Newport Biosolids Conveyor Addendum 1.pdf

Newport Biosolids Conveyor Replacement Addendum No. 1 19-2673.01 Page 1 of 5

ADDENDUM NO. 1

TO THE

CONTRACT DOCUMENTS

FOR

BIOSOLIDS CONVEYOR REPLACEMENT

FOR

CITY OF NEWPORT

THIS ADDENDUM IS HEREBY MADE A PART OF THE CONTRACT DOCUMENTS TO THE SAME

EXTENT AS THOUGH IT WERE ORIGINALLY INCLUDED THEREIN.

BIDDERS MUST ACKNOWLEDGE RECEIPT OF ALL ADDENDA ON THE BID FORM. BID PROPOSALS

THAT FAIL TO ACKNOWLEDGE ALL ADDENDA MAY BE CONSIDERED IRREGULAR AND MAY BE

REJECTED.

ISSUED THIS 1ST DAY OF SEPTEMBER 2021.

MURRAYSMITH

888 SW 5th, Suite 1170

Portland, OR 97204

(503) 225-9010

Justin S. Moman

12/31/2022RENEWS

19-2673.01 Page 2 of 5

ITEM NO. 1 – SPECIFICATION SECTION 00 11 13 ADVERTISEMENT FOR BIDS

On page 00 11 13-1, add the following after the end of the paragraph that begins with “Required subcontractors”:

“Owner as “Buyer” has executed a purchase order with Austin-Mac, Inc. as “Seller” for the procurement of goods and special services for the conveyor equipment. The materials and equipment to be provided through the purchase order are to be furnished and delivered to the Site for installation by Contractor. Owner will assign said purchase order to Contractor as set forth in the Agreement. Contractor will accept the assignment, as Buyer (Contractor/Assignee), and will be responsible to Owner for the performance of obligations by Seller, which will become a Subcontractor or Supplier to Contractor.

Bidders may examine the contract documents for the procurement of goods and special services for the conveyor equipment in the Supplementary Information section of these Contract Documents.”

CLARIFICATION: Owner is assigning the conveyor equipment purchase order to the Contractor.

ITEM NO. 2 – SPECIFICATION SECTION 00 21 13 INSTRUCTIONS TO BIDDERS

On page 00 21 13-10, add the following after Article 20:

“ARTICLE 21 – PROCUREMENT CONTRACT TO BE ASSIGNED

Bidder’s attention is directed to the provisions of Article AA of the Agreement Between Owner and Contractor for Construction Contract which provide for the assignment of the Purchase Order to a construction contractor designated by the Buyer to construct the Biosolids Replacement project. Successful Bidder (Seller) will be required to perform the Purchase Order after it has been assigned to the construction contractor (Contractor Assignee). Timing of the assignment is addressed in the Agreement.”

CLARIFICATION: Owner is assigning the conveyor equipment purchase order to the Contractor.

ITEM NO. 3 – SPECIFICATION SECTION 00 41 13 BID FORM

On page 00 41 13-4, add the following after section 6.02:

“ARTICLE AA—BIDDER’S ACKNOWLEDGEMENTS

AA.01 Bidder acknowledges the provisions of the Agreement as to the assignment of the specified purchase order for procurement of goods and special services for the conveyor equipment.”

CLARIFICATION: Owner is assigning the conveyor equipment purchase order to the Contractor.

ITEM NO. 4 – SPECIFICATION SECTION 00 52 13 AGREEMENT BETWEEN OWNER AND

CONTRACTOR FOR CONSTRUCTION CONTRACT

On page 00 52 13-6, add the following after section 8.03:

19-2673.01 Page 3 of 5

“ARTICLE AA—MISCELLANEOUS

AA.01 The contract between Owner as “Buyer” and Austin-Mac, Inc. as “Seller” for procurement of goods and special services (“Purchase Order”) for the conveyor equipment is hereby assigned to Contractor by Owner, and Contractor accepts such assignment.

