ML102720603

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Table Summarizing Review of All Features, Events and Processes
ML102720603
Person / Time
Site: 06300001
Issue date: 12/02/2010
From: Leslie B
NRC/NMSS/DHLWRS
To: Guttmann J
NRC/NMSS/DHLWRS
Gwo J 301-287-9149
References
ML102720603
Download: ML102720603 (17)


Text

December 2, 2010 MEMORANDUM FOR:

Jack Guttmann, Chief Performance Assessment Branch, HLWRS FROM:

Bret Leslie, Senior Project Manager Performance Assessment Branch, HLWRS

SUBJECT:

TABLE SUMMARIZING REVIEW OF ALL FEATURES, EVENTS, AND PROCESSES A table is included as an enclosure to this memorandum. The enclosed table documents that all 374 features, events, and processes (FEPs) listed in the Safety Analysis Report (SAR) Table 2.2-5 [U.S. Department of Energy (DOE), 2009] were reviewed by the U.S. Nuclear Regulatory Commission (NRC) staff as part of its review of DOEs scenario analysis (SAR Section 2.2; DOE, 2009). SAR Table 2.2-5 contains the complete listing of FEPs considered by DOE in its license application. The enclosed table was developed by the NRC staff as part of its review DOEs identification of a list of FEPs and DOEs screening of the list of FEPs. The screening of the list of FEPs results in the identification of FEPs that are excluded from the performance assessment compliance analyses and identification of those FEPs that are included in the performance assessment compliance analyses. We developed the table, in part, to document that for each FEP that was excluded by DOE the NRC staff: (i) reviewed the technical basis for exclusion (SNL, 2008); and (ii) determined whether an adequate technical basis for exclusion of each FEP had been provided. If the NRC staffs review determined that the technical basis for excluding a FEP (SNL, 2008) needed clarification or additional information for the NRC staff to make a determination on the adequacy of the technical basis, then the NRC staff requested additional information from DOE (those FEPs are specifically addressed in Safety Evaluation Report Section 2.2.1.2.1.3.2 ). The enclosed table is similar to Table 5.1.2.1-2 in the Integrated Issue Resolution Status Report (NRC, 2005).

The first row of the enclosed table has the headers for each of the columns of the table.

Starting from the left, the term Tracking No refers to the FEP number listed in SAR Table 2.2-5, and the term FEP Title refers to FEP Name in SAR Table 2.2-5. The remaining header terms are notations that refer to integrated subissues used in NRC (2005). In the following sentences, for each of these terms, I have also identified in parentheses the corresponding section of the NRC staffs safety evaluation report (SER) or explained the terms relationship to the NRC staffs licensing scenario analysis review. The term ENG1 refers to the Degradation of Engineered Barriers integrated subissue (SER Section 2.2.1.3.1). The term ENG2 refers to the Mechanical Disruption of Engineered Barriers integrated subissue (SER Section 2.2.1.3.2).

The term ENG3 refers to the Quantity and Chemistry of Water Contacting Waste Packages and Waste Forms integrated subissue (SER Section 2.2.1.3.3). The term ENG4 refers to the Radionuclide Release Rates and Solubility Limits integrated subissue (SER Section 2.2.1.3.4).

The term UZ1 refers to the Climate and Infiltration integrated subissue (SER Section 2.2.1.3.5). The term UZ2 refers to the Flow Paths in the Unsaturated Zone integrated subissue (SER Section 2.2.1.3.6). The term UZ3 refers to the Radionuclide Transport in the Unsaturated Zone integrated subissue (SER Section 2.2.1.3.7). The term SZ1 refers to the

2 Flow Paths in the Saturated Zone integrated subissue (SER Section 2.2.1.3.8). The term SZ2 refers to the Radionuclide Transport in the Saturated Zone integrated subissue (SER Section 2.2.1.3.9). The term Direct1 refers to the Volcanic Disruption of Waste Packages integrated subissue (SER Section 2.2.1.3.10). The term Direct2 refers to the Airborne Transport of Radionuclides integrated subissue (SER Section 2.2.1.3.13). The term Dose1 refers to the Representative Volume integrated subissue (SER Section 2.2.1.3.12). The term Dose2 refers to the Redistribution of Radionuclides in Soil integrated subissue (SER Section 2.2.1.3.13). The term Dose3 refers to the Biosphere Characteristics integrated subissue (SER Section 2.2.1.3.14).

The term TSPAI refers to Total System Performance Assessment and Integration. As described in NRC (2005) NRC used the integrated subissues structure to review information pertaining to the key technical issues (Executive Summary, Figure 1; NRC, 2005). The term TSPAI referred to Total System Performance Assessment and Integration key technical issue.

As depicted in NRC, Executive Summary, Figure 1 (2005) the TSPAI key technical issue included, as TSPAI2, scenario analysis and event probability. For the purposes of the enclosed table TSPAI refers to the scenario analysis team, rather than to one of the integrated subissues.

