Alex G. Pappas Mask Fit Test Facility Manager SBCCOM...Alex G. Pappas Mask Fit Test Facility Manager...
Transcript of Alex G. Pappas Mask Fit Test Facility Manager SBCCOM...Alex G. Pappas Mask Fit Test Facility Manager...
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Laboratory Respirator
Protection Level Testing (LRPL)
Alex G. Pappas
Mask Fit Test Facility Manager
SBCCOM
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Purpose
To evaluate respirator protective
equipment (RPE) for military
and civilian applications
requiring protection against
nuclear, biological and
chemical (NBC) warfare agents
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Civilian CB
Protection Programs
Chemical Stockpile Emergency Preparedness Program
(CSEPP)
Emergency responders
Chemical Agent Safety and Health Policy Action
Committee (CASHPAC)
Federal workers and contractors at U.S. Army research and
storage facilities
Domestic Preparedness Program (Counter Terrorism)
National, state, and local emergency responders
Technical Support Working Group (TSWG) on Counter
Terrorism
Federal law enforcement personnel
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Laboratory Respirator
Protection Level Testing (LRPL)
“Joint Service Standardization Agreement for Fit
Factor Testing of Military Masks”, 1 Oct 91
(approved 8 Apr 92)
“Protection Factor Testing of Respirators and Suit
Ensembles”; Internal test protocol based on
standardization agreement
Relevant Test Standards and Protocols
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Authority / Regulations
29 CFR 1910.134
AR 11-34
AR 50-6
AR 385-61
DA PAM 385-61
TB MED 502
DA PAM 40-8
ANSI Z88-2.1992
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Test Items - NBC
Concepts
Each company would provide a minimum of
16 respirators (good quality) for testing.
Providing fewer respirators for testing will
increase costs.
Each company would submit donning and sizing
instructions.
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Anthropometrics
A minimum of 32 different data points will be
generated from PF testing (statistically significant
sample).
Face length and face width will be measured (neck
dam mask - neck circumference).
Test subjects will be chosen based on
anthropometrics.
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Aerosol Challenge
Corn oil
Concentration of 20 to 40 mg/m^3
Particle size of .4 to .6 microns (MMAD)
The geometric standard deviation be less than 2.0
Temperature 70F, Humidity 20%
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LRPL Testing Concepts
Subject trained and fit for each respirator model
(contractors can witness testing)
Each subject will self-don prior to testing
Joint Service standard ten-one minute exercise
routine
Oral-nasal sampling
Sampling rate of 2 to 5 lpm.
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LRPL Exercise Routine
Normal Breathing
Deep Breathing
Turn head side to side
Turn head up and down
Recite the rainbow passage
Climb stairs or sight rifle
Reach for the floor or ceiling
On hands and knees, turn head side to side
Facial expressions
Normal breathing
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Instrumentation
Rear- light scattering photometers or equivalent
Capable of measuring 100,000 PF
Real-time measurement
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Protection Level
Expression of performance based on the ratio of
concentration outside the mask to concentration
inside the mask, or
( Co / Ci ) = PL
Example: 1000 ppm /1.0 ppm = 1000
In other words, the air inside the mask is 1000 times
cleaner than the outside air
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Typical PL Data Chart
0.0 0 .00% 100.0%
10.0 1 2.08% 97.9%
50.0 0 2.08% 97.9%
100.0 1 4.17% 95.8%
150.0 0 4.17% 95.8%
200.0 0 4.17% 95.8%
500.0 1 6.25% 93.8%
1667.0 2 10.42% 89.6%
2000.0 0 10.42% 89.6%
3000.0 0 10.42% 89.6%
5000.0 4 18.75% 81.3%
6667.0 2 22.92% 77.1%
10000.0 3 29.17% 70.8%
20000.0 4 37.50% 62.5%
50000.0 3 43.75% 56.3%
100000.0 27 100.00% 0.0%
PF Frequency Cumulative% Pass Rate
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