*--.-
SR
° i = 6.096 ObservationInterval (seconds)
(b-o ;)
60 MDCR := (dji). 60
~ i MDCR i = 61.228 net counts per minute DMDCR i surveyor := r UP; MDCR surveyor = 86.589 net counts per minute MDCR surveyor MDER:=
Conv MDER = 0.415 pL' R/h MDC MDER scnMS output l 103 MDC s = 26.077 - PCi/CM 2 MDC scan 2 2 22 = 5789.115 dpm/100 cm2 6/24/2004 4 of 5 ATTACHMENT. Y .q_
Nal Scan MDC Calculation - Surface where:
b = background in counts perminute bi = background counts in observationinterval Corn = Nalmanufacturers orcalibrationinformationreportedresponse to energy ofcontaminant(cpm/uR/h) d = index of sensitivity (Table 65 MARSSIM), 1.38 = 95% of correctdetection', 60%false positives HSd = hot spot diameter(in centimeters)
MD(;Cm = Minimum Detectable Concentrationfor scanning (pCi/cm2)
MDCR? = Minimum Detectable Count Rate (ncpm)
MDCRsv)yOr = MDCR1 correctedby human performancefactor(ncpm)
MDER = Minimum Detectable Exposure Rate (uRlh)
MSO, = MicroShieldoutput exposure ratefor) pCi/cm2 of contaminant(mR/P)
Oj = obervation Interval (seconds) p = humanperformancefactor SR = scan rate in centimetersper second 24r2A4 AT HMEN. 5af 5
microznmiewa voxo t;o.u-u i1 i GPU Nuclear Page :1 File Ref:
DOS File: SLABD.MS5 . Date:
Run Date: June 24, 2004 By:
Run Time: 9:09:00 AM Checked:
Duration : 00:00:02 Case
Title:
Concrete Slab
Description:
12" Diameter by I" Deep - Cs-1 37 @ I pCilg Geometry: 8 - Cylinder Volume - End Shields Y
I I Source Dimensions Height 2.54 cm 1.0 in Radius 15.24 cm 6.0 in Dose Points X Y z
- 1 0 crT1 10.16 cm 0 cm 0.0 ir1 4.0 in 0.0 in Shields Shield Name Dimension Material Density Source 1853.333 cm3 Concrete 2.35 Air Gap Air 0.00122 Source Input Grouping Method: Actual Photon Energies Nuclide curies becquerels uCi/cm3 Bqlcrn 3 Ba-137m 4.1201e-009 1.5245e+002 2.2231e-006 8.2255e-002 Cs-1 37 4.3553e-009 1.6115e+002 2.3500e-006 8.6950e-002 Buildup The material reference is : Source Integration Parameters Radial 60 Circumferential 60 Y Direction (axial) 60 Results Energy Activity Fluence Rate Fluence Rate Exposure Rate Exposure Rate MeV photonstsec MeV/cm 2/sec MeV/cm2/sec mRlhr mR/hr No Buildup With Buildup No Buildup With Buildup 0.0318 3.156e+00 6.355e-06 7.682e-06 5.293e-08 6.399e-08 0.0322 5.823e+00 1.222e-05 1.486e-05 9.832e-08 1.196e-07 0.0364 2.119e+00 6.726e-06 8.749e-06 3.821 e-08 4.971e-08 0.6616 1.372e+02 3.200e-02 *- 4.053e-02 6.204e-05 7.858e-05 TOTALS: 1.483e+02 3.203e-02 4.057e-02 6.223e-05 7.881e-05 ATTACHMEN
Nal Scan MDC Calculaton - Concrete3.mcd Nal Scan MDC Calculation - Concrete Volume b:=100 p:=0.5 HSd:=30.48 SR:=5 d:=1.38 Conv := 208.705 MS o
. .output t:=. 7.858 10 5 .
HS d
_- = 6.096 ObservationInterval (seconds)
SR HSd ObservationInterval (seconds)
_ (b-o ;) '* SR 60 MDCRi := (d- ).6 i
MDCR i = 43.294 net counts per minute MDCR i MDCR =
-eyor suvyo- P-MDCR surveyor = 61.228 net counts per minute MDCR surveyor MDER:=
Conv MDER = 0.293 jtR/h MDC SMDER MS output l 1t 0 MDC -- 3 37 ; pCilg 6/24r2004 4 of 5 ATTACHMENT
Nal Scan MDC Calculation - Concrete3.mcd Nal Scan MDC Calculation - Concrete Volume b := 200 p := 0.5 HS d := 30.4 8 SR:= 5 d := 1.38 Conv := 208.705 MS output :=7.858 HS d
- = 6.096 ObservationInterval (seconds)
SR HS d 1
ObservationInterval (seconds)
(b-O i) SR 60 MDCRi:= (d-$i). 60 MDCR i = 61.228 net counts per minute MDCR MlCR surveyor :=
MDCR surveyor 86.589 net counts per minute MDCR surveyor MDER:=
Cony MDER = 0.415 gRl/h MDER MDC scan:=
MS output' 10 MDC can = 5.. 8 pCilg W4QW4 4 of 5 ATTACHMENT EY1- 8
Nal Scan MDC Calculation - Concrete3.mcd where:
b = background in counts per minute bi background counts in observationinterval Con =Nal manufacturersreportedresponseto energy of contaminant(cpm/uR/h) d = index ofsensitivity (Table 6.5MARSSIM), 1.38 = 95% ofcorrect detection's, 60%false positives HSd = hot spot diameter (in centimeters)
MDCsc,. = Minimum Detectable Concentrationforscanning (pCi/g)
MDCR) = Minimum Detectable Count Rate (ncpm)
MDCR,e.,,r = MDCRJ correctedby humanperformancefactor(ncpm)
MDER = Minimum Detectable ExposureRate (uR/h)
MS ,up, = MicroShield output exposure ratefor I pCi/g ofcontaminant (mRPh)
Oj = obervationInterval (seconds) p = human performancefactor SR = scan rate in centimeters per second
,624/2004 5 of 5 ATTACHMEN Y-1 9
Ii
--- ___ , . __ - - - - - - 04 12350 INSTRUMENT AND PROBE EFFICIENCY CHART 6/1/04 TYPICAL GFPC EFFICIENCY FACTORS INST 43-68 PROBE 44-1 0 PROBE BETA ALPHA INST # C/D PROBE C/D PROBE C/D EFF EFF 126179 1/27/05 094819 1/27/05 _25.1% N/A 126188 1/27/05 099186 1/27/05 _28.2% N/A 126218 01/08/05 095080 01/09/05 27.9% N/A
. 7Y PICAL 2" 2"MAI E ICIECY MFCT7__
Inst.# Cal Due AP # Probe # Cal Due cpm/mRlh 98625 .5/18/05 R&Y 211680 Pk 5/18/05 214,882 98647 5/18/05 G &Y 211667 Pk 5/18/05 218,807 129423 5/18/05 P &Y 211687 Pk 5/18/05 213,539 117573 5/18/05 O &Y 211674 Pk 5/18/05 212,173 117566 4/9/05 G&R 185852 Pk 4/13/05 209,862 129429 11/3/04 W&Y -206283 Pk 10/31/04 177185 126183 11/19/04 R&B 206280 Pk 12/12/04 190,907 126198 11/03/04 R&W 196021 Pk 5/25/05 209,194
.'__ _ _ _ ._ , '-I el
[ Different Insrumentl/Probe Cal. Due l Ccsium only instrumcnis ImV to 100)
ATTACHMENT__5* I
ORMA}k0i Q~
Exhibit I SurveyInit inspection Check Sheet ORIGI!tA
-: - SCTION 1!-.8 RVEY: UN.1 8ECTOTiSR 1oN
,.- .*- . - .;-.- ECTION2-SURVEY:UNITNSPECTZONSCO _ _
Inspection Requirements (Check the appropriate Yes/No answer.) Yes No NIA
- 1. Have suff'cient surveys (i.e.. post retrediution. characterization. etc.) been obtained for (he survey unit7 X
- 2. Do the surveys (tram Question 1) demonstrate that the survey unit wil most hkely pass the FSS7 X
- 3. Is the physICal work (i.e.. remaedation & hou ospko&,ng) in cr around the suvey unit complete7 4 Have all tools. non-permanent equIpment. and material not needed to perform the FSS been removed7
- 5. Are the eurvey surfaces reiatively free of loose debris (i.e.. dirt. concrete dust, metal Clings. etc.)?