The enclosed table also identifies for each FEP (i.e., each row) through the use of light yellow shading whether the DOE included or excluded the FEP. A row of the table that is shaded yellow indicates that DOE included the FEP. The unshaded rows are FEPs that DOE excluded.

For each row (FEP) an X or Xs identify which technical areas (integrated subissue or the scenario analysis team) reviewed the FEP. For each row (FEP) the single black-filled box identifies the group of technical experts that had lead responsibility for reviewing, and where necessary, integrating the review of the multiple groups reviewing the DOEs information for an individual FEP. For example, for the included FEP 1.1.02.02.0A Preclosure Ventilation, the ENG2 and UZ2 groups reviewed the FEP and the UZ2 had the responsibility for integrating the review of the two groups. Another example for how staff conducted its integrated review of FEPs can be seen by looking at information provided in the table for the excluded FEP 1.1.02.03.0A Undesirable Materials Left. The ENG1, ENG3, UZ2, and UZ3 groups reviewed DOEs information, including the technical basis for exclusion (SNL, 2008), for FEP 1.1.02.03.0A Undesirable Materials Left and the ENG3 group had the responsibility for integrating the review of the four groups and determining whether DOE had provided an adequate basis for excluding the FEP.

References DOE. 2009. DOE/RW-0573, Yucca Mountain Repository License Application. Rev. 1.

ML090700817. Las Vegas, Nevada: DOE, Office of Civilian Radioactive Waste Management.

NRC. 2005. NUREG-1762, Integrated Issue Resolution Status Report. Rev. 1.

ML051360241. Washington, DC: NRC.

SNL. 2008. Features, Events, and Processes for the Total System Performance Assessment:

Analyses. ANL-WIS-MD-000027. Rev. 00. ACN 01, ERD 01, ERD 02. Las Vegas, Nevada:

Sandia National Laboratories.

3 CONTACT: Bret Leslie, NMSS/HLWRS (301) 492-3196

Enclosure:

NRC Staff Review for Each Feature, Event, and Process Listed in Safety Analysis Report Table 2.2-5 (DOE, 2009)

2 Flow Paths in the Saturated Zone integrated subissue (SER Section 2.2.1.3.8). The term SZ2 refers to the Radionuclide Transport in the Saturated Zone integrated subissue (SER Section 2.2.1.3.9). The term Direct1 refers to the Volcanic Disruption of Waste Packages integrated subissue (SER Section 2.2.1.3.10). The term Direct2 refers to the Airborne Transport of Radionuclides integrated subissue (SER Section 2.2.1.3.13). The term Dose1 refers to the Representative Volume integrated subissue (SER Section 2.2.1.3.12). The term Dose2 refers to the Redistribution of Radionuclides in Soil integrated subissue (SER Section 2.2.1.3.13). The term Dose3 refers to the Biosphere Characteristics integrated subissue (SER Section 2.2.1.3.14).

The term TSPAI refers to Total System Performance Assessment and Integration. As described in NRC (2005) NRC used the integrated subissues structure to review information pertaining to the key technical issues (Executive Summary, Figure 1; NRC, 2005). The term TSPAI referred to Total System Performance Assessment and Integration key technical issue. As depicted in NRC, Executive Summary, Figure 1 (2005) the TSPAI key technical issue included, as TSPAI2, scenario analysis and event probability. For the purposes of the enclosed table TSPAI refers to the scenario analysis team, rather than to one of the integrated subissues.

The enclosed table also identifies for each FEP (i.e., each row) through the use of light yellow shading whether the DOE included or excluded the FEP. A row of the table that is shaded yellow indicates that DOE included the FEP. The unshaded rows are FEPs that DOE excluded. For each row (FEP) an X or Xs identify which technical areas (integrated subissue or the scenario analysis team) reviewed the FEP.

For each row (FEP) the single black-filled box identifies the group of technical experts that had lead responsibility for reviewing, and where necessary, integrating the review of the multiple groups reviewing the DOEs information for an individual FEP. For example, for the included FEP 1.1.02.02.0A Preclosure Ventilation, the ENG2 and UZ2 groups reviewed the FEP and the UZ2 had the responsibility for integrating the review of the two groups. Another example for how staff conducted its integrated review of FEPs can be seen by looking at information provided in the table for the excluded FEP 1.1.02.03.0A Undesirable Materials Left. The ENG1, ENG3, UZ2, and UZ3 groups reviewed DOEs information, including the technical basis for exclusion (SNL, 2008), for FEP 1.1.02.03.0A Undesirable Materials Left and the ENG3 group had the responsibility for integrating the review of the four groups and determining whether DOE had provided an adequate basis for excluding the FEP.

References DOE. 2009. DOE/RW-0573, Yucca Mountain Repository License Application. Rev. 1. ML090700817.

Las Vegas, Nevada: DOE, Office of Civilian Radioactive Waste Management.

NRC. 2005. NUREG-1762, Integrated Issue Resolution Status Report. Rev. 1. ML051360241.

Washington, DC: NRC.

