Work Equipment Inspection
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Common PUWER Non-Compliances Found on Factory Machinery (And How to Fix Them)
In UK manufacturing environments, compliance with the Provision and Use of Work Equipment Regulations 1998 (PUWER) is not optional — it is a legal duty. Yet during site audits, accident investigations, and enforcement visits, the same machinery safety failings repeatedly appear.
This article draws on practical experience supporting factories across multiple sectors to highlight the most common PUWER non-compliances found on factory machinery, why they occur, and what businesses can do to correct them before they result in enforcement action or injury.
What Is PUWER and Why It Matters
PUWER requires that work equipment provided for use at work is:
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Suitable for its intended use
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Safe for use, maintained in a safe condition
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Inspected to ensure it is correctly installed and does not deteriorate
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Used only by people who have received adequate training
The regulations are enforced by the Health and Safety Executive (HSE), which has the authority to issue Improvement Notices, Prohibition Notices, and prosecute serious breaches.
Non-compliance is not just a paperwork issue — it is frequently linked to crush injuries, amputations, entanglements, and fatal accidents.
1. Inadequate or Missing Machine Guarding (Regulation 11)
The Problem
The single most common PUWER breach in factories is ineffective guarding of dangerous parts.
Typical examples include:
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Missing fixed guards
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Interlocked guards that have been bypassed
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Damaged perimeter fencing
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Exposed chains, belts, gears, or rotating shafts
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Access to in-running nip points
In many cases, guarding was originally compliant but has deteriorated, been removed for maintenance, or modified to improve production access.
Why It Fails Compliance
PUWER Regulation 11 requires that dangerous parts of machinery are prevented from being accessed. Temporary solutions — cable ties, taped interlocks, or removable panels without fixings — do not meet the legal standard.
How to Fix It
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Conduct a machinery guarding survey
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Verify interlock functionality and tamper resistance
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Replace improvised guards with engineered solutions
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Reassess risk after any production modification
2. Defective or Inadequate Emergency Stop Systems
The Problem
Emergency stop devices are present — but ineffective.
Common audit findings include:
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E-stops that do not latch
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Obstructed or poorly located buttons
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Circuits that do not remove hazardous motion
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Lack of regular functional testing
Why It Fails Compliance
PUWER requires appropriate control systems. An emergency stop must reduce risk effectively and reliably. If it does not stop the hazardous movement, it is not compliant — regardless of appearance.
How to Fix It
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Function-test all E-stops under load conditions
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Verify stopping performance and category
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Ensure clear visibility and accessibility
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Introduce documented periodic testing
3. Unsafe Machinery Modifications
The Problem
Production pressures often lead to:
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Increased operating speeds
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Added automation
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Altered guarding
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Disabled safety circuits
Many businesses do not realise that modifying machinery can trigger legal duties beyond PUWER, particularly under the Supply of Machinery (Safety) Regulations.
Why It Fails Compliance
Unassessed modifications may invalidate conformity and introduce new hazards. PUWER requires risks to be assessed and controlled — including risks introduced by changes.
How to Fix It
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Implement a formal machinery change procedure
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Conduct a documented risk assessment before modification
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Review safety-related control systems
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Revalidate compliance after changes
4. Inadequate Inspection and Maintenance (Regulation 5 & 6)
The Problem
Maintenance is often reactive rather than preventative.
Frequent issues include:
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No written inspection regime
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Overdue servicing
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No documented safety inspections
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Unresolved defects from previous audits
During enforcement investigations, absence of inspection records is one of the fastest ways to demonstrate non-compliance.
Why It Fails Compliance
PUWER requires equipment to be maintained in an efficient state and inspected where deterioration could result in danger.
How to Fix It
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Implement a planned preventative maintenance (PPM) system
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Introduce formal safety inspection checklists
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Record all inspections and corrective actions
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Track and close out defects
5. Inadequate Risk Assessments
The Problem
Many factories rely on:
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Generic risk assessments
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Outdated documentation
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Assessments that ignore cleaning and maintenance tasks
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No reassessment after machinery relocation
Why It Fails Compliance
PUWER requires risks from work equipment to be properly assessed. A generic assessment does not demonstrate that specific machine hazards have been considered.
How to Fix It
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Conduct machine-specific risk assessments
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Include all lifecycle stages (operation, cleaning, maintenance)
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Reassess after relocation or modification
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Ensure findings translate into physical controls
6. Poor Training and Competence Management
The Problem
Operators are often “shown once” how to use machinery without formal competence verification.
Common gaps include:
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No training records
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No refresher training
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Contractors operating machinery without induction
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No training following modifications
Why It Fails Compliance
PUWER requires that employees have received adequate training for the purposes of health and safety.
How to Fix It
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Implement structured operator training
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Maintain documented competency records
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Provide refresher training after changes
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Control contractor access to equipment
7. Inadequate Isolation and Lock-Out (LOTO)
The Problem
Serious injuries frequently occur during maintenance, not normal operation.
