Download - The control of noise at work regulations
![Page 1: The control of noise at work regulations](https://reader031.vdocument.in/reader031/viewer/2022022404/5456f84eaf7959b6358b6301/html5/thumbnails/1.jpg)
Solutions for Risk Reduction
![Page 2: The control of noise at work regulations](https://reader031.vdocument.in/reader031/viewer/2022022404/5456f84eaf7959b6358b6301/html5/thumbnails/2.jpg)
Shaun Knott
Casella Directive 2003/10/EC
Published Feb 15th 2003
Revised October 2005
Noise
![Page 3: The control of noise at work regulations](https://reader031.vdocument.in/reader031/viewer/2022022404/5456f84eaf7959b6358b6301/html5/thumbnails/3.jpg)
The basics
![Page 4: The control of noise at work regulations](https://reader031.vdocument.in/reader031/viewer/2022022404/5456f84eaf7959b6358b6301/html5/thumbnails/4.jpg)
The basics
L= Level, A,C,Z= Weighting F,S,I = Speed The measurement
L A F MX
LAF MX LC pk
LAF MN LA eq (Leq)
L ep’d
![Page 5: The control of noise at work regulations](https://reader031.vdocument.in/reader031/viewer/2022022404/5456f84eaf7959b6358b6301/html5/thumbnails/5.jpg)
What is LAeq
LAeq is the amount of noise we would be exposed to if we stayed in the same area for 8 hours
It is not our actual exposure
However
We need LAeq to calculate our exposure.
Some noise meters do not give LAeq and
therefore should not be used. When
measuring we use the meter to give us
a Steady Measurement or if that’s not possible
we measure one complete cycle
![Page 6: The control of noise at work regulations](https://reader031.vdocument.in/reader031/viewer/2022022404/5456f84eaf7959b6358b6301/html5/thumbnails/6.jpg)
Adding dB’s
80dB + 80dB
Doesn’t
= 160dB
![Page 7: The control of noise at work regulations](https://reader031.vdocument.in/reader031/viewer/2022022404/5456f84eaf7959b6358b6301/html5/thumbnails/7.jpg)
= 86 + 92
We take the difference between the two (6) using the table look at the amount to be added (1) and add it to the higher
So
86 + 92 = 93 dBA
Working out Lep’d
![Page 8: The control of noise at work regulations](https://reader031.vdocument.in/reader031/viewer/2022022404/5456f84eaf7959b6358b6301/html5/thumbnails/8.jpg)
LCpk
Peak noise is the highest point measured and also has legislation as to its level.
![Page 9: The control of noise at work regulations](https://reader031.vdocument.in/reader031/viewer/2022022404/5456f84eaf7959b6358b6301/html5/thumbnails/9.jpg)
The basics
Laeq to get Lep’dand
LCpk
![Page 10: The control of noise at work regulations](https://reader031.vdocument.in/reader031/viewer/2022022404/5456f84eaf7959b6358b6301/html5/thumbnails/10.jpg)
Employer must:• Reduce risks to
lowest practicable level
• Keep records and make them available including audiometry (if done)
• Buy quiet
Below lower action
![Page 11: The control of noise at work regulations](https://reader031.vdocument.in/reader031/viewer/2022022404/5456f84eaf7959b6358b6301/html5/thumbnails/11.jpg)
• 80dB(A) LEP,d
• LCPK= 135dB
• Take action as in regulations
Lower exposure action
![Page 12: The control of noise at work regulations](https://reader031.vdocument.in/reader031/viewer/2022022404/5456f84eaf7959b6358b6301/html5/thumbnails/12.jpg)
Above lower action
Employer must:• Identify all employees at risk• Put up signs• Review if any changes to noise levels• Repeat assessment <2 years• Inform employees of risk• Provide choice of PPE on request (first aid)• Provide training / education• Noise Control
![Page 13: The control of noise at work regulations](https://reader031.vdocument.in/reader031/viewer/2022022404/5456f84eaf7959b6358b6301/html5/thumbnails/13.jpg)
• 85dB LEP,d
• LCPK= 137dB
• Take action as in regulations
Upper exposure action
![Page 14: The control of noise at work regulations](https://reader031.vdocument.in/reader031/viewer/2022022404/5456f84eaf7959b6358b6301/html5/thumbnails/14.jpg)
Abover upper action
Employer must:• Demarcate as Noise Hazard Zones• PPE must be used at all times• Noise control to reduce exposure• If Lepd is over 95dBA then must use octave band
