Okaloosa County BOCC — March 4, 2014 — reading text

holiday test regardless of the mil thickness applied to the tank. D. Preparation and Painting the Tank Exterior 1. Surfaces to be Painted All exterior surfaces of the tank, including the bowl, tower, rods, turnbuckle threads, bolts, nuts, pins, brackets, seams, corners, base, pedestals/pillars or legs, manhole neck of the roof vent, etc., shall be cleaned and painted in accordance with the paragraphs in this section. 2. Irregular Surfaces a. Any burns, weld splatter, rough welds, weld overlap, bolts, sharp edges, or corners of any areas disturbed or installed by the CONTRACTOR'S operations which would cause difficulty in achieving a defect-free coating shall be chipped and/or ground smooth. b. Any pinholes or voids in exterior welds shall be filled with an epoxy seam sealer. It is not the intent to have these irregular surfaces chipped and/or ground flush. The objective of the chipping, grinding and/or seam sealing is to eliminate irregular surfaces to provide a surface that is sufficiently smooth for the application of a uniform thickness coating without voids. This chipping, grinding and/or seam sealing is considered incidental to the exterior painting and is to be included in the Base Bid. 3. Cleaning Tank and Debris Removal a. The surfaces described in paragraph 3.05.D.1 shall be cleaned to a degree of cleanliness equivalent to SSPC-SP6, Commercial Blast Cleaning by a method approved by the ENGINEER and OWNER. b. A sample area of minimum size 2’x 2’ will be cleaned to a degree of cleanliness equivalent to SSPC-SP 6, Commercial Blast Cleaning as agreed by the ENGINEER and CONTRACTOR. After agreement as to degree of cleanliness, the sample area shall be clear coated and used as a template for the remainder of the cleaning for this portion of the tank. 4. Coating Application a. The approved coatings for the exterior surfaces are intended to comply with the requirements of AWWA D102-11 Outside Coating System No. 4 (OCS-4, Modified). Acceptable manufacturers and products are shown in the coating schedule. The CONTRACTOR must submit certifications indicating compliance with the specifications. Repair & Paint 009870 - 25 Countryview & Bluewater Tanks (2014) Job No. 41-459 Packet Pg. 278  b. Not later than eight hours and before the formation of rust, the cleaned surfaces (SSPC-SP6) shall be primed with the specified primer. c. Should any area exist where the intersection of two (2) members does not allow the complete cleaning of the intersection and the members cannot be separated for cleaning (such as anchor bolt washers, clevises, turnbuckles, etc.), these intersections shall be post-primed with an aluminum platelet pigmented material suitable for marginally cleaned surfaces. The material shall be Tnemec 1 Omnithane, or other material approved in writing by the ENGINEER and recommended by the manufacturer of the exterior paint system. d. Following the prime coat application, the exterior surfaces shall receive two intermediate coats and a finish coat of paint. The colors for the intermediate coats shall be slightly darker than that chosen for the finish coat, being dark enough and different enough from one another to visually assure application and coverage of each subsequent coat, yet light enough to allow proper hiding of the intermediate coats of paint. 5. Recoat Cycle a. The CONTRACTOR shall review the manufacturer's published product data for maximum recoat times for the interior coating system selected for use. b. If the maximum recoat window is exceeded prior to application of the succeeding coat, then the CONTRACTOR shall prepare the interior surfaces in accordance with the manufacturer's published product data prior to the application of the next coat. c. The cost of this additional surface preparation shall be borne by the CONTRACTOR with no additional cost to the OWNER. d. The Contract Time shall not be increased as a result of this additional surface preparation. 