VIBRATION

Manchester, 2019

AGENDA

1.0 Introduction to Vibration and how Hilti helps manage the risk

2.0 Hilti's approach to reducing vibration exposure

2E1 Pricing | Update Pricing GB Sales & Marketing Meeting | June 2018

VIBRATION IS A HIGHLY-RELEVANT HEALTH RISK IN CONSTRUCTION

Presentation title | Month 00, 201X 3

• Most handheld power tools transmit

vibration to hands and arms

• Vibration magnitude is measured in m/s2

• Too much exposure can lead to Hand-

Arm Vibration Syndrome (HAVS) and

Carpal Tunnel Syndrome, affecting the

nerves, blood vessels, muscles and joints

of the hand, wrist and arm

• Progressive disease severely affecting

quality of life through pain and lack of grip

strength

• Around 700 new claims per year in the

UK

• Employer is responsible to manage daily

exposure risk to employees

• Fines can be imposed on companies that

do not correctly manage exposure

• Exposure is managed through the daily

allowable amount of vibration exposure,

linked to EAV (Exposure Activation Value),

below which no action needed, and ELV

(Exposure Limit Value), above which not

further vibration exposure is allowed

HAVS MANAGEMENT: M/S2 CANNOT BE CONSIDERED ON ITS OWN; PERFORMANCE ALSO HAS TO BE TAKEN INTO ACCOUNT

Presentation title | Month 00, 201X 4

• Vibration magnitude is measured on the

tool through sensors embedded in the

handles in three locations

• At Hilti, triaxial vibration is measured

according to the European Standard EN

60745-2

• HSE, UK's workplace health & safety

regulator, publishes a HAVS calculator

which gives the time it takes for a tool of x

m/s2 to reach EAV and ELV

• 'HAVS points' are used to account for a

mix of daily tools used, with EAV and ELV

corresponding to 100 resp. 400 points

• Higher m/s2 doesn’t always mean higher

risk!

• Performance is a key determinant in how

fast the job can be done, esp. within the

allowed time to EAV or ELV

• E.g. a drill with slightly higher m/s2 and

much higher performance than another,

could incur less HAVS points per hole!

A LOW M/S2 VIBRATION FIGURE IS NOT A GUARANTEE OF THE BEST TOOL FOR THE JOB

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91.5cm

198.1cm

25cm

The following shows just how much the correct conventional methods can

reduce vibration exposure

• The application shown requires that 0.5 cubic metres of concrete be removed, with a depth of 25

cm, hand held sawing is not an option, so the process would involve a handheld wall breaker.

• Current selection often considers a tool's weight class and its m/s2 value, but often not its

overall performance

• Using only these factors, a user would set out with a TE 700, as at first glance, it meets the

requirements of lower m/s2

Tool TE 700-AVR TE 800-AVR

Weight class 8.0Kg 10kg

Triaxle vibration values 6.5 m/s2 8.0 m/s2

Material to remove 450,450 cm3 450,450 cm3

Chiselling performance 1200 cm/3 2500 cm/3

Time to complete job 6 h 15 mins 3 h 0 mins

Time to EAV 1 h 11 mins 47 mins

Exposure points 529 384

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2

When tool performance is factored in, the story changes: the higher

vibration TE 800 finishes the application 50% quicker and with 27%

less vibration exposure

The other significant benefit is the fact that overall user fatigue would be

reduced, due to the reduced time on the tool: the TE 800 user would lift

1200kg less to complete the job*.

3* Based on lifting the tool once every minute

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2

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AT HILTI, WE PUBLISH A TOOL SELECTOR THAT FACTORS IN PERFORMANCE AND EASES TOOL SELECTION

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Accessory

HSE points per

application

Dust removal Noise values Vibration level Base material

Productivity data

Tool

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AGENDA

1.0 Introduction to vibration and how Hilti helps manage the risk

2.0 Hilti's approach to reducing vibration exposure

7E1 Pricing | Update Pricing GB Sales & Marketing Meeting | June 2018

IMPROVE, MINIMISE & REMOVE: HILTI'S 3 STAGES TO REDUCING VIBRATION EXPOSURE

Improve : selecting the best tool and

consumable for the job

Minimise : alternative methods

significantly reduce exposure

Remove : design out vibration, remove

exposure completely

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STAGE 1: TOOL AND ACCESSORY OPTIMISATION…

Balfour Beatty HAVS Group presentation 28.6.2018

• High-performance accessories reduce time on the job and thus

HAVS exposure

• Drill bits with wear marking to keep productivity high

Tools Accessories

At Hilti, tools and accessories are developed together as a system

Springs and plates that

isolate the internal

mechanism from the user

Mass damper and

decoupled handle

reduce vibration

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…WITH DUST EXTRACTION FURTHER ABLE TO REDUCE VIBRATION EXPOSURE

-27%

-26%

ChiselingDrilling

with TE DRS-Y

without DRS

Tool vibration (m/s2) User vibration exposure (%)

100.0100.0Daily

limit

-47%-45%

ChiselingDrilling

Over-

proportional

reduction in

vibration

exposure

due to

higher

productivity

* source: Hilti internal test acc. EN 60745-2-6, based on a 6kg combi hammer

~80% longer

daily work

time

STAGE 2: ALTERNATIVE METHODS FURTHER OFFERS A STEP-CHANGE IN VIBRATION REDUCTION

Drilling Breaking Drilled Fixings

Selecting the correct tool / conventional method can take us some way on the journey to reducing vibration exposure;

however, especially for medium-to-large applications, innovative solutions such as diamond drilling, sawing and direct

fastening offer major reductions in vibration exposure.

Cutting

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Diamond Coring Wire and Track Sawing Track Sawing and Coring Direct Fastening

BELOW SHOWS THE SAME APPLICATION AS BEFORE BUT NOW USING AN ALTERNATIVE METHOD

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Install 12x M16 x 60mm HKD

• Using TE 30-A36

• Trigger time 2 minutes

• HSE points 7

Drill 4x 152mm corner holes

• Using DD 150-U rig mounted

• 9 minutes total drilling time

• HSE points 4

Mount rail for DST 20-CA

• Mounting hardware

• 30 minutes total setup

• HSE points N/A

Complete cuts - DST 20-CA

• Hands free cutting

• 40 minutes cut time

• HSE points N/A

Method Best Conventional

(TE800)

Alternative (DST 20-CA)

Material to remove 450,450 cm3 450,450 cm3

Chiselling performance 2500 cm/3 N/A

Time to complete job 3 h 0 mins 1 h 21 mins

Time to EAV 47 mins N/A

Exposure points 384 11

The alternative method would see a 97% reduction in

vibration exposure.

Although the track saw method involves more steps to

complete, it would take half the time for a single trained

operator.

STAGE 3: REMOVING EXPOSURE WITH SEMI- AND FULLY-AUTOMATED DRILLING RIGS

Balfour Beatty HAVS Group presentation 28.6.2018

• Combine standard items (tool, drill

stand, auto-feed unit) with bespoke

drilling platform (e.g. wagon)

• Modular approach

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https://www.youtube.com/watch?v=cqyZPj28dk8