All gas fired appliances, including heat treating furnaces, foundry furnaces, and forge furnaces, shall be equipped with approved automatic safety devices. Storage of compressed combustible gases, such as oxygen and acetylene, shall not be located less than 20 feet from open flames, except in specifically approved storage facilities. Storage of oxygen and acetylene gases shall be limited to two cylinders of each per laboratory unless manifold systems exist. Oxygen acetylene manifolds are to be located so that any combustible material, grease, or oil is at least 20 feet away. No more than two cylinders of each are to be connected to the manifold, and one cylinder may be kept in storage at the same location.
All cylinders are to be anchored securely.
Piping from cylinder hookup to welding area is to be of rigid iron or steel. Flame arrester is to be located near cylinder hookup and shutoff valve is to be provided in each line near the welding area. Each manifold supply is to be separated by at least 20 feet, or, if located in the same area, be separated by brick or cinder block wall at least five feet high. All paint and thinners shall be stored in an approved metal cabinet with doors. All liquids with low flash points shall be contained in metal containers with spring latch lids.