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ASME A17.3-2020
M00050583
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ASME A17.3-2020 Safety Code for Existing Elevators and Escalators
standard by ASME International, 02/15/2021
Full Description
This Code is intended to serve as the basis for state and local jurisdictional authorities in adopting retroactive requirements for existing elevators and escalators to enhance the safety of the general public. It is also intended as a standard reference of safety requirements for the
guidance of architects, engineers, insurance companies, manufacturers, and contractors, and as a standard of safety practices for building owners and managers of structures where existing elevator equipment covered in the scope of the Code is used.
The purpose of this Code is to establish minimum requirements that will provide a reasonable degree of safety for the general public. While many of these requirements will also increase the degree of safety for the elevator mechanic and inspector, this area has not been specifically
addressed at this time.
Operation and maintenance instructions in this Safety Code are intended for general applications. The equipment manufacturer or installer or both shall be consulted for specific operating or maintenance instructions.
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Safety Code for Existing Elevators and Escalators
Includes Requirements for Electric and Hydraulic Elevators and Escalators
AN A MERICAN NA TIONAL S T AND ARD
ASME A17.3-2020
(Revision of ASME A17.3-2017)
ASME A17.3-2020
(Revision of ASME A17.3-2017)
Safety Code for
Existing Elevators and Escalators
Includes Requirements for Electric and Hydraulic Elevators and Escalators
AN AMERICAN NATIONAL STANDARD
Date of Issuance: February 15, 2021
The next edition of this Code is scheduled for publication in 2023. This Code will become effective 6 months after the Date of Issuance.
ASME issues written replies to inquiries concerning interpretations of technical aspects of this Code. Periodically certain actions of the ASME A17 Committee may be published as Cases. Cases and interpretations are published on the ASME website under the Committee Pages at https://cstools.asme.org/ as they are issued.
Errata to codes and standards may be posted on the ASME website under the Committee Pages to provide corrections to incorrectly published items, or to correct typographical or grammatical errors in codes and standards. Such errata shall be used on the date posted.
The Committee Pages can be found at https://cstools.asme.org/. There is an option available to automatically receive an e-mail notification when errata are posted to a particular code or standard. This option can be found on the appropriate Committee Page after selecting “Errata” in the “Publication Information” section.
ASME is the registered trademark of The American Society of Mechanical Engineers.
This code or standard was developed under procedures accredited as meeting the criteria for American National Standards. The Standards Committee that approved the code or standard was balanced to assure that individuals from competent and concerned interests have had an opportunity to participate. The proposed code or standard was made available for public review and comment that provides an opportunity for additional public input from industry, academia, regulatory agencies, and the public-at-large.
ASME does not “approve,” “rate,” or “endorse” any item, construction, proprietary device, or activity.
ASME does not take any position with respect to the validity of any patent rights asserted in connection with any items mentioned in this document, and does not undertake to insure anyone utilizing a standard against liability for infringement of any applicable letters patent, nor assume any such liability. Users of a code or standard are expressly advised that determination of the validity of any such patent rights, and the risk of infringement of such rights, is entirely their own responsibility.
Participation by federal agency representative(s) or person(s) affiliated with industry is not to be interpreted as government or industry endorsement of this code or standard.
ASME accepts responsibility for only those interpretations of this document issued in accordance with the established ASME procedures and policies, which precludes the issuance of interpretations by individuals.
No part of this document may be reproduced in any form, in an electronic retrieval system or otherwise,
without the prior written permission of the publisher.
The American Society of Mechanical Engineers Two Park Avenue, New York, NY 10016-5990
Copyright © 2021 by
THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS
All rights reserved Printed in U.S.A.
