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Implementationof|
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SafetyofmachineryÐ|
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thelowerlimbs|
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TheEuropeanStandardEN811:1996hasthestatusofa|
BritishStandard|
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NOCOPYINGWITHOUTBSIPERMISSIONEXCEPTASPERMITTEDBYCOPYRIGHTLAW|
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BSEN811:1997
Committeesresponsibleforthis
BritishStandard
ThepreparationofthisBritishStandardwasentrustedtoTechnicalCommittee
MCE/3,Safeguardingofmachinery,uponwhichthefollowingbodieswere
represented:
AdvancedManufacturingTechnologyResearchInstitute
AgriculturalEngineersAssociation
BritishCableMakersConfederation
BritishCompressedAirSociety
BritishRobotAssociation
BritishRubberManufacturersAssociationLtd.
BritishTextileMachineryAssociation
ConsumerPolicyCommitteeofBSI
HealthandSafetyExecutive
LossPreventionCouncil
MachineToolTechnologiesAssociation
MachinerySafetyEquipmentManufacturersAssociation
PICON
SocietyofLaundryEngineersandAlliedTradesLimited
TradesUnionCongress
ThisBritishStandard,having
beenpreparedunderthe
directionoftheEngineering
SectorBoard,waspublished
undertheauthorityofthe
StandardsBoardandcomesinto
effecton
15March1997
ÓBSI1997
Amendmentsissuedsincepublication
ThefollowingBSIreferences
relatetotheworkonthis
standard:
CommitteereferenceMCE/3
Draftforcomment92/79446DC
ISBN0580271145:.
BSEN811:1997
Contents
Page
CommitteesresponsibleInsidefrontcover
Nationalforewordii
Foreword2
TextofEN8113
ÓBSI1997i:.
BSEN811:1997
Nationalforeword
ThisBritishStandardhasbeenpreparedbyTechnicalCommitteeMCE/3,andisthe
EnglishlanguageversionofEN811:1996,publishedbytheEuropeanCommitteefor
Standardizaton(CEN).
ThisBritishStandardispublishedunderthedirectionoftheEngineeringSectorBoard
whoseTechnicalCommitteeMCE/3hastheresponsibilityto:
±aidenquirerstounderstandthetext;
±presenttotheresponsibleinternational/Europeancommitteeanyenquiriesonthe
interpretation,orproposalsforchange,andkeepUKinterestsinformed;
±monitorrelatedinternationalandEuropeandevelopementsandpromulgatethem
intheUK.
,aswellasoverseasstandards,areavailablefrom
CustomerServices,BSI,389ChiswickHighRoad,LondonW44AL.
Cross-references
PublicationreferredtoCorrespondingBritishStandard
EN292-1:1991BSEN292-1:1991SafetyofmachineryÐBasicconcepts,
generalprinciplesfordesignÐPart1:Basicterminology,
methodology
EN294:1992BSEN294:1992SafetyofmachineryÐSafetydistancesto
preventdangerzonesbeingreachedbytheupperlimbs
EN1050BSEN1050:SafetyofmachineryÐRiskassessment
CompliancewithaBritishStandarddoesnotofitselfconferimmunity
fromlegalobligations.
Summaryofpages
Thisdocumentcomprisesafrontcover,aninsidefrontcover,pagesiandii,theEN
titlepage,pages2to8,aninsidebackcoverandabackcover.
iiÓBSI1997:.
EUROPEANSTANDARDEN811
NORMEEUROPEÂENNE
EUROPAÈISCHENORMOctober1996
Descriptors:Safetyofmachinery,dangerousmachines,accidentprevention,hazards,humanbody,lowerlimbs,dangerousareas,
distance,dimensions
Englishversion
SafetyofmachineryÐ
Safetydistancestopreventdangerzonesbeingreachedbythe
lowerlimbs
SeÂcuriteÂdesmachinesÐSicherheitvonMaschinenÐ
DistancesdeseÂcuriteÂpourempeÃcherl'atteintedesSicherheitsabtaÈndegegendasErreichenvon
zonesdangereusesparlesmembresinfeÂrieursGefahrstellenmitdenunterenGliedmaûen
ThisEuropeanStandardwasapprovedbyCENon1996-08-
boundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatethe
conditionsforgivingthisEuropeanStandardthestatusofanationalstandard
withoutanyalteration.
