Statement of Work B302 CHP Electrical Preventative Maintenance Service For National Institute of Standards and Technology (NIST)

1.0 BACKGROUND

The National Institute of Standard and Technology (NIST) has a requirement for electrical maintenance services of the Combined Heat and Power (CHP) system at Central Plant of Building 302. These maintenance services shall be performed on major electrical equipment of the CHP system per the Energy Saving Performance Contract (ESPC) NIST responsibility matrix. The maintenance services shall be performed according to recommendations from the original equipment manufacturer, and from the latest version of ANSI/NETA MTS. The CHP electrical equipment for maintenance service includes but is not limited to: 4160V switchgear, 13.8 KV liquid filled transformer, high voltage air switches, Motor control center, dry typed transformer, UPS, panel boards, battery bank and charger.

The maintenance service will be performed during one of two scheduled CHP system shutdowns, either during 2026 Fall Outage (in October) or during the 2027 Spring Outage (in April); with the following:

· The CHP Generator will be scheduled with approximately 5-day Co-gen system shutdown, from Friday to Wednesday following week.

· A complete CHP system is scheduled with a complete shutdown for 36 hours after a complete generator shutdown. All equipment in CHP system is de-energized. This takes place during the Afterhours and the Outage weekend.

· After scheduled 36-hour shutdown, the 4160V switchgear and 13.8 KV transformer are energized (With feeder FC-9 energized) to provide power to associated equipment including CHP lighting.

· The Co-Gen is tentatively scheduled to shut down on Friday evening, and to start up on Wednesday.

· The Period of Performance: 10/01/2026 - 06/30/2027.

Note: The service in the Fall Site-wide Outage (October 2026) is preferred. However, the service may take place in the Spring Outage (April 2027).

NOTE: There will be other contractors performing services at the CHP system during the Site-wide Outage. All work needs to be coordinated through the COR with other Contractors so there are no conflicts.

2.0 OBJECTIVE

This Contract shall provide preventative maintenance, repair, and testing service for high, and low voltage electrical equipment of the Combined Heat and Power (CHP) system at the Central Plant (Building 302) of National Institute of Standard and Technology (NIST) Gaithersburg.

3.0 SCOPE OF SERVICE

The Contractor shall provide all labor, transportation, equipment, materials, expertise, tools, supervision, and management required to provide complete maintenance, cleaning, inspection, repair, and testing of existing high voltage switchgear, WLI, low voltage switchboard, liquid filled transformer, dry type transformers, motor control center, electrical panel boards, batteries, and battery charger.

1. Perform maintenance service including inspection, cleaning, and testing of the electrical equipment according to recommendations from the attached O&M and from the latest version of ANSI/NETA MTS. the latest version – Standard for Maintenance Testing Specifications for Electrical Power Distribution Equipment and Systems.

2. IR scanning of all electrical equipment. Medium voltage equipment can be performed with Ultrasound devices.

3. Provide maintenance service of one CHP 5KV switchgear, SG-4001. Refer to Attachment C, 4160V Switchgear SG4100, for recommended tasks by Johnson Control Inc (JCI) for inspection and maintenance service. For testing breakers and relays of the switchgear, refer to Attachment G, Arc Flash Study, for current setting of the protective devices (breakers, relays, fuses)

4. Provide maintenance service of one (1) CHP 480V Motor Control Center, MCC-7, 6 sections, 20 buckets. Refer to Attachment C, 480V Motor Control Center MCC-7, for recommended tasks by Johnson Control Inc (JCI) for inspection and maintenance service.

5. Provide maintenance service of one (1) CHP step up transformer, TL-1301, 4160V to 13.8KV, 8.4 MVA. Refer to Attachment C, 4160V t0 13.2 KV step up transformer TL 1301, for recommended tasks by Johnson Control Inc (JCI) for inspection and maintenance service.

6. Provide maintenance service of one (1) CHP Dry typed transformer, TD-4001, 4160V to 480V, 750 KVA. Refer to Attachment C, 4160V to 480V Dry type transformer TD-4001, for recommended tasks by Johnson Control Inc (JCI) for inspection and maintenance service.

7. Provide maintenance service of one (1) dry type transformer. 480V: 208/120V, 75 KVA. Refer O&M NETA MTS for inspection and maintenance service.

8. Provide maintenance service for two battery banks and three chargers. Refer to O&M and NETA MTS inspection and maintenance service.

9. Provide maintenance service for the electrical panels, 4 panels. Refer to O&M and NETA MTS inspection and maintenance service.

10. Refer to Section 9 for the Attachment list.

4.0. QUALIFICATIONS OF TESTING ORGANIZATION AND CONTRACTOR PERSONNEL

4.1. Testing Organization

The testing organization shall be an independent, third-party entity which can function as an unbiased testing authority, professionally independent of the manufacturers, suppliers, and installers of equipment or systems being evaluated.

The testing organization shall be regularly engaged in the testing of high voltage electrical equipment devices, installations, and systems.

