SUMMARY OF WORK_QXS ARSR HVAC Replacement.pdf

QXS - ARSR HVAC Replacement Feb 2024

SUMMARY OF WORK PAGE 1

SUMMARY OF WORK

1.0 GENERAL SCOPE

The selected Contractor shall furnish all labor, product, equipment, materials, and supervision for the demolition and installation associated with the HVAC Replacement Project at the Andrews (QXS) Long Range Radar (ARSR) site located near Seminole, TX.

“Demolition” includes but is not limited to removing and disposing of the existing 4 HVAC units and associated ductwork from the facility. “Installation” includes but is not limited to providing and installing 2 new 15–ton Packaged HVAC units with associated ductwork, 2 mini-split systems, HVAC controls, and all associated components at the site. Prior to “installation,” all equipment and material shall be reviewed and accepted by an FAA representative.

The following items are a summary of the project and are provided solely for the purpose of describing the general nature of the work. The Contractor is responsible for accomplishing all items of work identified in the applicable drawings, specifications, and provisions of the contract:

A. General

1. QXS ARSR is an active operational facility that runs 24 hours a day, 7 days a week.

2. All work shall be coordinated with the FAA and be accomplished on a “Not to interfere with FAA operations” basis.

3. Construction material shall be stored only in FAA approved areas.

4. Construction staging shall be allowed only in the FAA approved areas.

5. The Contractor shall provide all temporary services required for construction.

6. The Contractor shall clean up and restore the site grounds to its original condition after the work has been performed.

B. Demolition

1. Remove and properly dispose of existing packaged HVAC units (4 units). Provide certificate of disposal for refrigerant.

2. Remove and properly dispose of the associated ducting, controls, and other related components.

3. Relocate interferences for the new equipment as needed to allow clearance for new ductwork, mini-splits, etc. All relocations must be done with prior approval from the COR.

4. Cap and flash all roof curbs to ensure they are weathertight.

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5. Patch all wall openings left as a result of the demolition to match surrounding areas.

6. Due to the critical equipment inside this facility, reliable cooling is required throughout the project. Temporary HVAC units will be necessary. Prior to switching over to the new units, a 24-hour continuous run-in test is required.

C. Installation

New Air Conditioners

1. Provide and install 2 each new Trane Precedent 15-Ton Packaged Air Conditioning Units (TSJ180*3S00**D2A000B000A4*00A), or FAA approved equal, and all associated components into the general locations shown on installation drawing M001(I). Exact locations are to be field determined. The minimum characteristics of the new air conditioning units shall be as follows:

a. Commercial application

b. R-410a Refrigerant

c. 15 tons nominal Capacity

d. Condenser Hail Guards

e. Standard Static Indoor Fan

f. Low Ambient Cooling

g. FreezeStat

h. Hinged Access Doors

i. Return Air Smoke Detector

j. 208V / 60 hertz / 3 phase

k. Associated Factory Curb or Stand

l. GFCI Outlet – Powered

m. Dry-bulb controlled economizer with barometric relief

n. Clogged filter and condensate overflow switches

2. Mount unit curbs or stands to concrete using concrete anchor/studs. Secure new units per manufacturer’s instructions.

3. Install 1 each Government Furnished (GFE) OAS HVAC controller. Contractor will be responsible for providing and installing 3/4” conduit from the controller and properly sized thermostat wire to each new unit.

4. Provide and install 2 each new Mitsubishi 72,000 BTU/HR Mini-Split Heat Pump

Units (Mitsubishi Smart Multi model MXZ-SM72TAM-U1 or FAA approved equal) with 5 separate indoor ductless air handlers for each system, and all associated components into the same general locations shown on M001(I). Exact locations are

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to be field determined. The characteristics of the new air conditioning units shall be as follows:

a. Commercial application

b. R-410a Refrigerant

c. 6-ton total capacity per system: 2-ton suspended ceiling indoor units for the

BUEC and TELCO Rooms (model PCFY-P24NKMU-ER1.TH or FAA approved equivalent), 1-ton ceiling cassettes for all other rooms (model PLFY- P12NFMU-E or FAA approved equal)

d. Low ambient accessories

e. Manufacturer designed wall mounting bracket

f. Line hide for exterior portions of refrigerant line sets

5. The FAA prefers brazed joints for mini-split system refrigerant lines rather than flared joints wherever allowable. All required flared joints must include installation of a FlareSeal gasket, or FAA approved equal.

