3m oh & es division hearing protectors 2010: what… s/eei fall 2010... · 3m oh & es...
TRANSCRIPT
3M OH & ES Division
Hearing Protectors 2010: What’s New and What’s Not
Lee D. Hager
© 3M 2010. All Rights Reserved.
Hearing [email protected]
3M OH & ES Division
After 40 years…hearing loss continuesy gInjury and Illness Trend 2004-2007
300,00029 CFR 1904.1028,400 26,900
24,40023,000
22,100
150,000
200,000
250,000– STS resulting in impairment
– 2004 -2008220,700 215,600 203,600
183,300 165,300
-
50,000
100,000– 2004 -2008
≈ 25,000 hearing impairments per year2nd l t ifi ill -
2004 2005 2006 2007 20082nd largest specific illness
≈ 10% of all illnesses recorded
2008 by Injury TypePrivate Industry Only
recordedSince 2004– >125 000 impariments 112,00035,800
22,10014,800 2,600
All OtherSkinHearing LossRespiratoryPoisoning
2© 3M 2010. All Rights Reserved.
>125,000 impariments g
3M OH & ES Division
Are HPD to Blame?Are HPD to Blame?Laboratory
Average 23
30
FieldAverage 23
Average 8
15
20
25 Average 8
5
10
15
0
Down
Custo
mSo
und-
Ban
UltraF
itV-
51R
POP/
Soft
EP10
03-
flang
eE-
A-R fo
am
Pelto
r H9A
Misc. M
uffs
MSA M
k IV
rg N
o N.
..lso
m 23
13lto
r H7P
3Eils
om U
F-1
3© 3M 2010. All Rights Reserved.
So
P
E-A Pe Mis MS
Hellbe
rg
BilsPe
lto Bils
Berger, EARLog 20, 1993
3M OH & ES Division
US HPD Evaluation
NRREPA testing and labeling
i t
Label value is inaccurate– Variability in even lab data– Typical SD 3-5 dB per
requirementsLab basedUnreliability leads to
yp pfrequency
Unreliability leads to derating
• OSHA: (NRR-7)/2• NIOSH: Variable by type
Pressure on mfr.Test Frequency 125 250 500 1000 2000 3150 4000 6300 8000 NRR
4
© 3M 2010. All Rights Reserved.
Test Frequency 125 250 500 1000 2000 3150 4000 6300 8000 NRR
Mean 37.4 40.9 44.8 43.8 36.3 41.9 42.6 46.1 47.3 29
SD 5.7 5.0 3.3 3.6 4.9 3.0 3.1 3.5 2.7
3M OH & ES Division
Does the New Label Address the Issue?
Classic
6
7
Classic
70
0
1
2
3
4
5
6 n = 70
Mean = 31 dB
SD = 6 6ated
018 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42
SD = 6.6
Range 18 to 42
ey li
ne =
NR
R
e =
OS
HA
dera
FX
n = 25
FX
4
5
6
Gre
Bla
ck li
n
Mean = 24 dB
SD = 4.6
Range 12 to 32
0
1
2
3
12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
5
© 3M 2010. All Rights Reserved.
Range 12 to 32
3M OH & ES Division
If we need to know how well HPD work on individuals … Test them on individualsTest them on individuals
Note: All of the approaches described today are point measuresREATREAT
Hearing test plugs in vs plugs outFitCheckTMFitCheckTM
http://michaelassociates.com/Current equipmentq pPros/Cons
6© 3M 2010. All Rights Reserved.
3M OH & ES Division
Individual HPD Testing 2
MIREMeasurement of SPL outside vs inside HPDMeasurement of SPL outside vs inside HPDE-A-RfitTM
http://www earfit 3m comhttp://www.earfit.3m.comSafetyMeter (Phonak)
http://www.phonak-communications.com/en/hearing-protection/hearing-t ti d tprotection-products
Pros/Cons
7© 3M 2010. All Rights Reserved.
3M OH & ES Division
Individual Testing 3
Pneumatic PressureElacinElacin
Loudness BalanceBalance level left & rightBalance level left & right
Open1 earplugp g2 earplugs
VeriProTM Sperianhttp://www.howardleight.com/veriprodemo/vp.html
Pros/Cons
8© 3M 2010. All Rights Reserved.
3M OH & ES Division
Individual Fit Testing Applicationsg pp
Train and motivate employeesTrain and motivate employeesTrain the trainerAssign/select HPDs Provide standard-threshold-shift (STS) follow up Determine HPD adequacy/sufficiencyA dit departmentsAudit departmentsDemonstrate adequacy of trainingProvide documentation Provide documentation
• Berger 2006
9© 3M 2010. All Rights Reserved.
3M OH & ES Division
Special Noises/Needs Require Special HPD
Impulse GunfireGunfireArc flash
Low attenuation
10© 3M 2010. All Rights Reserved.
Flat attenuation
3M OH & ES Division
Earmuffs and Electronics
• 2-way radio• Entertainment• Ambient pass-
through
• Plugs + Muffs• Higher +5g• ISHN 2/2010
11© 3M 2010. All Rights Reserved.
3M OH & ES Division
Thank You Kindly
HPD can workAttention is requiredSelect properly
DemographicsNoise exposure
M it Monitor useFit testing
The latest in hearing aids …Lee D. HagerHearing Conservationist517 290 1907
12© 3M 2010. All Rights Reserved.