41 -- FISH CHILLERS FOR ANN ARBOR MI SCIENCE CENTER

Notice Date

July 18, 2001

Contracting Office

U.S. Geological Survey, OAG-MS205, 12201 Sunrise Valley Drive, Reston, VA 20192

ZIP Code

20192

Solicitation Number

01ERSS0016

Response Due

August 31, 2001

Point of Contact

Mitchell J. Thomas, Contracting Officer (703) 648-7357

E-Mail Address

Click here to contact the Contracting Officer, Mitchell (mjthomas@usgs.gov)

Description

The U.S. Geological Survey has a requirement for the replacement of two water chiller packages for chilling well water for fish at the Great Lakes Science Center (GLSC), Ann Arbor, with two new complete chiller packages (Trane or equal) that are energy efficient, user friendly, and provide the GLSC with various chilling capacities at different water flow rates. These chillers contribute to the Science Center's mission of diversified research. The present chillers must be demolished and removed from the Center. Refrigerant shall be removed using EPA standards. Glycol pumps and motors for chilled water loop shall be replaced. Cooling tower pumps and motors (Government-furnished equipment) for condenser water shall be removed and replaced. These will be replaced by two new chiller packages, custom made for the GLSC application, including any and all piping and valves, power wiring, control wiring and insulation, new environmentally friendly refrigerant which has no phase out date and includes a manufacturer's warranty on all new equipment. Tonage, electrical requirement, evaporators, condensers, and compressors shall work with the GLSC's present heat exchanger and its utility systems to provide a working system. Contractor shall replace expansion tank and piping to and from chilling system. If necessary to meet design specifications and provide a complete working chilling system, contractor shall replace one, or both heat exchangers, three-way valves, and any and all associated piping, valves, fittings and pneumatics to assure chilling requirements are met. Contractor shall verify and correct, if necessary, any and all electric service to each chiller package, all pumps, motors, etc. Service from main electric room to individual equipment shall be properly sized and fused and in good working condition. Criteria for acceptance of chillers will include two complete working chiller packages with manufacturers warranty that can be connected to the GLSC present heat exchangers and be operated separately or in combination, and provide chilling capacity under varying and diversified conditions and water flow rates. Each individual chiller package shall have the capacity for the following by itself and also be capable of running simultaneously with the other, if necessary. Fish holding delivered water temperature may vary from a high of 12 C and shall be able to be chilled down to a low of 5 C, and anywhere in between, including tenths of degrees under varying delivered water flow rates of 473.175 liters (125 gallons) per minute down to 94.635 liters (25 gallons) per minute. This is mandatory. The chiller packages shall operate under these conditions without excessive wear and tear on the chillers. The need for diversified water flow rates and temperatures change constantly. The requirement may be 20 gpm at 8 C for a year then change to requiring 100 gpm at 6 for a year. The chiller packages shall have loading and unloading capacity to handle this requirement. The chiller packages shall also connect to the present cooling tower and be compatible with the size and flow rates through the tower. Chilled water delivered to the fish lab at whatever setting the Government desires for present research shall not vary under normal conditions and circumstances greater than 1 C. Three copies of manufacturers drawings, specifications, equipment manuals, wiring designs, etc., shall be provided to the GLSC. Refrigerant shall be EPA approved and easily obtainable. Instruction on chiller packages shall be provided, hands on, with proper training in the operation of the equipment. Both chiller packages shall be connected to the Center's emergency power backup system, and shall be tested to prove operability when connected to this system. If necessary to meet design specifications and provide a complete working chilling system, contractor shall replace one or both heat exchangers, three-way valves, and any and all associated piping, valves, fittings and pneumatics to assure chilling requirements are met. Contractor shall verify and correct, if necessary, any and all electric service to each chiller package, all pumps, motors, etc. Service from main electric room to individual equipment shall be properly sized and fused and in good working condition. A site visit will be announced at a later date. Vendors are strongly urged to attend this site visit. Contact the Contracting Officer for further details. Contractor shall complete the work within 100 days of award of the contract. See numbered Notes 1 and 26.

Record

Loren Data Corp. 20010720/41SOL001.HTM (W-199 SN50S2C1)