Depatment of Public Utility (DPU) / CO2 Storage Tank Service

To establish an Indefinite Quantity Agreement for Liquid CO-2 Storage Tank Inspection, Preventive Maintenance and Service, including parts, on an as needed basis. The estimated dollar amount to be spent on this agreement is $50,000.00. This is an estimate of the annual needs of the City under this Agreement and are for bidding purposes only. This estimate is not to be construed as representing an actual order for that amount, or a guarantee that any minimum amount will actually be purchased. Subsequent to the acceptance of an offer, individual written purchase orders may be issued as needed by the City to purchase items listed herein during the term of the agreement. At no time shall the obligation of the City agency exceed the dollar amount of an associated purchase order. The Agreement will expire on 10/31/23. Any available funds not obligated by the City by means of a Purchase Order on or prior to that date shall be cancelled after that date. CARBON DIOXIDE STORAGE UNIT ANNUAL INSPECTION AND MAINTENANCE SERVICES Service Visit includes the following: Inspection and Evaluation of the refrigeration, vaporizer, vapor heating and external piping systems, Assessment of the integrity of equipment control panels, pressure switches, contactors, the condition of wire connections and the operation of pressure switches, Leak Checks of CO2 piping, pH probes will be calibrated and tested. For WTP's with automatic pH control panels, the complete control system will be tested and tuned including: Checking the control parameters: Valve controller program, Transit time, Dead band, Valve Response, Disturbing the system to verify system stability The equipment includes, but is not limited to: The Dublin Road Water Plant has two (2) 120 ton units: Two (2) Tomco2 1-Job #WT-658, WT-1408. 120 ton capacity carbon dioxide storage units. Each unit is equipped with a low temperature air-cooled Copeland refrigeration condensing unit charged with refrigerant R-404A and an external electrically heated vaporizer. The Parsons Avenue Water Plant has three (3) 50 ton units: Three (3) Tomco-Job #WT-1444; 50 Ton capacity carbon dioxide storage units. Each unit is equipped with a low temperature air-cooled Copeland refrigeration condensing unit charged with refrigerant R-404A and an external electrically heated vaporizer. The Hap Cremean Water Plant has two (2) 100 ton units: Two (2) Tomco2 1-Job #WT-586, WT-1380. 100 Ton capacity carbon dioxide storage units. Each unit is equipped with a low temperature air-cooled refrigeration condensing unit charged with refrigerant R-404A and an external electrically heated vaporizer. Prices shall be FOB Destination Freight Prepaid & Allowed unless otherwise specified. For all lines please provide the unit cost as requested. These lines are representative items and the quantities are estimates that will be used for evaluation purposes.

Division 01 -	General Requirements.
Division 10 -	Specialties.
Division 11 -	Equipment.