SRS IMCC Section C DRFP 2-12-20.pdf

Savannah River Site Integrated Mission Completion – Draft End State RFP Section C

Solicitation No. 89303319REM000055

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Part I – The Schedule

Section C

Performance Work Statement

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Contents

C.1 Contract Transition

C.2 Liquid Waste Stabilization/Disposition

C.2.1 Liquid Waste Operations

C.2.1.1 Tank Farms

C.2.1.1.1 Actinide Removal Process/Modular Caustic Side Solvent Extraction Unit (ARP/MCU)

C.2.1.1.2 Tank Farm Operations

C.2.1.1.2.1 Tank Space Management

C.2.1.1.2.2 Salt Feed Preparation

C.2.1.1.2.3 Sludge Feed Preparation

C.2.1.1.2.4 Bulk Waste Retrieval/Removal

C.2.1.1.2.5 Effluent Treatment Facility (ETF)

C.2.1.2 Waste Vitrification

C.2.1.2.1 Defense Waste Processing Facility

C.2.1.2.2 Glass Waste Storage Buildings (GWSB)

C.2.1.3 Low Activity Waste Disposal

C.2.1.3.1 Saltstone Production Facility (SPF)

C.2.1.3.2 Saltstone Disposal Facility (SDF)

C.2.1.4 Salt Waste Processing Facility (SWPF)

C.2.2 Liquid Waste Operations Support

C.2.2.1 Saltstone Disposal Unit Construction

C.2.2.2 Salt Waste Processing Facility Transition

C.2.2.3 Tank Closures

C.2.2.3.1 Tank Heel Removal and Residual Sampling

C.2.2.3.2 Tank Isolation

C.2.2.3.3 Tank Grouting

C.2.2.4 Safety Basis Upgrade

C.2.2.5 System Optimization

C.2.2.5.1 Next Generation Solvent (NGS) Deployment

C.2.2.5.2 At-Tank Cesium Removal

C.2.2.5.3 Melter Fabrication

C.2.2.5.4 DWPF Operational Improvements

C.2.2.5.5 Tank 48 Recovery

C.2.2.5.6 Technology Development and Deployment

C.2.2.6 Additional Glass Waste Storage Capability

C.3 Nuclear Materials Stabilization and Disposition and Non-Operating Nuclear Facilities (Surveillance, Maintenance, and Deactivation)

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C.4 Maintenance Mockup Facility (Bldg. 717-F)

C.5 Core Functions: Program Support/Services

C.5.1 Project Support Performance Requirements

C.5.1.1 Program and Project Management

C.5.1.2 Earned Value Management System (EVMS)

C.5.1.3 Contract Performance Baseline (CPB)

C.5.1.4 Contract Performance Baseline Submittals

C.5.2 Program and Project Performance Reporting

C.5.2.1 Monthly Performance Report

C.5.2.2 Project Review Meetings

C.5.3 Cost Estimating

C.5.4 Scheduling

C.5.5 Risk Management

C.6 Environment, Safety, Health, & Quality

C.6.1 Worker Safety and Health

C.6.1.1 Workplace Substance Abuse Programs

C.6.1.2 Safety Culture

C.6.2 Integrated Safety Management System (ISMS)

C.6.3 Radiation Protection

C.6.4 Radiological Assistance Program (RAP)

C.6.5 Quality Assurance (QA)

C.6.6 Procedure Management

C.6.7 Training

C.6.8 Environmental Regulatory Management

C.6.8.1 Environmental Compliance Activities

C.6.8.2 Environmental Compliance Activities

C.6.9 Conduct of Operations (CONOPS)

C.6.10 Nuclear Safety

C.6.11 Conduct of Engineering

C.6.12 Conduct of Maintenance

C.6.12.1 Real Property Maintenance

C.6.12.2 Nuclear Facility Maintenance

C.6.13 Fire Protection Program

C.7 Personal Property Management

C.7.1 Personal Property Management Program

C.7.2 Disposition of Excess Personal Property

C.7.3 Inventory Management

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C.7.4 Real Property Asset Management

C.7.5 Facilities Information Management System (Reporting Systems)

C.7.6 General Purpose Facility Planning and Management

C.7.7 Land-Use Planning and Management

C.8 Information Management

C.8.1 Information Technology (IT) Management

C.8.2 Government-Furnished and Other Available Software

C.8.3 Government-Furnished Services and Information

C.9 Records

C.9.1 Electronic Records Management System

C.9.2 Other Information Management J-3 Services

C.10 Contractor Assurance System

C.10.1 Requirements Management Program

C.11 Safeguards, Security and Emergency Services

C.11.1 Safeguards and Security (S&S) Program

C.11.2 Emergency Management Program

C.11.3 CYBER Security

C.12 External Affairs

C.12.1 External Review and Support

C.13 Savannah River Site Interface Management

C.14 Business Performance Requirements

C.14.1 Business Administration

C.14.2 Internal Audit

C.14.3 Employee Concerns Program

C.14.4 Outgoing Contract Transition

C.15 Usage-Based Services to Be Provided to Other Site Contractors

Attachment 1 – Liquid Waste Process Diagram

Attachment 2 – Liquid Waste Facilities

Attachment 3 – SRS Tank Closure Regulatory Roadmap

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SRS Integrated Mission Completion Cleanup Contract Overview and Objectives

Background

The U.S. Department of Energy (DOE) Savannah River Site (SRS also referred to herein as “Site”) is located in western South Carolina, covering 310 square miles in Aiken, Allendale and Barnwell counties. SRS was constructed during the early 1950s to produce basic materials used in fabrication of nuclear weapons, primarily tritium and plutonium-239, in support of our nation's defense programs.

