EN ISO 10551:2001
(Main)Ergonomics of the thermal environment - Assessment of the influence of the thermal environment using subjective judgement scales (ISO 10551:1995)
Ergonomics of the thermal environment - Assessment of the influence of the thermal environment using subjective judgement scales (ISO 10551:1995)
Covers the construction and use of judgement scales for use in providing reliable and comparative data on the subjective aspects of thermal comfort or thermal stress.
Ergonomie des Umgebungsklimas - Beurteilung des Einflusses des Umgebungsklimas unter Anwendung subjektiver Bewertungsskalen (ISO 10551:1995)
Diese Internationale Norm befasst sich mit dem Aufbau und der Anwendung von Bewertungsskalen
(Skalen für die thermische Wahrnehmung, thermische Behaglichkeit, thermische Bevorzugung,
Erhebungsbogen für Annehmbarkeit und Toleranzskala), um zuverlässige und vergleichbare Daten zu den
subjektiven Aspekten von thermischer Behaglichkeit oder thermischer Belastung zu erhalten.
Ergonomie des ambiances thermiques - Evaluation de l'influence des ambiances thermiques à l'aide d'échelles de jugements subjectifs (ISO 10551:1995)
La présente Norme internationale couvre la construction et l'utilisation des échelles de jugement (échelles de perception thermique, de confort thermique, de préférence thermique, expression de l'acceptabilité et échelle de tolérance) servant à fournir des données fiables et comparables relatives à l'aspect subjectif du confort thermique ou de la contrainte thermique.
Ergonomija toplotnega okolja - Ocenjevanje vpliva toplotnega okolja z uporabo subjektivnih lestvic za ocenjevanje (ISO 10551:1995)
General Information
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Standards Content (Sample)
SLOVENSKI STANDARD
01-september-2002
1DGRPHãþD
SIST ISO 10551:2001
Ergonomija toplotnega okolja - Ocenjevanje vpliva toplotnega okolja z uporabo
subjektivnih lestvic za ocenjevanje (ISO 10551:1995)
Ergonomics of the thermal environment - Assessment of the influence of the thermal
environment using subjective judgement scales (ISO 10551:1995)
Ergonomie des Umgebungsklimas - Beurteilung des Einflusses des Umgebungsklimas
unter Anwendung subjektiver Bewertungsskalen (ISO 10551:1995)
Ergonomie des ambiances thermiques - Evaluation de l'influence des ambiances
thermiques a l'aide d'échelles de jugements subjectifs (ISO 10551:1995)
Ta slovenski standard je istoveten z: EN ISO 10551:2001
ICS:
13.180 Ergonomija Ergonomics
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD
EN ISO 10551
NORME EUROPÉENNE
EUROPÄISCHE NORM
April 2001
ICS 13.180
English version
Ergonomics of the thermal environment - Assessment of the
influence of the thermal environment using subjective judgement
scales (ISO 10551:1995)
Ergonomie des ambiances thermiques - Evaluation de Ergonomie des Umgebungsklimas - Beurteilung des
l'influence des ambiances thermiques à l'aide d'échelles de Einflusses des Umgebungsklimas unter Anwendung
jugements subjectifs (ISO 10551:1995) subjektiver Bewertungsskalen (ISO 10551:1995)
This European Standard was approved by CEN on 19 January 2001.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national
standards may be obtained on application to the Management Centre or to any CEN member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,
Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.
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© 2001 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 10551:2001 E
worldwide for CEN national Members.
Page 2
CORRECTED 2001-09-19
Foreword
The text of the International Standard from Technical Committee ISO/TC 159 "Ergonomics" of the
International Organization for Standardization (ISO) has been taken over as an European Standard by
Technical Committee CEN/TC 122 "Ergonomics", the secretariat of which is held by DIN.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by October 2001, and conflicting national standards shall
be withdrawn at the latest by October 2001.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the
following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic,
Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands,
Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom.
Endorsement notice
The text of the International Standard ISO 10551:1995 has been approved by CEN as a European
Standard without any modification.
NOTE Normative references to International Standards are listed in annex ZA (normative).
Page 3
Annex ZA
(normative)
Normative references to international publications
with their relevant European publications
This European Standard incorporates, by dated or undated reference, provisions from other
publications. These normative references are cited at the appropriate places in the text, and the
publications are listed hereafter. For dated references, subsequent amendments to or revisions of any
of these publications apply to this European Standard only when incorporated in it by amendment or
revision. For undated references the latest edition of the publication referred to applies (including
amendments).
NOTE Where an International Publication has been modified by common modifications, indicated by
(mod.), the relevant EN/HD applies.
Publication Year Title EN Year
ISO 7243 1989 Hot environments - Estimation of the heat stress EN 27243 1993
on working man, based on the WBGT-index
(wet bulb globe temperature)
ISO 7726 1985 Thermal environments - Instruments and methods EN 27726 1993
for measuring physical quantities
ISO 7730 1994 Moderate thermal environments - Determination EN ISO 7730 1995
of the PMV and PPD indices and specification of
the conditions for thermal comfort
ISO 8996 1990 Ergonomics - Determination of metabolic heat EN 28996 1993
production
ISO/TR 11079 1993 Evaluation of cold environments - Determination ENV ISO 11079 1998
of required clothing insulation (REQ)
INTERNATIONAL
STANDARD
First edition
1995-05-15
Ergonomics of the thermal environment -
Assessment of the influence of the thermal
environment using subjective judgement scales
Ergonomie des ambiances thermiques - Evaluation de I’influence des
ambiances thermiques 2 I’aide d ’khelles de jugemen ts subjectifs
Number of reference
ISO 10551 :1995(E)
ISO 10551:1995(E)
Contents
Page
. . . . . . . . . . . . . .*. 1
1 Scope. . . . . . . . . . . . . . . . . . . . . . . . .
2 Normative references . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . O . . . . . . . . . . . . . . . . . . . . .
