Key Takeaways: A proper LOTO procedure isn’t just a step count; it’s a mindset shift. The core steps are preparation, shutdown, isolation, application, verification, and release. The real work is in the preparation, communication, and verification that happens around those steps. Missing one can mean the difference between a safe worksite and a catastrophic incident.
So, you’re looking at a lockout tagout procedure and wondering, “How many steps are we really talking about here?” It’s a fair question, especially when you’re trying to train a team or audit your own safety program. The short, textbook answer is usually six or seven steps. But if we’re being honest—and we’ve seen this in plants from Allston to Worcester—that number is almost a trick. Counting steps is easy. Executing each one with the rigor it demands, every single time, is where most programs live or die.
What is Lockout Tagout (LOTO)?
Lockout Tagout (LOTO) is a safety procedure used in industry and research settings to ensure that dangerous machines and energy sources are properly shut off and not able to be started up again before the completion of maintenance or servicing work. It involves physically locking the energy isolation device in a safe position and attaching a warning tag. This isn’t just a good idea—it’s an OSHA standard (29 CFR 1910.147) for a reason, designed to prevent the unexpected startup or release of stored energy, which can cause serious injury or death.
The real question isn’t about the number of steps, but what’s packed into each one. We’ve walked into facilities where the binder looks perfect, but the practice is full of shortcuts. Someone will use a lock without a tag because the tag got dirty. Or they’ll “verify” isolation by just looking at the switch, not actually trying to start the machine. That’s when near-misses happen. Let’s break down what a proper procedure actually entails, based on the reality of the work floor, not just the manual.
Table of Contents
The Preparation Phase: Where Most Failures Begin
The official “steps” often start with notification and shutdown. But the procedure truly begins hours or days before anyone picks up a lock. This is the planning stage, and skipping it is the most common mistake we see.
You need a specific, machine-specific procedure written out. Not a generic one. The energy sources for a massive hydraulic press in an auto shop are different from a commercial bakery’s conveyor oven. You must identify all energy sources: electrical, mechanical, hydraulic, pneumatic, gravitational, thermal, and even chemical. We did a survey for a client in a older Allston manufacturing space and found a legacy pneumatic line everyone had forgotten about, simply because it was buried in a ceiling conduit. That’s a stored energy hazard waiting for a bad day.
Gathering the right devices is part of this, too. You need locks, tags, hasps, circuit breaker lockouts, valve lockouts, and more. And crucially, every affected employee—not just the authorized one doing the work—must be notified. If the guy on the next shift doesn’t know the machine is locked out, problems can arise.
The Core Action Steps: More Than a Checklist
Once preparation is done, the classic steps unfold. But each is a gate that must be firmly closed.
- Shutdown. This seems obvious, but it’s not just hitting the “stop” button. It’s about shutting down the equipment using its normal operating controls, in a way that doesn’t create a new hazard. A controlled stop is different from an emergency stop.
- Isolation. Here’s where you physically disconnect the machine from its energy sources. Throw the main disconnect, close the valve, block the pipe. This is the heart of the “lockout” part.
- Application of LOTO Devices. This is the non-negotiable physical act. Your personal lock and tag go on every energy isolation point. The tag must have your name, date, department, and the reason for the lockout. The lock must be durable, singularly keyed, and used only for LOTO. We can’t tell you how many times we’ve seen a Master Lock from a toolbox used for this. It’s not the same.
- Release of Stored Energy. After isolation, you must bleed, block, or brace any residual or stored energy. This means bleeding pneumatic lines, blocking a raised component with gravity fall potential, or discharging capacitors. This step catches so many people. Just because it’s unplugged doesn’t mean it’s safe.
- Verification of Isolation. This is the critical step that separates a paperwork exercise from a life-saving procedure. After applying locks and releasing stored energy, you must verify the equipment is de-energized. This means trying to start it with the controls. Push the “on” button. Try the actuator. Do this at the point of operation. The machine should not move, hum, or react. Only then is it safe to work.
