ML19338B786
| ML19338B786 | |
| Person / Time | |
|---|---|
| Site: | Zion File:ZionSolutions icon.png |
| Issue date: | 11/23/2019 |
| From: | Massengill R ZionSolutions |
| To: | Office of Nuclear Material Safety and Safeguards |
| References | |
| ZS-2019-0101 | |
| Download: ML19338B786 (43) | |
Text
ZION STATION RESTORATION PROJECT FINAL STATUS SURVEY RELEASE RECORD Revision 0 CONDENSATE FEED WATER SUPPLY AND RECIRCULATION BURIED PIPE NO. T-103, T-105 & T-106 SURVEY UNIT 00101A
FSS RELEASE RECORD CONDENSATE FEED WATER SUPPLY AND RECIRCULATION BURIED PIPE SURVEY UNIT 00101A
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PREPARED BY / DATE:
2019-11-23 R. Massengill, Radiological Engineer REVIEWED BY / DATE:
2019-11-23 D. Montt, Radiological Engineer APPROVED BY / DATE:
2019-11-23 D. Wojtkowiak, C/LT Manage
FSS RELEASE RECORD CONDENSATE FEED WATER SUPPLY AND RECIRCULATION BURIED PIPE SURVEY UNIT 00101A
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TABLE OF CONTENTS
- 1.
EXECUTIVE
SUMMARY
................................................................................................... 6
- 2.
SURVEY UNIT DESCRIPTION......................................................................................... 7
- 3.
CLASSIFICATION BASIS.................................................................................................. 7
- 4.
DATA QUALITY OBJECTIVES........................................................................................ 8
- 5.
SURVEY DESIGN.............................................................................................................. 10
- 6.
SURVEY IMPLEMENTATION........................................................................................ 13
- 7.
SURVEY RESULTS............................................................................................................ 17
- 8.
QUALITY CONTROL....................................................................................................... 20
- 9.
INVESTIGATIONS AND RESULTS............................................................................... 20
- 10. REMEDIATION AND RESULTS..................................................................................... 21
- 11. CHANGES FROM THE SURVEY PLAN....................................................................... 21
- 12. DATA QUALITY ASSESSMENT..................................................................................... 21
- 13. ANOMALIES....................................................................................................................... 21
- 14. CONCLUSION.................................................................................................................... 21
- 15. REFERENCES.................................................................................................................... 22
- 16. ATTACHMENTS................................................................................................................ 23 ATTACHMENT 1 - CONDENSATE FEEDWATER PUMPS PENETRATION DIAGRAM................ 24 ATTACHMENT 2 - MEASUREMENT DATA........................................................................... 26 ATTACHMENT 3 - SIGN TEST............................................................................................. 37 ATTACHMENT 4 - QC DATA.............................................................................................. 42
FSS RELEASE RECORD CONDENSATE FEED WATER SUPPLY AND RECIRCULATION BURIED PIPE SURVEY UNIT 00101A
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LIST OF TABLES Table 1 - Dose Significant Radionuclides and Mixture............................................................................... 9 Table 2 - Base Case and Operational DCGLs............................................................................................ 10 Table 3 - Surrogate Ratios.......................................................................................................................... 11 Table 4 - Surrogate Base Case and Operational DCGLs........................................................................... 11 Table 5 - Synopsis of Survey Design......................................................................................................... 13 Table 6 - Condensate Buried Pipe System - Statistical Quantities............................................................ 19 LIST OF ACRONYMS AND ABBREVIATIONS ALARA As Low As Reasonably Achievable AMCG Average Member of the Critical Group BcDCGL Base Case Derived Concentration Guideline Level BcSOF Base Case Sum of Fractions DQO Data Quality Objective DCGL Derived Concentration Guideline Level EMC Elevated Measurement Comparison FOV Field of View FSS Final Status Survey HTD Hard-to-Detect ID Internal Diameter LTP License Termination Plan MARSSIM Multi-Agency Radiation Survey and Site Investigation Manual NaI Sodium Iodide OD Outside Diameter OpDCGL Operational Derived Concentration Guideline Level OpSOF Operational Sum of Fractions QAPP Quality Assurance Project Plan QC Quality Control ROC Radionuclides of Concern
FSS RELEASE RECORD CONDENSATE FEED WATER SUPPLY AND RECIRCULATION BURIED PIPE SURVEY UNIT 00101A
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SOF Sum of Fractions TEDE Total Effective Dose Equivalent TSD Technical Support Document UCL Upper Confidence Level WWTF Waste Water Treatment Facility ZNPS Zion Nuclear Power Station ZSRP Zion Station Restoration Project
FSS RELEASE RECORD CONDENSATE FEED WATER SUPPLY AND RECIRCULATION BURIED PIPE SURVEY UNIT 00101A
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- 1.
EXECUTIVE
SUMMARY
This Final Status Survey (FSS) Release Record for survey unit 00101A, the Condensate Feed Water Supply and Recirculation Buried Pipe, (i.e., pipe nos. T-103, T-105 and T-106, has been generated for the Zion Station Restoration Project (ZSRP). The release record was developed in accordance with ZionSolutions procedure ZS-LT-300-001-005, Final Status Survey Data Reporting (Reference 1) and satisfies the requirements of Section 5.11 of the Zion Station Restoration Project License Termination Plan (LTP) (Reference 2).
The FSS Sample Plan S3-00101AF was developed in accordance with ZionSolutions procedure ZS-LT-300-001-001, Final Status Survey Package Development (Reference 3) the LTP, and guidance from NUREG-1575, Multi-Agency Radiation Survey and Site Investigation Manual (MARSSIM) (Reference 4).
Following the completion of this FSS, the survey unit numbers for the eight (8) buried pipe survey units listed in the Attachment 4, Survey Units for Structures of ZionSolutions procedure ZS-LT-300-001-002, Survey Unit Classification (Reference 5), were changed.
The eight (8) different piping systems for survey unit 00101A were changed to 00101A through 00101H to allow for a clear distinction between these pipes in the FSS Database.
FSS was conducted to demonstrate that the concentrations of residual radioactivity are equal to or below site-specific Derived Concentration Guideline Levels (DCGL) corresponding to the dose criterion in 10 CFR 20.1402, Radiological Criteria for Unrestricted Use.. The Condensate Feed Water Supply and Recirculation Buried Pipes, (i.e., pipe nos. T-103, T-105 and T-106), were classified as MARSSIM Class 3.
The Condensate Feed Water Supply and Recirculation Buried Piping consisted of three (3) sections of piping that ran under the Turbine Building basement floor slab. The T-103 section, a 20 inch Outside Diameter (OD) pipe, was approximately 226 feet, running from the penetration in the Oil Room to a vertical through the Turbine Building basement floor slab.
The T-105 section, a 4.5 inch OD pipe, was approximately 221 feet in length and ran to the Condensate Recirculation pump. The T-106 section, a 12.75 inch OD pipe, was approximately 21 feet in length and ran to Condensate Transfer and Make-up Pumps. The total length of the Condensate Feed Water Supply and Recirculation pipe identified in these three (3) sections of pipe from Technical Support Document (TSD)14-016, Attachment F, was approximately 468 feet.
The Condensate Feed Water Supply and Recirculation pipe (pipe nos. T-103, T-105 and T-106) was Class 3 buried pipe. The pipe approached the east wall of the Turbine Building basement from the Crib House Basement approximately 51 feet under the road from east to west at a depth of approximately 586 foot elevation. The pipe turned 90 degrees downward and ran a distance of 30 feet and turned 90 degrees west where it penetrated the east A wall of the
FSS RELEASE RECORD CONDENSATE FEED WATER SUPPLY AND RECIRCULATION BURIED PIPE SURVEY UNIT 00101A
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Turbine Building basement at 556 foot elevation. The pipe then ran from east to west under the Turbine Building basement floor slab. The Condensate pipe branched into two (2) different headers which both terminated on the 560 foot elevation (floor) of the Turbine Building.
The pipes were cut inside the Turbine Building basement prior to the demolition and basement backfill. As they were not capped or isolated, there is unobstructed groundwater intrusion into each pipe. The T-105 pipe was accessible for survey measurements to be conducted.
However, neither the T-103 nor the T-106 sections of this system were available for survey due to groundwater intrusion. Since the T-105 buried pipe was part of the same system, it was determined that measurements taken within the T-105 section of pipe would be representative of radiological conditions within the system interior, including the two (2) pipes obstructed by groundwater intrusion.
The FSS of the Condensate Feed Water piping was performed using a Ludlum 2350-1 Data Logger paired with a 44-162 Sodium Iodide (NaI) gamma detector. One-minute static measurements were taken to quantify the activity in the pipe. The survey plan required a minimum of fifty-eight (58) measurements to be collected in each of the pipes. Each measurement had a calculated Field of View (FOV) of 5.245 ft2 (4,864 cm2). The total length of the three (3) pipes of this survey unit was 468 linear feet.
For the FSS of the Condensate Feed Water piping, a total of 257 readings were obtained. All of the readings were below a Sum of Fractions (SOF) of 0.5, when compared against the Operational DCGL for buried pipe (OpDCGLBP) resulting in a mean Operational SOF (OpSOF) result of 0.320. The mean Base Case SOF (BcSOF), when compared to the Base Case DCGL for buried pipe (BcDCGLBP) was 0.082. This SOF equates to a dose of 2.052 mrem/yr. This value is the dose assigned to the survey unit based on the average of the systematic measurements adjusted for the dose contribution of elevated areas.
- 2.
SURVEY UNIT DESCRIPTION The Condensate Feed Water and Recirculation system piping consisted of three (3) lengths of 20 outside diameter (OD) pipe totaling 468 feet in length.
- 3.
CLASSIFICATION BASIS Survey unit S3-00101A was classified in accordance with ZionSolutions procedure ZS-LT-300-001-002.
Based on information from the Zion Station Historical Site Assessment (Reference 6), the initial classification for this survey unit was Class 3.
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During the FSS of the Turbine Building and Crib House basements, radiological surveys were performed in several sections of Service Water Piping associated with the Circulating Water Intake Pipe and Circulating Water Discharge Tunnels. No plant-derived radionuclides were positively identified during the performance of these surveys. Radiological surveys were also performed to support the segmentation and removal of Condensate and Service Water pipe that was connected to the sections of end-state buried pipe. No gross radioactivity greater than background was identified during the scanning performed as part of those surveys.
Based upon completion of Survey Unit Classification Basis for final classification, which included a review of the historical information, the results of the survey data and, completion of a final Survey Unit Classification Worksheet, it was concluded that there was a low probability for the presence of residual radioactivity in these pipes in concentrations greater than 50% of the OpDCGLs, justifying a FSS unit classification of Class 3.
- 4.
DATA QUALITY OBJECTIVES FSS planning and design hinges on coherence with the Data Quality Objective (DQO) process to ensure, through compliance with explicitly defined inputs and boundaries, that the primary objective of the survey is satisfied. The DQO process is described in the ZSRP LTP in accordance with MARSSIM. The appropriate design for a given survey will be developed using the DQO process as outlined in Appendix D of MARSSIM.
The DQO process incorporated hypothesis testing and probabilistic sampling distributions to control decision errors during data analysis. Hypothesis testing is a process based on the scientific method that compares a baseline condition to an alternate condition. The baseline condition is technically known as the null hypothesis. Hypothesis testing rests on the premise that the null hypothesis is true and that sufficient evidence must be provided for rejection. In designing the survey plan, the null hypothesis (i.e., underlying assumption) was that residual activity in the survey unit exceeded the release criteria. Rejection of the null hypothesis would indicate that residual activity within the survey unit does not exceed the release criteria.
