2-Attachment B.pdf

IFB 2000004382

Attachment B

TECHNICAL SPECIFICATIONS

1. GENERAL REQUIREMENTS:

1.1. Low and medium voltage Switchgear circuit breakers and protection relays are at the following locations:

FAIRFAX COUNTY FACILITIES

Facility Address Hours for Deliveries and

Site Inspections

Noman M. Cole, Jr. Water Recycling Facility (NMCWRF)

9939 Richmond Highway Lorton, VA 22079

6:00 AM - 2:30 PM

Monday-Friday

Accotink Pump Station 9201 Richmond Highway Fort Belvoir, VA 22060

6:00 AM - 2:30 PM

Monday-Friday

Holmes Run Pump Station 6623 Dearborn Drive

Falls Church, VA 22044

6:00 AM - 2:30 PM

Monday-Friday

Freund House Pump Station 5404 Old Mill Rd

Alexandria, VA 22309

6:00 AM - 2:30 PM

Monday-Friday

Difficult Run Pump Station 9950 Colvin Run Rd

Great Falls, VA 22066

6:00 AM - 2:30 PM

Monday-Friday

Little Hunting Creek Pump Station 8600 Stockton Parkway Alexandria, VA 22308

6:00 AM - 2:30 PM

Monday-Friday

Huntington Levee Pump Station 5755 Mount Vernon Dr Alexandria VA 22303

6:00 AM - 2:30 PM

Monday-Friday

Long Branch Pump Station 8750 Telegraph Rd Lorton VA 22079

6:00 AM - 2:30 PM

Monday-Friday

*Please note that all locations are in operation 24 hours per day/seven days per week.

1.2. The Contractor must comply with the National Electric Code (NEC), NFPA 70E, NETA, NESC, National, and Local Codes.

1.3. The Contractor must have an associate dedicated to parts research and availability for the repair of electrical switchgear components.

1.4. The Contractor must provide detailed field test reports showing the as-found and as-left equipment conditions, protection settings, for all tested equipment.

1.5. All testing must be performed objectively according to standards, not limited to NETA / ANSI standards.

1.6. Testing is typically performed once every 3 years and will be coordinated with the Department and Contractor when needed.

1.7. All equipment required to perform the work scope, such as special lifting, transporting, or racking devices, will be furnished by the Contractor.

1.8. No additional work is to be performed without written authorization signed by the owner’s designated representative.

1.9. Contractor must perform all work items per the most current OSHA and NFPA 70E requirements to include current Lock-out Tag-out requirements.

1.10. Contractor should provide the electrical safety manual to WWM Safety Managers (2) for review after their first assessment.

2. SITE SAFETY:

2.1. The Contractor shall secure the Noman M. Cole, Jr. Water Recycling Facility and all other locations identified in this IFB. The Contractor must ensure that all work areas are protected to prevent unauthorized access and reduce the risk of injury to its employees, County personnel, the Facility’s personnel, agents, and the public. Appropriate safety measures may include temporary guardrails, fencing, barricades, cones, warning signs or tape, and other suitable means, as directed by the County’s Point of Contact (POC). Hazards may include, but are not limited to, mechanical hazards, electrical hazards, surface irregularities, tools, and equipment.

2.2. The contractor shall schedule and coordinate the work and install temporary facilities as required to maintain continuous operation and access to existing equipment in the area of work. The contractor shall not commence retrofit work until authorized by POC. The Contractor is advised that Noman M.

Cole, Jr. Water Recycling Facility may at its sole discretion delay or stop work as required to ensure continuous and reliable operation of the facility, especially during peak flow events. Any monetary claim due to delay or stopping work may be submitted to the POC for compensation review as appropriate.

2.3. Noman M. Cole, Jr. Water Recycling Facility may restrict parking or require parking permits for vehicles to be brought onto the plant. The Contractor shall be responsible for arranging transportation for its personnel to reach the job sites from whatever parking area is provided by Noman M. Cole, Jr.

