26.D Fire Prevention and Protection.
26.D.01 Fire Prevention and Protection Plans.
- For every underground construction project, a Fire Prevention and Protection Plan must be developed and implemented. The plan must detail:
- (1) The specific work practices to be implemented for preventing fires;
- (2) Response measures to be taken in case of fire to control and extinguish the fire;
- (3) Equipment required;
- (4) Personnel requirements and responsibilities; and
- (5) Requirements for daily and weekly fire prevention and protection inspections.
- Fire prevention and protection plans must be incorporated in either the APP or the AHA and posted at the job site.
- Fire prevention and protection plans must be reviewed with all affected personnel as often as is necessary for them to maintain a working knowledge of emergency responsibilities and procedures.
- Plans must be drilled as often as is necessary to ensure their efficacy.
26.D.02 Fire extinguishers.
- Fire extinguishers must be provided and maintained in accordance with the requirements of Section 9.
- Fire extinguishers (or equivalent protection) must be provided and maintained at each portal and shaft entry, within 100 ft (30.4 m) of the advancing face of each tunnel, and at locations containing combustible materials.
- A fire extinguisher of at least 4A:40B:C rating or other equivalent extinguishing means must be provided at the head pulley and tail pulley of underground belt conveyors.
26.D.03 Open flames/fires and smoking.
- Open flames and fires are prohibited in all underground construction operations except as permitted for welding, cutting, and other hot work operations.
- Smoking may be allowed only in areas free of fire and explosion hazards.
- Readily visible signs prohibiting smoking and open flames must be posted in areas having fire or explosion hazards.
26.D.04 Heating devices used in tunnels must be approved for such locations by a nationally-recognized testing laboratory.
26.D.05 Gasoline must not be taken, stored, or used underground.
26.D.06 Acetylene, LP-Gas, and methyl acetylene propadiene stabilized gas may be used underground only for welding, cutting, and other hot work. No more than the amount necessary for work during the next 24-hour period must be permitted underground.
26.D.07 Only fire-resistant hydraulic fluids approved by a nationally-recognized authority or agency must be used in hydraulically actuated underground machinery and equipment unless the machinery or equipment is protected by a fire suppression system or a multi- purpose fire extinguisher rated for sufficient capacity for the type and size of hydraulic equipment involved (but at least 4A:40B:C).
Knowledge Check Choose the best answer for the question.
26-9. Which of the following hazardous chemicals may not be taken, stored, or used underground?
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