20242064_A1_Attachment B.pdf
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- Attached to
- ITB 20242064 Digester and SHT Coating
- Solicitation number
- S-KE0010-00010555
- Issued by
- Lane County, Oregon
About this file
This document contains the specifications for a state and local contract opportunity issued by the City of Eugene, Oregon and Lane County, Oregon to recoat the interior roof of the #1 Anaerobic Digester and make coating repairs to the interior cover of the #1 Sludge Holding Tank. The work includes surface preparation, application of a 100% elastomeric polyurethane coating system for the digester, and application of a 2-part premium novolac epoxy coating system for the sludge holding tank. The project requires the contractor to provide all permits, materials, labor, supervision, equipment, and quality testing. The work is to be completed within 70 days of the notice to proceed.
The contract specifications provide detailed requirements for the coating materials, surface preparation, application methods, curing, and inspection. Pricing terms are not included, but the contract documents indicate the work must comply with all applicable local, state, and federal regulations, including OSHA requirements. The contract opportunity is open to all qualified bidders, and there is no mention of any set-asides or incumbent contractors.
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ATTACHMENT B: 2-PART PREMIUM NOVOLAC EPOXY COATING SYSTEM (SHT #1)
5.01 GENERAL
A. This specification details the procedures recommended by Carboline for the repair and application of PLASITE 4550-S protective coating system to the interior roof of #1 Sludge Holding Tank.
B. The Contractor should review this specification and consult Supplier regarding its interpretation, disapproval, or request for procedure changes.
Deviations from this specification should be discussed and agreed to by Owner.
C. The coating material manufacturer’s current product data sheets are to be used in conjunction with and become a part of this specification. The Contractor should adhere to all accommodations of product shelf life, mixing ratios and acceptable thinners.
D. The coating system is to be applied in a single coat. The recommended coating dry film thickness for this service will vary between 25 mils (minimum) to 35 mils, with acceptable spots at 45 mils.
E. It is the Contractor’s responsibility to compute and supply adequate ventilation to prevent explosion and toxicity hazard conditions as prescribed by standards of good safety practices, Local and State regulations, OSHA and other Federal regulations.
5.02 COATING MATERIALS
A. Lining material should be PLASITE 4550-S, or approved equal, consisting of one coat. Reference: Carboline product data sheet Plasite 4550-S.
5.03 COLORS
A. Light Gray.
5.04 EXECUTION
A. Preliminary Inspection
1. Before any coating is applied, the interior surfaces of the vessel shall be inspected to see that the following has been done. As per NACE Standard RP0178 or Plasite PA.
ITB 20242064 Digester and Sludge Holding Tank Coating 1
B. All weld splatter, sharp projections, slivers and pits shall be removed. Weld metal should be used to fill repairs. Putty should not be used without consulting Owner.
C. Welds that are rough, irregular and not well formed shall be corrected by grinding smooth.
D. All sharp corners and edges shall be rounded to at least a 1/8” radius.
E. No other conditions exist which would shorten the expected life of the applied coatings.
F. Used vessels. (Based on the previous service environment, decontamination may be required.)
1. Decontamination shall be performed by one or a combination of the following methods:
a. Prebaking at 400°F or minimum of 50°F above maximum service temperature for 4 hours.
b. Steaming for 24 hours with 15 psi steam.
c. Ultra high pressure (30,000 psi) washing.
d. High pressure washing with cleaning or neutralizing chemicals.
2. Decontamination shall be verified by the use of a chloride test kit, pH test or black light, whatever is dictated by the previous service conditions.
5.05 SURFACE PREPARATION
A. Oil and grease shall be removed from the surfaces to be coated with a suitable safety solvent prior to abrasive blasting.
1. Vessel design and fabrication details shall be in accordance with NACE RP0178. All sharp edges and welds shall be ground smooth to a rounded contour in accordance with NACE Weld Preparation Designation “D” and all weld splatter should be removed prior to abrasive blasting.
2. Non-carbon steel parts that will not be coated should be removed and/or protected prior to blasting, including but not limited to, hatch covers, hatch rings, outlet valves and vents. The lining should be terminated on the non-carbon steel approximately 1” past the interface.
3. The compressed air used for blasting shall be free of water and oil. To determine cleanliness, blast without abrasive into a white cloth. The trap and separators shall be blown down until subsequent cloth tests show no oil or water contamination.
4. All weld seams shall be individually blasted prior to blasting other areas of the vessel. Weld seams are the areas of early coating failure.
Removal of contaminants and achieving the proper anchor pattern in the heat affected zone at the welds is critical to the service life of the lining.
ITB 20242064 Digester and Sludge Holding Tank Coating 2
5. All loose existing coating shall be removed to provide a sound coating system. Hard edges of existing coating shall be feathered to provide a smooth transition from bare steel to existing sound coating.
6. Existing coating shall be abraded 4” – 6” during the abrasive blast operation. Existing coating to be coated over shall have a dense, consistent surface profile with all gloss of the coating being removed.
B. Bare Metal Surfaces shall be blasted to a "white metal" in accordance with SSPC-SP5 or NACE No. 1.
1. The anchor pattern or “tooth” in the metal shall be a minimum of 4 mils.
Proper abrasive should be a sharp natural abrasive, steel grit, slag grit similar to or equal to Black Beauty BB1040 or other abrasives having a sharp, hard-cutting surface, properly graded, dry and of the best quality and of proper size to produce the specified anchor pattern.
2. Natural abrasives such as flints and slags shall be used only once and not recycled.
3. Recycling of steel grit will be permitted when new grit is added on a regular basis to maintain the media size. The recovery system must be a commercially manufactured air wash system capable of removing all media fines and contaminants from the blasting process.
C. All internal surfaces shall be vacuum cleaned to remove all blast media and dust after blasting is completed. External surfaces may be air blown clean using dry, oil free air. Magnets are suggested to remove steel grit particles not removed by other methods.
