AJXF 20-1532 - Repair Transformers Buildings 2266 and 3623 SOW.docx

Statement of Work Repair Transformers, Buildings 2266 & 3623

AJXF 20-1532 & AJXF 20-1534

STATEMENT OF WORK FOR

REPAIR TRANSFORMER, BUILDINGS 2266 & 3623

AJXF 20-1532 & AJXF 20-1534

6 January 2020

PART I – GENERAL

1) SCOPE SUMMARY B-2266/3623:

The contractor shall provide all plant, labor, equipment, appliances, materials and supervision in performing all operations required to replace existing service transformers, modify concrete pads and replace primary cable for both facilities. The concrete pads shall be modified as required to accommodate the size of new transformers in both buildings. The contractor shall visit the job site and gather all related required data for the project prior to submitting the cost proposal. All work shall be accomplished in accordance with applicable Unified Facilities Criteria (UFC), specifications, drawings, National Electrical Code (NEC), JB Andrews’s Electrical Guideline and all applicable local, County, State and Federal regulations codes.

2) DEMOLITION:

a) The contractor shall disconnect, remove and dispose existing pad mounted transformers and all associated hardware in buildings 2266 and 3623.

b) The contractor shall disconnect the secondary cables from 480 volt outdoor transformer in building 3623 and abandoned in place.

c) The contractor shall disconnect and remove primary cables from the medium voltage switch to transformers in buildings 2266 and 3623.

d) The contractor shall disconnect and remove 480/277 volt panel located in the main electrical room in building 3623.

e) The contractor shall dispose all removed materials following the environmental requirements for recycling and disposal of waste materials.

3) WORK LOCATIONS AND SITE CLEANING:

a) The new work shall be performed inside and outside building 3623. The new work for building 2266 shall be done outside.

b) The contractor shall accomplish daily site cleanup. It shall be the responsibility of the contractor to dispose of waste materials from the work site, for example:

electrical equipment/devices, rags, oil, metal scraps and cuttings and construction debris. All debris shall be cleaned up each day.

c) The contractor shall not use any of the installation dumpsters for disposal. All materials removed shall be disposed of by the contractor at an off base site, meeting all local, County, State and Federal regulations.

4) SECURITY REQUIREMENTS:

a) 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 security regulation of the installation.

b) Base Access. In order to obtain base passes for personnel, contractor shall provide on company letterhead to the contracting officer the following: Employee's name, employee's date of birth, social security number and driver's license number and state of issue. Vehicle registration, proof of insurance and a valid driver’s license must be presented for all vehicles entering the installation. The base will provide escorts for work inside the airfield operational fence.

5) CONTRACTOR EMPLOYEES /SUPERVISION:

a) The contractor shall at all times provide adequate supervision of his employees to ensure complete and satisfactory performance of all work in accordance with the terms of the contract.

b) The contractor agrees to utilize factory trained and certified installers when equipment installation instructions require it for warranty purposes. Personnel shall be responsible, experienced and capable in performing the tasks on this contract. The contractor may be asked to remove persons assigned to this contract if such individual is identified to the contractor by the contracting officer as a potential threat to the health, safety, security, general well-being or operational mission of the installation and its population.

6) CONTRACTOR VEHICLE ROUTE / MAINTENANCE OF TRAFFIC:

a) Vehicles shall enter and exit JB Andrews through the Pearl Harbor Gate and proceed to the work site. The contractor shall cover openbodied vehicles transporting materials, equipment, dirt, construction debris, rubble or other material, which may become airborne and create air pollution on base.

b) The contractor shall provide and relocate, as necessary or as directed, airfield barricades and pavement closure markers in accordance with the project phasing plan to maintain airfield operations, as well as a safe airfield during construction in accordance with the applicable base and USAF project requirements.

c) The contractor shall provide cones and safety ribbon to maintain traffic and a safe work area during construction in accordance with the applicable codes and regulations of the state of Maryland and federal safety regulations.

7) HOURS OF OPERATIONS:

a) The contractor shall establish a work schedule, which requires work to be performed from 0700hrs to 1700hrs, Monday through Friday.

b) The contractor shall provide in writing, to the contracting officer any request to work additional hours (overtime).

8) GOVERNMENT FURNISHED ITEMS AND SERVICES:

a) Water and electricity shall be furnished to the contractor by the government from existing system outlets and supplies at no cost to the contractor.

