This document discusses noise and vibration in occupational settings. It defines noise and vibration, describes how they are measured, and outlines their common sources and health effects. For noise, common sources include industrial facilities and transportation. Prolonged exposure can cause hearing impairment, cardiovascular disease, and stress. Vibration is caused by imbalanced rotating parts and friction in machines. It is measured by its effect on the hand, arm, or whole body. Long-term exposure is linked to hand-arm vibration syndrome and other neurological and vascular issues. Both noise and vibration can be controlled through engineering solutions like dampers, isolation, and maintenance along with personal protective equipment and limiting exposure time.
About 30 million workers are exposed to hazardous noise on the job. One in 4 of these workers (or 7.5 million Americans) will develop permanent hearing loss.Noise-induced hearing loss is the most common occupational hazard for American workers.Hearing loss from noise is slow and painless; you can have a disability before you notice it.If you must raise your voice to speak with someone only 3 feet away, you are in high (hazardous) noise. It is 100% preventable
About 30 million workers are exposed to hazardous noise on the job. One in 4 of these workers (or 7.5 million Americans) will develop permanent hearing loss.Noise-induced hearing loss is the most common occupational hazard for American workers.Hearing loss from noise is slow and painless; you can have a disability before you notice it.If you must raise your voice to speak with someone only 3 feet away, you are in high (hazardous) noise. It is 100% preventable
Any unwanted, disturbing or harmful sound that impairs or interferes with hearing, causes stress, hampers concentration and work efficiency or causes accidents called noise pollution.
The OSHA standard for noise requires at-workers to receive training on how noise affects them along with the controls to protect them from exposure and monitor their hearing. If this the type of training that you require to meet your regulatory obligations, contact us at The Windsor Consulting Group, Inc. We have over 60 occupational health and safety course offering to help your workforce, public, and the environment
Any unwanted, disturbing or harmful sound that impairs or interferes with hearing, causes stress, hampers concentration and work efficiency or causes accidents called noise pollution.
The OSHA standard for noise requires at-workers to receive training on how noise affects them along with the controls to protect them from exposure and monitor their hearing. If this the type of training that you require to meet your regulatory obligations, contact us at The Windsor Consulting Group, Inc. We have over 60 occupational health and safety course offering to help your workforce, public, and the environment
Changing vehicle class using acoustical engineering JIET-SETG
Automobile industry increasing the vehicle’s class as per passengers comfort and exploitation but this comfort not fulfill because of acoustic problem. So automobile industry expanding large amount of money to control the noise ,heat and vibration problems in passenger cabin.
This reduction of noise can be achieved with the combined effort of both acoustical and automobile engineers.
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Presentation by Barbara Szonyi, Dawit Gizachew, Azage Tegegne, Jean Hanson and Delia Grace at a consultative workshop on milk quality, Addis Ababa, Ethiopia, 25-26 June 2015.
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HAV Risk Management Best Practice - Myths and RealityPeter Wilson
This presentation is a pragmatic guide to current best practice in hand arm Vibration (HAV) risk management. It includes the myths surrounding vibration risk assessment, PPE (simple, there is none...) and other red herrings that can waste resources that would be better spent on risk reduction.
Noise and Vibration analysis services case study and overview by Gorm Dannesboe, Senior Consultant.
Presentation covers:
> Measuring Noise and vibrations
> Noise and vibration modelling methods
> How to mitigate noise and vibration on offshore platforms
> Case study from Lloyd's Register Energy.
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This paper was originally presented at the International Petroleum Technology Conference 2014.
An overview of noise pollution and control is presented, w.r.t. sources, impacts on human life, and mitigation/ control measures. Mining is a hazardous profession, numerous health impact on the miners. Hearing Impairment is one of the major health problems phased on a day to day basis in both open cast (o/c) and underground (u/g) Mines worldwide. But o/c mine is key as it is highly mechanized these days. Thus, this presentation provides basic information w.r.t. noise pollution and control in mines.
Though, noise is a controllable entity of the environment, on several occasions it is found to be uncontrollable and create severe impacts on life and induce unpleasant circumstances.
Noise pollution is a public nuisance to the environment.
This ppt contains the information about environmental noise pollution. ppt contains information related to noise pollution, sources of noise pollution, their types, different noise levels, effects of noise pollution on animals as well as on humans and also contains the tips for prevention of noise pollution.
Noise Control Stratagies in Reinforced Concrete BuildingsIJRES Journal
This study is aimed at bringing out the salient aspects of building noise control. An analysis has been carried out with respect to the noise transmission as well as the characteristics of noise inside buildings. The key issues on building noise control have been included and discussed. A comprehensive study on building noise and on acoustically divisible spaces has been made. It has been observed that a sound insulation of the order of 30 to 35 dB is possible in a given building. Further, the noise propagation parameters in an exhibition hall have been theoretically estimated. The data so obtained has been compared with actual SPL measurements and recorded. Variations in noise levels observed have been explained. Before the partition is made, the SPL drop is faster inside the building but after the partition the drop falls at the rate of 3dB for doubling the distance. The cost of the acoustically divisible partition wall is found to be very high, but the advantage of this partition seems to be creating acoustically divisible spaces where in one can conduct two programs simultaneously, without any disturbance to each other. Prior to the selection and design of control measures, noise sources must be identified and the noise produced must be carefully evaluated.
