513 EM 385-1-1 Chapters 23-29

Sections

26-5. Inspection Requirements.

Equipment Inspections

The operator must inspect equipment related to life safety and powered tools at the start of each shift, ensuring features like guards, shut-off switches, and lighting are functional.
Rescue and Drilling Equipment: Monthly inspections and workability tests are required for rescue equipment. Additionally, drilling equipment, drift, and direction need periodic checks for stability.
Ventilation Systems and Air Monitors: A CP must test and inspect ventilation systems as outlined in the Ventilation and Dust Control Plan. A QP is responsible for inspecting air monitoring devices as per manufacturer guidelines.

Pneumatic Lines and Electrical Hazards

Routine inspections must be conducted for hydraulic and pneumatic lines as per the manufacturer's instructions or the most relevant reference, with any damaged lines removed from service.
Electricians are tasked with inspecting trucks used for underground explosive transportation to identify electrical hazards. Trucks must not have auxiliary lights powered by the truck's electrical system, and the latest inspection record should be kept in the vehicle.

Ground Conditions and Tunnel Stability

A QP must inspect ground conditions in underground haulways and accessways before Authorized Entrants' initial entry, adjusting the inspection frequency based on stability changes or construction method alterations.
Tunnel Inspection: A CP is responsible for inspecting the roof, face, and walls at the beginning of each shift and periodically thereafter to assess tunnel stability and protection against falling materials.

Blasting Area Safety

A QP must inspect underground supports in the blast area following each blast as per the specified guidelines to ensure safety and stability.

26-6. Activity Hazard Analysis (AHA) Requirements.

Development of Activity Hazard Analysis (AHA)

Ensure the AHA for powered equipment comprehensively covers safe operation requirements in underground settings, particularly addressing crushing, caught-between, and engulfment risks associated with large and heavy machinery. If only trained and authorized individuals will operate the equipment, the AHA requirements can be fulfilled within their Project Hazard Analysis (PHA).
Incorporate into site-specific AHAs the potential water-related occupational health risks, including hypothermia, chronic immersion tissue damage, growth of pathogenic bio-organisms, and Bloodborne Pathogen (BBP) exposure due to contact with sewage.

Knowledge Check Choose the best answer for the question.

26-4. When must a CP inspect the roof, face, and walls to assess tunnel stability and protection against falling materials?

At the start of each workshift and as needed

If directed by the QP

At the beginning of each shift and periodically thereafter

After an internal wall collapse

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EM 385-1-1 Paragraph 26-5.

26-5. Inspection Requirements.

a.  Equipment. (26-5.a)

(1)  The operator must inspect equipment that is powered or is important for life safety before use and at the beginning of every shift.  This includes guards, shut-off switches, lighting, and other safety equipment.  Equipment must not be operated if guards, interlocks, safety switches, or other safety features are inoperable or have been modified.

(2)  Rescue Equipment.  Conduct and document monthly inspections and workability tests of rescue equipment.

(3)  Drilling Equipment.  Periodically inspect drilling equipment, drift, and direction to assess if the work area or ground conditions have become unstable.

(4)  Inspect rigging according to chapter 15 and 29 CFR 1926.1413.

(5)  A CP must inspect and test ventilation systems according to the Ventilation and Dust Control Plan (see para 26-7.e).

(6)  A QP must inspect air monitoring devices according to the manufacturer’s instructions.

b.  Pneumatic Lines.  Routinely inspect hydraulic and pneumatic lines according to the manufacturer’s instructions or the most applicable reference listed in paragraph
26-5.  Remove any damaged or defective lines from service.  (26-5.b)

c.  Electrical Hazards.  Electricians must inspect trucks used for the underground transportation of explosives for electrical system hazards such as stray currents. Auxiliary lights on truck beds that are powered by the truck's electrical system are not permitted. Keep the most recent written record of such inspections inside the vehicle and available for review.  (26-5.c)

d.  Ground Conditions.  A QP must inspect ground conditions along underground haulways and accessways before initial entry by Authorized Entrants.  The inspection frequency is as specified in the site-specific APP or equivalent documentation and must be modified whenever changes that may affect stability are encountered, or when warranted by a change in the construction methods being used.  (26-5.d)

e.  Tunnels. A CP must inspect the roof, face, and walls of the work area at the start of each shift and as often as necessary to determine the stability of the tunnel and adequate protection from falling material.  (26-5.e)

f.  Blasting. A QP must inspect the underground supports in the blast area after each blast according to paragraph 29-8.h.  (26-5.f)

EM 385-1-1 Paragraph 26-6.