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

enclosure, the tarps shall be an impervious, solid, flame- resistant material, reinforced with a fiber mesh and shall allow as much light as possible to pass through the material. L. The existing paint being removed from the tank may contain lead and chromium. The CONTRACTOR shall bear all responsibility to assure that workers take proper safety precautions when working in a lead and chromium abatement environment. M. Dust Collectors - Air Filtration Units: 1. Furnish and use a dust collector(s) during all blasting work. 2. Units to be equal in filtration capacity to Eagle Industries dust collectors. Other units may be approved as equal, but their substitution will be evaluated on efficiency at 0.5 micron size and airflow movement. 3. Unit shall be 40,000 cfm minimum. 4. Furnish HEPA filters for dust collection. 5. Number of dust collectors shall be sufficient to supply a 50 ft/minute downward draft at most areas. An average may be considered. Determination of actual containment plan will be the deciding factor. Calculations of airflow shall be included in the containment submittal. 6. CONTRACTOR shall use only new filters or filters that are certified clean. N. All costs of providing the containment system (including air filtration) shall be included by the CONTRACTOR in the Base Bid. 3.5 REPAIRING THE TANKS Repair & Paint 009870 - 15 Countryview & Bluewater Tanks (2014) Job No. 41-459  A. Grout Repair 1. The grout which is between the base plates and the concrete foundations shall be tested by the CONTRACTOR under the observation of the ENGINEER by using a sharp 16 oz. hammer. 2. Any missing or loosened portions of grout shall be replaced with a non-shrinking, non-staining, high-strength structural grout material. 3. The final contour of the grout shall be vertical and flush with the edge of the base plates, and shall not overlap outside the edge of the base plates. 4. After the grout has hardened sufficiently for the application of a curing compound, a water-based curing compound shall be applied to the exposed grout surfaces. 5. After cleaning and painting, any separation between the base plates and the grout greater than 1/32" and less than 5/32" shall be filled with elastomeric sealant. B. Welding Repairs 1. All welding repairs to the interior or exterior of the tank are to be made prior to all painting operations. 2. No welding or flame cutting through the existing coating system shall be permitted, unless adequate worker protection is provided in accordance with the instructions in ANSI Z49.1, "Safety in Welding and Cutting." 3. Any resulting burrs, weld spatter, sharp edges, corners, or rough welds which would cause difficulty in applying a holiday-free coating shall be ground smooth. This grinding is considered incidental to the welding work and is to be included in the Base Bid. 4. After grinding, these areas shall be cleaned to produce the profile recommended by the manufacturer of the coating system. 5. Cleaning Areas To Be Welded a. It shall be necessary to remove the coating prior to the welding of any new items to the tank. b. All areas that have been welded and/or ground smooth shall be cleaned prior to painting to provide proper profile for the coating system. c. Areas to be welded shall be welded prior to the final cleaning and painting of surfaces within the heat-affected zone. The heat-affected zone includes the opposite side of the plate or member being welded. Even if not specifically Repair & Paint 009870 - 16 Countryview & Bluewater Tanks (2014) Job No. 41-459  mentioned as a part of the Work under this Agreement, those areas of paint or coatings in the heat-affected zone of areas not specified to be painted shall be cleaned and painted in accordance with the requirements listed in these Detailed Technical Specifications. C. Pit Filling 1. After an area of steel is abrasive blast cleaned, any pits, rough areas or seams marked for pit filling or surfacing by the ENGINEER shall be filled with solventless polyamide epoxy seam sealer of the type recommended by the supplier of the interior paint system. The epoxy seam sealer shall be applied neatly and smoothly to the steel surfaces and any rough areas of the seam sealer shall be sanded smooth prior to the application of the coating system. 2. The CONTRACTOR shall include in his base bid two gallons of pit filler. D. Seam/Seal Welding 1. All areas of apparent seam deterioration shall be abrasive blast cleaned, and any seam corrosion or undercut marked by the Engineer shall be repaired by arc- gouging and welding. 