Therefore, the survey unit would satisfy the primary objective of the FSS sample plan when the null hypothesis is rejected.
The primary objective of the FSS sample plan is to demonstrate that the level of residual radioactivity in survey unit 00101A did not exceed the release criteria specified in the LTP and that the potential dose from residual radioactivity is As Low As Reasonably Achievable (ALARA).
The residual radioactivity in buried piping located below the 588 foot grade that will remain and be subjected to FSS is discussed in LTP Chapter 2, section 2.3.3.7 and TSD 14-016, Description of Embedded Piping, Penetrations, and Buried Pipe to Remain in Zion End State
FSS RELEASE RECORD CONDENSATE FEED WATER SUPPLY AND RECIRCULATION BURIED PIPE SURVEY UNIT 00101A
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(Reference 7). The dose assessment methods and resulting DCGLs for buried piping are described in detail in TSD 14-015, Buried Pipe Dose Modeling & DCGLs (Reference 8) and LTP Chapter 6, section 6.12.
ZionSolutions TSD 11-001, Technical Support Document for Potential Radionuclides of Concern During the Decommissioning of the Zion Station (Reference 9) established the basis for an initial suite of potential Radionuclides of Concern (ROC) for the decommissioning of the Zion Nuclear Power Station (ZNPS). LTP Chapter 2 provides detailed characterization data that described contamination levels in the Containments and Auxiliary Building, which were the primary source of radioactive contaminants. ZionSolutions TSD 14-019, Radionuclides of Concern for Soil and Basement Fill Model Source Terms (Reference 10) evaluates the results of the concrete core analysis data from the Containments and Auxiliary Building and refines the initial suite of potential ROC by evaluating the dose significance of each radionuclide.
The final ROC for the decommissioning of Zion are Co-60, Cs-134 and Cs-137 (as well as Eu-152 and Eu-154 for Containment), which are gamma emitters, Ni-63 and Sr-90 (as well as H-3 which is applicable only to Containment), which are Hard-to-Detect (HTD) radionuclides.
LTP section 5.1 states that HTD concentrations will be inferred using a surrogate approach and the maximum ratios from LTP Chapter 5, Table 5-15 unless area-specific ratios as determined by actual survey data are used in lieu of the maximum ratios.
LTP Chapter 6, section 6.5.2 discusses the process used to derive the ROC for the decommissioning of the ZNPS, including the elimination of insignificant dose contributors from the initial suite consistent with the guidance in Section 3.3 of NUREG-1757. Based upon the analysis of the Auxiliary Building mixture in TSD 14-019, Table 19, it was determined that Co-60, Ni-63, Sr-90, Cs-134 and Cs-137 accounted for 99.5% of all dose in the contaminated concrete mixes. Table 1 presents the ROC for the decommissioning of Auxiliary Building structural surfaces and the normalized mixture fractions based on the radionuclide mixture.
Table 1 - Dose Significant Radionuclides and Mixture Radionuclide
% of Total Activity (normalized)(1)
Co-60 0.92%
Ni-63 23.71%
Sr-90 0.05%
Cs-134 0.01%
Cs-137 75.32%
(1) Based on maximum percent of total activity from Table 20 of TSD 14-019, normalized to one for the dose significant radionuclides.
FSS RELEASE RECORD CONDENSATE FEED WATER SUPPLY AND RECIRCULATION BURIED PIPE SURVEY UNIT 00101A
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At ZNPS, compliance is demonstrated through the summation of dose from four distinct source terms (i.e., basements, soils, buried pipe and groundwater) for the end-state. Each radionuclide-specific BcDCGL is equivalent to the level of residual radioactivity (above background levels) that could, when considered independently, result in a Total Effective Dose Equivalent (TEDE) of 25 mrem per year to an Average Member of the Critical Group (AMCG). To ensure that the summation of dose from each source term is 25 mrem/year or less after all FSS is completed, the BcDCGLs are reduced based on an expected, or a priori, fraction of the 25 mrem/year dose limit from each source term. The reduced DCGLs, or Operational DCGLs can be related to the BcDCGLs as an expected fraction of dose based on an a priori assessment of what the expected dose should be based on the results of site characterization, process knowledge and the extent of planned remediation. The OpDCGL is then used as the DCGL for the FSS design of the survey unit (calculation of surrogate DCGLs, investigations levels, etc.). Details of the OpDCGLs derived for each dose component and the basis for the applied a priori dose fractions are provided in ZionSolutions TSD 17-004, Operational Derived Concentration Guideline Levels for Final Status Survey (Reference 11).
The Base Case and Operational DCGLs for Buried Pipe are listed in Tables 5-9 and 5-10 of the LTP, and are reproduced in the Table 2.
Table 2 - Base Case and Operational DCGLs Radionuclide Base Case Buried Pipe DCGL dpm/100cm2 Operational Buried Pipe DCGL dpm/100cm2 Co-60 2.64E+04 6.76E+03 Ni-63 4.89E+07 1.25E+07 Sr-90 4.50E+04 1.15E+04 Cs-134 4.54E+04 1.16E+04 Cs-137 1.01E+05 2.59E+04
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SURVEY DESIGN The level of effort associated with planning a survey is based on the complexity of the survey and nature of the hazards. Guidance for preparing FSS plans is provided in procedure ZS-LT-300-001-001 Final Status Survey Package Development.
The DQO process determined that Co-60, Ni-63, Sr-90, Cs-134 and Cs-137 would be the ROC in survey unit 00101A. During FSS, concentrations for HTD ROC Ni-63 and Sr-90 were inferred using a surrogate approach. Co-60 is the principle surrogate radionuclide for Ni-63 and Cs-137 is the principle surrogate radionuclide for Sr-90. The mean, maximum and 95% Upper Confidence Level (UCL) of the surrogate ratios for concrete core samples taken in the Auxiliary Building basement were
FSS RELEASE RECORD CONDENSATE FEED WATER SUPPLY AND RECIRCULATION BURIED PIPE SURVEY UNIT 00101A
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calculated in TSD 14-019, and are presented in Table 3. The maximum ratios will be used in the surrogate calculations during this FSS. The results of the surrogate calculations are listed in Table 4.
Table 3 - Surrogate Ratios Ratios Auxiliary Building Mean Max 95%UCL Ni-63/Co-60 44.143 180.450 154.632 Sr-90/Cs-137 0.001 0.002 0.002 Table 4 - Surrogate Base Case and Operational DCGLs Radionuclide Base Case Buried Pipe DCGL dpm/100 cm2 Operational Buried Pipe DCGL dpm/100 cm2 Co-60 2.41E+04 6.16E+03 Cs-134 4.54E+04 1.16E+04 Cs-137 1.01E+05 2.58E+04 An adjusted gross gamma OpDCGL was also calculated by applying the normalized gamma mixture from Table 1 to the surrogate OpDCGL for Co-60, the surrogate OpDCGL for Cs-137 and the OpDCGL for Cs-134 from Table 3. The adjusted gross gamma OpDCGL for buried pipe was 2.49E+04 dpm/100 cm2.
The Condensate Feed Water Supply and Recirculation piping was Class 3 buried pipe.
Consequently, a minimum of 1% to 10% areal surface coverage was required for FSS. For the survey of piping internal surfaces, areal coverage was achieved by the area of detection for each static measurement taken. Scanning, in the traditional sense, is not applicable to the survey of piping internal surfaces. For the survey of these pipes, the pipe detector was calibrated for the specific geometry of the 20-inch OD Condensate pipes. The most likely geometry for activity in this pipe is for the activity to be collected in the bottom of the pipe. To obtain an efficiency for this geometry, a mock-up of the lower half of the inner diameter of this pipe was created. The source was positioned on the bottom of the pipe, which covered 35% of the pipe circumference. The detector was placed on the bottom of the pipe and the calibration readings obtained. This geometry covered a FOV of 5.245 ft2. The surface area of the entire pipe system interior surface was 2,455 ft2; therefore a minimum of forty-seven (47) readings were required to meet an areal surface coverage of 10%.
The survey design required the use of a Ludlum Model 44-162, 3 inch by 3 inch NaI detector to acquire measurements. Background radiation was not subtracted from the measurements. The efficiency for the Model 44-162 detector was determined in the same manner described above.
FSS RELEASE RECORD CONDENSATE FEED WATER SUPPLY AND RECIRCULATION BURIED PIPE SURVEY UNIT 00101A
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To demonstrate compliance with the unrestricted release criteria in FSS unit 00101A, the Sign test was selected as the non-parametric statistical test. The use of the Sign test did not require the selection or use of a background reference area, which simplified survey design and implementation. This approach was conservative since it included background Cs-137 as part of the sample set.
The Elevated Measurement Comparison (EMC) does not apply to this survey unit. At ZSRP, EMC only applies to soils as all other media (i.e., structural surfaces, embedded pipe, buried pipe and penetrations) will be remediated to their applicable BcDCGL.
A Prospective Power Curve was generated using MARSSIM 2000, a software package developed for the implementation of MARSSIM in support of the decommissioning license termination rule (10CFR20, Subpart E). The result of the MARSSIM 2000 computer run showed adequate power for the survey design.
FSS Investigation levels are specified in Table 5-25 of the LTP. If a direct measurement taken in a Class 3 buried pipe exceeded 50% of the OpDCGL, then an investigation was required.
The gross gamma OpDCGL calculated in survey design was 2.49E+04 dpm/100 cm2. An Action Level of 50% of the gross gamma OpDCGL equates to a value of 1.24E+04 dpm/100 cm2.
In compliance with ZS-LT-01, Quality Assurance Project Plan (for Characterization and FSS) (Reference 12), replicate measurements were to be performed on 5% of the static measurement locations.
Table 5 provides a synopsis of the survey design for FSS unit 00101A.
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Table 5 - Synopsis of Survey Design FEATURE DESIGN CRITERIA BASIS Survey Unit Area 2,455 ft2 1.67 feet or 20 in. (OD ) x 468 feet (length) x Number of Static Measurements 47 (based on FOV) 10% areal coverage, Class 3 Measurement Spacing As needed to obtain sufficient measurements for 10% areal coverage 10% areal coverage, Class 3 DCGLs
- Co 6.76E+03 dpm/100 cm2
- Ni 1.25E+07 dpm/100 cm2
- Sr 1.15E+04 dpm/100 cm2
- Cs-134 - 1.16E+04 dpm/100 cm2
HTD ROC Analysis Gross Gamma DCGL adjusted for HTD based on the isotopic mixture LTP 5.7.1.9 Measurement Investigation Level
>0.5 Gross Gamma Operational DCGL (LTP Chapter 5, Table 5-25)
Scan Survey Area Coverage N/A LTP 5.7.1.9 Quality Control (QC)
Replicate measurements will be performed on 5% of the static measurement locations Quality Assurance Program Plan (QAPP)
- 6.
SURVEY IMPLEMENTATION Survey instructions for this FSS were incorporated into and performed in accordance with FSS Sample Plan S3-00101AF Plan 1, which was developed in accordance with ZionSolutions procedure ZS-LT-300-001-001. The FSS unit was inspected and controlled in accordance with ZionSolutions procedure ZS-LT-300-001-003, Isolation and Control for Final Status Survey (Reference 13).
