LLNL Building 321 - Materials Fabrication Shop

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The Building 321 Complex, the Engineering Technology Complex, is located in the southwest
quadrant of the Livermore Site. The primary function of these facilities is the fabrication of parts and assemblies to meet the needs of LLNL programs.

This complex includes Building 321, Materials Fabrication (149,489 sq. ft), Building 322, Plating Shop (5,822 sq. ft), Building 322A, Metal Finishing Facility Annex 340 (sq. ft), Building 329, Laser Weld Shop 5,214 (sq. ft),Building T3203, Materials Fabrication (632 sq. ft), andBuilding T3204, Materials Fabrication (647 sq. ft).

Building 321 consists of several wings. Building 321A contains a large high-bay machine shop. There are numerous machine tools in this bay, and they vary in size from large computer numerical control mills and lathes to small conventional machines. Building 321A contains shops and offices, including the Optics Facility. The Heat Treat Facility and Spin/Press Forming Shop have large pieces of equipment used for their respective operations as well as furnaces heated by electric elements. Building 321A also includes an electronics circuit board fabrication process.

Building 321B contains electronics fabrication, powder coating, and silk screening operations.

Building 321C contains offices, shops, and storage areas. The Numerical Control Shop is equipped with computer numerical control mills and lathes and has electrical discharge machining capabilities. The water jet cutting machine uses high-pressure water and garnet to cut a variety of nontoxic materials including metals, ceramics, and plastics. A vault is also included in Building 321C where classified hardware and accountable materials are stored.

Building 321D holds the circuit board fabrication and wave-soldering machine. Building 321E is the main mechanical equipment room for the Building 321 Complex. Building 322 is a plating shop used to finish metal surfaces with a wide variety of protective and functional surface coatings. It contains a large number of tanks of chemical solutions and rinsewater for processing parts.