SNL. 2008. Features, Events, and Processes for the Total System Performance Assessment:

Analyses. ANL-WIS-MD-000027. Rev. 00. ACN 01, ERD 01, ERD 02. Las Vegas, Nevada: Sandia National Laboratories.

CONTACT: Bret Leslie, NMSS/HLWRS (301) 492-3196

Enclosure:

NRC Staff Review for Each Feature, Event, and Process Listed in Safety Analysis Report Table 2.2-5 (DOE, 2009)

ADAMS Accession Number:ML102720603 OFFICE HLWRS HLWRS NAME B. Leslie J. Guttmann DATE 09/29/10 12/02/10 OFFICIAL RECORD COPY

2

Enclosure:

NRC Staff Review for Each Feature, Event, and Process Listed in Safety Analysis Report Table 2.2-5 (DOE, 2009).

Tracking No FEP Title ENG1 ENG2 ENG3 ENG4 UZ1 UZ2 UZ3 SZ1 SZ2 Direct1 Direct2 Dose1 Dose 0.1.02.00.0A Timescales of concern 0.1.03.00.0A Spatial domain of concern 0.1.09.00.0A Regulatory requirements and exclusions X

X X

0.1.10.00.0A Model and data issues 1.1.01.01.0A Open-site investigation boreholes X

X 1.1.01.01.0B Influx through holes drilled in drift wall or crown X

X 1.1.02.00.0A Chemical effects of excavation and construction in EBS X

X X

1.1.02.00.0B Mechanical effects of excavation and construction in EBS X

1.1.02.01.0A Site flooding (during construction and operation)

X 1.1.02.02.0A Preclosure ventilation X

X 1.1.02.03.0A Undesirable materials left X

X X

X 1.1.03.01.0A Error in waste emplacement X

X 1.1.03.01.0B Error in backfill emplacement X

1.1.04.01.0A Incomplete closure X

1.1.05.00.0A Records and markers for the repository 1.1.07.00.0A Repository design X

X X

X X

1.1.08.00.0A Inadequate quality control and deviations from design X

X X

1.1.09.00.0A Schedule and planning 1.1.10.00.0A Administrative control of the repository site 1.1.11.00.0A Monitoring of the repository X

X X

X 1.1.12.01.0A Accidents and unplanned events during construction and operation X

X 1.1.13.00.0A Retrievability X

X 1.2.01.01.0A Tectonic activity - large scale 1.2.02.01.0A Fractures X

X X

X Tracking No FEP Title ENG1 ENG2 ENG3 ENG4 UZ1 UZ2 UZ3 SZ1 SZ2 Direct1 Direct2 Dose1 Dose 1.2.02.02.0A Faults X

X X

X 1.2.02.03.0A Fault displacement damages EBS components X

1.2.03.02.0A Seismic ground motion damages EBS components X

1.2.03.02.0B Seismic-induced rockfall damages EBS components X

1.2.03.02.0C Seismic-induced drift collapse damages EBS components X

1.2.03.02.0D Seismic-induced drift collapse alters in-drift thermohydrology X

X X

3 1.2.03.02.0E Seismic-induced drift collapse alters in-drift chemistry X

X X

X 1.2.03.03.0A Seismicity associated with igneous activity X

X 1.2.04.02.0A Igneous activity changes rock properties X

X X

X X

X 1.2.04.03.0A Igneous intrusion into repository X

X X

1.2.04.04.0A Igneous intrusion interacts with EBS components X

X X

X X

1.2.04.04.0B Chemical effects of magma and magmatic volatiles X

X X

X X

1.2.04.05.0A Magma or pyroclastic base surge transports waste X

X 1.2.04.06.0A Eruptive conduit to surface intersects repository X

X X

1.2.04.07.0A Ashfall X

X 1.2.04.07.0B Ash redistribution in groundwater X

X X

X 1.2.04.07.0C Ash redistribution via soil and sediment transport X

X 1.2.05.00.0A Metamorphism X

1.2.06.00.0A Hydrothermal activity X

X X

X 1.2.07.01.0A Erosion/denudation X

X 1.2.07.02.0A Deposition X

X 1.2.08.00.0A Diagenesis X

1.2.09.00.0A Salt diapirism and dissolution Tracking No FEP Title ENG1 ENG2 ENG3 ENG4 UZ1 UZ2 UZ3 SZ1 SZ2 Direct1 Direct2 Dose1 Dose 1.2.09.01.0A Diapirism 1.2.09.02.0A Large-scale dissolution X

X X

X 1.2.10.01.0A Hydrological response to seismic activity X

X X

1.2.10.02.0A Hydrologic response to igneous activity X

X X

1.3.01.00.0A Climate change X

X X

X X

X X

1.3.04.00.0A Periglacial effects X

X 1.3.05.00.00A Glacial and ice sheet effects X

X X

1.3.07.01.0A Water table decline X

X X

X 1.3.07.02.0A Water table rise affects SZ X

X X

1.3.07.02.0B Water table rise affects UZ X

X 1.4.01.00.0A Human influences on climate X

X 1.4.01.01.0A Climate modification increases recharge X

X X

1.4.01.02.0A Greenhouse gas effects X

1.4.01.03.0A Acid rain X

1.4.01.04.0A Ozone layer failure X

1.4.02.01.0A Deliberate human intrusion 1.4.02.02.0A Inadvertent human intrusion 1.4.02.03.0A Igneous event precedes human intrusion X