AA.02 This assignment will occur on the Effective Date of the Agreement and will relieve the Owner as Buyer from all further obligations and liabilities under the Purchase Order. Contractor, as Buyer (Contractor/Assignee) following assignment, will assume full responsibility to Owner for the performance of obligations by Seller, which will be Contractor’s Subcontractor or Supplier. Notwithstanding this assignment, all performance guarantees and warranties required by the Purchase Order will continue to run for the benefit of the Owner and, in addition, for the benefit of the Contractor. Except as noted in the Purchase Order, all rights, duties, and obligations of Engineer to Buyer and Seller under the Purchase Order will cease upon assignment.

AA.03 A copy of the assigned Purchase Order is included in the Supplementary Information.”

CLARIFICATION: Owner is assigning the conveyor equipment purchase order to the Contractor.

ITEM NO. 5 – SUPPLEMENTARY INFORMATION

Add the attached Purchase Order (six pages) to the beginning of the Supplementary Information section.

ITEM NO. 6 – SPECIFICATION SECTION 00 73 01 C-800 SUPPLEMENTARY CONDITIONS

On page 00 73 01-2, add the following at the end of Article 2:

“SC 1.01.A.52 Add the following new Paragraph after Paragraph 1.01.A.51:

52. System Programmer – Equivalent to System Integrator”

CLARIFICATION: Specified roles of System Programmer and System Integrator are equivalent.

ITEM NO. 7 – SPECIFICATION SECTION 01 75 16 TESTING, TRAINING, AND SYSTEM START-UP Replace section 1.9.B with the following:

“A. Conduct operational test for continuous 24-hour period; all construction trades must be locally available during entire test period.”

CLARIFICATION: Operational test reduced to 24 hours; all construction trades must be locally available during entire test period.

ITEM NO. 8 – SPECIFICATION SECTION 26 29 23 LOW VOLTAGE ADJUSTABLE FREQUENCY DRIVES Replace entire section with attached section (nine pages).

19-2673.01 Page 4 of 5

CLARIFICATION: Additional VFD manufacturers added.

ITEM NO. 9 – SPECIFICATION SECTION 40 61 13 PROCESS CONTROL SYSTEM GENERAL

PROVISIONS

On page 40 61 13-9, replace section 3.3 with the following:

“3.3 MANUFACTURER’S SERVICES

A. TRAINING: Provide a factory-trained manufacturer’s representative or System Integrator Subcontractor skilled in equipment use at the Site for the following activities. Specified durations do not include travel time to or from the Site.

1. Prior to startup of the control system changes provide training to demonstrate the use of the SCADA system to operate the equipment as modified by this contract.

2. During start up and commissioning of the instrumentation provide training to demonstrate the use, calibration, and maintenance of all supplied instrumentation.

3. Prior to startup of the control system provide training to demonstrate the use of the SCADA system to operate the facility as modified by this contract.

B. Coordinate training with operations and maintenance staff schedules to ensure all required staff can attend.

C. Training to include configuration, operation, trouble shooting, wiring, calibration, testing, installation, safety, and warranty coverage for each process control hardware type.

D. Certify completion of training.

E. Owner reserves the right to reuse recordings of training sessions.

F. Provide for a 4-hour follow-up training session, if requested by the Owner, 6 months after completed start-up.

G. The above training services can be modified if coordinated with the Owner, but the Systems Integrator shall provide a minimum of 12 hours for training.”

CLARIFICATION: Required training durations removed.

ITEM NO. 10 – SPECIFICATION SECTION 40 61 26 PROCESS CONTROL SYSTEM TRAINING

19-2673.01 Page 5 of 5

Delete entire section.

CLARIFICATION: Section is not required.

Newport Biosolids Conveyor Replacement Low Voltage Adjustable Frequency Drives

19-2673 Addendum No. 1 26 29 23- 1

SECTION 26 29 23

LOW VOLTAGE ADJUSTABLE FREQUENCY DRIVES

PART 1 GENERAL

1.1 SUMMARY

A. Section includes:

1. Scope.

2. Reference Standards.

3. Quality Assurance.

4. Submittals.

5. Products Requirements.

6. VFD Schedule.

7. Coordination.

8. Products.

9. Execution.

1.2 SCOPE

A. This specification specifies low voltage, adjustable frequency drives (AFDs), and variable frequency drives (VFDs). For the purpose of this specification the terms AFD and VFD are interchangeable and equivalent.

