SIST-TP ISO/TR 11071-2:2012

TECHNICAL ISO/TR
REPORT 11071-2
Second edition
2006-04-15
Comparison of worldwide lift safety
standards —
Part 2:
Hydraulic lifts (elevators)
Comparaison des normes mondiales de sécurité des ascenseurs —
Partie 2: Ascenseurs hydrauliques

Reference number
©
ISO 2006
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ii © ISO 2006 – All rights reserved

Contents Page
Foreword. iv
Introduction . v
1 Scope . 1
2 Terminology . 1
3 Basis for lift safety standards development (basic assumptions) . 5
4 Approach to design safety for hydraulic components . 13
5 Driving Machines and jacks (plungers and cylinders). 33
6 Valves, Piping and Fittings . 44
7 Ropes and chains . 59
8 Capacity and loading. 65
9 Spaces and clearances . 75
10 Protection against free-fall, excessive speed and creeping . 78
11 Electrical devices. 83
Annex A (informative) Tabulations . 88
Annex B (informative) References. 113
Annex C (informative) CEN/TC10/WG1 N99. 115

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. Each 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 (IEC) on all matters of electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. 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.
In exceptional circumstances, when a technical committee has collected data of a different kind from that
which is normally published as an International Standard (“state of the art”, for example), it may decide by a
simple majority vote of its participating members to publish a Technical Report. A Technical Report is entirely
informative in nature and does not have to be reviewed until the data it provides are considered to be no
longer valid or useful.
ISO/TR 11071-2 was prepared by Technical Committee ISO/TC 178, Lifts, escalators and moving walks.
This second edition cancels and replaces the first edition (ISO/TR 11071-2:1996), and amendment 1
(ISO/TR 11071-2:1996/Amd. 1:1999), which have been technically revised.
ISO/TR 11071 consists of the following parts, under the general title Comparison of worldwide lift safety
standards:
⎯ Part 1: Electric lifts (elevators)
⎯ Part 2: Hydraulic lifts (elevators)
iv © ISO 2006 – All rights reserved

Introduction
Introduction to 1996 edition
At the 1981 plenary meeting of ISO/TC 178, work was started on a comparison of CEN standard EN 81/1 with
the American, Canadian, and USSR lift safety standards. In 1983, Working Group 4 was officially formed to
carry out the task of preparing cross reference between the relevant sections of these standards and to
analyze the differences on selected subjects. The goal at that time was to prepare a technical report which
would provide reference information to assist national committees when reviewing and revising individual
standards which may initiate a gradual convergence of the technical requirements. In 1984, the study was
expanded to include the Council for Mutual Economic Assistance (CMEA) safety standard. That report,
ISO/TR 11071-1, Comparison of worldwide lift safety standards — Part 1: Electric lifts (elevators), was
published 1990-12-01.
In 1989, the charge to WG 4 was expanded to include hydraulic lifts. Since there was no standard for
hydraulic lifts in the Russian Federation, and the CMEA standard was being phased out of use, this Part 2 of
the comparison is generally limited to the ASME, CEN, and CSA standards. The Japan Elevator Association
was invited to add their standards to this comparison, however, no response to this request was received.
This report is intended to aid standards writers in developing their safety requirements, and to help standard
users understand the basis for the requirements as they are applied throughout the world.
This report is not intended to replace existing safety standards. Conclusions are arrived at in some cases, but
only where there is unanimity amongst the various experts. In other cases, the reasons for the divergent views
are expressed.
This report must be read in conjunction with the various safety standards, as it was often necessary to
summarize the requirements for the sake of clarifying the comparisons. Further, the information contained in
this report does not necessarily represent the opinions of the standards writing organizations responsible for
the development of the safety standards which are being compared, and they should be consulted regarding
interpretations of their requirements (see Annex B).
Introduction to this edition
After the original publication (1996) of this technical report, including American, Canadian and European data
and thereto Supplement 1 (1999-08-01), which added Australian and Japanese data, has been revised or
amended. The recommendations in the form of “agreed upon points” stated in the first edition have also
affected the revisions of the national standards.
The original report and amendment have been widely used by lift industry and standards writing organizations,
including the ISO Technical Committee 178. Users have expressed need for an updated and consolidated
version of the document, in particular the comparison tabulations. With the Resolution 208/2002, the
ISO/TC 178 requested WG4 to consolidate original publications, including Supplements and “to update
comparison tables in ISO/TR 11071 with data from the most recently published standards for lifts and to
republish both documents, Part 1 and Part 2 with updated tables and with minimum changes to the narrative
sections”.
The narrative sections of the original publication, in particular assumptions, historical backgrounds,
observations and suggestions as well as the points agreed upon were the result of extensive work of the
ISO/TC 178 Working group 4. ISO/TC 178 is currently working on a new series of ISO documents under the
general title Safety requirements for lifts (elevators). In that process the updated comparison tables are being
used as reference. Extensive work on complete re-write of the narrative sections was not deemed necessary.
However, republication of the text with only minor editorial changes would help readers to understand the
background to the safety concerns being addressed in the current national standards. However, because of
recent (2000) harmonization of ASME and CSA Codes, it was necessary to replace the quoted rule numbers
with those in the current Codes In most sentences the ASME and CSA. I some other cases quoted references
are updated in a NOTE following the narrative section or sentence.
All quoted requirement referenced in all tables (CEN, ASME/CSA, Japan and SA) are up to date.

