ASME A17.3: Minimum Safety Standards for Existing Elevators

What is ASME A17.3 and why does it exist?

A17.3 is the Safety Code for Existing Elevators and Escalators, and it exists because the installation code alone leaves a gap. A17.1 governs what gets built and what gets altered; without a companion standard, equipment installed decades ago would answer to nothing but the requirements of its own installation year for the rest of its life.

A17.3 closes that gap by defining a minimum safety baseline for equipment in service. It is deliberately narrower than A17.1 — it is not an instruction to rebuild old elevators as new ones, but a floor below which in-service equipment should not sit.

Existing installation

Equipment already in service, as distinct from new work or an alteration. A17.3 applies to it regardless of installation date.

Grandfathering

The idea that equipment answers permanently to the code of its installation year. In Texas it is only partly true — A17.3 minimums still apply.

Retrofit

Adding or upgrading a specific device or subsystem on existing equipment, often to close an A17.3 or inspection item without a full modernization.

Does Texas apply A17.3 to old elevators?

Yes. The standards TDLR adopts by rule under §754.014 include A17.3 for existing installations, and the statute's alteration language then governs any work you do on the equipment. Age does not exempt a unit from the existing-installation baseline.

The owner's operative duty is still §754.019(a)(5) — keep the equipment maintained to the standards and codes adopted by rule — with the annual inspection verifying it. A17.3 is one of the standards behind that sentence.

Source: Tex. Health & Safety Code §754.014 — Standards Adopted by Commission

What kinds of items does A17.3 typically drive?

The recurring themes on older equipment are door protection, firefighters' emergency operation, hoistway and machine room conditions, and the condition and testing of safety devices. Those are the areas where practice moved furthest between mid-century installations and current expectations.

• Door protection — reopening devices and door-closing behaviour on equipment built before modern detector systems were standard
• Firefighters' emergency operation — recall and in-car modes on buildings whose equipment predates them
• Car and hoistway door locking and closing requirements
• Machine room conditions — access control, lighting, and clearance around machinery
• Condition and periodic testing of safeties, governor, and brake
• In-car signage, markings, and emergency communication

Which specific items apply to your unit depends on its type, age, and what has already been retrofitted. Your inspector will cite what applies; the useful preparation is knowing the categories rather than guessing at line items.

How does A17.3 change the modernization conversation?

It reframes it from optional to scheduled. When an older unit is carrying multiple existing-installation items that keep reappearing, targeted retrofit work stops being an upgrade and starts being the cheapest way to hold compliance — and at some point full modernization costs less than continuing to close items one at a time.

Whatever the path, the alteration rule applies to the work: it is judged against the code in force when performed and may not leave the equipment less safe than the chapter requires. Getting that reviewed during scoping keeps required items out of the change-order column.

What should an owner of older equipment do first?

Get a current picture of the equipment and its findings history before deciding anything. Two years of inspection reports plus a contractor's survey will tell you whether you are looking at a retrofit list or a capital project.

1. Pull the last two or three inspection reports and mark which items repeat.
2. Have a licensed contractor survey the equipment — controls, doors, machine, and safeties.
3. Ask specifically which open items are existing-installation requirements versus wear.
4. Price the retrofit path and the modernization path against each other, itemized.
5. Decide with the building's remaining hold period and downtime tolerance in view.

Prime Elevator Corp performs that survey and the resulting work across the Houston metro under TDLR Elevator Contractor License #20478, with code review during scoping so the proposal reflects what the work actually requires.