Cryo SNS Cold Box Shell Analysis

Thomas Jefferson National Accelerator Facility (TJNAF) seeks an engineering firm to perform a detailed validation of the Sub‑atmospheric Cold Box vacuum vessel design for the Spallation Neutron Source (SNS). The work will involve reviewing design specifications, conducting finite‑element or analytical assessments, and delivering a comprehensive validation report that confirms compliance with TJNAF’s performance and safety criteria. The award will be a firm‑fixed‑price subcontract selected through a Best Value/Trade‑Off evaluation, with the intent to award by 30 September 2026. • Scope: Engineering analysis and validation of Cold Box shell/vacuum vessel design. • Deliverables: Validation report, supporting calculations, and any recommended design modifications. • Contract Type: Firm‑fixed‑price, Best Value/Trade‑Off selection. • Award Timeline: Intended award no later than 30 Sept 2026. • Required Capability: Demonstrated experience in cryogenic vacuum vessel engineering and familiarity with SNS or similar accelerator components.