Tuesday, September 11, 2007

History of ASME B31

Author JohnBreen writes on eng-tips that that The ASME B31 Code for Pressure Piping includes specific “books” for various piping applications.  The Code is dynamic and the “sitting committees” work at keeping the Codes up to date with current standard industry practice – note, not “cutting edge”, not “trend setting”, not “latest and greatest" - rather current standard industry practice.   The B31 Codes are not the final word, only the latest word.


The history of the B31 Code is very interesting.  In 1926 the American Standards Associations, ASA (forerunner of ANSI) initiated project B31 to develop a pressure piping Code.  The resulting document, "American Tentative Standard Code for Pressure Piping, ASA B31.1 was issued in 1935.


During the long history of the B31 Codes various “book section” numbers were assigned for development.  Some of these documents were developed but not used as the work was pulled into another “book”.  Others of them were withdrawn when superseded by another document.  For completeness JohnBreen presented the following list of B31 “projects” and Codes:


B31.1 – Power Piping

B31.2 – Fuel Gas Piping, WITHDRAWN superseded by ANSI Z223.1

B31.3 – Process Piping, (formerly Chemical Plant and Petroleum Refinery Piping)

B31.4 – Liquid Hydrocarbon Transportation Piping (for example oil cross country pipelines)

B31.5 – Refrigeration Piping

B31.6 – Chemical Plant Piping, never issued as a separate document, folded into B31.3

B31.7 – Nuclear Power Piping, WITHDRAWN, superseded by ASME Code, Section III

B31.8 – Gas Transportation Piping (for example cross country gas pipelines)

B31.9 – Building Services Piping (for example office building hot water heating and air conditioning)

B31.10 – Cryogenic Piping, never issued as a separate document, folded into B31.3

B31.11 – Slurry Transportation Piping (for example cross country coal/water slurries)


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1 comment:

BR said...

New code is being developed
ASME B31.12- code for Hydrogen Pipilines
may also be added to this list
for more info