SIlica Final

SIlica dust can be so small that it cannot be seen by the naked eye

• True

• False

OSHA has set the permissible exposure limit, often called the "PEL", of crystalline silica to be ______ of respirable crystalline silica per cubic meter of air averaged over an eight-hour work day.

• 50 micrograms

• 100 micrograms

• 1000 micrograms

• 2,500 micrograms

Under the Occupational Safety and Health Act, workers have the right to:

• Two ten minute breaks and a lunch break

• A safe workplace

• Overtime pay

• Two weeks of vacation

When should compressed air be used for cleaning up dust that might contain silica?

• To clean surfaces, inside

• To clean surfaces, outside

• To clean off clothing at the end of the day

• Never

Table 1 in Subpart Z has the Specified Exposure Control Methods When Working With Materials Containing Crystalline Silica

• True

• False

Controls to reduce exposure to respirable silica include which of following:

• Wet Cutting

• Wet cutting Shrouds and HEPA dust collection system

• Equipment in good working condition

• All of the above

If you see visible silica dust being generated, it probably means the level of invisible silica

• True

• False

Excluding hood type respirators, a respirator needs to have a tight seal to the skin of your face in order to keep dust out your lungs

• True

• False