In planning for this Symposium on Turbine Oils, numerous members of Technical Committee C expressed the opinion that it might be desirable to outline briefly the organizational structure of ASTM Technical Committee C on Turbine Oils. There was an expressed feeling that due to the distances involved, and to the fact that most of our working committee meetings are held in the East, that it might be of interest to review, for our West Coast associates, some of our operational procedures. In our preliminary programing studies for this meeting, however, it became apparent that there was a particularly unique committee structure within Technical Committee C that was not only of interest to the West Coast members of ASTM but might also deserve clarification to all members of the Society—even those associated as active members of Technical Committee C. The committee to which I am referring is Section I, on Oil Systems for Turbines of Technical Committee C and, as the present chairman of this Section, I am afforded the privilege of describing its functions. The first uniqueness of Section I is that it operates jointly with The American Society of Mechanical Engineers and ASTM Technical Committee C. Secondly, it differs from other sections of Technical Committee C in that it does not develop any standard methods of test for evaluating turbine oil. Its primary objective is to evaluate performance aspects of the turbine lubricating system as related to the mechanics of the equipment and the characteristics of the petroleum products used.