Laserfiche WebLink
40.05 WORKMANSHIP <br />A. Welding shall not be done when the ambient temperature is lower than zero <br />degrees F or when surfaces are wet or when wind velocities are greater than 15 <br />MPH. <br />B. Base metal preparation shall insure the surfaces to be welded are smooth and <br />free from tears, cracks or other discontinuities. The surfaces shall be free of <br />dirt, grease, loose mill scale, rust, slag and other foreign substances. <br />C. The completed weld surface will be ground smooth and flush to produce a <br />workmanlike finish capable of being coated. <br />D. All weld spatter will be removed from the weld area. <br />E. The parts to be joined by fillet welds will be brought together as close as <br />possible. If the separation is greater than 1/16", the leg of the fillet weld will be <br />increased by the amount of the root opening. The root opening will not exceed <br />3/16". <br />F. Discontinuities such as undercut, unfilled craters and porosity will be repaired. <br />Repairs will be made using grinders or by gouging in order to remove the <br />unacceptable portion of the weld. <br />G. Fillet welds may be slightly convex, flat or slightly concave. The maximum <br />convexity and concavity shall be 1/16". <br />40.06 FILLER METAL <br />A. Filler metal requirements for welding with SMAW procedures will meet the <br />requirements of AWS 5.1 Mild Steel Covered Arc Welding Electrodes. <br />B. Electrode type will be either E6010 or E7018. Welders must be qualified for the <br />specific electrode used. <br />C. Electrodes will be purchased in hermetically sealed containers and shall be dry <br />before use. <br />D. Low-hydrogen electrodes may only be dried once. <br />E. Electrodes that have been wet will not be used. <br />TS40-2 <br />~'~1 <br />