SLAC SSRL 10S Alcove Shielding Replacement

2026-11-03

THIS POSTING IS FOR " SOURCES SOUGHT ONLY ." PLEASE DO NOT SUMBIT BIDS . While the DRAFT RFP package has been included with this post , the RFP has NOT yet been released . Interested Vendors should express their interest on the Interested Vendors List through this SAM . GOV posting or emailing the procurement specialist . SSRL 10S Alcove Shielding Replacement – Build portion of Design - Bid - BuildThe SLAC National Accelerator Laboratory ( SLAC ) is a U . S . Department of Energy , Office of Science ( SC ) laboratory that supports a large national and international community of scientific users performing cutting - edge research in support of the Department ’ s mission . Minimum QualificationsThe Offeror ’ s General Contractor ’ s license has not been revoked within the past five ( 5 ) years . The Offeror ’ s company has not been debarred within the past five ( 5 ) years from working on any U . S . government contracts / subcontracts . Neither the Offeror ’ s firm , nor any of its owners or officers have been convicted of a crime involving the awarding of the contract of a government ( U . S . Federal , State , and City ) construction project , or the bidding or performance of a government contract . Offeror must have an established local office for a minimum of 2 years in the San Francisco Bay Area . The San Francisco Bay Area is defined as the following 10 counties : Santa Clara , San Mateo , San Francisco , Alameda , Contra Costa , Marin , Napa , Sonoma , Solano , and Santa Cruz CountiesThe Offeror must list any U . S . projects within the past five ( 5 ) years that have been terminated for default . The Offeror ’ s company cannot have any U . S . projects within the past five ( 5 ) years that have been terminated for default . The Offeror must have previous experience working at Department of Energy ( DOE ) and / or Department of Defense ( DOD ) FacilitiesScopeThe SSRL 10S Alcove Shielding Replacement project consists of demolition and reconstruction of the concrete shielding structure at the 10S straight section of the SPEAR ring to : Accommodate a new insertion device . Enable out - of - alcove beam extraction . Bring shielding structures up to current seismic and DOE 420 . 1C requirements . Prepare the alcove for future beamline installation . All construction must occur during the 2026 SSRL summer shutdown ( July 2026 – September 2026 ) to avoid impact to ongoing SPEAR operations . Project consists of the modification and reconstruction of the existing SSRL 10S Alcove section to support installation of a new insertion device for the SPEAR ring . The project will expand the current alcove footprint using new cast - in - place concrete shielding walls and removable roof blocks and aligning the area with current seismic and structural design standards . Major project elements include : Structural & Shielding Work : Demolition of existing concrete walls , ceiling panels , and roof shielding blocks , followed by construction of new cast - in - place concrete shielding walls and removable roof blocks designed to meet current seismic criteria . Increased alcove footprint and ceiling height to accommodate the upcoming insertion device and required operational clearances . Integration of new embedded steel and support elements within the shielding walls for future utilities , cable routing , and safety system installations . Construction and installation of a new concrete rolling block door to maintain radiation shielding and allow equipment access . Waterproofing of roof - block gaps and flashing at modified exterior interfaces . Electrical Systems : Modification and relocation of existing electrical systems , including power distribution , lighting , and backup generator connections . Temporary generator installation , if required , to maintain operations during the period in which the existing generator must be removed for construction access . Removal of all existing alcove lighting during demolition and reinstallation of new lighting after the expansion is complete . Relocation or temporary storage of utilities to maintain service continuity during construction . Architectural & Building Modifications : Minor exterior and interior architectural modifications to Building 131 to support access to the shielding enclosure and accommodate changes in shielding wall and roof elevation . Removal of an existing door and infill of the wall with materials matching existing adjacent conditions . Protection of the experimental floor , SPEAR ring components , and all exposed SSRL equipment during construction activities . Safety & Fire Systems : Removal and relocation of the red manual fire alarm pull station currently located inside the existing alcove door , to be reinstalled per code after reconstruction . Coordination with SLAC Fire Marshal and SSRL safety groups to ensure all life - safety systems remain compliant during phased construction .

California

2026-03-27