- 6. Are the survey surfaces relatively free of liquids (i.e.. water. moisture, oil. etc.)7
- 7. Ara the survey surfaces free of alt paint, which has the potential to shield radiation?
r, Iliava the Surhace tMossurement Tes¶ Areas (SMTA) been established? (Refer to Exhlbit 2 for rnsaructlons .)
- 0. Have the Surface Measurement Test Areas (SMTA) data been collected (Refer to Exhibit 2 for Instructions.)
tO. Are the survey surfaces easily accessible? (No scaffolding. high reach. etc. Is needed to perform the FSS)
- 11. Is lighting adequate to perform the FSS7
- 12. Is the eres Industrially safe to pe 4orm the FSS7 (Evaluate potential fall & trip hazards. confined spaces. etc.)
- 13. Have photograph been taken showing the overail condiion or the area7
- 14. Have sit unsalmlactory condlions been resolved)
NOTE: if a 'No' answer is obtained above. the Inspector should immediately cornect the problem or Initiate correcUve actlons through the responsibl ste depanmant. as epplicable. Document adcon talken and/orjusalnicstions n the 'Comments' section below. Attach additional sheets as necassary.
Comments:
Response to Question 4 - The wooden stairway needs to be removed prior to FSS.
Response to Question S - Freestanding water has been identified to be present In three areas: west side -on cover to 2 dowtncomer. east end - core bore i scabbled areas (2).
Response to question #t - The floor has to be swept prior to survey. (loose stones and sediment present).
Response to Question #12 - Lead-containing paint has been Identified on the walls. The paint is not loose but the technicians performing FSS must not disturb surface to the best of their ability.
Additionally, the downcomer to #2 Seal Chamber is covered with plywood that must be removed when perforfning scan surveys. This will expose the individual to a potential fall hazard.
Survey Unit Inspector (piint/sign) I David Sarge I Date 6128104 Survey Designer (printlsign) Date ATTACHMENTENf4._ l_
to 9v tlQoava AI5IIIOV DoaS LIEZGEr13S 917:SQ0 POOZ/BZ/90
W-ORMATIONI Surf sce Meawruemnt Test Arco (CMTA) Dutu Shieet
-,. SECTION 1 O ES-CRIPT6 ... .. . . ...
SMTA Number SMTA-SS17-2-1 Survey Unit Number 1 SS17-2 SMTA Location Top of Seal Chambers 1 and 2 (Wall Area)
Survey Unit Inspector D. Sarge l Date 415104 Time 1200
- .. - . 'ECTION 2 -CALIPER INFORMATIONA&PERSONNELtVO LVD . .DK.
Caliper Manufacturer Mitotoyo Caliper Model Number CD-6'CS Caliper Serial Number 7_3893 Calibration Due Date (as applicable) N/A Rad Con Tecthnician I D. Sarge Date 4/15/04 Time l1200 Survey Unit Inspector Approval D. Sa~re I _FDate 4115104
- . :.: . SECTlON3,.
.-.. ES UREMENT LTSUT .::
SMTA Gnid Map & Measurement Results in Units ot mm (Insert Results in White Blocks Below) Comments
.;. i:7. . 13i,; 19: " :7 I4 0.78 0.62 4.1 0.73 0.37 2 14 2 -:2 1.94 1.25 2.46 0.67 1.05 0.4
r ,r S 2. .. -33 . ,.,
0.08 1.06 0.78 2.32 0.18 0O25 019 063 0.e 236 01C 011 6; -1$:; :17-.. :s23 .. ' 5:.
0.4 o 45 o.: o I 02o6 O 00M Aver 05 Messr 0 -63084 089 Average Measurement - 0 84mm Additional Measurements Required ATTA CHIA ENT--/,---Z,--
NQooavd Ali-lIOV Oa-is LLI.5t'8 IEzSEs tV18 9V:60 POOVez/90
NFfWMATEi !C;-
ORIG lit LEXHIBIT3 Surface Measurement Test Area (SMTA) Daa Sheet
...SECTION I- DESCIAIPTIjON . -
SMTA Number SMTA-SS1B-2-1 lSurvey Unit Number SS18-2 SMTA Location Top of Seal Chambers 1 and 2 (Floor)
Survey Unit Inspector D. Sarge / Date 4(15104 Time 1100
. .:.SECTiON 2 -CALIPER NAiFORMATiON jERtSONNEL INVOLVED .
Caliper Manufacturer Mitotoyo Caliper Model Number CD-6 CS Caliper Serial Number 763893 Calibration Due Date (ais applicable) NIA Rad Con Technician lI. Sare _ Date 4/15104 Time 1100 Survey Unit Inspector Approval D. Sare l Date 4/15104 N;'*:_'--
.< . *. :l
- ONi. UEAtURVENT RESULfS ; ;.- ;--
SMTA Grid Map & Measurement Results in Units of mm Comments (Insert Results In White Blocks Below)
.1 ....7 . 13..¢ .
13..
~~221- .
_ ".. ..31 .. ..
