Introduction of Industrial Noise

Introduction of Industrial Noise: Module 1, Part 1 of 2

2. TOPIC 1
INTRODUCTION OF NOISE

3. Differentiate between sound & noise
Identify level of noise that will effect
human ear at workplace.
Identify daily noise dose.
Understand minimum requirement of
legislation in Malaysia
Understand responsibilities of employer
& employees
At the end of this session,
participant will be able to :
OBJECTIVE

4. 1. Background
2. Sound & Noise
3. The Effects of Noise
SCOPE OF PRESENTATION

5. Get a modern
PowerPoint
Plan
Infographic
STRATEGY OSH-MP 2020

6. STRATEGIC PLAN FOR ENFORCEMENT OF NOISE
EXPOSURE REGULATION : 2018 -2020
ICOP
Guideline
STANDARD SETTING
Best Practices Compilation
Courses
PROMOTION AND PUBLICATION
Empowering OSH practicioner
HUMAN RESOURCE
Early Detection-NICE
Proactive –NCaPP
Reactive -Nforce
ENFORCEMENT
N
E
T
1
2
3
4

7. TIER 3 :
Nforce
Reactive
TIER 2:
NCaPP
Proactive
TIER 1 :
NICE
Early
Detection
Ensure workplace
complies with
Reg. 3,4 & 9
Ensuring the workplace
performs self-regulation
Avoiding the occurrence of
a new cases in NIHL at
the same workplace
COMPLIANCE OF NOISE REGULATIONS
7

8. Typeof diseases Reported cases
Occupational Lung Diseases (OLD) 101
Occupational Skin Diseases (OSD) 137
Occupational Noise Related Hearing Disorders (HD)
8997
Occupational Muscular -Skeletal Disorders (OMSD)
408
Occupational Poisoning 97
Disease cause by Physical Agent 9
Disease cause by Biological Agent 47
Occupational Cancer 5
Psychosocial Problem 11
Other Types of Occupational Diseases 9
Non Occupational Diseases 39
Total 9860
REPORTED OCCUPATIONAL DISEASES AND POISONING 2019
8

9. VS

10. WHAT IS SOUND?
10
•A form of energy that is transmitted by pressure
variations
•The vibrating chords set air particles into vibration and
generate pressure waves in the air.
•Travel through other media, such as water or steel
•Mechanical energy in the form of pressure variances in
an elastic medium. but it cannot travel through a
vacuum. There is no sound in outer space.

11. WHAT IS
NOISE?
Unpleasant or
unwanted sound
When unwanted
noise gets loud
enough
It is unpleasant
It is distracting
It is tiring & stressful
Higher levels cause
permanent hearing damage
to change colors, photos
and Text.
11

12. LIKELIHOOD
OF DAMAGE
Depends mainly on
Volume (loudness)
Frequency (pitch)
Exposure time
Can be work exposure,
social exposure or both
to change colors, photos
and Text.
12

13. HEARING MECHANISM
13
•The human ear can distinguish sound pressure within a very large area.
Oscillate to the cochlea converted into
electrical signals that continue on to the
brain.
Pressure variations set the eardrum into
motion and produce sound.
Results from oscillations in pressure, stress,
particle displacement and particle velocity
External ear
Inner ear
Middle ear

14. DEFINITION OF NOISE
In Industrial Hygiene field
Noise is defined as the sound that can cause
hearing loss if workers are exposed while
doing their job.
Thus, it is directly defined as physical term
“Level of Sound Pressure”
For example, >85dB(A) for 8-hrs is noise
whether it is wanted or not.
14

15. TYPES OF NOISE
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Type Of Noise Steady Noise Fluctuating Noise Impulse/Impact Noise
Description Noise levels are fairly
steady and meter
reading on slow
response does not
fluctuate more than 3dB
Noise levels are not
steady and meter
reading on slow
response varies over a
3dB to 10 dB range
A sudden loud noise
that differs greatly from
the normal noise levels
experienced in the
workplace.

16. TYPICAL LEVEL OF OCCUPATIONAL NOISE
16
Source :The Windsor Consulting Group Safety Training Presentations Hearing Conservation 29 CFR 1910.95

17. THE EFFECTS OF NOISE
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•Temporary hearing loss
•Cilia (hairline cells) are flattened
•Hearing returns after a short period away from noise
•Permanent hearing loss
•Permanent damage or destruction of hair cells in the ears.
•Hearing cannot be restored
Source :https://www.nationalhearingtest.org/

18. THE EFFECTS OF NOISE
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Tinnitus
Ringing, buzzing or
whistling in the ears,
when there is no external
sound
Hearing Loss
Temporary hearing loss
Short term exposure to
high noise levels
Acoustic trauma
Short term exposure to
very high noise levels
Permanent hearing loss
Excessive exposure to
harmful noise levels
Other Health Problems
●Increased heart rate
●Increased breathing rate
●Hypertension
●Sleep disturbance
●Lack of concentration ●Fatigue and
aggression

19. CAUSES OF HEARING LOSS…….
19
Age related hearing loss (Presbyacusis)
Noise Induced Hearing Loss (NIHL)

20. SIGNS OF
HEARING
LOSS
Difficulty hearing people
speak.
Inability to hear certain
high-pitched or soft
sounds.
Noise or ringing in ears.
Getting complaints that
the radio or television is
too loud.
Trouble understanding
conversation at a distance
or in a crowd
Others can hear
something you can’t
20

21. THERE IS NO
CURE FOR
HEARING
DAMAGE!
Normal hearing can never
be restored
Hearing aids do not
restore noise-damaged
hearing
Best, preventions
program at earliest/
beginning stage
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22. NON-AUDITORY HEALTH EFFECTS
22
Physical stress reaction
-Increase in muscular tension
-Increase in heart rate
-Rise in blood pressure
Long-term health effects
-Cardiovascular disease
-Fatigue
-Depression
Psychological effects
-Stress
-Anxiety
-Reduced concentration
Communication
-Misunderstanding
-Reduced social support
Auditory fatigue
Job performance
-Reduced teamwork
-Reduced productivity
-Reduced precision
Health & Safety Outcomes
-Absenteeism
-Sickness absence
-Time loss accidents
Effects of noise on the body Effects of noise on the company