As used in this chapter, unless otherwise provided or unless otherwise
shown by the context:
CONTAMINANT
Shall mean an undesirable substance or material in the form
of poisonous or deleterious materials, dusts, vapors, gases, fumes
or mists that are dispersed in the atmosphere in amounts in excess
of the amount normally present in the atmosphere.
DUST
Shall mean solid particles generated by handling, crushing,
grinding, rapid impulse, detonation and decrepitation of organic or
inorganic material.
ENVIRONMENTAL CONDITIONS
Shall mean the aggregate of conditions and influences existing
within the confines of a place of employment and in which a person
is required to work.
FAN
See "Ventilation fan."
FUMES
Shall mean solid particles generated by condensation from
the gaseous state.
GAS
Shall mean normally formless fluids which occupy the space
of enclosure and which can be changed to the liquid or solid state
only by the combined effect of increases in pressure and decreased
temperature.
HARMFUL CONCENTRATION
Shall mean the existence of contaminants in working areas
or occupied area in excess of the maximum allowable concentration
specified under O.S.H.A. standards.
HARMFUL CONDITIONS
Shall mean those conditions which make or tend to make or
produce a health hazard and include the following:
Excessive heat, cold or moisture
Radiant energy
Eye and ear strain
Unclean and unsanitary conditions
Confined positions (nerve and muscle strain and fatigue;
the "occupational neuroses")
HARMFUL SUBSTANCES
Shall mean those substances which make or tend to make or
produce a health hazard include the following:
Dust
Gases, vapors, fumes, mists
Solids and liquids
Infective materials
HEALTH HAZARD
Shall mean an exposure to any contaminant or condition encountered
in the environment or occupied area as a result of an industrial operation
sufficient to injure any part of the body or reduce in efficiency
the normal function of the body.
HEALTHFUL AND COMFORTABLE ENVIRONMENT
Shall mean working area under conditions of effective temperature
at which neither disease nor injury to health will result and as near
the comfort level as good industrial engineering practices will permit.
This does not apply to environments where abnormal temperature or
humidities are encountered through the inherent nature of the industrial
process and where individual protection is supplied through clothing,
supplied air or other means.
HOOD
See "Ventilation or exhaust hood."
INFECTIOUS AGENT
Shall mean pathogenic micro-organisms capable of producing
disease by entrance into the body.
MAXIMUM ALLOWABLE CONCENTRATIONS
Shall mean the maximum allowable concentrations allowed to
exist in an environment to which persons may be exposed for an eight-hour
period.
MIST
Shall mean suspended liquid droplets generated by condensation
from the gaseous to the liquid state or by breaking up a liquid into
a dispersed state.
OCCUPATIONAL DISEASE
Shall mean any pathological condition or affection resulting
from exposure to a harmful substance or condition in industry.
OCCUPIED AREA
Shall mean any place or area in which any person is, shall
be or may be required to inhabit, abide or sojourn.
PLACES OF EMPLOYMENT
Shall mean any place or area in which an employer engages
or uses the services of one or more persons.
PROTECTIVE EQUIPMENT
Shall mean a device, a permanent installation, clothing and
other means for the adequate protection of the worker against health
hazards herein defined.
SANITARY CONDITION
Shall mean the physical condition of work environments such
as will tend to prevent the incidence and spread of disease.
SEPARATOR
See "Ventilation exhaust system separator."
SERVICE INDUSTRY
Shall mean any industry or place of employment which utilizes
useful labor but does not produce a tangible commodity.
VAPOR
Shall mean the gaseous form of substances which are normally
in a solid or liquid state and which can be changed to these states
either by increasing the pressure or decreasing the temperature alone.
VENTILATION EXHAUST SYSTEM
Shall mean a complete device, including all hoods, ducts,
fans, separators and receptacles when required, any other part necessary
for the receptacles when required, and any other part necessary for
the proper installation and operation thereof.
VENTILATION FAN
Shall mean the machine which creates the movement of air
in a mechanical system ventilation.
VENTILATION OR EXHAUST DUCT
Shall mean any pipe, flume or channel, forming a part of
an exhaust or ventilation system, used to convey air, dusts, fumes,
mists, vapors or gases.
VENTILATION OR EXHAUST HOOD
Shall mean that part of a ventilation or exhaust system into
which the contaminated air, dust, fume, mist, vapor or gas first enters.
VENTILATION SYSTEM
Shall mean a complete device, including all hoods, ducts,
fans, separators, and receptacles when required, and any other part
necessary for the proper installation and operation thereof.
VENTILATION, LOCAL EXHAUST
Shall mean ventilation in which dusts, fumes, vapors, gases
and mist are removed from the atmosphere near the sources of their
generation.
VENTILATION, MECHANICAL
Shall mean ventilation which depends upon the operation of
power-driven equipment to remove air from or deliver air to the desired
location or area.
VENTILATION, NATURAL
Shall mean ventilation which depends upon natural air currents
to provide air movement in the environment or occupied area.
WORKING AREA
Shall mean the area or space in which an employer or employees
are required to work.