what is havs?
DESCRIPTION
Hand-arm vibration reduction on construction sites David Smeatham Noise and Vibration Specialist Inspector, Manchester. What is HAVS?. Regular long term exposure to hand-arm vibration (HAV) disrupts blood circulation Vascular Neurological Musculo-skeletal Painful and disabling. - PowerPoint PPT PresentationTRANSCRIPT
Health and Safety Executive
Health and Safety Executive
Hand-arm vibration reduction
on construction sites
David Smeatham
Noise and Vibration Specialist Inspector,
Manchester
What is HAVS?
• Regular long term exposure to hand-arm vibration (HAV) disrupts blood circulation– Vascular– Neurological– Musculo-skeletal
• Painful and disabling
What does an employer need to do?
Control of Vibration at Work Regs 2005
Employers have duties to:
• Assess• Control• Information, Instruction and Training• Check
Choosing the right tool
Availability of tools
• Is it the best tool for the job?• Suitability• Efficiency
• Is it low vibration?
• Implement purchasing / hiring policy
Manage the exposure to HAV
Employers need to:estimate the vibration from the tool;• Manufacturers’ data• Standards improving• Look at guidance• Trade Associations• Internet (databases)• Measurements (ISO 5349)• Time of use
Points and the regulations
100 pointsAction value-• Reduce as far as you can• Provide training• Provide health surveillance
400 points-Limit value-• 2007/2010 see leaflet
www.hse.gov.uk/vibration
HAND-ARM VIBRATION EXPOSURE CALCULATOR
Vibration Time to reach EAV Time to reach ELV Exposure Partial Partial
magnitude 2.5 m/s2 A (8) time in min5 m/s2 A (8) time in minduration time in minsexposure partial expexposure
m/s² r.m.s. hours minutes hours minutes hours minutes m/s² A (8) points
Tool or process 1 0 0
Tool or process 2 0 0
Tool or process 3 0 0
Tool or process 4 0 0
Tool or process 5 0 0
Tool or process 6 0 0
Instructions for use: Daily Total
exposure exposure
Enter vibration magnitudes and exposure durations in the white areas. m/s² A (8) points
To calculate, press the Enter key, or move the cursor to a different cell.
The results are displayed in the yelllow areas.
Provide information
• Information and training– Risks/symptoms– Control measures– Correct tool use– Keeping warm and dry (clothing & gloves)– Avoid smoking
• Keep equipment well maintained– Tools– Attachments
Health surveillance
• Workers exposed to greater than the action value (100 points)• Tiered approach• Top tier is a self administered questionnaire• Referrals to competent person (e.g. qualified occupational nurse)
HAV reduction on construction sites
The role of the hire company
Kevin MintonHire Association Europe
Purchasing
• Purchasing policy: lead or follow demand?
• Low vibration, high efficiency equipment
• Maintenance advice
• Training for fitters
• HAV data measured in accordance with [best available standards]
Maintenance
• Planned in accordance with manufacturer’s guidance
• Take care over anti-vibration systems
Advising upstream
• Tool selection focussed on job and environment
• “… holes not drills …”
• HSE, manufacturers’ & other sources
Advising at point of hire
• Data in a useful format – or formats– Colour coded– Time to action value, time to limit value– Vibration ms-2
– HSE points
Advising at point of hire
• Data on a label or swing-ticket
• Figures from database
• Advisory leaflet
Information system 2007
OLD
• Green, amber, red
• Each item had one colour set by 8-hour exposure
• Transition between colours based on earlier guidance
NEW
• Green, amber, red
• Each item has green, amber and red times
• Transitions based on action and limit values in regulations
Information system 2007
NEW
• Green, amber, red
• Each item has green, amber and red times
• Transitions based on action and limit values in regulations
Advising
• Training programme for end users, supervisors– Operation of equipment can affect vibration by
factor of [10]
• Available on CD-ROM and flipover presenter