35-20250703092315 JCUA.pdf

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Jackson County Utility Authority

Pascagoula, Mississippi

Eric Page

Executive Director

PURCHASE OF GRIT CLASSIFIER SYSTEM

2C-GAUTIER POTW

REVERSE AUCTION

Deadline for Receiving Un-Priced Bid Proposals

10:00 am Local Time

July 22, 2025

Reverse Auction

Begins at 10:00 am Local Time

Ends at 10:30 am Local Time

August 5, 2025

Amy Thompson

Purchasing Supervisor

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INFORMTION TO BIDDERS

GRIT CLASSIFIER SYSTEM

The Jackson County Utility Authority is accepting un-priced bid proposals until 10:00 A.M., July 22, 2025, for the purchase of a Grit Classifier System.

Bid Form must be submitted along with equipment/product technical literature by 10:00 A.M., July 22, 2025 at the Authority's office located at 1225 Jackson Ave., Pascagoula, MS 39567 or by electronic submission at www.centralbidding.com. Submissions will be evaluated, and vendors submitting acceptable bids/proposals will be invited to submit priced bids during the electronic reverse auction. Bidders will be notification to participate in Reverse Auction (based upon acceptance of Un-priced bid proposals) on July 31, 2025.

Priced bids will be held via Electronic Reverse Auction beginning at 10:00 A.M., August 5, 2025 and end at 10:30 A.M., August 5, 2025 at www.centralbidding.com. For any questions relating to electronic submittals, and/or bidding process, call Central Bidding at 225-810-4814.

Delivery of the bid is the sole responsibility of the Bidder. The Authority is not responsible for lost, misdirected or late mail. The Authority reserves the right to reject any, and/or all, bids received.

Submission of a bid proposal constitutes agreement on the part of the Bidder to all aspects of the requirements and specifications of this document.

Delivery cost shall be included in the bid price. All bids must be signed and dated on the Bid Form provided. Delivery of portable bypass pump shall be made within 120 days after award and issuance of a purchase order due to emergency nature of purchase.

It is the intent of the Authority to award the bid to the bidder providing the lowest and best bid.

The basis of the award shall be dependent on the most responsible bid submitted. Consideration will be given to price, delivery time, analyses and comparison of equipment specifications details, and any other items of concern to the Authority.

Complete specifications and bid information may be obtained by contacting Amy Thompson, Purchasing Supervisor, at the Jackson County Utility Authority, 1225 Jackson Avenue, Pascagoula, MS 39567, email: athompson@jcua-ms.us or Tel: 228-762-0119, ext. 5338. Official bid documents can also be downloaded from Central Bidding at www.centralbidding.com.

Electronic reverse auction bids can be submitted at www.centralbidding.com.

It shall be incumbent upon the Bidder(s) to understand the specifications. Requests for clarifications shall be in writing and shall be submitted to the Authority at least five (5) days prior to the time and date set for the bid opening. The specifications and conditions of this bid are intended to promote competition to the maximum extent practicable. It is the responsibility of the Bidder to notify the Authority's Purchasing Agent of restrictive competition. The notice of restrictive specifications/conditions must be submitted to the Authority at least five (5) days prior to the bid opening. Failure to conform to this requirement may be cause for any protest to be rejected.

http://www.centralbidding.com/ mailto:athompson@jcua-ms.us

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BID SPECIFICATIONS

FOR

DESCRIPTION

This section specifies the grit classifier equipment. The equipment shall be suitable for removing grit from domestic wastewater being pumped from a grit settling chamber, while separating and dewatering grit to high total solids content prior to discharging to dumpster.

The grit classifier equipment furnished under this section shall employ, integral grit separation tank with simultaneously operating inclined shaft less or shafted dewatering screw auger that effectively separates grit from the sediment at the separation tank.

A. Unit Responsibility and Equipment Layout Specifications:

1. Unit Responsibility: The Equipment Supplier is responsible for assigning unit responsibility to the grit classifier manufacturer.

2. Onsite Measurement and Layout: The final equipment layout and connections must be completed by onsite measuring by the supplier and/or the manufacturer of the grit classifier system to ensure the unit meets the dimensions of the plant's headworks processes.

Equipment shown in the original drawings indicates approximate size and layout.

B. Shipment, Protection, and Storage:

1. The specifications for equipment shipment, protection, and storage are primarily determined by the equipment's supplier and manufacturer.

2. The equipment shipment, protection, and storage must adhere to the guidelines provided by the equipment supplier and manufacturer. This includes any specific requirements they have for handling, packaging, and storing the equipment to ensure its integrity and functionality.

C. Submittal Requirements

A. The following submittals shall be provided:

The provided text outlines submittal requirements, and we can analyze it for grammatical correctness and clarity. The text appears to be a list of items that need to be submitted, likely for a construction or engineering project. Let's examine each point.

1. Manufacturer, model and type.

2. Complete installation and assembly drawings, showing the manufacturer's dimensions, weights, and loadings; location of all piping, electrical, instrumentation, and structural connections. Lifting point and equipment weight.

3. Motor submittal information.

4. Gear drive data including service factor, efficiency, torque rating and materials.

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5. Manufacturer's data confirming conformance to the specified conditions.

Including, as a minimum, equipment rated hydraulic capacity, head loss, and overflow rate, horsepower, electrical requirements, and efficiency.

6. Catalog data on all ancillary electrical components.

7. Control panel electrical schematic and layout drawings indicating the front door and rear panel equipment arrangement and dimensions.

