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8 October 2026

Power Tools Under the Microscope: Safety Insights from NEN 3140 Work-Equipment Inspections

A damaged cable, worn insulation, or a hidden defect in a power tool can create serious safety risks long before anyone notices a problem. That is exactly why a NEN 3140 inspection matters. For businesses that rely on drills, grinders, saws, and other portable electrical work equipment, regular inspection is a practical way to improve safety, support compliance, and reduce the chance of disruption.

Wassenaar Inspecties performs NEN 3140 inspections for electrical tools and other portable work equipment, as well as existing low-voltage electrical installations. During these inspections, the focus is on whether equipment can be used safely in the workplace and whether it meets the applicable safety requirements. In this article, you will learn what a NEN 3140 work-equipment inspection involves, what inspectors look for in power tools, and how your business can prepare.

What is a NEN 3140 inspection for power tools?

A NEN 3140 inspection is an inspection of electrical low-voltage installations and work equipment used in the workplace. When applied to portable electrical tools and related work equipment, the inspection helps determine whether the equipment is safe to use.

Wassenaar Inspecties offers NEN 3140 inspections for:

This matters because many businesses depend on electrical equipment every day. Tools are moved, dropped, plugged in and unplugged frequently, and used in changing environments. Over time, wear, aging, incorrect use, or unnoticed damage can affect safety.

Why portable electrical tools deserve special attention

Portable tools face different risks than fixed installations. They are handled directly by employees, transported between work areas, and often exposed to dust, impact, or demanding working conditions. That makes them more vulnerable to visible and hidden defects.

Examples of equipment that may benefit from close inspection include:

A structured NEN 3140 inspection helps identify whether a tool still meets safety expectations before it is used in daily operations.

What inspectors look for during a NEN 3140 inspection

A strong inspection combines more than one method. Wassenaar Inspecties states that its inspectors perform a visual check, measure electrical parameters, and review documentation to build a complete picture.

Visual inspection of tools and equipment

The first step is a careful visual inspection. During this part of the process, inspectors check whether there are clear signs that safety may be compromised.

Examples of points reviewed during the visual inspection include:

For power tools, this kind of review can reveal practical issues such as damage, wear, unclear identification, or other visible warning signs that deserve attention.

Measurements and testing

A visual inspection alone is not enough. Wassenaar Inspecties also performs measurements and tests during a NEN 3140 inspection.

These checks assess whether the installation or equipment meets requirements related to:

For businesses, this is valuable because some electrical risks cannot be identified by sight alone. Testing helps confirm whether the protective measures designed to keep users safe still work as intended.

Documentation review

Documentation is also part of a complete NEN 3140 inspection. Wassenaar Inspecties checks available documentation as part of the process and follows a checklist based on the NEN 3140 standard, supported by technical documents.

Good documentation helps show:

At the end of the inspection, the inspector provides a clear inspection report with the necessary information.

What makes an inspection partner valuable?

A NEN 3140 inspection should be thorough, clear, and objective. Wassenaar Inspecties emphasizes several qualities that matter to businesses looking for a reliable inspection partner.

Independent assessment

Wassenaar Inspecties focuses exclusively on inspections. Because the company does not position itself around recommending unnecessary repairs or additional work, businesses benefit from an independent assessment.

Certified expertise

The company states that it has the right certificates to carry out accurate inspections and that its team is familiar with the applicable safety standards.

In addition, all inspectors are expected to have:

Clear reporting

A useful inspection does not stop at identifying issues. Wassenaar Inspecties provides an official report after the inspection, giving businesses a documented basis for follow-up actions.

Which business assets can be inspected besides power tools?

Power tools are only one part of workplace safety. Wassenaar Inspecties also inspects a broader range of business assets, which can help organizations work with one inspection partner across multiple categories.

These include:

This creates natural opportunities to align electrical safety with broader asset inspection planning. Businesses that are already reviewing portable tools may also want to consider related equipment such as ladders, steps, or mobile scaffolding.

How to prepare for a work-equipment inspection

Preparation helps an inspection run more smoothly and makes it easier to act on the outcome.

