A.14 SURATech RFP-RFQ 26-R455678 Cryo SNS Cold Box Shell Analysis.pdf

DATE: 3 September 2026

FROM: SURATech, LLC 12000 Jefferson Avenue Newport News, VA 23606

TO: Interested Vendors

SUBJECT: REQUEST FOR PROPOSAL

Thomas Jefferson National Accelerator Facility (TJNAF) invites you to participate in the attached Request for Proposal (RFP) for performing a stress analysis and interpreting the results to demonstrate that a vacuum vessel design complies with the requirements of the ASME Boiler and Pressure Vessel Code, Section VIII, Division 2, Part 5. All documents listed on the RFP form PD 6 are contained within this email.

• All information has been posted on our Solicitation Bulletin Board – http://misportal.jlab.org/ul/Bus_ops/ . All documents listed on the RFP form PD 6 can be viewed and downloaded from TJNAF’s solicitation bulletin board. In addition, this RFP will be posted on SAM.gov.

• If you are interested in submitting a proposal in response to this solicitation, be sure to register for this specific solicitation on the above website and let me know by return email. Any amendments or other information associated with the requirement will be posted on the Solicitation Bulletin Board, and by registering, you will be automatically notified when postings occur.

• Also, please pay very close attention to the Instructions to Offerors and adhere to the proposal instructions to the letter. The format of your proposal is very important to facilitate an efficient and timely review process.

• Please reference Solicitation # SURATech-26-R455678 on all communication to TJNAF related to this solicitation.

• If you are not interested in providing a proposal for this requirement, please send a “No Bid” notification to me via email.

Please note the following important dates:

• Questions regarding the solicitation must be submitted in writing to me not later than 4:30 PM (Eastern Standard Time) on September 11, 2026, http://misportal.jlab.org/ul/Bus_ops/

TJNAF will need time to respond to the questions and in turn provide you the opportunity to incorporate any new information into your proposals

• Proposals are due no later than 4:30 PM (Eastern Standard Time) on September 21,2026. It is the intent of TJNAF’s to award a subcontract for the SNS 2KCB Vacuum Shelf Analysis 30 September 2026.

Should you have any questions, please send an email to drye@jlab.org or call me at 757-269-6511.

Sincerely, Dena Drye SR Procurement Officer mailto:drye@jlab.org

Page 1 of 2 PD 6 (JUNE 2026)

REQUEST FOR PROPOSAL (RFP)/REQUEST FOR QUOTE (RFQ)

SOLICITATION, OFFER AND AWARD

RFP/RFQ No.: SURATech -______-_________ Date Issued:

Proposals/Quotes Are Due:

No later than _____ PM EST on ________

Site Visit:

☐ Will Be Held At ______ PM EST on ______ (See #4 Below) ☐ Will Not Be Held

Procurement Officer: Telephone: Email:

Alternate Contact: Telephone: Email:

1. PROPOSAL/QUOTE INSTRUCTIONS – SUBMIT ALL OF THE FOLLOWING WITH YOUR PROPOSAL:

a. Completed/Signed PD 6 Form

b. Proposal or Bid Schedule

c. Completed/Signed Representations and Certifications

d. Other Information as described in the attached Proposal/Quote Instructions

2. BASIS FOR AWARD – AWARD WILL BE MADE AS INDICATED BY BOX MARKED BELOW:

☐ Best Value – Tradeoff Process ☐ Best Value – Low Price Technical Acceptability ☐ Specific evaluation factors apply to this solicitation. See the Evaluation and Award criteria.

3. CONSTRUCTION MAGNITUDE (Minimum: $ , Maximum: $ , Not Applicable: )

4. SITE VISIT – ATTENDANCE AT A PRE-PROPOSAL SITE VISIT ☐ IS ☐ IS NOT REQUIRED

If required, offerors must attend a site visit to be eligible for award of any subcontract resulting from this solicitation. Attendees must report to the Support Service Center (SSC) building (Building No. 28), 628 Hofstadter Road, Newport News, VA, no later than the date and time specified above. Additional site visits / conferences will only be held if the Procurement Officer determines they are in the best interest of Jefferson Lab.

The following are applicable if box is checked:

☐ Hard hats, safety shoes, and safety glasses are required.

☐ Attendees must pre-register for the site visit by sending an e-mail to the Procurement Officer with the company name and number of attendees. Registration deadline for the site visit is _______ on ________.

Non-U.S. citizens see International Visitors for additional requirements for international visitors.

☐ All attendees must have a valid picture ID.

5. ☐ QUESTIONS –

Any questions related to the RFP/RFQ must be in writing and should be sent by email or by fax to the attention of the Procurement Officer or mailed to the Procurement Office business address. For expediency, email is highly preferred. All inquiries regarding this solicitation must be received no later than to allow SURATech sufficient time to respond. Please reference the solicitation number in your correspondence.

6. SHIPPING TERMS: FOB Destination unless otherwise specified

7. NOTICE OF TOTAL SMALL BUSINESS SET-A SIDE:

☐ If the box to the left is marked “ ” this solicitation is set aside to small business firms only. Offers/bids received from concerns that are not small business concerns shall be considered non-responsive and will be rejected. The North American Industry Classification System (NAICS) code for this requirement is: ________. The Small Business size standard in millions of dollars is _______, and the Small Business size standard in number of employees is ________.

8. STATE AND LOCAL TAXES –

Unless otherwise indicated below or elsewhere in the solicitation or purchase order, prices shall include all applicable Federal, State, and Local Taxes.

https://www.jlab.org/visiting/international-visitors

Page 2 of 2 PD 6 (JUNE 2026)

☐ This requirement is exempt from Commonwealth of Virginia Sales and Use Taxes. A Certificate of Exemption form will be provided at award.

☐ Any Virginia Sales and Use Tax shall be included in the total price, however, shall be detailed separately in the quote and invoice.