0.24 O0 027 1.13 022 0.37 i" . 8 ": 514 20; ?: 2-2:2' 0.09 0.3 0.06 1.86 0.76 0.12 0.19 0.3 00.6 0.27 0.15 0.02
_1 U
. 10 5. .... .. .f . ..4 0.31 0.63 0.0O 034 0.17 0o5 1,39 ,64 C.5 0.07 099 056 6 r12 11 l,
- 30 i24 36 I 004 0.15 011 ciS 043 034 Average Measurement - 0.37mm Additional Measurements Required ATTACHMENT- k.(P
- 3 a1 39MV NODGV8 AIIIIDVJ 03NS L TEZ5E9P18T 1~99?'18Z'2Z/SZ/90 L9P':60
WRO RMAEl 9 E5 P41 VJ.
ORIGINALHBIT 3 Surface Measurement Tebt Arec (SMTA) Data Sheet
.. .;'. 8ECTION1 -'DESCRIPTION.
SMTA Number SMTA-SS18-2-2 Survey UnK Number l SS18-2 SMTA Location Top of Seal Chamber 1 Tank Cradle (East Side)
Suivey Unit Inspector D. Sarve I Date l 128/04 Time 1000 r'.. . . * .-: -SECTiON 2 - PER RAT1ON&PRONNEL INVOLVED ; . ...
Caliper Manufacturer NIA Caliper Model Number Caliper Serial Number Calibration Due Date (as applicable)
Red Con Technician ID. Sarme I l Date 6/28/04 Time l 1000 Survey UnIt Inspector Approval D. Sarge t l Date 6/25/04
. . . .... C. .1..... MEASURE ENT-'RESU.. .
SMTA Gnd Map & Measurement Rcsutts In Units of mm Comments (insert Results in White Blocks Below) 3 1
- Depth measurements were obtained using a tape measure and detector holder to simulate
. 1i14 20 ;2 actual measurement distance.
. Ten measurements obtained of the destiucted
- edge of the cradle, ranged from 0.5 to 1.75 5 .. inches.
____a . The average for the readings was 1.0 inches.
34 L1, .l I.
7% Avcrage Measurerment - mm Additional Measurements Required S565 OIL SThoAG 1TA IK R Et1cv~D Secr,0ot V
ATTACHMENT46-4 TO 39Vcd N03GV6 AII113VJ 03NS 109~dNcjtadAI1Wd EO:TT P0GZ/8Z/90 3NSL1EZSFE9?18
II S r1. Ir Ill..
Exhibtt I Survey Unit Inalpeeloli Check Shoet a i,-1
.. . ., ; SECTON -URE R...TIN'-TION:DaCR.PTION Suey l 221,2,3,5 Survey Uni Location CV Steam Pipe Tunnel - floors, walls, ceiling. and SuvyUI S21.., SuvyUi oaIo uni-strut Date 4/27/04 Timc 0900 Inspocuion Team Members lD Sarge
-:: .- .4 Y , -SECTION 2-8URVEY UJTNPCI .SCOP . sv Inspection Requirements (Check the appropriate Yes/No answer.) Yes NoN
- 1. Have sufficient surveyr (I.e.. post remediation. characterization. etc.) been obtained lor the survey unmt? X 2 Do the surveys (from Question 1) demonstrate that the survey unit will most likely pass the FSS7 X
- 3. Is the physical wor'K (i.e.. remedLation & housekeeping) in or around the survey unit completel X
- 4. Have al tools. non-permanent equipment, and material not needed to perform the FSS been removed? X
- 5. Are the strvey surfvces relatively free of loose debris (i e.. dirt. concrete dust, moeal flings, 4tc.)7 X 6 Are the survey surfaces relatively free of liquids (I.e.. water. moisture, oil. etc.)? X
- 7. Are the survey surfaces free of all paint which hau the potontlal to shil2d radiatlion7 X
- 8. Have the Surface Measurement Test Areas (SMTA) been ectablmshed7 (Refer to Exhlbit 2 for instructions ) X 9 Have the Surface Meaurrement Test Areas (SMTA) data been collected? (Refer to Exhibit 2 for instructions.) X
- 10. Are the survey surfaces easily accessible? (No scatfolding, high reach. etc. is needed to perform the FSS) X
- 11. ls 11gfMng adequate to perform the FSS? X
- 12. to the area Irductrl~sly safe to perform the FSS7 (Evaluate potential fall & trip hazards. confined spaces, etc) X
- 13. Have photographs been taken ahowing the overall condition of the ares7 X
- 14. Have all unsatisfactory condtions bean resolved? X NOTE: If a No answer is obtained ebove, the Inspector should immediately correct the problem or initiate corrective actions through the responsible site department, as applicable. Document actions taken and/or justifications In the 'Comments section below. Attach additional heiit&as necessary.
Comments:
hsaL%,IggM¢s Pfjop r: &Crol' "/,FE "
Survey Unit Inspector (print/sign) I David Sarge / Date I 4127/04 Survey Designer (print/sign) I . S&Id I
/ /tr F 2i B Bsq Date 612V/
ATTACHMENT.
Zt.0 39)d NO3Gd AI1IOIDJ D3NS LtEZSE9P18 9b0:60 POOZ/8Z/9ia
INUPfAM0 -: -
SuvyUnkt Inspection Check She*RGIA 7ONvE~u. i-ISPECIO ESCRIPTION Survey Unit # SS22-1. 2. 3 , 5 Survey Unit Location CV Steam Pipe Tunnel - floor, walls, and ceiling Date l 48/04 Timel 1100 Inspection Team Members D.Sarge, G. Houtz, B. Stoner, G. Woomer,
.:. ... I IM. McConahy SECTION2 i SURVE iUN IN PECTIONl.SOPE . -_..
Inspection Requirements (Check the appropriate YestNo answer.) Yes Nol NA I Have su"flient Surveys (1e., post remediation, chsracterizetion. etc ) been obtained for the Ourvey unit? X
- 2. othe surveys (fron Question 1)demonntrate that the survey unt wil most llkely pais the FSS7 X
- 3. Is thn physical work (i.e., ramrediation & housekeeping) in or around Ine survey unit cornplete7 4 Have aetocti. non-permnnent equipment, and mateoral not needed to perform the FSS been removed?
- 5. Are Ihe eurvey surfaces relatively tree of loose debris (Ie., dirt, concrete dust, metal filmngs, etc.)7
- 6. Are the survey surfaces relatively lree of liqulds (i.e., Wtaer, molsture, oU etc.)?
- 7. Are the survey surfaces free of an paint, which has the potential to shield radiation?
8 Have the Surface Meusurement Test Areas (SWTA) beon ostablished? (Refer to Exhibit 2 for Instructions )
- 9. Have the 6urface Measurement Test Areas (SMTA) date been coilected7 (Refer to Exhibit 2 for Instiuctions.)
- 10. Are the curvey rurfacoc eatily accessible? (No ecaffolding, high reach. etc. Is needed to perform the FSS) 1t. Is 9gthting adaquata to perform the FSS7 t2. l1the area Industrlally safe to prform the FSS7 (Evaluate potentIl fall 1 tnp hazards. confined spaces, etc.)
