384663 - Attach 1 SOW.pdf

STATEMENT OF WORK – MANAGED TASK

TITLE: Bulk Sodium Sampling and Analysis

Revision 0 August 25, 2025

Prepared by: J. Luey

1.0 INTRODUCTION / BACKGROUND

This Statement of Work (SOW) is issued for the performance of Bulk Sodium Sampling and Analysis services in support of Central Plateau Cleanup Company (CPCCo) work scope. CPCCo (Buyer) is a prime contractor to the Department of Energy (DOE) and all work on this SOW will be performed in support of the CPCCo prime contract with DOE.

Drums (three total) that will be transported by the Buyer to a Contractor facility for sampling were originally received at Hanford in 1975. There are a total of 158 208-Liter (55-gallon) drums (inerted and sealed), each overpacked in a 321-Liter (85-gallon) drum. Each inner drum was originally inerted with a nitrogen blanket prior to sealing and transport to the Hanford Site. The drums are stored within the South Alkali Metal Storage Modules in the Hanford 200 West Area.

2.0 DESCRIPTION OF WORK – GENERAL

Contractor employee(s) shall be responsible for independently planning, organizing, and performing a wide variety of specialized technical duties in support of the successful completion of goals and deliverables in accordance with all provisions of the Contract.

The Hanford Site has solid bulk sodium stored in drums and tanks. To support the development of processing and disposition options, sampling and analysis of the solid bulk sodium is needed.

3.0 DESCRIPTION OF WORK – SPECIFIC

The work scope for this activity includes the resources, material and/or equipment necessary to accomplish the following activities:

A. Contractor shall sample and analyze three (3) drums provided by the Buyer. Each drum contains solid bulk sodium and needs to be sampled and analyzed for constituents described in Table 1.

B. After sampling, each drum shall be resealed as part of preparation for CPCCo to pick up the drums and return to Hanford. Any unused samples are to be disposed by Contractor in accordance with applicable regulatory requirements.

C. Contractor shall provide resources and equipment to support training and field observation/support of CPCCo resources to enable CPCCo to obtain a sample from two

(2) tanks on the Hanford Site that contain solid bulk sodium. Recovered samples will subsequently be transported by CPCCo to a Contractor named facility for analysis by Contractor for constituents described in Section 3.1. Any unused samples to be disposed by Contractor in accordance with applicable regulatory requirements.

The DOE Hanford Field Office, through discussions with the DOE Office of Nuclear Energy, has identified a potential use for Hanford’s bulk sodium for commercial reactors that are currently in various stages of development. Information shown in Table 1 was extracted from a bulk sodium specification provided by the DOE Office of Nuclear Energy. The specification is for bulk sodium intended for use in new commercial reactors. As shown in Table 1, there are not a specified limit for silicon and cesium; data for these elements are for information (as indicated by “Report for Information” in the table).

Table 1. Maximum Permissible Sodium Impurity Level* (wppm)

Element Limit in Received Sodium, wppm

Calcium (Ca) <10

Potassium (K) <300

Chlorides and Bromides (Cl + Br) <20

Uranium (U) <0.01

Silicon (Si) Report for Information

Sulfur (S) <10

Lithium (Li) <5

Cesium (Cs) Report for Information

Boron (B) <25

Carbon (C) <10

Lead (Pb) <5

*These specified levels (weight parts per million, wppm) include the analytical uncertainty, and hence, the measure value for an impurity plus its respective uncertainties must not exceed the specified levels.

3.1.1 Task A Sampling and Analysis of Drums

Records at the time of filling indicate the drums contain slightly radioactive sodium (4 mR/h at the surface of each drum of sodium). The estimated radiological content (based on review of 1976 data) was:

Na-22: 3.29E-2 Ci Sr-90: 2.85E-5 Ci Cs-137: 4.55E-2 Ci Pu-239: <5.06E-6 Ci

Radiological survey performed in March 2025 measured 0.2 and 0.3 mR/hr at the surface of the drum overpack (background measurements were 0.01 to 0.02 mR/hr). Values represent the maximum measured for a drum within an Alkali Metal Storage Module. At least one drum from each of the eight storage modules was measured, specific number is not stated in the radiological survey report.

A. Contractor shall provide a Drum Handling and Sampling Plan Development - The plan shall address the following at a minimum: industrial health and safety elements associated with receipt of the drums, sampling strategy to obtain a representative sample, opening of drums, collection of sample, protocols to be followed for handling of samples for analysis, performance of analysis (with methodology/specification, blanks, duplicates, quality assurance, spikes, etc. defined), and resealing of drums.

B. Contractor shall provide a Waste Management Plan Development – This plan is to provide the specifics for how secondary waste generated from activities will be handled and dispositioned. As applicable, the plan shall also indicate how unused samples will be dispositioned.

