City of Waupaca, Wisconsin
REQUEST FOR BIDS
Impressed Current Cathodic Protection Systems For Sanitary
Industrial Park and Kewanis Park Lift Stations
1. SCOPE OF PROPOSAL
The City of Waupaca is requesting sealed bids from qualified contractors for the referenced project. The
work involved consists of installation of impressed current cathodic protection systems for two (2)
underground steel lift stations. The two (2) lift stations are: Industrial Park Lift Station and
Kewanis Park Lift Station. A map is included showing their approximate location.
All work shall be in compliance with all local and State rules and regulations. Applicants may review lift
station drawings at the Waupaca Wastewater Treatment Plant. To coordinate a review time or to ask
questions about the lift stations; please call 715-258-4424.
2. SPECIFICATIONS
Publications listed within this specification are referenced within the text by the basic designation as follows:
Institute of Electrical and Electronics Engineers (IEEE)
NACE International (NACE)
National Fire Protection Association (NFPA)
Underwriters Laboratories (UL)
General
Provide a complete, operating impressed current cathodic protection system in accordance with NFPA 70,
the applicable federal, state and local regulations, and the requirements of this contract. The system includes
planning, inspecting the installation, adjusting and testing cathodic protection and test system using
rectifiers and impressed current anodes, supplemented with sacrificial anodes as needed. The cathodic
protection system shall also include cables, connectors, splices, corrosion protection test stations, power
panels, and any other equipment required for a complete operating system providing the specified
protection. The cathodic protection system includes (a) calculations for rectifier, anodes, and any
recommendations for supplementing or changing the minimum design criteria to provide the specified
potentials and (b) equipment, wiring, and wiring devices necessary to produce a continuous flow of direct
current from anodes in the soil electrolyte to the structure surfaces.
Anode configuration and size shall be designed and proposed by the contractor. A successful design will
provide the number and type of anodes required to achieve minus 850 millivolts "instant off" potential and
shall be required on the structure. Details provided are indicative of the general type of material required
and are not intended to restrict selection of materials or of any particular manufacturer. The anode system
shall be designed for a life of 25 years of continuous operation.
Corrosion Expert
Obtain the services of a "corrosion expert" to supervise, inspect, and test the installation and performance
of the cathodic protection system throughout the duration of the project. "Corrosion expert" refers to a
person, who, by reason of thorough knowledge of the physical sciences and the principles of engineering
and mathematics, acquired by professional education and related practical experience, is qualified to engage
in the practice of corrosion control of buried metallic piping and tank systems. Such person shall be
accredited or certified by the National Association of Corrosion Engineers (NACE) as a NACE Accredited
Corrosion Specialist or a NACE certified Cathodic Protection (CP) Specialist or be a registered professional
engineer who has certification or licensing that includes education and experience in corrosion control of
buried or submerged metallic piping and tank systems, if such certification or licensing includes 5 years’
experience in corrosion control on underground metallic surfaces of the type under this contract.
Anodes and Bond Wires
Install anodes in sufficient number and of the required type, size and spacing to obtain a uniform current
distribution of 2.5 milliamperes per 0.09 square meters (1 square foot) minimum to underground metal
surfaces. For each cathodic protection system, the metallic components and structures to be protected shall
be made electrically continuous. This shall be accomplished by installing bond wires between the various
structures. Bonding of existing buried structures may also be required to preclude detrimental stray current
effects and safety hazards. Provisions shall be included to return stray current to its source without
damaging structures intercepting the stray current. The electrical isolation of underground facilities in
accordance with acceptable industry practice shall be included under this section. Storage for anodes and
all sensitive equipment and materials will be the responsibility of the contractor. Protect all such equipment
and material from inclement weather.
Rectifier, Transformer, Meter, Circuit Breaker, and Fuses
The proposed rectifier unit shall consist of a transformer, rectifying elements, transformer tap adjuster,
terminal block, one dc output voltmeter, one dc output ammeter, and/or one combination volt-ammeter, one
toggle switch for each meter, fuse holders with fuses for each dc circuit, variable resistors, an ac powersupply circuit breaker, lightning arresters for both input and output, all wired and assembled in a
weatherproof cabinet. The overall efficiency of the rectifier shall be no less than sixty-five percent (65%)
when operated at nameplate rating and shall be capable of supplying continuous full rated output at an
ambient temperature of 44 degrees C (112 degrees F) in full sunlight with expected life in excess of 10
years. Rectifying elements shall be connected to provide full-wave rectification and shall be protected
against over-voltage surges.