13 Have phodographs bn takan showing the overall conditlon oftti2 aIaa 14F Have all unsetisladory conditions been resolved7 NOTE: if a No' answer is obtained above, the Inspector should immediately correct the problem or initiate cortective actions through (he responsible site department, as appicable Occument actions taken and/cr lust-ficutiono in the Comment3 section below. Attach additional sheets as necwsary.
Commonts:
Response to Question #3 - Vacuuming is required prior to FSS. (especially in troughs and core boreholes).
Response to Question #4 - Items to be removed - 2 scabble guns, air hose, and misc. equipment/liquids.
Response to Question #5 - Standing water located in troughs (west end).
Response to Question #7 - Spray paint used on walls to mark survey grids.
Response to Question #10 - Some areas of ceiling and walls (West end) are inaccessible due to temporary ceiling supports and (East end) are inaccessible due to steel wall comp~opqnts.
Survey Unit Inspector (print/sign) I G. Houtz l Date 'l/I/D Survey Designer (printisign) I D. SaDte ae 612 ATTACH MENT G( 6 11 Ncoaad AlEIvd AiI1ID D s LIEZGESTIB 9V :6Q roaZ/8z/90 I
2Ei NAL l. I EXHI.IT 3 Surface Measurement Test Area (SMTA) Data Sheet SECTION 1 - DESCRIPTION SMTA Number SMTA-SS-22-1 Survey Unit Number SS22-1 SMTA Location CV Steam Pipe Tunnel Survey Unit Inspector G. Houtz Date 4/8/04 Time 1120 SECTION 2 - CALIPER INFORMATION & PERSONNEL INVOLVED Caliper Manufacturer Mitotoyo Caliper Model Number CD-6'CS Caliper Serial Number 763893 Calibration Due Date (as applicable) N/A Rad Con Technician G. Houtz Date 4/8/04 Time 1120 Survey Unit Inspector Approval I G. Houtz / Date 1120 SECTION - SUREMENT RESULTS SMTA Grid Map & Measurement Results in Units of mm Comments (Insert Results in White Blocks Below) 1 7 13 19 25 31
- Entire floor has been scabbled (1 depth) 0.21 1.44 2.97 2.28 1.05 2.5
- East end has steel plate installed with bracing 2 8 14 20 26 32 anchored into floor. Brace obstructs floor access 1.58 1.0 1.44 1.09 0.95 1.35 (5' length x 8 ' width). Plate installed within the
. . . . . .35 plane of the floor, therefore obstructs survey.
3 9 15 21 27 33 2.3 1.42 1.03 1.47 1.25 1.32
- Troughs scabbled into floor at wall seams 4 10 16 22 28 require special survey considerations 2.94 4.82 1.18 2.31 1.48 1.32 5 11 17 23 29
- Core bore holes pose same survey considerations 1.99 9.11 1.91 1.62 0.44 1.94 6 12 s8 24 30 36
- Drain trench has been chiseled/scabbled into a 0.74 1.71 1.4 1.37 2.63 1.46 'V' shaped configuration. Poses same survey
-- -considerations Average Measurement - 1.86 mm Additional Measurements Required
. 3 (three) 6" core boreholes spaced evenly along length of floor. Depths between 1'-4" to 2'-6".
. 1 (one) trough along South wall. 8' wide x 24'-2' length. Depth between 1.5 to 2".
- 1 (one) trough along North wall (west end). 5" wide x 7'-2". Depth between 1-1.5".
. 1 (one) trough along North wall (east end). 4' wide x 12' length. Depth between 1-1.5".
- Drain trenching (west end). 10" wide x 5'-6" length x 8" depth and 10" wide x 4' length x 8" depth.
- 4 (four) 3' core boreholes. 3" depth.
ATTACHMENr 6r
EXHIBIT3 Surface Measurement Test Area (SMTA) Data Sheet IWG o 4 AYL SECTION 1 - DESCRIPTION SMTA Number SMTA-SS-22-2 and 3 Survey Unit Number SS22-2 and 3 SMTA Location CV Steam Pipe Tunnel (Walls and Ceiling)
Survey Unit Inspector G. Houtz Datel 4/8/04 Time I 1100 SECTION 2 - CALIPER INFORMATION & PERSONNEL INVOLVED Caliper Manufacturer Mitotoyo Caliper Model Number CD-6-CS Caliper Serial Number 763893 Calibration Due ate (as applicable) N/A Rad Con Technician G. Houtz Date 4/8/04 Time 1120 Survey Unit Inspector Approval I G. Houtz I Date 1100 SECTION -E A5-4 RESULTS SMTA Grid Map & Measurement Results in Units of mm Comments (Insert Results in White Blocks Below) 1 7 13 19 25 31
- Wall surfaces are smooth except for areas o o 0 0 0 0 disturbed by scabbling, core boring, and the removal of uni-strut.
2 8 14 20 26 32
- East end has steel plate installed with bracing o o I 0 0 anchored into floor. Plate installed within the 3 9 15 21 27 33 plane of the walls, therefore obstructs survey.
o 0 0 0 0 0
- Some wall areas are not accessible currently.
4 10 16 22 28 34 Steel plate blocks access.
o o 0 0 0 0 . Uni-strut at far west end has concrete filler in 5 11 17 23 29 25 three locations. Length is 3, depths between 1.5 to 2". Total length of uni-strut in tunnel is o o 0 0 0 0 70'-6'. Uni-strut depth is 2".
6 12 18 la 24 30 36
- Ceiling surfaces are smooth except for form o o 0 0 0 0 separation crack roughly mid-point of tunnel
-- length. Depth is 0.5'.
Average Measurement - 1.86 mm Additional Measurements Required NORTH WALL
. 7 (seven) vertically installed uni-struts 1' length spaced 6' on center along ceiling line.
. 7 (seven) vertically installed uni-struts 1' length spaced 6' on center along floor line.
- 2 (two) 3' core boreholes. Depth is 2'.
- 1 (one) steel plate installed at east end. Poses special survey considerations.
SOUTH WALL
. 7 (seven) vertically installed uni-struts 5' length spaced 6' on center (top at ceiling line).
. 1 (one) trough 7' length x 8' high x 3' depth (middle of wall at floor line).
. 1 (one) trough 4' length x 16' high x 3" depth (west end at floor line).
a 1 (one) trough 16' length x 10' high x 2' depth (west end at floor line).
- 1 (one) chiseled hole 30' high x 1' wide (far west end at uni-strut removal location)
CEILING
- Form separation crack located mid-point. Depth is 0.5'
. 5 (five) north-south oriented Uni-struts 4' length spaced 6' on center.