1. No visible oxidation shall be permitted between the time of blasting and priming the blasted surface.
2. The interior of the vessel shall be protected from moisture from the time of blasting to the time of application of the lining.
5.06 COATING APPLICATION
A. Before starting coating application, it is recommended that the Contractor read all available safety data including, but not limited to OSHA approved material Safety Data Sheets, product data sheet and backup label.
B. PLASITE 4550-S consists of two parts which must be applied using a plural or single component spray rig, Consult the technical bulletin or tech service for further information. Reference: Carboline product data sheet 4550-S.
1. Do not thin the coating material unless authorization has been given by Carboline Technical Services. Note: Plasite 4550-S can only be thinned if spraying with a single component spray rig.
a. When using a plural component spray rig the required temperature of the material for spraying is: Part A- 110 degrees F, Part B- 90- 100 degrees F.
ITB 20242064 Digester and Sludge Holding Tank Coating 3
b. When using a single component spray rig the required temperature of the material for spraying is between 75-85 °F to achieve optimum atomization.
c. The lining application must not proceed until the substrate temperature is a minimum of 5°F above the dew point. Minimum air and/or surface temperature at the time of application shall be above 50°F. The ambient and substrate temperatures shall be above 50 °F for 36 hours after coating is applied, and will be required for proper polymerization. Substrate temperature, relative humidity, dew point and air temperatures should be taken and recorded at least 1 hours before application and every 4 hours during application, unless weather conditions dictate otherwise.
C. The weld seams should be scrub striped before spray application begins.
1. The striping should be performed with a good quality bristle brush using
PLASITE 4550-S.
2. Scrub striping is accomplished by moving the brush back and forth in a scrubbing motion to work the primer into crevices and undercut areas of the welds.
3. Bristles left on the surface shall be removed before the coating dries.
D. All areas subject to overspray and drips (such as the vessel floor) shall be protected by a suitable covering while spraying other areas in the vessel.
E. Plural component spraying: Use a fixed ratio 4 to 1(by volume) plural component spray rig such as: A Grace King Hydra-Cat (or equal) with heated hoppers, in line heaters, heated hoses to mixer manifold through a static mixer to a 50’ whip hose followed by a silver gun (Binks 1M or equal) utilizing a reverse “a” tips from 0.019 to 0.035 size.
F. Single component spraying: Use an air motor with an air ratio of 45 to 1 or larger such as: a Graco “King” airless spray pump followed by a silver gun (Binks 1M or equal) utilizing a reverse “a” tips from 0.019 to 0.035 size.
G. Air supply shall be uncontaminated.
H. Apply the Plasite 4550-S as a single coat application.
I. Apply a crisscross multi-pass, moving gun at a fairly rapid rate, maintaining a wet appearing film. Additional multi-passes may be applied until you have a film thickness of approximately 25 to 35 wet mils (measured on a wet film thickness gauge).
J. Venting (optional) from the bottom of the vessel is recommended during the application and initial curing process.
ITB 20242064 Digester and Sludge Holding Tank Coating 4
K. Overcoating (tie-in areas) to previously applied coating (Plasite 4550-S). Only apply material to existing coating that has been properly prepared – DO NOT
APPLY TO UNPREPARED EXISTING COATING.
1. Intercoat preparation is necessary to ensure proper bonding. Review section 5.09 for proper procedure for intercoat preparation.
2. Substrate temperature, relative humidity, dew point and air temperatures should be taken and recorded after application to ensure minimum cure requirements are met.
L. Final coat is only needed in areas where the application is substandard due to low mils. In order to achieve a final thickness of 25-35 mils repeat Steps 5.06;G and 5.06;K, using PLASITE 4550-S, until homogenous film of 25 to 35 mils is obtained.
1. Topcoat shall be smooth in appearance and holiday-free as determined with a high voltage holiday tester. Use 100 volts per mil as a standard for spark testing.
M. Defects shall be sanded smooth and recoated for retest for film thickness and holidays.
5.07 CURING
A. Normally, polymerization and curing will take place in 36 hours at 70°F or 2 days at75°F. If the temperature is in the range of 50 to 75°F, extended curing may be required.
B. Curing must be completed before the vessel is closed up or moved to weather conditions below the 50°F minimum curing requirements (time and temperature). This may require force curing.
C. Force curing at elevated temperatures does increase to certain exposures;
therefore, when exposure is severe, force curing is recommended to obtain maximum resistance.
D. An air-dry time of 12 hours at 70 to 100°F shall be allowed before force curing. After air dry period, substrate temperature should be raised approximately 30°F in increments of 30 minutes until the desired temperature is reached. Curing time begins when the specific substrate temperature is reached.
ITB 20242064 Digester and Sludge Holding Tank Coating 5
SUBSTRATE
TEMP
CURING
TIME
SUBSTRATE
TEMP
CURING
TIME
130° 140° 150° 160°
12 Hours 9 Hours 7 Hours 5-6 Hours
170° 180° 190° 200°
4 Hours 3 Hours 2 Hours 2 Hours
5.08 INSPECTION
A. Determine degree of blast obtained using NACE or SSPC standards.
B. Depth of profile shall be determined by visual comparison to Clemtex anchor pattern standards or by using Press-O-Film replica tape.
C. Total dry film thickness shall be determined using non-destructive dry film thickness gauges, which have been properly calibrated. SSPC Volume 1, Chapter 6, shall be used as a guide for the number of readings required per square foot.
D. After a minimum of 12-24 hours of cure at 70 to 90°F, the coating film can be tested for discontinuities with a high voltage holiday detector. All discontinuities should be repaired.
5.09 REPAIR
A. Areas, which contain visual rust, should be abrasive blasted feathering onto adjoining sound coating.
B. Intercoat preparation of areas of low mils shall be completed in the following manner. If the coating has cured less the 24 hours.
1. Soap and water wash the exposed surface to be recoated.
2. Rinse the surface and allow to dry.
3. Apply Plasite 4550-S to achieve the specified thickness as specified.
C. Intercoat preparation of areas of low mils shall be completed in the following manner. If the coating has cured more than 24 hours.
1. Soap and water wash the exposed surface to be recoated.
2. Rinse the surface and allow to dry.
3. Lightly abrade the surface to achieve an anchor profile.
4. Apply Plasite 4550-S to achieve the specified thickness as specified.
D. Apply coating with brush, roller or spray gun depending on the size of the area to be patched. The final coat should be applied as one coat application.
The size of the area to be repaired may dictate the method of application.
ITB 20242064 Digester and Sludge Holding Tank Coating 6
5.10 SAFETY AND ENVIRONMENTAL
A. When handling this product, refer to the Plasite 4550-S technical bulletin.
Proper care is always demanded by good practices, and/or OSHA, Local, and State safety codes, etc. and must be followed closely.
END OF ATTACHMENT B
ITB 20242064 Digester and Sludge Holding Tank Coating 7
| 1 Section 1: general Conditions |
| Part 1 general |
| 1.01 scope |
| A. This specification covers requirements for the furnishing at the Contractor’s price all permits, insurance, materials, labor, supervision, equipment, tools, disposal permit, and associated quality tests necessary to perform the following coating wo... |
| 1. The required cleaning, surface preparation including removal of existing coatings, coating application, testing, and cleanup of a 100% Solids Elastomeric Polyurethane coating system for the interior of the roof of #1 Anaerobic Digester (Digester). |
| 2. The required cleaning, surface preparation including removal of existing areas of failing coatings, coating application, testing and cleanup of repairs made to #1 Sludge Holding Tank (SHT) interior cover. |
| B. The purpose of this project is to: |
| 1. Remove the existing coating and coat the concrete interior roof of the #1 Digester to prevent further deterioration of the concrete. The Digester finished product will be a fully coated interior roof, extending 36 inches down the wall. The projec... |
| 2. Repair failing areas of existing coatings to the interior cover of the #1 SHT. |
| C. Completion Date |
| 1. All work for the Digester and SHT is to be completed 70 days after notice to proceed. |
| 1.02 General |
| A. All pertinent governmental and industry regulation and standards, including, but not limited to those concerning painting, flammable/combustible liquids, eye protection, head protection, skin protection, respiratory protection, scaffolding, lightin... |
| B. The Contractor shall provide and pay for all materials, labor, tools, equipment, water, light, power, transportation, supervision, and temporary construction of any nature, and all other services and facilities of any nature whatsoever, necessary t... |
| 1.03 Definitions |
| A. Where used in the Contract Documents, the following words and terms have the meanings indicated. |
| 1. ACCEPTANCE. Formal notification after the Owner has determined that the Contractor’s Work has been completed in accordance with the Contract and notifying the Contractor in writing of the acceptability of the Work. |
| 2. CONTRACTOR. Individual, partnership, corporation, or a combination thereof, including joint ventures offering a bid to perform the Work. |
| 3. DAY. Calendar day. |
| 4. DEFECTIVE. The word “defective”, when modifying the word “Work”, refers to Work that is unsatisfactory, faulty, or deficient in that it: |
| a. Does not conform to the Contract Documents; or |
| b. Does not meet the requirements of any applicable inspection, reference standard, test, or approval referred to in the Contract Documents; or |
| c. Has been damaged prior to Owner’s recommendation of final payment (unless responsibility for the protection thereof has been assumed by Owner at Final Completion in accordance with the Contract Documents). |
| 5. OWNER. The Owner shall be the person(s) so designated with the authority to make decisions on the Contract and project delivery.. The Owner initially designates Mike McKay of the City of Eugene as the Owner. |
| 6. FINAL ACCEPTANCE. Project status, as designated in writing by the Owner, confirming completion of all Project Work. Determination of Final Acceptance is solely at the discretion of the Owner. The criteria the Owner may use in exercising its di... |
| 7. FURNISH. To deliver to the job site or other specified location any item, equipment, or material. |
| 8. PROVIDE. Provide and install complete in place any item, equipment, or material. |
| 9. PUNCH LIST. List of incomplete items of Work, incomplete administrative requirements and items of Work which are not in conformance with the Contract, prepared by the Owner and issued to the Contractor. |
| 10. SHALL. Means a mandatory obligation or duty of a party. |
| 11. SITE. Lands or areas indicated in the Contract Documents as being furnished by the Owner upon which the Work is to be performed, including rights-of-way and easements for access thereto, and such other lands furnished by Owner which are designat... |
| 12. SPECIFICATIONS. That part of the Contract Documents consisting of written descriptions of the technical feature of materials, equipment, construction systems, standards, and workmanship. |
| 13. SUBCONTRACTOR. A subcontractor is a person or entity who has a direct contract with the Contractor or a sub-tier subcontractor who has a direct contract with a subcontractor to perform any of the Work associated with the Project. |
| 14. SUBMITTAL. The information which is specified for submission to the Owner in accordance with the Specifications. |
| 15. SUPPLIER. A manufacturer, fabricator, supplier, distributor, or vendor having a direct contract with Contractor or with any Subcontractor to furnish materials or equipment to be incorporated in the Work. |
| 16. WORK. All material, labor, tools, supplies and all appliances, machinery, equipment, transportation and appurtenances necessary to perform and complete the Contract, and such additional items not specifically indicated or described that can be r... |
| 1.04 Standard Abbreviations |
| A. The following abbreviations have the meanings indicated unless otherwise specified elsewhere in a particular usage. |
| 1. ANSI American National Standards Institute |
| 2. ASTM American Society of Testing and Materials |
| 3. EPA Environmental Protection Agency |
| 4. SDS Safety Data Sheet |
| 5. NACE National Association of Corrosion Engineers |
| 6. NSF National Sanitation Foundation |
| 7. OSHA Occupation Safety and Health Administration |
| 8. SSPC Society for Protective Coatings |
| 1.05 Safety |