vi © ISO 2006 – All rights reserved

TECHNICAL REPORT ISO/TR 11071-2:2006(E)

Comparison of worldwide lift safety standards —
Part 2:
Hydraulic lifts (elevators)
1 Scope
This Technical Report consists of a comparison of the requirements of selected topics as covered by the
following worldwide safety standards (excluding regional or national deviations):
a) CEN European Standard EN 81-2:1998, Safety rules for the construction and installation of lifts — Part 2:
Hydraulic lifts;
b) ASME A17.1:2004, Safety Code for Elevators and Escalators and CSA B44:2004, Safety Code for
Elevators;
c) Japan - Building Standard Law of Japan (BSLJ);
d) Standards Australia:
⎯ AS 1735-1:2003, Lifts, Escalators and Moving Walks — Part 1: General Requirements;
⎯ AS 1735-3:2002, Lifts, Escalators and Moving Walks — Part 3: Passenger and Goods Lifts —
Electro-hydraulic.
This Technical Report applies to hydraulic lifts only, both of the direct and indirect acting type.
It should be noted that, in addition to the above listed standards, lifts must conform to the requirements of
other standards (for example, standards covering mechanical, structural, and electrical equipment; building
codes, and environmental regulations). Some of the standards will be referred to in this Technical Report.
2 Terminology
2.1 Lifts and elevators
2.1.1 The CEN term lift corresponds to the ASME and CSA term elevator. These terms are used
inter-changeably in this report.
2.1.2 For the purposes of this report, unless otherwise specified, the terms passenger lift and freight lift
correspond to the following terms used in other Standards:

*
Term used in this
Correspond to terms used in the following standards
report
CEN ASME and CSA
Passenger lift Lift except goods passenger lift Passenger elevator & freight elevator
permitted to carry passengers
**
Freight lift Freight elevator
Goods passenger lift
* See the definitions in the applicable Standards.
**
This term is used only to enable comparisons to be made later in this report. It does not indicate recognition of the term “freight lift”
by CEN.
2.2 Hydraulic terminology
2.2.1 Difference
There are some notable differences in the standards respecting hydraulic lift terminology as shown in the
Table 1, Column A and B.
2.2.2 Agreed-upon points, re: hydraulic terminology
The differences should be eliminated or minimized through proposed changes to ASME and CSA Standards,
as shown in Table 1, Column D.
If approved by ASME and CSA Committees, the proposed changes would eliminate major differences
between CEN and North American Standards.
Column C gives the description of the equipment that a term (listed in Column A, B, or D) embraces.
In addition to “hydraulic machine”, ASME and CSA propose to introduce the term “hydraulic driving machines”
hydraulic driving machines”. The terms are needed to differentiate between “electric” and “hydraulic” driving
machines all covered in one ASME and CSA Standard. This is not necessarily applicable to CEN, as the
electric and hydraulic lifts are covered by two separate standards.
2 © ISO 2006 – All rights reserved

2.2.3 Terminology in this report
In this report, the CEN terminology will be used, with the ASME and CSA terms in brackets if different.
Table 1 — Hydraulic Terminology
Column A Column B Column C Column D
CEN ASME & CSA Description Agreed upon points:
Current ASME & CSA proposed
changes
Direct acting Direct plunger — Direct acting hydraulic
a
elevator
hydraulic elevator
lift
Indirect acting Roped hydraulic — No change
Elevator
lift
b
Machine — Pump, motor, valves Hydraulic Machine
c
Jack Driv
...