21. CLIN 0003 B2443 - CDC Replace Chiller - SON.docx

DEPARTMENT OF THE AIR FORCE

HEADQUARTERS 9TH RECONNAISSANCE WING (ACC)

BEALE AIR FORCE BASE, CALIFORNIA

09 May 2024

MEMORANDUM FOR 9 CONS

FROM: 9 CES/CEOER

SUBJECT: B2443 – Replace CDC Chiller - Statement of Need (SON)

A. General Scope. The contractor shall furnish all supervision, labor, tools, equipment, materials, operations and incidentals as required to repair by replacement, the chiller servicing the Child Development Center, B2443. The new chiller will be a like for like replacement. This project will also include replacement of the chilled water supply and return piping between the chiller and adjacent wall.

1. Purchase new 125 Ton Chiller Unit (Trane), installed in current location

2. Demolish and remove the existing 125.3-ton York chiller.

3. Fabricate and install piping to existing chill water system using galvanized 3” piping and ball valve.

4. Make all necessary electrical connections and control connects with Siemens control system.

5. Test and ensure proper functioning and communication of chiller with building Siemens system

B. Existing Conditions:

· Currently the Child Development Center (CDC) is cooled by a York 125.3-ton air-cooled scroll chiller. Because of issues with the chiller it has been earmarked for replacement with a Trane chiller. The existing chiller is in a walled-in, screen-covered enclosure on the southeast corner of the building. The enclosure CMU wall is 113” tall, and the chiller area is 248” wide and 304” long. From the floor to the bottom of the rectangular steel tubes is 103”. There are 5 of the steel tubes supporting the screen above the chiller. The chiller is sitting on a concrete equipment pad (194.25” long by 101” wide, and 5” tall) within the enclosed chiller area. This pad is 40” from the door and 66” from the outside CMU wall.

· This chiller is connected to power (480V,3p, 60Hz), a fire alarm panel, and a Siemens control panel in the nearby electrical room (marked as “ELEC” in Fig. 3).

Figure 1 - 125.3 Ton York Chiller

Figure 2 - Chiller Data Plate

Figure 3 - Location of Chiller SE Corner

C. Authorized Work. Work shall be accomplished in accordance with all contractually incorporated documents. Any work that is accomplished outside of the contractual documents, unless authorized by a contracting officer, is accomplished at the contractors own risk.

D. All work shall be accomplished between 0700-1700 Mon-Fri.

E. All contractor vehicles must enter the base via the Wheatland Gate and shall be subject to inspection. All contractor personnel must obtain base passes, or be listed on the Entry Access List (EAL) throughout duration of work performance. Any persons in the EAL is required to bring two (2) forms of identification or REAL ID in order to access the base.

F. The Government will remove any items/equipment that will be in its vicinity in preparation for these doors to be replaced, and will return any items/equipment after work is complete.

II. WORK ITEMS:

The contractor shall comply with all applicable Federal, State and local NEC construction standards. Current Air Force Occupational Safety and Health (AFOSH) standards and COVID-19 safety regulations also apply.

Contractor shall be in compliance IAW all NFPA, AFI, UFC and ETL standards for fire safety.

All metal and equipment recycling will be disposed of on base to the 9 CES Recycle yard, coordination with the assigned 9 CES project manager will be required to access the recycling yard. Coordination with the assigned 9 CES Project Manager will also need to be accomplished to dispose of any materials off base. Contractor will practice good housekeeping during the project.

MIGUEL RODRIGUEZ, CIV, USAF

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