Transformer shall conform to UL 506.
Meters shall be accurate to within plus or minus two percent (2 %) of full scale at 27 degrees C (80 degrees
F), and shall possess temperature stability above and below 27 degrees C (80 degrees F). Meters shall also
possess temperature stability above and below 27 degrees C (80 degrees F) of at least one percent (1%) per
5 degrees C (10 degrees F). Separate meters shall be 63.5 mm 2-1/2 inch nominal size or larger.
A fully magnetic, properly rated non-terminal type circuit breaker shall be installed in the primary circuit
of the rectifier supply transformer.
Cartridge-type fuses with suitable fuse holders shall be provided in each leg of the dc circuit.
Cabinet shall be constructed of either stainless steel or molded fiberglass reinforced polyester, and shall be
provided with a full door. The enclosure shall have oil-resistant gasket. The door shall be hinged and have
a hasp that will permit the use of a padlock. The cabinet shall be fitted with screened openings of the proper
size to provide for adequate cooling. Holes, conduit knockouts, or threaded hubs of sufficient size and
number shall be conveniently located. A complete wiring diagram of the power unit showing both the ac
supply and the dc connections to anodes shall be on the inside of the cabinet door. All components shall
be shown and labeled.
Grounding
Grounding provisions shall comply with NFPA 70 and UL 467 including a ground terminal in the cabinet.
The grounding conductor from the terminal to the earth grounding system shall be solid or stranded copper
not smaller than No. 6 AWG. The earth grounding system shall consist of one or more ground rods. Ground
rods shall be of copper-clad steel conforming to UL 467, zinc-coated steel conforming to IEEE C135.30,
or solid stainless steel not less than 16mm or 5/8 inch in diameter by 2.4m or 8 feet in length. Rods shall
be driven full length into the earth. Sectional type rods may be used. The resistance to ground shall be
measured using the fall-of-potential method described in IEEE 81. The maximum resistance of driven
ground shall not exceed 25 ohms under normally dry conditions. If this resistance cannot be obtained with
a single rod, additional rods may be coupled and driven with the first rod. Connections below grade shall
be fusion welded. Connections above grade shall be fusion welded or shall use UL 467 approved
connectors.
Wiring
A complete wiring diagram of the power unit showing both the ac supply and the dc connections to anodes
shall be on the inside of the cabinet door. All components shall be shown and labeled.
Wiring shall be installed in accordance with NFPA 70 utilizing type TW or RHW or polyethylene
insulation. Fittings for conduit and cable work shall conform to UL 514A. Outlets shall be of the threaded
hub type with gasketed covers. Conduit shall be hub type with gasketed covers. Conduit shall be securely
fastened at 2.4m or 8 foot intervals or less. Splices shall be made in outlet fittings only. Conductors shall
be color coded for identification. Cable for anode header and distribution shall be stranded copper wire
with cathodic protection high molecular weight polyethylene insulation. Wire diameter size shall be noted
in detail drawings listing AWG and inches.
Anode connecting wire shall be stranded copper wire with type CP high molecular weight polyethylene
insulation, 600 volt rating. Cable-to-anode contact resistance shall be 0.003 ohms maximum.
Test wires shall be No. 12 AWG stranded copper wire with NFPA 70 Type TW or RHW or polyethylene
insulation. Resistance wire shall be AWG No. 16 or No. 22 nickel-chromium wire.
Training
The Contractor shall coordinate with the manufacturer of the cathodic protection system equipment to
conduct and perform training for the Wastewater Treatment Plant operating staff. The training shall take
place during normal work hours of 6:45AM to 3:00PM Monday through Thursday and shall be made
available after the system is functionally completed but prior to final acceptance tests. Provide training on
items contained in the operating and maintenance instructions, as well as demonstrate routine maintenance
operations, and testing procedures. Training cost shall be provided and covered on a per hour basis.