.ATACHMErTfE R r
- 3. 3Ux 11M UI Cs-1 37 Efficiency Loss with Distance From Source 1.0 Data: Datal_Loss
- -1 Model: ExpDecayl ChiA2 = 0.0001 8 so 0.8 yO 0.03536 +/-0.02118 0
x0 0 +/-O Cu3 Al 1.00693 +/-0.01 809
\\o I')a LL ti 1.61706 +/-0.07558
>11 0.6 C.
w 0.4 0.2 I . *.
=iŽ A Fit = yO+A1eA((4xxO)t1 )
; --- K-2n 4
I I 1 0.0 0.5 1.0 1 .5 2.0 2.5 3.0 Inches from 150 cm2 Source ATTACHMENTS.~ - I
Site Report Site Summary Site Name: CV TUNNEL & SEAL CHAMBERS 1 & 2 Planner(s): BHB Contaminant Summary NOTE: Surface soil DCGLw units are pCVg.
Building surface DCGLw units are dprn/100 cm2.
Screening Contaminant Type DCGLw Value Used? Area (m') Area Factor Gross Activity Building Surface 20,609 No 36 1 25 1.2 16 1.5 9 2 4 3.4 1 10.1 0 Z 1° 10.1 COMPASS v1.O.0 612812004 Page 1 ATTACHMENT f . l
i Building Surface Survey Plan Survey Plan Summary Site: CV TUNNEL & SEAL CHAMBERS 1 & 2 Planner(s): BHB Survey Unit Name: CV PIPE TUNNEL FLOOR Comments: SS22-1 Area (m2 ): 21 Classification: I Selected Test: WRS Estimated Sigma (cpm): 51.3 DCGL (cpm): 2,077 Sample Size (N/2): 8 LBGR (cpm): 1,925 Estimated Conc. (cpm): 22 Alpha: 0.050 Estimated Power: 1.00 Beta: 0.100 EMC Sample Size (N): 8 Prospective Pov ver Curve
_ 1 W.
" 0.9 P.
z 0.8 C
- 0.7 t 0.6
- 0.5
- --0.4 il d02 5-E 0.1 0
0 500 1000 lSOC 2000 2500 Net Beta (cpm)
- Power - DCGL - - Estimated Power
- LBGR
- 1-beta COMPASS v1.0.0 612812004 Page I ATTA CHEAN M
Building Surface Survey Plan Contaminant Summary DCGLw Contaminant (dpm/100 cm')
Gross Activity 20,609 Beta Instrumentation Summary Gross Beta DCGLw (dpml100 cm2): 20,609 Total Efficiency: 0.08 Gross Beta DCGLw (cpm): 2,077 ID Type Made Area (cm2) 22 GFPC Beta 126 Contaminant Energy' Fraction2 Inst Eff. Surf. Eff. Total Eff.
Gross Activity 187.87 1.0000 0.48 0.16 0.0776
'Average beta energy (keV) [NIA indicates alpha emission]
2Activity fraction Gross Survey Unit Mean (cpm): 328 +/- 51 (1-sigma)
Count Time (min): 1 Number of Average Standard MDC Material BKG Counts (cpm) Deviation (cpm) (dpml100 cm')
Concrete 31 306 34.5 837 COMPASS v1.0.0 6128/2004 Page 2 A7TACHi MENTT 3
LU E dCE Elevated Measurement Comparison (IEMC) for Beta Followthe order of each tab belowto perform the EMC.
1)Enter Scanning Instrument Efficiencie] 2)Enter Scan MDC Parameters I 3) View EMC Results Scan MDC Required per Contaminant Contaminant DCGLw I Area Factor I Scan MDC Required* I Gross Activity 20.609 6.53 134.577 Statistical Design Hot Spot Design N/2: l 8 Actual Scan MDC?' l 1.653 Bounded Area (mi: l 2.6 Area Factor I N/A Area Factor: l 6.53 Bounded Area (m2: I N/A DCGLw*: l 20,609 Post7EMC N/2: l 8 Scan MDC Required*: l 134,577 I.. x
- dpm/1 00 crn2 No additional samples are required because the actual scan MDC isless than the DCGLw for each contaminant W Enable Trainini 1II3
.13.0
.ATTACHMENT 6
'.3 Building Surface Survey Plan Survey Plan Summary Site: CV TUNNEL & SEAL CHAMBERS I & 2 Planner(s): BHB Survey Unit Name: CV PIPE TUNNEL WALLS Comments: SS22-2 Area (m2 ): 48 Classification: 1 Selected Test: WRS Estimated Sigma (cpm): 51.3 DCGL (cpm): 2,077 Sample Size (N/2): 8 LBGR (cpm): 1,925 Estimated Conc. (cpm): 22 Alpha: 0.050 Estimated Power 1.00 Beta: 0.100 EMC Sample Size (N): 8 Prospective Power Curve
- o1 W. 0.8 t 0.8 E II
-U 0.7 0
to t 0.6 V*0 1s 3EI
- _-0.4
- @ I e:, 0.2 J I E 0.1
,:L 0.1 I
Ii I 0 soo 1000 1S50 2000 2500 Net Bcta (cpm)
- Power - DCGL -- Estimated Power
- LBGR
- 1-beta COMPASS v1.0.0 AE28N 2004 . Page 1 A7IACHMENT Z
- Building Surface Survey Plan Contaminant Summary DCGLw Contaminant (dpm/100 cm')
Gross Activity 20,609 Beta Instrumentation Summary Gross Beta DCGLw (dpml1 00 cm 2): 20,609 Total Efficiency: 0.08 Gross Beta DCGLw (cpm): 2.077 2
ID Type Mode Area (cm )
22 GFPC Beta 126 Contaminant Energy' Fraction2 Inst Eff. Surf. Eff. Total Eff.
Gross Activity 187.87 1.0000 0.48 0.16 0.0776 1
Average beta energy (keV) [NJA indicates alpha emission)
Activity fraction Gross Survey Unit Mean (cpm): 328+/- 51 (1-sigma)
Count Time (min): 1 Number of Average Standard MDC Material BKG Counts (cpm) Deviation (cpm) (dpm/100 cm2)
Concrete 31 306 34.5 837 Page 2 COMPASS vl.0.0 COMPASS v1.0.0 612812004 Page 2 A7A~qMENAG-. f 1
hi I! ,.k. M.f I M& Ii.. , .. *4*..- 1 Aie" 9'
- , l ,
t ;'.
x
~~* ~?~~~4f 1/4 .... .
Elevated Measurement Comparison (EMC) for Beta Followthe order of each tab belowto perform the EMC.
