IS 15836-2: Ergonomic design for the safety of machinery, Part 2: Principles for determining the dimensions required for access openings

2008·8.5 MB·English

by  Bureau of Indian Standards

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IS 15836-2 (2008): Ergonomic design for the safety of
machinery, Part 2: Principles for determining the
dimensions required for access openings [PGD 15:
Ergonomics]
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IS 15836 (Part 2) : 2008
ISO 15534-2 : 2000

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Indian Standard
ERGONOMIC DESIGN FOR THE SAFETY OF
MACHINERY
PART 2 PRINCIPLES FOR DETERMINING THE DIMENSIONS REQUIRED FOR
ACCESS OPENINGS
ICS 13 110: 13 180
@BJS2008
BUREAU OF IN DIAN STANDARDS
MANAK BHAVAN. 9 BAHADUR SHAH ZAFAR MARG
NEW DELHI 110002
August2008 PriceGroup9
ErgonomicsSectionalCommittee,PG 15
NATIONALFOREWORD
ThisIndian Standard(Part 2) which is identical with ISO 15534-2 : 2000 'Ergonomic design for the
safetyofmachinery- Part2:Principlesfordeterminin~th~ dimensions required for access openings'
issuedby the International Organization for Standardlz~tlon (ISO) was ad~pted by the Bureau of
IndianStandardsonthe recommendation ofthe Ergonomics Sectional Committee and approval ofthe
Production andGeneralEngineering DivisionCouncil.
Theotherpartsinthisseriesareasfollows:
Part1 Principles for determining the dimensions required for openings for whole-body
accessintomachinery
Part3 Anthropometricdata
Thisstandardspecifiesthedimension ofopeningsfor whole-body access into machineryasdefined in
ISOrrR 12100-1.Thisstandard has been prepared primarily for non-mobile machinery;there may be
additionalspecificrequirementsfor mobilemachinery.
Dimensions for access openings are based on the values for the 95th percentile, whereas reach
distancesare based on the values for the 5th percentile, in each case the least favourable body
dimensionoftheexpected userpopulation being used as a basis. The same considerations apply to
thelocationofaccessopenings.
Theanthropometricdata given in Part3 ofthis standard originate from static measurements of nude
personsand do not take into account body movements, clothing, equipment, machinery-operating
conditionsorenvironmentalconditions.
Thisstandardshowshow to combine theanthropometric data with suitable allowances to take these
factorsinto account.It provides the dimensions to which values given in Part 3 of this standard are
applicable. Valueforadditional spacerequirements aregiven in Annex A.
ThetextofISOStandardhasbeenapprovedas suitablefor publication as an Indian Standard without
deviations. Certain conventions are, however, not identical to those used in Indian Standards.
Attentton isparticularlydrawn 10thelollowinq;
a) Whereverthewords'InternationalStandard' appearreferring tothis standard,theyshould
bereadas'IndianStandard'.
b) Comma (,) has been used as a decimal marker, while in Indian Standards, Ihe current
practiceIStouseapoint(.)asthedecimal marker.
Thetechnicalcommittee responsible forthe preparation of this standard has reviewed the provisions
of the lollowing International Standards referred in this adopted standard and has decided that they
areacceptablelor useinconjunction withthisstandard:
InternationalStandard
Title
IsorTR12100-1 :1992
Safety of machinery - Basic concepts, general principles for design
Part 1:Basicterminology, methodology (EN 292-1:1991)
ISO13852:1996 Safely of machinery - Safely distance to prevent danger zones being
reachedbytheupperlimbs (EN294 :1992)
For the ourpose of decrdinq whether a particular requirement of this standard is complied with. the
frnalvalue,observedorcalculated.expressing the result of a test or analysis,shall be rounded oHin
accordance WIth IS 2 : 1960 'Rules for rounding oH numerical values (revised)'. The number of
slgOlflcantplaces retained In the rounded oftvalue should be the same as that of the specified value
In thIsstandard.
IS15131(Part 2): 2001
ISO15534-2: 2000
Indian Standard
ERGONOMIC DESIGN FOR THE SAFETY OF
MACHINERY
PART2 PRINCIPLES FOR DETERMININGTHE DIMENSIONSREQUIRED FOR
ACCESSOPENINGS
1 Scope
This part of ISO 15534 specifies the dimensions 01 openings lor access Into machinery as defined In
ISOITR 12100-1. lt provides the dimensions to whIChthe values given In ISO 15534-3 are apphcable. Values lor
additional space requirements are given in annex A.Thrspart 01ISO 15534 has been prepared pnmanlylor non
mobile machinery;there maybe addlltonalspecmcrequirementslor mobile machinery.
Dimensions lor access openings are based on the values lor the 95th percennte. whereas reach distances are
based on the values for the 5th percentile.In each case the least lavourable bodydimenSIon 01the eJtPeCted user
population being used asabasis.The sameconsiderationsapplyto the tocanon of accessopenings.
The anthropometric data given In ISO 15534·3 originate from stat-e measurements of nude persons and do not
lake into account body movements. clothing. equipment. machinery-operating condmons or envrronrnentat
conditions.
This part 01 ISO 15534 shows how to combine the anthropometric data With SUItable allowances to take these
factors intoaccount.
Situationswherepeopleare to beprevented from reaching ahazardaredealtWithInISO 13852.
2 Normativereferences
The fOllowingnormaltvedocumentscontain provisionswhICh,through referenceIntrustext. consntute provisioos of
this part 01150 15534.For dated references. subsequentamendmentsto.or revrsions of.any of these pubbcations
do not apply. However,parties to agreements based on this part C)f ISO 15534 are encouraged to Invesltgate the
possibility of applying the most recent edrtions of the normatrve documents IndICated below. For undated
references, the latest edition of the normative document referred to apphes. Members of ISO and lEG maintain
registersofcurrentlyvalid InternationalStandards.
ISOITR 12100-1:1992. Safety of machinery - BasIC concepts. general pnncipJes for design - Part 1: BasIC
terminology. methodology.(EN 292-1:1991)
ISO 13852:1996. Safetyofmachinery - Safety distances to prevent danger zones bemg reached by the upper
limbs.(EN294:1992)
ISO 15534·3:2000.ErgonomicdesIgnfor thesafetyofmachinery- Part3:AnthropometflCdata.