method to check if hearing protection is effective
Note: For peak action level, take the same action as for second action level
![Page 15: The control of noise at work regulations](https://reader031.vdocument.in/reader031/viewer/2022022404/5456f84eaf7959b6358b6301/html5/thumbnails/15.jpg)
Exposure limit value
• 87dB(A) LEP,d exposure limit• 140dB LCPK exposure limit (200 Pascals)• Is the maximum permissible estimated operator noise dose
whilst wearing (and not wearing) hearing protection• Value at the ear after taking into account any PPE• Therefore necessary to calculate effectiveness of PPE• NOT a target, but minimum acceptable• Target these individuals first
![Page 16: The control of noise at work regulations](https://reader031.vdocument.in/reader031/viewer/2022022404/5456f84eaf7959b6358b6301/html5/thumbnails/16.jpg)
Risk assessment
• Assess risks to Health and Safety• Done to identify actions to reduce risks• Necessary when lower action levels likely to
be exceeded• Should assess exposure, measure if likely to
be above second action levels
![Page 17: The control of noise at work regulations](https://reader031.vdocument.in/reader031/viewer/2022022404/5456f84eaf7959b6358b6301/html5/thumbnails/17.jpg)
Employees over the second action level have the right to a hearing check (audiometric test)
As a preventative measure individuals who may be susceptible to noise below this level should also be tested e.g. those with previous damage.
Audiometry
![Page 18: The control of noise at work regulations](https://reader031.vdocument.in/reader031/viewer/2022022404/5456f84eaf7959b6358b6301/html5/thumbnails/18.jpg)
The ‘competent person’
• Competent person does not appear in regs• Risk assessment/control measures to be
competently planned and carried out• Rely on ‘expert intermediaries’ for advice and
services where necessary• Guidance will be given to judge when advice
is needed
![Page 19: The control of noise at work regulations](https://reader031.vdocument.in/reader031/viewer/2022022404/5456f84eaf7959b6358b6301/html5/thumbnails/19.jpg)
Two main types of instrument are used to perform workplace noise assessments
• Sound Level Meter (SLM)
• Dosimeter
S.L.M. or Dosimeter?
![Page 20: The control of noise at work regulations](https://reader031.vdocument.in/reader031/viewer/2022022404/5456f84eaf7959b6358b6301/html5/thumbnails/20.jpg)
• Weighs only 68g• Measures Personal
Exposure• No cable• Display & Visual
alarms• 2 Button operation• Automatic
calibration
dBadge
![Page 21: The control of noise at work regulations](https://reader031.vdocument.in/reader031/viewer/2022022404/5456f84eaf7959b6358b6301/html5/thumbnails/21.jpg)
All instruments should be calibrated prior to measurement• CEL-120• Class 1 or 2• Automatically
adjusts for cavity
Calibrators
![Page 22: The control of noise at work regulations](https://reader031.vdocument.in/reader031/viewer/2022022404/5456f84eaf7959b6358b6301/html5/thumbnails/22.jpg)
Taking a measurement
• What to measure?• When to measure?• How to measure?
• What to ask the person being measured?• How to ask them?
• What to write down?
![Page 23: The control of noise at work regulations](https://reader031.vdocument.in/reader031/viewer/2022022404/5456f84eaf7959b6358b6301/html5/thumbnails/23.jpg)
Taking a measurement
So now we should have• Their name• What they are doing and how they do it• Where you measured it• Who is working with or near them• How long they do it for• The LAeq and LCpk• HML or Octave values
![Page 24: The control of noise at work regulations](https://reader031.vdocument.in/reader031/viewer/2022022404/5456f84eaf7959b6358b6301/html5/thumbnails/24.jpg)
The Results
![Page 25: The control of noise at work regulations](https://reader031.vdocument.in/reader031/viewer/2022022404/5456f84eaf7959b6358b6301/html5/thumbnails/25.jpg)
The results
• So what do we do now we have all this information, what do we actually do with it?
