Bid_Spec_Boiler-Feedwater-Skid_final.pdf

BOILER FEEDWATER CONDENSATE SKID SYSTEM

PART 1 –GENERAL

1.01 DESCRIPTION

A SCOPE

1. This section specifies requirements for a boiler feedwater tank and duplex pumping system, including requirements for system construction, components, materials, functional testing, quality and use. There shall be one

(1) system provided.

2. The manufacturer shall furnish all materials, equipment and incidentals required to install a boiler-feedwater system as specified herein.

B SYSTEM DESCRIPTION

1. The system shall include one (1) tank with standard openings including return, vent, chemical feed, overflow and drain. There will be two (2) pumps providing suction and supply for the feedwater and condensate. The tank and pumps will be mounted on to a single skid. System will also be provided with a chemical injection quill and piping for recirculation for the unit.

2. The skid shall be fitted with a control panel to provide direct controls for the pumps and associated switches. The control panel will include:

A. Motor Starters & Overload

B. Individual Pump Circuit Breakers

C. HOA Selector Switches

D. Pump Run Indicator Lights

3. The system shall be designed for the following operating conditions:

Number of Steam Boilers 2

Boiler Horsepower, HP 125

Max Steam, lbs 15

Max Water, lbs 30

Operating Pressure, psi 7-9

1.02 QUALITY ASSURANCE

A MANUFACTURER REQUIREMENTS

1. All equipment provided under this section shall be obtained from a single manufacturer, who shall:

A. Assume full responsibility for the completeness and proper operation of the feedwater and condensate system.

B. Have a minimum of 5 years of experience in design, fabrication and testing of paste lime slaking equipment of the size, materials and scope herein, and shall show evidence of at least ten identical design installations in satisfactory operation for at least five (5) years.

2. To ensure quality and complete unit responsibility, the complete system must be assembled and tested by the manufacturer at its facility and be a standard and regularly marketed product of that manufacturer. The manufacturer must have a physical plant, technical and design staff, and fabricating personnel to complete the work specified.

3. All costs including all such items as freight, taxes, and overhead and profit, shall be included in the lump sum or unit prices bid for the various Bid Items unless specifically noted otherwise.

4. All deliveries for equipment included as part of this spec must be made by January 15th, 2027.

B WARRANTY

1. The manufacturer shall warrantee that the equipment provided shall be free of defects in material and workmanship for a period of 12 months from installation and startup of the equipment. The warranty period shall not extend beyond 18 months from delivery of the system to the jobsite.

C PRODUCT SUBMITTALS

1. The following product data shall be submitted by the feedwater and condensate system manufacturer for review and approval by the engineer prior to the fabrication of the system:

A. Shop drawings and catalog literature showing dimensional information, details of piping and fabrication and erection of all materials and equipment furnished under this section

B. Drawing of general arrangement and major system components

C. Major system component information and descriptive literature for the following:

a) Pumps

b) Tank

c) Piping for Circulation

d) System controls and control panel details including power and control wiring diagrams, terminals, and numbers

e) Chemical injection quill

D. Installation instructions

E. Operating weight of all equipment

D OPERATION AND MAINTENANCE MANUALS

1. Detailed operation and maintenance (O&M) manual for the system shall be provided by the manufacturer. A total of two (2) copies of O&M manuals are required with an additional electronic copy.

E MANUFACTURER SERVICES

1. The manufacturer representative shall be present at the jobsite for shall be present at the jobsite for system startup, functional testing, and certification of proper installation.

2. Manufacturer shall provide operator training for: overall operation, maintenance, and troubleshooting for the system.

3. A manufacturer representative shall be available for at least one 8-hour day for on-site inspection, troubleshooting, training, and startup.

4. Manufacturer shall be within a 30 mile radius of the facility to provide on site service or replacement components.

PART 2 – PRODUCTS

2.01 PUMPS

A Pumps shall meet the following requirements:

1. Manufacturer and Model shall be Grundfos CR3 or approved equal

2. The pumps shall meet the design condition of providing approximately 13 gpm at 124 ft of total dynamic head to meet performance requirements.

3. Pumps shall be provided 1.5 HP, three phase, 460V TEFC motors

2.02 TANK ENCLOSURE

A Tank shall include the following features:

1. Approved Manufacturers: Fabtek or approved equal

2. Tank shall be constructed with 304 stainless steel and provided with a site gauge assembly and a 3" stainless steel dial thermometer

a) Tank shall include all standard openings including return, vent, chemical feed, overflow and drain

b) The height of the inlet for the condensate entering the tank shall not exceed 30”.

3. Tank capacity: 317 gallons

4. Tank Dimensions: 36” diameter by 72” length

5. Tank Receiver: Constructed with 304 Stainless Steel mounted directly to stand

6. Tank stand shall be constructed with Heavy-Duty Carbon Steel Angle Support Stand coated with Industrial Grade Black Paint

2.03 PIPE MATERIALS

A Recirculation and suction piping shall be 1-1/4” Schedule 40 304 Stainless Steel

1. Stainless steel isolation valves and wye-strainers will be provided with the piping in order to drain and isolate piping for maintenance

2.04 FEEDWATER SKID CONTROL PANEL

A Control panel shall be mounted and wired to the stand of the boiler-feedwater skid.

