Reconditioning_Services_of_Low_and_Medium_Voltage_Circuit_Breakers_(SMS)_-Tech_Specs.docx

TECHNICAL SPECIFICATIONS FOR

RECONDITIONING SERVICES OF LOW AND MEDIUM VOLTAGE CIRCUIT BREAKERS

(SHELTERED MARKET SOLICITATION)

The City of Tampa, Wastewater Department, Howard F. Curren Advanced Wastewater Treatment (HFC AWT) Plant requires the reconditioning of low and medium-voltage circuit breakers. Specifications are as follows:

8. GENERAL

This work includes the reconditioning of various medium and low voltage circuit breakers. Repair work shall be performed both as a result of problems identified during the initial inspections and on an as-needed basis. All labor, equipment, devices, expendable supplies, technical information and replacement parts shall be included, whether or not directly specified or detailed herein.

8.1 REFERENCES

The circuit breaker reconditioning shall be designed, manufactured, applied, installed, and certification tested in accordance with the latest applicable sections of:

9. BIDDER QUALIFICATIONS

9.1 The Bidder shall be a company actively involved in the maintenance and repair of industrial power systems. The Awardee shall be authorized by the original circuit breaker manufacturer to do the reconditioning work and shall have full access to any and all required replacement parts. Where existing parts are damaged beyond reasonable repair, new parts shall be used, as necessary, to restore the circuit breaker to a “like-new” condition. The Awardee shall have the personnel, equipment, expertise and supplies needed to perform the work detailed herein. The Awardee shall have the systems available to be able to respond to requests for service on an as-needed when-needed basis. The Awardee shall have the ability to schedule the services described herein.

9.2 Bidder shall utilize the original breaker manufacturing technical design and manufacturing staff for consultation and direction during the course of the reconditioning. Factory breaker drawings & data shall be available to assist in reconditioning.

9.3 Bidder shall be part of an engineering service organization with experienced, factory-trained field engineers and technicians familiar with the installation and startup of LV power circuit breakers.

9.4 The engineering service organization must have the capabilities of on-site cell alignment, breaker levering system repairs, and control system modifications. The engineering service organization shall have access to its original factory breaker drawings, specifications, and tolerances required to put the breaker into service satisfactorily.

9.5 All reconditioning shall be conducted under the direction of quality control and reconditioning standard, pursuant to ISO 9001 certification. A quality certificate shall document the progress of each breaker through the reconditioning process.

10. BIDDER SUBMITTALS

10.1 Bidder shall submit the following information with their bid response package:

10.1.1 A list of at least three references from present or former clients demonstrating the successful completion of similar agreements. The list shall be complete with the contact person(s), email addresses, and telephone numbers.

10.1.2 A list of personnel, assigned to this contract, qualified to perform this work and employed full time by the bidder including the length of time the employee has been with the firm.

10.1.3 Copies of all licenses and certifications of all employees and subcontractor employees pertinent to the work detailed herein.

10.1.4 A copy of the reporting form to be utilized for this work.

10.1.5 Proof of authorization by the original circuit breaker manufacturer to complete reconditioning work.

10.1.6 Documentation that details an established in-house safety training program or procedures for employees who will be involved in the performing of the work described herein.

Bidders that do not submit the complete information shall be considered “non-responsive”.

10.2 For each job, the following information shall be submitted for review/approval:

10.2.1 Equipment list

10.2.2 Project work schedule

10.2.3 Product Data Sheets

10.2.4 Major Component ratings including:

· Voltage

· Continuous current rating

· Interrupting ratings

11. SPECIFIC PROVISIONS

11.1 AWARDEE RESPONSIBILITY

The Awardee shall provide all technical services and equipment knowledge necessary to perform the work detailed herein. If the equipment information is not available from the Treatment Plant, the Awardee shall procure the needed information as an agent of the City. The Awardee shall ensure that the City is in compliance with the requirements of all applicable codes and manufacturing standards. The Awardee shall have the resources available to be capable of monitoring these organizations for any changes and/or new requirements that may become necessary for the City to remain in compliance. All devices, parts and materials that are supplied as a result of this specification shall meet or exceed the quality standards of the component being replaced. All defects that are discovered as a result of the initial inspections shall be reported to the appropriate City designee. A repair cost estimate for the identified defects shall be provided to the City. The appropriate City designee will provide written authorization for the repair when the estimate is submitted. When approval for repairs is granted, the Awardee shall schedule, and subsequently perform, the repairs. No payment will be made for repairs that do not receive prior written approval by the City.

