LEL Calibration
In recent generations of press designs, gas monitors are installed to constantly monitor solvent levels within dryers and exhaust ductwork. If not already installed, then we would install them as part of the optimisation process. The solvent is measured as a function of safety as %LEL (a percentage of the lower explosive limit) normally using catalytic or infra red sensors. Since they are important safety devices, it is essential to establish and maintain a calibration regime. We recommend calibration every 3 months when installed in dryers not only because of their importance but potential for contamination and reduced sensitivity.
EPM install, calibrate and replace most types of g...
EPM install, calibrate and replace most types of gas monitors and sensors including MSA, Honeywell (Sieger/Zellweger), Heck, etc. During the visit, we not only calibrate but also check other essential aspects of their operation. This includes checking set-up parameters, alarm functions, e.g. machine stop on high LEL alarm, we check for sensor cleanliness and correct sampling from ducts e.g. sampling pipes are correctly connected without leaks. Using solvents in printing results in exposing Operatives to hazardous vapours. The Control of Substances Hazardous to Health Regulations (1994) (COSHH) includes Regulation 7 that requires LEV's ( Local Extract Ventilation) to be installed to control the risk. Regulation 9 requires that the control measures be assessed every 14 months maximum to ensure that they are operating correctly and efficiently to minimise the exposure risk.
- EPM carry out the assessment in two parts:-
- mechanical inspection
- monitoring Operator exposure levels
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