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Assignment 3

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Submitted By buddy1956
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The TLV for carbon monoxide is 25ppm according to the Ministry of Labour for Ontario. Define the terms TLV and ppm and calculate them for the following example:
ANSWER: The Term TLV is Threshold Limit Value, of any given chemical substance to which it is believed that a worker can be exposed during a given time period.
PPM: Concentration by volume “Parts Per Million” – parts of gas or liquid
A mechanic in an automotive repair shop is exposed to the following carbon monoxide levels over an 8 hour shift.
1. 2 hours @ 34 ppm
2. 5 hours @ 40 ppm
3. 1 hour @ 20 ppm
Is the worker over-exposed during the duration of the work-shift?
ANSWER: According to the calculation as per the Ministry of Labour for Ontario, YES, the worker is over-exposed during the duration of their shift
What is the primary concept of hazard recognition and the hierarchy of hazard control?
ANSWER: The hierarchy of controls is the standard system of strategies to effectively eliminate workplace hazards, by reducing incidents, accidents, injuries and property damage.
Going through this list – explain how they might be applied to this example to provide potential solutions.
ANSWER: Elimination: physically removing it—is the most effective hazard
Substitution: replacing something that produces a hazard with something that does not produce a hazard
Engineered: Isolate workers from the hazard- proper machinery or a monitoring unit in the work place to gauge carbon monoxide and to ensure it does not go above TLV limits
Administrative: changes to the way people work, these include procedure changes, employee training, and installation of signs and warning labels
Personal Protective Equipment (PPE) includes gloves, respirators, hard hats, safety glasses, high-visibility clothing, and safety footwear.
2. Referring to question 1, how could you use the elements of the hazard control

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