ENGLISH
EN
The information provided in the following overview has been condensed to provide the
reader with a summary of the material presented.
Potential Effects of CO Exposure
•
Work place/industry guidelines for CO exposure limits vary substantially from region to
region (OSHA) Permissible Exposure Limit (PEL) for CO is 50 ppm, as an 8-hour time weighted
average.
•
Defi nition of CO effects - The toxic effects of carbon monoxide in the blood are the result of
tissue hypoxia (lack of oxygen). The severity depends on the state of activity of the individual
and his tissue oxygen needs.
Methods to Reduce The Risks of CO Poisoning
•
Air Exchange and CO Diffusion - CO does not mix with air on its own. Air currents can "stir"
the CO and dilute the concentration values by mixing it with the available air. When using
equipment over a large area in a short time "stirring" occurs as you walk.
•
Application Considerations (Burnishing versus Stripping) - When activity is concentrated to
a smaller area as in a stripping application, air "stirring" must be forced by the use of fans to
reduce the risk of high concentrations of CO.
•
Air Quality Monitoring – Deployment of a monitor/detector is essential for the safe operation of
any equipment that has the potential to produce CO.
•
Room Size and Time Estimations - The concentration and volume of CO production, the size
of the area and the amount of air exchange are factors involved with determining safe time limits
for operation in a specifi c room size.
•
Maintenance of Equipment - LPG engines are dependent on engine tune up, and air fi lter
replacement. CO concentration (production) skyrockets when the air to fuel ratio becomes fuel
rich. Follow the recommended Maintenance Schedule for the engine.
•
Safety Equipment Available. - Envirogard automated fuel to air ratio monitoring and regulation
providing an optimum combustion, three-way type catalytic converter to scrub CO, Hydro
Carbons (HC), and Nitrous Oxide (NOx) from the engine exhaust providing the lowest possible
emissions, high cubic feet per minute (CFM) fans (forced air mixing), and digital combustion
analyzers for tail pipe emissions monitoring.
- 4 - FORM NO. 71511A
Document Overview
BLASTRAC Operator's Manual (EN) - Concrete Polisher