Hand Arm Vibration Guidance - Health & Safety...
Transcript of Hand Arm Vibration Guidance - Health & Safety...
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Hand Arm Vibration Guidance
Kevin Burrows
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What is HAVS?
• A disorder which affects the blood
vessels, nerves and muscles of the
hand, wrist and forearm.
• Can be severely disabling.
• Also known as Vibration White Finger.
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Why talk about HAVS?
• 1 Million workers are exposed to high
levels of vibration, of those 460,000 are
estimated to be working in construction.
• Approx 800 cases of HAVS are reported
every year.
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What are the Symptoms?
• The blood vessels (fingers go white) hence the name vibration white finger (VWF)
• The nerves in the fingers (causing pins and needles and loss of feeling)
• Bones and muscles (causing pain and loss of strength in the joints)
• The symptoms are usually at their worst when conditions are cold and wet.
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What are the Symptoms?
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Who is at Risk?
• Users of the following examples of vibrating equipment;
– Breakers
– Drills
– Wackers
– Rotary Saws
– Grinders etc
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Who is at Risk?
• Those exposed to vibrating equipment at work.
• Those with disease’s that reduce blood flow.
• Workers in cold and damp conditions.
• Smokers.
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How Can I Prevent it?
• Use low vibration tools.
• Try a different approach to your job.
• Use the right tool for the job.
• Keep blades and cutting edges sharp.
• Reduce grip and pressure, allow the tool to do the work.
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How can I Prevent it?
• Ensure the tool has been properly maintained.
• Reduce the amount of time you use the tool.
• Rotate the usage
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How can I Prevent it?
• Improve your blood circulation by:
– Keeping warm, wear gloves etc.
– Giving up smoking. Smoking drastically impairs blood flow through the body.
– Massaging and exercising fingers during work breaks.
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What else Can I Do?
• Learn to Recognise the signs of HAVS.
• Stop work and report any symptoms to your supervisor immediately.
• Use any control measures provided, i.e. gloves etc, that your employer will provide.
• Ask for advice from your safety department if in doubt.
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Remember
• Once you have had symptoms of HAVS, you will always be at risk.
• Tell your supervisor as soon as you suspect any symptoms.
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What MGJV Provide – HAV Information Pack
• HAND ARM VIBRATION SYNDROME (HAVS) INFORMATION PACK
• ASSESSMENT OF DAILY EXPOSURE LIMITS
HAND ARM VIBRATION SYNDROME (HAVS) INFORMATON PACK
ASSESSMENT OF DAILY EXPOSURE
LIMITS
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What MGJV Provide – Ready Reckoner
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Exposure Action Level
EAV set at 2.5 m/sec sq
• When this level is reached, there is a requirement to undertake specific action to reduce the risk.
• Exposure to vibration must be reduced to “As low as is reasonably practicable, using a programme of organisational and technical measures”.
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1st Action Level
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• Within MGJV these include:
• Guidance on duration of exposure
• Task sharing
• Provision of “vibration dampened
equipment”
• Use of mechanical breakers if possible
• Use of appropriate PPE
• Story Board - Tool Box talk
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EXPOSURE LIMITED VALUE
ELV, set at 5.0 m/sec sq:
• Should not be exceeded in normal
circumstances.
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2nd Action Level
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Control Measures
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Calculation of Exposure
To allow easy calculation of exposure levels, a
system of units 1 &15 minute durations have
been created for each item of equipment.
DO NOT EXCEED 400 POINTS PER DAY
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Duration Exposure Points
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• The maximum amount of units after
which ACTION is required in an 8 hour
NORMAL working day =100 per person.
• The maximum units that shall not be
exceeded in an 8 hour NORMAL
working day = 400 per person.
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What you need to do to comply
• Monitor your usage using the points
system.
• If you think that you are reaching
the first action level e.g. 100 points
as indicated in the Ready Reckoner
complete the Plant usage Form.
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HAV’s Monitoring Pad
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Using the Ready Reckoner
• Calculations can be estimated from the ready reckoner.
• Type of equipment is detailed with points already calculated in minutes
• Using the Plant Usage form calculate how many minutes for each piece of equipment.
• Complete Plant usage form weekly and hand to Supervisor
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HAVs Wheel
• A HAVs wheel is provided to give
indications of possible exposure on
various types of vibrating equipment