Atch_1_-_Statement_of_Work.pdf

25 October 2018

STATEMENT OF WORK FOR

BUILDING 430 CHILLER AND

CONTROLS REPLACEMENT

PROJECT

ARNOLD ENGINEERING DEVELOPMENT COMPLEX

ARNOLD AIR FORCE BASE, TN 37389-9998

ARNOLD ENGINEERING DEVELOPMENT COMPLEX – WHITE OAK SITE

FEDERAL RESEARCH CENTER AT WHITE OAK

10905 NEW HAMPSHIRE AVE SILVER

SPRING, MD 20903-1050

NOT SENSITIVE

Per Tunnel 9 Heater System Dissemination Determination and Marking Guidance Plan

NOT SENSITIVE

Per Tunnel 9 Chiller and Controls

Replacement Determination and Marking

Guidance Plan

Atch 1

FA9101-19-Q-0003

Table of Contents

1. SCOPE

2. APPLICABLE DOCUMENT

3. REQUIREMENTS

4. ACCEPTABLE CHILLER MANUFACTURERS

5. ACCEPTABLE DIRECT DIGITAL CONTROL (DDC) MANUFACTURER

Appendix A – Submittal Procedure

NOT SENSITIVE

Per Tunnel 9 Heater System Dissemination Determination and Marking Guidance Plan

Appendix A-1

1. SCOPE

The contractor shall supply all labor, equipment and materials to install one 30 ton air cooled chiller with at least 3 load sharing compressors, piping, insulation, controls, and electrical work as specified, and replace all existing pneumatic controls with new Direct Digital Controls. The chiller and controls must be complete, functional, and operational in all respects. Installing Contractor shall provide and install all auxiliary devices and accessories for fully operational chiller. Contractor shall provide all rigging and hoisting needed to remove old chiller and place new chiller on foundation. The contractor is responsible for disposing of old chiller and all old material from job, and follow all EPA polices and regulations. All work shall be performed during normal working hours from 7:00 am to 3:30 pm. Warranty shall be for parts and labor for 5 years on compressors, fans and condenser coils. After completion the contractor shall provide training and phone support for the warranty period.

2. APPLICABLE DOCUMENTS:

The following documents are applicable to this Statement of Work and attached appendices to the extent specified herein.

Government Documents:

Drawing # 1341864

Drawing # 1341874

3. REQUIREMENTS:

3.1 Provide and install 1 (one) 30 ton air cool chiller unit meeting the following requirements: Provide and install factory assembled and tested chiller, consisting of compressor motors, pumps, condenser, evaporator, refrigeration accessories, control panel, gages, indicating lights, auxiliary components, and accessories.

Construction and ratings shall be in accordance with ARI 550.

3.2 Power for the chiller shall be 480 V, 3 PH.

3.3 Unit shall be high efficiency

Appendix A-2

3.4 Chiller shall be Pre-charged with refrigerant R410a.

3.5 Condenser fans shall be direct-driven with metal construction.

3.6. Compressors:

a) Screw/Scroll type compressors.

b) Compressor motor shall be direct drive.

c) Capacity control shall utilize an adjustable load capability from 20 to 100 percent full load.

3.7. Flooded Cooler:

a) Design shall incorporate a minimum of 2 independent refrigerant circuits.

b) Cooler shall have a drain and vent.

c) Low-ambient temperature protection shall be factory installed.

d) Cooler heater, and pump out cycle to protect cooler from ambient temperature freeze down to 0° F.

e) Cooler shall be provided with a factory-installed flow switch.

3.8 Condenser Coils shall be air-cooled heat exchanger. Coil construction shall consist of aluminum alloys for fins, tubes, and manifolds in combination with corrosion-resistant coating.

3.9 Refrigerant circuit components shall include replaceable-core filter drier, moisture indicating sight glass, electronic expansion valve, discharge service valves, liquid line service valves, and complete operating charge of both refrigerant and compressor oil.

