What Information is required in a Local Exhaust Ventilation (LEV) assessment report?

To comply with Regulation 9 of the COSHH Regulations 2004, a thorough examination and test of LEV must be carried out at least every 14 months [Local Exhaust Ventilation plant - dust / fume extraction].

The Health & Safety Executive (HSE) Approved Code of Practice requires that the report contains at least the following information:

  • Name & Address of the employer responsible for the plant

  • Identification of the LEV plant

  • Location of the LEV plant

  • Identification of the Process

  • Identification of the hazardous substance concerned

  • Date of the last thorough examination and test

  • Conditions at time of test, whether normal production or special conditions

  • Intended operating performance of the LEV for adequately controlling the hazardous substance for the purpose of Regulation 7

  • If there is no data available for the intended operating performance a further assessment is needed to show compliance with Regulation 7

  • Whether the LEV achieves the designed performance

  • If not, the adjustments or repairs required to achieve that performance

  • Methods used to make the judgements

  • Date of thorough examination and test

  • Name of person carrying out the examination and test

  • Job Title of person carrying out the examination and test

  • Employer of person carrying out the examination and test

  • Signature of, or other acceptable means of identifying the person carrying out the examination and test

  • Details of repairs carried out

  • The details should be completed by the employers responsible for the LEV plant

  • The effectiveness of the repairs should be proved by a re-test

  • Location or position of enclosures/hoods

  • Maximum number of hoods/enclosures to be in use at any one time

  • Static pressure behind each hood or extraction point

  • Face velocity at each hood or extraction point

  • Ducting dimensions

  • Ducting transport velocity

  • Ducting volume flow

  • Filter/Collector – Specification

  • Filter/Collector – Volume flow

  • Filter/Collector – Static pressure at inlet

  • Filter/Collector – Static pressure at outlet

  • Filter/Collector – Static pressure across filter

  • Fan – Specification

  • Fan – Volume flow

  • Fan – Static pressure at inlet

  • Fan – Direction of rotation

  • Does the system return exhaust air to the workplace

  • If exhaust air returned to workshop – Filter efficiency

  • If exhaust air returned to workshop – Concentration of contaminant in returned air

  • Results of Examination and test compared with Assessment carried out under Regulation 6

  • Results of Examination and test compared with the requirements of Regulation 7

  • Section for Employer responsible for the LEV plant to complete with details of repair

  • Section for Employer responsible for the LEV plant to complete with effectiveness of repair proved by re-test

  • Test undertaking by a competent person. The test engineer must have adequate knowledge, training and expertise in examination methods and techniques. He must also be competent in the assessment of LEV repair requirements to be able to identify the repairs required.

  • HSG54 states that Sketch of Plant Layout is also required.

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