THE CORRELATION FACTORS OF HEARING LOSS TO THE WORKERS

OF PORT AND CRUSHING DEPARTMENT AT PT. X

EAST KALIMANTANDina Lusiana Sa,, Ayub Esab, Iwan M

Ramdanc

a, b, c,Department of Occupational Health and Safety, Public Health

Faculty of Mulawarman, Indonesia

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2

Introduction

Noise Induced Hearing Loss isthe hearing loss caused fromexposure to noise loud enough ina considerable period of timeand is usually caused by a noisywork environment

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Introduction

The level of danger noise impact onauditory function is influenced byintensity and frequency of noise, kind ofnoise, the contact time daily and yearly,the worker's age, disease auditory, thedistance between workers and sources ofnoise, the use of PPE, and the position ofthe ears of the sound waves.

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Introduction

PT. X is a company engaged in acoal mining. The machinerygenerated being used to mining arepower plant, Port and Crushing andconveyor loading.

Hearing loss can be caused byphysical factors such as noise frommining machinery

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Problem

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An examination that was carried outby the Center for OSH Samarinda inNovember 2014 found that on 16samples randomly selected 8 of themexperiencing hearing loss. Mostworkers who suffered hearing loss arefield workers including the workerdepartment of the Port and Crushing.

Objectives

This study aims to find out of thefactors are causing hearing loss inthe workers in order to preventpermanent hearing loss.

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Materials & Methods

This type of research isquantitative research with crosssectional approach.

The sample in this study weretaken by purposive samplingtechnique 22 people.

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Materials & Methods

Inclusion Criteria; Willing to become respondents,

working at PT. X and labor in the field,Has no history of ear disease, Do not have the habit or hobby of

listening to loud music, using a headset, often go to night clubs

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Materials & Methods

Noise intensity is measured by SoundLevel Meter Svantek REF SM 920 brandsthat has been carried out a calibration

Hearing loss was measured byaudiometer brand Oscilla SM 950.

The data is analyzed using Fisher'sExact Test with significance level α = 0.05;CI 95%.

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Results & Discussion…

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68,213,6

18,2

Education

Senior High School

D3

S1

45,5

18,2

36,4

Hearing Loss

Normal

Conductif

Mix

Results & DiscussionWork of service and Hearing Loss

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0

20

40

60

80

100

120

Hearing Loss Normal

56,243,8

50

50

Work of Service

< 5 Yr

≥ 5 Yr

p= 1.000

27,3

72,7

Work of Service (Yr)

< 5

≥ 5

Work of service is a risk of a worker associated with

long work (year) for someone to be able to impaired

hearing, especially for the type of work that the work

environment are exposed to noise that exceeds the

threshold.

Results & Discussion…Age and Hearing Loss

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0

20

40

60

80

100

120

Hearing Loss Normal

80

20

33,3

66,7

Age and HL

< 35

≥ 35

p= 0.043*

54,545,5

Age (Yr)

< 35

≥ 35

The incidence of Noise Induced Hearing Loss(NIHL) had a tendency to increase along withincreasing age.

Results & DiscussionNoise Level Intensity and Hearing Loss

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0

20

40

60

80

100

120

140

Hearing Loss Normal

85,7

14,3

40

60

Noise Level and HL

≤ 85 dB(A)

> 85 dB(A)

p= 0.074

68%

32%

Noise Level Intensity

≤ 85 dB(A)

> 85 db(A)

Weakness noise intensity

measurements using a Sound

Level Meter which is not a ''

flexible ‘’

Determination of sampling

points for respondent selection is

based on the statement that the

majority of respondents in the

daily work environment that has

been selected sampling points.

Respondent have relatively

high mobility so that they can not

be tied to any one sampling point

only.

Results & DiscussionEar Protector and Hearing Loss

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0

20

40

60

80

100

120

Hearing Loss Normal

73.3

26,7

14,3

85,7

Ear Protector and HL

Yes

No

p= 0.020*

68%

27%

5%

Ear Protector

No Use EarProtector

Use Ear Plug

Use Ear Muff

Ear protective devices can reduce noise exposure received by the ear so that the incoming noise exposure to ear is still within safe limits.

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Conclusion

There was no significantrelationship between work of service(p = 1.000), noise level intensity (p =0.074) and hearing loss.

There was a significant relationshipbetween age (p = 0.043) and the use ofear protection (p = 0.020) and hearingloss

THANK YOU

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