Warrington · COSHH / HSG258
Statutory thorough examination and testing of local exhaust ventilation for Warrington workshops and production sites, keeping fume and dust control compliant with COSHH and HSE guidance HSG258.
Warrington
Warrington is The Wire - a Cheshire town of around 211,000 built on chemicals and steel wire, now anchoring one of the UK's biggest nuclear-engineering clusters at Birchwood.
The work is chemicals and nuclear engineering - the process and blending plants, the nuclear and energy-engineering units at Birchwood, and the wire and metal fabrication - across Birchwood Park and the Omega estate, with the bodyshops, logistics and food producers between them.
Each of those Warrington processes throws fume, dust, mist or vapour into the workplace air, and COSHH demands it is captured at source - that capture system is local exhaust ventilation, and it must be thoroughly examined and tested at least every fourteen months. We cover the lot, from the Birchwood units to the one-bench Warrington workshops, taking capture and face-velocity readings and leaving a clear pass or remedial verdict with the hoods labelled.
By sector
If a process captures fume, dust, mist or vapour at source, that capture system is LEV - and across Warrington and the wider Cheshire it is your evidence under COSHH.
Vapour and mist extraction on the chemical blending and process lines - corrosive and solvent fume that quietly eats a duct from the inside.
Fume, grinding and containment extraction on the nuclear and energy-engineering lines at Birchwood, where process fume and dust need capture proven.
Fume and dust extraction on the wire-drawing and fabrication lines that carry the town's steel-wire heritage.
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.
Spray-booth and prep-bay extraction at Warrington bodyshops. Two-pack paints release isocyanates - the leading cause of occupational asthma - so booth airflow is examined to its design figure.
Fume-cupboard face-velocity testing for the University of Chester Warrington campus and Warrington Hospital, to the containment their work demands.
On the ground in Warrington
We are out under Warrington's extraction every week. The proof that matters is the jobs, not a stock photo.
A chemical blending and packaging plant in Warrington had the flexible extraction hose on a solvent-drum dispensing line cracked and leaking condensate from an unsealed joint. We ran a pitot-tube traverse inside the rigid branch and measured the hood capture velocity. It failed on the broken system integrity and the compromised transport velocity. It was a tier-1 chemical site, so it was an on-site safety escort and a mandatory briefing before any tools came out.
The test
Under HSG258 a statutory LEV test is no visual once-over. For a Warrington system it has to answer three things - whether the system is sound, whether it still draws at the hood, and whether that draw holds to what it was designed to deliver.
Ductwork, hoods, filters, fans and dampers checked for damage, blockage and leakage across the Birchwood 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 a Warrington line.
Where exposure is in question - a chemicals and process 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.
On most Warrington sites - the Birchwood units and the smaller workshops alike - it is the fourteen-month clock that bites: let it lapse and the system is non-compliant that day, however well it seems to run. We examine it, tag each hood with its status and next-due date, and hand over the report an HSE inspector or insurer will want. Where something fails you get the reading, the cause and the remedy - never just a red sticker.
How it runs
Full visual and structural check of every hood, duct run, filter and fan across the Warrington 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 Warrington duty-holder.
Each system tagged with status and next-due date, so compliance is visible on the Omega 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. A chemicals and process bay, a nuclear and energy engineering bench and a lab fume cupboard can each sit on a different interval - we set the right one for every system.
Yes. We plan testing around production shifts at the Birchwood units, term-time access at the Warrington university labs, and normal hours at smaller workshops, so the examination never stops the line.
Yes - the industrial estates and workshops around Birchwood and Omega, the university and hospital labs, and the wider Cheshire.
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 Warrington, but a Birchwood fabrication shop and a Stockton Heath canopy are kept as the separate jobs they are.
Yes. A new spray booth or fume-arm install at a Warrington 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.
Chemicals and process, nuclear and energy engineering, wire and metal fabrication, welding and fabrication, vehicle body and paint, and the labs of the university campus and hospital - the trades clustered around Birchwood and Omega and across the wider Cheshire.
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 Birchwood or a smaller Warrington workshop needs for their COSHH file.
Phoenix Duct Clean · by the numbers
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