1)Enter Scanning Instrument Efficiencie{ 2)Enter Scan MDC Parameters I 3) View EMC Results Scan MDC Required per Contaminant Contaminant DCGLw* I Area Factor Scan MDC Required*
Gross Activity 20,609 2.84 58,530
.. 4 . .-
Statistical Design Hot Spot Design N/2: l 8 Actual Scan MDC>.: l 1,653 Bounded Area (mi): j 6.0 Area Factor I N/A Area Factor l 2.84 Bounded Area (m2: l N/A DCGLwv 1 20,609 Post-EMC N/2: I 8 Scan MDC Required' l 58,530 I *. x
- dpm/1 00 cm2 Q No additional samples are required because the actual scan MDC is less than the DCGLw for each contaminant rv Enable Trainin( IrOKd v'1.0.0 ATTACHWENT
'L/ Building Surface Survey Plan Survey Plan Summary Site: CV TUNNEL & SEAL CHAMBERS 1 & 2 Planner(s): BHB Survey Unit Name: CV PIPE TUNNEL CEILING Comments: SS22-3 Area (M2 ): 16 Classification: 1 Selected Test: WRS Estimated Sigma (cpm): 51.3 DCGL (cpm): 2,077 Sample Size (N/2): 8-'
LBGR (cpm): 1,925 Estimated Conc. (cpm): 22 Alpha: 0.050 Estimated Power: 1.00 Beta: 0.100 EMC Sample Size (N): 8 Prospective Powver Curve o1
_ 09
-0.8
~-
4 0.7 t 0.6
- 0.5
_ 0.4 t 0.3 6 02
- 0.1 F- O 0 Soo 1000 150( 2000 2500 Net Beta (spm)
- Power - DCGL - - Estimated Power
- LBGR
- 1-beta vl.0.0 612812004 COMPASS v1.0.0 612812004 Page 1 ATACLHMVENT( 4 . a
Building Surface Survey Plan Contaminant Summary DCGLw Contaminant (dpml100 cm')
Gross Activity 20,609 Beta Instrumentation Summary Gross Beta DCGLw (dpm/100 cm): 20,609 Total Efficiency: 0.08 Gross Beta DCGLw (cpm): 2,077 ID Type Mode Area (cm')
22 GFPC Beta 126 Contaminant Energy' Fraction' Inst. Eff. Surf. Eff. Total Eff.
Gross Activity 187.87 1.0000 0.48 0.16 0.0776
' Average beta energy (keV) [N/A indicates alpha emission]
' Activity fraction Gross Survey Unit Mean (cpm): 328+/- 51 (1-sigma)
Count Time (min): 1 Number of Average Standard MDC Material BKG Counts (cpm) Deviation (cpm) (dpm/100 cm')
Concrete 31 306 34.5 837 6/2812004 Page 2 COMPASS vl.0.0 COMPASS v1.0.0 6128/2004 Page 2 ATTACHMENT92
.HI E dSI: , oJ Elevated Measurement Comparison (EMC) for Beta Follow the order of each tab below to perform the EMC.
1I Enter Scanning Instrument Efficiencie4 21 Enter Scan MDC Parameters I 3J View EMC Results Scan MDC Required per Contaminant Contaminant l DCGLwe I Area Factor I Scan MDC Required' Gross Activity 20,609 7.87 162.193
&atisticalDesign. Hot Spot Design N/2: l 8 Actual Scan MDC.: l 1,653 Bounded Area (rn: 1 2.0 Area Factor I N/A Area Factor 7.87 Bounded Area (in2 ): I N/A DCGLw*: l 20,609 Post-EMC N/2: [ 8 Scan MDC Required*: l 162,193 II I
- dpm/1 00 cm2 Q No additional samples are required because the actual scan MDC isless than the DCGLw for each contaminant.
W Enable Traininc I- o -
Y11.0.0 A1; ACHWtEW h"8 t °
'v& Building Surface Survey Plan Survey Plan Summary Site: CV TUNNEL & SEAL CHAMBERS I & 2 Planner(s): BHB Survey Unit Name: Walls Around Top of Seal Chamber 1 & 2 Comments: SS17-2 Area (m2 ): 50 Classification: 2 Selected Test WRS Estimated Sigma (cpm): 147 DCGL (cpm): 2,077 Sample Size (N/2): 8 LBGR (cpm): 1,640 Estimated Conc. (cpm): 76 Alpha: 0.050 Estimated Power. 1.00 Beta: 0.100 Prospective Power Curve
_1 v.
Ca 5n, 09 e 0.8 I _ I_ _ 11 _ 1
- II'1- I II
- 0.7
-i _______=_ _______
t 0.6
_ __ _ _ _ II_ _ _ _ _ _ _ _ _ _ _ _ _ I__
- 05 I! _ _ _ _ __ _ _ __ _ _ _ ___
I
_ 0.4 E 03 E
6 0.2 0O =I _________ _______ _______
0 sao 1000 i50S 2000 2500 Net Beta (cpm)
- Power - DCGL - - Estimated Power
- LBGR
- 1-beta COMPASS v1.O.0 612812004 Page 1 ATTACH MISW a - It
Building Surface Survey Plan Contaminant Summary DCGLw Contaminant (dpm/100 cm')
Gross Activity 20,609 Beta Instrumentation Summary Gross Beta DCGLw (dpm/l00 cm'): 20,609 Total Efficiency. 0.08 Gross Beta DCGLw (cpm): 2,077 ID Type Mode Area (cm')
22 GFPC Beta 126 Contaminant Energy' Fraction' Inst. Eff. Surf. Eff. Total Eff.
Gross Activity 187.87 1.0000 0.48 0.16 0.0776 Average beta energy (keV) [NMA indicates alpha emission) 2Activity fraction Gross Survey Unit Mean (cpm): 382
- 147 (1-sigma)
Count Time (min): I Number of Average Standard MDC Material BKG Counts (cpm) Deviation (cpm) (dpm/100 cm')
Concrete 31 306 34.5 837 COMPASS vl.0.0 612812004 Page 2 ATTACHME K- Lo-
'-/ Building Surface Survey Plan Survey Plan Summary Site: CV TUNNEL & SEAL CHAMBERS I & 2 Planner(s): BHB Survey Unit Name: Top of Seal Chamber 1 &2 Comments: SS18-2 Area (m2 ): 43 Classification: I Selected Test: WRS Estimated Sigma (cpm): 147 DCGL (cpm): 2,077 Sample Size (N/2): 8 LBGR (cpm): 1,640 Estimated Conc. (cpm): 76 Alpha: 0.050 Estimated Power: 1.00 Beta: 0.100 EMC Sample Size (N): 8 Prospective Povver Curve
. 09
- __. __I
_ 0.8 8' 0.7- I
- 0.6 0.4 03-0.1 0C __
500 1000 150( 2000 2500 Net Beta (cpm)
- DCGL - - Estimated Power
-LBGR
- I-beta COMPASS v1.0.0 612812004 Page 1 A1 iACHMENT V -i..
Building Surface Survey Plan Contaminant Summary DCGLw Contaminant (dpml100 cm2)
Gross Activity 20,609 Beta Instrumentation Summary Gross Beta DCGLw (dpmr/100 cm=: 20,609 Total Efficiency: 0.08 Gross Beta DCGLw (cpm): 2,077 ID Type Mode Area (cm 2) 22 GFPC Beta 126 Contaminant Energy' Fractlon2 Inst. Eff. Surf. Eff. Total Eff.