The three (3) pipes (i.e. pipe nos. T-103, T-105 and T-106) that constitute this survey unit, were situated below the level of ground water. Due to constant groundwater intrusion into pipes T-103 and T-106, these pipes were considered as obstructed. In addition, due to their physical configuration and depth, complete removal of pipe sections T-103 and T-106 were also not possible. However, pipe section T-105 was available for removal and the pipe was cut into sections and placed on the ground to the northeast of the Turbine Building. Due to the fact that
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pipe section T-105 contained the same media at the same pressure and temperature as pipe sections T-103 and T-106, the pipe interior of pipe section T-105 was deemed to be radiologically representative of the Condensate system. Consequently, 100% of the interior surfaces of the pipe removed as pipe section T-105 was surveyed to compensate for the pipe that remained obstructed. The pipe was surveyed in sections laying on the ground to the northeast of the Turbine Building and adjacent to the Waste Water Treatment Facility (WWTF). Visual inspections of the piping sections were performed prior to the start of the survey. See Figure 1.
Figure 1 - Visual Inspection of T-105 Piping
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Daily, prior to, and following use, each detector was subjected to an Operational Response Check in accordance with procedure ZS-LT-300-001-006, Radiation Surveys of Pipe Interiors Using Sodium/Cesium Iodide Detectors (Reference 14). The Daily Operational Response Check compared background and source check response data to established values to ensure that the detector was working properly.
The FSS of the T-105 pipe interior surfaces commenced on May 11, 2017 using Ludlum Model 2350-1 #266668 coupled with Ludlum Model 44-162 #PR327894. The detector was transported through the pipe interiors using the 3/4 inch fiber rod. Static measurements were taken at 1-foot intervals throughout the 257 linear feet of piping. This survey covers 1,283.8 ft2, which is approximately 52.2% of the total surface area of piping which measures 2,456.1 ft2. See Figure 2.
FSS RELEASE RECORD CONDENSATE FEED WATER SUPPLY AND RECIRCULATION BURIED PIPE SURVEY UNIT 00101A
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Figure 2 - Survey of T-105 Piping The surveys were completed on May 15, 2017 using the same instrument/detector. A total of 257 measurements were taken. All readings were below the Action Level.
Background Study In August, 2019, a background study was performed on various clean pipe jigs which were transported to the site and placed at the location on the ground where the buried pipe FSS was performed. This area is located adjacent to the now-removed WWTF and northeast of the Turbine Building footprint. The background study was performed to assess the impact of radioactive commodity removal, which was occurring at the time of the FSS on the ambient background at this location. During the time when the pipe surveys were performed in May, 2017, large amounts of known radioactive commodities were removed from the Unit 2 Containment and staged in a tent for eventual loading into railcars; the material was properly shipped and disposed of as radioactive waste. The radioactive material staging and load-out area for the railcars was located approximately 800 feet from the FSS location. An analysis of
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the survey results showed that the background fluctuations did not impact the survey of pipe sections from pipe no.T-105; however, they did impact other similar surveys. Consequently, the results are included here for consistency.
Sample plan number S3-001101A-C was developed and implemented to quantify the background levels associated with the survey of piping at the surface. A section of clean 6-inch diameter piping was staged adjacent to the WWTF and Northeast of the Turbine Building footprint in open land survey unit 12102. A Ludlum Model 44-157 pipe detector, attached to a Ludlum Model 2350 data logger, was inserted approximately two (2) feet into the mock-up pipe and a series of 1-minute measurements were conducted. The results of the background study indicated that the average of the twenty (20) background measurements was 1,752 cpm.
The maximum and minimum values were 1,805 cpm and 1,693 cpm respectively.
The results of the background study are discussed further in section 9 of this report.
- 7.
SURVEY RESULTS The SOF or unity rule is applied to the data used for the survey planning, data evaluation and statistical tests for basement surfaces since multiple radionuclide-specific measurements will be performed or the concentrations inferred based on known relationships. The application of the unity rule serves to normalize the data to allow for an accurate comparison of the various data measurements to the release criteria. When the unity rule is applied, the DCGLW, used for the nonparametric statistical test, becomes one (1). The BcDCGLB are directly analogous to the DCGLW as defined in MARSSIM. The use and application of the unity rule was performed in accordance with section 4.3.3 of MARSSIM.
As described in LTP Chapter 5, section 5.10.3.2, the Sign Test was used to evaluate the measured residual radioactivity against the dose criterion. The OpSOF for each measurement was used as the sum value for the Sign Test. The Sign Test then demonstrated that the mean activity for each ROC was less than the OpDCGLB at a Type I decision error of 0.05.
For buried pipe, areas of elevated activity were defined as any area identified by measurement (systematic or judgmental) that exceeded the OpDCGL but was less than the BcDCGL. Any area that exceeded the BcDCGL would have required remediation. The OpSOF for a systematic or a judgmental measurement/sample(s) could exceed one without remediation as long as the survey unit passed the Sign Test and, the mean OpSOF for the survey unit did not exceed one (1). Once the survey data set passed the Sign Test (using OpDCGLs), then the mean radionuclide activity (pCi/m2) for each ROC from systematic measurements along with any identified elevated areas from systematic and judgmental samples was used with the
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BcDCGLs to perform a mean BcSOFB calculation. The dose from residual radioactivity assigned to the FSS unit is the mean BcSOFB multiplied by 25 mrem/yr.
After completion of the FSS measurements in the pipe, the sample plan was reviewed to confirm the completeness of the survey and the survey data was validated in accordance with procedure ZS-LT-300-001-004, Final Status Survey Data Assessment (Reference 15). Data processing includes converting measurement data into reporting units, validating instrument applicability and sensitivity, calculating relevant statistical quantities, and verifying that all DQO have been met. In accordance with the procedure, a preliminary Data Assessment was prepared.
All FSS measurements were less than 50% of the OpDCGL, meeting the requirement for a Class 3 area. The results of the data assessment for the Condensate Feed Water Supply and Recirculation buried pipe are provided in Attachment 2. A statistical summary of the data is presented in Table 6.
The data collected passed the Sign Test. The result of the Sign Test is provided in Attachment 3.
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Table 6 - Condensate Buried Pipe System - Statistical Quantities Systematic Measurement Population Individual Measurement Metrics Total Number of Systematic Measurements =
257 Number of Quality Control Measurements =
18 Number of Judgmental/Investigational Measurements =
0 Total Number of Measurements =
275 Mean Systematic Measurement OpSOF = 0.320 Max Individual Systematic Measurement OpSOF = 0.493 Number of Systematic Measurements with OpSOF >0.5 =
0 Statistical Quantities - Systematic Measurement Population ROC MEAN MEDIAN MAX MIN STD. DEV.
BcDCGL BcSOF Avg Dose per ROC (pCi/m2)
(pCi/m2)
(pCi/m2)
(pCi/m2)
(pCi/m2)
(pCi/m2)
Gross Gamma 7.95E+03 7.77E+03 1.22E+04 6.01E+03 1.07E+03 N/A N/A N/A Co-60 9.59E+01 9.38E+01 1.48E+02 7.25E+01 1.29E+01 2.64E+04 0.004 0.091 Ni-63 (1) 1.73E+04 1.69E+04 2.66E+04 1.31E+04 2.33E+03 4.89E+07 0.000 0.009 Sr-90 (1) 1.57E+01 1.54E+01 2.42E+01 1.19E+01 2.12E+00 4.50E+04 0.000 0.009 Cs-134 1.04E+00 1.02E+00 1.60E+00 7.88E-01 1.41E-01 4.54E+04 0.000 0.001 Cs-137 7.85E+03 7.68E+03 1.21E+04 5.93E+03 1.06E+03 1.01E+05 0.078 1.943 (1) Concentrations for Ni-63 and Sr-90 are inferred MEAN BcSOF ASSIGNED TO SURVEY UNIT (SYSTEMATIC AVG.)
= 0.082 DOSE ASSIGNED TO SURVEY UNIT (SYSTEMATIC AVG.)
= 2.052 mrem/yr.
FSS RELEASE RECORD CONDENSATE FEED WATER SUPPLY AND RECIRCULATION BURIED PIPE SURVEY UNIT 00101A
[20]
- 8.
QUALITY CONTROL In compliance with ZS-LT-01, replicate measurements were performed on 5% of the survey locations chosen at random. A total of eighteen (18) replicate measurements were taken at random locations. Using the acceptance criteria specified in section 4.1.2 of ZS-LT-01, there was acceptable agreement between the replicate readings and the original readings. Refer to of this document for quality control analysis results.
- 9.
INVESTIGATIONS AND RESULTS As all measurements in the accessible pipe interior surface area were below an OpSOF of 0.5, no investigations were required or performed.
License Termination Plan Chapter 5, section 5.6.4.2 states, The Sign Test is the most appropriate test for FSS at Zion, as background is expected to constitute a small fraction of the DCGLw based on the results of characterization surveys. Consequently, the Sign Test will be applied when demonstrating compliance with the unrestricted release criteria without subtracting background. During the performance of data assessment on the survey data taken in survey unit 00101A, the cognizant Radiological Engineer (RE) postulated that the elevated activity detected by the FSS measurements was not due to residual radioactivity inside the pipe but rather from increases in ambient background due to the storage, movement, packaging and shipment of radioactive waste from the Unit 2 Containment and the Auxiliary Building in an adjacent survey unit. A review of the survey data shows that the measurements taken inside of the pipe were consistent for the 1stnine (9) measurements (representing 9 minutes) and then, an approximate 50% increase in activity over the next two (2) measurements (representing 10 minutes). The activity again stayed consistent over the next nineteen (19) measurements (representing 19 minutes), and then decrease again over the next four (4) minutes to the originally observed levels. This occurred several times, indicating the possible movement of a radioactive material package or packages through the area adjacent to where the pipe FSS was performed.
To investigate this possibility, a background study was performed in August of 2019 on clean 6-inch diameter steel pipe jigs transported to and placed at the location on the ground where the buried pipe FSS was performed. This area is located adjacent to the now-removed WWTF and northeast of the Turbine Building footprint. The reason for the delay in performing this study so long after the completion of the FSS of the Condensate Feed Water Supply and Recirculation System was due waiting for potential contributors to background from the area in question. This background study was performed to assess the impact of radioactive commodity removal on the ambient background. During the time when the pipe surveys were performed in May, 2017, large amounts of known radioactive commodities were removed from the Unit 2 Containment and Auxiliary Building and staged in a tent for eventual loading into railcars, and
FSS RELEASE RECORD CONDENSATE FEED WATER SUPPLY AND RECIRCULATION BURIED PIPE SURVEY UNIT 00101A
[21]
proper shipment and disposal as radioactive waste. The radioactive material staging and load-out area for the railcars was located approximately 800 feet from the FSS location.
Sample plan number S3-001101A-C was developed and implemented to quantify the background levels associated with the survey of piping at the surface. A Ludlum Model 44-157 pipe detector, attached to a Ludlum Model 2350 data logger, was inserted approximately two (2) feet into the mock-up pipe and a series of 1-minute measurements were conducted. The results of the background study indicated that the average of the twenty (20) background measurements was 1,752 cpm. The maximum and minimum values were 1,805 cpm and 1,693 cpm respectively.
- 10.
REMEDIATION AND RESULTS No remediation was performed in this piping survey unit.
- 11.
CHANGES FROM THE SURVEY PLAN There were no changes to the survey plan.
- 12.
