AND ANSWERS SURE A+
✔✔SCBA - ✔✔(Self-Contained Breathing Apparatus) respirators. (these are shared,
UNLIKE your PPE)
✔✔What must be done before you can wear a respirator? - ✔✔1. Medical evaluation
2. Training
3. Fit test (what you did @ drug test with mask)
✔✔What can contaminate the air? - ✔✔Particulates or dusts
Organic mists or vapors
It could be that the air is oxygen deficient
✔✔There are TWO basic classes of breathing protection: - ✔✔1. Air supplied
respirators
2. Air purifying respirators
✔✔Air Supplied Respirators: - ✔✔HOSE LINE AIR-SUPPLIED RESPIRATOR - This
type of respirator uses supplied air that may come from an air compressor that is
located where the air is known to be safe or from a bank of compressed air bottles. The
air is sent to the respirator face piece through a hose.
, SELF- CONTAINED BREATHING APPARATUS (SCBA) - This is another type of Air-
Supplied Respirator. This type of respirator uses a tank of air that you carry with you. A
self- contained breathing unit (SCBA) MUST be used if the conditions of the air are NOT
known OR where the air is Immediately Dangerous to Life and Health (IDLH). Different
SCBA's may last between 5 minutes to 45 minutes. 5 minute units are only to be used
for escape or emergencies.
✔✔Air Purifying Respirators: - ✔✔This type of respirator uses filters, canisters or
cartridges that can REMOVE specific contaminants from the air before it reaches your
lungs. This type of respirator is ONLY to be used if the air contaminants have been
properly IDENTIFIED and the filter, canister or cartridge is designed to absorb the
amount of contaminant in the air. *** They must NEVER be used when the air quality is
not known and it could be Immediately Dangerous to Life and Health. The actual type of
cartridge, canister or filter that you will use is determined by the type of air hazard that
exists.
✔✔when should air purifying respirators NOT be used? - ✔✔This type of unit must NOT
be used if the air is Immediately Dangerous to Life and Health (IDLH).
✔✔Hearing Conservation Program (if the noise you will be exposed to exceeds OSHA
safe limits) - ✔✔Checking The Noise In Your Work Area - Periodically, your employer
must check work areas for noise levels that may harm you.
Hearing Tests - This is called an audiogram. It is a simple, painless test that will
determine how well you hear.
Hearing Protection/ Ear Plugs & Ear Muffs - You must wear some type of hearing
protection, either ear plugs, ear muffs, (or a combination of both) if your job exposes
you to 85 decibels in an 8-hour TWA or when you must go into any area that is
determined to be a high noise area.
Training - You must be trained every year on the proper use and care of each type of
hearing protection you will use. You will also learn how too much noise can cause
hearing loss and how hearing PPE can protect you.
✔✔How is noise measured? - ✔✔Decibals.
✔✔Engineering Controls for NOISE: - ✔✔Enclosing noisy processes in sound-
absorbing rooms.
Using carpet, resilient flooring and sound-dampening walls.
Using rubber cushions or cardboard at the end of line chutes.
Replacing noisy metal parts with quieter plastic or rubber components.
Eliminating vibration noise by placing heavy equipment on resilient pads.
Ensuring equipment is properly maintained.
✔✔Administrative Controls for NOISE: - ✔✔Operating noisy machinery on a shift when
fewer employees are present
Rotating employees out of noisy areas for part of a shift