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22 <br /> <br />6 Repairing the MSKT <br /> <br />Equipment Needed for Repair Operation <br /> <br /> Acetylene torch to metal saw cut or burn off the damaged rail, <br /> Heavy duty chain to remove the impact head may be required, <br /> Tools used to install standard highway guardrails, including sockets & wrenches, etc., <br /> Vice grip or channel lock pliers, <br /> Sledge hammer. <br /> <br />Be sure proper traffic control is deployed to protect workers and motorists. Follow the <br />requirements shown in the Manual on Uniform Traffic Control Devices (MUTCD). <br /> <br />General Repair Procedures <br /> <br />After an end-on impact occurs with the MSKT, it will require replacement of the first 12'-6" <br />end section of rail and any other damaged rail section(s) and any damaged post(s). For a traffic <br />face impact downstream of the impact head, the damage will typically be to the downstream <br />rail section(s) and associated posts. <br /> <br />The general step-by-step procedure for repairing a damaged terminal is as follows: <br /> <br />(1) Check the impact head for damage. <br /> <br />(2) Check the cable assembly for damage. The cable anchor bracket, bearing plate, nuts, <br />washers, and the special cable anchor bracket shoulder bolts may be reusable. <br /> <br />(3) Check the number of broken posts and blockouts that need to be replaced, along with <br />any damaged bolts. Inventory and pick up the reusable parts. <br /> <br />(4) Torch or cut off the kinked rail at the exit opening near the outlet of the impact head. <br />Because of the open throat configuration, the impact head may be able to be removed <br />by hand at this point. If not, then hook up a chain attachment through the opening <br />behind the impact plate of the impact head. Pull the impact head off the rail with the <br />chain attached to a truck frame with the W-beam guardrail still attached to the <br />downstream guardrail posts. <br /> <br />(5) Disconnect and remove the damaged rail from the posts. <br /> <br />(6) Remove the damaged posts. Hinged post #2 can be unbolted. Remove the standard <br />steel "SP" standard guardrail posts. <br /> <br />(7) Reinstall the system following the procedures listed in this manual. <br /> <br /> <br /> <br />Cut off the <br />damaged rail