PowerSupport@State.gov OBO/CFSM/FAC/PM/PEMP/PowerSupport 2017

EXHIBIT A - STATEMENT OF WORK

LOW VOLTAGE AUTOMATIC VOLTAGE REGULATORS

I. GENERAL INFORMATION:

The United States Embassy Santo Domingo requires professional services and contractor cost proposals to perform preventive maintenance services of the facility’s automatic voltage regulators (AVR).

II. PROJECT REQUIREMENTS:

The Contractor shall perform preventive maintenance as described in this STATEMENT OF WORK.

The objective of scheduled preventive maintenance is to eliminate system malfunction, breakdown and deterioration when units are activated/running.

DESCRIPTION OF EQUIPMENT *:

The attached equipment list provides details of the equipment to be maintained

AVR ORTEA SIRIUS 277/480V, 3200 Amp

III. GENERAL REQUIREMENTS:

The Contractor shall provide the labor, tools, and materials required to perform all preventive maintenance as outlined in this SOW. Embassy staff have service manuals for AVR’s on-site.

The contractor shall confirm government provided manuals are complete and current and provide the

Contracting Officer’s Representative (COR) a listing of any missing or out of date manuals. Contractor is to be certified by ORTEA

IV. SCOPE OF WORK - - AVR PREVENTIVE MAINTENANCE

Contractor shall provide all materials, supervision, labor, tools and equipment to perform preventive maintenance. All personnel working in the vicinity shall wear and /or use appropriate safety protection while all work is performed; LV-AVR manufacturer preventive maintenance procedures. Any questions or injuries shall be brought to the attention of the Post COR and Occupation Safety and Health Officer

(POSHO) immediately. Material Safety Data Sheets (MSDS) for all HAZMAT shall be submitted by the

Contractor for all HAZMAT materials. Copies shall be provided to the COR for approval.

The systems and components to be maintained include Power Circuit Board (PCB), isolating transformers, ventilation and lubrication systems, digital metering system, by-pass systems, as well as control and monitoring systems. The attached equipment list provides details.

1. The contractor shall provide the COR with a list of necessary parts and materials.

2. Oil, fluids, filters and preventive maintenance parts shall be provided at the expense of the U.S.

Govt.

a. Only fluids which meet or exceed manufacturer’s specifications shall be used.

b. All fluids shall be delivered in original sealed containers.

3. The contractor shall provide emergency assistance for generator support, priced at an hourly rate, within 24 hrs of being contacted by the COR.

4. The Government [will / will not] provide equipment for AVR testing: Single Phase Variac

(Variable Transformer), Multimeters.

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If any discrepancies are found with the AVR(s) that are not covered under this scope of work then the contractor shall provide the following:

1. Detailed report noting the discrepancy found.

2. Bill of Materials (BOM) to include component name, quantity, part #, and price for any repair material required and material lead time.

3. The contractor shall provide emergency assistance for AVR support within 24 hours of being contacted by the COR.

4. Price quote for repair labor.

SAFETY & SPECIAL INSTRUCTIONS:

1. Use appropriate personal protective equipment (PPE) when performing work.

2. Contractor shall conduct a safety meeting prior to the start of work.

3. Contractor shall provide a lead safety person prior to the start of work.

4. Check all work areas, tools, and equipment to ensure unsafe conditions are eliminated or guarded against.

5. Follow site safety procedures.

6. Schedule maintenance with operating personnel and affected offices (security).

7. Follow approved lockout/tag out procedures.

8. Lockout and disconnect the main power before tightening the main supply lugs in order to avoid the hazard of electrical shock, which could result in serious personal injury or death.

9. Review and follow the manufacturer’s instructions.

10. Record results in the equipment history log.

11. Remove lockout/tag out in accordance with appropriate procedures.

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

At a minimum, the contractor shall comply with the following:

Notes:

• Contractor shall submit to the COR for review, work sheet/checklist that will be used for performing maintenance service.

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

• Test and inspection report shall be submitted to the COR within three days of completing work.

• Laboratory report for all chemicals (oil, coolant or fuel analysis) shall be submitted to the COR within 30 days from date of service.

Maintenance Interval Schedule

The purpose of this Statement of Work is to ensure the automatic voltage regulators for this facility are maintained according to manufacturer’s recommendations to ensure the readiness and proper operation of the system.

Annual Schedule:

1. Coordinate site visit service dates with the embassy Facility Manager. Pre-arrange a switch over to maintenance bypass, or static bypass.

2. Open the covers and complete an infrared inspection. Make sure the equipment is at least 40% loaded and has warmed up before doing this inspection. Fix any problems you find after the AVR is deenergized. Don’t do this step if it cannot be done

3. Perform Lock-out/Tag-out of the AVR input power and verify a de-energized and safe working condition prior to accessing internal AVR components. Provide the approved Lock-out/Tag-out

SOP noting power isolation points and isolation steps in the final report.

