PPE - respirators

Question 1

What does the N stand for in N95, N99, and N100?

Answer 1

Not resistant to oil. Will not work with gases and organic vapors.

Question 2

What does the R stand for in R95, R99, and R100?

Answer 2

Somewhat resistant to oil

Question 3

What does the P stand for in P95, P99, and P100?

Answer 3

Strongly resistant to oil (oil proof)

Question 4

What is the assigned protection factor for a filtering facepiece respirator?

Answer 4

10

Question 5

What is a filtering facepiece respirator?

Answer 5

Filtering facepiece respirators (FFRs) remove particles from the inhaled airstream of the wearer. Air purifying respirator. Disposable.

OSHA defines at 29 CFR 1910.134(b) a filtering facepiece respirator (dust mask) as a negative pressure particulate respirator with a filter as an integral part of the facepiece or with the entire facepiece composed of the filtering medium (

Question 6

What particle size do N/R/P95, N/R/P99, and N/R/P100 respirators remove?

Answer 6

NIOSH tests respirators using particles that simulate a 0.3-micron diameter because this size particle is most likely to pass through the filter. N95 respirators that are worn correctly will filter out at least 95 percent of particles 0.3 micron in size. OSHA states that N95 respirators are more effective at filtering particles that are smaller or larger than 0.3 micron.

Question 7

Assigned protection factor of an elastomeric half mask

Answer 7

10

Question 8

Assigned protection factor of a full elastomeric filtering facepiece?

Answer 8

50

Question 9

Assigned protection factor of a loose fitting PAPR

Answer 9

25

Question 10

Assigned protection factor of a supplied-air respirator (SAR)

Answer 10

1000 or 10000 if used in escape mode

Question 11

Assigned protection factor of a full facepiece self-contained breathing apparatus

Answer 11

10,000

Question 12

When is a fit test required?

Answer 12

Whenever negative pressure respirators are assigned and thereafter

Question 13

When is a quantitative fit test required?

Answer 13

It must be used when fit-testing a full-facepiece negative-pressure respirator when the assigned protection factor is greater than 10

Quantitative fit-testing may be used for any tight-fitting facepiece respirator. It must be used when fit-testing a full-facepiece negative-pressure respirator to obtain its assigned protection factor of 50 and allow it to be used in environments up to 50 times the PEL.

Question 14

What type of respiratory protection is required when wearing level A PPE?

Answer 14

• Highest level of respiratory protection available
• SCBA or positive pressure airline system with escape SCBA

Question 15

What type of respiratory protection is required when wearing level B PPE?

Answer 15

Same respiratory protection as level A - SCBA

Question 16

What type of respiratory protection is required when wearing level C PPE?

Answer 16

Full-face or half -face air purifying respirator

Question 17

What type of respiratory protection is required when wearing level D PPE?

Answer 17

No respiratory protection