Tests and Measurements
Perform and submit test reports of the installed system including: baseline potentials, close interval potential
survey, interference tests, anode output test, and final system verification.
Execution
Acceptance criteria for determining the adequacy of protection on a buried structure shall be in accordance
with NACE International Specifications and as a negative voltage of at least minus 850 millivolts. The
negative voltage is as measured between the steel lift station structure and a saturated copper-copper
sulphate reference electrode contacting the (electrolyte) earth. Determination of this voltage shall be made
with the cathodic protection system in operation. Voltage drops shall be considered for valid interpretation
of this voltage measurement. A minimum of minus 850 millivolts "instant off" potential between the steel
lift station being tested and the reference cell shall be achieved over 95 percent of the area of the structure.
Obtain adequate number of measurements over the entire structure and record achievement of minus 850
millivolts "instant off".
3. SUBMITTALS
•
•
•
•
Submit (3) three copies of Detail Drawings for each lift station that includes:
o A complete list of equipment and material including manufacturer's descriptive and
technical literature.
o System design calculations including soil resistivity, installation instructions and certified
test data stating the maximum recommended anode current output density. Provide
system design showing potentials of at least minus 850 millivolts that include
compensation for IR drops.
o Detail drawings shall contain complete wiring and schematic diagrams and any other
details required to demonstrate that the system has been coordinated and will function
properly as a unit.
o Description and specification on type and size of anodes along with proposed depth and
spacing around lift station structure.
o The installation shall meet the specified protection criteria for a 25 year life.
Certification and documentation for “Corrosion Expert” showing name, qualifications, experience
and name of firm.
Description of future maintenance requirements and estimated costs.
Upon work completion and prior to acceptance provide three (3) copies of operation and
maintenance manuals.
4. HISTORY
•
•
•
•
Kewanis Park Lift Station installed 1975
Industrial Park Lift Station installed 1979
Cathodic Protection System Survey was conducted September 2010. The results and analysis
determined that no Structure-to-Soil Potentials met the minus 850 mV criteria per NACE
International Standard RP0285-95. Installation of cathodic protection was recommended.
Corrosion Survey was conducted April 2016. Additional structure/earth potentials taken around
the lift stations. Potentials reported at minus 460 – 480 MvDc. Plate thickness measurements were
recorded and determined little to no loss in thirty (30) – forty (40) years. It was determined that
impressed current system was needed due to the structure current requirement and ground
resistance being beyond the useable range of galvanic anodes.
5. WARRANTY
Provide a one (1) year warranty on failures or defects due to workmanship or material. Within one (1) year
of project completion, perform any necessary repair or replacement (at contractor’s option) at no charge to
the City of Waupaca.
6. BID GUARANTY
A certified check or bank draft payable to the Treasurer of the City of Waupaca, or a satisfactory bid bond,
in an amount not less than five percent (5%) but not more than ten percent (10%) of the estimated bid shall
accompany each bid as a guaranty that if the bid is accepted the bidder will execute and file the proper
contract and bond within fifteen (15) days after the acceptance of the bid. If the successful bidder fails to
execute and file the required contract and bond, the amount of the check or the bid bond shall be forfeited
to the City of Waupaca as liquidated damages.
7. PRE-QUALIFICATION
All bidders must complete a bidder Pre-Qualification Statement and submit a minimum of five (5)
business days prior to bid opening (April 11, 2017). Failure to submit this statement may disqualify your
bid. A Pre-Qualification Form must be requested from the City Clerk’s office by calling (715) 258-4411
or found on the City of Waupaca website at http://www.cityofwaupaca.org/blog/category/rfp/.
8. INSURANCE
The selected contractor shall maintain adequate insurance in an amount sufficient to protect the City of
Waupaca from any and all public liability and workers compensation claims at all times during the
performance of this contract. A copy of the contractor’s insurance with the City of Waupaca named as an
“additional insured” will be required prior to signing of the contract.
9. CONTACT PERSON
All comments, questions, request a site visit, or to request additional information regarding this proposal
shall be made to Justin Berrens, City of Waupaca Director of Public Works/City Engineer, (715) 2584420 or Jeff Dyer, Sewer Superintendent, (715) 258-4424. All such comments, questions, and requests
will be received until Wednesday April 12, 2017.