9. APPLICABLE TERMS AND CONDITIONS- The Sections marked below are applicable and attached to this solicitation.

☐ Fixed Price Supply- Form TC-1 Commercial ☐ Fixed Price Supply- Form TC-2 Non-Commercial ☐ Fixed Price Services- Form TC-3 Commercial ☐ Fixed Price Services- Form TC-4 Non-Commercial ☐ Fixed Price Construction - Form TC-5 Construction ☐ Environment, Safety and Health Requirements (included in Specification) ☐ Service Contract Act Age Determination ☐ Davis-Bacon Act Wage Determination

10. SPECIFICATIONS, DRAWINGS, AND/OR EXHIBITS LISTED BELOW ARE ATTACHED IF BOX MARKED Required Bonds (Sample Bonds – See SF24, SF25 and SF25A here: GSA Forms)

☐ Bid Bond ☐ Performance Bond ☐ Payment Bond

Attachments included in package ☐ Instruction to Offerors ☐ Proposal or Bid Schedule ☐ Combined Specification/ Drawings ☐ Terms and Conditions ☐ Terms and Conditions Certification ☐ Davis-Bacon Rates ☐ Representations and Certifications ☐ Amendments Issued under

OFFER (COMPLETE AND SIGN)

Acknowledgement of Amendments:

Amend. No. Amend. No. Amend. No. Amend. No. Amend. No.

Payment Terms: Indicate any prompt payment discounts; otherwise, payment terms shall be Net 30 days. _________

FIRM SUBMITTING OFFER INFORMATION:

Company Name: Phone Number: Email / Fax Number:

Address: City: State: Zip:

AUTHORIZED PERSONAL TO SIGN OFFER INFORMATION:

Name: Title:

Signature: Offer Date:

RFP/RFQ NUMBER:

https://www.gsa.gov/reference/forms

Instructions to Offerors & Evaluation Process Page 1 RFP SURATech-26-R455678

INSTRUCTIONS TO OFFERORS & EVALUATION PROCESS REQUEST FOR

PROPOSAL

I. PROPOSAL INSTRUCTIONS

A. GENERAL

Thomas Jefferson National Accelerator Facility (TJNAF) is looking to procure engineering service to validate the Neutron Source (SNS) Sub-atmospheric Cold Box vacuum vessel design per the specifications located in Attachment 6 of this RFP package. To be considered for award you must submit an offer and the requested information in this Request for Proposal (RFP) package demonstrating your capability and your understanding of TJNAF’s requirements. This RFP will be a full and open competition with a Best Value/Trade-Off offeror selection process. It is TJNAF’s intent to make the award by no later than 30 September 2026. The result of this solicitation will be a firm fixed price subcontract.

1. Unless this RFP expressly authorizes alternate proposals with respect to specific terms or conditions of this RFP, your (1) failure or refusal to assent to any of the terms and conditions of this RFP, (2) proposal of additional terms or conditions, or (3) omission of any material information, will constitute a deficiency, which may make your offer unacceptable to TJNAF.

2. While TJNAF may work with the offeror through the discussion process to correct proposal omissions, errors or deficiencies, TJNAF reserves the right to award this subcontract based upon the initial offers received, without discussions. Therefore, TJNAF advises all offerors to consult with the procurement officer before submitting an offer that proposes a different design or product unless such alternate design or products are encouraged by Technical Specifications. TJNAF also reserves the right to conduct discussions and to permit offerors to revise their proposals if it is in the best interest of the solicitation.

3. When evaluating your capability to perform the prospective subcontract (see

Evaluation Factors for Award) TJNAF will consider how well a offerors complied with the outlined instructions to offerors. TJNAF will consider any significant failure to comply with these instructions to be indicative of what we could expect from you during subcontract performance. Please contact the procurement officer if you do not understand any part of the solicitation instructions.

4. Offerors must submit their proposals in an electronic format.

Instructions to Offerors & Evaluation Process Page 2

B. CONTENTS OF PROPOSALS

1. Business Proposal must include the following:

The completion and submission to TJNAF of the following items will constitute your offer to perform in accordance with the terms and conditions of the RFP, including attachments and documents incorporated by reference.

(a) Price Proposal - Completed RFP Payment Schedule

(b) RFP form PD 6 - “Solicitation, Offer and Award” - Complete “Offer” section and sign.

(c) RFP Reps/Certs-2 - “Representations/Certifications” – Complete and sign.

(d) Solicitation Amendments - Acknowledge all solicitation amendments (if applicable)

(e) Terms and Conditions Certification (PD 46 Form) - Complete and sign.

Your offer must communicate your consent to the terms and conditions in this RFP, its attachments, and documents incorporated by reference.

Complete the attached “Terms and Conditions” Certification, stating the degree to which you will meet the requirements of this solicitation.

Document any discrepancies, conflicts, or exceptions taken to the Technical Specification or any solicitation clauses as follows:

(i) Explanation of any discrepancies,

(ii) Explanation of any conflicts,

(iii) Explanation of any exceptions taken, and

(iv) Explanation of and supported advocacy rationale for any changes proposed to resolve discrepancies, conflicts, and/or exceptions.

2. Technical Proposal must include the following:

(a) Documentation of Overall System Design Capability

(b) Offerors shall provide detailed documentation demonstrating their capability to validate JLab’s vacuum vessel design using finite element analysis. The submission shall show conformity with all required technical specifications, a comprehensive understanding of Code‑compliance requirements, and proven reliability of all system components evaluated.

Documentation shall include analytical methods, FEM modeling approaches, assumptions, load cases, evaluation of non‑compliant conditions, and proposed minor corrective adjustments as permitted under the SOW. The Offeror shall clearly show how vessel geometry, materials, Instructions to Offerors & Evaluation Process Page 3 and finalized load conditions based solely on JLab’s preliminary fabrication drawings—are incorporated into the proposed analysis. If optional CAD geometry is used, its limitations and required adjustments shall be addressed.

(c) Documentation of Qualifications, Experience, and Past Performance

(d) The Offeror shall provide evidence of relevant qualifications and experience consistent with SOW. This includes demonstrating experience analyzing pressure or vacuum vessels with multiple externally loaded nozzles, using the finite element method, and performing similar engineering evaluations. The technical proposal shall include:

1. A minimum of three references for comparable work scopes;

2. Documentation that the Offeror possesses adequate facilities, software tools, analysis environments, and equipment to complete all required engineering tasks;

3. Evidence that the Offeror has the necessary key personnel to perform the work, including design, analysis, fabrication support, testing, inspection, and documentation, as identified in the Technical Specification;

4. Any supporting materials demonstrating proven reliability and readiness of analytical methods, personnel, and system components.

