ANSI/ASSE Z117.1-2009
Safety Requirements for Confined Spaces

Standard No.

ANSI/ASSE Z117.1-2009

Release Date

2009

Published By

American National Standards Institute （ANSI)

Status

Be replaced

Replace By

ANSI/ASSE Z117.1-2016

Latest

ANSI/ASSE Z117.1-2016

Scope

This standard provides minimum safety requirements to be followed while entering, exiting and working in confined spaces at normal atmospheric pressure.

ANSI/ASSE Z117.1-2009 history

• 1970 ANSI/ASSE Z117.1-2016 Safety Requirements for Entering Confined Spaces
• 2009 ANSI/ASSE Z117.1-2009 Safety Requirements for Confined Spaces