Control of Airborne Respirable Dust Hazards

Comments

Transcription

Control of Airborne Respirable Dust Hazards
Control of Airborne
Respirable Dust Hazards:
A Training Program for
Underground Coal Miners
Penn State
The Penn State
Miner Training Program
University Park, PA 16802
March 31, 2003
Raja V. Ramani, Ph.D., P.E, C.M.S.P.
Mark C. Radomsky, Ph.D. MPA, C.M.S.P.
Joseph P. Flick, M.S., C.M.S.P.
CENTERS FOR DISEASE CONTROL
AND PREVENTION
NATIONAL INSTITUTE FOR
OCUPATIONAL SAFETY AND HEALTH
GENERIC MINERAL TECHNOLOGY CENTER
ON RESPIRABLE DUST
PENNSYLVANIA BUREAU OF DEEP MINE SAFETY
TRAINING PROGRAM PURPOSES
The purposes of the training program are to
enhance the knowledge and understanding
of the:
 Various dusts that may be present in the mine
environment
 Human respiratory system and the protective
mechanisms in the system
 Health hazards associated with coal mine dust
TRAINING PROGRAM PURPOSES
 Mandatory respirable coal mine dust standards
 Miners’ rights and operators’ responsibilities
 Generic methods of contaminant control and
hierarchy of controls
 Underground mining methods and sources of
dust – Longwall and Continuous mining
methods
TRAINING PROGRAM PURPOSES
 Longwall dust control methods
 Continuous mining dust control methods
 Dust control plan parameters
 Personal dust sampler and operator’s
sampling program
 Medical surveillance program
Respirable Dust
Training Program
Section 1
TYPES OF DUSTS
Potentially Harmful Airborne Agents
Airborne agents in mining that can cause
injury or respiratory illness, or disease
 Dusts
 Gases
 Mists
 Vapors
 Fumes
 Smoke
Dusts
Probably the most hazardous to miners
 Very small solid particles
 Usually result from a larger piece of the same
material being crushed, drilled, struck, ground, or
detonated
 Dusts settle from the air by the force of gravity
Dust particles can
be so small and so
light that they act
nearly the same as
air itself
Types of Mine Dusts
 Fibrogenic Dusts – Capable of producing
fibrosis or scarring of lung tissues, e.g. silica, coal,
silicates, iron ore.
 Carcinogenic Aerosols – Capable or
suspected of causing cancers, e.g. asbestos,
diesel particulate matter, silica.
 Toxic Aerosols – Poisonous to body organs
and tissues, e.g. ores of lead, uranium, arsenic,
beryllium.
Types of Mine Dusts
 Radioactive Dusts - These cause injuries
because of alpha and beta radiation, e.g. ores of
uranium, radium, thorium and radon daughters
attached to other dusts.
 Explosive Dusts - These dusts can cause
explosions under suitable conditions, e.g. coal,
pyrite and metallic dusts.
 Nuisance Dusts - Dusts with no particular
health effect on humans, e.g. gypsum, limestone
* IMPORTANT *
1. No dust should be considered as harmless
to human health. When inhaled in large
quantities, the body’s defensive mechanisms
can be overwhelmed.
2. In mining, it is common to have a mixture
of dusts due to mining the roof or floor or
both [the country rock] with the coal seam
or the ore body. Other sources of dust include
rock dust, wood supplies, and diesel engines,
if used.
Proceed to Section 2
Human Respiratory System

Similar documents