ML052140077
| ML052140077 | |
| Person / Time | |
|---|---|
| Site: | Saxton File:GPU Nuclear icon.png |
| Issue date: | 05/12/2005 |
| From: | Brosey B FirstEnergy Corp |
| To: | Office of Nuclear Reactor Regulation |
| References | |
| E900-04-021, Rev 0 | |
| Download: ML052140077 (45) | |
Text
Appendix E Survey Results Assessment
SNEC CALCULATION COVER SHEET CALCULATION DESCRIPTION Calculation Number Revision Number Effective Date Page Number E900-04-021 0 1 of 7 Subject Assessment of Survey Results for Discharge Tunnel Class I Areas Question 1 - Is this calculation defined as 'in QA Scope"? Refer to definition 3.5. Yes 0 No D Question 2- Is this calculation defined as a 'Design Calculation'? Refer to definitions 3.2 and 3.3. Yes El No 0 NOTES: If a 'Yes' answer Isobtained 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 REVISION APPROVAL SIGNATURES Calculation Originator B. Brosey/ 3 S l Date y ,9 t Technical Reviewer R. D. Holmes/ Date _
SRO Review A. Paynterl Date V-tN-UzoC Additional Review Date Date
.. SNEC CALCULATION SHEET Calculation Number Revision Number Page Number E900-04-021 0 l Page 2 of 7 Subject Assessment of Survey Results for Discharge Tunnel Class I Areas 1.0 PURPOSE 1.1 The purpose of this calculation is to review and assess survey results from Class 1 survey areas in the Discharge Tunnel (DT). This assessment does not include the Seal Chambers or the Transition area between the Discharge Tunnel and Spray Pump pit. Applicable Class 1 DT survey units are listed below:
- SS1 - Floor area,
- SS4 - Ceiling,
- SS6 South wall,
- SS6 North wall, These survey units include the elbow of the Discharge Tunnel as it turns north toward the Juniata river at about the 150' mark. These areas are shown on Attachment 2-1 through 2-5 of Reference 3.1.
2.0
SUMMARY
OF RESULTS 2.1 Shonka Research Associates (SRA) Survey Results 2.1.1 Automated GFPC surveys were performed by SRA in the Discharge Tunnel Class 1 area as reported in Reference 3.2. A summary of these results is shown in Table 1 below.
Table 1, SRA Results from the Discharge Tunnel Class 1 Areas (SR-83)
Average of Maximum Survey MDC Maximum m Coverage Survey Unit Survey No. dpm/100 cm 2 dpm/100 cm 2 dpm/100 cm2 Average 2 SS1 (Floor) SCS7055S 1,429 -81 1,332 256 7.79 SS1 (Floor) SCS7055Z 1,640 69 1,469 406 9.36 SS1 (Floor) SRS7037Z 4,501 -1 2,469 217 94.42 SS4 (Ceiling) SCS7074Z 1,746 80 1,289 311 20.01 SS4 (Ceiling) SCS7075Z .3,304 195 NA 911 12.54 SS4 (Ceiling) SCS7076Z 3,327 1,088 NA 1,261 12.33 SS4 (Ceiling) SRS7036Z 11,585 427 NA 2,472 57.5 SS6-1 SRS7046Z 5,196 126 NA 467 83.85 (S ou th W a lf) _ _ _ _ _ _ __ _ _ _ _ _ _ _ _ _ _ _ _
SS6-1 SCS7053S 2,168 148 1,501 496 19.04 SS6-1 SCS7053Z 1,535 -72 1,311 267 11.19 SS6-2 SRS7047Z 7,179 53 NA 972 100.32 SS6-2W SCS7054S 1,851 155 1,458 683 19.19 (North Wall) SCS7054Z 1,218 -144 1,249 138 8.25 Total= 447.54 NA=
?_. SNEC CALCULATION SHEET Calculation Number Revision Number Page Number E900-04-021 0 Page 3 of 7 Subject Assessment of Survey Results for Discharge Tunnel Class I Areas 2.1.2 The total Class I surface area in the DT (to the 150' mark and excluding the Transition area and Seal Chambers) is -470 m2 (from Reference 3.1). From Table 1, the amount of surface area surveyed by SRA was reported to be -448m 2 . Some of the area surveyed by SRA was in the entrance to the Transition area. Thus the actual surface area covered by SRA in the DT Class 1 area was less than 448 M2 .
2.1.3 A review of the SRA data indicates that the applicable gross activity DCGLw of 6,726 dpm/100 cm2 (6,605 dpm/100 cm2 Cs-137 - Attachment 1-1 to 1-6), from Table 2 was not exceeded when averaged over any one (1) square meter of surface area. Thus SRA data indicates that surface contamination levels for the surveyed surfaces in the DT meet SNEC site release criteria.
Table 2, Summary Of DCGLw Values Surface DCGLw (dpml100 cm2) Volumetric DCGLw (pCUg)
GA = 8,968 (6,726 A.L.) 6.52 (4.89 A.L.) for Cs-137 DCGLw values from Reference 3.1.
A.L = the administrative limit 2.1.4 Some of the Discharge Tunnel surface area is severely pitted, and was not considered an appropriate candidate for SRA's semi-automated scanning process.
SNEC personnel actually identified about 112 M 2 of rough/pitted surface area in the DT that includes other areas SRA could not access. These surfaces were surveyed or re-surveyed using a survey design/survey technique that more appropriately compensated for detection efficiency loss as a result of heavily pitted surfaces. Thus additional survey work was necessary to complete all Class 1 areas.
2.2 Survey of Rough/Pitted and Difficult to Access Surfaces in the Discharge Tunnel Class I Area (SR-0119, 0 to 150 feet).
IAW Reference 3.1, rough surface areas (shown on Attachment 2-1 through 2-5 and are listed on Attachment 3-1), were surveyed using several methodologies which included:
- 1. Scanning of structural surfaces using 2" by 2" Nal radiation detectors (conversion efficiency to be 2 208, 000 cpm/mR/h with Cs-137 window setting),
- 2. Scanning of structural surfaces using GFPC radiation detectors (total detection efficiency to be Ž23.9% for Cs-1 37 energy beta radiations),
- 3. Sampling of structural surfaces when indicated.
In addition to the above requirements, static GFPC measurements were taken throughout Class 1 survey units.
2.2.1 Review of Results from Survey Work Under SR-01 19 and SR-0096 Nal scanning of structural surfaces under SR-01 19 yielded no instrument response above the alarm point (AP) of 300 gcpm in any area except those identified in Table
- 3. While this AP criteria is not adequate to establish residual surface contamination levels are below initial site release criteria, this survey methodology is considered a useful tool in screening for elevated areas including potential volume contaminated
O, h SNEC CALCULATION SHEET Calculation Number Revision Number Page Number E900-04-021 0 Page 4 of 7 Subject Assessment of Survey Results for Discharge Tunnel Class I Areas concrete surfaces, since volume contamination can sometimes go undetected when only surface beta measurements are used to a survey area.
Table 3, Nal Alarm Point (AP) Locations/Results (SR-0119)
Survey Location Designation I Area 1 AP No. 1Area size (mi) I Results (gcpm) I 1 SS4-005A DT Ceiling AP1, AP2 0.76 404, 381 2 SS4-011A DT Ceiling API, AP2 4.39 903, 874 3 556-1-010A DT South Wall AP1 0.15 350 NOTE: Background values in the DT ranged from about 50 to 100 gcpm (see Reference 3.3).
2.2.2 Review of SR-0096 data (Attachment 5-1 and 5-2), collected in the SS4 survey unit (DT ceiling) at about the same location as items I and 2 in Table 3 above, are shown in Table 4 below.
Table 4, SS4 Nal Static Measurements & Cs-137 Results (in pCilg) (SR-0096)
Sample/SurveyLocation' IISample SNEC NO. lSample Point No. 1pCg l cpm cmII I l SS4 DT Ceiling @ Seal Chamber 3 SXCC4233 SP-1 18.5 +/-2.0 669 2 SS4 DT Ceiling @ Seal Chamber 3 SXCC4234 SP-2 11.8 +/- 1.3 618 3 SS4 DT Ceiling @ Seal Chamber 3 SXCC4235 SP-3 18.1 +/- 1.8 1221 4 SS4 DT Ceiling @ Seal Chamber 3 SXCC4236 SP-3. OC 30.0 +/- 3.0 1255 5 SS4 DT Ceiling @ Seal Chamber 3 SXCC4237 SP-4 1.2 +/- 0.2 1071 Mean 15.9 +/-4.2 967 +/- 3041
'The total area size is reported in SR-0096 to be aproximately 5.4 m2 which is about the same size area as that reported in SR-01 19 for the same locations (0.76 m2 + 4.39 m = 5.2 i 2).
