Automatic Entrances AHA (Activity Hazard Analysis / Job Hazard Analysis)
Updated 2026-06-23
An Automatic Entrances AHA (Activity Hazard Analysis / Job Hazard Analysis) is the plan for installing automatic entrance doors — the powered sliding and swing entrances with motion and presence sensors — and its defining hazard is the one that separates them from any manual entrance: the door moves on its own under power, and a sensor can trigger it unexpectedly. This AHA is about a powered, self-actuating door in a public opening.
Why automatic entrances needs its own AHA
An automatic entrance is a powered entry — a sliding or swinging door driven by an operator and controlled by motion and presence sensors — that opens when someone approaches and closes behind them. Layered on the heavy-glass-leaf and public-doorway hazards of any entrance, the powered operator and its sensors are the defining new hazard. The operator drives the door leaf with motorized force, so during installation and commissioning a powered door is a crushing and striking hazard if it can move, and — uniquely — the door is controlled by sensors that can trigger it: a motion sensor that sees the installer, a test activation, or a miswired control can actuate the door unexpectedly while someone is in its path or working on the mechanism. So the crew faces not just a powered door but one that can start moving on its own from a sensor. The doors are also usually heavy glass (the entrance glass-leaf hazards), and they go in the busiest public opening (the public-doorway hazards). So the defining hazards are the powered operator and its sensor-triggered actuation, plus the heavy glass leaf and the public opening. This is a machine that watches for people and moves when it sees them, installed where people constantly are.
Breaking automatic entrances into steps
The steps handle the powered system deliberately:
- Confirm the operator, sensors, and door type from the submittal
- Control the public opening during installation
- Lock out the operator power during mechanical installation
- Install the door leaves, operator, and sensors (power isolated)
- Energize under controlled conditions for commissioning
- Set and test the sensors and safety functions clear of the door path
- Verify safe automatic operation before public use
The hazards step by step
The powered operator and sensor-triggered actuation
The defining hazard is a door that moves under power and can be triggered by a sensor. During mechanical installation, the operator must be locked out and its power isolated, because a powered door that actuates while hands are in the mechanism or the leaf is being handled can crush or strike. And the sensor dimension is specific to automatic doors: once power is on for commissioning, a motion or presence sensor can see the installer or a passerby and trigger the door unexpectedly, so the door can start moving on its own without anyone commanding it. The controls are locking out the operator through all mechanical work, energizing only under controlled conditions for commissioning with the crew aware the door can now self-actuate, keeping clear of the door's travel path once power is on, and setting/testing the sensors deliberately with everyone clear of the leaf. Treat a powered-up automatic door as capable of moving at any moment, because its sensors are designed to make it do exactly that.
Sensor and safety-function commissioning
Automatic doors have safety sensors and functions (presence detection, reversing, speed and force limits) that must be set and tested — and the testing inherently involves activating the door. The hazard is commissioning the door's motion while in its path. Commission per the manufacturer with the crew clear of the travel path, test the safety functions (presence sensors, reversing, force limits) methodically, and verify the door detects and stops for people before it's released to public use — a mis-set sensor or force limit is a public crushing hazard.
The heavy glass leaf
Automatic entrance leaves are usually heavy glass (sliding glass panels or glass swing doors), so all the entrance glass-leaf handling hazards apply — team-handle with glass equipment and cut protection, control the leaf, and don't drop or edge-strike the glass. The powered operator moves this heavy glass leaf, which is part of why its force is a serious hazard.
The public opening, glass, eye, and electrical
The busiest public opening (control and mark it, keep public clear), the glass (cut/shatter, cleanup), the eye protection, and the operator's electrical work (qualified, de-energized during mechanical work) all bring their controls.