The SRS cleanup strategy is to eliminate or minimize nuclear materials, spent nuclear fuel (SNF), and waste through safe stabilization, treatment, and/or disposition; reduce costs of continuing operations and surveillance and maintenance; remediate surface water, groundwater and contaminated soils consistent with regulatory agreements and permits; and, perform deactivation and decommissioning (D&D) of excessed facilities. The Department's completion strategy provides a comprehensive risk-based methodology to the legacy cleanup project, such as dispositioning radioactive liquid waste (LW) through vitrification of high activity waste constituents at the Site's Defense Waste Processing Facility (DWPF), and using existing SRS facilities to receive, store, and disposition aluminum-clad SNF.

Contract Purpose and Objectives

(a) One of the U.S. DOE strategic goals is to meet the challenges of cleaning up the nation’s

Manhattan Project and Cold War legacy. To accomplish this goal, the Office of Environmental

Management (EM) must reduce environmental liabilities through accelerated cleanup of high-risk areas resulting in risk reduction. This goal must be accomplished in a manner that is protective of human health and the environment.

(b) The purpose of the SRS Integrated Mission Completion (IMC) Contract is to achieve significant risk and financial liability reduction that provides the best overall optimal solution to Site accelerated completion and closure. Ultimately, the tasks, including the End States associated with the tasks, to be performed during the Contract ordering period will be defined in future Task Orders. The term “End State” is defined as the specified situation, including accomplishment of completion criteria, for an environmental cleanup activity at the end of the

Task Order period of performance (POP).

(c) The Contractor is responsible for the performance of the entire scope under the Contract including defining the specific methods, innovations, regulatory approach, and graded approaches for accomplishing all work to be performed and managing, integrating, and executing work described in this Performance Work Statement (PWS).

(d) The DOE’s goal is to efficiently optimize the scope, cost, and schedule associated with performance of all work while ensuring quality, protecting the safety of the workers, environment, and the public, to reduce EM’s environmental liabilities.

(e) The Contractor shall comply with Section 3116 of the Ronald W. Reagan National Defense

Authorization Act (NDAA) for Fiscal Year 2005; the Federal Facility Agreement for the

Savannah River Site (FFA); permits and requirements issued by the South Carolina

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Department of Health and Environmental Control (SCDHEC); and any other applicable regulatory requirements and federal regulations.

(f) The FFA is an enforceable agreement among DOE, SCDHEC, and U.S. Environment

Protection Agency (EPA). It directs the comprehensive remediation of the SRS. The

Contractor is not a signatory to the FFA but will support DOE in its role as the lead agency for site remediation under Comprehensive Environmental Response, Compensation, and Liability

Act (CERCLA) and will support decision making by the three parties to the FFA. The

Contractor’s work products and processes will meet the requirements of the FFA when performing scope pursuant to the FFA. The Contractor is encouraged to propose cost-effective methods, strategies, and processes for consideration by DOE.

(g) The Contractor shall prepare and submit all regulatory and supporting documentation to DOE prior to submittal to the regulatory agencies. In addition, DOE will:

(1) Operate as the owner in coordination with the regulators to reach agreement on

Contractor-prepared regulatory and supporting documentation;

(2) Review, approve, and/or certify, as required, all regulatory and supporting documentation; and

(3) Prepare any additional National Environmental Policy Act (NEPA) analyses and/or documentation that may be required.

(h) The Contractor shall ensure that its technical approach and execution of the work comply with all current applicable laws, regulations, and DOE directives as identified in Section J, Attachment J-2, Requirements Sources and Implementing Documents. The list of laws and regulations is not comprehensive. Omission of any applicable law or regulation from

Attachment J-2 does not affect the obligation of the Contractor to comply with such law or regulation.

(i) The Government shall conduct audits and surveillances of all aspects of the terms of this

Contract to ensure compliance with the terms of this PWS. The results of all audits and surveillances will be resolved with the Contractor. DOE reserves the right to stop work in accordance with the Section H Clause DOE-H-2021, Work Stoppage and Shutdown

Authorization (Oct 2014)(Revised).

(j) DOE plans to provide a steady, predictable funding stream to enable End State completion;

however, funding is subject to the ordinary limitations associated with the congressional appropriation process.

(k) Accelerated cleanup (i.e., accomplishing cleanup faster and more efficiently than planned) is a cooperative undertaking that requires the Contractor and the Government to seek innovative approaches to achieve the desired End States. This approach will require DOE and the

Contractor to cooperate in creating an organizational culture to facilitate change and a mutual understanding of the technical approach and strategy that will lead to successful achievement of End States to be completed under this Contract. Streamlining the process, challenging requirements, and identifying efficiencies and performance improvements are critical to

C-7 accomplishing accelerated cleanup. The Contractor, in partnership with DOE and throughout the Contract ordering period, shall seek to identify requirements and processes that impede progress and recommend efficiencies and performance improvements that reduce the actual cost and/or improve the schedule for the work.

(l) The Contractor, in partnership with DOE, will use its best efforts to further the acceleration of cleanup activities and reduce DOE’s long-term liability (see Section H Clause entitled, Partnering).

(m) Manage, integrate, and execute the work described in this PWS, as authorized through Task

Orders. The Contractor shall provide all personnel, facilities, equipment, materials, services, and supplies required to complete the Contract work scope, except for the items described in

Section J, Attachment J-8, Government Furnished Services and Information (GFS/I).