2.2.3 Using Table 4 Data to Predict the Exposure Rate from a Volumetrically Contaminated Area (SS4 -005A & SS4-01 1A).
2.2.3.1 A MicroShield (Reference 3.4) model was used to generate an exposure rate from the DT ceiling hotspot described in Table 4 (see Attachment 4-1). The area is assumed to have a diameter that results in a 5.4 m2 surface area. The source term loading for the MicroShield model is 1 pCi/g (Cs-1 37). A density of 2.35 g/cc was assumed for DT concrete materials, and the source term is assumed to be to a depth of 3 (from SR-0096, Attachment 5-I and 5-2).
2.2.3.2 The exposure rate is based on a build-up condition in air with the dose point located five (5) feet below the hotspot center point (the DT ceiling is 10 feet high). The exposure period is assumed to be 2000 hour0.0231 days <br />0.556 hours <br />0.00331 weeks <br />7.61e-4 months <br />s/yr with a 50%
site/area occupancy factor. The resulting dose is 7.998E-05 mRnh/pCi/g x 15.9 pCi/g = 1.27E-03 mR/h x 2000 hrs x 0.5 = 1.27 mR (-1.27 mrem/y).
2.2.3.3 If the area surrounding the hotspot has a mean surface concentration the same as the mean of the maximum dpml100 cm 2 values from Table 1 (3,591 dpm/100 cm2), and this value is compared to the SNEC administrative limit of
a n t SNEC CALCULATION SHEET Calculation Number Revision Number Page Number E900-04-021 0 Page 5 of 7 Subject Assessment of Survey Results for Discharge Tunnel Class I Areas 6,605 dpml100 cm2, then the yearly administrative dose fraction for this area would be 0.54 from surrounding structural surface concentrations. The additional dose fraction from the volumetric contamination of the hotspot would be 1.27 mrem/(25 mrem - 25%) = 0.068. The total upper bounding dose fraction for this area may then be estimated as 0.54 + 0.068 = 0.61 = or 61%
of the administrative dose limit in the vicinity of the hotspot.
2.2.3.4 Based on this extremely conservative dose estimate, the area meets the SNEC site administrative dose limit under a building occupancy scenario.
Conservative assumptions used in this dose estimate are listed below:
- uniform contamination of the hotspot to a depth of 3" over the entire 5.4 m2area,
- a 2000 hour/yr building occupancy exposure scenario,
- 50% site building usage - personnel located 5' from the DT ceiling at the effective center of the hotspot,
- mean volumetric concentration of the hotspot from Table 4 at 15.9 pCi/g for Cs-1 37,
- surrounding surfaces (floor, walls, etc.) outside the hotspot at a mean surface concentration from Table I (the mean of the maximum dpm/1 00 cm2 values for each survey unit reported by SRA).
NOTE Ingestion, inhalation, and dose contributing pathways other than direct exposure are assumed to provide little or no additional dose with respect to the volumetric concentrations.
2.2.4 GFPC Measurements of the Rough/Pitted Surfaces and SRA Inaccessible Areas 2.2.4.1 From SR-0119 close-out (Attachment 6-1 to 6-4), the GFPC measurement data are input to the Compass DQA program section. The DQA Compass results for each survey unit are provided in Attachment 7-1 through 7-16.
Because two (2) elevated measurements were discovered during the scan survey work on the SS4 ceiling area that exceeded the DCGLw of 424 ncpm, a MARSSIM equation 8-2 calculation was performed. This unity calculation is provided as Attachment 8-1. All areas met the SNEC site release criteria and passed both WRS and EMC testing.
<< SNEC CALCULATION SHEET Calculation Number Revision Number Page Number E900-04-021 0 l Page 6 of 7 Subject Assessment of Survey Results for Discharge Tunnel Class I Areas 2.3 Conclusion Measurement and sampling efforts indicate that surface concentrations on the exposed surface area of the DT are below the SNEC site release criteria IAW the requirements of the SNEC LTP (Reference 3.5).
3.0 REFERENCES
3.1 SNEC Calculation No. E900-04-007, 'Discharge Tunnel Survey Design for Class 1Areas".
3.2 "Final Report for SCM Survey of Saxton Nuclear Experimental Corporation", Shonka Research Associates (SRA), Inc. 4939 Lower Roswell Rd., Suite 106 Marietta, GA, Revision 1, Volumes I and 2, March 3, 2005.
3.3 SNEC Radiological Survey FSS 589 of SS1, SS4, SS6-1 and SS6-2 in the SSGS Discharge Tunnel from 0 to 150 feet, 5-25-04.
3.4 MicroShield, Computer Radiation Shielding Code, Version 5.05-00121, Grove Engineering.
3.5 Plan SNEC Facility License Termination Plan.
3.6 SNEC Procedure E900-IMP-4500.59, "Final Site Survey Planning and DQA".
3.7 NUREG-1507, -Minimum Detectable Concentrations With Typical Radiation Survey Instruments for Various Contaminants and Field Conditions," June 1998.
3.8 NUREG-1575, uMulti-Agency Radiation Survey and Site Investigation Manual", August, 2000.
3.9 Microsoft Excel 97, Microsoft Corporation Inc., SR-2, 1985-1997.
4.0 ASSUMPTIONS AND BASIC DATA 4.1 Williamsburg concrete GFPC measurements were used as background values for input to the Compass computer program (see Attachment 9-1). The Williamsburg data is corrected for elevation by subtracting the mean closed window DT measurement from the mean closed window Williamsburg measurement. The net difference is then subtracted from each Williamsburg open window reading. This is done for each survey unit and the lowest resulting background data set is used as the representative background for the DT. Since there are only fifteen (15) static measurements per survey unit, only the first fifteen values from Attachment 9-1 are used as input to Compass.
4.2 For purposes of this calculation, it is assumed that a person exposed as a result of the elevated concrete concentrations in the Discharge Tunnel ceiling spends 50% of their time on-site and under the center of the elevated area.
4.3 Fov'purposes oltffs calculation, it is assumed that the mean of all of the highest values per survey unit (in dpm/100 cm2) as reported by SRA, are representative of the DT general area. This value is used to estimate a upper bound dose resulting from surface contamination. This is an extremely conservative value and over estimates the mean residual surface concentration in the DT by at least an order of magnitude.
SNEC CALCULATION SHEET Calculation Number Revision Number Page Number E900-04-021 0 Page 7 of 7 Subject Assessment of Survey Results for Discharge Tunnel Class I Areas 5.0 CALCULATIONS 5.1 All calculations are performed internal to applicable computer codes or within an Excel spreadsheet previously identified.
6.0 APPENDICES 6.1 Attachment 1-1 to 1-6, is the DCGL Calculation Logic for the Discharge Tunnel. This is the methodology used to determine the effective DCGLw for the DT area.
6.2 Attachment 2-1 to 2-5, are diagrams of the Discharge Tunnel Class I areas showing the pitted/rough surface area locations.
6.3 Attachment 3-1, is a list of the rough surface areas with the approximate areal size and depth of the pitting for/in each area.
6.4 Attachment 4-1, is the MicroShield model used to represent the exposure rate from the SS4 elevated ceiling area in the DT.
6.5 Attachment 5-1 and 5-2, is a copy of the SR-0096 close-out/summary characterization results for the DT.
6.6 Attachment 6-1 and 6-4, is a copy of the SR-01 19 close-out/summary results for the FSS survey work in the DT.
6.7 Attachment 7-1 to 7-16, Compass DQA results for each survey unit in the DT.
6.8 Attachment 8-1, EMC calculation for the SS4 area.
6.9 Attachment 9-1, is the Williamsburg concrete background data set. This data has had an elevation correction of 55.6 cpm removed from each open window measurement.
DCGL Calculation Logic-Discharge Tunnel Survey Unit: SNEC Discharge Tunnel
Description:
The purpose of this calculation is to determine a representative isotopic mix for the Discharge Tunnel from available sample analyses. The effective surface area and volumetric DCGLWs are then determined from the mean percent of applicable samples.
