-ANSI A10.32-2012 states: All fall protection equipment shall be inspected at least every six months after initial service by a competent person.
-ANSI Z359 states: Equipment shall be inspected by the user before each use and, additionally, by a competent person other than the user at intervals of no more than one year.
-OSHA 1910.140 & 1926.502 requires no formal inspection period, only inspection by the user before each use.