1.4.02.04.0A Seismic event precedes human intrusion X

1.4.03.00.0A Unintrusive site investigation

4 1.4.04.00.0A Drilling activities (human intrusion) 1.4.04.01.0A Effects of drilling intrusion 1.4.05.00.0A Mining and other underground activities (human intrusion) 1.4.06.01.0A Altered soil or surface water chemistry X

X X

X 1.4.07.01.0A Water management activities X

X X

X 1.4.07.02.0A Wells X

X Tracking No FEP Title ENG1 ENG2 ENG3 ENG4 UZ1 UZ2 UZ3 SZ1 SZ2 Direct1 Direct2 Dose1 Dose 1.4.07.03.0A Recycling of accumulated radionuclides from soils to groundwater X

X X

1.4.08.00.0A Social and institutional developments X

X 1.4.09.00.0A Technological developments X

X 1.4.11.00.0A Explosions and crashes (human activities)

X 1.5.01.01.0A Meteorite impact X

1.5.01.02.0A Extraterrestrial events 1.5.02.00.0A Species evolution 1.5.03.01.0A Changes in the Earth's magnetic field 1.5.03.02.0A Earth tides X

2.1.01.01.0A Waste inventory X

X X

2.1.01.02.0A Interactions between co-located waste X

X X

X 2.1.01.02.0B Interactions between co-disposed waste X

X X

2.1.01.03.0A Heterogeneity of waste inventory X

2.1.01.04.0A Repository-scale spatial heterogeneity of emplaced waste X

X 2.1.02.01.0A Defense spent nuclear fuel degradation (alteration, dissolution, and radionuclide release)

X X

2.1.02.02.0A Commercial spent nuclear fuel degradation (alteration, dissolution, and radionuclide release)

X X

2.1.02.03.0A High-level waste glass degradation (alteration, dissolution, and radionuclide release)

X X

2.1.02.04.0A Alpha recoil enhances dissolution X

2.1.02.05.0A High-level waste glass cracking X

2.1.02.06.0A High-level waste glass recrystallization X

2.1.02.07.0A Radionuclide release from gap and grain boundaries X

Tracking No FEP Title ENG1 ENG2 ENG3 ENG4 UZ1 UZ2 UZ3 SZ1 SZ2 Direct1 Direct2 Dose1 Dose 2.1.02.08.0A Pyrophoricity from defense spent nuclear fuel X

X 2.1.02.09.0A Chemical effects of void space in waste package X

X

5 2.1.02.10.0A Organic/cellulosic materials in waste X

X 2.1.02.11.0A Degradation of cladding from waterlogged rods X

2.1.02.12.0A Degradation of cladding prior to disposal X

2.1.02.13.0A General corrosion of cladding X

2.1.02.14.0A Microbially influenced corrosion (MIC) of cladding X

2.1.02.15.0A Localized (radiolysis enhanced) corrosion of cladding X

2.1.02.16.0A Localized (pitting) corrosion of cladding X

2.1.02.17.0A Localized (crevice) corrosion of cladding X

2.1.02.18.0A Enhanced corrosion of cladding from dissolved silica X

2.1.02.19.0A Creep rupture of cladding X

2.1.02.20.0A Internal pressurization of cladding X

2.1.02.21.0A Stress corrosion cracking (SCC) of cladding X

2.1.02.22.0A Hydride cracking of cladding X

2.1.02.23.0A Cladding unzipping X

2.1.02.24.0A Mechanical impact on cladding X

X 2.1.02.25.0A Defense spent nuclear fuel cladding X

2.1.02.25.0B Naval spent nuclear fuel cladding X

2.1.02.26.0A Diffusion-controlled cavity growth in cladding X

2.1.02.27.0A Localized (fluoride enhanced) corrosion of cladding X

2.1.02.28.0A Grouping of defense spent nuclear fuel waste types into categories X

Tracking No FEP Title ENG1 ENG2 ENG3 ENG4 UZ1 UZ2 UZ3 SZ1 SZ2 Direct1 Direct2 Dose1 Dose 2.1.02.29.0A Flammable gas generation from defense spent nuclear fuel X

