According to the HSE guidance note the ,log book should include: • schedules for regular checks and maintenance; • records of checks, maintenance, replacements and repairs; • checks that the LEV is being used in the right way; and • the name of the person making the checks. I’d add: • Who is using it(useful to know if someone makes a claim) • What they are putting up it( useful to know when it is being decommissioned) • Record of daily checks • Reminder to do routine (14 monthly) inspections • Record of any failures The guidance is intended for the off-shore sector but I can’t see why it can’t be applied on dry land. PS I have noticed that in recent years the HSE have started producing guidance for specific industries ( which I suspect pay for it) but they are failing promote it across other industry sectors eg good ergonomic guidance for labs being described as guidance for the pharmaceutical industry.

Hi Pete We use our own logbooks that I designed and printed off. I used the previous LEV thorough inspection report to tell me what pressure each LEV system should be peforming at to control its polutant fume/dust ect. Each LEV is fitted with a manometer that shows its negative pressure reading. the operator checks the manometer daily (and monitors during use) to ensure the LEV is effective. We also use smoke tests and perform our own booth clearance checks with a basic smoke machine (HSE recomended machine ofcourse). My logbooks also record any maintenance which has been carried out such as filter change or duct clean etc - like an car service record When you say unfiltered, I presume it extracts stright to the atmosphere like some welding LEV's - Fit a monometer or perform regular (pre-shift) smoke tests , both are cheap to install (unless you have 100s of LEV's). design a SIMPLE check for the oporators to use - job done If you like, PM me and Ill foreward our template. Good luck

I previously work in a testing laboratory. It had a fume cabinet and two areas with partially enclosed air flow areas. The extraction in all areas was constructed with large fans. We tested the air flow at each station once a year and always got the required air flow. One year after a number of monitoring alarms (methylene chloride) had been set off we were concerned that the fans were working against each other. So we did a smoke test. All fans on and doors / windows shut. Released the smoke and then chaos. My manager and I were blinded in seconds and desperately trying to find the door to get out of the smoke. Once out in the fresh air I managed to reach in and switch one fan off and smoke billowed out of the other two still on. It was comical but demonstrated that although we were testing air flow on individual units, when they were all on it reduced any air flow to almost zero. We reviewed our procedure and retested and it worked. We included a "home made" log book to record all testing, servicing and restrictions in use. It was inspected by the HSE Quarries inspector one year who was complimentary