Respirable crystalline silica definition

Respirable crystalline silica means quartz, cristobalite, and/or tridymite contained in airborne particles that are determined to be respirable by a sampling device designed to meet the characteristics for respirable- particle-size-selective samplers specified in the International Organization for Standardization (ISO) 7708:1995: Air Quality - Particle Size Fraction Definitions for Health-Related Sampling.
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Respirable crystalline silica means quartz, cristobalite, and/or tridymite contained in airborne particles that are determined to be respirable by a sampling device designed to meet the characteristics for respirable-particle-size-selective samplers specified in the International Organization for Standardization (ISO) 7708:1995: Air Quality – Particle Size Fraction Definitions for Health-Related Sampling. The definition in the rule is very similar to the proposed definition with one modification. OSHA changed the wording from “means airborne particles that contain quartz, cristobalite, and/or tridymite and whose measurement is determined by a sampling device. . .” to “means quartz, cristobalite, and/or tridymite contained in airborne particles that are determined to be respirable by a sampling device. . .” to make it clear that only that portion of the particles that is composed of quartz, cristobalite, and/or tridymite is considered to be respirable crystalline silica.
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Respirable crystalline silica means the mass fraction of inhaled crystalline silica particles penetrating to the unciliated airways. The respirable convention, which is a target specification for sampling instruments, is defined according to § 5.3. of European Standard EN 481 Workplace Atmospheres - Size fraction definition for measurement of airborne particles.
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Examples of Respirable crystalline silica in a sentence

  • Respirable crystalline silica (quartz) can cause silicosis, a fibrosis (scarring) of the lungs.

  • Silicosis Respirable crystalline silica (quartz) can cause silicosis, a fibrosis (scarring) of the lungs.

  • The objectives of the specific Respirable crystalline silica related health surveillance are to: • Detect adverse health effects early; • Establish a baseline from which to assess changes that may develop; • Prevent further harm being caused.

  • It may also enable to collect representative and comparable data on occupational dust exposure levels among companies where Respirable crystalline silica exposure is experienced in order to produce data on health risk assessment from occupational dust exposures and to start the elaboration and production of exposure data like “job-exposure matrices” available for possible further epidemiological survey.

  • Employers shall in the first instance carry out a workplace risk assessment as it is described in the Good Practice Guide, to identify where Employees may be at specific risk from health hazards related to Respirable crystalline silica.

  • Respirable crystalline silica dust may cause severe and permanent lung damage.

  • Respirable crystalline silica differs in many respects — including because of its natural abundance — from the situations normally dealt with under the workers safety legislation.

  • The primary health risk of exposure to dust containing Respirable crystalline silica is a respiratory disease called silicosis.

  • NTP: Respirable crystalline silica, primarily quartz dusts occurring in industrial and occupational settings, is classified as Known to be a Human Carcinogen.

  • This Agreement aims at - protection of health of Employees and other individuals occupationally exposed at the workplace to Respirable crystalline silica from materials / products / raw materials containing crystalline silica.