(n) Integrate and manage all capital and non-capital asset acquisition projects, activities, and subprojects as described in this PWS. The Contractor shall maximize efficient and cost-effective methods for completing the work scope. The Contractor will be the single point of accountability for the SRS IMC Contract activities, safety and quality assurance programs, regulatory and SRS interface, and project management in the performance of this Contract, including any subcontracts.

(o) Support transfer and/or accept operational responsibility for these facilities to support execution of the work. Some of the facilities included in this SRS IMC Contract scope may currently be the responsibility of DOE program offices other than EM and/or other contractors.

Likewise, certain facilities currently included in the contract scope may be transferred to other

DOE Program Offices. The Contractor shall develop interface documents with DOE management and other Site contractors, as needed, to support transition, stipulate respective roles and responsibilities, and define services to be provided by other DOE contractors.

(p) Comply with all applicable laws, regulations, permits, and DOE Directives (including invoked

Technical Standards) identified in Section J, Attachment J-2, Requirements Sources and

Implementing Documents. During the conduct of authorized work scope, the Contractor shall also comply with all CERCLA decision documents in effect for the SRS.

(q) Support achieving the goals described in the DOE Office of Environmental Management

Annual Performance Agreement in effect during the period of performance. The Contractor shall comply with Site-Wide programs and procedures (e.g., Lockout/Tagout Program, Radiation Protection Program, etc.)

Supplemental Information

The various elements of this Performance Work Statement (PWS) have descriptive statements of

DOE’s supplemental information associated with the performance of each element. Such statements are intended to provide the Contractor with insight regarding DOE’s historical operational performance/planning perspective on the objectives that need to be accomplished in order to progress toward completion of the Savannah River Site cleanup. The Contractor is not bound by such historical operational performance (e.g., waste processing rates, ratios, and limits) and is expected to seek to improve upon such historical operational performance while, at the same

C-8 time, ensuring compliance with all applicable requirements. The Government makes no representations that the historical operational performance is what the Contractor will, in fact, experience in the execution of this contract.

C.1 Contract Transition

The desired outcome is a smooth transition of full responsibility for execution of the Contract that maintains continuity of operations and avoids or minimizes disruptions to ongoing operations and/or accomplishment of the DOE mission.

As authorized by Task Order(s), the Contractor shall perform the activities necessary to transition work from the current SRS Liquid Waste contract, transition any subcontract work from the incumbent Liquid Waste Contractor as deemed necessary, and complete workforce transition in accordance with the requirements of Section H of this Contract. Nuclear Materials mission activities may be transitioned via post-award task orders and are not part of this initial contract transition.

The Contractor shall submit a Transition Plan for DOE approval within 15 days after notice to proceed that provides a description of all necessary transition activities, a list of the organizations involved, and a transition schedule, including key milestones. The Contractor is responsible for performing due diligence to ensure that all transition activities are identified and completed during the transition period (see Section L, Attachment L-9, Task Order 1: Transition-Liquid Waste).

The list below includes the major elements necessary for transition of the Contract, but is not a comprehensive list of all transition requirements. The following items shall be addressed in the

Transition Plan:

(a) Public Release Statement: Within 72 hours following a Notice to Proceed (NTP), the

Contractor shall release on its own website a brief Executive Summary of its offer including the following elements:

(1) Name of Contractor including the identification of teaming partners and subcontractors and a description of the experience that each party brings to the project.

(2) Organizational Structure and Identification of Key Personnel.

(3) Brief overview of Contractor’s work on similar projects.

(4) Commitments to the Community.

(5) Commitments to Small Business Subcontracting (if applicable).

(b) Implementation of Human Resources Management Requirements: The

Contractor’s Transition Plan required above shall include a description of the

Contractor’s implementation of human resource management consistent with Workforce

Transition and Contractor Human Resources Management requirements as described in

Section H, Clauses H.3 through H.7.

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(c) Inter-Contractor Ordering and Financial Agreements: The Contractor shall develop the inter-contractor ordering and financial agreements necessary to support transition and Contract performance, and will be responsible for the costs incurred under these agreements.

(d) Status Reports – Transition Activities: The Contractor shall provide weekly status reports of transition activities to DOE. The Contractor shall establish routine status meetings with DOE and affected contractors to review transition activities and issues

(see Section L, Attachment L-9, Task Order 1, Liquid Waste Transition, and Section J, Attachment J-7, Contract Deliverables).

(e) Government-Owned Property: All real and personal property currently accountable to the incumbent Liquid Waste Contractor for contract performance will be provided to the

Contractor. During the contract transition period, an inventory record of such property in the DOE Facilities Information Management System (FIMS) and the incumbent

Liquid Waste Contractor’s personal property databases will be provided to the

Contractor. Specifically, the following property acceptance requirements will be implemented:

(1) The Contractor shall perform a joint comprehensive physical inventory with the incumbent Liquid Waste Contractor of all accountable high-risk and sensitive property, as defined in the Code of Federal Regulations (CFR) Title 41 Chapter

109, during the transition period, and shall accept full accountability for the high-risk and sensitive property at the end of transition.

(2) The Contractor shall accept, at the end of transition, transfer of accountability for the remaining government-owned real and personal property not covered under paragraph (1), based on existing inventory records on an “as-is, where-is” basis, or perform a wall-to-wall inventory within the transition period of the

Contract. Any discrepancies with the existing be reported to the Contracting

Officer (CO). At the end of transition, the Contractor shall assume responsibility and liability for subsequent losses and damages. If the physical inventory is not accomplished within the allotted time frame, the previous contractor's records will become the inventory baseline.

