COMPLIANCE INFO_1986-2002 - Laserfiche WebLink

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4.. Place mixed maOrial under spray gun pump and spray tank until completely coated. 5. Product temperature should be 80*F. - 90'F. for best spray pattern. 6. Heat cure with hot air (Union Chill Atat Indirect Heater Ultramatic III) for three hours or until fully cured to obtain maximum chemical and physical properties. The coated area must be checked for any pinholes with a Holiday Detector, and coated over, if any found. The coating thickness should be checked with an Elcometer Thickness Gauge or Branson Coatingage. Follow the instructions on standardizing the Elcometer Model Mark I Type A Scale 14, 0-1/4". Check various areas of the tank for proper thickness as per meter reading. If any areas are not proper thickness, apply GA to the proper thickness. See Annex E. Curing the coating completely before replacing the product into the tank is accomplished be either of the following methods: Fast Cure: 1. Allow to cure for 6-8 hours at tank temperature of 77®F and or until you obtain a Barcol reading of 70. 2. To ensure cure at tank temperatures of less than 77*F, allow to cure at 65' for 48 hours or less until you obtain a barcol reading of 70*. 3. To compensate for cold weather temperatures it is recommended that you complete the following. The ambient air within the tank is heated to 140*F.-160*F by means of a 250,000 BTU in- direct heater. This is accomplished by placing a flexible hose from the,heater inside the opening and directing it at either end first for a 1-112 hours, then at opposite end for an equal time or until coating cured. (See 4 below) Check thoroughly before closing tank. 4. See Annex C for cure testing procedures. 7-6 Coverage Theoretically, 1 pound cover 0.94 square feet @t 125 mils: GA 27P unit covers: 45 sq. ft. C) 125 mils 37 sq. ft. (V1 150 mils 30 sq. ft. n 187 mils A 10% allowance should be made for product loss due to pores of steel and product left in the can. The average coating thickness should be 105 mils with minimum thickness of 1.25 mils, and a maximum thickness of 187 mils. Where no hatch cover exists, and a manhole has been cut out, the tank should be sealed in the following way: Page 9 3/85