Up-to-datelistsandbibliographicalreferencesconcerningsuchnationalstandards
maybeobtainedonapplicationtotheCentralSecretariatortoanyCENmember.
ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).
Aversioninanyotherlanguagemadebytranslationundertheresponsibilityofa
CENmemberintoitsownlanguageandnotifiedtotheCentralSecretariathasthe
samestatusastheofficialversions.
CENmembersarethenationalstandardsbodiesofAustria,Belgium,Denmark,
Finland,France,Germany,Greece,Iceland,Ireland,Italy,Luxembourg,Netherlands,
Norway,Portugal,Spain,Sweden,SwitzerlandandUnitedKingdom.
CEN
EuropeanCommitteeforStandardization
ComiteÂEuropeÂendeNormalisation
EuropaÈischesKomiteefuÈrNormung
CentralSecretariat:ruedeStassart36,B-1050Brussels
Ó1996AllrightsofreproductionandcommunicationinanyformandbyanymeansreservedtoCENandits
members
:1996E:.
Page2
EN811:1996
ForewordContents
ThisEuropeanStandardhasbeenpreparedby
TechnicalCommitteeCEN/TC114,SafetyofPage
machinery,
ThisEuropeanStandardshallbegiventhestatusofaIntroduction3
nationalstandard,eitherbypublicationofanidentical1Scope3
textorbyendorsement,atthelatestbyApril1997,
andconflictingnationalstandardsshallbewithdrawn2Normativereferences3
ThisEuropeanStandardhasbeenpreparedundera4Safetydistancestopreventaccess3
mandategiventoCENbytheEuropeanCommission
andtheEuropeanFreeTradeAssociation,and5Distancestoimpedefreeaccess6
supportsessentialrequirementsofEUDirective(s).Annexes
ForrelationshipwithEUDirective(s),seeinformativeA(informative)Impedingfreemovement
annexZA,
ThisEuropeanStandardisaType-B1standardinZA(informative)ClausesofthisEuropean
AccordingtotheCEN/CENELECInternalRegulations,requirementsorotherprovisionsof
thefollowingcountriesareboundtoimplementthisEUDirectives8
EuropeanStandard:Austria,Belgium,Denmark,
Finland,France,Germany,Greece,Iceland,Ireland,
Italy,Luxembourg,Netherlands,Norway,Portugal,
Spain,Sweden,SwitzerlandandUnitedKingdom.
ÓBSI1997:.
Page3
EN811:1996
IntroductionThedistancestoimpedefreeaccessrelatetothe
heightuptotheprotectivestructureandreduceriskto
InaccordancewithEN292-1,ingeneral,machineryispersonsbylimitingthefreemovementofthelower
saidtobesafeifitispossiblethatthemachinerycanlimbs.
performitsfunctiontobetransported,installed,
adjusted,maintained,dismantledanddisposedofIfpersonsbelow14yearsofagearetobetakeninto
undertheconditionsofitsintendedusewithoutaccountitisnotrelevanttoestablishvaluesotherthan
Onemethodofeliminatingorreducingriskscausedbypreventdangerzonesbeingreachedbytheupperlimbs
machineryistomakeuseofsafetydistancesderivedfromtable5ofEN294:1992willapply.
canoccur,
canbeachieved.
