P09 657A5-20-115 Replace Chiller 2 SOW.pdf

Marion VA Medical Center 2401 West Main Street Marion, Illinois 62959

STATEMENT OF WORK

657A5‐20‐115, REPLACE CHILLER #2

MARION VA MEDICAL CENTER (VAMC)

1.0 Purpose

This Statement of Work (SOW) describes the outcome for the Replace Chiller #2 project, which consists of the disconnection, removal and disposal of the existing chiller #2, the furnishing and installation of a new chiller #2 unit as well as various other ancillary activities to fully integrate the new chiller into the existing control and monitoring systems.

2.0 Period and Place of Performance

The period of performance for this contract shall be set at 240 calendar days from Notice to Proceed (NTP). All contract work shall be completed within this timeframe. The site location is Building 49 of the Marion VA Medical Center Campus in Marion, Illinois.

3.0 Background

The Marion VA Medical Center has identified the need to replace chiller #2 in its campus chiller plant.

The chiller unit being replaced is currently inactive. To meet this need, a new chiller unit is to be provided and installed in place of the old unit.

4.0 Requirements

A. Basis of Proposal:

1. The contractor’s proposal shall be based on this SOW and the project drawings and specifications included. It is the intent of these documents to outline the scope and requirements of the Replace Chiller #2 Project.

B. Performance and Payment Bonds:

1. Performance and/or Payment Bonds are required.

C. Insurance:

1. Standard general liability and builder’s risk coverage is required until work is complete.

D. Wage Rates:

1. Davis Bacon and prevailing wage rates and certified payroll are excluded for manufacture, delivery, and incidental work relating to installation. Davis Bacon and prevailing wage rates and certified payroll applies to only non‐incidental work performed on site.

E. The contractor shall be responsible for coordinating all equipment provided and work performed with the requirements of all applicable codes, including but not necessarily limited to:

1. 29 CFR 1910, OSHA

2. International Mechanical Code (latest approved edition).

3. International Plumbing Code (latest approved edition).

4. NFPA 70, National Electric Code (latest approved edition).

5. H‐18‐8, VA Seismic Design Handbook.

6. ASCE/SEI 7, Minimum Design Loads and Associated Criteria for Buildings and Other

Structures

7. PG‐18‐3, VA Design and Construction Procedures.

8. PG‐18‐10, VA Design Manual for HVAC Systems.

9. PG‐18‐10, VA Design Manual for Electrical Systems.

F. Seismic Design Criteria: Refer to Section 13 05 41 of the Project Specifications.

G. Shop Drawing Submittals:

1. All equipment and materials provided for use on this project by the contractor shall be subject to the approval of the VAMC Engineering Service prior to purchasing. The Government shall not be responsible for the cost of any equipment or materials purchased without said approval. Please see Section 01 33 23 of the Project Specifications for more information.

H. Demolition:

1. The contractor shall ensure that all electrical, water and control service lines to the existing chiller are valved off and locked out prior to demolition activities. The contractor shall further ensure that the deactivation of service to the existing chiller will (in no way) cause any disruption to the outgoing chilled water service from the plant or interference with any other chiller plant system or operation.

2. Existing chiller #2 shall be disconnected:

a. All piping connections from the chiller to the existing chilled water distribution system and the cooling tower loops shall be undone.

b. All electrical connections from the chiller to the existing power distribution and chiller control systems to the chiller shall be undone.

c. All piping and conduit connections shall be cut back to a point necessary to facilitate removal of the existing chiller.

3. Existing chiller #2 shall be removed from Building 49:

a. Once decoupled from all required systems the chiller unit shall be moved out of the building through the existing overhead door.

4. Existing chiller #2 shall be disposed of:

a. The chiller unit shall be taken off‐site and disposed of in accordance with all applicable

Federal, State and Local regulations.

