Request for Proposals Dilution Refrigeration Systems Amendment 1

REQUEST FOR PROPOSAL (RFP)

RFP No.: PR452359

AMENDMENT 01 REQUEST FOR PROPOSAL

AMENDMENT 01

Date: 11/03/2026
RFP No.: RFP- PR452359 Dilution Refrigeration Systems
Description: This Amendment makes the following changes: CHANGE: Article 2. RFP Information
From: Offers Due By: 11/09/2026 at 5 p.m. EDT
To: Offers Due By: 11/16/2026 at 5 p.m. EST
ADD: Article 3. List of RFP Attachments
Attachment L – Bidder's Questions 11-03-2026
All other terms and conditions remain unchanged.

CONFORMED REQUEST FOR PROPOSAL (RFP)

1.

INTRODUCTION

Date: 10/19/2026

RFP No.: PR452359

RFP Description: Dilution Refrigeration Systems
Subject: RFP for the ORNL Neutron Scattering Division
In Response Refer to: RFP No. PR452359 Dilution Refrigeration Systems ORNL Procurement Officer: Bill Mitchum
Phone: (865) 341-2745
Email: [email protected]
Oak Ridge National Laboratory (ORNL) is a US Department of Energy (DOE) science and energy laboratory, conducting basic and applied research to deliver transformative solutions to compelling problems in energy and security. ORNL is managed and operated by UT-Battelle, LLC (Company). ORNL’s diverse capabilities span a broad range of scientific and engineering disciplines, enabling the Laboratory to explore fundamental science challenges and to carry out the research needed to accelerate the delivery of solutions to the marketplace. The Company is pleased to invite your firm, herein referred to as “Offeror,” to submit a proposal in support of the subject effort, as outlined in the attached Statement of Work or Specification and/or Technical Direction attached. The Company reserves the right to update this RFP by amendment prior to date of award. The Offeror’s proposal shall be prepared in accordance with the information provided in this RFP. Specific responses to the Company’s requirements are necessary to enable the Company to evaluate Offeror’s understanding of and capability to accomplish the stated objectives. Throughout the proposal, the Offeror shall provide sufficient detail to substantiate the

Request for Proposal

BSD-CS-2282 (Rev.2)

October 1, 2025

REQUEST FOR PROPOSAL (RFP)

RFP No.: PR452359

validity of all stated claims, comments, or positions. All proposed concepts must be shown to be technically feasible and achievable within the allotted time limitations, and all performance and schedule requirements must be shown to be realistic. The response shall correspond to the requirements of this RFP, unless otherwise specified in writing by the