Lung Cancer: Artificial Intelligence, Synergetics, Complex System Analysis, S...Oleg Kshivets
RESULTS: Overall life span (LS) was 2252.1±1742.5 days and cumulative 5-year survival (5YS) reached 73.2%, 10 years – 64.8%, 20 years – 42.5%. 513 LCP lived more than 5 years (LS=3124.6±1525.6 days), 148 LCP – more than 10 years (LS=5054.4±1504.1 days).199 LCP died because of LC (LS=562.7±374.5 days). 5YS of LCP after bi/lobectomies was significantly superior in comparison with LCP after pneumonectomies (78.1% vs.63.7%, P=0.00001 by log-rank test). AT significantly improved 5YS (66.3% vs. 34.8%) (P=0.00000 by log-rank test) only for LCP with N1-2. Cox modeling displayed that 5YS of LCP significantly depended on: phase transition (PT) early-invasive LC in terms of synergetics, PT N0—N12, cell ratio factors (ratio between cancer cells- CC and blood cells subpopulations), G1-3, histology, glucose, AT, blood cell circuit, prothrombin index, heparin tolerance, recalcification time (P=0.000-0.038). Neural networks, genetic algorithm selection and bootstrap simulation revealed relationships between 5YS and PT early-invasive LC (rank=1), PT N0—N12 (rank=2), thrombocytes/CC (3), erythrocytes/CC (4), eosinophils/CC (5), healthy cells/CC (6), lymphocytes/CC (7), segmented neutrophils/CC (8), stick neutrophils/CC (9), monocytes/CC (10); leucocytes/CC (11). Correct prediction of 5YS was 100% by neural networks computing (area under ROC curve=1.0; error=0.0).
CONCLUSIONS: 5YS of LCP after radical procedures significantly depended on: 1) PT early-invasive cancer; 2) PT N0--N12; 3) cell ratio factors; 4) blood cell circuit; 5) biochemical factors; 6) hemostasis system; 7) AT; 8) LC characteristics; 9) LC cell dynamics; 10) surgery type: lobectomy/pneumonectomy; 11) anthropometric data. Optimal diagnosis and treatment strategies for LC are: 1) screening and early detection of LC; 2) availability of experienced thoracic surgeons because of complexity of radical procedures; 3) aggressive en block surgery and adequate lymph node dissection for completeness; 4) precise prediction; 5) adjuvant chemoimmunoradiotherapy for LCP with unfavorable prognosis.
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These lecture slides, by Dr Sidra Arshad, offer a quick overview of physiological basis of a normal electrocardiogram.
Learning objectives:
1. Define an electrocardiogram (ECG) and electrocardiography
2. Describe how dipoles generated by the heart produce the waveforms of the ECG
3. Describe the components of a normal electrocardiogram of a typical bipolar leads (limb II)
4. Differentiate between intervals and segments
5. Enlist some common indications for obtaining an ECG
Study Resources:
1. Chapter 11, Guyton and Hall Textbook of Medical Physiology, 14th edition
2. Chapter 9, Human Physiology - From Cells to Systems, Lauralee Sherwood, 9th edition
3. Chapter 29, Ganong’s Review of Medical Physiology, 26th edition
4. Electrocardiogram, StatPearls - https://www.ncbi.nlm.nih.gov/books/NBK549803/
5. ECG in Medical Practice by ABM Abdullah, 4th edition
6. ECG Basics, http://www.nataliescasebook.com/tag/e-c-g-basics
Pulmonary Thromboembolism - etilogy, types, medical- Surgical and nursing man...VarunMahajani
Disruption of blood supply to lung alveoli due to blockage of one or more pulmonary blood vessels is called as Pulmonary thromboembolism. In this presentation we will discuss its causes, types and its management in depth.
Ethanol (CH3CH2OH), or beverage alcohol, is a two-carbon alcohol
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neurochemical systems and has rewarding and addictive properties. It
is the oldest recreational drug and likely contributes to more morbidity,
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The four main behavioral effects of AUD are impaired control over
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of the prevalence and harmful consequences of AUD in the U.S.,
the systemic nature of the disease, neurocircuitry and stages of AUD,
comorbidities, fetal alcohol spectrum disorders, genetic risk factors, and
pharmacotherapies for AUD.
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Explore natural remedies for syphilis treatment in Singapore. Discover alternative therapies, herbal remedies, and lifestyle changes that may complement conventional treatments. Learn about holistic approaches to managing syphilis symptoms and supporting overall health.
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The prostate is an exocrine gland of the male mammalian reproductive system
It is a walnut-sized gland that forms part of the male reproductive system and is located in front of the rectum and just below the urinary bladder
Function is to store and secrete a clear, slightly alkaline fluid that constitutes 10-30% of the volume of the seminal fluid that along with the spermatozoa, constitutes semen
A healthy human prostate measures (4cm-vertical, by 3cm-horizontal, 2cm ant-post ).
