Okaloosa County BOCC — March 4, 2014 — Repair & Paint Countryview & Bluewater Tanks — reading text

009870 - 19 Countryview & Bluewater Tanks (2014) Job No. 41-459  including thinner. The combined material shall be thoroughly mixed with a power agitator that shall be driven by a 3/4" drill motor not exceeding 300 rpm and which do not cause air entrainment to achieve a uniform consistency. d. Adherence to proper induction times and re-coat schedule for the combined coating material shall be in accordance with the manufacturer's published product data. No coating shall be applied until the minimum induction time has been reached. 6. Coatings Application a. Methods of application are at the discretion of the CONTRACTOR as long as the materials are applied in accordance with the manufacturer's published data and the end results are in compliance with these specifications (including all others inferred by reference). b. Brushes shall be: Purdy Corporation, Professional Quality, Black China Bristle Series, or Wooster Brush Company Pro 10, Professional Quality, Black China, sash and trim brushes, or approved equal. c. Rollers shall be Purdy Corporation, Professional Quality, Lambskin rollers with phenolic core, or Wooster Brush Company, Professional Quality, Resin/Coat Rollers, or Premier Lint Free, Epoxy Bonded to Phenolic Core, Premier Richmond Hill, NY, or approved equal. d. Techniques shall be used which will not allow coating droplets to travel from the base of the tank or escape from the containment apparatus. e. Prior to the cleaning or coating of any surface, the CONTRACTOR shall present a written plan for approval by the PROJECT REPRESENTATIVE and the ENGINEER concerning how abrasive and/or paint damage to automobiles and property will be handled, including a process for quick removal of the abrasive or paint, and who will do the Work. This approval in no way shall relieve the CONTRACTOR from the responsibility of settling claims for damage, but is intended as an avenue to expedite and minimize said claims. 7. Coating Thickness a. Dry film thicknesses (DFT) specified in the attached painting schedule (see Appendix, Table 1), are dry mil thicknesses measured in accordance with Steel Structures Painting Council SSPC-PA-2, Paint Application Specification No. 2, “Measurement of Dry Paint Thickness with Magnetic Gauges.” Painting Contractor shall apply additional coats as necessary to achieve the specified minimum dry film thickness range per coat. b. The thickness of each type paint is essential to the system's integrity (see Appendix, Table 1). The addition of mils in a succeeding coat of a different generic type or formulation to make up for thin preceding coat(s) shall not be allowed. If a thicker finish coat is needed to hide the underlying darker color on the exterior of the tank, a thicker coat may be applied, but it shall not exceed the Repair & Paint 009870 - 20 Countryview & Bluewater Tanks (2014) Job No. 41-459  maximum allowable thickness recommended by the coating manufacturer. c. Under no circumstances shall the dry film thickness of an individual coat or of the total coating system exceed the coating manufacturer's maximum allowable thickness limit. f. Dry mil thickness greater than the coating manufacturer's maximum allowable thickness shall be considered unacceptable and shall be removed by the CONTRACTOR at no additional cost to the OWNER at the direction of the ENGINEER and OWNER. g. Some coatings may require additional coats applied to achieve the specified thickness when applied by brush or roller. No additional compensation shall be made for additional coats required to achieve the specified minimum thickness. 8. Surface Conditions a. The surfaces to be painted shall be free from mud, oil, grease, dust, moisture, salts, and other foreign material which would cause adhesion or other problems in the finished product. b. If field tests by the ENGINEER find questionable amounts of contamination on the steel surfaces or painted surfaces to be top-coated, a representative of the paint manufacturer may be called to examine the surfaces in question and determine if the surfaces are in accordance with these Detailed Technical Specifications and the manufacturer's published product data. 9. Painting Schedule a. The tank should be entirely cleaned and primed prior to the start of the intermediate painting to avoid damage to the topcoats from adjacent cleaning operations. b. The primer shall not be applied closer than 6" to the edge of a surface yet to be cleaned. c. If the re-coat cycle of the primer prevents completing cleaning and priming of the tank before applying the intermediate coat, then the CONTRACTOR shall submit, in writing, a schedule for coating application which will avoid damage to the intermediate and finish coats when applied close to uncleaned surfaces. 