9) WARRANTIES:

a) The contractor warrants that work performed under this contract shall conform to the contract requirements and shall be free of any defects. The contractor shall remedy at the contractor's expense any defects noted by the contracting officer.

PART II: MAJOR ITEMS OF CONSTRUCTION WORK

The following is a list of major items of work to be performed by the contractor.

The list is general in nature and is not intended to be a complete listing of every minor operation of work to be accomplished for a complete job.

1. The contractor shall provide dead front loop feed, outdoor, NEMA-3R delta-wye three phase systems oil filled pad-mounted transformer with copper windings. The transformers ratings shall be 1-300KVA, 13.2KV-480Y/277 volt for building 2266, and 1-112.5KVA, 13.2KV-208Y/120 volt for building 3623. All transformers shall be 60 hertz, 4-wireequipped with a T-blade–four position sectionalizing switch and equipped with a tap changer to change the voltage from one operating voltage to another. The transformers shall have oil level gauge, oil temperature gauge, pressure and vacuum gauge, pressure relief devise, drain valve with sampler in LV compartment. It shall have primary BIL 95 KV and secondary BIL 30KV. It shall have 15KV arrestor, current transformers and fuse block with adequate size fuses. The contractor shall serve the parking lights in building 3623 directly from the secondary side of the new transformer and remove the second transformer concrete pad.

2. The contractor shall provide a step up dry type transformer for building 3623. The transformer ratings shall be 112.5KVA, 208V delta-480/277volt wye, 3-phase, 60 Hz and 4-wire. The transformer shall be located inside the main electrical room.

3. The contractor shall provide new or modify existing concrete pads. The concrete pads shall be modified or provide new as required by JB Andrews’s guideline for transformer concrete pads. The size of the concrete pads shall be adequate for the equipment size.

4. The contractor shall provide new panel equipped with 225 amp main breaker, 480/277 volt, 3-phase, 4-wire. The contractor shall install existing 20 amp 3-phase breakers to new panel and provide 1-150 amp, 3-phase breaker. The new panel and associated breakers shall have not less than 22K amp symmetrical rating

5. The contractor shall provide existing 208/120 volt, main distribution panel 1-300 amp, 3-phase breaker to feed new step up dry type transformer. The new breaker must fit in the existing panel and have same AIC rating.

6. The color of the transformers shall comply with federal specification 595-20045 and match other existing equipment at Joint Base Andrews Air Force Base.

7. The contractor shall provide adequate grounding and bonding to new transformers and new panel. The ground rods shall be copper clad steel with diameter adequate to permit driving to full length of the rod, but not less than 3/4” diameter and 10’ long.

8. The contractor shall provide new cable type THHW/THWN copper from the main 208/120 volt distribution panel to the primary side of new dry type transformer and from the secondary side of new transformer to 480/277 volt new panel. Cable size shall be 2/0, 4-wire in 3-inch metal type conduit for the secondary side of the transformer and 500MCM on the primary side of the transformer.

9. The contractor shall reroute conduit and wires to parking light from the service transformer to the parking light

10. The contractors shall replace the primary cables from the nearest high voltage switch to the new service transformers. New cables shall be installed in existing duct banks and remove existing aged cables. The contractor shall match existing size cable and be type EPR with 133% level of insulation

11. The contractor shall conduct hi-pot test on new primary cables and megger testing for secondary cables. The test result for both shall be submitted to CE.

12. The contractor shall labels all new equipment, transformers, panel and provide panel schedules.

13. The contractor shall notify government contracting officer through construction construction representative for any power outage three (3) weeks in advance.

PART III- QUALITY CONTROL

1) Grass and lawns where work is done shall be restored to prior original conditions. Existing gravel road, pavements, curb, gutter, and sidewalks that are to remain and are damaged by the contractor, shall be replaced in full sections and/or blocks at the contractor’s expense.

2) The same applies to any new work that is damaged. Chipped, cracked or broken concrete or asphalt pavements will not be accepted. Demolition of concrete shall consist of breaking the materials into manageable sizes and loading directly onto trucks. Placing or stockpiling excavated materials onto existing pavements or gravel road that are to remain shall not be allowed. Gravel, asphalt surfaces and concrete pavements damaged by the contractor shall be repaired at the contractor’s expense as directed by the contracting officer.

***END OF SECTION***

STATEMENT OF WORK

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