practical steps to manage hav jim maccall. training practical steps to manage hav session plan...
TRANSCRIPT
TRAININGPractical Steps to Manage HAV
Session Plan
1. Health vs Safety2. Vibration White Finger3. Carpal Tunnel Syndrome4. Other conditions5. What do points make…6. Other Controls7. CDM 20158. Summary
TRAININGPractical Steps to Manage HAV
What do points make…
• Job 1 - Risk Assess jobs being done and equipment used – Eliminate exposure
• Job 2 – Control - HSE Vibration Points• Exposure Action Value – 100 Points – keep
below if possible and make sure health surveillance is done
• Exposure Limit Value – 400 Points – maximum a worker can be exposed to in a working day
TRAININGPractical Steps to Manage HAV
Managing the Risk
Risk Assessing is simply done:• Look at the whole job• How many workers• What equipment is being used• Different equipment exposes the worker to
different amounts of vibration• This is known as the vibration dose
TRAININGPractical Steps to Manage HAV
Typical Vibration Values and Trigger Times
Manufacturers Data - values in m/s2
Tool type Dose Time to 100 Points
Time to 400 Points
Road breaker – Air – 25kg 3.6 03h 51m 15h 26m
Stihl Saw – TS410 3.9 03h 17m 13h 09m
Stihl Saw – TS400 6.8 01h 05m 04h 20m
Breaker - JCB Beaver – Low Vibration 3.2 04h 53m 19h 32m
Breaker – JCB Beaver 4 03h 08m 12h 30m
Floor Saw – Clipper C99 4.7 02h 16m 09h 03m
Makita ½” drive Impact Wrench 16.5 00h 11m 00h 44m
Atlas Copco 2 stroke breaker – Cobra 4.6 02h 22m 09h 27m
Trench Rammer – 2 stroke 9.8 00h 31m 02h 05m
Wacker Reversible Compaction Plate 10 00h 30m 02h 00m
TRAININGPractical Steps to Manage HAV
• Vibration magnitude of CP9 at the time – 32m/s2 • Points per hour = (MxM)x2 • (32 x 32) x 2 = 2048 point per hour• Or 34 points per minute• EAV (Exposure Action Value – 100 points) in 3 minutes • ELV (Exposure Limit Value – 400 points) in 12 minutes• George was regularly getting >8,000 points per day
Case Study - George
TRAININGPractical Steps to Manage HAV
Measuring Trigger Time
• A timer activated by vibration that also monitors points e.g. The HAVi
A stop watch - operated by 2nd person
A timer linked to the power source
TRAININGPractical Steps to Manage HAV
Retrofitted to any tool
Vibration magnitude
Trigger time
HSE points
Flashing Light
Heavy Duty
Operated remotely
Colour coded
So how does HAVi work on site?
TRAININGPractical Steps to Manage HAV
• Train your team
• Ergonomics
• Equipment maintenance
• Anti vibration gloves???
• Health surveillance
• Planning – CDM 2015
Other Controls
TRAININGPractical Steps to Manage HAV
• The construction phase plan must set out the arrangements for securing health and safety during the period construction work is carried out. These arrangements include site rules and any specific measures put in place where work involves one or more of the risks listed in Schedule 3
• Work which puts workers at risk from chemical or biological substances constituting a particular danger to the safety or health of workers or involving a legal requirement for health monitoring
CDM 2015 – Regulation 12
TRAININGPractical Steps to Manage HAV
Conclusion
• Remember HAVS has no cure but its progress can be halted
• Its now easier to prevent than ever• Job risk assessment should aim to keep
exposure below 100 points per person• Legal limit is 400 points in 1 shift – for
emergencies!• HAVi is a simple essential piece of PPE