Gross Activity 187.87 1.0000 0.48 0.16 0.0776
' Average beta energy (keV) [N/A indicates alpha emission) 2Activity fraction Gross Survey Unit Mean (cpm): 382
- 147 (1-sigma)
Count Time (min): 1 Number of Average Standard MDC Material BKG Counts (cpm) Deviation (cpm) (dpm/100 cm2)
Concrete 31 306 34.5 837 COMPASS vl.0.0 612812004 Page 2 ATTAC. 'MET e {V
IIElevated Measurement Comparison (EMC) for Beta Follow the order of each tab below to perform the EMC.
1)Enter Scanning Instrument Efficienciej 2)Enter Scan MDC Parameters I 3) View EMC Results Scan MDC Required per Contaminant Contaminant l DCGLW I Area Factor I Scan MDC Required*
I I.
Gross Activit 20.609 3.01 62,033 i,.I.
Statistical Design Hot Spot Design L.-,
N/2: I 8 Actual Scan MDCU" 1 1,653 Bounded Area (m): 1 5.4 Area Factor I N/A Area Factor l 3.01 Bounded Area (mr): I N/A DCGLwk: l 20,609 Post-EMC N/2: [T Scan MDC Required*: l 62.033 IME.
- dpm/1 00 cm2 Q No additional samples are required because the actual scan MDC isless than the DCGLw for each contaminant.
P' Enable Traininc I.,
vi.0.0
.ACHMENT AT7 j- / r
CV TUNNEL - VARIABILITY 43-68B SR-0106 BHB No. Counts Count Time (sec) Mode Designator Unshielded 1 304 60 SCL Unshielded 304 2 337 60 SCL Unshielded p 337 3 313 60 SCL Unshielded 313 4 288 60 SCL Unshielded 288 5 338 60 SCL Unshielded 338 6 316 60 SCL Unshielded 316 7 244 60 SCL Unshielded 244 8 362 60 SCL Unshielded 362 9 301 60 SCL Unshielded 301 11 318 60 SCL Unshielded 318 12 298 60 SCL Unshielded 298 13 266 60 SCL Unshielded 266 14 237 60 SCL Unshielded 237 15 304 60 SCL Unshielded 304 16 322 60 SCL Unshielded p 322 17 431 60 SCL Unshielded 431 18 323 60 SCL Unshielded p 323 19 316 60 SCL Unshielded 316 20 398 60 SCL Unshielded p 398 21 391 60 SCL Unshielded 391 22 398 60 SCL Unshielded p 398 23 401 60 SCL Unshielded 1 401 Minimum = 2.37E+02 Maximum = 4.31 E+02 Median => 3.17E+02 Mean =z 3.28E+02 Siama-=: 5.13E+01 A1TAHMIT q - I
SEAL CHAMBER VARIABILITY 43-68B SR-120 BHB No. Counts Count Time (sec) Mode Designator Shielded Unshielded 1 206 60 SCL Shielded 255 2 255 60 SCL Unshielded 206 3 209 60 SCL Shielded 328 4 328 60 SCL Unshielded 209 5 232 60 SCL Shielded 385 6 385 60 SCL Unshielded 232 7 205 60 SCL Shielded _ 333 8 333 60 SCL Unshielded 205 9 223 60 SCL Shielded 268 10 268 60 SCL Unshielded 223 11 209 60 SCL Shielded _ 263 12 263 60 SCL Unshielded 209 13 155 60 SCL Shielded 267 14 267 60 SCL Unshielded 155 15 170 60 SCL Shielded _ 260 16 260 60 SCL Unshielded 170 17 326 60 SCL Shielded _ 477 18 477 60 SCL Unshielded 326 19 372 60 SCL Shielded _ 451 20 451 60 SCL Unshielded 372 21 540 60 SCL Shielded _ 590 22 590 60 SCL Unshielded 540 23 529 60 SCL Shielded _ 705 24 705 60 SCL Unshielded 13 529 Minimum = 1.55E+02 2.55E+02 Maximum : 5.40E+02 7.05E+02 Median 2.16E+02 3.31 E+02 Mean=; 2.BIE+02 3.82E+02 Slqma =z 1.33E+02 1.47E+02 A1TACHMENT q
Williamsbura Concrete Background Measurements 37122N21 Instrurnent 95348 RLM6220 Time Detector Counts Count Time (sec) Mode Designator FSS-001 BHB 0 BKGND 11412002 8:52 1 7.26E+03 1800 SCL Inital Background 0 1 Source Check 1/4/2002 9:07 1 1.79E+05 60 SCL Source (
2 BKGND 11412002 10:05 2 4.40E+01 1800 SCL Inital Background a Comwte CFicjm -r [ ° 14 Source Check 11412002 10:39 2 1.51E+05 60 SCL Source a Shielded Unshielded 15 CON AlS 1/4/2002 13:00 1 2.78E+02 60 SCL Shielded 2.78E+02 __ _
16 CONAtU 1t42002 13:02 1 3.88E+02 60 SCL Unshielded f 3.88E+02 17 CON A2S 1/4R2002 13:20 1 2.39E+02 60 SCL Shielded 2.39E+02 18 CON A2U 1/4/2002 13 21 1 2.22E+02 60 SCL Unshielded 2.22E+02 19 CON A3S 1/4R2002 13:28 1 2.39E+02 60 SCL Shielded 2.39E+02 20 CON A3U 1/412002 13:30 1 2.62E+02 60 SCL Unshielded f 2.62E+02 21 CON MS 114/2002 13:36 1 2.45E+02 60 SCL Shielded 2.45E+02 22 CON A4U 1/412002 13:38 1 2.71 E+02 60 SCL Unshielded _ 2.71 E+02 23 CON ASS 114/2002 13:58 1 2.OOE+02 60 SCL Shielded 2.0E+02 24 CON A5U 11412002 14:00 1 2.82E+02 60 SCL Unshielded P 2.82E+02 25 CON A6S 1/4/2002 14:03 1 1.84E+02 60 SCL Shielded 1.84E+02 26 CON A6U 1/412002 14:05 1 3.10E+02 60 SCL Unshielded B 3.IOE+02 27 CON A7S 11412002 14:09 1 1.98E+02 60 SCL Shielded _ 1.98E+02 28 CON A7U 114/2002 14:10 1 3.1 5E+02 60 SCL Unshielded *p 3.15E+02 29 CON A8S 1/412002 14:19 1 2.34E+02 60 SCL Shielded _ 2.34E+02 30 CON A8S 114/2002 14 22 1 2.31E+02 60 SCL Shielded B 2.31 E+02 31 CON A8U 1/412002 14 24 1 2.88E+02 60 SCL Unshielded J 2.88E+02 32 CON A9S 114/2002 14:31 1 2.65E+02 60 SCL Shielded 2.65E+02 33 CON A9U 1/42002 14:33 1 2.89E+02 60 SCIL Unshilded _ 2.89E+02 34 35 36 CON A10S CON A1OU CONAIS 1/412002 11412002 1/412002 14:42 14:43 15:10 1
