Attachment_D_-_Dane_County_PSA_Vessels.pdf

The document is a detailed engineering schematic for a PSA (Pressure Swing Adsorption) vessel for the Dane County Renewable Natural Gas (RNG) Plant in Wisconsin, created by Smith Tank & Steel, Inc. The technical drawing provides a comprehensive view of a large circular vessel with multiple perspectives including orientation, elevation, and detailed welding specifications. The schematic includes specific instructions for insulation, noting to "Insulate entire vessel shell up to nozzles and support legs" and to apply "Jacket insulation over flange connection, overlapping to shed water off flange and underside."

The drawing includes technical specifications for various weld types, material details, and precise dimensional measurements. Red annotations highlight key insulation requirements, and the document is dated 9/20/18, with a signature in the top right corner. The technical drawing provides engineering-level details about vessel construction, including shell design, support structures, and insulation strategies, which align with the Dane County RNG Plant's industrial insulation project described in the associated contract opportunity documentation.