DATA QUALITY ASSESSMENT In accordance with procedure ZS-LT-300-001-004, the DQOs, sample design, and data were reviewed for completeness, accuracy, and consistency. Documentation was complete and legible. The FSS unit was properly classified as Class 3. All measurement results were individually reviewed and validated. The number of measurements was sufficient to meet 10%
areal surface coverage of accessible surfaces. The instrumentation used to perform the FSS was in calibration, capable of detecting the activity with an adequate minimum detectable concentration and successfully response checked prior to and following use. An adequate number of replicate measurements were taken and the results meet the acceptance criteria as specified in the QAPP.
- 13.
ANOMALIES No anomalies were observed during the performance or analyses of the survey.
- 14.
CONCLUSION Two hundred fifty-seven (257) one-minute static measurements were taken in the Condensate Feed Water Supply and Recirculation buried piping. The three (3) pipes (pipe nos., T-103, T-105 and T-106) that constitute this survey unit were situated below the level of ground water.
Due to their physical configuration and the depths of the piping, as well as constant groundwater intrusion into pipes T-103 and T-106, these pipes were considered obstructed and were not physically surveyed. Pipe section T-105 was available for survey. Pipe section
FSS RELEASE RECORD CONDENSATE FEED WATER SUPPLY AND RECIRCULATION BURIED PIPE SURVEY UNIT 00101A
[22]
T-105 contained the same media at the same pressure and temperature as pipe sections T-103 and T-106, and was deemed to be radiologically representative. Consequently, 100% of the interior surfaces of pipe section T-105 were surveyed to compensate for the pipe that remained obstructed. The pipe was surveyed in sections on the ground to the northeast of the Turbine Building and adjacent to the WWTF. The 257 measurements represented approximately 55%
of the total area of the three (3) pipe sections, therefore the requirement for 10% areal surface coverage was met.
All FSS measurements resulted in an OpSOF below 0.5. The average OpSOF for the survey unit was 0.320. The survey data set passed the Sign Test, and the Null Hypothesis was rejected. The requirements for a Class 3 survey unit have been met.
The mean BcSOF for this survey unit is 0.082. The dose contribution from survey unit 00101A, Condensate Feed Water Supply and Recirculation buried piping, is 2.052 mrem/yr TEDE, based on the average concentration of the ROC in samples used for non-parametric statistical sampling.
Survey unit 00101A consisting of Condensate Feed Water Supply and Recirculation buried (pipe nos., T-103, T-105 and T-106) are acceptable for unrestricted release.
- 15.
REFERENCES
- 1.
ZionSolutions procedure ZS-LT-300-001-005, Final Status Survey Data Reporting
- 2.
Zion Station Restoration Project License Termination Plan
- 3.
ZionSolutions procedure ZS-LT-300-001-001, Final Status Survey Package Development
- 4.
NUREG-1575, Multi-Agency Radiation Survey and Site Investigation Manual
- 5.
ZionSolutions procedure ZS-LT-300-001-002, Survey Unit Classification
- 6.
Zion Station Historical Site Assessment
- 7.
ZionSolutions TSD 14-016, Description of Embedded Piping, Penetrations, and Buried Piping to Remain in Zion End State
- 8.
ZionSolutions TSD 14-015, Buried Pipe Dose Modeling and DCGLs
- 9.
ZionSolutions TSD 11-001, Technical Support Document for Potential Radionuclides of Concern During the Decommissioning of the Zion Station
- 10.
ZionSolutions TSD 14-019, Radionuclides of Concern for Soil and Basement Fill Model Source Terms
FSS RELEASE RECORD CONDENSATE FEED WATER SUPPLY AND RECIRCULATION BURIED PIPE SURVEY UNIT 00101A
[23]
- 11.
ZionSolutions TSD 17-004, Operational Derived Concentration Guideline Levels for Final Status Survey
- 12.
ZionSolutions procedure ZS-LT-01, Quality Assurance Project Plan (for Characterization and FSS)
- 13.
ZionSolutions procedure ZS-LT-300-001-003, Isolation and Control for Final Status Survey
- 14.
ZionSolutions procedure ZS-LT-300-001-006, Radiation Surveys of Pipe Interiors Using Sodium/Cesium Iodide Detectors
- 15.
ZionSolutions procedure ZS-LT-300-001-004, Final Status Survey Data Assessment
- 16.
ATTACHMENTS
- 1. - Condensate Feedwater Pumps Penetration Diagram
- 2. - Measurement Data
- 3. - Sign Test
- 4. - QC Data
[24]
ATTACHMENT 1 CONDENSATE FEEDWATER PUMPS PENETRATION DIAGRAM
FSS RELEASE RECORD CONDENSATE FEED WATER SUPPLY AND RECIRCULATION BURIED PIPE SURVEY UNIT 00101A
[25]
Condensate Feedwater Pumps Penetration Exiting Turbine Building (Reproduced from TSD 14-016 FIGURE 38)
[26]
ATTACHMENT 2 MEASUREMENT DATA
FSS RELEASE RECORD CONDENSATE FEED WATER SUPPLY AND RECIRCULATION BURIED PIPE SURVEY UNIT 00101A
[27]
Measurement Results T-105 Condensate Pipe Survey PIPE FEET INTO PIPE POSITION GROSS GAMMA Co-60 Ni-63 Sr-90 Cs-134 Cs-137 OpSOF (dpm/100cm2)
(dpm/100cm2)
(dpm/100cm2)
(dpm/100cm2)
(dpm/100cm2)
(dpm/100cm2) 1 Zero 0
1.21E+04 1.46E+02 2.63E+04 2.38E+01 1.58E+00 1.19E+04 0.486 1
1 1
7.69E+03 9.28E+01 1.67E+04 1.52E+01 1.01E+00 7.60E+03 0.310 1
2 2
7.49E+03 9.03E+01 1.63E+04 1.48E+01 9.82E-01 7.40E+03 0.302 1
3 3
7.33E+03 8.85E+01 1.60E+04 1.45E+01 9.62E-01 7.24E+03 0.295 1
4 4
6.96E+03 8.40E+01 1.52E+04 1.38E+01 9.13E-01 6.88E+03 0.280 1
5 5
6.94E+03 8.37E+01 1.51E+04 1.37E+01 9.10E-01 6.85E+03 0.279 1
6 6
6.93E+03 8.36E+01 1.51E+04 1.37E+01 9.09E-01 6.84E+03 0.279 1
7 7
7.32E+03 8.83E+01 1.59E+04 1.45E+01 9.60E-01 7.23E+03 0.295 1
8 8
7.27E+03 8.77E+01 1.58E+04 1.44E+01 9.53E-01 7.18E+03 0.293 1
9 9
7.43E+03 8.97E+01 1.62E+04 1.47E+01 9.74E-01 7.34E+03 0.299 1
10 10 7.44E+03 8.98E+01 1.62E+04 1.47E+01 9.76E-01 7.35E+03 0.300 1
11 11 7.42E+03 8.96E+01 1.62E+04 1.47E+01 9.74E-01 7.33E+03 0.299 1
13 12 7.40E+03 8.93E+01 1.61E+04 1.46E+01 9.71E-01 7.31E+03 0.298 1
14 13 7.64E+03 9.22E+01 1.66E+04 1.51E+01 1.00E+00 7.55E+03 0.308 2
Zero 0
1.10E+04 1.33E+02 2.40E+04 2.18E+01 1.44E+00 1.09E+04 0.444 2
1 1
6.68E+03 8.06E+01 1.45E+04 1.32E+01 8.76E-01 6.60E+03 0.269 2
2 2
6.62E+03 7.99E+01 1.44E+04 1.31E+01 8.68E-01 6.54E+03 0.267 2
3 3
6.86E+03 8.27E+01 1.49E+04 1.35E+01 8.99E-01 6.77E+03 0.276 2
4 4
6.76E+03 8.16E+01 1.47E+04 1.34E+01 8.87E-01 6.68E+03 0.272 2
5 5
6.49E+03 7.83E+01 1.41E+04 1.28E+01 8.51E-01 6.41E+03 0.261 2
6 6
6.57E+03 7.93E+01 1.43E+04 1.30E+01 8.62E-01 6.49E+03 0.265 2
7 7
6.42E+03 7.75E+01 1.40E+04 1.27E+01 8.42E-01 6.34E+03 0.259 2
8 8
6.52E+03 7.86E+01 1.42E+04 1.29E+01 8.55E-01 6.44E+03 0.263 2
9 9
6.58E+03 7.94E+01 1.43E+04 1.30E+01 8.63E-01 6.50E+03 0.265 2
10 10 6.58E+03 7.94E+01 1.43E+04 1.30E+01 8.63E-01 6.50E+03 0.265 2
11 11 6.50E+03 7.84E+01 1.41E+04 1.28E+01 8.52E-01 6.42E+03 0.262