3.10 Unit controls shall include the following components, as a minimum:

a) Microprocessor with non-volatile memory. Battery backup system shall not be accepted.

b) Separate terminal block for power and controls.

c) Separate 120-volt power supply to serve all controllers, relays, and control components.

d) ON/OFF control switch.

e) Replaceable solid-state controllers.

f) Pressure sensors installed to measure suction, oil, economizer, and discharge pressure.

g) Thermistors installed to measure cooling entering and leaving fluid temperatures and outside air temperature.

h) Automatic circuit lead/lag.

i) Leaving chilled fluid temperature reset from return fluid and outside air temperature.

Appendix A-3

j) Chilled water pump start/stop control.

k) Low ambient protection to energize cooler heaters.

3.11 The control panel shall include a touch screen display with adjustable contrast and backlighting. Display shall allow a user to navigate through menus, select desired options and modify data.

a) Display shall allow access to configuration, maintenance, service, set point, time schedules, alarm history, and status data.

b) Display shall have one button for chiller on/off.

c) Display shall allow for easy connection of a portable hand held technician tool to access information and upload and/or download chiller settings.

d) Display alarms and parameters shall be capable of being displayed in full text.

3.12. Additional Features:

a) Freeze protection

b) Isolation valve(s)

c) XL starter

d) Low ambient head pressure control

e) BAC net communications

f) Coil trim panels, grilles

g) Navigator display

h) Compressor protection grills

4. SUGGESTED CHILLER MANUFACTURERS

4.1 Manufacturers:

a) Carrier

b) Trane

c) York

5. DIRECT DIGITAL CONTROL SYSTEM

5.1 Requirements:

a) Provide and install a DDC Bacnet unitary controller for the Air Handling Unit.

b) Furnish & install new control sensors on the AHU to replace the pneumatic devices

c) Furnish & install new damper actuators and thermostats

d) Program the new Bacnet unitary controller with suggested set points and system protocols

e) Demo and remove existing pneumatic control system

Appendix A-4

APPENDIX A

SUBMITTAL PROCEDURE

PART 1 GENERAL

1.1 DESCRIPTION OF REQUIREMENTS. This section specifies procedural requirements for non-administrative submittals, including but not limited to shop drawings, product data, manufacturer’s certificate, design data, calculations, and verifications, manufacturer’s instructions, manufacturer’s field service reports, samples, operation and maintenance manuals, and other miscellaneous work-related submittals. These submittals are required to amplify, expand, and coordinate other information contained in the contract.

Non-work-related submittals are addressed elsewhere in the contract rather than in the specification and may include items such as: contract progress schedule, permits, payment applications, performance and payment bonds, insurance certificates, and progress reports.

The Contracting Officer may request submittals in addition to those specified when deemed necessary to adequately describe the work covered in the respective sections of the specification or statement of work.

1.2 SUBMITTAL PROCEDURE

A. Definition: For the purposes of this section, the term “Contractor” denotes the prime contractor.

B. Listing: The statement of work contains a summarized listing of item submittals requiring approval for the work. The listing is included for the convenience of users of the contract documents. The listing may not be all inclusive and additional item submittals may be required.

C. Risk: Do not proceed with the part of the work covered by an item submittal including purchasing, fabricating, and delivering until approval is received.

Machinery, equipment, material, and articles that do not have the required approval shall be installed or used at the risk of subsequent rejection. Any fabrication or other work performed in advance of the receipt of accepted item submittals and approvals shall be entirely at the Contractor’s risk and expense.

D. Transmittal Timing: Coordinate the preparation and processing of item submittals with the performance of the work. Prepare and transmit each item submittal to the Contracting Officer sufficiently in advance of the performance of related work and other applicable activities. Transmit related item submittals for the same unit of work so that processing will not be delayed by the Government's need to review submittals concurrently for

Appendix A-5 coordination. No delay damages or time extensions will be allowed for time lost in late submittals.

E. Content: Each submittal shall be complete and in sufficient detail to allow ready determination of compliance with contract requirements. Complete AF Form 3000 and attach as cover sheet for each submittal. Contractor may include multiple item numbers on an AF Form 3000.

