Non Engineering Controls

Question 1

Maximum Use Concentration (MUC)

Answer 1

MUC = APF x Exposure Limit

Question 2

Filter Series:

Answer 2

N - Restricted to use in work places free of oil aerosols because the N-series certification tests
involve challenging with non-degradation sodium chloride aerosols
R - Intended for removal of any particulate including oil based liquid particulates
P - Also intended for any particulate including oil based liquids, however the P series filter will
not have any time – use limitations.

Question 3

Traditional approach to respirator selection

Answer 3

• TLV in ppm = cartridge,
• TLV in mg/m3 filter,
• TLV in mg/m3 & ppm = filter/cartridge combo

Question 4

Saturated Vapor Concentration (SVC) vs. Total Airborne Concentration (TAC)

Answer 4

aids in predicting the phase of the agent.

SVC > TAC Vapor SVC < TAC Particle

Question 5

CPC testing:

Answer 5

ASTM Method F739

(1) Breakthrough time – chemical becomes evident
(2) Steady state – constant concentration gradient after breakthrough

Question 6

Degradation

Answer 6

changes in barrier physical properties

Question 7

Penetration

Answer 7

flow of chemicals thru cuts, zippers, seams and imperfections

Question 8

Permeation Rate

Answer 8

max flux thru barrier

Question 9

Ficks Law applies

Answer 9

with temp, with thickness