| A. Contractor will be responsible to follow all OSHA confined space requirements. Workers will be up to date on confined space entry training and adhere to all OSHA requirements, including environment monitoring and documentation. Copies of entry pe... |
| B. The Digester and SHT are located in a no smoking, spark, arc welding, grinding, or open flame area of the plant due to exposure to methane gas. |
| C. In case of emergencies at the treatment plant, work may be temporarily halted until safe conditions are restored. The Owner reserves the right to stop all work on this project should a hazard develop. |
| D. Safety Data Sheet (SDS) shall be made available at the jobsite to all workers who may come in contact with the products used. |
| 1.06 Quality |
| A. All workmanship shall be of journeyman quality, performed by skilled and competent craftsmen. |
| B. The Owner reserves the right to have the Contractor remove any worker who, in the opinion of the Owner, refuses to perform or is incapable of performing, satisfactory and acceptable work, or who violates any safety or environmental rule/law or prac... |
| C. Material and equipment must be new and of a quality equal to that specified or accepted. All material and equipment must be the products of manufacturers of established good reputations, and regularly engaged in the fabrication of such equipment. |
| D. The Contractor should use industry standard inspection equipment, quality control and inspection policies in regard to the application of the products. |
| E. It is the responsibility of the Contractor to adhere to industry standard application and inspection procedures for record keeping purposes. |
| F. In the absence of detailed specifications of Work, the Contractor shall perform the Work using materials and equipment of the best grade in quality and workmanship obtainable in the market. |
| 1.07 Change Orders |
| A. The Owner may at any time, by written Change Order (including direction, instruction, interpretation or determination), make any change in the Work within the general scope of the Contract. |
| B. No oral order, statement, or conduct of the Owner constitutes a Change Order or entitles the Contractor to an equitable adjustment. |
| C. If any Change Order causes an increase or decrease in the Contractor’s cost or the time required to perform any part of the Work under this Contract, the Owner shall make an equitable adjustment and modify the Contract in writing. |
| 1.08 Correction of Defective Work |
| A. When, and as often as the Owner determines through its inspection procedures, material, equipment or workmanship incorporated in the Project do not meet the requirements of the Contract, the Owner may give notice of the noncompliance to the Contrac... |
| 1.09 Working Hours |
| A. Working hours for the Contractor will be between the hours of 7:00 AM to 7:00 PM, Monday through Friday. If the Contractor wishes to work an alternative schedule, the request must be submitted in writing and approved by the Owner prior to any chan... |
| 1.10 Storm Water protection |
| A. The Wastewater Division is under a 1200-Z Storm Water permit and monitors storm water runoff. The Contractor will be responsible to ensure that any kind of contaminated runoff does not enter the Wastewater Division storm water system. |
| B. The Owner will routinely monitor this, and any violation will result in immediate shutdown of the project until properly cleaned and a plan is in place to prevent reoccurrence. |
| 1.11 Restroom/Washing Facilities |
| A. Contractor will be responsible for providing restroom and washing facilities for all of their employees. Wastewater Division restroom and washing facilities will not be available to the Contractor. |
| 1.12 Site Conditions |
| A. Tables #1 and #2 list historical temperatures and relative humidity at the Site. |
| Table #1: Past Two Years Ambient Temperature Summary |
| Table #2: Average Weather in Eugene, Oregon |
| Part 2 Products (not used) |
| Part 3 execution (not used) |
| 2 section 2: submittals |
| Part 1 General |
| 2.01 Definitions |
| A. Action Submittal: Written and graphic information submitted by Contractor that requires Owner’s approval. |
| B. Information Submittal: Information submitted by Contractor that does not require Owner’s approval. |
| 2.02 Summary |
| A. When required by Specifications regarding materials, equipment, or methods of Work, or requested by the Owner, the Contractor shall submit descriptive information that will enable the Owner to determine whether the Contractor’s proposed materials, ... |
| B. Required documentation to be submitted within 5 (five) days of bid award. |
| 2.03 Procedures |
| A. Prepare and transmit all submittals in electronic PDF format to Owner as specified herein. |
| B. Present in a clear and thorough manner, and in sufficient detail to show kind, size, arrangement, and function of components, materials, and devices, are in compliance with Contract Documents. |
| C. Deviations |
| 1. Identify and describe each deviation or variation from Contract Documents. |
| D. Resubmittals |
| 1. Clearly identify each correction or change made to original submittal. |
| E. Incomplete Submittals |
| 1. Owner will return entire submittal for Contractor’s revision if preliminary review deems it incomplete. |
| 2.04 Action Submittals |
| A. A copy of the specification, with addendum updates included, with each paragraph check-marked to indicate specification compliance or marked to indicate requested deviations from specification requirements. Check marks (() shall denote full complia... |
| B. Action Submittal Dispositions: Owner will review and respond, as appropriate: |
| 1. Approved: |
| a. Contractor may incorporate product(s) or implement Work covered by submittal. |
| 2. Approved as Noted: |
| a. Contractor may incorporate product(s) or implement Work covered by submittal, in accordance with Owner’s notations. |
| 3. Partial Approval, Resubmit as Noted: |
| a. Make corrections or obtain missing portions, and resubmit. |
| b. Except for portions indicated, Contractor may begin to incorporate product(s) or implement Work covered by submittal, in accordance with Owner’s notations. |
| 4. Revise and Resubmit: |
| a. Contractor may not incorporate product(s) or implement Work covered by submittal. |
| 5. Distribution of Responses |
| a. One electronic copy retained in Owner’s files. |
| b. One electronic copy returned to Contractor appropriately annotated. |
| 2.05 Informational Submittals |
| A. General: |
| 1. Submit electronic copies to the Owner for review. If submittal meets conditions of the Contract, Owner issue acceptance. If the Owner determines submittal does not meet conditions of the Contract and is therefore considered unacceptable, the Owner... |