1
IS15836(Perl2):2008
ISO15534-2:2000
3 Generalrequirements
Operations requiring reach through minimum-access openings .are Ii~ely to be less ~fficient, less,sale and less
healthythanworkingwithunrestrictedacc~ss.Th~refore, beforeInstalling ac~ess operunqs otheroptions shouldbe
considered,e.g.possibility toopen machinery, withdrawal of parts for repair. This ISparticularly Important where
thetaskdemandsIrequentaccess.
WPlenaccessopeningscannotbeavoided,thefollowing criteria are ofparticularsignificance:
a) easeofaccessisinfluencedby
thedemands01thetask,e.g.posture,nature andspeed ofmovement,lines of sight, applicationoflorce,
the locationof the access opening relative to the position of the person, e.g. convenient height abov~
floor, within easy reach, sufficient space outside to allow adoption of a comlortable posture, sufficient
spaceinsidetoallowperformanceofthetask,
frequencyanddurationoftask,
whethertoolsarebeingcarried,e.g.formaintenanceor repair purposes,
length01 accessopenings,e:g.through a relatively thin wall (wall of a vessel) or through a channel-type
opening,
whether additional equipment, such as personal protective equipment (including protective clothing), or
portablelighting,isbeingcarriedorwom,
the type 01 clothing, e.g.light or heavy clothing, bare hands or thick gloves, bare headed or wearing a
helmet;
b) environmentalconditions(e.g.darkness, heat,noise, moisture);
c) levelofriskduringthetask.
Therefore: in additionto the anthropometric data in each case, allowances shall be provided lor the respective
openingdimensIOnSandreachdistances,takinginto account the above criteria.
The applications on how to apply this part of ISO 15534 in practice are contain~d in annexA. conceming
allowances,andInannexB,concemingthepositionofaccess openings.
AnnexCgivesinformationontheuseofsymbolsfordimensionsand anthropometricmeasurements.

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IS 15836(Par12) : 2008
ISO 15534-2 :2000
4 Access openings
An access opening is an openrng through which a person can lean torward, reach forward, or extend the upper
body, (head. arm, hand. a finger or several fingers). leg or foot, to be able to carry out measures dunng work
procedures. such as operating of control actuators. repair dulles or rnorutonnq of processes or displays. See
Figures 1to 12.
This part of ISO 15534does not specify optimum ormens.ons.but minimum dimensrons for the size of the opening
and maximum dirnen.Jons for reach. Wherever possjbte. the baSIC cnnensions tor the openings should be
increased.and the maximumdimensionsfor reach shouldbe decreased.
Symbol
Q,
4.1 Access opening forthe upper :\ = (P95'1) + •
bodyand arms
A Openrng diameter
Elbow-to-elbowbreadth
Allowance
----
'.,~ j."
,
I •
; <;_ 1 ') ,
I
III1 I(II\ IIr~J
I II I
I I I I
I I I I
1 I 1 I
1 I I I
I I I I
I ,I I ,I
t I I ,
I I 1,
I I I
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'-'
A
Figure1

1) P95:95thpercentile01the8JlPeCteduserpoputallon
3
IS15836(Part2):2008
ISO 1~2 :2000
Symbol Explanationofmeasurement
4.2 Accessopeningfortheheadas Thistype01access shouldbe avoided
f8rastheshouldersforinspection whereverpossible
taka
A=c3(P95)+.r
A Openingdiameter
C3 Head lengthfromtipofnose
Allowance
A
F"tgure2
4.3 Accessopeningforbotharms A=a, (P95) +x
(either forwardordownward)
B=d, (P95) +y
C=1, (PS)
A Openingbreadth
B Openingwidth
C Opening depth
a,
Elbow-to-elbow breadth
d, Upper-armdiameter
11 Operating-armlength
x Breadthallowance
y Widthallowance
Figure3
IS15836(Pert 2) :2001
ISO15534-2: 2000
Symbol Explan.tionofmeasurement
- - - - -I
4.4 Accessopeningforbothlower A =2J2(P95) +.l
arms upto theelbow(eitherforward =
or downward) H J2(P95) + \
='2
C (P5)
Opemngbreadth
8 Opening width
C Openingdepth
d Lower-armdaameter
2
'2 Forearm reach
Breadthallowance
.' Width allowance
A
Figure4

5