±trytouseafoottocleanoutdischargeand/orfeed
openingsor
±operatepedestriancontrolledmachinery2Normativereferences
ThisstandardspecifiessafetydistancesonlyfortheThisEuropeanStandardincorporatesbydatedor
,provisionsfromotherpublications.
appropriateplacesinthetextandthepublicationsare
,subsequent
(seeclause4)anddistancestoimpedefreeaccessamendmentstoorrevisionsofanyofthese
(seeclause5)anumberofaspectshavetotakenintopublicationsapplytothisEuropeanStandardonly
consideration,suchas:
±reachingsituationsofthelowerlimbsoccurringundatedreferencesthelatesteditionofthepublication
whenmachineryisbeingused;referredtoapplies.
±anthropometricdatatakingintoaccountethnic
groupslikelytobefoundinEuropeancountries;EN292-1SafetyofmachineryÐBasicconcepts,
generalprinciplesfordesignÐ
±bio-mechanicalfacts,suchascompressionandPart1:Basicterminology,methodology
stretchingofpartsofthehumanbodyandlimitsof
jointrotation;EN294:1992SafetyofmachineryÐSafetydistances
±
bytheupperlimbs
Iftheseaspectsarefurtherdevelopedthecurrentstate
oftheart,reflectedinthisstandard,couldbeEN1050SafetyofmachineryÐRiskassessment
improved.
3Definitions
1ScopeForthepurposesofthisstandardthedefinitionsgiven
ThisEuropeanStandardestablishesvaluesforsafetyinEN292-1andEN294apply.
distancestopreventaccessanddistancestoimpede
freeaccessbythelowerlimbsofpersonsof14years4Safetydistancestopreventaccess
thisgroupofpersons.
Thedistancesapplywhenadequatesafetycanbe
achievedbydistancealoneandwhenaccessbytheThesafetydistanceshavebeenderivedbymakingthe
upperlimbsisnotforeseeableaccordingtotheriskfollowingassumptions:
assessment.±Theprotectivestructuresandanyopeningsin
againstcertainhazards,forexampleradiationandemissionoffurtherconsiderationshallbegiventoachieve
.
necessary.
±Safetydistancesaremeasuredfromthesurface
Thesafetydistancestopreventaccessrelatetorestrictingthebodyortherelevantpartofthebody.
openingsandprotectthosepersonstryingtoreach
dangerzonesundertheconditionsspecifiedforthe
foreseeableapproachtodangerzonescanoccurwhile
personstrytouseafoottocleanoutdischargeand/or
feedopeningsoroperatepedestriancontrolled
machinery.
ÓBSI1997:.
Page4
EN811:1996
Determinationoftherequiredsafetydistanceforlimbs
reachingdangerzonesshalldependonariskThesafetydistancessrgivenintable1applyto
assessment(seeEN292-1andprEN1050).personsreachingthroughopeningsinanattemptto
ThisEuropeanStandardshallbeusediftheriskreachadangerzone.
lowerlimbs,thenforagivenopeningthelargestsafetyThedimensioneofopeningscorrespondstotheside
distancegivenintable1ofthisstandardorintable4ofofasquareopening,thediameterofaroundopening
EN294:.
Slotopenings>180mmandsquareorroundopenings
>240mmwillallowaccessforthewholebody.
Thevaluesgivenintable1areindependentofwhether
clothingorfootwearisbeingworn.
Table1
Dimensionsinmm
PartoflowerIllustrationOpeningSafetydistancesr
limb
SlotSquareorround
Toetipe#500
Toe5<e#15$100
15<e#35$801)$25
Foot35<e#60$180$80
60<e#80$6502)$180
ÓBSI1997:.
Page5
EN811:1996
Table1.(concluded)
Dimensionsinmillimetres
Legupto80<e#95$11003)$6502)
knee
Legupto95<e#180$11003)$11003)
crotch
180<e#240notadmissible$1003)
1)Ifthelengthoftheslotopeningis#75mmthedistancecanbereducedto$50mm.
2)Thevaluecorrespondsto`Leguptoknee'.
3)Thevaluecorrespondsto`Leguptocrotch'.
ÓBSI1997:.
Page6
EN811:1996
IncaseofirregularopeningsthefollowingstepsshallAprotectivestructurecanbeusedtorestrictthefr