FSS RELEASE RECORD CONDENSATE FEED WATER SUPPLY AND RECIRCULATION BURIED PIPE SURVEY UNIT 00101A
[28]
Measurement Results T-105 Condensate Pipe Survey (continued)
PIPE FEET INTO PIPE POSITION GROSS GAMMA Co-60 Ni-63 Sr-90 Cs-134 Cs-137 OpSOF (dpm/100cm2)
(dpm/100cm2)
(dpm/100cm2)
(dpm/100cm2)
(dpm/100cm2)
(dpm/100cm2) 2 12 12 6.70E+03 8.08E+01 1.46E+04 1.32E+01 8.79E-01 6.62E+03 0.270 2
13 13 6.53E+03 7.88E+01 1.42E+04 1.29E+01 8.57E-01 6.46E+03 0.263 2
14 14 6.74E+03 8.14E+01 1.47E+04 1.33E+01 8.84E-01 6.66E+03 0.272 2
15 15 6.94E+03 8.37E+01 1.51E+04 1.37E+01 9.10E-01 6.86E+03 0.280 2
16 16 7.52E+03 9.08E+01 1.64E+04 1.49E+01 9.87E-01 7.43E+03 0.303 2
18 17 8.64E+03 1.04E+02 1.88E+04 1.71E+01 1.13E+00 8.53E+03 0.348 2
19 18 9.04E+03 1.09E+02 1.97E+04 1.79E+01 1.19E+00 8.93E+03 0.364 2
20 19 8.57E+03 1.03E+02 1.87E+04 1.69E+01 1.12E+00 8.46E+03 0.345 3
Zero 0
1.14E+04 1.38E+02 2.48E+04 2.25E+01 1.50E+00 1.13E+04 0.459 3
1 1
6.45E+03 7.78E+01 1.40E+04 1.27E+01 8.46E-01 6.37E+03 0.260 3
2 2
7.55E+03 9.11E+01 1.64E+04 1.49E+01 9.90E-01 7.45E+03 0.304 3
3 3
7.18E+03 8.66E+01 1.56E+04 1.42E+01 9.42E-01 7.09E+03 0.289 3
4 4
6.81E+03 8.22E+01 1.48E+04 1.35E+01 8.93E-01 6.73E+03 0.274 3
5 5
6.26E+03 7.55E+01 1.36E+04 1.24E+01 8.20E-01 6.18E+03 0.252 3
6 6
6.35E+03 7.66E+01 1.38E+04 1.25E+01 8.33E-01 6.27E+03 0.256 3
7 7
6.45E+03 7.78E+01 1.40E+04 1.27E+01 8.46E-01 6.37E+03 0.260 3
8 8
6.01E+03 7.25E+01 1.31E+04 1.19E+01 7.88E-01 5.93E+03 0.242 3
9 9
6.31E+03 7.61E+01 1.37E+04 1.25E+01 8.27E-01 6.23E+03 0.254 3
10 10 6.54E+03 7.90E+01 1.42E+04 1.29E+01 8.58E-01 6.46E+03 0.264 3
12 11 6.24E+03 7.53E+01 1.36E+04 1.23E+01 8.18E-01 6.16E+03 0.251 3
13 12 6.80E+03 8.21E+01 1.48E+04 1.34E+01 8.92E-01 6.72E+03 0.274 3
14 13 6.73E+03 8.12E+01 1.46E+04 1.33E+01 8.82E-01 6.64E+03 0.271 4
Zero 0
6.77E+03 8.17E+01 1.47E+04 1.34E+01 8.88E-01 6.69E+03 0.273 4
1 1
6.88E+03 8.30E+01 1.50E+04 1.36E+01 9.02E-01 6.79E+03 0.277 4
2 2
7.38E+03 8.91E+01 1.61E+04 1.46E+01 9.68E-01 7.29E+03 0.297 4
3 3
7.93E+03 9.57E+01 1.73E+04 1.57E+01 1.04E+00 7.83E+03 0.319
FSS RELEASE RECORD CONDENSATE FEED WATER SUPPLY AND RECIRCULATION BURIED PIPE SURVEY UNIT 00101A
[29]
Measurement Results T-105 Condensate Pipe Survey (continued)
PIPE FEET INTO PIPE POSITION GROSS GAMMA Co-60 Ni-63 Sr-90 Cs-134 Cs-137 OpSOF (dpm/100cm2)
(dpm/100cm2)
(dpm/100cm2)
(dpm/100cm2)
(dpm/100cm2)
(dpm/100cm2) 4 5
4 8.74E+03 1.05E+02 1.90E+04 1.73E+01 1.15E+00 8.64E+03 0.352 5
Zero 0
1.22E+04 1.48E+02 2.66E+04 2.42E+01 1.60E+00 1.21E+04 0.493 5
1 1
7.44E+03 8.97E+01 1.62E+04 1.47E+01 9.75E-01 7.35E+03 0.300 5
2 2
7.19E+03 8.67E+01 1.57E+04 1.42E+01 9.43E-01 7.10E+03 0.290 5
3 3
7.35E+03 8.87E+01 1.60E+04 1.45E+01 9.64E-01 7.26E+03 0.296 5
4 4
7.16E+03 8.64E+01 1.56E+04 1.41E+01 9.39E-01 7.07E+03 0.288 5
5 5
7.24E+03 8.74E+01 1.58E+04 1.43E+01 9.50E-01 7.16E+03 0.292 5
6 6
7.32E+03 8.83E+01 1.59E+04 1.45E+01 9.60E-01 7.23E+03 0.295 5
7 7
7.27E+03 8.77E+01 1.58E+04 1.44E+01 9.53E-01 7.18E+03 0.293 5
8 8
7.56E+03 9.12E+01 1.65E+04 1.49E+01 9.91E-01 7.47E+03 0.304 5
9 9
7.29E+03 8.79E+01 1.59E+04 1.44E+01 9.56E-01 7.20E+03 0.294 5
10 10 7.29E+03 8.80E+01 1.59E+04 1.44E+01 9.56E-01 7.20E+03 0.294 5
11 11 7.63E+03 9.21E+01 1.66E+04 1.51E+01 1.00E+00 7.54E+03 0.307 5
13 12 7.75E+03 9.35E+01 1.69E+04 1.53E+01 1.02E+00 7.66E+03 0.312 5
14 13 7.77E+03 9.37E+01 1.69E+04 1.53E+01 1.02E+00 7.67E+03 0.313 5
15 14 7.78E+03 9.38E+01 1.69E+04 1.54E+01 1.02E+00 7.68E+03 0.313 5
16 15 7.83E+03 9.44E+01 1.70E+04 1.55E+01 1.03E+00 7.73E+03 0.315 5
17 16 7.93E+03 9.57E+01 1.73E+04 1.57E+01 1.04E+00 7.83E+03 0.319 5
18 17 8.33E+03 1.00E+02 1.81E+04 1.65E+01 1.09E+00 8.23E+03 0.335 5
19 18 9.38E+03 1.13E+02 2.04E+04 1.85E+01 1.23E+00 9.26E+03 0.378 6
Zero 0
1.18E+04 1.43E+02 2.58E+04 2.34E+01 1.55E+00 1.17E+04 0.477 6
1 1
8.14E+03 9.82E+01 1.77E+04 1.61E+01 1.07E+00 8.04E+03 0.328 6
2 2
8.32E+03 1.00E+02 1.81E+04 1.64E+01 1.09E+00 8.21E+03 0.335 6
3 3
8.60E+03 1.04E+02 1.87E+04 1.70E+01 1.13E+00 8.49E+03 0.346 6
4 4
8.62E+03 1.04E+02 1.88E+04 1.70E+01 1.13E+00 8.52E+03 0.347 6
6 5
8.28E+03 9.99E+01 1.80E+04 1.64E+01 1.09E+00 8.18E+03 0.334
FSS RELEASE RECORD CONDENSATE FEED WATER SUPPLY AND RECIRCULATION BURIED PIPE SURVEY UNIT 00101A
[30]
Measurement Results T-105 Condensate Pipe Survey (continued)
PIPE FEET INTO PIPE POSITION GROSS GAMMA Co-60 Ni-63 Sr-90 Cs-134 Cs-137 OpSOF (dpm/100cm2)
(dpm/100cm2)
(dpm/100cm2)
(dpm/100cm2)
(dpm/100cm2)
(dpm/100cm2) 6 7
6 8.39E+03 1.01E+02 1.83E+04 1.66E+01 1.10E+00 8.29E+03 0.338 6
8 7
8.15E+03 9.83E+01 1.77E+04 1.61E+01 1.07E+00 8.05E+03 0.328 6
9 8
8.57E+03 1.03E+02 1.87E+04 1.69E+01 1.12E+00 8.46E+03 0.345 7
Zero 0
1.16E+04 1.41E+02 2.54E+04 2.30E+01 1.53E+00 1.15E+04 0.469 7
1 1
8.30E+03 1.00E+02 1.81E+04 1.64E+01 1.09E+00 8.20E+03 0.334 7
2 2
8.19E+03 9.89E+01 1.78E+04 1.62E+01 1.07E+00 8.10E+03 0.330 7
3 3
8.06E+03 9.72E+01 1.75E+04 1.59E+01 1.06E+00 7.96E+03 0.325 7
4 4
8.24E+03 9.94E+01 1.79E+04 1.63E+01 1.08E+00 8.14E+03 0.332 7
5 5
8.18E+03 9.87E+01 1.78E+04 1.62E+01 1.07E+00 8.08E+03 0.330 7
7 6
8.05E+03 9.72E+01 1.75E+04 1.59E+01 1.06E+00 7.96E+03 0.324 7
8 7
8.22E+03 9.92E+01 1.79E+04 1.62E+01 1.08E+00 8.12E+03 0.331 7
9 8
8.48E+03 1.02E+02 1.85E+04 1.68E+01 1.11E+00 8.38E+03 0.342 7
10 9
8.35E+03 1.01E+02 1.82E+04 1.65E+01 1.10E+00 8.25E+03 0.337 7
11 10 9.10E+03 1.10E+02 1.98E+04 1.80E+01 1.19E+00 8.99E+03 0.366 8
Zero 0
1.09E+04 1.32E+02 2.37E+04 2.15E+01 1.43E+00 1.08E+04 0.439 8
1 1
7.83E+03 9.45E+01 1.71E+04 1.55E+01 1.03E+00 7.74E+03 0.316 8
2 2
8.01E+03 9.67E+01 1.75E+04 1.58E+01 1.05E+00 7.92E+03 0.323 8
3 3
7.95E+03 9.59E+01 1.73E+04 1.57E+01 1.04E+00 7.85E+03 0.320 8
4 4
7.88E+03 9.51E+01 1.72E+04 1.56E+01 1.03E+00 7.79E+03 0.318 8
5 5
7.67E+03 9.26E+01 1.67E+04 1.52E+01 1.01E+00 7.58E+03 0.309 8
6 6
7.87E+03 9.50E+01 1.71E+04 1.56E+01 1.03E+00 7.78E+03 0.317 8
7 7
7.93E+03 9.57E+01 1.73E+04 1.57E+01 1.04E+00 7.83E+03 0.319 8
8 8
7.89E+03 9.53E+01 1.72E+04 1.56E+01 1.04E+00 7.80E+03 0.318 8
9 9
7.90E+03 9.54E+01 1.72E+04 1.56E+01 1.04E+00 7.81E+03 0.318 8
10 10 7.92E+03 9.55E+01 1.72E+04 1.56E+01 1.04E+00 7.82E+03 0.319 8
12 11 7.77E+03 9.38E+01 1.69E+04 1.54E+01 1.02E+00 7.68E+03 0.313
FSS RELEASE RECORD CONDENSATE FEED WATER SUPPLY AND RECIRCULATION BURIED PIPE SURVEY UNIT 00101A
[31]
Measurement Results T-105 Condensate Pipe Survey (continued)
PIPE FEET INTO PIPE POSITION GROSS GAMMA Co-60 Ni-63 Sr-90 Cs-134 Cs-137 OpSOF (dpm/100cm2)
(dpm/100cm2)
(dpm/100cm2)
(dpm/100cm2)
(dpm/100cm2)
(dpm/100cm2) 8 13 12 7.73E+03 9.33E+01 1.68E+04 1.53E+01 1.01E+00 7.64E+03 0.311 8
14 13 7.63E+03 9.21E+01 1.66E+04 1.51E+01 1.00E+00 7.54E+03 0.307 8
15 14 7.47E+03 9.02E+01 1.63E+04 1.48E+01 9.80E-01 7.38E+03 0.301 8
16 15 7.68E+03 9.27E+01 1.67E+04 1.52E+01 1.01E+00 7.59E+03 0.310 8
