16VAC25-50-310: Ladders, platforms, and runways

Where valves and other appurtenances require frequent manipulation and are located so that they cannot be reached or operated from the floor, a platform or other safe means of operation shall be provided. If a platform or runway is used it shall be at least 24 inches wide and be provided with standard handrails and toeboards and have at least seven feet six inches head room. All runways shall have at least two means of exit, each exit to be remotely located from the other and connected to a permanent stairway or inclined ladder leading to the floor level, or an alternate means of escape or exit as may be practical for the specific installation.