ML18052A541
| ML18052A541 | |
| Person / Time | |
|---|---|
| Site: | Zion File:ZionSolutions icon.png |
| Issue date: | 11/08/2017 |
| From: | Yetter R F ZionSolutions |
| To: | Office of Nuclear Material Safety and Safeguards |
| References | |
| ZS-2018-0008 TSD-17-010, Rev 1 | |
| Download: ML18052A541 (1422) | |
Text
Technical Support Document Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 2 of 2468 Table of Contents Table of Contents .......................................................................................................................................... 2 List of Attachment Figures ............................................................................................................................ 3 List of Tables ................................................................................................................................................. 6 List of Attachment Tables ............................................................................................................................. 6 1 PURPOSE ............................................................................................................................................. 10 2 DISCUSSION ......................................................................................................................................... 10 2.1 Overview ..................................................................................................................................... 10 2.1.1 Survey Units ........................................................................................................................ 11 2.2 Unconditional Release Survey Approach .................................................................................... 12 2.2.1 Survey Design ...................................................................................................................... 12 2.2.2 Instrumentation and Minimum Detectable Concentrations (MDCs) ................................. 14 2.3 Unconditional Release Survey Implementation ......................................................................... 18 2.3.1 Chlorination/Dechlorination Buildings ............................................................................... 18 2.3.2 Contractor Break Building ................................................................................................... 18 2.3.3 Crib House ........................................................................................................................... 19 2.3.4 East/West Service Building ................................................................................................. 21 2.3.5 ENC ...................................................................................................................................... 32 2.3.6 Fire Training Buildings ......................................................................................................... 33 2.3.7 Interim Radwaste Storage Facility (IRSF) ............................................................................ 33 2.3.8 Mechanical Maintenance Training Center (MMTC) ............................................................ 35 2.3.9 NGET .................................................................................................................................... 36 2.3.10 Old Gatehouse .................................................................................................................... 36 2.3.11 Old Sewage Lift Station ....................................................................................................... 37 2.3.12 South Gatehouse ................................................................................................................. 38 2.3.13 Turbine Building .................................................................................................................. 38 2.3.14 Unit 1 Containment ............................................................................................................. 73 2.3.15 Unit 2 Containment ............................................................................................................. 74 2.3.16 Vertical Concrete Cask (VCC) Pad ....................................................................................... 74 3 SUMMARY AND CONCLUSIONS .......................................................................................................... 75 4 REFERENCES ........................................................................................................................................ 76 Attachment 1 - Tables and Figures ............................................................................................................. 77 Attachment 2 - Gamma Spectroscopy Reports ...................................................................................... 1423 Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 3 of 2468 List of Attachment Figures Attachment Figure 1-1 ZSRP Site Map ........................................................................................................ 78 Attachment Figure 1-2 09300 Survey Maps ............................................................................................... 92 Attachment Figure 1-3 09701 Survey Maps ............................................................................................. 101 Attachment Figure 1-4 09702 & 09703 Survey Maps ............................................................................... 109 Attachment Figure 1-5 08200A Survey Maps ........................................................................................... 117 Attachment Figure 1-6 08200B Survey Maps ........................................................................................... 124 Attachment Figure 1-7 08200C Survey Maps ........................................................................................... 132 Attachment Figure 1-8 08301 Survey Maps ............................................................................................. 144 Attachment Figure 1-9 07001A Survey Maps ........................................................................................... 153 Attachment Figure 1-10 07001B Survey Maps ......................................................................................... 164 Attachment Figure 1-11 07001C Survey Maps ......................................................................................... 169 Attachment Figure 1-12 07001D Survey Maps ......................................................................................... 175 Attachment Figure 1-13 07002A Survey Maps ......................................................................................... 179 Attachment Figure 1-14 07002B Survey Maps ......................................................................................... 185 Attachment Figure 1-15 07002C Survey Maps ......................................................................................... 189 Attachment Figure 1-16 07101 Survey Maps ........................................................................................... 200 Attachment Figure 1-17 07102A Survey Maps ......................................................................................... 232 Attachment Figure 1-18 07102B Survey Maps ......................................................................................... 244 Attachment Figure 1-19 07102C Survey Maps ......................................................................................... 257 Attachment Figure 1-20 07102D Survey Maps ......................................................................................... 276 Attachment Figure 1-21 07102E Survey Maps ......................................................................................... 284 Attachment Figure 1-22 07201 Survey Maps ........................................................................................... 305 Attachment Figure 1-23 07202 Survey Maps ........................................................................................... 318 Attachment Figure 1-24 07301 Survey Maps ........................................................................................... 333 Attachment Figure 1-25 07302 Survey Maps ........................................................................................... 346 Attachment Figure 1-26 07401 Survey Maps ........................................................................................... 363 Attachment Figure 1-27 07402 Survey Maps ........................................................................................... 369 Attachment Figure 1-28 07701 Survey Maps ........................................................................................... 381 Attachment Figure 1-29 07702 Survey Maps ........................................................................................... 391 Attachment Figure 1-30 07703 Survey Maps ........................................................................................... 397 Attachment Figure 1-31 09900 Survey Maps ........................................................................................... 425 Attachment Figure 1-32 09601A Survey Maps ......................................................................................... 441 Attachment Figure 1-33 09501A Survey Maps ......................................................................................... 455 Attachment Figure 1-34 09501B Survey Maps ......................................................................................... 465 Attachment Figure 1-35 09501C Survey Maps ......................................................................................... 473 Attachment Figure 1-36 09504 Survey Maps ........................................................................................... 485 Attachment Figure 1-37 09400 Survey Maps ........................................................................................... 493 Attachment Figure 1-38 09800 Survey Maps ........................................................................................... 508 Attachment Figure 1-39 09131 Survey Maps ........................................................................................... 515 Attachment Figure 1-40 10220B Survey Maps ......................................................................................... 520 Attachment Figure 1-41 10220BA Survey Maps ....................................................................................... 526 Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 4 of 2468 Attachment Figure 1-42 09140 Survey Maps ........................................................................................... 548 Attachment Figure 1-43 06000A Survey Maps ......................................................................................... 564 Attachment Figure 1-44 06000B Survey Maps ......................................................................................... 573 Attachment Figure 1-45 06000C Survey Maps ......................................................................................... 578 Attachment Figure 1-46 06000D Survey Maps ......................................................................................... 587 Attachment Figure 1-47 06000E Survey Maps ......................................................................................... 592 Attachment Figure 1-48 06000F Survey Maps ......................................................................................... 598 Attachment Figure 1-49 06307 Survey Maps ........................................................................................... 611 Attachment Figure 1-50 06307A Survey Maps ......................................................................................... 622 Attachment Figure 1-51 06310A Survey Maps ......................................................................................... 632 Attachment Figure 1-52 06310B Survey Maps ......................................................................................... 640 Attachment Figure 1-53 06310C Survey Maps ......................................................................................... 652 Attachment Figure 1-54 06310D Survey Maps ......................................................................................... 663 Attachment Figure 1-55 06310E Survey Maps ......................................................................................... 673 Attachment Figure 1-56 06310F Survey Maps ......................................................................................... 684 Attachment Figure 1-57 06311-1A Survey Maps ...................................................................................... 693 Attachment Figure 1-58 06311A Survey Maps ......................................................................................... 703 Attachment Figure 1-59 06311B Survey Maps ......................................................................................... 711 Attachment Figure 1-60 06311C Survey Maps ......................................................................................... 726 Attachment Figure 1-61 06311D Survey Maps ......................................................................................... 738 Attachment Figure 1-62 06311E Survey Maps ......................................................................................... 751 Attachment Figure 1-63 06311F Survey Maps ......................................................................................... 764 Attachment Figure 1-64 06311G Survey Maps ......................................................................................... 777 Attachment Figure 1-65 06311H Survey Maps ......................................................................................... 790 Attachment Figure 1-66 06312A Survey Maps ......................................................................................... 805 Attachment Figure 1-67 06312B Survey Maps ......................................................................................... 814 Attachment Figure 1-68 06312C Survey Maps ......................................................................................... 827 Attachment Figure 1-69 06312D Survey Maps ......................................................................................... 836 Attachment Figure 1-70 06312E Survey Maps ......................................................................................... 851 Attachment Figure 1-71 06401A Survey Maps ......................................................................................... 869 Attachment Figure 1-72 06401B Survey Maps ......................................................................................... 885 Attachment Figure 1-73 06505A Survey Maps ......................................................................................... 898 Attachment Figure 1-74 06505B Survey Maps ......................................................................................... 910 Attachment Figure 1-75 06505C Survey Maps ......................................................................................... 921 Attachment Figure 1-76 06506A Survey Maps ......................................................................................... 936 Attachment Figure 1-77 06506B Survey Maps ......................................................................................... 949 Attachment Figure 1-78 06506C Survey Maps ......................................................................................... 962 Attachment Figure 1-79 06506D Survey Maps ......................................................................................... 975 Attachment Figure 1-80 06506E Survey Maps ......................................................................................... 989 Attachment Figure 1-81 06506F Survey Maps ....................................................................................... 1003 Attachment Figure 1-82 06507A Survey Maps ....................................................................................... 1020 Attachment Figure 1-83 06507B Survey Maps ....................................................................................... 1037 Attachment Figure 1-84 06507C Survey Maps ....................................................................................... 1055 Attachment Figure 1-85 06601A Survey Maps ....................................................................................... 1063 Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 5 of 2468 Attachment Figure 1-86 06601B Survey Maps ....................................................................................... 1071 Attachment Figure 1-87 06708A Survey Maps ....................................................................................... 1091 Attachment Figure 1-88 06708B Survey Maps ....................................................................................... 1110 Attachment Figure 1-89 06708C Survey Maps ....................................................................................... 1123 Attachment Figure 1-90 06708D Survey Maps ....................................................................................... 1139 Attachment Figure 1-91 06709A Survey Maps ....................................................................................... 1157 Attachment Figure 1-92 06709B Survey Maps ....................................................................................... 1175 Attachment Figure 1-93 06709C Survey Maps ....................................................................................... 1188 Attachment Figure 1-94 06709D Survey Maps ....................................................................................... 1204 Attachment Figure 1-95 06709E Survey Maps ....................................................................................... 1219 Attachment Figure 1-96 06709F Survey Maps ....................................................................................... 1232 Attachment Figure 1-97 06710A Survey Maps ....................................................................................... 1247 Attachment Figure 1-98 06710B Survey Maps ....................................................................................... 1261 Attachment Figure 1-99 06710C Survey Maps ....................................................................................... 1279 Attachment Figure 1-100 06710D Survey Maps ..................................................................................... 1296 Attachment Figure 1-101 06801A Survey Maps ..................................................................................... 1305 Attachment Figure 1-102 06801B Survey Maps ..................................................................................... 1312 Attachment Figure 1-103 06901A Survey Maps ..................................................................................... 1334 Attachment Figure 1-104 06901B Survey Maps ..................................................................................... 1339 Attachment Figure 1-105 06901C Survey Maps ..................................................................................... 1344 Attachment Figure 1-106 06901D Survey Maps ..................................................................................... 1347 Attachment Figure 1-107 06902A Survey Maps ..................................................................................... 1357 Attachment Figure 1-108 06902B Survey Maps ..................................................................................... 1365 Attachment Figure 1-109 06902C Survey Maps ..................................................................................... 1368 Attachment Figure 1-110 06902D Survey Maps ..................................................................................... 1373 Attachment Figure 1-111 06902E Survey Maps ..................................................................................... 1381 Attachment Figure 1-112 01401A Survey Maps ..................................................................................... 1388 Attachment Figure 1-113 01402A Survey Maps ..................................................................................... 1398 Attachment Figure 1-114 02401A Survey Maps ..................................................................................... 1405 Attachment Figure 1-115 02402A Survey Maps ..................................................................................... 1416 Attachment Figure 1-116 10212A Survey Maps ..................................................................................... 1422 Attachment Figure 2-1 09300 Gamma Spectroscopy Reports ............................................................... 1424 Attachment Figure 2-2 08200C Gamma Spectroscopy Reports ............................................................. 1448 Attachment Figure 2-3 08301 Gamma Spectroscopy Reports ............................................................... 1496 Attachment Figure 2-4 07001A Gamma Spectroscopy Reports ............................................................. 1652 Attachment Figure 2-5 07001B Gamma Spectroscopy Reports ............................................................. 1661 Attachment Figure 2-6 07001C Gamma Spectroscopy Reports ............................................................. 1789 Attachment Figure 2-7 07102A Gamma Spectroscopy Reports ............................................................. 1805 Attachment Figure 2-8 07701 Gamma Spectroscopy Reports ............................................................... 1876 Attachment Figure 2-9 09601A Gamma Spectroscopy Reports ............................................................. 1934 Attachment Figure 2-10 09501A Gamma Spectroscopy Reports ........................................................... 2121 Attachment Figure 2-11 09400 Gamma Spectroscopy Reports ............................................................. 2137 Attachment Figure 2-12 09800 Gamma Spectroscopy Reports ............................................................. 2144 Attachment Figure 2-13 10220BA Gamma Spectroscopy Reports ......................................................... 2156 Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 6 of 2468 Attachment Figure 2-14 09140 Gamma Spectroscopy Reports ............................................................. 2174 Attachment Figure 2-15 06000B Gamma Spectroscopy Reports ........................................................... 2226 Attachment Figure 2-16 06310C Gamma Spectroscopy Reports ........................................................... 2234 Attachment Figure 2-17 06310D Gamma Spectroscopy Reports ........................................................... 2251 Attachment Figure 2-18 06310E Gamma Spectroscopy Reports ........................................................... 2272 Attachment Figure 2-19 06310F Gamma Spectroscopy Reports ........................................................... 2295 Attachment Figure 2-20 06311A Gamma Spectroscopy Reports ........................................................... 2311 Attachment Figure 2-21 06311C Gamma Spectroscopy Reports ........................................................... 2318 Attachment Figure 2-22 06311D Gamma Spectroscopy Reports ........................................................... 2325 Attachment Figure 2-23 06311F Gamma Spectroscopy Reports ........................................................... 2332 Attachment Figure 2-24 06312E Gamma Spectroscopy Reports ........................................................... 2348 Attachment Figure 2-25 06506D Gamma Spectroscopy Results ............................................................ 2356 Attachment Figure 2-26 06601A Gamma Spectroscopy Reports ........................................................... 2363 Attachment Figure 2-27 06708A Gamma Spectroscopy Reports ........................................................... 2370 Attachment Figure 2-28 06708B Gamma Spectroscopy Reports ........................................................... 2386 Attachment Figure 2-29 06708D Gamma Spectroscopy Reports ........................................................... 2402 Attachment Figure 2-30 06901A Gamma Spectroscopy Reports ........................................................... 2410 Attachment Figure 2-31 06901B Gamma Spectroscopy Reports ........................................................... 2418 Attachment Figure 2-32 06902A Gamma Spectroscopy Reports ........................................................... 2455 List of Tables Recommended Scan Coverage (Class 2 and Class 3) .................................................................................. 13 Instrumentati .......................................................................................... 15 Scan Speeds and Corresponding Observation Intervals (i) ......................................................................... 15 MDCR and Action Levels (in cpm) for Model 43-37 .................................................................................... 16 MDCR and Action Levels (in cpm) for Model 43-68 .................................................................................... 16 MDCR and Action Levels (in cpm) for Model 43-93 .................................................................................... 16 List of Attachment Tables Attachment Table 1-1 09300 Download Reports ....................................................................................... 79 Attachment Table 1-2 09701 Download Reports ....................................................................................... 96 Attachment Table 1-3 09702 & 09703 Download Reports ....................................................................... 104 Attachment Table 1-4 08200A Download Reports ................................................................................... 111 Attachment Table 1-5 08200B Download Reports ................................................................................... 118 Attachment Table 1-6 08200C Download Reports ................................................................................... 125 Attachment Table 1-7 08301 Download Reports ..................................................................................... 134 Attachment Table 1-8 07001A Download Reports ................................................................................... 147 Attachment Table 1-9 07001B Download Reports ................................................................................... 154 Attachment Table 1-10 07001C Download Reports ................................................................................. 165 Attachment Table 1-11 07001D Download Reports ................................................................................. 170 Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 7 of 2468 Attachment Table 1-12 07002A Download Reports ................................................................................. 176 Attachment Table 1-13 07002B Download Reports ................................................................................. 180 Attachment Table 1-14 07002C Download Reports ................................................................................. 187 Attachment Table 1-15 07101 Download Reports ................................................................................... 190 Attachment Table 1-16 07102A Download Reports ................................................................................. 201 Attachment Table 1-17 07102B Download Reports ................................................................................. 235 Attachment Table 1-18 07102C Download Reports ................................................................................. 247 Attachment Table 1-19 07102D Download Reports ................................................................................. 259 Attachment Table 1-20 07102E Download Reports ................................................................................. 278 Attachment Table 1-21 07201 Download Reports ................................................................................... 288 Attachment Table 1-22 07202 Download Reports ................................................................................... 306 Attachment Table 1-23 07301 Download Reports ................................................................................... 319 Attachment Table 1-24 07302 Download Reports ................................................................................... 334 Attachment Table 1-25 07401 Download Reports ................................................................................... 347 Attachment Table 1-26 07402 Download Reports ................................................................................... 364 Attachment Table 1-27 07701 Download Reports ................................................................................... 370 Attachment Table 1-28 07702 Download Reports ................................................................................... 383 Attachment Table 1-29 07703 Download Reports ................................................................................... 392 Attachment Table 1-30 09900 Download Reports ................................................................................... 398 Attachment Table 1-31 09601A Download Reports ................................................................................. 426 Attachment Table 1-32 09501A Download Reports ................................................................................. 444 Attachment Table 1-33 09501B Download Reports ................................................................................. 457 Attachment Table 1-34 09501C Download Reports ................................................................................. 468 Attachment Table 1-35 09504 Download Reports ................................................................................... 475 Attachment Table 1-36 09400 Download Reports ................................................................................... 487 Attachment Table 1-37 09800 Download Reports ................................................................................... 495 Attachment Table 1-38 09131 Download Reports ................................................................................... 509 Attachment Table 1-39 10220B Download Reports ................................................................................. 518 Attachment Table 1-40 10220BA Download Reports ............................................................................... 521 Attachment Table 1-41 09140 Download Reports ................................................................................... 527 Attachment Table 1-42 06000A Download Reports ................................................................................. 558 Attachment Table 1-43 06000B Download Reports ................................................................................. 565 Attachment Table 1-44 06000C Download Reports ................................................................................. 574 Attachment Table 1-45 06000D Download Reports ................................................................................. 580 Attachment Table 1-46 06000E Download Reports ................................................................................. 588 Attachment Table 1-47 06000F Download Reports ................................................................................. 593 Attachment Table 1-48 06307 Download Reports ................................................................................... 600 Attachment Table 1-49 06307A Download Reports ................................................................................. 614 Attachment Table 1-50 06310A Download Reports ................................................................................. 623 Attachment Table 1-51 06310B Download Reports ................................................................................. 633 Attachment Table 1-52 06310C Download Reports ................................................................................. 641 Attachment Table 1-53 06310D Download Reports ................................................................................. 653 Attachment Table 1-54 06310E Download Reports ................................................................................. 664 Attachment Table 1-55 06310F Download Reports ................................................................................. 674 Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 8 of 2468 Attachment Table 1-56 06311A-1A Download Reports ........................................................................... 686 Attachment Table 1-57 06311A Download Reports ................................................................................. 695 Attachment Table 1-58 06311B Download Reports ................................................................................. 705 Attachment Table 1-59 06311C Download Reports ................................................................................. 714 Attachment Table 1-60 06311D Download Reports ................................................................................. 729 Attachment Table 1-61 06311E Download Reports ................................................................................. 741 Attachment Table 1-62 06311F Download Reports ................................................................................. 753 Attachment Table 1-63 06311G Download Reports ................................................................................. 766 Attachment Table 1-64 06311H Download Reports ................................................................................. 781 Attachment Table 1-65 06312A Download Reports ................................................................................. 794 Attachment Table 1-66 06312B Download Reports ................................................................................. 807 Attachment Table 1-67 06312C Download Reports ................................................................................. 816 Attachment Table 1-68 06312D Download Reports ................................................................................. 829 Attachment Table 1-69 06312E Download Reports ................................................................................. 838 Attachment Table 1-70 06401A Download Reports ................................................................................. 854 Attachment Table 1-71 06401B Download Reports ................................................................................. 872 Attachment Table 1-72 06505A Download Reports ................................................................................. 888 Attachment Table 1-73 06505B Download Reports ................................................................................. 901 Attachment Table 1-74 06505C Download Reports ................................................................................. 912 Attachment Table 1-75 06506A Download Reports ................................................................................. 923 Attachment Table 1-76 06506B Download Reports ................................................................................. 939 Attachment Table 1-77 06506C Download Reports ................................................................................. 953 Attachment Table 1-78 06506D Download Reports ................................................................................. 965 Attachment Table 1-79 06506E Download Reports ................................................................................. 978 Attachment Table 1-80 06506F Download Reports ................................................................................. 992 Attachment Table 1-81 06507A Download Reports ............................................................................... 1006 Attachment Table 1-82 06507B Download Reports ............................................................................... 1024 Attachment Table 1-83 06507C Download Reports ............................................................................... 1040 Attachment Table 1-84 06601A Download Reports ............................................................................... 1058 Attachment Table 1-85 06601B Download Reports ............................................................................... 1066 Attachment Table 1-86 06708A Download Reports ............................................................................... 1074 Attachment Table 1-87 06708B Download Reports ............................................................................... 1095 Attachment Table 1-88 06708C Download Reports ............................................................................... 1114 Attachment Table 1-89 06708D Download Reports ............................................................................... 1127 Attachment Table 1-90 06709A Download Reports ............................................................................... 1144 Attachment Table 1-91 06709B Download Reports ............................................................................... 1164 Attachment Table 1-92 06709C Download Reports ............................................................................... 1177 Attachment Table 1-93 06709D Download Reports ............................................................................... 1191 Attachment Table 1-94 06709E Download Reports ............................................................................... 1207 Attachment Table 1-95 06709F Download Reports ............................................................................... 1222 Attachment Table 1-96 06710A Download Reports ............................................................................... 1235 Attachment Table 1-97 06710B Download Reports ............................................................................... 1251 Attachment Table 1-98 06710C Download Reports ............................................................................... 1265 Attachment Table 1-99 06710D Download Reports ............................................................................... 1286 Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 9 of 2468 Attachment Table 1-100 06801A Download Reports ............................................................................. 1300 Attachment Table 1-101 06801B Download Reports ............................................................................. 1308 Attachment Table 1-102 06901A Download Reports ............................................................................. 1315 Attachment Table 1-103 06901B Download Reports ............................................................................. 1335 Attachment Table 1-104 06901C Download Reports ............................................................................. 1340 Attachment Table 1-105 06901D Download Reports ............................................................................. 1345 Attachment Table 1-106 06902A Download Reports ............................................................................. 1348 Attachment Table 1-107 06902B Download Reports ............................................................................. 1358 Attachment Table 1-108 06902C Download Reports ............................................................................. 1366 Attachment Table 1-109 06902D Download Reports ............................................................................. 1369 Attachment Table 1-110 06902E Download Reports ............................................................................. 1376 Attachment Table 1-111 01401A Download Reports ............................................................................. 1382 Attachment Table 1-112 01402A Download Reports ............................................................................. 1390 Attachment Table 1-113 02401A Download Reports ............................................................................. 1399 Attachment Table 1-114 02402A Download Reports ............................................................................. 1407 Attachment Table 1-115 10212A Download Reports ............................................................................. 1417 Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 10 of 2468 1PURPOSE This Unconditional Release Survey (URS) Final Report presents a description of the radiological conditions of site structural surfaces and Materials and Equipment (M&E) that were surveyed for unconditional release at the Zion Nuclear Power Station (ZNPS). URS were performed to demonstrate that the materials were suitable for either unconditional release or reuse at the ZNPS. This report covers, in particular, the URS of concrete structures that were designated (by process knowledge and previous characterization results) as candidates for the potential use as clean basement backfill. Any data from structures or M&E surveyed under the URS program after the issuance of this Final Report will be detailed in a separate report. This report has been generated in accordance with Section 5.7.1.12 of the Zion Station Restoration Project (ZSRP) License Termination Plan (LTP) [1]. 2DISCUSSION 2.1Overview ZionSolutions evaluated the use of Clean Construction or Demolition Debris (CCDD) for the end-state of the basements and submitted a "Request for Concurrence for Basement Fill End-State" to the Illinois Environmental Protection Agency (EPA) in August of 2014. This request included the results of a sampling plan for concrete structures that were candidates to be used as fill material for the basement end-state. On October 3, 2014, ZionSolutions received a "Letter of Concurrence" from the Illinois EPA for the use of CCDD as clean basement fill. In accordance with Section 3.160(b) of the Illinois Environmental Protection Act, CCDD is defined as uncontaminated broken concrete without protruding metal bars, bricks, rock, stone, reclaimed or other asphalt pavement or soil generated from construction or demolition activities. A URS was conducted to ensure that potential concrete to be used as backfill met the CCDD definition and was free of detectable residual radioactivity. Concrete that meets the definition of CCDD and, where radiological surveys performed prior to demolition demonstrate that the concrete meets the unconditional release criteria of no detectable residual radioactivity above background may be used as backfill at ZSRP. The results of our surveys demonstrate that all concrete designated as backfill material in basements is clean through the URS program at Zion presented in ZionSolutions procedure ZS-LT-400-001-001, "Unconditional Release of Materials, Equipment and Secondary Structures" [2]. Materials unconditionally released from Zion, regardless of their point of origin on the site, have been verified to contain no detectable plant-derived radioactivity and are free to be used and relocated anywhere offsite without tracking, controls, or dose considerations. Although the concrete debris to be used as clean fill can be viewed as having no dose impact, a dose value will be assigned for the purpose of demonstrating compliance with 10 CFR 20.1402. The dose value attributed to backfill is calculated using the basement volumes and maximum MDC observed during performance of URS. Table 1 below presents the basement volumes, backfill requirements, and available onsite fill at ZSRP. An evaluation of the fixed measurement (static) results is provided in [1] and summarized in Section 3.
Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 11 of 2468 Table 1 Backfill Requirements and Available Onsite Fill Unconditional Release Surveys were designed and executed using the guidance provided in ZionSolutions procedure ZS-LT-400-001-001. Certain aspects of NUREG-1575, "Multi-Agency Radiation Survey and Site Investigation Manual" (MARSSIM) [4], like a graded approach, use of survey units, and suggested scan frequencies are included in ZS-LT-400-001-001. In addition, URS were designed and executed in accordance with ZS-LT-01, "Quality Assurance Project Plan for Characterization and FSS" (QAPP) [5]. This report does not include an evaluation of data collected for systems or miscellaneous/routine release surveys. 2.1.1Survey Units The following structures were unconditionally released, and the concrete, following the structure's demolition, was utilized as clean backfill:
Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 12 of 2468 Chlorination/Dechlorination Buildings (North and South) Contractor Break Building Crib House East/West Service Building ENC Fire Training Buildings Interim Radwaste Storage Facility (IRSF) Mechanical Maintenance Training Center (MMTC) NGET Old Gatehouse Old Sewage Lift Station South Gatehouse Turbine Building Unit 1 Containment Building (Exterior) Unit 2 Containment Building (Exterior) Vertical Concrete Cask (VCC) Pad In most cases, these structures were divided into multiple survey units depending on unique physical characteristics (e.g., size, number of elevations, accessibility, interior/exterior, etc.). Attachment Figure 1-1 displays a ZSRP site map that delineates where each structure is located. 2.2Unconditional Release Survey Approach ZionSolutions procedure ZS-LT-400-001-001 [2] provides guidance for performing URS on secondary side structural surfaces, systems, and miscellaneous M&E that are within or originated from non-Radiologically Controlled Areas (RCAs) at Zion. The guidance for performing URS on structures, systems, and M&E that are located within or originated from a posted RCA at ZNPS is presented in procedure RP-ZN-503, "Unconditional Release Survey Method from Radiologically Controlled Areas" [6]. The URS program is intended to prevent the inadvertent release of radioactive material offsite to the general public, through waste disposal, recycling, or asset recovery (i.e., sale or reuse of materials and equipment), by providing a controlled process for performance of graded and biased radiological assessment surveys and implementation of material control on secondary side structures, systems, and miscellaneous M&E. The program describes the protocols to be used to design, perform, control, evaluate and document radiological surveys to support unconditional release from, or for reuse at the ZNPS. 2.2.1Survey Design The survey design for URS begins with an assessment of the material to be surveyed for contamination potential. Historical information, previous relevant surveys, available process knowledge and visual observations are used to assess contamination potential and document the findings. The material is assigned a classification category commensurate with the standard MARSSIM classifications. If insufficient information is available to make an informed decision on the final classification of the surface and/or material and the basis for the final classification, then sentinel measurements may be acquired to support the classification. If the material is classified as "Class 1," then a graded survey approach will require the scan of 100% of all accessible surfaces, the assessment of loose surface Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 13 of 2468 contamination on all accessible surfaces and the assessment of internal non-accessible surfaces for potential internal contamination. Background was generally determined as the mean of 5 representative measurements (with some exceptions) taken within the area where the URS was to be performed or, as the mean of 5 representative measurements taken on known non-radioactive reference materials like the material that would undergo URS. Background and the basis for background are denoted in the URS documentation. Recommended minimum scan coverage for URS was established contingent upon classification and composition of the media (structural verse M&E). For Class 1 media, the process required 100% scan of all accessible surfaces and the assessment of internal non-accessible surfaces for potential internal contamination. For Class 2 and Class 3 media, the recommended minimum scan coverage is denoted in Table 2 below. Table 2 Recommended Scan Coverage (Class 2 and Class 3) Structural Surfaces Interior Item Class 3 Class 2 Floor 10% 25% Lower Walls (below 2 meters) 10% 25% Upper Walls (above 2 meters) 5% 10% Ceiling 5% 25% Exterior Item Class 3 Class 2 Lower Walls (below 2 meters) 10% 25% Upper Walls (above 2 meters) 5% 10% Roof 10% 25% M&E Item Class 3 Class 2 Exterior Surfaces1 10% 25% were taken within each scan location at the area of highest radioactivity identified during the scan. A smear sample was collected The location of direct measurements and/or samples that were taken were determined by the professional judgment of the responsible Radiological Engineer. Measurement/sample locations were pre-determined or based on real-time observations. Consideration was given to locations that exhibited the greatest potential for elevated radioactivity, including depressions, discolored areas, cracks, low point gravity drain points, and actual or potential spill locations. 1 Emphasis given to fan intakes, filter housings, vents and/or any other opening that could potentially allow for the contamination of internal surfaces.
Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 14 of 2468 2.2.2Instrumentation and Minimum Detectable Concentrations (MDCs) Measurement quality objectives are established in order to ensure that the survey instrumentation used, and survey and sampling methods used for URS would adequately and accurately characterize the material surveyed based on a release criterion of "no detectable radioactivity greater than background." The survey and sample analysis instrumentation selected for performing URS at ZSRP were consistent with the guidance found in NRC I.E. Circular No. 81-07, "Control of Radioactively Contaminated Materials" [7], HPPOS-071, "Control of Radioactively Contaminated Material" [8], and HPPOS-073, "Surveys of Wastes from Nuclear Reactor Facilities Before Disposal" [9]. The range, ruggedness, sensitivity, detection capability and quantification capability were confirmed through instrumentation calibration. The implementation of instrument training, the use of operating procedures and survey plan instructions ensured that the measurement method uncertainty remained consistent. The instruments used included the following: Ludlum Model 2350-1 Data Logger coupled with gas-flow proportional detectors; Ludlum Model 43-68 and 43-37, and Sodium Iodide (NaI) detector Ludlum Model 44-10. Ludlum Model 2360 Data Logger coupled with Ludlum Model 43-93 scintillator detectors. Tennelec 3030P Alpha-Beta proportional smear counter. Typically, field background was determined as the mean of 5 background measurements collected as ambient area or as material specific background. Values for critical level (LC) and detection level (LD) were derived after the arithmetic mean of background (bkgd) was calculated. Equation 1 = 2.33 bkgd Equation 2 = 3+4.65 bkgd Action Levels An "Action Level" is defined as the numerical value that will cause the decision maker to choose an alternative action. For URS, measurements indicating radioactive material at concentrations in excess of the action level will prompt the alternative action that rejects the acceptability of releasing the material for unrestricted use and the disposition of the material as radioactive. For URS, the action level is the based on the unrestricted release criterion of no detectable radioactivity greater than background. The instrument alarm setpoint is set to the action level. Typically, when the action level was exceeded, an investigation was performed, which generally consisted of a portable gamma spectroscopy measurement (Canberra Inspector-1000 LaBr Detector) to qualify the activity. - The action level for unrestricted release was based on the detector background plus the scan MDCR of the instrument. The scan MDCR was calculated by applying the following equation: Equation 3 =60db1x60 Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 15 of 2468 Where: Scan MDCR = Minimum detectable a priori count rate. d' = Detectability value associated with the desired performance. For URS, a value of 1.38 is used, based on a 95% correct detection rate and a false positive rate of 60%. bi = Background counts (cpm). i = Observation interval (seconds). p = Surveyor efficiency. A value of 0.5 is used. The observation interval (i) is the amount of time required for the detector field of view to pass over the area of concern. This time depended upon the scan speed, the size of the source, and the fraction of the detector's sensitive area that passed over the source. The following inst Table 3 Instrument Detector Detector Window Area Window Width (cm2) inches cm Model 2350-1 Model 43-68 126.0 3.47 8.81 Model 2360 Model 43-93 101.0 2.73 6.93 Model 2350-1 Model 43-37 584.0 5.25 13.34 The Model 43-37 is a floor monitor. It is conveyed at a scan speed of one detector width (5.25 inches) per second. Consequently, the observation interval (i) for the Model 43-37 is 1. Based on the detector dimensions for the Model 43-68 and Model 43-93 detectors specified in Table 1, the following observation intervals (i) can be derived for the following scan speeds: Table 4 Scan Speeds and Corresponding Observation Intervals (i) Detector Scan Speed Observation Interval (i) Scan Speed Observation Interval (i) Scan Speed Observation Interval (i) Model 43-68 4 0.868 2 1.735 1 3.47 Model 43-93 4 0.683 2 1.365 1 2.73 Using the equation for MDCR and a detectability value (d') of 1.38 (based on a 95% correct detection rate and a false positive rate of 60%), a surveyor efficiency (p) of 0.5, and the observation intervals (i) for each detector based on scan speeds listed in Table 4, the action levels based on MDCR plus background are calculated and shown inTable 5 through Table 7 for each of the detectors used. The presence of radioactivity in excess of the action level is an indication of detectable radioactivity greater than background.
Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 16 of 2468 Table 5 MDCR and Action Levels (in cpm) for Model 43-37 Background Scan Speed - MDCR Action Level 200 214 414 300 262 562 400 302 702 500 338 838 600 370 970 700 400 1100 800 428 1228 900 454 1354 1000 478 1478 1500 585 2085 2000 676 2676 2500 756 3256 3000 828 3828 Table 6 MDCR and Action Levels (in cpm) for Model 43-68 Background Scan Speed - Scan Speed - Scan Speed - MDCR Action Level MDCR Action Level MDCR Action Level 200 115 315 162 362 288 488 300 141 441 199 499 341 641 400 162 562 230 630 385 785 500 181 681 257 757 424 924 600 199 799 281 881 459 1059 700 215 915 304 1004 491 1191 800 230 1030 325 1125 521 1321 900 243 1143 344 1244 549 1449 1000 257 1257 363 1363 575 1575 1500 314 1814 444 1944 691 2191 2000 363 2363 513 2513 789 2789 2500 406 2906 574 3074 875 3375 3000 444 3444 629 3629 953 3953 Table 7 MDCR and Action Levels (in cpm) for Model 43-93 Background Scan Speed - Scan Speed - Scan Speed - MDCR Action Level MDCR Action Level MDCR Action Level 200 129 329 206 406 374 781 300 141 441 253 693 433 1126 400 162 562 292 854 489 1343 500 181 681 326 1008 539 1546 600 199 799 357 1156 583 1739 700 215 915 386 1301 624 1925 Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 17 of 2468 Background Scan Speed - Scan Speed - Scan Speed - MDCR Action Level MDCR Action Level MDCR Action Level 800 230 1030 413 1442 662 2104 900 243 1143 438 1581 698 2279 1000 257 1257 461 1718 731 2449 1500 314 1814 565 2379 879 3258 2000 363 2363 652 3015 1003 4018 2500 406 2906 729 3635 1112 4747 3000 444 3444 799 4243 1211 5454 Once MDCR was calculated, the instrument MDC was derived at a 95% confidence level using the following equation: Equation 4 = ()() Where: MDCscan = Minimum Detectable Concentration (cpm). t = Total efficiency of instrument. bi = Background counts (cpm). A = Detector area (cm2).
- Equation 5 =..100 Where: MDCstatic = Minimum Detectable Concentration (dpm/100 cm2). ts = Sample Count Time. tb = Background Count Time. Rb = Background Count Rate (cpm). t = Total efficiency of instrument. A = Detector area (cm2).
Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 18 of 2468 2.3Unconditional Release Survey Implementation A URS sample plan was prepared for each of the 16 survey area specified below in accordance with ZionSolutions procedure ZS-LT-400-001-001. The results are summarized in the sections that follow and the detailed records for each of the 115 survey units is provided in Attachment 1 and Attachment 2. 2.3.1Chlorination/Dechlorination Buildings 2.3.1.109300 - Chlorination/Dechlorination Buildings Interior and Exterior Classifications: All surfaces: Class 2 The survey design for this survey unit called for a 25% scan coverage on the lower walls and floor and a 5% scan coverage on the upper walls and ceiling. The surfaces were scanned using a Ludlum Model 2350-1 with a Ludlum 43-68 detector or a Ludlum Model 2350-1 with a Ludlum 44-10 detector. The range of observed background in the survey unit was 191 cpm to 5,940 cpm, with an average background of 1,177 cpm. Two (2) scan alarms were observed in this survey unit with the scan alarm set-point set at the MDCR plus background. The Canberra Inspector-1000 LaBr detector was deployed in response, and no plant-related activity was discovered. Seventy-four (74) static measurements were collected in the survey unit to satisfy the requirement of at least one (1) static measurement, at the highest scan indication, per scan grid. The Ludlum 2350-1 with a Ludlum 43-68 detector was used to acquire static measurements. The maximum activity observed in the survey unit was 808 cpm (3,232 dpm/100 cm2), with an average activity of 223 cpm (892 dpm/100 cm2). Two (2) alarms were observed during the collection of static measurements for this survey unit with the static alarm set-point set at MDCR plus background. The actions performed in response to the static measurement alarms are commensurate with the actions described in the scan summary above. The maximum static MDC observed for the survey unit was 605 dpm/100 cm2. All smear results were less than the respective MDC for alpha and beta contamination. Two (2) oil samples were collected from de-chlorination pumps within the survey unit. Gamma spectroscopy analysis identified no plant-derived radionuclides. 2.3.2Contractor Break Building 2.3.2.109701 - Contractor Break Building Interior Classifications: Lower walls and floor: Class 2 Upper walls and ceiling: Class 3 The survey design for this survey unit called for a 25% scan coverage on the lower walls and floor and a 5% scan coverage on the upper walls and ceiling. The surfaces were scanned using a Ludlum Model 2350-1 with a Ludlum 43-68 detector or a Ludlum Model 2350-1 with a Ludlum 43-37 detector. The range of observed background in the survey unit was 170 cpm to 1,476 cpm, with an average background of 458 cpm. No scan alarms were observed in this survey unit with the scan alarm set-point set at the MDCR plus background.
Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 19 of 2468 Twenty-six (26) static measurements were collected in the survey unit to satisfy the requirement of at least one (1) static measurement, at the highest scan indication, per scan grid. The Ludlum 2350-1 with a Ludlum 43-68 detector was used to acquire static measurements. The maximum activity observed in the survey unit was 410 cpm (1,640 dpm/100 cm2), with an average activity of 275 cpm (1,099 dpm/100 cm2). No alarms were observed during the collection of static measurements for this survey unit with the static alarm set-point set at MDCR plus background. The maximum static MDC observed for the survey unit was 639 dpm/100 cm2. All smear results were less than the respective MDC for alpha and beta contamination. 2.3.2.209702 & 09703 - Contractor Break Building Exterior Classifications: Lower walls and roof: Class 2 Upper walls: Class 3 The survey design for this survey unit called for a 25% scan coverage on the lower walls and roof and a 5% scan coverage on the upper walls. The surfaces were scanned using a Ludlum Model 2350-1 with a Ludlum 43-68 detector or a Ludlum Model 2350-1 with a Ludlum 43-37 detector. The range of observed background in the survey unit was 163 cpm to 499 cpm, with an average background of 280 cpm. No scan alarms were observed in this survey unit with the scan alarm set-point set at the MDCR plus background. Twenty-two (22) static measurements were collected in the survey unit to satisfy the requirement of at least one (1) static measurement, at the highest scan indication, per scan grid. The Ludlum 2350-1 with a Ludlum 43-68 detector was used to acquire static measurements. The maximum activity observed in the survey unit was 376 cpm (1,504 dpm/100 cm2), with an average activity of 252 cpm (1,006 dpm/100 cm2). No alarms were observed during the collection of static measurements for this survey unit with the static alarm set-point set at MDCR plus background. The maximum static MDC observed for the survey unit was 523 dpm/100 cm2. All smear results were less than the respective MDC for alpha and beta contamination. 2.3.3Crib House 2.3.3.108200A - Crib House Circulatory Water Motor Room Classifications: Interior and exterior surfaces: Class 3 The survey design for this survey unit called for a 10% scan coverage on the lower walls and floor and a 5% scan coverage on the upper walls and ceiling. The surfaces were scanned using a Ludlum Model 2350-1 with a Ludlum 43-68 detector or a Ludlum Model 2350-1 with a Ludlum 43-37 detector. The range of observed background in the survey unit was 292 cpm to 377 cpm, with an average background of 331 cpm. No scan alarms were observed in this survey unit with the scan alarm set-point set at the MDCR plus background. Forty-eight (48) static measurements were collected in the survey unit to satisfy the requirement of at least one (1) static measurement, at the highest scan indication, per scan grid. The Ludlum 2350-1 with a Ludlum 43-68 detector was used to acquire static measurements. The maximum activity observed in the Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 20 of 2468 survey unit was 372 cpm (1,488 dpm/100 cm2), with an average activity of 294 cpm (1,174 dpm/100 cm2). No alarms were observed during the collection of static measurements for this survey unit with the static alarm set-point set at MDCR plus background. The maximum static MDC observed for the survey unit was 456 dpm/100 cm2. All smear results were less than the respective MDC for alpha and beta contamination. 2.3.3.208200B - Crib House Fire Pump Room Classifications: Interior surfaces: Class 3 The survey design for this survey unit called for a 10% scan coverage on the lower walls and floor and a 5% scan coverage on the upper walls and ceiling. The surfaces were scanned using a Ludlum Model 2350-1 with a Ludlum 43-68 detector or a Ludlum Model 2350-1 with a Ludlum 43-37 detector. The range of observed background in the survey unit was 165 cpm to 313 cpm, with an average background of 237 cpm. No scan alarms were observed in this survey unit with the scan alarm set-point set at the MDCR plus background. Forty-Two (42) static measurements were collected in the survey unit to satisfy the requirement of at least one (1) static measurement, at the highest scan indication, per scan grid. The Ludlum 2350-1 with a Ludlum 43-68 detector was used to acquire static measurements. The maximum activity observed in the survey unit was 363 cpm (1,452 dpm/100 cm2), with an average activity of 256 cpm (1,024 dpm/100 cm2). No alarms were observed during the collection of static measurements for this survey unit with the static alarm set-point set at MDCR plus background. The maximum static MDC observed for the survey unit was 532 dpm/100 cm2. All smear results were less than the respective MDC for alpha and beta contamination. 2.3.3.308200C - Crib House 592' Traveling Screen and Strainer Room Classifications: Interior surfaces: Class 3 The survey design for this survey unit called for a 10% scan coverage on the lower walls and floor and a 5% scan coverage on the upper walls and ceiling. The surfaces were scanned using a Ludlum Model 2350-1 with a Ludlum 43-68 detector or a Ludlum Model 2350-1 with a Ludlum 43-37 detector. The range of observed background in the survey unit was 244 cpm to 369 cpm, with an average background of 308 cpm. No scan alarms were observed in this survey unit with the scan alarm set-point set at the MDCR plus background. Forty-Two (42) static measurements were collected in the survey unit to satisfy the requirement of at least one (1) static measurement, at the highest scan indication, per scan grid. The Ludlum 2350-1 with a Ludlum 43-68 detector was used to acquire static measurements. The maximum activity observed in the survey unit was 436 cpm (1,744 dpm/100 cm2), with an average activity of 292 cpm (1,166 dpm/100 cm2). No alarms were observed during the collection of static measurements for this survey unit with the static alarm set-point set at MDCR plus background. The maximum static MDC observed for the survey unit was 561 dpm/100 cm2. All smear results were less than the respective MDC for alpha and beta contamination.
Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 21 of 2468 Six (6) oil samples were collected from the traveling screen pumps within the survey unit. Gamma spectroscopy analysis identified no plant-derived radionuclides. 2.3.3.408301 - Crib House Exterior Classifications: Exterior surfaces: Class 2 The survey design for this survey unit called for a 10% scan coverage on the lower walls, a 5% scan coverage on the upper walls, a 25% scan coverage on the roof, and a 25% scan coverage on the Crib House exterior surfaces. The surfaces were scanned using a Ludlum Model 2350-1 with a Ludlum 43-68 detector or a Ludlum Model 2350-1 with a Ludlum 43-37 detector. The range of observed background in the survey unit was 235 cpm to 952 cpm, with an average background of 541 cpm. Twelve (12) scan alarms were observed in this survey unit with the scan alarm set-point set at the MDCR plus background. The Canberra Inspector-1000 LaBr detector was deployed in response to the alarms, and no plant-related activity was discovered. Sixty-four (64) static measurements were collected in the survey unit to satisfy the requirement of at least one (1) static measurement, at the highest scan indication, per scan grid. The Ludlum 2350-1 with a Ludlum 43-68 detector was used to acquire static measurements. The maximum activity observed in the survey unit was 968 cpm (3,872 dpm/100 cm2), with an average activity of 495 cpm (1,979 dpm/100 cm2). Five (5) alarms were observed during the collection of static measurements for this survey unit with the static alarm set-point set at MDCR plus background. The Canberra Inspector-1000 LaBr detector was deployed in response to the alarms, and no plant-related activity was discovered. The maximum static MDC observed for the survey unit was 735 dpm/100 cm2. All smear results were less than the respective MDC for alpha and beta contamination. 2.3.4East/West Service Building 2.3.4.107001A - East Service Building Elevator Classifications: Interior surfaces and components: Class 3 The survey design for this survey unit called for a 10% scan coverage on all surfaces and components in the survey unit. The surfaces and components were scanned using a Ludlum Model 2350-1 with a Ludlum 43-68 detector or a Ludlum Model 2350-1 with a Ludlum 43-37 detector. The range of observed background in the survey unit was 164 cpm to 377 cpm, with an average background of 255 cpm. No scan alarms were observed in this survey unit with the scan alarm set-point set at the MDCR plus background. Twenty-one (21) static measurements were collected in the survey unit to satisfy the requirement of at least one (1) static measurement, at the highest scan indication, per scan grid. The Ludlum 2350-1 with a Ludlum 43-68 detector was used to acquire static measurements. The maximum activity observed in the survey unit was 400 cpm (1,600 dpm/100 cm2), with an average activity of 257 cpm (1,061 dpm/100 cm2). No alarms were observed during the collection of static measurements for this survey unit with the static alarm set-point set at MDCR plus background. The maximum static MDC observed for the survey unit was 297 dpm/100 cm2.
Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 22 of 2468 All smear results were less than the respective MDC for alpha and beta contamination. Two (2) oil samples were collected from elevator motors within the survey unit. Gamma spectroscopy analysis identified only natural radioactivity. 2.3.4.207001B - East Service Building Ventilation Classifications: Interior surfaces and components: Class 3 Three (3) measurements were collected with the Canberra Inspector-1000 LaBr detector prior to URS in the survey unit. These measurements were collected on three (3) filters from air conditioning units on the roof of the East Service Building. All three (3) measurements showed a positive identification of Co-60. Portions of the filters from each AC unit were analyzed using on-site gamma spectroscopy, and no plant-derived radionuclides were identified. The survey design for this survey unit called for a 10% scan coverage on all surfaces and components in the survey unit. The surfaces and components were scanned using a Ludlum Model 2350-1 with a Ludlum 43-68 detector or a Ludlum Model 2350-1 with a Ludlum 43-37 detector. The range of observed background in the survey unit was 159 cpm to 504 cpm, with an average background of 252 cpm. Nineteen (19) scan alarms were observed in this survey unit with the scan alarm set-point set at the MDCR plus background. All alarms occurred during survey of various filters within the survey unit. As a response to the alarms, the Inspector was deployed. Seven (7) measurements were acquired with the Inspector, one (1) of which showed a positive identification of Co-60. The filters were dispositioned as radioactive waste. Sixty (60) static measurements were collected in the survey unit to satisfy the requirement of at least one (1) static measurement, at the highest scan indication, per scan grid. The Ludlum 2350-1 with a Ludlum 43-68 detector was used to acquire static measurements. The maximum activity observed in the survey unit was 1,009 cpm (4,036 dpm/100 cm2), with an average activity of 305 cpm (1,220 dpm/100 cm2). Six (6) alarms were observed during the collection of static measurements for this survey unit with the static alarm set-point set at MDCR plus background. The actions performed in response to the static measurement alarms are commensurate with the actions described in the scan summary above. The maximum static MDC observed for the survey unit was 338 dpm/100 cm2. One (1) smear result was sent to the on-site laboratory for gamma spectroscopy analysis. The gamma spectroscopy analysis results showed no plant-derived radioactivity. All the other smears were less than the respective MDC for alpha and beta contamination. 2.3.4.307001C - East Service Building South Stairwell Classifications: Interior surfaces: Class 3 The survey design for this survey unit called for a 10% scan coverage on the floor and lower walls, a 3% scan coverage on the ceiling and upper walls, and a 5% scan coverage on the stairs and landings. The surfaces were scanned using a Ludlum Model 2350-1 with a Ludlum 43-68 detector or a Ludlum Model 2350-1 with a Ludlum 43-37 detector. The range of observed background in the survey unit was 199 cpm to 406 cpm, with an average background of 307 cpm. Two (2) scan alarms were observed in this Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 23 of 2468 survey unit with the scan alarm set-point set at the MDCR plus background. The area where the elevated activity was observed was investigated by additional scans, which also resulted in alarms. The Canberra Inspector-1000 LaBr detector was deployed in response, and no plant-related activity was discovered. Thirty (30) static measurements were collected in the survey unit to satisfy the requirement of at least one (1) static measurement, at the highest scan indication, per scan grid. The Ludlum 2350-1 with a Ludlum 43-68 detector was used to acquire static measurements. The maximum activity observed in the survey unit was 472 cpm (1,888 dpm/100 cm2), with an average activity of 290 cpm (1,162 dpm/100 cm2). No alarms were observed during the collection of static measurements for this survey unit with the static alarm set-point set at MDCR plus background. The maximum static MDC observed for the survey unit was 326 dpm/100 cm2. All smear results were less than the respective MDC for alpha and beta contamination. 2.3.4.407001D - East Service Building North Stairwell Classifications: Interior surfaces: Class 3 The survey design for this survey unit called for a 10% scan coverage on the floor and lower walls, a 5% scan coverage on the ceiling and upper walls, and a 5% scan coverage on the stairs and landings. The surfaces were scanned using a Ludlum Model 2350-1 with a Ludlum 43-68 detector or a Ludlum Model 2350-1 with a Ludlum 43-37 detector. The range of observed background in the survey unit was 257 cpm to 299 cpm, with an average background of 278 cpm. No scan alarms were observed in this survey unit with the scan alarm set-point set at the MDCR plus background. The maximum static MDC observed for the survey unit was 388 dpm/100 cm2. Thirty (30) static measurements were collected in the survey unit to satisfy the requirement of at least one (1) static measurement, at the highest scan indication, per scan grid. The Ludlum 2350-1 with a Ludlum 43-68 detector was used to acquire static measurements. The maximum activity observed in the survey unit was 351 cpm (1,404 dpm/100 cm2), with an average activity of 261 cpm (1,045 dpm/100 cm2). No alarms were observed during the collection of static measurements for this survey unit with the static alarm set-point set at MDCR plus background. All smear results were less than the respective MDC for alpha and beta contamination. 2.3.4.507002A - West Service Building Stairwell S-1 Classifications: Interior surfaces: Class 3 The survey design for this survey unit called for a 5% scan coverage on all surfaces in the survey unit. The surfaces were scanned using a Ludlum Model 2350-1 with a Ludlum 43-68 detector or a Ludlum Model 2350-1 with a Ludlum 43-37 detector. The range of observed background in the survey unit was 298 cpm to 405 cpm, with an average background of 344 cpm. No scan alarms were observed in this survey unit with the scan alarm set-point set at the MDCR plus background. Thirty (30) static measurements were collected in the survey unit to satisfy the requirement of at least one (1) static measurement, at the highest scan indication, per scan grid. The Ludlum 2350-1 with a Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 24 of 2468 Ludlum 43-68 detector was used to acquire static measurements. The maximum activity observed in the survey unit was 445 cpm (1,780 dpm/100 cm2), with an average activity of 325 cpm (1,299 dpm/100 cm2). No alarms were observed during the collection of static measurements for this survey unit with the static alarm set-point set at MDCR plus background. The maximum static MDC observed for the survey unit was 592 dpm/100 cm2. All smear results were less than the respective MDC for alpha and beta contamination. 2.3.4.607002B - West Service Building Stairwell S-2 Classifications: Lower walls, floor, hallway, stairs: Class 2 Upper walls and ceiling: Class 3 The survey design for this survey unit called for a 25% scan coverage on the floor and lower walls, hallway floor and walls, and stairs and platforms. The survey design called for a 5% scan coverage on the ceiling and upper walls. The surfaces were scanned using a Ludlum Model 2350-1 with a Ludlum 43-68 detector or a Ludlum Model 2350-1 with a Ludlum 43-37 detector. The range of observed background in the survey unit was 249 cpm to 396 cpm, with an average background of 304 cpm. No scan alarms were observed in this survey unit with the scan alarm set-point set at the MDCR plus background. Twenty-five (25) static measurements were collected in the survey unit to satisfy the requirement of at least one (1) static measurement, at the highest scan indication, per scan grid. The Ludlum 2350-1 with a Ludlum 43-68 detector was used to acquire static measurements. The maximum activity observed in the survey unit was 369 cpm (1,476 dpm/100 cm2), with an average activity of 290 cpm (1,162 dpm/100 cm2). No alarms were observed during the collection of static measurements for this survey unit with the static alarm set-point set at MDCR plus background. The maximum static MDC observed for the survey unit was 688 dpm/100 cm2. All smear results were less than the respective MDC for alpha and beta contamination. 2.3.4.707002C - West Service Building Stairwell S-3 Classifications: Interior surfaces: Class 3 The survey design for this survey unit called for a 5% scan coverage on all surfaces in the survey unit. The surfaces were scanned using a Ludlum Model 2350-1 with a Ludlum 43-68 detector or a Ludlum Model 2350-1 with a Ludlum 43-37 detector. The range of observed background in the survey unit was 265 cpm to 302 cpm, with an average background of 286 cpm. No scan alarms were observed in this survey unit with the scan alarm set-point set at the MDCR plus background. Four (4) static measurements were collected in the survey unit to satisfy the requirement of at least one (1) static measurement, at the highest scan indication, per scan grid. The Ludlum 2350-1 with a Ludlum 43-68 detector was used to acquire static measurements. The maximum activity observed in the survey unit was 337 cpm (1,348 dpm/100 cm2), with an average activity of 278 cpm (1,348 dpm/100 cm2). No alarms were observed during the collection of static measurements for this survey unit with the static alarm set-point set at MDCR plus background. The maximum static MDC observed for the survey unit was 519 dpm/100 cm2.
Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 25 of 2468 All smear results were less than the respective MDC for alpha and beta contamination. 2.3.4.807101 - East Service Building 592' Elevation Classifications: Interior surfaces: Class 3 The survey design for this survey unit called for a 10% scan coverage on the floor, lower walls, and interior cubicle walls and a 5% scan coverage on the ceiling and upper walls. The surfaces were scanned using a Ludlum Model 2350-1 with a Ludlum 43-68 detector or a Ludlum Model 2350-1 with a Ludlum 43-37 detector. The range of observed background in the survey unit was 195 cpm to 576 cpm, with an average background of 339 cpm. No scan alarms were observed in this survey unit with the scan alarm set-point set at the MDCR plus background. Sixty-nine (69) static measurements were collected in the survey unit to satisfy the requirement of at least one (1) static measurement, at the highest scan indication, per scan grid. The Ludlum 2350-1 with a Ludlum 43-68 detector was used to acquire static measurements. The maximum activity observed in the survey unit was 549 cpm (2,196 dpm/100 cm2), with an average activity of 284 cpm (1,137 dpm/100 cm2). No alarms were observed during the collection of static measurements for this survey unit with the static alarm set-point set at MDCR plus background. The maximum static MDC observed for the survey unit was 650 dpm/100 cm2. All smear results were less than the respective MDC for alpha and beta contamination. 2.3.4.907102A - West Service Building 592' Elevation Classifications: Floor: Class 1 Lower walls: Class 2 Upper walls and ceiling: Class 3 The survey design for this survey unit called for a 100% scan coverage on the floor, a 25% scan coverage on the lower walls, and a 5% scan coverage on the upper walls and ceiling. The surfaces were scanned using a Ludlum Model 2350-1 with a Ludlum 43-68 detector or a Ludlum Model 2350-1 with a Ludlum 43-37 detector. The range of observed background in the survey unit was 177 cpm to 1254 cpm, with an average background of 569 cpm. Four (4) scan alarms were observed in this survey unit with the scan alarm set-point set at the MDCR plus background. For grid 55, the Canberra Inspector-1000 LaBr detector was deployed and no plant-derived radioactivity was identified. For grids 14 and 15, the elevated areas were bounded and removed. The grids were resurveyed with no alarms. For grid 12, a discrete radioactive particle was discovered and disposed of. The gamma spectroscopy report for the particle positively identified Co-60 at 1.62E- Eighty-three (83) static measurements were collected in the survey unit to satisfy the requirement of at least one (1) static measurement, at the highest scan indication, per scan grid. The Ludlum 2350-1 with a Ludlum 43-68 detector was used to acquire static measurements. The maximum activity observed in the survey unit was 500 cpm (2,000 dpm/100 cm2), with an average activity of 331 cpm (1,324 dpm/100 cm2). Six (6) alarms were observed during the collection of static measurements for this survey unit with the static alarm set-point set at MDCR plus background. The actions taken in response to these static Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 26 of 2468 alarms are concurrent with the actions in the scan summary section above. The maximum static MDC observed for the survey unit was 697 dpm/100 cm2. All smear results were less than the respective MDC for alpha and beta contamination. Seven (7) oil samples were collected from various mechanical components within the survey unit. Gamma spectroscopy analysis identified only natural radioactivity in six (6) of the seven (7) samples. One (1) sample was positive for Cs-137 with an activity of 1.90E-02 pCi/mL. 2.3.4.1007102B - West Service Building 592' Elevation Classifications: Floor: Class 1 Lower walls: Class 2 Ceiling and grating: Class 3 The survey design for this survey unit called for a 100% scan coverage on the floor, a 25% scan coverage on the ceiling and lower walls, and a 5% scan coverage on the roof and grating. The surfaces were scanned using a Ludlum Model 2350-1 with a Ludlum 43-68 detector or a Ludlum Model 2350-1 with a Ludlum 43-37 detector. The range of observed background in the survey unit was 178 cpm to 1009 cpm, with an average background of 353 cpm. No scan alarms were observed in this survey unit with the scan alarm set-point set at the MDCR plus background. Forty-five (45) static measurements were collected in the survey unit to satisfy the requirement of at least one (1) static measurement, at the highest scan indication, per scan grid. The Ludlum 2350-1 with a Ludlum 43-68 detector was used to acquire static measurements. The maximum activity observed in the survey unit was 662 cpm (2,648 dpm/100 cm2), with an average activity of 264 cpm (1,057 dpm/100 cm2). No alarms were observed during the collection of static measurements for this survey unit with the static alarm set-point set at MDCR plus background. The maximum static MDC observed for the survey unit was 603 dpm/100 cm2. All smear results were less than the respective MDC for alpha and beta contamination. 2.3.4.1107102C - West Service Building 592' Elevation Classifications: Floor and lower walls: Class 2 Upper walls and ceiling: Class 3 The survey design for this survey unit called for a 25% scan coverage on the floor and lower walls and a 5% scan coverage on the ceiling and upper walls. The surfaces were scanned using a Ludlum Model 2350-1 with a Ludlum 43-68 detector or a Ludlum Model 2350-1 with a Ludlum 43-37 detector. The range of observed background in the survey unit was 211 cpm to 1011 cpm, with an average background of 470 cpm. One (1) scan alarm was observed in this survey unit with the scan alarm set-point set at the MDCR plus background. The area was cleaned with tape presses as a response to the alarm, and resurvey of the location produced no alarms. Thirty-seven (37) static measurements were collected in the survey unit to satisfy the requirement of at least one (1) static measurement, at the highest scan indication, per scan grid. The Ludlum 2350-1 with a Ludlum 43-68 detector was used to acquire static measurements. The maximum activity observed in the Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 27 of 2468 survey unit was 367 cpm (1,468 dpm/100 cm2), with an average activity of 274 cpm (1,098 dpm/100 cm2). One (1) alarm was observed during the collection of static measurements for this survey unit with the static alarm set-point set at MDCR plus background. The actions taken are concurrent with the actions in the scan summary above. The maximum static MDC observed for the survey unit was 568 dpm/100 cm2. All smear results were less than the respective MDC for alpha and beta contamination. 2.3.4.1207102D - West Service Building 592' Elevation Classifications: Floor and lower walls: Class 2 Upper walls and ceiling: Class 3 The survey design for this survey unit called for a 25% scan coverage on the floor and lower walls, a 5% scan coverage on the ceiling and upper walls, and a 25% scan coverage on the tool cabinets left in the survey unit. The surfaces were scanned using a Ludlum Model 2350-1 with a Ludlum 43-68 detector or a Ludlum Model 2350-1 with a Ludlum 43-37 detector. The range of observed background in the survey unit was 165 cpm to 442 cpm, with an average background of 286 cpm. No scan alarms were observed in this survey unit with the scan alarm set-point set at the MDCR plus background. One hundred fifty-seven (157) static measurements were collected in the survey unit to satisfy the requirement of at least one (1) static measurement, at the highest scan indication, per scan grid. The Ludlum 2350-1 with a Ludlum 43-68 detector was used to acquire static measurements. The maximum activity observed in the survey unit was 405 cpm (1,620 dpm/100 cm2), with an average activity of 245 cpm (981 dpm/100 cm2). No alarms were observed during the collection of static measurements for this survey unit with the static alarm set-point set at MDCR plus background. The maximum static MDC observed for the survey unit was 623 dpm/100 cm2. All smear results were less than the respective MDC for alpha and beta contamination. 2.3.4.1307102E - West Service Building 592' Elevation Classifications: Floor and lower walls: Class 2 Upper walls and ceiling: Class 3 The survey design for this survey unit called for a 25% scan coverage on the floor and lower walls and a 5% scan coverage on the ceiling and upper walls. The surfaces were scanned using a Ludlum Model 2350-1 with a Ludlum 43-68 detector or a Ludlum Model 2350-1 with a Ludlum 43-37 detector. The range of observed background in the survey unit was 222 cpm to 500 cpm, with an average background of 353 cpm. No scan alarms were observed in this survey unit with the scan alarm set-point set at the MDCR plus background. Thirty-eight (38) static measurements were collected in the survey unit to satisfy the requirement of at least one (1) static measurement, at the highest scan indication, per scan grid. The Ludlum 2350-1 with a Ludlum 43-68 detector was used to acquire static measurements. The maximum activity observed in the survey unit was 503 cpm (2,012 dpm/100 cm2), with an average activity of 330 cpm (1,318 dpm/100 cm2). No alarms were observed during the collection of static measurements for this survey unit with Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 28 of 2468 the static alarm set-point set at MDCR plus background. The maximum static MDC observed for the survey unit was 662 dpm/100 cm2. All smear results were less than the respective MDC for alpha and beta contamination. 2.3.4.1407201 - East Service Building 608' Elevation Classifications: Interior surfaces: Class 3 The survey design for this survey unit called for a 10% scan coverage on the floor and lower walls, a 5% scan coverage on the ceiling and upper walls, and a 10% scan coverage on the office cubicle walls. The surfaces were scanned using a Ludlum Model 2350-1 with a Ludlum 43-68 detector or a Ludlum Model 2350-1 with a Ludlum 43-37 detector. The range of observed background in the survey unit was 181 cpm to 637 cpm, with an average background of 345 cpm. No scan alarms were observed in this survey unit with the scan alarm set-point set at the MDCR plus background. One hundred and six (106) static measurements were collected in the survey unit to satisfy the requirement of at least one (1) static measurement, at the highest scan indication, per scan grid. The Ludlum 2350-1 with a Ludlum 43-68 detector was used to acquire static measurements. The maximum activity observed in the survey unit was 601 cpm (2,404 dpm/100 cm2), with an average activity of 282 cpm (1,127 dpm/100 cm2). No alarms were observed during the collection of static measurements for this survey unit with the static alarm set-point set at MDCR plus background. The maximum static MDC observed for the survey unit was 388 dpm/100 cm2. All smear results were less than the respective MDC for alpha and beta contamination. 2.3.4.1507202 - West Service Building 608' Elevation Classifications: Interior surfaces: Class 3 The survey design for this survey unit called for a 10% scan coverage on the floor and lower walls and a 5% scan coverage on the ceiling and upper walls. The surfaces were scanned using a Ludlum Model 2350-1 with a Ludlum 43-68 detector or a Ludlum Model 2350-1 with a Ludlum 43-37 detector. The range of observed background in the survey unit was 191 cpm to 482 cpm, with an average background of 329 cpm. No scan alarms were observed in this survey unit with the scan alarm set-point set at the MDCR plus background. Eighty-six (86) static measurements were collected in the survey unit to satisfy the requirement of at least one (1) static measurement, at the highest scan indication, per scan grid. The Ludlum 2350-1 with a Ludlum 43-68 detector was used to acquire static measurements. The maximum activity observed in the survey unit was 508 cpm (2,032 dpm/100 cm2), with an average activity of 275 cpm (1,098 dpm/100 cm2). No alarms were observed during the collection of static measurements for this survey unit with the static alarm set-point set at MDCR plus background. The maximum static MDC observed for the survey unit was 662 dpm/100 cm2. All smear results were less than the respective MDC for alpha and beta contamination.
Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 29 of 2468 2.3.4.1607301 - East Service Building 624' Elevation Classifications: Interior surfaces: Class 3 The survey design for this survey unit called for a 10% scan coverage on the floor and lower walls, a 5% scan coverage on the ceiling and upper walls, a 10% scan coverage on the cubicle lower walls, and a 5% scan coverage on the cubicle upper walls. The surfaces were scanned using a Ludlum Model 2350-1 with a Ludlum 43-68 detector or a Ludlum Model 2350-1 with a Ludlum 43-37 detector. The range of observed background in the survey unit was 292 cpm to 679 cpm, with an average background of 449 cpm. No scan alarms were observed in this survey unit with the scan alarm set-point set at the MDCR plus background. Eighty-six (86) static measurements were collected in the survey unit to satisfy the requirement of at least one (1) static measurement, at the highest scan indication, per scan grid. The Ludlum 2350-1 with a Ludlum 43-68 detector was used to acquire static measurements. The maximum activity observed in the survey unit was 589 cpm (2,356 dpm/100 cm2), with an average activity of 294 cpm (1,174 dpm/100 cm2). No alarms were observed during the collection of static measurements for this survey unit with the static alarm set-point set at MDCR plus background. The maximum static MDC observed for the survey unit was 376 dpm/100 cm2. All smear results were less than the respective MDC for alpha and beta contamination. 2.3.4.1707302 - West Service Building 624' Elevation Classifications: Interior surfaces: Class 3 The survey design for this survey unit called for a 10% scan coverage on the floor and lower walls and a 5% scan coverage on the ceiling and upper walls. The surfaces were scanned using a Ludlum Model 2350-1 with a Ludlum 43-68 detector or a Ludlum Model 2350-1 with a Ludlum 43-37 detector. The range of observed background in the survey unit was 224 cpm to 1487 cpm, with an average background of 584 cpm. No scan alarms were observed in this survey unit with the scan alarm set-point set at the MDCR plus background. Seventy (70) static measurements were collected in the survey unit to satisfy the requirement of at least one (1) static measurement, at the highest scan indication, per scan grid. The Ludlum 2350-1 with a Ludlum 43-68 detector was used to acquire static measurements. The maximum activity observed in the survey unit was 548 cpm (2,192 dpm/100 cm2), with an average activity of 335 cpm (1,339 dpm/100 cm2). No alarms were observed during the collection of static measurements for this survey unit with the static alarm set-point set at MDCR plus background. The maximum static MDC observed for the survey unit was 774 dpm/100 cm2. All smear results were less than the respective MDC for alpha and beta contamination.
Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 30 of 2468 2.3.4.1807401 - East Service Building 636' Elevation Classifications: Interior surfaces: Class 3 The survey design for this survey unit called for a 10% scan coverage on the floor and lower walls, a 5% scan coverage on the ceiling and upper walls, and a 10% coverage on the interior office walls. The surfaces were scanned using a Ludlum Model 2350-1 with a Ludlum 43-68 detector or a Ludlum Model 2350-1 with a Ludlum 43-37 detector. The range of observed background in the survey unit was 197 cpm to 698 cpm, with an average background of 507 cpm. No scan alarms were observed in this survey unit with the scan alarm set-point set at the MDCR plus background. Seventy-six (76) static measurements were collected in the survey unit to satisfy the requirement of at least one (1) static measurement, at the highest scan indication, per scan grid. The Ludlum 2350-1 with a Ludlum 43-68 detector was used to acquire static measurements. The maximum activity observed in the survey unit was 704 cpm (2,816 dpm/100 cm2), with an average activity of 369 cpm (1,474 dpm/100 cm2). No alarms were observed during the collection of static measurements for this survey unit with the static alarm set-point set at MDCR plus background. The maximum static MDC observed for the survey unit was 599 dpm/100 cm2. All smear results were less than the respective MDC for alpha and beta contamination. 2.3.4.1907402 - West Service Building 645' Elevation Classifications: Interior surfaces: Class 3 The survey design for this survey unit called for a 10% scan coverage on the floor and lower walls and a 5% scan coverage on the ceiling and upper walls. The surfaces were scanned using a Ludlum Model 2350-1 with a Ludlum 43-68 detector or a Ludlum Model 2350-1 with a Ludlum 43-37 detector. The range of observed background in the survey unit was 256 cpm to 510 cpm, with an average background of 347 cpm. No scan alarms were observed in this survey unit with the scan alarm set-point set at the MDCR plus background. Seventy-six (76) static measurements were collected in the survey unit to satisfy the requirement of at least one (1) static measurement, at the highest scan indication, per scan grid. The Ludlum 2350-1 with a Ludlum 43-68 detector was used to acquire static measurements. The maximum activity observed in the survey unit was 370 cpm (1,480 dpm/100 cm2), with an average activity of 303 cpm (1,225 dpm/100 cm2). No alarms were observed during the collection of static measurements for this survey unit with the static alarm set-point set at MDCR plus background. The maximum static MDC observed for the survey unit was 676 dpm/100 cm2. All smear results were less than the respective MDC for alpha and beta contamination.
Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 31 of 2468 2.3.4.2007701 - East Service Building Roof Classifications: Exterior surfaces: Class 2 The survey design for this survey unit called for a 25% scan coverage on all surfaces and components in the survey unit. The surfaces and components were scanned using a Ludlum Model 2350-1 with a Ludlum 43-68 detector or a Ludlum Model 2350-1 with a Ludlum 43-37 detector. The range of observed background in the survey unit was 160 cpm to 555 cpm, with an average background of 362 cpm. Five (5) scan alarms were observed in this survey unit with the scan alarm set-point set at the MDCR plus background. The alarms occurred during survey of drain cups. Smears were collected at these locations and sent to the on-site lab for gamma spectroscopy analysis, which identified no plant-related radioactivity. Fifty-six (56) static measurements were collected in the survey unit to satisfy the requirement of at least one (1) static measurement, at the highest scan indication, per scan grid. The Ludlum 2350-1 with a Ludlum 43-68 detector was used to acquire static measurements. The maximum activity observed in the survey unit was 859 cpm (3,436 dpm/100 cm2), with an average activity of 349 cpm (1,397 dpm/100 cm2). Five (5) alarms, concurrent with the scan alarms dictated in the scan summary above, were observed during the collection of static measurements for this survey unit with the static alarm set-point set at MDCR plus background. The maximum static MDC observed for the survey unit was 346 dpm/100 cm2. Five (5) smear results were greater than the respective MDC for alpha and beta contamination. These samples were sent to the on-site laboratory for gamma spectroscopy analysis. All gamma spectroscopy analysis results showed no plant-derived radioactivity. Two (2) sediment samples were collected from the roof of the East Service Building. Gamma spectroscopy analysis identified Cs-137 in one (1) of the samples with an activity of 3.10E-01 pCi/g. It was determined that this activity level was less than drainage area fallout levels. 2.3.4.2107702 - West Service Building Roof Classifications: Exterior surfaces: Class 2 The survey design for this survey unit called for a 25% scan coverage on all surfaces in the survey unit.