8. Motor submittal information.

9. Installation Manual containing instructions to be followed in the installation of the grit classifier, motor, gearbox and local control panel. The manual, as a

a. Major parts list including weights of component parts.

b. Procedures to be followed in unpacking and unloading, including directions indicating proper methods for moving the equipment.

c. Instructions for field assembling of match marked components as they will be shipped.

d. Wiring instructions for alignment and connection of the grit classifier and motor.

e. Instructions for grounding the motor.

f. Instructions for the connection of power cables, lubrication lines, and lifting cables.

g. Wiring instructions for connecting the local control panel to the SCADA control/monitoring PLC and the plant control panel via Ethernet.

h. Site storage and protection requirements for screening equipment prior to installation.

10. Manufacturer's warranty agreement.

11. Operations and Maintenance Manual.

12. List of manufacturers included spare.

E. Design Requirements:

A. Operating Conditions:

1. The grit slurry will be comprised of sand, snails, sticks, gravel, industrial solvents, detergents, and organic solids. The minimum rated continuous duty hydraulic slurry application rate for the grit washer unit shall be 220 gallons per minute. Grit processing recovery of 95% of 150 mesh. Grit discharged from unit shall contain no more than 25 percent moisture, 10 percent total organic, suitable for landfill disposal.

2. The grit classifier with integral grit separation tank with cover, gear motors, shaft less or shafted grit conveying screw auger, and controls.

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Component

Classifier and screw housing, plates and sheets

Support bars, angles, and shapes

Support tubes and process tubes

Dewatering screw

Bolts, washers, nuts

Material

304 or 316 Stainless Steel

F. Equipment:

A. General:

1. Equipment manufacturer shall furnish all anchor bolts of sufficient size and strength.

2. Grit Classifier shall be manufacturer's standard cataloged product modified to provide compliance with the Drawings, specifications and the service conditions as specified and indicated.

3. Welding shall be in accordance with AWS D1.1.

1. Grit classifier manufacturer shall provide grit classifier unit, motors, gear reducers, controls and control panels, and lifting attachments as a complete integrated package to ensure proper coordination, compatibility, and operation of the systems.

4. Bypassing capabilities- The system must allow for bypassing of the grit classifier for maintenance.

5. Screw Auger Drive System:

a. Motor:

1) TEFC.

2) 460 V, 3 phase

3) 1 horsepower minimum.

4) Maximum Speed: 1800 rpm.

5) Explosion-proof for installation in Class I, Division 1, Group D, hazardous, corrosive, and wet area.

6. Tank Assembly- The grit collection tank shall be constructed from robust steel, suitable for the intended application in a wastewater or industrial environment. The steel shall be carbon steel, conforming to ASTM A36 or equivalent, with appropriate corrosion protection for the exterior surfaces, such as a high-quality industrial paint system. - Non- Airtight The tank design shall be non-airtight, meaning it is open to the atmosphere or adequately vented to prevent pressure buildup and allow for easy access for inspection and maintenance. This design facilitates gravity flow or low-pressure discharge into the tank and prevents vacuum conditions during operation or draining. The tank shall include necessary inlets, outlets, and overflow provisions. The tank shall be supplied with a standard steel tank support structure. This support shall be fabricated from structural steel sections, conforming to ASTM A36, designed to adequately support the full weight of the tank when filled with process fluid and grit, as well as any ancillary equipment mounted on the tank. The support structure shall be designed for stability and ease of installation on

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7. Grit Chute-A grit discharge chute shall be provided for the efficient transfer of separated grit from the unit to a collection point or subsequent dewatering equipment.

8. Local Control Panel- Provide a complete factory-wired control panel, for each unit, including, but not limited to, the following items:

a. Enclosure rated NEMA 4X for installation on an Outdoor.

b. Combination motor starters for each motor. Each starter shall consist of a motor circuit protector, three phase motor current overload unit, and motor current monitor.

c. Main circuit breaker.

d. Control power transformer with two primary fuses and one secondary fuse, with blown fuse indication.

e. Relays, timers, control switches, pushbuttons, indicators, PLC and other devices as required for proper operation.

f. Terminals for connection of all external wiring connections.

g. Programmable Logic Controller (PLC).

G. Instrumentation and Controls:

Protection:

1. The grit auger shall have thermal protection, which should cut the power off to the respective motor and to the control circuit of the motor starter, regardless of whether the motor is operating under HAND or AUTO mode. An overload indicating light for each motor shall be provided. The thermal overload protection shall be sized according to the motor nameplate full load rating. A manual reset push button shall be required for each motor, which shall re-enable the control.

Loss of Power:

1. In the event of a power outage, the equipment shall resume normal operation once power is restored. There shall be no intervention required to have the equipment restart, regardless of operating in MANUAL or AUTO.

H. Product Data:

A. The following product data shall be provided

1. Range and setting of indicators, instruments, timers, and other related devices.

2. Operating and maintenance manuals and information.

3. Motor product data.

4. Equipment warranty.

5. Electrical power, control, and instrumentation wmng and interconnection diagrams.

***END OF SPECIFICATIONS***

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BID FORM

FOR

BIDS TO BE RECEIVED BY:

I certify the equipment being offered meets or exceeds the specifications listed above.

Bidder (Company):

Address:

Contact Person:

Telephone:

Email:

Delivery Time:

(Order is subject to cancellation if delivery is not met by the delivery time)

Signed by: (Print Name and Title)

Signature:

Date: