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Workshop Exposure Scenarios Workshop Exposure Scenarios 21 October 2011 0 Workshop Exposure Scenarios Disclaimer This information does not constitute legal advice but is intended for guidance only. While the information is provided in utmost good faith and has been based on the best information currently available, it is to be relied upon at the user’s own risk. No representations or warranties are made with regard to its completeness or accuracy, and no liability will be incurred for damages of any nature whatsoever resulting from the use of or reliance on the information. 1 Workshop Exposure Scenarios Identify your Use in the ES • Use Descriptors System E R i? CH • Map your Uses A • Identify most suitable ES • Identify obvious mismatches • PROC Hierarchy 2 Workshop Exposure Scenarios Use Descriptor System SU Sector of Use PC Product Category PROC Process Category Indicator Rules Where the substance is used Industrial, professional, and/or Consumer and eventual supplementary sectors of end-use Type of product the substance is used in How the substance is used Article Category Type of article the substance is used in Environmental Release Category How the substance is released in environment AC ERC Preparations/mixtures (by market sector) Application techniques or process types for industrial and professional use Article type in service life and waste life for consumers and workers Conditions of use from environmental perspective For further information on use descriptors please refer to ECHA document “Guidance on Information Requirements – Part D-3 and D-4 Link: http://guidance.echa.europa.eu/docs/guidance_document/information_requirements_r12_en.pdf?vers=20_08_08 3 Workshop Exposure Scenarios Describe your own Use with Use Descriptors: step 1 Select appropriate sector of use Choose among the following mandatory descriptors: • SU3: industrial uses (e.g. bleaching chemical in paper industry) • SU21: private household uses (e.g. painting the wall as a private person) • SU22: professional uses (e.g. painting house on commercial basis) Supplementary descriptors for Sectors of end use may be added 4 Workshop Exposure Scenarios Describe your own Use with Use Descriptors: step 2 According to your SU selection assign additional descriptors, applying the following rules: • [SU3] – Industrial use: assign at least process category (PROC) and environmental release category (ERC) • [SU22] - Professional use (worker’s end-use): assign at least process category (PROC) and environmental release category (ERC) • [SU21] - Consumer end-use: assign product category (PC) or article category (AC) and environmental release category (ERC) 5 Workshop Exposure Scenarios Map your uses 6 Workshop Exposure Scenarios Input parameters for calculation of Safe Use 7 Workshop Exposure Scenarios Downstream User compliance check Step 1: Identify your Use in the Exposure Scenario (ES) • Select ES which (closest) matches your own situation • Compare your use(s) with the Short Title and the Use Descriptors given in the first section of the ES Step 2: Check Operational Conditions (OC) and Risk Management Measures (RMM) • Compare OC and RMM described in selected ES with your own situation NOTE: Step 2 is not part of this presentation, however it is an essential step to ensure Safe Use 8 Workshop Exposure Scenarios Identifying your Use in the Exposure Scenario • Start with ES from your main supplier • Select ES which (closest) matches your own situation, via table of content when this is provided • Compare your own use(s) with the Short Title and the Use Descriptors given in the first section of the selected Exposure Scenario • Find identical ES from each supplier of a given substance: same OC and RMM (not part of this presentation) • Compare described uses from identical ES from different suppliers 9 Workshop Exposure Scenarios Example of table of content ES no ES Short title / Identified use Main Supple- Product Process user mentary Category category group PROC1, 2, 3, 1 Manufacture SU3 SU8, SU9 4, 