NAC512.170. Cottrells, baghouses and flues.

     1. Before any person enters a Cottrell treater section while it is in operation, the main power supply to the section must be deenergized, tagged out and locked out where possible and the section grounded. The section must remain grounded during the period any persons are within the section.

     2. No person may enter a Cottrell, baghouse or flue where there is a possibility of toxic gas or oxygen deficiency unless the person is using a breathing apparatus which is approved by the National Institute for Occupational Safety and Health.

     3. No person may enter a baghouse, flue or chamber while it is under pressure unless emergency rescue equipment is available and a person trained in its use is stationed at the point of entrance.

     4. Positive tag-out and lock-out procedure where possible must be followed to prevent anyone from being trapped inside a Cottrell, baghouse or flue when the doors are closed.

     5. All Cottrell rectifiers with exposed high voltage conductors must be enclosed and the enclosure locked.

     6. No person may walk on flues unless temporary or permanent walkways are provided.

     7. All timber removed must, as soon as practicable, be taken from the mine and not be piled up and permitted to decay underground.

     [Inspector of Mines, Part 1 No. 16 subsecs. a, b, d & f-s, eff. 8-13-75]—(NAC A by Div. of Mine Inspection, 8-26-83)