| B. Certificates: |
| 1. General: |
| a. Provide notarized statement that includes signature of entity responsible for preparing certification. |
| b. Signed by officer or other individual authorized to sign documents on behalf of that entity. |
| 2. Material Test: Prepared by qualified testing agency, on testing agency’s standard form, indicating and interpreting test results of material for compliance with requirements. |
| 3. Certificates of Successful Testing or Inspection: Submit when testing or inspection is required by Laws and Regulations or governing agency or specified in individual specification. |
| 4. Manufacturer’s Certificate of Proper Installation. |
| C. Test and Inspection Reports (in electronic format): |
| 1. General: Shall contain signature of person responsible for test or report. |
| 2. Field: As a minimum, include the following: |
| a. Project title and number. |
| b. Date and time. |
| c. Record of temperature and weather conditions. |
| d. Identification of product and specification. |
| e. Type and location of test, Sample, or inspection, including referenced standard or code. |
| f. Date issued, testing laboratory name, address, and telephone number, and name and signature of laboratory inspector. |
| g. If test or inspection deems material or equipment not in compliance with Contract Documents, identify corrective action necessary to bring into compliance. |
| h. Provide interpretation of test results, when requested by Owner. |
| i. Other items as identified in individual specifications. |
| Part 2 products (not used) |
| Part 3 execution (not used) |
| 3 section 3: coating systems |
| Part 1 General |
| 3.01 Summary |
| A. Any conflicts or inconsistencies found to exist in the specifications shall immediately be brought to the Owner’s attention in writing. |
| B. The Supplier’s latest published instructions for proper use and application of the material shall be obtained, reviewed, and used in conjunction with, and become a part of, this specification. |
| 3.02 Submittals |
| A. Action Submittals |
| 1. Job specific safety plan and procedures. |
| 2. Job specific quality control/assurance plan. |
| 3. Project schedule. |
| 4. Waste disposal plan. |
| a. The Contractor will provide to the Owner prior to disposal a disposal plan of how and where material will be disposed of. |
| B. Information Submittals |
| 1. Contractor shall provide references, with owner’s name and contact information, for 3 projects of similar scope and application, successfully completed and in service for 5 years, with certificates of manufacturer’s approval of each of the two coat... |
| a. A 100% elastomeric polyurethane coating; and |
| b. A 2-part premium novolac epoxy coating. |
| 2. Name of the person(s) who will be in charge and will be present at the job site during the entire project. Include resume(s) with completed projects and training certifications as an approved applicator of the material specific. |
| 3. List of all persons involved with the project, their duties, and their training. |
| 4. Coating manufacturer’s product information |
| a. Submit manufacturer’s latest product technical data sheets, installation instructions, and chemical resistance data for all materials used. |
| 5. Waste disposal records |
| a. Documentation of how and where materials were disposed of will be required and provided to the Owner after each occurrence. |
| 3.03 Pre-Job meeting |
| A. A mandatory pre-job meeting will take place before any equipment or materials can be ordered or moved on site. The purpose of the meeting is a final review of the specifications, answer any questions, and do a final inspection of the work site. T... |
| 3.04 Coating manufacturer’s responsibilities |
| A. Determine before scheduling services, that all conditions necessary to allow the successful testing have been met. |
| B. Coating Manufacturer Representative shall be present for the following: |
| 1. Pre-Job meeting |
| 2. Surface preparation approval |
| 3. Surfacing inspection and approval, if surfacing is used |
| 4. First day of coating application. |
| C. Coating Manufacturer Representative shall provide a report following each site visit. |
| D. Coating Manufacturer Certificate of Proper Installation. |
| 1. Coating Manufacturer Representative shall provide a final acceptance report, and Certificate of Proper Installation. |
| 2. Such form shall certify that the signing party is a duly authorized representative of the coating manufacturer, and is empowered by the manufacturer to inspect and approve work. |
| 3.05 Delivery, Storage, and handling |
| A. The Contractor will be provided with an area to stage and store all equipment and materials for the project. The area to be used will be established at the pre-job meeting. |
| B. The Contractor is solely responsible for securing all equipment and materials for the project in the staging area. |
| C. The Contractor will be responsible for always keeping the area clean and orderly. Area will be inspected daily by the Owner. |
| 3.06 warranty |
| A. Contractor will provide a warranty against workmanship defects for a period of one (1) year from the date of Final Acceptance. |
| B. The Contractor shall make all necessary repairs and replacements to remedy any and all defects or failures of the Work occurring within the warranty period. |
| C. If the Contractor performs warranty Work, then the warranty Work shall have a one (1) year warranty period from the date of its completion and Acceptance by Owner. |
| D. The Owner shall provide the Contractor with written notice of the need to perform warranty Work unless it is determined that an emergency exists, that delay would cause serious additional loss or damage, or if any delay in performing the Work might... |
| Part 2 products |
| 3.07 Materials specified by name |
| A. These specifications are based around the Carboline Company, manufacturer of REACTAMINE 760, CARBOGUARD 510 RESURFACER, HYDROPLATE 1080 Epoxy Primer, and PLASITE 4550-S. Bids shall be submitted around the listed products. |
| B. If any material or equipment is specified by only one proprietary name, or by the name of only one manufacturer, it is for the purpose of standardization, or because the Owner knows of no equal. |
| C. Substitutions |
| 1. The Contractor may offer material or equipment of equal or better quality and performance in substitution for those specified, which the Contractor considers would be in the Owner’s interest to accept. The Owner will consider offers for substituti... |