CONTENTS
Foreword . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vi
Committee Roster . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . viii
Preface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xiv
Summary of Changes xviii
Part I | Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 1 |
Section 1.1 | Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 1 |
Section 1.2 | Application of Code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 1 |
Section 1.3 | Purpose and Exceptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 2 |
Section 1.4 | Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 2 |
Section 1.5 | Alterations, Maintenance, and Inspections and Tests . . . . . . . . . . . . . . . . . . . . . . . | 18 |
Section 1.6 | Reference Documents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 18 |
Part II | Hoistways and Related Construction for Electric Elevators . . . . . . . . . . . . . . . . . . . | 20 |
Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 20 | |
Section 2.1 | Hoistways . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 20 |
Section 2.2 | Machine Rooms and Machinery Spaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 21 |
Section 2.3 | Pits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 22 |
Section 2.4 | Clearances and Runbys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 22 |
Section 2.5 | Protection of Spaces Below Hoistways . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 23 |
Section 2.6 | Hoistway Entrances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 23 |
Section 2.7 | Hoistway-Door Locking Devices, Parking Devices, and Access . . . . . . . . . . . . . . . . | 25 |
Section 2.8 | Power Operation of Doors and Gates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 27 |
Part III | Machinery and Equipment for Electric Elevators . . . . . . . . . . . . . . . . . . . . . . . . . . | 28 |
Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 28 | |
Section 3.1 | Buffers and Bumpers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 28 |
Section 3.2 | Counterweights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 28 |
Section 3.3 | Car Frames and Platforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 28 |
Section 3.4 | Car Enclosures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 29 |
Section 3.5 | Safeties . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 31 |
Section 3.6 | Speed Governors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 32 |
Section 3.7 | Capacity and Loading . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 32 |
Section 3.8 | Driving Machines and Sheaves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 34 |
Section 3.9 | Terminal Stopping Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 36 |
Section 3.10 | Operating Devices and Control Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 37 |
Section 3.11 | Emergency Operation and Signaling Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 40 |
Section 3.12 | Suspension Means and Their Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 40 |
Section 3.13 | Ascending Car Overspeed and Unintended Car Movement Protection . . . . . . . . . . . | 42 |
Part IV | Hydraulic Elevators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 44 |
Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 44 |
Section 4.1 | Hoistway, Hoistway Enclosures, and Related Construction . . . . . . . . . . . . . . . . . . . | 44 |
Section 4.2 | Mechanical Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 44 |
Section 4.3 | Driving Machines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 44 |
Section 4.4 | Valves, Supply Piping, and Fittings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 45 |
Section 4.5 | Tanks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 45 |
Section 4.6 | Terminal Stopping Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 45 |
Section 4.7 | Operating Devices and Control Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 46 |
Section 4.8 | Additional Requirements for Counterweighted Hydraulic Elevators . . . . . . . . . . . . | 46 |
Section 4.9 | Additional Requirements for Roped-Hydraulic Elevators . . . . . . . . . . . . . . . . . . . . | 46 |
Part V | Escalators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 48 |
Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 48 | |
Section 5.1 | Construction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 48 |
Section 5.2 | Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 49 |
Section 5.3 | Operating and Safety Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 49 |
Section 5.4 | Lighting of Escalators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 50 |
Section 5.5 | Entrance and Egress Ends . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 51 |
Part VI | Dumbwaiters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 53 |
Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 53 | |
Section 6.1 | Hoistway, Hoistway Enclosures, and Related Construction . . . . . . . . . . . . . . . . . . . | 53 |
Section 6.2 | Machinery and Equipment for Hand and Electric Dumbwaiters . . . . . . . . . . . . . . . | 54 |
Section 6.3 | Machinery and Equipment for Hydraulic Dumbwaiters . . . . . . . . . . . . . . . . . . . . . | 56 |
Part VII | Hand Elevators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 58 |
Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 58 | |
Section 7.1 | Hoistway, Hoistway Enclosures, and Related Construction . . . . . . . . . . . . . . . . . . . | 58 |
Section 7.2 | Machinery and Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 59 |
Part VIII | Sidewalk Elevators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 61 |
Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 61 | |
Section 8.1 | Hoistway, Hoistway Enclosures, and Machine Rooms . . . . . . . . . . . . . . . . . . . . . . . | 61 |
Section 8.2 | Machinery and Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 62 |
Part IX | Moving Walks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 64 |
Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 64 | |
Section 9.1 | Protection of Floor Openings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 64 |
Section 9.2 | Protection of Supports and Machine Spaces Against Fire . . . . . . . . . . . . . . . . . . . . | 64 |
Section 9.3 | Construction Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 64 |
Section 9.4 | Entrance and Egress Ends . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 65 |
Section 9.5 | Driving Machine, Motor, and Brake . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 65 |
Section 9.6 | Operating and Safety Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 66 |
Section 9.7 | Lighting and Access . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 67 |
Part X | Private Residence Elevators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 68 |
Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 68 | |
Section 10.1 | Hoistway, Hoistway Enclosures, and Related Construction . . . . . . . . . . . . . . . . . . . | 68 |
Section 10.2 | Cars . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 70 |
Section 10.3 | Counterweights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 71 |
Section 10.4 | Safeties and Governors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 71 |
Section 10.5 | Car and Counterweight Guide Rails and Fastenings . . . . . . . . . . . . . . . . . . . . . . . . | 72 |
Section 10.6 | Car and Counterweight Buffers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 72 |
Section 10.7 | Driving Machines, Sheaves, and Their Supports . . . . . . . . . . . . . . . . . . . . . . . . . . . | 72 |
Section 10.8 | Terminal Stopping Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 74 |