Common failings include:
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No lockable isolation points
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Shared keys
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No written isolation procedures
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No verification of zero energy
Why It Fails Compliance
Where maintenance exposes workers to risk, isolation must be effective. Failure to isolate energy sources is a frequent root cause in serious accident investigations.
How to Fix It
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Install lockable isolators
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Introduce personal padlock systems
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Train staff in isolation procedures
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Audit compliance routinely
Why These Non-Compliances Keep Reappearing
Across manufacturing sites, common root causes include:
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Production pressure overriding safety
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Lack of competent machinery safety expertise
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Legacy equipment with undocumented modifications
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Poor change management
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Weak inspection regimes
In our experience supporting factory audits and PUWER assessments, most non-compliances are not deliberate — they develop gradually as machinery ages or production demands evolve.
The Cost of Ignoring PUWER Non-Compliance
Enforcement action by the Health and Safety Executive can result in:
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Improvement Notices
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Prohibition Notices (stopping production immediately)
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Significant financial penalties
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Director-level liability in serious cases
More importantly, unresolved machinery risks can lead to life-changing injuries and reputational damage that far exceeds the cost of preventative action.
A Proactive Approach to PUWER Compliance
Businesses that manage PUWER effectively typically:
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Conduct periodic independent machinery audits
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Maintain detailed inspection records
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Apply formal change control to machinery modifications
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Integrate safety into engineering decision-making
A structured PUWER compliance review not only reduces legal risk but often improves reliability, reduces downtime, and strengthens workforce confidence.
Final Thoughts
Common PUWER non-compliances found on factory machinery are rarely complex — but they are frequently overlooked. Guarding, emergency stops, maintenance, training, and modification control remain the consistent weak points identified during inspections.
Addressing these issues proactively demonstrates due diligence, strengthens compliance with UK law, and most importantly, protects the people who operate and maintain your equipment every day.
If you are unsure whether your machinery would withstand regulatory scrutiny, a competent PUWER assessment can provide clarity, prioritised actions, and peace of mind.
PUWER98 FAQ's
The Provision and Use of Work Equipment Regulations 1998 (PUWER) apply to any business or organisation that provides work equipment for employees to use at work. This includes manufacturers, warehouses, engineering firms, food processors, and maintenance contractors.
PUWER is enforced by the Health and Safety Executive (HSE) and applies to employers, the self-employed, and those who control work equipment.
The most common non-compliance is inadequate or missing machine guarding under Regulation 11. This often involves:
- Removed or damaged guards
- Bypassed interlocks
- Accessible rotating or in-running parts
Guarding failures are a frequent cause of serious injuries and enforcement action.
PUWER does not specify exact inspection intervals. Instead, inspections must be carried out:
- After installation or relocation
- After exceptional circumstances (e.g., damage or modification)
- At suitable intervals where deterioration could result in danger
The frequency should be determined by risk assessment, manufacturer guidance, and usage intensity.
Yes. While older machinery may not have originally been built to current standards, it must still comply with PUWER requirements today.
If older equipment presents risk due to inadequate guarding, control systems, or emergency stops, it must be upgraded to reduce risk so far as is reasonably practicable.
They can. Significant modifications may trigger responsibilities under the Supply of Machinery (Safety) Regulations in addition to PUWER.
Any modification should be subject to a documented risk assessment and technical review to ensure safety systems remain effective and legally compliant.
If the HSE identifies serious breaches, they may issue:
- An Improvement Notice (requiring corrective action)
- A Prohibition Notice (stopping use of equipment immediately)
- Prosecution in severe cases
Penalties can include substantial fines and reputational damage, particularly if an injury has occurred.
No. PUWER requires that risks from specific work equipment are assessed and controlled. Generic or copy-and-paste assessments rarely address the real hazards associated with individual machines, especially during cleaning, maintenance, or fault-finding.
Machine-specific assessments are best practice.
Not necessarily. Emergency stops are required where they are appropriate to reduce risk. However, in factory environments, most powered machinery will require accessible and effective emergency stop devices.
The suitability and performance of emergency stops should be verified as part of a PUWER assessment.
A competent person should have:
- Practical knowledge of machinery safety
- Understanding of PUWER requirements
- Experience in risk assessment and control systems
- Awareness of relevant technical standards
Competence may come from in-house engineering expertise or independent machinery safety specialists.
Best practice includes:
- Conducting periodic machinery audits
- Maintaining documented inspection and maintenance regimes
- Implementing formal change control procedures
- Providing structured operator training
- Reviewing safety performance after modifications
A proactive approach reduces the likelihood of enforcement action and improves overall operational safety.
CE or UKCA marking relates to conformity at the point of supply under product safety legislation. PUWER relates to the safe use of equipment in the workplace.
Even if machinery is CE or UKCA marked, it can still be non-compliant under PUWER if it is poorly maintained, modified, or inadequately controlled during use.