Before the inspection

Before any inspection takes place, Wassenaar Inspecties sends the client an Inspectierapport. This form must be filled in and signed so there is permission to work in the location and fusebox.

For Scope 12, the company also prefers to receive the following documents where possible:

During the inspection

During the inspection, it is advised that the client:

These simple steps help inspectors work safely and efficiently.

After the inspection

If there is a serious finding, the customer is expected to have the issue resolved by an external company. After that, the Herstelverklaring should be sent back so an inspector can assess whether the repairs were carried out correctly.

Practical safety takeaways for businesses using power tools

If your team uses electrical tools every day, a few practical habits can support safer operation between formal inspections.

1. Treat visible wear as a warning sign

Aging, wear, and damage are specifically relevant during inspection. If equipment shows signs of deterioration, it deserves attention before continued use.

2. Keep safety instructions and markings clear

Clear markings and safety instructions support proper use and reduce confusion in the workplace.

3. Make documentation easy to access

Accurate drawings, maintenance information, and inspection-related records can help create a clearer picture of equipment condition and compliance.

4. Keep inspection access simple

Blocked fuseboxes or disorganized work areas can slow down the inspection process. Good access helps the work move faster.

5. Think beyond one tool

Electrical safety is rarely just about one device. A broader review of installations, tools, and supporting equipment often gives a more realistic picture of workplace risk.

Common questions about NEN 3140 inspections for power tools

Does Wassenaar Inspecties inspect handheld electrical tools?

Yes. Wassenaar Inspecties specifically offers NEN 3140 inspections for electrical tools and other portable work equipment.

What does the inspection include?

The inspection includes a combination of:

Will I receive a report after the inspection?

Yes. Wassenaar Inspecties provides a clear inspection report and also states that an official report is prepared by the inspector after completion.

How long is the waiting time?

The estimated waiting time depends on the size of the installation. For 1 or 2 fuseboxes, the estimated wait time is around 3 weeks.

Service, availability, and client support

A good inspection process also depends on communication. Wassenaar Inspecties is open Monday to Friday, from 09:00-17:00, and is available to help clients with questions about its services and guide them through the inspection process.

The company also notes that payment is usually expected within 2 weeks of receiving an invoice.

For businesses comparing providers, reputation may also play a role. Wassenaar Inspecties has a 4.7 star rating on Google, and inspectors carry a Google Review Card so customers can leave feedback.

Experience across varied locations and organizations

Wassenaar Inspecties has carried out inspections at a range of important locations, including:

The company also routinely inspects large chains such as:

This variety reflects experience across different operational settings where electrical safety and dependable equipment matter every day.

Regional presence and contact points

Wassenaar Inspecties has branch locations in:

Location Address
Breda Schapenweide 1, 4824 AN Breda
Amsterdam Keizersgracht 482, 1017 EG Amsterdam
Bergen op Zoom Zuidzuidehaven 39 A, 4611 HC Bergen op Zoom
Eindhoven Hurksestraat 64, 5652 AL Eindhoven
Leeuwarden Lange Marktstraat 1, 8911 AD Leeuwarden
Den Haag Platinaweg 25, 2544 EZ Den Haag
Enschede Wethouder Beversstraat 185, 7543 BK Enschede
Groningen Leonard Springerlaan 35, 9727 KB Groningen
Rotterdam Corkstraat 46, 3074 AC Rotterdam

Businesses can also contact the company via:

Conclusion: safer tools start with a closer look

Power tools often seem routine until something goes wrong. A structured NEN 3140 inspection helps businesses look beyond day-to-day use and assess whether electrical tools and related work equipment are still safe, compliant, and fit for the workplace.

By combining visual inspection, measurements, testing, and documentation review, Wassenaar Inspecties provides a complete approach to inspecting electrical tools and installations. The result is a clearer view of risk, a documented inspection outcome, and practical next steps when action is needed.

If your organization relies on portable electrical tools, now is a good time to review your inspection planning. Get in touch with Wassenaar Inspecties to discuss a NEN 3140 inspection, request a quote, or arrange an appointment for your electrical tools and work equipment.