33 C.F.R. § 142.45 Personal flotation devices.
Title 33 - Navigation and Navigable Waters
Personnel, when working in a location such that, in the event of a fall, they would likely fall into water, shall wear a work vest that meets the requirements of 33 CFR 146.20 or a life preserver that meets the requirements of 46 CFR 160.002, 160.005, or 160.055, except when using the safety belts and lifelines required by §142.42.
Title 33: Navigation and Navigable Waters
PART 142—WORKPLACE SAFETY AND HEALTH
Subpart B—Personal Protective Equipment
§ 142.45 Personal flotation devices.