6. Curing a. Each coat shall be properly cured before the application of any subsequent coats. b. The interior wet area coating shall be completely cured and the tank shall not be filled with water until approved by the ENGINEER and OWNER. c. The exterior dry coating on the opposite side of water bearing surfaces shall be completely cured and the tank shall not be filled with water until approved by the ENGINEER and OWNER. d. Solvent rub tests, pencil hardness tests, or other industry recognized testing procedures shall be used as recommended by the manufacturer. e. The CONTRACTOR shall monitor the torus bottom plate temperature during the interior coating curing to verify that minimum steel temperature requirements are satisfied. Repair & Paint 009870 - 26 Countryview & Bluewater Tanks (2014) Job No. 41-459 Packet Pg. 279  E. Logos 1. Countryview Tank - The Tank CONTRACTOR shall paint the Okaloosa County logo on the broadside of the tank. The logo shall be painted using colors to match the logo (See Appendix for representative detail). Final color selections are on file at Tnemec. Orientation of the Logo on the tank to be determined by the OWNER. Diameter of the logo shall be minimum of 20'. 2. Bluewater Tank - The Tank CONTRACTOR shall replace the existing “sailboat” logo to match as is. Artwork for the logo is not available. Tank logo paint shall be same as final top coat required by the exterior coating system F. Safety Climbing Devices 1. The tubular notched galvanized rigid rail safety-climbing devices shall be removed prior to the cleaning and painting of the ladders. 2. All paint on the device, both existing paint and any paint spilled on the device by the CONTRACTOR, shall be removed by wiping the device with the proper solvent. 3. Any rust which has developed on the safety rails shall be removed by power tool cleaning with Scotch-Brite abrasive discs, then these areas shall be coated with one coat (2.0 to 3.0 mils thick) of an aluminum platelet pigmented single component Polyurethane mastic such as Tnemec 530 Omnithane. 4. Any necessary temporary protective devices for compliance with Federal OSHA requirements, all state and local safety regulations, and safe working practices shall be furnished and maintained by the CONTRACTOR. 5. After the curing of the ladder paint, the tubular notched galvanized rigid rail safe- climbing device shall be reinstalled in a secure manner as recommended by the manufacturer of the climbing device. 6. Any fasteners damaged by the removal and replacement of the device shall be replaced by the CONTRACTOR at no cost to the owner. 3.7 INSPECTION AND TESTING A. Testing Coatings 1. If a dispute arises concerning the quality or quantity of the applied coatings; adhesion tests, Tooke gage inspection, or some other form of destructive testing may be employed. Repair & Paint 009870 - 27 Countryview & Bluewater Tanks (2014) Job No. 41-459 Packet Pg. 280  2. If such tests are employed, the OWNER will pay for these tests and the CONTRACTOR shall repair the damaged coating at no additional costs to the OWNER regardless of the outcome of the tests. B. Observation 1. All Work shall be accessible to the ENGINEER using the CONTRACTOR'S rigging and equipment. If assistance is required for the ENGINEER to safely inspect the work, the CONTRACTOR shall assist the ENGINEER. The cost of labor and equipment to assist the ENGINEER shall be included in the Base Bid contract amount. C. Hold Points for Required Inspections The CONTRACTOR shall give the ENGINEER at least 24 hours notice (48 hours if inspection required on weekend) before each of the following stages in the Work is completed: 1. any repairs and prior to preparation 2. interior blast (frequency to be determined) 3. installation of prime coat 4. installation of stripe coat 5. exterior blast 6. exterior prime coat 7. exterior stripe coat 8. exterior 1st intermediate 9. exterior 2nd intermediate Failure to notify ENGINEER as specified may result in removal of any installed coating or re-work of surface preparation that has occurred since last hold point. Removal or re-work shall be at the sole discretion of the OWNER and ENGINEER and shall be at no additional cost to OWNER. 3.8 DISINFECTION OF THE TANK AND PIPING A. Cleaning 1. After curing and prior to disinfecting, the CONTRACTOR shall wash the tank interior with potable water to remove all loose paint overspray, dirt, etc. 2. All equipment, including brooms, brushes, spray equipment, and worker's boots, shall be disinfected before they are used to clean the water storage facility. 3. The CONTRACTOR shall supply an adequate volume of water (20 gpm Repair & Paint 009870 - 28 Countryview & Bluewater Tanks (2014) Job No. 41-459 Packet Pg. 281  minimum) with sufficient pressure (60 psi minimum at the nozzle) to wash