2.1.03.01.0A General corrosion of waste packages X

X 2.1.03.01.0B General corrosion of drip shields X

X 2.1.03.02.0A Stress corrosion cracking (SCC) of waste packages X

X X

2.1.03.02.0B Stress corrosion cracking (SCC) of drip shields X

X X

2.1.03.03.0A Localized corrosion of waste packages X

X 2.1.03.03.0B Localized corrosion of drip shields X

X 2.1.03.04.0A Hydride cracking of waste packages X

X 2.1.03.04.0B Hydride cracking of drip shields X

X 2.1.03.05.0A Microbially influenced corrosion (MIC) of waste packages X

X

6 2.1.03.05.0B Microbially influenced corrosion (MIC) of drip shields X

X 2.1.03.06.0A Internal corrosion of waste packages prior to breach X

X X

2.1.03.07.0A Mechanical impact on waste package X

2.1.03.07.0B Mechanical impact on drip shield X

2.1.03.08.0A Early failure of waste packages X

X 2.1.03.08.0B Early failure of drip shields X

X 2.1.03.09.0A Copper corrosion in EBS X

2.1.03.10.0A Advection of liquids and solids through cracks in the waste package X

X X

2.1.03.10.0B Advection of liquids and solids through cracks in the drip shield X

X X

2.1.03.11.0A Physical form of waste package and drip shield X

X X

X 2.1.04.01.0A Flow in backfill X

X 2.1.04.02.0A Chemical properties and evolution of backfill X

X X

Tracking No FEP Title ENG1 ENG2 ENG3 ENG4 UZ1 UZ2 UZ3 SZ1 SZ2 Direct1 Direct2 Dose1 Dose 2.1.04.03.0A Erosion or dissolution of backfill X

X X

2.1.04.04.0A Thermal-mechanical effects of backfill X

X 2.1.04.05.0A Thermal-mechanical properties and evolution of backfill X

X X

2.1.04.09.0A Radionuclide transport in backfill X

X X

2.1.05.01.0A Flow through seals (access ramps and ventilation shafts)

X 2.1.05.02.0A Radionuclide transport through seals X

X X

X 2.1.05.03.0A Degradation of seals X

X 2.1.06.01.0A Chemical effects of rock reinforcement and cementitious materials in EBS X

X X

2.1.06.02.0A Mechanical effects of rock reinforcement materials in EBS X

2.1.06.04.0A Flow through rock reinforcement materials in EBS X

X X

2.1.06.05.0A Mechanical degradation of emplacement pallet X

X 2.1.06.05.0B Mechanical degradation of invert X

X X

2.1.06.05.0C Chemical degradation of emplacement pallet X

X X

2.1.06.05.0D Chemical degradation of invert X

X X

X 2.1.06.06.0A Effects of drip shield on flow X

X X

X 2.1.06.06.0B Oxygen embrittlement of drip shields X

X X

2.1.06.07.0A Chemical effects at EBS component interfaces X

X X

2.1.06.07.0B Mechanical effects at EBS component interfaces X

X X

2.1.07.01.0A Rockfall X

7 2.1.07.02.0A Drift collapse X

X X

2.1.07.04.0A Hydrostatic pressure on waste package X

X x

2.1.07.04.0B Hydrostatic pressure on drip shield X

X x

Tracking No FEP Title ENG1 ENG2 ENG3 ENG4 UZ1 UZ2 UZ3 SZ1 SZ2 Direct1 Direct2 Dose1 Dose 2.1.07.05.0A Creep of metallic materials in the waste package X

2.1.07.05.0B Creep of metallic materials in the drip shield X

2.1.07.06.0A Floor buckling X

X 2.1.08.01.0A Water influx at the repository X

2.1.08.01.0B Effects of rapid influx into the repository X

X 2.1.08.02.0A Enhanced influx at the repository X

2.1.08.03.0A Repository dryout due to waste heat X

2.1.08.04.0A Condensation forms on roofs of drift (drift-scale cold traps)

X X

2.1.08.04.0B Condensation forms at repository edges (repository-scale cold traps)

X X

2.1.08.05.0A Flow through invert X

X 2.1.08.06.0A Capillary effects (wicking) in EBS X

X X

2.1.08.07.0A Unsaturated flow in the EBS X

X X

2.1.08.09.0A Saturated flow in the EBS X

X X

2.1.08.11.0A Repository resaturation due to waste cooling X

X 2.1.08.12.0A Induced hydrologic changes in invert X

X X

2.1.08.14.0A Condensation on underside of drip shield X

X 2.1.08.15.0A Consolidation of EBS components X

X X

X X

2.1.09.01.0A Chemical characteristics of water in drifts X

X X

2.1.09.01.0B Chemical characteristics of water in waste package X

X 2.1.09.02.0A Chemical interaction with corrosion products X

X 2.1.09.03.0A Volume increase of corrosion products impacts cladding X

X 2.1.09.03.0B Volume increase of corrosion products impacts waste package X

X X

Tracking No FEP Title ENG1 ENG2 ENG3 ENG4 UZ1 UZ2 UZ3 SZ1 SZ2 Direct1 Direct2 Dose1 Dose 2.1.09.03.0C Volume increase of corrosion products impacts other EBS components X

X X

X 2.1.09.04.0A Radionuclide solubility, solubility limits, and speciation in the waste form and EBS X