I. Installation:

1. Contractor shall furnish a new chiller unit with the following mandatory attributes:

a. It shall fully comply with Section 23 64 00 of the Project Specifications.

b. It shall fit within the space left vacant by the removal of the existing chiller. This requirement shall include observance of all maintenance and operating clearances.

c. It shall be considered a direct replacement for the existing chiller, requiring no extraneous work on any connected system beyond that which is necessary to facilitate removal of old and installation of new. Additionally, it shall operate within the system limitations and performance envelope of the existing unit in all respects. Should the performance parameters of the machinery chosen for use on the contract vary from the existing system (which are listed below), the contractor shall be responsible for verifying and quantitively demonstrating (via certified engineering report) that the substitution will have no detrimental impacts on the existing system or its function:

i. Design Evaporator Water Flow Rate: 800 gpm.

ii. Design Evaporator Entering Water Temperature: 54.0 F.

iii. Design Evaporator Leaving Water Temperature: 42.0 F.

iv. Design Evaporator Pressure Drop: 14.2 ft‐wg.

v. Design Condenser Water Flow Rate: 1,200 gpm.

vi. Design Condenser Entering Water Temperature: 85.0 F.

vii. Design Condenser Leaving Water Temperature: 95.0 F.

viii. Design Condenser Pressure Drop: 21.9 ft‐wg.

d. It shall have a minimum net cooling capacity of 400 tons.

e. Its condenser shall operate within the capacities of the existing cooling tower loop.

f. It shall have a water‐cooled, centrifugal‐type refrigerant compressor. The compressor motor shall be equipped with a variable speed drive.

g. The refrigerant compressor shall come equipped with an active‐ magnetic/electromagnetic main bearing system. This main bearing system shall be a lubricant free design. The compressor shall also include backup mechanical bearings or a stored electrical energy system which shall serve in the event of electrical power outage to bring the unit to a full stop without damage resulting.

h. The energy usage and efficiency characteristics of the proposed replacement chiller shall be subject to the approval of the facility Energy Manager prior to purchasing of any equipment. This approval shall be provided as part of the submittal review.

i. It shall be compatible with the existing plant control system. Its operation shall be fully automated through integration into the existing controls with no loss of features or functionality. The contractor shall be responsible for the following;

i. Field verification of existing plant control components as well as the current system sequence of operations to the extent necessary to complete the two items below.

ii. Coordination of the new chiller unit’s control needs as they relate to the existing system configuration and capability.

iii. Resolution of any differences uncovered in the previous items as well as determination of all corrective equipment and programming modifications required.

iv. Furnishing and installation of all new components deemed necessary in the previous items.

v. Furnishing all programming and reprogramming deemed necessary in the previous items.

vi. Optimization of the new chiller’s function through the aforementioned controls activities to the degree necessary to satisfy the VAMC Energy

Manager.

j. It shall be capable of functioning off the existing electrical service with as little modification as possible. If the chiller unit chosen for use by the contractor requires the modification of existing electrical components or features, the cost of those modifications shall be considered in the contractor’s scope of work. The existing electrical service parameters are as follows;

i. The voltage/phase/frequency is 480/3/60, respectively.

ii. The chiller is currently fed through an existing 600 volt / 800 amp rated disconnect panel. Relocation of the existing disconnect panel to address any planform shape differences or final clearance issues with the new chiller shall be considered in the contractor’s scope of work.

k. It shall be fully integrated into the coverage provided by the existing refrigerant sensing and evacuation system. Should the refrigerant type of the chiller provided for use differ from the current capability of the system, the contractor shall determine all necessary system modifications and consider those modifications as part of their scope of work.

2. The contractor shall use the existing overhead door to move the new chiller unit into the building.

3. The contractor shall mount the new chiller unit in strict accordance with the manufacturer’s recommendations. Should the concrete housekeeping pad which supports the existing chiller be determined to inadequately fit the planform shape or supports of the new chiller, the contractor shall extend the concrete pad appropriately in all deficient directions. All chiller base plates shall have a minimum four inches (4”) of concrete pad extending beyond the plate edge, unless noted otherwise as part of the certified seismic anchorage design.

4. The contractor shall comply with Section 13 05 41 of the Project Specifications when mounting and anchoring the new chiller.

5. The contractor shall re‐establish all piping connections from the chilled water distribution system and cooling tower loops to the new chiller unit including all fittings which may have been removed during demolition. All pipe and fittings used to reconnect chiller shall be new stock. The size of all connections shall match the pre‐demolition size. Refer to Section 23 21 13 of the Project Specifications for more information and requirements.

6. All reconnected piping and fittings shall have insulation and coverings replaced on them.

The type and thickness of insulation shall be equivalent to the pre‐demolition condition. All re‐applied insulation shall be new stock. Refer to Section 23 07 11 of the Project Specifications for more information and requirements.

7. The contractor shall re‐establish all electrical service and control wiring connections from the existing power distribution and control circuits to the chiller unit including all conduit and fittings. All materials used in the electrical and control reconnections shall be new stock.