C. Contractor shall provide an Analytical Results Reporting – The report shall contain at a minimum, the raw analytical results with a cover sheet that summarizes:

Results for the specific elements in Table 1.

Analytical method(s) and associated measurement uncertainty.

Concerns the analytical lab noted during handling of sodium sample.

3.1.2 Task B Sampling and Analysis of Hanford Storage Tank

The Sodium Storage Facility (Building 402) is located in Hanford’s 400 Area. There are four (4) tanks within the facility (T-3001 through T-3004). Tanks T-3001 (196,800 liters) and T-3004 (302,800 liters) are of interest because they contain sodium that is anticipated to be free of radionuclides given the source of the sodium from FFTF.

Drawings associated with the facility are provided as attachment to this SOW. An argon cover gas is maintained within the tanks as indicated on the Process Piping drawings in the attachment.

Due to the presence of measurable radiation dose within the facility, and the unknown condition of the heating systems and access points into the tanks, this task is divided into an initial effort and an optional effort.

Contractor shall provide an Initial Feasibility Assessment: This Contractor activity is comprised of the following elements.

A. Review of Sodium Storage information package to determine potential sampling points, identification of systems required to be operational to enable sampling, and identification of elements for which a field walkdown would be beneficial to support the feasibility assessment.

B. Provide input to CPCCo work planning package for safe implementation of the field walkdown and identification of walkdown objectives. The CPCCo work planning package will identify known hazards in Building 402 and provide the requirements for entry into the building for the non-intrusive walkdown.

C. Participate in the CPCCo led field walkdown. Contractor will be in the presence of CPCCo personnel at all times during the field walkdown.

D. Provide report that documents the feasibility to collect sample from tanks T-3001 and T-3004, outlines the sampling activities, identifies equipment that would be provided by the Contractor, and recommended systems for which CPCCo would need to bring online to enable sampling.

3.1.3 Optional Task: Tank Sampling (based on previous sampling results)

A. Contractor shall provide input to CPCCo work planning package for safe implementation of the sampling activities identified in Task B1.D.

B. Contractor shall provide resources and sampling-specific equipment for the training of CPCCo personnel in a “mock-up” non-radiation area setting.

C. Contractor shall provide resources to support CPCCo personnel in the execution of sampling from Tanks T-3001 and/or T-3004.

D. Contractor shall receive and analyze CPCCo-delivered samples from Tanks T- 3001 and T-3004.

E. Contractor shall provide Analytical Results Reporting – The report shall contain at a minimum, the raw analytical results with a cover sheet that summarizes:

Results for the specific elements in Table 1.

Analytical method(s) and associated measurement uncertainty

Concerns the analytical lab noted during handling of sodium sample.

F. Contractor shall provide Waste Management Plan – This plan is to provide the specifics for how unused sample material is to be dispositioned.

3.2 Special Requirements

Contractor shall have demonstrated procedures for handling and sampling bulk sodium in place prior to acceptance of drums containing bulk sodium with low radioactivity levels. If procedures are new, Contractor shall provide objective evidence for validation of procedures prior to scheduling delivery of drums by CPCCo.

3.3 Acceptance Criteria

Work products and services provided shall meet all applicable Buyer procedures for control and review of work products and pertinent regulatory requirements.

3.4 Organizational Interfaces

The Contractor shall interface with various Buyer (and other) organizations through Buyer’s Contract Specialist (or designee), as required. The interfaces identified to date include:

A. CPCCo Transportation Group: Coordination for receipt of drums. Coordination for placing sampled drums into an acceptable condition for return to Hanford.

B. CPCCo Work Planning Group: Coordination to provide input for tank field walkdown.

3.5 Work Not Included

Work not included in this contract includes: No elements have been identified at this time.

3.6 Buyer Furnished Materials and Equipment

Buyer will furnish the following materials, equipment, and facilities at no cost to the Contractor for use in performing this work scope: No elements have been identified at this time.

3.7 Site Conditions and Known Hazards

The site conditions and/or known hazards for the Sodium Storage Facility are.

A. Argon is used as a cover gas within each of the tanks located in the facility.

B. Water is prohibited from entry into the facility due to the reactive nature with sodium.

C. Facility entry procedures include requirements for personal oxygen monitor.

D. Facility is a “Radiological Facility” and not subject to Documented Safety Analysis requirements.

3.8 Site Coordination Requirements

Contractor site coordination and interface requirements include those described in Section 3.4 along with visitor requirements which will be further defined during work planning for activities performed on the Hanford Site.

4.0 TECHNICAL REQUIREMENTS

Contractor shall perform in accordance with the terms and conditions, Buyer’s internal policies and procedures, and quality assurance provisions, including safety programs, laws, orders, permits, rules, confidentiality of information and intellectual property safeguards.