2.1.09.05.0A Sorption of dissolved radionuclides in the EBS X

2.1.09.06.0A Reduction-oxidation potential in waste package X

X X

8 2.1.09.06.0B Reduction-oxidation potential in drifts X

X X

2.1.09.07.0A Reaction kinetics in waste package X

X X

2.1.09.07.0B Reaction kinetics in drifts X

X X

2.1.09.08.0A Diffusion of dissolved radionuclides in EBS X

2.1.09.08.0B Advection of dissolved radionuclides in EBS X

2.1.09.09.0A Electrochemical effects in EBS X

X 2.1.09.10.0A Secondary phase effects on dissolved radionuclide concentrations X

2.1.09.11.0A Chemical effects of waste-rock contact X

X 2.1.09.12.0A Rind (chemically altered zone) forms in near field X

X X

X X

2.1.09.13.0A Complexation in EBS X

X 2.1.09.15.0A Formation of true (intrinsic) colloids in EBS X

X 2.1.09.16.0A Formation of pseudo-colloids (natural) in EBS X

X 2.1.09.17.0A Formation of pseudo-colloids (corrosion products) in EBS X

X X

2.1.09.18.0A Formation of microbial colloid in EBS X

X 2.1.09.19.0A Sorption of colloids in EBS X

X 2.1.09.19.0B Advection of colloids in EBS X

2.1.09.20.0A Filtration of colloids in EBS X

Tracking No FEP Title ENG1 ENG2 ENG3 ENG4 UZ1 UZ2 UZ3 SZ1 SZ2 Direct1 Direct2 Dose1 Dose 2.1.09.21.0A Transport of particles larger than colloids in EBS X

X 2.1.09.21.0B Transport of particles larger than colloids in SZ X

X 2.1.09.21.0C Transport of particles larger than colloids in UZ X

X 2.1.09.22.0A Colloid sorption at the air-water interface X

X X

2.1.09.23.0A Stability of colloids in EBS X

X 2.1.09.24.0A Diffusion of colloids in EBS X

2.1.09.25.0A Formation of colloids (waste-form) by coprecipitation in EBS X

X 2.1.09.26.0A Gravitational settling of colloids in EBS X

2.1.09.27.0A Coupled effects on radionuclide transport in EBS X

X X

X X

2.1.09.28.0A Localized corrosion on waste package outer surface due to deliquescence X

X 2.1.09.28.0B Localized corrosion on drip shield surfaces due to deliquescence X

X 2.1.10.01.0A Microbial activity in EBS X

X X

2.1.11.01.0A Heat generation in EBS X

X X

X X

2.1.11.02.0A Non-uniform heat distribution in EBS X

X X

X X

9 2.1.11.03.0A Exothermic reactions in EBS X

X X

2.1.11.05.0A Thermal expansion/stress of in-package EBS components X

X X

2.1.11.06.0A Thermal sensitization of waste packages X

X 2.1.11.06.0B Thermal sensitization of drip shields X

X 2.1.11.07.0A Thermal expansion/stress of in-drift EBS components X

X X

2.1.11.08.0A Thermal effects on chemistry and microbial activity in the EBS X

2.1.11.09.0A Thermal effects on flow in the EBS X

X Tracking No FEP Title ENG1 ENG2 ENG3 ENG4 UZ1 UZ2 UZ3 SZ1 SZ2 Direct1 Direct2 Dose1 Dose 2.1.11.09.0B Thermally-driven flow (convection) in waste packages X

X X

2.1.11.09.0C Thermally-driven flow (convection) in drifts X

X 2.1.11.10.0A Thermal effects on transport in EBS X

2.1.12.01.0A Gas generation (repository pressurization)

X X

X 2.1.12.02.0A Gas generation (He) from waste form decay X

X 2.1.12.03.0A Gas generation (H2) from waste package corrosion X

X 2.1.12.04.0A Gas generation (CO2, CH4, H2S) from microbial degradation X

X X

2.1.12.06.0A Gas transport in EBS X

X X

2.1.12.07.0A Effects of radioactive gases in EBS X

2.1.12.08.0A Gas explosions in EBS X

X X

2.1.13.01.0A Radiolysis X

X X

2.1.13.02.0A Radiation damage in EBS X

X X

X 2.1.13.03.0A Radiological mutation of microbes X

X X

2.1.14.15.0A In-package criticality (intact configuration)

X 2.1.14.16.0A In-package criticality (degraded configurations)

X 2.1.14.17.0A Near-field criticality X

2.1.14.18.0A In-package criticality resulting from a seismic event (intact configuration)

X X

2.1.14.19.0A In-package criticality resulting from a seismic event (degraded configurations)

X X

2.1.14.20.0A Near-field criticality resulting from a seismic event X

X 2.1.14.21.0A In-package criticality resulting from rockfall (intact configuration)

X X

2.1.14.22.0A In-package criticality resulting from rockfall (degraded configurations)

X X

Tracking No FEP Title ENG1 ENG2 ENG3 ENG4 UZ1 UZ2 UZ3 SZ1 SZ2 Direct1 Direct2 Dose1 Dose

10 2.1.14.23.0A Near-field criticality resulting from rockfall X

X 2.1.14.24.0A In-package criticality resulting from an igneous event (intact configuration)

