Attachment 1 - Statement of Work.pdf

STATEMENT OF WORK

FOR

ASSESSMENT FOR REPAIR OF

SUBSTATION ON-LINE TAP CHANGERS

June 2024

FA462024AQ961 Attachment 1 - Statement of Work

Statement of Work For

Assessment for Repair of Substation On-Line Tap Changers

Fairchild AFB, WA

1. BACKGROUND:

Periodically, the On-Load Tap Changer (OLTC) has experienced out of alignment conditions with the Schweitzer SEL-2414 controller relay, resulting in out-of-parameter (high/low) output voltages feeding Fairchild AFB. The 92d Civil Engineering Squadron has requirements to maintain reliable and efficient Substation Transformer and OLTC operation through inspections, testing, and maintenance per AFI 32- 1064, TO 35-1-39, UFC 3-550-03, AFMAN 32-1084, and manufacturer recommendations, as applicable.

2. SCOPE OF WORK:

The Contractor shall provide all labor, materials, and equipment necessary to perform a complete assessment of each substation’s transformer, OLTC, and associated equipment (collectively referred to as “Equipment”) to determine condition, operational characteristics, functionality, and reliability.

3. OBJECTIVES:

The primary objectives of this Statement of Work (SOW) are to:

a) Evaluate the current condition of Substation Transformers, OLTCs, and associated equipment.

b) Identify any existing or potential issues.

c) Document and recommend necessary maintenance actions.

d) Ensure compliance with relevant standards and guidelines.

e) Provide a detailed report with recommendations for ongoing maintenance.

f) Return equipment back into service following the assessment.

4. REQUIREMENTS:

4.1 Initial Inspection and Documentation Review

a) Review existing maintenance records, operational logs, and any previous inspection reports.

b) Conduct a visual inspection of Equipment for signs of wear, damage, oil leaks, and other abnormalities.

c) Verify the Equipment’s operational settings and historical performance data.

4.2 Electrical Testing

a) Perform insulation resistance testing to ensure the integrity of the insulation system.

b) Conduct contact resistance testing to evaluate the condition of the tap changer contacts.

c) Execute functional tests to verify the smooth operation of OLTCs across all tap positions.

4.3 Oil Analysis

a) Collect oil samples from OLTCs and conduct Dissolved Gas Analysis (DGA) to detect any signs of electrical or thermal degradation.

b) Perform oil quality tests, including moisture content, acidity, and dielectric strength.

4.4 Mechanical Inspection and Maintenance

a) Inspect mechanical components, including drive mechanisms, gears, and bearings.

b) Clean and lubricate moving parts as necessary.

c) Check and adjust the alignment of the tap changer mechanism.

4.5 Compliance and Safety Checks

a) Ensure Equipment complies with relevant industry standards, including AFI, TO, UFC, AFMAN, IEEE, IEC, and NETA guidelines. See Appendix A for details.

b) Verify safety protocols are followed during maintenance activities.

4.6 Reporting and Recommendations

a) Document all findings, test results, and maintenance activities performed.

b) Provide a detailed report highlighting any issues identified and recommend corrective actions.

c) Suggest a schedule for preventive maintenance and any immediate repairs needed to bring

Equipment to full working order. Upon conclusion, provide deliverables report as explained in section 4.9 listed below.

4.7 Facilities (w/Facility Number) include:

a) North Substation (2510)

b) South Substation (1270)

4.8 Existing equipment may include but are not limited to the following make / model / spec:

a) North Substation (2510):

i) Current Transformer / General Electric / 160200B, 10,000 KVA

ii) On-Load Tap Changer / General Electric /

iii) Transformer Monitor / Schweitzer Engineering Laboratories (SEL) / SEL-2414

b) South Substation (1270):

i) Current Transformer / Delta /

ii) On-Load Tap Changer / Reinhousen /

iii) Transformer Monitor / Schweitzer Engineering Laboratories (SEL) / SEL-2414

4.9 Deliverables report, by facility:

a) Inspection report of system condition

b) Performance report of system

c) Testing and acceptance criteria

d) Findings report

e) Itemized list of required repairs with material and labor costs per structure/system with applicable listed code/justification for said repair.

f) Itemized list of recommended repairs with material and labor costs per structure/system with applicable listed code/justification for said repair.

g) Itemized preventive maintenance action plan recommended to best service the assets/system for safety and reliability.

5. SECURITY REQUIREMENTS: All personnel employed by the Contractor in the performance of this contract, or any representative of the Contractor entering the government installation, shall abide by all Fairchild Air Force Base security regulations. Personnel performing the work requested will be escorted for the duration on the installation. Individuals must be able to pass a background check that will be conducted prior to entry of the installation. Individuals performing the work will be required to provide their full name, DOB, SSN, driver’s license issuing state and license number to gain access to the installation.

6. GENERAL INFORMATION:

6.1. HOURS OF OPERATION: Hours of operation are 0700-1630 Monday through Friday, excluding Federal Holidays and any other designated down day. Work can be done at other than the normal hours of operation with the approval of the Contracting Officer. The contractor shall coordinate in advance all hours of work and any service interruptions with 92d Civil Engineering Squadron points of contact.

January 1 New Year’s Day

3rd Monday in January Martin Luther King, Jr. Day 3rd Monday in February President’s Day Last Monday in May Memorial Day June 19 Juneteenth July 4 Independence Day 1st Monday in September Labor Day 2nd Monday in October Columbus Day November 11 Veterans Day

4th Thursday in November Thanksgiving Day December 25 Christmas

7. APPENDICES:

Appendix A: References Appendix B: Facility Listing

Appendix A: References

1. Unified Facilities Criteria (available on wbdg.org)

2. NFPA 70 – National Electric Code (NEC)

3. NFPA 70B – Standard for Electrical Equipment Maintenance

4. NFPA 70E – Standard for Electrical Safety in the Workplace

5. AFI 32-1064 - Electrical Safe Practices

6. TO 35-1-39 - Electrical Power Distribution Maintenance

7. UFC 1-200-01, General Building Requirements

8. UFC 3-501-01, Electrical Engineering

9. UFC 3-550-03, Operation and Maintenance: Exterior Electrical Power Distribution

10. UFC 3-560-01, Operation and Maintenance: Electrical Safety

11. AFMAN 32-1084 - Facility Requirements

12. Manufacturer recommendations

Appendix B: Facility Listing

Structures to be evaluated:

1. Main Side Substation (2510)

2. SERE Side Substation (1270)

1. BLDG 2510 OLTC (top arrow) and Controller (bottom arrow)

2. Bldg 1270 OLTC (bottom arrow) and Controller (top arrow)