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ASME A17.3-2023

Safety Code for Existing Elevators and Escalators
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ASME A17.3-2023

Safety Code for Existing Elevators and Escalators

PUBLISH DATE 2024
PAGES 125
ASME A17.3-2023

Purpose of ASME A17.3-2023

The code's core objective is to enhance the safety of the general public using older elevators and escalators by addressing common safety hazards that were not covered by the original installation codes. It recognizes that older equipment cannot always comply with every rule for new construction (ASME A17.1), so it identifies the most critical safety upgrades necessary to minimize risk.

The standard is intended to serve as the basis for:

  • Jurisdictional Retroactive Requirements: State and local authorities use this code to mandate upgrades for existing devices, often assigning key numbers to rules to indicate when compliance is required, typically after a certain date or following a major alteration.
  • Targeted Safety Improvements: It focuses on high-impact safety issues that, if addressed, significantly reduce the likelihood of severe accidents, such as unintended car movement and faulty door contact circuits.

What is it Used For?

ASME A17.3-2023 is primarily used by building owners, managers, consultants, and elevator contractors for modernization and mandatory safety upgrade projects involving aging equipment. Key applications include:

  • Mandating Unintended Movement Protection: It requires older electric elevators to be retrofitted with protection against unintended car movement and ascending car overspeed, safety features that were only required on new elevators installed after the mid-2000s.
  • Implementing Door Lock Monitoring (DLM): It drives the requirement for older hydraulic and electric elevators to install door lock monitoring systems to prevent the elevator from operating if the car or hoistway doors aren't properly secured—a key change in response to past accidents.
  • Guiding Retroactive Alterations: It provides the specific safety requirements that must be met when making any major alteration to an existing elevator, ensuring that the alteration process increases, rather than compromises, the device's overall safety level.

This code ensures that even if a vertical conveyance system is decades old, it must still be brought up to a minimum standard of contemporary safety, making it a critical tool for public safety in existing infrastructure.

SDO ASME: American Society of Mechanical Engineers
Document Number A17.3
Publication Date Feb. 26, 2024
Language en - English
Page Count 125
Revision Level
Supercedes
Committee
Publish Date Document Id Type View
Feb. 26, 2024 ASME A17.3-2023 Revision