ANSI B11.4 3rd Edition, July 15, 2008
Safety requirements for Shears
Includes all amendments and changes through Reaffirmation Notice , 2013
This standard applies to those mechanically, hydraulically, hydro-mechanically or pneumatically powered shears used to cut material by shearing, and which utilize a fixed blade(s) and non-rotary moving blade(s).
Shears addressed in this standard are commonly found in these basic applications:
2) stand–alone, automatic
3) process line
For the purpose of this standard, the term shear shall be inclusive of stand-alone, stand-alone automatic, and process line shears.