| 2. Contractor shall make offers of substitution in writing to the Owner and shall include sufficient data to enable the Owner to assess the acceptability of the material or equipment for the particular application and requirements. |
| 3. Approval of any substitution must be made in writing prior to procurement or proceeding with work. |
| 4. Any cost differential associated with a substitution must be reflected in the Contract price and the Contract Documentation must be appropriately modified by a Change Order. |
| 3.08 Attachment a |
| A. See Attachment A for complete specifications for the 100% elastomeric polyurethane coating system to be used on the Digester. |
| 3.09 attachment B |
| A. See Attachment B for complete specifications for the 2-part premium novolac epoxy coating system to be use on the SHT. |
| Part 3 execution |
| 3.10 owner inspection |
| A. To demonstrate its compliance with the Contract requirements, the Contractor shall assist the Owner in its inspection of the Work. |
| 3.11 Proection o f surrounding areas |
| A. The Contractor shall ensure that all surrounding buildings, structures, equipment, and vehicles are protected from spray drift. All dust must be contained to protect all adjacent blower and engine systems and to meet all Local, State, and Federal ... |
| 3.12 Debris removal/disposal |
| A. The Contractor shall be responsible for the removal and proper disposal of all materials from the work site. Disposal must comply with all Local, State, and Federal regulations. The material resulting from removal of existing coating must be eval... |
| 3.13 product specific instructions |
| A. See Attachment A for product specific execution instructions on the 100% elastomeric polyurethane coating system to be used on the Digester. |
| B. See Attachment B for product specific execution instructions on the 2-part premium novolac epoxy coating system to be used on the SHT. |
| 4 attachment a: 100% elastomeric polyurethane coating (digester #1) |
| 4.01 eLASTOMERIC LINING SYSTEM FOR CONCRETE |
| A. The purpose of these specifications is to provide general guidelines regarding installation of a spray applied elastomeric polyurethane lining system for concrete surfaces. Unless indicated otherwise, application to any other substrate is not inte... |
| B. Vertical & Horizontal applications |
| 4.02 surface preparation |
| A. Inspection shall verify that surfaces are prepared per coating manufacturer’s recommendations before proceeding with application of coating material. |
| B. Protection of Surfaces Not To Be Coated. |
| 1. During surface preparation and coatings application, all nearby equipment, vehicles, structures, etc. shall be protected from blasting grit, dust and over spray, dropped or spilled materials. |
| 2. Surfaces adjacent to a proposed leading edge of coating application shall be taped-off or otherwise protected. |
| C. Rigging and Scaffolding |
| 1. Rigging and/or scaffolding, if required, shall be set up to permit ease of operation of surface preparation and application equipment and shall provide safe and clear access to all surfaces to be coated. |
| D. Decontamination |
| 1. Before abrasive cleaning, all oil, grease, dirt, loose matter and other contaminants shall be removed by high pressure water blasting, steam cleaning, or any other acceptable method, to satisfy ASTM D-4258 “Surface Cleaning Concrete for Coating”. |
| 2. Environmentally acceptable biodegradable detergents may be used; however, they shall be completely rinsed off with plenty of fresh, clean water. |
| E. Abrasive Cleaning |
| 1. Concrete shall be abrasive blast cleaned to satisfy ASTM D4259 “Abrading Concrete”, producing a surface with a roughened texture resembling coarse sandpaper. Concrete shall be free of crusts, soft or weak matter, loose aggregate, and all other con... |
| 2. Sharp edges shall be rounded or trimmed by chipping, wire brushing, or any other acceptable method. |
| 3. At expansion joints, if any, filler compound shall be roughly flush with, or lower than, concrete surface. |
| 4. Wet abrasive blasting shall be allowed provided that water produced does not hinder application of materials. Water blasting alone shall not be allowed, except for decontamination. |
| 5. Acid etching shall not be acceptable. |
| F. Removal of Existing Coatings |
| 1. If present, existing coatings shall be removed by abrasive cleaning or any other acceptable method. |
| 2. Only small sections of existing coatings that are very firmly adhered and greatly resist removal may remain, however, these sections shall be thoroughly abraded to provide a roughened surface. |
| G. Substrate Moisture |
| 1. If present, all leaks and infiltrations shall be repaired and eliminated as directed by Owner. Concrete surfaces shall be completely dry prior to coating application. |
| 2. If the concrete surfaces are not completely dry, HYDROPLATE 1080 Primer must be used. Concrete may be damp to the touch, but shall be free of condensation and visible moisture, prior to application of HYDROPLATE 1080 moisture-tolerant epoxy primer. |
| H. Final Coating |
| 1. All surfaces to be coated shall be free of dust, moisture, and condensation. |
| 2. Nearby surfaces shall be cleaned to prevent wind-blown contamination of substrate or freshly applied coatings. |
| 4.03 Resurfacing |
| A. Materials and Applications |
| 1. Depending on coating manufacturer’s specific surface preparation requirements for repair or resurfacing of concrete, Contractor may select and use any or all of the products described below, or pre-approved equals. |
| 2. Resurfacing products shall be mixed, applied, allowed to cure, and treated per their manufacturer’s recommendations, before they are coated. |
| 3. CARBOGUARD 510, as manufactured by Carboline Company of St. Louis, MO, is a water-based epoxy binder for Portland Cement and sand, applied up to 6” (15 cm) thick as a topping over deteriorated or damaged concrete. |
| 4. It is recommended to use Hydroplate 1080 Epoxy Primer over the Carboguard 510. |
| 4.04 HYDROPLATE 1080 Epoxy Primer |
| A. Material |
| 1. Hydroplate 1080, as manufactured by Carboline Company of St. Louis, MO, is a phenalkamine epoxy primer used as a primer to concrete surfaces. It is a two component system with 80% solids by volume. |
| B. Handling and Mixing |
| 1. Part A and B components shall be delivered to jobsite in their original unopened containers with labels intact. Containers shall be stored indoors, off the floor, in cool and dry conditions, and shall be protected against excessive moisture, heat ... |