10.PROTECTION OF EXISTING FACILITY AND EQUIPMENT
Use every reasonable precaution to prevent damage to all property both public and private; including
poles, trees, shrubbery, adjacent to or interfering with the work; all overhead structures including wires,
cables, etc.; and all underground structures including water or gas shut-off boxes, water and sewer
transmission lines, pipes, conduits, etc.
The contractor shall protect all existing equipment and facilities and shall be responsible for any damaged
done to those facilities as a result of this work. Restore to a condition similar or equal to that existing
before causing the damage, as the City directs or in the case of private property; in a manner acceptable to
the property owner. If the contractor fails to restore, repair, or replace equipment and facilities within a
reasonable time; the City may provide the work and will deduct costs from payments due the contractor
under the contract.
11.SEALED BID SUBMITTALS AND REVIEW
Sealed bids will be received and read at 2:00pm on Tuesday, April 18, 2017 at the office of City Clerk,
City of Waupaca, 111 S. Main Street, Waupaca, Wisconsin 54981. Bids must be sealed and clearly
labeled “Impressed Current Systems For Industrial Park and Kewanis Park Lift Stations”.
The City of Waupaca reserves the right to accept or reject, any bid or portions thereof deemed to be in the
best interest of the City of Waupaca.
12.PROJECT TIMELINE, SCHEDULE, & COMPLETION DATE
April 11, 2017
April 12, 2017
2:00PM, April 18, 2017
6:00PM, May 2, 2017
May 3 – 31, 2017
September 30, 2017
Pre-qualification statement due
Last day to entertain questions/request
Bids due
Bid award recommendation to Common Council
Contract documents prepared and executed
All work complete
Plan and execute the work to meet the all work complete date of September 30, 2017. A $500.00 fine will
be imposed for each and every day that any portion of the work is not completed by September 30, 2017.
The contractor shall submit a schedule in writing to include activities that describe essential features of the
work. Identify the contemplated start and completion date. Hand written schedules will be accepted.
13.AS-EQUAL BID SUBMITTALS
All variances from the project specifications shall be clearly identified by the bidder in the bid submittal.
Justification that the identified variance will provide for an as-equal or comparable product or results must
be submitted. Final determination that the variance is acceptable and is considered as-equal to the stated
specifications is to be made by the City of Waupaca.
14.CITY DOCUMENTS & ADDENDUM
Proposal
forms,
bid
request,
and
pre-qualification
form
can
found
at
http://www.cityofwaupaca.org/blog/category/rfp/. Paper copy of pre-qualification statement can
be made by calling City Clerk’s office at 715-258-4411.
City of Waupaca, Wisconsin
Impressed Current Systems For Industrial Park and
Kewanis Park Lift Stations
BID FORM
The undersigned, having examined the contract documents and specifications for services
required for the City for the project titled Impressed Current Systems For Industrial Park and Kewanis
Park Lift Stations, hereby submits this bid form by 2:00pm on Tuesday April 18, 2017 and agrees to
the terms stated at the prices quoted on the attached bid form sheets for a period of 60 days.
The undersigned bidder, submitting this bid form proposal, hereby declares and agrees to be
bound, and to perform the work, in accordance with all the terms, conditions, and requirements
of within the provisions, and Request for Bids are made part hereof as fully and completely as if
attached hereto.
Contractor Name:_________________________________________________
Address:________________________________________________________
________________________________________________________
Phone Number:______________________________ FAX Number: ___________________
Email Address: ______________________________
By:____________________________________Title:_________________________________
Printed Name:____________________________________
Date:______________________________
Impressed Current Systems For Industrial Park and
Kewanis Park Lift Stations
BID FORM (CONTINUED)
The following BID SPECIFICATIONS pertain to the materials and services to be provided and their
associated costs:
Kewanis Park Lift Station & Industrial Park Lift Station
Mobilization
Lump Sum
$__________
Install Cathodic Systems Industrial Park Lift Station
Lump Sum
$__________
Install Cathodic Systems Kewanis Park Lift Station
Lump Sum
$__________
Training
Per Hour
$__________
Total
$__________