3 Symbols . . . . . . . . . . . . . . . . . . . . . . . =. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4 Subjective judgement scales for thermal environments: Principles of
scale construction and conditions of use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Perceptual, evaluation and preferential judgement scales . . . . . . . . . . . . . . . . . .
6 Personal acceptability Statement and tolerante scale . . . . . . . . . . . . . . . . . . . . -.
7 Instructions for repeat enquiries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . .-.*.-.*.
8 Summary of the scales . . . . . . . . . . . . . . .
9 Formats and methods of presentation of the scales -. I . . . . . . . . . .
10 Data analysis and application of the results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Annexes
A Examples of the wording of subjective judgement scales
on thermal conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
B Application of assessment procedure and judgement scales:
Examples, including data analysis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
C Bibliography . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
0 ISO 1995
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced
or utilized in any form or by any means, electronie or mechanical, including photocopying and
microfilm, without Permission in writing from the publisher.
International Organization for Standardization
Case Postale 56 l CH-121 1 Geneve 20 l Switzerland
Printed in Switzerland
ISO 10551:1995(E)
@ ISO
Foreword
ISO (the International Organization for Standardization) is a worldwide
federation of national Standards bodies (ISO member bodies). The work of
preparing International Standards is normally carried out through ISO
technical committees. Esch member body interested in a subject for
which a technical committee has been established has the right to be
represented on that committee. International organizations, governmental
and non-governmental, in liaison with ISO, also take part in the work. ISO
collaborates closely with the International Electrotechnical Commission
(1 EC) on all matters of electrotechnical standardization.
Draft International Standards adopted by the technical committees are
circulated to the member bodies for voting. Publication as an International
Standard requires approval by at least 75 % of the member bodies casting
a vote.
International Standard ISO 10551 was prepared by Technical Committee
I SO/TC 159, Ergonomics, Subcommittee SC 5, Ergonomics of the
physical environment.
Annexes A, B and C of this International Standard are for information only.
ISO 10551:1995(E)
@ ISO
Introduction
The present International Standard forms part of a series of Standards on
the assessment of thermal stress and strain in the work environment.
This series is concerned in particular with:
1) establishing specifications on methods for measuring and estimat-
ing the characteristic physical Parameters of climatic environments,
thermal properties of clothing and metabolic heat production;
2) establishing methods for assessing thermal stress in hot, cold and
temperate environments.
This International Standard proposes a set of specifications on direct
expert assessment of thermal comfort/discomfort expressed by persons
subjected to various degrees of thermal stress during periods spent in
various climatic conditions at their workplace. The data provided by this
assessment will most probably be used to Supplement physical and
physiological methods of assessing thermal loads. The methods belong to
a psychological approach consisting in gathering, as appropriate, the on-
site opinions of persons exposed to the conditions under consideration
(diagnosis) and thus may compiete data provided by predictive approaches
described eisewhere in this series.
The ergonomist who is concerned with the thermal environment of work-
places is able to determine the value of various indices (WCI, PMV and
PPD, WBGT) which will predict the average climatic conditions for thermal
comfort or the average degree of thermal stress suffered by a worker in a
number of general cases. In practice, specific cases often differ from
general cases in ways such as spatial heterogeneities, local differentes,
temporal fluctuations, ciothing arrangements, personal characteristics.
Thus it becomes necessary to suppiement the values proposed in an
initial predictive approach by a direct determination of the subjective
experience which persons at work have of the climatic environment and
of their corresponding personal state, an experience which these persons
tan judge and express. The approach is diagnostic.
These data are not obtained by means of a questionnaire; it is left to the
user to incorporate the scales into a list of more comprehensive or more
specific questions (medical Survey, list of work Stresses), presented in a
form (oral, written; individual, collective) adapted to the particular case and
to the collective Standards (national, professional) in forte.
If persons exposed to thermal environments are to be asked about their
corresponding experiences or information requested on their cultural
attitude in Order to obtain the most appropriate subjective judgement
scales, favourable relationships should first be established between these
persons and the organization responsible, through the persons conducting
the ergonomic investigation.
iv
@ ISO ISO 10551:1995(E)
The thermal environments which lend themselves to the application of
subjective judgement scales relate to conditions which differ to a mode-
rate degree from thermal neutrality. Under extreme conditions, physical
and physiological assessment methods of the thermal load shall be
preferred, provided that their results tan be used as criteria for a decision.
In particular, tolerante Iimits for thermal load cannot be confidently based
on subjective judgements and have to be decided in view of accepted
health risk criteria. More specific conditions for applying the judgement
scales will be made clear in connection with each of them.
The subjective nature of the data obtained using judgement scales leads
some experts to doubt their benefit and prefer “objective ”, physical or
physiological data. The question of the validity of subjective data as
regards thermal environments tan be viewed in two distinct ways:
a) The first approach corresponds to the following question:
To what extent is the information provided by these data the Same as that
provided by “objective” data?
The relation which may or may not exist between objective and subjective
data will be examined with the aim of substituting collection of the former
by that of the latter, which are more easily obtained. This International
Standard is not concerned with this approach, however interesting it may
be once the relation has been established.
b) The second approach corresponds to the following question:
What is the intrinsic value of the data supplied by these scales?
The opinions held by persons about the thermal environments in which they
work have a value in themselves. lt is up to the ergonomist whether or not to
take them into account. The reputation of these data for lack of reliability does
not justify dismissing them out of hand. The aim of this International Standard
is precisely to improve their reliability by specifying the appropriate tools to use
in collecting them and the requirement for using them.
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