IlI. Data Selection Logic Tables: The radionuclide selection logic and subsequent DCGL calculations are provided in seven (7) tables. These tables were developed using Microsoft Excel spreadsheet software. 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 Discharge Tunnel sample analyses. These results are from scoping, characterization, and prelpost 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 - This table provides the best overall representation of data selected and decayed from Table 1. In Table 1 half-life values (days) are listed above each respective nuclide column. Samples are decayed to the date noted above Table I (e.g. January 15, 2004). Positive results are denoted in a yellow background field while MDA values are in a gray background.
Table 3: Decayed Listing of Positive Nuclides & MDAs Removed- This table provides the decayed values of positive nuclides selected in Table 2. In addition MDA values have been removed from this table.
Table 4: 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 6. Note that the Co-60 mean percents were averaged using only samples 1 & 2. In addition, the mean percents calculated from sample 2 for Am-241, Pu-238, Pu-239 and Ni-63 were not averaged throughout the spreadsheet since there was only one sample where these respective nuclides were positive. This results in higher umean percent of total' values in the mix, which are conservative.
Table 5: Ratio to Cs-1 37 for Positive Nuclides -This table provides the calculation methodology for determining the surrogate ratio 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 7. Note that the Co-60 ratios were averaged using only samples 1 & 2. In addition, the ratios calculated from sample 2 for Am-241, Pu-238, Pu-239 and Ni-63 were not averaged throughout the spreadsheet since there was only one sample where these respective nuclides were positive. This results in higher 'mean percent of total' values in the mix, which are conservative.
Note: From Tables 4 and 5 only the "mean % of total" values are used as input to the "Effective DCGL Calculation Spreadsheet" as illustrated In Tables 6 and 7.
1 ATTACHMENT f -.
Table 6: Effective DCGL Calculator for Cs-1 37 (dpmIO00 cmA2) -This table provides the surface gross activity DCGLW calculation results from data inputted from Table 4.
Table 7: Effective DCGL Calculator for Cs-1 37 (in pClg) - This table provides the surrogate volumetric modified Cs-137 DCGLW calculation results from data inputted from Table 5.
IV. Summary - Since the Discharge Tunnel is a concrete structure the release limit is primarily based on the surface area DCGLW. However, a small portion of the Discharge Tunnel ceiling Class 1 area has volumetric contamination. Using the above data selection logic tables the calculated gross activity DCGLW for surface area is 8,968 dpmI100 cm2 . The Cs-137 volumetric DCGLW is 6.52 pCVg. These values would be reduced by 25% as part of SNEC's requirement to apply an administrative limit as required by the License Termination Plan (LTP).
2 ATTACKMENT I1-Z
TABLE I -Data Lstina (oCilal
,Dca Date T 112 T12 T 112 T12 T *2 T12 T 1!2 TV2 T 112 T112 Tt2 JAn1iry 15 2004
_ 448527 1 1044615 11925 23275111019 592515786105 32050 6875 18813847751 52596 12092602 5s36561525 49674 1
_SHECSample Nol LocrtionDescripion H3 Sr.9O Co60 Csa137 Am-241 Pu-236 Pu.239 Pu-241 C.14 Hi163 Eu-152 4Analdysis Date ElapsedTime(d1 1 SMOX1CSDSDCyI 031 ecyareTunure ;arlIlScreping 0.84 120 0.2 0.04 004 6 6 5 2 July29 1999 rS33 2 SXICSD99C033I CisciargeTunnel CrarLne Scralro; 100 8 30 1 4800 1 54 1 16 2.5 _1 60 1 6 55 July 22. 1999 le'S1 3 SXISSS9264 SISS car ue porSer 22 0Sr 1 1 1 November-22C 1999_
SxsSOSDU9 SSGSDScharge urnel Foor Seoiment-61C 0.3 2.3 November 22 1999 ISIS 6 SX5SD93267 SSGSDischarge-unmelFloorSroinranl-'SC 016 2 SXCC4236 SSG$D95oaB TunneldSP-3Ceiing.Sect1 SuexI 0732 0.0259 00237 25.8 0.0181 0.026 0.0159 2.52 0141 0.54 T urrmetl2 Concrete asi Core- SR55 BuildingSt.ructure 2.01 0.0138 0.0663 26.9 0.0876 0.148 .0-119 3.98 TABLE 2 Docaved Lisfina InCiful
- 1 511C SampleNo ~ Ltocatio~n'Cesription H54 Sr-90 Co4O CS.137 Arn-2411 PU-235 Pu-239 PU.241 C-l4 Well6 Eu-162 AnalysisDate I SursDOSM OV Viscrairger Turnp .cScraiog 4V6E-0111.08E402 1l99E-01 3 86-02 4OOE-02 _____July 29 1099 4
j 5X5500028.4 SX-SCS9u251 SSG$
SSGS Cischsrge Tnnol FlourSeurnrnert Cischri TunnelFluur 7C Secinernr$I
__1___
1.16E-01 1,45E..00 __ _ _
1,74E-01 2 09Er00 _ _ _
_ _ _ _ November 22, 1999 Novem~ber22, 1999 S SXS5005267 950 Cischarge TunnelFlourSeuicnenr-SIC __ _ __ 927E-02 I ,82E.00 _ _ _ _ _ _ _ _ _ _ _ 4 _ _ _ _ _ _ November 22, 1999 6 SXCC42!OS SSGSCrararge Tunnel SP.3 Ceirn; Sed 1 Slce I 7.22E-01 T 2 57E-02 2129E-022 67Ea01 I 1.81E-02 2.69E-02 I 159E-02 1249E+0011.41E-01 I 5.39E-01 II128E-01 October 16 2003 7 sXCi7V353 DOGS evrCra era ner Codree'.a~lCor -StIS undringSIructyre I 1.93E+00 I 1.36E-02 I 6 668E.02I 2.66E a01 I 87 E 402 1.47E401 1.19E-02 13.86E+00 1.89E-01 I 2.421+002.QOE-01 a SXCN1iS39 SSGSO ischarge,'urneleZICc,-rtererleuCore- Si SSuOldior StrucW relI 1.91E+00 I 1.65E-02 I 1.19E-01 I 4A0E+00 I 1.31E-01 0.26 1 30DE0114.82E+00 1.