New Ductwork

1. Provide and install new ducting per SMACNA standards as detailed on associated install drawing M001(I). A non-motorized counterbalanced back-draft damper shall be installed in the supply ductwork for each HVAC unit as to prevent back-flow to a non-active unit during normal operation. A 14”x14” access door is required to be installed downstream of each back-draft damper and near security bar locations.

2. Install new return ducting and grilles at the general locations shown on the installation drawing M001(I).

3. Dimensions shown on drawings are airway (interior) dimensions. Externally insulate duct when possible.

4. Exterior ducting shall be externally insulated and covered in a protective coating similar to VentureClad 1577CW or FAA approved equal.

5. All new hangers shall be trapeze style. Other hanger styles can be submitted to the FAA for review/approval.

6. All ductwork bonding shall comply with the latest revision of FAA Standard FAA- STD-019, “Lighting Protection, Grounding, Bonding and Shielding Requirements for Facilities”.

7. Replace/repair damaged or missing ceiling tiles as needed. Tiles shall be similar in size and style as existing.

Security Barrier Details

1. All vent and duct openings that penetrate perimeter walls of the facility that exceed 96 square inches must be protected with permanently affixed bars or grilles unless one dimension of the penetration measures less than six (6) inches

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apart. Preferred protection method is installation of 1/2-inch diameter steel bars, welded vertically and horizontally six inches on center. Bars must be secured to the opening with tamperproof security screws.

a. Preferred protection method is installation of 1/2-inch diameter steel bars, welded vertically and horizontally six inches on center. Bars must be secured to the opening with tamperproof security screws.

b. Alternative method of protection requiring FAA approval is the installation of 3/4-inch mesh, #9 (18 gauge), case-hardened, expanded metal; installed with tamperproof security screws.

c. Security assembly shall be painted with Sherwin-Williams Seaguard 1000 (or FAA approved equivalent) after fabrication is complete.

Electrical

1. All electrical work shall comply with the latest revision of FAA specification FAA-C- 1217H, “Electrical Work, Interior”.

2. All equipment grounding shall comply with the latest revision of FAA standard FAA- STD-019F, “Lightning Protection, Grounding, Bonding and Shielding Requirements for Facilities”.

3. All bonds shall be exothermic welds or FAA approved pressure connections.

4. Contractor shall confirm breaker size prior to construction and replace if necessary, per unit manufacturer specifications. Breakers may be oversized if the associated disconnect is properly fused for the serviced equipment.

5. Provide and install properly sized Heavy Duty disconnects and connecting wires for each new air conditioner unit. Outdoor disconnects shall be NEMA 3R minimum rating. Each disconnect shall be fused to match manufacturer rating for supported equipment.

6. Provide and install new electrical circuits for the mini-split systems. Circuit will be identified prior to start of construction and approved by FAA Representative.

7. Provide updated printed Panel schedules to affected Panels.

8. Label each new/reused disconnect with Voltage, Phases, and Source Panel &

Breaker info. Labels shall be plastic engraved nameplates with white letters and black background. Letter size must be 1/8" for controls, 3/16" for devices on control panel covers and 3/8" for safety switches, air conditioning equipment and other equipment devices. Nameplates must be secured to equipment, cabinets and to controls with adhesive backing.

9. Utilize Liquid-Tite type flexible conduit when flexible application is required. Flex conduit shall not exceed 6’ individual length.

10. EMT Conduit is only allowed on the interior of FAA facilities. All outdoor conduits shall be rigid steel with threaded connections.

11. Where EMT is used, only compression-type fittings are acceptable.

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Concrete Pad

1. Provide and install new concrete pad for the packaged HVAC units.

a. Contractor is responsible to perform all utility locates prior to any digging required on this project.

b. Contractor shall coordinate with the FAA to perform utility locates for all FAA utilities (e.g. communication, electrical, or mechanical systems owned by the

FAA).

c. Concrete shall have a minimum 28-day compressive strength of 3,000 PSI, a maximum slump of 4 inches, and a maximum aggregate size of 1-inch.

Testing and Balancing

1. Perform an operational check of all newly installed equipment.

2. Confirm the cooling capacity is 15-tons and cfm rate is a minimum of 6000 cfm for new air conditioning units. Confirm proper operation of all dampers.