F. Language: All item submittals shall be written in English, including documents, notes on drawings, sketches, and/or samples, calculations, manuals, and all other instances of written text and communication.

G. Units: All item submittals shall be marked or show dimensions and values in the same units as specified in the contract documents.

H. Review Time: Allow sufficient time so that contract performance will not be delayed as a result of the time required to properly process submittals, including time for re-submittals, if necessary. Allow 10 working days for initial Government processing of each submittal. No extension of time will be authorized because of the Contractor's failure to transmit submittals to the Government sufficiently in advance of the work.

I. Contractor Certification: All submittals shall be carefully reviewed by an authorized representative of the Contractor prior to submission to the Government. Each submittal shall be dated, signed, and certified by the Contractor as being correct and in strict conformance with the contract documents. No consideration for review by the Government of any Contractor’s submittal will be made for any items which have not been so certified by the Contractor. All noncertified submittals will be returned to the Contractor without action taken by the Government, and any delays caused thereby shall be the total responsibility of the Contractor.

J. Deviations: Should any item submittals required by the contract documents show deviations from the contract requirement, the Contractor shall make specific mention of such deviations in the letter of transmittal, including stating cost effects, and product and system limitations which may adversely affect the work, in order that if acceptable, suitable action may be taken for proper adjustment of the contract; otherwise the Contractor will not be relieved of the responsibility for executing the work in accordance with the contract documents and the approved submittals. Contractor shall clearly mark the proposed variation in all documentation and specifically point out deviations from contract requirements in transmittal letters. Failure to point out deviations may result in the Government requiring rejection and removal of such work at no additional cost to the Government. Deviations from contract requirements require Government approval and will only be considered when advantageous to the Government. When proposing

Appendix A-6 deviations, deliver written request to the Contracting Officer, with documentation of the nature and features of the deviation and why the deviation is desirable and beneficial to the Government. If lower cost is a benefit, include an estimate of the cost savings. In addition to documentation required for deviation, include the submittal information required for the item. Allow an additional 10 working days beyond normal submittal review period for consideration by the Government of submittals with deviations.

K. Approved Submittals: The part of the work covered by the approved item submittal may proceed provided it complies with the requirements of the contract documents. Final acceptance will depend upon that compliance.

The term “Approved” shall only indicate that there is no exception taken to the submittal. Approval of the item submittal shall not be construed as a complete check, and indicates only that the general method or other information appears to meet the contract requirements. Approval does not relieve the Contractor of the responsibility for any error which may exist.

After item submittals have been approved by the Contracting Officer, no resubmittal for the purpose of substituting materials or equipment, or changes to any other information will be considered unless accompanied by an explanation of why a substitution or change is necessary.

L. Disapproved Submittals: Contractor shall correct disapproved item submittals and resubmit for approval within timeframe noted. If no date is given, Contractor shall submit corrected submittal within 10 working days.

If the Contractor considers any correction or notation on the returned submittal to constitute a change to the contract drawings, specification, or statement of work the Contractor shall notify the Contracting Officer.

M. Responsibility: The Government’s review of Contractor submittals shall not relieve the Contractor of the entire responsibility for the correctness of details and dimensions and conformance to the specifications. The Contractor shall assume all responsibility and risk for any mistakes and/or costs due to any errors in submittals.

N. Inconsistencies: If a conflict or inconsistency arises between an approved item submittal and the contract documents, the contract documents shall govern.

1.3 SPECIFIC SUBMITTAL DESCRIPTIONS AND REQUIREMENTS: Submittal requirements for individual units of work are specified in the Statement of Work (SOW). Except as otherwise indicated in the SOW, comply with the following requirements for each type of submittal.

A. Shop Drawings: These are technical drawings and data specially prepared for this contract including fabrication and installation drawings, setting and

Appendix A-7 seaming diagrams, and coordination drawings (for use on-site). Shop drawings include drawings, diagrams and schedules specifically prepared to illustrate some portion of the work, diagrams and instructions from a manufacturer or fabricator for use in producing the product and as aids to the Contractor for integrating the product or system into the project, or drawings prepared by or for the Contractor to show how multiple systems and interdisciplinary work will be coordinated. Information required on shop drawings includes dimensions, identification of specific products and materials which are included in the work, compliance with specified standards, and notations of coordination requirements with other work.