SSGSTunnelNorthVia S -I FronnFNor I8.76E+00 l 2 8OE-02 4.81E-02 I 2 12E+01l 438E-02 4.5JE42 SSGS0Tunnme RuDubb 2 70C.SR- OGS 3.185+00 I 4.69F-02 7.06I-03 41141E-01 5974-03 294E-03
.letr- 1,57E801 I 1,22E800 I 177E-00 I 4 52E802 I 8,35E-01 2.95E-01 392E-01 1 10E401 l1 75E800 I 12 30481 1 2919 I56224 1363006 1 1997 1 0550 I 5930 118414 Mean%4 ~
ofTole 3,14% j 024% j 0,35% I 9040% 1 0,17% 1 0,06% 1 0 08% 1 219%
KEY IYellovw Shaded Background a Positive Result I lGray Shaded Background
- klDA 3
TABLE 3 - Decayed Listing of Positive Nucildes & MDAs Removed (pCUg)
= SlIEC Sample NIo LocationlDescriptton Co-60 Cs-137 Am.241 Pu.238 Pu-239 Nl-63 Total (pCilg) 1 SX1OSD9900l3 1 Discharge Tunnel Wall Scraping 4 67E.01 1 O8E+02 1W0877 2 Sx1OSD990C33 Discharge Tunnel 6 Drain Line Scraping 1 66E+01 4.33E+03 5 36E+00 1 54E+00 2.50E+00 5i33E+01 4409 52 3 SXSSD95264 SSGS Discharge Tunnel Floor Sediment -670 1 46E+00 1.45 4 SX5SD99266 SSGS Discharge Tunnel Floor Sediment -610 2.09E+00 2 09 6 SXSS099267 SSGS Discharge Tunnel Floor Sediment -50 1.82E+00 1.82 6 SXCC4236 SSGS DischargeTunnel SP-a, Ceiling. Sect 1. Slice I 2.57E+01 __25 65 7 SXCN3Z53 SSGS Discharge Tunnel #2. Concrete Wall Core -SR-56. Building Structure 2.65E+01 26.47 8 SXCt3539 SSGS Discharge. Tunnel# 3. Concrete Wall Core - SR.56. Building Structure 1.40E+00 1 40 9 SXCW735 SSGS Tunnel. North vall- 5-6 From Floor 2.12E+01 21t16 10 SXSD923 SSGS Tunnel. Rubble Q 700. SR-MOO 1.41E-01 0 14 mlean_ 8 55E+00 4 52E+02 5 36E+00 1 54E+00 2 50E+00 5 33E+01 523 14 Sigma-* 11 433 1363 086 I _= _ _ _
lean % of Totw 86.38% 1.02% t1.63% 0.30% 0 48% 10.19% 100.00 TABLE 4 - Mean Percent of Total for Positive Nucildes SNEC Sample lo LocationlDescription Co-60 Cs-137 Am-241 Pu-238 Pu-239 1Il-63 Total 1 SX105D990031 Discharge Tunnel WNall Scraping 0 43% 99.67%/* 100 00%
2 SX1CSGC90033 Discharge Tunnel 6 Drain Line Scraping 0.38% 98-20% 0 12% 0,04% 0.06% 1.21% 100 00%
3 SXSSD99264 SSGS Discharge Tunnel Floor Sediment -670C 100.00% 100 00%
4 SXSSD99266 SSGS Discharge Tunnel Floor Sediment 6S10C 10000% 100.00%
5 SXSSD99267 SSGS Discharge Tunnel Floor Sediment -550C 100.00% 100.00%
6 SXCC4236 SSGS Discharge Tunnel SP-3. Ceibng. Sect 1. Slice 1 100.00% 100 00%
7 5XCv353S SSGS Discharge Tunnel 42. Concrete Wall Core -SR-56. Building Structure 100.00% 1000%
8 SXCN3539 SSGS Discharge, Tunnel*#. Concrete Wall Core - SR-56. Building Structure 100.00% 100 00%
_ SXCVN735 SSGS Tunnel. North WNall- 5 -S From Floor 100.00% 100.00 10 SX5D923 SSGS Tunnel, Rubble C 7C0, SR-OOS 100.00% 100.00 tmean_ 4 03E-03 9 98E-01 1 22E-03 3 50E-04 5 67E-04 1 21E-02 1 02 Sigma - 0 0004 0 006 Itean % o7Total' 0.40% 98 20% 0.12% 0 03% 0 06% 1.19% 100 00%
TABLE 6 - Ratio to Cs-137 for Positive Nuclides SNEC Sample lto LocationiDescription Co-60 Cs-137 Am-241 Pu-238 lPu-239 l i-63 Total 1 SX10SD990031 Discharge Tunnel N1allScraping 4 31 E-03 1.OOE+00 1.00 2 SX1CSDO90033 Discharge Tunnel 6 Drain Line Scraping 3.84E-03 1.OOE+00 124E-03 3 57E-04 5 77E-04 1.23E-02 1 02 3 SX5SD99264 SSGS Discharge Tunnel Floor Sediment -670 1OOE+00 ______l 1.00 4 SX5SD992S SSGS Discharge Tunnel Floor Sediment -610 1.OOE+00 1 00 5 SX5SD99267 SSGS Discharge Tunnel Floor Sediment -550 1.OOE+00 _______ 1.00 6 SXCC4236 SSGS Discharge Tunnel SP-3. Ceiling. Sect 1.Slice 1 I1 OOE+00 II III 1 00 7 SXCW33S SSGS Discharge Tunnel 4 2. Concrete Wall Core - SR-5E. Building Structure 5 1 OOE+00 I I II_l 1.00 8 SXCv/353g SSGS Discharge, Tunnel S! Concrete Wall Core - SR-56. Building Structure 1.OOE+00 II l l 1 00 9 SXC;t735 SSGS Tunnel. North Wall - S-S From Floor 1.00E+00 1 I I 1 00 10 sXsD923 SSGS Tunnel. Rubble i2 70C . SR-COOS 1OOE+00 II 100 Ileani 4.08E-03 1,OOE+00 1,24E-03 3.57E-04 5,77E-04 1 .23E-02 1 02 Sigma_ 0 0003 0 0000 I I i i Mean Ve of cotal* 0 40% 98,18% 0 12% 0 04% J0 06% 1.21% 100 00%
4 C0 _
Table 6 Effective DCGL Calculator for Cs-137 (dpml100 cmA2) 8968 dpml1OO cm^2 6726 dpml1O0 cmA2 l 2m mremy TEDE Limit 88 U07mtOO l 660513? Ad tmItOGe cLImKA2 SAMPLE 1lO(s)=*l Discharge Tunnel -I l 8807 ldpmli00 cmA21l 6605 - ldpmItO0 cm^2 It"SNECALMI. 75% I Individual Sample Input Limits Allowed Beta dpml1O0 Alpha dpmMlOO Isotone inClIn. uCi. etc.) % of Total (domM100 cmA21 domllOO cmA2 mremV TEDE cmA2 cm^2
¶ Am-241 1.22E.03 0.120% 27 10.77 9 97 10.77 Am-241 2 C-14 0 000% 3,700,000 0 00 0 00 0.l i C014 3 Co-60 4.03E.03 0 397% 7,100 35 56 0.13 35D6 Co_60 4 cs.137^tiS .' ,-9.98E.01 l,98.203% 4~:6 t,4w 28,4000
,0 ....
8806.M9 .6 .%.8807;86*.
- 'i 80.0t.# Cs137lif.4Vr-s 5 Eu-152 0 000% 13,000 0 00 0 00 0 co Eu-152 6 H.3 000%
0 120,000,00 0.000 0 00 Not Detectable ii H.3 7 1ii-63 1.21E-02 1.191% 1,800,000 106.78 0.00 [lot Detectable :-63 :
8 Pu-238 3.50E.04 0.034%0 30 3 09 2 57 .::fA.. .. 3 09 Pu.238 g Pu-239 5.67E.04 0,056% 28 5.00 4 47 : ... 5 00 Pu-239 C) 10 Pu-241 0 000%, 880 0.00 0 00 Not Detectable ..... A .: Pu.241 11 Sr-90 0.000° . o8,700 0.00 0 00 0 00 . Sr.90 100 000% 8968 25.0 8843 19 Maximum Permissible f dpmllOO cmA2 24 5
Table 7 I')
rn
-16 6
DT Floor - SS1 SSM-2-01A
.SSI-O4OA East Wall ATTACHMENT 2. -*
i 1. C .
DT Ceiling - SS4 SS4-001IA WSS4-04A i, S
".d 54i:62A SS4-0 1A I..
p SS4-002A#
...... I-;
SS4-003A ATTACHMENT I - 2
. S. **
DT South Wall - SS6-1 ATTACHMENT 7 .3
DT North Wall - SS6-2 ATTACHMENT TL- -
r . . *- =- . " - '- a'- .1-G- -, -, -- . ' : . .. . I . .
, Corner o f DT SS4-01 3A Transition Area to SPP Floc'r - SSI1 !
Ceiling - SS4 SS6-1-024A L.:.
SS6-1-012A 9:
I; :, - . .
