Collapse to view only § 111.103-9 - Machinery stop stations.
- § 111.103-1 - Power ventilation systems except machinery space ventilation systems.
- § 111.103-3 - Machinery space ventilation.
- § 111.103-7 - Ventilation stop stations.
- § 111.103-9 - Machinery stop stations.
§ 111.103-1 - Power ventilation systems except machinery space ventilation systems.
Each power ventilation system that is not a machinery space ventilation system must have:
(a) A control to stop the ventilation that is:
(1) Outside the space ventilated; and
(2) Grouped with the controls for every power ventilation system to which this section is applicable; and
(b) In addition to the control required by paragraph (a), a stop control that is:
(1) As far as practicable from the control required by paragraph (a) and grouped with the controls for every power ventilation system to which this section is applicable; or
(2) The circuit breakers for ventilation grouped on the main switchboard and marked, “In Case of Fire Trip to Stop Ventilation.”
Note:The requirements of this section do not apply to closed ventilation systems for motors or generators, diffuser fans for refrigerated spaces, room circulating fans, or exhaust fans for private toilets of an electrical rating comparable to that of a room circulating fan.
§ 111.103-3 - Machinery space ventilation.
(a) Each power ventilation system for a machinery space must have two controls to stop the ventilation, one of which may be the supply circuit breaker.
(b) The controls required in paragraph (a) of this section must be grouped so that they are operable from two positions, one of which must be outside the machinery space.
§ 111.103-7 - Ventilation stop stations.
Each power ventilation system stop station must:
(a) Be protected by an enclosure with a glass-paneled door on the front;
(b) Be marked, “In Case of Fire Break Glass and Operate Switch to Stop Ventilation;”
(c) Have the “stop” position of the switch clearly identified;
(d) Have a nameplate that identifies the system controlled; and
(e) Be arranged so that damage to the switch or cable automatically stops the equipment controlled.
§ 111.103-9 - Machinery stop stations.
(a) Each forced draft fan, induced draft fan, blower of an inert gas system, fuel oil transfer pump, fuel oil unit, fuel oil service pump, and any other fuel oil pumps must have a stop control that is outside of the space containing the pump or fan.
(b) Each stop control must meet § 111.103-7.