3. Confirm compressor operation and staging (if applicable) for the controls and air conditioning units and economizers.

4. Balance airflow as shown on M001(I). Provide Test & Balance Report upon completion of project.

5. Perform an operational check of all newly installed mini-split equipment and provide copies of all manufacturer start-up documentation to the FAA.

Maintenance Equipment:

1. Provide the following equipment to the FAA for continued maintenance of the new R-410a HVAC Equipment.

a. Valve Manifold (Fieldpiece SMAN480V or FAA approved equal)

b. Recovery Machine (Yellow Jacket 95760 or FAA approved equal)

c. Vacuum Pump (Yellow Jacket 93580 or FAA approved equal)

d. Digital Refrigerant Scale (Yellow Jacket 68802 or FAA approved equal)

e. Recovery Tank (Mastercool 62010 or FAA approved equal)

f. 4 sets of replacement filters – Manufacturer Recommended

g. 1 Spare set of disconnect fuses (if applicable)

h. 1 Spare set of evaporator fan belts

Training:

1. Provide new equipment training to the facility personnel for all newly installed equipment. Training shall consist of at least 4 hours detailing the new units and individual components of the system, including Filter Replacement, Lock Out Procedures, and any special features of installed equipment.

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1.2 APPLICABLE DOCUMENTS

A. Applicable Documents - All FAA, Military, Federal, and industrial codes or standards, specifications, and contract drawings referenced in this and the following divisions form a part of this specification and are applicable only to the extent they were used as a basis of this design. All references to codes, standards, specifications, and construction drawings refer to the latest editions (and any supplements) in effect on the date of the contract.

B. Applicable Publications - The publications listed below form a part of this specification to the extent referenced. The publications are referenced to in the text by basic designation only.

1. Code of Federal Regulations (CFR):

a. OSHA General Industry Safety and Health Standards (29 CFR 1910), OSHA

Construction Industry Standards (29 CFR 1926). OSHA 2202 is a condensed version of 29 CFR 1926. Each is for sale by the Superintendent of Documents, U.S. Government Printing Office, Washington DC 20402.

b. National Emission Standards for Hazardous Air Pollutants (40 Cfr, Part 61).

2. SMACNA Handbooks: Sheet Metal and Air Conditioning Contractors’ National

Association

3. Federal Standard (313A): Preparation and the Submission of Material Safety Data

Sheets.

4. FAA Specification 1217H: Electrical Work, Interior.

5. FAA Standard 019f: Lightning and Surge Protection, Grounding, Bonding, and

Shielding Requirements for Facilities and Electronic Equipment.

6. List of Drawings:

These listed drawings are for information only, expressing existing conditions and construction details. The contractor shall verify dimensions, locations, and sizes on the applicable drawings prior to installation.

Project Documentation M001(I) HVAC Installation OAS 2.5 HVAC Controller User Manual

Existing Project Related Documentation (For reference only) None

1.3 DEFINITIONS

A. Federal Aviation Administration (FAA) - The terms "Federal Aviation Administration" (FAA) and "government" as used herein denotes the "owner".

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B. Project Engineer (PE) - The term "Project Engineer (PE)” as used herein denotes the "Government’s representative".

C. Contracting Officer (CO) - The term "Contracting Officer" (CO) as used herein denotes the person designated to act for the Government in the performance of this contract.

D. Contracting Officers Representative (COR) - The term "COR” as used herein denotes the representative of the Contracting Officer at the job site. The term is synonymous with the FAA terms "Resident Engineer" (RE).

E. Contractor and Subcontractor - The term "Contractor" as used herein denotes the firm who will perform and complete the work required by the Contract. The term "subcontractor" as used herein denotes the person or firm retained by the Contractor to perform a particular unit of work required by the Contractor. Subcontractors shall be required to meet all specifications required of the Contractor.

1.4 CONSTRUCTION CONDITIONS

A. Period of Performance – The FAA anticipates construction activities to last no longer than 45 days.

B. Site Location -https://www.google.com/maps/place/32%C2%B033'15.0%22N+102%C2%B025'40.0%22W /@32.5540395,-102.4287179,201m/data=!3m1!1e3!4m4!3m3!8m2!3d32.55417!4d- 102.42779?entry=ttu

C. Submittals - Prior to submitting orders, the contractor shall submit specifications for each new component of the installation for approval. Examples of required submittals include the new HVAC units, disconnects, backdraft dampers, diffusers, placards, curbs or stands, duct insulation, etc. Contractor shall provide submittals for samples, certificates, reports, catalog cuts, letters, shop drawings, maintenance and operations manuals, etc. as required throughout the project. All documents shall be submitted to the COR.

