I do not see "Process Machinery" or "Equipment" in the M&S Equipment Cost Index (CEPCI). However these terms are used in the Chemical Engineering Plant Cost Index. Equipment is a collective noun used to summarize heat exchangers and tanks, process machinery, Pipe, valves & fitting, etc. You may note from the listing in Chemical Engineering Magazine, that the components fo "Equipment" are inset (tabbed in). So the components of Equipment are those things I just listed, and the components of the CEPCI are "Equipment, Construction Labor, Buildings, and Engineering & Supervision". My earlier listings failed to inset the sub-headings, and may have caused some confusion. HAZOP at