(f) DOE Safeguards and Security (SAS) Survey: During the Contract transition period and prior to assuming control and responsibility for SAS responsibilities, the Contractor shall be subject to a DOE SAS initial survey conducted in accordance with DOE Order

470.4B, Safeguards and Security Program. The results of the survey shall be documented and shall form the basis for DOE authorization to assume SAS responsibilities, in particular responsibility for special nuclear material. Following a satisfactory survey, the Contractor shall assume responsibility for all applicable SAS resources, materials, facilities, documents, and equipment.

(g) Identification of Material Differences: During the transition period, the Contractor shall identify any material differences between the systems, facilities, waste sites, property, and services described in this PWS and actual conditions. The Contractor shall prepare and submit a Statement of Material Differences (see Section L, Attachment

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L-9, Task Order 1, Liquid Waste Transition). If the CO determines the Statement of

Material Differences requires revisions to the Contract, the CO may issue a change order to reconcile the material differences with the Contract.

(h) Legal Management Transition: During the transition period, the Contractor shall ensure all legal management activities are addressed pursuant to the Section H clause, Legal Management, and 10 CFR Part 719.

(i) Communication of Contractor’s Approach: The Contractor shall communicate its approach and commitments for accomplishing the scope of the Contract to workers, federal staff, stakeholders, and other interested entities during the transition period.

(j) Graded Approach: The contractor may submit a Graded Approach for Implementation of Contract Requirements Plan for DOE approval to streamline processes, apply a graded approach, and identify efficiencies and performance improvements (e.g., DOE directives, regulations, and others) that are critical to accomplishing the Site mission.

The plan shall include a review and recommendations of changes to the current Site standards and implementing procedures for the elimination of requirements and/or streamline of processes. The Contractor shall interface with the other site contractors on proposed changes, as necessary.

(k) Adoption of Programs and Procedures: To ensure continuity of operations, the

Contractor shall adopt, as applicable, the incumbent contractors’ programs and procedures at NTP (e.g. Documented Safety Analysis (DSA), Technical Safety

Requirement (TSR)s, operating procedures, etc.), provided the Contractor has formally reviewed the programs and procedures to ensure compliance with Contract requirements, current regulatory requirements, DOE Orders and directives, and the

Contractors’ organizational roles and responsibilities. The Contractor shall revise those programs and procedures it deems necessary provided the programs and procedures remain in compliance with DOE requirements, and shall maintain its plans, procedures, programs, etc. in accordance with this PWS.

(l) Task Order (TO) Proposals: During transition, the Contractor shall expediently provide the CO with TO proposals that are compliant with FAR Subpart 15.4. The CO will provide direction as applicable regarding these potential TOs and will establish time frames for submission of additional TO proposals.

(m) Declaration of Readiness: Submit a Declaration of Readiness to Execute the Contract to the CO, prior to the end of transition, indicating readiness to assume responsibility for execution of the Contract. Also, identify any post-transition activities that may be required to complete transition (e.g., notifications to outside agencies of transfer of co-operator responsibilities, completion of procedure updates).

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C.2 Liquid Waste Stabilization/Disposition

C.2.1 Liquid Waste Operations

The mission of LW Operations is to receive, store, treat, and dispose of radioactive liquid waste.

The LW Operations are highly integrated involving safely storing liquid radioactive waste in underground storage tanks; removing, treating, and dispositioning the low activity waste fraction as a saltstone waste form in concrete SDUs; vitrifying the higher activity waste at DWPF; storing the vitrified waste in stainless steel canisters until permanent disposition; and completing operational closure of all underground storage tanks and ancillary equipment.

The goal of the U.S. Department of Energy is to complete the LW cleanup mission at SRS in 15 years. The Contractor shall plan the work scope in this contract period of performance conducive to the achievement of this goal.

The Contractor shall maintain compliance with Site-wide manuals governing operations and maintenance requirements. These activities include routine operations, predictive, preventive and corrective maintenance, and infrastructure activities needed to support LW facilities and any facility improvements including general plant projects, major modifications, temporary modifications, and line item projects needed to sustain facility operations. Facilities shall be operated and maintained in a condition to ensure operability as designed beyond the end of the contract period of performance.

The Contractor shall maintain a comprehensive Master Infrastructure List of critical facility and infrastructure needs. Infrastructure for the purpose of this work scope includes all facility support structures; operational equipment; fire protection; electrical systems; plumbing; heating, ventilation and air conditioning equipment; superstructures; interior and exterior enclosures;

roofing; foundations; basement construction; conveying systems; stairs; and furnishings. The areas of consideration include the Tank Farms and associated systems, structures and components, S-Area, Z-Area, ETF, and SWPF in J-Area, once the SWPF is transitioned to the Contractor. It also includes the office trailers and other supporting facilities in areas B, E, G and T-Areas (see

Section J, Attachment J-8, Government Furnished Services and Information (GFS/I)). The

Contractor shall provide to DOE quarterly maintenance updates including a list of maintenance activities for these areas that were completed during the preceding quarter, a prioritized list of maintenance activities that are scheduled to be performed, and newly identified maintenance activities. The maintenance activities shall be prioritized and risks associated with non-performance of the maintenance activities shall be identified and described with respect to safety and continued operations.

C.2.1.1 Tank Farms

Tank Farms operation includes multiple facilities and processes, including waste tank system transfers, evaporator operations, space management, salt and sludge waste retrieval, feed batch preparation for waste treatment facilities, and preparation of waste for transfer to other LW facilities, waste disposition, and, ultimately, operational closure of underground waste storage tanks and ancillary equipment.

