LEV Testing


Believe it or not, thousands of people die in Britain every year due to airborne contaminants inhaled at work which is why LEV Testing is such a key service we offer at APS UK Ltd. Find out more

If your company has processes that produce dust, mist, fume, gas or vapour, there may be a risk to your staff and LEV testing should be considered.

If this is the case, you will need to provide Local Exhaust Ventilation (LEV). This needs to be correctly specified, installed and maintained if it is to protect your workforce.

Local Exhaust Ventilation is used in many businesses throughout the UK as an integral part of their risk control, others view LEV as a series of pipes that move air from point A to  point B. Whatever the opinion, the HSE is aiming to improve exposure controls for all by launching their revised guidance on LEV testing and design.  Some of the statistics are startling to say the least and certainly need to be improved by better understanding and implementing of LEV testing and design.

  • 8.5% of cancer deaths in men and 1.5% in women are attributable to work
  • Over 7000 deaths each year.  The amount of people killed by occupational cancer is 30 times more than people killed by industrial accidents
  • 1500-3000 people develop occupational asthma each year
  • There are 140,000 LEV systems in the UK
  • Only 40% are tested on an annual basis – 60% have no inspection
  • Much less than 40% are checked effectively
  • More than 500,000 people rely on LEV to protect their health

In accordance with the COSHH Regulations and HSE Guidance we perform thorough examination and testing of local exhaust ventilation systems.

LEV Testing

We are able to tailor our service to suit your needs, whether you require a service and test to be carried out together, or independently, and can offer two levels of report on LEV testing.

APS provide a comprehensive LEV testing and inspection service with full recommendations in accordance with COSHH Regulation 9 (5th Edition, 2002), and HSE HSG258 (Controlling airborne contaminants at work; a guide to local exhaust ventilation) 2008.

Our Engineers are P601 and P602 qualified – a British Occupational Hygiene Society standard.

P601 Certificate Numbers: 070510/003; 180610/016. P602 Certificate Numbers 260410/006; 260410/005

Employers Responsibilities

All employers who provide engineering equipment to control substances hazardous to health have a legal requirement to examine and test this equipment in order to comply with Regulation 9.

The employer must ensure that LEV equipment is maintained in an efficient state, in efficient working order and in good repair. A thorough examination and test should be carried out at least once every 14 months including all oil mist, welding fume, smoke and dust extraction units that you currently have on site.

Other systems require much more frequent testing.

It is also the duty of the employer to keep a suitable record of the examination for a period of at least 5 years. This record should also include details of repairs carried out as a result of the examination and test.

What COSHH and the HSE say

Specialising in the design and supply of ducring systems (Materials Handling Systems) and Dust/Fume Extraction Systems in many varied industries, we are able to provide ductwork in diameters ranging from 80mm to 1000mm, manufactured from either galvanised or stainless steel.

COSHH Regulations require that in accordance with Regulation 7, the exposure of employees to substances hazardous to health be either prevented, or where that is not reasonably practical, adequately controlled. In accordance with Regulation 8 there is a duty on the employee to use LEV provided and to report any defects observed.

Regulation 9 requires that any control measure taken to comply with Regulation 7 must be maintained in an efficient state, in efficient working order and in good repair.

APS can provide comprehensive testing services to include a fully documented test certificate, drawings and a system logbook. This is normally supported by a site visit and a review of findings to determine the next steps for non-complying systems.

This stage is vital to avoid certificates being submitted and then leaving the client to deal with any repairs. Our aim is to identify what needs to be done and inform the client on how best to carry out the improvements. This is normally a staged process dependant on the severity and consequence of the failure.

Our inspection and report will include the following:

Conclusion on control effectiveness
Visual Appraisal of the LEV System
Final assessment of level of control
A summary action plan
Qualitative assessment of effectiveness

Measurements of airflows and comparisons with original commissioning data
Labelling of tested equipment showing pass/fail status
Detailed LEV user manual
Logbook with details of check and maintenance activities
LEV Commissioning Report

LEV Testing
LEV Testing

Maintenance and Service

In accordance with COSHH Regulations 9 the employer must ensure “A thorough examination and test should be carried out at least one every 14 months”.


All machines must be regularly maintained, and even if you have a maintenance department, it is invariably too overloaded to keep an eye on the waste system.


So why not consider passing that responsibility to us. At present, many large and small companies use our service. Let us eliminate the emergency call, plan the maintenance, and prevent the expensive breakdown.

Even if you have a system installed by another company, we are happy to give you a competitive quotation to service your plant on a one-off basis or as part of a Maintenance Contract.

All our service agreements can be tailored with individual needs, such as visit intervals or a diagnostic check each month.

All services include full documentation, checklists, analysis reports and operator recommendations.

Prevention before you need a costly cure

We understand that manufacturing – not maintenance – is your main focus. Allowing you to concentrate on your strengths, we will provide you with the best and most complete portfolio of services.

Preventative maintenance services minimize your downtime and maximize your bottom line. Whether competent advice or a full service solution, we take care of all your needs, whatever they might be.

The work, in accordance, with HSG258 should only be carried out by competent personnel.

We will develop a custom-made maintenance scheme for you. We will create added value by reducing your total cost of ownership.

We will offer you a service to ensure your filtration system operates under optimal conditions – cost effectively and at the highest quality level.

A comprehensive range of services are available, especially designed to keep your production at peak performance and at the lowest total cost of ownership.

We can provide you with all your filter replacements irrespective of the type or make, for most applications, and will reduce your cost of ownership, simplify your purchasing process, reduce working capital and eliminate the number of suppliers providing replacements.

As well as the HSE258 (Controlling airborne contaminants at work; a guide to local exhaust ventilation) guidance note to which we work in accordance with, there are also some more useful guides available from the HSE, free of charge, and aimed particularly at the employer, these are:

Health and Safety Executive – LEV Links

Clearing the air > A simple guide to buying and using local exhaust ventilation (LEV) – view pdf document >

Time to clear the air > A workers’ pocket guide to local exhaust ventilation (LEV) – view pdf document >

Controlling airborne contaminants at work > A guide to local exhaust ventilation (LEV) – view pdf document >

Working with substances hazardous to health > A brief guide to COSHH – view pdf document >

Institute of Local Exhaust Ventilation Engineers (ILEVE) – view pdf document >


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