The testing organization shall use technicians who are regularly employed for low voltage and medium voltage testing services. The testing organization shall possess a designation of "NETA Accredited Company" issued by the International Electrical Testing Association in consonance with the criteria specified herein. The testing organization shall submit appropriate documentation to demonstrate compliance with these requirements.

4.2. Testing Personnel

Technicians performing electrical tests and inspections shall be trained and experienced concerning the apparatus and systems being evaluated. Testing personnel shall be capable of conducting the tests in a safe manner and with complete knowledge of the hazards involved. Testing personnel shall be able to evaluate the test data and make judgments on the serviceability of the specific equipment.

Technicians shall be certified in accordance with ANSI/NETA ETT-2022, Standard for Certification of Electrical Testing Personnel.

Each on-site crew leader shall hold a current certification, Level III or higher, in electrical testing. This certification shall be in accordance with ANSI/NETA ETT-2022, Standard for Certification of

4.3. Electrical Testing

The Contractor shall perform the following tests as appropriate for each electrical system and/or item of equipment:

· Transformers over 600V Primary – insulation resistance test (megger) and analysis of oil sample.

· Transformers under 600V Primary – clean, tighten all connections, and perform insulation resistance test (megger) on the primary side.

· High Voltage Air/Vacuum Circuit Breakers – contact resistance, insulation resistance test (megger), dielectric withstand test (ac hi-pot test), breaker testing, relay testing, and operational check.

· Protective Relays - calibrate setting levels per manufacturer's instructions and perform trip checks to appropriate devices.

· Batteries and Chargers - measure cell voltage, specific gravity, and charge rate. Perform intercell connection resistance test and battery string impedance test.

· 15 KV Ground and Test Breakers – contact resistance, insulation resistance test (megger), dielectric withstand test (ac hotpot test), and operational test.

· Switchgear and Switchboards Busses – clean and tighten all connections. Perform insulation resistance test (megger) and bus resistance. Where applicable, test ground fault relays with primary voltage.

· Thermographic inspection (infrared scanning) of all contact points, connections, splices, fuses, overloads, etc.

· Low Voltage Draw out Air Circuit Breakers - contact resistance, insulation resistance test (megger), secondary injection test, and verify all auxiliary devices.

· Busways – contact resistance and insulation resistance test (megger).

· Motor Control Centers (MCCs) – Tighten connections throughout MCC and in each bucket. Perform insulation resistance test (megger) on the main bus.

· Network Protectors – contact resistance, insulation resistance test (megger), and relay calibration.

· Fused Switches – contact resistance across switch blades and across isolated fuses.

The Contractor shall follow the Maintenance and Testing requirements identified in ANSI/NETA MTS-the latest version – Standard for Maintenance Testing Specifications for Electrical Power Distribution Equipment and Systems.

6.0. MANAGEMENT

The Contractor shall manage the total work effort associated with the maintenance, inspection, testing, and all other services required to ensure fully adequate and timely completion of these services. This includes, but is not limited to, planning, scheduling, report preparation, establishing and maintaining records, and quality control. The Contractor shall provide an adequate staff of personnel with the necessary management expertise to ensure the performance of work in accordance with sound and efficient management practices.

All work that requires electrical outage shall be performed during one of the Co-gen systems shut down, which will occur during the Site-wide outage. The specific dates of the Site-wide Outage will be provided when known.

The complete CHP outage is tentatively scheduled from 6:00 pm on Friday to Sunday at noon.

Any work that does not require an electrical outage may be performed during normal hours (Monday through Friday between the hours of 7:00AM and 6:00PM).

7.0. SAFETY AND SPECIAL INSTRUCTION

· Use appropriate personnel protective equipment (PPE) when performing work.

· Check all work area, tools, and equipment to ensure unsafe conditions are eliminated.

· Follow approved lockout/tagout procedure.

· Review and follow the manufacturer’s instruction.

· Record results in the equipment history log.

· Report all incidents and near missed incidents to COR and assist as requested in the investigation and corrective action.

· Submit to the COR for review, work sheet/check list that will be used for performance maintenance service.

· A discrepancy report shall be submitted to the COR immediately upon discovery of any condition that could result in equipment failure.

8.0. DELIVERABLES

· Provide Job Hazard Analyses within three (3) weeks after the award for approval. The JHA must be approved prior to Notice to Proceed. (No Kickoff meeting is required for this service project)

· Provide personnel NETA certifications for field service personnel.

· Provide work schedule two (2) weeks prior to Scheduled NIST site-wide Outages. Prefer to 2026 Fall outage schedule for service. If not ready for Fall Outage, service shall be scheduled for Spring Outage (April 2027)

· Within four (4) weeks from the last electrical testing, provide the final report one (1) digital copy. The final report shall include, as a minimum, the following: summary of project, description of equipment tested, description of tests, test data, analysis and recommendations.

9.0. ATTACHMENTS

1. Attachment A: Drawings CHP Electrical

2. Attachment B: Electrical Equipment List

3. Attachment C: CHP Maintenance Plan

4. Attachment D: NIST Electrical Safety

5. Attachment E: Guideline for Contractor

6. Attachment F: NIST Control of Hazardous Energy LO/TO

7. Attachment G: Arc Flash Study