II. EVALUATION FACTORS FOR AWARD

A. General

TJNAF will award a subcontract based on Best Value/Trade-Off, considering (1) Price.,

(2) Technical Capability and (3) Past Performance. Technical capability is more important than price. Evaluations will be based on the criteria described below, consistent with the structure used in this RFP. To be eligible for award, Offerors must be responsive and responsible, adhering fully to the terms, conditions, and technical specifications of the solicitation. Any exceptions must be documented on the PD‑46 Terms & Conditions Certification. Failure to comply may render an offer unacceptable.

Capability will be assessed based on two categories: Responsible/Responsiveness and Technical, as outlined below:

1. Responsible/Responsiveness: TJNAF will consider an offer capable if it meets the terms and conditions of the RFP, including all attachments and documents incorporated by reference. Any exceptions to TJNAF specifications will be subject to review and approval before award. Exceptions, additional conditions, or omissions may render the offer ineligible. All exceptions must be documented on the PD 46 T&C Certification form.

Instructions to Offerors & Evaluation Process Page 4

If you (1) take exception to any of the terms and conditions of the RFP except as specifically authorized therein, (2) impose additional conditions, or (3) omit material information required by this RFP, then TJNAF may consider your offer to be unacceptable and you to be ineligible for subcontract award. All exceptions must be documented on the PD 46 T&C Certification form.

B. BASIS FOR AWARD (BEST VALUE)

The SURATech will make the Best Value/Trade-Off considering the weighted factors above.

1. Technical acceptability is required.

2. Lead Time receives primary emphasis.

3. Price receives significant consideration but is not the controlling factor when schedule advantages materially improve mission outcomes.

4. Past Performance may be decisive in close comparisons.

Award rationale will detail how color-coded ratings and documented strengths/weaknesses led to the final decision.

I. Factor (1) Technical (45 percent of Total Evaluation Rating) Offerors shall demonstrate extensive technical capabilities and experience in applying the finite element method (FEM) to analyze pressure and vacuum vessels, including vessels equipped with multiple externally loaded nozzles. SURATech will evaluate the extent to which the Offeror’s proposed approach, methods, tools, and qualifications meet or exceed the technical requirements identified in the Statement of Work.

Subfactor A-1: Technical Capability This subfactor assesses the Offeror’s demonstrated ability to perform all required technical tasks associated with validating JLab’s vacuum vessel design. Evaluation will consider the extent to which the Offeror:

• Achieves Code-compliant analysis of pressure and vacuum vessels, including components with multiple externally loaded nozzles.

• Provides accurate and validated finite element modeling consistent with vessel geometry, materials, and load conditions as defined in JLab’s fabrication drawings.

• Delivers an engineering analysis that identifies non-compliant conditions, supports iterative review cycles, and recommends minor corrective adjustments limited solely to resolving Code deficiencies.

• Provides all required documentation, including modeling assumptions, boundary conditions, material properties, stress evaluations, and conformance statements.

Instructions to Offerors & Evaluation Process Page 5

Submission Requirements

Offerors shall submit evidence demonstrating compliance with required specifications and performance metrics. This evidence may be provided in the form of a brochure link to examples of prior work on Offeror’s website, sample report from a similar project, and/or any means that Offeror feels demonstrates their capabilities.

Evaluation

TJNAF will assess the following:

a) Degree of conformance to required technical specifications.

b) Demonstrated understanding of complete system requirements.

c) Proven history of success using Finite Element Analysis to evaluate pressure and/or vacuum vessel designs against ASME code requirements.

II. Factor 2: Past Performance (25% of Total Evaluation Rating)

Submission Requirements

Offerors must provide references and documentation of previous similar works.

Significate Subfactor: prior experience

Evaluation

TJNAF will assess experience level, relevance of past suitability of technical capabilities. Highest ratings will be given to submissions that: (The currency and relevance of the information, source of the information, context of the data, and general trends in contractor’s performance

a) Demonstrate extensive experience with the finite element method (FEM).

b) Provide proven success by evaluating pressure or vacuum vessels using

FEM.

c) Demonstrate familiarity with laboratory practices where FEM is applied, including load-case development, Code evaluations, and corrective actions taken.

III. Factor 3: Price (30% of Total Evaluation Rating)

This factor evaluates the offeror’s history of performing comparable systems analysis using the finite element method (FEM).and their ability to support TJNAF.

Rating Plan – Offerors will be rated on the above factors and subfactors as per the below rating plan:

Instructions to Offerors & Evaluation Process Page 6

SUPERIOR (Numeric Score 4.0 to 5.0) Offeror’s proposal demonstrates excellent understanding of requirements, and significantly exceeds TJNAF’s minimum capability and/or performance standards. Proposal has exceptional strengths that provide a high degree of benefit to TJNAF and/or considerably less than average risk.

NOTABLY ABOVE AVERAGE (Numeric Score 3.0 to 4.0) Offeror’s proposal demonstrates good understanding of requirements and exceeds TJNAF’s minimum capability and/or performance standards.

Proposal has one or more strengths that provide some degree of benefit to TJNAF and there are few, if any, minor deficiencies that result in less than average risk.

AVERAGE (Numeric Score 2.0 to 3.0) Offeror’s proposal demonstrates acceptable understanding of requirements and meets TJNAF’s minimum capability and/or performance standards. The proposal provides few or no strengths; and may have minor deficiencies that result in an average risk to satisfactory performance.

MARGINAL (Numeric Score 1.0 to 2.0) Offeror’s proposal demonstrates shallow understanding of requirements, and only marginally meets capability and/or performance standards. Proposal has a number of minor deficiencies, or one or more major deficiencies that could impact offeror’s capability to provide acceptable performance, and cause TJNAF to undertake considerable risk.

POOR (Numeric Score 0.0 to 1.0) Offeror’s proposal fails to meet capability and/or performance standards.

Proposal has a gross deficiency or numerous other deficiencies which causes the Offeror’s proposal to be non-compliant in one or more area(s) and could cause TJNAF to undertake unreasonably high risks.