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C.2.1.1.1 Actinide Removal Process/Modular Caustic Side Solvent Extraction Unit

(ARP/MCU)

Operation of ARP/MCU (interim salt processing and disposition of radioactive salt waste) was suspended and isolated to allow SWPF radioactive tie-ins to the liquid waste system. The

Contractor shall maintain the ARP/MCU processes and facilities in a lay-up status until DOE makes the decision to proceed with final layup and complete execution of the de-inventory plan.

Ventilation system filters will continue to be maintained to ensure any residual contamination is not be released from the facilities.

Alternately, the Contractor may, with DOE approval, re-purpose the ARP/MCU systems as part of the system optimization activities for accomplishment of the PWS consistent with applicable requirements.

C.2.1.1.2 Tank Farm Operations

The Contractor shall operate the Tank Farms to receive, concentrate, and store liquid radioactive wastes in support of ongoing Site activities and ensure the continued operability and structural integrity of the liquid radioactive waste tanks and ancillary structures. The Contractor shall be responsible for effective Tank Space Management, Salt Feed Preparation, Sludge Feed

Preparation, Bulk Waste Removal/Retrieval, and Management of the ETF. The Contractor shall maintain a comprehensive tank inspection program that is compliant with the requirements specified in the SRS Federal Facility Agreement (FFA). Mercury monitoring/sampling and chemical analysis throughout the LW systems will continue to be performed. Mercury shall be managed consistent with the Safety Basis.

The Contractor shall ensure the Tank Farms have the capacity to receive up to 300,000 gallons of waste from H-Canyon processing operations annually through FY 2030.

Supplemental Information

The radioactive liquid waste contained in the underground storage tanks is in the form of saltcake, salt supernate, or insoluble sludge solids. The functions of the underground storage tanks are:

- Receipt and storage of radioactive liquid waste and by-products generated by operation of the chemical separations processing and research facilities.

- Prevention of potentially harmful exposure from radiation to Site worker and members of the public.

- Prevention of potentially harmful quantities of radionuclides and chemicals from escaping to the environment.

- Maintaining safe storage of the liquid radioactive waste.

- Preparing batches of liquid radioactive waste for treatment into a more stable form

(solidification) for final disposition.

The F-Area Tank Farm (FTF) is a 22-acre site containing eight Type I, two Type III, eight

Type IIIA, and four Type IV storage tanks. Six tanks in FTF have been operationally closed. In

C-13 addition, FTF also includes supporting ancillary structures such as two evaporator systems, transfer pipelines, diversion boxes, a concentrate transfer system, a catch tank, and three pump pits. The H-Area Tank Farm (HTF) is a 45-acre site containing four Type I, four Type II, four

Type III, thirteen Type IIIA, and four Type IV tanks. Two tanks in H-Tank Farm have been operationally closed. In addition, HTF includes supporting ancillary structures such as three evaporators, eight diversion boxes, ten pump pits, pump tanks, transfer valve boxes, and transfer piping. Also located in HTF is the ARP/MCU processing system. The twenty-four Type I, II, and IV tanks do not meet the secondary containment standards in the SRS Federal Facility

Agreement. Eight of these tanks have been operationally closed. Out of these sixteen tanks that remain in service, eight tanks have leaked waste through the primary tank wall into their respective secondary containment (i.e. annulus space) and six of these tanks have completed bulk waste removal efforts (tanks 4F, 7F, 8F, 10H, 11H and 15H). Execution of waste retrieval in Type I and II tanks that have leak sites may reactivate these leak sites or expose new leak sites.

C.2.1.1.2.1 Tank Space Management

The Contractor shall maintain usable working tank storage capacity (space) to support waste retrieval and prepare waste for permanent immobilization and disposition of HLW in a vitrified waste form and low-level waste in a grouted waste form (e.g., preparation of sludge and salt feed for DWPF and SWPF and receipt of waste from DWPF, ETF, and H-Canyon). The Contractor shall implement effective supplemental space management initiatives as necessary, including the operation of evaporator systems.

Supplemental Information

Since 1951, the Tank Farms have received over 160 Mgal of liquid waste, of which most has been evaporated and/or treated, leaving approximately 35.3 Mgal in the storage tanks. Available storage space is used for waste receipts, waste retrieval, and processing operations. A contingency amount of 1.3 Mgal is not included as working space and is reserved for the unlikely event of a full tank failure. Waste receipts and transfers are normal Tank Farm activities as the Tank Farms receive new or “fresh” waste from the HCanyon stabilization program, a low activity waste stream from

DWPF processing (typically referred to as “DWPF recycle”), wash water from sludge washing, and very small amount of concentrate from ETF.

The Tank Farms also make routine transfers to and from waste tanks and evaporators. The two evaporator systems, the 2H and 3H systems, support space management with volume reduction of

2 – 3 million gallons per year of liquids produced by sludge batch washing and DWPF recycle receipts. Although both systems are currently operating satisfactorily, both systems have experienced significant operational issues. A leak from the 3H evaporator pot into the secondary containment cell was successfully repaired in 2018. There are no plans to replace the

3H Evaporator pot but a spare pot will be available at the beginning of this contract performance period in case it is needed.

The space in Type III/IIIA tanks is used to: (1) retrieve waste from and clean older style (Type I, II, and IV) tanks; (2) prepare, qualify, and treat sludge waste for disposal; (3) prepare, qualify, and treat salt waste; and (4) support nuclear materials stabilization and disposal through H-Canyon.