The surfaces were scanned using a Ludlum Model 2350-1 with a Ludlum 43-68 detector or a Ludlum Model 2350-1 with a Ludlum 43-37 detector. The range of observed background in the survey unit was 326 cpm to 803 cpm, with an average background of 510 cpm. No scan alarms were observed in this survey unit with the scan alarm set-point set at the MDCR plus background. Five (5) static measurements were collected in the survey unit to satisfy the requirement of at least one (1) static measurement, at the highest scan indication, per scan grid. The Ludlum 2350-1 with a Ludlum 43-68 detector was used to acquire static measurements. The maximum activity observed in the survey unit was 805 cpm (3,220 dpm/100 cm2), with an average activity of 655 cpm (2,621 dpm/100 cm2). No alarms were observed during the collection of static measurements for this survey unit with the static alarm set-point set at MDCR plus background. The maximum static MDC observed for the survey unit was 832 dpm/100 cm2.
Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 32 of 2468 All smear results were less than the respective MDC for alpha and beta contamination. 2.3.4.2207703 - East/West Service Building Exterior Walls Classifications: Exterior surfaces: Class 3 The survey design for this survey unit called for a 5% scan coverage on all surfaces in the survey unit. The surfaces were scanned using a Ludlum Model 2350-1 with a Ludlum 43-68 detector or a Ludlum Model 2350-1 with a Ludlum 43-37 detector. The range of observed background in the survey unit was 178 cpm to 452 cpm, with an average background of 261 cpm. No scan alarms were observed in this survey unit with the scan alarm set-point set at the MDCR plus background. Sixteen (16) static measurements were collected in the survey unit to satisfy the requirement of at least one (1) static measurement, at the highest scan indication, per scan grid. The Ludlum 2350-1 with a Ludlum 43-68 detector was used to acquire static measurements. The maximum activity observed in the survey unit was 460 cpm (1,840 dpm/100 cm2), with an average activity of 306 cpm (1,222 dpm/100 cm2). No alarms were observed during the collection of static measurements for this survey unit with the static alarm set-point set at MDCR plus background. The maximum static MDC observed for the survey unit was 629 dpm/100 cm2. All smear results were less than the respective MDC for alpha and beta contamination. 2.3.5ENC 2.3.5.109900 - ENC Concrete Pad Classifications: All surfaces: Class 1 The survey design for this survey unit called for a 100% scan coverage on all surfaces in the survey unit.
The surfaces were scanned using a Ludlum Model 2350-1 with a Ludlum 43-68 detector or a Ludlum Model 2350-1 with a Ludlum 43-37 detector. The range of observed background in the survey unit was 345 cpm to 2,104 cpm, with an average background of 1,023 cpm. No scan alarms were observed in this survey unit with the scan alarm set-point set at the MDCR plus background. Three hundred seventy-eight (378) static measurements were collected in the survey unit to satisfy the requirement of at least one (1) static measurement, at the highest scan indication, per scan grid. The Ludlum 2350-1 with a Ludlum 43-68 detector was used to acquire static measurements. The maximum activity observed in the survey unit was 643 cpm (2,572 dpm/100 cm2), with an average activity of 457 cpm (1,826 dpm/100 cm2). No alarms were observed during the collection of static measurements for this survey unit with the static alarm set-point set at MDCR plus background. The maximum static MDC observed for the survey unit was 750 dpm/100 cm2. All smear results were less than the respective MDC for alpha and beta contamination.
Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 33 of 2468 2.3.6Fire Training Buildings 2.3.6.109601A - Fire Training and Temporary Resin Liner Storage Buildings Classifications: Interior and exterior walls: Class 3 Roof: Class 2 Concrete pads and casks: Class 3 Components: Class 2 The survey design for this survey unit called for a 25% scan coverage on the roof and a 5% scan coverage on the interior and exterior surfaces. In addition, the survey design called for a compressor, CO2 cylinder, three (3) of sixteen (16) concrete casks, and three (3) of sixteen (16) cask lids to be surveyed.
The surfaces and components were scanned using a Ludlum Model 2350-1 with a Ludlum 43-68 detector or a Ludlum 2350-1 with a Ludlum 43-37 detector. The range of observed background in the survey unit was 173 cpm to 867 cpm, with an average background of 396 cpm. Four (4) scan alarms were observed in this survey unit with the scan alarm set-point set at the MDCR plus background. These alarms occurred during survey of metal covers on the Temporary Resin Liner Storage Building, and in response, the covers were disposed of as radioactive waste. Seventy-nine (79) static measurements were collected in the survey unit to satisfy the requirement of at least one (1) static measurement, at the highest scan indication, per scan grid. The Ludlum 2350-1 with a Ludlum 43-68 detector was used to acquire static measurements. The maximum activity observed in the survey unit was 1,093 cpm (4,372 dpm/100 cm2), with an average activity of 359 cpm (1,436 dpm/100 cm2). Four (4) alarms were observed during the collection of static measurements for this survey unit with the static alarm set-point set at MDCR plus background. These alarms occurred in conjunction with the scan alarms from survey of the metal covers, and the material was disposed of as radioactive waste.
One (1) static measurement, at grid 60, is missing from the data report for the survey unit; but, a scan and smear were recorded, and both measurements were below applicable action levels. The maximum static MDC observed for the survey unit was 849 dpm/100 cm2. All smear results were less than the respective MDC for alpha and beta contamination. The concrete casks and lids from the Temporary Resin Storage Building were surveyed using the ISOCS. No plant-derived radionuclides were identified. 2.3.7Interim Radwaste Storage Facility (IRSF) 2.3.7.109501A - IRSF Liner Storage Area Classifications: Floor and lower walls: Class 2 Upper walls and ceiling: Class 3 The survey design for this survey unit called for a 25% scan coverage on the lower walls and floor and a 5% scan coverage on the upper walls and ceiling. The surfaces were scanned using a Ludlum Model 2350-1 with a Ludlum 43-68 detector or a Ludlum 2350-1 with a Ludlum 43-37 detector. The range of observed background in the survey unit was 162 cpm to 253 cpm, with an average background of 207 Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 34 of 2468 cpm. No scan alarms were observed in this survey unit with the scan alarm set-point set at the MDCR plus background. Ninety-seven (97) static measurements were collected in the survey unit to satisfy the requirement of at least one (1) static measurement, at the highest scan indication, per scan grid. The Ludlum 2350-1 with a Ludlum 43-68 detector was used to acquire static measurements. The maximum activity observed in the survey unit was 303 cpm (1,212 dpm/100 cm2), with an average activity of 224 cpm (898 dpm/100 cm2). No alarms were observed during the collection of static measurements for this survey unit with the static alarm set-point set at MDCR plus background. The maximum static MDC observed for the survey unit was 464 dpm/100 cm2. All smear results were less than the respective MDC for alpha and beta contamination. Two (2) oil samples were collected from a crane within the survey unit. Gamma spectroscopy analysis identified no plant-derived radionuclides. 2.3.7.209501B - IRSF Truck Bay and Mezzanine Classifications: Floor and lower walls: Class 2 Upper walls and ceiling: Class 3 The survey design for this survey unit called for a 25% scan coverage on the lower walls and floor and a 5% scan coverage on the upper walls and ceiling. The surfaces were scanned using a Ludlum Model 2350-1 with a Ludlum 43-68 detector or a Ludlum 2350-1 with a Ludlum 43-37 detector. The range of observed background in the survey unit was 165 cpm to 275 cpm, with an average background of 212 cpm. No scan alarms were observed in this survey unit with the scan alarm set-point set at the MDCR plus background. Sixty (60) static measurements were collected in the survey unit to satisfy the requirement of at least one (1) static measurement, at the highest scan indication, per scan grid. The Ludlum 2350-1 with a Ludlum 43-68 detector was used to acquire static measurements. The maximum activity observed in the survey unit was 376 cpm (1,504 dpm/100 cm2), with an average activity of 251 cpm (1,004 dpm/100 cm2). No alarms were observed during the collection of static measurements for this survey unit with the static alarm set-point set at MDCR plus background. The maximum static MDC observed for the survey unit was 471 dpm/100 cm2. All smear results were less than the respective MDC for alpha and beta contamination. 2.3.7.309501C - IRSF Control Room Classifications: Floor and lower walls: Class 2 Upper walls and ceiling: Class 3 The survey design for this survey unit called for a 25% scan coverage on the lower walls and floor and a 5% scan coverage on the upper walls and ceiling. The surfaces were scanned using a Ludlum Model 2350-1 with a Ludlum 43-68 detector or a Ludlum 2350-1 with a Ludlum 43-37 detector. The range of observed background in the survey unit was 172 cpm to 301 cpm, with an average background of 230 Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 35 of 2468 cpm. No scan alarms were observed in this survey unit with the scan alarm set-point set at the MDCR plus background. Thirty-five (35) static measurements were collected in the survey unit to satisfy the requirement of at least one (1) static measurement, at the highest scan indication, per scan grid. The Ludlum 2350-1 with a Ludlum 43-68 detector was used to acquire static measurements. The maximum activity observed in the survey unit was 359 cpm (1,436 dpm/100 cm2), with an average activity of 249 cpm (995 dpm/100 cm2). No alarms were observed during the collection of static measurements for this survey unit with the static alarm set-point set at MDCR plus background. The maximum static MDC observed for the survey unit was 507 dpm/100 cm2. All smear results were less than the respective MDC for alpha and beta contamination. 2.3.7.409504 - IRSF Exterior Classifications: Roof and lower walls: Class 2 Upper walls: Class 3 The survey design for this survey unit called for a 25% scan coverage on the lower walls and roof and a 5% scan coverage on the upper walls. The surfaces were scanned using a Ludlum Model 2350-1 with a Ludlum 43-68 detector or a Ludlum 2350-1 with a Ludlum 43-37 detector. The range of observed background in the survey unit was 178 cpm to 460 cpm, with an average background of 289 cpm. No scan alarms were observed in this survey unit with the scan alarm set-point set at the MDCR plus background. Sixty-two (62) static measurements were collected in the survey unit to satisfy the requirement of at least one (1) static measurement, at the highest scan indication, per scan grid. The Ludlum 2350-1 with a Ludlum 43-68 detector was used to acquire static measurements. The maximum activity observed in the survey unit was 478 cpm (1,912 dpm/100 cm2), with an average activity of 309 cpm (1,236 dpm/100 cm2). No alarms were observed during the collection of static measurements for this survey unit with the static alarm set-point set at MDCR plus background. The maximum static MDC observed for the survey unit was 531 dpm/100 cm2. All smear results were less than the respective MDC for alpha and beta contamination. 2.3.8Mechanical Maintenance Training Center (MMTC) 2.3.8.109400 - MMTC and Warehouse Classifications: Roof: Class 2 Interior and exterior surfaces: Class 3 The survey design for this survey unit called for a 25% scan coverage on the roof and a 5% scan coverage on interior and exterior surfaces. The surfaces were scanned using a Ludlum Model 2350-1 with a Ludlum 43-68 detector or a Ludlum 2350-1 with a Ludlum 43-37 detector. The range of observed background in the survey unit was 184 cpm to 667 cpm, with an average background of 350 cpm. No scan alarms were observed in this survey unit with the scan alarm set-point set at the MDCR plus background.
Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 36 of 2468 Fifty (50) static measurements were collected in the survey unit to satisfy the requirement of at least one (1) static measurement, at the highest scan indication, per scan grid. The Ludlum 2350-1 with a Ludlum 43-68 detector was used to acquire static measurements. The maximum activity observed in the survey unit was 832 cpm (3,328 dpm/100 cm2), with an average activity of 361 cpm (1,446 dpm/100 cm2). No alarms were observed during the collection of static measurements for this survey unit with the static alarm set-point set at MDCR plus background. The maximum static MDC observed for the survey unit was 754 dpm/100 cm2. All smear results were less than the respective MDC for alpha and beta contamination. One (1) ISOCS measurement was performed on the roof of the MMTC. The gamma spectroscopy analysis for the measurement identified no plant-derived radionuclides. 2.3.9NGET 2.3.9.109800 - NGET Concrete Pad Classifications: All surfaces: Class 1 The survey design for this survey unit called for a 100% scan coverage on all surfaces in the survey unit. The surfaces were scanned using a Ludlum Model 2350-1 with a Ludlum 43-68 detector or a Ludlum Model 2350-1 with a Ludlum 43-37 detector. The range of observed background in the survey unit was 393 cpm to 2,549 cpm, with an average background of 1,0158 cpm. No scan alarms were observed in this survey unit with the scan alarm set-point set at the MDCR plus background. One hundred eighty-four (184) static measurements were collected in the survey unit to satisfy the requirement of at least one (1) static measurement, at the highest scan indication, per scan grid. The Ludlum 2350-1 with a Ludlum 43-68 detector was used to acquire static measurements. The maximum activity observed in the survey unit was 13,118 cpm (52,472 dpm/100 cm2), with an average activity of 588 cpm (2,353 dpm/100 cm2). Two (2) alarms were observed during the collection of static measurements for this survey unit with the static alarm set-point set at MDCR plus background. The Inspector 1000 was deployed in response to the alarms, which identified a discrete radioactive particle. Grids 1, 2, 3, 4, and 14 were segregated and disposed of as radioactive material. The maximum static MDC observed for the survey unit was 692 dpm/100 cm2. All smear results were less than the respective MDC for alpha and beta contamination. 2.3.10Old Gatehouse 2.3.10.109131 - Old Gatehouse (Security Building) Classifications: Roof, floor, and interior and exterior lower walls: Class 2 Interior and exterior upper walls: Class 3 The survey design for this survey unit called for a 25% scan coverage on the interior lower walls and floor and a 5% scan coverage on the interior upper walls and ceiling. In addition, the survey design called for a 25% scan coverage on the exterior lower walls and roof and a 5% scan coverage on the exterior upper walls. The surfaces were scanned using a Ludlum Model 2350-1 with a Ludlum 43-68 detector or a Ludlum 2350-1 with a Ludlum 43-37 detector. The range of observed background in the survey unit was Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 37 of 2468 310 cpm to 567 cpm, with an average background of 403 cpm. No scan alarms were observed in this survey unit with the scan alarm set-point set at the MDCR plus background. Forty-eight (48) static measurements were collected in the survey unit to satisfy the requirement of at least one (1) static measurement, at the highest scan indication, per scan grid. The Ludlum 2350-1 with a Ludlum 43-68 detector was used to acquire static measurements. The maximum activity observed in the survey unit was 734 cpm (2,936 dpm/100 cm2), with an average activity of 403 cpm (1,610 dpm/100 cm2). No alarms were observed during the collection of static measurements for this survey unit with the static alarm set-point set at MDCR plus background. The maximum static MDC observed for the survey unit was 721 dpm/100 cm2. All smear results were less than the respective MDC for alpha and beta contamination. 2.3.11Old Sewage Lift Station 2.3.11.110220B - Old Sewage Lift Station Classifications: All surfaces: Class 3 The survey design for this survey unit called for a 25% scan coverage on the roof, a 5% scan coverage on the exterior walls, and a 10% scan coverage on the floor. The surfaces were scanned using a Ludlum Model 2350-1 with a Ludlum 43-68 detector. The range of observed background in the survey unit was 297 cpm to 476 cpm, with an average background of 384 cpm. No scan alarms were observed in this survey unit with the scan alarm set-point set at the MDCR plus background. Eight (8) static measurements were collected in the survey unit to satisfy the requirement of at least one (1) static measurement, at the highest scan indication, per scan grid. The Ludlum 2350-1 with a Ludlum 43-68 detector was used to acquire static measurements. The maximum activity observed in the survey unit was 613 cpm (2,452 dpm/100 cm2), with an average activity of 422 cpm (1,686 dpm/100 cm2). No alarms were observed during the collection of static measurements for this survey unit with the static alarm set-point set at MDCR plus background. The maximum static MDC observed for the survey unit was 651 dpm/100 cm2. All smear results were less than the respective MDC for alpha and beta contamination. 2.3.11.210220BA - Sewage Lift Station and Components Classifications: All surfaces: Class 3 The survey design for this survey unit called for a 5% scan coverage on all surfaces within the survey unit. The surfaces were scanned using a Ludlum Model 2350-1 with a Ludlum 43-68 detector. The range of observed background in the survey unit was 232 cpm to 668 cpm, with an average background of 391 cpm. No scan alarms were observed in this survey unit with the scan alarm set-point set at the MDCR plus background. Ten (10) static measurements were collected in the survey unit to satisfy the requirement of at least one (1) static measurement, at the highest scan indication, per scan grid. The Ludlum 2350-1 with a Ludlum 43-68 detector was used to acquire static measurements. The maximum activity observed in the survey unit was 662 cpm (2,648 dpm/100 cm2), with an average activity of 381 cpm (1,524 dpm/100 cm2). No Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 38 of 2468 alarms were observed during the collection of static measurements for this survey unit with the static alarm set-point set at MDCR plus background. The maximum static MDC observed for the survey unit was 763 dpm/100 cm2. All smear results were less than the respective MDC for alpha and beta contamination. One (1) sludge sample was collected for the survey unit and analyzed using the on-site gamma spectroscopy system. Cs-137 was identified at a concentration of 4.51E-02 pCi/g. This concentration is less than the fallout levels for disturbed drainage areas, according to ZionSolutions TSD 13-004, "Examination of Cs-137 Global Fallout in Soils at Zion Station." 2.3.12South Gatehouse 2.3.12.109140 - South Gatehouse Classifications: Roof, floor, and all lower walls: Class 2 Ceiling, stairs, and all upper walls: Class 3 The survey design for this survey unit called for a 25% scan coverage on the roof, first floor lower walls, and floor; a 10% scan coverage on the first floor ceiling and upper walls; a 10% scan coverage for the second floor lower walls and floor; a 5% scan coverage on the second floor upper walls, ceiling, and exterior upper walls; and a 10% scan coverage on the exterior lower walls. The surfaces were scanned using a Ludlum Model 2350-1 with a Ludlum 43-68 detector or a Ludlum 2350-1 with a Ludlum 43-37 detector. The range of observed background in the survey unit was 196 cpm to 3,159 cpm, with an average background of 809 cpm. No scan alarms were observed in this survey unit with the scan alarm set-point set at the MDCR plus background. One hundred thirty-two (132) static measurements were collected in the survey unit to satisfy the requirement of at least one (1) static measurement, at the highest scan indication, per scan grid. The Ludlum 2350-1 with a Ludlum 43-68 detector was used to acquire static measurements. The maximum activity observed in the survey unit was 840 cpm (3,360 dpm/100 cm2), with an average activity of 458 cpm (1,831 dpm/100 cm2). No alarms were observed during the collection of static measurements for this survey unit with the static alarm set-point set at MDCR plus background. The maximum static MDC observed for the survey unit was 1,653 dpm/100 cm2. All smear results were less than the respective MDC for alpha and beta contamination. Two (2) oil samples were collected from compressors within the survey unit. Gamma spectroscopy analysis identified no plant-derived radionuclides. 2.3.13Turbine Building 2.3.13.106000A - Turbine Building 583' Unit 1 North Condenser Tube Pull Pit Classifications: Floor and lower walls: Class 2 Ceiling and upper walls: Class 3 The survey design for this survey unit called for a 25% scan coverage on the floor and lower walls and a 5% scan coverage on ceiling and upper walls. The surfaces were scanned using a Ludlum Model 2350-1 Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 39 of 2468 with a Ludlum 43-68 detector or a Ludlum 2350-1 with a Ludlum 43-37 detector. The range of observed background in the survey unit was 109 cpm to 302 cpm, with an average background of 214 cpm. No scan alarms were observed in this survey unit with the scan alarm set-point set at the MDCR plus background. Fifty (50) static measurements were collected in the survey unit to satisfy the requirement of at least one (1) static measurement, at the highest scan indication, per scan grid. The Ludlum 2350-1 with a Ludlum 43-68 detector was used to acquire static measurements. The maximum activity observed in the survey unit was 298 cpm (1,192 dpm/100 cm2), with an average activity of 157 cpm (629 dpm/100 cm2). No alarms were observed during the collection of static measurements for this survey unit with the static alarm set-point set at MDCR plus background. The maximum static MDC observed for the survey unit was 527 dpm/100 cm2. All smear results were less than the respective MDC for alpha and beta contamination. 2.3.13.206000B - Turbine Building 583' Unit 1 South Condenser Tube Pull Pit Classifications: Floor and lower walls: Class 2 Ceiling and upper walls: Class 3 The survey design for this survey unit called for a 25% scan coverage on the floor and lower walls and a 5% scan coverage on ceiling and upper walls. The surfaces were scanned using a Ludlum Model 2350-1 with a Ludlum 43-68 detector or a Ludlum 2350-1 with a Ludlum 43-37 detector. The range of observed background in the survey unit was 96 cpm to 249 cpm, with an average background of 206 cpm. One (1) scan alarm was observed in this survey unit with the scan alarm set-point set at the MDCR plus background. In grid 25, a discrete radioactive particle was discovered and disposed of. The gamma spectroscopy analysis for the particle positively identified Co-60 at 3.22E-reclassified as Class 1 and the remaining surfaces were scanned. No additional scan alarms were identified. Forty-five (45) static measurements were collected in the survey unit to satisfy the requirement of at least one (1) static measurement, at the highest scan indication, per scan grid. The Ludlum 2350-1 with a Ludlum 43-68 detector was used to acquire static measurements. The maximum activity observed in the survey unit was 489 cpm (1,956 dpm/100 cm2), with an average activity of 233 cpm (932 dpm/100 cm2). One (1) alarm was observed during the collection of static measurements for this survey unit with the static alarm set-point set at MDCR plus background. The action taken in response to this alarm is concurrent with the action in the scan summary above. The maximum static MDC observed for the survey unit was 477 dpm/100 cm2. All smear results were less than the respective MDC for alpha and beta contamination.
Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 40 of 2468 2.3.13.306000C - Turbine Building 592' Circulatory Water Discharge Classifications: Floor and lower walls: Class 2 Ceiling, upper walls, and components: Class 3 The survey design for this survey unit called for a 25% scan coverage on the floor and lower walls and a 5% scan coverage on ceiling, upper walls, and components. The surfaces and components were scanned using a Ludlum Model 2350-1 with a Ludlum 43-68 detector or a Ludlum 2350-1 with a Ludlum 43-37 detector. The range of observed background in the survey unit was 91 cpm to 208 cpm, with an average background of 136 cpm. No scan alarms were observed in this survey unit with the scan alarm set-point set at the MDCR plus background. Nineteen (19) static measurements were collected in the survey unit to satisfy the requirement of at least one (1) static measurement, at the highest scan indication, per scan grid. The Ludlum 2350-1 with a Ludlum 43-68 detector was used to acquire static measurements. The maximum activity observed in the survey unit was 233 cpm (932 dpm/100 cm2), with an average activity of 123 cpm (491 dpm/100 cm2). No alarms were observed during the collection of static measurements for this survey unit with the static alarm set-point set at MDCR plus background. The maximum static MDC observed for the survey unit was 433 dpm/100 cm2. All smear results were less than the respective MDC for alpha and beta contamination. 2.3.13.406000D - Turbine Building 583' Unit 2 North Condenser Tube Pull Pit Classifications: Floor and lower walls: Class 2 Ceiling and upper walls: Class 3 The survey design for this survey unit called for a 25% scan coverage on the floor and lower walls and a 5% scan coverage on ceiling and upper walls. The surfaces were scanned using a Ludlum Model 2350-1 with a Ludlum 43-68 detector or a Ludlum 2350-1 with a Ludlum 43-37 detector. The range of observed background in the survey unit was 93 cpm to 314 cpm, with an average background of 195 cpm. No scan alarms were observed in this survey unit with the scan alarm set-point set at the MDCR plus background. Forty (40) static measurements were collected in the survey unit to satisfy the requirement of at least one (1) static measurement, at the highest scan indication, per scan grid. The Ludlum 2350-1 with a Ludlum 43-68 detector was used to acquire static measurements. The maximum activity observed in the survey unit was 272 cpm (1,088 dpm/100 cm2), with an average activity of 204 cpm (814 dpm/100 cm2). No alarms were observed during the collection of static measurements for this survey unit with the static alarm set-point set at MDCR plus background. The maximum static MDC observed for the survey unit was 465 dpm/100 cm2. All smear results were less than the respective MDC for alpha and beta contamination.
Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 41 of 2468 2.3.13.506000E - Turbine Building 583' Unit 2 South Condenser Tube Pull Pit Classifications: Floor and lower walls: Class 2 Ceiling and upper walls: Class 3 The survey design for this survey unit called for a 25% scan coverage on the floor and lower walls and a 5% scan coverage on ceiling and upper walls. The surfaces were scanned using a Ludlum Model 2350-1 with a Ludlum 43-68 detector or a Ludlum 2350-1 with a Ludlum 43-37 detector. The range of observed background in the survey unit was 94 cpm to 282 cpm, with an average background of 179 cpm. No scan alarms were observed in this survey unit with the scan alarm set-point set at the MDCR plus background. Thirty (30) static measurements were collected in the survey unit to satisfy the requirement of at least one (1) static measurement, at the highest scan indication, per scan grid. The Ludlum 2350-1 with a Ludlum 43-68 detector was used to acquire static measurements. The maximum activity observed in the survey unit was 249 cpm (996 dpm/100 cm2), with an average activity of 173 cpm (691 dpm/100 cm2). No alarms were observed during the collection of static measurements for this survey unit with the static alarm set-point set at MDCR plus background. The maximum static MDC observed for the survey unit was 494 dpm/100 cm2. All smear results were less than the respective MDC for alpha and beta contamination. 2.3.13.606000F - Turbine Building 582' Circulatory Water Discharge Classifications: Floor and lower walls: Class 2 Ceiling, upper walls, components: Class 3 The survey design for this survey unit called for a 25% scan coverage on the floor and lower walls and a 5% scan coverage on ceiling, upper walls, and components. The surfaces and components were scanned using a Ludlum Model 2350-1 with a Ludlum 43-68 detector or a Ludlum 2350-1 with a Ludlum 43-37 detector. The range of observed background in the survey unit was 85 cpm to 315 cpm, with an average background of 195 cpm. No scan alarms were observed in this survey unit with the scan alarm set-point set at the MDCR plus background. Twenty-nine (29) static measurements were collected in the survey unit to satisfy the requirement of at least one (1) static measurement, at the highest scan indication, per scan grid. The Ludlum 2350-1 with a Ludlum 43-68 detector was used to acquire static measurements. The maximum activity observed in the survey unit was 263 cpm (1,052 dpm/100 cm2), with an average activity of 148 cpm (591 dpm/100 cm2). No alarms were observed during the collection of static measurements for this survey unit with the static alarm set-point set at MDCR plus background. The maximum static MDC observed for the survey unit was 538 dpm/100 cm2. All smear results were less than the respective MDC for alpha and beta contamination.
Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 42 of 2468 2.3.13.706307 - Turbine Building Technical Support Center Classifications: Floor and lower walls: Class 2 Ceiling and upper walls: Class 3 The survey design for this survey unit called for a 25% scan coverage on the floor and lower walls and a 5% scan coverage on ceiling and upper walls. The surfaces were scanned using a Ludlum Model 2350-1 with a Ludlum 43-68 detector or a Ludlum 2350-1 with a Ludlum 43-37 detector. The range of observed background in the survey unit was 106 cpm to 1,382 cpm, with an average background of 429 cpm. No scan alarms were observed in this survey unit with the scan alarm set-point set at the MDCR plus background. Fifty-seven (57) static measurements were collected in the survey unit to satisfy the requirement of at least one (1) static measurement, at the highest scan indication, per scan grid. The Ludlum 2350-1 with a Ludlum 43-68 detector was used to acquire static measurements. The maximum activity observed in the survey unit was 424 cpm (1,696 dpm/100 cm2), with an average activity of 246 cpm (986 dpm/100 cm2). No alarms were observed during the collection of static measurements for this survey unit with the static alarm set-point set at MDCR plus background. The maximum static MDC observed for the survey unit was 587 dpm/100 cm2. All smear results were less than the respective MDC for alpha and beta contamination. 2.3.13.806307A - Turbine Building Technical Support Center Exterior Classifications: Roof and lower walls: Class 2 Upper walls: Class 3 The survey design for this survey unit called for a 25% scan coverage on the floor and lower walls and a 5% scan coverage on the upper walls. The surfaces were scanned using a Ludlum Model 2350-1 with a Ludlum 43-68 detector or a Ludlum 2350-1 with a Ludlum 43-37 detector. The range of observed background in the survey unit was 179 cpm to 380 cpm, with an average background of 299 cpm. No scan alarms were observed in this survey unit with the scan alarm set-point set at the MDCR plus background. Thirty-seven (37) static measurements were collected in the survey unit to satisfy the requirement of at least one (1) static measurement, at the highest scan indication, per scan grid. The Ludlum 2350-1 with a Ludlum 43-68 detector was used to acquire static measurements. The maximum activity observed in the survey unit was 518 cpm (2,072 dpm/100 cm2), with an average activity of 343 cpm (1,371 dpm/100 cm2). No alarms were observed during the collection of static measurements for this survey unit with the static alarm set-point set at MDCR plus background. The maximum static MDC observed for the survey unit was 574 dpm/100 cm2. All smear results were less than the respective MDC for alpha and beta contamination.
Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 43 of 2468 2.3.13.906310A - Turbine Building 592' Elevation South Area Classifications: Floor and lower walls: Class 2 Ceiling and upper walls: Class 3 The survey design for this survey unit called for a 25% scan coverage on the floor and lower walls and a 5% scan coverage on the ceiling and upper walls. The surfaces were scanned using a Ludlum Model 2350-1 with a Ludlum 43-68 detector or a Ludlum 2350-1 with a Ludlum 43-37 detector. The range of observed background in the survey unit was 148 cpm to 465 cpm, with an average background of 244 cpm. No scan alarms were observed in this survey unit with the scan alarm set-point set at the MDCR plus background. Fifty (50) static measurements were collected in the survey unit to satisfy the requirement of at least one (1) static measurement, at the highest scan indication, per scan grid. The Ludlum 2350-1 with a Ludlum 43-68 detector was used to acquire static measurements. The maximum activity observed in the survey unit was 506 cpm (2,024 dpm/100 cm2), with an average activity of 206 cpm (825 dpm/100 cm2). No alarms were observed during the collection of static measurements for this survey unit with the static alarm set-point set at MDCR plus background. The maximum static MDC observed for the survey unit was 645 dpm/100 cm2. All smear results were less than the respective MDC for alpha and beta contamination. 2.3.13.1006310B - Turbine Building 592' Elevation South Area Classifications: Floor and lower walls: Class 2 Ceiling and upper walls: Class 3 The survey design for this survey unit called for a 25% scan coverage on the floor and lower walls and a 5% scan coverage on the ceiling and upper walls. The surfaces were scanned using a Ludlum Model 2350-1 with a Ludlum 43-68 detector or a Ludlum 2350-1 with a Ludlum 43-37 detector. The range of observed background in the survey unit was 152 cpm to 465 cpm, with an average background of 323 cpm. No scan alarms were observed in this survey unit with the scan alarm set-point set at the MDCR plus background. Forty-five (45) static measurements were collected in the survey unit to satisfy the requirement of at least one (1) static measurement, at the highest scan indication, per scan grid. The Ludlum 2350-1 with a Ludlum 43-68 detector was used to acquire static measurements. The maximum activity observed in the survey unit was 356 cpm (1,424 dpm/100 cm2), with an average activity of 252 cpm (1,008 dpm/100 cm2). No alarms were observed during the collection of static measurements for this survey unit with the static alarm set-point set at MDCR plus background. The maximum static MDC observed for the survey unit was 535 dpm/100 cm2. All smear results were less than the respective MDC for alpha and beta contamination.
Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 44 of 2468 2.3.13.1106310C - Turbine Building 592' Elevation South Area Classifications: Floor, lower walls, and cubicle: Class 2 Ceiling and upper walls: Class 3 The survey design for this survey unit called for a 25% scan coverage on the floor and lower walls, a 5% scan coverage on the ceiling and upper walls, and a 25% scan coverage on the interior cubicle surfaces.
The surfaces were scanned using a Ludlum Model 2350-1 with a Ludlum 43-68 detector or a Ludlum 2350-1 with a Ludlum 43-37 detector. The range of observed background in the survey unit was 115 cpm to 301 cpm, with an average background of 202 cpm. No scan alarms were observed in this survey unit with the scan alarm set-point set at the MDCR plus background. Eighty (80) static measurements were collected in the survey unit to satisfy the requirement of at least one (1) static measurement, at the highest scan indication, per scan grid. The Ludlum 2350-1 with a Ludlum 43-68 detector was used to acquire static measurements. The maximum activity observed in the survey unit was 303 cpm (1,212 dpm/100 cm2), with an average activity of 194 cpm (775 dpm/100 cm2). No alarms were observed during the collection of static measurements for this survey unit with the static alarm set-point set at MDCR plus background. The maximum static MDC observed for the survey unit was 539 dpm/100 cm2. All smear results were less than the respective MDC for alpha and beta contamination. 2.3.13.1206310D - Turbine Building 592' Elevation South Area Classifications: Floor and lower walls: Class 2 Ceiling and upper walls: Class 3 The survey design for this survey unit called for a 25% scan coverage on the floor and lower walls and a 5% scan coverage on the ceiling and upper walls. The surfaces were scanned using a Ludlum Model 2350-1 with a Ludlum 43-68 detector or a Ludlum 2350-1 with a Ludlum 43-37 detector. The range of observed background in the survey unit was 122 cpm to 317 cpm, with an average background of 224 cpm. One (1) scan alarm was observed in this survey unit with the scan alarm set-point set at the MDCR plus background. In response to the alarm, the Canberra Inspector-1000 LaBr detector was deployed, and no plant-derived radionuclides were identified. Eighty (80) static measurements were collected in the survey unit to satisfy the requirement of at least one (1) static measurement, at the highest scan indication, per scan grid. The Ludlum 2350-1 with a Ludlum 43-68 detector was used to acquire static measurements. The maximum activity observed in the survey unit was 352 cpm (1,408 dpm/100 cm2), with an average activity of 217 cpm (867 dpm/100 cm2). Three (3) alarms were observed during the collection of static measurements for this survey unit with the static alarm set-point set at MDCR plus background. The actions taken in response to static alarms are concurrent with the actions taken in the scan summary above. The maximum static MDC observed for the survey unit was 525 dpm/100 cm2. All smear results were less than the respective MDC for alpha and beta contamination.
Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 45 of 2468 2.3.13.1306310E - Turbine Building 592' Elevation South Area Classifications: Floor and lower walls: Class 2 Ceiling and upper walls: Class 3 The survey design for this survey unit called for a 25% scan coverage on the floor and lower walls and a 5% scan coverage on the ceiling and upper walls. The surfaces were scanned using a Ludlum Model 2350-1 with a Ludlum 43-68 detector or a Ludlum 2350-1 with a Ludlum 43-37 detector. The range of observed background in the survey unit was 141 cpm to 389 cpm, with an average background of 223 cpm. Two (2) scan alarms were observed in this survey unit with the scan alarm set-point set at the MDCR plus background. In response to the alarms, the Canberra Inspector-1000 LaBr detector was deployed, and no plant-derived radionuclides were identified. Sixty-eight (68) static measurements were collected in the survey unit to satisfy the requirement of at least one (1) static measurement, at the highest scan indication, per scan grid. The Ludlum 2350-1 with a Ludlum 43-68 detector was used to acquire static measurements. The maximum activity observed in the survey unit was 375 cpm (1,500 dpm/100 cm2), with an average activity of 202 cpm (808 dpm/100 cm2). One (1) alarm was observed during the collection of static measurements for this survey unit with the static alarm set-point set at MDCR plus background. The static alarm was concurrent with scan alarms, and the actions taken in response are dictated in the scan summary above. The maximum static MDC observed for the survey unit was 585 dpm/100 cm2. One (1) smear was sent to the on-site laboratory for gamma spectroscopy analysis. The gamma spectroscopy analysis results showed no plant-derived radioactivity. All other smears were less than respective MDC for alpha and beta contamination. During the performance of a QC survey in the survey unit, the technician received one (1) scan alarm. The Inspector was deployed in response, and no plant-derived radionuclides were identified. In addition, one (1) smear result from the QC survey was sent to the on-site laboratory for gamma spectroscopy analysis, which revealed no plan-related activity. 2.3.13.1406310F - Turbine Building 592' Elevation South Area Classifications: Floor and lower walls: Class 2 Ceiling, upper walls, and components walls: Class 3 The survey design for this survey unit called for a 25% scan coverage on the floor, lower walls, and components and a 5% scan coverage on the ceiling and upper walls. The surfaces and components were scanned using a Ludlum Model 2350-1 with a Ludlum 43-68 detector or a Ludlum 2350-1 with a Ludlum 43-37 detector. The range of observed background in the survey unit was 143 cpm to 290 cpm, with an average background of 214 cpm. No scan alarms were observed in this survey unit with the scan alarm set-point set at the MDCR plus background. Eighty (80) static measurements were collected in the survey unit to satisfy the requirement of at least one (1) static measurement, at the highest scan indication, per scan grid. The Ludlum 2350-1 with a Ludlum 43-68 detector was used to acquire static measurements. The maximum activity observed in the Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 46 of 2468 survey unit was 326 cpm (1,304 dpm/100 cm2), with an average activity of 166 cpm (665 dpm/100 cm2). No alarms were observed during the collection of static measurements for this survey unit with the static alarm set-point set at MDCR plus background. The maximum static MDC observed for the survey unit was 407 dpm/100 cm2. One smear result was greater than MDC, and the sample was sent to the on-site laboratory for gamma spectroscopy analysis. The gamma spectroscopy analysis results showed no plant-related radioactivity. In addition, the Inspector was deployed to the location where the elevated smear was collected. The Inspector identified no plant-derived radionuclides. All other smear results were less than the respective MDC for alpha and beta contamination. 2.3.13.1506311-1A - Turbine Building 592' Elevation Central Area Classifications: Floor: Class 1 Ceiling: Class 2 The survey design for this survey unit called for a 100% scan coverage on the floor and a 25% scan coverage on the ceiling. The surfaces were scanned using a Ludlum Model 2350-1 with a Ludlum 43-68 detector or a Ludlum 2350-1 with a Ludlum 43-37 detector. The range of observed background in the survey unit was 147 cpm to 260 cpm, with an average background of 224 cpm. Three (3) scan alarms were observed in this survey unit with the scan alarm set-point set at the MDCR plus background. Thirty-one (31) static measurements were collected in the survey unit to satisfy the requirement of at least one (1) static measurement, at the highest scan indication, per scan grid. The Ludlum 2350-1 with a Ludlum 43-68 detector was used to acquire static measurements. The maximum activity observed in the survey unit was 555 cpm (2,220 dpm/100 cm2), with an average activity of 253 cpm (1,012 dpm/100 cm2). Four (4) alarms were observed during the collection of static measurements for this survey unit with the static alarm set-point set at MDCR plus background. The maximum static MDC observed for the survey unit was 542 dpm/100 cm2. All smear results were less than the respective MDC for alpha and beta contamination. The scan and static alarms were not investigated with the Inspector or ISOCS. Rather, it was determined that the survey unit did not meet the requirements for unconditional release and that the survey unit must be remediated prior to demolition. The concrete was segregated and disposed of as radioactive waste. 2.3.13.1606311A - Turbine Building 592' Elevation Central Area Classifications: Floor, lower walls, stairs, and components: Class 2 Ceiling and upper walls: Class 3 The survey design for this survey unit called for a 25% scan coverage on the floor, lower walls, and components in the survey unit and a 5% scan coverage on the ceiling and upper walls. The surfaces and components were scanned using a Ludlum Model 2350-1 with a Ludlum 43-68 detector or a Ludlum 2350-1 with a Ludlum 43-37 detector. The range of observed background in the survey unit was 129 cpm to 467 cpm, with an average background of 241 cpm. Two (2) scan alarms were observed in this Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 47 of 2468 survey unit with the scan alarm set-point set at the MDCR plus background. In response to the alarm, the Canberra Inspector-1000 LaBr detector was deployed, and no plant-derived radionuclides were identified. Fifty-eight (58) static measurements were collected in the survey unit to satisfy the requirement of at least one (1) static measurement, at the highest scan indication, per scan grid. The Ludlum 2350-1 with a Ludlum 43-68 detector was used to acquire static measurements. The maximum activity observed in the survey unit was 925 cpm (3,700 dpm/100 cm2), with an average activity of 207 cpm (828 dpm/100 cm2). Two (2) alarms were observed during the collection of static measurements for this survey unit with the static alarm set-point set at MDCR plus background. The actions taken in response to static alarms are concurrent with the actions taken in the scan summary above. The maximum static MDC observed for the survey unit was 633 dpm/100 cm2. All smear results were less than the respective MDC for alpha and beta contamination. 2.3.13.1706311B - Turbine Building 592' Elevation Central Area Classifications: Floor, lower walls, and components: Class 2 Ceiling and upper walls: Class 3 The survey design for this survey unit called for a 25% scan coverage on the floor, lower walls, and components in the survey unit and a 5% scan coverage on the ceiling and upper walls. The surfaces and components were scanned using a Ludlum Model 2350-1 with a Ludlum 43-68 detector or a Ludlum 2350-1 with a Ludlum 43-37 detector. The range of observed background in the survey unit was 111 cpm to 285 cpm, with an average background of 206 cpm. No scan alarms were observed in this survey unit with the scan alarm set-point set at the MDCR plus background. Thirty-five (35) static measurements were collected in the survey unit to satisfy the requirement of at least one (1) static measurement, at the highest scan indication, per scan grid. The Ludlum 2350-1 with a Ludlum 43-68 detector was used to acquire static measurements. The maximum activity observed in the survey unit was 319 cpm (1,276 dpm/100 cm2), with an average activity of 211 cpm (845 dpm/100 cm2). No alarms were observed during the collection of static measurements for this survey unit with the static alarm set-point set at MDCR plus background. The maximum static MDC observed for the survey unit was 508 dpm/100 cm2. All smear results were less than the respective MDC for alpha and beta contamination. 2.3.13.1806311C - Turbine Building 592' Elevation Central Area Classifications: Floor and lower walls: Class 2 Ceiling and upper walls: Class 3 The survey design for this survey unit called for a 25% scan coverage on the floor, lower walls, and components in the survey unit and a 5% scan coverage on the ceiling and upper walls. The surfaces and components were scanned using a Ludlum Model 2350-1 with a Ludlum 43-68 detector or a Ludlum 2350-1 with a Ludlum 43-37 detector. The range of observed background in the survey unit was 92 cpm Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 48 of 2468 to 294 cpm, with an average background of 187 cpm. No scan alarms were observed in this survey unit with the scan alarm set-point set at the MDCR plus background. Sixty-one (61) static measurements were collected in the survey unit to satisfy the requirement of at least one (1) static measurement, at the highest scan indication, per scan grid. The Ludlum 2350-1 with a Ludlum 43-68 detector was used to acquire static measurements. The maximum activity observed in the survey unit was 310 cpm (1,240 dpm/100 cm2), with an average activity of 201 cpm (806 dpm/100 cm2). No alarms were observed during the collection of static measurements for this survey unit with the static alarm set-point set at MDCR plus background. The maximum static MDC observed for the survey unit was 515 dpm/100 cm2. All smear results were less than the respective MDC for alpha and beta contamination. 2.3.13.1906311D - Turbine Building 592' Elevation Central Area Classifications: Floor and lower walls: Class 2 Ceiling and upper walls: Class 3 The survey design for this survey unit called for a 25% scan coverage on the floor, lower walls, and components in the survey unit and a 5% scan coverage on the ceiling and upper walls. The surfaces and components were scanned using a Ludlum Model 2350-1 with a Ludlum 43-68 detector or a Ludlum 2350-1 with a Ludlum 43-37 detector. The range of observed background in the survey unit was 142 cpm to 313 cpm, with an average background of 229 cpm. No scan alarms were observed in this survey unit with the scan alarm set-point set at the MDCR plus background. Sixty-five (65) static measurements were collected in the survey unit to satisfy the requirement of at least one (1) static measurement, at the highest scan indication, per scan grid. The Ludlum 2350-1 with a Ludlum 43-68 detector was used to acquire static measurements. The maximum activity observed in the survey unit was 385 cpm (1,540 dpm/100 cm2), with an average activity of 211 cpm (843 dpm/100 cm2). No alarms were observed during the collection of static measurements for this survey unit with the static alarm set-point set at MDCR plus background. The maximum static MDC observed for the survey unit was 528 dpm/100 cm2. All smear results were less than the respective MDC for alpha and beta contamination. One (1) lube oil sample was collected from the survey unit. Gamma spectroscopy analysis identified no plant-derived radionuclides. 2.3.13.2006311E - Turbine Building 592' Elevation Central Area Classifications: Floor, lower walls, and components: Class 2 Ceiling and upper walls: Class 3 The survey design for this survey unit called for a 25% scan coverage on the floor, lower walls, and components in the survey unit and a 5% scan coverage on the ceiling and upper walls. The surfaces and components were scanned using a Ludlum Model 2350-1 with a Ludlum 43-68 detector or a Ludlum 2350-1 with a Ludlum 43-37 detector. The range of observed background in the survey unit was 109 Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 49 of 2468 cpm to 244 cpm, with an average background of 166 cpm. No scan alarms were observed in this survey unit with the scan alarm set-point set at the MDCR plus background. Seventy-five (75) static measurements were collected in the survey unit to satisfy the requirement of at least one (1) static measurement, at the highest scan indication, per scan grid. The Ludlum 2350-1 with a Ludlum 43-68 detector was used to acquire static measurements. The maximum activity observed in the survey unit was 275 cpm (1,100 dpm/100 cm2), with an average activity of 165 cpm (659 dpm/100 cm2). No alarms were observed during the collection of static measurements for this survey unit with the static alarm set-point set at MDCR plus background. The maximum static MDC observed for the survey unit was 401 dpm/100 cm2. All smear results were less than the respective MDC for alpha and beta contamination. 2.3.13.2106311F - Turbine Building 592' Elevation Central Area Classifications: Floor, lower walls, and components: Class 2 Ceiling and upper walls: Class 3 The survey design for this survey unit called for a 25% scan coverage on the floor, lower walls, and components in the survey unit and a 5% scan coverage on the ceiling and upper walls. The surfaces and components were scanned using a Ludlum Model 2350-1 with a Ludlum 43-68 detector or a Ludlum 2350-1 with a Ludlum 43-37 detector. The range of observed background in the survey unit was 143 cpm to 290 cpm, with an average background of 214 cpm. No scan alarms were observed in this survey unit with the scan alarm set-point set at the MDCR plus background. Eighty (80) static measurements were collected in the survey unit to satisfy the requirement of at least one (1) static measurement, at the highest scan indication, per scan grid. The Ludlum 2350-1 with a Ludlum 43-68 detector was used to acquire static measurements. The maximum activity observed in the survey unit was 326 cpm (1,304 dpm/100 cm2), with an average activity of 166 cpm (665 dpm/100 cm2). No alarms were observed during the collection of static measurements for this survey unit with the static alarm set-point set at MDCR plus background. The maximum static MDC observed for the survey unit was 407 dpm/100 cm2. One smear result was greater than MDC, and the sample was sent to the on-site laboratory for gamma spectroscopy analysis. The gamma spectroscopy analysis results showed no plant-related radioactivity. In addition, the Inspector was deployed to the location where the elevated smear was collected. The Inspector identified no plant-derived radionuclides. All other smear results were less than the respective MDC for alpha and beta contamination. 2.3.13.2206311G - Turbine Building 592' Elevation Central Area Classifications: Floor, lower walls, and roof: Class 2 Ceiling and upper walls: Class 3 The survey design for this survey unit called for a 25% scan coverage on the floor, lower walls, and roof and a 5% scan coverage on the ceiling and upper walls. The surfaces were scanned using a Ludlum Model 2350-1 with a Ludlum 43-68 detector or a Ludlum 2350-1 with a Ludlum 43-37 detector. The Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 50 of 2468 range of observed background in the survey unit was 116 cpm to 321 cpm, with an average background of 222 cpm. No scan alarms were observed in this survey unit with the scan alarm set-point set at the MDCR plus background. Fifty-nine (59) static measurements were collected in the survey unit to satisfy the requirement of at least one (1) static measurement, at the highest scan indication, per scan grid. The Ludlum 2350-1 with a Ludlum 43-68 detector was used to acquire static measurements. The maximum activity observed in the survey unit was 361 cpm (1,444 dpm/100 cm2), with an average activity of 225 cpm (898 dpm/100 cm2). No alarms were observed during the collection of static measurements for this survey unit with the static alarm set-point set at MDCR plus background. The maximum static MDC observed for the survey unit was 518 dpm/100 cm2. All smear results were less than the respective MDC for alpha and beta contamination. 2.3.13.2306311H - Turbine Building 592' Elevation Central Area Classifications: Floor and lower walls: Class 2 Ceiling, upper walls, roof: Class 3 The survey design for this survey unit called for a 25% scan coverage on the floor and lower walls and a 5% scan coverage on the ceiling, upper walls, and Sampling Room roof. The surfaces were scanned using a Ludlum Model 2350-1 with a Ludlum 43-68 detector or a Ludlum 2350-1 with a Ludlum 43-37 detector. The range of observed background in the survey unit was 133 cpm to 1,144 cpm, with an average background of 323 cpm. No scan alarms were observed in this survey unit with the scan alarm set-point set at the MDCR plus background. Thirty-seven (37) static measurements were collected in the survey unit to satisfy the requirement of at least one (1) static measurement, at the highest scan indication, per scan grid. The Ludlum 2350-1 with a Ludlum 43-68 detector was used to acquire static measurements. The maximum activity observed in the survey unit was 338 cpm (1,352 dpm/100 cm2), with an average activity of 255 cpm (1,019 dpm/100 cm2). No alarms were observed during the collection of static measurements for this survey unit with the static alarm set-point set at MDCR plus background. The maximum static MDC observed for the survey unit was 555 dpm/100 cm2. All smear results were less than the respective MDC for alpha and beta contamination. 2.3.13.2406312A - Turbine Building 592' Elevation North Area Classifications: Floor and lower walls: Class 2 Ceiling and upper walls: Class 3 The survey design for this survey unit called for a 25% scan coverage on the floor and lower walls and a 5% scan coverage on the ceiling and upper walls. The surfaces were scanned using a Ludlum Model 2350-1 with a Ludlum 43-68 detector or a Ludlum 2350-1 with a Ludlum 43-37 detector. The range of observed background in the survey unit was 137 cpm to 1,281 cpm, with an average background of 387 cpm. No scan alarms were observed in this survey unit with the scan alarm set-point set at the MDCR plus background.
Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 51 of 2468 Sixty (60) static measurements were collected in the survey unit to satisfy the requirement of at least one (1) static measurement, at the highest scan indication, per scan grid. The Ludlum 2350-1 with a Ludlum 43-68 detector was used to acquire static measurements. The maximum activity observed in the survey unit was 395 cpm (1,580 dpm/100 cm2), with an average activity of 225 cpm (898 dpm/100 cm2). No alarms were observed during the collection of static measurements for this survey unit with the static alarm set-point set at MDCR plus background. The maximum static MDC observed for the survey unit was 557 dpm/100 cm2. All smear results were less than the respective MDC for alpha and beta contamination. 2.3.13.2506312B - Turbine Building 592' Elevation North Area Classifications: Floor and lower walls: Class 2 Ceiling and upper walls: Class 3 The survey design for this survey unit called for a 25% scan coverage on the floor and lower walls and a 5% scan coverage on the ceiling and upper walls. The surfaces were scanned using a Ludlum Model 2350-1 with a Ludlum 43-68 detector or a Ludlum 2350-1 with a Ludlum 43-37 detector. The range of observed background in the survey unit was 99 cpm to 1,024 cpm, with an average background of 277 cpm. No scan alarms were observed in this survey unit with the scan alarm set-point set at the MDCR plus background. Fifty-four (54) static measurements were collected in the survey unit to satisfy the requirement of at least one (1) static measurement, at the highest scan indication, per scan grid. The Ludlum 2350-1 with a Ludlum 43-68 detector was used to acquire static measurements. The maximum activity observed in the survey unit was 314 cpm (1,256 dpm/100 cm2), with an average activity of 192 cpm (766 dpm/100 cm2). No alarms were observed during the collection of static measurements for this survey unit with the static alarm set-point set at MDCR plus background. The maximum static MDC observed for the survey unit was 507 dpm/100 cm2. All smear results were less than the respective MDC for alpha and beta contamination. 2.3.13.2606312C - Turbine Building 592' Elevation North Area Classifications: Floor and lower walls: Class 2 Ceiling and upper walls: Class 3 The survey design for this survey unit called for a 25% scan coverage on the floor and lower walls and a 5% scan coverage on the ceiling and upper walls. The surfaces were scanned using a Ludlum Model 2350-1 with a Ludlum 43-68 detector or a Ludlum 2350-1 with a Ludlum 43-37 detector. The range of observed background in the survey unit was 124 cpm to 1,080 cpm, with an average background of 285 cpm. No scan alarms were observed in this survey unit with the scan alarm set-point set at the MDCR plus background. Sixty (60) static measurements were collected in the survey unit to satisfy the requirement of at least one (1) static measurement, at the highest scan indication, per scan grid. The Ludlum 2350-1 with a Ludlum 43-68 detector was used to acquire static measurements. The maximum activity observed in the Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 52 of 2468 survey unit was 347 cpm (1,388 dpm/100 cm2), with an average activity of 232 cpm (927 dpm/100 cm2). No alarms were observed during the collection of static measurements for this survey unit with the static alarm set-point set at MDCR plus background. The maximum static MDC observed for the survey unit was 528 dpm/100 cm2. All smear results were less than the respective MDC for alpha and beta contamination. 2.3.13.2706312D - Turbine Building 592' Elevation North Area Classifications: Floor and lower walls: Class 2 Ceiling and upper walls: Class 3 The survey design for this survey unit called for a 25% scan coverage on the floor and lower walls and a 5% scan coverage on the ceiling and upper walls. The surfaces were scanned using a Ludlum Model 2350-1 with a Ludlum 43-68 detector or a Ludlum 2350-1 with a Ludlum 43-37 detector. The range of observed background in the survey unit was 86 cpm to 326 cpm, with an average background of 203 cpm. No scan alarms were observed in this survey unit with the scan alarm set-point set at the MDCR plus background. Fifty-five (55) static measurements were collected in the survey unit to satisfy the requirement of at least one (1) static measurement, at the highest scan indication, per scan grid. The Ludlum 2350-1 with a Ludlum 43-68 detector was used to acquire static measurements. The maximum activity observed in the survey unit was 313 cpm (1,252 dpm/100 cm2), with an average activity of 194 cpm (775 dpm/100 cm2). No alarms were observed during the collection of static measurements for this survey unit with the static alarm set-point set at MDCR plus background. The maximum static MDC observed for the survey unit was 528 dpm/100 cm2. All smear results were less than the respective MDC for alpha and beta contamination. 2.3.13.2806312E - Turbine Building 592' Elevation North Area Classifications: Floor, lower walls, and components: Class 2 Ceiling and upper walls: Class 3 The survey design for this survey unit called for a 25% scan coverage on the floor, lower walls, and components in the survey unit and a 5% scan coverage on the ceiling and upper walls. The surfaces and components were scanned using a Ludlum Model 2350-1 with a Ludlum 43-68 detector or a Ludlum 2350-1 with a Ludlum 43-37 detector. The range of observed background in the survey unit was 106 cpm to 1,152 cpm, with an average background of 282 cpm. No scan alarms were observed in this survey unit with the scan alarm set-point set at the MDCR plus background. Ninety (90) static measurements were collected in the survey unit to satisfy the requirement of at least one (1) static measurement, at the highest scan indication, per scan grid. The Ludlum 2350-1 with a Ludlum 43-68 detector was used to acquire static measurements. The maximum activity observed in the survey unit was 353 cpm (1,412 dpm/100 cm2), with an average activity of 182 cpm (726 dpm/100 cm2). No alarms were observed during the collection of static measurements for this survey unit with the Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 53 of 2468 static alarm set-point set at MDCR plus background. The maximum static MDC observed for the survey unit was 575 dpm/100 cm2. One smear result was greater than MDC, and the sample was sent to the on-site laboratory for gamma spectroscopy analysis. The gamma spectroscopy analysis results showed no plant-related radioactivity. All other smear results were less than the respective MDC for alpha and beta contamination. 2.3.13.2906401A - Turbine Building 609' Elevation North Area Classifications: Floor, lower walls, and components: Class 2 Ceiling and upper walls: Class 3 The survey design for this survey unit called for a 25% scan coverage on the floor, lower walls, instrument room roof, and components in the survey unit and a 5% scan coverage on the ceiling and upper walls. The surfaces and components were scanned using a Ludlum Model 2350-1 with a Ludlum 43-68 detector or a Ludlum 2350-1 with a Ludlum 43-37 detector. The range of observed background in the survey unit was 126 cpm to 1,028 cpm, with an average background of 363 cpm. No scan alarms were observed in this survey unit with the scan alarm set-point set at the MDCR plus background. One hundred ten (110) static measurements were collected in the survey unit to satisfy the requirement of at least one (1) static measurement, at the highest scan indication, per scan grid. The Ludlum 2350-1 with a Ludlum 43-68 detector was used to acquire static measurements. The maximum activity observed in the survey unit was 420 cpm (1,680 dpm/100 cm2), with an average activity of 227 cpm (909 dpm/100 cm2). No alarms were observed during the collection of static measurements for this survey unit with the static alarm set-point set at MDCR plus background. The maximum static MDC observed for the survey unit was 606 dpm/100 cm2. All smear results were less than the respective MDC for alpha and beta contamination. 2.3.13.3006401B - Turbine Building 609' Elevation South Area Classifications: Floor, lower walls, and components: Class 2 Ceiling and upper walls: Class 3 The survey design for this survey unit called for a 25% scan coverage on the floor, lower walls, and components in the survey unit and a 5% scan coverage on the ceiling and upper walls. The surfaces and components were scanned using a Ludlum Model 2350-1 with a Ludlum 43-68 detector or a Ludlum 2350-1 with a Ludlum 43-37 detector. The range of observed background in the survey unit was 134 cpm to 1,087 cpm, with an average background of 280 cpm. No scan alarms were observed in this survey unit with the scan alarm set-point set at the MDCR plus background. One hundred four (104) static measurements were collected in the survey unit to satisfy the requirement of at least one (1) static measurement, at the highest scan indication, per scan grid. The Ludlum 2350-1 with a Ludlum 43-68 detector was used to acquire static measurements. The maximum activity observed in the survey unit was 410 cpm (1,640 dpm/100 cm2), with an average activity of 222 cpm (886 dpm/100 cm2). No alarms were observed during the collection of static measurements for this survey unit with the static alarm set-point set at MDCR plus background. One (1) static measurement, at Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 54 of 2468 grid 96, is missing from the data report for the survey unit; but, a scan and smear were recorded, and both measurements were below applicable action levels. The maximum static MDC observed for the survey unit was 562 dpm/100 cm2. All smear results were less than the respective MDC for alpha and beta contamination. 2.3.13.3106505A - Turbine Building 617' Elevation South Area Classifications: Floor, lower walls, catwalk, and components: Class 2 Ceiling and upper walls: Class 3 The survey design for this survey unit called for a 25% scan coverage on the floor, lower walls, and components in the survey unit and a 5% scan coverage on the ceiling and upper walls. The surfaces and components were scanned using a Ludlum Model 2350-1 with a Ludlum 43-68 detector or a Ludlum 2350-1 with a Ludlum 43-37 detector. The range of observed background in the survey unit was 107 cpm to 984 cpm, with an average background of 331 cpm. No scan alarms were observed in this survey unit with the scan alarm set-point set at the MDCR plus background. Eighty-four (84) static measurements were collected in the survey unit to satisfy the requirement of at least one (1) static measurement, at the highest scan indication, per scan grid. The Ludlum 2350-1 with a Ludlum 43-68 detector was used to acquire static measurements. The maximum activity observed in the survey unit was 405 cpm (1,620 dpm/100 cm2), with an average activity of 201 cpm (886 dpm/100 cm2). No alarms were observed during the collection of static measurements for this survey unit with the static alarm set-point set at MDCR plus background. The maximum static MDC observed for the survey unit was 519 dpm/100 cm2. All smear results were less than the respective MDC for alpha and beta contamination. 2.3.13.3206505B - Turbine Building 617' Elevation South Area Classifications: Floor and lower walls: Class 2 Ceiling and upper walls: Class 3 The survey design for this survey unit called for a 25% scan coverage on the floor and lower walls and a 5% scan coverage on the ceiling and upper walls. The surfaces were scanned using a Ludlum Model 2350-1 with a Ludlum 43-68 detector or a Ludlum 2350-1 with a Ludlum 43-37 detector. The range of observed background in the survey unit was 199 cpm to 1,071 cpm, with an average background of 425 cpm. No scan alarms were observed in this survey unit with the scan alarm set-point set at the MDCR plus background. Fifty-five (55) static measurements were collected in the survey unit to satisfy the requirement of at least one (1) static measurement, at the highest scan indication, per scan grid. The Ludlum 2350-1 with a Ludlum 43-68 detector was used to acquire static measurements. The maximum activity observed in the survey unit was 383 cpm (1,532 dpm/100 cm2), with an average activity of 235 cpm (940 dpm/100 cm2). No alarms were observed during the collection of static measurements for this survey unit with the static alarm set-point set at MDCR plus background. The maximum static MDC observed for the survey unit was 989 dpm/100 cm2.
Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 55 of 2468 All smear results were less than the respective MDC for alpha and beta contamination. 2.3.13.3306505C - Turbine Building 617' Elevation South Area Classifications: Floor and lower walls: Class 2 Ceiling and upper walls: Class 3 The survey design for this survey unit called for a 25% scan coverage on the floor and lower walls and a 5% scan coverage on the ceiling and upper walls. The surfaces were scanned using a Ludlum Model 2350-1 with a Ludlum 43-68 detector or a Ludlum 2350-1 with a Ludlum 43-37 detector. The range of observed background in the survey unit was 174 cpm to 1,293 cpm, with an average background of 394 cpm. No scan alarms were observed in this survey unit with the scan alarm set-point set at the MDCR plus background. Seventy-one (71) static measurements were collected in the survey unit to satisfy the requirement of at least one (1) static measurement, at the highest scan indication, per scan grid. The Ludlum 2350-1 with a Ludlum 43-68 detector was used to acquire static measurements. The maximum activity observed in the survey unit was 506 cpm (2,024 dpm/100 cm2), with an average activity of 241 cpm (963 dpm/100 cm2). No alarms were observed during the collection of static measurements for this survey unit with the static alarm set-point set at MDCR plus background. The maximum static MDC observed for the survey unit was 572 dpm/100 cm2. All smear results were less than the respective MDC for alpha and beta contamination. 2.3.13.3406506A - Turbine Building 617' Elevation Central Area Classifications: Floor, lower walls, components: Class 2 Ceiling and upper walls: Class 3 The survey design for this survey unit called for a 25% scan coverage on the floor, lower walls, and components and a 5% scan coverage on the ceiling and upper walls. The surfaces and components were scanned using a Ludlum Model 2350-1 with a Ludlum 43-68 detector or a Ludlum 2350-1 with a Ludlum 43-37 detector. The range of observed background in the survey unit was 133 cpm to 617 cpm, with an average background of 302 cpm. No scan alarms were observed in this survey unit with the scan alarm set-point set at the MDCR plus background. Sixty-five (65) static measurements were collected in the survey unit to satisfy the requirement of at least one (1) static measurement, at the highest scan indication, per scan grid. The Ludlum 2350-1 with a Ludlum 43-68 detector was used to acquire static measurements. The maximum activity observed in the survey unit was 671 cpm (2,684 dpm/100 cm2), with an average activity of 235 cpm (940 dpm/100 cm2). No alarms were observed during the collection of static measurements for this survey unit with the static alarm set-point set at MDCR plus background. The maximum static MDC observed for the survey unit was 724 dpm/100 cm2. All smear results were less than the respective MDC for alpha and beta contamination.
Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 56 of 2468 2.3.13.3506506B - Turbine Building 617' Elevation Central Area Classifications: Floor, lower walls, components, and storage building roof: Class 2 Ceiling and upper walls: Class 3 The survey design for this survey unit called for a 25% scan coverage on the floor, lower walls, components, and storage building roof and a 5% scan coverage on the ceiling and upper walls. The surfaces and components were scanned using a Ludlum Model 2350-1 with a Ludlum 43-68 detector or a Ludlum 2350-1 with a Ludlum 43-37 detector. The range of observed background in the survey unit was 133 cpm to 617 cpm, with an average background of 302 cpm. No scan alarms were observed in this survey unit with the scan alarm set-point set at the MDCR plus background. Seventy (70) static measurements were collected in the survey unit to satisfy the requirement of at least one (1) static measurement, at the highest scan indication, per scan grid. The Ludlum 2350-1 with a Ludlum 43-68 detector was used to acquire static measurements. The maximum activity observed in the survey unit was 343 cpm (1,372 dpm/100 cm2), with an average activity of 204 cpm (816 dpm/100 cm2). No alarms were observed during the collection of static measurements for this survey unit with the static alarm set-point set at MDCR plus background. The maximum static MDC observed for the survey unit was 599 dpm/100 cm2. All smear results were less than the respective MDC for alpha and beta contamination. 2.3.13.3606506C - Turbine Building 617' Elevation Central Area Classifications: Floor, lower walls, and components: Class 2 Ceiling and upper walls: Class 3 The survey design for this survey unit called for a 25% scan coverage on the floor, lower walls, and components and a 5% scan coverage on the ceiling and upper walls. The surfaces and components were scanned using a Ludlum Model 2350-1 with a Ludlum 43-68 detector or a Ludlum 2350-1 with a Ludlum 43-37 detector. The range of observed background in the survey unit was 150 cpm to 1,097 cpm, with an average background of 363 cpm. No scan alarms were observed in this survey unit with the scan alarm set-point set at the MDCR plus background. Sixty-six (66) static measurements were collected in the survey unit to satisfy the requirement of at least one (1) static measurement, at the highest scan indication, per scan grid. The Ludlum 2350-1 with a Ludlum 43-68 detector was used to acquire static measurements. The maximum activity observed in the survey unit was 319 cpm (1,276 dpm/100 cm2), with an average activity of 222 cpm (888 dpm/100 cm2). No alarms were observed during the collection of static measurements for this survey unit with the static alarm set-point set at MDCR plus background. The maximum static MDC observed for the survey unit was 525 dpm/100 cm2. All smear results were less than the respective MDC for alpha and beta contamination.
Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 57 of 2468 2.3.13.3706506D - Turbine Building 617' Elevation Central Area Classifications: Floor, lower walls, and components: Class 2 Ceiling and upper walls: Class 3 The survey design for this survey unit called for a 25% scan coverage on the floor, lower walls, and components and a 5% scan coverage on the ceiling and upper walls. The surfaces and components were scanned using a Ludlum Model 2350-1 with a Ludlum 43-68 detector or a Ludlum 2350-1 with a Ludlum 43-37 detector. The range of observed background in the survey unit was 150 cpm to 1,051 cpm, with an average background of 372 cpm. One (1) scan alarm was observed in this survey unit with the scan alarm set-point set at the MDCR plus background. In response to the alarm, the ISOCS was deployed. The ISOCS gamma spectroscopy report identified no plant-derived radionuclides. Sixty-eight (68) static measurements were collected in the survey unit to satisfy the requirement of at least one (1) static measurement, at the highest scan indication, per scan grid. The Ludlum 2350-1 with a Ludlum 43-68 detector was used to acquire static measurements. The maximum activity observed in the survey unit was 552 cpm (2,208 dpm/100 cm2), with an average activity of 231 cpm (925 dpm/100 cm2). One (1) alarm was observed during the collection of static measurements for this survey unit with the static alarm set-point set at MDCR plus background. The static alarm was in conjunction with the scan alarm dictated above. The maximum static MDC observed for the survey unit was 608 dpm/100 cm2. All smear results were less than the respective MDC for alpha and beta contamination. 2.3.13.3806506E - Turbine Building 617' Elevation Central Area Classifications: Floor, lower walls, and components: Class 2 Ceiling and upper walls: Class 3 The survey design for this survey unit called for a 25% scan coverage on the floor, lower walls, and components and a 5% scan coverage on the ceiling and upper walls. The surfaces and components were scanned using a Ludlum Model 2350-1 with a Ludlum 43-68 detector or a Ludlum 2350-1 with a Ludlum 43-37 detector. The range of observed background in the survey unit was 149 cpm to 395 cpm, with an average background of 235 cpm. No scan alarms were observed in this survey unit with the scan alarm set-point set at the MDCR plus background. Eighty-four (84) static measurements were collected in the survey unit to satisfy the requirement of at least one (1) static measurement, at the highest scan indication, per scan grid. The Ludlum 2350-1 with a Ludlum 43-68 detector was used to acquire static measurements. The maximum activity observed in the survey unit was 341 cpm (1,364 dpm/100 cm2), with an average activity of 192 cpm (766 dpm/100 cm2). No alarms were observed during the collection of static measurements for this survey unit with the static alarm set-point set at MDCR plus background. The maximum static MDC observed for the survey unit was 579 dpm/100 cm2. All smear results were less than the respective MDC for alpha and beta contamination.
Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 58 of 2468 2.3.13.3906506F - Turbine Building 617' Elevation Central Area Classifications: Floor, lower walls, and components: Class 2 Ceiling and upper walls: Class 3 The survey design for this survey unit called for a 25% scan coverage on the floor, lower walls, and components and a 5% scan coverage on the ceiling and upper walls. The surfaces and components were scanned using a Ludlum Model 2350-1 with a Ludlum 43-68 detector or a Ludlum 2350-1 with a Ludlum 43-37 detector. The range of observed background in the survey unit was 140 cpm to 314 cpm, with an average background of 222 cpm. No scan alarms were observed in this survey unit with the scan alarm set-point set at the MDCR plus background. Eighty-one (81) static measurements were collected in the survey unit to satisfy the requirement of at least one (1) static measurement, at the highest scan indication, per scan grid. The Ludlum 2350-1 with a Ludlum 43-68 detector was used to acquire static measurements. The maximum activity observed in the survey unit was 305 cpm (1,220 dpm/100 cm2), with an average activity of 189 cpm (757 dpm/100 cm2). No alarms were observed during the collection of static measurements for this survey unit with the static alarm set-point set at MDCR plus background. The maximum static MDC observed for the survey unit was 518 dpm/100 cm2. All smear results were less than the respective MDC for alpha and beta contamination. 2.3.13.4006507A - Turbine Building 617' Elevation North Area Classifications: Floor, lower walls, roof, and components: Class 2 Ceiling and upper walls: Class 3 The survey design for this survey unit called for a 25% scan coverage on the floor, lower walls, and components and a 5% scan coverage on the ceiling and upper walls. The surfaces and components were scanned using a Ludlum Model 2350-1 with a Ludlum 43-68 detector or a Ludlum 2350-1 with a Ludlum 43-37 detector. The range of observed background in the survey unit was 168 cpm to 341 cpm, with an average background of 264 cpm. No scan alarms were observed in this survey unit with the scan alarm set-point set at the MDCR plus background. Sixty-one (61) static measurements were collected in the survey unit to satisfy the requirement of at least one (1) static measurement, at the highest scan indication, per scan grid. The Ludlum 2350-1 with a Ludlum 43-68 detector was used to acquire static measurements. The maximum activity observed in the survey unit was 387 cpm (1,548 dpm/100 cm2), with an average activity of 242 cpm (969 dpm/100 cm2). No alarms were observed during the collection of static measurements for this survey unit with the static alarm set-point set at MDCR plus background. The maximum static MDC observed for the survey unit was 571 dpm/100 cm2. All smear results were less than the respective MDC for alpha and beta contamination.
Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 59 of 2468 2.3.13.4106507B - Turbine Building 617' Elevation North Area Classifications: Floor, lower walls, and catwalk floor: Class 2 Ceiling and upper walls: Class 3 The survey design for this survey unit called for a 25% scan coverage on the floor, lower walls, and catwalk and a 5% scan coverage on the ceiling and upper walls. The surfaces were scanned using a Ludlum Model 2350-1 with a Ludlum 43-68 detector or a Ludlum 2350-1 with a Ludlum 43-37 detector. The range of observed background in the survey unit was 115 cpm to 489 cpm, with an average background of 249 cpm. No scan alarms were observed in this survey unit with the scan alarm set-point set at the MDCR plus background. Fifty-seven (57) static measurements were collected in the survey unit to satisfy the requirement of at least one (1) static measurement, at the highest scan indication, per scan grid. The Ludlum 2350-1 with a Ludlum 43-68 detector was used to acquire static measurements. The maximum activity observed in the survey unit was 430 cpm (1,720 dpm/100 cm2), with an average activity of 216 cpm (864 dpm/100 cm2). No alarms were observed during the collection of static measurements for this survey unit with the static alarm set-point set at MDCR plus background. The maximum static MDC observed for the survey unit was 657 dpm/100 cm2. All smear results were less than the respective MDC for alpha and beta contamination. 2.3.13.4206507C - Turbine Building 617' Elevation North Area Classifications: Floor, lower walls, roof, and components: Class 2 Ceiling and upper walls: Class 3 The survey design for this survey unit called for a 25% scan coverage on the floor, lower walls, roof, and components in the survey unit and a 5% scan coverage on the ceiling and upper walls. The surfaces and components were scanned using a Ludlum Model 2350-1 with a Ludlum 43-68 detector or a Ludlum 2350-1 with a Ludlum 43-37 detector. The range of observed background in the survey unit was 140 cpm to 1,118 cpm, with an average background of 288 cpm. No scan alarms were observed in this survey unit with the scan alarm set-point set at the MDCR plus background. Fifty-six (56) static measurements were collected in the survey unit to satisfy the requirement of at least one (1) static measurement, at the highest scan indication, per scan grid. The Ludlum 2350-1 with a Ludlum 43-68 detector was used to acquire static measurements. The maximum activity observed in the survey unit was 452 cpm (1,808 dpm/100 cm2), with an average activity of 229 cpm (917 dpm/100 cm2). No alarms were observed during the collection of static measurements for this survey unit with the static alarm set-point set at MDCR plus background. The maximum static MDC observed for the survey unit was 644 dpm/100 cm2. All smear results were less than the respective MDC for alpha and beta contamination.
Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 60 of 2468 2.3.13.4306601A - Turbine Building 630' Elevation North Area Classifications: Floor and components: Class 2 Ceiling: Class 3 The survey design for this survey unit called for a 25% scan coverage on the floor and components in the survey unit and a 5% scan coverage on the ceiling. The surfaces and components were scanned using a Ludlum Model 2350-1 with a Ludlum 43-68 detector or a Ludlum 2350-1 with a Ludlum 43-37 detector. The range of observed background in the survey unit was 149 cpm to 1,097 cpm, with an average background of 491 cpm. One (1) scan alarm was observed in this survey unit with the scan alarm set-point set at the MDCR plus background. The Inspector-1000 was deployed in response to the alarm, and no plant-derived radionuclides were identified. Twenty-eight (28) static measurements were collected in the survey unit to satisfy the requirement of at least one (1) static measurement, at the highest scan indication, per scan grid. The Ludlum 2350-1 with a Ludlum 43-68 detector was used to acquire static measurements. The maximum activity observed in the survey unit was 327 cpm (1,308 dpm/100 cm2), with an average activity of 231 cpm (924 dpm/100 cm2). One (1) alarm was observed during the collection of static measurements for this survey unit with the static alarm set-point set at MDCR plus background. The static alarm is concurrent with the scan alarm dictated in the scan summary above. The maximum static MDC observed for the survey unit was 536 dpm/100 cm2. All smear results were less than the respective MDC for alpha and beta contamination. 2.3.13.4406601B - Turbine Building 630' Elevation South Area Classifications: Floor and components: Class 2 Ceiling: Class 3 The survey design for this survey unit called for a 25% scan coverage on the floor and components in the survey unit and a 5% scan coverage on the ceiling. The surfaces and components were scanned using a Ludlum Model 2350-1 with a Ludlum 43-68 detector or a Ludlum 2350-1 with a Ludlum 43-37 detector. The range of observed background in the survey unit was 147 cpm to 966 cpm, with an average background of 413 cpm. No scan alarms were observed in this survey unit with the scan alarm set-point set at the MDCR plus background. Twenty-eight (28) static measurements were collected in the survey unit to satisfy the requirement of at least one (1) static measurement, at the highest scan indication, per scan grid. The Ludlum 2350-1 with a Ludlum 43-68 detector was used to acquire static measurements. The maximum activity observed in the survey unit was 304 cpm (1,216 dpm/100 cm2), with an average activity of 209 cpm (834 dpm/100 cm2). No alarms were observed during the collection of static measurements for this survey unit with the static alarm set-point set at MDCR plus background. The maximum static MDC observed for the survey unit was 523 dpm/100 cm2. All smear results were less than the respective MDC for alpha and beta contamination.
Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 61 of 2468 2.3.13.4506708A - Turbine Building 642' Elevation South Area Classifications: Floor, lower walls, and components: Class 2 Ceiling and upper walls: Class 3 The survey design for this survey unit called for a 25% scan coverage on the floor, lower walls, and components in the survey unit and a 5% scan coverage on the ceiling and upper walls. The surfaces and components were scanned using a Ludlum Model 2350-1 with a Ludlum 43-68 detector or a Ludlum 2350-1 with a Ludlum 43-37 detector. The range of observed background in the survey unit was 107 cpm to 1,350 cpm, with an average background of 496 cpm. Two (2) scan alarms were observed in this survey unit with the scan alarm set-point set at the MDCR plus background. Two (2) discrete radioactive particles were discovered and disposed of. The gamma spectroscopy report for the first particle positively identified Co-60 at 5.22E-le positively identified Co-60 at 4.95E-elevated areas produced no alarms. Seventy-five (75) static measurements were collected in the survey unit to satisfy the requirement of at least one (1) static measurement, at the highest scan indication, per scan grid. The Ludlum 2350-1 with a Ludlum 43-68 detector was used to acquire static measurements. The maximum activity observed in the survey unit was 419 cpm (1,676 dpm/100 cm2), with an average activity of 242 cpm (967 dpm/100 cm2). No alarms were observed during the collection of static measurements for this survey unit with the static alarm set-point set at MDCR plus background. The maximum static MDC observed for the survey unit was 579 dpm/100 cm2. All smear results were less than the respective MDC for alpha and beta contamination. 2.3.13.4606708B - Turbine Building 642' Elevation South Area Classifications: Floor and lower walls: Class 2 Ceiling and upper walls: Class 3 The survey design for this survey unit called for a 25% scan coverage on the floor and lower walls and a 5% scan coverage on the ceiling and upper walls. The surfaces were scanned using a Ludlum Model 2350-1 with a Ludlum 43-68 detector or a Ludlum 2350-1 with a Ludlum 43-37 detector. The range of observed background in the survey unit was 168 cpm to 1,483 cpm, with an average background of 577 cpm. Two (2) scan alarms were observed in this survey unit with the scan alarm set-point set at the MDCR plus background. In response to the alarm for grid 6, the Inspector was deployed, and Co-60 was identified. For grid 1, a discrete radioactive particle was removed and analyzed using the on-site gamma spectroscopy system. The gamma spectroscopy results identified Co-60 at 2.95E-rface was reclassified as Class 1. Both elevated areas were cleaned and resurveyed with no alarms. Thirty-nine (39) static measurements were collected in the survey unit to satisfy the requirement of at least one (1) static measurement, at the highest scan indication, per scan grid. The Ludlum 2350-1 with a Ludlum 43-68 detector was used to acquire static measurements. The maximum activity observed in the survey unit was 427 cpm (1,708 dpm/100 cm2), with an average activity of 307 cpm (1,227 dpm/100 cm2). No alarms were observed during the collection of static measurements for this survey unit with Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 62 of 2468 the static alarm set-point set at MDCR plus background. The maximum static MDC observed for the survey unit was 650 dpm/100 cm2. All smear results were less than the respective MDC for alpha and beta contamination. 2.3.13.4706708C - Turbine Building 642' Elevation South Area Classifications: Floor, lower walls, and components: Class 2 Ceiling and upper walls: Class 3 The survey design for this survey unit called for a 25% scan coverage on the floor, lower walls, and components in the survey unit and a 5% scan coverage on the ceiling and upper walls. The surfaces were scanned using a Ludlum Model 2350-1 with a Ludlum 43-68 detector or a Ludlum 2350-1 with a Ludlum 43-37 detector. The range of observed background in the survey unit was 153 cpm to 1,213 cpm, with an average background of 392 cpm. No scan alarms were observed in this survey unit with the scan alarm set-point set at the MDCR plus background. Forty-nine (49) static measurements were collected in the survey unit to satisfy the requirement of at least one (1) static measurement, at the highest scan indication, per scan grid. The Ludlum 2350-1 with a Ludlum 43-68 detector was used to acquire static measurements. The maximum activity observed in the survey unit was 386 cpm (1,544 dpm/100 cm2), with an average activity of 209 cpm (837 dpm/100 cm2). No alarms were observed during the collection of static measurements for this survey unit with the static alarm set-point set at MDCR plus background. The maximum static MDC observed for the survey unit was 601 dpm/100 cm2. All smear results were less than the respective MDC for alpha and beta contamination. 2.3.13.4806708D - Turbine Building 642' Elevation South Area Classifications: Floor, lower walls, and components: Class 2 Ceiling and upper walls: Class 3 The survey design for this survey unit called for a 25% scan coverage on the floor, lower walls, and components in the survey unit and a 5% scan coverage on the ceiling and upper walls. The surfaces were scanned using a Ludlum Model 2350-1 with a Ludlum 43-68 detector or a Ludlum 2350-1 with a Ludlum 43-37 detector. The range of observed background in the survey unit was 150 cpm to 420 cpm, with an average background of 265 cpm. One (1) scan alarm was observed in this survey unit with the scan alarm set-point set at the MDCR plus background. The Inspector-1000 was deployed in response to the alarm, and no plant-derived radionuclides were identified. Seventy (70) static measurements were collected in the survey unit to satisfy the requirement of at least one (1) static measurement, at the highest scan indication, per scan grid. The Ludlum 2350-1 with a Ludlum 43-68 detector was used to acquire static measurements. The maximum activity observed in the survey unit was 870 cpm (3,480 dpm/100 cm2), with an average activity of 301 cpm (1,205 dpm/100 cm2). One (1) alarm was observed during the collection of static measurements for this survey unit with the static alarm set-point set at MDCR plus background. The static alarm occurred in the same location Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 63 of 2468 as the scan alarm dictated in the scan summary above. The maximum static MDC observed for the survey unit was 590 dpm/100 cm2. All smear results were less than the respective MDC for alpha and beta contamination. 2.3.13.4906709A - Turbine Building 642' Elevation Central Area Classifications: Floor, lower walls, components: Class 2 Ceiling and upper walls: Class 3 The survey design for this survey unit called for a 25% scan coverage on the floor, lower walls, and components in the survey unit and a 5% scan coverage on the ceiling and upper walls. In addition, a fabricated building was housed within the survey unit. The survey design for the fabricated building called for a 25% scan coverage of the lower exterior walls, first floor lower walls, and second floor lower walls and a 5% scan coverage on the upper exterior walls, first floor upper walls, and second floor upper walls. The surfaces and components were scanned using a Ludlum Model 2350-1 with a Ludlum 43-68 detector or a Ludlum 2350-1 with a Ludlum 43-37 detector. The range of observed background in the survey unit was 136 cpm to 962 cpm, with an average background of 284 cpm. No scan alarms were observed in this survey unit with the scan alarm set-point set at the MDCR plus background. Eighty-two (82) static measurements were collected in the survey unit to satisfy the requirement of at least one (1) static measurement, at the highest scan indication, per scan grid. The Ludlum 2350-1 with a Ludlum 43-68 detector was used to acquire static measurements. The maximum activity observed in the survey unit was 445 cpm (1,780 dpm/100 cm2), with an average activity of 219 cpm (877 dpm/100 cm2). No alarms were observed during the collection of static measurements for this survey unit with the static alarm set-point set at MDCR plus background. The maximum static MDC observed for the survey unit was 625 dpm/100 cm2. All smear results were less than the respective MDC for alpha and beta contamination. 2.3.13.5006709B - Turbine Building 642' Elevation Central Area Classifications: Floor, lower walls, components: Class 2 Ceiling and upper walls: Class 3 The survey design for this survey unit called for a 25% scan coverage on the floor, lower walls, and components in the survey unit and a 5% scan coverage on the ceiling and upper walls. The surfaces and components were scanned using a Ludlum Model 2350-1 with a Ludlum 43-68 detector or a Ludlum 2350-1 with a Ludlum 43-37 detector. The range of observed background in the survey unit was 104 cpm to 1,122 cpm, with an average background of 353 cpm. No scan alarms were observed in this survey unit with the scan alarm set-point set at the MDCR plus background. Forty-five (45) static measurements were collected in the survey unit to satisfy the requirement of at least one (1) static measurement, at the highest scan indication, per scan grid. The Ludlum 2350-1 with a Ludlum 43-68 detector was used to acquire static measurements. The maximum activity observed in the survey unit was 426 cpm (1,704 dpm/100 cm2), with an average activity of 288 cpm (1,152 dpm/100 cm2). No alarms were observed during the collection of static measurements for this survey unit with Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 64 of 2468 the static alarm set-point set at MDCR plus background. The maximum static MDC observed for the survey unit was 599 dpm/100 cm2. All smear results were less than the respective MDC for alpha and beta contamination. 2.3.13.5106709C - Turbine Building 642' Elevation Central Area Classifications: Floor, lower walls, components: Class 2 Ceiling and upper walls: Class 3 The survey design for this survey unit called for a 25% scan coverage on the floor, lower walls, and components in the survey unit and a 5% scan coverage on the ceiling and upper walls. The surfaces and components were scanned using a Ludlum Model 2350-1 with a Ludlum 43-68 detector or a Ludlum 2350-1 with a Ludlum 43-37 detector. The range of observed background in the survey unit was 172 cpm to 1,092 cpm, with an average background of 414 cpm. No scan alarms were observed in this survey unit with the scan alarm set-point set at the MDCR plus background. Thirty-eight (38) static measurements were collected in the survey unit to satisfy the requirement of at least one (1) static measurement, at the highest scan indication, per scan grid. The Ludlum 2350-1 with a Ludlum 43-68 detector was used to acquire static measurements. The maximum activity observed in the survey unit was 1,035 cpm (4,140 dpm/100 cm2), with an average activity of 300 cpm (1,201 dpm/100 cm2). No alarms were observed during the collection of static measurements for this survey unit with the static alarm set-point set at MDCR plus background. The maximum static MDC observed for the survey unit was 593 dpm/100 cm2. All smear results were less than the respective MDC for alpha and beta contamination. 2.3.13.5206709D - Turbine Building 642' Elevation Central Area Classifications: Floor, lower walls, components: Class 2 Ceiling and upper walls: Class 3 The survey design for this survey unit called for a 25% scan coverage on the floor, lower walls, and components in the survey unit and a 5% scan coverage on the ceiling and upper walls. The surfaces and components were scanned using a Ludlum Model 2350-1 with a Ludlum 43-68 detector or a Ludlum 2350-1 with a Ludlum 43-37 detector. The range of observed background in the survey unit was 164 cpm to 1,055 cpm, with an average background of 362 cpm. No scan alarms were observed in this survey unit with the scan alarm set-point set at the MDCR plus background. Thirty-six (36) static measurements were collected in the survey unit to satisfy the requirement of at least one (1) static measurement, at the highest scan indication, per scan grid. The Ludlum 2350-1 with a Ludlum 43-68 detector was used to acquire static measurements. The maximum activity observed in the survey unit was 518 cpm (2,072 dpm/100 cm2), with an average activity of 265 cpm (1,061 dpm/100 cm2). No alarms were observed during the collection of static measurements for this survey unit with the static alarm set-point set at MDCR plus background. The maximum static MDC observed for the survey unit was 617 dpm/100 cm2. All smear results were less than the respective MDC for alpha and beta contamination.
Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 65 of 2468 2.3.13.5306709E - Turbine Building 642' Elevation Central Area Classifications: Floor, lower walls, components: Class 2 Ceiling and upper walls: Class 3 The survey design for this survey unit called for a 25% scan coverage on the floor, lower walls, and components in the survey unit and a 5% scan coverage on the ceiling and upper walls. The surfaces and components were scanned using a Ludlum Model 2350-1 with a Ludlum 43-68 detector or a Ludlum 2350-1 with a Ludlum 43-37 detector. The range of observed background in the survey unit was 156 cpm to 372 cpm, with an average background of 258 cpm. No scan alarms were observed in this survey unit with the scan alarm set-point set at the MDCR plus background. Eighty-two (82) static measurements were collected in the survey unit to satisfy the requirement of at least one (1) static measurement, at the highest scan indication, per scan grid. The Ludlum 2350-1 with a Ludlum 43-68 detector was used to acquire static measurements. The maximum activity observed in the survey unit was 344 cpm (1,376 dpm/100 cm2), with an average activity of 205 cpm (820 dpm/100 cm2). No alarms were observed during the collection of static measurements for this survey unit with the static alarm set-point set at MDCR plus background. The maximum static MDC observed for the survey unit was 576 dpm/100 cm2. All smear results were less than the respective MDC for alpha and beta contamination. 2.3.13.5406709F - Turbine Building 642' Elevation Central Area Classifications: Floor, lower walls, components: Class 2 Ceiling and upper walls: Class 3 The survey design for this survey unit called for a 25% scan coverage on the floor, lower walls, and components in the survey unit and a 5% scan coverage on the ceiling and upper walls. The surfaces and components were scanned using a Ludlum Model 2350-1 with a Ludlum 43-68 detector or a Ludlum 2350-1 with a Ludlum 43-37 detector. The range of observed background in the survey unit was 155 cpm to 322 cpm, with an average background of 233 cpm. No scan alarms were observed in this survey unit with the scan alarm set-point set at the MDCR plus background. Sixty-five (65) static measurements were collected in the survey unit to satisfy the requirement of at least one (1) static measurement, at the highest scan indication, per scan grid. The Ludlum 2350-1 with a Ludlum 43-68 detector was used to acquire static measurements. The maximum activity observed in the survey unit was 336 cpm (1,344 dpm/100 cm2), with an average activity of 194 cpm (776 dpm/100 cm2). No alarms were observed during the collection of static measurements for this survey unit with the static alarm set-point set at MDCR plus background. The maximum static MDC observed for the survey unit was 551 dpm/100 cm2. All smear results were less than the respective MDC for alpha and beta contamination.
Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 66 of 2468 2.3.13.5506710A - Turbine Building 642' Elevation North Area Classifications: Floor and lower walls: Class 2 Ceiling and upper walls: Class 3 The survey design for this survey unit called for a 25% scan coverage on the floor and lower walls and a 5% scan coverage on the ceiling and upper walls. The surfaces were scanned using a Ludlum Model 2350-1 with a Ludlum 43-68 detector or a Ludlum 2350-1 with a Ludlum 43-37 detector. The range of observed background in the survey unit was 152 cpm to 1,258 cpm, with an average background of 407 cpm. No scan alarms were observed in this survey unit with the scan alarm set-point set at the MDCR plus background. Fifty-four (54) static measurements were collected in the survey unit to satisfy the requirement of at least one (1) static measurement, at the highest scan indication, per scan grid. The Ludlum 2350-1 with a Ludlum 43-68 detector was used to acquire static measurements. The maximum activity observed in the survey unit was 882 cpm (3,528 dpm/100 cm2), with an average activity of 322 cpm (1,288 dpm/100 cm2). No alarms were observed during the collection of static measurements for this survey unit with the static alarm set-point set at MDCR plus background. The maximum static MDC observed for the survey unit was 858 dpm/100 cm2. All smear results were less than the respective MDC for alpha and beta contamination. 2.3.13.5606710B - Turbine Building 642' Elevation North Area Classifications: Floor, lower walls, components: Class 2 Ceiling and upper walls: Class 3 The survey design for this survey unit called for a 25% scan coverage on the floor, lower walls, and components in the survey unit and a 5% scan coverage on the ceiling and upper walls. The surfaces and components were scanned using a Ludlum Model 2350-1 with a Ludlum 43-68 detector or a Ludlum 2350-1 with a Ludlum 43-37 detector. The range of observed background in the survey unit was 139 cpm to 1,294 cpm, with an average background of 358 cpm. No scan alarms were observed in this survey unit with the scan alarm set-point set at the MDCR plus background. Fifty-two (52) static measurements were collected in the survey unit to satisfy the requirement of at least one (1) static measurement, at the highest scan indication, per scan grid. The Ludlum 2350-1 with a Ludlum 43-68 detector was used to acquire static measurements. The maximum activity observed in the survey unit was 402 cpm (1,608 dpm/100 cm2), with an average activity of 245 cpm (982 dpm/100 cm2). No alarms were observed during the collection of static measurements for this survey unit with the static alarm set-point set at MDCR plus background. The maximum static MDC observed for the survey unit was 670 dpm/100 cm2. All smear results were less than the respective MDC for alpha and beta contamination.
Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 67 of 2468 2.3.13.5706710C - Turbine Building 642' Elevation North Area Classifications: Floor, lower walls, components: Class 2 Ceiling and upper walls: Class 3 The survey design for this survey unit called for a 25% scan coverage on the floor, lower walls, and components in the survey unit and a 5% scan coverage on the ceiling and upper walls. In addition, a fabricated building was housed within the survey unit. The survey design for the fabricated building called for a 25% scan coverage of the lower exterior walls and interior lower walls and a 5% scan coverage on the upper exterior walls and interior upper walls. The surfaces and components were scanned using a Ludlum Model 2350-1 with a Ludlum 43-68 detector or a Ludlum 2350-1 with a Ludlum 43-37 detector. The range of observed background in the survey unit was 138 cpm to 1,402 cpm, with an average background of 335 cpm. No scan alarms were observed in this survey unit with the scan alarm set-point set at the MDCR plus background. Forty-nine (49) static measurements were collected in the survey unit to satisfy the requirement of at least one (1) static measurement, at the highest scan indication, per scan grid. The Ludlum 2350-1 with a Ludlum 43-68 detector was used to acquire static measurements. The maximum activity observed in the survey unit was 503 cpm (2,012 dpm/100 cm2), with an average activity of 233 cpm (932 dpm/100 cm2). No alarms were observed during the collection of static measurements for this survey unit with the static alarm set-point set at MDCR plus background. The maximum static MDC observed for the survey unit was 661 dpm/100 cm2. All smear results were less than the respective MDC for alpha and beta contamination. 2.3.13.5806710D - Turbine Building 642' Elevation North Area Classifications: Floor, lower walls, components: Class 2 Ceiling and upper walls: Class 3 The survey design for this survey unit called for a 25% scan coverage on the floor, lower walls, and components in the survey unit and a 5% scan coverage on the ceiling and upper walls. The surfaces and components were scanned using a Ludlum Model 2350-1 with a Ludlum 43-68 detector or a Ludlum 2350-1 with a Ludlum 43-37 detector. The range of observed background in the survey unit was 141 cpm to 1,254 cpm, with an average background of 369 cpm. No scan alarms were observed in this survey unit with the scan alarm set-point set at the MDCR plus background. Forty-three (43) static measurements were collected in the survey unit to satisfy the requirement of at least one (1) static measurement, at the highest scan indication, per scan grid. The Ludlum 2350-1 with a Ludlum 43-68 detector was used to acquire static measurements. The maximum activity observed in the survey unit was 381 cpm (1,524 dpm/100 cm2), with an average activity of 252 cpm (1,008 dpm/100 cm2). No alarms were observed during the collection of static measurements for this survey unit with the static alarm set-point set at MDCR plus background. The maximum static MDC observed for the survey unit was 672 dpm/100 cm2. All smear results were less than the respective MDC for alpha and beta contamination.
Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 68 of 2468 2.3.13.5906801A - Turbine Building 656' Moisture Separator Safety Valve Gallery Classifications: Floor and lower walls: Class 2 Ceiling and upper walls: Class 3 The survey design for this survey unit called for a 25% scan coverage on the floor and lower walls and a 5% scan coverage on the ceiling, upper walls, and components in the survey unit. The surfaces and components were scanned using a Ludlum Model 2350-1 with a Ludlum 43-68 detector or a Ludlum 2350-1 with a Ludlum 43-37 detector. The range of observed background in the survey unit was 244 cpm to 382 cpm, with an average background of 312 cpm. No scan alarms were observed in this survey unit with the scan alarm set-point set at the MDCR plus background. Twenty (20) static measurements were collected in the survey unit to satisfy the requirement of at least one (1) static measurement, at the highest scan indication, per scan grid. The Ludlum 2350-1 with a Ludlum 43-68 detector was used to acquire static measurements. The maximum activity observed in the survey unit was 450 cpm (1,800 dpm/100 cm2), with an average activity of 312 cpm (1,249 dpm/100 cm2). No alarms were observed during the collection of static measurements for this survey unit with the static alarm set-point set at MDCR plus background. The maximum static MDC observed for the survey unit was 534 dpm/100 cm2. All smear results were less than the respective MDC for alpha and beta contamination. 2.3.13.6006801B - Turbine Building 656' Moisture Separator Safety Valve Gallery Classifications: Floor and lower walls: Class 2 Ceiling and upper walls: Class 3 The survey design for this survey unit called for a 25% scan coverage on the floor and lower walls and a 5% scan coverage on the ceiling, upper walls, and components in the survey unit. The surfaces and components were scanned using a Ludlum Model 2350-1 with a Ludlum 43-68 detector or a Ludlum 2350-1 with a Ludlum 43-37 detector. The range of observed background in the survey unit was 196 cpm to 358 cpm, with an average background of 285 cpm. No scan alarms were observed in this survey unit with the scan alarm set-point set at the MDCR plus background. Twenty (20) static measurements were collected in the survey unit to satisfy the requirement of at least one (1) static measurement, at the highest scan indication, per scan grid. The Ludlum 2350-1 with a Ludlum 43-68 detector was used to acquire static measurements. The maximum activity observed in the survey unit was 396 cpm (1,584 dpm/100 cm2), with an average activity of 289 cpm (1,155 dpm/100 cm2). No alarms were observed during the collection of static measurements for this survey unit with the static alarm set-point set at MDCR plus background. The maximum static MDC observed for the survey unit was 566 dpm/100 cm2. All smear results were less than the respective MDC for alpha and beta contamination.
Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 69 of 2468 2.3.13.6106901A - Turbine Building 712' Roof Classifications: All surfaces: Class 2 The survey design for this survey unit called for a 25% scan coverage on all surfaces within the survey unit. The surfaces were scanned using a Ludlum Model 2350-1 with a Ludlum 44-10 detector. The range of observed background in the survey unit was 2,324 cpm to 5,268 cpm, with an average background of 3,617 cpm. One (1) scan alarm was observed in this survey unit with the scan alarm set-point set at the MDCR plus background. The alarm indicated, for grid 15, a discrete radioactive particle which was subsequently disposed of. The gamma spectroscopy report for the particle positively identified Co-60 at 1.13E-e grid was resurveyed with no alarms. One hundred three (103) static measurements were collected in the survey unit to satisfy the requirement of at least one (1) static measurement, at the highest scan indication, per scan grid. The Ludlum 2350-1 with a Ludlum 44-10 detector was used to acquire static measurements. The maximum activity observed in the survey unit was 58,168 cpm (290,840 dpm/100 cm2), with an average activity of 4,082 cpm (10,410 dpm/100 cm2). One (1) alarm was observed during the collection of static measurements for this survey unit with the static alarm set-point set at MDCR plus background. The static alarm occurred in the same location as the scan alarm dictated in the scan summary above. The maximum static MDC observed for the survey unit was 2,663 dpm/100 cm2. All smear results were less than the respective MDC for alpha and beta contamination. 2.3.13.6206901B - Turbine Building 642' Roof Classifications: All surfaces: Class 2 The survey design for this survey unit called for a 25% scan coverage on all surfaces within the survey unit. The surfaces were scanned using a Ludlum Model 2350-1 with a Ludlum 43-68 detector. The range of observed background in the survey unit was 304 cpm to 782 cpm, with an average background of 589 cpm. One (1) scan alarm was observed in this survey unit with the scan alarm set-point set at the MDCR plus background. The Canberra Inspector-1000 LaBr detector was deployed in response to the alarms, and no plant-related activity was discovered. Six (6) static measurements were collected in the survey unit to satisfy the requirement of at least one (1) static measurement, at the highest scan indication, per scan grid. The Ludlum 2350-1 with a Ludlum 43-68 detector was used to acquire static measurements. The maximum activity observed in the survey unit was 875 cpm (3,500 dpm/100 cm2), with an average activity of 782 cpm (3,128 dpm/100 cm2). No alarms were observed during the collection of static measurements for this survey unit with the static alarm set-point set at MDCR plus background. The maximum static MDC observed for the survey unit was 828 dpm/100 cm2. All smear results were less than the respective MDC for alpha and beta contamination.
Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 70 of 2468 2.3.13.6306901C - Turbine Building 642' Roof Classifications: All surfaces: Class 2 The survey design for this survey unit called for a 25% scan coverage on all surfaces within the survey unit. The surfaces were scanned using a Ludlum Model 2350-1 with a Ludlum 43-68 detector. The range of observed background in the survey unit was 495 cpm to 690 cpm, with an average background of 613 cpm. No scan alarms were observed in this survey unit with the scan alarm set-point set at the MDCR plus background. Six (6) static measurements were collected in the survey unit to satisfy the requirement of at least one (1) static measurement, at the highest scan indication, per scan grid. The Ludlum 2350-1 with a Ludlum 43-68 detector was used to acquire static measurements. The maximum activity observed in the survey unit was 858 cpm (3,432 dpm/100 cm2), with an average activity of 692 cpm (2,769 dpm/100 cm2). No alarms were observed during the collection of static measurements for this survey unit with the static alarm set-point set at MDCR plus background. The maximum static MDC observed for the survey unit was 781 dpm/100 cm2. All smear results were less than the respective MDC for alpha and beta contamination. 2.3.13.6406901D - Turbine Building 666' Roof Classifications: All surfaces: Class 2 The survey design for this survey unit called for a 25% scan coverage on all surfaces within the survey unit. The surfaces were scanned using a Ludlum Model 2350-1 with a Ludlum 44-10 detector. The range of observed background in the survey unit was 2,587 cpm to 2,634 cpm, with an average background of 2,611 cpm. No scan alarms were observed in this survey unit with the scan alarm set-point set at the MDCR plus background. Ten (10) static measurements were collected in the survey unit to satisfy the requirement of at least one (1) static measurement, at the highest scan indication, per scan grid. The Ludlum 2350-1 with a Ludlum 44-10 detector was used to acquire static measurements. The maximum activity observed in the survey unit was 2,771 cpm (13,855 dpm/100 cm2), with an average activity of 2,644 cpm (13,219 dpm/100 cm2). No alarms were observed during the collection of static measurements for this survey unit with the static alarm set-point set at MDCR plus background. The maximum static MDC observed for the survey unit was 1,925 dpm/100 cm2. All smear results were less than the respective MDC for alpha and beta contamination. 2.3.13.6506902A - Turbine Building West Exterior Classifications: Lower walls: Class 2 Upper walls: Class 3 The survey design for this survey unit called for a 25% scan coverage on the exterior lower walls and a 5% scan coverage on the exterior upper walls. The surfaces were scanned using a Ludlum Model 2350-1 Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 71 of 2468 with a Ludlum 43-68 detector or a Ludlum 2350-1 with a Ludlum 43-37 detector. The range of observed background in the survey unit was 185 cpm to 387 cpm, with an average background of 275 cpm. One (1) scan alarm was observed in this survey unit with the scan alarm set-point set at the MDCR plus background. The Inspector was deployed in response to the alarm, and no plant-derived radionuclides were identified. Twenty-eight (28) static measurements were collected in the survey unit to satisfy the requirement of at least one (1) static measurement, at the highest scan indication, per scan grid. The Ludlum 2350-1 with a Ludlum 43-68 detector was used to acquire static measurements. The maximum activity observed in the survey unit was 483 cpm (1,932 dpm/100 cm2), with an average activity of 261 cpm (1,043 dpm/100 cm2). One (1) alarm was observed during the collection of static measurements for this survey unit with the static alarm set-point set at MDCR plus background. The static alarm occurred in the same location as the scan alarm dictated in the scan summary above. The maximum static MDC observed for the survey unit was 582 dpm/100 cm2. All smear results were less than the respective MDC for alpha and beta contamination. 2.3.13.6606902B - Turbine Building North Exterior Classifications: Lower walls: Class 2 Upper walls: Class 3 The survey design for this survey unit called for a 25% scan coverage on the exterior lower walls and a 5% scan coverage on the exterior upper walls. The surfaces were scanned using a Ludlum Model 2350-1 with a Ludlum 43-68 detector or a Ludlum 2350-1 with a Ludlum 43-37 detector. The range of observed background in the survey unit was 144 cpm to 347 cpm, with an average background of 241 cpm. No scan alarms were observed in this survey unit with the scan alarm set-point set at the MDCR plus background. Fifteen (15) static measurements were collected in the survey unit to satisfy the requirement of at least one (1) static measurement, at the highest scan indication, per scan grid. The Ludlum 2350-1 with a Ludlum 43-68 detector was used to acquire static measurements. The maximum activity observed in the survey unit was 367 cpm (1,468 dpm/100 cm2), with an average activity of 226 cpm (905 dpm/100 cm2). No alarms were observed during the collection of static measurements for this survey unit with the static alarm set-point set at MDCR plus background. The maximum static MDC observed for the survey unit was 551 dpm/100 cm2. All smear results were less than the respective MDC for alpha and beta contamination. 2.3.13.6706902C - Turbine Building South Exterior Classifications: Exterior Walls: Class 3 The survey design for this survey unit called for a 25% scan coverage on the exterior lower walls and a 5% scan coverage on the exterior upper walls. The surfaces were scanned using a Ludlum Model 2350-1 with a Ludlum 43-68 detector or a Ludlum 2350-1 with a Ludlum 43-37 detector. The range of observed background in the survey unit was 203 cpm to 235 cpm, with an average background of 223 cpm. No Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 72 of 2468 scan alarms were observed in this survey unit with the scan alarm set-point set at the MDCR plus background. Ten (10) static measurements were collected in the survey unit to satisfy the requirement of at least one (1) static measurement, at the highest scan indication, per scan grid. The Ludlum 2350-1 with a Ludlum 43-68 detector was used to acquire static measurements. The maximum activity observed in the survey unit was 411 cpm (1,644 dpm/100 cm2), with an average activity of 278 cpm (1,114 dpm/100 cm2). No alarms were observed during the collection of static measurements for this survey unit with the static alarm set-point set at MDCR plus background. The maximum static MDC observed for the survey unit was 470 dpm/100 cm2. All smear results were less than the respective MDC for alpha and beta contamination. 2.3.13.6806902D - Turbine Building East Exterior Classifications: Exterior walls: Class 3 The survey design for this survey unit called for a 5% scan coverage on the exterior lower walls and exterior upper walls. The surfaces were scanned using a Ludlum Model 2350-1 with a Ludlum 43-68 detector or a Ludlum 2350-1 with a Ludlum 43-37 detector. The range of observed background in the survey unit was 183 cpm to 378 cpm, with an average background of 231 cpm. No scan alarms were observed in this survey unit with the scan alarm set-point set at the MDCR plus background. Fourteen (14) static measurements were collected in the survey unit to satisfy the requirement of at least one (1) static measurement, at the highest scan indication, per scan grid. The Ludlum 2350-1 with a Ludlum 43-68 detector was used to acquire static measurements. The maximum activity observed in the survey unit was 414 cpm (1,656 dpm/100 cm2), with an average activity of 246 cpm (983 dpm/100 cm2). No alarms were observed during the collection of static measurements for this survey unit with the static alarm set-point set at MDCR plus background. The maximum static MDC observed for the survey unit was 542 dpm/100 cm2. All smear results were less than the respective MDC for alpha and beta contamination. 2.3.13.6906902E - Turbine Building Heater Bay Exterior Classifications: Lower walls: Class 2 Upper walls: Class 3 The survey design for this survey unit called for a 25% scan coverage on the exterior lower walls and a 5% scan coverage on the exterior upper walls. The surfaces were scanned using a Ludlum Model 2350-1 with a Ludlum 43-68 detector or a Ludlum 2350-1 with a Ludlum 43-37 detector. The range of observed background in the survey unit was 139 cpm to 331 cpm, with an average background of 225 cpm. No scan alarms were observed in this survey unit with the scan alarm set-point set at the MDCR plus background. Twenty (20) static measurements were collected in the survey unit to satisfy the requirement of at least one (1) static measurement, at the highest scan indication, per scan grid. The Ludlum 2350-1 with a Ludlum 43-68 detector was used to acquire static measurements. The maximum activity observed in the Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 73 of 2468 survey unit was 353 cpm (1,412 dpm/100 cm2), with an average activity of 218 cpm (873 dpm/100 cm2). No alarms were observed during the collection of static measurements for this survey unit with the static alarm set-point set at MDCR plus background. The maximum static MDC observed for the survey unit was 544 dpm/100 cm2. All smear results were less than the respective MDC for alpha and beta contamination. 2.3.14Unit 1 Containment 2.3.14.101401A - Unit 1 Containment Roof Classifications: All surfaces: Class 2 The survey design for this survey unit called for a 25% scan coverage on all surfaces within the survey unit. The surfaces were scanned using a Ludlum Model 2350-1 with a Ludlum 44-10 detector. The range of observed background in the survey unit was 2,251 cpm to 3,647 cpm, with an average background of 2,965 cpm. Three (3) scan alarms were observed in this survey unit with the scan alarm set-point set at the MDCR plus background. No alarms were reproduced upon rescan of the area. Twelve (12) smears were collected in the survey unit to satisfy the requirement of at least one (1) smear measurement, at the highest scan indication, per scan grid. All smear results were less than the respective MDC for alpha and beta contamination. No static measurements were acquired for this survey unit. 2.3.14.201402A - Unit 1 Containment Exterior Classifications: Concrete above 2 meters and metal siding: Class 2 Concrete below 2 meters: Class 3 The survey design for this survey unit called for a 25% scan coverage on the concrete below 2 meters, a 5% scan coverage on the concrete above 2 meters, and a 100% scan coverage on the metal siding. The range of observed background in the survey unit was 261 cpm to 657 cpm, with an average background of 371 cpm. No scan alarms were observed in this survey unit with the scan alarm set-point set at the MDCR plus background. Thirty (30) static measurements were collected in the survey unit to satisfy the requirement of at least one (1) static measurement, at the highest scan indication, per scan grid. The Ludlum 2350-1 with a Ludlum 43-68 detector was used to acquire static measurements. The maximum activity observed in the survey unit was 420 cpm (1,680 dpm/100 cm2), with an average activity of 218 cpm (1,299 dpm/100 cm2). No alarms were observed during the collection of static measurements for this survey unit with the static alarm set-point set at MDCR plus background. The maximum static MDC observed for the survey unit was 758 dpm/100 cm2. All smear results were less than the respective MDC for alpha and beta contamination.
Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 74 of 2468 2.3.15Unit 2 Containment 2.3.15.102401A - Unit 2 Containment Roof Classifications: All surfaces: Class 2 The survey design for this survey unit called for a 25% scan coverage on all surfaces within the survey unit. The surfaces were scanned using a Ludlum Model 2350-1 with a Ludlum 44-10 detector. The range of observed background in the survey unit was 1,544 cpm to 2,314 cpm, with an average background of 1,828 cpm. No scan alarms were observed in this survey unit with the scan alarm set-point set at the MDCR plus background. Twelve (12) smears were collected in the survey unit to satisfy the requirement of at least one (1) smear measurement, at the highest scan indication, per scan grid. All smear results were less than the respective MDC for alpha and beta contamination. No static measurements were acquired for this survey unit. 2.3.15.202402A - Unit 2 Containment Exterior Classifications: Concrete above 2 meters and metal siding: Class 2 Concrete below 2 meters: Class 3 The survey design for this survey unit called for a 25% scan coverage on the concrete below 2 meters, a 5% scan coverage on the concrete above 2 meters, and a 100% scan coverage on the metal siding. The range of observed background in the survey unit was 191 cpm to 495 cpm, with an average background of 300 cpm. No scan alarms were observed in this survey unit with the scan alarm set-point set at the MDCR plus background. Thirty-five (35) static measurements were collected in the survey unit to satisfy the requirement of at least one (1) static measurement, at the highest scan indication, per scan grid. The Ludlum 2350-1 with a Ludlum 43-68 detector was used to acquire static measurements. The maximum activity observed in the survey unit was 598 cpm (2,392 dpm/100 cm2), with an average activity of 294 cpm (1,177 dpm/100 cm2). No alarms were observed during the collection of static measurements for this survey unit with the static alarm set-point set at MDCR plus background. The maximum static MDC observed for the survey unit was 660 dpm/100 cm2. All smear results were less than the respective MDC for alpha and beta contamination. 2.3.16Vertical Concrete Cask (VCC) Pad 2.3.16.110212A - VCC Pad Classifications: All surfaces: Class 2 The survey design for this survey unit called for a 25% scan coverage all surfaces in the survey unit. The surfaces were scanned using a Ludlum Model 2350-1 with a Ludlum 43-68 detector or a Ludlum 2350-1 with a Ludlum 43-37 detector. The range of observed background in the survey unit was 197 cpm to Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 75 of 2468 1,151 cpm, with an average background of 516 cpm. No scan alarms were observed in this survey unit with the scan alarm set-point set at the MDCR plus background. Thirty-six (36) static measurements were collected in the survey unit to satisfy the requirement of at least one (1) static measurement, at the highest scan indication, per scan grid. The Ludlum 2350-1 with a Ludlum 43-68 detector was used to acquire static measurements. The maximum activity observed in the survey unit was 430 cpm (1,720 dpm/100 cm2), with an average activity of 343 cpm (1,371 dpm/100 cm2). No alarms were observed during the collection of static measurements for this survey unit with the static alarm set-point set at MDCR plus background. The maximum static MDC observed for the survey unit was 482 dpm/100 cm2. All smear results were less than the respective MDC for alpha and beta contamination. 3SUMMARY AND CONCLUSIONS The scan results for each of the 115 survey units summarized in Section 2.3 are shown to meet the scan acceptance criteria from Section 2.2.1 and in [2]. The URS survey plan did not require a specific evaluation of the static (i.e. fixed-point) measurements and this type of evaluation was requested by the NRC staff as part of the LTP review and approval process to demonstrate whether the surveys would have met MARSSIM survey design requirements. Therefore, the evaluation of the static measurements was performed through a separate Technical Support Document [3]. This evaluation established a free release criteria that correlated with a Critical Level for each of 113 survey units and determined whether the results would have passed the Sign test and whether an appropriate number of static measurement were taken. [Note that two of of the Survey units did not include static measurements and were only scanned. Therefore, 113 SUs vs 115 were included in the evaluation. The analysis shows that 109 of 113 survey units pass the Sign test when using the critical level (Lc) as a surrogate DCGL. Four survey units fail the sign test, however, in three of these cases, the failures are from a very close margin on the statistical test involving S+ and the Critical Value and in the last case, it appears that the measured background was too low compared to the static measurement values. In the measurement data set, three of the survey units contained only one (1) ambient background measurement which prevents the calculation of a standard deviation for these units. Therefore, for these three survey units, the average coefficient of variation (27%) for all 919 ambient background measurements was scaled against the measured ambient background value for each of these three units as an estimate of the standard deviation. The design and implementation of the unconditional release surveys was similar to MARSSIM surveys regarding the use of data quality objectives and data quality assessment processes. Three principal differences between a MARSSIM survey design and the ZS design for the unconditional release surveys were: The ZS survey design generally selected more fixed-measurement locations for each survey unit than what a MARSSIM design would dictate. The selection of the fixed-point measurement locations was biased to locations that may have contained licensed materials rather than using a random process whereas a MARSSIM design would be predicated on a random selection process (depending on classification).
Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 76 of 2468 The acceptance criteria was based on the scan results rather than the fixed point measurement results using a discrete acceptance criteria of scan-MDCR plus the background count rate for each survey unit during scanning. In a MARSSIM-designed survey, the scan-MDCR is compared against the DCGLEMC which was not used for unconditional release surveys. The data shows that the scan measurement data and a large fraction of the static measurement data both meet the unconditional release acceptance criteria that was applied. In other words, all individual measurements (scan and static) were less than the scan-MDCR plus background and that all measurements were less than 5000 dpm/100cm2. This analysis also shows that 96% of all static measurements for each survey unit separately would pass the sign test criteria when we conservatively corresponding to 5%, approximately 5% of the survey units would be expected to statistically fail this test. Furthermore, this analysis identifies twelve survey units where the number of static measurements were less than what would have been prescribed by MARSSIM. Of these, nine passed the Sign test criteria as described above and three failed. However some of these units would have been combined with other larger adjacent units, thereby eliminating this condition had the survey been designed and implemented as MARSSIM surveys. 4REFERENCES [1] "ZSRP License Termination Plan (LTP)". [2] ZionSolutions procedure ZS-LT-400-001-001, "Unconditional Release of Materials, Equipment and Secondary Structures". [3] TSD 17-007 Rev. 01, Evaluation of Static Measurements Performed for Unconditional Release Surveys of Building Materials Used for Backfill at the Zion Decommissioning Project, 2017. [4] "NUREG-1575, Multi-Agency Radiation Survey and Site Investigation Manual (MARSSIM), Revision 1," 2000. [5] ZS-LT-01, "Quality Assurance Project Plan for Characterization and FSS" (QAPP). [6] ZionSolutions procedure RP-ZN-503, "Unconditional Release Survey Method from Radiologically Controlled Areas". [7] I.E. Circular No. 81-07, "Control of Radioactively Contaminated Materials". [8] HPPOS-071, "Control of Radioactively Contaminated Material". [9] HPPOS-073, "Surveys of Wastes from Nuclear Reactor Facilities Before Disposal".
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Attachment 1 - Tables and Figures Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 78 of 2468 Attachment Figure 1-1 ZSRP Site Map Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 79 of 2468 Attachment Table 1-1 09300 Download Reports Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 80 of 2468 Attachment Table 1-1 09300 Download Reports Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 81 of 2468 Attachment Table 1-1 09300 Download Reports Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 82 of 2468 Attachment Table 1-1 09300 Download Reports Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 83 of 2468 Attachment Table 1-1 09300 Download Reports Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 84 of 2468 Attachment Table 1-1 09300 Download Reports Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 85 of 2468 Attachment Table 1-1 09300 Download Reports Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 86 of 2468 Attachment Table 1-1 09300 Download Reports Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 87 of 2468 Attachment Table 1-1 09300 Download Reports Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 88 of 2468 Attachment Table 1-1 09300 Download Reports Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 89 of 2468 Attachment Table 1-1 09300 Download Reports Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 90 of 2468 Attachment Table 1-1 09300 Download Reports Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 91 of 2468 Attachment Table 1-1 09300 Download Reports Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 92 of 2468 Attachment Figure 1-2 09300 Survey Maps Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 93 of 2468 Attachment Figure 1-1 09300 Survey Maps Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 94 of 2468 Attachment Figure 1-1 09300 Survey Maps Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 95 of 2468 Attachment Figure 1-1 09300 Survey Maps Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 96 of 2468 Attachment Table 1-2 09701 Download Reports Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 97 of 2468 Attachment Table 1-1 09701 Download Reports Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 98 of 2468 Attachment Table 1-1 09701 Download Reports Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 99 of 2468 Attachment Table 1-1 09701 Download Reports Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 100 of 2468 Attachment Table 1-1 09701 Download Reports Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 101 of 2468 Attachment Figure 1-3 09701 Survey Maps Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 102 of 2468 Attachment Figure 1-1 09701 Survey Maps Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 103 of 2468 Attachment Figure 1-1 09701 Survey Maps Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 104 of 2468 Attachment Table 1-3 09702 & 09703 Download Reports Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 105 of 2468 Attachment Table 1-2 09702 & 09703 Download Reports Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 106 of 2468 Attachment Table 1-2 09702 & 09703 Download Reports Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 107 of 2468 Attachment Table 1-2 09702 & 09703 Download Reports Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 108 of 2468 Attachment Table 1-2 09702 & 09703 Download Reports Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 109 of 2468 Attachment Figure 1-4 09702 & 09703 Survey Maps Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 110 of 2468 Attachment Figure 1-2 09702 & 09703 Survey Maps Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 111 of 2468 Attachment Table 1-4 08200A Download Reports Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 112 of 2468 Attachment 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2468 Attachment Table 1-7 08301 Download Reports Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 141 of 2468 Attachment Table 1-7 08301 Download Reports Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 142 of 2468 Attachment Table 1-7 08301 Download Reports Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 143 of 2468 Attachment Table 1-7 08301 Download Reports Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 144 of 2468 Attachment Figure 1-8 08301 Survey Maps Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 145 of 2468 Attachment Figure 1-7 08301 Survey Maps Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 146 of 2468 Attachment Figure 1-7 08301 Survey Maps Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 147 of 2468 Attachment Table 1-8 07001A Download Reports Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 148 of 2468 Attachment Table 1-8 07001A Download Reports Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 149 of 2468 Attachment Table 1-8 07001A Download Reports Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 150 of 2468 Attachment Table 1-8 07001A Download Reports Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 151 of 2468 Attachment Table 1-8 07001A Download Reports Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 152 of 2468 Attachment Table 1-8 07001A Download Reports Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 153 of 2468 Attachment Figure 1-9 07001A Survey Maps No survey maps available Zion Station Restoration Project Technical Support Document TSD 17-010 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Figure 1-14 07002B Survey Maps Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 186 of 2468 Attachment Figure 1-12 07002B Survey Maps Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 187 of 2468 Attachment Table 1-14 07002C Download Reports Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 188 of 2468 Attachment Table 1-13 07002C Download Reports Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 189 of 2468 Attachment Figure 1-15 07002C Survey Maps Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 190 of 2468 Attachment Table 1-15 07101 Download Reports Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 191 of 2468 Attachment Table 1-14 07101 Download Reports Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 192 of 2468 Attachment 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06902C Download Reports Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 1367 of 2468 Attachment Table 1-107 06902C Download Reports Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 1368 of 2468 Attachment Figure 1-109 06902C Survey Maps Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 1369 of 2468 Attachment Table 1-109 06902D Download Reports Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 1370 of 2468 Attachment Table 1-108 06902D Download Reports Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 1371 of 2468 Attachment Table 1-108 06902D Download Reports Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 1372 of 2468 Attachment Table 1-108 06902D Download Reports Zion Station Restoration Project Technical Support Document TSD 17-010 Revision 1 Page 1373 of 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