• Write a report ! ! ! !• What do we put on the report?• Who is the report for?• What action to take on the findings?
• Can we make it quieter and not use PPE?
![Page 26: The control of noise at work regulations](https://reader031.vdocument.in/reader031/viewer/2022022404/5456f84eaf7959b6358b6301/html5/thumbnails/26.jpg)
Hearing protection
![Page 27: The control of noise at work regulations](https://reader031.vdocument.in/reader031/viewer/2022022404/5456f84eaf7959b6358b6301/html5/thumbnails/27.jpg)
How to measure for correct hearing protection
Octave band method
Needs frequency analyser 31.5Hz - 8KHz• HML Method
Needs C and A weighted LEQ• SNR Method
Needs C weighted LEQ
Octave band is the preferred method
![Page 28: The control of noise at work regulations](https://reader031.vdocument.in/reader031/viewer/2022022404/5456f84eaf7959b6358b6301/html5/thumbnails/28.jpg)
PNR = M-(H-M) / 4 x (LC - LA - 2)
OR
PNR = M-(H-M) / 8 x (LC - LA - 2)
LAeq Octave’s less
octave attenuation
Lceq - SNR
![Page 29: The control of noise at work regulations](https://reader031.vdocument.in/reader031/viewer/2022022404/5456f84eaf7959b6358b6301/html5/thumbnails/29.jpg)
Health &
Safety
87 dB A (Lep’d)70 dB A (Lep’d)
85 dB A (Lep’d)
![Page 30: The control of noise at work regulations](https://reader031.vdocument.in/reader031/viewer/2022022404/5456f84eaf7959b6358b6301/html5/thumbnails/30.jpg)
Available options
![Page 31: The control of noise at work regulations](https://reader031.vdocument.in/reader031/viewer/2022022404/5456f84eaf7959b6358b6301/html5/thumbnails/31.jpg)
Solutions for Risk Reduction
Or
![Page 32: The control of noise at work regulations](https://reader031.vdocument.in/reader031/viewer/2022022404/5456f84eaf7959b6358b6301/html5/thumbnails/32.jpg)
Solutions for Risk Reduction
Lets make it quieter
![Page 33: The control of noise at work regulations](https://reader031.vdocument.in/reader031/viewer/2022022404/5456f84eaf7959b6358b6301/html5/thumbnails/33.jpg)
Engineered noise reduction
![Page 34: The control of noise at work regulations](https://reader031.vdocument.in/reader031/viewer/2022022404/5456f84eaf7959b6358b6301/html5/thumbnails/34.jpg)
Hand arm vibration
![Page 35: The control of noise at work regulations](https://reader031.vdocument.in/reader031/viewer/2022022404/5456f84eaf7959b6358b6301/html5/thumbnails/35.jpg)
![Page 36: The control of noise at work regulations](https://reader031.vdocument.in/reader031/viewer/2022022404/5456f84eaf7959b6358b6301/html5/thumbnails/36.jpg)
What is it?
Hand-arm vibration syndrome (HAVS) causes symptoms in fingers, hands and arms from vibrating tools.
HAVS is caused by repeated and frequent use of hand-held vibrating tools. It may also be caused by holding or working with machinery that vibrates.
It is not clear how vibration causes the condition. It is believed to be due to slight but repeated injury to the small nerves and blood vessels in the fingers.
![Page 37: The control of noise at work regulations](https://reader031.vdocument.in/reader031/viewer/2022022404/5456f84eaf7959b6358b6301/html5/thumbnails/37.jpg)
What is it?
At first the fingers may go white and cool. This is due to the small blood vessels narrowing (going into spasm).
They then go a bluish colour. This is due to the oxygen being used up from the reduced blood supply of the narrowed blood vessels.
Some people do not have the full classic colour changes
Numbness (loss of feeling) and/or tingling (pins and needles)
It may be mild and just affect the tips of the fingers Minor damage to the muscles, joints and bones may cause aches and pains in the hands and lower arm.