10. Piping a. The CONTRACTOR shall be responsible for assuring that no foreign material including, but not limited to paint, abrasive, rags, or tools enter the inlet/outlet, drain, or overflow piping during the prosecution of the Work. b. Any material found in this piping at the time the tank is placed back into service shall be removed at the expense of the CONTRACTOR. To aid in preventing the entrance of foreign material, the CONTRACTOR shall drain the pipe and either lower the protective cover to the top of the pipe, tack weld a plate over the inlet/outlet pipe or place an expandable plug in the pipe. Repair & Paint 009870 - 21 Countryview & Bluewater Tanks (2014) Job No. 41-459  c. If a plate is tack welded over the pipe, the plate shall completely cover the pipe and shall not be removed until the interior and exterior painting is complete. After the plate is removed the damaged areas of coating and weld burrs shall be ground smooth and recoated in accordance with the applicable paragraphs in these specifications. d. If an expandable plug is inserted in the pipe, the plug shall be placed approximately 18" down in the pipe to allow for proper coating of the inlet/outlet pipe. 11. Air Dryer for Compressor a. Use air dryers sufficient to remove 98% of the moisture from the compressed air. Size the dryers based on total cfm using manufacturer supplied charts. Upon request, supply charts to engineer for verification. b. If the fan is not operable, cease all blasting until the dryer is replaced or repaired. c. Supply air dryer with an air draw-off valve to check air for dryness, oil contamination and cleanliness on the outlet side of the air dryer. d. For cleaning operations, draw clean air from the outlet side of the air dryer. C. Preparation and Painting the Tank Wet Interior 1. Surfaces to be Cleaned and Painted: All interior wet surfaces including the roof, manholes, roof vent flange access tube, etc., shall be cleaned and painted in accordance with the requirements of this section. 2. Cleaning Tank and Debris Removal a. The OWNER will remove all water from the tank which will drain by gravity through the drain line. b. The CONTRACTOR shall remove all standing water, mud, and debris from the tank prior to starting work 3. Surface Preparation a. The interior surfaces mentioned above in Paragraph 3.05.B.1. shall be cleaned to a degree of cleanliness equivalent to SSPC-SP10, Near-White Blast Cleaning by a method approved by the ENGINEER and OWNER. b. Before the formation of rust and after observation of the surface by the ENGINEER, all cleaned surfaces shall be primed as specified. Prior to the application of the finish coat, all seams, rough areas, deviations from smooth surfaces, pits, bolt heads and nuts, remains of erection lugs and scars, and corners shall be primed by brush (stripe coat at 2.0 - 4.0 mils) with the primer, Repair & Paint 009870 - 22 Countryview & Bluewater Tanks (2014) Job No. 41-459  followed by the finish coat. c. A sample area of minimum size 2’x 2’ will be cleaned to a degree of cleanliness equivalent to SSPC-SP10, Near White 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. Seam Sealer a. After cleaning, seam sealer is to be applied to the roof vent intersection, roof manhole, tank manhole intersection, piping intersections, and the lap seams to seal these intersections from moisture. It shall be applied in a workmanlike manner, being beveled at approximately 45 degrees. b. The cost of this seam sealing is to be included in the Base Bid. c. At the CONTRACTOR'S option Filler (see section 2.05, above) and Surfacer may be applied after the priming of the surface, providing no rust has formed on any un-coated surfaces (such as crevices between plates). 5. Coating Application a. The approved coatings for the interior surfaces are intended to comply with the requirements of AWWA D102-11 Inside Coating System No. 3 (ICS-3, Modified) with the dry film thickness as specified in the coating schedule. Acceptable manufacturers and products are shown in the coating schedule. The CONTRACTOR must submit certifications indicating compliance with