4VAC25-40-5210. Equipping booster fans.
Booster fans shall be:
1. Provided with an automatic signal device to give warning or alarm should the fan system malfunction. The signal device shall be so located that it can be seen or heard by a responsible person at all times when persons are underground;
2. Equipped with a device that automatically de-energizes the power in unventilated active areas should the fan system malfunction; and
3. Equipped with two sets of controls capable of starting, stopping, and reversing the fans. One set of controls shall be located at the fans. A second set of controls shall be at another location remote from the fans.
Statutory Authority
§§ 45.1-161.3, 45.1-161.294 and 45.1-161.305 of the Code of Virginia.
Historical Notes
Derived from VR480-05-1.2 § 15.245, eff. July 19, 1989; amended, Virginia Register Volume 14, Issue 17, eff. July 1, 1998.