2. Price and Price Related Factors

Cost and total price will be evaluated by the Procurement Officer. Price will be numerically scored but will be weighed against the advantages of each offerors’s technical proposal to determine if the higher rated technical proposals merit the increased price differentials. If there are multiple offerors that are technically rated equal, price can be a determining factor.

TJNAF, at their sole discretion, may use a competitive range determination to eliminate offers from further consideration after initial proposal receipt due to significant technical deficiencies or excessive or unrealistic pricing when compared to TJNAF estimates or all other offers received.

3. Source Selection Decision

Instructions to Offerors & Evaluation Process Page 7

A comparative assessment of technical proposals that are in the competitive range will be evaluated and ranked from first to last by the TJNAF Technical Evaluation Team based on the weighted technical criteria stated in the sections above. The Offeror with the best overall Lowest Price Technically Acceptable proposal will be awarded the subcontract.

III. OTHER INSTRUCTIONS AND PROPOSAL CONDITIONS

A. DEFINITIONS

As used in this provision –

1. Wherever the term “bid” or “bidder” appears, it is referring to the offer or offeror.

2. "Discussions" are negotiations that occur after establishment of the competitive range that may, at the Procurement Officer's discretion, result in the offeror being allowed to revise its proposal."

3. “Offer” means “proposal” in negotiations.

4. "Proposal modification" is a change made to a proposal before the solicitation's closing date and time, made in response to an amendment, or made to correct a mistake at any time before award.

5. "Proposal revision" is a change to a proposal made after the solicitation closing date, at the request of or as allowed by a Procurement Officer as the result of negotiations.

6. “Solicitation” means “Request for Proposal (RFP)” or “Request for Quotations

(RFQ)” in negotiations.

7. "Time," if stated as a number of days, is calculated using calendar days, unless otherwise specified, and will include Saturdays, Sundays, and legal holidays. However, if the last day falls on a Saturday, Sunday, or legal holiday, then the period shall include the next working day.

B. SUBCONTRACT AWARD NOTES

1. TJNAF will award a subcontract resulting from this solicitation after a Best

Value determination is made in accordance with all factors outlined in the RFP package.

2. TJNAF may reject any or all offers if such action is in the public interest.

3. TJNAF may reject any offer that is deemed deficient in any critical capability area or an offer that is non-responsive to the Technical Requirements and

Instructions to Offerors & Evaluation Process Page 8

Terms and Conditions to the extent that the deficiency in capability or the non-responsiveness cannot be remedied within the time allotted for evaluation of the offers.

4. TJNAF may award a subcontract on the basis of initial offers received, without discussions. Therefore, your initial offer should contain your best terms, from a cost or price and technical standpoint.

5. TJNAF may accept any item or group of items of an offer, unless the offeror qualifies the offer by specific limitations. Unless otherwise provided in the Schedule, offers may be submitted for quantities less than those specified.

TJNAF reserves the right to make an award on any item for a quantity less than the quantity offered, at the unit cost or prices offered, unless the offeror specified otherwise in the offer.

6. Financial data neither submitted with an offer, nor representations concerning facilities or financing, will form a part of the resulting subcontract. However, if the resulting subcontract contains a clause providing for price reduction for defective cost or pricing data, the subcontract price will be subject to reduction if cost or pricing data furnished is incomplete, inaccurate, or not current.

C. AMENDMENTS TO SOLICITATIONS

1. If this solicitation is amended, then all terms and conditions that are not modified remain unchanged.

2. Offerors shall acknowledge receipt of any amendment to this solicitation by the date and time specified for receipt of offers.

D. SUBMISSION OF PROPOSALS

1. Offerors must submit their proposals in an electronic format as described in

Section L below.

2. Proposals shall be submitted as specified in the solicitation, and shall show:

(a) The solicitation number;

(b) The name, address, telephone and e-mail contact address of the offeror ;

(c) Names, titles, telephone numbers, and e-mail contact addresses of persons authorized to negotiate on the offeror's behalf with TJNAF in connection with this solicitation; and

(d) Name, title, and signature of person authorized to sign the proposal.

Proposals signed by an agent shall be accompanied by evidence of that agent's authority, unless that evidence has been previously furnished to the issuing office.

Instructions to Offerors & Evaluation Process Page 9

3. Offerors are responsible for submitting proposals, and any modification, or revisions by the date and time specified in the solicitation.

4. Unless otherwise specified in the solicitation, the offeror may propose to provide any item or combination of items.

5. Offerors shall submit proposals in response to this solicitation in English and in U.S. dollars, unless otherwise permitted by the solicitation.

6. Item samples, if required, must be submitted within the time specified for receipt of offers. Unless otherwise specified in the solicitation, these samples shall be (1) submitted at no expense to TJNAF, and (2) returned at the sender's request and expense, unless they are destroyed during pre-award testing.

7. Offerors are expected to examine the drawings, technical specifications, and all instructions in the RFP package. Failure to do so will be at the offeror’s risk.

8. Offers for services other than those specified will not be considered unless authorized by the solicitation.

9. Offerors must state a definite time for delivery for performance of services, unless otherwise specified in the solicitation.

E. LATE SUBMISSIONS

1. Any proposal, modification, or revision received by TJNAF after the designated time and date specified in the solicitation package is "late" and will not be considered unless the Procurement Officer determines that accepting the late offer would not unduly delay the acquisition.

2. A late modification of an otherwise successful proposal that makes its terms more favorable to TJNAF, will be considered at any time it is received and may be accepted.

3. If an emergency or unanticipated event interrupts normal TJNAF processes so that proposals cannot be received by the exact date and time specified in the solicitation, and urgent TJNAF requirements preclude amendment of the solicitation, the time specified for receipt of proposals will be deemed to be extended to the same time of day specified in the solicitation on the first work day on which normal TJNAF processes resume.

F. WITHDRAWALS, MODIFICATIONS AND REVISIONS TO PROPOSALS

1. Proposals may be withdrawn by the offeror at any time before award.

Withdrawals are effective upon receipt of notice by the Procurement Officer.

Instructions to Offerors & Evaluation Process Page 10

2. Offerors may submit modifications to their proposals at any time before the solicitation closing date and time, and may submit modifications in response to an amendment, or to correct a mistake at any time before award.