4.1 Work Location/Access Requirements

A. Work scope for Task A shall be performed at Contractor and sub-tier subcontractor facilities.

B. Work scope for Task B shall be performed at Contractor facility with the exception of the field walkdown of the Sodium Storage Facility. CPCCo work planning package will identify access requirements, which are currently assumed to be issuance of a visitor badge and radiation dosimeter to Contractor personnel participating in the field walkdown.

5.0 PERSONNEL REQUIREMENTS

The Contractor shall provide appropriately trained and qualified staff to perform the type of work associated with their skill of craft while performing services in support of the SOW.

5.1 Required Qualifications

Staff assigned to work on the SOW tasks shall have demonstrated experience working with metallic sodium and/or other water reactive material.

5.2 Training Requirements

A. Task specific unique training or qualifications required for this task will be as defined in Contractor and sub-tier subcontractor procedures.

B. At this time there are no Hanford-specific training requirements for the safe performance of requested tasks that involve site and facility access.

5.3 Security and Badging Requirements

A. Site access badging is not required for Task A.

B. For Task B, site visitor badge will be issued along with dosimetry (if determined to be required by CPCCo work planning) for the field walkdown. Contractor shall notify Buyer if non-U.S. Citizen will be performing field walkdown. Additional requirements may apply.

C. For Optional Task, planning purpose assumption is that Contractor on-site work will not be longer than 7 days in duration. Site visitor badge and dosimetry is anticipated. Security and Badging requirements will be reassessed once the scope for the Optional Task is better defined.

5.4 Site Access and Work Hours

Work performed on site shall be done on a 4 x 10 schedule. The standard workday consists of ten (10) hours of work between 6:00 AM and 4:30 PM, with one-half hour designated as an unpaid period for lunch. No work occurs on the non-working Fridays.

If schedule alternative is required, Buyer’s Technical Representative (BTR) will coordinate with Contractor’s point of contact when CPCCo resources are affected.

6.0 ENVIRONMENTAL, SAFETY, AND HEALTH REQUIREMENTS

The quality level (QL) for this SOW is identified as a QL-3 as work involves the handling and sampling of solid sodium, a reactive chemical.

The Contractor shall perform work safely, in a manner that ensures adequate protection for employees, the public, and the environment, and shall be accountable for the safe performance of work. The Contractor shall comply with, and assist Buyer in complying with, Environmental, Safety, and Health, (ES&H) requirements of all applicable laws, regulations, and directives.

7.0 MEETINGS AND SUBMITTALS

7.1 Meetings

Contractor shall participate in the following meetings:

A. Project Kick-Off (in person preferred)

B. Bi-weekly status between CPCCo BTR and Contractor assigned Point of Contact (via Teams®)

C. Planning meeting for coordination of CPCCo delivery of drums to Contractor (via Teams®)

D. Planning meeting for coordination of CPCCo-led field walkdown of Sodium Storage Facility. (in person preferred)

7.2 Submittals

Contractor shall submit the following documents in support of this SOW.

A. Task A Drum Handling and Sampling Plan for CPCCo review and approval.

B. Task A Waste Management Plan for CPCCo review and approval.

7.3 Requirements for Submittals and Documents

Generally, documents shall be provided with an electronic file submitted in the current site standards. Clean originals of all figures, tables, or other graphics not contained in the text file shall also be provided and separate files submitted. Submittals shall be provided in electronic format unless available only as a hard copy. Electronic formats must be non-password protected in one of the following formats:

Microsoft® Office Compatible Moving Picture Expert Group (MPEG)

Portable Document Format (PDF) Extensible Markup Language (XML)

Tagged Image File Format (TIFF) HyperText Markup Language (HTML)

Graphics Interchange Format (GIF) Comma Separated Values (CSV)

Joint Photographic Experts Group (JPEG) Text (TXT)

Windows Media Video (WMV)

8.0 DELIVERABLES, PROJECT CONTROLS, MILESTONES, AND

PERFORMANCE SCHEDULE REQUIREMENTS

Deliverables include:

A. Task A - Analytical Results document.

1. Initial DRAFT for CPCCo review

2. FINAL with comments addressed for CPCCo approval.

B. Task B – Tank Sampling Feasibility Assessment.

1. Initial DRAFT for CPCCo review

2. FINAL with comments addressed for CPCCo approval.

The schedule for Task A and Task B will be developed in collaboration between the CPCCo BTR and Contractor Point of Contact. Factors such as CPCCo transportation scheduling (for Task A), CPCCo development of work planning packages (for Task A to recover drums for transport to Contractor and for Task B to support field walkdown of Sodium Storage Facility), and Contractor scheduling of resources (Task A and Task B) will be considered in the development of the overall schedule.