Oxford · COSHH / HSG258
Statutory thorough examination and testing of local exhaust ventilation for Oxford workshops and production sites, keeping fume and dust control compliant with COSHH and HSE guidance HSG258.
Oxford
Oxford is the city of dreaming spires, a city of around 162,000 whose universities, teaching hospitals and MINI plant give it one of the densest concentrations of research labs in the UK.
The work is science and automotive - the body, paint and assembly of the MINI plant at Cowley, the vast fume-cupboard base of the university, hospital and science-park labs, and the publishing and fabrication units - across Cowley and the Osney Mead estate.
Every one of those Oxford processes puts fume, dust, mist or vapour into the air, and COSHH requires it controlled at source - which means local exhaust ventilation, thoroughly examined and tested at least every fourteen months. We test the LEV across all of it - from the Cowley units to the smaller Oxford workshops - with capture and face-velocity readings, a clear pass or remedial outcome and system labelling.
By sector
Any system that draws fume, dust, mist or vapour off at source counts as LEV, and across Oxford and the rest of Oxfordshire it is the evidence COSHH expects you to hold.
Spray-booth, prep-bay and body-shop extraction across the automotive lines at Cowley. Two-pack paints release isocyanates - the leading cause of occupational asthma - so booth airflow is examined to its design figure.
Fume-cupboard and containment extraction across the university, hospital and science-park labs, where capture at source is the whole control measure.
On-torch extraction, fume arms and downdraught benches across the fabrication units. Since the HSE's 2019 reclassification, all welding fume - mild steel included - is treated as carcinogenic.
Solvent and mist extraction on the publishing and print lines - vapour a loaded filter stops holding.
Flour-dust, steam and mist extraction across the food producers, where organic dust is a health and a combustion risk.
Fume-cupboard face-velocity testing for the University of Oxford, Oxford Brookes and the John Radcliffe Hospital, to the containment their work demands.
On the ground in Oxford
We are out under Oxford's extraction every week. The proof that matters is the jobs, not a stock photo.
A biomedical research facility in Oxford had a Class II biological safety cabinet with a fluctuating face-velocity profile - a draught from an open window nearby was interfering with it. We shut the window, ran a full multi-point anemometer grid trace and did a smoke-visualisation test. It failed at first purely on the draught interference, then passed cleanly once the room was properly closed up. It was an ultra-sensitive facility, so every tool got wiped down with IPA before it crossed the threshold.
The test
An HSG258 statutory LEV test goes well beyond a walk-round look. On an Oxford system it has to establish three things - that the plant and ductwork are sound, that the hoods still capture, and that the capture still meets the figure the system was designed around.
Ductwork, hoods, filters, fans and dampers checked for damage, blockage and leakage across the Cowley units - the faults that quietly kill capture.
Face and capture velocities, static pressures and airflows measured at each hood with calibrated instruments - numbers, not opinion.
Readings compared to the system's commissioning figures, so drift from as-designed is caught before it becomes a failure on an Oxford line.
Where exposure is in question - an automotive body and paint process, say - sampling confirms whether control is actually protecting the people at the process.
The duty
COSHH Regulation 9 puts a hard duty on the employer: any LEV controlling a hazardous substance must have a thorough examination and test at least every fourteen months, with records kept for five years.
Across most Oxford sites - the Cowley plant and the smaller units alike - it is the fourteen-month interval that trips people up, because a lapsed test leaves the system non-compliant from that date whatever its real condition. We run the examination, mark every hood with its result and next-due date, and produce the report your insurer or an HSE inspector will look for, and any failed point comes back with its reading, its cause and the fix rather than a bare red tag.
How it runs
Full visual and structural check of every hood, duct run, filter and fan across the Oxford site.
Calibrated velocity, pressure and airflow readings at each extraction point.
A COSHH-compliant report: results against benchmark, clear pass or fail, and plain-English actions for the Oxford duty-holder.
Each system tagged with status and next-due date, so compliance is visible on the Osney Mead floor.
Questions
Under COSHH Regulation 9, most local exhaust ventilation needs a thorough examination and test at least every 14 months, with higher-risk processes more often. An automotive body and paint bay, a science and biotech labs bench and a lab fume cupboard can each sit on a different interval - we set the right one for every system.
No. LEV testing is a statutory examination of fume and dust control to COSHH and HSG258, with capture and face-velocity readings; TR19 is kitchen grease and fire risk. We do both across Oxford, but a Cowley fabrication shop and a Cowley Road canopy are kept as the separate jobs they are.
Yes. A new spray booth or fume-arm install at an Oxford workshop needs a commissioning test to prove it performs to its design figures before it goes into service - we measure it and document the baseline the 14-month clock then runs from.
A dated report to the HSG258 method, the readings taken, a pass or remedial outcome for each hood, and system labelling - the evidence a duty-holder at Cowley or a smaller Oxford workshop needs for their COSHH file.
Yes. Each hood is labelled with its status and next-due date, and you get the HSG258 report and system schematic for your COSHH file - the record an HSE inspector visiting a Cowley unit will ask to see.
Automotive body and paint, science and biotech labs, welding and fabrication, publishing and print, food manufacturing, and the fume cupboards of the universities and hospitals - the trades clustered around Cowley and Osney Mead and across the wider Oxfordshire.
Yes. We plan testing around production shifts at the Cowley units, term-time access at the Oxford university labs, and normal hours at smaller workshops, so the examination never stops the line.
Phoenix Duct Clean · by the numbers
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