NWWP92402100076 CRAC Replacement SOW.pdf

STATEMENT OF WORK

LCH CRAC Replacements

Statement of Work

Computer Room Air Conditioning Units

Lake Charles, Louisiana Weather Forecast Office February 10, 2021

Background:

The National Weather Service (NWS) Weather Forecast Office (WFO) located in Lake Charles, Louisiana (LCH) needs replacement of its Computer Room Air Conditioning (CRAC) units.

The existing units were damaged during the 2020 Hurricane Season. The Equipment Room uses these units for critical cooling and is vital to daily operations.

Scope:

Computer Room Air Conditioning Replacements

Provide all labor and materials to replace existing CRAC units with a new system serving site Equipment, Electric, and Communications Rooms. Based upon heating & cooling loads, the LCH WFO will require a 10-ton Liebert Unit or equivalent system. Equivalency will be based upon system performance, reliability, energy efficiency, footprint, and warranty. The System must continually maintain rooms between 65-74 degrees Fahrenheit and 45-55% Relative Humidity. All new systems must have N+1 redundancy to ensure system availability in the event of component failure. Components (N) must have at least one independent backup component (+1). New systems must automatically switch lead system to lag each month to balance operating hours between primary and standby system. Enable monitoring and control of new systems through integration with existing Building Automation System.

Refer to as-built mechanical drawings for original installation (Copies available upon request). Heating and cooling must be maintained in the Equipment Room 24 hours x 7 days per week without interruption.

The Contractor Shall:

1. Remove two existing 10-ton Liebert units (LCH)

2. Recover all refrigerant in compliance with current EPA and industry standards. Reclaim refrigerant or depose of in accordance with current EPA standards.

3. Inspect and repair or replace electrical and control wiring to include conduit, to support new Liebert or equivalent units.

4. Replace refrigerant line sets sized to new CRAC units manufactures specifications.

5. All line sets will be insulated and the portion of the line sets outside will have a UV rating in compliance with the 2018 UMC.

6. Line sets shall be sleeved and sealed at wall or floor penetrations, per Manufacturer and

2018 UMC.

7. Provide and install new Liebert or equivalent units and all appurtenances necessary to deliver a fully functional system.

8. Install and set iCOM control system or equivalent to run one Liebert unit or equivalent as primary and one unit as backup. Provide capability to alternate lead and lag systems to balance total operating hours.

9. Provide system equipment to maintain room temperature and humidity between 65-74 degrees F and 45-55 percent relative humidity.

10. Incorporate infrared humidifier with 11 lb./hr. capacity and downflow configuration with electrically commutated, variable speed fans on each unit

11. Provide electrically commutated, variable speed fans for each condenser unit

12. Install equipment grounding in compliance with National Weather Service Manual 30-

13. Setup and perform functional tests validating smooth transition from primary to backup units.

14. Provide manufacturer’s design and commissioning standard or equivalent compliant with

ACCA standards.

15. Provide proof of warranty registration within 90 days of installation.

16. Dispose of all construction debris off site and return all work areas to a clean, operational condition

17. Provide 8 hours of training and maintenance information to local staff.

18. Set sequencing of units to ensure smooth changeover of lead system to lag system each month to balance operating hours.

19. Install units such that they discharge cold air out the bottom and the plenum used for conditioned air distribution is the space between the concrete slab and the raised computer flooring. The return air intake must be at the top of the HVAC unit. The computer server racks receive conditioned air from under the floor and exhaust air out the top. All units must be able to provide this exchange of air from the floor up to establish cooling of the IT equipment in the room.

20. Install new Liebert or equivalent units and appurtenances to deliver a fully functional

HVAC system.

Site Indoor Model Quantity Service Outdoor Model

Quantity Service

LCH FH114AUAAM 1 Primary DCDF205- A

1 Primary

LCH FH114AUAAM 1 Backup DCDF205- A

1 Backup

Point of Contacts:

TBD

Security:

The contractor(s) will be required to sign in each morning at the front reception area and sign out each evening.

Place of Performance:

Lake Charles Weather Forecast Office 500 Airport Blvd., #115 Lake Charles, LA 70607-0669

Period of Performance:

Provide a fully functional and operational system 120 days from contract award date.

Project Warranty:

Contractor shall provide a written warranty for the installed system for a period of (1) one for year parts and (1) one year for labor from the date of acceptance. Any additional warranty periods provided by the unit manufacturer must be provided with the quote.

STANDARD CLAUSES

A. Compliance The Contractor shall comply with all local, state, and Federal environmental, health, and safety regulations while conducting this work. In addition, the Contractor shall ensure that all work is compliant with all applicable codes and be responsible for all licenses, permits and fees required to complete this project.

B. Disposal The Contractor will be required to properly remove and dispose of all waste material in an environmentally friendly manor.

C. Guidelines The Project shall follow the guidelines stated in the Statement of Work, site diagrams, blueprint, and any contractor provided quoted documents. All modifications must be submitted and approved by the Contracting Officer.

D. Hours of Operation Work shall be performed between 7:00am & 5:00pm Monday thru Friday unless otherwise approved by the COR. Contractor agrees to observe all Federal Holidays, and any other day off work designated by Federal Statute, Executive Order, or Presidential Proclamation:

New Year’s Day, Labor Day, Columbus Day, Veteran's Day, Thanksgiving, Christmas, Memorial Day, Presidents Day, Independence Day & Martin Luther King Day.

D. Facility Access A Project sign in sheet shall be completed each day for all contractors, contractor employees and sub-contractors on site.

E. Government Contact The Facilities Engineering Technician (FET) will serve as the Government’s point of contact for all submissions.

F. Documents The Government does not warrant that any documents provided as attachments to be free from discrepancies, ambiguities, errors, omissions, or changing conditions. It is the responsibility of the Contractor to confirm existing conditions and resolve discrepancies between documents.

G. Project Duration Project shall be completed within 120 days of notice to proceed.

H. Service Contract Labor Standards Act (SCLS).

The Contractor shall comply with the current wages of the SCLS Act for Calcasieu Parish, LA.

SAFETY AND EMERGENCY PLAN

A. The Contractor shall observe and institute all applicable OSHA safety requirements and procedures to prevent accidents and injuries to both Contractor and Government employees including 40 CFR 1926 Subpart M for fall protection requirements.

B. The Contractor shall designate one person as Safety Coordinator for purposes of communication between the Contractor and the National Weather Service FET and site POC’s

GOVERNMENT PROVIDED MATERIALS AND/OR SERVICES

A. EXCLUSIONS:

Unless otherwise indicated elsewhere in this SOW, the Government will provide no data, materials, equipment and/or services to the Contractor. Any and all research required to fulfill the SOW described herein, shall be the responsibility of the Contractor. The Government retains the right to request the Contractor to acquire additional information on behalf of the Government.

B. WARRANTY:

The Government does not warrant that any documents provided as attachments to be free from discrepancies, ambiguities, errors, omissions, or changing conditions. It is the responsibility of the Contractor to confirm existing conditions and resolve discrepancies between documents.

C. SUBMITTALS:

Shall be sent to POC/FET:

***All submittals shall become the property of the U.S. Government***

END OF STATEMENT OF WORK

Project Warranty: