LVHV On-Tool Extraction Testing Toolkit

This free resource pack has been developed to support LEV engineers undertaking COSHH Regulation 9 Thorough Examination and Test (TExT) assessments of LVHV (Low Volume High Velocity) and on-tool extraction systems.

While HSG258 and other LEV guidance documents provide extensive information on conventional LEV systems, practical guidance on testing portable and on-tool extraction systems is often less readily available. This toolkit brings together several practical documents designed to assist engineers with commissioning, testing, record keeping and report preparation.

Included within the resource pack are:

These documents may be downloaded and adapted to suit individual organisations and reporting requirements.

This resource is particularly relevant to:

• P601 Engineers
• LEV Consultants
• Occupational Hygienists
• Construction Industry Professionals
• Dust Control Specialists
• Tool Extraction Suppliers
• Health & Safety Professionals
• Duty Holders

Why LVHV Testing Is Different

Airflows are much lower/velocities and static pressures high.
Conventional LEV methodologies do not always transfer directly.
Tool design significantly affects performance.
Extraction effectiveness depends on tool condition and operator technique.

Industry Challenges

Lack of standardisation.
Different manufacturer approaches.
Variability in filter loading.
Portable unit performance degradation.

Importance of Defensible Testing

The purpose of testing is not simply to generate airflow readings but to determine whether the system is adequately controlling exposure.

Further Resources

Recommended Learning

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