4. Perform interior and exterior cleaning of the regulator. Remove panels and clean dust, dirt, and foreign particles.

5. Ensure that all the ventilation fans are functioning correctly.

6. Replace any failing fans using government provided spares.

7. Inspect all connections, components, and internal wiring for signs of overheating or damage.

8. Spot-check a minimum of 20% of all power connections for proper torque, and connection tightness. If any are found to be improperly torqued, check all connections.

9. Check and verify system output voltage adjustments.

10. Check all logic adjustments, meter parameters and settings.

11. Test all AVR alarms and remote alarm panels.

12. Perform all functional tests and calibrate unit.

13. For SVR1 step voltage regulators:

a. The following checks can be made while the regulator is in service. Output voltage should be monitored during the procedure using a voltmeter connected to the control unit’s test terminals.

b. Make sure the regulator is “IN-BAND” and that line droop compensation is set to zero

(Return line droop compensation to the proper setting after completing the checklist).

c. Verify that the voltmeter indicates a voltage within one-half of the bandwidth tolerance.

d. Place the AUTO/MANUAL switch in the “MANUAL” position.

e. Using the RAISE/LOWER switch run the tap changer several steps in either direction, until control panel indicates an out-of-band condition.

f. Return the AUTO/MANUAL switch to the “AUTO” position. After a time delay, the control will automatically return the regulator to an in-band condition.

g. Repeat steps 3 through 5, but in the opposite direction.

h. Check operation of the HI-AMP™ limit switches (located on the either side control position indicator) by attempting to run the regulator beyond the limits set by the switches. The limit switches should stop tap changer operation at the corresponding tap position.

14. For insulating fluid:

a. Withdraw a sample of the insulating fluid using the sampling device located in the drain valve at the bottom of the tank.

b. Measure the dielectric strength of the oil per ASTM D-877. If found to be below 24 kV, the oil should be filtered and retested. Other tests such as “neutralization number,”

“interfacial tension,” and “power factor” are also useful and may be desired by some users.

c. Add oxidation inhibitor (2,6-ditertiary-butylpara-cresol, DBPC) to the insulation fluid at a concentration of 0.2 to 0.3 percent, to replace inhibitor that is naturally depleted over a period of a few years.

15. For oil filled AVR (where applicable)

a. Perform regeneration of AVR oil.

b. Perform oil rigidity test and submit lab test value to COR along with recommendations.

16. For oil filled AVR’s where the oil level in the regulator has been lowered to a level that exposes part or all of the coils to air or the internal assembly has been removed from the tank perform the following procedure:

a. Every container or tote of transformer oil used in the filling process should be visually inspected and tested for water or other possible contaminants before proceeding with the filling process.

b. If the coils are out of oil for more than four hours, the coils must be baked for at least 24 hours at a temperature of 100°C (212°F) prior to re-tanking the internal assembly. The tap changer must not be exposed to a temperature above 110°C (230°F). The unit should not be re-baked more than two times.

c. Connect the vacuum pump suction line to the pressure-vacuum fitting near the top of the tank.

d. Connect the oil fill line to the tank at the bottom drain valve connection.

e. Start the vacuum pump.

f. When the vacuum level inside the tank reaches 2000 microns (2 Torr) start timing. When this vacuum level has been maintained for a minimum of 1 hour the oil filling may be started.

g. Continue to fill the unit until the oil level fills the sight glass (25°Coil level).

h. After the oil filling has been completed, continue to hold the vacuum level for 1 additional hour.

i. If vacuum oil filling is not possible, the re-tanked internal assembly should be allowed to soak in oil for at least five days before energizing.

17. Restore the AVR to its online condition. If any discrepancies prohibit the unit from supporting the load, notify the COR and post FM of these discrepancies immediately.

18. Remove any rust found and repaint.

19. Make sure all enclosure doors open and close easily.

20. Test all interlocks.

21. Remove lockout/tag out in accordance with approved procedures. Ensure proper system operation and work acceptance by the government prior to leaving site.

22. Recheck problem areas found during the infrared inspection.

23. Provide the Post Facility Manager with a spare parts and consumables Bill of Materials (BOM) noting any required or suggested material replacements not presently onsite, along with the item’s part number, unit price, and availability.

24. Provide deliverables listed in Paragraph 10 of the base requirements.

a. Discrepancy reports and costs as described in paragraph IV

b. Completed maintenance checklist for each AVR

c. Applicable test and calibration reports

d. Narrative summary of all checks findings, and conditions. Include all input and output voltage, amperage, and frequency readings.

Spare Parts and Expendables Inventory.

American Embassy XXXX UNCLASSIFIED U.S. Department of State

Equipment List:

AVR ORTEA SIRIUS 277/480V, 3200 Amp

END OF STATEMENT OF WORK