A simple Automatic Entrances AHA structure
| Step | Hazard | Control | Standard |
|---|---|---|---|
| Mechanical install | Powered actuation / sensor trigger | Lock out operator and isolate power during install | OSHA 1910.147 |
| Handle glass leaves | Heavy glass crush / shatter | Team-handle with glass equipment; control the leaf | OSHA 1926.251 |
| Energize for commissioning | Door self-actuates from sensor | Controlled energize; crew clear of travel path | OSHA 1910.147 |
| Set/test sensors | Struck by door during test | Commission per mfr.; test safety functions clear | mfr. / ANSI A156.10 (practice) |
| Control the opening | Public in powered-door area | Barricade and mark; keep public clear until verified | OSHA 1926.502 |
Where the operator power and the sensors define the danger
The two halves of the defining hazard — the powered operator and the triggering sensors — combine into a single principle: an energized automatic door can move at any moment, commanded by a sensor rather than a person. That's what makes it different from every manual door, and it's why lockout during mechanical work and clearing the path once power is on are both essential — you can't predict when a sensor will fire, so you either keep the door unpowered while hands are in it, or you stay out of its path when it's powered. The commissioning is the crux: it's the moment the door goes live and its sensors start watching, so it's run deliberately with everyone clear and the safety functions verified before the public — who the sensors are meant to protect — is anywhere near it.
From the field: what actually goes wrong
The automatic-entrance failures are the unexpected actuation and the mis-set safety. The actuation: someone works on a powered automatic door — or is in its path during commissioning — and a motion sensor sees them, or a test fires the operator, and the door drives open or shut into them, because a powered automatic door moves on a sensor's command, not a person's. The lockout wasn't in place, or the crew forgot the door was now live. The safety one is the delayed hazard: the door is released to the public with a presence sensor or force limit mis-set, and it closes on someone — the exact public it was supposed to detect and stop for. Both come from not respecting that this door watches and moves on its own. Lock it out while working on it, clear the path when it's live, and verify the safety functions before the public uses it.
The bottom line
An Automatic Entrances AHA is a powered-self-actuating-door plan. The operator drives the door under motorized force and sensors can trigger it unexpectedly, so the controls are locking out the operator and isolating power through all mechanical work, energizing only for controlled commissioning with the crew clear of the travel path, and methodically testing the safety sensors and functions before public use — layered on the heavy-glass-leaf handling and the public-opening controls of any entrance. Respect that the door moves on its own when its sensors say so, and the automatic entrance installs and commissions safely.
Frequently asked questions
What makes an automatic entrance more hazardous than a manual one?
The powered operator and its sensors. The door moves on its own under motorized force, and it's controlled by motion and presence sensors that can trigger it — so during commissioning a sensor can see the installer or a passerby and actuate the door unexpectedly, with no one commanding it. That's a crushing and striking hazard a manual door doesn't have: the door watches for people and moves when it sees them.
How do we work safely on the operator during installation?
Lock it out. Keep the operator's power isolated and locked out through all mechanical installation, because a powered door that actuates while hands are in the mechanism or the leaf is being handled can crush or strike. Only energize under controlled conditions for commissioning, with the crew aware the door can now self-actuate from its sensors, and keep clear of the travel path once power is on.
What has to be verified before an automatic door is used by the public?
The safety sensors and functions — presence detection, reversing, and speed/force limits. These must be set and methodically tested (which involves activating the door, so test with the crew clear of the path), and the door must be verified to detect and stop for people before release. A mis-set presence sensor or force limit is a public crushing hazard — it's the exact scenario the safeties exist to prevent.
Do the glass and public hazards still apply?
Yes. Automatic entrance leaves are usually heavy glass, so the entrance glass-leaf handling hazards apply (team-handle with glass equipment and cut protection), and they go in the busiest public opening, so control and mark the opening and keep the public clear until the door is verified. The powered operator moves that heavy glass leaf, which is part of why its force is a serious hazard.
Related AHAs and JHAs
- Entrances AHA — the manual entrance-doorway fundamentals
- Entrances and Storefronts AHA — the combined entrance/storefront fundamentals
- Special Function Doors AHA — the powered-operator door fundamentals
- Glass and Glazing Installation JHA — the glass-handling fundamentals
Written by Mustafa Tok, CSP, ASP, CHST — OSHA Authorized Outreach Trainer with 14+ years of international construction safety experience across federal, heavy civil, and industrial projects.