A method is disclosed for installing in a conduit a monolithic liner comprised of an amine terminated resin and a hydroxyl resin combined with
isocyanate. The hydroxyl resin may include
caster oil or soy based oil. The liner mixture may include anti-static agents such as
quaternary ammonium ethosulfates, ethoxylated amines or
glycerol esters. The
coating does not utilize a catalyst. The lining forms a structural
pipe component. The lining has a
Shore D
hardness of 60 and 65 with an NCO index of 1.10 and 1.25. The apparatus includes a main component body including an umbilical comprising hoses for lining and air components and electrical power
signal, an impingement block for mixing the liner and controlled by a termination rod. The device may reciprocate forward and reverse in the
pipe. The method and apparatus can structurally reinforce the
pipe to allow operation at the pipe's original maximum allowable operating pressure.