It surrounds the urethra just below the urinary bladder. It has anterior, median, posterior and two lateral lobes
It’s work is regulated by androgens which are responsible for male sex characteristics
Generalised disease of the prostate due to hormonal derangement which leads to non malignant enlargement of the gland (increase in the number of epithelial cells and stromal tissue)to cause compression of the urethra leading to symptoms (LUTS
2. CONTENTS
What is Noise?
Classification of Noise
Measurement of Noise
Causes & its Effect
Control methods
What is Vibration?
Types of Vibrations
Causes & Effects of Vibration
Control of Vibrations
3. NOISE
“Noise is any sound independent of loudness which can
produce an undesired physiological or psychological effect
in an individual.”
Word ‘NOISE’ derived from latin word ‘NAUSEA’ which
means feeling sickness
Noise is a type of sound which:i. Caries no information
ii. Random
iii. Undesirable & Unwanted
4.
5. OCCUPATIONAL NOISE
“Noise related to any occupation is called
OCCUPATIONAL NOISE”
Workers who operate, service or maintain
vehicles, equipments & machinery are exposed to
occupational noise.
Ex- Cement & Concrete industries, Printing
press, Sheet Metal industries, Gear manufacturing
plants, Construction sites
6. MEASURMENT OF NOISE
‘DECIBEL’(dB) is used to measure the intensity of sound.
dB=10 log(I/I0)
where I= sound intensity in watts/m2,
I0= reference sound intensity
Measuring Instruments :1.
Noise Dosimeter
2.
SLM
3.
ISLM
Simple Dosimeter
7. SOURCES OF NOISE
1-Stationary Sources:- Iron & Steel plants, Textile mills, Printing
presses, Workshops, Metal Industries, use of loudspeakers on
festivals, Elections, Worships in Temples, Mosques etc
2-Mobile Sources:- Road traffic, Railway traffic, Aero traffic, Marine
vehicles, Agriculture machines
8. EFFCTS OF NOISE
Physiological Effects
a) Hearing impairment
b) Hypertension
c) Heart disease
d) Lowering the concentration and effect on memory
e) Muscular strain and nervous breakdown.
Psychological Effects
a) Depression and Fatigue
b) Mental Stress
c) Frustration
d) Sleep Interference
9. Continued….
Other Health Effects
a) Communication Disturbance
b) Habit of talking loudly
c) Uncomforting
“Traffic noise alone is harming the health of almost
every third person in the WHO European Region.”
10.
11. CONTROL OF NOISE
Noise can be controlled at three levels:
1. Reducing the sound produced.
2. Interrupting the path of the sound.
3. Protecting the recipient .
Noise can also be controlled by following:i. Reducing Impact Force.
ii. Reduce Speed and Pressure.
iii. Reducing Friction b/w Machine Parts.
iv. Isolate & Damper Vibrating Elements.
v. Providing Mufflers/Silencers.
vi. Highways could be routed away from populated areas.
vii. Maximum germination of green plants or vegetation.
12. VIBRATION
Vibration is the mechanical oscillations of an
object about an equilibrium point. The
oscillations may be regular such as the
motion of a pendulum .
Vibration Oscillation
13. Continued…
Vibration is desirable for the correct functioning
of the various devices in case of Harmoniums
Mobile Phones
Loudspeaker etc.
While Vibrations are undesirable such as-
Wasting energy
Creating unwanted sound noise
Vibration of engines, electric motors
14. TYPES OF VIBRATIONS
On the basis of force applied:-
Free vibration -Occurs when a mechanical system is set
off with an initial input and then allowed to vibrate
freely. Ex-simple pendulum
2. Forced vibration -When a time-varying disturbance
(load, displacement or velocity) is applied to a
mechanical system. Ex-shaking washing machine due to
an imbalance, transportation vibration (caused by truck
engine, springs, road, etc.),
1.
15. Continued…
On the basis of vibration expose
1. Hand Arm Vibration(HAV)When hand of a worker is
exposed to vibrating body
during the occupation.
2. Whole Body Vibration(WBV)when whole body expose to
vibrating body or system.
3. Environmental Vibration
16. CAUSES OF VIBRATION
Vibrations can be caused by i. Imbalanced rotating parts.
ii. Uneven friction.
iii. Meshing of gear teeth.
Vibration Exposure is caused in many occupations where
a worker is comes in contact with vibrating machinery or
equipment
i. Vibration enters the body from the organ in contact with
vibrating equipment.
ii. Worker operates hand-held equipment.
iii. A worker sits or stands on a vibrating floor or seat.
17. EFFECTS OF VIBRATION
Effects of HAV
i. Vibration –induced White Finger(VWF)
ii. Hand Arm Vibration Syndrome(Raynauld’s
Phenomenon
iii. Vascular
iv. Neural
Effects of WBV
i. Shakiness
ii. Insomnia
iii. Headache
iv. Fatigue