B. Refer to the drawings for control and monitoring requirements including special interlocking requirements.

1.3 REFERENCE STANDARDS

A. This Section incorporates by reference the latest revisions of the following documents.

They are part of this Section insofar as specified and modified herein. In the event of conflict between the requirements of this Section and those of the listed documents, the requirements of this Section shall prevail.

B. Unless otherwise specified, references to documents shall mean the documents in effect on the effective date of the Agreement. If referenced documents have been discontinued by the issuing organization, references to those documents shall mean the replacement documents issued or otherwise identified by that organization or, if there are no replacement documents, the last version of the document before it was discontinued.

19-2673 Addendum No. 1 26 29 23- 2

Reference Title

ANSI/IEEE

C37.30A(1984)

Definitions and Requirements for High- Voltage Air Switches, Insulators, and Bus Supports, Supplement to C37.30-1971

ANSI C37.32 Schedules of Preferred Ratings, Manufacturing Specifications and

Application Guide for High-Voltage Air Switches, Bus Supports, and

Switch Accessories

NEMA ICS 1 General Standards for Industrial Controls and Systems

NEMA ICS 2 Standards for Industrial Control Devices, Controllers and Assemblies

NEMA ICS 3 Industrial Systems

NEMA ICS 3.1 Safety Standards for Construction and Guide for Selection, Installation and Operation of Variable-speed Drive Systems

NEMA ICS 4 Terminal Blocks for Industrial Control Equipment and Systems

NEMA ICS 6 Enclosures for Industrial Controls and Systems

ANSI C37.90 Relays and Relay Systems Associated with Electric Power Apparatus

IEEE 519 Recommended Practices and Requirements for Harmonic Control in

Electrical Power Systems

1.4 QUALITY ASSURANCE

A. REQUIREMENTS: Section 26 05 00 General Requirements for Electrical Work

B. The manufacturer shall warranty the above specified equipment for a period of twelve months from equipment start-up or eighteen months from date of shipment, whichever occurs first, to be free from defects in design, workmanship or materials.

1.5 SUBMITTALS

A. Submittals requirements specified in: Section 01 33 00.

B. Product Data: For each type of device and system:

1. A copy of this specification Section with addenda updates, and all referenced

Sections, with addenda updates, with each paragraph check-marked to show specification compliance or marked to show deviations.

2. Catalog and technical data indicating the equipment complies with the

Construction Document.

3. Provide Seismic calculations for anchoring and support of equipment as required in Section 01 41 20.

19-2673 Addendum No. 1 26 29 23- 3

4. Installation instructions, outline dimensions and weights including filters and/or phase shifting autotransformers, front view drawing identifying control and monitoring devices, nameplate engravings, shipping section dimensions, weight, and foundation requirements or wall mounting requirements for all assemblies.

5. External connection diagram showing function and identification of all terminals requiring field connections.

6. O&M manuals per Section 01 33 00 and Section 26 05 00.

7. Schematics and wiring diagrams.

8. Plan drawings showing conduit entry locations.

9. Current and voltage distortion calculations.

a. Point of Common Coupling (PCC)

b. Include first 36 odd current and voltage harmonics. Voltage shall be calculated on line-to-line basis.

c. Provide distortion figures for each harmonic and the total demand distortion.

10. Efficiency and power factor calculations:

a. Calculate efficiencies of the VFD controller including the auto-transformer

(where applicable), ventilation fans, control power and all VFD losses.

b. Calculate displacement and total power factor including filter.

c. Perform calculations at 100, 75, and 50 percent speed.

d. Include first 36 harmonics.

11. Calculations of cooling and ventilation requirements.

12. Certified final factory test procedure and results for each drive.

13. Location and description of service center and spare parts stock.

14. Recommended spare parts list.

15. Factory and field test documentation.

16. Training schedule and materials.

19-2673 Addendum No. 1 26 29 23- 4

17. Written descriptions explaining ladder diagram operation, system operation, and analog signal processing.

18. Comprehensive interconnection diagrams for VFD and motor.

19. In accordance with seismic anchoring requirements:

a. Certification of compliance with local code and seismic designation.

b. A sketch or description of the anchorage and restraint system.

20. Certification that VFD, motor, and driven load are compatible throughout the specified speed range.

21. Certified statement from the manufacturer accepting responsibility for providing a fully functioning installation as specified herein.

