21.1 - Appendix A - Statement of Work 1-23-2023.pdf

APPENDIX A

STATEMENT OF WORK

“Maintenance and Repairs for NREL-Owned Photovoltaic Systems”

January 23, 2023

1) Background:

The National Renewable Energy Laboratory (NREL) is a national laboratory owned by the U.S. Department of Energy (DOE). NREL is the only federal laboratory dedicated to research, development, commercialization, and deployment of renewable energy and energy efficiency technologies. NREL is managed and operated for DOE’s Office of Energy Efficiency and Renewable Energy by The Alliance for Sustainable Energy (Alliance), the “M&O Contractor”.

The National Renewable Energy Laboratory (NREL) consists of 630 acres and buildings that range in age from 7 to 41 years old. NREL has nine (9) Facility Managers that manage multiple buildings throughout both campuses.

NREL has a rooftop SunPower photovoltaic system (PVS) located at the Egress Ingress Parking Structure (EIPS), Visitor Parking Structure (VPS), and Research Support Facility II (RSF II).

• The EIPS PVS provides of 1.15 Megawatts of peak power consisting of 3,632 power modules. Inverter: Satcon PowerGate Plus (135kW, 250kW, 500kW).

• The VPS PVS provides 524 Kilowatts of peak power consisting of 1,664 power modules. Inverter: Sunny Central 250U.

• The RSF II provides 408 Kilowatts of peak power consisting of 1,296 power modules. Inverter: Sunny Central 250U/500U.

NREL has another smaller-scale rooftop photovoltaic systems manufactured by SCHOTT Solar. The primary additional system is located at the South Site Entrance Building.

SCHOTT Solar PVS provides 16.1 Kilowatts of peak power consisting of 60 modules and

(3) three SMA combiner boxes with integrated inverters. The inverter for this system is SMA Sunny Boy 3000-US.

NREL is looking to obtain preventative maintenance and repair services on all NREL-owned PVSs. Preventive maintenance and regularly scheduled inspections are required to maximize power production and longevity of the PVSs. Additionally, as-needed repairs may be requested to ensure the PVSs remain fully functional.

Technical support is required 24 hours a day to provide troubleshooting to NREL Staff and to ensure as-needed repairs are completed in a reasonable timeframe.

This Statement of Work covers all labor, supplies, materials, replacement parts, equipment, transportation to and from the site, and any other goods and services required to provide inspections, preventative maintenance, and repairs on NREL PV systems. Additional PV Panel Systems may be added, removed, or expanded on over time. Currently, all inverters are located on ground-level and all combiners and panels are located on roofs.

2) Description of Work:

a) Minimum Annual Inspection Requirements

The Subcontractor shall perform an annual inspection, once every twelve (12) months on the PV systems at all locations listed in Section 3 below. The annual inspection will include, at a minimum, the following:

1. Array

a. Inspect PV modules for damage, discoloration, or de-lamination.

b. Inspect mounting system for damage or corrosion.

c. Replace connectors between module(s).

d. Replace MC connector lead to combiner box.

2. Trackers (where applicable).

a. Inspect tracker components for damage or corrosion.

b. Inspect tracker controller for damage.

c. Verify proper operation and alignment.

3. Inverter

a. Torque checks on critical electrical terminations.

b. Inspect inverter pad and container.

c. Replace inverter AC fuse.

4. Electrical System

a. Inspect ground braids, electrodes, and conductors for damage.

b. Perform thermo-graphic analysis of combiner boxes, inverters, transformers, and conductor connections to buses, breakers or disconnects.

5. Meteorological Station

a. Inspect weather measurement equipment for damage.

6. Site Conditions

a. Inspect drainage conditions.

b. Inspect vegetation for array shading or fire hazards.

c. Inspect safety conditions and proper signage.

b) Annual Inspection Reporting

1. Record results of all inspections.

2. Take photographs of any damage or defects identified.

3. Inform NREL of all deficiencies identified.

4. Provide NREL with recommendations for corrective actions.

c) Phone Access Requirements – 24/7/365

1. The Subcontractor shall provide customer service support hotline that includes:

a. Technical support to be provided 24 hours a day, 365 days per year.

b. Remote troubleshooting available 24/7/365.

i. Subcontract Support technicians shall provide step-by-step diagnosis instructions to NREL Technical Monitor or Work Control Center designee to support NREL Maintenance Staff as required.

c. Scheduling shall be available on the 24/7/365 phone line and confirmed scheduling for all required tasks to be completed within 48 hours of the initial request. The request may or may not be tied to troubleshooting, and is at the discretion of the NREL Technical Monitor or Work Control Center designee to determine if troubleshooting prior to scheduling is required.

d. Provide immediate scheduling for emergency repairs within 4 hours of the initial service call, with on-site response within 24 hours.

d) Preventative Maintenance and Emergency Repairs The Subcontractor shall provide preventive maintenance within two weeks or ten

(10) business days of the NREL Technical Monitor or Work Control Center Request or emergency repair within twenty-four (24) hours of the initial 4-hour response window.

