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Table of Occupational Exposure Limit values (in mg/m3)
The following table shows the Occupational Exposure Limits (OEL) in mg/m3 for quartz, cristobalite and tridymite in application in European countries
Country Austria Belgium Denmark Finland France
Germany Greece Ireland Italy
Luxembourg Netherlands
Norway
Portugal Spain
Sweden Switzerland United Kingdom
OEL Name Maximale ArbeitsplatzKoncentration
Adopted by Bundesministerium fur Arbeit und Soziales
Threshold Limit Value
Ministere de l'Emploi et du Travail Direktoratet fot Arbeidstilsvnet
Occupational Exposure Standard Empoussierage de reference Valeur limite de Movenne d'Exposition
National Board of Labour Protection Ministere de l'Industrie (RGIE) Ministere du Travail
Grenzwert nach TRGS 900
Threshold Limit Value Grenzwert nach TRGS 900 Maximaal Aanvarde Concentratie Administrative Normer (8hTWA) for Forurensing I Arbeidsmilj0et
Bundesministerium fur Arbeit Legislation for mining activities 2002 Code of Practice for the Safety, Health & Welfare at Work (CoP) Associazone Italiana Degli Igienisti Industriali Bundesministerium fur Arbeit Ministerie van Sociale Zaken en Werkgelegenheid Direktoratet for Arbeidstilsynet
Threshold Limit Value
Instituto Portuges da Qualidade, Hygiene & Safety at Workplace
Valores Limites
Instituto Nacional de Seguridad e Higiene en el Trabaio Instrucciones de Tecnicas Complementarias (ITC) Reglamento General de Normas Basicas de Seguridad Minera
Yrkeshvgieniska Gransvarden Valeur limite de Movenne d'Exposition Maximum Exposure Limit
National Board of Occupational Safety and Health Health & Safety Executive
Quartz (q)
0,15 0,1 0,1 0,2 5 or 25k/Q 0,1 0,15 0,1 0,05 0,05 0,15 0,075 0,1
0,1 0.1 0,1 5 or 25k/Q 0,1 0,15 0,3
Cristobalite (c)
0,15 0,05 0,05 0,1
Tridymite (t)
0,15 0,05 0,05 01
0,05 0,15 0,05 0,05 0,05 0,15 0,075 0,05
0,05
0,05 0,15 0,05 0,05 0,05 0,15 0,075 0,05
0,05
0,05
0,05
0,05 0,15 0,3
0,05 0,15 03
Q : quartz percentage Source : Adapted from IMA-Europe Date : August 2005, updated version available at http://www.ima-eu.org/en/silhsefacts.html OELs are applicable to 100 % quartz, cristobalite or tridymite. Some countries have special rules for mixed dust, e.g. in France the following equation is applied: Cns/5 + Cq/0.1 + Cc/0.05 +Ct/0.05 < 1 (C = mean concentration, ns = non silicogen) k=1