17 16 7.61E+03 9.19E+01 1.66E+04 1.50E+01 9.99E-01 7.52E+03 0.307 8
18 17 7.80E+03 9.41E+01 1.70E+04 1.54E+01 1.02E+00 7.70E+03 0.314 8
19 18 7.73E+03 9.33E+01 1.68E+04 1.53E+01 1.01E+00 7.63E+03 0.311 8
20 19 7.91E+03 9.55E+01 1.72E+04 1.56E+01 1.04E+00 7.81E+03 0.319 8
21 20 7.71E+03 9.31E+01 1.68E+04 1.52E+01 1.01E+00 7.62E+03 0.311 8
22 21 7.68E+03 9.26E+01 1.67E+04 1.52E+01 1.01E+00 7.58E+03 0.309 8
23 22 7.68E+03 9.26E+01 1.67E+04 1.52E+01 1.01E+00 7.58E+03 0.309 8
24 23 7.69E+03 9.28E+01 1.67E+04 1.52E+01 1.01E+00 7.60E+03 0.310 8
26 24 7.73E+03 9.33E+01 1.68E+04 1.53E+01 1.01E+00 7.64E+03 0.312 8
27 25 7.94E+03 9.57E+01 1.73E+04 1.57E+01 1.04E+00 7.84E+03 0.320 8
28 26 7.67E+03 9.25E+01 1.67E+04 1.52E+01 1.01E+00 7.58E+03 0.309 8
29 27 7.94E+03 9.58E+01 1.73E+04 1.57E+01 1.04E+00 7.84E+03 0.320 8
30 28 7.98E+03 9.63E+01 1.74E+04 1.58E+01 1.05E+00 7.88E+03 0.321 9
Zero 0
1.22E+04 1.48E+02 2.66E+04 2.42E+01 1.60E+00 1.21E+04 0.493 9
1 1
8.21E+03 9.91E+01 1.79E+04 1.62E+01 1.08E+00 8.11E+03 0.331 9
2 2
8.24E+03 9.94E+01 1.79E+04 1.63E+01 1.08E+00 8.14E+03 0.332 9
3 3
8.54E+03 1.03E+02 1.86E+04 1.69E+01 1.12E+00 8.44E+03 0.344 9
4 4
9.71E+03 1.17E+02 2.11E+04 1.92E+01 1.27E+00 9.59E+03 0.391 9
5 5
1.04E+04 1.25E+02 2.26E+04 2.05E+01 1.36E+00 1.02E+04 0.417 9
6 6
1.04E+04 1.26E+02 2.27E+04 2.06E+01 1.37E+00 1.03E+04 0.420 9
7 7
9.86E+03 1.19E+02 2.15E+04 1.95E+01 1.29E+00 9.74E+03 0.397 9
8 8
9.49E+03 1.15E+02 2.07E+04 1.88E+01 1.24E+00 9.38E+03 0.382
FSS RELEASE RECORD CONDENSATE FEED WATER SUPPLY AND RECIRCULATION BURIED PIPE SURVEY UNIT 00101A
[32]
Measurement Results T-105 Condensate Pipe Survey (continued)
PIPE FEET INTO PIPE POSITION GROSS GAMMA Co-60 Ni-63 Sr-90 Cs-134 Cs-137 OpSOF (dpm/100cm2)
(dpm/100cm2)
(dpm/100cm2)
(dpm/100cm2)
(dpm/100cm2)
(dpm/100cm2) 9 9
9 9.32E+03 1.12E+02 2.03E+04 1.84E+01 1.22E+00 9.20E+03 0.375 9
10 10 9.00E+03 1.09E+02 1.96E+04 1.78E+01 1.18E+00 8.89E+03 0.363 9
11 11 8.68E+03 1.05E+02 1.89E+04 1.71E+01 1.14E+00 8.57E+03 0.350 9
12 12 8.62E+03 1.04E+02 1.88E+04 1.70E+01 1.13E+00 8.51E+03 0.347 9
14 13 8.73E+03 1.05E+02 1.90E+04 1.72E+01 1.14E+00 8.62E+03 0.352 9
15 14 8.71E+03 1.05E+02 1.90E+04 1.72E+01 1.14E+00 8.60E+03 0.351 9
16 15 8.60E+03 1.04E+02 1.87E+04 1.70E+01 1.13E+00 8.50E+03 0.346 9
17 16 8.79E+03 1.06E+02 1.91E+04 1.74E+01 1.15E+00 8.68E+03 0.354 9
18 17 8.71E+03 1.05E+02 1.90E+04 1.72E+01 1.14E+00 8.60E+03 0.351 9
19 18 8.91E+03 1.08E+02 1.94E+04 1.76E+01 1.17E+00 8.80E+03 0.359 9
20 19 8.79E+03 1.06E+02 1.91E+04 1.74E+01 1.15E+00 8.69E+03 0.354 9
21 20 8.91E+03 1.08E+02 1.94E+04 1.76E+01 1.17E+00 8.81E+03 0.359 9
22 21 8.85E+03 1.07E+02 1.93E+04 1.75E+01 1.16E+00 8.74E+03 0.356 9
23 22 8.78E+03 1.06E+02 1.91E+04 1.73E+01 1.15E+00 8.67E+03 0.354 9
24 23 8.52E+03 1.03E+02 1.86E+04 1.68E+01 1.12E+00 8.42E+03 0.343 9
25 24 8.44E+03 1.02E+02 1.84E+04 1.67E+01 1.11E+00 8.34E+03 0.340 9
27 25 8.82E+03 1.06E+02 1.92E+04 1.74E+01 1.16E+00 8.71E+03 0.355 9
28 26 8.23E+03 9.93E+01 1.79E+04 1.63E+01 1.08E+00 8.13E+03 0.332 9
29 27 8.19E+03 9.88E+01 1.78E+04 1.62E+01 1.07E+00 8.09E+03 0.330 9
30 28 9.01E+03 1.09E+02 1.96E+04 1.78E+01 1.18E+00 8.90E+03 0.363 9
31 29 9.27E+03 1.12E+02 2.02E+04 1.83E+01 1.22E+00 9.15E+03 0.373 9
32 30 7.29E+03 8.79E+01 1.59E+04 1.44E+01 9.55E-01 7.20E+03 0.293 10 Zero 0
1.17E+04 1.41E+02 2.55E+04 2.31E+01 1.54E+00 1.16E+04 0.472 10 1
1 7.83E+03 9.45E+01 1.70E+04 1.55E+01 1.03E+00 7.74E+03 0.315 10 2
2 8.02E+03 9.67E+01 1.75E+04 1.58E+01 1.05E+00 7.92E+03 0.323 10 3
3 8.69E+03 1.05E+02 1.89E+04 1.72E+01 1.14E+00 8.58E+03 0.350
FSS RELEASE RECORD CONDENSATE FEED WATER SUPPLY AND RECIRCULATION BURIED PIPE SURVEY UNIT 00101A
[33]
Measurement Results T-105 Condensate Pipe Survey (continued)
PIPE FEET INTO PIPE POSITION GROSS GAMMA Co-60 Ni-63 Sr-90 Cs-134 Cs-137 OpSOF (dpm/100cm2)
(dpm/100cm2)
(dpm/100cm2)
(dpm/100cm2)
(dpm/100cm2)
(dpm/100cm2) 10 4
4 9.04E+03 1.09E+02 1.97E+04 1.79E+01 1.19E+00 8.93E+03 0.364 10 5
5 9.45E+03 1.14E+02 2.06E+04 1.87E+01 1.24E+00 9.33E+03 0.381 10 6
6 9.90E+03 1.19E+02 2.15E+04 1.96E+01 1.30E+00 9.78E+03 0.399 10 7
7 8.86E+03 1.07E+02 1.93E+04 1.75E+01 1.16E+00 8.75E+03 0.357 10 8
8 8.56E+03 1.03E+02 1.86E+04 1.69E+01 1.12E+00 8.46E+03 0.345 10 9
9 8.16E+03 9.85E+01 1.78E+04 1.61E+01 1.07E+00 8.06E+03 0.329 10 10 10 7.90E+03 9.53E+01 1.72E+04 1.56E+01 1.04E+00 7.80E+03 0.318 10 12 11 7.82E+03 9.44E+01 1.70E+04 1.55E+01 1.03E+00 7.73E+03 0.315 10 13 12 7.91E+03 9.54E+01 1.72E+04 1.56E+01 1.04E+00 7.81E+03 0.318 10 14 13 7.79E+03 9.40E+01 1.70E+04 1.54E+01 1.02E+00 7.70E+03 0.314 10 15 14 7.77E+03 9.37E+01 1.69E+04 1.53E+01 1.02E+00 7.67E+03 0.313 10 16 15 7.85E+03 9.47E+01 1.71E+04 1.55E+01 1.03E+00 7.75E+03 0.316 10 17 16 7.53E+03 9.08E+01 1.64E+04 1.49E+01 9.87E-01 7.44E+03 0.303 10 18 17 7.67E+03 9.25E+01 1.67E+04 1.52E+01 1.01E+00 7.58E+03 0.309 10 19 18 7.64E+03 9.22E+01 1.66E+04 1.51E+01 1.00E+00 7.55E+03 0.308 10 21 19 7.84E+03 9.46E+01 1.71E+04 1.55E+01 1.03E+00 7.75E+03 0.316 10 22 20 7.82E+03 9.44E+01 1.70E+04 1.55E+01 1.03E+00 7.73E+03 0.315 10 23 21 8.28E+03 9.99E+01 1.80E+04 1.64E+01 1.09E+00 8.18E+03 0.334 11 Zero 0
1.09E+04 1.31E+02 2.37E+04 2.15E+01 1.43E+00 1.07E+04 0.438 11 1
1 7.53E+03 9.09E+01 1.64E+04 1.49E+01 9.88E-01 7.44E+03 0.303 11 2
2 7.49E+03 9.04E+01 1.63E+04 1.48E+01 9.82E-01 7.40E+03 0.302 11 3
3 7.87E+03 9.49E+01 1.71E+04 1.55E+01 1.03E+00 7.77E+03 0.317 11 4
4 7.93E+03 9.56E+01 1.73E+04 1.57E+01 1.04E+00 7.83E+03 0.319 11 5
5 7.86E+03 9.48E+01 1.71E+04 1.55E+01 1.03E+00 7.77E+03 0.317 11 6
6 8.01E+03 9.67E+01 1.74E+04 1.58E+01 1.05E+00 7.91E+03 0.323 11 7
7 8.06E+03 9.72E+01 1.75E+04 1.59E+01 1.06E+00 7.96E+03 0.324
FSS RELEASE RECORD CONDENSATE FEED WATER SUPPLY AND RECIRCULATION BURIED PIPE SURVEY UNIT 00101A
[34]
Measurement Results T-105 Condensate Pipe Survey (continued)
PIPE FEET INTO PIPE POSITION GROSS GAMMA Co-60 Ni-63 Sr-90 Cs-134 Cs-137 OpSOF (dpm/100cm2)
(dpm/100cm2)
(dpm/100cm2)
(dpm/100cm2)
(dpm/100cm2)
(dpm/100cm2) 11 8
8 8.03E+03 9.68E+01 1.75E+04 1.59E+01 1.05E+00 7.93E+03 0.323 11 9
9 7.65E+03 9.23E+01 1.67E+04 1.51E+01 1.00E+00 7.56E+03 0.308 11 10 10 7.75E+03 9.35E+01 1.69E+04 1.53E+01 1.02E+00 7.66E+03 0.312 11 11 11 7.83E+03 9.45E+01 1.70E+04 1.55E+01 1.03E+00 7.73E+03 0.315 11 12 12 7.42E+03 8.96E+01 1.62E+04 1.47E+01 9.74E-01 7.33E+03 0.299 11 13 13 7.56E+03 9.12E+01 1.65E+04 1.49E+01 9.91E-01 7.47E+03 0.304 11 14 14 7.46E+03 9.00E+01 1.62E+04 1.47E+01 9.78E-01 7.37E+03 0.300 11 15 15 7.84E+03 9.46E+01 1.71E+04 1.55E+01 1.03E+00 7.74E+03 0.316 11 17 16 7.73E+03 9.33E+01 1.68E+04 1.53E+01 1.01E+00 7.64E+03 0.312 11 18 17 7.67E+03 9.25E+01 1.67E+04 1.51E+01 1.01E+00 7.57E+03 0.309 11 19 18 7.84E+03 9.46E+01 1.71E+04 1.55E+01 1.03E+00 7.74E+03 0.316 11 20 19 7.84E+03 9.46E+01 1.71E+04 1.55E+01 1.03E+00 7.74E+03 0.316 11 21 20 8.14E+03 9.82E+01 1.77E+04 1.61E+01 1.07E+00 8.04E+03 0.328 11 22 21 8.22E+03 9.92E+01 1.79E+04 1.62E+01 1.08E+00 8.12E+03 0.331 11 23 22 8.35E+03 1.01E+02 1.82E+04 1.65E+01 1.10E+00 8.25E+03 0.337 11 24 23 8.12E+03 9.80E+01 1.77E+04 1.60E+01 1.07E+00 8.02E+03 0.327 11 25 24 8.23E+03 9.93E+01 1.79E+04 1.63E+01 1.08E+00 8.13E+03 0.332 11 26 25 8.43E+03 1.02E+02 1.83E+04 1.66E+01 1.11E+00 8.32E+03 0.339 11 28 26 8.13E+03 9.81E+01 1.77E+04 1.61E+01 1.07E+00 8.03E+03 0.327 11 29 27 7.78E+03 9.39E+01 1.69E+04 1.54E+01 1.02E+00 7.69E+03 0.314 11 30 28 7.99E+03 9.64E+01 1.74E+04 1.58E+01 1.05E+00 7.89E+03 0.322 12 Zero 0
