Try the DOE handbook ENGINEERING SYMBOLOGY, PRINTS, AND DRAWINGS at this address.
http://www.hss.doe.gov/nuclearsafety/ns/techstds/standard.htmlHere's a brief description of the topics:
Module 1 - Introduction to Print Reading
This module introduces each type of drawing and its various formats. It also
reviews the information contained in the non-drawing areas of a drawing.
Module 2 - Engineering Fluid Diagrams and Prints
This module introduces engineering fluid diagrams and prints (P&IDs); reviews
the common symbols and conventions used on P&IDs; and provides several
examples of how to read a P&ID.
Module 3 - Electrical Diagrams and Schematics
This module reviews the major symbols and conventions used on electrical
schematics and single line drawings and provides several examples of reading
electrical prints.
Module 4 - Electronic Diagrams and Schematics
This module reviews electronic schematics and block diagrams. It covers the
major symbols used and provides several examples of reading these types of
diagrams.
Module 5 - Logic Diagrams
This module introduces the basic symbols and common conventions used on logic
diagrams. It explains how logic prints are used to represent a component's
control circuits. Truth tables are also briefly discusses and several examples of
reading logic diagrams are provided.
Module 6 - Engineering Fabrication, Construction, and Architectural Drawings
This module reviews fabrication, construction, and architectural drawings and
introduces the symbols and conventions used to dimension and tolerance these
types of drawings.