2. The number of linear feet of seam welding shall be paid for by the unit price as listed in the Bid Proposal. E. Handrail Addition (in base bid - both tanks) Fabricate and install a handrail on the exterior of the access tube at the top of both tanks as depicted in the detailed drawing in the Appendix. Depicted on side of access tube, but final location (access tube or top of tank) to be determined by OWNER at time of installation. An additional coat of zinc-rich primer shall be shop-applied to all replacement parts. G. Tank Vent (separate bid item - Bluewater Tank only) Replace tank vent with 24" Pressure Vacuum Vent as manufactured by Newlin’s Welding and Tank Maintenance (Montezuma, IN - Phone No. (765) 245-2741) K. Roof Manway (separate bid item - both tanks) Replace existing 24" roof manway with new 30" roof manway as manufactured by Newlin’s Welding and Tank Maintenance (Montezuma, IN - Phone No. (765) 245- Repair & Paint 009870 - 17 Countryview & Bluewater Tanks (2014) Job No. 41-459  2741). Details included in Appendix. An additional coat of zinc-rich primer shall be shop-applied to all replacement parts. L. Target (in base bid - both tanks) Remove and dispose of existing target, brackets and any associated appurtenances and seal all penetrations by welding, as applicable, before commencing blasting and painting operations. M. Existing Transducer and New Conduit (in base bid – both tanks) Remove existing transducer and cable under supervision of OWNER’s SCADA personnel. Install new rigid galvanized conduit from existing transducer tap to RTU panel, routing down through dry riser. Transducer and cable to be re-installed at later date by others. Details for conduit in Electrical Drawings in Appendix. N. Countryview Tank Repairs (in base bid) 1. Replace dry riser entrance door hinges and weatherstrip around door to prevent entrance by insects. 2. Replace screens on vent and dry riser vents. O. Bluewater Tank Repairs (separate bid item) Replace screened end of overflow pipe with weighted flapper and screen to meet FDEP regulations. P. Bluewater Tank Repairs (in base bid) 1. Repair door frame before blasting and painting 2. Seal conduit penetrations in dry pillar by welding plates as needed, reducing size of penetrations to match conduit size. 3. Remove and grind smooth existing old ladder brackets. 4. Replace vent screens. 3.6 REPAINTING THE TANKS A. General 1. All cleaning and painting shall be done in a workmanlike manner. Curing times and ventilation requirements of the paint manufacturer shall be strictly enforced by the CONTRACTOR. Repair & Paint 009870 - 18 Countryview & Bluewater Tanks (2014) Job No. 41-459  2. The CONTRACTOR shall have sufficient Wet Film Thickness Gauges and a calibrated Dry Film Thickness Gauge on the premises during all working hours after any painting begins. 3. In addition to the minimum and maximum dry film requirements (See Appendix, Table 1), all sags, runs, pinholes, craters, roller nap, and other irregularities which would be detrimental to the life or appearance of the coating(s) shall be removed and repaired at no additional cost to the OWNER. 4. Finish coats shall be uniform in color, hide and sheen (gloss) without streaks, laps, runs, drips, sags or missed areas. B. Painting Environment 1. All temperature and humidity requirements of the paint manufacturer's published product data shall be followed. 2. In addition, no painting shall be done when the relative humidity is greater than 80%, or the temperature of the steel is or is expected to be less than 5 degrees F above the dew point temperature during application and until the coating has cured to resist moisture in accordance with the manufacturer's published product data. 3. The CONTRACTOR shall have wet bulb-dry bulb measuring equipment and steel temperature measuring equipment on the job at all times. Readings shall be recorded at the beginning and end of each painting session and at no less than two (2) hour intervals. Wind velocities during exterior painting shall be compatible for the quality application of the exterior coatings. Measurements shall be recorded on the Daily Coatings Report. 4. Minimum Temperature a. Each component shall be maintained at a minimum of 75 degrees F prior to mixing. b. The mixed coatings shall also be maintained at a minimum of 65 degrees F during application. c. All costs associated with keeping the coating material at the minimum specified temperature shall be included in the Base Bid. 5. Mixing of Coatings a. Each component shall be thoroughly mixed on-site with a power agitator in accordance with the manufacturer’s printed instructions to ensure no pigment remains on the bottom of the container. b. An entire kit shall be mixed together to ensure proper ratios of components. c. The container shall be large enough to hold all components to be mixed, Repair & Paint