Gas Testing Basics
What is the purpose of Gas Testing?
What is to identify the presence of hazardous gases.
What must be documented after testing?
Gas Test Record
What is the oxygen range in an area?
What is betwen 19.5% and 22.5%
What must be done before conducting a gas test in a confined space?
What is a Hazard Assessment and a permit
During an initial gas test, what must always be worn?
What is SCBA or SABA
The employer must ensure that this type of person conducts atmospheric testing and records the results at times/frequencies appropriate to the hazards.
What is a Competent Person.
What should be done if unsafe levels are detected?
What are:
Ensure your safety
Report levels
Put controls in place
No person’s exposure to a hazardous substance in the atmosphere exceeds the applicable what?
What is threshold limit value (TLV).
What must a gas tester have arranged in order to comduct a gs test in a confined space?
What is emergency response
Every employer must ensure that each personal gas monitoring device used at a workplace under its control is this before each use
What is bump tested
Which instrument should be used for gas testing?
What is a calibrated monitor with a sampling pump.
Work permits are usually required during these types of activities
What are Confined Space Entry and Hot Work
The concentration of any flammable, explosive, or combustible substance must be less than what% of its lower explosive limit (LEL).
What is 10%.
The competent person must perform preliminary atmospheric testing from where before entering to carry out further testing
What is Outside
How often should gas monitors be calibrated?
What is as per manufacturer specification.
The 4 most common atmospheric hazards tested
What are:
1. Oxygen
2. Flammable Gases
3. H2S, and
4. Carbon Monoxide
Work permits cease to be valid this many hours after the most recent test.
What is 12
If atmospheric hazards arise, the area will be well _____________.
Because gases and vapors can move between spaces through cracks, ducts, or openings, these areas must also be tested to prevent unexpected exposure.
What are Adjacent Spaces
Before gas testing, what’s the first thing the tester should verify about their RPE?
That it’s properly fitted, inspected, and functioning
What does LEL and UEL Stand for?
What are the
Lower explosive Limit
and
Upper Explosive Limit
Initial training must be provided for workers, and recertified every how many years?
What is 3
When must gas testing take place?
What is:
Before each time the confined space becomes occupied (unless continuous monitoring has been in place while the space was unoccupied and no irregularities were detected).
After any change in the work or to the confined space that may affect its atmosphere.
At least every 12 hours while the confined space remains occupied.
Testing at muliple levels in confined spaces is important due to this phenomena
What is Gas Stratification (layering)
What should be done if your gas monitor alarms?
What is evacuate immediately