BS 8520-2:2009

BS 8520-2:2009 Equipment used in the controlled removal of asbestos-containing materials. Negative pressure units. Specification

BS 8520-2 provides negative pressure unit (NPU) manufacturers with a minimum specification for the manufacture of NPUs.

Although the manufacture of NPUs has previously met the expectations of the asbestos removal industry, no specifications or specific guidance existed. It was therefore felt that there was a need to provide the asbestos removal industry with a minimum specification to raise industry standards, with particular attention to health and safety issues.

BS 8520-2 specifies requirements for portable and/or transportable negative pressure units (NPUs) incorporating HEPA filters covered by BS EN 1822 for use in the controlled removal of asbestos-containing materials (ACMs).

BS 8520-2 applies to NPUs designed to create negative pressure within a portable decontamination unit facility or working enclosure and two-part NPUs.

BS 8520-2 does not apply to local exhaust ventilation.

BS 8520-2 is based on PAS 60-2:2004, which is now withdrawn.

Contents of BS 8520-2:

• Foreword
• Introduction
• 1 Scope
• 2 Normative references
• 3 Terms and definitions
• 4 Design and construction
• 5 Control equipment
• 6 Instructions for installation, operation and maintenance
• 7 Technical literature
• 8 Labelling
• 9 Conformity marking
• Annexes
• Annex A (normative) Airflow performance test
• Annex B (informative) Airflow performance test report
• Bibliography
• List of figures
• Figure 1 – Example negative pressure unit
• Figure A.1 – Airflow performance test
• Figure B.1 – Example of an airflow performance test report

Also available:

• BS 8520-1:2009 Equipment used in the controlled removal of asbestos-containing materials. Controlled wetting equipment. Specification
• BS 8520-3:2009 Equipment used in the controlled removal of asbestos-containing materials. Operation, cleaning and maintenance of class H vacuum cleaners. Code of practice