11.2 WORK ORDERS

For services provided for the Wastewater Department, the Awardee shall respond to work orders that are generated by the City’s Computerized Maintenance Management System (CMMS). The appropriate City designee will provide instruction to the Awardee for the receiving and submitting of these work orders. The City will provide the Awardee with preventative and corrective work orders on an “as needed” basis. The Awardee shall enter on each work order any work performed, any defects found, any repairs needed, a specific parts list, make and model of equipment, and identification of technician(s) performing work.

In addition to the aforementioned information entered on work orders, if repairs are needed the Awardee shall include the estimated cost of repairs on the work order (see section 11.4 of the technical specifications).

11.3 REPAIR/REPLACEMENT PARTS

11.3.1 The Awardee shall be capable of providing all parts and materials required to complete each job. The COT shall not be charged for consumables. Consumables are defined as common materials required to complete a task that cost less than $100. Some examples of consumables are electrical tape, welding rods, miscellaneous hardware and lubricants.

11.3.2 The Awardee shall, with the City's written approval, provide the City with a free price quote for replacement equipment. The Awardee shall furnish invoices or receipts of replacement parts for price verification for each repair. The invoice shall include a detailed list of the Awardee’s cost and markup percentage for verification by the City. Only replacement parts of the highest quality and of domestic manufacture shall be accepted by the City.

11.3.3 The City reserves the right to supply any and all components necessary to complete any task and competitively bid any equipment that is needed. All replacement equipment shall be installed, tested and put in service by the Awardee. Should any defect in this equipment be detected by the Awardee, the appropriate City designee shall be notified. Any equipment that is provided from sources other than the Awardee shall not be repaired until such time that the manufacturer’s standard warranty, installer’s warranty or other such agreement has expired.

11.3.4 The Awardee shall warrant the breakers against defects in workmanship and material for a period of at least one year. This time period shall begin when the breaker is placed back in service. Should any defect become apparent during the warranty period, the Awardee shall repair/ replace the defective item(s) at no cost to the City.

11.4 BID RESPONSE

The Bid Response for this bid consist of the following:

· Bidders will submit a price to perform reconditioning services for breakers listed on the Line Item section of Getall. The bid amount will include a total for all breakers and a price per breaker cost.

· Bidders will submit a percentage mark-up for all parts (not to exceed 10%) that the bidder may need to provide for reconditioning the listed breakers. For bidding purposes, it is estimated that $5000 of parts will be needed, this number in actuality may vary; it is not a fixed number.

The bid amount will be calculated by:

Total dollar amount for reconditioning of the list of breakers on Bid Response Page + percentage of $5000 retail cost of parts = Total Bid Price.

Example: $8,000 (for Reconditioning) + $5,500 (10% of $5000 + $5000) = $13,500 (Total Bid Price)

12. TECHNICAL SPECIFICATIONS FOR RECONDITIONING SERVICES OF LOW VOLTAGE CIRCUIT BREAKERS

12.1 INITIAL INSPECTION

12.1.1 A maximum of two or three circuit breakers will be taken out of service at a time. The Awardee shall pick up the breaker(s) from the HFC AWT Plant. The Awardee shall provide shipping documents to the City when the breaker(s) are picked up. These documents shall include the date picked up, the City’s identification numbers and nomenclature, any defects that are noted by visual inspection, and the present settings of the solid-state trip unit.

12.1.2 Upon arrival at the Awardee’s shop, an initial report shall be compiled. This report shall include verification of mechanical and electrical operation, insulation and contact resistance. The incoming trip device settings and trip device force shall be recorded.

12.1.3 The breaker(s) shall be inspected for physical damage. Parts that are identified for replacement as a result of this inspection shall be recorded on the initial report. The Awardee shall provide a quote to the City designee for the replacement of such defective parts. The Awardee’s quote shall include its cost plus the % markup included on the Bid Response Page.

12.2 DISASSEMBLY

12.2.1 The breaker(s) shall be completely disassembled to their component parts. All such parts shall be inspected for wear and/or physical damage.