Additionally, several old-style tanks support immobilization and disposition of HLW. Old style tanks (Types I, II, and IV) are shown in Figures 2.4-1, 2.4-2, and 2.4-4 in

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WSRC‑SA‑2002‑00007‑VOL‑1‑DSA‑ES, Ch. 1, 2 Rev 17, provided in the Document Library. The

Tank Farm space management strategy in the Liquid Waste System Plan

(http://www.srs.gov/general/pubs/srr-lw-systemplan.pdf) is based on projections of DWPF canister production rates, salt waste processing rates, influent stream volumes, Tank Farm evaporator performance, and space gain initiative implementation. Reuse of old style tanks for storage of liquid may require DOE and/or regulator approval. The below Table identifies the operational and operational closed tanks.

Operational Tanks

Old Style Tanks Compliant Tanks

Type I Type II Type IV Type III Type IIIA Total

F Tank Farm 6 0 0 2 8 16

H Tank Farm 3 3 4 4 13 27

Total 9 3 4 6 21 43

Operationally Closed Tanks

Old Style Tanks Compliant Tanks

Type I Type II Type IV Type III Type IIIA Total

F Tank Farm 2 0 4 0 0 6

H Tank Farm 1 1 0 0 0 2

Total 3 1 4 0 0 8

C.2.1.1.2.2 Salt Feed Preparation

The Contractor shall be responsible for operation and maintenance of equipment necessary to dissolve, batch, and adjust salt waste from various tanks to serve as feed for TCCR and SWPF.

Salt batches shall meet the waste acceptance criteria (WAC) of the facility it will be transferred to.

Tank Farm feed preparation infrastructure modifications required to support SWPF increasing processing rates include:

- Waste retrieval infrastructure in several tanks to support salt batch feed preparation

- Mixing capabilities

- Enhanced transfer capabilities

- Transfer routes provided to blend/feed tank(s)

Supplemental Information

Salt feed preparation includes development of salt batches from various waste tanks for feed to salt treatment processes including SWPF and TCCR. Salt Feed Preparation for each batch currently requires four months for compiling, sampling, analysis, qualifying and transfer into the batch feed http://www.srs.gov/general/pubs/srr-lw-systemplan.pdf

C-15 tank. SWPF is planned to process the majority of this salt solution waste. Salt preparation capability is dependent on the number of blend tanks available to prepare salt batches. Currently, a single tank is capable of preparing 3 to 4 Mgal/yr. Three blend tanks are needed to enable the Tank

Farms to feed SWPF at 9 Mgal/yr. Two blend tanks are expected to be available upon SWPF startup and the third blend tank will be available for SWPF’s second year of operation.

Factors that impact salt feed preparation include:

- Blend Tank availability

- Timely preparation of tanks for waste retrieval

- Effective and efficient saltcake dissolution

- Waste transfer logistics

Salt treatment technology demonstration of the at-tank cesium removal is in progress. Refer to

Section C.2.2.5.2 for additional information.

C.2.1.1.2.3 Sludge Feed Preparation

The Contractor shall be responsible for operation of equipment and conducting treatment processes used to prepare sludge waste feed to sustain DWPF vitrification operations. The Contractor shall effectively couple tank waste retrieval operations with sludge waste feed preparation operations to provide sludge waste: 1) within compositional ranges that support sludge waste blending and preparation into batches that meet DWPF prescribed feed specifications; and 2) with sufficient volume to ensure the continuous availability of sludge waste feed to DWPF. The Contractor shall also model sludge waste feed preparation activities and execute activities necessary to ensure that

DWPF vitrification operations can be sustained beyond the Contract period of performance.

Supplemental Information

The basic steps for sludge processing are: 1) sludge removal from tanks; 2) optional Low-

Temperature Aluminum Dissolution; 3) blending and washing of sludge followed by sample, analysis, and qualification; and 4) sludge feeding to the DWPF. Currently a single tank (Tank 51H) is the sole DWPF feed preparation tank (see Figure 1).

Sludge preparation is paced by bulk waste retrieval and by tank storage space to prepare sludge batches. Sludge batch planning uses the estimated mass and composition of sludge and known processing capabilities to optimize processing sequences. The planned sludge batches are identified in the approved Liquid Waste System Plan.

Differences in sludge batch sequencing, total number canisters produced, and batch end dates is an effort to balance the end of salt processing more closely with the end of sludge processing. The projected canister pour rate is balanced to be appropriate for salt processing support.

Waste generated from processing of spent nuclear fuel and targets in H-Canyon has resulted in high amounts of aluminum solids as gibbsite or boehmite. Much of this aluminum can be removed from the sludge by dissolution of the aluminum and subsequent removal by decanting of the liquid phase. This reduces the number of canisters needed to disposition the sludge, due to the lowered

C-16 sludge solids mass and improved waste loading in the glass. Dissolution is achieved by adding caustic, elevating temperature, mixing, and sufficient reaction time.

Sodium (Na) and other soluble salts (e.g., sulfates, nitrates, nitrites) in DWPF feed are reduced through sludge washing. Sludge washing is performed by adding water to the sludge batch, mixing with slurry pumps, securing the pumps to allow gravity settling of washed solids, and decanting the sodium-rich supernate to an evaporator system for concentration. This cycle is repeated until the desired molarity (typically 1.25 M Na) is reached. Some types of sludge settle slowly, extending wash cycles. Sludge settling and washing typically constitutes ~75% of batch preparation time. The total number of washes performed and volume of wash water used are minimized to conserve tank space. Sludge batch size and wash volumes are also limited by the hydrogen generation rate associated with radiolysis of water. Tank contents are mixed on a periodic frequency to release hydrogen retained within the sludge layer, resulting in a limited window within operating constraints for gravity settling.