Provide special notations of dimensions that have been established by field measurements. Highlight, encircle, or otherwise indicate deviations from the contract documents on the shop drawings. Furnish one hard copy and one electronic copy.

B. Product Data: This data includes standard printed information on manufactured products that has not been specially prepared for this contract, including manufacturers' product specifications illustrating size, physical appearance and other characteristics of materials, installation instructions, standard color charts, catalog cuts, illustrations, schedules, standard wiring diagrams, standard product operating and maintenance manuals, and samples of warranty language when the contract requires extended product warranties. General information required specifically as product data includes manufacturers' standard printed recommendations for application and use, compliance with recognized standards of trade associations and testing agencies, the application of their labels and seals (if any), special notation of dimensions which have been verified by way of field measurement, and special coordination requirements for interfacing the material, product, or system with other work. Furnish three hard copies and one electronic copy.

C. Submittals: The Contractor shall submit all documentation in PDF format and in accordance with Appendix A – Submittal Procedure.

D. Design Data: Design data includes design calculations, mix designs, analyses or other data pertaining to a part of work. Refer to statement of work for required quantities, formats, and signatures or certifications required. Furnish three hard copies and one electronic copy.

E. Test Reports: These include reports signed by an authorized official of a testing laboratory that a material, product or system identical to the material, product or system to be provided has been tested in accordance with the specified requirements. Testing shall have been within three years of date of contract award for the project. Reports also include findings of tests required to be performed by the Contractor on an actual portion of the work or prototype prepared for the project before shipment to the job site, findings

Appendix A-8 of tests made at the job site or on a sample taken from the job site, investigation reports, daily logs and checklists, and final acceptance test and operational test procedures. Furnish three hard copies and one electronic copy of each such report required.

F. Certificates: These include statements printed on the manufacturer’s letterhead and signed by the responsible officials of the manufacturer of a product, system or material attesting that the product, system or material meets specification requirements. Certificates include documentation required of the Contractor, or of a manufacturer, supplier, installer or subcontractor through the Contractor, to further demonstrate the quality of orderly progressions of a portion of the work by documenting procedures, acceptability of methods or personnel qualifications. Certificates shall be dated after award of the project contract and clearly name the project.

Furnish three hard copies and one electronic copy of each certificate required.

G. Manufacturer’s Instructions: Preprinted material describing installation of a product, system or material, including special notices and Material Safety Data sheets concerning impedances, hazards and safety precautions.

Furnish three hard copies and one electronic copy.

H. Operation and Maintenance Data: Data furnished by the manufacturer, or the system provider, to the equipment operating and maintenance personnel, including manufacturer’s help and product line documentation necessary to maintain and install the equipment, and needed by operating and maintenance personnel for the safe and efficient operation, maintenance, and repair of the item. The data is intended to be incorporated in an operations and maintenance manual or control system. Furnish two hard copies and one electronic copy.

I. Miscellaneous Submittals: These are work-related, non-administrative submittals that do not fit in the previous categories, including the following:

1. Maintenance agreements. Furnish one hard copy and one electronic copy.

2. Maintenance tools, spare parts, and overrun or maintenance stock.

Refer to SOW for required quantities of spare parts, extra and overrun stock, maintenance tools and devices, keys, and similar physical units to be submitted.

3. Qualification certificates. Furnish one hard copy and one electronic copy

4. Warranty shall be for parts and labor for 5 years on compressors, fans and condenser coils. The warranty period shall begin after acceptance at AEDC. The contractor shall provide training and phone support for the warranty period.

Appendix A-9

J. Submittal Summary Table:

No. Submittal Description Due

1 Chiller Description and

Components

Submit within 5 working days after award

2 Controls System Components and equipment

Submit within 5 working days after award

3 Operating and maintenance manuals

One week after project completion

4 Warranty One week after project completion

END OF SOW

Appendix A-10

Appendix A-11