D. Conflict Resolution - The Contractor shall meet standards, specifications, and drawings as specified herein. The specifications and drawings shall rule in all cases.

Specifications shall govern over drawings. If any conflict should exist between site drawings (location-specific drawings) and standard drawings (drawings not referring to a particular location), the site drawings shall govern. In the event of dimensional discrepancies or omissions, the Contractor shall field verify and correct the information, and notify the RE. No work shall be done until agreement has been made with the RE

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E. Inspection

1. Access for Inspection - The Contractor shall allow the RE complete access to all portions of the work. Portions of the work buried, enclosed, or disguised, shall be inspected by the RE before being obscured by the next operation of the Contractor. In all cases, the RE shall be informed accordingly and given access to the work. Work obscured before inspection and acceptance by the RE, may, at the option of the RE be opened for inspection at no additional cost to Government.

The RE will inspect all work in progress up to completion and final Contractor’s Acceptance Inspection (CAI) including all materials, tools, and equipment. Such inspection may extend to all or a part of the work for the preparation, fabrication or manufacture of the materials to be used. The RE will notify the Contractor of any non-compliance with the contract specifications and/or drawings, and may reject workmanship or materials accordingly.

2. Contractor's Acceptance Inspection (CAI) - After substantial completion of all the Contractor's work, a CAI will be conducted between the Contractor and Government. The RE will review the contract documents and verify that the Contractor has completed all required work. If work remains to be completed, an itemized list will be prepared, and the contractor at no additional cost to the Government shall complete the remaining tasks correctly. A Joint Acceptance Inspection (JAI) requires FAA personnel to be present. It may be held concurrently with the CAI.

F. Project Coordination - The Contractor shall be required to coordinate his/her construction activities with the FAA through the COR. All work which affects the facility shall be coordinated and approved by FAA personnel through the COR at least forty-eight (48) hours in advance of the scheduled work. Failure to notify and obtain the necessary approval may result in a rescheduling of the work. If weather conditions or aircraft operations preclude a scheduled shutdown of an existing FAA facility, the Contractor shall reschedule the work. The Contractor will be required to coordinate all power shutdowns of existing facilities with the FAA, through the COR, seventy-two

(72) hours in advance. Each shutdown shall be limited and off-peak hours shall be required for testing or power shutdowns, with the facility placed back in service at the end of the workday, or as stipulated by the FAA.

G. Compliance with Local and Other Codes - The Contractor shall comply with local and other codes and standards. Where the requirements of the specifications and drawings exceed those of the local or other codes, the Contractor shall comply with the requirements of the specifications and drawings.

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H. Schedules

1. Hours of Work – Shall be approved by the COR. Most of the work is expected to be performed during normal working hours; however, some work may be required afterhours. Work on weekends and Federal holidays shall be approved in advance by the COR in writing.

I. Site Access - Access to the site will be via a pre-determined route identified and agreed upon at the pre-construction conference.

J. Special Permits - The Contractor shall obtain and submit evidence of all necessary permits for the work. The Contractor shall abide by all requirements dictated by the city, state, federal, airport authority or municipality for such permits without any additional cost to the government.

K. Waste Disposal - The Contractor shall provide on-site containers for the collection of construction waste materials, debris and rubbish and their daily removal from the site.

Any spillage on access and haul routes shall be cleaned up immediately. All spoil, waste and debris removed from the work site and not specified for reuse or identified as salvageable items, or identified as contaminated contents shall be disposed of offsite in areas authorized by the applicable County, State and/or Local agencies and in accordance with current rules and regulations governing the disposal of such waste.

The Contractor, at no additional cost to the government, shall pay disposal fees and miscellaneous charges. Copies of all documentation of the disposal of any fuel or hazardous wastes will be submitted to the COR.

L. Cleanup - The work site shall be kept clean and orderly during the progress of work.

After final inspection, but before final acceptance of the work, all exterior surfaces of the equipment shall be cleaned of dirt, mud, or oil accumulations. All debris shall be removed from the general site area.

M. O & M - Upon completion of the facility modifications, the Contractor shall provide operation and maintenance instructions for all new equipment. This information will then be retained by the COR (and the FAA) and used to reflect the as-constructed conditions.

