B. 8.6. Fans Flashcards
What is the definition of “main fan”?
“main fan” means a fan that controls the entire air flow of a mine, or the airflow of one or more of the major air circuits.
What is the definition of “booster fan”?
“booster fan” means a fan installed underground in the main air stream or in a split of the main air stream to assist the main fan to increase airflow and/or overcome resistance through a section of a mine.
Why must the employer take reasonable measures to ensure that combustible materials, explosives or natural vegetation are not located so near to fan installations and its switch-gear used for underground ventilation?
- 6(1) The employer must take reasonable measures to ensure that combustible materials, explosives or natural vegetation are not located so near to fan installations and its switch-gear used for underground ventilation, that if such combustible materials, explosives or natural vegetation catch fire, there is a significant risk to the supply of clean air to any underground working place as a result of-
(a) the fan installation or its switch-gear being damaged; or
(b) smoke or fumes being drawn into any working place.
What measures must the employer ensure, where a significant risk of an explosion of flammable gas or coal dust exists, that there is always a supply of clean air to all underground working places?
- 6(2) The employer must ensure, where a significant risk of an explosion of flammable gas or coal dust exists, that measures are in place to ensure that there is always a supply of clean air to all underground working places. Such measures must include-
(a) installing the main fan on surface;
(b) providing an effective means of protecting the main fan against damage caused by explosion;
(c) ensuring the main fan is readily accessible to affect emergency repairs; and
(d) having a back up system in place to provide clean air should the main fan become inoperative.
What must the employer, as far as reasonably practicable provide every main fan with?
- 6(3) The employer must ensure, as far as reasonably practicable that every main fan is provided with-
(a) an automatic means of alerting a responsible person should it stop or cease to operate;
(b) an effective means of giving early warning of defective operation;
(c) a power supply from two different sources or networks, which can include an emergency supply alternator/generator, for power supply in the event of an interruption to the normal power supply; and
(d) an effecting means for safe entrance and exit (escape) from the main fan housing.
What examinations need to be done to every main and booster fan?
- 6(4) The employer must take reasonable measures to ensure that a competent person examines every main and booster fan for effective operation, internally and externally, together with all appurtenant components that are necessary for the operation of the fan, at intervals not exceeding three months, or any other lesser interval determined by the mine’s hazard identification and risk assessment in terms of section 11.
- 6(5) The employer must keep records of all examinations conducted in terms of regulation 8.6(4), including remedial measures taken, for a period of at least the most recent ten years of the fan installation.
- 6(6) The employer must take reasonable measures to ensure that all main and booster fans are installed, operated and maintained in accordance with a written procedure prepared and implemented for that purpose.
What is the definition of “main fan”?
“main fan” means a fan that controls the entire air flow of a mine, or the airflow of one or more of the major air circuits.
Why must the employer take reasonable measures to ensure that combustible materials, explosives or natural vegetation are not located so near to fan installations and its switch-gear used for underground ventilation?
- 6(1) The employer must take reasonable measures to ensure that combustible materials, explosives or natural vegetation are not located so near to fan installations and its switch-gear used for underground ventilation, that if such combustible materials, explosives or natural vegetation catch fire, there is a significant risk to the supply of clean air to any underground working place as a result of-
(a) the fan installation or its switch-gear being damaged; or
(b) smoke or fumes being drawn into any working place.
What measures must the employer ensure, where a significant risk of an explosion of flammable gas or coal dust exists, that there is always a supply of clean air to all underground working places?
- 6(2) The employer must ensure, where a significant risk of an explosion of flammable gas or coal dust exists, that measures are in place to ensure that there is always a supply of clean air to all underground working places. Such measures must include-
(a) installing the main fan on surface;
(b) providing an effective means of protecting the main fan against damage caused by explosion;
(c) ensuring the main fan is readily accessible to affect emergency repairs; and
(d) having a back up system in place to provide clean air should the main fan become inoperative.
What must the employer, as far as reasonably practicable provide every main fan with?
- 6(3) The employer must ensure, as far as reasonably practicable that every main fan is provided with-
(a) an automatic means of alerting a responsible person should it stop or cease to operate;
(b) an effective means of giving early warning of defective operation;
(c) a power supply from two different sources or networks, which can include an emergency supply alternator/generator, for power supply in the event of an interruption to the normal power supply; and
(d) an effecting means for safe entrance and exit (escape) from the main fan housing.
What examinations need to be done to every main and booster fan?
- 6(4) The employer must take reasonable measures to ensure that a competent person examines every main and booster fan for effective operation, internally and externally, together with all appurtenant components that are necessary for the operation of the fan, at intervals not exceeding three months, or any other lesser interval determined by the mine’s hazard identification and risk assessment in terms of section 11.
- 6(5) The employer must keep records of all examinations conducted in terms of regulation 8.6(4), including remedial measures taken, for a period of at least the most recent ten years of the fan installation.
- 6(6) The employer must take reasonable measures to ensure that all main and booster fans are installed, operated and maintained in accordance with a written procedure prepared and implemented for that purpose.
What is the definition of “main fan”?
“main fan” means a fan that controls the entire air flow of a mine, or the airflow of one or more of the major air circuits.
Why must the employer take reasonable measures to ensure that combustible materials, explosives or natural vegetation are not located so near to fan installations and its switch-gear used for underground ventilation?
- 6(1) The employer must take reasonable measures to ensure that combustible materials, explosives or natural vegetation are not located so near to fan installations and its switch-gear used for underground ventilation, that if such combustible materials, explosives or natural vegetation catch fire, there is a significant risk to the supply of clean air to any underground working place as a result of-
(a) the fan installation or its switch-gear being damaged; or
(b) smoke or fumes being drawn into any working place.
What measures must the employer ensure, where a significant risk of an explosion of flammable gas or coal dust exists, that there is always a supply of clean air to all underground working places?
- 6(2) The employer must ensure, where a significant risk of an explosion of flammable gas or coal dust exists, that measures are in place to ensure that there is always a supply of clean air to all underground working places. Such measures must include-
(a) installing the main fan on surface;
(b) providing an effective means of protecting the main fan against damage caused by explosion;
(c) ensuring the main fan is readily accessible to affect emergency repairs; and
(d) having a back up system in place to provide clean air should the main fan become inoperative.
What must the employer, as far as reasonably practicable provide every main fan with?
- 6(3) The employer must ensure, as far as reasonably practicable that every main fan is provided with-
(a) an automatic means of alerting a responsible person should it stop or cease to operate;
(b) an effective means of giving early warning of defective operation;
(c) a power supply from two different sources or networks, which can include an emergency supply alternator/generator, for power supply in the event of an interruption to the normal power supply; and
(d) an effecting means for safe entrance and exit (escape) from the main fan housing.