1.6 PRODUCT REQUIREMENTS

A. The VFD system shall convert 460 volt, 60-Hertz nominal input to a suitable voltage and frequency to cause a premium efficient, inverter duty, squirrel- cage induction motor to run at a speed proportional to an external input analog 4 to 20 ma dc or digital input command as specified for the required VFD speed range.

B. The VFD system shall include rectifier units, inverter units, control circuitry, protective equipment, phase shifting autotransformers, input line reactors and output load reactors and other filters and accessories as necessary to provide the specified functions to meet voltage and current harmonics at the specified point of common connection and to mitigate the motor reflected voltage wave. Unless otherwise specified, the point of common connection for VFDs shall be the 480-distribution bus

(motor control center, distribution panel, etc.) immediately upstream of the VFD.

C. VFD’s shall be 6-Pulse units for small motors.

1. Listed and labeled by Underwriter’s Laboratories, Inc. (UL), ETL, or Factory Mutual

(FM).

a. All upgrades to specified requirements per UL or ETL.

2. QUALITY ASSURANCE: The Owner reserves the right to observe factory tests on the

VFD controller at the Owner’s option and expense.

3. COMPATIBILITY: VFD controller’s performance shall be compatible and tolerant of disturbances produced by other VFD controllers and not interfere with each other.

4. PROGRAMMING: Provide VFD controller configuration and MACRO or sub-routine programming to meet specified driven equipment requirements.

19-2673 Addendum No. 1 26 29 23- 5

5. MAINTAINABILITY: VFD controller’s parts shall be interchangeable and modular for all controllers.

D. FACTORY TEST: Subject complete VFD system to a complete simulated operational test. Drive a calibrated load at various speeds over the specified speed range to determine VFD efficiency.

1.7 VFD SCHEDULE

Equipment Name

Tag Number

Drive

Number

Drive

HP

Drive

Speed

Range

Driven

Equipment

Specification

VFD

Type

VFD Enclosure

Mounting

Distance (ft) from

VFD to Driven

Equipment Motor

CON-351-01 VFD-1 3 1800-3600 33 14 00 CT, 6P

MOUNTED

IN MCC

1.8 COORDINATION

A. Obtain and review the appropriate data for the driven motor and load over the required speed range, for a complete system analysis. Verify that equipment is mutually compatible and free of resonance over the complete operating range.

Coordinate the assignment of any critical frequencies with the equipment suppliers.

PART 2 PRODUCTS

2.1 MANUFACTURERS

A. Variable frequency drives shall be as manufactured by the vendors listed below and are based on the Owners existing VFD’s installed at the plant. To conform with specified requirements, a manufacturer’s standard product may require modification.

1. AB

2. ABB

3. Danfoss

2.2 SYSTEM

A. General: Provide integrated, all solid-state variable frequency drives (VFD) complete with incoming line reactors. Provide all components, with terminal numbers as shown on the Drawing 19-2673-OR-E-5. System shall comply with NEMA ICS 1, 3, 4, 3.1, 4, and

6.

B. Operation: Accomplish speed control by adjusting the output frequency according to the desired reference speed. Adjust ac voltage and frequency simultaneously to

19-2673 Addendum No. 1 26 29 23- 6 provide the constant Volts/Hertz necessary to operate the motor at the desired speed.

The VFD must use pulse width modulation technology.

C. Rating:

1. Line Voltage: 480 volts, -5 percent continuous, -10 percent momentary, +10 percent, 3- phase.

2. Line Frequency: 60 Hz, ±2 Hz

3. Ambient Temperature: 5°C to 40°C

4. Altitude: Up to 3,300 feet above sea level.

5. Power Factor: Above 0.95 at full speed and rated load.

D. Performance:

1. Efficiency: Above 95 percent at 100 percent full speed, above 93 percent at 70 percent full speed.

2. VFD Inrush Current: Limited to less than 100 percent of motor full load

3. Duty Cycle: 6 starts per hour.

E. Features:

1. Provisions to accept the following control signals for automatic and manual operation:

a. FWD & REV Run signals from remote contact closure when specified.

b. A 4-20 mA dc signal for speed control. The VFD shall provide linear speed control of the motor from zero to full speed as the variable speed input signal varies from its minimum to maximum. Input impedance shall be 250 ohms resistive.