1 1
2.46E+02 3.16E+02 1.95E+02 60 60 60 SCL SCL SCL Shielded Unshielded Shielded ON 2.46E+02 I 1.95E+02 3.16E+02 37 CONA11U 1/4R2002 15:12 1 2.94E+02 60 SCL Unshielded n 2.94E+02 38 CON A12S 1/412002 15:13 1 2.21E+02 60 SCL Shielded 2.21 E+02 -
39 CON A12U 1/4R2002 15:14 1 2.84E+02 60 SCL Unshielded n 2.84E+02 40 CON A13S 1/4/2002 15:23 1 1.74E+02 60 SCL Shielded 0 1.74E+02 41 CONA13U 1/4R2002 15:24 1 2.94E+02 60 SCL Unshielded _ 2.94E+02 42 CON A14S 1/412002 15 25 1 1.96E+02 60 SCL Shielded _ 1.96E+02 -
43 CON A14U 11412002 15:26 1 3.33E+02 60 SCL Unshielded B 3.33E+02 44 CON A15S 11412002 15:28 1 2.16E+02 60 SCL Shielded _ 2.16E+02 ,
45 CONA15U 1/412002 15:29 1 3.45E+02 60 SCL Unshielded 0 3.45E+02 46 CON A16S 11412002 15:30 1 1.83E+02 60 SCL Shielded 1.83E+02 47 CON A16U 11412002 15:31 1 3.13E+02 60 SCL Unshielded 3.13E+02 48 CON A17S 1/412002 15:33 1 1.82E+02 60 SCL Shielded 1.82E+02 -- --
49 CON A17U 1/4/2002 15:34 1 3.22E+02 60 SCL Unshielded _ :: - 3.22E+02 50 CON A18S 1/412002 15:35 1 1.84E+02 60 SCL Shielded 1.84E+02 .
51 CON A18U 114/2002 15:36 1 3.24E+02 60 SCL Unshielded B .I 3.24E+02 52 53 54 CON A19S CON A19U CON A20S 1/4/2002 11412002 1/412002 15:37 15:39 15:40 1
1 1
1.91E+02 3.07E+02 1.94E+02 60 60 60 SCL SCL SCL Shielded Unshielded Shieldedt B 9 1.91 E+02 1.94E+02 3.07E+02 55 CON A20U 1/412002 15:41 1 3.33E+02 60 SCL Unshielded i 3.33E+02 56 CON A21S 1/412002 15:57 1 2.23E+02 60 SCL Shielded 2.23E+02 57 CON A21U 11412002 15:58 1 2.92E+02 60 SCL Unshielded _ . - 2.92E+02 58 CON A22S 114R2002 15:59 1 1.72E+02 60 SCL Shielded 1.72E+02 ;____I_ I 59 CON A22U 11412002 16:00 1 2.80E+02 60 SCL Unshielded B -" 2.80E+02 60 CON A23S 11412002 16:01 1 1.94E+02 60 SCL Shielded 1.94E+02 _ _ 'I 61 CON A23U 11412002 16:02 1 3.29E+02 60 SCL Unshielded B 3.29E+02 62 CON A24S 1/412002 16:04 1 1.87E+02 60 SCL Shielded 1.87E+02 63 CON A24U 1/4/2002 16:05 1 3.48E+02 60 SCL Unshielded _ 3.48E+02 64 CON A25S 11412002 16:06 1 2.07E+02 60 SCL Shielded 2.07E+02 65 CON A25U 11412002 16:07 1 3.72E+02 60 SCL Unshielded B 3.72E+02 66 CON A26S 1/412002 16:09 1 2.09E+02 60 SCL Shielded 2.09E+02 67 CON A26U 1/412002 16:10 1 3.26E+02 60 SCL Unshielded t 3.26E+02 68 CON A27S 114/2002 16:11 1 2.07E+02 60 SCL Shielded D 2.07E+02 69 CON A27U 1/412002 16:12 1 3.30E+02 60 SCL Unshielded _ 3.30E+02 70 CON A28S 114/2002 16:14 1 2.30E+02 60 SCL Shielded 2.30E+02 71 CON A28U 11412002 16:15 1 3.06E+02 60 SCL Unshielded _ 3.06E+02 72 CON A29S 114/2002 16.20 1 2.13E+02 60 SCL Shielded 2.13E+02 73 CON A29U 11412002 16 21 1 2.58E+02 60 SCL Unshielded B 2.58E+02 74 CON A30S 1/4/2002 16 24 1 2.33E+02 60 SCL Shielded 2.33E+02 75 CON A30U 11412002 16:25 1 2.89E+02 60 SCL Unshielded B 2.89E+02 76 CON A31S 114/2002 16:28 1 1.84E+02 60 SCL Shielded P 1.84E+02 77 CON A31U 1(412002 16:29 1 2.63E+02 60 SCL Unshielded B 2.63E+02
- Source Check 11412002 17:27 1 1.70E+05 60 SCL - B Minimum = 1.72E+02 2.22E+02 Maximum = 2.78E+02 3.88E+02 Mean = 4 Z11E+02 3.06E+02 Slama = 2.69E+01 I 3.45E+01 ATTACHMEENT..-1I
CV Tunnel Floor - SS22-1 Section of Tunnel May be Removed 63" Opening 1, 2, 3' 4, 5 6 7, 8, O:F, 7 XF -T-X 32 56"
' 10 11 12 1 1 15 I
l- 47"_
ATlACHMUENT 1' -
CV Tunnel Walls - SS22-2 R6 n South Wall 74",
East Wall_
(Metal Plate) Section of Tunnel May be Removed I ....., .
9..
F I . .
6 74"1 Ž1- 2 330 54 .....
..... 68.5'
.I...
OPEN END .I...
30" .. I..
1 5 87" r I. . . I
'L North Wall 488" -1 ATTACHMENT (I ---
CV Tunnel Ceiling - SS22-3 l9 0 11 412 13
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-'2w't : .
, ,- ,, l -56"\ :* .. ::.-
- ~~ 6r - I 7*
L I 2r 3 4' 5' 66' 7' OPEN END Missing Roof Section ATTACHMENT I, 3
TOP OF SEAL CHAMBER 1 North Wall SS17-2 2
SS17-2 SS17-2 West Wall CV Tunnel Entrance o Lower Left Hand Corner Facing Surface ATTACHMENT -1 -iL..
TOP OF SEAL CHAMBER 1 & 2 SS18-2 Floor Area D D 14 LI 15 I
D D
D D LI ATTACHMENT // . S