Water Recycling Facility.

3. TECHNICAL SPECIFICATIONS FOR TESTING AND PREVENTATIVE MAINTENANCE:

3.1. Medium Voltage Switchgear (600V- 4160V), Vacuum Circuit Breakers:

A. Remove each breaker from its compartment. Inspect for abnormal wear or overheating.

Discoloration of the surfaces is not harmful unless corrosion due to atmospheric conditions is severe, resulting in deposits on the surface. Check each breaker while it is out of the housing for all items recommended in accordance with the manufacturer’s published data.

B. Perform insulation resistance tests for one minute on each pole, phase-to-phase, phase to ground with the circuit breaker closed, and across each pole with the breaker open. Apply voltage in accordance with the manufacturer’s published data, using industry standards.

C. Visually check and manually operate mechanical moving parts such as the shutter, switch assemblies, the position interlock, hinged doors, and the drawout features of the auxiliary assemblies. Examine mechanical mating parts such as the breaker secondary contacts, blocks, guide rails, and trippers. Grease the racking screw and the plunger/operating mechanism.

Lubricate with the appropriate contact lubricant. Perform all mechanical operation tests in accordance with the manufacturer's published data.

D. Perform secondary injection test.

E. Infrared Thermography is required for all switchgears and MCCs.

F. Test the breaker operation and performance to ensure the proper operation of the breaker.

G. Test mechanism charge, trip-free, and anti-pump functions.

H. Inspect vacuum bottle assemblies and perform a vacuum bottle integrity (dielectric withstand voltage) test across each vacuum bottle with the breaker in accordance with the manufacturer’s specifications.

I. Inspect physical and mechanical condition, perform as-found tests, and clean the unit. Use appropriate lubrication on moving current-carrying parts and on moving and sliding surfaces.

J. Cleaning of the entire switchgear, breaker, cubicle, and contacts, and removing dust from buses, connections, supports, and enclosure surfaces. Ensure housekeeping has been done.

K. Submit a record of all test results and maintenance performed on each breaker.

3.2. Low Voltage Switchgear and Circuit Breakers:

A. Cleaning of the entire switchgear, breaker, and cubicle, including the contacts, and removing dust from buses, connections, supports, and enclosure surfaces.

B. Remove each breaker from its compartment. Inspect for abnormal wear or overheating.

Discoloration of the surfaces is not harmful unless corrosion due to atmospheric conditions is severe, resulting in deposits on the surface. Check each breaker while it is out of the housing for all items recommended in accordance with the manufacturer’s published data.

C. Visually check and manually operate mechanical moving parts such as the shutter, switch assemblies, the position interlock, hinged doors, and the drawout features of the auxiliary assemblies. Examine mechanical mating parts such as the breaker secondary contacts, blocks, guide rails, and trippers. Grease the racking screw and the plunger/operating mechanism.

Lubricate with the appropriate contact lubricant. Perform all mechanical operation test in accordance with the manufacturer's published data.

D. Inspect for signs of overheating or weakened insulation. Remove dust from buses, connections, supports, and enclosure surfaces.

E. Perform secondary injection test.

F. Infrared Thermography is required for all switchgears and MCCs.

G. Perform phase-to-phase and phase-to-ground insulation resistance tests in accordance with

ANSI standards.

H. Test the overcurrent trip devices with their respective factory test sets.

I. Ensure the proper operation of the breaker.

J. Submit a record of all test results and maintenance performed on each breaker.

3.3. Protection Relays: Arc Protection Relay, Feeder Protection Relay, Motor Protection Relay, Phase Monitoring Relay:

A. Instruments, relays, and other panel-mounted devices. Individual devices should be maintained and tested in accordance with the manufacturer's published data, according to the specific instructions supplied for each device.

B. Remove all relay covers and inspect and clean the interiors.

C. Ensure the proper operation of the relays.

D. Submit a record of all test results and maintenance performed on each relay.