SW Wall - SS6-1 NE Wall - SS6-2 ATTACUMENT 1*
Dlscharge Tunnel Class 1 Areas Not Surveyed by SRA ROUGH OR DIFFICULT TO SURVEY-SLIRFACE AREAS--___
. Weigh~d Oepth Location Code Area (Inches-2) (Meters^21 Average Depth (mm) Inches Area Fraction Correction SS6-2-001A 234 0.1510 10.2 0.40 0.13% 0.001 SS6-24002A 361 0.2329 14.2 0.56 0.21% O.O0t SS6-2-003A 52 0.0336 12.1 0.48 0.03% 0.000 SS6-2-004A 105 0.0677 13.3 0.52 0.06% 0.001 SS6-2-005A 28 0.1804 10.7 0.42 0.16% 0.00O SS6-2-006A 56 0.0361 11.2 0.59 0.03% 0.000 SS6-2-007A 30a 0.1987 11.3 0.44 0.18% 0.001 SS6-2-008A 66 0.0426 16.6 0.65 0.04% 0.000 SS6-2-009A 66 0.0426 14.9 0.59 0.04% 0.000 SS6:2010A- 213923 1.9831- -. 85 -0.35 8.02% 0.028 SS6-2-011A 25 0.0103 12.6 0.50 0.01% 0.000 SS6-2-012A 33 0.0213 15.7 0.62 0.02% 0.000 SS6-24013A 2130 1.3743 9.5 0.37 1.23% 0.005 SS6-24014A 25 0.0161 7.2 0.28 0.01% 0.000 SS6-2-015SA 216 0.1394 15.7 0.62 0.12% 0.001 SS6-2-016A 120 0.0774 10.1 0.40 0.07% 0.000 SS6-2-017A 33865 21.8497 31.75 1.25 19.51% 0.244 SS6-2-018A 11286 7.2817 6.35 0.25 6.50% 0.016 SS6-2-019A 3841 2.4782 6.35 0.25 2.21% 0.006 SS6-14001A 432 0.2787 16.7 0.66 025% 0.002 SS6-1-002A 28 0.0181 11.2 0.44 0.02% 0.000 SS6-1-003A 381 0.2458 21.1 0.83 0.22% 0.002 SS6-1404A 323 0.2084 7.9 0.31 0.19% 0.001 SS6-1-005A 81 0.0523 10.5 0.41 0.05% 0.000 SS6-1-006A 52 0.0336 30.1 1.19 0.03% 0.000 SS6-1-007A 20 0.0129 13.3 0.52 0.01% 0.000 SS6-1-008A 6 0.0039 18.8 0.74 0.00% 0.000 SS6-1-009A 63 0.0406 13 0.51 0.04% 0.000 SS6-1-OI4A 238 0.1536 14.6 0.57 0.14% 0.001 SS6-1-011A 162 0.1045 6.3 0.25 0.09% 0.000 SS6-1-012A 7339 4.7351 35.5 1.40 4.23% 0.059 SS6-14013A 11686 7.5398 9.3 0.37 6.73% 0.025 SS6-1-014A 192 0.1239 10.8 0.43 0.11% 0.000 SS6-14015A . 500 0.3226 9.6 0.38 0.29% 0.001 SS6-1.016A 824 0.4026 12.3 0.48 0.36% 0.002 3SS6-1-017A 52 0.0336 8.5 0.33 0.03% 0.000 SS6-1418A 20 0.0129 15.2 0.60 0.01% 0.000 SS6-1-019A 2133 1.3762 19.1 0.75 1.23% 0.009 SS6-1-020A 1791 1.1556 18.7 0.74 1.03% 0.008 SS6.1-021A 3955 2.5518 22.5 0:89 228%o 0.020 SS6-1-022A 1751 1.1297 8.7 0.34 1.01% 0.003
!56-1-023A 1498 0.9685 19.05 0.75 0.86% 0.006 SS6-1-024A 1175 0.7581 16.35 0.25 0.68% 0.002 SS6-1-025A 4775 3.0808 6.35 0.25 2.75% 0.007 SS14OOIA 341 0.2200 8.8 0.35 0.20% 0.001 SSI-002A 3916 2.5266 22.4 0.88 2Z26% 0.020
!S1-003A 2457 1.5853 68.3 2.69 1.42% 0.038 SS1-004A 350 0.2258 23.4 0.92 0.20% 0.002 SS14-05A 1304 0.8413 27.6 1.09 0.75% 0.008 SS1-006A 14914 9.6225 6.35 0.25 8.59% 0.021 SS4-001A 6203 4.0022 18.5 0.73 3.57% 0.026 SS44002A 1938 1.2504 11.1 0.44 1.12% 0.005 SS4-003A 252 0.1626 4.3 0.17 0.15% 0.000 SS4-004A 3744 2.4156 18.5 0.73 2.16% 0.016 SS4405A 1168 0.7536 13.2 0.52 0.67% 0.003 SS4-006A 664 0.4284 . 0.4 0.02 0.38% 0.000 SS4-007A 840 0.5420 4 0.16 0.48% 0.001 SS4-008A 1393 0.8988 2.3 0.09 0.80% 0.001 SS4-009A 325 0.2097 8.7 0.34 0.19% 0.001 SS4-410A 105 0.0677 2.1 0.08 0.06% 0.000 SS4-011A 6825 4.4035 44.45 1.75 3.93% 0.069 SS4-012A 1495 0.9646 25.4' 1.00 0.86% 0.009 SS44013A 19074 12.3065 6.35 0.25 10.99% 0.027 Total Area- 173568 112.0 10.0 t.00% 0.700 Mean Depih-> 14.6 0 .58 A~ax~M2x->
Mfn-> 00 SAgma-> .4 2 Sigma + Mean-> 14 ATTACKMCEN3T-
MicroShield v5.05 (5.05-00121)
GPU Nuclear Page :1 File Ref:
DOS File: HOTSPOT.MS5 Date:
Run Date: April 17, 2005 By:
Run Time: 8:12:07 PM Checked:
Duration : 00:00:06 Case
Title:
DT Hotspot
Description:
Ceiling in DT Near SC3 - I pCi/g Cs-137 Geometry: 8 - Cylinder Volume - End Shields Source Dinmnensions Height 7.62 cc~m 3.0 in Radius 131.106 ccm 4ft 3.6 in Dose Points X Y z
- 1 0 cm 160.02 cm 0cm 0.0 in 5 ft 3.0 in 0.0 in Shields Shield Name Dimension Material Density Source 4.11e+05 cm3 Concrete 2.35 Air Gap Air 0.00122 Source Input Grouping Method : Actual Photon Energies Nuclide curies becquerels uCi/cm3 Bq/cm 3 Ba-137m 9.1476e-007 3.3846e+004 2.2231e-006 8.2255e-002 Cs-1 37 9.6698e-007 3.5778e+004 2.3500e-006 8.6950e-002 Buildup The material reference is : Source Integration Parameters Radial 60 Circumferential 60 Y Direction (axial) 60 Results Ener-v Activitv 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 7.007e+02 2.660e-06 3.253e-06 2.215e-08 2.71 Oe-08 0.0322 1.293e+03 5.121e-06 6.303e-06 4.121e-08 5.073e-08 0.0364 4.705e+02 2.868e-06 3.794e-06 1.629e-08 2.156e-08 0.6616 3.045e+04 2.483e-02 4.121 e-02 4.813e-05 7.988e-05 TOTALS: 3.292e+04 2.484e-02 4.122e-02 4.821e-05 7.998e-05 ATTACKMENT-1--.1--
SURVEY REQUEST CONTINUATION-SHEET SR NUMBER SR-0096 l AREAILOCATION l SSGS Discharge Tunnel - Ceiling Outside Seal II I Chamber 3 SPECIFIC SAMPLING I SURVEY INSTRUCTIONS OR COMMENTS RESULTS
SUMMARY
FOR SR-0096 SR-0096 was issued to obtain sodium iodide (Nal) detector readings and concrete samples of two small elevated radioactivity areas identified by SRA. This area is located in the ceiling of the discharge tunnel at seal chamber 3.
The survey unit for this SR is SS4. The SR required the following radiological measurements:
- Surface Scan Measurements Using a 2 x 2" Sodium Iodide Detector- 100% surface scan is required of the affected areas (within 2 inches) at a rate not exceeding 10 cm/second. The action level > 300 gross cpm.
- Concrete Samples - approx. 4" in depth. Obtain two core bore samples (approx. 4" deep) in each elevated activity area in areas indicating the highest activity.
- Additional sampling/surveying may be requested by SR Coordinator.
- QC Repeat Measurements - A minimum of 5% of all surface scan measurements and sampling will be re-performed using identical methodology.
- 1. Summary of Results A. Surface Scan Measurements (2"x 2" Sodium Iodide Detector) 100% surface scan was performed in the areas listed above, covering 11.2 M2. Action level was 300 gross cpm.
Results: Approximately 5.4 m2 of the surveyed area indicated activity above the action level. Ten static measurements were performed at the locations indicating the highest activity and five samples were obtained at the highest static measurement readings' locations.
B. Concrete Core samples Five core samples were obtained, including a QC sample of Sample Point #3. The highest result indicated 30 pCig Cs-137, <0.12 pCig Co-60. The range of positive results was from 0.2 to 30 pC/g Cs-137. Average achieved MDA for Co-60 was <0.1 pCVg. Contamination was indicated to be present to a depth of 3.0" at location SP-3 QC with an activity of 0.33 pCig Cs-137. The following table lists the sample results and the corresponding static measurement results:
Page 1 of 2 ATTACH4MENT 5 - .1.
SURVEY REQUEST CONTINUATION-SHEETI l SR NUMBER SR-0096 l AREAJLOCATION SSGS Discharge Tunnel - Ceiling Outside Seal II I Chamber 3 SPECIFIC SAMPLING I SURVEY INSTRUCTIONS OR COMMENTS Lab Results Static Measurement LOCATION SAMPLE Cs-137(pCilg) Co-60 (pCilg) Results Nal Detector
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _( cp m )
SP-1 SX-CC-4233 18.5 +/- 2.0 <0.16 669 SP-2 SX-CC-4234 11.8 +/- 1.3 <0.13 618 SP-3 SX-CC-4235 18.1 +/- 1.8 <0.07 1221 SP-3 QC SX-CC-4236 30.0 i 3.0 <0.12 1255 SP-4 SX-CC-4237 1.2 +/-0.2 <0.12 1071 MEAN 966.8 2 SIGMA 303.7 STATIC MEASUREMENT
SUMMARY
MIN 618 MAX 1255
. MEDIAN 1071 C. Quality Control (QC) Measurements and Comparisons Repeat Scan/Static Measurements and Surface Soil Sampling was performed and met the applicable acceptance criteria established in Section 4.6 of E900-IMP-4520.04.
- 2. Exceptions:
MDA requirements for analysis of concrete samples were raised by the SR Coordinator on 10/20/03. Original required MDAs were difficult to achieve due to low sample weights. This new requirement is still less than 10%
DCGL for Cs-1 37 and Co-60 and therefore does not negatively impact the validity of the results. The results are accepted.
David Sarge (GRCS) Date Page 2 of 2 ATTACK~iENT - a.
-E '; rE QtiES 0 - - -
SR-0119 SSGS Discharge Tunnel from 0 to 150 feet ORIGINAL RESULTS
SUMMARY
FOR SR-0119 SR-01 19 was issued to perform FSS of areas bypassed by SRA during the performance of the Discharge Tunnel FSS scan survey. In addition, static measurements are required to be obtained throughout the first 150 ft. of the Discharge Tunnel. The initial total area for this survey unit is approx. 112 sq. meters. The survey unit for this SR is SS1, SS4, SS6-1, and SS6-2.
The SR required the following radiological measurements:
- Surface Scan Measurements Using a 2- x 2- Sodium Iodide Detector (set to identify Cs-1 37) - 100% surface scan is required of the surfaces listed on pages 5 and 6 of the SR at a rate not exceeding 5 inches/second at a distance within 2 inches. The action level is 300 gross cpm.
- Surface Scan Measurements Using a GFPC Detector - 100% surface is required. Establish ABCRs for each survey unit prior to scanning. The action level is 300 ncpm. Perform scan at a rate not exceeding 2.2 cm/second on contact with the surface.
- Static Measurements Using a GFPC Detector - Obtain 1- minute static measurements at each of the locations listed on page 7 and 8 of the SR. The calculated DCGLwfor this survey is 424 ncpm.
- Concrete Core Bore Samples (if necessary) - Obtain a 3- core bore sample in locations requested by FSS Management. If areas too difficult to accomplish sampling via core boring, obtain samples with the use of an electric or air-operated concrete scabbling equipment. Obtain a minimum of 200 cc's of sample.
- Steel Sampling - In areas indicating activity above action level, obtain sample via scraping action. Attempt to collect 100 cc's of material.
- QC Repeat Measurements - A minimum of 5% of all surface scan measurements and sampling will be re-performed using identical methodology.
- Additional sampling/surveys may be performed at the request of the SR Coordinator.
- 1. Summary of Results A. Surface Scan Measurements ( 2"x 2" Sodium Iodide Detector)
Surface scanning was performed on all listed areas. Action level was 300 gross cpm.
Results: All areas indicated activity below action level with some exceptions. Static measurements were performed at these areas indicating activity above the action level. The following table lists these areas with the results.
Page 1 of 4 ATTACHMENT 6 . 1-
i 6SUMBER SR-01 19 1FAREAI61C#ATQ SSGS Discharge Tunnel from 0 to 150 feet s}- LI~1ST iPUClNG~ _ e Survey Area Alarm Point Number l Measurement Result (gross cpm)
SS4-005A AP1 404 SS4-005A AP2 381 SS4-011A API 1903 SS4-011A I AP2 874 1 SS6-1-010A I API 1 350 B. Surface Scan Measurements Using a GFPC Detector Surface scanning was performed on all listed areas. Action level was 300 net cpm.
Results: All areas indicated activity below action level with some exceptions. Static measurements were performed at these areas. Two areas indicating activity above the action level. The following table lists these areas with the results.
Survey Area
[Alarmn Point Surface Areaf(ft)
Shielded (cm) 1Reading Unshielded1 (pm) 1Reading Netcpm
_________ Number ( edn cm edn cm e p SS4-01A API 2 323 1205 882 SS4-011A AP2 2 319 880 561 I No samples were obtained from these areas.
C. Static Measurements Using a GOPC Detector 1-minute static measurement pairs were obtained at the locations listed in the SR. The calculated DCGLwfor this survey is 424 ncpm.
Results: The highest net cpm result was indicated at FP1 5 in SS4 with 404 ncpm, the average was 57 ncpm.
The following table lists the sample location, lab results and corresponding static measurement results:
Page 2 of 4 ATTACHMENT -
I. -
Survey Unit Shielded UnshieldedSurvey Unit Shielded Unshielded Suve Reading Reading Net CPM Suve Reading Reading Net CPM (cpm) (cpm) (cpm) (cpm)
SSI /FP1 177 238 61 SS6-1 /FP1 152 183 31 FP2 198 202 4 FP2 151 185 34 FP3 198 211 13 FP3 153 187 34 FP4 162 189 27 FP4 139 185 46 FP5 190 236 46 FP5 107 171 64 FP6 188 224 36 FP6 126 161 35 FP7 207 198 -9 FP7 151 239 88 FP8 214 275 61 FP8 160 264 104 FP9 216 255 39 FP9 215 226 11 FP10 204 213 9 FP10 184 260 76 FP11 230 237 7 FP11 208.0 321.0 113 FP12 224 201 -23 FP12 183.0 184.0 1 FP13 230 251 21 FP13 160 223 63 FP14 179 254 75 FP14 142 205 63 FP 15 225 213 -12 FP15 178 252 74 MEAN 202.8 226.5 MEAN 170.7 234.3 2 ST. DEV. 41.6 50.5 2 ST. DEV. 56.5 95.6 MAX 230 275 MAX 215 321 MIN 162 189 MIN 126 161 MEDIAN 204 224 MEDIAN 169 239 SS4IFP1 232 237 5 SS6-2/FP1 123 180 57 FP 2 l 182 239 _ 57 FP2 158 171 13 FP3 163 206 43 FP__3 114 155 41 FP4 191 254 63 FP_4 148 182 34 FP5 165 205 40 FP_ 126 162 36 FP6 153 171 18 FP6 120 163 43 FP7 196 220 24 FP7 129 193 64 FP8 190 292 102 FP8 161 236 75 FP9 202 232 30 FP9 164 214 50 FP10 192 232 40 FP10 162 210 48 FPII 238 355 117 FP11 182 363 181 FP12 233 246 13 FP12 164 224 60 FP13 173 230 57 FP13 159 243 84 FP14 194 457 263 FP14 164 208 44 FP15 200 604 404 FP15 149 203 54 MEAN 193.9 278.7 MEAN 155.4 Z5.7 2 ST. DEV. 52.1 21 2 ST.DEV. 36.6 3 106.4 MAX 238 604MAX18236 MIN 153 171 MIN 120 16 MEIN 192 234.5 MEDIAN 161.5 212 -
Page 3of 4 ATT1ACKVIENT-14 -i.5N.
- .r R§ 5IZNUEA SR-01 19 I l SSGS Discharge Tunnel from 0 to 150 feet g,jgi LIPUNG SURVE INSUT'RUCRtON M MENTSD D. Concrete Core Bore Samples FSS Management requested no samples.
E. Steel Sampling No samples were required due based on scan results.
- 2. Quality Control (QC) Measurements and Comparisons Repeat Scan/Static measurements were performed and met the applicable acceptance cziteria established in Section 4.6 of E900-MP-4520.04.
- 3. Exceptions and Discrepancies:
GFPC detector scan of survey point SS4-004 encountered an inaccessible area around an 8' pipe (approx. 30-sq. in. area not able to be surveyed). This area was scanned by Nal detector. Results of that scan indicate activity below action level.
