Lockout Tagout (LOTO): Workplace Safety Essentials
Every year, workers are hurt when machines unexpectedly start up during servicing. Lockout Tagout or LOTO, is a critical safety procedure. It ensures equipment remains de-energised during maintenance or repairs, preventing unplanned starts.
Uncontrolled energy sources can lead to serious harm. Statistics show failures to adequately control hazardous energy is a significant cause of work-related deaths and injuries in Australian workplaces. This post clarifies differences between devices used during LOTO: lockout and tagout. Think about a technician working on a conveyor belt. Without LOTO, someone could unknowingly flip the switch, causing severe injury. Understanding the difference can save lives.
Lockout Devices: Physically Securing Energy Sources
Lockout devices block equipment from unintentionally becoming powered. These tools physically prevent energy flow to machinery. They work by first isolating the power source. Then, a lock keeps the energy-isolating device, like a switch or valve, in the “off” or “safe” position.
These devices are a physical barrier. Examples include lockout hasps, which allow multiple workers to lock out a single energy source; valve lockouts, used on pipelines; electrical plug lockouts, preventing cords from being plugged in; and circuit breaker lockouts, securing electrical panels.
Advantages of Lockout Devices
The main safety benefit comes from the physical obstruction lockout devices provide. They physically separate a worker from potential energy hazards. Lockout devices firmly keep equipment in a de-energised state. This significantly lowers the possibility of an accidental equipment start. Personnel can work on machinery confident it can’t be switched on by mistake.
Choosing the Right Lockout Device
Selecting the proper device depends on the form of energy present. Electrical systems require different lockouts compared to mechanical, hydraulic or pneumatic ones. Whatever the energy source, devices need to be tough, standardised across the site and readily available to employees. A reliable supply ensures timely implementation of lockout procedures.

Tagout Devices: Communicating Hazards

Tagout devices are warning labels attached to energy isolation spots. These signs signal potential hazards and forbid equipment use. Instead of a physical block, they are a communication tool. Tags generally display important data, like alert messages, maybe stating “Do Not Operate” or simply “Danger.” They also should indicate the reason the equipment is isolated, the name of the person authorised to work on it and the date and time the tag was placed.
Advantages of Tagout Devices
These devices furnish sight-based alerts and relay safety details. They serve as ongoing reminders of a dangerous situation. A brightly coloured tag on a switch or valve informs all personnel nearby of ongoing maintenance and to keep clear. It’s a visible warning that a machine should not be turned on.
Tagout Device Limitations
A key point: a tagout device is only a warning. It doesn’t stop equipment from operating like a lockout does. Problems can occur if tags are removed, damaged or if workers misunderstand the warning. Comprehensive employee training is essential. Workers must follow tagout protocols strictly. Without solid training and strict adherence, tagout systems are less reliable.
Key Differences Between Lockout and Tagout Devices
Lockout and tagout play distinct roles in workplace safety. The main difference lies in their approach. Lockout offers a physical barrier, preventing energy flow. Tagout, in contrast, depends on communication through warnings. This difference translates to risk reduction. Lockout generally lowers the chance of unexpected equipment start more effectively. Also, lockout can be verified with a sight test ensuring that the energy supply is isolated.
Enforcement also varies. A lockout, being a tangible block, is more easily verified. You can see the lock and confirm the energy source is secured. A tagout system depends on the good will and training of employees, because anyone can remove the tag, if they are untrained.
Frequently, LOTO combines both lockout and tagout for added defence. They complement each other.
There are instances where a facility’s lockout practices provide a stronger safety margin compared to its tagout system. This commonly happens in places with many untrained or casual personnel. The physical presence of a lock is easier to verify than an employee’s understanding of the meaning of a tag.
Building a Safe LOTO Program
A successful LOTO system demands several elements. Detailed written procedures are essential. These guide employees step by step. Thorough training for all employees is crucial. This includes both those who perform LOTO (“authorised employees”) and those who work near equipment (“affected employees”).
Regular audits check the program’s effectiveness. Energy control procedures must be followed. These include locating all energy sources, cutting off power, verifying the isolation is solid and releasing any stored energy, such as compressed springs or fluids. Procedures need periodic review and updates. Changes in equipment or processes demand matching changes in LOTO protocols.
Need Help with Your LOTO Program? Contact Locksafe!

Protecting your workforce is paramount. Locksafe provides dependable lockout/tagout equipment for varied industrial situations. With skills in mining, industrial settings and custom projects, Locksafe can deliver the right solution. From lockout hasps that secure multiple energy points, to isolation switches preventing accidental startups, our equipment provides safety.
Locksafe products, created in Australia, withstand harsh work conditions. Serving businesses in Western Australia, Queensland, NSW and farther afield, we can satisfy your LOTO equipment needs. Reach out to Locksafe now at +61 (0)8 9455 7255 or fill in our contact form to discuss your requirements.