This competence-based course follows the BOHS P602 syllabus.

It is designed to provide the methodology, theoretical and basic practical knowledge to enable delegates to be able to design basic LEV systems which will control hazards.

The course also considers the requirements for commissioning testing and the preparation of suitable records.

Learning objectives

After the course delegates should be able to:

• Demonstrate awareness of principles of good control practice and the role of LEV
• Understand the importance of design considerations and the basic principles and main elements of an LEV system
• Able to design basic LEV systems
• Undertake commissioning tests to determine if the system is effective and operating to design specification
• Prepare suitable records of the basis of design

Prerequisites

It is assumed that delegates will have had day to day dealings with Local Exhaust Ventilating plant systems.

Delegates must be competent in basic maths / algebra (areas, square roots etc).

No other specialist knowledge is required.

Who should attend?

Engineers, Supervisors, Managers, Health and Safety professional and Technical staff who have day to day dealings with the specification, design, testing, contract management, and occupational hygiene aspects of LEV plant.

Tutor

Bill Cassells
BSc MPhil CEng CMIOSH FIPlantE FSOE FRSH RSP

Day 1 – Workplace Control Principles

• Sources of Exposure
• Hierarchy of Control Options
• Practical Application of Control Measures
• Testing for Adequacy / Performance Evaluation
• CoSHH Risk Assessment Implications
• Types of Systems in Use
• Hood Design
• Duct Design (sizing / config / design)
• Fans (types / specification / applications / design limitations)

Day 2 – Design of LEV Systems (1)

• Filtration (specifying / performance characteristics / limitations)
• Balancing systems
• Flammable materials
• Discharge Arrangements
• Make-up Air / Replacement Air
• Recirculation Systems
• Behaviour of hot plumes
• Use of Instruments and Flow Visualisation Techniques
• Fault Diagnosis

Day 3 – Design of LEV Systems (2)

• Calculation of Pressure Losses
• Fan Selection
• Design Exercise 1 – Simple Single Branch System
• Design Exercise 2 – Design of Multi-branch System
• Course Review

Day 4 – Examination / Assessment

• Short Form Answer Examination
• Practical Assessment