3. Offerors may submit revised proposals only if requested or allowed by the

Procurement Officer.

G. OFFER EXPIRATION DATE

Proposals in response to this solicitation will be valid for one hundred twenty

(120) days unless the offeror proposes a longer period.

H. RESTRICTION ON DISCLOSURE AND USE OF DATA

Offerors that include in their proposals data that they do not want disclosed to the public for any purpose or used by TJNAF or the United States Government except for evaluation purposes, shall—

1. Mark the title page with the following notation: "This proposal includes data that shall not be disclosed outside TJNAF or the United States Government and shall not be duplicated, used, or disclosed--in whole or in part--for any purpose other than to evaluate this proposal. If, however, a subcontract is awarded to this offeror as a result of--or in connection with--the submission of this data, TJNAF or the United States Government shall have the right to duplicate, use, or disclose the data to the extent provided in the resulting subcontract. This restriction does not limit TJNAF's or the United States Government’s right to use information contained in this data if it is obtained from another source without restriction. The data subject to this restriction are contained in sheets ”, and

2. Mark each sheet of data it wishes to restrict with the following notation: "Use or disclosure of data contained on this sheet is subject to the restriction on the title page of this proposal."

I. UNNECESSARILY ELABORATE PROPOSALS OR QUOTATIONS

Unnecessarily elaborate proposals beyond those sufficient to present a complete and effective response to this solicitation are not desired and may be construed as an indication of the offeror's lack of cost consciousness.

J. EXPLANATION TO PROSPECTIVE OFFERORS

Any prospective offeror desiring an explanation or interpretation of the solicitation, drawings, specifications, etc., must request it by the date provided in the Solicitation Form (PD 6) to allow a reply to reach all prospective offerors before the submission of their offers. Oral explanations or instructions given before the award of a subcontract will not be binding. Any information given a prospective offeror

Instructions to Offerors & Evaluation Process Page 11 concerning a solicitation will be furnished promptly to all other prospective offerors as an amendment to the solicitation, if that information is necessary in submitting offers or if the lack of it would be prejudicial to other prospective offerors.

K. WEB POSTING AND ACCESSING SOLICITATION DOCUMENTS

This requirement will be posted on the System for Award Management (SAM) website at SAM.gov and on the TJNAF solicitation portal at http://www1.jlab.org/ul/Bus_ops/ It is the offeror's responsibility to register and monitor the solicitation portal for amendments or revisions to the solicitation.

L. ELECTRONIC PROPOSALS

1. Electronic as used in this provision, means a proposal, revision or modification of a proposal, or withdrawal of a proposal that is transmitted to and received by TJNAF via electronic means.

2. Offers must be submitted via electronic means.

3. If any portion of the electronic submission is received by the Procurement

Officer and is unreadable to the degree that conformance to the essential requirements of the solicitation cannot be ascertained from the document –

(a) The Procurement Officer shall immediately notify the offeror and permit the offeror to resubmit the proposal;

(b) Time for resubmission shall be prescribed by the Procurement Officer after consultation with the offeror; and

(c) The resubmissions shall be considered as if it were received at the date and time of the original unreadable submission for the purpose of determining timeliness, provided the offeror complies with the time and format requirements for resubmission prescribed by the Procurement Officer.

http://www1.jlab.org/ul/Bus_ops/

ATTACHMENT 1

SURATech-26-R455678

STATEMENT OF WORK

Je�on Lab Document No.: 79220-S005

Revision No.: 2-iTITLE: Procurement Statement of Work for SNS 2K Cold Box

DATE: 08/05/2026

Vacuum Vessel Stress Analysis

�UTHOR: Brian Mastracci PROJECT: SNS Replacement 2K Cold Box

Procurement Statement of Work for

Spallation Neutron Source Subatmospheric Cold Box

Vacuum Vessel Stress Analysis

Signature Block:

Name Title Signature

Brian Mastracci Mechanical Engineer - Cryogenic Operations In DCG

Ritendra Bhattacharya Cryogenic Systems Deputy Department Head In DCG

Revision History:

Revision Summary of Changes Date

- Initial release. 08/05/2026

Aooroved: 08/06/2026: E-Sian ID: 634852: Sianed Bv: Checker: R. Bhattacharva: Aoorover 1: R. Bhattacharva: DCG: K. McDannold

1. INTRODUCTION

1.1. Objective

Thomas Jefferson National Accelerator Facility-Jefferson Laboratory (JLab) is seeking assistance performing a stress analysis and interpreting the results to demonstrate that a vacuum vessel design complies with the requirements of the ASME Boiler and Pressure Vessel Code, Section VIII, Division 2, Part 5.

1.2. Background

The subatmospheric, or 2.1 K, cold box at the Spallation Neutron Source (SNS) at Oak Ridge National

Laboratory (ORNL) generates the subatmospheric conditions necessary to maintain a bath of saturated liquid helium at 2.1 K inside of the facility's superconducting linear accelerator (SCL) cryomodules. It consists of a multi-stage cryogenic centrifugal (cold) compressor system and associated valves, piping, and instrumentation, packaged into a large insulating vacuum vessel. The cold compressor system is approaching end-of-life, requiring replacement of the entire 2.1 K cold box.

ORNL has partnered with Jlab to provide design and integration services for the 2.1 K cold box replacement project. Jlab will manage the procurement of major weldments and commercial supply components, and will perform the assembly and testing tasks in its on-site fabrication shop.

Jlab has completed the preliminary design of the insulating vacuum vessel and is required to provide documentation to ORNL validating the design. Compliance with the requirements of the ASME Boiler and Pressure Vessel Code, Section VIII, Division 2, Part 5 has been selected for this validation. Due to the complexity of the vessel and the applied loads, executing the analysis is beyond Jlab's current capabilities.

