Tag It Out: Why Every Defective MEWP Must Be Taken Out of Service Immediately
When working at height, safety begins long before the platform leaves the ground.
A Mobile Elevating Work Platform (MEWP) is designed to provide safe access to elevated work areas, but like any piece of equipment, it can only do so when it is properly maintained and operating as intended. A faulty MEWP can quickly turn a routine task into a serious incident.
That’s why one of the most important responsibilities of every operator is knowing when and how to remove a defective MEWP from service.
In this edition of Smart Start Monday, we’re focusing on a simple but critical safety principle: Tag It Out.
What Does “Tag It Out” Mean?
Tagging out a MEWP means clearly identifying that the machine is unsafe, defective, or unfit for operation and ensuring that nobody else can use it until the issue has been resolved.
A tag-out procedure helps prevent operators from unknowingly using equipment that could place themselves or others at risk.
While a fault may appear minor at first glance, using a MEWP that has known defects can result in equipment failure, property damage, serious injury, or even fatalities.
Step 1: Recognise the Problem During Your Pre-Use Inspection
Every MEWP operator should conduct a thorough pre-use inspection before beginning work.
This inspection is your first opportunity to identify defects before they become incidents.
Common issues that should immediately raise concern include:
- Hydraulic leaks
- Damaged guardrails
- Faulty controls
- Malfunctioning alarms
- Damaged tyres or wheels
- Missing safety decals
- Structural damage
- Electrical faults
A pre-use inspection isn’t simply a paperwork exercise. It is a critical safety check that helps ensure the machine is fit for purpose before work begins.
If something doesn’t look right, sounds right, or operates correctly, treat it as a potential hazard until it has been assessed.
Step 2: Stop Using the MEWP Immediately
One of the most dangerous mistakes operators can make is attempting to “work around” a fault.
It’s easy to convince yourself that a quick task will only take a few minutes. However, incidents often occur when known defects are ignored.
Once a fault has been identified:
- Stop operating the MEWP immediately.
- Lower the platform if it is elevated.
- Secure the machine safely.
- Prevent further use until the issue has been assessed.
Remember, a defect rarely fixes itself. Continuing to operate faulty equipment increases risk with every movement.
Step 3: Tag the MEWP Out of Service
After stopping operation, the next step is to clearly communicate that the machine is not safe to use.
Attach a visible “Out of Service” tag to the controls or designated tagging point.
The purpose of the tag is simple:
- Warn other operators.
- Prevent accidental use.
- Provide immediate visual indication that the machine is unavailable.
Effective tagging procedures form an important part of any workplace safety system and help create clear communication between operators, supervisors, and maintenance personnel.
Step 4: Isolate the MEWP
Tagging alone may not be enough.
Where possible, the MEWP should also be isolated to prevent unauthorised use.
Depending on your company procedures, this may include:
- Removing the ignition key.
- Following lock-out procedures.
- Isolating power sources.
- Securing access to the machine.
Isolation creates an additional layer of protection by ensuring that nobody can simply ignore the tag and operate the equipment.
This step is especially important on busy sites where multiple operators may have access to the same machine.
Step 5: Report the Defect
Once the MEWP has been tagged and isolated, the defect must be reported immediately.
Notify your supervisor, fleet manager, maintenance department, or designated responsible person according to your company procedures.
Accurate reporting allows:
- Defects to be investigated promptly.
- Repairs to be scheduled.
- Maintenance records to remain accurate.
- Equipment to be safely returned to service.
A MEWP should only be returned to operation once the defect has been repaired, inspected, and verified as safe.
Why Tagging Out Matters
Some operators see tagging out as an inconvenience that delays productivity.
In reality, the opposite is true.
Proper defect management prevents:
- Workplace injuries
- Equipment damage
- Project delays
- Costly downtime
- Regulatory non-compliance
A few minutes spent identifying and reporting a fault can prevent days, weeks, or even months of disruption caused by an incident.
Most importantly, it helps protect the people working around the equipment.
Building a Strong Safety Culture
Safety isn’t just about procedures; it’s about mindset.
Strong safety cultures are built when operators feel empowered to stop work, report defects, and take corrective action without fear of criticism for slowing down a job.
When defects are identified early and managed correctly, everyone benefits:
- Operators stay safe.
- Sites remain productive.
- Equipment lasts longer.
- Businesses reduce risk.
Final Thoughts
A known fault becomes a safety risk the moment it is ignored.
If a MEWP isn’t safe to use, take it out of service immediately.
Recognise the issue.
Stop using the machine.
Tag it out.
Isolate it.
Report it.
Because effective MEWP safety isn’t about slowing the job down—it’s about preventing incidents before they happen.
At Kwick Access Rentals, we believe that safer operators create safer worksites. That’s why we’re committed to sharing practical work-at-height safety tips through our Smart Start Monday series.
Stay safe. Stay smart.