8a, 8b, 15 2 Distribution SU3 SU10 PROC1, 2, 3, 4, 5, 8a, 8b, 9, 15 PROC1, 2, 3, 4, 5, 8a, 8b, 9, 3 Formulation SU3 SU10 14, 15 PROC1, 2, 3, 4, 5, 7, 8a, 8b, 4 Coatings SU3 PC9a 9, 10, 13, 15 PROC1, 2, 3, 4, 5, 8a, 8b, 10, 11, 13, 15, 5 Coatings SU22 PC9a 19 6 Coatings SU21 PC9a PROC1, 2, 3, 4, 8a, 8b, 10, 8 Cleaning agent SU22 PC35 11, 13 9 Cleaning agent SU21 PC35 n …… …… …… …… …… nn Isolation articles SU21 - Environ Article mental category category ERC1 - ERC2 - ERC2 - ERC5 - ERC8c, 8f ERC8c, 8f - ERC8a, 8d ERC8a, 8d …… …… ERC11b AC4 10 Workshop Exposure Scenarios Select Sector of Use 11 Workshop Exposure Scenarios ES is structured into 4 sections Sections of the Exposure Scenario 1 . Titel of Exposure scenario 2. Operational conditions and risk management measures Contributing scenario controlling environmental exposure for….. Contributing scenario controlling worker exposure for….. 3. Exposure estimation and references to its source 4. Guidance to Downstream users wheather he works inside the bounderies set by ES Additional good practice advice beyond the REACH CSA 12 Workshop Exposure Scenarios Section 1 of the ES 13 Workshop Exposure Scenarios Short Title examples Manufacture of substance Distribution of substance Formulation & (re)packing of substances and mixtures Uses in Coatings Use in Cleaning Agents Use in Oil and Gas field drilling and production operations Lubricants Metal working fluids / rolling oils Use as binders and release agents Use as a fuel Functional Fluids Use in laboratories Water treatment chemicals Mining chemicals 14 Workshop Exposure Scenarios One ES can cover several steps One ES can cover all process steps at distributor / formulator site and contains: ”Contributing scenario”(1) for environmental exposure from the site - and for the individual process steps ”Contributing scenario” (2) for exposure of worker at closed batch mixing process (PROC3)... ”Contributing scenario” (3) for exposure of worker at laboratory control (PROC15)... ”Contributing scenario” (n) for exposure of worker at filling process (PROC 9)… ”Contributing scenario” (nn) for exposure of worker at nn process … 15 Workshop Exposure Scenarios Obvious mismatches - Missing PROC 8a, 8b and 9 (Transfer) - Missing formulation stage - General experience: Use Descriptor system is widely used and provides a good first indicator 16 Workshop Exposure Scenarios PROC Hierarchy http://www.cefic.org/Documents/IndustrySupport/Cefic%20communication%20on%20extSDS_130711.pdf Page 19: Indication of which PROCs may be covered by other PROCs. 17 Workshop Exposure Scenarios PROC Hierarchy Example 1: If PROC 19 is safe for the industrial use of a medium volatile liquid for 1-4 hours as pure substance with no Respiratory Protective Equipment but with LEV then PROC 10 and PROC 13 are also safe for exactly the same set of conditions:. PROC Type of setting Duration of Use of ventilation ? activity per day Efficiency of respiratory Total Exposure protection (%) (mg/kg/day) PROC 19 PROC 10 PROC 13 PROC 19 PROC 10 PROC 13 industrial industrial industrial industrial industrial industrial 1 - 4 hours 1 - 4 hours 1 - 4 hours 1 - 4 hours 1 - 4 hours 1 - 4 hours 90% 90% 90% 90% 90% 90% Indoors Indoors Indoors Indoors Indoors Indoors with LEV with LEV with LEV with LEV with LEV without LEV 14,32 1,55 0,86 14,32 1,55 15,50 assumed vapour pressure of liquid: 5000 Pa 18 Workshop Exposure Scenarios PROC Hierarchy Example 2: If PROC 6 is safe for a given set of conditions then PROC 14 and PROC 12 are also safe for the same set of conditions. PROC Type of setting Duration of Use of ventilation ? activity per day Efficiency of respiratory Total Exposure protection (%) (mg/kg/day) PROC 6 industrial 1 - 4 hours Indoors with LEV 90% 1,55 PROC 14 industrial 1 - 4 hours Indoors with LEV 90% PROC 12 industrial 1 - 4 hours Indoors with LEV 90% 0,52 0,18 PROC 6 industrial 1 - 4 hours Indoors with LEV 90% 1,55 PROC 14 industrial 1 - 4 hours Indoors without LEV 90% PROC 12 industrial 1 - 4 hours Indoors with LEV 90% 5,21 0,18 assumed vapour pressure of liquid: 5000 Pa 19