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.

Bioremediation: Cleaning Up Oil Spills to Spilled Beer -- Sorry Brawny

. by Kent Harrington

Just when events in the Gulf seemed dire, almost Biblical, the National Oceanic and Atmospheric Administration, NOAA, (an apt Old Testament pun) reported that oil from the BP spill was rapidly breaking down. Many scientists were skeptical-- it smelled like spin. The post-Exxon Valdez consensus was directly challenged.

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