12.2.2 The operating mechanism shall be completely disassembled, thoroughly cleaned and inspected for wear and/or physical damage. The appropriate mechanism components shall be stripped and re-plated. The mechanism bearings shall be cleaned and inspected for wear and/or damage.

12.2.3 The primary finger clusters shall be completely disassembled, cleaned and polished by means of a vibrating device. These fingers shall be tin-plated as needed.

12.2.4 The main current-carrying assemblies shall be completely disassembled, thoroughly cleaned and polished by means of a vibrating device. These assemblies shall be tin-plated as needed.

12.2.5 The circuit breaker frame and other steel parts shall be stripped, thoroughly cleaned and polished by means of a vibrating device. Such parts shall be plated with a yellow zinc di-chromate compound.

12.2.6 The trip shaft bearings and bushings shall be removed, cleaned and inspected for wear and/or damage.

12.2.7 All electrical device coils shall be thoroughly cleaned.

12.2.8 The charging motor shall be disassembled, thoroughly cleaned, inspected for wear and/or damage and subsequently re-assembled. This motor shall be inspected for proper operation after the re-assembly.

12.2.9 When applicable, the gearboxes shall be reconditioned.

12.2.10All auxiliary contacts shall be cleaned and tested for proper operation.

12.2.11The arc chutes shall be removed, cleaned utilizing a Heppa vacuum and inspected for damage.

12.2.12The control wiring shall be removed and tested to determine its electrical condition. Should this testing ascertain that the wiring needs replacement, the material shall meet or exceed the original equipment manufacturer’s standards.

12.2.13All insulating components shall be cleaned, inspected for wear, damage and integrity. These components shall be sealed with an electrical grade clear coating.

12.3 REASSEMBLY

12.3.1 The Awardee shall utilize new hardware in the re-assembly of the breakers.

12.3.2 The circuit breaker frames shall be re-assembled.

12.3.3 The operating mechanism shall be re-assembled. New bearings shall be installed when it is deemed necessary by the disassembly process. This mechanism shall be lubricated. The lubricant that is used for this purpose shall meet or exceed the original equipment manufacturer’s standards.

12.3.4 The operating mechanism shall be installed in the frame. The mechanism shall be adjusted to the original equipment manufacturer’s specifications.

12.3.5 The contact assemblies/ pole pieces will be assembled, installed and adjusted to the original equipment manufacturer’s specifications.

12.3.6 The current-carrying components will be lubricated after they are re-assembled. The lubricant that is used for this purpose shall meet or exceed the original equipment manufacturer’s standards.

12.3.7 The racking mechanism shall be re-assembled and installed into the breaker frame.

12.3.8 Electrically operated breaker shall be re-wired with all electrical components installed. All electrical accessories shall be adjusted to the original equipment manufacturer’s standards.

12.3.9 The trip unit shall be set to the original settings and re-installed.

12.3.10A new nameplate shall be attached to the breaker. This nameplate shall include the Awardee’s company name and the date that the breaker was reconditioned.

12.4 FINAL INSPECTION AND TESTING: FACTORY / PRODUCTION TESTING

Each reconditioned circuit breaker shall be tested to the applicable sections of IEEE/ANSI C37.50 Section 6 and UL-1066 if the breaker was originally UL labeled. The testing shall include but not be limited to:

12.4.1 Measure and record the circuit breaker’s trip bar force.

12.4.2 Setting of the solid-state trip

Direct-acting trip devices shall be tested/calibrated to determine their conformance to published trip characteristic curves. Each breaker shall be primary injection tested using a sinusoidal-wave-shape, single-phase 60 Hz current at a convenient voltage. The primary injection test device shall be computer controlled to assure accuracy in the applied currents. The primary injection test device shall be capable of direct output of the test results to a printer or storage device. The following applicable tests shall be performed:

12.4.2.1 Long-time-delay-element pickup

12.4.2.2 Short-time-delay-element pickup

12.4.2.3 Instantaneous-element pickup

12.4.2.4 Time delay of long-time-delay-element

12.4.2.5 Time delay of short-time-delay-element

12.4.2.6 Ground-element pickup

12.4.2.7 Time delay of the ground element

12.4.3 Perform control, secondary wiring, and devices checks per IEEE/ANSI C37.50.6.3 to verify that all connections are correct per the wiring diagram. Those circuits for which operation or testing is not feasible shall be checked for continuity.