The Release & Restart: A Procedure, Not a Free-For-All
Work is done. Now what? This isn’t a race to get production going again. The restart has its own strict protocol.
The authorized employee who applied the locks must remove them, but only after ensuring the work is complete, tools are removed, guards are replaced, and employees are clear of danger zones. Then, and only then, are the locks and tags removed by the person who applied them. This last part is vital—no one else removes your lock. Finally, you notify all affected employees that the equipment is about to be re-energized. A clear “Clear!” warning is standard.
When LOTO Gets Complicated: Group Lockouts & Shift Changes
The simple six-step model works for one person, on one shift. Reality is messier. What about a team of five working on a massive boiler system? Or a job that spans three shifts?
Group LOTO requires a coordinator and a procedure that ensures continuity of protection. Often, a group lockbox is used: each individual places their personal lock on the box, and a single “group” lock secures the energy source. The last person to remove their lock frees the group lock. It’s more complex and requires meticulous tracking.
For shift changes, the incoming crew must apply their own locks before the outgoing crew removes theirs. There can be no gap in protection. This is where communication breaks down most frequently, especially in high-turnover environments.
The Trade-Offs & Real-World Constraints
Let’s be practical. The biggest pushback we hear is about time and productivity. “LOTO takes too long.” It’s a constant tension. Our response is always the same: measured against what? The 20 minutes it takes to properly lock out a machine versus the weeks of downtime, investigation, and human tragedy following a serious injury? There’s no comparison.
The cost is another factor. A proper LOTO program isn’t free. You need to invest in quality hardware, training, and procedure development. But the alternative cost—OSHA fines, workers’ compensation claims, legal liability, and morale loss—is astronomically higher.
| Consideration | The “Quick” Way | The Proper LOTO Way | The Real-World Trade-Off |
|---|---|---|---|
| Time to Start Work | Minutes. Just shut it off and go. | 30+ Minutes. With prep, notification, isolation, and verification. | Proper LOTO feels slower upfront but prevents catastrophic delays from incidents. |
| Perceived Productivity | High. No “wasted” safety time. | Lower. Time spent on non-productive safety steps. | This is a false economy. True productivity includes zero unplanned stoppages from injuries. |
| Risk | Extremely High. Relies on human memory and perfect communication. | Minimized. Physical locks and verified isolation create a positive barrier. | Accepting higher risk might work 999 times out of 1,000. The 1,000th time changes everything. |
| Regulatory & Liability | Major Exposure. Will fail an OSHA audit and lose in court after an incident. | Compliant & Defensible. Demonstrates a recognized “duty of care.” | The cost of non-compliance is far greater than the cost of the program. |
When LOTO Might Not Be the (Whole) Answer
LOTO is for servicing and maintenance where the unexpected energization could cause harm. It’s not always required for minor, routine, repetitive tasks using normal production operations, if those tasks are covered under other OSHA standards (like machine guarding). However, the line between “routine” and “servicing” is blurry and often litigated. If there’s any doubt, lock it out. There’s also the concept of “alternative methods” for certain cord-and-plug equipment, but again, when in doubt, lock it out.
Bringing It Home: The Local Angle
In a dense, mixed-use city like Boston, with its blend of century-old industrial buildings in Allston and sleek new labs, LOTO hazards are everywhere. The old wiring in a building near Harvard Square poses different challenges than the complex HVAC systems in a new downtown high-rise. The core principles don’t change, but the application does. For a local business owner, whether you’re running a machine shop off Soldiers Field Road or managing a facility near the Allston Yards development, a robust LOTO program isn’t just compliance—it’s a cornerstone of responsible operation. It protects your team, your business, and your community’s well-being.
Final Thought
So, how many steps are involved in a proper lockout tagout? Officially, six. In practice, it’s a hundred small decisions to do each one right. It’s the decision to write a specific procedure instead of using a generic template. It’s the decision to try the start button even though you’re sure it’s off. It’s the decision to have that awkward conversation with a veteran mechanic who wants to take a shortcut. The steps are the framework, but the safety is built by the culture that respects them. Start with the six steps, but build the culture that makes them unskippable.
