What Stinks?!

. by Elizabeth Guenther

I had my first run-in with a stink bug yesterday. It was terrifying. It had infiltrated my vehicle and launched an overhead attack as I began driving.

Interpreting Piping and Instrumentation Diagrams-Symbology

. by Robert Cook

Get a thorough explanation of symbology as it relates to Piping and Instrumentation-controls symbology, tag identification, I/O devices, valve symbol, primary flow element, horizontal line types, dashes, and more.

As I mentioned in Part 2, the meanings of the various symbols used on P&IDs (aka, symbology) are defined on separate drawings called “Lead Sheets” (or Legend Sheets). These are your “secret decoder rings” to P&ID symbology interpretation. Every company that builds process plants should have a set of lead sheets customized to their particular ways and means.

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