12.4.4 Perform dielectric withstand tests per IEEE/ANSI C37.50.6.4. The applied test voltages shall be essentially sinusoidal (within 20% of the rated frequency of the circuit breaker being tested) and shall have a minimum crest value equal to 1.414 times the specified test voltage potentials. The potential shall be increased gradually from zero so as to reach the required test value in 5 to 10 seconds and shall be held at that value for one minute, except for the momentary control voltages (listed in 4 below). The following test values are applied to Class 1 reconditioned LV power circuit breakers:

12.4.4.1 2200 Vac for the primary circuit of a completely assembled circuit breaker

12.4.4.2 1500 Vac for secondary control wiring and control devices, including current sensors and magnetic latch, except (3), (4) and (5)

12.4.4.3 1000 Vac for new or reconditioned motors

12.4.4.4 500 Vac momentary for control devices and circuitry operating at 80 Vac RMS (110 Vdc) or less that are not connected directly to the primary circuit or external, secondary control circuits

12.4.4.5 Twice rated voltage plus 1000 Vac for Undervoltage trip devices operating at a voltage above 250 Vac

12.4. 5 Perform a no-load operation test per IEEE/ANSI C37.50.6.5.1 (for electrically operated breakers).

12.4.5.1 Five closing and five opening operations at minimum control voltage.

12.4.5.2 Five closing, five opening, and five trip-free operations at maximum control voltage.

12.4.5.3 Two operations to check anti-pumping which shall be performed in the following manner:

12.4.5.3.1 Apply uninterrupted control power to the closing circuit of the open circuit breaker as the closing signal.

12.4.5.3.2 Trip the circuit breaker. The circuit shall remain open until closing circuit power has been interrupted and then restored.

12.4.5.4 Check all other devices, both electrical and mechanical, for proper operation.

12.4.6 Perform no-load operation tests per IEEE/ANSI C37.50.6.5.2 (For manually operated breakers):

12.4.6.1 Five closing and five opening operations.

12.4.6.2 When shunt trip is used, a minimum of five openings using the shunt trip at the minimum control voltage specified for the coil.

12.4.6.3 Five trip-free operations.

12.4.6.4 Check all other devices for proper mechanical operation.

12.4.7 Verify the functional operation of all circuit breaker interlocks and cell interfaces in a cell structure, preferably a cell in the reconditioner’s facility.

12.4.8 Original UL listed breakers shall have their dielectric withstand verified by placing the breaker in the test position, closing the breaker, and applying 2200 Vac across the cell’s primary conductors for one minute. No dielectric breakdown shall occur.

12.4.9 Test the trip device mechanically or by application of proper voltage to the device to establish positive tripping of the fused circuit breaker.

12.4.10 The Undervoltage device will be tested for pickup and dropout voltages.

12.5 INSTALLATION AND FIELD TESTING

12.5.1 The breaker shall be inserted into an original equipment cell and checked for proper alignment and operation. The racking mechanism, interlock, and visual indicators shall be checked in conjunction with this procedure.

12.5.2 Restore settings of solid-state trip unit to proper values.

13. TECHNICAL SPECIFICATIONS FOR RECONDITIONING SERVICES OF MEDIUM VOLTAGE CIRCUIT BREAKERS

13.1 TABLE REFERENCES

The following Table References are used in this specification. Each of these references can be found in the attached appendix.

13.1.1 Table 1: US Standard bus connection bolt torque values.

13.1.2 Table 2: Insulation resistance and test values for electrical apparatus.

13.1.3 Table 5: Over potential Test Voltages for Non-Inductive Electrical Apparatus.

13.1.4 Table 7: Power Factor/Dissipation Factor Recommended Test Voltage Values.

13.1.5 Table 11: Insulation resistance and test temperature conversion to 20°C values.

13.2 RECONDITION EVALUATION

These steps shall be used to determine what will be required to recondition this product under this specification.

13.2.1 INSPECTION

13.2.1.1 Frame

· Ensure that the nameplate data is legible.

· Ensure that the third-party listing service label is legible.

· Inspect for missing screws, bolts, nuts, fasteners, retainers and keepers.

· Inspect for rust and corrosion.

· Inspect ground connection for excessive and inappropriate lubrication.

· Inspect primary disconnects/stabs for excessive and inappropriate lubrication, signs of overheating and missing and defective parts.