X X

2.1.14.25.0A In-package criticality resulting from an igneous event (degraded configurations)

X X

2.1.14.26.0A Near-field criticality resulting from an igneous event X

X 2.2.01.01.0A Mechanical effects of excavation and construction in the near field X

X 2.2.01.01.0B Chemical effects of excavation and construction in the near field X

X X

2.2.01.02.0A Thermally-induced stress changes in the near-field X

X X

2.2.01.02.0B Chemical changes in the near field from backfill X

X X

X 2.2.01.03.0A Changes in fluid saturations in the excavation disturbed zone X

X X

2.2.01.04.0A Radionuclide solubility in excavation disturbed zone X

X 2.2.01.05.0A Radionuclide transport in the excavation disturbed zone X

X 2.2.03.01.0A Stratigraphy X

X X

X X

2.2.03.02.0A Rock properties of host rock and other units X

X X

X X

X 2.2.06.01.0A Seismic activity changes porosity and permeability of rock X

X X

X 2.2.06.02.0A Seismic activity changes porosity and permeability of faults X

X X

2.2.06.02.0B Seismic activity changes porosity and permeability of fractures X

X X

X 2.2.06.03.0A Seismic activity alters perched water zones X

X 2.2.06.04.0A Effects of subsidence X

X Tracking No FEP Title ENG1 ENG2 ENG3 ENG4 UZ1 UZ2 UZ3 SZ1 SZ2 Direct1 Direct2 Dose1 Dose 2.2.06.05.0A Salt creep 2.2.07.01.0A Locally saturated flow at bedrock/alluvium contact X

2.2.07.02.0A Unsaturated groundwater flow in geosphere X

X 2.2.07.03.0A Capillary rise in the UZ X

2.2.07.04.0A Focusing of unsaturated flow (fingers, weeps)

X X

X 2.2.07.05.0A Flow in the UZ from episodic infiltration X

X 2.2.07.06.0A Episodic or pulse release from repository X

X X

2.2.07.06.0B Long-term release of radionuclides from the repository X

X X

X 2.2.07.07.0A Perched water develops X

X

11 2.2.07.08.0A Fracture flow in the UZ X

X 2.2.07.09.0A Matrix imbibition in the UZ X

X 2.2.07.10.0A Condensation zone forms around drifts X

X 2.2.07.11.0A Resaturation of geosphere dryout zone X

X 2.2.07.12.0A Saturated ground water flow in the geosphere X

X X

2.2.07.13.0A Water-conducting features in the SZ X

X X

2.2.07.14.0A Chemically-induced density effects on ground water flow X

X X

2.2.07.15.0A Advection and dispersion in the SZ X

X X

2.2.07.15.0B Advection and dispersion in the UZ X

X 2.2.07.16.0A Dilution of radionuclides in ground water X

X X

2.2.07.17.0A Diffusion in the SZ X

X 2.2.07.18.0A Film flow into the repository X

X 2.2.07.19.0A Lateral flow from Solitario Canyon fault enters drifts X

2.2.07.20.0A Flow diversion around repository drifts X

2.2.07.21.0A Drift shadow forms below repository X

X Tracking No FEP Title ENG1 ENG2 ENG3 ENG4 UZ1 UZ2 UZ3 SZ1 SZ2 Direct1 Direct2 Dose1 Dose 2.2.08.01.0A Chemical characteristics of groundwater in SZ X

X X

X 2.2.08.01.0B Chemical characteristics of groundwater in UZ X

X X

2.2.08.03.0A Geochemical interactions and evolution in the SZ X

X 2.2.08.03.0B Geochemical interactions and evolution in the UZ X

X 2.2.08.04.0A Re-dissolution of precipitates directs more corrosive fluids to waste packages X

X 2.2.08.05.0A Diffusion in the UZ X

2.2.08.06.0A Complexation in the SZ X

X 2.2.08.06.0B Complexation in the UZ X

X 2.2.08.07.0A Radionuclide solubility limits in the SZ X

X 2.2.08.07.0B Radionuclide solubility limits in the UZ X

X 2.2.08.07.0C Radionuclide solubility limits in the biosphere 2.2.08.08.0A Matrix diffusion in the SZ X

X 2.2.08.08.0B Matrix diffusion in the UZ X

X 2.2.08.09.0A Sorption in the SZ X

2.2.08.09.0B Sorption in the UZ X

2.2.08.10.0A Colloidal transport in the SZ X

X 2.2.08.10.0B Colloidal transport in the UZ X

X 2.2.08.11.0A Groundwater discharge to surface with the reference biosphere X

X X

X

12 2.2.08.12.0A Chemistry of water flowing into the drift X

2.2.08.12.0B Chemistry of water flowing into the waste package X

X X

2.2.09.01.0A Microbial activity in the SZ X

X 2.2.09.01.0B Microbial activity in the UZ X

X 2.2.10.01.0A Repository-induced thermal effects on flow in the UZ X

X X

X Tracking No FEP Title ENG1 ENG2 ENG3 ENG4 UZ1 UZ2 UZ3 SZ1 SZ2 Direct1 Direct2 Dose1 Dose 2.2.10.02.0A Thermal convection cell develops in SZ X