C.2.1.1.2.4 Bulk Waste Retrieval/Removal

Note: In this document, the terms “bulk waste retrieval” and “bulk waste removal” may be used interchangeably and signify the same set of activities.

The Contractor shall retrieve and remove sufficient waste from older style and compliant tanks to ensure adequate support of salt and sludge batch preparations. Preference should be given to retrieval and removal from older style tanks that are within or beneath the water table (Type I and II tanks in H-Area Tank Farm) and all tanks in F-Area Tank Farm to enable F-Area Tank Farm closure in 10 years.

The Contractor shall be responsible for design, procurement, installation and operation of equipment for conducting bulk waste retrieval/removal of salt and sludge from the liquid waste storage tanks. The Contractor shall prepare and treat waste to meet the Waste Acceptance Criteria of downstream facilities, including SWPF, Tank 50H, the Saltstone Facility, and DWPF.

Completion of bulk waste retrieval/removal activities is defined as DOE concurrence on the

Contractor provided detailed presentation of the specified tank’s completion of bulk waste removal efforts with conclusive evidence. Future work scope for the specific tank transitions to the Tank

Closure process (C.2.2.3) if closure is the next step or to Tank Space Management (C.2.1.1.2.1) if the tank will continue in service.

Supplemental Information

Bulk waste retrieval/removal of salt waste is currently conducted by adding liquid (e.g., dilute supernate, DWPF recycle water) to waste tanks with sufficient mechanical agitation that the saltcake material is dissolved for transfer to the appropriate hub tank, then transferred to a blend tank to be combined with salt solution from other tanks to achieve the appropriate chemistry balance. In the blend tank chemistry or other waste properties may be adjusted in order to meet the

SWPF requirements. Currently, dissolution of one 1.3 million gallon tank full of saltcake results in the generation of 4 million gallons of dissolved salt solution, which is equivalent to approximately 3 to 4 full tanks of dissolved salt. Retrieval/removal of sludge waste also includes addition of liquid (e.g., supernate, water) to sludge (non-soluble) waste, agitation by several mixer pumps to suspend sludge solids, and transfer to a hub tank set up to receive and transfer sludge to

C-17 the feed preparation tank, or directly to the feed preparation tank to then proceed with sludge washing. Similarly, slurrying of one gallon of settled sludge increases the volume of sludge waste to 1.3 gallons of slurried sludge.

C.2.1.1.2.5 Effluent Treatment Facility (ETF)

The Contractor shall be responsible for operation of the ETF in compliance with environmental regulations associated with the Resource Conservation and Recovery Act (RCRA) and the

National Pollutant Discharge Elimination System (NPDES) under the Clean Water Act. The ETF operator in charge shall be certified by the South Carolina Environmental Certification Board and hold an “A” Physical/Chemical Wastewater Certificate.

The Contractor shall maintain the facilities in a ready-to-serve status, function as a service provider for other Site contractors, and coordinate with waste generators to develop annual waste volume projections.

Supplemental Information

The ETF is classified as an “A” Level physical/chemical wastewater treatment facility by the

SCDHEC. The ETF treats low-level radioactive wastewater from the F and H Area separations and waste management facilities, F/H Laboratory, the Savannah River National Laboratory, H Tank

Farm evaporator overheads and miscellaneous sources, such as Soil and Groundwater Closure

Projects well purge water. The ETF removes chemical and radioactive contaminants before releasing the water into Upper Three Runs Creek, a SRS stream that flows to the Savannah River.

Because the Savannah River water eventually flows into municipal drinking water facilities, radiological effluents are governed by the Federal Clean Water Act. ETF non-radiological effluents are discharged within limits of permits issued by SCDHEC.

The ETF is designed and constructed to allow SRS to meet all environmental regulations associated with the Resource Conservation and Recovery Act and the National Pollutant Discharge

Elimination System under the Clean Water Act. The ETF is designed to operate at an average capacity of 165 gpm and with a “sprint” capability of 300 gpm for short durations. The maximum permitted facility capacity is 430,000 gallons per day. The ETF encompasses wastewater collection and treatment operations that were modified for radioactive use. It was designed to remove heavy metals, organic chemicals and corrosive chemicals, as well as cesium and other radiological contaminants from the Site’s waste water.

C.2.1.2 Waste Vitrification

Waste Vitrification operations includes the DWPF and the two existing GWSBs.

C.2.1.2.1 Defense Waste Processing Facility

The Contractor shall operate the DWPF to optimize the processing of the sludge and high activity feed streams from salt processing into a vitrified waste form that meets or exceeds all requirements for interim storage at SRS and all requirements regarding the acceptability of the vitrified waste form for disposal in a licensed Federal Repository. The Contractor shall avoid sludge feed breaks to DWPF. Mercury shall be managed consistent with the Safety Basis. The Contractor shall ensure

C-18 the availability of a spare melter to effect a timely replacement of an operational melter in the event of its failure. The Contractor shall maintain a concentration limit of 897 g/m3 of fissile material in the glass and a canister heat load of less than 792 watts per canister. The concentration limit of 897 g/m3 is currently being reviewed for potential increase to 2500 g/m3. The Contractor shall also provide for safe storage of failed melters onsite by constructing failed melter boxes and

Failed Equipment Storage Vaults (FESV). The Contractor shall procure canisters for use in DWPF as necessary to ensure continued operations. DWPF canister production shall continue to meet the requirements of DOE/RW‑0333P, Quality Assurance Requirements and Description, until and unless directed otherwise by DOE.