· Inspect secondary disconnects/stabs for excessive and inappropriate lubrication, signs of overheating and missing and defective parts.

· Inspect interference interface for correct position based on frame rating.

· Inspect insulation structure for signs of overheating, deterioration and tracking.

· Record results on Recondition Evaluation Form.

13.2.1.2 Operating Mechanism

· Inspect for signs of rust and corrosion.

· Inspect for excessive and inappropriate lubrication.

· Inspect charging motor, when applicable.

· Inspect control relays.

· Inspect spring release relay when applicable.

· Inspect closing springs when applicable.

· Inspect opening springs when applicable.

· Inspect closing coil when applicable.

· Inspect insulating links (push rods).

· Inspect for missing screws, bolts, nuts, fasteners, retainers and keepers.

· Record results on Recondition Evaluation Form.

13.2.1.3 Interphase Barriers

· Inspect for dust, dirt, and foreign materials.

· Inspect for chips, cracks, and deterioration.

· Inspect for tracking.

· Inspect for overheating.

· Record results on Recondition Evaluation Form.

13.2.1.4 Arc Extinguishers

· Inspect for loose and missing parts.

· Inspect for dust, dirt, foreign material, cracks, chips and signs of overheating.

· Inspect for excessive deterioration and carbon buildup on the ceramic and metal separator.

· Inspect arc runners for excessive deterioration.

· Inspect blowout coils.

· Record results on Recondition Evaluation Form.

13.2.1.5 Puffer Assembly

· Inspect for signs of rust and corrosion.

· Inspect for inappropriate lubrication.

· Inspect for defective tubing.

· Inspect for missing screws, bolts, nuts, fasteners, retainers and keepers.

· Record results on Recondition Evaluation Form.

13.2.1.6 Racking/Draw-out Mechanism

· Inspect for signs of rust and corrosion.

· Inspect for excessive and inappropriate lubrication.

· Inspect for missing screws, bolts, nuts, fasteners, retainers and keepers.

· Record results on Recondition Evaluation Form.

13.2.1.7 Arcing Contacts

· Inspect for excessive deterioration.

· Inspect for cracks, chips, and pitting.

· Measure the gap of arcing contacts.

· Check for proper sequence if able to slow/maintenance close breaker.

· Check for proper alignment/seating in the closed position.

· Record results on Recondition Evaluation Form.

13.2.1.8 Main Contacts

· Inspect for excessive deterioration.

· Inspect for cracks, chips, and pitting.

· Measure gap of main contacts.

· Check for proper sequence if able to slow/maintenance close breaker.

· Check for proper alignment/seating in the closed position.

· Record results on Recondition Evaluation Form.

13.2.1.9 Intermediate Contact

· Inspect for excessive deterioration.

· Inspect for cracks, chips, and pitting.

· Check for proper alignment/seating in the closed position.

· Inspect separators for defects.

· Record results on Recondition Evaluation Form.

13.2.1.10 Current Carrying Components

· Inspect hinge/pivot joints for signs of overheating.

· Inspect hinge/pivot joints for missing and defective parts.

· Inspect any other current-carrying component for signs of overheating.

· Inspect any other current-carrying component for missing and defective parts.

· Record results on Recondition Evaluation Form.

13.2.1.11 Interlocks

· Ensure all circuit breaker interlocks (all present).

· Record results on Recondition Evaluation Form.

13.2.1.12 Limit Switches

· Inspect all circuit breaker limit switches for proper operation.

· Check all terminal connections.

· Inspect for chips, cracks and defective limit switch cases.

· Record results on Recondition Evaluation Form.

13.2.1.13 Auxiliary/Secondary Contact Block

· Inspect circuit breaker auxiliary contact block for proper operation.

· Check all terminal connections.

· Inspect for chips, cracks and defective auxiliary contact block assembly.

· Record results on Recondition Evaluation Form.

13.2.1.14 Devices

· Inspect shunt trip unit for signs of overheating and deteriorated insulation.

· Check shunt trip unit for loose and defective terminal connectors.

· Inspect anti-pump unit for signs of overheating and deteriorated insulation.

· Check anti-pump unit for loose and defective terminal connectors.

· Inspect other control devices for signs of overheating and deteriorated insulation.

· Record results on Recondition Evaluation Form.