X X

2.2.10.03.0A Natural geothermal effects on flow in the SZ X

X 2.2.10.03.0B Natural geothermal effects on flow in the UZ X

2.2.10.04.0A Thermo-mechanical stresses alter characteristics of fractures near repository X

X X

2.2.10.04.0B Thermo-mechanical stresses alter characteristics of faults near repository X

X X

X 2.2.10.05.0A Thermo-mechanical stresses alter characteristics of rocks above and below the repository X

X X

X 2.2.10.06.0A Thermo-chemical alteration in the UZ (solubility, speciation, phase changes, precipitation/dissolution)

X X

2.2.10.07.0A Thermo-chemical alteration of the Calico Hills unit X

X 2.2.10.08.0A Thermo-chemical alteration in the SZ (solubility, speciation, phase changes, precipitation/dissolution)

X X

2.2.10.09.0A Thermo-chemical alteration of the Topopah Spring basal vitrophyre X

X 2.2.10.10.0A Two-phase bouyant flow/heat pipes X

2.2.10.11.0A Natural air flow in UZ X

X 2.2.10.12.0A Geosphere dry-out due to waste heat X

X 2.2.10.13.0A Repository-induced thermal effects on flow in the SZ X

X 2.2.10.14.0A Mineralogic dehydration reactions X

X X

2.2.11.01.0A Gas effects in the SZ X

X X

2.2.11.02.0A Gas effects in the UZ X

X X

2.2.11.03.0A Gas transport in geosphere X

X X

X Tracking No FEP Title ENG1 ENG2 ENG3 ENG4 UZ1 UZ2 UZ3 SZ1 SZ2 Direct1 Direct2 Dose1 Dose 2.2.12.00.0A Undetected features in the UZ X

X X

2.2.12.00.0B Undetected features in the SZ X

X X

2.2.14.09.0A Far-field criticality X

X 2.2.14.10.0A Far-field criticality resulting from a seismic event X

X X

13 2.2.14.11.0A Far-field criticality resulting from rockfall X

2.2.14.12.0A Far-field criticality resulting from an igneous event X

X X

2.3.01.00.0A Topography and morphology X

X X

2.3.02.01.0A Soil type X

2.3.02.02.0A Radionuclide accumulation in soils X

X X

2.3.02.03.0A Soil and sediment transport in the biosphere X

2.3.04.01.0A Surface water transport and mixing X

2.3.06.00.0A Marine features X

2.3.09.01.0A Animal burrowing/intrusion 2.3.11.01.0A Precipitation X

X 2.3.11.02.0A Surface runoff and flooding X

X 2.3.11.03.0A Infiltration and recharge X

X 2.3.11.04.0A Ground water discharge to surface outside the reference biosphere X

X X

2.3.13.01.0A Biosphere characteristics X

X 2.3.13.02.0A Radionuclide alteration during biosphere transport 2.3.13.03.0A Effects of repository heat on biosphere X

X 2.3.13.04.0A Radionuclde release outside the reference biosphere X

X 2.4.01.00.0A Human characteristics (physiology, metabolism) 2.4.04.01.0A Human lifestyle X

X 2.4.07.00.0A Dwellings 2.4.08.00.0A Wild and natural land and water use X

X Tracking No FEP Title ENG1 ENG2 ENG3 ENG4 UZ1 UZ2 UZ3 SZ1 SZ2 Direct1 Direct2 Dose1 Dose 2.4.09.01.0A Implementation of new agricultural practices or land use X

X 2.4.09.01.0B Agricultural land use and irrigation X

X 2.4.09.02.0A Animal farms and fisheries X

X 2.4.10.00.0A Urban and industrial land and water use X

X 3.1.01.01.0A Radioactive decay and ingrowth X

X X

X X

3.2.07.01.0A Isotopic dilution X

X X

3.2.10.00.0A Atmospheric transport of contaminants X

X 3.3.01.00.0A Contaminated drinking water, foodstuffs and drugs 3.3.02.01.0A Plant uptake 3.3.02.02.0A Animal uptake 3.3.02.03.0A Fish uptake 3.3.03.01.0A Contaminated non-food products and exposure 3.3.04.01.0A Ingestion 3.3.04.02.0A Inhalation 3.3.04.03.0A External exposure

14 3.3.05.01.0A Radiation doses 3.3.06.00.0A Radiological toxicity and effects 3.3.06.01.0A Repository excavation 3.3.06.02.0A Sensitization to radiation 3.3.07.00.0A Non-radiological toxicity and effects 3.3.08.00.0A Radon and radon daughter exposure

Reference:

DOE. 2009. DOE/RW-0573, Yucca Mountain Repository License Application.

Rev. 1. ML090700817. Las Vegas, Nevada: DOE, Office of Civilian Radioactive Waste Management.