2. Motor speed indicator calibrated in percent of full speed.

3. Incoming line fused lockable disconnect or lockable main circuit breaker.

4. 24 VDC control circuitry and 480V-120V step down transformer.

5. Variable time delay for delaying motor drive restart after power failure; timer range shall be 0 to 120 seconds, with initial settings differing by 10 seconds for each drive;

provide module which causes multiple attempts to restart.

19-2673 Addendum No. 1 26 29 23- 7

6. Provision for automatic emergency shutdown in any mode, activated by the following:

a. Any additional abnormal conditions as shown on the Drawings. Provide for manual restart.

7. Auxiliary contacts for remote indication of “Run” and “VFD Fault.”

8. VFD able to withstand harmonic distortion and notching as defined in IEEE-519 for dedicated system (10 percent voltage distortion factor and 36,500-volt microseconds commutation notch area).

9. VFD operable with motor disconnected, in order to test VFD.

10. Linearity and repeatability accuracy of 3 phase output of 1 percent of analog input control signal regardless of input power voltage fluctuations between 437 and 505 volts.

11. Independent acceleration and deceleration controls, adjustable from 2 to 30 Hz per second.

12. Line reactor on the input side of 6-pulse drives, in the MCC unit enclosure for the drive.

13. Phase shifting autotransformer on the input side of 18-pulse drives, in the drive enclosure.

14. Label with fault current rating per NEC article 409.110 and arc flash warning label per NEC Article 110.16.

F. Protection: Protect VFD against the following conditions:

1. Reverse phase sequence and single phasing of input power.

2. Input power failure.

3. Input transient voltages, including peak suppression and snubbers, in accordance with ANSI C37.90.

4. Transmission signal interference.

5. Output overcurrent.

6. Input overcurrent.

7. Motor over temperature.

19-2673 Addendum No. 1 26 29 23- 8

8. Cabinet over temperature.

9. Under voltage: VFD shall automatically shut down if input voltage falls below preset limit with automatic restart upon return to a stable supply.

G. Construction:

1. 6-pulse VFDs mounted in motor control centers (MCCs) shall be of the same manufacturer chosen from Paragraph 2.01 above.

a. Door-mount the following devices:

1) HMI with the following indications:

a) Power On

b) Speed indication

c) Motor Run

d) VFD Fault Indication

e) External operating handle for the incoming line fused disconnect.

b. Control components shall be in accordance Section 26 27 16. Configuration of the enclosure and the components shall be as shown on the drawings.

c. Components: Mount components on circuit cards or modules, which can be adjusted or replaced in the field without the use of special tools.

d. Provide any additional I/O boards as required to perform the functions as shown on the drawings.

H. Spare Parts: Furnish two sets of spare power fuses for each size and type of fuse used;

furnish a minimum of five fuses of each size and type of control circuit fuse.

PART 3 EXECUTION

3.1 INSTALLATION

A. REQUIREMENTS: Section 26 05 00 AND Install in accordance with manufacturer’s instructions for the specified functional requirements.

B. Properly level and plumb VFDs so that doors will open and close freely.

C. Clean and repair scratched or damaged surfaces to “new” condition.

D. Provide the services of a factory trained service technician to inspect and check out each system before energizing.

19-2673 Addendum No. 1 26 29 23- 9

E. Per manufacturer’s instructions, lace power conductors to resist short circuit forces.

3.2 COMPONENT TEST PHASE

A. PROCEDURES: Section 01 75 16

B. Operate each drive from no load to full load and perform a spectrum analysis to verify that the waveform on the line side of the VFD is in compliance with IEEE 519 for general systems.

3.3 MANUFACTURER’S SERVICES

A. ON-SITE INSPECTIONS AND TRAINING: Provide a factory-trained manufacturer’s representative at the Site for the following activities. Specified durations do not include travel time to or from the Site.

1. INSTALLATION INSPECTIONS: Assist, supervise, and inspect the Contractor’s activities during installation.

2. TRAINING SESSIONS: Procedures: Section 01 75 16. Coordinate training with operations and maintenance staff schedules to ensure all required staff can attend.

END OF SECTION