13.2.1.15 Control Wiring

· Inspect for overheating.

· Inspect for damage and deteriorated insulation.

· Check for loose and defective terminal connectors.

· Record results on Recondition Evaluation Form.

13.2.1.16 Operation

· Operate racking/draw-out mechanism three (3) times while checking for smooth operation.

· Manually operate circuit breaker a minimum of five (5) times while checking for proper operation of the:

· Quick-make and quick-break feature.

· Counter operation.

· Close/Open indicator Flag.

· Electrically operate (close and open) circuit breaker a minimum of five (5) times while checking for proper operation.

· Record results on Recondition Evaluation Form.

13.2.2 TESTING

13.2.2.1 Insulation Resistance Test

13.2.2.1.1 Perform an insulation resistance at test values specified in Table 2 of the attached appendix as follows:

· Circuit breaker in the open position

· Line to load

· Circuit breaker in the closed position

· Phase to phase

· Phase to ground

· Correct for temperature, if necessary (Table 11).

· Record results on Recondition Evaluation Form.

· Compare results to manufacturer’s recommendations or industrial standards (Table 2).

13.2.2.2 Power Factor/Dissipation Factor Test

13.2.2.2.1 Perform the following Test on all three phases (phase “A” is described— same procedure applies for phases “B” & “C”)

· Perform a power factor test at a rated voltage or below— see Table 7 of the attached appendix.

· Breaker is in the “OPEN” position with arc extinguishers installed.

· Connect the HIGH voltage test lead to the line side of “A” phase.

· Connect the LOW voltage test lead to the load side of “A” phase.

· Connect the GROUND test lead to the frame of the breaker.

· Run a power/dissipation factor test in the “GUARD” mode.

· This is the “A-phase line to ground”.

· Correct for temperature, if necessary. Refer to test equipment manufacturer’s guidelines.

· Record results on Recondition Evaluation Form.

· Run a power/dissipation factor test in the “UST” mode.

· This is the “A-phase line to load”.

· Correct for temperature, if necessary. Refer to test equipment manufacturer’s guidelines.

· Record results on Recondition Evaluation Form.

· Move the HIGH voltage test lead to the load side of “A” phase and the LOW voltage test lead to the line side of “A” phase.

· Run a power/dissipation factor test in the “GUARD” mode.

· This is the “A-phase load to ground”.

· Correct for temperature, if necessary. Refer to test equipment manufacturer’s guidelines.

· Record results on Recondition Evaluation Form.

· Repeat Test for phase “B” and “C”.

· Compare results to manufacturer's guidelines or industrial standards.

13.2.2.3 Contact Resistance Test

· Perform a contact resistance, millivolt drop test, or watt-loss test from line to load on each phase of a closed-circuit breaker with the test points at the line and load primary stabs/disconnects.

· Record results on Recondition Evaluation Form.

· Compare test results to manufacturer's recommendations.

· Compare the test results of each pole-- ensure that they are within 50% of each other.

13.2.2.4 Timing Test

· Perform a timing test on the close operation using the 52a contacts.

· Perform a timing test on the open operation using the 52b contacts.

· Compare with the manufacturer’s recommendations.

13.2.2.5 Control Wiring Test

· Perform an insulation resistance at test values specified in Table 2 of the attached appendix.

· Record results on Recondition Evaluation Form.

13.3 RECONDITIONING PROCEDURES

The following procedures are in a recommended order and are required to recondition this product. Based on actual product design, and as found condition, some of these procedures may not be applicable. The Testing requirement must be completed before the product can be returned to the city.

13.3.1 RECONDITIONING

13.3.1.1 Frame

· Disassemble to clean.

· Clean all parts of contamination and corrosion.

· Clean interphase barriers.

· Clean primary stabs/disconnects.

· Clean secondary stabs/disconnects.

· The circuit breaker frame and other steel parts shall be stripped, thoroughly cleaned, and polished by means of a vibrating device.

· The steel parts shall be plated with a yellow zinc dichromate compound or painted as per the manufacturer’s specifications.

13.3.1.2 Missing or Defective Components, Parts, and Hardware

· Replace or repair any missing or defective components, parts, and hardware found during the inspection phase of this standard.

13.3.1.3 Operating Mechanism

· Disassemble operating mechanism, as necessary.

· Clean operating mechanism.

· Replace any defective parts.

· Replate operating mechanism parts, as necessary.

· Assemble operating mechanism.

· Apply proper lubrication.

· Adjust for proper operation.

· Use slow/maintenance close procedure to check operation.

· Manually operate circuit breaker a minimum of ten (10) times while checking for proper operation of the:

· Quick-make and quick-break feature

· Counter operation

· Close/Open indicator flag

· Electrically operate circuit breaker a minimum of ten (10) times while checking for proper operation.

13.3.1.4 Racking/Draw out Mechanisms

· Replace any missing screws, bolts, nuts, fasteners, retainers or keepers.

· Apply proper lubrication.

· Make any required adjustments.

· Operate racking/drawout mechanism three (3) times while checking for smooth operation.

13.3.1.5 Puffer Assembly

· Disassemble puffer assembly.

· Clean.

· Replace any defective parts or tubing.

· Ensure rings and pads are properly seated.

· Assemble puffer assembly.

· Check operation.

13.3.1.6 Arc Extinguishers

· Disassemble arc extinguishers.

· Clean arc extinguishers.

· Replace any defective parts.

· Assemble arc extinguishers.

· Check for proper torque on connections.

13.3.1.7 Arcing Contacts

· Remove and replace any defective arcing contacts.

· Stationary arcing contacts.

· Clean and dress.

· Remove and replate, as necessary.

· Replace contacts.

· Movable arcing contacts.

· Clean and dress.

· Remove and replate, as necessary.

· Replace contacts.

· Check for proper wipe and alignment.

· Check for proper torque on connections.

13.3.1.8 Main Contacts

· Remove and replace any defective main contacts.

· Stationary main contacts.

· Clean and dress.

· Remove and replate, as necessary.

· Replace contacts.

· Movable main contacts.

· Clean and dress.

· Remove and replate, as necessary.

· Replace contacts.

· Check for proper wipe and alignment.

· Check for proper torque on connections.

13.3.1.9 Current-Carrying Components

· Line and load connections.

· Completely disassemble, thoroughly clean, and polish by means of a vibrating device.

· Tin plate, as necessary.

· Hinge/pivot joints.

· Completely disassemble, thoroughly clean, and polish by means of a vibrating device.

· Tin plate, as necessary.

· Other current-carrying components.

· Completely disassemble, thoroughly clean, and polish by means of a vibrating device.

· Tin plate, as necessary.

13.3.1.10 Primary Stabs/Disconnects

· The primary finger clusters shall be completely disassembled, cleaned and polished by means of a vibrating device.

· Tin plate primary fingers as needed.

· Replace primary stabs/disconnects.

· Check for proper torque on connections.

13.3.1.11 Secondary Stabs/Disconnects

· The secondary finger clusters shall be completely disassembled, cleaned and polished by means of a vibrating device.

· Tin plate secondary fingers as needed.

· Replace secondary stabs/disconnects.

· Check for proper torque on connections.

13.3.1.12 Control Wiring

· Replace any control wire that is damaged or shows signs of overheating.

· Replace any loose or defective terminal connectors.

13.3.1.13 Checks and adjustments

· General

· Adjust all mechanical settings per manufacturer's instructions.

· Check all adjustments for proper tolerance per manufacturer's recommendations.

· Record results on Reconditioning Test Form.

· Main contacts

· Check for proper wipe, pressure, gap and other manufacturer's recommendations.

· Check for proper alignment/seating in the closed position.

· Check for proper sequence.

· Record results on Reconditioning Test Form.

· Arcing contacts

· Check for proper wipe, pressure, gap and other manufacturer's recommendations.

· Check for proper alignment/seating in the closed position.

· Check for proper sequence.

· Record results on Reconditioning Test Form.

· Hinge/Pivot

· Check for proper adjustment based on the manufacturer's recommendations.

· Record results on Reconditioning Test Form.

· Limit switches

· Check for proper adjustment and operation based on the manufacturer's recommendations.

· Record results on Reconditioning Test Form.

· Safety interlocks

· Check for proper adjustment and operation based on the manufacturer's recommendations.

· Record results on Reconditioning Test Form.

13.3.1.14 Torque

· Check all screw and bolt connections for the proper torque per manufacturer's recommendations or industrial standards (Table 1 of the attached appendix).

· Record results on Reconditioning Test Form.

13.3.1.15 Operation

· Manually operate (close/open) circuit breaker ten (10) times while checking for proper operation of the operating mechanism.

· Electrically operate (close/open) circuit breaker ten (10) times while checking for proper operation.

· Verify shunt trip operation.

· Verify anti-pump operation.

· Verify operation of counter.

· Verify operation of any limit switches.

· Record results on Reconditioning Test Form.

13.3.1.16 Final Assembly

· Ensure that the nameplate/label data is complete, correct and legible.

13.3.2 TESTING

13.3.2.1 Insulation Resistance

· Perform an insulation resistance test as outlined in Section 8.21 of this Specification.

· Record results on Reconditioning Test Form.

· Compare results to manufacturer's recommendations or industrial standards (Table 2 of the attached appendix).

· The test results must be within the guidelines recommended— if necessary, take additional corrective actions.

13.3.2.2 Power Factor/Dissipation Factor Test

· Perform a power factor/dissipation factor test as outlined in Section 8.22 of this Specification.

· Record results on Reconditioning Test Form.

· Compare results to manufacturer's guidelines or industrial standards.

· The test results must be within the guidelines recommended— if necessary, take additional corrective actions.

13.3.2.3 Contact Resistance Test

· Perform a contact resistance, millivolt drop test, or watt-loss test from line to load on each phase of a closed-circuit breaker with the test points at the line and load primary stabs/disconnects.

· Record results on Reconditioning Test Form.

· Compare test results to manufacturer's recommendations.

· Compare the test results of each pole--ensure that they are within 50% of each other— if necessary, take additional corrective actions.

13.3.2.4 Timing Test

· Perform a timing test on the close operation using the 52a contacts.

· Perform a timing test on the open operation using the 52b contacts.

· Compare with manufacturer’s recommendations— if necessary, take additional corrective actions.

13.3.2.5 Control Wiring Test

· Perform an insulation resistance at test values specified in Table 2 of the attached appendix.

· Record results on Reconditioning Test Form.

· If necessary, take additional corrective actions.

13.4 INSTALLATION AND FIELD TESTING

The breaker shall be inserted into an original equipment cell and checked for proper alignment and operation. The racking mechanism, interlock, and visual indicators shall be checked in conjunction with this procedure.

14. RECORDS AND REPORTS

The Awardee shall provide a complete report of services rendered for each breaker that is reconditioned as a result of this specification. This report shall include the results of all tests that were performed during this work. The report shall include the results of initial testing, testing performed during disassembly and final certified test results of the reconditioned unit. The report shall be titled with the City’s identification numbers and nomenclature. The report shall identify all parts and/or components that were replaced.

14.1 The following information shall be submitted for record purposes:

14.1.1 Final as-built drawings and information for items listed in Paragraph 9.2, and shall incorporate all changes made during the manufacturing process.

14.1.2 Wiring diagrams

14.1.3 Installation information

Drawings, manuals, and reports shall be supplied on CD in PDF format. Two (2) copies of the CD, with contents durably marked on each, shall be delivered to the owner prior to the request for final payment.

15. MANUFACTURER’S CERTIFICATION

A qualified factory-trained manufacturer’s representative shall certify in writing that the equipment has been installed, adjusted, and tested in accordance with the manufacturer’s recommendations.

16. SITE ACCESS REQUIREMENTS

16.1 TAMPA PORT ACCESS. All personnel assigned to provide this service or required to deliver goods to the Port of Tampa, if applicable in this award, shall obtain a Port Pass. To obtain this port pass will require each employee to have a valid photo ID. It is the responsibility of the Awardee to obtain Port Passes before work begins or prior to delivery. Each employee shall display the identification card on outer apparel at all times when on the AWT Plant site. Any person found on the site without the required identification card will be directed to leave the site immediately. The time and cost associated with acquiring this ID shall be the Awardee’s responsibility.

Documentation, pricing and other information related to the access requirements for the Port of Tampa can be found at: https://www.porttb.com/security.

16.2 AWT PLANT ACCESS. Upon entering and departing the AWT Plant, all Awardee employees shall physically check in with the AWTP main dispatch area. Employees must inform AWT Plant representatives of the site facility, including start and stop times. These hours must match the hours reflected on the invoices submitted by the Awardee for acceptance.

APPENDIX

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