2. APPLICABLE DOCUMENTS

2.1. Applicable Documents

Document

ASME Boiler and Pressure Vessel Code Section II Part D

ASME Boiler and Pressure Vessel Code Section VIII Division 2

Jlab Procurement Specification 79220-S006

3D CAD Model

Jlab Drawing 79220-0224

Jlab Drawing 79220-0225

Jlab Drawing 79220-0226

Jlab Drawing 79220-0235

Jlab Drawing 79220-0236

Jlab Drawing 79220-0237

Jlab Drawing 79220-0238

Jlab Drawing 79220-0239

Jlab Drawing 79220-0240

Jlab Drawing 79220-0241

Jlab Drawing 79220-0242

Revision Provided

2023 No

No -

Yes

N/A Yes

Preliminary Yes

Preliminary Yes

Preliminary Yes

Preliminary Yes

Preliminary Yes

Preliminary Yes

Preliminary Yes

Preliminary Yes

Preliminary Yes

Preliminary Yes

Preliminary Yes

Aooroved: 08/06/2026: E-Sian ID: 634852: Sianed Bv: Checker: R. Bhattacharva: Aoorover 1: R. Bhattacharva: DCG: K. McDannold

Preliminary Yes

Preliminary Yes

Preliminary Yes

Preliminary Yes

Preliminary Yes

Preliminary Yes

Jlab Drawing 79220-0243

JLab Drawing 79220-0244

JLab Drawing 79220-0245

Jlab Drawing 79220-0246

Jlab Drawing 79220-0247

Jlab Drawing 79220-0250

4.1. Submittals

Subcontractor shall submit a report asserting compliance or non-compliance with the indicated Code requirements. Assumptions, methods, and analysis results shall be described in sufficient detail to support the compliance or non-compliance of each component.

5. DELIVERY SCHEDULE AND MILESTONES

The initial report shall be submitted no more than six weeks after contract award. For each iteration required, an updated analysis and revised report shall be completed and submitted within two weeks of receiving the modified design from JLab.

6. SUBCONTRACTOR MANAGEMENT

6.1. Meetings

Subcontractor shall participate in a brief review meeting upon submission of the initial report, and upon submission of any necessary revisions, in order to review the results of the analysis with Jlab.

This meeting may be held virtually.

6.2 Reports

An asserting compliance or non-compliance report and additional reports as requested.

Aooroved: 08/06/2026: E-Sian ID: 634852: Sianed Bv: Checker: R. Bhattacharva: Aoorover 1: R. Bhattacharva: DCG: K. McDannold

4. DELIVERABLES

3. WORK STATEMENT

The Subcontractor shall possess prior experience using the finite element method (FEM) to analyze pressure or vacuum vessels with multiple, externally loaded nozzles, and shall determine whether JLab’s vacuum vessel design is suitable to carry the loads described in (attachment 1) the procurement specifications, with all determinations made according to the methods and criteria of the ASME Boiler and Pressure Vessel Code (2023 Edition), Section VIII, Division 2, Part 5.

3.1 Scope of Work

The Subcontractor shall furnish all engineering services necessary to validate JLab’s vacuum vessel design. If any component of the vessel is determined to be out of compliance with applicable Code requirements, the

Subcontractor shall perform iterative evaluations as required. Any resulting design modifications shall be limited to minor adjustments necessary solely to achieve Code compliance. The overall vessel layout and associated loads have been finalized.

JLab’s preliminary fabrication drawings (Attachment 1) are provided and shall serve as the authoritative source for all vacuum vessel geometry and materials of construction. A 3D model of the vacuum vessel may be supplied for reference purposes; however, JLab does not warrant the suitability or accuracy of any CAD geometry for use in the

Subcontractor’s engineering analysis.

Transportation and lifting loads fall outside the Subcontractor’s scope and will be analyzed solely by JLab. These load conditions shall not be included in the Subcontractor’s analysis.

79220-S006_RevA

PROCUREMENT SPECIFICATION

SPALLATION NEUTRON SOURCE SUBATMOSPHERIC COLD BOX

VACUUM VESSEL STRESS ANALYSIS

Specification Number 79220-S006

August 12, 2026

Brian Mastracci

Mechanical Engineer

Ritendra Bhattacharya

Cryogenic Deputy Department Head

A Revision. BM RB RB - 8/12/26

REV. ECO# DESCRIPTION BY CHK. APP. APP. DATE

SUMMARY OF CHANGES FROM PREVIOUS REVISION:

III.A: Added design and operating temperature.

Approved: 08/13/2026; E-Sign ID: 635595; Signed By: Checker: R. Bhattacharya; Approver 1: R. Bhattacharya; DCG: K. McDannold

I GENERAL

A This specification provides the technical information needed to validate the Spallation

Neutron Source (SNS) Subatmospheric Cold Box vacuum vessel design.

B Design validation shall be accomplished using a finite element analysis according to the methods and criteria of the ASME Boiler and Pressure Vessel Code (2023 Edition), Section

VIII, Division 2, Part 5. No restriction is placed on the Subcontractor’s choice of software tools used to accomplish this task.

C Allowable stress values, where required, shall be those listed in the ASME Boiler and

Pressure Vessel Code (2023 Edition), Section II, Part D, Table 1A. This practice has been adopted by JLab in order to introduce an additional layer of conservatism and shall be followed by the Subcontractor for this work.

II GEOMETRY

The complete cold box installation is shown on the left side of Figure II. The vacuum vessel is isolated on the right side. The vacuum vessel provides thermal insulation for cryogenic piping and equipment, and structural support for the access platform. These images are provided for reference only.

Figure II. Cold box installation (left) and vacuum shell weldment (right).

A JLab’s preliminary fabrication drawings are provided, and shall be the official source of information regarding the vacuum vessel geometry and materials of construction. Nozzles are identified throughout this specification using the numeric identifiers assigned on the drawings.

Approved: 08/13/2026; E-Sign ID: 635595; Signed By: Checker: R. Bhattacharya; Approver 1: R. Bhattacharya; DCG: K. McDannold

B A 3D model of the vacuum vessel may be provided for reference. JLab makes no guarantee that the CAD geometry as provided will be suitable for use in Subcontractor’s analysis.

C Simplifying assumptions, such as modification or omission of inconsequential features, are permitted. Any such assumptions shall be justified in Subcontractor’s report.

D Coordinate systems used to describe the geometry and loads are defined below.

Subcontractor is not required to use the same coordinate systems in their analysis, however, the relative locations and directions of features and loads shall be preserved.

1 The global x-, y-, and z-axes are oriented as depicted in Figure II.D.1.

Figure II.D.1. Orientation of the global coordinate system axes.

