Non binding guide to good practice for implementing Directive

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D.4 EXPOSURE POINTS SYSTEMHand-arm vibration exposure management can besimplifi ed by using an exposure “points” system. For anytool or process, the number of exposure points accumulatedin an hour (PE,1h in points per hour) can be obtained fromthe vibration magnitude ahv in m/s² using:In general the number of exposure points, P E, isdefi ned by:P E,1h= 2a 2 hvExposure points are simply added together, so you canset a maximum number of exposure points for any personin one day.The exposure scores corresponding to the exposureaction and limit values are:• exposure action value (2.5 m/s²) = 100 points;• exposure limit value (5 m/s²) = 400 points.Acceleration (m/s 2 )2019.51918.51817.51716.51615.51514.51413.51312.51211.51110.5109.598.587.576.565.554.543.532.5676360575451484543403835333028262422201817151412119876543322120019018017016015514513513012011510598918578726661555045413632282521181513108653400380360340325305290270255240225210195180170155145130120110100908172645649423630252016129680076072068565061558054551048045042039036534031529026524022020018016014513011598857261504132251813Where a hvis the vibration magnitude in m/s² andT is the exposure time in hours.Alternatively Figure D.3 gives a simple methodfor looking up the exposure points.The daily exposure A(8), can be calculated fromthe exposure point using:FIGURE D.3 EXPOSURE POINTS TABLE (ROUNDED VALUES).1600150014501350130012501150110010009609008407857306756255755304854404003603252902552251951701451201008164493625240023002150205019501850175016501550145013501250120011001000940865795725660600540485435385340295255215180150120967454383200305029002750260024502300220020501900180017001550145013501250115010509708808007206505805104503903402902402001601309872504000380036003400325030502900270025502400225021001950180017001550145013001200110010009058107256405654904253603052502051601259063480045504350410039003700345032503050290027002500235022002050190017501600145013001200110097086577067559050543036530024519014511075640061005800550052004900460043504100385036003350315029002700250023002100195017501600145013001150100090078567557548540032525519514580007600720068506500615058005450510048004500420039003650340031502900265024002200200018001600145013001150980845720605500405320245180100 1255m 15m 30m 1h 2h 3h 4h 5h 6h 8h 10hDaily Exposure timePART I Guide to good practice on Hand-Arm Vibration – ANNEXES A-H41
D.5 TRAFFIC LIGHT SYSTEMNon binding guide to good practice for implementing Directive 2002/44/EC (Vibrations at Work)Some employers, working with machine manufacturersand suppliers, have developed a green / amber / red“traffi c light” system, where each tool is clearly markedwith a hand-arm vibration colour coding, dependenton the expected in-use vibration magnitude of eachmachine, one example of this coding scheme is illustratedin Table D.1.Workers are given training in the colour-coding scheme,so that they can select vibration tools at a glance andknow how long they can use the tool.The success of the traffi c light system is dependent onthe quality of data used to determine the colour ratingof each machine. The traffi c light scheme may bebased on measurements or manufacturer’s declarationof vibration emission. If the vibration emission value isused, it should be multiplied by a factor of between 1and 2, to account for uncertainty in the results from thestandardised emission tests (see Chapter 2.3.1).The use of a ‘green’ machine indicates that exposuresare likely to be below the exposure action or limit value.These exposures must not be assumed to be “safe”. Theremay be a risk of hand-arm vibration injury for exposuresbelow the exposureaction value andother managementcontrols must beused to ensure thatworkers are trainedto understand andoperate the systemcorrectly, that thesystems are actuallycorrectly used andthat workers at risk do not develop symptoms of handarmvibration syndrome.TABLE D.1 EXAMPLE OF COLOUR CODING SCHEME FOR TRAFFIC-LIGHT SYSTEMColour code Time to reach EAV (2.5m/s²) Time to reach ELV (5m/s²)Red Less than 30 mins Less than 2 hoursAmber 30 minutes to 2 hours 2 to 8 hoursGreen More than 2 hours More than 8 hours42
Page 1 and 2: Non binding guideto good practice f
Page 3 and 4: Neither the European Commission nor
Page 5 and 6: CONTENTSAcknowledgments ...........
Page 7 and 8: PART I Guide to good practiceon Han
Page 9 and 10: 3.4 MONITORING AND REASSESSMENT....
Page 11: Non binding guide to good practice
Page 15 and 16: TABLE 1 SOME QUESTIONS TO HELP DECI
Page 17 and 18: 2.2 DETERMINING EXPOSURE DURATIONNo
Page 19 and 20: 2.3.2 Use of other data sources2.3.
Page 21 and 22: 2.4 CALCULATING DAILY VIBRATION EXP
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Page 30 and 31: CHAPTER 4 HEALTH SURVEILLANCEHealth
Page 32 and 33: ANNEX A Summary of responsibilities
Page 34 and 35: FIGURE B.3 EXAMPLES OF VIBRATION MA
Page 36 and 37: ANNEX C Health risks, signs and sym
Page 38 and 39: FIGURE D.1 DAILY EXPOSURE GRAPH16Vi
Page 42 and 43: ANNEX E Worked ExamplesE.1 WHERE JU
Page 44 and 45: ANNEX F Health Surveillance Techniq
Page 46 and 47: ANNEX G GlossaryHand-arm vibrationT
Page 48 and 49: ISO 14835-1:2005 Mechanical vibrati
Page 50 and 51: HSE (1998) Hard to handle: Hand-arm
Page 52: Non binding guide to good practice
Page 55 and 56: TABLE OF CONTENTSCHAPTER 1 INTRODUC
Page 57 and 58: CHAPTER 1 INTRODUCTIONEU Directive
Page 59: Whole-bodyVibration at workFIGURE 1
Page 64 and 65: FIGURE 2 EXAMPLES OF VIBRATION MAGN
Page 66 and 67: 2.3 DETERMINING VIBRATION MAGNITUDE
Page 71 and 72: CHAPTER 3 AVOIDING OR REDUCING EXPO
Page 73 and 74: Anyone supplying machinery for use
Page 75: The seat suspension system must als
Page 80 and 81: ANNEX B What is vibration?Non bindi
Page 82 and 83: B.5 WHAT INSTRUMENTATION SHOULDBE U
Page 84 and 85: ANNEX D Tools for calculating daily
Page 86 and 87: FIGURE D.2 NOMOGRAM FOR A(8) VALUES
Page 88 and 89: ANNEX E Daily exposure Worked examp
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E.3 DAILY EXPOSURE: VDV, WHERE THER
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E.5 DAILY EXPOSURE: A(8), USING THE
Page 94 and 95:
ANNEX F Health Surveillance Techniq
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ANNEX H BibliographyNon binding gui
Page 98 and 99:
Britain: fi ndings from a national
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INDEXAA(8) ........................
Page 102 and 103:
DIRECTIVE 2002/44/EC OF THE EUROPEA
Page 104 and 105:
at the choice of the Member State c
Page 106 and 107:
outcome of the risk assessment prov
Page 108 and 109:
easons, of the transitional arrange
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How to obtain EU publicationsOur pr
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Non binding guide to good practice for implementing Directive

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