1. Skid and attached component dimensions shall not exceed a 46” x 81” footprint.

B Panel shall provide control for the dual continuous duty pumps for the boiler feed via the following

1. Power – Three phase, 460V

2. Enclosure – NEMA N3R

3. Alarms – Low Level Alarm Circuit

a) Switch – Type 9 316 Stainless Steel Alarm Switch

4. Disconnect – Main Non-Fused Disconnect

5. Standard Components

a) Motor Starts and Overloads

b) Individual Pump Circuit Breakers

c) HOA Selector Switches

d) Pump Run Indicator Lights

2.05 ANCILLARY COMPONENTS

A Chemical Injection Quill with 3/4” Connection

B Pump Recirculation Piping for Continuous Duty Operation

PART 3 - EXECUTION

3.01 FACTORY ASSEMBLY AND TESTING

A Each system shall be pre-assembled at the manufacturing location.

B Systems shall be tested at the location of assembly to assure they are in full operational and working order per the requirements of the specific design for the project and this specification.

C Factory testing shall include visual inspection of all equipment, complete assembly and functional operating testing of components including piping and instrumentation check, and verification of control panel wiring and operation.

3.02 DELIVERY AND INSTALLATION

A Material and equipment shall be protected during shipment and storage against physical damage, dirt, moisture, cold and rain. Damaged equipment shall be, as determent by the owner, placed in first class operating condition or returned to the source of supply for repair or replacement. Damaged paint or surfaces on equipment and materials shall be refinished to the satisfaction of the Owner.

1. Include a packing list of all items in each delivery along with complete instructions for handling, storing, unpacking, protecting and installing. These documents shall be submitted to the Owner’s project manager via email before equipment is delivered.

B Owner is responsible for the storage and handling on-site.

C Systems shall be installed per the manufacturer’s guidelines and recommendations.

Installation shall include the re-assembly of any items separately packaged for protection during shipment.

D Provide with the bid an estimated lead time. The lead time shall be the amount of time (in weeks) between Bid Award and arrival of equipment on-site. Lead time shall include time needed for show drawing submittals and review.

E It is the Owner’s responsibility to provide:

1) Piping for water, vent from vapor and overflow/drain

2) Wiring to/from system control panel for power, control and alarm interfaces, junction box, etc.

3) Anchor bolts, suitable concrete mounting pads and other incidentals as necessary to complete the installation.

3.03 FIELD START-UP

A A factory representative from manufacturer shall be present at the jobsite for initial system start-up and commissioning of equipment. Factory representative will ensure that system is properly installed, will start-up the system and train owner’s personnel.

3.04 IDENTIFICATION AND MARKING

A Boiler feedwater and condensate piping shall be marked and identified as required by all applicable jurisdictional building codes, statutes, standards, regulations and laws.

Non-Exclusive Any contract(s) resulting from this Request for Bid will not be an exclusive contract and the City reserves the right to hire other contractors, to perform similar work, and seek bids from other vendors.

Rights of the City The City reserves the right to reject all or any part of any bid, waive informalities, and award the contract to the lowest responsive and responsible contractors to best serve the interest of the City. Informality shall mean a minor defect or variation of a bid from the exact requirements of the Request for Bid which does not affect the price, quality, quantity, or delivery schedule for the goods, services or construction being procured.

Quantities The quantities specified in this Contract are estimated only. They may not indicate the actual quantity which will be ordered, since such volume will depend upon requirements which develop during the Contract period.

Quantities shown shall not be construed to represent any amount which the City shall be obligated to purchase under the Contract or relieve the Contractor of its obligation to fill all orders placed by the City.

3.05 INVOICE AND PAYMENT

All work requested under this Contract shall be placed on a City issued Purchase Order.

Contractor shall make all reasonable efforts to submit invoices and documentation in an electronic format, such as PDF or other format compatible with City software capabilities, in lieu of paper invoices and documentation, when so requested by City.

Upon delivery and acceptance of the service, the Contractor shall submit an invoice detailing the appropriate charges.

Invoices shall be submitted to:

City of Minneapolis 505 Fourth Ave S, Room 310 Minneapolis, MN 55415 Email: submitinvoices@minneapolismn.gov

Upon receipt of invoice and final inspection and acceptance of the service, the City will render payment within thirty (30) days unless any items thereon are questioned, in which event payment will be withheld pending verification of the amount claimed and the validity of the claim. The Contractor shall provide complete cooperation during any such investigation.

The City will not pre-pay for service. All bills shall state the location and dates of service being billed. All fees, taxes, charges, surcharges, and revenue payments are to be itemized.

No payment will be made for material stored off-site except in situations where payments may be considered by the City for materials which are stored in a secured area, to be verified by the City and where the Contractor maintains adequate insurance coverage protecting specific materials from loss. Proof of insurance shall be supplied prior to payment for any materials stored off-site