1. Preventative maintenance and emergency repairs may include, but are not limited to the following:

a. Array

i. Cable and termination repair or replacement.

ii. Grounding repair or replacement.

iii. Panel repair or replacement.

b. Trackers

i. Lubricate tracker motors and jackscrews.

ii. Visually inspect for corrosion on tracker shaft.

iii. Fix screws on all connectors properly.

iv. Visually check all cables for possible fractures, pinched points.

v. Make sure that PV Cables have not slipped out of position in a way that they could be strained due to tracker movement.

vi. Clean holes in motor housing and motor cap for draining condensed water.

vii. Replace motor with mechanical gears as deemed necessary by the

Technical Monitor.

c. Inverter

i. Clean all filters and fans.

ii. Ensure fans are not blocked and are fully functional.

iii. Clean inverter cabinet air vents.

iv. Clean/remove dust and debris from inverter heat sinks per manufacturer requirements.

v. Check all connections and ensure the connections are fixed tightly.

vi. Review display for error codes and resolve as necessary.

vii. Perform all other preventive maintenance as outlined by the Original

Equipment Manufacturer.

d. Electrical System

i. Perform thermo-graphic analysis of combiner boxes, inverters, transformers, and conductor connections to buses, breakers or disconnects.

ii. Test all switches and disconnects to ensure they are not jammed.

iii. Complete DC Operating current tests.

iv. Check String-level open-circuit voltage.

v. Check I-V curve traces on strings.

vi. Check torque marks and re-tightening appropriate wiring connections to design specification torque force per manufacturer guidelines.

vii. Turn off and on logging and communications to ensure they are communicating and ensure battery backups are working.

e. Meteorological Station

i. Clean pyranometers and reference cells.

ii. Check calibration expiration on sensors and meters, including pyranometers and anemometers.

iii. Replace desiccant, if required.

f. Site Conditions

i. Clean PV Panel cages and arrays of debris, dust, and animal droppings using water only.

ii. Inspect roof penetrations to ensure sealant is applied properly and not degrading.

iii. Visually inspect and resolve all general site conditions for the area in which the Maintenance or Repair call is received, including but not limited to:

1. Electrical Equipment

2. Mounting Structures

3. Fencing

4. Shading

5. Trackers

6. Vegetation

7. Animal damage

8. Erosion

9. Corrosion

10. Discolored Panels

g. Annual module cleaning

i. Clean PV modules per industry best practices.

2. Preventative Maintenance & Repair Quotes

a. The Subcontractor shall provide quotes for preventative maintenance and repairs identified in the annual inspection. Also, provide quotes for as-needed maintenance or repairs.

i. Subcontract shall provide quote scheduled maintenance or repairs within one week of the request.

ii. Subcontractor shall provide emergency quotes within 24 hours of the initial request for emergency repair.

b. Quotes shall include:

i. Repair Labor Quote, including the estimated hours to complete the work and which labor categories apply.

ii. Repair Materials Quote, if applicable. NREL prefers manufacturer replacement parts. Third Party replacement parts require approval from the Technical Monitor.

iii. Estimated scheduling timeline for start date and completion date of the repair or maintenance request.

3. Preventative Maintenance & Repair Reports

a. The Subcontractor shall complete reports on all preventative maintenance and repairs within one week (5 business days) of completion of the task.

b. The Report shall include the following:

i. Record results of all maintenance and repair tasks, including the Date, Time, and Location of the task(s).

ii. Take photographs of any damage or defects identified and photographs of the completed maintenance or repair task(s).

iii. Inform NREL of any additional deficiencies identified beyond the original quoted labor, if applicable.

iv. Provide NREL with recommendations for corrective actions to prevent damage in the future, if applicable.

e) Key Personnel & Employee Certification Requirements

1. The Subcontractor shall provide at least two key personnel as primary contacts with phone numbers and email addresses.

2. All Key Personnel and Subcontractor employees working on-site must hold the following certifications/qualifications:

a. Licensed Electrical Contractor.

b. NABCEP PV installer certified and/or UL PV System installation certified

c. Experience with and on power generation systems.

d. Experience with DC electrical systems.

e. Certified in current version of NFPA 70E.

f. Familiarity with sections of the National Electric Code specific to PV

(section 690/691).

g. ASNT certified for planning and conducting thermal imaging (American

Society for Non-destructive Testing)

h. Meet NERC compliance for utility-scale systems.

3. All Subcontractor employees working on-site as Inspectors and PV Module/Array Specialists must meet the following qualifications:

a. NABCEP PV Installer Certification.

b. Two to Five (2 to 5) years of experience.

4. All subcontractor employees working on-site as Inverter Specialists must meet the following qualifications:

a. Certified in current version of NFPA 70E.

b. More than Five (5+) years of experience.

5. All subcontractor employees working on-site as Journeyman Electricians must meet the following qualifications:

a. 30 OSHA Card.

b. Trained in Arc-Flash, Lock-out/Tag-out, and special protective equipment training.

c. NABCEP PV Installer Certification.

d. Experience with DC electrical systems.

e. More than Five (5+) years of experience with PV systems.

