Hypertherm ArcGlide Torch Height Control, Инструкция по эксплуатации

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Hypertherm Safety and Compliance S-6
SAfetY
English
NoISe CAN DAMAGe HeARING
Cutting with a plasma arc can exceed acceptable noise levels as
defined by local codes in many applications. Prolonged exposure
to excessive noise can damage hearing. Always wear proper ear
protection when cutting or gouging, unless sound pressure level
measurements taken at the installed site have verified personal hearing
protection is not necessary per relevant international, regional, and
local codes.
Significant noise reduction can be obtained by adding simple
engineering controls to cutting tables such as barriers or curtains
positioned between the plasma arc and the workstation; and/or
locating the workstation away from the plasma arc. Implement
administrative controls in the workplace to restrict access, limit
operator exposure time, screen off noisy working areas and/or take
measures to reduce reverberation in working areas by putting up noise
absorbers.
Use ear protectors if the noise is disruptive or if there is a risk of
hearing damage after all other engineering and administrative controls
have been implemented. If hearing protection is required, wear only
approved personal protective devices such as ear muffs or ear plugs
with a noise reduction rating appropriate for the situation. Warn others
in the area of possible noise hazards. In addition, ear protection can
prevent hot splatter from entering the ear.
At some sites, dry dust can represent a potential explosion hazard.
The U.S. National Fire Protection Association’s 2007 edition of NFPA
standard 68, “Explosion Protection by Deflagration Venting,” provides
requirements for the design, location, installation, maintenance, and
use of devices and systems to vent combustion gases and pressures
after any deflagration event. Consult with the manufacturer or installer
of any dry dust collection system for applicable requirements before
you install a new dry dust collection system or make significant
changes in the process or materials used with an existing dry dust
collection system.
Consult your local “Authority Having Jurisdiction” (AHJ) to determine
whether any edition of NFPA 68 has been “adopted by reference” in
your local building codes.
Refer to NFPA68 for definitions and explanations of regulatory terms
such as deflagration, AHJ, adopted by reference, the Kst value,
deflagration index, and other terms.
Note 1 – Hypertherm’s interpretation of these new requirements is
that unless a site-specific evaluation has been completed to determine
that all dust generated is not combustible, the 2007 edition of NFPA
68 requires the use of explosion vents designed to the worst-case
Kst value (see annex F) that could be generated from dust so that
the explosion vent size and type can be designed. NFPA 68 does not
specifically identify plasma cutting or other thermal cutting processes
as requiring deflagration venting systems, but it does apply these new
requirements to all dry dust collection systems.
Note 2 – Users of Hypertherm manuals should consult and comply
with all applicable federal, state, and local laws and regulations.
Hypertherm does not, by the publication of any Hypertherm manual,
intend to urge action that is not in compliance with all applicable
regulations and standards, and this manual may never be construed
as doing so.
DRY DUSt CoLLeCtIoN INfoRMAtIoN