Approved: 08/13/2026; E-Sign ID: 635595; Signed By: Checker: R. Bhattacharya; Approver 1: R. Bhattacharya; DCG: K. McDannold

2 Loads given in this specification are defined using a “nozzle local coordinate system.”

The origin of the local coordinate system for each nozzle is located at the center of the nozzle opening. The axes for each nozzle local coordinate system are aligned with those of the global coordinate system. Generic examples illustrating this definition are shown in Figure II.D.2.

Figure II.D.2. Examples depicting the location and orientation of nozzle local coordinate systems (red) with respect to the applicable nozzle geometry and global coordinate system (blue).

Approved: 08/13/2026; E-Sign ID: 635595; Signed By: Checker: R. Bhattacharya; Approver 1: R. Bhattacharya; DCG: K. McDannold

E The continuation of each nozzle is described in Table II.E. This information may be used to appropriately capture the mechanics at each nozzle opening. In some cases, it duplicates information already provided on the drawings.

Table II.E. Description of continuation at each nozzle.

Nozzle Continuation

01 Flat plate closure

02 Flat plate closure

03 Flat plate closure

04 Flat plate closure

05 Flat plate closure

06 Flat plate closure

07 Flat plate closure

08 Flat plate closure

09 Flat plate closure

10 Flat plate closure

11 Flange

12 Flange

13 Flat plate closure

14 Flat plate closure

15 Flat plate closure

16 Flat plate closure

17 Flat plate closure

18 Pipe, 4 NPS SCH10S

19 Flat plate closure

20 Flat plate closure

21 Flange

22 Flat plate closure

23 Flange

24 Flange

25 Flange

26 Pipe, 1-1/2 NPS SCH10S

27 Flange

28 Flange

29 Pipe, 14 NPS SCH10S

30 Flange

31 Pipe, 3-1/2 NPS SCH5S

Approved: 08/13/2026; E-Sign ID: 635595; Signed By: Checker: R. Bhattacharya; Approver 1: R. Bhattacharya; DCG: K. McDannold

III LOADS

The following loads will be applied to the vessel and shall be accounted for in the analysis.

Simplifying assumptions, such as omission of inconsequential loads, are permitted. Any such assumptions shall be justified in Subcontractor’s report.

A Design and operating pressures and temperatures are as stated below.

1. The design and operating internal pressure is -15 psig (i.e., full vacuum).

2. The design and operating temperature is 100 °F and will be uniform across the vessel.

B Dead weight of the vessel components shall be determined based on the provided geometry and material specifications. The vessel will support additional dead weight as described below.

1. The share of the access platform dead weight borne by the vessel is 4,000 lb. This load shall be evenly distributed across the eight platform support lugs.

2. Nozzles #1-10 and 13 are used for attachment of equipment. The center of gravity with respect to the applicable nozzle local coordinate system, and the weight of the equipment, is listed in Table III.B.2.

Table III.B.2. Weight and center of gravity of equipment attached to vessel nozzles.

Nozzle CG and Weight of Attached Equipment x (in) y (in) z (in) W (lb)

01 0 0 -0.53 1099

02 0 0 2.98 671

03 0 0 3.86 618

04 0 0 5.05 507

05 0 0 5.05 507

06 0 0 0 238

07 0 0 0 238

08 0 0 0 65

09 0 0 0 369

10 0 0 0 369

13 0 0 0 65

Approved: 08/13/2026; E-Sign ID: 635595; Signed By: Checker: R. Bhattacharya; Approver 1: R. Bhattacharya; DCG: K. McDannold

3. Nozzle loads due to the weight of attached piping are listed in Table III.B.3. The point of application is the origin of the nozzle local coordinate system.

Table III.B.3. Nozzle loads due to the weight of attached piping.

Forces and Moments

Fx (lb) Fy (lb) Fz (lb) Mx (ft-lb) My (ft-lb) Mz (ft-lb)

01 4 -10 -203 45 46 -22

02 -1 0 -118 83 -12 -3

03 0 1 -86 38 -55 -2

04 0 0 -72 -4 72 -1

05 0 1 -74 -30 -23 -1

06 4 -1 -71 1 10 -2

07 0 -1 -68 6 5 -2

08 0 0 -22 0 -1 0

09 10 -5 -180 38 109 -13

10 5 -2 -200 17 63 -4

11 -1 0 -50 -3 8 0

12 1 0 -12 0 0 0

13 -1 0 -24 0 0 0

14 0 0 -3 0 0 0

15 1 0 -2 0 -1 0

16 0 0 -6 1 1 0

17 N/A – Instrumentation Tubing Feedthrough

18 -2 0 -26 1 7 1

19 0 0 -2 0 0 0

20 0 0 -4 0 0 0

21 N/A – Overpressure Relief Device

22 N/A – Instrumentation Tubing Feedthrough

23 N/A – Instrumentation Wiring Feedthrough

24 N/A – Instrumentation Wiring Feedthrough

25 N/A – Access Ventilation

26 0 0 -2 0 0 0

27 3 4 -98 25 -33 1

28 N/A – Personnel Access

29 -7 3 -42 -14 -30 0

30 -2 -4 -212 43 -175 4

31 N/A – Vacuum Service Valve

Approved: 08/13/2026; E-Sign ID: 635595; Signed By: Checker: R. Bhattacharya; Approver 1: R. Bhattacharya; DCG: K. McDannold

C The share of the access platform live weight borne by the vessel is 15,000 lb. This load may be evenly distributed across the eight platform support lugs.

D The vessel may experience occasional loads as described below.

1. Design acceleration magnitudes due to seismic events are listed in Table III.D.1.

Directions shall be those which result in the worst-case loading on the vessel when combined with other applicable loads.

Table III.D.1. Design seismic acceleration magnitudes.

Vertical Seismic Acceleration (g) Lateral Seismic Acceleration (g)

0.137 0.214

2. Nozzle #25 supports the anchorage for an active fall protection system and the load resulting from a fall arrest shall be considered. The magnitude and point of application with respect to the nozzle local coordinate system are given in Table III.D.2. There is no vertical component to this load, and the lateral direction shall be that which results in the worst-case loading on the vessel when combined with other applicable loads.

Table III.D.2. Fall arrest load.