| 2. Components shall be thoroughly agitated in their original separate containers for 5 minutes to produce complete suspension, then measured to obtain an exact 1A:4B volume ratio, and poured into a dry, clean separate container. |
| 3. Components shall be blended together by agitating for an additional 5 minutes, keeping mixing blade submerged to minimize whipping of air into material, until a uniform mix is achieved. Sides and bottom of container shall be scraped occasionally t... |
| C. Primer Application |
| 1. Hydroplate 1080 shall be maintained between 50 (F and 90 (F (10 (C to 32 (C). |
| 2. Ambient temperatures shall be above 20 (F (-7 (C). |
| 3. Substrate temperatures shall be above 20 (F (-7 (C), and at least 5 (F (3 (C) above dew point and rising. Relative humidity shall not exceed 85%. Suspend application if conditions are not within recommended parameters when snowing, raining, or fo... |
| 4. Hydroplate 1080 can be recoated in about 2 hours at 75 (F. Maximum recoat interval shall not exceed 24 hours at 75 (F. |
| 5. Primer shall be applied at specified film thickness in a single application, using conventional airless spray equipment. Application by brush or roller shall be permitted if spray-application is not practical. |
| 6. Mixed primer that exceeds its pot-life shall not be used and shall be properly discarded. |
| 7. Applied primer shall be protected from contamination by dust, moisture, condensation, etc. |
| D. Recoat Time |
| 1. Primer shall be top coated with REACTAMINE 760HB after Hydroplate 1080 is set and cured for 2 hours at 75 (F, but within the 24-hour maximum re-coat window at 75 (F. |
| 4.05 reactamine 760hb coating |
| A. Material |
| 1. REACTAMINE 760HB, manufacturer and supplied by Carboline Company of St. Louis, MO, is an ASTM D-16 Type V, chemical cure, 100% solids, elastomertic, aromatic polyurethane with no sand fillers or extenders added. It shall be classified in accordance... |
| 2. The coating shall be a two-component system in a 2 parts resin (Part A) to 1 part catalyst (Part B) volume ration (2A:1B), capable of being spray-applied at specified film thickness in a single application. It shall produce a monolithic, flexible ... |
| B. Handling and Mixing |
| 1. Part A and B components shall be delivered to job site in their original unopened steel drums with labels intact. Drums shall be stored indoors, off the floor, in cool and dry conditions, protected against excessive moisture, heat, or cold, in acc... |
| 2. Part A shall be thoroughly mixed with a drum mounted air-driven agitator for 30 minutes immediately before each use. |
| 3. Agitation of Part B is not be required, unless color tint is used, in which case tint shall be added directly to the drum while agitating, then used immediately. For potable water applications, color tint shall not be added. |
| C. Application |
| 1. Coating shall be spray applied by qualified technicians, using plural-component, high-pressure, airless spray equipment, approved by the Supplier, that automatically proportions the Part A and B components, blends them via in-line static mixers, an... |
| 2. Coating materials shall be maintained between 80( and 90 (F (27( to 32 (C). Ambient temperatures shall be between 40 ( and 120 (F (4( to 49 (C), and substrate temperatures shall be between 40( and 140 (F (4( to 60 (C) and at least 5 (F (3 (C) abov... |
| 3. Relative humidity shall not exceed 95%. |
| 4. Suspend application if conditions are not within above parameters, when snowing, raining or foggy, or when precipitation is imminent. |
| 5. Each coat shall be applied at specified film thickness in a single application, which may consist of several increments, accomplished by one or more passes of the spray gun, all applied within recommended recent times to a specific area. High prof... |
| 6. To minimize the creation of pinholes due to outgassing of air from porous concrete surfaces, coating shall be applied during a cooling trend in the concrete’s surface temperature, in multiple increments of 20 to 30 mils (0.5 to 0.75 mm) per spray p... |
| D. Installation of a Bonded Geomembrane (Optional) |
| 1. This option may be utilized on suitable vertical and horizontal surfaces, when a reinforced system is desired, or as an alternative to resurfacing before installing the Reactamine 760HB system. |
| 2. Fabric Material |
| a. Non-woven, 100% polypropylene fabric, needle punched, and “heat-set” on one side, as manufactured by Carthage Mills of Cincinnati, OH, or pre-approved equal. |
| b. Fabric shall weigh 8 to 10 oz./yd.² (250 to 313 g/m²), or as appropriate for the intended use. |
| 3. Embedding the Fabric |
| a. Pre-cut fabric panels shall be firmly pressed and embedded, ”heat-set” side facing out, into the REACTAMINE 760HB basecoat while it remains in a semi-liquid state. |
| b. Fabric shall be evenly pressed with a non-stick roller, squeegee or trowel to ensure that it is adhered flat against the basecoat in all locations. DO NOT SATURATE THE FABRIC. |
| c. Over irregular surfaces, fabric shall be pressed by hand (use suitable protective gloves) to maximize contact with basecoat. |
| d. Adjoining panels shall be overlapped by 2 inches (5 cm) and bonded together with REACTAMINE 760HB, spray-applied between the overlapping fabric |
| 4. Anchoring the Fabric |
| a. Embedded fabric panels may, when conditions require, be mechanically fastened to the concrete substrate using ¼” diameter x 2” long suitable stainless steel anchor bolts with 1½“diameter washers, installed at 36” centers, or as appropriate for inte... |
| 5. Coating the Fabric |
| a. REACTAMINE 760HB topcoat shall be spray-applied directly to the exposed “heat-set” side of the embedded fabric to produce complete coverage in all locations. |
| b. Exposed fabric fibers or edges, or any other discontinuities shall not be acceptable. |
| c. If necessary, applied film thickness shall be increased, as needed (beyond specified thickness), to produce complete coverage and sealing of the geotextile fabric. |
| E. Recoating / Transitions |
| 1. Fresh coating may be sprayed over previously applied coating as long as undercoat remains wet or tacky to the touch or has not exceeded 4 hours at 70 F (21 C) since application. Higher temperatures shorten the recoat window, and colder temperatures... |
| 2. If recoat time is exceeded, undercoat shall be brush blasted to remove gloss, then vacuumed or solvent-wiped to dust-free condition, allowing all solvent to dry, before application of fresh coating. |
