GSA, PBS, Property Management (4PMP),Suite 2500,401 West Peachtree St. NW,At lanta,GA 30365-2550

N -- REMOVE, INSTALL AND DESIGN CHILLERS SOL GS-04P-96-EWC-0068 DUE 061796 POC Contact,Lawana Hornsby,404/331-5844,Contracting Officer,Elizabeth Worley,40 4/331-3279 GSA intends to acquire through competition a contract to Design, Build and Install a chiller at the R.G. Stephens Federal Building, in Athens, GA. The Design/Build (D/B) contractor shall replace liquid chillers and associated air conditioning and chilled water system components in the building specified. The D/B contractor shall make modifications and additions to the buildings electrical distribution system as required to accommodate the new mechanical equipment. The contractor shall also provide related management and inspection services, training of operation and maintenance personnel and warranties/guarantees. The building will be kept in operation and occupied during the replacement work. Essential cooling, heating, and other building services shall be maintained for the duration of the work. The work required for the contract will include but, is not limited to the following: REMOVAL: One existing chiller, all pumps and piping as required to facilitate installation of a new chiller, all valves, pumps, purger units and motors of pumps shall remain the property of the Government. Existing Chiller is Westinghouse size 10'Lx3'Wx5'H. INSTALLATION: One new chiller. The chiller shall be a Centrifugal chiller. Other chiller (Existing rotary chiller presently installed to serve with existing pumps) shall be standby. Existing pumps for rotary chiller shall be taken out and new pumps shall be used for rotary chiller. The new chiller shall be rated to supply 42 DEG F chilled water and have electrical consumption of not more than 0.65 KW/TON for Cetrifugal chiller. Electrical rating is 460V/3PH/60HZ. DESIGN CRITERIA: Outdoor air design criteria for chiller and associated equipment sizing shall be based on weather data tabulated in the latest edition of the ASHRAE Handbook Fundamentals. Summer design conditions must be based on the 2.5 percent column dry bulb temperature with its mean coincident wet-bulb temperature with its mean coincident wet-bulb temperature in the ASHRE Climatic conditions table. Base outdoor ventilation air design cooling (and heating) loads for chiller and associated system sizing purposes on outdoor air ventilation rates which comply with ASHRAE Standard 62 ''Ventilation for Acceptable Indoor Air Quality'' (latest edition). Where ASHRAE 62 ventilation rates are not incorporated, chiller cooling capacity for ASHRAE 62 ventilation air cooling loads ''shall be provided to allow for future increase of ventilation rates to meet ASHRAE 62 criteria. Base indoor design conditions for sizing chillers and associated equipment on ASHRAE Standard 55 ''Therman Environmental Conditions for Human Occpancy'' (latest edition). Maximum occupancy shall be assumed for design purposes. Base internal heat gain per person on one person per 135 square feet of occupiable floor area. Sensible and latent loads per person should be based on the latest edition of the ASHRE Handbook of Fundamentals. For dining areas, auditoriums and other high occupancy areas, occupancy loads should represent the number of seats available. Areas not normally occupied, such as storage rooms or mechanical rooms, do not have occupancy loads. Closing date for submission of responses is March 8, 1996. Responses should be sent to Lawana Hornsby, GSA-Contracts Branch (4PMP), 401 W. Peachtree St, N.E., Suite 2500, Atlanta, GA 30365-2550. The SIC Code for this project is 1711. All responses to this notice must be in writing and must include a complete mailing address (plans cannot be mailed to P.O. Boxes). Sources obtained through this announcement may be contacted for future requirements. (0038)

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