1.11E+04 1.34E+02 2.41E+04 2.19E+01 1.45E+00 1.10E+04 0.447 12 1
1 7.21E+03 8.71E+01 1.57E+04 1.43E+01 9.46E-01 7.13E+03 0.291 12 2
2 7.58E+03 9.14E+01 1.65E+04 1.50E+01 9.94E-01 7.49E+03 0.305 12 3
3 7.61E+03 9.18E+01 1.66E+04 1.50E+01 9.98E-01 7.52E+03 0.307 12 4
4 7.73E+03 9.32E+01 1.68E+04 1.53E+01 1.01E+00 7.63E+03 0.311
FSS RELEASE RECORD CONDENSATE FEED WATER SUPPLY AND RECIRCULATION BURIED PIPE SURVEY UNIT 00101A
[35]
Measurement Results T-105 Condensate Pipe Survey (continued)
PIPE FEET INTO PIPE POSITION GROSS GAMMA Co-60 Ni-63 Sr-90 Cs-134 Cs-137 OpSOF (dpm/100cm2)
(dpm/100cm2)
(dpm/100cm2)
(dpm/100cm2)
(dpm/100cm2)
(dpm/100cm2) 12 5
5 7.61E+03 9.18E+01 1.66E+04 1.50E+01 9.98E-01 7.52E+03 0.306 12 6
6 7.56E+03 9.12E+01 1.65E+04 1.49E+01 9.92E-01 7.47E+03 0.305 12 7
7 7.64E+03 9.22E+01 1.66E+04 1.51E+01 1.00E+00 7.55E+03 0.308 12 8
8 7.52E+03 9.07E+01 1.64E+04 1.49E+01 9.86E-01 7.43E+03 0.303 12 9
9 7.53E+03 9.09E+01 1.64E+04 1.49E+01 9.88E-01 7.44E+03 0.303 12 10 10 7.55E+03 9.11E+01 1.64E+04 1.49E+01 9.90E-01 7.46E+03 0.304 12 11 11 7.59E+03 9.16E+01 1.65E+04 1.50E+01 9.95E-01 7.50E+03 0.306 12 12 12 7.48E+03 9.02E+01 1.63E+04 1.48E+01 9.80E-01 7.38E+03 0.301 12 13 13 7.52E+03 9.08E+01 1.64E+04 1.49E+01 9.87E-01 7.43E+03 0.303 12 14 14 7.61E+03 9.18E+01 1.66E+04 1.50E+01 9.98E-01 7.51E+03 0.306 12 15 15 7.61E+03 9.18E+01 1.66E+04 1.50E+01 9.98E-01 7.52E+03 0.307 12 17 16 7.36E+03 8.88E+01 1.60E+04 1.45E+01 9.65E-01 7.27E+03 0.296 12 18 17 7.85E+03 9.47E+01 1.71E+04 1.55E+01 1.03E+00 7.75E+03 0.316 12 19 18 7.44E+03 8.98E+01 1.62E+04 1.47E+01 9.76E-01 7.35E+03 0.300 12 20 19 7.82E+03 9.43E+01 1.70E+04 1.54E+01 1.02E+00 7.72E+03 0.315 12 21 20 7.67E+03 9.26E+01 1.67E+04 1.52E+01 1.01E+00 7.58E+03 0.309 12 22 21 7.77E+03 9.38E+01 1.69E+04 1.54E+01 1.02E+00 7.68E+03 0.313 12 23 22 7.70E+03 9.29E+01 1.68E+04 1.52E+01 1.01E+00 7.61E+03 0.310 12 24 23 7.86E+03 9.48E+01 1.71E+04 1.55E+01 1.03E+00 7.76E+03 0.316 12 25 24 7.88E+03 9.51E+01 1.72E+04 1.56E+01 1.03E+00 7.78E+03 0.317 12 26 25 8.03E+03 9.69E+01 1.75E+04 1.59E+01 1.05E+00 7.94E+03 0.324 12 28 26 7.85E+03 9.48E+01 1.71E+04 1.55E+01 1.03E+00 7.76E+03 0.316 12 29 27 8.04E+03 9.71E+01 1.75E+04 1.59E+01 1.05E+00 7.95E+03 0.324 12 30 28 7.70E+03 9.29E+01 1.68E+04 1.52E+01 1.01E+00 7.61E+03 0.310 12 31 29 7.63E+03 9.21E+01 1.66E+04 1.51E+01 1.00E+00 7.54E+03 0.307 12 32 30 8.02E+03 9.67E+01 1.75E+04 1.58E+01 1.05E+00 7.92E+03 0.323
FSS RELEASE RECORD CONDENSATE FEED WATER SUPPLY AND RECIRCULATION BURIED PIPE SURVEY UNIT 00101A
[36]
Measurement Results T-105 Condensate Pipe Survey (continued)
PIPE FEET INTO PIPE POSITION GROSS GAMMA Co-60 Ni-63 Sr-90 Cs-134 Cs-137 OpSOF (dpm/100cm2)
(dpm/100cm2)
(dpm/100cm2)
(dpm/100cm2)
(dpm/100cm2)
(dpm/100cm2) 12 33 31 9.36E+03 1.13E+02 2.04E+04 1.85E+01 1.23E+00 9.25E+03 0.377 13 Zero 0
9.58E+03 1.16E+02 2.09E+04 1.89E+01 1.26E+00 9.47E+03 0.386 13 1
1 7.03E+03 8.48E+01 1.53E+04 1.39E+01 9.22E-01 6.95E+03 0.283 13 2
2 7.28E+03 8.78E+01 1.59E+04 1.44E+01 9.55E-01 7.19E+03 0.293 13 3
3 7.22E+03 8.71E+01 1.57E+04 1.43E+01 9.47E-01 7.13E+03 0.291 13 4
4 7.14E+03 8.62E+01 1.55E+04 1.41E+01 9.37E-01 7.05E+03 0.288 13 5
5 7.29E+03 8.79E+01 1.59E+04 1.44E+01 9.55E-01 7.20E+03 0.293 13 6
6 7.16E+03 8.64E+01 1.56E+04 1.41E+01 9.39E-01 7.07E+03 0.288 13 7
7 7.26E+03 8.76E+01 1.58E+04 1.43E+01 9.52E-01 7.17E+03 0.292 13 8
8 7.34E+03 8.86E+01 1.60E+04 1.45E+01 9.63E-01 7.25E+03 0.296 13 9
9 7.37E+03 8.89E+01 1.60E+04 1.46E+01 9.66E-01 7.28E+03 0.297 13 10 10 7.28E+03 8.79E+01 1.59E+04 1.44E+01 9.55E-01 7.19E+03 0.293 13 12 11 7.26E+03 8.75E+01 1.58E+04 1.43E+01 9.52E-01 7.17E+03 0.292 13 13 12 7.32E+03 8.83E+01 1.59E+04 1.45E+01 9.60E-01 7.23E+03 0.295 13 14 13 7.24E+03 8.74E+01 1.58E+04 1.43E+01 9.50E-01 7.15E+03 0.292 13 15 14 6.94E+03 8.37E+01 1.51E+04 1.37E+01 9.10E-01 6.85E+03 0.279 13 16 15 6.78E+03 8.18E+01 1.48E+04 1.34E+01 8.89E-01 6.69E+03 0.273 13 17 16 7.12E+03 8.59E+01 1.55E+04 1.41E+01 9.33E-01 7.03E+03 0.287 13 18 17 6.96E+03 8.39E+01 1.51E+04 1.37E+01 9.12E-01 6.87E+03 0.280 13 19 18 6.52E+03 7.87E+01 1.42E+04 1.29E+01 8.55E-01 6.44E+03 0.263 13 20 19 6.56E+03 7.92E+01 1.43E+04 1.30E+01 8.60E-01 6.48E+03 0.264 13 21 20 6.74E+03 8.13E+01 1.47E+04 1.33E+01 8.84E-01 6.66E+03 0.271 13 22 21 7.63E+03 9.21E+01 1.66E+04 1.51E+01 1.00E+00 7.54E+03 0.307
[37]
ATTACHMENT 3 SIGN TEST
FSS RELEASE RECORD CONDENSATE FEED WATER SUPPLY AND RECIRCULATION BURIED PIPE SURVEY UNIT 00101A
[38]
Sign Test - Condensate Feed Water Supply and Recirculation Buried Piping Survey Area 00101 Survey Area Condensate Feed Water Supply and Recirculation Survey Unit 00101A Survey Unit Buried Pipe T-105 Classification 3
Type I Error 0.05 Number of Measurements 257 SOF (Ws) 1-Ws Sign SOF (Ws) 1-Ws Sign 1
0.486 0.514
+1 130 0.382 0.618
+1 2
0.310 0.690
+1 131 0.375 0.625
+1 3
0.302 0.698
+1 132 0.363 0.637
+1 4
0.295 0.705
+1 133 0.350 0.650
+1 5
0.280 0.720
+1 134 0.347 0.653
+1 6
0.279 0.721
+1 135 0.352 0.648
+1 7
0.279 0.721
+1 136 0.351 0.649
+1 8
0.295 0.705
+1 137 0.346 0.654
+1 9
0.293 0.707
+1 138 0.354 0.646
+1 10 0.299 0.701
+1 139 0.351 0.649
+1 11 0.300 0.700
+1 140 0.359 0.641
+1 12 0.299 0.701
+1 141 0.354 0.646
+1 13 0.298 0.702
+1 142 0.359 0.641
+1 14 0.308 0.692
+1 143 0.356 0.644
+1 15 0.444 0.556
+1 144 0.354 0.646
+1 16 0.269 0.731
+1 145 0.343 0.657
+1 17 0.267 0.733
+1 146 0.340 0.660
+1 18 0.276 0.724
+1 147 0.355 0.645
+1 19 0.272 0.728
+1 148 0.332 0.668
+1 20 0.261 0.739
+1 149 0.330 0.670
+1 21 0.265 0.735
+1 150 0.363 0.637
+1 22 0.259 0.741
+1 151 0.373 0.627
+1 23 0.263 0.737
+1 152 0.293 0.707
+1 24 0.265 0.735
+1 153 0.472 0.528
+1 25 0.265 0.735
+1 154 0.315 0.685
+1 26 0.262 0.738
+1 155 0.323 0.677
+1 27 0.270 0.730
+1 156 0.350 0.650
+1 28 0.263 0.737
+1 157 0.364 0.636
+1 29 0.272 0.728
+1 158 0.381 0.619
+1 30 0.280 0.720
+1 159 0.399 0.601
+1 31 0.303 0.697
+1 160 0.357 0.643
+1 32 0.348 0.652
+1 161 0.345 0.655
+1 33 0.364 0.636
+1 162 0.329 0.671
+1
FSS RELEASE RECORD CONDENSATE FEED WATER SUPPLY AND RECIRCULATION BURIED PIPE SURVEY UNIT 00101A
[39]
Sign Test - Unit 1 Containment Basement Above 565 foot Elevation (continued)