| 3. For transitions between coating sections applied on different days, a minimum 12 inches (30 cm) of the undercoat shall be brush blasted and prepared as described above, and fresh coating shall be feathered in at least 6 inches (15 cm). Avoid applic... |
| F. Service |
| 1. The coating or lining system may be placed in service upon satisfactory inspection by Contractors Quality Assurance and third-party coating inspector. |
| 2. Minimum cure time for immersion is 1 hour at 85 F (29 C), 2 hours at 73 F (22 C), or 4 hours at 60 F (16 C. |
| 4.06 Treatment of Leading Edges |
| A. Placement of Saw-Cuts |
| 1. During surface preparation, a saw-cut shall be made along each proposed leading edge of coating application. |
| 2. Saw-cuts shall be ½ to 1-in. deep (1.25 to 2.5 cm) x 1/8 to ¼-in. wide (0.3 to 0.6 cm). Sharp edges shall be rounded or trimmed, and saw-cut cavity shall be vacuumed to a dry, dust-free condition. |
| 3. Adjacent surfaces not to be coated shall be protected from overspray by taping-off in a neat manner. |
| B. Application |
| 1. A liberal amount of coating material shall be spray-applied to saw-cut area, then pressed with trowel or putty knife into the saw-cut cavity and smoothed level, mechanically anchoring the leading edge to the substrate. After coating sets up, it sha... |
| 4.07 Treatment of protrusions |
| A. Surface Preparation |
| 1. Surfaces shall be prepared to satisfy coating manufacturer’s recommendations for applicable substrate. Surface preparation shall extend beyond proposed leading edge of coating application. Surfaces shall be dry and dust free. before coating. Adjace... |
| B. Application |
| 1. Protrusion surfaces shall be coated concurrently with adjacent concrete surfaces, to satisfy manufacturers recommendations for applicable substrate. After coating sets up, it shall be razor-cut to remove protective tape, leaving a straight, neat le... |
| 4.08 Treatment of Expansion Joints |
| A. Where the Geotextile System is used on 100% of the surface, no special treatment of the expansion joints is required. |
| 4.09 Inspection |
| A. The Contractor shall enlist the aid of various tests and perform those tests to verify the integrity of the applied lining to their, and the Owner’s satisfaction. The Owner shall be permitted full access at all times to observe and be satisfied th... |
| 1. Completion of surface preparation |
| 2. During primer/filler application |
| 3. Prior to REACTAMINE 760HB |
| 4. During wet and dry film testing |
| 5. During pinhole detection testing |
| 6. During any repairs of the coating system |
| B. Surface Preparation |
| 1. Contractor shall verify that surfaces are prepared per coating manufacturer’s recommendations. Inspection will be performed by Contractor’s Quality Assurance and a qualified third-party coating inspector. |
| C. Ambient Conditions |
| 1. Ambient conditions shall be monitored and maintained within recommended parameters. Dew points shall be monitored per ASTM E-337 “Measuring Humidity with Psychrometer”, to determine wet and dry-bulb temperatures. Thermometers shall be used to measu... |
| D. Primer Application |
| 1. Inspection shall verify that primer is mixed at proper volume ratio and applied with no evidence of streaks or uneven coloring. Film thickness shall be verified by logging volumes of material applied to pre-measured areas. |
| 2. Inspection shall verify that applied primer is protected from contamination, and top coated with REACTAMINE 760HB within recommended recoat time. |
| E. Coating Application |
| 1. Inspection shall verify that coating is applied using spray-equipment approved by coatings manufacturer monitoring its operation to verify that materials are applied with no evidence of streaks or uneven coloring. |
| 2. Film thickness shall be verified by logging volumes of material applied to pre-measured areas, using a machine mounted, mechanical “stroke-counter” that records number of pump strokes applied. |
| 3. Inspection shall verify that any recoating is accomplished within recommended recoat times. Inspection shall verify that no fresh material is applied to glossy or improperly prepared surfaces, and that any material so applied is completely removed.... |
| F. Holiday Detection |
| 1. The coating shall be inspected per ASTM D-4787 “Continuity Verification of Liquid or Sheet Linings Applied to Concrete Substrates” or “NACE RP 0188”, using high-voltage spark testing equipment with variable settings. Test voltage shall be set at an... |
| 2. For bonded geomembranes, test voltage shall be set at an initial 100 volts per mil (4,000 volts per mm) of total system thickness – including the geotextile fabric. |
| G. Requited Contractor Testing Equipment |
| 1. The following inspection equipment, or pre-approved equal, shall be utilized by the Contractor for performing quality control testing: |
| a. Sling psychrometer |
| b. Psychrometric charts for determining relative humidity and dew point |
| c. Surface temperature thermometer |
| d. Ambient temperature thermometer |
| e. High range wet and dry film thickness gauges |
| f. Micrometer |
| g. Durometer |
| h. Sample cans |
| i. Inspection glass (30 power minimum) |
| j. High voltage pinhole detector |
| 4.10 patching and repairs |
| A. Surface Preparation |
| 1. Repair area shall be decontaminated, and deficient sections shall be removed until properly applied, firmly adhered coating materials are reached. Exposed surfaces shall be treated to satisfy applicable requirements. Coating material surrounding re... |
| B. Material and Application |
| 1. A maximum 12 fl. oz. (350 ml) of REACTAMINE 760HB coating material shall be hand-mixed in a 2A:1B volume ratio, then quickly and evenly applied by brush or putty knife, covering the repair area. Repair material shall not extend beyond surrounding a... |
| 4.11 controlled environment |
| A. Dehumidification |
| 1. To prevent delays or unsatisfactory results in coatings application due to excessive ambient moisture or condensation, Applicator shall be equipped and prepared to provide a suitable dehumidification system, to produce an environment conducive to a... |
| 2. Heating alone shall not substitute for dehumidification. |
| B. Heating |
| 1. To prevent delays or unsatisfactory results in application or cure of the coatings due to excessive cold, Contractor shall be equipped and prepared to provide a suitable explosion-proof heating system, to elevate substrate temperatures within recom... |
| 5 attachment b: 2-part premium novolac epoxy coating system (sht #1) |
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