21 C.F.R. § 117.310
Additional requirements applying to the food safety plan
The owner, operator, or agent in charge of the facility must sign and date the food safety plan:
(a) Upon initial completion; and
(b) Upon any modification.
The owner, operator, or agent in charge of the facility must sign and date the food safety plan:
(a) Upon initial completion; and
(b) Upon any modification.