Due to concerns over exposure to lead, the soldering industry has moved toward the use of lead free solders; these tend to be a tin/copper alloy. In order to compensate for the removal of lead another flux substance has to be used to aid the flow of the solder. One of the most commonly used fluxes is rosin or colophony. When heated, rosin creates fumes (known as Rosin Based Solder Flux Fume – RBSFF). This fume is composed of two fractions, the particulate fraction contains rosin sublimates and thermal decomposition products, which are predominantly a mixture of diterpentine acids, this fraction makes up approximately 90 % of the total fume. The remaining gaseous phase of the fume is composed of low molecular weight organic compounds including acetone, methyl alcohol, aliphatic aldehydes and other hydrocarbons.
According to the HSE’s Occupational Lung Disease in Great Britain 2017 report, 12,000 lung disease deaths each year are estimated to be linked to past exposures at work. This has led to increasingly stringent guidelines and statutory requirements for Local Exhaust Ventilation (LEV). HSE published the third edition of HSG258 ‘Controlling airborne contaminants at work: A guide to local exhaust ventilation (LEV)’ in 2017. This guide provides guidance on the design of new local exhaust ventilation (LEV) equipment. It describes the principles of deciding on, designing, commissioning and testing effective LEV.
As LEV is a control measure under COSHH Regulations it must be regularly and thoroughly inspected and tested. As stated above, LEV regulations outline that any employer who uses local exhaust ventilation to control hazardous substances must ensure that it is operating effectively. Local Exhaust Ventilation Testing is a legal requirement in the UK. All equipment must be thoroughly examined and tested by a competent person at least every 14 months to ensure employees are safe.
Equipment that draws pollutants from an operation or process in the working environment. Made up of an inlet like a hood, slit, arm, cabinet or booth. This will be located near to or close to the area of the substance release. All suchlike equipment needs to be connected by ducting and a fan to enable the movement of air. The removed air passed through a filter or is extracted to atmosphere away from the workplace. How Welding Supplies Direct can help ? WE will carry out a thorough tests in line with COSHH Regulation 9 as detailed in HSE Guide HSG258 Our levels of service can be tailored to your Companies needs. However, most clients choose to take advantage of by combining servicing with the LEV testing. Read extra details on LEV Testing.
Thousands of British workers contract occupational lung diseases such as occupational asthma and chronic obstructive pulmonary disease each year. Many people die or are permanently disabled by these conditions and are unable to work. People develop these diseases because they breathe in too much dust, fume or other airborne contaminants at work, often because control measures do not work well enough. Most industries are affected, including woodworking, welding, paint-spraying, stonemasonry, engineering and foundry work.