The strength of your grip may be weakened.
![Page 38: The control of noise at work regulations](https://reader031.vdocument.in/reader031/viewer/2022022404/5456f84eaf7959b6358b6301/html5/thumbnails/38.jpg)
What does it look like
![Page 39: The control of noise at work regulations](https://reader031.vdocument.in/reader031/viewer/2022022404/5456f84eaf7959b6358b6301/html5/thumbnails/39.jpg)
European threshold
2.5 m/s²
5 m/s²Limit threshold
Action threshold
![Page 40: The control of noise at work regulations](https://reader031.vdocument.in/reader031/viewer/2022022404/5456f84eaf7959b6358b6301/html5/thumbnails/40.jpg)
European threshold
1st Action
Limit
![Page 41: The control of noise at work regulations](https://reader031.vdocument.in/reader031/viewer/2022022404/5456f84eaf7959b6358b6301/html5/thumbnails/41.jpg)
The basics
One machine used
Exposure Time
Hours worked (8)
Vibration Magnitude in m/sExposure Measurement
More than one machine used
![Page 42: The control of noise at work regulations](https://reader031.vdocument.in/reader031/viewer/2022022404/5456f84eaf7959b6358b6301/html5/thumbnails/42.jpg)
The basics
![Page 43: The control of noise at work regulations](https://reader031.vdocument.in/reader031/viewer/2022022404/5456f84eaf7959b6358b6301/html5/thumbnails/43.jpg)
Risks
• How high the level of vibration is • How long the equipment is used for – short
exposures and occasional spells can be equally as damaging
• How tightly the equipment is gripped • How awkward the equipment is to use • How cold and wet it is when the equipment is
used.
![Page 44: The control of noise at work regulations](https://reader031.vdocument.in/reader031/viewer/2022022404/5456f84eaf7959b6358b6301/html5/thumbnails/44.jpg)
Employer must:• Assess the Risk• Reduce risks to
lowest practicable level
• Keep records and make them available
• Buy Low Vibration equipment
Below action level
A(8) is below 2.5m/sOr 100 points
![Page 45: The control of noise at work regulations](https://reader031.vdocument.in/reader031/viewer/2022022404/5456f84eaf7959b6358b6301/html5/thumbnails/45.jpg)
Employer must:
• Identify all employees at risk with an assessment
• Reduce Exposure duration
• Use warning signs • Review any changes to
levels• Inform employees of risk• Provide training /
education• Control Measures
Action level
A(8) is Above 2.5m/s
Or 100 points
![Page 46: The control of noise at work regulations](https://reader031.vdocument.in/reader031/viewer/2022022404/5456f84eaf7959b6358b6301/html5/thumbnails/46.jpg)
Employer must:• Immediate action to
prevent exposure• Reduce exposure
duration• Use warning signs • Inform employees of risk• Provide training /
education• Control Measures• Health Surveillance
Limit value level
A(8) is Above 5m/s
Or 400 points
![Page 47: The control of noise at work regulations](https://reader031.vdocument.in/reader031/viewer/2022022404/5456f84eaf7959b6358b6301/html5/thumbnails/47.jpg)
The HSE calender
![Page 48: The control of noise at work regulations](https://reader031.vdocument.in/reader031/viewer/2022022404/5456f84eaf7959b6358b6301/html5/thumbnails/48.jpg)
![Page 49: The control of noise at work regulations](https://reader031.vdocument.in/reader031/viewer/2022022404/5456f84eaf7959b6358b6301/html5/thumbnails/49.jpg)
![Page 50: The control of noise at work regulations](https://reader031.vdocument.in/reader031/viewer/2022022404/5456f84eaf7959b6358b6301/html5/thumbnails/50.jpg)
• Anti Vibration Gloves
• Effective in that they keep hands warm!
A word on PPE
“It is better to have a loose grip than a tight grip” !
![Page 51: The control of noise at work regulations](https://reader031.vdocument.in/reader031/viewer/2022022404/5456f84eaf7959b6358b6301/html5/thumbnails/51.jpg)
Solutions for Risk Reduction
Questions
07730 818267