Lincoln Electric System Procureware #140-26

DEC replacement plate pack and NBR gaskets for Alfa Laval AQ10-FG heat exchanger

The City of Lincoln, through District Energy Corporation (DEC), is seeking replacement components for an Alfa Laval AQ10-FG free-cooling heat exchanger. - Buyer: District Energy Corporation (DEC), Procurement Department; City of Lincoln, Nebraska. The equipment serves DEC West Haymarket. - OEM: Alfa Laval — the existing AQ10-FG plate-and-frame heat exchanger, serial number 30113-95000, is the compatibility reference. - Requested items: Replacement plate pack matching grouping 1*(3H+98ML)/1*(3H+98MH), plus glued-on NBR gaskets. No purchase quantities are specified. - Plate requirements: 304 or 316 stainless steel, 0.40–0.50 mm nominal thickness, with each offered material/thickness combination priced as a separate option. The drawing identifies the existing plates as 304 stainless steel, 0.40 mm thick. - Quality and delivery requirements: Provide positive material identification (PMI) records for 10% of the plates before shipment, using a calibrated handheld X-ray fluorescence analyzer; chemistry must meet applicable ASTM limits for the selected grade. Plate manufacturers must have heat-exchanger plate experience and provide similar-project references if requested. Deliver to DEC at 550 P Street, Lincoln, Nebraska. - Drawing reference: A drawing associated with The Waldinger Corporation identifies heat exchanger HX-1, part number 53682-10, with 304 plates, 0.40 mm thickness, 3,245 sq. ft. heating surface, and water on both sides. It specifies construction to applicable ASME Code requirements. This is reference equipment information, not a separately stated purchase quantity. - Other named companies: Deltek, Elite Textile Trading LLC, Hayes Mechanical, Lincoln Builders Bureau, Mechanical Sales, Inc., North America Procurement Council, Inc. PBC, PRVN Consultants, Inc., Rieckman Engineered Products, LLC, and The Waldinger Corporation. The solicitation does not identify an awardee.

Description

District Energy Corporation is requesting bids for replacement plates and gaskets for an Alfa Laval AQ10-FG plate-and-frame heat exchanger used in a water-to-water free-cooling application. The replacement plate pack must fit the existing exchanger and match its specified plate grouping, with glued-on NBR gaskets. Plates may be 304 or 316 stainless steel and must be between 0.40 mm and 0.50 mm thick; bidders may submit different material and thickness combinations as separate options. The work includes delivery of all components to 550 P St, Lincoln, Nebraska 68528, and requires positive material identification test records for 10% of the plates before shipment.

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