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0 0 <br /> plate shall be attached with lining material and Al2.4 If a heater is used to accelerate the <br /> the top covered with fiberglass matting curing process, all other work that might release <br /> embedded with lining material extending at least flammable vapors in the work area shall be <br /> 6 inches beyond the perimeter of the plate. halted. The heating unit shall be attended <br /> whenever it is in operation. <br /> A11.5 The surface shall be lined or primed <br /> within eight hours after blasting and before any A13.0 TESTING <br /> visible rusting occurs. <br /> A13.1 Upon completion of the application of <br /> Al2.0 APPLICATION OF THE LINING the lining to a steel tank,the following tests shall <br /> MATERIAL be performed: <br /> Al2.1 Lining materials shall meet the A13.1.1 Lining thickness testing shall be <br /> requirement of section A4.4. performed using an magnetic, non destructive <br /> lining thickness gauge, or other acceptable <br /> Al2.2 Manufacturer's specifications are to be instrument with a minimum accuracy of plus or <br /> followed on handling and mixing of resin minus 10%. The lining thickness shall meet the <br /> compounds, and the compounds shall be requirements of Al2.3. <br /> applied to the entire interior surface of the tank <br /> by the manufacturer or his authorized contractor <br /> or contractor's qualified person or NLPA A13.1.2 Lining hardness tests shall be <br /> certified special inspector following the performed using a Barcol Hardness Tester, <br /> specified method of application. GYZJ 935, or other acceptable instrument to <br /> determine that the lining has cured to a hardness <br /> that meets the manufacturers specifications for <br /> product storage. <br /> Al2.3 The lining shall be applied to the <br /> entire interior tank wall surface to a <br /> minimum thickness of one hundred (100) <br /> mils and a nominal thickness of one hundred <br /> and twenty-five (125) mils at the <br /> recommended application temperature. A13.1.3 An internal inspection tightness test of <br /> the steel tanks interior shall be performed using <br /> a Holiday Detector with a silicon brush <br /> electrode, or other acceptable instrument to <br /> ensure the absence of air pockets, leaks or pin <br /> Note: A minimum lining thickness is required. holes in the lining. The internal inspection <br /> The lining provides additional structural strength tightness test shall be conducted at a rate of at <br /> to the tank walls by forming a composite tank. least 100 volts per mil of nominal lining <br /> A 125 mil lining provides a solid structural thickness but in no case less than 12,500 volts, <br /> barrier that can bridge future holes in the outer nor more than 35,000 volts. The internal <br /> steel tank shell which develop due to external inspection tightness test of the lining (after any <br /> corrosion during the operational life of the tank. repairs to the lining should holidays have been <br /> previously detected) must not detect any <br /> holidays.Any holidays in the lining shall be <br /> 75 <br />