Point of Application and Magnitude x (in) y (in) z (in) Magnitude (lb)

25 0 0 4 5000

Approved: 08/13/2026; E-Sign ID: 635595; Signed By: Checker: R. Bhattacharya; Approver 1: R. Bhattacharya; DCG: K. McDannold

E Thermal expansion and contraction of the attached piping in various operating modes will exert additional loads on the vessel nozzles as described below.

1. Operating Mode 1 is expected to occur five times or less during the vessel lifetime. The associated nozzle loads due to piping expansion and contraction are given in Table

III.E.1. The point of application is the origin of the nozzle local coordinate system.

Table III.E.1. Nozzle loads due to thermal expansion and contraction of attached piping for Operating Mode 1.

Nozzle Forces and Moments

Fx (lb) Fy (lb) Fz (lb) Mx (ft-lb) My (ft-lb) Mz (ft-lb)

01 2 -1 -3 -7 -1 17

02 -1 2 -1 12 3 -1

03 2 0 0 2 -10 -1

04 1 0 0 -4 0 0

05 2 -2 0 -9 -10 0

06 4 -7 -12 -28 -10 -3

07 -7 9 18 21 18 1

08 2 0 3 -1 -4 0

09 -7 -17 4 -101 35 -23

10 23 8 22 40 -42 -7

11 2 -2 -2 -15 -15 0

12 -1 -3 -1 -8 1 -1

13 1 -2 0 -5 -2 0

14 0 0 0 1 0 0

15 0 0 1 0 0 -1

16 0 0 1 -1 -1 0

17 N/A – Instrumentation Tubing Feedthrough

18 6 0 -5 -10 -2 0

19 0 0 1 0 0 0

20 0 0 1 0 0 0

21 N/A – Overpressure Relief Device

22 N/A – Instrumentation Tubing Feedthrough

23 N/A – Instrumentation Wiring Feedthrough

24 N/A – Instrumentation Wiring Feedthrough

25 N/A – Access Ventilation

26 4 4 -14 5 12 5

27 5 2 -21 8 7 -7

28 N/A – Personnel Access

29 76 -4 -143 -150 -133 -33

30 5 -2 15 2 38 -8

Approved: 08/13/2026; E-Sign ID: 635595; Signed By: Checker: R. Bhattacharya; Approver 1: R. Bhattacharya; DCG: K. McDannold

2. Operating Mode 2 is the normal operating mode and the vessel will spend the majority of its lifetime in this mode. The associated nozzle loads due to piping expansion and contraction are given in Table III.E.2. The point of application is the origin of the nozzle local coordinate system.

Table III.E.2. Nozzle loads due to thermal expansion and contraction of attached piping for Operating Mode 2.

Nozzle Forces and Moments

Fx (lb) Fy (lb) Fz (lb) Mx (ft-lb) My (ft-lb) Mz (ft-lb)

01 -14 -11 -35 -39 -8 -183

02 7 -17 4 -95 -22 4

03 -18 0 -2 -15 84 11

04 -11 6 2 31 -1 -3

05 -16 14 -12 57 75 3

06 -27 46 80 175 81 1

07 58 -85 -178 -210 -175 -19

08 -1 35 114 39 -1 12

09 -58 197 -114 987 369 265

10 -192 -12 301 157 1267 65

11 -26 0 -56 -19 159 -8

12 1 -4 0 -11 -3 0

13 4 -4 2 -12 -9 2

14 0 0 0 1 0 0

15 13 -10 18 -6 -7 1

16 3 -5 44 -8 -4 0

17 N/A – Instrumentation Tubing Feedthrough

18 22 1 12 -5 -66 -3

19 1 2 6 -1 2 -1

20 0 4 7 4 -1 0

21 N/A – Overpressure Relief Device

22 N/A – Instrumentation Tubing Feedthrough

23 N/A – Instrumentation Wiring Feedthrough

24 N/A – Instrumentation Wiring Feedthrough

25 N/A – Access Ventilation

26 4 4 -14 5 12 5

27 5 2 -21 8 7 -7

28 N/A – Personnel Access

29 76 -4 -143 -150 -133 -33

30 5 -2 15 2 38 -8

Approved: 08/13/2026; E-Sign ID: 635595; Signed By: Checker: R. Bhattacharya; Approver 1: R. Bhattacharya; DCG: K. McDannold

3. Operating Mode 3 is expected to occur five times or less per year for the lifetime of the vessel. The associated nozzle loads due to piping expansion and contraction are given in Table III.E.3. The point of application is the origin of the nozzle local coordinate system.

Table III.E.3. Nozzle loads due to thermal expansion and contraction of attached piping for Operating Mode 3.

Nozzle Forces and Moments

Fx (lb) Fy (lb) Fz (lb) Mx (ft-lb) My (ft-lb) Mz (ft-lb)

01 1 -8 -21 -34 -6 -44

02 -1 2 0 12 3 -1

03 2 0 0 2 -10 -1

04 1 0 0 -4 0 0

05 3 -2 2 -8 -14 0

06 -27 18 199 -27 -123 22

07 27 -8 -26 -12 -67 9

08 -32 -20 -335 46 18 -8

09 -129 49 -144 129 828 91

10 -157 22 740 510 1508 76

11 8 5 -128 -55 -186 0

12 10 25 -67 35 -12 2

13 -14 9 316 96 -14 7

14 1 2 1 4 -1 1

15 -23 9 -26 1 15 4

16 -3 4 -23 4 4 0

17 N/A – Instrumentation Tubing Feedthrough

18 6 -1 -5 -11 -4 -1

19 0 0 1 0 0 0

20 0 3 3 7 0 0

21 N/A – Overpressure Relief Device

22 N/A – Instrumentation Tubing Feedthrough

23 N/A – Instrumentation Wiring Feedthrough

24 N/A – Instrumentation Wiring Feedthrough

25 N/A – Access Ventilation

26 4 4 -14 5 12 5

27 5 2 -21 8 7 -7

28 N/A – Personnel Access

29 61 -131 159 806 -124 125

Approved: 08/13/2026; E-Sign ID: 635595; Signed By: Checker: R. Bhattacharya; Approver 1: R. Bhattacharya; DCG: K. McDannold

4. Operating Mode 4 is expected to…