SOF (Ws) 1-Ws Sign SOF (Ws) 1-Ws Sign 34 0.345 0.655
+1 163 0.318 0.682
+1 35 0.459 0.541
+1 164 0.315 0.685
+1 36 0.260 0.740
+1 165 0.318 0.682
+1 37 0.304 0.696
+1 166 0.314 0.686
+1 38 0.289 0.711
+1 167 0.313 0.687
+1 39 0.274 0.726
+1 168 0.316 0.684
+1 40 0.252 0.748
+1 169 0.303 0.697
+1 41 0.256 0.744
+1 170 0.309 0.691
+1 42 0.260 0.740
+1 171 0.308 0.692
+1 43 0.242 0.758
+1 172 0.316 0.684
+1 44 0.254 0.746
+1 173 0.315 0.685
+1 45 0.264 0.736
+1 174 0.334 0.666
+1 46 0.251 0.749
+1 175 0.438 0.562
+1 47 0.274 0.726
+1 176 0.303 0.697
+1 48 0.271 0.729
+1 177 0.302 0.698
+1 49 0.273 0.727
+1 178 0.317 0.683
+1 50 0.277 0.723
+1 179 0.319 0.681
+1 51 0.297 0.703
+1 180 0.317 0.683
+1 52 0.319 0.681
+1 181 0.323 0.677
+1 53 0.352 0.648
+1 182 0.324 0.676
+1 54 0.493 0.507
+1 183 0.323 0.677
+1 55 0.300 0.700
+1 184 0.308 0.692
+1 56 0.290 0.710
+1 185 0.312 0.688
+1 57 0.296 0.704
+1 186 0.315 0.685
+1 58 0.288 0.712
+1 187 0.299 0.701
+1 59 0.292 0.708
+1 188 0.304 0.696
+1 60 0.295 0.705
+1 189 0.300 0.700
+1 61 0.293 0.707
+1 190 0.316 0.684
+1 62 0.304 0.696
+1 191 0.312 0.688
+1 63 0.294 0.706
+1 192 0.309 0.691
+1 64 0.294 0.706
+1 193 0.316 0.684
+1 65 0.307 0.693
+1 194 0.316 0.684
+1 66 0.312 0.688
+1 195 0.328 0.672
+1 67 0.313 0.687
+1 196 0.331 0.669
+1 68 0.313 0.687
+1 197 0.337 0.663
+1 69 0.315 0.685
+1 198 0.327 0.673
+1 70 0.319 0.681
+1 199 0.332 0.668
+1 71 0.335 0.665
+1 200 0.339 0.661
+1
FSS RELEASE RECORD CONDENSATE FEED WATER SUPPLY AND RECIRCULATION BURIED PIPE SURVEY UNIT 00101A
[40]
Sign Test - Unit 1 Containment Basement Above 565 foot Elevation (continued)
SOF (Ws) 1-Ws Sign SOF (Ws) 1-Ws Sign 72 0.378 0.622
+1 201 0.327 0.673
+1 73 0.477 0.523
+1 202 0.314 0.686
+1 74 0.328 0.672
+1 203 0.322 0.678
+1 75 0.335 0.665
+1 204 0.447 0.553
+1 76 0.346 0.654
+1 205 0.291 0.709
+1 77 0.347 0.653
+1 206 0.305 0.695
+1 78 0.334 0.666
+1 207 0.307 0.693
+1 79 0.338 0.662
+1 208 0.311 0.689
+1 80 0.328 0.672
+1 209 0.306 0.694
+1 81 0.345 0.655
+1 210 0.305 0.695
+1 82 0.469 0.531
+1 211 0.308 0.692
+1 83 0.334 0.666
+1 212 0.303 0.697
+1 84 0.330 0.670
+1 213 0.303 0.697
+1 85 0.325 0.675
+1 214 0.304 0.696
+1 86 0.332 0.668
+1 215 0.306 0.694
+1 87 0.330 0.670
+1 216 0.301 0.699
+1 88 0.324 0.676
+1 217 0.303 0.697
+1 89 0.331 0.669
+1 218 0.306 0.694
+1 90 0.342 0.658
+1 219 0.307 0.693
+1 91 0.337 0.663
+1 220 0.296 0.704
+1 92 0.366 0.634
+1 221 0.316 0.684
+1 93 0.439 0.561
+1 222 0.300 0.700
+1 94 0.316 0.684
+1 223 0.315 0.685
+1 95 0.323 0.677
+1 224 0.309 0.691
+1 96 0.320 0.680
+1 225 0.313 0.687
+1 97 0.318 0.682
+1 226 0.310 0.690
+1 98 0.309 0.691
+1 227 0.316 0.684
+1 99 0.317 0.683
+1 228 0.317 0.683
+1 100 0.319 0.681
+1 229 0.324 0.676
+1 101 0.318 0.682
+1 230 0.316 0.684
+1 102 0.318 0.682
+1 231 0.324 0.676
+1 103 0.319 0.681
+1 232 0.310 0.690
+1 104 0.313 0.687
+1 233 0.307 0.693
+1 105 0.311 0.689
+1 234 0.323 0.677
+1 106 0.307 0.693
+1 235 0.377 0.623
+1 107 0.301 0.699
+1 236 0.386 0.614
+1 108 0.310 0.690
+1 237 0.283 0.717
+1 109 0.307 0.693
+1 238 0.293 0.707
+1
FSS RELEASE RECORD CONDENSATE FEED WATER SUPPLY AND RECIRCULATION BURIED PIPE SURVEY UNIT 00101A
[41]
Sign Test - Unit 1 Containment Basement Above 565 foot Elevation (continued)
SOF (Ws) 1-Ws Sign SOF (Ws) 1-Ws Sign 110 0.314 0.686
+1 239 0.291 0.709
+1 111 0.311 0.689
+1 240 0.288 0.712
+1 112 0.319 0.681
+1 241 0.293 0.707
+1 113 0.311 0.689
+1 242 0.288 0.712
+1 114 0.309 0.691
+1 243 0.292 0.708
+1 115 0.309 0.691
+1 244 0.296 0.704
+1 116 0.310 0.690
+1 245 0.297 0.703
+1 117 0.312 0.688
+1 246 0.293 0.707
+1 118 0.320 0.680
+1 247 0.292 0.708
+1 119 0.309 0.691
+1 248 0.295 0.705
+1 120 0.320 0.680
+1 249 0.292 0.708
+1 121 0.321 0.679
+1 250 0.279 0.721
+1 122 0.493 0.507
+1 251 0.273 0.727
+1 123 0.331 0.669
+1 252 0.287 0.713
+1 124 0.332 0.668
+1 253 0.280 0.720
+1 125 0.344 0.656
+1 254 0.263 0.737
+1 126 0.391 0.609
+1 255 0.264 0.736
+1 127 0.417 0.583
+1 256 0.271 0.729
+1 128 0.420 0.580
+1 257 0.307 0.693
+1 129 0.397 0.603
+1 Number of positive differences (S+)
257 Critical Value 142 The Survey Unit MEETS the Acceptance Criteria
[42]
ATTACHMENT 4 QC DATA
FSS RELEASE RECORD CONDENSATE FEED WATER SUPPLY AND RECIRCULATION BURIED PIPE SURVEY UNIT 00101A
[43]
CONDENSATE FEED WATER SUPPLY AND RECIRCULATION BURIED PIPE - QC AGREEMENT Survey Unit #
00101 Survey Unit Name Condensate Feed Water Supply and Recirculation Buried Pipe Sample Plan #
S3-00101a Sample
Description:
Comparison of replicate gross-gamma measurements for QC from Pipe 1 -
position 11, Pipe 2 - position 16, Pipe 3 - position 10, Pipe 4 - position 3, Pipe 5 - position 11, Pipe 6 - position 4, Pipe 7 - position 5, Pipe 8 - position 10, Pipe 8 - position 23, Pipe 9 - position 12, Pipe 9 - position 24, Pipe 10 - position 10, Pipe 10 - position 18, Pipe 11 - position 15, Pipe 11 -
position 25, Pipe 12 - position 15, Pipe 12 - position 25 and Pipe 13 - position 11.
STANDARD DUPLICATE ID ACTIVITY
+20%
-20%
ID ACTIVITY ACCEPTABLE (dpm/100cm2)
(dpm/100cm2)
(dpm/100cm2)
(dpm/100cm2)
(Y/N)
Pipe 1 Position 3 7.42E+03 8.91E+03 5.94E+03 Pipe 1 Position 3 QC 7.64E+03 Y
Pipe 2 Position 16 7.52E+03 9.03E+03 6.02E+03 Pipe 2 Position 16 QC 7.70E+03 Y
Pipe 3 Position 10 6.54E+03 7.85E+03 5.24E+03 Pipe 3 Position 10 QC 6.56E+03 Y
Pipe 4 Position 3 7.93E+03 9.51E+03 6.34E+03 Pipe 4 Position 3 QC 8.02E+03 Y
Pipe 5 Position 11 7.63E+03 9.16E+03 6.11E+03 Pipe 5 Position 11 QC 7.71E+03 Y
Pipe 6 Position 4 8.62E+03 1.03E+04 6.90E+03 Pipe 6 Position 4 QC 8.57E+03 Y
Pipe 7 Position 5 8.18E+03 9.82E+03 6.55E+03 Pipe 7 Position 5 QC 8.07E+03 Y
Pipe 8 Position 10 7.92E+03 9.50E+03 6.33E+03 Pipe 8 Position 10 QC 7.78E+03 Y
Pipe 9 Position 12 7.69E+03 9.23E+03 6.15E+03 Pipe 9 Position 12 QC 7.80E+03 Y
Pipe 9 Position 24 8.62E+03 1.03E+04 6.89E+03 Pipe 9 Position 24 QC 8.55E+03 Y
Pipe 10 position 10 8.44E+03 1.01E+04 6.75E+03 Pipe 10 position 10 QC 8.42E+03 Y
Pipe 10 Position 18 7.90E+03 9.48E+03 6.32E+03 Pipe 10 Position 18 QC 7.98E+03 Y
Pipe 11 Position 15 7.64E+03 9.17E+03 6.12E+03 Pipe 11 Position 15 QC 7.78E+03 Y
Pipe 11 Position 25 7.84E+03 9.41E+03 6.27E+03 Pipe 11 Position 25 QC 7.72E+03 Y
Pipe 12 Position 15 8.43E+03 1.01E+04 6.74E+03 Pipe 12 Position 15 QC 8.51E+03 Y
Pipe 12 Position 25 7.61E+03 9.13E+03 6.09E+03 Pipe 12 Position 25 QC 7.61E+03 Y
Pipe 13 Position 10 8.03E+03 9.64E+03 6.43E+03 Pipe 13 Position 10 QC 7.85E+03 Y
Comments/Corrective Actions: There was acceptable agreement between the standard measurement and the replicate measurement. No further action is necessary.
The acceptance criteria for replicate static measurements and scan surveys is that the same conclusion is reached for each measurement. That is defined as + 20% of the standard.