David Sarge (GRCS) 6k' Date ae/4~4 'O +
Page 4of 4 ATTACKMENT & it
'p "l&' DQA Building Surface Report Assessment Summary Site: Discharge Tunnel Class 1 Areas Planner(s): BHB Survey Unit Name: Discharge Tunnel SS6-2 Report Number: 1 Survey Unit Measurements: 15 Reference Area Measurements: 15 Test Performed: WRS Test Result: Pass Judgmental Areas: 0 EMC Result: Not Performed Assessment
Conclusion:
Reject Null Hypothesis (Survey Unit PASSES)
Retrospective Power Curve
- 1& ,_ _ __ _ _ _____ __ _ r - 4 , _ ___
- In I- ,
OF -0e- .1 XA *- __.
i-01 . 17~: _ _
0 0..
.9 r-i r.
-,4- -1 ___ __ ___.__
F-
-?- -I _ _
-4.- -fi _
Z- -1 _ _ _ _ _ 1 7__ s_
-11 00 0 100 200 300 400 SOO Net Beta (cpm)
-. - Prospective Power
- 1-beta -*- - Actual Power
- LBGR - -Estmated Power
- DCGL --- Retrospective Power COMPASS vi.0.0 411812005 Page 1 AMTACMEMN 1 LL
DQA Building Surface Report Survey Unit Data NOTE: Type = S" indicates survey measurement.
Type = 'RI indicates reference measurement.
Measurement Material Type Gross Beta (cpm)
SS6-2-1 Concrete S 180 SS6-2-2 Concrete S 171 SS6-2-3 Concrete S 155 SS6-2-4 Concrete S 182 SS6-2-5 Concrete S 162 SS6-2-6 Concrete S 163 SS6-2-7 Concrete S 193 SS6-2-8 Concrete S 236 SS6-2-9 Concrete S 214 SS6-2-10 Concrete S 210 SS6-2-11 Concrete S 363 SS6-2-12 Concrete S 224 SS6-2-13 Concrete S 243 SS6-2-14 Concrete S 208 SS6-2-15 Concrete S 203 WC1 Concrete R 332 WC2 Concrete R 166 WC3 Concrete R 206 WC4 Concrete R 215 WC5 Concrete R 226 WC6 Concrete R 254 WC7 Concrete R 259 WC8 Concrete R 232 WC9 Concrete R 233 WC10 Concrete R 260 WC1 1 Concrete R 238 WC12 Concrete R 228 WC13 Concrete R 238 WC14 Concrete R 277 WC15 Concrete R 289 COMPASS v1.0.0 411812005 Page 2 ATrACKMENT__2-
%-JU DQA Building Surface Report Basic Statistical Quantities Summary Statistic Survey Unit Background DQO Results Sample Number 15 15 N12=10 Mean (cpm) 207.13 243.53 31.0 Median (cpm) 203.00 238.00 NIA Std Dev (cpm) 50.95 38.47 62.1 High Value (cpm) 363.00 332.00 N/A Low Value (cpm) 155.00 166.00 N/A Statistical Test Summary Sum of Ranks: 465 Sum of Reference Ranks: 345 Critical Value: 272 Result Pass Data Type Adjusted Data Rank Reference Rank 166 R 590 16 16 206 R 630 17 17 215 R 639 18 18 226 R 650 19 19 228 R 652 20 20 232 R 656 21 21 233 R 657 22 22 238 R 662 23.5 23.5 238 R 662 23.5 23.5 254 R 678 25 25 259 R 683 26 26 260 R 684 27 27 277 R 701 28 28 289 R 713 29 29 332 R 756 30 30 155 S 155 0 162 S 162 2 0 163 S 163 3 0 171 S 171 4 0 180 S 180 5 0 182 S 182 6 0 193 S 193 7 0 203 S 203 8 0 208 S 208 9 0 210 S 210 10 0 COMPASS v1.0.0 4/18/2005 Page 3 ATTACKVMIET 7 3
'W DQA Building Surface Report Statistical Test Summary Data Tvye Adjusted Data Rank Reference Rank 214 S 214 11 0 224 S 224 12 0 236 S 236 13 0 243 S 243 14 0 363 S 363 15 0 COMPASS v1.0.0 4118/2005 Page 4 ATTACbMENT 7. (-7_
- DQA Building Surface Report Assessment Summary Site: Discharge Tunnel Class I Areas Planner(s): BHB Survey Unit Name: Discharge Tunnel SS6-1 Report Number: 1 Survey Unit Measurements: 15 Reference Area Measurements: 15 Test Performed: WRS Test Result: Pass Judgmental Areas: 0 EMC Result: Not Performed Assessment
Conclusion:
Reject Null Hypothesis (Suivey Unit PASSES)
Retrospective Power Curve l
- *- _ _TA ^ _IL C
,_- _ _ _ _ r _ _ l
_ _, _ _ r_ I_ - '--1 -
3-t-
- c. f* n -1 _ _ _ _ _ _ _ _ _ _ _
V
-11
-1
-+. :L ____
-e l .t _ _ _ _ _ _ I__
00 0 100 200 300 400 500 NetBeta (cpm)
- - Prospective Power
- 1-beta -* * - Actual Power
- LBGR - - Estimated Power
- DCGL --- Retrospective Power COMPASS v1.0.0 411812005
_A0N0-Page I AIrACHMELNT __7 - 5___
DQA Building Surface Report Survey Unit Data NOTE: Type = "S"indicates survey measurement.
Type = 'R" indicates reference measurement.
Measurement Material Type Gross Beta (cpm)
SS6-1-1 Concrete S 183 SS6-1-2 Concrete S 185 SS6-1-3 Concrete S 187 SS6-1-4 Concrete S 185 SS6-1-5 Concrete S 171 SS6-1-6 Concrete S 161 SS6-1-7 Concrete S 239 SS6-1-8 Concrete S 264 SS6-1-9 Concrete S 226 SS6-1-10 Concrete S 260 SS6-1 -11 Concrete S 321 SS6-1-12 Concrete S 184 SS6-1-13 Concrete S 223 SS6-1-14 Concrete S 205 SS6-1-15 Concrete S 252 WC1 Concrete R 332 WC2 Concrete R 166 WC3 Concrete R 206 WC4 Concrete R 215 WC5 Concrete R 226 WC6 Concrete R 254 WC7 Concrete R 259 WC8 Concrete R 232 WC9 Concrete R 233 WC10 Concrete R 260 WC1 1 Concrete R 238 WC12 Concrete R 228 WC13 Concrete R 238 WC14 Concrete R 277 WC15 Concrete R 289 COMPASS vl.0.0 411812005 Page 2 ATTACHUS4T i7 -
j DQA Building Surface Report Basic Statistical Quantities Summary Statistic Survey Unit Background DQO Results Sample Number 15 15 Nt2=10 Mean (cpm) 216.40 243.53 31.0 Median (cpm) 205.00 238.00 N/A Std Dev (cpm) 44.15 38.47 62.1 High Value (cpm) 321.00 332.00 N/A Low Value (cpm) 161.00 166.00 N/A Statistical Test Summary Sum of Ranks: 465 Sum of Reference Ranks: 345 Critical Value: 272 Result: Pass Data Type Adjusted Data Rank Reference Rank 166 R 590 16 16 206 R 630 17 17 215 R 639 18 18 226 R 650 19 19 228 R 652 20 20 232 R 656 21 21 233 R 657 22 22 238 R 662 23.5 23.5 238 R 662 23.5 23.5 254 R 678 25 25 259 R 683 26 26 260 R 684 27 27 277 R 701 28 28 289 R 713 29 29 332 R 756 30 30 161 S 161 1 0 171 S 171 2 0 183 S 183 3 0 184 S 184 4 0 185 S 185 5.5 0 185 S 185 5.5 0 187 S 187 7 0 205 S 205 8 0 223 S 223 9 0 226 S 226 10 0 COMPASS v1.0.0 4/1=0~05 Page 3 A-iw'SmiEwt 1 ^
'I3' DQA Building Surface Report Statistical Test Summary Data Type Adjusted Data Rank Reference Rank 239 S 239 11 0 252 S 252 12 0 260 S 260 13 0 264 S 264 14 0 321 S 321 15 0 COMPASS v1.0.0 4/18/2005 Page 4 AMAC'HMENL 78
-sl M?3 DQA Building Surface Report Assessment Summary Site: Discharge Tunnel Class 1 Areas Planner(s): BHB Survey Unit Name: Discharge Tunnel SS4 Report Number 2 Survey Unit Measurements: 15 Reference Area Measurements: 15 Test Performed: WRS Test Result: Pass Judgmental Areas: 0 EMC Result: Not Performed Assessment
Conclusion:
Reject Null Hypothesis (Survey Unit PASSES)
Retrospective Power Curve
- O. 1
_ - 1 = - _1__-
'A.
