A miner has a documented diagnosis involving respiratory effects, cancer, and central nervous system impairments. Atmospheric conditions in his work environment could have what degree of causation for the miner’s health diagnosis?
a. What, if any, significance would there be in linking workplace exposure to causation of the symptoms if this individual smoked two packs of cigarettes a day, every day, for 30 years?
b. What, if any, significance would there be in linking workplace exposure to causation of the symptoms if this individual smoked two packs of cigarettes a day, every day, for 30 years?
What will be an ideal response?
a. PM2.5 may have short term + long term respiratory effects that are likely to be causal. Short-term effects may include: are inadequately descripted from PM exposure and long term effects are inadequately determined.
b. However smoking results in respirations of significant qualities of PM2.5 smoke, which could be the causes of the health conditions described.
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Identify the order of the steps for the general lockout/tagout procedure:
____ Isolate and de-energize all sources of energy to the equipment. ____ Confirm isolation with maintenance and add maintenance tags. ____ Stop the equipment. ____ Tag the start/stop station. ____ Isolate the equipment (in other words, block, tag, and lock all process lines). ____ Centralize the isolation keys in an area with restricted access (for example, a lockout/tagout lockbox).
A gauge standard is used to calibrate a micrometer.
Answer the following statement true (T) or false (F)
Which of the following statements is LEAST-Likely true?
A. When tightening a spark plug, the seal of the plug can be ruined by overtightening. B. Spark plugs that are tight will run hot and can cause serious engine damage. C. An overly tightened spark plug in an aluminum head can result in stripped threads when attempting to remove the plug at its next replacement interval. D. Using antiseize on spark plug threads reduces the torque requirement.
The diac is a __________device.
A. unidirectional B. bidirectional