8. The contractor shall fully integrate the new chiller system into the coverage provided by the existing refrigerant sensing and evacuation system. Should the refrigerant type of the chiller provided for use differ from the current sensing capability of the system, the contractor shall determine all necessary system modifications and consider those modifications as part of their scope of work.

J. Testing, Start‐Up, Training and Commissioning:

1. Contractor shall complete all factory‐recommended system testing before any unit start‐up activities begin. All testing shall be in accordance with Section 23 05 93 of the Project

Specifications.

2. Contractor shall prove system function with a full unit start‐up before the work shall be considered complete.

3. The commissioning agent shall adjust and optimize the system efficiency in accordance with

Section 23 08 00 of the Project Specifications.

4. Contractor shall arrange for factory‐trained and certified personnel to be available on‐site for at least 8 hours to conduct training of VAMC staff on system operation and maintenance before the work shall be considered complete.

5. Contractor shall complete all system commissioning activities required by Section 23 08 00 of the Project Specifications (including all reporting) before the work shall be considered complete.

4.1 Performance Objectives

A. Completion of Work: The new chiller system shall be considered a turn‐key solution to the Government’s need. The contractor shall be responsible for providing all personnel, expertise, labor, supervision, materials, equipment and logistics necessary for the completion of all work indicated or implied by this Statement of Objectives and the attached project documents to produce the intended, fully functional system within the Period of Performance indicated.

B. Adherence to Adopted Standards: The contractor shall perform the required work in complete accordance with all applicable industry standards, regulations and best management practices.

4.2 Mandatory Tasks and Deliverables

A. Quality Assurance Surveillance Plan: Contractor shall establish a complete Quality Control Program (QCP) to ensure that the requirements of the contract are satisfied. The QCP shall identify issues in the quality of services before the level of performance is unacceptable and should be contained within a formal written Quality Assurance Surveillance Plan, which must be submitted with the vendor’s final proposal. The program and document shall be subject to the approval of the Contracting Officer (CO) and the Contracting Officer’s Representative (COR).

The plan shall be written in accordance with the requirements of Section 01 45 00 of the Project Specifications.

B. Contractor Safety Plan: The contractor shall be responsible for generating a written safety plan to establish safety standards for themselves and their subcontractors while on campus. The safety plan shall be written in accordance with the requirements of Section 01 35 26 of the Project Specifications.

C. Contractor Project Schedule: The contractor shall be responsible for generating a project schedule which utilizes critical path methodology and covers the entire duration of the work involved. The schedule shall be submitted to the CO & COR for review no later than 10 working days after bid acceptance. The schedule shall be considered a living document and shall be updated and resubmitted (by the contractor) in response to any schedule changes made throughout the life of the project.

D. Subcontract Expenditures Report: Contractor shall prepare and deliver a Subcontract Expenditures Report that discloses actual subcontract expenditures by company name, business size standard, and other socioeconomic programs. See Federal Acquisition Regulation (FAR), Part 19.

E. Close‐out Documentation: Contractor shall submit Close‐Out Documentation upon completion of work. At a minimum, Close‐Out Documentation shall consist of standard operation and maintenance manuals, warranties, record (as‐built) drawings for all systems impacted and all start‐up/testing/commissioning reports.

4.3 Performance Constraints

A. The contractor shall limit all work to normal operating hours of 7 am to 4:30 pm, Monday through Friday (excluding recognized Holidays). Any work proposed outside these hours shall require the prior, written authorization of the VAMC Engineering Service.

B. All work performed by the contractor shall be in strict accordance with the approved infection control (ICRA) permit provided for this project.

C. The contractor shall notify the Contracting Officer’s Representative (COR) of any needed utility interruption at least 21 days in advance.

D. The contractor shall take all necessary steps to ensure that normal campus operations are not interrupted while the construction is underway. If an unavoidable interruption is encountered during the course of construction the contractor shall be required to inform the COR at least 21 days in advance of need and receive approval for said interruption from the COR.

E. Roads and parking areas shall be kept operational except for short durations and then only one lane closure is acceptable.

F. Any loading and unloading of equipment or materials shall be approved by and coordinated through the COR.

G. Any damage by the contractor to Government property during the course of the work is the responsibility of the Contractor to repair at no additional cost to the Government.

5.0 Attachments

A. Compiled Project Specifications for Project 657A5‐20‐115, Replace Chiller #2.

B. Compiled Project Drawings for Project 657A5‐20‐115, Replace Chiller #2.