6. All subcontractor employees working on-site as Master Electricians must meet the following qualifications:

a. Electrical Contractor’s License.

b. 30 OSHA Card.

c. Trained in Arc-Flash, Lock-out/Tag-out, and special protective equipment training.

d. NABCEP PV Installer Certification.

e. Experience with DC electrical systems.

f. More than Five (5+) years of experience with PV systems.

g. Certification by NERC.

7. Voltage levels are defined as:

a. Low Voltage: 0-1000VAC (480VAC is the current voltage at the NREL

SunPower PV Panel System inverters)

b. Medium Voltage: 1kV-35kVAC

c. High Voltage: 35kVAC-245kVAC

8. All subcontractor employees providing maintenance and repairs on the South Entrance Building must be trained in fall protection, lift and ladder training and must provide a Traffic Control Plan.

3) Locations:

Locations may be added, removed, and quantities per location may change over time at the discretion of NREL via mutually agreed-to modification.

a) South Table Mountain Site (STM), 15013 Denver West Pkwy, Golden, CO 80401.

1. SunPower PVS:

a. Egress Ingress Parking Structure (EIPS)

b. Visitor Parking Structure (VPS)

c. Research Support Facility II (RSF II)

2. SCHOTT Solar PVSs:

a. South Site Entrance Building

4) Tasks

Task Description Due Date 2.a. Annual Inspection – SunPower

PVSs Within 60 days of execution of Subcontract and annually during the same month for all subsequent inspections.

2.b. Annual Inspection Report – SunPower PVSs

Within 10 business days of completed inspection.

2.a. Annual Inspection –SCHOTT Solar

Within 60 days of execution of Subcontract and annually during the same month for all subsequent inspections.

2.b. Annual Inspection Report – SCHOTT Solar PVSs

Within 10 business days of completed inspection.

2.c. Active 24/7/365 On-Call Phone Number

Upon execution of Subcontract.

2.c. Preventative Maintenance Call Response

Within 48 hours of request.

2.c. Emergency Repair Call Response

Within 4 hours of request.

2.d.1. Preventative Maintenance and Non-Emergency Repairs

To be completed within two weeks (10 business days) from date of scheduling.

2.d.1. Emergency Repairs Response on-site within 24 hours of request.

2.d.2. Labor Quote Within one week (5 business days) of request for scheduled maintenance or repairs, within 24 hours for emergency repairs.

2.d.2. Materials/Parts Quote Within one week (5 business days) of request for scheduled maintenance or repairs, within 24 hours for emergency repairs.

2.d.3. Maintenance & Repairs Reporting

Within one week (5 business days) of completed maintenance or repair task.

5) Point of Contact:

a) The point of contact for scheduling on this subcontract is NREL Work Control Center (WCC) at (303) 384-7344. The Subcontractor is responsible to coordinate all questions, problems, or operational technical matters of this subcontract with the WCC.

6) Technical Monitor:

a) The Technical Monitor for this requirement is Donny Haupt, Donny.Haupt@NREL.gov, 303-913-3697.

7) Environmental, Safety, Health, and Quality (ESH&Q):

a) The Subcontractor shall submit an Environmental, Safety, and Health Risk Evaluation Worksheet.

b) The Subcontractor shall provide proper personal protection equipment.

c) The Subcontractor shall attend a NREL Contractor Safety Orientation meeting with a NREL Environmental Safety, Health, and Quality (ESH&Q) representative.

8) Working Hours:

a) NREL regular business hours are 8:00am to 5:00pm., Monday through Friday except

NREL recognized holidays. The Subcontractor personnel scheduled to work during non-working hours must notify the Site Entrance Building at (303) 384-6811.

b) Emergency repair will be available during normal business hours from 8:00 a.m.

through 5:00 p.m., Monday through Friday, except NREL recognized holidays.

In the event of emergency repairs outside normal business hours, the subcontractor will be notified by the NREL WCC.

c) The days designated as NREL holidays (i.e., New Year’s Day, Martin Luther King Jr.

Day, Memorial Day, Independence Day, Labor Day, Thanksgiving Day, Day after Thanksgiving, and Christmas Day) are not NREL workdays. If a NREL holiday falls on a Saturday or Sunday, the preceding Friday or the following Monday may not be a NREL workday.

9) Security:

a) All Subcontractor employees are to wear a NREL identification badge on their outer garment, upper portion of their body at all times while on the premises.

b) Subcontractors will not be allowed on site without badges.

c) All issued badges must be returned immediately to the Site Entrance

Building upon termination of the work at NREL.

d) The Subcontractor shall comply with all safety requirements as applicable at the following website: https://www.nrel.gov/about/ehs-construction.html

10) Maps:

Please reference the maps located on the NREL website links below. See Technical Monitor for additional information on locations as necessary.

a) Golden STM Campus: https://www.nrel.gov/about/golden.html

b) Flatirons Campus: https://www.nrel.gov/about/flatirons-campus.html https://www.nrel.gov/about/ehs-construction.html https://www.nrel.gov/about/ehs-construction.html https://www.nrel.gov/about/golden.html https://www.nrel.gov/about/flatirons-campus.html