Abstract
When the one-pass collection efficiency of each size of particles of the sound pressure machine equipped with a glass fiber HEPA filter to get rid of friable asbestos at the asbestos elimination field was evaluated, the collection efficiency of those with the size of 0.3um was examined to be 98.91%. That of the particles of 0.5um size was proved to be 99.21% on average, which is a little bit higher than that of 0.3um size. The 1.0um particles showed 100% of efficiency, and the collection efficiency of each size had statistically meaningful differences.
Highlights
Asbestos is a mineral fiber found in nature
Matters concerning a total of five HEPA filters, divided by the specifications and type classification, test methods, measurement equipment, test methods is shown in each standard
Specification of sound pressure machines is based on approval certification that requires(KOSHA Guide H-532009) [9,10,11] 1) HEPA filter installation, 2) installation of pre-treatment filter in HEPA filter front, 3) installation of filter differential pressure gauge, 4) successful leak test, 5) installation of air blower in filter rear and 6) installation of equipment preventing scattering during mobility
Summary
Asbestos is a mineral fiber found in nature It is a fireresistant building material and comes in such different forms as asbestos tile and slate, etc. It is widely used as a heat-resistant industrial good in household products, electric goods and jets. Use of anti-scattering products for high-risk asbestos work classified under the most stringent Class H in the UK in terms of carcinogenicity and hazard are advised in order to keep asbestos particles from scattering indoors [1, 2]. An indicator that grades anti-scattering products based on their removal efficiency, performance evaluation and controls high-risk groups is needed
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