Supplemental Information

DWPF Canister Production

The DWPF facility receives and combines washed sludge and high activity waste from salt processing with glass frit for vitrification and pouring into canisters. Tank Farm sludge waste feed preparation has supported canister production of as high as 337 canisters in a 12 month period as well as feed preparation systems internal to DWPF. The total canister production is expected to vary during the Contract period commensurate with the receipt of high activity streams from

SWPF.

To support higher glass throughput, the DWPF melter was retrofitted with four bubbler systems and the melter off-gas system was optimized in September 2010. Additional process improvements are necessary in order to support SWPF operations at a feed rate up to 9 Mgal per year. These improvements are scheduled to complete in FY21 and they are as follows:

- Implementation of an alternate reductant

- Processing of cesium Strip Effluent (SE) in the Slurry Mix Evaporator (SME)

- Laboratory Waste Handling modifications

- Management of the high activity waste streams to be received from SWPF

- Critical Spares in inventory

Based on the current Liquid Waste System Plan, canister production schedules include two one-week outages every year to allow for routine planned maintenance and another two weeks for the

Site-wide steam outage each year. A four-month melter outage is assumed around FY2029 as melter life is conservatively estimated to be 10 years. Melter replacement is determined by actual melter performance. Melter #4 is anticipated to be operationally ready for use at the time of contract award. Canister production and sludge batch need dates were projected in the current

Liquid Waste System Plan based on:

- DWPF recycle is beneficially reused.

- Pu discards from H-Canyon will be supported to the extent allowable without negatively impacting planned canister waste loadings while continuing to comply with the canister fissile material concentration limits.

C-19

DWPF Feed and Recycle

Sludge processing through the DWPF removes the highest risk material from the tanks. However, for every 1.0 gallon of sludge processed, 1.3 gallons of salt waste is formed due to sludge washing and DWPF processing operations to return the resulting low hazard salt waste to the Tank

Farm (DWPF recycle). Similarly, salt waste retrieval/removal, preparation, and batching typically require the use of about three to four gallons of tank space per gallon of salt cake dissolved.

Sludge processing is paced by tank storage space to prepare sludge batches. DWPF Recycle is the largest influent stream received by the Tank Farm. Volume reduction of the recycle stream is handled through evaporation by the 2H Evaporator System. The DWPF recycle rate could increase as high as 3.7 Mgal/yr after the SWPF starts operations.

DWPF Recycle is the largest influent stream received by the Tank Farm. Diverting the DWPF recycle stream will provide opportunities for simplification of the evaporator systems and the handling of sludge batch preparation facilitating the waste removal and closure of a number of tanks in H-Tank Farm. Alternative analysis is in progress to determine an appropriate path forward.

Failed Equipment Storage Vaults (FESVs) and Melter Storage Boxes (MSBs)

Construction/fabrication of Failed Equipment Storage Vaults (FESVs) and Melter Storage

Boxes (MSBs) are repetitive activities required to sustain ongoing DWPF operation by providing interim storage of failed DWPF melters. Currently there is one FESV constructed, containing two vaults. Each vault was designed to store one failed melter inside an MSB.

FESV is currently storing Melter #1 and Melter #2. Space has been reserved for construction of up to ten FESVs, if needed. Design and construction of the next FESV will be in progress when this contract period of performance starts. One MSB for Melter #3 will be complete and available in storage.

Large contaminated failed equipment is currently stored in the 221S Canyon.

C.2.1.2.2 Glass Waste Storage Buildings (GWSB)

The Contractor shall operate and maintain GWSB #1 and #2 to store glass waste canisters produced at the DWPF on an interim basis pending shipment for offsite disposal at a licensed

Federal Repository. The Contractor shall continue on-going canister double-stacking activities in

GWSB #1 to increase the total number of storage locations for standard canisters to 4,508.

Supplemental Information

DWPF canisters are currently stored onsite in two dedicated interim GWSBs. A Shielded Canister

Transporter (SCT) moves one canister at a time from the DWPF to a GWSB. Both GWSBs are qualified to meet or exceed a Performance Category 2 design basis earthquake.

GWSB #1 consists of a below-grade seismically qualified concrete vault containing support frames for vertical storage of 2,286 storage positions of which 2,262 standard canister positions are in use

C-20 storing radioactive canisters. GWSB #2, with a similar design to GWSB #1, has 2,340 standard storage locations and is currently being filled with radioactive canisters as they are produced.

There are also approximately 20 locations in DWPF available for canister storage pending transfer to a GWSB.

The GWSB #1 storage structure and services consist of four storage compartments, an SCT operating floor, air inlet and exhaust shafts, and attached building support facilities. The storage capacity of GWSB #1 is currently being expanded to double the capacity to 4,524 canisters by

“double stacking” the canisters one on top of the other. Modification of canister positions and double stacking operations are in progress.

Based on the current System Plan, additional storage capacity will be required with availability beginning in FY30 as current storage capacity is 6,861 and the total projected storage requirement is 8,121 for a shortfall of 1,260 canisters.

C.2.1.3 Low Activity Waste Disposal

The Low Activity Waste Disposal is conducted by transferring Decontaminated Salt

Solution (DSS) from Tank 50H to the Saltstone Facility consisting of the Saltstone Production