N. Warranties - Documentation for the warranties shall be provided to the government upon completion of the project.

1.5 SAFETY

OSHA and FAA safety standards will be enforced. In keeping with such standards, the Contractor shall, at a minimum, provide:

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A. Safety Plan - The Contractor shall have and submit a Safety Plan with the purpose of maintaining a safe working environment for construction workers employed on site.

The safety plan shall require a statement that the current Occupation Safety and Health Act (OSHA) regulations on safety in the construction industry, OSHA Title 29, Part 1910 and Part 1926, as well as FAA safety regulations are followed. The plan will be used by the COR to insure that the work is accomplished in accordance with accepted safety practices.

B. Trained Personnel - Personnel shall be properly trained in the usage of all equipment for which they will be required to use during the Contract. The COR may request documentation or other evidence of training at any time. Personnel without adequate training will be prohibited from using such equipment.

C. Lock Out / Tag Out – The Contractor shall employ and detail lock-out / tag-out procedures to employees working with and around electrical systems. When accessing an electrical panel, a FAA technician must be present prior to interrupting and energizing the breakers.

D. Safety Data Sheets - The Contractor shall have Safety Data Sheets (SDS) conforming to

Federal Standard 313A, written by the manufacturer, for all materials containing chemicals or other substances which may pose a hazard. One (1) copy of each SDS shall be submitted to the COR and one (1) copy of each SDS shall be kept on file at the job site at all times. The Contractor and subcontractors will be prohibited from handling any material which does not have an applicable SDS on file at the site until such SDS arrives on site.

E. Safety Equipment - The Contractor shall provide safety equipment including, but not limited to, a Red Cross approved First-Aid kit and the appropriate number of annually inspected, charged fire extinguishers with the proper NFPA rating.

F. HAZCOM Program - The Contractor shall have a hazard communications (HAZCOM) program. The Contractor and each subcontractor shall submit a copy of their HAZCOM program as well as a copy of their current OSHA 200 form, if requested.

G. Work Practices - Although OSHA regulations and the Contractor's Safety Plan will usually apply, the COR may consider certain work practices to be unsafe in accordance with Public Law 91-596, Part 5a and 5b. The COR may stop any operation which is in violation of the OSHA standards or fails to comply with the safety plan or other safe work practices.

H. Designated Foreman - When any construction activity is conducted at the site, the presence of a designated, competent contractor’s foreman is required at the job site.

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The foreman must be qualified and capable of organizing and coordinating all activities of the Contractor and his subcontractors, and keeping a safe job site.

I. Work Force - The Contractor shall at all times, when construction activities are conducted, have a substantial number of workers for each task to proceed expeditiously and without generating delay, for lack of man-power.

2.0 CONTRACTOR-FURNISHED MATERIAL AND EQUIPMENT

2.1 MATERIAL DELIVERIES

All material deliveries made under this contract shall be arranged for delivery to the Contractor's material staging area. This area shall be located as determined at the pre-construction conference.

2.2 STORAGE AND PROTECTION

The Contractor, through the COR, shall secure from FAA all necessary clearances for storage areas on site, including any time limitations upon the use of such areas. The storage and protection of Contractor material shall be the sole responsibility of the Contractor. The Contractor shall provide at his/her own expense all fencing, shelters and security personnel as may be necessary for the protection of the material and equipment.

2.3 PERTINENT INFORMATION

Any pertinent information listed about the contractor-furnished material and equipment shall be submitted to the COR.

3.0 EXECUTION

3.1 WORK SEQUENCE

The QXS ARSR is an active operational facility, which runs 24 hours a day, 7 days a week; therefore, all work shall be coordinated and accomplished on a “not to interfere with FAA operations” basis. Some of the work performed may have to be accomplished after hours to accommodate Air Traffic Operations. Many of the steps of this project can be done simultaneously or in a different order.

3.2 CONTRACTOR USE OF PREMISES

A. Use of the Site - Do not disturb portions of the site beyond the areas in which work is required.

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B. Driveways and Entrances: Keep driveways and entrances serving the premises clear and available to the Government, the Government’s employees, and emergency vehicles at all time. Do not use these areas for parking or storage of materials.

Schedule deliveries to minimize space and time requirements for storage of materials and equipment on-site.

C. Use of the Existing Building - Maintain the existing building in a watertight condition throughout the construction period. Repair damage caused by construction operations. Take all precautions necessary to protect the building during the construction period.

END OF SECTION