-l9 i- _ -
I-
-o~ _ ___
I-x _ _ _
v:
L
}:8 2 k*^,L=
2-
-O -
4 -SI. _ -_._-
-a4 -h __
i- -9 _ _
-1100 0 100 200 300 400 500 600 Net Beta (cpm)
Prospective Powe br M 1-beta -- - -Actual Power LBGR - - Estimated Power DCGL -- - Retrospective Power COMPASS v1.0.0 411812005 Page 1 A GEAC-M ENT -.
DQA Building Surface Report Survey Unit Data NOTE: Type = 'S' indicates survey measurement.
Type = 'R' Indicates reference measurement.
Measurement Material Type Gross Beta (cpm)
SS4-1 Concrete S 237 SS4-2 Concrete S 239 SS4-3 Concrete S 206 SS4-4 Concrete S 254 SS4-5 Concrete S 205 SS4-6 Concrete S 171 SS4-7 Concrete S 220 SS4-8 Concrete S 292 SS4-9 Concrete S 232 SS4-10 Concrete S 232 SS4-11 Concrete S 355 SS4-12 Concrete S 246 SS4-13 Concrete S 230 SS4-14 Concrete S 457 SS4-15 Concrete S 604 WC1 Concrete R 332 WC2 Concrete R 166 WC3 Concrete R 206 WC4 Concrete R 215 WC5 Concrete R 226 WC6 Concrete R 254 WC7 Concrete R 259 WC8 Concrete R 232 WC9 Concrete R 233 WC10 Concrete R 260 WC1 I Concrete R 238 WC12 Concrete R 228 WC13 Concrete R 238 WC14 Concrete R 277 WC15 Concrete R 289 COMPASS v1.0.0 4/18/2005 Page 2 ATTAC.4-MENT .17* -
'~ DQA Building Surface Report Basic Statistical Quantities Summary Statistic Survey Unit Background DQO Results Sample Number 15 15 N/2=10 Mean (cpm) 278.67 243.53 31.0 Median (cpm) 237.00 238.00 N/A Std Dev (cpm) 113.74 38.47 62.1 High Value (cpm) 604.00 332.00 N/A Low Value (cpm) 171.00 166.00 N/A Statistical Test Summary Sum of Ranks: 465 Sum of Reference Ranks: 344 Critical Value: 272 Result: Pass Data Type Adjusted Data Rank Reference Rank 166 R 590 15 15 206 R 630 17 17 215 R 639 18 18 226 R 650 19 19 228 R 652 - 20 20 232 R 656 21 21 233 R 657 22 22 238 R 662 23.5 23.5 238 R 662 23.5 23.5 254 R 678 25 25 259 R 683 26 26 260 R .684 27 27 277 R . 701 28 28 289 R - 713 29 29 332 R 756 30 30 171 S 171 1 0 205 S 205 2 0 206 S 206 .-3 0 220 S 220 4 0 230 S 230 5 0 232 S 232 6.5 0 232 S 232 6.5 0 237 S 237 8 0 239 S 239 9 0 246 S 246 10 0 COMPASS v1.0.0 411812005 Page 3 A, TAC~NWIT 7 -
'\1 DQA Building Surface Report Statistical Test Summary Data Type Adjusted Data Rank Reference Rank 254 S 254 11 0 292 S 292 12 0 355 S 355 13 0 457 S 457 14 0 604 S 604 16 0 COMPASS vl.0.04 0 4118U2005 Page 4 A, l A014MUtENT 7 .
UIB DQA Building Surface Report Assessment Summary Site: Discharge Tunnel Class 1 Areas Planner(s): BHB Survey Unit Name: Discharge Tunnel SS1 Report Number 1 Survey Unit Measurements: 15 Reference Area Measurements: 15 Test Performed: WRS Test Result: Pass Judgmental Areas: 0 EMC Result: Not Performed Assessment
Conclusion:
Reject Null Hypothesis (Survey Unit PASSES)
Retrospective Power Curve W.
C
= -l- -9 I^_ _
r-0-
- 0 4 - l U __ -. __ t_
t.
_l
-I,
_._=__U. -___ _
00 0 100 200 300 400 Soo NetBeta(cpm)
Prospective Power
- 1-beta - -- - Actual Power LBGR - - Estimated Power DCGL -e- Retrospective Power COMPASS v1.0.0 411812005 Page 1 ATACHM 77ENT 1L3.
DQA Building Surface Report Survey Unit Data NOTE: Type = 'S" indicates survey measurement, Type = 'R" indicates reference measurement.
Measurement Material Type Gross Beta (cpm)
SS1-1 Concrete S 238 SS1-2 Concrete S 202 SS1-3 Concrete S 211 SS1-4 Concrete S 189 SS1-5 Concrete S 236 SS1-6 Concrete S 224 SS1 -7 Concrete S 198 SSI-8 Concrete S 275 SSI-9 Concrete S 255 sS1-10 Concrete S 213 SS1-1 1 Concrete S 237 SS1-12 Concrete S 201 SS1-13 Concrete S 251 SS1-14 Concrete S 254 SS1-15 Concrete S 213 WC1 Concrete R 332 WC2 Concrete R 166 WC3 Concrete R 206 WC4 Concrete R 215 WC5 Concrete R 226 WC6 Concrete R 254 WC7 Concrete R 259 WC8 Concrete R 232 WC9 Concrete R 233 WC10 Concrete R 260 WC1 1 Concrete R 238 WC12 Concrete R 228 WC13 Concrete R 238 WC14 Concrete R 277 WC15 Concrete R 289 COMPASS v1.0.0 4/18/2005 Page 2 MiA C~iMEWI 7 __*LY..
DQA Building Surface Report Basic Statistical Quantities Summary Statistic Survey Unit Background DQO Results Sample Number 15 15 N12=10 Mean (cpm) 226.47 243.53 31.0 Median (cpm) 224.00 238.00 NIA Std Dev (cpm) 25.26 38.47 62.1 High Value (cpm) 275.00 332.00 NIA Low Value (cpm) 189.00 166.00 NMA Statistical Test Summary Sum of Ranks: 465 Sum of Reference Ranks: 345 Critical Value: 272 Result Pass Data Type Adjusted Data Rank Reference Rank 166 R 590 16 16 206 R 630 17 17 215 R 639 18 18 226 R 650 19 19 228 R 652 20 20 232 R 656 21 21 233 R 657 22 22 238 R 662 23.5 23.5 238 R 662 23.5 23.5 254 R 678 25 25 259 R 683 26 26 260 R 684 27 27 277 R 701 28 28 289 R 713 29 29 332 R 756 30 30 189 S 189 1 0 198 S 198 2 0 201 S 201 3 0 202 S 202 4 0 211 S 211 5 0 213 S 213 6.5 0 213 S 213 6.5 0 224 S 224 8 0 236 S 236 9 0 237 S 237 10 0 COMPASS v1.0.0 411812005 Page 3 AATC F MENTL ...+/- ,
DQA Building Surface Report Statistical Test Summary Data Type Adjusted Data Rank Reference Rank 238 S 238 I11 0 251 S 251 12 0 254 S 254 13 0 255 S 255 14 0 275 S 275 15 0 COMPASS v1.0.0 411812005 Page 4 A T.TAC! MENT L1- 1g
Appendix F Survey Area Drawing I
NORTH
.1 PLAN EL. 790'-O"u SECTION B-Bu 4 MC SECTION A-Au a
II n
. M w
. IC Mr SECTION C-Cu X Mot I A
- At.
Mroxsi.
1,p 3a.- .. a a 4 a S s 4 ___ 4 4 3 a 4 6 E1 I _
I' :j, 2 ,
I I,
'A '
0
'I 2 3 E 'I 3
'I 2
1
'4 4
A
'4 4
,I 6 -
El APPENDIX F